相变材料耦合微通道液冷的锂电池热管理研究  

Study on thermal management of lithium battery with phase change material coupled microchannel liquid cooling

作　　者：曹胡泉 彭航 余浩 黄德军[1,2] 曾东建 CAO Huquan;PENG Hang;YU Hao;HUANG Dejun;ZENG Dongjian(China Automotive Engineering Research Institute,Chongqing 401122,China;Chongqing Key Laboratory of Green and Low-Carbon Assessment and Control for Mobile Source,Chongqing 401122,China;Ministry of Education key Laboratory of Fluid and Power Machinery,Xihua University,Chengdu Sichuan 610039,China)

机构地区：[1]中国汽车工程研究院股份有限公司,重庆401122 [2]移动源绿色低碳测评与控制重庆市重点实验室,重庆401122 [3]西华大学流体及动力机械教育部重点实验室,四川成都610039

出　　处：《电源技术》2024年第10期2040-2045,共6页Chinese Journal of Power Sources

基　　金：国家重点研发计划(2022YFE0100100)。

摘　　要：针对圆柱形锂离子电池组恶劣工况下的散热问题,设计了一种复合相变材料(PCM)耦合液冷冷却的电池组热管理系统。试验得出PCM中最佳碳化硅(SIC)质量分数为5%。设计了一种PCM耦合波浪形微通道液冷的电池热管理系统。在40℃环境温度、2 C放电倍率下,所设计的热管理系统的电池最高温度为49.88℃,最大模块温差为5.14℃,最大单体温差4.34℃。设计的PCM耦合液冷冷却方式相较于自然对流和PCM单一冷却方式,电池组最高温度分别下降了26.95和3.55℃。结果表明:所设计的PCM耦合液冷的电池热管理系统可以保证电池组在恶劣工况下正常工作。Aiming at the heat dissipation problem of cylindrical lithium-ion battery pack under harsh working conditions,a thermal management system of battery pack with composite phase change material(PCM)coupling liquid cooling was designed.The optimum mass fraction of silicon carbide(SIC)in PCMis 5%.A PCMcoupled wavy microchannel liquid cooling battery thermal management system was designed.The designed thermal management system can control the maximum temperature of the battery to be 49.88℃at 40℃ambient temperature and 2 C discharge rate.The maximum module temperature difference is 5.14℃,and the maximum monomer temperature difference is 4.34℃.Compared with the natural convection and PCMsingle cooling method,the maximum temperature of the battery pack with the designed thermal management system decreases by 26.95 and 3.55℃,respectively.The results show that the designed PCM coupled liquid cooling battery thermal management system can ensure the normal operation of the battery pack under harsh conditions.

关 键 词：锂离子电池 复合相变材料 热管理 液冷冷却 

分 类 号：TM912.9[电气工程—电力电子与电力传动]