大容量阀控铅酸蓄电池系统可靠性分析

随着电信用户的增多 ,要求程控交换机的容量越来越大 ,与之相配套 ,亦要求阀控式铅酸蓄电池的容量越来越大。就目前广泛采用的通过 10 0 0Ah电池并联来获得高容量电池系统的两种方法建立数学模型 ,并分别推导和计算了两种连接方式对大容量电池系统可靠性的影响。以单只电池可靠度 0 .9计算 ,可以看出 ,对于同样的电池系统 4 8V/ 90 0 0Ah ,串并联方案的电池系统可靠度为 0 .99999,远远大于并串联方案的电池系统可靠度 0 .52 68,故实际安装时 ,应考虑串并联电池系统 ,串并联可以保证电池系统的高可靠性。

Analysis of the reliability of high capacity VRLA battery system

With the development of Chinese telecommunication, the number of user increases explosively and the capacity of program-controlled exchanger is required to be larger and larger, thus high capacity battery system is required. Two connecting methods for providing high capacity battery systems by parallel connection were discussed. By setting up mathematical model and calculating, the results show that the series-parallel connection can provide higher reliability of battery system than parallel-series battery system do.