阅读说明：本技术 一种无线充电方法及电子设备 (Wireless charging method and electronic equipment ) 是由 何泽瑞 于东洋 周佐华 张政学 闪超星 于 2019-08-23 设计创作，主要内容包括：本申请实施例公开了一种无线充电方法及电子设备,涉及电子设备领域,能够提高无线充电线圈对位的准确度,提升无线充电速度。具体方案为：在使用设置有第二充电线圈的充电设备通过第一充电线圈为电子设备充电时,电子设备确定第一充电线圈的信号强度,并根据信号强度确定第一充电线圈相对于第二充电线圈的位移偏差；电子设备获取第一充电线圈上N个位置处的磁场强度,N为大于或等于3的整数；电子设备根据第一充电线圈上N个位置处的磁场强度,确定第一充电线圈相对于第二充电线圈的位移方向；电子设备根据位移偏差和位移方向,提示用户移动电子设备,移动的方向为位移方向所指示的方向,移动的距离为位移偏差所指示的距离。(The embodiment of the application discloses a wireless charging method and electronic equipment, relates to the field of electronic equipment, and can improve the alignment accuracy of a wireless charging coil and improve the wireless charging speed. The specific scheme is as follows: when the electronic equipment is charged by using the charging equipment provided with the second charging coil through the first charging coil, the electronic equipment determines the signal intensity of the first charging coil and determines the displacement deviation of the first charging coil relative to the second charging coil according to the signal intensity; the electronic equipment acquires the magnetic field intensity of N positions on the first charging coil, wherein N is an integer greater than or equal to 3; the electronic equipment determines the displacement direction of the first charging coil relative to the second charging coil according to the magnetic field intensity at the N positions on the first charging coil; and the electronic equipment prompts a user to move the electronic equipment according to the displacement deviation and the displacement direction, wherein the moving direction is the direction indicated by the displacement direction, and the moving distance is the distance indicated by the displacement deviation.)

1. The wireless charging method is applied to an electronic device, wherein the electronic device comprises a first charging coil; the method comprises the following steps:

when a charging device provided with a second charging coil is used for charging the electronic device through the first charging coil, the electronic device determines signal strength of the first charging coil, wherein the signal strength is used for representing the magnetic field intensity of the first charging coil in a magnetic field generated by the second charging coil;

the electronic device determining a displacement deviation of the first charging coil relative to the second charging coil from the signal strength;

the electronic equipment acquires the magnetic field intensity of N positions on the first charging coil, wherein N is an integer greater than or equal to 3;

the electronic device determines a displacement direction of the first charging coil relative to the second charging coil according to magnetic field strengths at N locations on the first charging coil;

and the electronic equipment prompts a user to move the electronic equipment according to the displacement deviation and the displacement direction, wherein the moving direction is the direction indicated by the displacement direction, and the moving distance is the distance indicated by the displacement deviation.

2. The method of claim 1, wherein the electronic device determines a direction of displacement of the first charging coil relative to the second charging coil from magnetic field strength at N locations on the first charging coil, comprising:

the electronic device determines the displacement direction of the first charging coil relative to the second charging coil according to the magnitude relation of the magnetic field strength at the N positions on the first charging coil;

wherein the displacement direction is a direction pointing from a geometric center of the first charging coil away from a location of the N locations where magnetic field strength is smallest and towards a location of the N locations where magnetic field strength is largest.

3. The method of claim 2, wherein when N is 3, the electronic device obtains magnetic field strength at N locations on the first charging coil, comprising:

the electronic device obtains a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2 and a third magnetic field strength B3 at a third position P3 on the first charging coil;

wherein, if the B1 is smaller than the B2, and the B1 is smaller than the B3, the displacement direction is specifically a direction pointing from the geometric center P0 of the first charging coil to a first region, the first region being a region composed of the P2, the P3, and the P0;

if the B2 is smaller than the B3, and the B2 is smaller than the B1, the displacement direction is specifically a direction pointing from the geometric center P0 of the first charging coil to a second region, which is the region consisting of the P1, the P3, and the P0;

if the B3 is smaller than the B1 and the B3 is smaller than the B2, the displacement direction is specifically a direction pointing from the geometric center P0 of the first charging coil to a third region, which is a region consisting of the P1, the P1 and the P0.

4. The method of claim 3, wherein Hall sensors are disposed at the P1, the P2, and the P3 of the first charging coil, respectively;

the electronic device acquires a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2 and a third magnetic field strength B3 at a third position P3 on the first charging coil, and comprises:

the electronic equipment acquires the B1 through a Hall sensor arranged at P1, acquires the B2 through a Hall sensor arranged at P2, and acquires the B3 through a Hall sensor arranged at P3.

5. The method of claim 2, wherein when N is 4, the electronic device obtains magnetic field strength at N locations on the first charging coil, comprising:

the electronic device obtains a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2, a third magnetic field strength B3 at a third position P3 and a fourth magnetic field strength B4 at a fourth position P4 on the first charging coil; wherein the P1, the P2, the P3, and the P4 are aligned in a counter-clockwise direction on the first charging coil;

wherein, if the B1 is largest and the B2 is larger than the B4, the displacement direction is specifically a direction pointing from the geometric center P0 of the first charging coil to region a, which is a region composed of the P1, the P0, and the midpoint of the line connecting the P1 and the P2;

if the B2 is largest and the B1 is larger than the B3, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region B, which is the region formed by the midpoints of the lines connecting the P2, the P0, and the P1 with the P2;

if the B2 is largest and the B3 is larger than the B1, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region C, which is the region formed by the midpoints of the lines connecting the P2, the P0, and the P3 with the P2;

if the B3 is largest and the B2 is larger than the B4, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region D, which is the region composed of the P3, the P0, and the midpoint of the line connecting the P3 and the P2;

if the B3 is largest and the B4 is larger than the B2, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region E, which is the region composed of the midpoint of the line connecting the P3, the P0 and the P3 with the P4;

if the B4 is largest and the B3 is larger than the B1, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region F, which is the region formed by the midpoints of the lines connecting the P4, the P0, and the P3 with the P4;

if the B4 is largest and the B1 is larger than the B3, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region G, which is the region composed of the P4, the P0, and the midpoint of the line connecting the P1 and the P4;

if the B1 is the largest and the B4 is larger than the B2, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region H, which is the region formed by the midpoints of the lines connecting the P1, the P0, and the P1 with the P4.

6. The method of claim 5, wherein Hall sensors are disposed at the P1, the P2, the P3, and the P4 of the first charging coil, respectively;

the electronic device acquires a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2, a third magnetic field strength B3 at a third position P3 and a fourth magnetic field strength B4 at a fourth position P4 on the first charging coil, and the electronic device comprises:

the electronic equipment acquires the B1 through a Hall sensor arranged at P1, acquires the B2 through a Hall sensor arranged at P2, acquires the B3 through a Hall sensor arranged at P3 and acquires the B4 through a Hall sensor arranged at P4.

7. The method of any of claims 1-6, wherein the electronic device prompts a user to move the electronic device based on the displacement deviation and the displacement direction, comprising:

the electronic equipment displays a guide interface according to the displacement deviation and the displacement direction, wherein the guide interface comprises first prompt information and second prompt information;

the first prompt message is used for prompting a user of the direction of moving the electronic equipment, and the direction prompted by the first prompt message is the direction indicated by the displacement direction;

the second prompt message is used for prompting the user of the distance for moving the electronic device, and the distance prompted by the second prompt message is the distance indicated by the displacement deviation.

8. The method of any of claims 1-7, wherein the electronic device determines a signal strength of the first charging coil, comprising:

the electronic device determines the signal strength from an induced current on the first charging coil.

9. The method of any of claims 1-8, wherein the electronic device determines a displacement bias of the first charging coil relative to the second charging coil as a function of the signal strength, comprising:

and the electronic equipment determines the displacement deviation according to the signal intensity and a mapping relation, wherein the mapping relation comprises the corresponding relation of the signal intensity and the displacement deviation.

10. An electronic device, wherein the electronic device is provided with a first charging coil;

the electronic equipment comprises a determining unit, an acquiring unit and a prompting unit;

the determining unit is used for determining the signal strength of the first charging coil when the electronic equipment is charged through the first charging coil by using charging equipment provided with a second charging coil, wherein the signal strength is used for representing the magnetic field strength of the first charging coil in the magnetic field generated by the second charging coil; determining a displacement deviation of the first charging coil relative to the second charging coil from the signal strength;

the acquiring unit is used for acquiring the magnetic field intensity at N positions on the first charging coil, wherein N is an integer greater than or equal to 3;

the determining unit is further configured to determine a displacement direction of the first charging coil relative to the second charging coil according to magnetic field strengths at N locations on the first charging coil;

and the prompting unit is used for prompting a user to move the electronic equipment according to the displacement deviation and the displacement direction, wherein the moving direction is the direction indicated by the displacement direction, and the moving distance is the distance indicated by the displacement deviation.

11. The electronic device of claim 10, wherein the determining unit is configured to determine a displacement direction of the first charging coil relative to the second charging coil according to magnetic field strength at N locations on the first charging coil, and comprises:

the determining unit is used for determining the displacement direction of the first charging coil relative to the second charging coil according to the magnitude relation of the magnetic field strengths of the N positions on the first charging coil;

wherein the displacement direction is a direction pointing from a geometric center of the first charging coil away from a location of the N locations where magnetic field strength is smallest and towards a location of the N locations where magnetic field strength is largest.

12. The electronic device according to claim 11, wherein when N is 3, the obtaining unit is configured to obtain magnetic field strengths at N positions on the first charging coil, and includes:

the acquiring unit is used for acquiring a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2 and a third magnetic field strength B3 at a third position P3 on the first charging coil;

wherein, if the B1 is smaller than the B2, and the B1 is smaller than the B3, the displacement direction is specifically a direction pointing from the geometric center P0 of the first charging coil to a first region, the first region being a region composed of the P2, the P3, and the P0;

if the B2 is smaller than the B3, and the B2 is smaller than the B1, the displacement direction is specifically a direction pointing from the geometric center P0 of the first charging coil to a second region, which is the region consisting of the P1, the P3, and the P0;

if the B3 is smaller than the B1 and the B3 is smaller than the B2, the displacement direction is specifically a direction pointing from the geometric center P0 of the first charging coil to a third region, which is a region consisting of the P1, the P1 and the P0.

13. The electronic device of claim 12, wherein hall sensors are disposed at the P1, the P2, and the P3 of the first charging coil, respectively;

the acquiring unit is used for acquiring a first magnetic field strength B1 of a first position P1, a second magnetic field strength B2 of a second position P2 and a third magnetic field strength B3 of a third position P3 on the first charging coil, and comprises:

the acquisition unit is used for acquiring the B1 through the Hall sensor arranged at the P1, acquiring the B2 through the Hall sensor arranged at the P2 and acquiring the B3 through the Hall sensor arranged at the P3.

