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:
Jan. 31, 2017
Filed:
Mar. 31, 2009
Yoshiyuki Muraoka, Osaka, JP;
Yukihiro Okada, Osaka, JP;
Yoshiyuki Muraoka, Osaka, JP;
Yukihiro Okada, Osaka, JP;
Abstract
The nonaqueous electrolyte secondary battery of the invention includes: a wound-type electrode group including a long positive electrode, a long negative electrode, and a separator disposed between the positive electrode and the negative electrode; a nonaqueous electrolyte; and a prismatic battery case accommodating the electrode group and the nonaqueous electrolyte. A horizontal cross-section of the electrode group has a major axis and a minor axis. The positive electrode includes a positive electrode current collector and a positive electrode active material layer disposed thereon, and the negative electrode includes a negative electrode current collector and a negative electrode active material layer disposed thereon. A tensile strength of the positive electrode when an elongation percentage in a longitudinal direction of the positive electrode is 1% is not greater than 15 N/cm.