Rechargeable battery with jelly roll type electrode assembly

Details Rechargeable battery with jelly roll type electrode assembly Rechargeable battery with jelly roll type electrode assembly

2005-09-23

2008-11-18

Cantelmo, Gregg (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Plural concentric or single coiled electrode

C429S161000, C429S178000, C429S179000, C429S211000

Reexamination Certificate

active

07452627

ABSTRACT:
A rechargeable battery that comprises a jelly roll type electrode assembly that comprises two electrodes with different polarities and separators for preventing an electrical short between the two electrodes is disclosed. The battery further comprises a case for storing the electrode assembly and electrode tabs that are made of different materials for connecting the two electrodes of the electrode assembly to an external circuit via the case, wherein the thicknesses of the electrode tabs are different. It is possible to reduce the thickness of a protruded part in an outer surface of the jelly roll due to the thinner electrode tabs and to reduce pressure on the activation materials near the protruded part.

REFERENCES:
patent: 5925482 (1999-07-01), Yamashita
patent: 2003/0054241 (2003-03-01), Yamashita et al.
patent: 2004/0126656 (2004-07-01), Cho
patent: 02000277093 (2000-06-01), None
“Tensile strength” from Wikipedia (http://en.wikipedia.org/wiki/Tensile—strength).

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