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A study of variable cell spacings to the heat transfer efficiency of air-cooling battery thermal management system


Zhao, G and Wang, X and Negnevitsky, M, A study of variable cell spacings to the heat transfer efficiency of air-cooling battery thermal management system, Applied Sciences, 11, (23) Article 11155. ISSN 2076-3417 (2021) [Refereed Article]


Copyright Statement

Copyright 2021 The Authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0)

DOI: doi:10.3390/app112311155


The air-cooling battery thermal management system has been widely adopted as the thermal management device for power accumulators on electric vehicles nowadays. To improve the system heat transfer coefficient with the minimum rise in cost, this study modified conventional rectangular cell arrangements for 21,700 cylindrical cell battery packs with two approaches: 1. increase the vertical spacings; 2. convert constant vertical spacings to gradient vertical spacings. The results show that smaller vertical spacings are beneficial to the overall cooling performances of the constant vertical spacings designs at almost all flow rates. The gradient vertical spacing design with larger spacing could deliver better temperature uniformity, while the one with smaller spacings could suppress the maximum temperature more efficiently at higher flow rates. However, the total battery pack volume of Design 7 (the largest gradient vertical spacing design) is 7.5% larger than the conventional design.

Item Details

Item Type:Refereed Article
Keywords:lithium-ion battery, air cooling, battery thermal management system, battery cell spacing, gradient vertical spacing
Research Division:Engineering
Research Group:Mechanical engineering
Research Field:Energy generation, conversion and storage (excl. chemical and electrical)
Objective Division:Energy
Objective Group:Energy storage, distribution and supply
Objective Field:Energy systems and analysis
UTAS Author:Zhao, G (Mr Gang Zhao)
UTAS Author:Wang, X (Professor Xiaolin Wang)
UTAS Author:Negnevitsky, M (Professor Michael Negnevitsky)
ID Code:147943
Year Published:2021
Web of Science® Times Cited:2
Deposited By:Engineering
Deposited On:2021-11-25
Last Modified:2021-12-07
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