14. The electronic device according to claim 11, wherein when N is 4, the obtaining unit is configured to obtain magnetic field strengths at N positions on the first charging coil, and includes:

the acquiring unit is used for acquiring a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2, a third magnetic field strength B3 at a third position P3 and a fourth magnetic field strength B4 at a fourth position P4 on the first charging coil; wherein the P1, the P2, the P3, and the P4 are aligned in a counter-clockwise direction on the first charging coil;

wherein, if the B1 is largest and the B2 is larger than the B4, the displacement direction is specifically a direction pointing from the geometric center P0 of the first charging coil to region a, which is a region composed of the P1, the P0, and the midpoint of the line connecting the P1 and the P2;

if the B2 is largest and the B1 is larger than the B3, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region B, which is the region formed by the midpoints of the lines connecting the P2, the P0, and the P1 with the P2;

if the B2 is largest and the B3 is larger than the B1, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region C, which is the region formed by the midpoints of the lines connecting the P2, the P0, and the P3 with the P2;

if the B3 is largest and the B2 is larger than the B4, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region D, which is the region composed of the P3, the P0, and the midpoint of the line connecting the P3 and the P2;

if the B3 is largest and the B4 is larger than the B2, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region E, which is the region composed of the midpoint of the line connecting the P3, the P0 and the P3 with the P4;

if the B4 is largest and the B3 is larger than the B1, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region F, which is the region formed by the midpoints of the lines connecting the P4, the P0, and the P3 with the P4;

if the B4 is largest and the B1 is larger than the B3, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region G, which is the region composed of the P4, the P0, and the midpoint of the line connecting the P1 and the P4;

if the B1 is the largest and the B4 is larger than the B2, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region H, which is the region formed by the midpoints of the lines connecting the P1, the P0, and the P1 with the P4.

15. The electronic device of claim 14, wherein hall sensors are disposed at the P1, the P2, the P3, and the P4 of the first charging coil, respectively;

the acquiring unit is used for acquiring a first magnetic field strength B1 of a first position P1, a second magnetic field strength B2 of a second position P2, a third magnetic field strength B3 of a third position P3 and a fourth magnetic field strength B4 of a fourth position P4 on the first charging coil, and comprises:

the acquisition unit is used for acquiring the B1 through a Hall sensor arranged at P1, acquiring the B2 through a Hall sensor arranged at P2, acquiring the B3 through a Hall sensor arranged at P3 and acquiring the B4 through a Hall sensor arranged at P4.

16. The electronic device according to any of claims 10-15, wherein the prompting unit is configured to prompt a user to move the electronic device according to the displacement deviation and the displacement direction, and comprises:

the prompting unit is used for displaying a guide interface according to the displacement deviation and the displacement direction, and the guide interface comprises first prompting information and second prompting information;

the first prompt message is used for prompting a user of the direction of moving the electronic equipment, and the direction prompted by the first prompt message is the direction indicated by the displacement direction;

the second prompt message is used for prompting the user of the distance for moving the electronic device, and the distance prompted by the second prompt message is the distance indicated by the displacement deviation.

17. The electronic device of any of claims 10-16, wherein the determining unit, configured to determine the signal strength of the first charging coil, comprises:

the determining unit is used for determining the signal strength according to the induced current on the first charging coil.

18. The electronic device of any of claims 10-17, wherein the determining unit to determine a displacement bias of the first charging coil relative to the second charging coil from the signal strength comprises:

the determining unit is configured to determine the displacement deviation according to the signal strength and a mapping relationship, where the mapping relationship includes a correspondence between the signal strength and the displacement deviation.

19. An electronic device, characterized in that the electronic device comprises: the charging management module is used for storing the charging information of the first charging coil; the processor, the first charging coil, the charging management module and the memory coupled for storing computer program code, the computer program code comprising computer instructions that, when executed by the electronic device, cause the electronic device to perform the wireless charging method of any of claims 1-9.

20. A computer-readable storage medium, comprising: computer software instructions;

the computer software instructions, when run in an electronic device, cause the electronic device to perform the wireless charging method of any of claims 1-9.

21. A computer program product, which, when run on a computer, causes the computer to perform the wireless charging method of any one of claims 1 to 9.

22. A chip system is applied to an electronic device comprising a first charging coil; the chip system includes one or more interface circuits and one or more processors; the interface circuit and the processor are interconnected through a line; the interface circuit is to receive a signal from a memory of the electronic device and to send the signal to the processor, the signal comprising computer instructions stored in the memory; the electronic device performs the method of any of claims 1-9 when the processor executes the computer instructions.

Technical Field

The present disclosure relates to the field of electronic devices, and particularly, to a wireless charging method and an electronic device.

Background

At present, wireless charging technology is more and more widely applied to the charging process of electronic equipment. For low power wireless charging (e.g., charging of electronic devices), wireless charging may be implemented based on electromagnetic induction principles. Exemplarily, the charging coils are respectively arranged in the charging device and the electronic device to be charged, when the two charging coils are close to each other, the charging coil in the electronic device is in a magnetic field generated by the charging coil in the charging device, so that an induced current is generated on the charging coil in the electronic device, and the induced current is input into the electronic device, thereby realizing wireless charging of the electronic device. Among them, the Wireless charging based on electromagnetic induction mostly adopts the Qi Wireless protocol standard proposed by Wireless Power Consortium (WPC), and the distance supporting the Wireless charging is in millimeter level. Because slight displacement deviation will directly influence wireless charging efficiency, and then influence the speed of charging, consequently, the counterpoint requirement of wireless charging to the charging coil is very strict.

In addition, because of the protection and the outward appearance of charging coil, the charging coil is generally set up inside electronic equipment, consequently, can't audio-visually carry out accurate counterpoint according to the position of charging coil. Therefore, the charging speed in the wireless charging process cannot be guaranteed.

In order to solve the problem of coil alignment in the wireless charging process, a positioning structure can be arranged on the charging equipment. Referring to fig. 1, a wireless charging apparatus with a positioning structure in the prior art is shown. When the user needs to wirelessly charge the electronic equipment, the electronic equipment is placed into the positioning structure, so that the charging coil of the electronic equipment and the charging coil of the charging equipment are accurately aligned, and the wireless charging efficiency is guaranteed. However, such a positioning structure has a very high requirement on the size of the electronic device, and electronic devices of different sizes cannot share the same charging device. For electronic devices with the same size, if the positions of the charging coils inside the electronic devices are set differently, the same charging device cannot be shared.

Therefore, a scheme is needed to improve the alignment accuracy of the wireless charging coil, so as to improve the wireless charging speed.

Disclosure of Invention

The embodiment of the application provides a wireless charging method and electronic equipment, which can improve the alignment accuracy of a wireless charging coil so as to improve the wireless charging speed.

In order to achieve the above purpose, the embodiments of the present application provide the following technical solutions:

in a first aspect, an embodiment of the present application provides a wireless charging method, which may be applied to an electronic device provided with a first charging coil. The method can comprise the following steps: when the charging device provided with the second charging coil is used for charging the electronic device through the first charging coil, the electronic device determines the signal strength (signal strength) of the first charging coil, and the signal strength is used for representing the magnetic field strength of the first charging coil in the magnetic field generated by the second charging coil. The electronic device determines a displacement deviation of the first charging coil relative to the second charging coil from the signal strength. The electronic equipment acquires the magnetic field intensity at N positions on the first charging coil, wherein N is an integer greater than or equal to 3. The electronic device determines a displacement direction of the first charging coil relative to the second charging coil according to magnetic field strengths at the N positions on the first charging coil. And the electronic equipment prompts a user to move the electronic equipment according to the displacement deviation and the displacement direction, wherein the moving direction is the direction indicated by the displacement direction, and the moving distance is the distance indicated by the displacement deviation.

In this way, when the electronic device is wirelessly charged, the electronic device can determine the displacement deviation of the first charging coil and the second charging coil of the charging device at the current position according to the signal strength of the first charging coil arranged on the electronic device in the magnetic field. The electronic device can also determine a displacement direction of the first charging coil and a second charging coil of the charging device at the current position according to the magnetic field strength of at least 3 positions on the first charging coil. So that electronic equipment can remove electronic equipment according to displacement deviation and displacement direction suggestion user for electronic equipment's first charging coil and second charging coil counterpoint more accurate, and then promote wireless charging speed.

In one possible design, the electronic device determines a direction of displacement of the first charging coil relative to the second charging coil based on magnetic field strength at N locations on the first charging coil, comprising: the electronic equipment determines the displacement direction of the first charging coil relative to the second charging coil according to the magnitude relation of the magnetic field intensity at the N positions on the first charging coil. Wherein the displacement direction is a direction pointing from the geometric center of the first charging coil to a position away from the position of the N positions where the magnetic field strength is the smallest and to a position close to the position of the N positions where the magnetic field strength is the largest. Thus, the electronic device can determine the approximate direction of the displacement direction according to the magnetic field intensity of at least 3 positions on the first charging coil.

In one possible design, when N is 3, the electronic device obtains the magnetic field strength at N locations on the first charging coil, including: the electronic device obtains a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2, and a third magnetic field strength B3 at a third position P3 on the first charging coil. Here, if B1 is smaller than B2, and B1 is smaller than B3, the displacement direction is specifically a direction in which the geometric center P0 of the first charging coil points to the first region, which is a region composed of P2, P3, and P0. If B2 is smaller than B3, and B2 is smaller than B1, the displacement direction is specifically a direction pointing from the geometric center P0 of the first charging coil to the second region, which is a region composed of P1, P3, and P0. If B3 is smaller than B1, and B3 is smaller than B2, the displacement direction is specifically a direction pointing from the geometric center P0 of the first charging coil to the third region, which is a region composed of P1, P1, and P0. Therefore, the electronic equipment can determine the direction of the accurate displacement direction according to the relative magnitude relation of the magnetic field intensity of the 3 positions on the first charging coil.

In one possible design, hall sensors are provided at P1, P2, and P3, respectively, of the first charging coil. The electronic device obtains a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2, and a third magnetic field strength B3 at a third position P3 on a first charging coil, comprising: the electronic device acquires B1 by the hall sensor provided at P1, B2 by the hall sensor provided at P2, and B3 by the hall sensor provided at P3. Thus, the electronic device can acquire the magnetic field intensity of 3 different positions on the first charging coil through the hall sensor.

