The invention provides an insulation detection circuit and method and an automobile. The insulation detection circuit comprises a sampling module, a detection module, a first voltage division module, a second voltage division module, a third voltage division module and a fourth voltage division module. A first voltage-dividing module, a second voltage-dividing module, a third voltage-dividing module and a fourth voltage-dividing module are respectively arranged between the positive electrode of the battery end and the ground, between the negative electrode of the battery end and the ground, between the positive electrode of the load end and the negative electrode of the battery end, and between the negative electrode of the load end and the negative electrode of the battery end. The sampling module is connected with the first voltage dividing module, the second voltage dividing module, the third voltage dividing module and the fourth voltage dividing module, and is used for collecting voltage of a first sampling point position in different states; and the detection module is connected with the sampling module and is used for carrying out insulation detection on the battery end and/or the load end according to the voltage acquired by the sampling module. According to the scheme, when the load end is not connected with the battery end, insulation detection of the load end can still be achieved, and the accuracy of insulation detection is improved.

    本申请提供一种绝缘检测电路、方法以及汽车,包括:采样模块、检测模块、第一分压模块、第二分压模块、第三分压模块、第四分压模块;在电池端的正极与接地之间、电池端的负极与接地之间、负载端的正极与电池端的负极之间以及负载端的负极与电池端的负极之间,分别设置第一分压模块、第二分压模块、第三分压模块和第四分压模块。采样模块与第一分压模块、第二分压模块、第三分压模块以及第四分压模块连接,用于采集不同状态下第一采样点位置的电压;检测模块与采样模块连接,用于根据采样模块采集到的电压,对电池端和/或负载端进行绝缘检测。本申请的方案,在负载端与电池端未连接时,仍能够实现负载端的绝缘检测,提高了绝缘检测的准确性。


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    Title :

    Insulation detection circuit and method and automobile


    Additional title:

    绝缘检测电路、方法以及汽车


    Contributors:
    LIU GANG (author) / CHEN DETING (author) / LYU YANG (author) / NIU YAQI (author)

    Publication date :

    2023-12-01


    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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