Patent ID: 6228523
Filing Date: 2001-05-08
Classification: H01M,Y02E

Abstract:
A current path cut-off component of a cell, comprising:a cell case containing a power generating element;a cell lid for closing said cell case in a hermetically sealed state;a diaphragm portion formed by swelling a thin-walled portion of said cell lid inwards of said cell case,;a lead connected to said power generating element and bonded to a substantially central part of said diaphragm portion; anda fixing member for fixing said lead in the interior of said cell case in the bonded state of the lead to said diaphragm portion,wherein a current path is formed between said cell lid and said power generating element through said diaphragm portion and said lead, the diaphragm portion displaces itself upon an increase in internal pressure of said cell case above a predetermined value, and said displacement of the diaphragm portion causes the diaphragm portion and the lead to be disconnected from each other to cut off said current path.