In one possible design, when N is 4, the electronic device obtains the magnetic field strength at N locations on the first charging coil, including: the electronic device obtains a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2, a third magnetic field strength B3 at a third position P3, and a fourth magnetic field strength B4 at a fourth position P4 on the first charging coil. Wherein P1, P2, P3, and P4 are arranged in a counterclockwise direction on the first charging coil. Wherein, if B1 is the largest and B2 is larger than B4, the displacement direction is specifically the direction pointing from the geometric center P0 of the first charging coil to region a, which is the region composed of the midpoints of the lines connecting P1, P0, and P1 with P2. If B2 is largest and B1 is larger than B3, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region B, which is the region made up of the midpoints of the lines connecting P2, P0, and P1 with P2. If B2 is largest and B3 is larger than B1, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region C, which is the region consisting of the midpoints between the lines connecting P2, P0, and P3 with P2. If B3 is largest and B2 is larger than B4, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region D, which is the region consisting of the midpoints between the lines connecting P3, P0, and P3 with P2. If B3 is largest and B4 is larger than B2, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region E, which is the region made up of the midpoints of the lines connecting P3, P0, and P3 with P4. If B4 is largest and B3 is larger than B1, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region F, which is the region made up of the midpoints of the lines connecting P4, P0, and P3 with P4. If B4 is largest and B1 is larger than B3, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region G, which is the region consisting of the midpoints between the lines connecting P4, P0, and P1 with P4. If B1 is largest and B4 is larger than B2, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region H, which is the region consisting of the midpoints of the lines connecting P1, P0, and P1 with P4. Therefore, the electronic equipment can determine the direction of the more accurate displacement direction according to the relative magnitude relation of the magnetic field intensity of the 4 positions on the first charging coil.

In one possible design, hall sensors are provided at P1, P2, P3, and P4, respectively, of the first charging coil. The electronic device acquires a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2, a third magnetic field strength B3 at a third position P3 and a fourth magnetic field strength B4 at a fourth position P4 on a first charging coil, and comprises: the electronic device obtains B1 through the hall sensor provided at P1, B2 through the hall sensor provided at P2, B3 through the hall sensor provided at P3, and B4 through the hall sensor provided at P4. In this way, the electronic device can acquire the magnetic field intensity of 4 different positions on the first charging coil through the hall sensor.

In one possible design, the electronic device prompts the user to move the electronic device according to the displacement deviation and the displacement direction, including: the electronic equipment displays a guide interface according to the displacement deviation and the displacement direction, wherein the guide interface comprises first prompt information and second prompt information. The first prompt message is used for prompting the user of the direction of moving the electronic equipment, and the direction prompted by the first prompt message is the direction indicated by the displacement direction. The second prompt message is used for prompting the user of the distance of the mobile electronic equipment, and the distance prompted by the second prompt message is the distance indicated by the displacement deviation. Like this, electronic equipment just can accurately indicate the user to remove electronic equipment according to displacement direction and displacement deviation for electronic equipment's first charging coil and charging equipment's second charging coil counterpoint is more accurate.

In one possible design, the electronic device determines a signal strength of the first charging coil, comprising: the electronic device determines a signal strength from the induced current on the first charging coil. In this way, the electronic device can determine the signal strength of the first charging coil in the magnetic field of the second charging coil of the charging device at the current location by the magnitude of the induced current on the first charging coil.

In one possible design, the electronic device determines a displacement bias of the first charging coil relative to the second charging coil as a function of signal strength, comprising: the electronic equipment determines the displacement deviation according to the signal intensity and a mapping relation, wherein the mapping relation comprises a corresponding relation of the signal intensity and the displacement deviation. Thus, the electronic equipment can accurately determine the displacement deviation according to the determined signal intensity.

In a second aspect, the present application provides an electronic device provided with a first charging coil. The electronic equipment comprises a determining unit, an acquiring unit and a prompting unit. The determining unit is used for determining the signal intensity signalstrngthh of the first charging coil when the electronic equipment is charged by the first charging coil by using the charging equipment provided with the second charging coil, wherein the signal intensity is used for representing the magnetic field intensity of the first charging coil in the magnetic field generated by the second charging coil. A displacement deviation of the first charging coil relative to the second charging coil is determined from the signal strength. The acquisition unit is used for acquiring the magnetic field intensity at N positions on the first charging coil, wherein N is an integer greater than or equal to 3. The determining unit is further used for determining the displacement direction of the first charging coil relative to the second charging coil according to the magnetic field strength at the N positions on the first charging coil. And the prompting unit is used for prompting a user to move the electronic equipment according to the displacement deviation and the displacement direction, wherein the moving direction is the direction indicated by the displacement direction, and the moving distance is the distance indicated by the displacement deviation.

In one possible design, the determining unit for determining a displacement direction of the first charging coil relative to the second charging coil from magnetic field strengths at N locations on the first charging coil comprises: the determining unit is used for determining the displacement direction of the first charging coil relative to the second charging coil according to the magnitude relation of the magnetic field intensity at the N positions on the first charging coil. Wherein the displacement direction is a direction pointing from the geometric center of the first charging coil to a position away from the position of the N positions where the magnetic field strength is the smallest and to a position close to the position of the N positions where the magnetic field strength is the largest.

In one possible design, when N is 3, the obtaining unit is configured to obtain the magnetic field strength at N locations on the first charging coil, and includes: the acquisition unit is used for acquiring a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2 and a third magnetic field strength B3 at a third position P3 on the first charging coil. Here, if B1 is smaller than B2, and B1 is smaller than B3, the displacement direction is specifically a direction in which the geometric center P0 of the first charging coil points to the first region, which is a region composed of P2, P3, and P0. If B2 is smaller than B3, and B2 is smaller than B1, the displacement direction is specifically a direction pointing from the geometric center P0 of the first charging coil to the second region, which is a region composed of P1, P3, and P0. If B3 is smaller than B1, and B3 is smaller than B2, the displacement direction is specifically a direction pointing from the geometric center P0 of the first charging coil to the third region, which is a region composed of P1, P1, and P0.

In one possible design, hall sensors are provided at P1, P2, and P3, respectively, of the first charging coil. An obtaining unit for obtaining a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2 and a third magnetic field strength B3 at a third position P3 on a first charging coil, comprising: and the acquisition unit is used for acquiring B1 through a Hall sensor arranged at P1, acquiring B2 through a Hall sensor arranged at P2 and acquiring B3 through a Hall sensor arranged at P3.

In one possible design, when N is 4, the obtaining unit is configured to obtain the magnetic field strength at N locations on the first charging coil, and includes: the acquisition unit is used for acquiring a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2, a third magnetic field strength B3 at a third position P3 and a fourth magnetic field strength B4 at a fourth position P4 on the first charging coil. Wherein P1, P2, P3, and P4 are arranged in a counterclockwise direction on the first charging coil. Wherein, if B1 is the largest and B2 is larger than B4, the displacement direction is specifically the direction pointing from the geometric center P0 of the first charging coil to region a, which is the region composed of the midpoints of the lines connecting P1, P0, and P1 with P2. If B2 is largest and B1 is larger than B3, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region B, which is the region made up of the midpoints of the lines connecting P2, P0, and P1 with P2. If B2 is largest and B3 is larger than B1, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region C, which is the region consisting of the midpoints between the lines connecting P2, P0, and P3 with P2. If B3 is largest and B2 is larger than B4, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region D, which is the region consisting of the midpoints between the lines connecting P3, P0, and P3 with P2. If B3 is largest and B4 is larger than B2, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region E, which is the region made up of the midpoints of the lines connecting P3, P0, and P3 with P4. If B4 is largest and B3 is larger than B1, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region F, which is the region made up of the midpoints of the lines connecting P4, P0, and P3 with P4. If B4 is largest and B1 is larger than B3, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region G, which is the region consisting of the midpoints between the lines connecting P4, P0, and P1 with P4. If B1 is largest and B4 is larger than B2, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region H, which is the region consisting of the midpoints of the lines connecting P1, P0, and P1 with P4.

In one possible design, hall sensors are provided at P1, P2, P3, and P4, respectively, of the first charging coil. An obtaining unit for obtaining a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2, a third magnetic field strength B3 at a third position P3 and a fourth magnetic field strength B4 at a fourth position P4 on a first charging coil, comprising: an acquisition unit for acquiring B1 by a hall sensor provided at P1, B2 by a hall sensor provided at P2, B3 by a hall sensor provided at P3, and B4 by a hall sensor provided at P4.

In one possible design, the prompting unit is configured to prompt a user to move the electronic device according to the displacement deviation and the displacement direction, and includes: and the prompting unit is used for displaying a guide interface according to the displacement deviation and the displacement direction, and the guide interface comprises first prompting information and second prompting information. The first prompt message is used for prompting the user of the direction of moving the electronic equipment, and the direction prompted by the first prompt message is the direction indicated by the displacement direction. The second prompt message is used for prompting the user of the distance of the mobile electronic equipment, and the distance prompted by the second prompt message is the distance indicated by the displacement deviation.

In one possible design, a determining unit for determining a signal strength of a first charging coil includes: a determining unit for determining a signal strength according to the induced current on the first charging coil. In one possible embodiment, a determination unit for determining a displacement deviation of a first charging coil relative to a second charging coil as a function of a signal strength includes: and the determining unit is used for determining the displacement deviation according to the signal intensity and a mapping relation, wherein the mapping relation comprises the corresponding relation of the signal intensity and the displacement deviation.

In a third aspect, the present application provides an electronic device. The electronic device includes: the charging device comprises a first charging coil, a charging management module, a processor and a memory. The processor, the first charging coil, the charge management module and the memory are coupled, the memory being configured to store computer program code comprising computer instructions that, when executed by the electronic device, cause the electronic device to perform the wireless charging method according to the first aspect and various possible designs of the first aspect.

In a fourth aspect, the present application provides a computer-readable storage medium, which may include: computer software instructions. The computer software instructions, when executed in the electronic device, cause the electronic device to perform the wireless charging method as set forth in the first aspect and various possible designs of the first aspect.

In a fifth aspect, the present application provides a computer program product for causing a computer to perform the wireless charging method according to the first aspect and various possible designs of the first aspect when the computer program product runs on the computer.

In a sixth aspect, the present application provides a chip system, which includes a processor and a communication interface, and is configured to support an electronic device to implement the functions recited in the foregoing aspects. In one possible design, the system-on-chip further includes a memory for storing program instructions and data necessary for the electronic device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

In a seventh aspect, the present application provides a wireless charging system that may include an electronic device provided with a first charging coil and a charging device provided with a second charging coil. The charging device can wirelessly charge the electronic device. In a wireless charging process, the electronic device may be configured to perform the wireless charging method according to the first aspect and various possible designs of the first aspect.

