Patent ID: 6440180
Filing Date: 2002-08-27
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
A manufacturing method of an enclosed storage battery comprising the steps of:(a) placing a plate group in a jar having an opening, (b) injecting electrolyte into said jar, (c) connecting a pole to said plate group, said pole having a leading end, wherein a recess is located on said leading end of said pole, (d) placing a terminal and a lid having a bushing electrically conducting with said terminal so as to cover said opening, said bushing having a portion defining a penetration hole with an inner wall, (e) inserting said pole from inside of said jar into said penetration hole of said bushing, said inner wall encompassing the conductive pole, positioning the leading end of the pole at a position below the upper periphery of the portion of said bushing defining the penetration hole, and (f) integrating said pole and said bushing by the steps of first (1) melting part of said pole, and joining said pole and said bushing by a second fused matter formed by melting a part of said pole, the second fused matter positioned between said hole and the inner wall, and then (2) melting an annular bump located on the upper periphery of said penetration hole of said bushing, and joining said pole and said bushing by a first fused matter formed by melting of said annular bump, said first fused matter formed at the leading end of the pole.