| 李望,卢耀辉,李振生,廖洪.车用锂离子电池组冷却系统传热仿真分析[J].装备环境工程,2021,18(2):6-12. LI Wang,LU Yao-hui,LI Zhen-sheng,LIAO Hong.Simulation Analysis of Heat Transfer in Cooling System of Li-ion Battery Pack for Vehicles[J].Equipment Environmental Engineering,2021,18(2):6-12. |
| 车用锂离子电池组冷却系统传热仿真分析 |
| Simulation Analysis of Heat Transfer in Cooling System of Li-ion Battery Pack for Vehicles |
| 投稿时间：2020-07-18 修订日期：2020-08-15 |
| DOI：10.7643/issn.1672-9242.2021.02.002 |
| 中文关键词: 电动汽车 锂离子电池 冷却系统 CFD 传热仿真分析中图分类号:U463.6 TM912.9 文献标识码:A 文章编号:1672-9242(2021)02-0006-07 |
| 英文关键词:electric vehicle Li-ion battery cooling system CFD heat transfer simulation analysis |
| 基金项目:四川省科技计划项目(2018HH0072) |
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| Author | Institution |
| LI Wang | School of Mechanical Engineering,Chengdu 610031, China |
| LU Yao-hui | School of Mechanical Engineering,Chengdu 610031, China ;Engineering Research Center of Advanced Driving Energy-saving Technology, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China |
| LI Zhen-sheng | School of Mechanical Engineering,Chengdu 610031, China |
| LIAO Hong | School of Mechanical Engineering,Chengdu 610031, China |
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| 中文摘要: |
| 目的 解决电动汽车锂离子电池组在高温下的安全性和热失控问题。方法 建立锂离子电池组冷却系统的三维分析模型，应用计算流体动力学(Computational Fluid Dynamics，CFD)方法，结合热传导和热对流理论，对电池组进行仿真分析。结果 锂离子电池组的温度场分布基本相同，呈现出中间低、两侧高的分布特点，且层次变化。冷却液温度越低，电池组最高温度也越低；增大冷却液入口流速，电池组内部最高温度略微降低；冷却板材料对电池组的冷却效果影响很小。采用铝合金冷却板，冷却液温度20 ℃，入口流速2 m/s时，电池组的冷却效果最好。结论 对于本文所设计的冷却系统，冷却液入口流速和冷却板材料的变化对电池组散热效果的影响较小，冷却液入口温度的变化对电池组散热效果的影响较大。应当选择铝合金为冷却板材料，以及合理的冷却液入口温度和流速，以满足轻量化要求，防止电池组过度冷却，减小流道内的阻力损失，提高冷却系统的散热效率。 |
| 英文摘要: |
| To solve the safety and thermal runaway problem of the lithium-ion battery pack of electric vehicle under high temperature, the three-dimensional analysis model of lithium-ion battery cooling system is established. The computational fluid dynamics (CFD) method is applied to simulate and analyze the battery pack with the theory of heat transfer and convection. The temperature field distribution of lithium-ion battery packs is basically the same, with the characteristics of low in the middle and high on both sides, and changed level. The lower the coolant temperature is, the lower the maximum temperature of the battery pack is; the higher the coolant inlet flow rate is, the lower the maximum temperature inside the battery pack is; the cooling plate material has little effect on the cooling effect of the battery pack. For aluminum alloy cooling plate, the cooling effect of the battery pack is the best when the temperature of the coolant is 20 ℃ and the inlet flow rate is 2 m/s. For the cooling system designed in this paper, the change of coolant inlet flow rate and cooling plate material has little effect on the cooling effect of the battery pack, while the change of coolant inlet temperature has great effect on the cooling effect of the battery pack. Therefore, reasonable inlet temperature and flow rate of coolant should be selected, and aluminum alloy should be selected as cooling plate material to meet lightweight requirement, prevent excessive cooling of battery pack, reduce resistance loss in flow channel and improve cooling efficiency of cooling system. |
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