Secondary battery with enhanced ability to prevent leakage

Details Secondary battery with enhanced ability to prevent leakage Secondary battery with enhanced ability to prevent leakage

2011-01-18

2011-01-18

Hodge, R. (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

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

C429S174000, C429S175000, C429S176000

Reexamination Certificate

active

07871725

ABSTRACT:
A secondary battery includes a can having an interior space, an electrode assembly provided in the interior space of the can, and a cap assembly seated on an opening formed in the can to seal the can and electrically connected to the electrode assembly. The cap assembly includes a cap plate connected to the opening to seal the can; a tab plate mounted to one side of the cap plate and connected to the electrode assembly; an insulating plate interposed between the cap plate and the tab plate; an electrode pin passing through the cap plate, the tab plate, and the insulating plate to interconnect these elements; and an insulating gasket interposed between the cap plate and the electrode pin. Also, the electrode pin includes a head portion mounted to one side of the cap plate and formed in multiple stages in an area contacting the insulating gasket; and a column extending from the head portion and passing through the insulating gasket, the cap plate, the insulating plate, and the cap plate.

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Official English Translation of WO 02/01658.
The Letters Patent issued by the Chinese Patent Office on Oct. 13, 2010 for the corresponding Chinese Patent Application No. 03108519.9 with English translation.

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