摘要
以可充电三元体系动力电池为研究对象,对电池单体的散热性能进行数值模拟研究。通过研究传统的电池冷板冷却方式,设计提出电池单体间两种流道设计方案,通过对比A型和B型两种流道机构冷板,分析选定B型流道结构,并对冷板流道入口位置、冷却液流速和流道宽度进行了研究,发现50%乙二醇在入口流量为4g/s时从正极测流入电池温度更加均匀,散热效果好且能耗低,并发现在流道宽度对冷板散热效果影响甚微,综合考虑电池冷却系统质量和体积最终选择流道宽度为5mm。最后对冷板流道进行了优化,压降降低11.4%。仿真结果将为基于小通道冷板的电池热管理系统的设计提供参考。
Taking the rechargeable ternary system power battery as the research object,the heat dissipation performance of the battery cell is numerically simulated.By studying the traditional cooling method of the battery cold plate,the design proposes two flow channel design schemes between the battery cells.By comparing the A-type and B-type flow channel mechanism cold plates,the B-type flow channel structure is analyzed and selected,and the cooling The inlet position of the plate runner,the coolant flow rate and the width of the runner were studied.It was found that the temperature of 50%ethylene glycol flowing from the positive electrode into the battery was more uniform when the inlet flow was 4g/s,the heat dissipation effect was good,and the energy consumption was low.The width of the runner has little effect on the heat dissipation effect of the cold plate.Considering the quality and volume of the battery cooling system,the final choice of runner width is 5mm.Finally,the cold plate runner was optimized,and the pressure drop was reduced by 11.4%.The simulation results will provide reference for the design of battery thermal management system based on small aisle cold plate.
作者
张航
赵津
张永德
王超
ZHANG Hang;ZHAO Jin;ZHANG Yong-de;WANG Chao(Department of Mechanical Engineering,Guizhou University,Guizhou Guiyang 550025,China;Key Laboratory of Advanced Manufacturing Technology,Guizhou Guiyang 550025,China)
出处
《机械设计与制造》
北大核心
2023年第6期234-238,243,共6页
Machinery Design & Manufacture
基金
黔科合重大专项字ZNWLQC[2019]3012,黔教合KY字[2014]226。
关键词
锂电池
冷板
流道
入口流量
流道宽度
压降
Lithium Battery
Cold Plate
Channel
Inlet
Flow
Runner Width
Pressure Drop
