The invention provides an insulation detection method and an insulation detection system, and the method comprises the steps: controlling a bridge measurement circuit to carry out two times of balance calibration when a complete insulation detection mode starting signal of a vehicle is detected, and obtaining measurement data; obtaining a first resistance value of a standard adjustable resistor in the bridge measurement circuit based on the initial balance state of the bridge measurement circuit, and calculating a first insulation resistance ratio; acquiring a second resistance value of the standard adjustable resistor based on a secondary balance state of the bridge measurement circuit, and calculating a second insulation resistance ratio; calculating an insulation resistance value corresponding to each insulation resistor by combining the first insulation resistance ratio and the second insulation resistance ratio; and judging whether the insulation resistance value accords with a preset safety threshold, and if not, generating alarm information. In the mode, through a two-time bridge balance calibration method and in combination with a vehicle state self-adaptive detection mode, the insulation detection mode can be dynamically adjusted under different working conditions, and the power consumption is reduced while the measurement precision is ensured.

    本申请提供了一种绝缘检测方法和绝缘检测系统,包括:当检测到车辆的完整绝缘检测模式启动信号时,控制电桥测量电路进行两次平衡校准,并获取测量数据;基于电桥测量电路的初始平衡状态,获取电桥测量电路中标准可调电阻的第一电阻值,并计算第一绝缘电阻比值;基于电桥测量电路的二次平衡状态,获取标准可调电阻的第二电阻值,并计算第二绝缘电阻比值;通过联立第一绝缘电阻比值和第二绝缘电阻比值,计算每个绝缘电阻对应的绝缘电阻值;判断绝缘电阻值是否符合预设安全阈值,如果不符合,生成告警信息。该方式中,通过两次电桥平衡校准方法,结合车辆状态自适应检测模式,可以在不同工况下动态调整绝缘检测方式,确保测量精度的同时降低功耗。


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    Title :

    Insulation detection method and insulation detection system


    Additional title:

    绝缘检测方法和绝缘检测系统


    Contributors:
    GONG GUANGQIANG (author) / YU CHUANYI (author) / LIANG FENG (author) / QIU KUN (author) / SUN JIAN (author)

    Publication date :

    2025-04-11


    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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