The invention discloses a high-voltage protection method and device of an electric automobile and the electric automobile, and the method comprises the steps: collecting the input voltage and the output voltage of each high-voltage device in a whole automobile loop through a CAN network; comparing the input voltage and the output voltage of each high-voltage device, and identifying the interlocking state of each high-voltage device; and when the interlocking state is a fault state, the high-voltage switch of the whole vehicle loop is disconnected, determining a fault point based on the high-voltage device in the fault state, and sending fault information to a preset terminal. Therefore, the problem that maintenance personnel need to check and test each connection part to check the fault due to abnormal disconnection of the loop is solved, high-voltage electric shock accidents are effectively prevented, the safety of the whole vehicle is ensured, the fault point is quickly positioned, and the check and maintenance efficiency is improved.

    本申请公开了一种电动汽车的高压保护方法、装置及电动汽车,其中,方法包括:通过CAN网络采集整车环路中每个高压器件的输入电压和输出电压;将每个高压器件的输入电压和输出电压进行对比,识别每个高压器件的互锁状态;在互锁状态为故障状态时,断开整车环路的高压开关的同时,基于故障状态的高压器件确定故障点,发送故障信息至预设终端。由此,解决了因发生环路异常断开,维修人员需要对每个连接部位进行检查和测试,来排查此故障的问题,有效防止高压触电事故,保证整车安全,快速定位故障点,提高检查维修效率。


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    Title :

    High-voltage protection method and device for electric automobile and electric automobile


    Additional title:

    电动汽车的高压保护方法、装置及电动汽车


    Contributors:
    TAO WENYONG (author) / QIAN ZHAOGANG (author) / SHU HUI (author) / WANG YING (author) / HANG MENGXUN (author) / FENG ZHIMIN (author) / SHA WENHAN (author) / LIU LIN (author)

    Publication date :

    2021-06-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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