Cylindrical alkaline storage battery

Details Cylindrical alkaline storage battery Cylindrical alkaline storage battery

2004-08-03

2008-10-07

Yuan, Dah-Wei (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S241000

Reexamination Certificate

active

07432018

ABSTRACT:
A cylindrical alkaline storage battery suitable to increase its capacity and arranged to prevent a short circuit and internal resistance increase, including an electrode group held in an outer can and formed by rolling up together a negative electrode having a negative-electrode core body and a hydrogen-absorbing alloy layer supported thereon, a positive electrode, and a separator. The negative electrode includes a main part forming inside part of the electrode group, a thin part smaller than the main part in the thickness of the hydrogen-absorbing alloy layer and the amount of a hydrogen-absorbing alloy contained in unit volume of that layer, and a boundary part formed between the main and thin parts and having a hydrogen-absorbing alloy layer thickness varying along the length of the negative-electrode core body. The positive electrode outer end and the negative electrode boundary part are at different positions circumferentially of the electrode group.

REFERENCES:
patent: 5683834 (1997-11-01), Fujimoto et al.
patent: 6051333 (2000-04-01), Nagai et al.
patent: 4-206474 (1992-09-01), None
Chinese Office Action dated Feb. 10, 2006, issued in corresponding Chinese patent application No. 2004 100559182.

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