小型vrla电池分段恒流充电特性的研究.pdf

VRLA VRLA 陈静瑾 ( 西安理工大学 自动化学院, 陕西 西安710048) : 通过对电动自行车用小型阀控铅酸蓄电池 ( 后称VRLA 电池) 性的分析, 研究了一种新 的充电方式 分段恒流充电方式通过对首段充电电流及充电电流段数进行的研究, 结果表 明: 采用首段05C 电流充电, 四段或五段恒流充电, 可使充电时间缩短到小于150 min , 同时电 池的循环寿命达到大于250 次, 与 恒流 恒压 浮充! 及 恒流 恒流 恒压! 充电方式比 较, 分段恒流充电方式不仅充电时间短循环寿命长而且电池温升低失水少对电池性能衰 减机理的研究表明: 采用分段恒流充电能抑制VRLA 电池正极板活性物质的软化和负极板活性物 质的硫酸盐化 : 阀控铅酸蓄电池 ( VRLA 电池) ; 分段恒流充电方式; 恒流 恒压 浮充! 充电方式; 恒流 恒流 恒压! 充电方式; 循环寿命 :TM9124 :A : 1006- 0847( 2004) - 02- 0074- 03 Study on the multistage constant current charging method for smallsized VRLA batteries CHEN Jing- in (X ian University fo Technology , X ian Shanx i 710048, China) Abstract : A new method of mult istage constant charge for valveregulated leadacid (VRLA) battery system for electric bicycle has been studied in this paper . In this method, the firststage charging current magnitude and the number of stage for charging current were researched. The results show that if the battery is charged at 05 C for the first stage and at const ant current for the fourth and fifth stage, then it can be fully charged in less than 150 min, and cycle life can reach 250 cycles. Compare to the constant currentconstant voltage floatingconstant currentconstant currentconstant voltage and the multistage constant current charging method , the later method can shorten charging time, reduce temperature raising, lessen water losing, and longer cycle life. The invest igat ion of degradation mechanism of VRLA batteries revea