基于多蛇形变结构流道冷却板的散热性能研究  

Research on heat dissipation performance of cooling plate based on multi-serpentine variable structure flow channel

作　　者：张继龙 陈江英 李翔晟[1] ZHANG Ji-long;CHEN Jiang-ying;LI Xiang-sheng(School of Mechanical and Electrical Engineering,Central South University of Forestry and Technology,Changsha Hunan 410004,China;Automotive Engineering 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2期190-194,共5页Chinese Journal of Power Sources

基　　金：湖南省自然科学基金省市联合项目(14JJ5014)。

摘　　要：动力电池的散热性能由冷却板冷却流道的面积、位置和液流流向决定。以冷却板最高板温、平均板温、温度标准差为评价指标,利用计算流体力学(CFD)方法研究了流道面积、流道位置、液流流向对多蛇形变结构流道冷却板模型散热性能的影响。结果表明,增大流道面积可降低流体压降和冷却板平均板温,但以牺牲冷却板温度均匀性为一定代价;对流道尺寸固定不变的多蛇形流道冷却板,当流道截面长宽比不大于3时,设置逆流流道能降低冷却板温度标准差;冷却板的散热性能因冷却流道在冷却板上的位置不同而产生较大差异,流道最佳布置位置沿冷却板水平中心线向流道空间分布更均匀一侧偏移。The heat dissipation performance of the power battery was determined by the area,position and flow direction of the cooling channel of the cooling plate.In this paper,the maximum plate temperature,average plate temperature,and temperature standard deviation of the cooling plates were used as evaluation indicators.The influence of flow channel area,flow channel position and flow direction on heat dissipation performance of multiserpentine structure flow channel cooling plate model was studied by using computational fluid dynamics(CFD)method.The results show that increasing the flow channel area can reduce the pressure drop and the average plate temperature at the expense of cooling plate temperature uniformity;for multi-serpentine cooling plates with fixed channel size,when the cross-sectional aspect ratio of the flow channel is no more than 3,setting counter-current flow channel can reduce the standard deviation of the cooling plate temperature;the heat dissipation performance of the cooling plate is greatly different due to the different positions of the cooling flow channel on the cooling plate;the optimal arrangement position of the flow channel is shifted along the horizontal center line of the cooling plate to the more uniform side of the flow channel spatial distribution.

关 键 词：动力电池 多蛇形流道 变结构 冷却板 散热性能 

分 类 号：TM911.4[电气工程—电力电子与电力传动]