Sealed battery having an electrode substrate exposed portion...

Details Sealed battery having an electrode substrate exposed portion... Sealed battery having an electrode substrate exposed portion...

2005-06-21

2005-06-21

Cantelmo, Gregg (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Plural concentric or single coiled electrode

C429S164000, C429S169000

Reexamination Certificate

active

06908703

ABSTRACT:
A sealed battery has an outer can having an opening and functioning as an electrode terminal, a sealing member fitted in the opening of the outer can and functioning as an electrode terminal which is different in polarity from the outer can, and a spiral-wound electrode assembly contained in the outer can. The spiral-wound electrode assembly includes a positive electrode, a negative electrode and a separator wound together spirally, in which the electrodes are separated by the separator and the outermost coil of the separator forms the outer circumferential face of the spiral-wound electrode assembly. A substrate included in the positive or negative electrode which is adjacent to the outermost coil of the separator has an exposed portion, which projects in the axial direction of the spiral-wound electrode assembly beyond the outermost coil of the separator and is in direct contact with the inner face of the outer can.

REFERENCES:
patent: 5208122 (1993-05-01), Hirakawa et al.
patent: 5281495 (1994-01-01), Hirakawa et al.
patent: 5912091 (1999-06-01), Daio et al.
patent: 5958620 (1999-09-01), Nagaura
patent: 6391488 (2002-05-01), Shimizu et al.
patent: 2001085066 (2001-03-01), None

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