The invention provides a thermal runaway alarm circuit for a power energy storage battery. The thermal runaway alarm circuit comprises a thermal signal acquisition circuit, a reference voltage circuit and a comparison circuit. The thermal signal acquisition circuit is arranged at a temperature acquisition point in the power energy storage battery and generates an acquisition voltage signal according to the temperature of the temperature acquisition point; the reference voltage circuit is used for generating a reference voltage signal; the comparison circuit is electrically connected with the thermal signal acquisition circuit and the reference voltage circuit, and outputs an alarm signal according to the acquisition voltage signal and the reference voltage signal. Wherein the thermal signal acquisition circuit comprises a plurality of PTC (Positive Temperature Coefficient) thermistors, and the plurality of PTC thermistors are mutually connected in series and are respectively arranged at each temperature acquisition point in the power energy storage battery. According to the invention, the thermal runaway alarm of the power energy storage battery is realized, the alarm opportunity of the thermal runaway of the power energy storage battery can be advanced to the first stage, more disaster relief time is reserved before a disaster occurs, and the harm to human bodies and finance is reduced. The invention further discloses a corresponding power energy storage battery and an intelligent vehicle.
本发明提供了一种用于动力储能电池的热失控报警电路,包括:热信号采集电路、参考电压电路和比较电路。热信号采集电路设置于动力储能电池中的温度采集点,并根据温度采集点的温度生成采集电压信号;参考电压电路用于生成参考电压信号;比较电路电连接于热信号采集电路和参考电压电路,并根据采集电压信号和参考电压信号输出报警信号。其中,热信号采集电路中包括多个PTC热敏电阻,多个PTC热敏电阻相互串联并分别布置于动力储能电池中的各个温度采集点。本发明实现了对动力储能电池热失控的报警,可将动力储能电池热失控的报警时机提前至第一阶段,在灾害发生前预留更多的救灾时间,降低对人身及财务的危害。还公开了对应的动力储能电池和智能车辆。
Thermal runaway alarm circuit for power energy storage battery, battery and intelligent vehicle
用于动力储能电池的热失控报警电路、电池及智能车辆
2024-03-12
Patent
Electronic Resource
Chinese
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