锂离子动力电池系统热失控检测方法和技术综述

Review of Thermal Runaway Detection Methods and Technologies for Lithium-ion Power Battery System

为提高锂离子动力电池热失控检测效率,避免由电池热失控引发的安全事故,本文对比和总结了利用电压、温度、气压、烟雾、特征气体和挥发性有机化合物等进行热失控检测的方法,分析了各类传感器的检测原理和性能差异,并介绍了声学、膨胀力等前沿检测方法。为减少或避免工程应用领域热失控误报和漏报的发生,将各类热失控信号进行组合和交叉校验,并对信号组合方式及其优缺点进行了归纳总结。

In order to improve the detection efficiency of thermal runaway of lithium-ion power battery and avoid safety accidents,this paper compares and summarizes the methods of using voltage,temperature,air pressure,smoke,gas and volatile organic compounds(VOC) to detect thermal runaway,analyzes the detection principles and performance differences of various sensors,and introduces frontier and advanced detection methods such as acoustics and expansion force.In order to reduce or avoid the occurrence of false alarms and missing alarms of thermal runaway in engineering applications,various kinds of thermal runaway signals are combined and cross-checked,and the signal combination modes and their advantages and disadvantages are summarized.