It should be understood that the electronic device provided by the second aspect and various possible designs of the second aspect, the electronic device of the third aspect, the computer-readable storage medium of the fourth aspect, the computer program product of the fifth aspect, the chip system of the sixth aspect, and the wireless charging system of the seventh aspect may all be configured to perform the wireless charging method provided by the first aspect and various possible designs of the first aspect, and therefore, the beneficial effects achieved by the method provided by the first aspect and various possible designs of the first aspect may be referred to and will not be described herein again.

Drawings

Fig. 1 is a schematic structural diagram of a wireless charging device with a positioning structure provided in the prior art;

fig. 2 is a schematic composition diagram of an electronic device according to an embodiment of the present disclosure;

fig. 3 is a schematic composition diagram of a charging device according to an embodiment of the present disclosure;

fig. 4 is a schematic view of a wireless charging scenario provided in an embodiment of the present application;

fig. 5 is a schematic flowchart of a wireless charging method according to an embodiment of the present disclosure;

fig. 6 is a schematic magnetic field diagram of a power transmission coil according to an embodiment of the present disclosure;

fig. 7 is a schematic diagram of magnetic field strength acquisition provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of another magnetic field strength acquisition provided by an embodiment of the present application;

fig. 9 is a schematic diagram of displacement direction determination provided in an embodiment of the present application;

FIG. 10 is a schematic view of another displacement direction determination provided by an embodiment of the present application;

FIG. 11 is a schematic view of another displacement direction determination provided by an embodiment of the present application;

FIG. 12 is a schematic view of another displacement direction determination provided by an embodiment of the present application;

fig. 13 is a schematic diagram illustrating relative positions of a power receiving coil and a power transmitting coil according to an embodiment of the present application;

fig. 14 is a schematic diagram illustrating relative positions of another power receiving coil and another power transmitting coil according to an embodiment of the present application;

fig. 15 is a schematic diagram illustrating relative positions of another power receiving coil and another power transmitting coil according to an embodiment of the present application;

FIG. 16 is a schematic illustration of a guidance interface provided in an embodiment of the present application;

FIG. 17 is a schematic illustration of another guidance interface provided in embodiments of the present application;

FIG. 18 is a schematic illustration of another guidance interface provided in embodiments of the present application;

fig. 19 is a schematic diagram of a logic composition of an electronic device according to an embodiment of the present application;

fig. 20 is a schematic logic composition diagram of a chip system according to an embodiment of the present disclosure.

Detailed Description

In the wireless charging process, the charging device, such as whether the charging coil in the charging device is aligned with the charging coil in the charged electronic device accurately or not, has a very obvious influence on the wireless charging speed. The embodiment of the application provides a wireless charging method, which is characterized in that the displacement deviation and the displacement direction of a charging coil in electronic equipment and the charging coil in the charging equipment are determined by determining the signal intensity on the charging coil in the electronic equipment and the magnetic field intensity at different positions on the charging coil in the electronic equipment, and then a user is prompted to move the electronic equipment according to the displacement deviation and the displacement direction, so that the charging coil on the electronic equipment and the charging coil on the charging equipment are accurately aligned, and the purpose of improving the wireless charging speed is achieved.

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Please refer to fig. 2, which is a schematic diagram illustrating an electronic device 200 according to an embodiment of the present disclosure. As shown in fig. 2, the electronic device 200 may include a processor 210, a Universal Serial Bus (USB) interface, a charging coil 220, a charging management module 230, a power management module 231, a battery 232, a sensor module 240, an antenna 1, an antenna 2, a mobile communication module, a wireless communication module, an external memory interface, an internal memory, an audio module, a speaker, a receiver, a microphone, an earphone interface, a button, a motor, an indicator, a camera, a display 250, a Subscriber Identity Module (SIM) card interface, and the like.

It is to be understood that the illustrated structure of the present embodiment does not constitute a specific limitation to the electronic apparatus 200. In other embodiments, electronic device 200 may include more or fewer components than shown, or combine certain components, or split certain components, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Processor 210 may include one or more processing units, such as: the processor 210 may include an Application Processor (AP), a modem processor, a Graphics Processor (GPU), an Image Signal Processor (ISP), a controller, a memory, a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a neural-Network Processing Unit (NPU), etc. The different processing units may be separate devices or may be integrated into one or more processors.

The controller may be a neural center and a command center of the electronic device 200. The controller can generate an operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetching and instruction execution.

A memory may also be provided in processor 210 for storing instructions and parameters. In some embodiments, the memory in the processor 210 is a cache memory. The memory may hold instructions or parameters that have just been used or recycled by the processor 210. If the processor 210 needs to use the instruction or parameter again, it can be called directly from the memory. Avoiding repeated accesses reduces the latency of the processor 210, thereby increasing the efficiency of the system.

In some embodiments, processor 210 may include one or more interfaces. The interface may include an integrated circuit (I2C) interface, an integrated circuit built-in audio (I2S) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a general-purpose input/output (GPIO) interface, a SIM interface, and/or a USB interface, etc.

The charging management module 230 is configured to receive charging input from a charging device. In this embodiment, the charging device is a wireless charging device having a wired charging function. The charging management module 230 may receive a wireless charging input through the charging coil 220 of the electronic device 200. The charging management module 230 may also supply power to the electronic device through the power management module 231 while charging the battery 232.

The power management module 231 is used to connect the battery 232, the charging management module 230 and the processor 210. The power management module 231 receives input from the battery 232 and/or the charge management module 230 and provides power to the processor 210, the internal memory, the external memory, the display 250, the camera, the wireless communication module, and the like. The power management module 231 may also be used to monitor parameters such as battery capacity, battery cycle number, battery state of health (leakage, impedance), etc. In some other embodiments, the power management module 231 may also be disposed in the processor 210. In other embodiments, the power management module 231 and the charging management module 230 may be disposed in the same device.

The electronic device 200 implements display functions through the GPU, the display screen 250, and the application processor. The GPU is a microprocessor for image processing, and is connected to the display screen 250 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 210 may include one or more GPUs that execute program instructions to generate or alter display information.

The display screen 250 is used to display images, video, and the like. For example, the display screen 250 may be used to display a guide interface for guiding a user to move the electronic device. The display screen 250 is a foldable screen as described above (e.g., a flexible foldable screen or a multi-screen foldable screen). The display screen 250 includes a display panel. The display panel may adopt a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode, AMOLED), a flexible light-emitting diode (FLED), a miniature, a Micro-oeld, a quantum dot light-emitting diode (QLED), and the like.

The sensor module 240 may include a hall sensor. The hall sensor may utilize the hall effect to determine the strength of the magnetic field at a point in the magnetic field. For example, in the embodiment of the present application, a hall sensor may be disposed on the charging coil 220 of the electronic device 200, and when the electronic device 200 is wirelessly charged, the hall sensor may determine the magnetic field strength of the magnetic field generated by the charging coil on the charging device at the position where the hall sensor is disposed. In the embodiment of the present application, a plurality of hall sensors may be disposed at different positions of the charging coil 220 of the electronic device 200.

The sensor module 240 may include other sensors such as pressure sensors, gyroscope sensors, air pressure sensors, infrared sensors, magnetic sensors, acceleration sensors, distance sensors, proximity light sensors, fingerprint sensors, temperature sensors, touch sensors, ambient light sensors, bone conduction sensors, and the like.

Among other things, the gyro sensor may be used to determine the motion pose of the electronic device 200. In some embodiments, the angular velocity of the electronic device 200 about three axes (i.e., the x, y, and z axes) may be determined by a gyroscope sensor. The gyro sensor may be used for photographing anti-shake. Illustratively, when the shutter is pressed, the gyroscope sensor detects the shake angle of the electronic device 200, calculates the distance to be compensated for by the lens module according to the shake angle, and enables the lens to counteract the shake of the electronic device 200 through reverse movement, thereby achieving anti-shake. The gyroscope sensor can also be used for navigation and body feeling game scenes.

The electronic device 200 may detect the opening and closing of the flip holster using a magnetic sensor. In some embodiments, when the electronic device 200 is a flip phone, the electronic device 200 may detect the opening and closing of the flip according to the magnetic sensor. And then according to the opening and closing state of the leather sheath or the opening and closing state of the flip cover, the automatic unlocking of the flip cover is set.

The acceleration sensor may detect the magnitude of acceleration of the electronic device 200 in various directions (typically three axes). The magnitude and direction of gravity can be detected when the electronic device 200 is stationary. The method can also be used for recognizing the posture of the electronic equipment, and is applied to horizontal and vertical screen switching, pedometers and other applications. It should be noted that in the embodiment of the present application, the display screen 250 of the electronic device 200 may be folded to form a plurality of screens. An acceleration sensor may be included in each screen for measuring the orientation (i.e., the directional vector of the orientation) of the corresponding screen.

The pressure sensor is used for sensing a pressure signal and converting the pressure signal into an electric signal. In some embodiments, the pressure sensor may be disposed on the display screen 250. There are many types of pressure sensors, such as resistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, and the like. The capacitive pressure sensor may be a sensor comprising at least two parallel plates having an electrically conductive material. When a force acts on the pressure sensor, the capacitance between the electrodes changes. The electronic device 200 determines the intensity of the pressure from the change in capacitance. When a touch operation is applied to the display screen 250, the electronic apparatus 200 detects the intensity of the touch operation based on the pressure sensor. The electronic apparatus 200 may also calculate the touched position based on the detection signal of the pressure sensor. In some embodiments, the touch operations that are applied to the same touch position but different touch operation intensities may correspond to different operation instructions. For example: and when the touch operation with the touch operation intensity smaller than the first pressure threshold value acts on the short message application icon, executing an instruction for viewing the short message. And when the touch operation with the touch operation intensity larger than or equal to the first pressure threshold value acts on the short message application icon, executing an instruction of newly building the short message.

The air pressure sensor is used for measuring air pressure. In some embodiments, the electronic device 200 calculates altitude, aiding in positioning and navigation, from barometric pressure values measured by a barometric pressure sensor.

A distance sensor for measuring a distance. The electronic device 200 may measure the distance by infrared or laser. In some embodiments, taking a picture of a scene, the electronic device 200 may utilize a range sensor to range to achieve fast focus.

The proximity light sensor may include, for example, a Light Emitting Diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The electronic apparatus 200 emits infrared light to the outside through the light emitting diode. The electronic device 200 detects infrared reflected light from nearby objects using a photodiode. When sufficient reflected light is detected, it can be determined that there is an object near the electronic device 200. When insufficient reflected light is detected, the electronic device 200 may determine that there are no objects near the electronic device 200. The electronic device 200 can utilize the proximity light sensor to detect that the user holds the electronic device 200 close to the ear for talking, so as to automatically turn off the display screen to achieve the purpose of saving power. The proximity light sensor can also be used in a holster mode, a pocket mode automatically unlocks and locks the screen.

