吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (4): 1032-1039.doi: 10.13229/j.cnki.jdxbgxb201704004

• 论文 • 上一篇    下一篇

动力电池组扁管束液流热管理增效

张天时1, 2, 宋东鉴2, 高青1, 2, 王国华1, 2, 周萌2, 闫玉英3   

  1. 1.吉林大学 汽车仿真与控制国家重点实验室,长春 130022;
    2.吉林大学 汽车工程学院, 长春130022;
    3.诺丁汉大学 工程系,诺丁汉 NG72RD,英国
  • 收稿日期:2016-05-26 出版日期:2017-07-20 发布日期:2017-07-20
  • 通讯作者: 高青(1961-),男,教授,博士生导师.研究方向:汽车热管理及能源高效利用.E-mail:gqing@jlu.edu.cn
  • 作者简介:张天时(1985-),男,博士研究生.研究方向:电动汽车热管理.E-mail:zhangtianshi@jlu.edu.cn
  • 基金资助:
    国家自然科学基金项目(51376079).

Promotive effect on thermal management of power battery pack with liquid flow and flat tube bank

ZHANG Tian-shi1, 2, SONG Dong-jian2, GAO Qing1, 2, WANG Guo-hua1, 2, ZHOU Meng2, YAN Yu-ying3   

  1. 1.State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China;
    2.College of Automotive Engineering, Jilin University, Changchun 130022, China;
    3.Faculty of Engineering, University of Nottingham, Nottingham NG72RD, UK
  • Received:2016-05-26 Online:2017-07-20 Published:2017-07-20

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摘要： 针对电动汽车动力电池组热管理需求,设计了一种扁管束叠层液流换热结构,并通过CFD计算对比分析了添加高导热石墨膜前、后电池组冷却过程中的温变性、温度一致性和温均性等。仿真计算结果表明:未添加石墨前电池片间扁管束和单片电池表面扁管间换热一致性较好,但相同电池片上不同特征点间温度差异较大;此外,电池表面铺垫柔性石墨后电池温降速率明显增大,同时单片电池温均性得到显著提升。这表明本文设计的管束叠层液流换热结构能够保障电池组较佳的热管理效果,与整板式液体换热电池包相比进一步实现了轻量化。

关键词: 车辆工程, 电池热管理, 管束叠层, 柔性石墨, 温均性

Abstract: To explore Battery Thermal Management (BTM) for Electric Vehicle (EV), a heat exchanger of battery pack is designed using aluminum flat tube bank and flexible graphite. The investigation focuses on the thermal characteristics of the battery pack in the BTM process, such as the temperature variation and temperature uniformity of the battery pack and cell surface etc. The computation results show that, without flexible graphite, the heat exchange of flat tube banks in battery pack and flat tubes on cell surface present better consistency, but the temperature difference is larger for different measure points in the same battery cell. In addition, the battery cooling speed rises obviously, and the temperature uniformity of cell surface is significantly improved. The results indicate that the battery pack obtains well cooling effect, and it also realizes further lightweight compared with full-contact liquid cooling plate.

Key words: vehicle engineering, battery thermal management, laminated flat tubes, flexible graphite, temperature uniformity

中图分类号: 

  • U469.72
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