The embodiment of the invention relates to the field of vehicle control, in particular to a vehicle battery switching system and method. The system comprises a main power supply battery pack and an auxiliary battery pack, the main power supply battery pack and the auxiliary battery pack are communicated with a load circuit through a first switching circuit and a second switching circuit respectively, the main power supply battery pack and the auxiliary battery pack are connected with a vehicle control unit (VCU) through a first battery management system (BMS) and a second BMS respectively, the first BMS is used for controlling the external discharging function or the charging function of the main power supply battery pack through the first switching circuit, and the second BMS is used for controlling the external discharging function or the charging function of the auxiliary battery pack through the second switching circuit. When the voltage of the main power supply battery pack is too high or damaged, the auxiliary battery pack is connected to the load circuit, and the voltage of the second battery pack and the voltage of the load circuit are detected during connection, thereby avoiding device damage caused by too large difference between the two voltages.

    本发明实施例涉及车辆控制领域,尤其涉及一种车辆电池切换系统及方法。该系统包括:主供电电池组和辅助电池组,主供电电池组和辅助电池组分别通过第一切换电路和第二切换电路连通负载电路,主供电电池组和辅助电池组分别通过第一电池管理系统BMS和第二BMS连接整车控制器VCU,其中,第一BMS,用于通过第一切换电路控制主供电电池组的对外放电功能或者充电功能,第二BMS,用于通过第二切换电路控制辅助电池组的对外放电功能或者充电功能。当主供电电池组电压过高或损坏时,将辅助电池组接入负载电路,并且接入时检测第二电池组电压与负载电路电压,避免因二者差值过大引起器件损伤。


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    Title :

    Vehicle battery switching system and method


    Additional title:

    车辆电池切换系统及方法


    Contributors:

    Publication date :

    2022-05-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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