Method and system for dynamic wireless charging self-start of electric vehicle based on location detection

Abstract

The application relates to the technical field of wireless charging of electric vehicles, and particularly discloses a dynamic wireless charging self-starting method and system for electric vehicles based on position detection, which can determine whether a vehicle enters a charging area and drives away from the charging area by detecting the difference between the inverter output currents of the first and last transmitting coils in the case of no receiving coil and the case of a receiving coil, and can complete the determination by detecting the inverter output current only; for the subsequent transmitting coils, the induced voltage generated by the coupling between the coils is compared with a threshold value to start the coils. The method and system can accurately position the electric vehicle, realize accurate control and switching of the transmitting coils, ensure the high reliability of the system, do not increase additional detection devices, are easy to operate, can significantly reduce the complexity and cost of the system, and achieve the purposes of effectively saving electric energy and realizing accurate charging.

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