The invention discloses an electric vehicle wireless charging system and a control method, and relates to the field of wireless electric energy transmission, in the system, a PFC module converts a power frequency AC voltage from a power grid into an intermediate stage DC voltage; the high-frequency inverter inverts the intermediate-stage direct-current voltage; the switchable topological structure comprises an auxiliary inductor Lf1, a main inductor L1 and a switch K1; the auxiliary inductor Lf1 is connected with the main inductor L1 in parallel, and the main inductor L1 is connected with the switch K1 in series; the auxiliary inductor Lf1 and the main inductor L1 are orthogonal decoupling coils; the switchable topological structure controls the on-off of the switch K1 according to the configuration of the vehicle-mounted end equipment, so that energy transfer through the auxiliary inductor Lf1 or the main inductor L1 is realized; under the influence of the alternating magnetic field, the receiving coil induces high-frequency alternating voltage and forms resonance with the secondary side compensation network, and then the high-frequency alternating voltage is transmitted to the battery for charging through the rectifier module and the chopper module. According to the invention, intelligent adaptation of multi-vehicle-type equipment can be realized.
本发明公开一种电动汽车无线充电系统及控制方法,涉及无线电能传输领域,该系统中PFC模块将自电网的工频交流电压变换为中间级直流电压;高频逆变器对中间级直流电压进行逆变;可投切拓扑结构包括:辅助电感Lf1、主电感L1以及开关K1;辅助电感Lf1与主电感L1并联,主电感L1与开关K1串联;辅助电感Lf1和主电感L1为正交解耦线圈;可投切拓扑结构根据车载端设备的构型控制开关K1的通断,进而实现通过辅助电感Lf1传能或主电感L1传能;接收线圈在交变磁场的影响下,感应出高频交流电压,并与副边补偿网络形成谐振,进而将高频交流电压通过整流模块以及斩波模块传递至电池进行充电。本发明能够实现多车型设备的智能适配。
Electric vehicle wireless charging system and control method
一种电动汽车无线充电系统及控制方法
2023-10-10
Patent
Electronic Resource
Chinese
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