Research on heat dissipation performance and flow characteristics of air-cooled battery pack
Research on heat dissipation performance and flow characteristics of air-cooled battery pack
复制标题
风冷电池组散热性能及流动特性研究
DOI：
10.1002/er.4113
复制
发表时间：
2018
影响因子：
4.6
通讯作者：
Tang Wei
中科院分区：
文献类型：
--
作者：
Xu Xiao Ming;Sun Xu Dong;Hu Dong Hai;Li Ren Zheng;Tang Wei
随着化石燃料的枯竭和环境污染的加剧，电动汽车的研发速度不断加快，电池组的热管理变得越来越重要。以自然风冷电动汽车电池组为研究对象，对有无通风孔的电池组散热性能进行了仿真分析。然后研究了内流场和外流场的影响。利用场协同原理分析了速度场和温度场幅值对冷却效果的影响。结果表明：通风孔使电池组的最大温升和内部最大温差分别降低了约23.1%和19.9%，提高速度值可以提高散热性能，提高温度值则会降低散热性能。合理的通风孔设计可以使内外流场协同工作，达到最佳的冷却效果。为电动汽车风冷散热性能分析、电池组结构布置、进、出风方式选择提供参考依据。
With the depletion of fossil fuels and the aggravation of environmental pollution, the research and development speed of electric vehicles has been accelerating, and the thermal management of battery pack has become increasingly important. This paper selects the electric vehicle battery pack with natural air cooling as the study subject, conducts simulation analysis of the heat dissipation performance of battery packs with and without vents. Then this paper researches on the influence of internal flow field and external flow field. Field synergy principle is used to analyze the effect of velocity field and temperature field amplitude. The results show the following: it is found that the maximum temperature rise and the internal maximum temperature difference of the battery pack with vents are reduced by about 23.1% and 19.9%, raising speed value can improve the heat dissipation performance, and raising temperature value can decrease the heat dissipation performance. Reasonable design of the vents can make the inner and outer flow field work synergistically to achieve the best cooling effect. Then the reference basis for the air cooling heat dissipation performance analysis of electric vehicle, battery pack structure arrangement, and air‐inlet and air‐outlet pattern choosing are offered.