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. 30, 2010
Filed:
Jan. 10, 2006
Takeshi Abe, Tokushima, JP;
Syuichi Yamashita, Tokushima, JP;
Hiroyuki Suzuki, Hyogo, JP;
Sanyo Electric Co., Ltd., Moriguchi-shi, JP;
Abstract
The present invention provides for a nonaqueous electrolyte secondary battery and a producing method therefor, in which a grooved portion provided in an upper portion of the outer casing of the nonaqueous electrolyte secondary battery protrudes toward the inner portion of the outer casing, a group of electrodes being housed in the outer casing, a positive electrode and a negative electrode being wound in a spiral manner while facing each other through a separator in the group of electrodes, and a sealing member is placed on the upper portion of the grooved portion through insulated packing to seal the opening of the outer casing in an airtight manner, and whereby a circular insulating plateprovided with an arced openingand cut portionsandis arranged between the upper portion of the group of electrodes and the lower surface of the grooved portion, the cut portionsandextending from end portionsandof the opening, and the inner peripheral side of the cut portionsandof the circular insulating plate is raised from the outer peripheral side of the cut portionsand. Such insulating plate does not adversely affect the injection property of the electrolytic solution used in producing the nonaqueous electrolyte secondary battery as to provide it with excellent battery performance and excellent productivity.