Research on the cooperative working principle of coupling mechanism in driving wireless charging for electric vehicle

The dynamic charging technology of electric vehicle (EV) is a new kind of charging method, which can solve the problem of long charging time, low energy density and limited driving distance. This paper is more focus on the optimization design of receiving coil of the EV driving wireless charging system. And an innovative multi-coupling structure that can cooperative operate is proposed. By building system model, the effects on the system transmission efficiency caused by the cooperative operating between coils in different situations is discussed. A prototype is built to experiment on the driving wireless charging process of EV. The results indicated that the system transmission efficiency can be improved by the cooperative operating mode between coils, and the receiving coil designed by this article meets the needs of practical application.