The embodiment of the invention provides a battery heating circuit, a control method and an electric vehicle, and relates to the technical field of power batteries. The battery heating circuit comprises a battery pack assembly, a power switch tube assembly, a half-bridge relay and a vehicle driving motor, the battery pack assembly comprises a first battery and a second battery which are connected in series; the power switch tube assembly comprises three half-bridge assemblies, one end of each half-bridge assembly is connected with the positive electrode of the first battery, and the other end of each half-bridge assembly is connected with the negative electrode of the second battery; one end of the half-bridge relay is connected between the first battery and the second battery, and the other end of the half-bridge relay is connected to one half-bridge assembly in the power switch tube assembly; the vehicle driving motor comprises three cables, and the three cables of the vehicle driving motor are correspondingly connected with the three half-bridge assemblies respectively. The battery heating circuit can achieve the technical effect of battery self-heating in the parking state or the driving state of the vehicle.

    本申请实施例提供一种电池加热电路、控制方法及电动车辆,涉及动力电池技术领域。该电池加热电路包括电池包组件、功率开关管组件、半桥继电器和车辆驱动电机;电池包组件包括第一电池和第二电池,第一电池和第二电池串联;功率开关管组件包括三个半桥组件,半桥组件的一端连接第一电池的正极,半桥组件的另一端连接第二电池的负极;半桥继电器的一端连接在第一电池和第二电池之间,所示半桥继电器的另一端连接在功率开关管组件中的一个半桥组件;车辆驱动电机包括三根电缆,车辆驱动电机的三根电缆分别对应连接三个半桥组件。该电池加热电路可以实现车辆停车状态或行车状态下均可进行电池自加热的技术效果。


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    Title :

    Battery heating circuit, control method and electric vehicle


    Additional title:

    一种电池加热电路、控制方法及电动车辆


    Contributors:
    XIA ZHULIANG (author) / HU ZHIHUA (author) / LIU JIEYU (author) / ZHAO XIAOKUN (author) / ZHANG JIN (author) / ZENG FANYI (author)

    Publication date :

    2022-12-09


    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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