相变材料热管理下电池热失控传播过程数值分析  

Numerical Study of Battery Thermal Runaway Propagation Using PCM for Thermal Management

作　　者：邹时波 李顶根[2] 李卫 田瑞华[2] ZOU Shi-Bo;LI Ding-Gen;LI Wei;TIAN Rui-Hua(China-EU Institute for Clean and Renewable Energy, Huazhong University of Science and Technology, Wuhan 430074, China;School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China)

机构地区：[1]华中科技大学中欧清洁与可再生能源学院,武汉430074 [2]华中科技大学能源与动力工程学院,武汉430074

出　　处：《工程热物理学报》2019年第5期1105-1111,共7页Journal of Engineering Thermophysics

基　　金：国家科技支撑计划(No.2015BAG17B02)

摘　　要：为明晰相变材料热管理下热失控传播速率与材料属性的关系,采用格子Boltzmann方法对18650锂离子电池模组计算分析热失控在不同的相变材料特性下的传播特性。结果表明:相变材料的潜热变化对热失控的传播影响不明显;模组内电池之间的热失控传播时间随着热导率的增加先减小后增加,在某热导率数值左右存在一个拐点,所得结论为优化动力电池模组热管理提供了参考依据。In order to clarify the relationship between thermal runaway propagation rate and material properties in thermal management of PCM materials. Lattice Boltzmann method was used to calculate the propagation characteristics of thermal runaway under different phase change material characteristics by 18650-lithium ion battery module. The results show that the latent heat change of the phase change material has no obvious effect on the thermal runaway. The thermal runaway time between the modules in the module decreases first and then increases with the increase of the thermal conductivity. The conclusion provides a reference for the optimization of thermal management of power battery module.

关 键 词：锂离子电池 热失控传播 格子BOLTZMANN 相变材料热管理 热导率 

分 类 号：TK124[动力工程及工程热物理—工程热物理]