Patent ID: 6165637
Filing Date: 2000-12-26
Classification: H01M

Abstract:
A current path cut-off mechanism in a cell, comprising:a cell case which houses a power generating element therein,a cell lid to shield an interior of said cell case in a hermetically sealed manner;a diaphragm portion formed in part of said cell lid and capable of being displaced upward in response to a change in internal pressure of said cell case;an internal terminal connected to said power generating element and having a bonding portion bonded to said diaphragm portion approximately centrally; andan insulating member to insulate said internal terminal and said cell lid from said power generating element,wherein a current path is formed between said cell lid and said power generating element through said diaphragm portion and said internal terminal, a part of said internal terminal is embedded in said insulating member, said bonding portion is exposed from said insulating member to be flush with a surface of said insulating member on a side of said diaphragm portion, and a metallic plate is additionally embedded in said insulating member by insert molding to said cell lid, and has a welded portion welded to said cell lid.