The invention relates to a battery pack insulation detection circuit and method and a vehicle. The circuit comprises a battery pack, a first detection branch, a second detection branch, a first voltage detection device, a second voltage detection device and a processing device, the first voltage detection device and the second voltage detection device are used for detecting first voltage and second voltage between the positive electrode end and the grounding end of the battery pack and between the negative electrode end and the grounding end of the battery pack when one of the first detection branch circuit and the second detection branch circuit is in an on state and the other one is in an off state, and detecting the first voltage and the second voltage between the positive electrode end and the grounding end of the battery pack when both are in the on state. Respectively detecting a third voltage and a fourth voltage between the positive end and the negative end of the battery pack and the grounding end; and the processing device is used for determining the external insulation state of the battery pack according to the first voltage, the second voltage, the third voltage and the fourth voltage. Therefore, the insulation state of the power battery pack can be accurately determined, the driving safety is improved, and the circuit is simple, practical and easy to implement.

    本公开涉及一种电池包绝缘检测电路、方法和车辆。该电路包括电池包,还包括:第一检测支路、第二检测支路、第一电压检测装置、第二电压检测装置和处理装置;第一电压检测装置、第二电压检测装置用于在第一检测支路和第二检测支路中的一者处于导通状态,另一者处于断开状态时,分别检测电池包的正极端、负极端与接地端之间的第一电压、第二电压,以及在两者均处于导通状态时,分别检测电池包的正极端、负极端与接地端之间的第三电压、第四电压;处理装置,用于根据第一电压、第二电压、第三电压和第四电压,确定电池包的外部绝缘状态。如此,能够准确地确定出动力电池包的绝缘状态,不仅提高了行车安全性,而且电路简单实用,易于实现。


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    Titel :

    Battery pack insulation detection circuit and method and vehicle


    Weitere Titelangaben:

    电池包绝缘检测电路、方法和车辆


    Beteiligte:
    LI DAHE (Autor:in)

    Erscheinungsdatum :

    2022-03-29


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY




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