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:
Feb. 05, 2013
Filed:
Jan. 22, 2009
Takenori Ishizu, Hitachinaka, JP;
Toru Kojima, Fukaya, JP;
Takenori Ishizu, Hitachinaka, JP;
Toru Kojima, Fukaya, JP;
Hitachi Vehicle Energy, Ltd., Ibaraki, JP;
Abstract
In a lithium secondary battery, the electrode assembly includes a positive electrode and a negative electrode which are assembled together with a separator interposing between said both electrodes. Each of the electrodes includes an active material mixture layer portion and an active material mixture layer free-portion which are arranged on a surface of said metal foil. A relationship of B<Bis satisfied, and a value of (A+A)/(B−B) is set equal to or less than 4. Where B(mm) is a width of the active material mixture layer portion of the positive electrode; B(mm) is a width of the active material mixture layer portion of the negative electrode; and each of A(mm) in the positive electrode and A(mm) in the negative electrode is a deviation between a straight line linking both corners of the active material mixture layer-free portion in the length direction of the metal foil and an edge of the active material mixture layer-free portion at a middle point in the length direction of the metal foil.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile