蜂巢式锂离子电池模组热失控扩散的抑制  

Thermal runaway propagation suppression of honeycomb Li-ion battery module

作　　者：雍加望[1] 朱福临 冯能莲[2] YONG Jia-wang;ZHU Fu-lin;FENG Neng-lian(Department of Transportation Engineering,Beijing University of Technology,Beijing 100124,China;Faculty of Environment and Life,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学交通工程系,北京100124 [2]北京工业大学环境与生命学部,北京100124

出　　处：《电池》2023年第2期155-159,共5页Battery Bimonthly

基　　金：国家自然科学基金青年项目(52002009),北京市自然科学基金面上项目(3222003),汽车安全与节能国家重点实验室开放基金课题(KF2010)。

摘　　要：锂离子电池热失控问题逐渐受到重视。基于锂离子电池的热失控副反应机理方程和热传导机理方程,搭建由7只容量为4.5 Ah的21700型锂离子电池组成的蜂巢式电池模组,研究电池在加热条件下的热失控扩散情况。仿真结果与实验结果误差在7%以内。利用蜂巢式电池模组研究冷却液温度、流速对电池热失控扩散行为的影响。当模组中的单体电池发生热失控时,冷却液的温度越高,模组发生热失控扩散的时间越早;冷却液的温度越低,抑制电池模组热失控传播所需的冷却液流速越小。The issues of thermal runaway of Li-ion battery had attracted more and more attention.Based on the thermal runaway side reaction mechanism equation and heat conduction mechanism equation of Li-ion battery,a honeycomb battery module consisting of seven 21700 type Li-ion batteries with a capacity of 4.5 Ah was built to research the thermal runaway diffusion of the battery under heating conditions.The error between simulation results and test results was within 7%.The influence of coolant temperature and flow rate on the thermal runaway diffusion behavior of battery was studied by using honeycomb battery module.When the single cell in the module was out of control,the higher the temperature of the coolant was,the earlier the thermal runaway diffusion occurred in the module.The lower the temperature of the coolant,the smaller the coolant flow rate required to inhibit the runaway heat transmission of the battery module.

关 键 词：锂离子电池 数值模拟 热失控 热扩散 蜂巢式液冷模组 

分 类 号：TM912.9[电气工程—电力电子与电力传动]