储能科学与技术2025，Vol.14Issue(1)：152-161,10.DOI:10.19799/j.cnki.2095-4239.2024.0638
关键因素对储能浸没式锂电池包温度特性影响的研究
Research on the influence of key factors on the temperature characteristics of energy storage immersing lithium-ion battery pack
摘要
Abstract
With the continuous iteration and innovation of the thermal management technology of energy storage batteries,direct immersing liquid cooling technology has shown immense application potential.Compared with the indirect cold plate liquid cooling technology,the direct immersing liquid cooling technology has significantly improved battery heat transfer and temperature equalization.Although there is a continuous emergence of relevant research on immersing battery pack cooling,systematic induction and comprehensive studies on the impact of key influencing factors on immersing battery systems remain insufficient.Therefore,the effects of coolant type,cell heat value,and flow channel on the temperature characteristics were investigated using numerical simulations based on a self-developed novel immersing battery pack system.The research indicated that the fluorinated solution exhibits the best temperature performance as immersing coolant,followed by silicone and mineral oils.The key parameter that determines the performance of the coolant is the fluid kinematic viscosity.Compared with the cold plate technology,the immersing technology showed better cooling performance at low,medium,and high charge and discharge ratios,more significantly in medium and high cell heat value conditions.The maximum temperature,maximum temperature difference,and maximum temperature difference between the top and bottom surfaces of the immersing battery pack decreased by 27.26℃,1.76℃,and 32.03℃,respectively.The flow channel significantly improves the temperature performance of the battery pack.Compared with the battery pack without a flow channel,the maximum temperature,maximum temperature difference,and maximum temperature difference between the top and bottom surfaces of the battery pack with a flow channel decreased by 3.34℃,2.65℃,and 1.54℃,respectively.It improves the uniformity of the coolant distribution by changing the spatial distribution of the flow lines in the battery pack.This research offers a reference and summarizes the heat flow field for the thermal design of immersing battery packs and the selections of cells and coolants for future applications.关键词
储能电池/浸没式冷却/冷却液/发热量/流道Key words
energy storage battery/immersing cooling/liquid coolant/heat value/flow channel分类
信息技术与安全科学引用本文复制引用
李岳峰,丁纬达,韦银涛,孙勇,饶庆,项峰,姚颖聪..关键因素对储能浸没式锂电池包温度特性影响的研究[J].储能科学与技术,2025,14(1):152-161,10.基金项目
浙江省科学技术厅项目(2023C01123). （2023C01123）
