VRLA蓄电池技术

本文就板栅合金、和膏方程、装配压力、快速充电等方面阐述VRLA蓄电池技术。当Pb—Ca合金中锡含量超过0.6％时才可能从循环伏安图观察到锡的阳极溶解,才能起克服早期容量损失的作用。通过加酸量改变铅膏密度,然后再通过和膏方程确定加水量。在和膏后期补水调整铅膏密度是不可取的操作。考虑电池充放电过程极板厚度增加将引起装配压力增大,建议初始装配压力设定在40kg/dm~2。我们首次建立变电流间歇充电方法,它是一种快速充电方法。对于完全放电态电池只需充电时间190min,则可得92％放电容量。

Techniques for VRLA Batteries

Techniques for VRLA batteries such as grid alloy paste-mixing equation .assembling pressure and rapid charge were explained. Only when Sn content in Pb-Ca alloy was more than 0.6wt% ,its anodic dissolution of Sn could been observed from cyclic voltammogram and had effect to eliminate the premature capacity loss. The wet-paste density was changed by the amount of sulfuric acid and the amount of water in the oxide. It was determined by the paste-mixing equation. Adjusting wet - paste density by adding water towards the end of the mixing was bad operation. Initial assembling pressure was suggested at 40kg/dm2 because assembling pressure would be increased by increment of electrode thickness in the process of charge and discharge. The interrupt charge with variable current had been firstly established. This was a rapid charge method. Charge time was only 190 minutes for the discharged battery and the discharge capacity of 92% could be obtained.