The invention discloses a vehicle insulation fault diagnosis method, device and equipment and a storage medium, and belongs to the technical field of hydrogen fuel automobiles. When it is detected that the vehicle is in the high-voltage state, the first insulation resistance value after the high-voltage power battery system is started is obtained, and the starting duration of the vehicle is recorded; performing insulation fault diagnosis on the high-voltage power battery system according to the first insulation resistance value; if the high-voltage power battery system does not have the insulation fault, detecting whether the hydrogen fuel battery system is started or not when the starting duration reaches a preset duration; if yes, obtaining a second insulation resistance value after the hydrogen fuel cell system and the high-voltage power cell system are started at the same time; according to the second insulation resistance value, insulation fault diagnosis is carried out on the hydrogen fuel cell system and the high-voltage power cell system, integral insulation fault diagnosis can be carried out on the high-voltage power cell and the hydrogen fuel cell, and meanwhile, efficient and rapid insulation fault diagnosis is carried out on the hydrogen fuel cell in an external mode.

    本发明公开了一种车辆绝缘故障诊断方法、装置、设备及存储介质,属于氢燃料汽车技术领域。本发明通过在检测到车辆处于上高压状态时,获取高压动力电池系统启动后的第一绝缘阻值,并记录车辆的启动时长;根据第一绝缘阻值对高压动力电池系统进行绝缘故障诊断;若高压动力电池系统不存在绝缘故障,则在启动时长达到预设时长时,检测氢燃料电池系统是否启动;若启动,则获取氢燃料电池系统和高压动力电池系统同时启动后的第二绝缘阻值;根据第二绝缘阻值对氢燃料电池系统和高压动力电池系统进行绝缘故障诊断,能够对高压动力电池以及氢燃料电池进行整体性的绝缘故障诊断,同时通过外部的方式对氢燃料电池进行高效快速的绝缘故障诊断。


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    Title :

    Vehicle insulation fault diagnosis method, device and equipment and storage medium


    Additional title:

    车辆绝缘故障诊断方法、装置、设备及存储介质


    Contributors:
    WANG ZHIYING (author) / LU PING (author) / HUANG CHUNSHOU (author) / ZENG LULIN (author)

    Publication date :

    2023-07-28


    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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