Electric vehicle wireless charging device automatic alignment system and method

Abstract

The invention provides an electric vehicle wireless charging device automatic alignment system and method. The system comprises a wireless charging starting button, a wireless charging receiving device, a wireless charging transmitting device, an image recognition automatic locating device and a moving control driving device, wherein the image recognition automatic locating device obtains the distance between the wireless charging transmitting device and the wireless charging receiving device according to collected information, and controls the moving control driving device and the wireless charging receiving device to move in the horizontal direction and the longitudinal direction. According to the electric vehicle wireless charging device automatic alignment system and method, a mobile wireless receiving device is adopted to achieve automatic alignment, compared with a method in which a driver uses a park assist system, the complicated parking procedures are reduced, the installation is simple, and the cost is lowered; the relative distance of a wireless transceiving device is obtained through a binocular vision system, through a horizontal control driving device, a longitudinal control driving device and a vertical lifting control driving device, the purpose that the receiving device moves in the vertical direction is achieved, and the problem that charging efficiency of vehicles is low when underpans differ in height is solved.

Description

technical field [0001] The invention belongs to the technical field of wireless charging, and in particular relates to an automatic alignment system and method for a wireless charging device of an electric vehicle. Background technique [0002] The development of new energy vehicles is the need to realize my country's energy security, environmental protection and the leapfrog and sustainable development of China's auto industry. With the emergence of a series of national incentive policies for new energy vehicles, more and more new energy vehicles have entered thousands of households. At the same time, some problems of new energy vehicles have gradually emerged. The charging of electric vehicles has become a A big problem for drivers. During this time, wireless charging technology has been greatly developed. [0003] At present, a major bottleneck for the rapid entry of electric vehicle wireless charging technology into the market is the charging efficiency of wireless cha...

AI Technical Summary

Problems solved by technology

[0004] The current wireless charging technologies are mainly as follows. One is to use the driver to align the receiving coil on the car with the transmitting coil on the ground with the help of the parking system. This method requires a special visual alignment system, and the driver must The act of aligning the first charge is also very cumbersome, very inconvenient to use, and also increases the cost of the vehicle itself

The second is to increase the number of coils at the transmitting end. The coil at the transmitting end is a coil group composed of multiple coils. The system allows the transmitting coil closest to the receiving coil to work according to the parking position of the electric vehicle, thereby achieving a certain degree of alignment. This method needs to greatly increase the number of coils, which will lead to a sharp increase in cost, and because there will be blind spots where the coils do not cover, this method also has considerable limitations.

The third is to control the movement of the wireless transmitting coil on the ground. This method needs to open a large-scale recessed space on the parking space to arrange the mobile device of the transmitting device, and the device must be flexible on the basis of mobile positioning. It has strong support performance to ensure that the car can bear the weight of the car body when it passes through the device. To realize this scheme, the construction work is relatively large, and the cost of realizing the device is also relatively large

[0005] In the current wireless charging device, whether the driver aligns the transceiver device with the help of the parking assist system or the alignment through the movement of the coil, each has its own shortcomings. Some only consider the alignment of the transceiver device in the horizontal direction, but do not Considering that the height of the chassis of different cars is different, the distance in the vertical direction of the transceiver device is too large, which affects the charging efficiency to a certain extent.

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