| 摘要 |
PURPOSE:To increase the recovery performance of a battery discharged and allowed to stand at high temperature by forming a specific alloy layer on both sides of the base material sheet made of a specific leadcalcium base alloy, and forming a grid with the sheet to use for a plate. CONSTITUTION:A base material sheet is made of 0.03-0.15 wt% calcium, 0-1.0 wt% tin, and the remainder lead. A lead-silver base alloy layer comprising 0.01-2.0 wt% silver, 0-10 wt% tin, and the remainder lead is formed on one side of the base material and a lead-tin alloy layer containing 1-30 wt% tin is formed on the other side. The three layer alloy sheet is formed in a grid by expanding process, and the grid is filled with an active material to form a positive plate. A battery using this positive plate can be charged at the maximum current even after it is discharged and allowed to stand at high temperature. |
