储能科学与技术 ›› 2017, Vol. 6 ›› Issue (6): 1295-.doi: 10.12028/j.issn.2095-4239.2017.0078

• 特约文章 • 上一篇    下一篇

车载锂离子电池组的热管理模拟

侯大鹏1，杨  轲2，李兰清1，安  越1   

  1. 1浙江大学化学工程与生物工程学院，浙江 杭州 310027；2上海交通大学化学工程系，上海电化学能源器件工程技术研究中心，上海 200240
  • 收稿日期:2017-05-30 修回日期:2017-06-30 出版日期:2017-11-01 发布日期:2017-11-01
  • 通讯作者: 安越，副教授，主要研究方向为储氢技术、催化技术，E-mail：anyue@zju.edu.cn。
  • 作者简介:侯大鹏（1991—），男，硕士研究生，研究方向为锂离子电池仿真模拟，E-mail：HDP19092980@163.com

Thermal simulation and management of the lithium-ion battery pack

HOU Dapeng1, YANG Ke2, LI Lanqing1, AN Yue1   

  1. 1College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China; 2Shanghai Electrochemical Engery Devices Research Center, Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2017-05-30 Revised:2017-06-30 Online:2017-11-01 Published:2017-11-01

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摘要： 为解决电动汽车锂离子电池组工作过程中散热不均匀的问题，对其进行热模拟仿真并优化管理。首先，对锂离子电池工作时的生热与传热机理进行了研究，并对方形锂离子电池建立了三维热模型。其次，对单体电池工作过程中的温度分布与变化曲线进行了模拟，对比实际工作时电池表面温度修正了模型。最后，将已修正的模型应用于电池组中，模拟其工作过程中的温度分布与变化，并优化电池组结构，添加强制冷却装置以降低电池组工作温度。经模拟优化知，在环境温度20 ℃时，当冷却风入口面积为6倍单电池侧面面积，冷却风量为1 kg/s时，对电池组冷却效果较好，且更经济。

关键词: 热模型, 单电池模拟, 电池组模拟

Abstract:

In order to solve problem about heat dissipation during the process of the Li-ion batterys in electric vehicle, we made simulation and optimized the thermal management of battery pack. Firstly, research was done on the heat generating mechanism and the heat transfer mechanism of Li-ion cell and a three-dimensional thermal model for battery was established. Secondly, the temperature distribution and temperature curve of the cell are simulated. Then the surface temperature during the working process was compared the thermal model was modified. Finally, the modified model was applied to a battery pack to simulate the temperature distribution, then forced cooling equipment on battery pack was added to reduce the temperature of the cells in the pack and the pack structure was optimized. According to the simulation results we found when the ambient temperature is 20℃and the cooling air inlet area is 6 times the area of a single cell profile area and the mass flow of cooling air is 1 kg·s1, the cooling effect is better and more economical.

Key words: the thermal model, single battery simulation, battery pack simulation