基于Fluent的超级电容器模组充放电循环的热仿真分析  

Thermal simulation analysis of a supercapacitor module charge-discharge cycle based on the Fluent software

作　　者：李向东 廉睿 吴佳美 唐良辉 乔志军 阮殿波 LI Xiangdong;LIAN Rui;WU Jiamei;TANG Lianghui;QIAO Zhijun;RUAN Dianbo(Ningbo CRRC New Energy Technology Co.Ltd.,Ningbo 315111,Zhejiang,China;Institute of Advanced Energy Storage Technology and Equipment,Ningbo University,Ningbo 315112,Zhejiang,China)

机构地区：[1]宁波中车新能源科技有限公司,浙江宁波315111 [2]宁波大学,先进储能技术与装备研究院,浙江宁波315212

出　　处：《储能科学与技术》2021年第2期732-737,共6页Energy Storage Science and Technology

基　　金：国家重点研发计划(2017YFB1201005-09);宁波市“2025”重大专项(2019B10109);宁波市“2025”重大专项(2019B10045)。

摘　　要：用于储能的超级电容器在充、放电过程中,由于内部存在电阻而发热,使得电容内部温度升高。超级电容器内部温度过高会导致电容性能恶化、循环寿命缩短等,甚至电解液会蒸发而损坏超级电容器。基于Fluent软件,本文对超级电容器模组充、放电过程(单串40 A充/519.5 A放电)进行仿真计算,在25℃环境下自然冷却获得超级电容器内部、超级电容器端子与铝排焊接点、铝排及整个模组的温度分布情况。建立超级电容器模组生热模型,模拟循环工况下超级电容器模组的生热量和生热速率,为超级电容器模组热管理系统的研究提供依据。During charging and discharging, a supercapacitor used for energy storage generates heat owing to internal resistance, which increases the internal temperature of the capacitor. If temperature inside a supercapacitor is very high, the capacitor’s performance deteriorates, cycle life reduces, and electrolyte evaporates and damages the capacitor. This study simulates the charging and discharging processes of a supercapacitor module(single series 40 A charge/519.5 A discharge) and obtains temperature distribution inside the capacitor and the welding point between the supercapacitor terminal and aluminum bar and between the aluminum bar and whole module under natural cooling at 25 ℃ using Fluent. A heat generation model of the supercapacitor module is established to simulate its heat generation and heat generation rate under cycle conditions, which provides a basis for research on thermal management systems of supercapacitor modules.

关 键 词：超级电容器 循环工况 仿真 热管理 

分 类 号：TB21[一般工业技术—工程设计测绘]