动力锂电池组射流强化散热方法研究  

Method of jet flow enhanced heat dissipation for lithium-ion power batteries

作　　者：李志强[1] 范晓伟[1] 刘璐 LI Zhi-qiang;FAN Xiao-wei;LIU Lu(School of Energy and Environment,Zhongyuan University of Technology,Zhengzhou Henan 450007,China)

机构地区：[1]中原工学院能源与环境学院,河南郑州450007

出　　处：《电源技术》2018年第11期1625-1628,共4页Chinese Journal of Power Sources

基　　金：河南省科技攻关计划项目(162102210094);河南省高等学校供热空调重点学科开放实验室研究基金资助课题(2016HAC204)

摘　　要：高温环境与过度的局部温升是动力锂离子电池循环寿命减少的重要原因,特别是电池模块中的电池组紧密堆积,因此动力锂离子电池的热管理至关重要。提出一种用于大功率动力锂电池组的射流强化散热方案,利用通风管路实现电池组体空间同步冷却,强化局部冷却空气与电芯表面换热效果,有效提高通风冷却温度控制能力和改善电池系统温度均匀性。采用CFD方法,求解不同送风参数下电池组系统的温度场,分析强化散热系统对电池阵列内部终温与温差的影响。研究结果表明,动力锂电池组射流强化散热是一种有效的冷却方法。The high temperature environment and excessive local temperature rise are important reasons to reduce the cycle life of lithium-ion battery, especially the closely packed battery module, so the thermal management of power lithium-ion battery is very important. The jet flow enhanced heat dissipation scheme for power lithium battery pack was studied, which could effectively improve the temperature control of the ventilation cooling and improve the temperature uniformity of the battery system. The CFD method was adopted to solve the temperature field of the battery pack system with different air supply parameters, the influence of enhanced heat dissipation system on final temperature and temperature difference of the cell array was analyzed. The results show that the jet flow enhanced heat dissipation is an effective cooling method.

关 键 词：锂离子电池组 风冷 CFD 强化散热 

分 类 号：TM912.9[电气工程—电力电子与电力传动]