The invention provides a finished automobile low-voltage power supply protection circuit, a control method and an electric automobile, in a fast charging state of the electric automobile, the finished automobile low-voltage power supply protection circuit comprises a fast charging port socket, a relay, a voltage stabilizing diode and a vehicle-mounted battery management system which are sequentially connected in series, the negative pin end is connected with a vehicle body ground wire, the positive pin end is electrically connected with the input end of the relay, the output end of the relay is electrically connected with the input end of the voltage stabilizing diode, and the output end of the voltage stabilizing diode is electrically connected with the input end of the vehicle-mounted battery management system. In the whole vehicle low-voltage power supply protection circuit, the circuit board of the vehicle-mounted battery management system is directly protected by connecting the relay and the voltage stabilizing diode between the vehicle-mounted battery management system and the charging pile in series, so that the vehicle-mounted battery management system is further protected, and the cost of the electric vehicle is reduced.

    本发明提供一种整车低压供电保护电路、控制方法及电动汽车,在电动汽车的快充状态下,整车低压供电保护电路包括依次串联连接的快充口插座、继电器、稳压二极管和车载电池管理系统,其中,快充口插座具有正极引脚端和负极引脚端,负极引脚端连接车身地线,正极引脚端与继电器的输入端电性连接,继电器的输出端与稳压二极管的输入端电性连接,稳压二极管的输出端与车载电池管理系统输入端电性连接。在整车低压供电保护电路中,通过在车载电池管理系统与充电桩之间串联入继电器和稳压二极管的方式对车载电池管理系统电路板进行直接防护,使得车载电池管理系统得到了进一步的保护,降低了电动汽车的成本。


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    Title :

    Whole vehicle low-voltage power supply protection circuit, control method and electric vehicle


    Additional title:

    整车低压供电保护电路、控制方法及电动汽车


    Contributors:
    WANG TAO (author) / LI YUAN (author) / LIU XIN (author)

    Publication date :

    2022-03-18


    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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