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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

CELL SPACING OPTIMIZATION OF BATTERY PACK IN PARALLEL AIR-COOLED BATTERY THERMAL MANAGEMENT SYSTEM WITH U-TYPE FLOW

Get access (open in a dialog) DOI: 10.1615/IHTC16.ctm.022966
pages 3715-3723

Resumo

Battery thermal management system (BTMS) is critical to guarantee the safety of the battery pack in electrical vehicle. Among the various thermal management technologies, air cooling is one of the most commonly used solutions due to the advantages of low cost and simple structure. In this paper, configuration optimization of the battery pack in the parallel air-cooled system with U-type flow is conducted. The flow resistance network model and the heat transfer model are introduced to calculate the airflow rates in the cooling channels and the cell temperatures, respectively. The effectiveness of the models is validated through compared to the computational fluid dynamics (CFD). Based on the two models, the spacings among the battery cells are optimized through using an optimization strategy. The cooling performances of the optimized BTMS and the original one are evaluated by the CFD method and compared. Results of the typical numerical cases show that the maximum cell temperature difference is reduced by more than 40% after cell spacing optimization without increasing the power consumption. The similar improvement is also achieved under the situations with various inlet airflow rates. It suggests that the cooling performance of the parallel air-cooled BTMS with U-type flow can be improved remarkably through cell spacing optimization of the battery pack.