| 摘要 |
PURPOSE:To provide a manufacturing method for a plate for a lead-acid battery capable of preventing a deformation at a lug part of the plate and a crack at a boundary portion between a grid portion, in which an active substance for the plate is filled, and a frame bone of the plate so as to prevent fallout of the active substance from the plate in the preparation of a unit plate by means of press working. CONSTITUTION:A manufacturing method for a plate comprising the next step: When unit plates are punched from a multi-feed electrode plate by means of press working, the thickness of a connecting blank portion is formed in such a manner that it is thinner than the thickness of the plate frame bone 2 and grid portion 1, the blank portion 3 is punched by means of press working so as to form lug parts 7 after an active substance is filled in the grid portions 1. Accordingly, the press pressure required for preparing unit pole plates can be reduced, so that deformation at the lug parts 7 and cracks at the boundary portion between grid portions 1, in which an active substance is filled, and a frame bone 2 can be prevented, resulting in the suppression of fallout of the active substance from the plate. |
