The invention provides a determination circuit for confirming the connection state of a charging wire harness, and the determination circuit is characterized in that a vehicle key power supply is connected with a wake-up interface of a BMS module through a diode D1, a charging auxiliary power supply is connected with the wake-up interface of the BMS module through a diode D2, and the grounding end of the charging auxiliary power supply is provided with a relay; a contact of the relay is arranged on the grounding end of the CC2 detection port of the BMS module, one end of the contact of the relay is connected with the CC2 detection port, the other end of the contact of the relay is connected with the resistor R1, and the other end of the resistor R1 is grounded. A low-speed vehicle power battery system, namely a BMS module matched with national standard charging, is adopted, a CC2 detection signal circuit can be prefabricated on a power supply circuit of the BMS module to be output to a CC2 detection end of the BMS module according to the circuit design scheme adopted by the application file, awakening power sources of the BMS can be distinguished in a non-national standard charging circuit, and the awakening efficiency of the BMS is improved. Therefore, whether the charging gun is connected or not is determined, and the discharging relay is switched off when the charging gun is connected.

    本发明提出了一种充电线束连接状态的确认的判定电路,包括整车钥匙电源通过二极管D1与BMS模块的唤醒接口连接,充电辅助电源通过二极管D2与BMS模块的唤醒接口连接,充电辅助电源的接地端上设置有继电器,所述BMS模块的CC2检测端口接地端上设置有继电器的触点,继电器的触点一端与CC2检测端口连接,另一端与电阻R1连接,所述电阻R1另一端接地。本申请文件采用低速车动力电池系统,即带匹配国标充电的BMS模块,本申请文件采用的电路设计方案,可以在BMS模块供电电路上预制一个CC2检测信号电路输出至BMS模块的CC2检测端,实现在非国标充电电路中也能区分BMS的唤醒电源,从而确定充电枪是否连接,进而在充电枪连接时断开放电继电器。


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    Title :

    Judgment circuit for confirming connection state of charging wire harness and judgment method thereof


    Additional title:

    一种充电线束连接状态的确认的判定电路及其判定方法


    Contributors:
    HUANG XIAOYAN (author) / DENG BING (author) / SHAN LIANGLIANG (author)

    Publication date :

    2023-04-25


    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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