双层蛇形通道冷板动力电池热管理数值模拟

兰州理工大学学报 ›› 2024, Vol. 50 ›› Issue (5): 62-70.

双层蛇形通道冷板动力电池热管理数值模拟

张荃, 张春化^*, 张子叶

长安大学能源与电气工程学院, 陕西西安 710016

收稿日期:2023-03-23 出版日期:2024-10-28 发布日期:2024-10-31
通讯作者: 张春化(1963-),男,陕西咸阳人,教授,博导.Email:zch@chd.edu.cn
基金资助:
陕西省重点研发计划项目(2019ZDLGY15-07)

Numerical simulation on power battery thermal management of double layers serpentine channel cold plate

ZHANG Quan, ZHANG Chun-hua, ZHANG Zi-ye

School of Energy and Electrical Engineering, Chang’an University, Xi’an 710016, China

Received:2023-03-23 Online:2024-10-28 Published:2024-10-31

摘要/Abstract

摘要： 针对电动汽车高能量密度动力电池,为改善热管理以确保其安全性,对某型镍钴锰酸锂电池模组提出了一种底部布置的双层蛇形通道冷板;通过数值模拟确定了冷却液的最佳流动方案为方案一和通道的最佳宽度为10 mm,依次分析了冷却液质量流量、电池放电倍率和环境温度对电池模组最高温度、温差和冷却液压力损失的影响.结果表明:随着放电倍率和环境温度的增加,电池模组的最高温度和温差均会增加,增加冷却液的流量可以更好地控制电池的最高温度,但会导致压力损失的增加;放电倍率小于0.7 C时,不需要启动液冷系统.

关键词: 方形锂离子电池, 蛇形通道, 冷板, Fluent

Abstract: For the high-energy-density power batteries of electric vehicles, a double-layer serpentine channel cold plate on the battery bottom is proposed for a nickel-cobalt-manganate lithium battery module in order to improve the batteries thermal management and ensure their safety. The optimal coolant flow scheme is the first scheme and the optimal channel width is 10 mm determined by numerical simulation.The influences of coolant mass flow rate, battery’s discharge rate and ambient temperature on the maximum temperature, temperature difference of battery module, and coolant pressure loss were analyzed successively. The results show that with the increase of discharge rate and ambient temperature, both the maximum temperature and temperature difference of the module increase. Increasing the flow rate of coolant can effectively control the maximum temperature of the battery, but this comes at the cost of increased pressure loss. Notably, when the discharge rate is less than 0.7 C, it is no longer necessary to start the liquid cooling system.

Key words: square lithium-ion battery, serpentine channel, cold plate, Fluent

中图分类号:

张荃, 张春化, 张子叶. 双层蛇形通道冷板动力电池热管理数值模拟[J]. 兰州理工大学学报, 2024, 50(5): 62-70.

ZHANG Quan, ZHANG Chun-hua, ZHANG Zi-ye. Numerical simulation on power battery thermal management of double layers serpentine channel cold plate[J]. Journal of Lanzhou University of Technology, 2024, 50(5): 62-70.

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