Chemistry: electrical current producing apparatus – product – and – Plural concentric or single coiled electrode
Reexamination Certificate
2005-08-30
2009-12-29
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Plural concentric or single coiled electrode
Reexamination Certificate
active
07638230
ABSTRACT:
A lithium ion secondary battery including: an electrode group including a belt-like positive electrode and a belt-like negative electrode that are wound with a separator interposed therebetween; and a can with a bottom for accommodating the electrode group, wherein the positive electrode has a positive electrode current collector and a positive electrode mixture layer carried on the positive electrode current collector, the negative electrode has a negative electrode current collector and a negative electrode mixture layer carried on the negative electrode current collector, and a porous heat-resistant layer is partially provided between the separator and at least one of the positive electrode mixture layer and the negative electrode mixture layer. Since a porous heat-resistant layer is thus placed, a high performance lithium ion secondary battery capable of efficiently preventing internal short circuit due to overheating while preventing decrease in battery characteristics can be provided.
REFERENCES:
patent: 6391488 (2002-05-01), Shimizu et al.
patent: 6805994 (2004-10-01), Shibamoto
patent: 2004/0166407 (2004-08-01), Nakajima et al.
patent: 1280399 (2001-01-01), None
patent: 07-220759 (1995-08-01), None
patent: 8-236093 (1996-09-01), None
patent: 09-190814 (1997-07-01), None
patent: 2001-167798 (2001-06-01), None
patent: 2004-063343 (2004-02-01), None
patent: 10-2004-0075723 (2004-08-01), None
Chinese Office Action issued in corresponding Chinese Patent Application No. CN 2005100978829, dated Jan. 12, 2007.
Fujita Hideaki
Fukumoto Yusuke
Hatanaka Tsuyoshi
Hayashi Tetsuya
Nagasaki Akira
McDermott Will & Emery LLP
Panasonic Corporation
Parsons Thomas H.
Ryan Patrick
LandOfFree
Lithium ion secondary battery does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lithium ion secondary battery, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lithium ion secondary battery will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4128204