Position-recognizable wireless charging device for electric vehicle

Abstract

The invention discloses a position-recognizable wireless charging device for an electric vehicle. The position-recognizable wireless charging device comprises a wireless charging transmitting plate, a lifting mechanism, a transverse moving mechanism, a position sensor, a distance sensor and a controller; the position sensor collects position information of the wireless charging receiving plate and transmits the position information to the controller; the distance sensor collects the vertical distance between the wireless charging transmitting plate and the wireless charging receiving plate and transmits the vertical distance to the controller; the controller controls the transverse moving mechanism to work according to the position information of the wireless charging receiving plate so that the wireless charging transmitting plate can move in the horizontal direction, and the controller further controls the transverse moving mechanism to move in the horizontal direction according to the vertical distance information between the wireless charging transmitting plate and the wireless charging receiving plate on the electric vehicle bottom plate, and the lifting mechanism is controlled to work to enable the wireless charging transmitting plate to move in the vertical direction so that the wireless charging transmitting plate and the wireless charging receiving plate correspond up and down in position, and the vertical distance meets the requirement. When charging is started, the position of the receiving plate can be automatically identified, and the relative position between the two plates is ensured by moving the transmitting plate.

Description

technical field [0001] The invention belongs to the field of new energy vehicles, in particular to a wireless charging device capable of position identification for electric vehicles. Background technique [0002] With the rapid development of the world economy, fossil fuel resources have become increasingly scarce and can no longer meet people's resource needs, so looking for an alternative clean energy has become the focus of attention. As the equipment that consumes the most energy, the cleanliness of automobiles has become one of the focuses of discussion. In order to reduce the consumption of fossil fuels by automobiles, people have begun to design automobiles driven by electricity, gas and hybrid energy. Automobiles are the most in line with people's requirements for energy conservation and environmental protection, so they are now the focus of research. Charging equipment is an important infrastructure in the development of electric vehicles, but now most of the char...

AI Technical Summary

Problems solved by technology

Among them, electromagnetic induction technology is only suitable for low-power wireless charging due to its limited transmission distance, and cannot meet the requirements of electric vehicles for wireless charging; the disadvantage of radio wave technology is that it will generate large heat and cause energy loss, and the efficiency is too low , nor is it suitable for high-power electric vehicle wireless charging equipment

Electromagnetic resonance technology can realize high-power transmission and is most suitable for wireless charging of electric vehicles, but this method has very high requirements for the position between the receiving board and the transmitting board, and the position between the two boards is shifted or the distance is too far. The impact on the charging efficiency is very large, so if you want to use this method to realize the wireless charging of electric vehicles, you must ensure the accurate relative position between the two charging plates

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