The invention belongs to the technical field of insulation detection, and particularly relates to a battery system insulation fault detection method and device. The method comprises the following steps: carrying out insulation fault detection on a charging battery system, if an insulation fault is detected, storing the insulation fault, and disconnecting a charging contactor; if it is detected that an insulation fault occurs in the charging battery system, insulation fault detection is conducted on the battery system again within the first set time from charging completion to whole vehicle power-off, and if no insulation fault is detected, the stored insulation fault is eliminated; and if the insulation fault is detected again, the stored insulation fault is maintained, so that the problem that the vehicle can be successfully charged only after the insulation fault latch is firstly cleared when the vehicle is charged next time due to the insulation fault of the charging pile is solved, and the safety risk caused by lagging of real-time detection of the insulation abnormity of the battery system when the vehicle is charged next time is avoided.

    本发明属于绝缘检测技术领域,具体涉及一种电池系统绝缘故障检测方法及装置。该方法包括:对正在充电的电池系统进行绝缘故障检测,若检测到绝缘故障,则存储绝缘故障,断开充电接触器;若检测到正在充电的电池系统出现绝缘故障,则在充电结束到整车下电的第一设定时间内,重新对电池系统进行绝缘故障检测,若并未检测到绝缘故障,则消除存储的绝缘故障;若再次检测到绝缘故障,保持存储的绝缘故障,解决了由于充电桩绝缘故障导致车辆下次充电时需要先清除绝缘故障锁存后才能成功充电的问题,并且避免了下次充电时由于电池系统绝缘异常实时检测滞后带来的安全风险。


    Access

    Download


    Export, share and cite



    Title :

    Battery system insulation fault detection method and device


    Additional title:

    一种电池系统绝缘故障检测方法及装置


    Contributors:
    WANG GUOQIANG (author) / ZHU WEIMENG (author) / GUO XU (author) / SUN WEI (author) / ZHANG HONGTAO (author)

    Publication date :

    2024-10-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen




    Insulation resistance detection device and fault detection method

    IZUMITANI JUNJI / NAKAO YOSHIHIRO | European Patent Office | 2023

    Free access

    INSULATION FAULT DETECTION DEVICE, ELECTRICAL POWER SUPPLY SYSTEM, AND A METHOD FOR DETECTING AN INSULATION FAULT

    COSTES DAVID / UTVIC MILAN / CARRUPT AURÉLIEN | European Patent Office | 2024

    Free access

    Insulation resistance detection device and fault detection method

    IZUMITANI JUNJI / NAKAO YOSHIHIRO | European Patent Office | 2023

    Free access