相变材料强化传热的动力电池散热性能研究  

Research on heat dissipation performance of power battery with enhanced heat transfer by phase change material

作　　者：陈志峰 陈江英 李翔晟[1] 欧阳立芳 王雨妍 CHEN Zhifeng;CHEN Jiangying;LI Xiangsheng;OUYANG Lifang;WANG Yuyan(School of Mechanical and Electrical Engineering,Central South University of Forestry and Technology,Changsha Hunan 410004,China;Automotive Engineering Research Institute,Zotye Holding Group,Hangzhou Zhejiang 310018,China)

机构地区：[1]中南林业科技大学机电工程学院,湖南长沙410004 [2]众泰控股集团汽车工程研究院,浙江杭州310018

出　　处：《电源技术》2021年第10期1283-1286,共4页Chinese Journal of Power Sources

基　　金：湖南省自然科学基金省市联合项目(14JJ5014);中南林业科技大学研究生科技创新基金(CX202102039)。

摘　　要：动力电池散热性能对电动汽车正常运行至关重要。为强化相变材料导热能力,改善动力电池散热效果,以动力电池最高温度和温差作为评价指标,用计算流体力学(CFD)方法研究在相变材料(PCM)中加入不同结构形状和数量的导热翅片对动力电池散热性能的影响。结果表明,添加弧形结构翅片比不添加时电池最高温度和温差降幅分别为7.99和0.67 K;在可用空间内,增加翅片数量,电池最高温度和温差的下降幅度不按比例增大。当加入4个翅片时,电池最高温度和温差下降幅度最大。The heat dissipation performance of the power battery is very important to the normal operation of electric vehicles.In order to strengthen the performance of thermal conductivity of phase change materials and improve the heat dissipation effect of the power battery,the maximum temperature and temperature difference of the power battery were taken as evaluation indexes.The computational fluid dynamics(CFD)method was used to study the effect on the heat dissipation performance of power batteries with thermal conductivity fins of different structure and number into the phase change material(PCM).The results show that the maximum temperature and temperature difference of the battery decreased by 7.99 K and 0.67 K,respectively,when the arc-shaped structure fins are added.In the available space,the decrease rate of the maximum temperature and temperature difference of the battery does not increase with the increase of the number of arc-shaped structure fins.When four arc-shaped fins are added,the rate of decrease in the maximum temperature and temperature difference of the battery is the maximum.

关 键 词：动力电池 热管理 相变材料 导热翅片 

分 类 号：TM912[电气工程—电力电子与电力传动]