摘要
阀控式密封铅酸蓄电池(VRLA)广泛应用于光伏发电系统中,为延长其使用寿命、降低光伏电能成本,同时提高光伏发电系统运行性能,对铅酸蓄电池的充电特性进行了分析,提出一种阶段恒流与脉冲充电相结合的五段式充电方法,这种方法能加快充电速度并有效延长蓄电池的使用寿命。对VRLA充电方法进行了仿真分析,结果表明该方法能够最大限度地提高蓄电池充电效率,从而提高了光伏系统的工作效率,实现系统的优化运行。由于该方法充分考虑了蓄电池内部电化学反应特性,可以消除极板极化现象,所以蓄电池的使用寿命可以延长。
The valve regulated lead-acid battery（VRLA） is the most popular element of energy storage in solar systems due to its low cost and ease of availability.The battery life is usually shortened using in photovoltaic systems.To extend the life of the battery,reduce the cost of photovoltaic power generation systems,and improve the efficiency of the system,the charging characteristics of lead-acid batteries was analyzed,a five-stage charging method was presented,which comprised of a constant current combined with pulse charging,which could speed up the charging speed and effectively extend the battery life.The simulation results show that the suggested method can raise the charging efficiency,and then,PV system achieves optimal operation as well as improving the efficiency of the system.Owing to the fully consideration of the electrochemical reaction within the battery,this method can eliminate the polarization to extend battery life.
出处
《电源技术》
CAS
CSCD
北大核心
2012年第10期1496-1499,共4页
Chinese Journal of Power Sources
基金
国家科技支撑计划项目(2011BAA07B02)
国家自然科学基金资助项目(51177047)
关键词
阀控式密封铅酸蓄电池
涓流充电
脉冲充电
极化
valve regulated lead-acid（VRLA）
trickle charge
pulse charge
polarization
