The invention provides an electric vehicle low-voltage power supply system and an electric vehicle. The electric vehicle low-voltage power supply system comprises a direct-current voltage conversion module, a battery management module, an energy storage module and a load. The first positive electrode of the DC voltage conversion module is electrically connected with the first end of the battery management module, and the second positive electrode of the DC voltage conversion module is electrically connected with one end of the load and the positive electrode of the energy storage module. The negative electrode of the direct-current voltage conversion module is electrically connected with the grounding end of the battery management module, the negative electrode of the energy storage module and the other end of the load. The positive electrode of the energy storage module is electrically connected with the second end of the battery management module, and the negative electrode of the energy storage module is electrically connected with the grounding end of the battery management module; the direct-current voltage conversion module receives a control instruction of the battery management module, responds to the control instruction, supplies power to the battery management module and a load after the whole vehicle is powered off, and charges the energy storage module when the energy storage module lacks power; and the energy storage module provides an auxiliary source for the direct-current voltage conversion module, so that power is supplied to equipment of the whole vehicle after the whole vehicle is powered off.

    本申请提供一种电动汽车低压供电系统及电动汽车,包括:直流电压变换模块、电池管理模块、储能模块以及负载;直流电压变换模块的第一正极与电池管理模块的第一端电连接,直流电压变换模块的第二正极分别与负载的一端以及储能模块的正极电连接,直流电压变换模块的负极分别与电池管理模块的接地端、储能模块的负极以及负载的另一端电连接;储能模块的正极与电池管理模块的第二端电连接,储能模块的负极与电池管理模块的接地端电连接;直流电压变换模块接收电池管理模块的控制指令,响应控制指令,在整车下电后向电池管理模块和负载供电,并在储能模块亏电时向储能模块充电;储能模块向直流电压变换模块提供辅源,实现整车下电后给整车设备供电。


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    Title :

    Electric automobile low-voltage power supply system and electric automobile


    Additional title:

    电动汽车低压供电系统及电动汽车


    Contributors:
    CUI LIZHI (author) / LIU SHUO (author) / ZHANG QINGLING (author) / ZHANG ZIQIANG (author)

    Publication date :

    2025-03-18


    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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