硫酸浓度变化对铅酸蓄电池极板电流电位的影响  

Effects of Sulfuric Acid Concentration Change on Current-Potential Distribution of Lead-acid Battery

作　　者：刘慧勇[1] 王钦建[2] 

机构地区：[1]福州大学化学化工学院,福州350108 [2]福建省废物管理中心,福州350003

出　　处：《中国资源综合利用》2008年第10期6-9,共4页China Resources Comprehensive Utilization

摘　　要：铅酸蓄电池在使用过程中硫酸浓度会变化不均,底部浓度高于顶部浓度。由此设计并联的两个不同浓度电池,模拟电池的顶部与底部,研究充放电过程中极板的电流与电位分布。研究结果表明,在恒流5A限压充电初期,高浓度的电池充电电流与低浓度电池相接近,约为2.5A;充电后期,高浓度电池的正、负极板电位均高于低浓度电池的极板电位约30mV,高浓度电池的充电电流高于低浓度电池的充电电流。恒流放电初期高浓度电池优先放电,放电后期,尽管两电池的正极板电位趋于一致,但高浓度电池的负极电位比低浓度电池的负极电位高20mV。The concentration of sulfuric acid would be change during charge and discharge in lead-acid battery. The experiment indicated that the concentration of sulfuric acid on lower part was higher than that on upper part. In order to investigate the distribution of current and potential of plate in charge-discharge process, tow paralleled ceils with different concentration were used to simulate the upper and the lower part in a single cell. The results indicated that during charging of 5 A, the charge current of cell with more concentrated acid was about 2.5 A,which was the same as the cell with less concentrated acid. At the end of charge, the potential on positive and negative plates of the cell with more concentrated acid were higher about 30 mV than that with less concentrated acid, and the charge current of the cell with more concentrated acid were also higher than that with less concentrated acid. During initial discharging stage, the cell with more concentrated acid was prior to discharge. In the last stage, the potential of the cell with more concentrated acid were higher about 20 mV than that with less concentrated acid, although the potential of the two cell was the same.

关 键 词：硫酸浓度 极板电位 

分 类 号：TM912.1[电气工程—电力电子与电力传动]