| 摘要 |
PURPOSE:To suppress the breakdown of active material particles, increase life of a lead-acid battery, and increase utilization of an active material by bringing a plate before formation into contact with a metal complex forming solution, then charging it in a dilute sulfuric acid solution. CONSTITUTION:A plate before formation is brought into contact with a metal complex forming solution, then charged in a dilute sulfuric acid solution. For example, a paste type plate before formation prepared by coating a lead alloy grid with a paste by a conventional method, drying, and aging is accommodated into a container with a separator. 10g/l disodium ethylenediaminetetraacetate solution as a complex forming agent is poured in the container until the plates sink, then they are allowed to stand for one hour, or after pouring, a battery is charged at a current of 5hr rate for one hour. The solution poured in the container is removed, then a dilute sulfuric acid is poured, or with a part of solution is left in the container, a dilute sulfuric acid solution is poured. After that, a battery is charged for formation at a current of 5hr rate for 30hr. |
