圆柱形电池组纵向流风冷散热性能仿真  

Heat dissipation performance simulation of longitudinal flow air-cooling for cylindrical battery pack

作　　者：揭琳锋 李伟 熊树生[3] JIE Linfeng;LI Wei;XIONG Shusheng(School of Traffic Engineering,Yangzhou Institute of Technology,Yangzhou,Jiangsu 225000,China;Hangzhou Weisheng Technology Co.,Ltd.,Hangzhou,Zhejiang 310000,China;School of Energy Engineering,Zhejiang University,Hangzhou,Zhejiang 310000,China)

机构地区：[1]扬州工业职业技术学院交通工程学院,江苏扬州225000 [2]杭州伟生科技有限责任公司,浙江杭州310000 [3]浙江大学能源工程学院,浙江杭州310000

出　　处：《电池》2024年第6期805-809,共5页Battery Bimonthly

基　　金：国家重点研发计划(2022YFB2502403);浙江省“尖兵”“领雁”研发攻关计划项目(2022C01G2014256);浙江省清洁能源与碳中和重点实验室开放基金(204022023005A)。

摘　　要：为提高圆柱形电池组的能量密度,提出密排形式的电池组,研究纵向流风冷对该电池组的散热效果。纵向流冷却的电池组的体积相比横向流方式缩小9.62%。在多物理场仿真软件中,将集总参数电池模型和流体传热模型相耦合,开展数值仿真,发现:在4 m/s的风速下,电池温升可控制在15℃以内;在相同的放电倍率(2.0 C)下,环境温度每提高10℃,电池温升约增加1℃;放电倍率每升高1.0 C,最大温升约增加10℃,最大温差约增加4℃。纵向流风冷对圆柱形电池组具有良好的冷却效果,特别是用于对体积和质量有严格要求的应用场景时。In order to improve the energy density of cylindrical battery packs,a compact battery pack is proposed,the heat dissipation effect of longitudinal air-cooling on the battery pack is studied.The volume of the battery pack cooled by longitudinal flow is reduced by 9.62% compared with that by transverse flow.The lumped parameter battery model and the fluid heat transfer model are coupled in the multi-physical field simulation software,the numerical simulation results show that the temperature rise of the battery can be controlled within 15 ℃ with 4 m/s wind speed.With the same discharge rate(2.0 C),the temperature of the battery increases about 1 ℃ with an increase of 10 ℃ of ambient temperature,the maximum temperature increases about 10 ℃ and the maximum temperature difference increases about 4 ℃ with an increase of 1.0 C discharge rate.The longitudinal flow air cooling has a good cooling effect on the cylindrical battery,especially for applications with strict requirements on volume and weight.

关 键 词：锂离子电池 热管理 模拟仿真 电池组 圆柱形电池 纵向流 风冷 

分 类 号：TM912.9[电气工程—电力电子与电力传动]