软包锂离子电容器放电过程热模拟

doi:10.12028/j.issn.2095-4239.2019.0066

储能科学与技术 ›› 2019, Vol. 8 ›› Issue (5): 922-929.doi: 10.12028/j.issn.2095-4239.2019.0066

软包锂离子电容器放电过程热模拟

张耀升^1,2, 刘志恩¹, 孙现众^2,3, 安亚斌², 张熊^2,3, 马衍伟^2,3

1 武汉理工大学汽车工程学院, 湖北武汉 430070;
2 中国科学院电工研究所应用超导重点实验室, 北京 100190;
3 中国科学院大学, 北京 100049

收稿日期:2019-04-23 修回日期:2019-04-28 出版日期:2019-09-01 发布日期:2019-05-17
通讯作者: 孙现众,副研究员,研究方向为超级电容器储能技术,E-mail:xzsun@mail.iee.ac.cn;马衍伟,研究员,研究方向为超导与能源新材料及器件,E-mail:ywma@mail.iee.ac.cn。
作者简介:张耀升(1994-),男,硕士研究生,研究方向为锂离子电容器的热管理,E-mail:zhangyaosheng@mail.iee.ac.cn
基金资助:
国家自然科学基金项目（51721005），中国科学院战略重点研究计划（XDA21050302）和北京市科学技术委员会资助项目（Z171100000917007）。

Thermal simulation for lithium-ion capacitor during discharge process

ZHANG Yaosheng^1,2, LIU Zhien¹, SUN Xianzhong^2,3, AN Yabin², ZHANG Xiong^2,3, MA Yanwei^2,3

1 School of Automotive Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China;
2 Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China;
3 University of Chinese Academy of Sciences, Beijing 100049, China

Received:2019-04-23 Revised:2019-04-28 Online:2019-09-01 Published:2019-05-17

摘要/Abstract

摘要： 作为一种新型的电化学储能装置，锂离子电容器的热性能尚未得到重视，因此研究锂离子电容器在放电过程的温度场分布具有重要意义。通过建立三维有限元模型，利用workbench有限元软件对不同环境温度与不同放电倍率下软包锂离子电容器放电过程的温度场进行模拟研究。结果表明，在放电过程中温度逐渐升高且最高温度出现在电芯的中心区域，放电倍率越高温升越大；锂离子电容器单体的内部温差受外部环境温度影响较小。通过与实验结果进行对比验证，表明此生热模型能较好地反映锂离子电容器在实际放电过程中的温升情况，有助于其性能优化和结构设计。

关键词: 锂离子电容器, 温度场, 热模拟, 环境温度, 放电倍率

Abstract: The thermal behaviors of lithium-ion capacitor, as a new kind of electrochemical energy devices, have not yet attracted sufficient attentions so far. Therefore, it is significant to study the temperature distribution of lithium-ion capacitor under various conditions. In this paper, the threedimensional finite element model was established and a finite element software Workbench was employed to simulate temperature distribution at different ambient temperatures and discharge rates. The results show that the temperature of capacitor increases gradually with the discharge process going on and the highest temperature appears in the center of cell. Meanwhile, the internal temperature difference are less affected by ambient temperature. More importantly, the comparison between the simulation and experimental results shows that the heat generation model can reflect the temperature variation of the lithium ion capacitor very well during the discharge process, which is helpful to the performance optimization and structure design of lithium ion capacitors.

Key words: lithium ion capacitors, temperature distribution, thermal simulation, ambient temperature, discharge rate

中图分类号:

TM53

张耀升, 刘志恩, 孙现众, 安亚斌, 张熊, 马衍伟. 软包锂离子电容器放电过程热模拟[J]. 储能科学与技术, 2019, 8(5): 922-929.

ZHANG Yaosheng, LIU Zhien, SUN Xianzhong, AN Yabin, ZHANG Xiong, MA Yanwei. Thermal simulation for lithium-ion capacitor during discharge process[J]. Energy Storage Science and Technology, 2019, 8(5): 922-929.

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软包锂离子电容器放电过程热模拟

Thermal simulation for lithium-ion capacitor during discharge process

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