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US 6,274,264 B1Granted
Cell current cutoff mechanism
AssigneeAlps Electric Co., Ltd.
InventorTadamitsu Azema
Life of this patent
Estimating the term…
Abstract
In a current cutoff mechanism of a cell according to the present invention, a convex portion of the diaphragm is press-fitted into a fitted part, a conductive path is formed between a cell lid and a generating element inside the cell via the diaphragm and an internal electrode and when internal pressure in a cell case exceeds a predetermined value and the diaphragm is displaced, the convex portion of the diaphragm is pulled out from the fitted part and the conductive path is cut off.
Claims4
A current cutoff mechanism of a cell, comprising:
- a cell case in which a generating element is housed;
- a cell lid for airtightly shielding the cell case;
- a diaphragm connected to the cell lid, displaced according to the internal pressure of said cell case and provided with a convex portion in a part;
- and
- an internal electrode provided with a fitted part for fitting said convex portion of the diaphragm at the base, wherein:
- said convex portion of said diaphragm is press-fitted into said fitted part;
- a conductive path is formed between said cell lid and said generating element via said diaphragm and said internal electrode;
- and
- when the internal pressure of said cell case increases and said diaphragm is displaced, said convex portion of said diaphragm is pulled out from said fitted part and said conductive path is cut off.
6 more elements
Dependencies are inferred from the claim text.