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. 26, 2019
Filed:
Sep. 21, 2017
Sanyo Electric Co., Ltd., Daito-shi, Osaka, JP;
Tomoharu Arai, Hyogo, JP;
Tetsuya Okado, Hyogo, JP;
Shinichirou Yoshida, Hyogo, JP;
Masashi Muraoka, Hyogo, JP;
Toyoki Fujihara, Hyogo, JP;
SANYO Electric Co., Ltd., Daito-shi, JP;
Abstract
A prismatic secondary battery includes a first current collector and a second current collector. The first current collector includes a first base disposed along a sealing plate. The second current collector includes a second base disposed along the sealing plate. A distance between an end portion of a wound electrode body facing the sealing plate and a surface of the first base facing the wound electrode body at an end portion of the first base on a central side in the longitudinal direction of the sealing plate is shorter than a distance between the end portion of the wound electrode body facing the sealing plate and a surface of the second base facing the wound electrode body at an end portion of the second base on the central side. An insulating buffer is disposed between the wound electrode body and the above surface of the first base.