The invention relates to a high-voltage battery insulation monitoring system of an electric automobile. In the system, a power supply circuit is connected with a single-chip microcomputer circuit, a communication circuit and a voltage acquisition circuit; the single-chip microcomputer circuit is connected with the communication circuit and the voltage acquisition circuit. The voltage acquisition circuit is connected with an insulation resistor connected in parallel with the power battery pack and a contactor; the communication circuit is connected with a main module of a battery management system; the single chip microcomputer circuit determines the resistance value of the insulation resistor of the power battery according to the voltage data of the insulation resistor acquired by the voltage acquisition circuit, and transmits the determined resistance value to the main module through the communication circuit; and the main module carries out monitoring according to the resistance value of the insulation resistor of the power battery, and gives an alarm when the resistance value of the insulation resistor of the power battery is smaller than a set threshold value. According to the invention, battery insulation resistance and voltage monitoring can be realized, and the working efficiency is improved.

    本发明涉及一种电动汽车的高压电池绝缘监测系统。该系统中电源电路与单片机电路、通信电路和电压采集电路连接;单片机电路与通信电路和电压采集电路连接;电压采集电路与动力电池组并联的绝缘电阻以及接触器连接;通信电路与电池管理系统的主模块连接;单片机电路根据电压采集电路采集到的绝缘电阻的电压数据确定动力电池的绝缘电阻的阻值,并将确定阻值通过通信电路传输至主模块;主模块根据动力电池的绝缘电阻的阻值进行监测,并当动力电池的绝缘电阻的阻值小于设定阈值时,进行报警。本发明能够实现电池绝缘电阻以及电压的监测,提高工作效率。


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    Title :

    High-voltage battery insulation monitoring system of electric automobile


    Additional title:

    一种电动汽车的高压电池绝缘监测系统


    Contributors:
    NAN JINRUI (author) / CAO WANKE (author) / LIU ZONGSHUO (author) / JIANG XINLU (author) / DENG BO (author) / YE XUCHENG (author)

    Publication date :

    2021-12-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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