Sealed battery

Details Sealed battery Sealed battery

2007-01-19

2009-11-17

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Cell enclosure structure, e.g., housing, casing, container,...

C429S174000, C429S181000

Reexamination Certificate

active

07618745

ABSTRACT:
A sealed battery according to the present invention includes a sealing body18A having a terminal cap19′ made of an iron-based material and a safety valve25made of an aluminum-based material. In the sealing body18A, at least one of the flange of the terminal cap19′ and the flange of the safety valve25has a portion defining a space30. The flanges of the terminal cap and of the safety valve are welded at a position corresponding to the space with high-energy rays. It is thus possible to provide the sealed battery including the sealing body having a current interrupt function in which resistance between the terminal cap and the safety valve is kept low, thereby being suitable for large-current applications.

REFERENCES:
patent: 4000952 (1977-01-01), Bryan et al.
patent: 2006/0275657 (2006-12-01), Kozuki et al.
patent: 2000-90892 (2000-03-01), None
patent: 2001-15155 (2001-01-01), None
patent: 2004-296363 (2004-10-01), None
patent: 2005-276458 (2005-10-01), None

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