Electrochemical element

Details Electrochemical element Electrochemical element

2005-06-13

2010-06-29

Yuan, Dah-Wei D (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

C429S211000, C429S233000, C429S209000

Reexamination Certificate

active

07745041

ABSTRACT:
Positive and negative electrodes include exposed current collector portions at both lengthwise ends, and these exposed current collector portions are bent such as to protrude from the widthwise edge of the electrodes to form welding pieces. The positive and negative electrodes and a separator interposed therebetween are wound around into a flat shape having an ellipsoidal cross section. The welding pieces of the positive and negative electrodes protruding from opposite sides of the wound electrodes are welded together with respective leads. According to this configuration, a simple but high-quality current collector design capable of stable electrical connection in a high power output prismatic electrochemical element is provided.

REFERENCES:
patent: 2004/0058244 (2004-03-01), Hosoya et al.
patent: 2004/0061476 (2004-04-01), Nakamaru et al.
patent: 2004/0096733 (2004-05-01), Shibamoto et al.
patent: 2005/0058908 (2005-03-01), Imachi et al.
patent: 2598160 (2004-01-01), None
patent: 9-180761 (1997-07-01), None
patent: 10-050556 (1998-02-01), None
patent: 11-135101 (1999-05-01), None
patent: 2000-040501 (2000-02-01), None
patent: 2000-294222 (2000-10-01), None
English machine translation of JP 11-135101.
English language Abstract of JP 11-135101.
English language Abstract of JP 9-180761.
English language Abstract of CN 2598160.
English Language Abstract of JP 2000-294222.
English Language Abstract of JP 2000-040501.
English Language Abstract of JP 10-050556.
U.S. Appl. No. 11/150,123 to Kozuki, filed Jun. 2, 2005.

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