The invention discloses a power battery heating control method, an electric vehicle and a medium, and the method comprises the steps: obtaining the charging and discharging power and heating power of a power battery when an external power supply is connected to a power battery heating system; the expected current of the three-phase winding is obtained according to the charging and discharging power and the heating power; and controlling the current in the second phase winding and the third phase winding in the three-phase motor based on the expected current of the second phase winding and the third phase winding in the expected current of the three-phase winding and the sampling current of the second phase winding and the third phase winding. Through an external power supply and multiplexing a circuit structure during boost charging, the effect of controlling the charging and discharging current of the power battery is achieved, the problem that the self-heating effect of the power battery cannot be carried out when the electric quantity of the power battery is exhausted or is low is solved, and the heating efficiency of the power battery is improved.

    本申请公开了一种动力电池加热控制方法、电动汽车及介质,该方法包括:当外接电源接入动力电池加热系统时,获取动力电池的充放电功率和加热功率;根据充放电功率和加热功率,获得三相绕组的期望电流;基于所述三相绕组的期望电流中的第二相绕组和第三相绕组的期望电流、以及第二相绕组和第三相绕组的采样电流,对三相电机中的第二相绕组和第三相绕组中的电流进行控制,通过在无需三相电机绕组中性点引出的基础上,通过外接电源和复用升压充电时的电路结构,实现动力电池充放电电流控制的效果,解决动力电池电量耗尽或电量较低时,无法进行动力电池自加热的效果,提升了动力电池的加热效率。


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    Title :

    Power battery heating control method, electric vehicle and medium


    Additional title:

    动力电池加热控制方法、电动汽车及介质


    Contributors:
    LIU LIBO (author) / JIN XIAOLONG (author)

    Publication date :

    2022-07-29


    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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