The invention discloses a high-voltage battery insulation monitoring system of an electric automobile, the high-voltage battery insulation monitoring system is arranged in a battery management system of the electric automobile, the high-voltage battery insulation monitoring system comprises a power supply circuit, a single-chip microcomputer circuit, a communication circuit and a voltage acquisition circuit, the power supply circuit is connected with the single-chip microcomputer circuit, the communication circuit and the voltage acquisition circuit, and the single-chip microcomputer circuit is connected with the communication 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 and a contactor which are connected in parallel with a power battery pack, and 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, collected by the voltage collection circuit, of the insulation resistor and transmits the resistance value to the main module through the communication circuit, and the main module conducts monitoring according to the resistance value of the insulation resistor of the power battery. When the resistance value of the insulation resistor of the power battery is smaller than a set threshold value, an alarm is given. According to the invention, battery insulation resistance and voltage monitoring can be realized, and the working efficiency is improved.
本发明公开了一种电动汽车的高压电池绝缘监测系统,该高压电池绝缘监测系统设置于电动汽车的电池管理系统中,包括电源电路、单片机电路、通信电路和电压采集电路,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,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。
High-voltage battery insulation monitoring system of electric automobile
一种电动汽车的高压电池绝缘监测系统
2024-08-02
Patent
Electronic Resource
Chinese
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