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:
Jul. 12, 2016
Filed:
Aug. 08, 2013
Sanyo Electric Co., Ltd., Moriguchi-shi, Osaka, JP;
Daisuke Ikeda, Kakogawa, JP;
Keisuke Minami, Kanzaki-gun, JP;
Toyoki Fujihara, Kanzaki-gun, JP;
Toshiyuki Nohma, Kakogawa, JP;
SANYO Electric Co., Ltd., Moriguchi-shi, JP;
Abstract
A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes an electrode assembly, a nonaqueous electrolyte, and a container. The electrode assembly has a positive electrode, a negative electrode, and a separator. The positive electrode contains particles of a lithium transition metal compound as a positive electrode active material. The negative electrode is opposed to the positive electrode. The separator is disposed between the positive electrode and the negative electrode. The nonaqueous electrolyte contains lithium difluorophosphate. The container houses the electrode assembly and the nonaqueous electrolyte. The battery capacity is not less than 21 Ah. The mean particle diameter (D) of the particles of the lithium transition metal compound is not less than 5 μm and not more than 15 μm. The (D−D)/Dof the particles of the lithium transition metal compound is under 1.1.