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:
Jun. 04, 2024
Filed:
May. 24, 2019
Sanyo Electric Co., Ltd., Daito, JP;
PANASONIC ENERGY CO., LTD., Osaka, JP;
Abstract
A nonaqueous electrolyte secondary battery includes a roll-type electrode group including positive and negative electrode plates and a tape attached to the outermost circumferential surface of the electrode group. The tape has two adhesion regions including an adhesive layer and a non-adhesion region that is interposed between the two adhesion regions and is composed of a base material layer only. The non-adhesion region straddles the rolling-end edge of at least one of the positive or negative electrode active material layer on the roll inner side of the positive or negative electrode collector and the positive or negative electrode active material layer on the roll outer side of the positive or negative electrode collector in the positive or negative electrode plate when the electrode group is viewed from a roll center axis toward the outside of the roll.