Passive flow rate regulation and unequally spaced channel based battery thermal management system

Chenwei Shi, Jun Xu, Zhechen Guo, Xingzao Wang and Xuesong Mei

Energy, 2025, vol. 320, issue C

Abstract: Lithium-ion batteries (LIBs) used in electric vehicles are susceptible to high temperatures and temperature difference, which can significantly impact their lifespan and safety. To solve these problems, a battery thermal management system (BTMS) comprises an optimized cold plate named unequally spaced channel (USC) and a passive flow regulation structure is proposed. For the USC cold plate, a multi-objective optimization is carried out by adopting response surface methodology (RSM) for the factors affecting the maximum temperature (Tmax) and temperature difference (ΔT). Additionally, the passive flow regulation structure ensures a more uniform distribution of coolant across each cold plate. Compared with the structure without flow rate regulation, results indicate that the proposed BTMS can reduce the Tmax and ΔT by 3.50 °C and 43.15 %, respectively. Furthermore, the group efficiency is calculated to be 83.79 %, which is more beneficial to be implemented in real applications.

Keywords: Lithium-ion batteries; Battery thermal management system; Cold plate; Flow rate regulation (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:320:y:2025:i:c:s0360544225009739

DOI: 10.1016/j.energy.2025.135331

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