摘要
通过已有ARC测试的电池单体热失控温度曲线计算得到电芯的生热功率,再将该热功率定义为混合动力机车动力电池系统内指定热失控单体的热功率,仿真计算其周围单体的瞬态温度。计算表明:空调风冷时单颗电芯热失控不会引发热失控扩展;没有空调风冷时某一颗电芯热失控会在模组内扩展,一并电芯同时热失控将导致上层电池包热失控。最后对热失控扩展阻断设计方法进行了探讨。
The thermal power of a thermal runaway cell is calculated using its temperature obtained by existing ARC tests.The power is assigned to cells in a hybrid locomotive traction battery system,and the transient temperature of other cells around it is simulated.The simulation shows that one cell's thermal runaway cannot incur propagation when it is cooled by an air-conditioner.However,it will lead to propagation without an air-conditioner in modules,and the parallel cells'thermal runaway will cause propagation in the upper package.Lastly,preventing thermal runaway propagation was studied.
作者
张志鸿
牟俊彦
孟玉发
ZHANG Zhihong;MOU Junyan;MENG Yufa(CRRC Ziyang Co.Ltd.,Ziyang 641300,Sichuan,China)
出处
《储能科学与技术》
CAS
CSCD
北大核心
2021年第2期658-663,共6页
Energy Storage Science and Technology
基金
中国中车科技研究开发项目(2020CJB117)。
关键词
混合动力机车
锂离子动力电池系统
热功率
热失控扩展
hybrid locomotive
lithium-ion traction battery system
thermal power
thermal runaway propagation
