Sealed prismatic battery

Details Sealed prismatic battery Sealed prismatic battery

2004-11-18

2009-06-30

Rhee, Jane (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Sealed cell having gas prevention or elimation means

C429S061000, C429S088000, C429S163000, C429S175000, C429S185000

Reexamination Certificate

active

07553581

ABSTRACT:
A sealed prismatic battery is provided. The battery includes a battery casing4having a prismatic cylindrical shape of body with a bottom part and an upper opening, and a lid5which fits in the upper opening of the battery casing. The opening of the casing body4and the lid5have laterally long shape in which the back-and-forth width dimension is smaller than the lateral length. The outer periphery of the lid5being welded to the periphery of the upper opening of the battery casing4to form a welded portion. The welded portion includes a pair of fragile parts11having low weld strength and formed at the ends of two long sides10aand10bof the welded portion which are parallel to each other, respectively, The battery is appropriately prevented from exploding and strength of battery is sufficiently provided against an impact caused by fall or the like.

REFERENCES:
patent: 9-259842 (1997-10-01), None
patent: 2001-43845 (2001-02-01), None
patent: 2001-135358 (2001-05-01), None
patent: 2001-307705 (2001-11-01), None
patent: 2002-033091 (2002-01-01), None
patent: 2003-17029 (2003-01-01), None
patent: 2003-346742 (2003-12-01), None
patent: 2001-0047791 (2001-06-01), None

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