阅读说明：本技术 一种多接收自适应无线充电发射线圈 (Multi-receiving self-adaptive wireless charging transmitting coil ) 是由 强浩 薛宇飞 吴振裕 肖菲杭 牛辉 张柯炜 于 2021-01-07 设计创作，主要内容包括：本发明涉及一种多接收自适应无线充电发射线圈,包括区域检测及状态检测模块、中央处理器、线圈调节模块；所述区域检测及状态检测模块用于检测充电区域内待充电设备的位置以及待充电设备的充电状态,所述区域检测及状态检测模块与所述中央处理器信号连接,用于将充电区域内待充电设备的位置以及待充电设备的充电状态发送给中央处理器,所述中央处理器与线圈调节模块信号连接,所述线圈调节模块用于控制继电器状态。本发明能够高效,节能的完成发射线圈的开关以及功率控制。(The invention relates to a multi-receiving self-adaptive wireless charging transmitting coil, which comprises an area detection and state detection module, a central processing unit and a coil adjusting module, wherein the area detection and state detection module comprises a wireless coil and a wireless coil control module; the device comprises a central processing unit, a coil adjusting module and a region detection and state detection module, wherein the region detection and state detection module is used for detecting the position of a device to be charged in a charging region and the charging state of the device to be charged, the region detection and state detection module is in signal connection with the central processing unit and is used for sending the position of the device to be charged in the charging region and the charging state of the device to be charged to the central processing unit, the central processing unit is in signal connection with the coil adjusting module, and the coil adjusting module is used for controlling the state of a. The invention can efficiently and energy-saving complete the switching and power control of the transmitting coil.)

1. The utility model provides a receive wireless transmitting coil that charges of self-adaptation more, as wireless transmitting terminal that charges which characterized in that: the system comprises an area detection and state detection module, a central processing unit and a coil adjustment module; the device comprises a central processing unit, a coil adjusting module and a region detection and state detection module, wherein the region detection and state detection module is used for detecting the position of a device to be charged in a charging region and the charging state of the device to be charged, the region detection and state detection module is in signal connection with the central processing unit and is used for sending the position of the device to be charged in the charging region and the charging state of the device to be charged to the central processing unit, the central processing unit is in signal connection with the coil adjusting module, and the coil adjusting module is used for controlling the state of a.

2. The multi-receive adaptive wireless charging transmit coil of claim 1, wherein: the transmitting coil is composed of a plurality of groups of regular hexagonal planar coils with the same size, and each group of planar coils are arranged adjacently.

3. The multi-receive adaptive wireless charging transmit coil of claim 2, wherein: each group of the planar coils consists of three circles of concentric regular hexagon closed coils.

4. The multi-receive adaptive wireless charging transmit coil of claim 3, wherein: the line spacing of the three circles of regular hexagonal closed coils is the same.

5. The multi-receive adaptive wireless charging transmit coil of claim 4, wherein: each group of planar coils are all on the same horizontal plane.

6. A multi-receive adaptive wireless charging transmit coil according to claim 3 or 4, wherein: the hexagonal coils in each group of planar coils are all connected with the relays in series to control the on-off of the adjacent coils.

Technical Field

The invention relates to a multi-receiving self-adaptive wireless charging transmitting coil.

Background

In recent years, with the popularization of wireless charging equipment, the performance and quality requirements of various wireless charging devices are gradually increased, and the conventional one-to-one charging mode cannot meet the daily use requirements of people. In a user scene, the situation that a plurality of devices such as a mobile phone, a watch and an earphone need to be charged simultaneously is rare, and the traditional one-to-one wireless charger is not enough to meet the requirements of the user in the scene, so that the convenience of wireless charging is seriously influenced. Therefore, the design scheme of the one-to-many wireless power supply is changed, and a plurality of devices can be charged simultaneously. Considering that the power of different devices is different, how to coordinate the power and frequency of different coils and how to improve the transmission efficiency of the power supply is a first problem to be solved urgently in the field of wireless charging application.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the switching and power control of the transmitting coil can be completed efficiently and energy-efficiently. To overcome these problems, the present invention provides a multi-receive adaptive wireless charging transmit coil.

