基于同心圆结构的新型液冷板优化设计及其性能研究  

Optimized Design and Performance Study of New Liquid Cooling Plate Based on Concentric Circle Structure

作　　者：路兴隆 张甫仁[1] 赵海波[2] 孙世政[1] 李雪 赵浩东 Lu Xinglong;Zhang Furen;Zhao Haibo;Sun Shizheng;Li Xue;Zhao Haodong(School of Mechatronics&Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074;Ocean School,Yantai University,Yantai 264005)

机构地区：[1]重庆交通大学机电与车辆工程学院,重庆400074 [2]烟台大学海洋学院,烟台264005

出　　处：《汽车工程》2023年第11期2058-2069,2081,共13页Automotive Engineering

基　　金：国家自然科学基金(52105542)资助。

摘　　要：为提升电池热管理系统的综合性能,本文提出了一种具有同心圆结构通道的液冷板。首先,利用控制方程讨论了环形通道数量和宽度对液冷板综合性能的影响,并通过综合评价指标选出了最佳环形通道数量和宽度。然后,为了更大程度上降低液冷板压降,将部分曲段通道进行直化,并优化了直段通道角度以及圆心距。与初始模型相比,最优模型的压降降低了62.83 Pa(67.61%),温度降低了1.1℃。最后,为进一步提升系统的散热性能,在最优模型的基础上引入了不同种类和体积分数的纳米流体作为冷却介质,与纯水相比,在低雷诺数下采用纳米流体作为冷却介质可以获得较好的综合性能,综合评价指标最高可提升16.19%,效果显著。To improve the comprehensive performance of the battery thermal management system,a liquidcooled plate with concentric circular structure channels is proposed in this paper.Firstly,the influence of the number and width of annular channels on the comprehensive performance of the liquid-cooled plate is discussed by using the control equation,and the optimal number and width of annular channels are selected by comprehensive evaluation indexes.Then,in order to reduce the pressure drop of the liquid-cooled plate to a greater extent,some of the curved section channels are straightened,and the angle of the straight section channels and the circle center distance are optimized.Compared with the initial model,the pressure drop of the optimal model is reduced by 62.83 Pa(67.61%)and the temperature is reduced by 1.1℃.Finally,in order to further improve the cooling performance of the system,nanofluids of different types and volume fractions are introduced as cooling media based on the optimal model.Compared with pure water,better overall performance can be obtained by using nanofluids as cooling media at low Reynolds number,and the overall evaluation index can be improved by up to 16.19%,with significant results.

关 键 词：液冷板 同心圆 纳米流体 电池热管理系统 

分 类 号：U469.72[机械工程—车辆工程]