Heat dissipation performance of the module combined CPCM with air cooling for lithium-ion batteries

被引：0
|
作者：
Du J. [1 ,3 ]
Yang W. [2 ,3 ]
Huang K. [1 ,3 ]
Lian C. [1 ,2 ,3 ]
Liu H. [1 ,2 ,3 ]
机构：
[1] School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai
[2] School of Chemical Engineering, East China University of Science and Technology, Shanghai
[3] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai
来源：
Huagong Xuebao/CIESC Journal | 2023年 / 74卷 / 02期
关键词：
air cooling; composite phase change material; electrochemical model; lithium-ion battery; thermal safety;
D O I：
10.11949/0438-1157.20221068
中图分类号：
学科分类号：
摘要：
The heat generated during the discharge of lithium-ion batteries cannot be dissipated in time, which will lead to a decrease in battery performance. Designing a reasonable heat dissipation structure of the battery pack is a key part of improving battery performance. In this paper, a cooling structure of battery pack based on the combination of composite phase change materials (CPCM) and air cooling is proposed. By combining the pseudo two-dimensional electrochemical model with the three-dimensional heat dissipation model, the heat generation process of the battery and the heat transfer process between the battery and the outside were analyzed, and the effects of the thickness of phase change material (PCM), the content of expanded graphite (EG) in the CPCM, the number of air cooling channels and the flow direction of air cooling gas on the heat dissipation performance of the battery pack were investigated. The results show that the heat dissipation performance of the CPCM/air cooling composite heat dissipation structure is significantly better than that of the battery pack only using CPCM. When the PCM thickness is equal to the battery radius and the EG mass fraction is 20%, the heat dissipation performance of the battery pack is the best. In addition, the two-way ventilation duct design can reduce the battery temperature more effectively. The conclusions can provide theoretical guidance for the heat dissipation design of lithium-ion battery pack. © 2023 Chemical Industry Press. All rights reserved.
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页码：674 / 689
页数：15
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