通信用密封铅蓄电池组在线诊断技术

通信电源系统中的阀控密封铅蓄电池组是长期处于浮充状态之下工作的。由于它是渐变失效产品，所以蓄电池组中各块电池的浮充电压高低和均匀性以及浮充电流的大小和变化趋势，可以为在线评估蓄电池组的健康状况提供重要的信息。统计结果表明，一旦出现浮充电压的均匀性开始变差和浮充电流持续增大，则蓄电池组的使用寿命只剩下约1／3了。

On-Line Diagnostic Technique for VRLA

VRLA group used in communication power sources was operated under conditions of floating charge for a long period of time .Because it was tapered failure,the high-low values and uniformity of floating voltage ,and the large-small values and tendency of floating current for all of single cells in the battery group could provide the important informatiom about the state-of-heath of battery group .Statistical results had showed that the remainder service life of this VRLA group would only be 1/3 of the over all,as soon as the uniformity of floating voltage became worse and the floating current became larger and larger.