The ambient light sensor is used for sensing the ambient light brightness. The electronic device 200 may adaptively adjust the brightness of the display screen 250 based on the perceived ambient light level. The ambient light sensor can also be used to automatically adjust the white balance when taking a picture. The ambient light sensor may also cooperate with the proximity light sensor to detect whether the electronic device 200 is in a pocket to prevent inadvertent contact.

The fingerprint sensor is used for collecting fingerprints. The electronic device 200 can utilize the collected fingerprint characteristics to unlock the fingerprint, access the application lock, photograph the fingerprint, answer an incoming call with the fingerprint, and the like.

The temperature sensor is used for detecting temperature. In some embodiments, the electronic device 200 implements a temperature processing strategy using the temperature detected by the temperature sensor. For example, when the temperature reported by the temperature sensor exceeds the threshold, the electronic device 200 performs a reduction in performance of a processor located near the temperature sensor, so as to reduce power consumption and implement thermal protection. In other embodiments, the electronic device 200 heats the battery 232 when the temperature is below another threshold to avoid the low temperature causing the electronic device 200 to shut down abnormally. In other embodiments, the electronic device 200 performs boosting of the output voltage of the battery 232 when the temperature is below a further threshold to avoid abnormal shutdown due to low temperature.

Touch sensors, also known as "touch panels". The touch sensor may be disposed on the display screen 250, and the touch sensor and the display screen 250 form a touch screen, which is also called a "touch screen". The touch sensor is used to detect a touch operation applied thereto or nearby. The touch sensor can communicate the detected touch operation to the application processor to determine the touch event type. Visual output associated with the touch operation may be provided through the display screen 250. In other embodiments, the touch sensor may be disposed on a surface of the electronic device 200, different from the position of the display screen 250.

The bone conduction sensor may acquire a vibration signal. In some embodiments, the bone conduction sensor may acquire a vibration signal of a human voice vibrating a bone mass. The bone conduction sensor can also contact the pulse of the human body to receive the blood pressure pulsation signal. In some embodiments, the bone conduction sensor may also be disposed in a headset, integrated into a bone conduction headset. The audio module can analyze out a voice signal based on the vibration signal of the sound part vibration bone block acquired by the bone conduction sensor, so that a voice function is realized. The application processor can analyze heart rate information based on blood pressure beating signals acquired by the bone conduction sensor, and a heart rate detection function is realized.

The wireless communication function of the electronic device 200 may be implemented by the antenna 1, the antenna 2, a mobile communication module, a wireless communication module, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the electronic device 200 may be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module may provide a solution including 2G/3G/4G/5G wireless communication applied on the electronic device 200. The mobile communication module may include at least one filter, a switch, a power amplifier, a Low Noise Amplifier (LNA), and the like. The mobile communication module can receive electromagnetic waves from the antenna 1, filter and amplify the received electromagnetic waves, and transmit the electromagnetic waves to the modem processor for demodulation. The mobile communication module can also amplify the signal modulated by the modulation and demodulation processor and convert the signal into electromagnetic wave to be radiated by the antenna 1. In some embodiments, at least part of the functional modules of the mobile communication module may be provided in the processor 210. In some embodiments, at least some of the functional modules of the mobile communication module may be provided in the same device as at least some of the modules of the processor 210.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating a low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then passes the demodulated low frequency baseband signal to a baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs a sound signal through an audio device (not limited to a speaker, a receiver, etc.) or displays an image or video through the display screen 250. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be separate from the processor 210, and may be disposed in the same device as the mobile communication module or other functional modules.

The wireless communication module may provide a solution for wireless communication applied to the electronic device 200, including Wireless Local Area Networks (WLANs) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), Global Navigation Satellite System (GNSS), Frequency Modulation (FM), Near Field Communication (NFC), Infrared (IR), and the like. The wireless communication module may be one or more devices integrating at least one communication processing module. The wireless communication module receives electromagnetic waves via the antenna 2, performs frequency modulation and filtering processing on electromagnetic wave signals, and transmits the processed signals to the processor 210. The wireless communication module may also receive a signal to be transmitted from the processor 210, frequency-modulate and amplify the signal, and convert the signal into electromagnetic waves via the antenna 2 to radiate the electromagnetic waves.

In some embodiments, antenna 1 of electronic device 200 is coupled to a mobile communication module and antenna 2 is coupled to a wireless communication module so that electronic device 200 can communicate with networks and other devices through wireless communication techniques. The wireless communication technology may include global system for mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), time-division code division multiple access (time-division code division multiple access, TD-SCDMA), Long Term Evolution (LTE), LTE, BT, GNSS, WLAN, NFC, FM, and/or IR technologies, etc. The GNSS may include a Global Positioning System (GPS), a global navigation satellite system (GLONASS), a beidou satellite navigation system (BDS), a quasi-zenith satellite system (QZSS), and/or a Satellite Based Augmentation System (SBAS).

The electronic device 200 may implement a shooting function through the ISP, the camera, the video codec, the GPU, the display screen 250, the application processor, and the like.

The ISP is used for processing the parameters fed back by the camera. For example, when a photo is taken, the shutter is opened, light is transmitted to the camera photosensitive element through the lens, the optical signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to the ISP for processing and converting into an image visible to naked eyes. The ISP can also carry out algorithm optimization on the noise, brightness and skin color of the image. The ISP can also optimize parameters such as exposure, color temperature and the like of a shooting scene. In some embodiments, the ISP may be provided in a camera.

The camera is used to capture still images or video. The object generates an optical image through the lens and projects the optical image to the photosensitive element. The photosensitive element may be a Charge Coupled Device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The light sensing element converts the optical signal into an electrical signal, which is then passed to the ISP where it is converted into a digital image signal. And the ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into image signal in standard RGB, YUV and other formats. In some embodiments, the electronic device 200 may include 1 or N cameras, N being a positive integer greater than 1.

The digital signal processor is used for processing digital signals, and can process digital image signals and other digital signals. For example, when the electronic device 200 selects a frequency bin, the digital signal processor is used to perform fourier transform or the like on the frequency bin energy.

Video codecs are used to compress or decompress digital video. The electronic device 200 may support one or more video codecs. In this way, the electronic device 200 may play or record video in a variety of encoding formats, such as: moving Picture Experts Group (MPEG) 1, MPEG2, MPEG3, MPEG4, and the like.

The NPU is a neural-network (NN) computing processor that processes input information quickly by using a biological neural network structure, for example, by using a transfer mode between neurons of a human brain, and can also learn by itself continuously. The NPU can implement applications such as intelligent recognition of the electronic device 200, for example: image recognition, face recognition, speech recognition, text understanding, and the like.

The external memory interface may be used to connect an external memory card, such as a Micro SD card, to extend the memory capability of the electronic device 200. The external memory card communicates with the processor 210 through an external memory interface to implement a parameter storage function. For example, files such as music, video, etc. are saved in an external memory card.

The internal memory may be used to store computer-executable program code, which includes instructions. The processor 210 executes various functional applications of the electronic device 200 and parameter processing by executing instructions stored in the internal memory. For example, in the embodiment of the present application, the processor 210 may determine the displacement deviation and the displacement direction of the charging coil 220 with respect to the charging coil on the charging device by executing instructions stored in the internal memory, and may prompt the user to move the electronic device 200 according to the displacement deviation and the displacement direction. The internal memory may include a program storage area and a parameter storage area. The storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like. The parameter storage area may store parameters (such as audio parameters, phone book, etc.) created during the use of the electronic device 200, and the like. In addition, the internal memory may include a high-speed random access memory, and may further include a nonvolatile memory, such as at least one of a magnetic disk storage device, a flash memory device, a universal flash memory (UFS), and the like.

The electronic device 200 may implement audio functions through an audio module, a speaker, a receiver, a microphone, an earphone interface, an application processor, and the like. Such as music playing, recording, etc.

The audio module is used for converting digital audio information into analog audio signals to be output and converting the analog audio input into digital audio signals. The audio module may also be used to encode and decode audio signals. In some embodiments, the audio module may be disposed in the processor 210, or some functional modules of the audio module may be disposed in the processor 210. Loudspeakers, also known as "horns," are used to convert electrical audio signals into sound signals. The electronic apparatus 200 may listen to music through a speaker or listen to a hands-free call. Receivers, also called "earpieces", are used to convert electrical audio signals into acoustic signals. When the electronic apparatus 200 receives a call or voice information, it is possible to receive voice by placing the receiver close to the human ear. Microphones, also known as "microphones", are used to convert sound signals into electrical signals. When a call is placed or a voice message is sent or it is desired to trigger the electronic device 200 to perform some function by the voice assistant, the user may speak via his/her mouth near the microphone and input a voice signal into the microphone. The electronic device 200 may be provided with at least one microphone. In other embodiments, the electronic device 200 may be provided with two microphones to achieve a noise reduction function in addition to collecting sound signals. In other embodiments, the electronic device 200 may further include three, four or more microphones to collect sound signals and reduce noise, and may further identify sound sources and implement directional recording functions.

The earphone interface is used for connecting a wired earphone. The earphone interface may be a USB interface, or may be an open mobile electronic device platform (OMTP) standard interface of 3.5mm, or a cellular telecommunications industry association (cellular telecommunications industry association of the USA, CTIA) standard interface.

The keys include a power-on key, a volume key and the like. The keys may be mechanical keys. Or may be touch keys. The electronic apparatus 200 may receive a key input, and generate a key signal input related to user setting and function control of the electronic apparatus 200.

The motor may generate a vibration cue. The motor can be used for incoming call vibration prompt and can also be used for touch vibration feedback. For example, touch operations applied to different applications (e.g., photographing, audio playing, etc.) may correspond to different vibration feedback effects. The motor may also respond to different vibration feedback effects for touch operations applied to different areas of the display screen 250. Different application scenes (such as time reminding, receiving information, alarm clock, game and the like) can also correspond to different vibration feedback effects. The touch vibration feedback effect may also support customization.

The indicator can be an indicator light and can be used for indicating the charging state and the electric quantity change, and also can be used for indicating messages, missed calls, notifications and the like.

The SIM card interface is used for connecting the SIM card. The SIM card can be brought into and out of contact with the electronic apparatus 200 by being inserted into and pulled out of the SIM card interface. The electronic device 200 may support 1 or N SIM card interfaces, N being a positive integer greater than 1. The SIM card interface can support a Nano SIM card, a Micro SIM card, a SIM card and the like. Multiple cards can be inserted into the same SIM card interface at the same time. The types of the plurality of cards may be the same or different. The SIM card interface may also be compatible with different types of SIM cards. The SIM card interface may also be compatible with external memory cards. The electronic device 200 interacts with the network through the SIM card to implement functions such as call and parameter communication. In some embodiments, the electronic device 200 employs esims, namely: an embedded SIM card. The eSIM card can be embedded in the electronic device 200 and cannot be separated from the electronic device 200.

