软包装电池成组热结构设计  

Thermal Structure Design for Flexible Package Battery

作　　者：王丽娜[1] 刘皓[1] 杨凯[1] 惠东[1] 张慧卿[2] 

机构地区：[1]中国电力科学研究院,北京100192 [2]北京化工大学,北京100029

出　　处：《化学工业与工程》2014年第3期39-43,共5页Chemical Industry and Engineering

基　　金：国家863计划项目(2014AA052301)

摘　　要：由于软包装电池外包装采用多层塑料复合薄膜,没有外部形状支撑,在高倍率使用条件下,电池会产生大量热量,同时由于副反应不可避免产生气体,出现体积涨缩及其他形变,导致性能和循环寿命下降。针对软包装电池特点,设计散热片,实现对电池散热及固定加紧的双重作用,成组热设计采用散热片与空气冷却相结合的形式。根据计算流体动力学原理,对电池箱进行模拟仿真计算,结果显示电池组最高温升为5℃,温度场最大温差2℃。As external package of a lithium ion battery is made of multi-layer composite film, solid sup- port is not available for the flexible package battery. During a high-rate charge/discharge cycle, the bat- teries will generate a lot of heat and gas inevitably produced by the side-reactions, which leads to the ex- pansion and deformation of the batteries. In this paper, heat sink was designed to cool and fasten the bat- tery. The design of the thermal structure is a combination of heat sink and air cooling. A numerical simu- lation of battery module based on CFD theory is conducted. The result shows that the maximum tempera- ture rise of the battery pack is 5 ℃ and the maximum temperature difference in the pack is 2 ℃.

关 键 词：软包装电池 散热片 成组 热设计 

分 类 号：TQ152[化学工程—电化学工业]