摘要
理想超级电容器模块原本应遵循其单体性能,但由于超级电容器不一致性的客观存在,使模块特性受限于最差单体,并将引起全储能系统加速老化,严重妨碍大规模储能领域的开发和应用,因此超级电容器的不一致性研究对大规模储能系统的安全可信、高效可用非常关键。该文阐述了现有超级电容器单体特性差异的成因及不一致性与老化的内在联系,分析了特征参数对储能模块使用的影响,给出了可用于评价超级电容器单体离散程度的参数,试验验证了标准充电与自放电工况下的单体特性差异,反映了离散程度随正常使用而不断劣化,根据不一致性研究现状展望了未来超级电容器值得深入探索的方向。
Ideal performance of an energy storage module should reflect the overall ability of its individual components. However, module performance would be limited by its worst cell and module ageing might be accelerated by supercapacitor＇s nonuniformity. This phenomenon severely impedes the development of large-scale energy storage. Therefore the research aiming at nonuniformity is of great importance to the effectiveness, safety and reliability of the large-scale energy storage system. The paper first reviews five possible causes of supercapacitor＇s nonuniformity and analyzes its internal relationship with ageing. The paper then states the nonuniformity influence on module emPloyment~ Next, the ~ .／ paper discusses the criteria used for supercapacitor＇s nonuniformity evaluation. After that, the results of experiments in paper show the characteristic difference between cells and also prove the growth of nonunifbrmity. Finally, by analyzing state-of-the-art, the paper predicts the research trends.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2015年第11期2862-2869,共8页
Proceedings of the CSEE
关键词
大规模储能
超级电容器
不一致性
健康状态
特征参数
寿命老化
large-scale energy storage
supercapacitor
nonuniformity
state of health
feature parameter
ageing
