The invention provides a vehicle insulation fault diagnosis method and system, terminal equipment and a storage medium, and the method comprises the steps: obtaining the initial insulation resistance values of two electrodes when judging that a power battery loop is in a first state; when it is judged that the initial insulation values of the two electrodes are both smaller than a first preset threshold value and the initial insulation value of at least one electrode is larger than or equal to a second preset threshold value, high voltage on the vehicle is allowed; when it is judged that the power battery loop is in the second state, first insulation resistance values of the two electrodes are obtained; when it is judged that the first insulation values of the two electrodes are both smaller than a first preset threshold value and the first insulation value of at least one electrode is larger than or equal to a second preset threshold value, the vehicle is allowed to continue to run; according to the scheme, the insulation resistance values of the double electrodes in different modes are detected in a targeted mode, whether the insulation risk reaches the degree affecting normal operation of the current mode or not is judged, the current vehicle using requirement of a user is protected to the maximum degree, and the vehicle function using redundancy and the vehicle using experience feeling of the user are improved.

    本申请提供一种车辆绝缘故障诊断方法、系统、终端设备及存储介质,该方法通过判断动力电池回路处于第一状态时,获取两个电极的初始绝缘阻值,判断两个电极的初始绝缘值均小于第一预设阈值且至少一个电极的初始绝缘值大于或等于第二预设阈值时,允许车辆上高压;判断动力电池回路处于第二状态时,获取两个电极的第一绝缘阻值;判断两个电极的第一绝缘值均小于第一预设阈值且至少一个电极的第一绝缘值大于或等于第二预设阈值时,允许车辆继续行驶模式,该方案通过针对性检测双电极在不同模式下的绝缘阻值并判断绝缘风险是否达到影响当前模式正常运行的程度来最大化保护用户当前的用车需求,提升用户对车辆功能使用的冗余性及用车体验感。


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    Title :

    Vehicle insulation fault diagnosis method and system, terminal equipment and storage medium


    Additional title:

    一种车辆绝缘故障诊断方法、系统、终端设备及存储介质


    Contributors:
    WU WENKE (author) / HUANG XIAOQING (author) / DING TIANXI (author) / YANG JUN (author)

    Publication date :

    2023-10-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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