The wireless charging methods in the following embodiments may be implemented in the electronic device 200 having the above-described hardware structure.

Please refer to fig. 3, which is a schematic diagram illustrating a charging apparatus 300 according to an embodiment of the present disclosure. As shown in fig. 3, the charging device 300 may include a power interface 310, a processing module 320, and a charging coil 330. When the charging device 300 is used to wirelessly charge other electronic devices, the power interface 310 is used to connect a power source, and the processing module 320 is used to process the current accessed through the power interface 310, so as to generate a stable magnetic field through the charging coil 330 to wirelessly charge the charged electronic device. For example, the charging device 300 may wirelessly charge the electronic device 200 shown in fig. 2. As shown in fig. 4, when the charging device 300 is powered on and current flows through the charging coil 330 in the charging device 300, a magnetic field is generated around the charging coil 330. When other non-energized coils (such as the charging coil 220 in the electronic device 200) approach the magnetic field, an induced current is generated on the charging coil 220 due to the principle of electromagnetic induction. The electronic device 200 can charge the battery 232 by using the induced current on the charging coil 220, thereby implementing wireless charging of the electronic device 200 by the charging device 300. The maximum power transmission distance of the wireless charging can reach about 10 centimeters.

It should be noted that, according to the wireless charging method provided in the embodiment of the present application, the charging device may be the charging device 300 shown in fig. 3, such as a charging device, or may be the electronic device 200 having the composition shown in fig. 2, which supports wireless charging of other devices, such as a mobile phone and a tablet computer. Of course, other charging devices capable of wirelessly charging other devices are also possible. The embodiments of the present application are not limited thereto.

Please refer to fig. 5, which is a flowchart illustrating a wireless charging method according to an embodiment of the present disclosure. In order to more clearly explain the method provided by the present application, the charging coil in the electronic device is referred to as a power receiving coil, and the charging coil in the charging device is referred to as a power transmitting coil. Wherein, receiving coil can be first charging coil in this application, and send electric coil can be second charging coil in this application. As shown in fig. 5, the method may include S501-S505.

S501, when the electronic equipment is charged through the power receiving coil by using the charging equipment provided with the power transmission coil, the electronic equipment determines the signal strength (signal strength) of the power receiving coil, wherein the signal strength is used for representing the magnetic field strength of the power receiving coil in the magnetic field generated by the power transmission coil.

For example, referring to fig. 6, when the power transmission coil of the charging device is connected to the power supply, the power transmission coil generates a magnetic field centered on the power transmission coil as shown in fig. 6. Generally, the magnetic field generated by the power transmission coil is isotropic. That is, the magnetic field intensity to the point where the distance from the center of the power transmission coil is the same, and the magnetic field intensity radiated outward along the center of the power transmission coil is gradually decreased. Referring to fig. 6, the magnetic field intensity at each point on each virtual coil is the same, and the farther from the center of the power transmission coil, the weaker the magnetic field intensity.

When the user brings the electronic device close to the charging device, the power receiving coil enters the magnetic field, and the electronic device can be charged through the power receiving coil by using the charging device provided with the power transmitting coil. When a charging device provided with a power transmission coil is used to charge an electronic device through a power receiving coil, an induced current is generated in the power receiving coil. The induced current and the magnetic field intensity of the current position of the power receiving coil have a corresponding relation, namely the induced current and the signal intensity of the power receiving coil have a corresponding relation. Therefore, the electronic device can determine the signal strength of the power receiving coil at that time according to the magnitude of the induced current.

S502, the electronic equipment determines the displacement deviation of the power receiving coil relative to the power transmission coil according to the signal intensity.

Since there is a correspondence between the signal strength of the power receiving coil and the distance between the two coils, the electronic apparatus can determine the displacement deviation of the power receiving coil with respect to the power transmitting coil from the signal strength.

For example, the electronic device may determine the displacement deviation according to the signal strength acquired in S501 and a mapping relationship, where the mapping relationship may include a corresponding relationship between the signal strength and the displacement deviation.

For example, the mapping relationship may be obtained as follows: and under different displacement deviations, measuring the signal intensity of the power receiving coil for multiple times to obtain the size interval of the signal intensity under the displacement deviation. And obtaining the corresponding relation between the stable signal intensity interval and the displacement deviation through repeated measurement. The mapping relation including different signal intensity intervals and displacement deviation can be obtained by summarizing the corresponding relations. The mapping relationship may be preset in the electronic device when the electronic device is shipped from a factory. The mapping relationship may be as shown in table 1, for example.

TABLE 1

Signal strength size interval	Alignment information and displacement deviation
		(80,100]	Accurate alignment
(60,80]	The contraposition has deviation, and the displacement deviation is x mm
		(40,60]	The contraposition has deviation, and the displacement deviation is 2x millimeters
(20,40]	The contraposition has deviation, and the displacement deviation is 3x millimeters
		(0,20]	The contraposition has deviation, and the displacement deviation is 4x millimeters
0	Is free of

In table 1, the larger the signal intensity value, the stronger the signal intensity, and the closer the distance from the power receiving coil to the power transmitting coil. Wherein x in the displacement deviation can be predefined or configurable, such as adjustable according to actual conditions. For example, x is 10. When the electronic device determines that the signal intensity of the power receiving coil is within the range of (80, 100), the two coils are accurately aligned without adjusting the position, when the signal intensity of the power receiving coil is within the range of (60, 80), the two coils are aligned and the displacement deviation is 10 mm, when the signal intensity of the power receiving coil is within the range of (40, 60), the two coils are aligned and the displacement deviation is 20 mm, when the signal intensity of the power receiving coil is within the range of (20, 40), the two coils are aligned and the displacement deviation is 30 mm, when the signal intensity of the power receiving coil is within the range of (0, 20), the two coils are aligned and the displacement deviation is 40 mm, and when the electronic device determines that the signal intensity of the power receiving coil is 0, the charging device does not charge the electronic device.

Therefore, the electronic equipment can determine whether the power receiving coil is aligned with the power transmission coil of the charging equipment or not according to the signal strength of the power receiving coil and the mapping relation, and can also determine a specific value of displacement deviation of the power receiving coil relative to the power transmission coil if the power receiving coil is aligned with the power transmission coil of the charging equipment.

S503, the electronic equipment acquires the magnetic field intensity of N positions on the power receiving coil, wherein N is an integer greater than or equal to 3.

The electronic apparatus may provide hall sensors at N positions on or around the power receiving coil to acquire the magnetic field strengths of the N positions on the power receiving coil in the magnetic field generated by the power transmitting coil.

For example, taking the example of disposing a hall sensor on the power receiving coil, when N is 3, please refer to fig. 7, the hall sensors may be disposed at 3 different positions (e.g., P1, P2, and P3) on the power receiving coil of the electronic device, respectively. The electronic equipment can respectively determine that the magnetic field intensity at P1 is B1, the magnetic field intensity at P2 is B2 and the magnetic field intensity at P3 is B3 through the Hall sensors at the 3 different positions.

For another example, a hall sensor is provided in the power receiving coil. When N is 4, please refer to fig. 8, hall sensors may be respectively disposed at 4 different positions (e.g., P1, P2, P3, and P4) on the power receiving coil of the electronic device. The electronic device can determine that the magnetic field strength at P1 is B1, the magnetic field strength at P2 is B2, the magnetic field strength at P3 is B3, and the magnetic field strength at P4 is B4 through hall sensors disposed at the 4 different positions, respectively.

S504, the electronic equipment determines the displacement direction of the power receiving coil relative to the power transmitting coil according to the magnetic field intensity at the N positions on the power receiving coil.

It can be understood that the relative positions of the power receiving coil and the power transmitting coil are different, and the magnetic field intensity of the magnetic field generated by the power transmitting coil is different at different positions on the power receiving coil. Thus, the relative position of the two coils, or the direction of displacement of the power receiving coil relative to the power transmitting coil, can be determined by determining the magnetic field strength at a plurality of different locations on the power receiving coil.

For example, the electronic device may determine the displacement direction of the power receiving coil relative to the power transmitting coil according to the magnitude relationship of the magnetic field strengths at N positions on the power receiving coil. The displacement direction is a direction from the geometric center of the power receiving coil to a position determined based on the magnitude relationship of the magnetic field strength. The location may be away from a location of the N locations where the magnetic field strength is smallest and close to a location of the N locations where the magnetic field strength is largest.

For example, referring to fig. 9, if the electronic device determines that the magnetic field intensity at the 1 st point is the minimum and the magnetic field intensity at the 2 nd point is the maximum according to the magnetic field intensities at least 3 points on the power receiving coil when the power receiving coil is in the magnetic field generated by the power transmitting coil, the electronic device may determine that the displacement direction of the power receiving coil relative to the power transmitting coil is along the direction of the arrow shown in fig. 7.

It can be understood that, if the user moves the power receiving coil (or the electronic device) along the displacement direction, the alignment between the power receiving coil and the power transmitting coil will be gradually accurate, and then the wireless charging speed for the electronic device will be gradually increased.

In the embodiment of the present application, the N positions may be 3 positions, 4 positions, or more positions. In the following, N-3 and N-4 are exemplified.

In some embodiments, the electronic device may determine the direction of displacement from the magnetic field strength at 3 different locations on the powered coil.

For example, referring to fig. 10, the electronic device may obtain the first magnetic field strength B1 at the first position P1, the second magnetic field strength B2 at the second position P2, and the third magnetic field strength B3 at the third position P3 by disposing hall sensors at 3 different positions (e.g., the first position P1, the second position P2, and the third position P3) on the power receiving coil.

If B1 is smaller than B2 and B1 is smaller than B3, then P1 is the point of the three points where the magnetic field strength is the smallest, and the power transmitting coil may be in the position of the first region of the power receiving coil, which is the region formed by P2, P3 and P0. The electronic device may determine the direction of displacement as the direction pointing from the geometric center P0 of the power receiving coil to the first region. When the power receiving coil is moved to the first area, the alignment between the power receiving coil and the power transmitting coil becomes accurate, and the charging speed is increased.

If B2 is smaller than B3 and B2 is smaller than B1, then P2 is the point of the three points where the magnetic field strength is the smallest, and the power transmitting coil may be located in the second region of the power receiving coil, which is the region formed by P1, P3 and P0. The electronic device may determine the direction of displacement as the direction pointing from the geometric center P0 of the power receiving coil to the second area. When the power receiving coil is moved to the second area, the alignment between the power receiving coil and the power transmitting coil becomes accurate, and the charging speed is increased.

