期刊
APPLIED THERMAL ENGINEERING
卷 220, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2022.119790
关键词
Lithium-ion battery; Battery thermal management system; Tab cooling; Plate-fin module; Cycle life prediction
The objective of this study is to evaluate the thermal management performance of a tab-cooling method for pouch-type lithium-ion batteries under various operating conditions. The tab-cooling method shows better thermal performance for battery cooling than the fin-thickness method owing to its effective cooling performance, especially at high discharge rates. It also demonstrates a higher cooling performance-to-weight ratio due to the higher thermal conductivity and lightness of ceramics. The tab-cooling method improves the lifespan of the battery and has higher equivalent full cycle (EFC) and EFC-to-weight ratio compared to the no-tab (NT) cooling condition at specified fin thickness.
The objective of this study is to evaluate the thermal management performance of a tab-cooling method for pouch-type lithium-ion batteries under various operating conditions. The thermal performance of tab-cooling and fin-thickness methods are evaluated using a battery simulator. The tab-cooling method demonstrates bet-ter thermal performance for battery cooling than the fin-thickness method owing to its effective cooling per-formance. In particular, the performance of the tab-cooling method improved as the discharge rate increased owing to the effective dissipation of heat in the tab area. Furthermore, the tab-cooling method shows a higher cooling performance-to-weight ratio than the fin-thickness method owing to the higher thermal conductivity and lightness of ceramics. In addition, the tab-cooling method shows excellent lifespan improvement at higher discharge rates. The equivalent full cycle (EFC) of the tab-cooling method is 8-13 % higher than that of the no -tab (NT) cooling condition at a discharge rate of 5C. The EFC-to-weight ratio of the AlN tab-cooling method is 4-6 % higher than that of the NT cooling condition at a specified fin thickness.
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