中国电机工程学报2016，Vol.36Issue(17)：4762-4769,8.DOI:10.13334/j.0258-8013.pcsee.151615
卷绕式超级电容器封装单元结构对其热行为影响的研究
Study on Thermal Behavior Influences of Spiral Wound Supercapacitors With Package Units Structure
摘要
Abstract
Supercapacitors will generate heat effects in the process of charging and discharging, which will make temperature rise sharply in a short time, thus will affect the electrical performances. There are three main factors affecting supercapacitors' heat generation rate, including structure, material and operating condition. In terms of structural characteristics, the influence of the package units' structure on its thermal behavior was studied in the paper. An electrochemical model of supercapacitors was established and controlled by ohm's law, charge conservation, mass conservation and the joule heat generation rate. Then a thermal model was established, and the coupling of thermology and electrochemistry was achieved. For the convenience of research, the concept of limited cycle numbers was defined, which is the number of cycles when the supercapacitor reaches the limited temperature (allowable maximum temperature) 343.15K during charge and discharge processes in circulation. By using the finite element method, the thermal behavior of supercapacitors with different structures (including: the number of package units and the size of a cell) under cyclic charge and discharge was simulated to study the limited cycle numbers they can bear, which provides a new idea for a supercapacitor's optimization design. The simulation results show that the number of package units and the size of cells have little effects on the temperature field under high currents, even considering the ambient temperature. However, they have a great effect when the current is small: as the ambient temperature increases, the effect gets greater.关键词
卷绕式超级电容器/封装单元结构/电化学-热耦合/有限元法/热行为/极限循环次数/优化设计Key words
a spiral wound supercapacitor/the package units' structure/coupling of thermology and electrochemistry/the finite element method/thermal behavior/limited cycle numbers/optimization design分类
信息技术与安全科学引用本文复制引用
李岩松,郑美娜,石云飞,刘君..卷绕式超级电容器封装单元结构对其热行为影响的研究[J].中国电机工程学报,2016,36(17):4762-4769,8.基金项目
国家自然科学基金项目(51277066)。Project Supported by National Natural Science Foundation of China (51277066) （51277066）
