储能科学与技术2025，Vol.14Issue(2)：648-658,11.DOI:10.19799/j.cnki.2095-4239.2024.0751
储能电池组浸没式液冷系统冷却性能模拟研究
Simulation study on cooling performance of immersion liquid cooling systems for energy-storage battery packs
摘要
Abstract
With the rapidly increasing demand for energy storage,single batteries are increasingly designed for larger capacities.Consequently,large-capacity batteries are gradually becoming mainstream electrochemical energy storage systems.However,existing research on battery pack cooling systems primarily focuses on the small-capacity battery systems.In this study,we investigate a submerged liquid cooling system for 280 Ah large-capacity battery packs.We discuss the effects of various parameters on cooling performance,including battery spacing,coolant import and export methods,inlet and outlet flow rates,and types.Furthermore,we analyze the influence of coolant thermophysical parameters on the cooling effect.The results show that increasing the cell spacing appropriately has a positive cooling effect on submerged liquid-cooled battery packs.When the cell spacing is increased from 0 mm to 5 mm,the maximum temperature difference ΔTmax and the maximum temperature Tmax of the battery packs are reduced by 1.57℃and 1.84℃,respectively.The coolant inlet position has a greater effect on ΔTmax and Tmax than the outlet position,and the inlet position has a greater effect on the flow field inside the battery box than the outlet position.ΔTmax and Tmax decrease with increase in the inlet flow rate.When the inlet flow rate increased from 0.2 m/s to 0.4 m/s,ΔTmax and Tmax decreased by 21.1%and 8.0%.Deionized water exhibits the best cooling effect,whereas silicone oil exhibits the worst cooling effect.Compared to silicone oil,deionized water reduced ΔTmax and Tmax by 5.17℃and 5.99℃.Among the thermophysical parameters of the coolant,the order of importance and influence on the battery pack's cooling performance is as follows:density,specific heat capacity,thermal conductivity,and power viscosity.The findings of this study offer valuable insights into designing large-capacity battery pack-submerged liquid cooling system.关键词
浸没式冷却/电池热管理/参数敏感性/数值模拟Key words
immersion cooling/battery thermal management/parameter sensitivity/numerical simulation分类
动力与电气工程引用本文复制引用
陈岳浩,陈莎,陈慧兰,孙小琴,罗永强..储能电池组浸没式液冷系统冷却性能模拟研究[J].储能科学与技术,2025,14(2):648-658,11.基金项目
湖南省科技创新领军人才(2023RC1057). （2023RC1057）