If B3 is smaller than B1 and B3 is smaller than B2, then P3 is the point of the three points where the magnetic field strength is the smallest, and the power transmitting coil may be in the position of the third area of the power receiving coil, which is the area formed by P2, P1 and P0. The electronic device may determine the direction of displacement as the direction pointing from the geometric center P0 of the power receiving coil to the third area. When the power receiving coil is moved to the third area, the alignment between the power receiving coil and the power transmitting coil becomes accurate, and the charging speed is increased.

It should be noted that, in the embodiment of the present application, the specific direction of the displacement direction may be any position in the above-mentioned region. For example, when the magnetic field strength at the position P1 is the smallest, the specific direction of the displacement direction may be closer to P2, or closer to P3. The power receiving coil can be more accurately aligned as long as the power receiving coil moves towards the first area, and the charging speed is improved. Similarly, when the magnetic field strength at the position P2 is the smallest, the specific direction of the displacement direction may be closer to P2 or closer to P1. The specific direction of displacement may be closer to P1 or closer to P3 when the magnetic field strength at the position of P3 is minimal. The embodiments of the present application are not limited thereto.

Further, the relationship between the magnitudes of the magnetic field strengths of the other two positions included in the corresponding regions (e.g., the first region, the second region, and the third region) may be compared to determine which position in the region the position pointed by the displacement direction is closer to. For example, when the magnetic field strength at the position of P1 is minimum, if B2 is greater than B3, the displacement direction may be directed to a position closer to P2 in the first region, whereas if B2 is smaller than B3, the displacement direction may be directed to a position closer to P3 in the first region. Similarly, when the magnetic field strength at the position of P2 is minimum, if B1 is greater than B3, the displacement direction may be directed to a position closer to P1 in the second region, whereas if B1 is less than B3, the displacement direction may be directed to a position closer to P3 in the second region. When the magnetic field strength at the position of P3 is minimum, if B1 is greater than B2, the displacement direction may be directed to a position closer to P1 in the third region, whereas if B1 is less than B2, the displacement direction may be directed to a position closer to P2 in the third region.

In other embodiments, the electronic device may determine the displacement direction of the power receiving coil relative to the power transmitting coil by arranging hall sensors at 4 different positions on the power receiving coil to obtain the magnetic field strengths at the 4 different positions on the power receiving coil.

For example, referring to fig. 11, the electronic device may obtain the first magnetic field strength B1 at the first position P1, the second magnetic field strength B2 at the second position P2, the third magnetic field strength B3 at the third position P3, and the fourth magnetic field strength B4 at the fourth position P4 on the power receiving coil by disposing hall sensors at 4 different positions (e.g., the first position P1, the second position P2, the third position P3, and the fourth position P4) on the power receiving coil. In order to clarify the positional relationship of P1, P2, P3 and P4, P1, P2, P3 and P4 are arranged in an example in the counterclockwise direction.

If B1 is maximum and B2 is greater than B4, the electronics can determine the displacement direction to be the direction pointing from the geometric center P0 of the powered coil to region a. Region a is a region formed by midpoints of the lines connecting P1, P0, P1 and P2.

If B2 is maximum and B1 is greater than B3, the electronics can determine the displacement direction to be the direction pointing from the geometric center P0 of the powered coil to region B. Region B is a region formed by midpoints of the lines connecting P2, P0, P1 and P2.

If B2 is maximum and B3 is greater than B1, the electronics can determine the displacement direction to be the direction pointing from the geometric center P0 of the powered coil to region C. Region C is a region formed by midpoints of the lines connecting P2, P0, and P3 with P2.

If B3 is maximum and B2 is greater than B4, the electronics can determine the displacement direction to be the direction pointing from the geometric center P0 of the powered coil to region D. Region D is a region formed by midpoints of the lines connecting P3, P0, P3 and P2.

If B3 is maximum and B4 is greater than B2, the electronics can determine the displacement direction to be the direction pointing from the geometric center P0 of the powered coil to region E. Region E is a region formed by midpoints of the lines connecting P3, P0, and P3 with P4.

If B4 is maximum and B3 is greater than B1, the electronic device may determine the displacement direction as the direction pointing from the geometric center P0 of the power receiving coil to the region F. Region F is a region formed by midpoints of the lines connecting P4, P0, P3 and P4.

If B4 is maximum and B1 is greater than B3, the electronics can determine the displacement direction to be the direction pointing from the geometric center P0 of the powered coil to region G. The region G is a region constituted by midpoints of the lines connecting P4, P0, P1 and P4.

If B1 is maximum and B4 is greater than B2, the electronic apparatus may determine the displacement direction as the direction pointing to the region H from the geometric center P0 of the power receiving coil. Region H is a region formed by midpoints of the lines connecting P1, P0, P1 and P4.

It can be understood that, when the power receiving coil moves along the displacement direction, the power receiving coil gradually approaches to a position aligned with the power transmitting coil accurately, and the speed of wireless charging can be increased.

In the embodiment of the application, the position of the Hall sensor arranged on the power receiving coil can be selected randomly or symmetrically and uniformly.

For example, referring to fig. 12, taking N as 4, the position of the hall sensor on the current-receiving coil is symmetrically and uniformly selected. On the power receiving coil, taking the geometric center P0 of the coil as an origin, four points with the same distance from P0 are selected in the east, south, west and north directions of the origin respectively: p1, P2, P3 and P4, hall sensors may be provided at the positions of the 4 points, respectively. Thus, the electronic device can acquire the magnetic field strength of the 4 points, and further determine the relative position of the power transmitting coil and the power receiving coil in the coordinate system shown in fig. 12.

Assuming that the magnetic field strength at the position P1 is Be, the magnetic field strength at the position P2 is Bs, the magnetic field strength at the position P3 is Bw, and the magnetic field strength at the position P4 is Bn, the specific orientation of the power transmission coil relative to the power receiving coil can Be determined according to the magnitude relationship of Bs, Bw, Be and Bn.

For example, if the magnetic field strength Be detected by the east hall sensor is the largest and the magnetic field strengths detected by the north and south hall sensors are equal (Bn ═ Bs), the electronic device may determine that the power transmitting coil is in the east direction of the power receiving coil, as shown in fig. 13, and thus, the electronic device may determine that the displacement direction is directed to the east direction by the geometric center P0 of the power receiving coil.

If the magnetic field strengths detected by the two northeast hall sensors are equal (Be ═ Bn) and greater than the magnetic field strengths detected by the two southwest hall sensors, i.e., Be ═ Bn > Bs ═ Bw, then the electronic device can determine that the power transmitting coil is in the direction directly northeast (45 ° to the north of the east) of the power receiving coil, as shown in fig. 14, and thus the electronic device can determine that the displacement direction is directed to the direction directly northeast by the geometric center P0 of the power receiving coil.

If the magnetic field strength Be detected by the east hall sensor is greater than the magnetic field strength Bn detected by the north hall sensor, and the magnetic field strength detected by the northeast hall sensor is greater than the magnetic field strength detected by the southwest hall sensor, i.e., Be > Bn > Bs > Bw, the electronic device can determine that the power transmitting coil is within 45 ° of the northeast of the power receiving coil, as shown in fig. 15, and thus, the electronic device can determine that the displacement direction is a direction pointing from the geometric center P0 of the power receiving coil to within 45 ° of the northeast.

By analogy, the electronic device can roughly confirm eight different relative orientations of the power transmitting coil with respect to the power receiving coil, and thereby determine the direction of the displacement direction.

It should be noted that, in the above example, the 4 positions are symmetrically and uniformly selected, and the displacement direction can be corresponded to a geographic coordinate system, such as the east direction shown in fig. 13, so that the displacement direction can be described more conveniently. In the embodiment of the present application, if the 4 positions are selected at will, according to the above method, at least 8 different displacement directions can still be determined to indicate the relative positions of the power receiving coil and the power transmitting coil in the current state.

It can be understood that, comparing the two examples of N-3 and N-4, when N becomes larger, that is, when the magnetic field strengths of more points are selected on the power receiving coil for comparison, the electronic device can divide the area within 360 ° with the geometric center of the power receiving coil as the origin into more areas, so that the determined displacement direction is more accurate. In the practical use process of the embodiment of the application, the value of N can be set according to practical situations within an integer range greater than or equal to 3, that is, the displacement direction can be determined by setting more hall sensors. The embodiments of the present application are not limited thereto.

And S505, the electronic equipment prompts a user to move the electronic equipment according to the displacement deviation and the displacement direction, wherein the moving direction is the direction indicated by the displacement direction, and the moving distance is the distance indicated by the displacement deviation.

For example, when the electronic device determines that there is a misalignment between the power receiving coil and the power transmitting coil, the electronic device may display a guidance interface according to the displacement misalignment and the displacement direction. The guidance interface may include a first prompt message and a second prompt message. The first prompt message is used for prompting the user of the direction of moving the electronic equipment, and the direction is the direction indicated by the displacement direction. The second prompt message is used to prompt the user for the distance at which the electronic device is moved, which is indicated by the displacement deviation.

For example, when the electronic apparatus determines that the relative position of the power transmitting coil and the power receiving coil is the relative position shown in fig. 14, the electronic apparatus may display the guidance interface shown in (a) in fig. 16. As shown in fig. 16 (a), the guidance interface may include a first prompt message thereon, such as an arrow 1601 with a direction shown in fig. 16 (a), where the arrow 1601 may be used to prompt the user to move the electronic device along the arrow direction. The guidance interface may also display a schematic of the positions of the two coils as a second prompt. Wherein, the black filled circle may represent the position of the power transmitting coil, and the white filled circle may represent the position of the power receiving coil. The distance of the two circles on the guide interface may be used to indicate the distance indicated by the displacement deviation. The larger the displacement deviation is, the farther the center distance of the two circles is, and conversely, the smaller the displacement deviation is, the closer the center distance of the two circles is. The displacement deviation indicated by the interface shown in (a) in fig. 16 is smaller than the displacement deviation indicated by the interface shown in (b) in fig. 16.

For another example, when the electronic device determines that the relative position of the power transmitting coil and the power receiving coil is the relative position shown in fig. 13, the electronic device may display a guidance interface as shown in fig. 17. The detailed description of the guidance interface shown in fig. 17 is similar to that of the guidance interface shown in fig. 16, and is not repeated here.

Optionally, the guidance interface displayed by the electronic device may further include third prompt information. For example, when the electronic device is a mobile phone, the third prompt message may be a word "charging wirelessly (displacement is deviated, please move the mobile phone as shown in the figure)" as shown in (a) of fig. 16, so as to further show to the user that the electronic device needs to be moved to increase the charging speed.

