Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Reexamination Certificate
2011-03-22
2011-03-22
Rhee, Jane (Department: 1726)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Cell enclosure structure, e.g., housing, casing, container,...
C429S162000, C429S164000, C429S168000, C429S176000
Reexamination Certificate
active
07910242
ABSTRACT:
In a nonaqueous electrolyte secondary battery in which an electrode plate group including a positive electrode plate and a negative electrode plate which have a positive electrode mixture layer formed on a positive electrode current collector to contain a positive electrode active material and a negative electrode mixture layer formed on a negative electrode current collector to contain a negative electrode active material, respectively, and are spirally wound or stacked with a separator interposed therebetween is encapsulated in a battery exterior packaging body with an electrolyte, the battery exterior packaging body includes a gas releasing valve for releasing gas in the battery exterior packaging body to the outside when a gas pressure in the battery exterior packaging body reaches a working pressure and is formed to be deformable where the gas pressure in the battery exterior packaging body is lower than the working pressure of the gas releasing valve.
REFERENCES:
patent: 6413679 (2002-07-01), Kuboki et al.
patent: 6623888 (2003-09-01), Omaru et al.
patent: 6841297 (2005-01-01), Kitoh et al.
patent: 2003/0175583 (2003-09-01), Suzuki
patent: 10-321260 (1998-12-01), None
Fujita Hideaki
Muraoka Yoshiyuki
Okada Yukihiro
Wada Naoyuki
McDermott Will & Emery LLP
Panasonic Corporation
Rhee Jane
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