电动车电池组液冷散热性能影响因素分析  

Analysis of Influencing Factors on Heat Dissipation Performance on Liquid-Cooled of Electric Vehicle Battery Module

作　　者：杜明徽 郑心玮 江振文 康飞宇[1] 杜鸿达[1] Du Minghui;Zheng Xinwei;Jiang Zhenwen;Kang Feiyu;Du Hongda(Guangdong Provincial Key Laboratory of Thermal Management Engineering ＆ Materials,Graduate School at Shenzhen,Tsinghua University,Shenzhen 518055,China)

机构地区：[1]清华大学深圳研究生院,广东深圳518055

出　　处：《广东化工》2018年第16期48-50,23,共4页Guangdong Chemical Industry

摘　　要：采用CFD求解器对电动车锂离子电池组的液冷散热模型进行了模拟计算。分析了液冷散热结构中冷板结构、冷却液流速及冷却液的选择对散热效果的影响。结果表明:螺旋形通道的冷板结构可使冷板温度较均匀,但管内速度流线不稳定;50%乙二醇溶液作为冷却液散热效果与水接近,又具有防冻作用;冷却液的流速越大,电池组最高温度越低,温差越大。The CFD solver was used to simulate the liquid cooling model of the electric vehicle lithium-ion battery module. The effects of cold plate structure, coolant flow rate, and cooling fluid selection on the cooling effect were analyzed. The results show that the cold plate structure of the spiral channel can make the cold plate temperature more uniform, but the velocity line in the tube is not stable; 50 % ethylene glycol solution acts as a cooling liquid to dissipate water close to the water, and it also has antifreeze effect; when the flow rate of the coolant is greater, the maximum temperature of the battery module is lower, with greater temperature difference.

关 键 词：锂离子电池 液冷 冷板 冷却液 

分 类 号：U469.72[机械工程—车辆工程]