The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 2007
Filed:
Jun. 27, 2003
Applicants:
Tsuyoshi Iijima, Tokyo, JP;
Atsushi Sano, Tokyo, JP;
Satoshi Maruyama, Tokyo, JP;
Inventors:
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/58 (2006.01); H01M 4/62 (2006.01); H01M 4/02 (2006.01); H01M 2/16 (2006.01); H01M 4/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention aims to provide a lithium secondary battery exhibiting the improved function of self safety in an abnormal state without sacrificing battery characteristics. To attain the object, in a lithium secondary battery comprising a positive electrode (), a negative electrode (), an electrolytic solution, and a separator, a plurality of positive electrodes () and negative electrodes () are arranged to construct an electrode structure which includes an outermost layer of electrode on which a back coat layer () is formed.