CIESC Journal ›› 2016, Vol. 67 ›› Issue (4): 1207-1214.DOI: 10.11949/j.issn.0438-1157.20151075

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Temperature characteristic of electric double layer capacitor under galvanostatic cycling

ZHANG Xinglei1, WANG Wen1, HUA Li2, HENG Jianpo2   

  1. 1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
    2. Shanghai Aowei Technology Development Co., Ltd., Shanghai 201203, China
  • Received:2015-07-06 Revised:2015-08-27 Online:2016-04-05 Published:2016-04-05
  • Supported by:

    supported by the National High Technology Research and Development Program of China (2011AA11A233).

恒流充放电过程中双电层电容器温度特性

张兴磊1, 王文1, 华黎2, 衡建坡2   

  1. 1. 上海交通大学机械与动力工程学院, 上海 200240;
    2. 上海奥威科技开发有限公司, 上海 201203
  • 通讯作者: 王文
  • 基金资助:

    国家高技术研究发展计划项目(2011AA11A233)。

Abstract:

Temperature characteristic is one of the important properties for an electric double layer capacitor (EDLC), and the reversible and irreversible heat are combined with the charging and discharging for an EDLC. In this study, the numerical simulation of heat transfer, conducted with the finite element technology, and temperature measurement inside and outside EDLC were performed during galvanostatic cycling with different current densities. The heat transfer characteristics and temperature distribution were analyzed by the comparison between the simulated and measured temperatures. And then, the variation and the influencing factors of reversible heat and temperature oscillation during galvanostatic cycling were discussed. Meanwhile, the EDLCs need to be cooled during charging and discharging cycles with great current according to the measured results.

Key words: electric double layer capacitor, temperature characteristics, heat transfer, numerical simulation, measurement, reversible heat

摘要:

温度特性是双电层电容器的重要特性之一,在电容器充放电过程中伴随着可逆热和不可逆热的产生。利用有限元技术对双电层电容器在恒流充放电循环过程中的内部及外部传热进行数值模拟。同时,对一个双电层电容器样品在循环过程中的内部及外部温度变化进行了测量。对数值模拟结果和实验数据进行对比,分析了恒流充放电循环过程中双电层电容器内部和外部的传热特性、温度分布及其发展变化,讨论了循环过程中电容器可逆热的变化规律及其影响因素,以及由可逆热引起的温度波动的变化。另外,实验数据表明,超级电容器在大电流充放电过程中需要进行冷却。

关键词: 双电层电容器, 温度特性, 传热, 数值模拟, 测量, 可逆热

CLC Number: