The invention discloses an insulation detection circuit, a battery management system and a vehicle, the circuit comprises a first bridge arm unit, a second bridge arm unit, a switch unit, a first voltage detection unit, a second voltage detection unit and a control unit, one end of the second bridge arm unit is connected with the other end of the first bridge arm unit, and the second bridge arm unit is provided with a first node; the other end of the to-be-tested total positive insulation resistor is connected with one end of the to-be-tested total negative insulation resistor and is provided with a second node; the control unit is used for controlling the on-off of the first bridge arm unit, the second bridge arm unit and the switch unit, and determining the resistance values of the to-be-measured total positive insulation resistance and the to-be-measured total negative insulation resistance according to the voltage values of the first node and the second node when the switch unit is switched on and at least one of the first bridge arm unit and the second bridge arm unit is switched on. According to the circuit, node voltages in different test states are obtained by controlling the conduction of the bridge arm units, so that the resistance value of the insulation resistor is determined, and the insulation detection function of the circuit is realized.

    本发明公开了一种绝缘检测电路、电池管理系统及车辆,其中,所述电路包括:第一桥臂单元、第二桥臂单元、开关单元、第一电压检测单元、第二电压检测单元和控制单元,第二桥臂单元的一端与第一桥臂单元的另一端相连,且具有第一节点;待测总正绝缘电阻的另一端和待测总负绝缘电阻的一端相连,且具有第二节点;控制单元用于控制第一桥臂单元、第二桥臂单元和开关单元的通断,并根据开关单元导通且第一桥臂单元和第二桥臂单元中至少一个导通时,第一节点和第二节点的电压值确定待测总正绝缘电阻和待测总负绝缘电阻的阻值。该电路通过控制桥臂单元的导通,来获取不同测试状态下的节点电压,从而确定绝缘电阻的阻值,实现了电路的绝缘检测功能。


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Insulation detection circuit, battery management system and vehicle


    Weitere Titelangaben:

    绝缘检测电路、电池管理系统及车辆


    Beteiligte:
    DENG LEI (Autor:in) / GUO HONGJIANG (Autor:in) / XIE ZHEFENG (Autor:in)

    Erscheinungsdatum :

    2022-11-29


    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




    Insulation detection circuit, detection method and battery management system

    DU BAOHAI / WU GUOXIU / LI WEIQIANG et al. | Europäisches Patentamt | 2021

    Freier Zugriff

    DETECTION METHOD FOR INSULATION TESTING CIRCUIT, AND BATTERY MANAGEMENT SYSTEM

    LI MENG / LIU CHANGJIAN / YE FUMING et al. | Europäisches Patentamt | 2023

    Freier Zugriff

    Battery pack insulation detection circuit and method and vehicle

    LI DAHE | Europäisches Patentamt | 2022

    Freier Zugriff

    Vehicle and insulation monitoring circuit for vehicle battery

    LU KEWEI / LI JI / CHEN WENDI et al. | Europäisches Patentamt | 2022

    Freier Zugriff