The invention provides a hybrid power system for an electric vehicle, a control method of the hybrid power system and the electric vehicle. The hybrid power supply system for the electric vehicle comprises a main battery pack fixedly installed on the electric vehicle, and the output end of the main battery pack is electrically connected with the input end of a load; the battery replacement battery pack is detachably mounted on the electric vehicle; the input end of the power converter is electrically connected with the output end of the battery replacement battery pack, and the output end of the power converter is connected with the output end of the main battery pack in parallel; and the energy manager is respectively in communication connection with the battery pack and the power converter. The one-way power converter can prevent brake feedback current from being reversely charged into the battery replacement battery pack, and the feedback current can only be charged into the main battery pack. When it is detected that the main battery pack is not fully charged or is in a discharging state, the energy manager controls the power converter to perform full-load constant-power output to supply power to the load or charge the main battery pack, so that the battery pack is discharged preferentially.
本发明提供一种电动汽车用混合电源系统及其控制方法、电动汽车。本发明中的电动汽车用混合电源系统,包括:主电池包,固定安装在电动汽车上,主电池包的输出端与负载的输入端电连接;换电电池包,可拆卸地安装在电动汽车上;电源变换器,该电源变换器的输入端与换电电池包的输出端电连接,电源变换器的输出端与主电池包的输出端并联连接;以及能源管理器,与换电电池包和电源变换器分别通信连接。单向电源变换器能够防止刹车回馈电流反充入换电电池包内,回馈电流只能充入主电池包内。当检测到主电池包未充满电或处在放电状态,能源管理器就控制电源变换器满负荷恒功率输出,为负载供电或给主电池包充电,从而让换电电池包优先放电。
Hybrid power supply system for electric automobile, control method of hybrid power supply system and electric automobile
电动汽车用混合电源系统及其控制方法、电动汽车
2022-03-04
Patent
Electronic Resource
Chinese
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