摘要
考察了不同电流下对电堆库仑效率、能量效率的影响:充放电电流越大,库仑效率、能量效率呈先增大后减小的趋势;考察了电堆充放电过程中单电池的特性,结果显示电堆中单电池的一致性较差;考察了5 kW系统的效率特性,由于双向变流器功率与电堆功率不匹配,导致整个系统的效率不高。电堆自放电结果显示:电池自放电17 h,电压已降低到平台以下,Nafion117的阻钒特性有待提高。
Abstract：The effect of different current on the columbic efficiency and the energy efficiency of the vanadium redox battery was investigated. The columbic efficiency and energy efficiency increased first and then decreased with the increase of the current. The performance of the single battery was investigated. The results show weak consistency. The efficiency performance of the 5 kW energy storage system was investigated.The system show low efficiency because the power level of the PCS cannot match the power level of the battery.In the course of 17 h self-dischar- ge,the voltage dropped under the voltage platform.The vanadium permeability of Nafion117 needs to be improved.
出处
《电源技术》
CAS
CSCD
北大核心
2013年第11期1972-1973,1977,共3页
Chinese Journal of Power Sources
关键词
全钒液流电池
系统
性能
效率
vanadium redox battery
system
performance
efficiency
