Patent ID: 6385829
Filing Date: 2002-05-14
Classification: H01M,Y02E,Y10T

Abstract:
A manufacturing method of a lead-acid battery electrode plate, comprising the steps of:consecutively supplying a lead or lead alloy sheet; leaving a portion in the vicinity of a center of the sheet as a non-expansion portion and expanding both sides like mesh to form a grid body, so that the non-expansion portion forms a current collector part of the electrode plate along an expansion portion in an up and down direction of the electrode plate; making one or more openings in a portion of the non-expansion portion; filling active material paste into the grid body; and cutting the grid body to predetermined dimensions; wherein a portion of the non-expansion portion is projected above a position of an upper margin of a cut expansion portion as a current collector lug part; and when the current collector lug part is placed upside, an expansion direction is a width direction of the electrode plate.