吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (5): 1339-1348.doi: 10.13229/j.cnki.jdxbgxb20170860

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混流集成式电池组热管理温均特性增效仿真

王炎1,2, 高青1,2, 王国华1,2, 张天时1,2, 苑盟1   

  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
  • 收稿日期:2017-08-16 出版日期:2018-09-20 发布日期:2018-12-11
  • 通讯作者: 王国华(1978-),男,讲师,博士.研究方向:新能源汽车能源高效利用与集成式热管理.E-mail:wanggh@jlu.edu.cn
  • 作者简介:王炎(1988-),女,博士研究生.研究方向:电池热安全技术与新能源汽车整车热管理.E-mail:wangyan2387@163.com
  • 基金资助:
    国家自然科学基金项目(51376079);吉林省产业创新专项项目(2016C022);长春市科技创新“双十工程”项目(17SS022);吉林省科技发展计划项目(20180520066JH)

Simulation of mixed inner air-flow integrated thermal management with temperature uniformity of Li-ion battery

WANG Yan1,2, GAO Qing1,2, WANG Guo-hua1,2, ZHANG Tian-shi1,2, YUAN Meng1   

  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
  • Received:2017-08-16 Online:2018-09-20 Published:2018-12-11

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摘要： 电池组内良好的温度一致性是保证电动汽车切实可靠运行的必备条件,为了强化换热,减小组内温度差异性,本文提出了在电池模组内加设风扇的混流集成式电池组热管理方案。通过仿真计算,分析对比了单一液流与集成式两种热管理方式电池的温降性和温均性,以温度相异系数和温度极差为标准,分析评价了风扇气动性强化和装配高度对电池组温均性的改善效果。仿真结果表明:随着风扇气动特性强化,组内温度一致性得到了有效改善,为了强化末端换热和改善液流板下置的传热延迟,风扇应优先装配在高位。本文提出的混流集成式电池热管理方案具有良好的温均增效性,利于保证电池寿命和电动汽车整车性能。

关键词: 车辆工程, 混流, 电池热管理, 风扇气动性, 装配高度

Abstract: Large temperature difference can deteriorate the reliable operation of electric vehicle and battery cycle life. So it is essential to improve the temperature uniformity of battery pack. To enhance the heat transfer and reduce the temperature difference in a battery pack, a mixed inner air-flow Integrated Thermal Management (ITM) method is proposed by employing a small size axial fan. The performance of temperature control and temperature uniformity of single liquid Thermal Management (TM) and mixed inner air-flow ITM are analyzed and compared by Computational Fluid Dynamics (CFD). Furthermore, simulation on the thermal characteristic synergy of the mixed inner air-flow ITM is conducted by altering the aerodynamic characteristics and the position of the fan. Results show that the proposed method can effectively improve the temperature uniformity, thus enhancing the battery cycle life and the total performance of electric vehicle.

Key words: vehicle engineering, mixed inner flow, battery thermal management, fan aerodynamic characteristics, assembly position

中图分类号: 

  • U469.72
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