The invention discloses a battery high-voltage loop monitoring device and method, a battery, a power system and an automobile. A first switching device, a second switching device, a third switching device, an isolated converter, a grounding resistor and a monitoring module are connected in the battery high-voltage loop. By controlling the on-off of the first switching device, the second switching device and the third switching device, electric signals including insulation resistance information and grounding resistance information are collected, and the peak value and waveform of voltage signals are analyzed, and whether the main positive relay and/or the main negative relay has an adhesion fault and/or an insulation fault is judged according to the change of the peak value and/or the waveform period of the voltage signal. Monitoring of the insulation resistance and monitoring of the main positive relay and the main negative relay are integrated into the same monitoring device, the purpose of high integration of the monitoring device is achieved, monitoring of the insulation resistance and monitoring of the relays are achieved at the same time through the same monitoring device, hardware cost is saved, and monitoring efficiency is improved.
本发明公开了一种电池高压回路的监测装置、方法、电池、动力系统及汽车,在电池高压回路中接入第一开关器件、第二开关器件、第三开关器件、隔离型变换器、接地电阻和监测模块。通过控制第一开关器件、第二开关器件、第三开关器件的通断,来采集包含绝缘电阻信息和包含接地电阻信息的电信号,通过对电压信号的峰值和波形进行分析,以电压信号的峰值和/或波形周期的变化判断主正继电器和/或主负继电器是否出现粘连故障和是否出现绝缘故障。将绝缘电阻的监测和主正继电器与主负继电器的监测集成于同一个监测装置,达到了监测装置高度集成的目的,且通过同一个监测装置同时实现绝缘电阻的监测和对继电器的监测,节省了硬件成本和提高了监测效率。
Battery high-voltage loop monitoring device and method, battery, power system and automobile
电池高压回路的监测装置、方法、电池、动力系统及汽车
2021-10-08
Patent
Elektronische Ressource
Chinesisch
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