PCM/液冷复合式锂电池组热管理

doi:10.12028/j.issn.2095-4239.2019.0030

储能科学与技术 ›› 2019, Vol. 8 ›› Issue (5): 915-921.doi: 10.12028/j.issn.2095-4239.2019.0030

PCM/液冷复合式锂电池组热管理

安治国, 陈星, 赵琳

重庆交通大学机电与车辆工程学院, 重庆 400074

收稿日期:2019-03-07 修回日期:2019-04-11 出版日期:2019-09-01 发布日期:2019-04-12
通讯作者: 安治国(1976-),男,博士,副教授,研究方向为新能源电动汽车,E-mail:1281643248@qq.com。
作者简介:安治国(1976-),男,博士,副教授,研究方向为新能源电动汽车,E-mail:1281643248@qq.com。

Numerical investigation on integrated thermal management for lithiumion battery pack with phase change material and liquid cooling

AN Zhiguo, CHEN Xing, ZHAO Lin

Department of Mechanical and Vehicle Engineering, Jiaotong University, Chongqing 400074, China

Received:2019-03-07 Revised:2019-04-11 Online:2019-09-01 Published:2019-04-12

摘要/Abstract

摘要： 为满足3 C放电倍率下电池组散热要求，提出了PCM\液冷复合式散热方案，利用有限元分析了液体流速、流道排列方式、铝制框架鳍宽和环境温度对电池组温度的影响。结果表明，增加流速可优化电池组散热性能，但当流速大于0.08 m/s时，流速的增加对散热系统无明显优化；各流速下Type I散热方式效果均为最优且电池组满足散热要求；鳍宽为2 mm时可将电池组最高温度进一步降低1.6℃；当环境温度从38℃增至42℃时，复合式散热系统体现了良好的热稳定性能。

关键词: 锂电池组, 相变材料, 热管理, 液冷

Abstract: A novel phase change material based thermal management system coupled with liquid cooling was proposed in order to sustain the temperature rise and distribution within desirable ranges of the lithium-ion battery under 3C discharge rate. A numerical study was conducted to investigate the effects of water flow rate, channel arrangement, the fin width of aluminum frame and ambient temperature on the thermal behavior of the integrated thermal management system. The results showed that increasing the water flow rate can optimize the heat dissipation of the battery pack, but when the flow rate is greater than 0.08 m/s, the increase of the flow rate has no obvious improvement for the integrated thermal management system. Under different water flow rate, Type I cooling mode showed the best performance and met the request of thermal dissipation completely; The maximum temperature of the battery pack can be further reduced 1.6℃ by the integrated thermal management system with fin width of 2 mm; when the ambient temperature from 38℃ to 42℃, the thermal stability of the integrated system was obviously better than that of the liquid cooling system.

Key words: lithium-ion battery pack, phase change material, thermal management, liquid cooling

中图分类号:

TM912.9

安治国, 陈星, 赵琳. PCM/液冷复合式锂电池组热管理[J]. 储能科学与技术, 2019, 8(5): 915-921.

AN Zhiguo, CHEN Xing, ZHAO Lin. Numerical investigation on integrated thermal management for lithiumion battery pack with phase change material and liquid cooling[J]. Energy Storage Science and Technology, 2019, 8(5): 915-921.

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PCM/液冷复合式锂电池组热管理

Numerical investigation on integrated thermal management for lithiumion battery pack with phase change material and liquid cooling

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