郭莹莹, 周龙, 张素梅,等.圆柱形锂离子电池及模组风冷温度场数值模拟[J].河南理工大学学报（自然科学版）,2022,41(6):145-154.

GUO Y Y, ZHOU L, ZHANG S M,et al.Numerical simulation of air-cooled temperature field of cylindrical lithium-ion battery and module[J].Journal of Henan Polytechnic University(Natural Science) ,2022,41(6):145-154.

圆柱形锂离子电池及模组风冷温度场数值模拟

郭莹莹, 周龙, 张素梅, 温小萍

河南理工大学 机械与动力工程学院，河南 焦作 454000

摘要:为了对锂离子电池更好地进行热管理，对锂离子电池进行风冷温度场数值模拟分析。根据进、出风口位置及方向设计18组电池模组结构，利用CFD软件对18650型单体锂离子电池和电池模组进行不同条件下温度场散热效果分析。结果表明，单体锂离子电池试验和模拟数值变化趋势一致，且相对误差不超过5%；相同模拟工况下，单层电池模组进、出风口同侧布置优于异侧布置，进、出风口横向布置优于竖向布置，双层电池模组进、出风口同侧布置优于异侧布置，进、出风口竖向布置优于横向布置，得出D1为最优模型；D1风道间距为4 mm时，最高温度、平均温度、最大温差和一致性系数分别为305.30，304.29，2.20 K和0.72%，电池模组温度场散热效果及均匀性最佳；当进口风速从0.5 m/s增大到5 m/s时，各项温度指标分别下降12.53，11.36，3.21 K和1%，当进口风速超过3 m/s时，温度场各项温度指标下降缓慢，温度场散热效果不明显。锂离子电池及模组风冷温度场数值模拟对其在实际应用中具有重要参考价值，可为电池热管理系统提供指导依据。

关键词:锂离子电池;风冷;温度场;风口位置;风道间距;进口风速

doi:10.16186/j.cnki.1673-9787.2021030080

基金项目:国家自然科学基金资助项目（51774115）

收稿日期:2021/03/24

修回日期:2021/06/18

出版日期:2022/11/25

Numerical simulation of air-cooled temperature field of cylindrical lithium-ion battery and module

GUO Yingying, ZHOU Long, ZHANG Sumei, WEN Xiaoping

School of Mechanical and Power Engineering，Henan Polytechnic University，Jiaozuo 454000，Henan，China

Abstract:In order to realize better thermal management of lithium-ion battery，numerical simulation analysis of air-cooled temperature field was performed on lithium-ion battery.According to the different positions and directions of the air inlet and outlet，the structures of 18 groups of battery modules were designed，CFD software was used to analyze the heat dissipation effect of the temperature field under different conditions for 18650 single lithium-ion battery and battery modules.The results showed that the variation trends of the single lithium-ion battery test and simulation values were consistent，and the relative error did not exceed 5%.Under the same simulation conditions，the single-layer battery module inlet and outlet layout on the same side was better than the opposite side layout，and the horizontal layout of the inlet and outlet was better than the vertical layout，the double-layer battery module inlet and outlet layout on the same side was better than the opposite side layout，and the vertical layout of the inlet and outlet was better than the horizontal layout，the optimal model was D1.When the D1 air duct spacing was 4 mm，the maximum temperature，average temperature，maximum temperature difference and consistency coefficient were 305.30，304.29，2.20 K and 0.72% respectively，and the heat dissipation effect and uniformity of the battery module temperature field were the best.When the inlet wind speed increased from 0.5 to 5 m/s，the temperature indexes dropped by 12.53，11.36，3.21 K and 1% respectively.When the inlet wind speed exceeded 3 m/s，the temperature indexes of the temperature field decreased slowly.The heat dissipation effect of the temperature field was not obvious.The numerical simulation of the air-cooled temperature field of lithium-ion batteries and modules had important reference value in practical applications and could provide a guiding basis for battery thermal management system.

Key words:lithium-ion battery;air-cooled;temperature field;air position;distance between air ducts;inlet wind speed

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