阅读说明：本技术 一种基于电动汽车的无线充电装置 (Wireless charging device based on electric automobile ) 是由 仝利锋 黄建 刘威 于 2018-07-04 设计创作，主要内容包括：本发明涉及一种基于电动汽车的无线充电装置,属于新能源电动汽车无线充电应用领域。该无线充电装置包括车辆位置定位层和充电单元,该车辆位置定位层包括用于定位电动汽车停车位置的压力传感器阵列,该充电单元包括原边线圈、水平驱动机构和控制器,该控制器与该水平驱动机构控制连接,该控制器与该压力传感器阵列采样连接,该水平驱动机构用于带动该原边线圈在水平面内移动。本发明根据压力传感器阵列获知车辆的压力分布获知车辆的具体停放位置,再结合车辆档案获知车载副边线圈实际位置,然后控制器就控制水平驱动机构实现原副线圈快速准确的匹配对准。(The invention relates to a wireless charging device based on an electric automobile, and belongs to the field of new energy electric automobile wireless charging application. The wireless charging device comprises a vehicle position positioning layer and a charging unit, wherein the vehicle position positioning layer comprises a pressure sensor array used for positioning the parking position of the electric automobile, the charging unit comprises a primary coil, a horizontal driving mechanism and a controller, the controller is in control connection with the horizontal driving mechanism, the controller is in sampling connection with the pressure sensor array, and the horizontal driving mechanism is used for driving the primary coil to move in the horizontal plane. According to the invention, the specific parking position of the vehicle is obtained according to the pressure distribution of the vehicle obtained by the pressure sensor array, the actual position of the vehicle-mounted secondary coil is obtained by combining the vehicle file, and then the controller controls the horizontal driving mechanism to realize the rapid and accurate matching alignment of the primary coil and the secondary coil.)

1. The wireless charging device based on the electric automobile is characterized by comprising a vehicle position positioning layer and a charging unit, wherein the vehicle position positioning layer comprises a pressure sensor array used for positioning the parking position of the electric automobile, the charging unit comprises a primary coil, a horizontal driving mechanism and a controller, the controller is in control connection with the horizontal driving mechanism, the controller is in sampling connection with the pressure sensor array, and the horizontal driving mechanism is used for driving the primary coil to move in a horizontal plane.

2. The wireless charging device based on electric vehicle of claim 1, wherein the charging unit is located in a set space below the vehicle position locating layer.

3. The wireless charging device based on the electric automobile of claim 2, wherein the charging unit further comprises a lifting driving mechanism for driving the primary coil to move in a vertical direction.

4. The wireless electric vehicle-based charging device according to claim 3, wherein at least two strip-shaped areas are arranged side by side on the vehicle position location layer, and the pressure sensor array is located in the strip-shaped areas.

5. The wireless charging device based on the electric automobile according to claim 4, wherein the vehicle position locating layer is provided with convex protrusions between the strip-shaped areas, and the protrusions are used for lifting the ascending space of the primary coil.

6. The wireless charging device based on the electric automobile according to claim 4, wherein the vehicle position locating layer is provided with a hollowed-out hole between the strip-shaped areas, and the hollowed-out hole is used for lifting a rising space of the primary coil.

7. The wireless charging device based on electric vehicles of claim 1, characterized in that, the wireless charging device further comprises a parking attitude monitoring unit, the parking attitude monitoring unit comprises at least two distance sensors, and the controller is connected with the distance sensors in a sampling manner.

8. The electric vehicle-based wireless charging device according to claim 7, wherein the distance sensor is an infrared distance sensor, an ultrasonic distance sensor, a laser distance sensor, and/or a radar distance sensor.

Technical Field

The invention relates to a wireless charging device based on an electric automobile, and belongs to the field of new energy electric automobile wireless charging application.

Background

The wireless charging technology is a new charging technology, and the magnetic field coupling type wireless charging technology is suitable for high-power wireless charging of electric vehicles at present. In the magnetic field coupling type wireless charging technology, when the centers of a primary coil and a secondary coil are aligned, the charging efficiency is highest, and if the primary coil and the secondary coil are coupled and deviated, serious magnetic leakage can occur to influence the charging efficiency; in addition, when the working air gaps of the primary coil and the secondary coil are within 200mm, the working air gaps have no influence on the charging efficiency basically, but once the working air gaps exceed 200mm, the charging efficiency is inversely proportional to the working air gaps, and the larger the working air gaps are, the lower the charging efficiency is.

At present, when an electric vehicle adopting a wireless charging mode in the market enters a wireless charging station for charging, a driver generally performs positioning alignment according to a positioning instruction of a vehicle-mounted electronic indicating system or a positioning mark of the charging station, but the method has the following defects: 1. in order to meet the positioning requirements of different vehicle types, a charging station needs to be provided with various positioning marks, and the positioning marks are difficult to identify and easy to damage by a driver; 2. due to the fact that the requirement for the alignment accuracy of the primary coil and the secondary coil in the wireless charging technology is high, the primary coil and the secondary coil can be aligned only by the fact that a driver repeatedly moves a vehicle, and the process is slow and low in efficiency. Therefore, how to ensure accurate and rapid matching and alignment of the primary coil of the wireless charging device and the secondary coil installed on the electric vehicle is a problem to be solved urgently in large-scale commercial use of the wireless charging device of the electric vehicle.

