动力锂离子电池热行为研究与风冷散热优化设计  

Thermal behavior study and heat dissipation optimization of lithium ion power battery pack based on air cooling

作　　者：蔡天鏖 沈雪阳 贺春敏 杨翼 CAI Tianao;SHEN Xueyang;HE Chunmin;YANG Yi(College of Electronic and Optical Engineering&College of flexible electronics,Nanjing University of Posts and Telecommunications,Nanjing Jiangsu 210046,China)

机构地区：[1]南京邮电大学电子与光学工程&柔性电子学院,江苏南京210046

出　　处：《电源技术》2023年第2期187-192,共6页Chinese Journal of Power Sources

基　　金：江苏高校自然科学基金-面上项目(20KJB480003)。

摘　　要：发展新能源汽车是我国应对气候变化、缓解石油等不可再生能源枯竭的有效举措。动力锂电池作为新能源汽车的核心技术直接决定了其可靠性,安全性和续航性能。为此,建立了磷酸铁锂动力电池组(方形)的三维仿真模型,对单体电池以及动力电池组的产热行为和风冷散热特性进行仿真模拟,并对电池模块的散热结构进行优化设计。结果表明,在环境温度为20℃,风速为5 m/s,电池组顺排排布,且Y方向和X方向间距分别为32和4 mm时,风冷散热效果最好。The development of new energy vehicles(NEVs)is an effective measure to cope with climate change and to mitigate the exhaustion of non-renewable energy sources such as oil.As the core technology of NEVs,power lithium battery directly decides its reliability and safety.The three-dimensional simulation model of lithium iron phosphate power electric battery pack(square)was established,and then the heat generation behavior and air cooling characteristics of single square battery and power battery pack were simulated.The results show that under the condition of maximizing the battery capacity,when the battery pack is arranged in an orderly manner and the spacing in Y direction is 32 mm and the spacing in X direction is 4 mm,together with an temperature of 20℃and wind speed of 5 m/s,the power battery pack has the best air cooling heat dissipation effect under working conditions.

关 键 词：锂离子电池 新能源汽车 风冷 散热优化 

分 类 号：TM912[电气工程—电力电子与电力传动]