动力锂电池热失控热特性与产气研究  

Thermal Runaway Characteristics and Gas Production of Power Lithium Batteries

作　　者：钱峰 李明海[2] 王贺武[3] 王娟[2] QIAN Feng;LI Minghai;WANG Hewu;WANG Juan(School of Mechanical Engineering,Dalian Jiaotong University,Dalian 116028,China;Zhan Tianyou College(CRRC College),Dalian Jiaotong University,Dalian 116028,China;School of Vehicle and Mobility,Tsinghua University,Bejing 100084,China)

机构地区：[1]大连交通大学机械工程学院,辽宁大连116028 [2]大连交通大学詹天佑学院(中车学院),辽宁大连116028 [3]清华大学车辆与运载学院,北京100084

出　　处：《大连交通大学学报》2025年第2期88-93,共6页Journal of Dalian Jiaotong University

基　　金：吉林省自然科学基金项目(YDZJ202201ZYTS402)。

摘　　要：以储能电站技术中使用的磷酸铁锂电池为研究对象,采用密封压力容器,以外加热的触发方式进行锂电池热失控试验,并在惰性环境下对原位锂电池喷发展开研究。通过气相色谱分析喷发产气成分,利用理查德里公式计算混合气体可燃极限,总结磷酸铁锂电池热失控温度特性,确定喷发产气主要成分为CO、H2、CO2、CH4、C,H4。结果表明,研究磷酸铁锂电池热失控及产气特性,配合可燃极限计算,能为热灾害防护提供相应的技术支持,对提升储能电站热安全管理水平具有重要意义。Addressing thermal safety issues caused by the thermal runaway of lithium batteries,the research object of this article is the lithium iron phosphate battery used in electric ship technology.The lithium battery thermal runaway experiment was conducted using a sealed pressure vessel and external heating triggering method,and the in-situ lithium battery eruption was studied in an inert environment.The temperature characteristics of thermal runaway of the lithium iron phosphate batteries were summarized in the study.Gas chromatography was used to analyze the gas produced by the eruption of the lithium iron phosphate batteries,which mainly consists of CO,H_(2),CO_(2),CH_(4),C_(2)H_(4),et al.In addition,the flammability limit of the ejected mixed gas was calculated using the Richardley formula,which provides the theoretical basis and technical support for thermal disaster prevention of the lithium batteries.

关 键 词：锂电池 热失效 产气分析 气体可燃极限 

分 类 号：TM912[电气工程—电力电子与电力传动]