The invention relates to the technical field of electric vehicle direct-current charging, and provides an electric vehicle direct-current charging system, an electric vehicle and a direct-current charging method. The electric vehicle direct current charging system comprises a vehicle control module; the first end of the first switch switching module is electrically connected with the communication port of the adapter, and the third end of the second switch switching control module is electrically connected with the vehicle-mounted OBC; the resistance detection module is electrically connected with the adapter to detect the resistance of the adapter; the first end of the second switch switching module is electrically connected with the power output end of the adapter, and the second end of the second switch switching module is electrically connected with the original vehicle battery pack; and the first voltage detection module is electrically connected with the first end of the second switch switching module, and the first voltage detection module is electrically connected with the vehicle control module. According to the direct-current charging system of the electric vehicle, automatic detection of the adapter is achieved, and the alternating-current charging socket can be directly used for conducting low-voltage direct-current charging on the original vehicle battery pack without using a DC/DC module.

    本申请涉及电动车直流充电技术领域,提供一种电动车直流充电系统、电动车及直流充电方法。电动车直流充电系统,包括:车辆控制模块;第一开关切换模块的第一端与转接头的通信端口电连接,第二开关切换控制模块的第三端与车载OBC电连接;电阻检测模块与转接头电连接以检测转接头的电阻;第二开关切换模块的第一端与转接头的电源输出端电连接,第二开关切换模块的第二端与原车电池包电连接;第一电压检测模块,与第二开关切换模块的第一端电连接,第一电压检测模块与车辆控制模块电连接。根据本申请实施例的电动车直流充电系统,实现了对转接头的自动检测,无需使用DC/DC模块,即可直接使用交流充电插座对原车电池包进行低压直流充电。


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    Title :

    Electric vehicle direct current charging system, electric vehicle and direct current charging method


    Additional title:

    电动车直流充电系统、电动车及直流充电方法


    Contributors:
    MO JIAQUAN (author)

    Publication date :

    2023-08-04


    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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