The embodiment of the invention discloses an insulation monitoring device, a control method of the insulation monitoring device and an electric vehicle. The insulation monitoring device comprises a power battery power supply circuit, and the power battery power supply circuit comprises a main positive direct current bus and a main negative direct current bus. And the insulation resistance detection module is connected between the main positive direct current bus and the main negative direct current bus. And the capacitance detection module is connected between the main positive direct-current bus and the main negative direct-current bus and is used for detecting a main positive capacitance value and a main negative capacitance value. And the controller is used for adjusting the insulation resistance value to obtain the frequency. According to the embodiment of the invention, after the capacitance value at the two ends of the insulation resistor is determined through the capacitance detection module, the controller calculates the charging time required by the capacitor according to the capacitance value, and then the frequency of the insulation resistance value obtained by the insulation resistance detection module is determined in a targeted manner. The accuracy of the obtained insulation resistance value is ensured, and the false alarm rate is reduced.

    本发明实施例公开了一种绝缘监测装置、绝缘监测装置的控制方法和电动汽车。绝缘监测装置包括:动力电池供电电路,动力电池供电电路包括主正直流母线和主负直流母线。接地总线及绝缘电阻检测模块,绝缘电阻检测模块连接于主正直流母线和主负直流母线之间。电容检测模块,电容检测模块连接于主正直流母线和主负直流母线之间,用于检测主正电容值和主负电容值。控制器,用于调整绝缘电阻值获取频率。本发明实施例通过电容检测模块确定绝缘电阻两端的电容值后,控制器根据电容值的大小推算电容所需充电时间,进而有针对性的确定绝缘电阻检测模块获取绝缘电阻值的频率。保证了获取到的绝缘电阻值精度,降低了误报率。


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    Titel :

    Insulation monitoring device, control method of insulation monitoring device and electric vehicle


    Weitere Titelangaben:

    一种绝缘监测装置、绝缘监测装置的控制方法和电动汽车


    Beteiligte:
    ZHANG YUPENG (Autor:in) / SONG FANG (Autor:in) / ZHANG CHUNCAI (Autor:in) / ZHANG SHANGMING (Autor:in) / LU JUN (Autor:in) / ZHANG XING (Autor:in) / ZHAO DONGFENG (Autor:in) / WANG YING (Autor:in) / ZHANG XIANBO (Autor:in)

    Erscheinungsdatum :

    2023-05-26


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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