The invention discloses an alternating current charging control method, device and system for an electric vehicle, and the method comprises the steps: judging whether the SOC of a power battery pack reaches a set electric quantity value or not in an alternating current charging process; if the set electric quantity value is reached, judging whether the BMS automatically triggers a normal power-off instruction or not; if the normal power-off instruction is not triggered, judging whether a set abnormal power-off condition is met or not; and if any abnormal power-off condition is met, disconnecting the AC charging interface from the high-voltage distribution box, and executing a dormancy action of the BMS. The condition that the set electric quantity is reached but the BMS does not trigger the normal power-off instruction in the alternating current charging process is analyzed and judged, when the set abnormal power-off condition is met, the BMS is only skipped to directly control and disconnect the connection between the alternating current charging interface and the high-voltage distribution box, and the dormancy action of the BMS is executed; the power-off dormancy action can be carried out in time when normal power-off cannot be carried out due to the BMS fault, and the problem that a battery has a large thermal failure risk due to the BMS fault in the related technology is solved.

    一种电动汽车交流充电控制方法、装置及系统,其包括:交流充电过程中,判断动力电池包的SOC是否达到设定电量值;若达到设定电量值,判断BMS是否自动触发正常下电指令;若未触发正常下电指令,判断是否满足设定的异常下电条件;若满足任意异常下电条件,断开交流充电接口与高压配电盒的连接,并执行BMS的休眠动作。通过在交流充电过程中对达到了设定电量但BMS未触发正常下电指令的情况进行分析判断,在满足设定的异常下电条件时,仅跳过BMS直接控制断开交流充电接口与高压配电盒的连接,并执行BMS的休眠动作,实现能够在BMS故障导致无法正常下电时及时进行下电休眠动作,解决了相关技术中BMS故障导致电池存在较大热失效的风险的问题。


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    Title :

    Alternating current charging control method, device and system for electric vehicle


    Additional title:

    一种电动汽车交流充电控制方法、装置及系统


    Contributors:
    SEAN (author) / CHENG YAO (author) / WANG JIEXING (author) / CHENG KAI (author) / ZHAO JIANSHENG (author) / WANG BIN (author) / DONG GUOXIONG (author) / JING LINPU (author) / FU YING (author)

    Publication date :

    2024-01-30


    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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