The invention belongs to the technical field of wireless charging of electric automobiles, and relates to a magnetic coupler system and a relay coil switching method. Specifically, when the magnetic coupler system operates wireless charging and the efficiency is reduced, an alternating current switch controls a circuit, and the magnetic coupler system operates in a two-coil state or a three-coil state so as to improve the efficiency; and through efficiency discrimination, whether the magnetic coupler system is in a two-coil operation state or a three-coil operation state under an offset condition is selected. Under the condition that coil parameters of the magnetic coupler system are not changed, the efficiency is ensured to be not lower than 90% in the shifting process of the magnetic coupler system by controlling the relay coil switching, and the anti-shifting capability of wireless charging for an electric vehicle is effectively improved.
本发明属于电动汽车无线充电技术领域,涉及一种磁耦合器系统及中继线圈切换方法,具体是:当磁耦合器系统在运行无线充电,出现效率下降时,利用交流开关控制电路,使磁耦合器系统选择在两线圈或者三线圈状态运行,以提升效率;通过效率判别,选择磁耦合器系统在偏移情况下,是处于两线圈运行状态,还是处于三线圈运行状态。本发明在不改变磁耦合器系统的线圈参数的情况下,通过控制中继线圈切换,确保在磁耦合器系统偏移的过程中,效率不低于90%,有效地提高了电动汽车用无线充电的抗偏移能力。
Magnetic coupler system and relay coil switching method
一种磁耦合器系统及中继线圈切换方法
01.06.2021
Patent
Elektronische Ressource
Chinesisch
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