The invention discloses an insulation detection circuit and method, a battery management system and a vehicle, and the circuit comprises a power supply unit which is suitable for providing a first power supply and a second power supply, and the power supply voltages of the first power supply and the second power supply are different; the switching unit is suitable for switching the power supply unit connected to the positive electrode end of the load or the negative electrode end of the load; the voltage detection unit is configured to detect the voltage between the first power supply and the grounding end and detect the voltage between the second power supply and the grounding end; wherein the voltage detected by the voltage detection unit is used for determining the insulation resistance. Therefore, no matter whether the power supply unit is connected to the positive electrode end or the negative electrode end of the load, the insulation resistance of the grounding end can be detected.

    一种绝缘检测电路及方法、电池管理系统、车辆,所述电路包括:电源单元,适于提供第一电源和第二电源,其中,第一电源与第二电源的供电电压不同;切换单元,适于对电源单元接入到负载的正极端或负载的负极端进行切换;电压检测单元,被配置为对第一电源与接地端之间的电压进行检测,并对第二电源与接地端之间的电压进行检测;其中,电压检测单元检测的电压用于确定绝缘电阻。由此,无论电源单元接入到负载的正极端还是负载的负极端,均能实现对接地端的绝缘电阻的检测。


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    Title :

    Insulation detection circuit and method, battery management system and vehicle


    Additional title:

    绝缘检测电路及方法、电池管理系统、车辆


    Contributors:
    WANG PENG (author) / YIN LIANJIE (author) / WANG CHENGZHI (author)

    Publication date :

    2024-06-21


    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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