It should be noted that, after the user moves the electronic device according to the guide interface displayed by the electronic device, the electronic device may repeatedly perform the above S501-S505, so that the electronic device can determine the alignment condition of the two coils during the process of moving the electronic device by the user. The electronic device can refresh the displayed guide interface according to a certain period so as to display the displacement deviation and the displacement direction of the two coils at the current position. Of course, the electronic device may also maintain the guidance interface displayed when the electronic device starts to perform wireless charging until the electronic device is moved to a position where the two coils are aligned correctly.

In some embodiments, when the electronic device is moved to a position where the two coils are aligned accurately by the user, the electronic device may display a related interface for prompting the user that the two coils are aligned accurately at the current position of the electronic device, so that the electronic device can be charged at the fastest speed. Illustratively, when the electronics determine that the two coils have been aligned, an interface such as that shown in FIG. 18 may be displayed. Wherein, since the two coils are already aligned, the displacement deviation is very small or 0, so the electronic device can display a "Good" word or other words or symbols for prompting the user that there is no displacement deviation between the two coils currently. In addition, the electronic device may further display two concentric circles for prompting a user that the geometric centers of the two coils are overlapped currently, that is, the two coils are aligned accurately. Further, the interface may further include prompt information for prompting that the two coils do not have displacement deviation or have small displacement deviation and do not need to move when the current electronic device is located by the user. For example, the prompt message may be in the form of "charging wirelessly (shift OK)" as shown in fig. 18.

It should be noted that, if the electronic device determines that there is no misalignment between the power receiving coil and the power transmitting coil, and if the electronic device determines that the signal strength of the power receiving coil is within the range of (80, 100) in S502, the electronic device may display an interface as shown in fig. 18, which is used to prompt the user that there is no large misalignment between the power receiving coil and the power transmitting coil under the current position of the electronic device, so that the electronic device can be charged with high efficiency without moving the electronic device during charging.

In this way, the electronic device determines the displacement deviation of the two coils by determining the signal intensity generated by the power receiving coil in the magnetic field generated by the power transmitting coil, so as to determine the distance between the power receiving coil and the position where the power receiving coil should be located when the alignment is accurate. The electronic device also determines the direction of displacement of the power receiving coil relative to the power transmitting coil by determining the magnetic field strength at different locations on the power receiving coil. According to the displacement deviation and the displacement direction, the electronic equipment can prompt a user to move the corresponding distance of the electronic equipment along the displacement direction. Therefore, the rapid alignment of the power transmission coil and the power receiving coil is realized, and the purpose of improving the wireless charging speed is realized. Meanwhile, the method provided by the embodiment of the application has no limitation on the external dimension of the electronic equipment, so that the purpose of improving the wireless charging speed can be achieved by the method for the electronic equipment with different dimensions and capable of being wirelessly charged.

The scheme provided by the embodiment of the application is mainly introduced from the perspective of electronic equipment. It is understood that the electronic device comprises corresponding hardware structures and/or software modules for performing the respective functions in order to realize the above-mentioned functions. Those of skill in the art will readily appreciate that the present application is capable of hardware or a combination of hardware and computer software implementing the various illustrative algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the electronic device may be divided into the functional modules according to the method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

In the case of dividing the respective function modules by corresponding respective functions, fig. 19 shows a schematic diagram of a possible logical composition of the electronic device related to the above embodiment, which is provided with the first charging coil, and as shown in fig. 19, the electronic device may include: determining unit 1901, acquiring unit 1902, and presenting unit 1903.

The determining unit 1901 is configured to determine a signal strength (signal strength) of the first charging coil when the electronic device is charged through the first charging coil using a charging device provided with a second charging coil, where the signal strength is used to represent a magnetic field strength of the first charging coil in a magnetic field generated by the second charging coil. Illustratively, the determining unit 1901 may be configured to perform S501 as shown in fig. 5.

The determining unit 1901 is further configured to determine a displacement deviation of the first charging coil relative to the second charging coil according to the signal strength. Illustratively, the determining unit 1901 may also be configured to execute S502 shown in fig. 5.

An obtaining unit 1902 is configured to obtain magnetic field intensities at N positions on the first charging coil, where N is an integer greater than or equal to 3. Illustratively, the obtaining unit 1902 may be configured to perform S503 shown in fig. 5.

The determining unit 1901 is further configured to determine a displacement direction of the first charging coil relative to the second charging coil according to magnetic field strengths at N locations on the first charging coil. Illustratively, the determining unit 1901 may also be configured to execute S504 shown in fig. 5.

A prompting unit 1903, configured to prompt the user to move the electronic device according to the displacement deviation and the displacement direction, where the moving direction is a direction indicated by the displacement direction, and the moving distance is a distance indicated by the displacement deviation. Illustratively, the prompting unit 1903 may be configured to execute S505 shown in fig. 5.

In one possible design, the determining unit 1901 is specifically configured to determine a displacement direction of the first charging coil relative to the second charging coil according to a magnitude relationship of magnetic field strengths at N locations on the first charging coil. Wherein the displacement direction is a direction pointing from the geometric center of the first charging coil to a position away from the position of the N positions where the magnetic field strength is the smallest and to a position close to the position of the N positions where the magnetic field strength is the largest.

In one possible design, when N is 3, the obtaining unit 1902 is specifically configured to obtain a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2, and a third magnetic field strength B3 at a third position P3 on the first charging coil. Here, if B1 is smaller than B2, and B1 is smaller than B3, the displacement direction is specifically a direction in which the geometric center P0 of the first charging coil points to the first region, which is a region composed of P2, P3, and P0. If B2 is smaller than B3, and B2 is smaller than B1, the displacement direction is specifically a direction pointing from the geometric center P0 of the first charging coil to the second region, which is a region composed of P1, P3, and P0. If B3 is smaller than B1, and B3 is smaller than B2, the displacement direction is specifically a direction pointing from the geometric center P0 of the first charging coil to the third region, which is a region composed of P1, P1, and P0.

In one possible design, hall sensors are provided at P1, P2, and P3, respectively, of the first charging coil. The obtaining unit 1902 is specifically configured to obtain B1 through the hall sensor disposed at P1, obtain B2 through the hall sensor disposed at P2, and obtain B3 through the hall sensor disposed at P3.

In one possible design, when N is 4, the obtaining unit 1902 is specifically configured to obtain a first magnetic field strength B1 at a first position P1, a second magnetic field strength B2 at a second position P2, a third magnetic field strength B3 at a third position P3, and a fourth magnetic field strength B4 at a fourth position P4 on the first charging coil. Wherein P1, P2, P3, and P4 are arranged in a counterclockwise direction on the first charging coil. Wherein, if B1 is the largest and B2 is larger than B4, the displacement direction is specifically the direction pointing from the geometric center P0 of the first charging coil to region a, which is the region composed of the midpoints of the lines connecting P1, P0, and P1 with P2. If B2 is largest and B1 is larger than B3, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region B, which is the region made up of the midpoints of the lines connecting P2, P0, and P1 with P2. If B2 is largest and B3 is larger than B1, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region C, which is the region consisting of the midpoints between the lines connecting P2, P0, and P3 with P2. If B3 is largest and B2 is larger than B4, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region D, which is the region consisting of the midpoints between the lines connecting P3, P0, and P3 with P2. If B3 is largest and B4 is larger than B2, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region E, which is the region made up of the midpoints of the lines connecting P3, P0, and P3 with P4. If B4 is largest and B3 is larger than B1, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region F, which is the region made up of the midpoints of the lines connecting P4, P0, and P3 with P4. If B4 is largest and B1 is larger than B3, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region G, which is the region consisting of the midpoints between the lines connecting P4, P0, and P1 with P4. If B1 is largest and B4 is larger than B2, the displacement direction is specifically the direction from the geometric center P0 of the first charging coil to region H, which is the region consisting of the midpoints of the lines connecting P1, P0, and P1 with P4.

In one possible design, hall sensors are provided at P1, P2, P3, and P4, respectively, of the first charging coil. The obtaining unit 1902 is specifically configured to obtain B1 through a hall sensor disposed at P1, obtain B2 through a hall sensor disposed at P2, obtain B3 through a hall sensor disposed at P3, and obtain B4 through a hall sensor disposed at P4.

In a possible design, the prompt unit 1903 is specifically configured to display a guidance interface according to the displacement deviation and the displacement direction, where the guidance interface includes a first prompt message and a second prompt message. The first prompt message is used for prompting the user of the direction of moving the electronic equipment, and the direction prompted by the first prompt message is the direction indicated by the displacement direction. The second prompt message is used for prompting the user of the distance of the mobile electronic equipment, and the distance prompted by the second prompt message is the distance indicated by the displacement deviation.

In one possible design, the determining unit 1901 is specifically configured to determine the signal strength according to the induced current on the first charging coil.

In one possible design, the determining unit 1901 is specifically configured to determine the displacement deviation according to the signal strength and a mapping relationship, where the mapping relationship includes a correspondence relationship between the signal strength and the displacement deviation.

It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again. The electronic device provided by the embodiment of the application is used for executing the functions of the electronic device in the method, so that the same effect as the communication method can be achieved. Alternatively, but not necessarily, it is understood that, in the embodiment of the present application, the functions of the determining unit 1901, the obtaining unit 1902, and the prompting unit 1903 may be implemented by separate hardware modules, or separate software modules, or by a way that a common hardware processing platform executes program instructions.

The embodiment of the present application further provides an electronic device, which may include a first charging coil, a charging management module, a processor, and a memory. Wherein the first charging coil, the charge management module, the processor and the memory are coupled. The memory may be used to store computer program code comprising computer instructions. The computer instructions, when executed by the electronic device, cause the electronic device to perform a wireless charging method as shown in fig. 5.

The embodiment of the application also provides a chip system, which is applied to the electronic equipment comprising the first charging coil; as shown in fig. 20, the system-on-chip includes at least one processor 2001 and at least one interface circuit 2002. The processor 2001 and the interface circuit 2002 may be interconnected by wires. For example, the interface circuit 2002 may be used to receive signals from other devices (e.g., a memory of an electronic device). Also for example, the interface circuit 2002 may be used to send signals to other devices (e.g., the processor 2001 or a display screen of an electronic device). Illustratively, the interface circuit 2002 may read instructions stored in a memory and send the instructions to the processor 2001. The instructions, when executed by the processor 2001, may cause the electronic device to perform the various steps in the embodiments described above. Of course, the chip system may further include other discrete devices, which is not specifically limited in this embodiment of the present application.

The functions or actions or operations or steps, etc., in the above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the present application are all or partially generated upon loading and execution of computer program instructions on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include such modifications and variations.