Fujian LongKing Co., Ltd.;School of Metallurgy, Northeastern University;Fujian Longking Nest Energy Storage Technology Co., Ltd.;
[Objective] During the operation of lithium-ion energy storage batteries, a large amount of heat is generated,and high temperatures can lead to thermal runaway, affecting battery safety. The thermal management system is a keyfactor affecting the stability and efficiency of lithium-ion energy storage batteries. [Methods] Using numerical simulationmethods, the heat transfer characteristics of parallel air-cooled and liquid-cooled battery modules are quantitativelycompared and discussed, including heat transfer performance, flow resistance performance, overall flow heat transferperformance, and the influence of ambient temperature. [Results] The results show that when considering themaximum temperature and maximum temperature difference of the battery module, there is a threshold for thetemperature difference between the inlet and outlet of the cooling medium in the selection between air-cooled and liquid-cooled methods. The overall temperature uniformity of the liquid-cooled method is better than that of air-cooled, with atemperature difference of only 0.5 ℃ between each cell, while air-cooled shows 6.1 ℃. The heat transfer performance ofthe liquid-cooled method is better than that of air-cooled, while the flow resistance performance of the liquid-cooledmethod is inferior to that of air-cooled. However, overall, the comprehensive flow heat transfer performance of the liquid-cooled method is better than that of air-cooled, and the performance advantage gradually increases with the increase incooling medium flow rate. In the environment temperature range of 0 ℃ to 30 ℃, the liquid-cooled method has astronger ability to adapt to environmental temperature changes than air-cooled, with its heat transfer performance beingless affected by environmental temperature, resulting in a maximum temperature increase of only 1.1 ℃. [Conclusion] Theresearch methods and results described in this paper can provide references for related research, which is conducive to thefurther optimization of energy storage cooling methods.
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Basic Information:
DOI：10.19944/j.eptep.1674-8069.2025.02.001
China Classification Code:TM912;TK124
Citation Information:
[1]叶兴联,钟志韬,张楚城等.储能电池模组风冷和液冷换热特性对比[J].电力科技与环保,2025,41(02):173-182.DOI:10.19944/j.eptep.1674-8069.2025.02.001.
Fund Information:
国家自然科学基金项目(12072071); 福建龙净环保股份有限公司科技基金开发项目(202404-1)