The technical scheme adopted by the invention for solving the technical problems is as follows: the system comprises an area detection and state detection module, a central processing unit and a coil adjustment module; the device comprises a central processing unit, a coil adjusting module and a region detection and state detection module, wherein the region detection and state detection module is used for detecting the position of a device to be charged in a charging region and the charging state of the device to be charged, the region detection and state detection module is in signal connection with the central processing unit and is used for sending the position of the device to be charged in the charging region and the charging state of the device to be charged to the central processing unit, the central processing unit is in signal connection with the coil adjusting module, and the coil adjusting module is used for controlling the state of a.

Furthermore, the transmitting coil is composed of a plurality of groups of regular hexagonal planar coils with the same size, and each group of planar coils are arranged adjacently. Thus, a plurality of hexagons can be arranged on the same plane tightly without redundant gaps.

Further, each group of the planar coils consists of three circles of concentrically arranged regular hexagonal closed coils. Thereby facilitating connection with an adjacent hexagonal coil through a relay.

Further, the wire pitches of the three circles of regular hexagonal closed coils are the same. Thereby enabling better connection and alignment with adjacent coils.

Further, each group of planar coils are all on the same horizontal plane. All coils are above the same plane to facilitate connection between the individual coils.

Furthermore, the hexagonal coils in each group of planar coils are connected with the relays in series to control the on-off of the adjacent coils. The relay can realize the on-off of the circuit through a normally open and normally closed switch.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a block diagram of a multiple receive adaptive wireless charging transmit coil of the present invention;

FIG. 2 is a single coil operational block diagram of the multiple receive adaptive wireless charging transmit coil of the present invention;

FIG. 3 is a schematic diagram of multiple coil operating modes of a multi-receive adaptive wireless charging transmit coil of the present invention;

FIG. 4 is a diagram of the multiple coil operating configuration of the multiple receive adaptive wireless charging transmit coil of the present invention;

FIG. 5 is a diagram illustrating the power transmission effect of a single coil in the multi-receiving adaptive wireless charging transmitting coil operation mode according to the present invention;

FIG. 6 is a diagram showing the power transmission effect of two coils in the operating mode of the multi-receiving adaptive wireless charging transmitting coil according to the present invention;

FIG. 7 is a diagram of the power transmission effect of the multi-receiver adaptive wireless charging transmitting coil in three coil operating modes;

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1: the 3 transmit coils listed are formed by 3 regular hexagonal small coils, each layer of each coil connecting the coil in parallel with a resonant capacitor 16, 17, 18, 19, 20, 21, 22, 23, 24. Relays 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15 are arranged in the coils to control the opening and the closing of the coils, and each layer of coils is provided with a relay which opens and closes the corresponding coil according to the instruction of the coil adjusting and transmitting module. The 3 small coils are also connected by adopting a relay, and when the small coils work independently, the relays among the 3 coils are in a disconnected state. The copper wire in the coil is wound by adopting a hexagonal winding method, and the shape of the copper wire is the same as that of the coil and is a regular hexagon.

As shown in fig. 2: when the wireless power supply is in a small coil working state, the mechanical structure control device of the wireless power supply operates as shown in the figure. In the figure, the relay arranged on the coil is in a conducting state, and the broken line part grafted between the coils is the relay in a disconnected state. In the figure, the solid line portion is the coil in the on state, and the dashed line portion is the line in the off state (on in the large coil operation mode, off in the small coil operation mode). The 3 small coils are provided with independent working circuits, and the coil adjusting and transmitting module can respectively start one small coil, two small coils or 3 small coils to simultaneously start according to actual needs so as to transmit electric energy for the charging equipment.