Disclosure of Invention

The invention aims to provide a wireless charging device based on an electric automobile to solve the problem that the existing wireless charging device cannot accurately and quickly finish the alignment of a primary coil and a secondary coil.

In order to achieve the above object, the present invention provides a wireless charging device based on an electric vehicle, including a vehicle position locating layer and a charging unit, where the vehicle position locating layer includes a pressure sensor array for locating a parking position of the electric vehicle, the charging unit includes a primary coil, a horizontal driving mechanism and a controller, the controller is in control connection with the horizontal driving mechanism, the controller is in sampling connection with the pressure sensor array, and the horizontal driving mechanism is used to drive the primary coil to move in a horizontal plane.

In the scheme, the vehicle position positioning layer can acquire the pressure distribution of a vehicle on the vehicle position positioning layer according to the pressure sensor array information, and then the accurate position of the secondary coil on the vehicle relative to the primary coil in the charging unit is acquired by combining the archive information (including but not limited to the position of the secondary coil on the vehicle, the ground clearance and the like) of the vehicle, and then the controller controls the horizontal driving mechanism to move the primary coil to the position opposite to the secondary coil according to the accurate position, so that the rapid and accurate matching alignment of the primary coil and the secondary coil is realized.

In addition, the wireless charging device based on the electric vehicle according to the present invention may further have the following additional technical features:

in the present invention, the charging unit is located in a set space below the vehicle position locating layer.

The charging unit is arranged below the parking position, so that the arrangement of the charging unit in actual use is facilitated.

In the invention, the charging unit further comprises a lifting driving mechanism for driving the primary coil to move along the vertical direction.

The lifting driving mechanism in the scheme can adjust the distance between the primary and secondary coils during wireless charging according to different charging vehicle types so as to ensure the wireless charging efficiency of different charging vehicle types.

In the invention, at least two strip-shaped areas are arranged on the vehicle position positioning layer side by side, and the pressure sensor array is positioned in the strip-shaped areas.

This scheme sets up the banded region on vehicle position location layer with the pressure sensor array, can improve the availability factor of pressure sensor array, reduces overall cost.

In the present invention, the vehicle position locating layer is provided with a convex protrusion between the band-shaped areas, the protrusion serving to lift the rising space of the primary coil.

The vehicle position location layer in this scheme has set up the convex part that makes progress, has reserved sufficient space for primary coil rebound, makes primary coil have the ability and more be close to the chassis of the vehicle that charges, and then has guaranteed to carry out wireless charging's charge efficiency to the higher vehicle (such as passenger train, truck etc.) in chassis.

In the invention, the vehicle position positioning layer is provided with hollow holes between the strip-shaped areas, and the hollow holes are used for lifting the lifting space of the primary coil.

The vehicle position location layer in this scheme has set up the fretwork hole, the space of having set aside for primary coil rebound makes primary coil have the ability and more is close to the chassis of vehicle that charges, and then has guaranteed to carry out wireless charging's charge efficiency to the higher vehicle (for example passenger train, truck etc.) in chassis.

In the invention, the wireless charging device also comprises a parking attitude monitoring unit, the parking attitude monitoring unit comprises at least two distance sensors, and the controller is connected with the distance sensors in a sampling manner.

The parking gesture monitoring unit is arranged in the scheme, the gesture deviation of the vehicle during parking can be judged in real time according to the distance between the vehicle and each distance sensor, and when the parking gesture monitoring unit is specifically implemented, the acousto-optic device can be matched to remind a driver to ensure a proper parking gesture, so that the operation difficulty of alignment of an original secondary coil is reduced, and the alignment efficiency is improved.

In the present invention, the distance sensor is an infrared distance sensor, an ultrasonic distance sensor, a laser distance sensor and/or a radar distance sensor.

Drawings

Fig. 1 is a schematic diagram of an embodiment of a wireless charging device based on an electric vehicle according to the present invention;

FIG. 2 is a schematic view of one embodiment of a vehicle position-locating layer of the present invention;

FIG. 3 is a schematic view of an embodiment of a vehicle position-locating layer including a projection according to the present invention;

FIG. 4 is a schematic view of an embodiment of a vehicle position locating layer including a via according to the present invention;

wherein 1 is an electric automobile, 2 is a vehicle-mounted communication unit, 3 is a parking posture monitoring unit, 3-1, 3-2 and 3-3 are infrared distance sensors, 3-4 are indicator lamps, 4 is a vehicle position positioning layer, 4-1 is a first pressure sensor array, 4-2 is a second pressure sensor array, 4-3 is a protruding part, 4-4 is a hollowed hole, 5-1 is a vehicle-mounted secondary coil, 5-2 is a primary coil, 6 is a horizontal direction driving mechanism, 6-1 is a horizontal guide rod mounting bracket, 6-2 is a horizontal X-axis direction driving motor, 6-3 is a horizontal Y-axis direction driving motor, 7 is a vertical direction driving mechanism, 7-1 is a vertical direction driving guide rod, 7-2 is a vertical direction driving motor, and 8 is a controller.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.