As shown in fig. 3: when the wireless power supply is in a large coil working state, the connection condition of the coil is as shown in the figure. At this time, 4 sides of each of the 3 small regular hexagonal coils are in an operating state, the relays 5, 10, 15 are switched, and 2 sides are switched under the control of the relays 1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 13, 14 to form a closed loop as shown in the figure. Each layer of the coil is connected with the resonance capacitor in a parallel connection mode.

As shown in fig. 4: when the wireless power supply is in a large coil working state, the mechanical structure control device of the wireless power supply operates as shown in the figure. A relay on each layer of coils controls the opening and closing of the internal circuit, so that the outer sides of 3 small coils are connected to form a closed loop. At this time, the internal circuit of the 3 small coils is in an open state due to the control of the relay, and therefore does not participate in the operation. In this state, the coil adjusting and transmitting module starts the large coil on the outer side to transmit electric energy to the charging equipment.

As shown in fig. 5: when the wireless power supply is in the small coil working mode, a single charging device can be charged, and the receiving coil of the charging device is positioned above the corresponding transmitting coil. The relays 1, 2, 3, 4 or 6, 7, 8, 9 or 11, 12, 13, 14 close a small coil loop, and when the coil is in an operating state, current flows through the inside. The power supply is provided with 3 transmitting coils, and the transmitting coils can respectively and independently transmit electric energy to the charging equipment above the power supply.

As shown in fig. 6: when the wireless power supply is in a small coil working mode, a plurality of charging devices can be charged at the same time, and receiving coils of the charging devices are located above corresponding transmitting coils. When the coil is in a working state, current flows through the coil, and the wireless power supply is used for charging two devices at the same time in the illustrated state. The power supply has 3 transmitting coils, and can simultaneously transmit electric energy for 3 charging devices at most.

As shown in fig. 7: when the wireless power supply is in a large coil working mode, the receiving coil of the charging device is located in the middle area of the whole power supply. When the coil is in a working state, current flows through the coil. In this state, the resonant circuits of the three transmitting coils operate simultaneously, and the power of the wireless power supply reaches a maximum.

The working process of the invention is as follows:

the invention has two working modes, namely a small coil working mode and a large coil working mode. The wireless power supply will start the corresponding mode according to the actual requirement.

After the charging equipment is placed in the charging area, the area detection module detects the charging equipment and transmits the position information and the electric quantity information to the coil adjusting and transmitting module. And the coil adjusting and transmitting module sends out a corresponding instruction according to the obtained information, the on-off control is carried out on the relay of the corresponding coil, and the corresponding coil enters a working state after current is introduced. The bottom of each coil is loaded with a resonant circuit, and the resonant circuit transmits electric energy to the charging equipment at a proper frequency to charge the charging equipment.

When the charging device is a low-power device such as an earphone and a watch, the wireless power supply starts a small coil working mode. In this mode, if only one charging device is provided, only the coil in the corresponding area of the device is started, so that unnecessary power consumption is reduced, and the charging device is more environment-friendly. If there are a plurality of battery charging outfits, then can start a plurality of coils, charge for these equipment simultaneously, can bring more convenient experience for the user.

If the charging equipment is equipment such as a mobile phone and the like which needs higher charging power, the wireless power supply starts a large coil working mode. As more and more mobile phones and devices support wireless charging and wireless quick charging, the invention can simultaneously provide two charging modes of low power and high power. Under the large coil working mode, the invention can provide high-power wireless power output, save the charging time of a user and provide better experience.

And after the charging equipment finishes charging, sending a signal for stopping charging according to the charging protocol. And after receiving the information of stopping charging, the region detection module transmits the information to the coil adjusting and transmitting module. And the coil adjusting and transmitting module issues a stop instruction to a relay of a corresponding coil, the current in the coil disappears, the transmitting coil stops supplying power, and the charging process is finished.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.