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:
May. 07, 2024
Filed:
Dec. 17, 2019
Sanyo Electric Co., Ltd., Daito, JP;
Hiroyuki Tajima, Hyogo, JP;
Tetsuya Sato, Hyogo, JP;
SANYO Electric Co., Ltd., Osaka, JP;
Abstract
A secondary battery with a positive electrode plate having a metallic positive electrode core body and positive electrode active material layers formed on both surfaces of the positive electrode core body. The positive electrode core body has an active material layer-free region in which the positive electrode active material layers are not formed on the surface of the positive electrode core body, wherein a first protrusion protruding in the thickness direction of the positive electrode core body from one surface of the positive electrode core body is formed at the end of the active material layer-free region, positive electrode protection layers are formed in a portion adjacent to the positive electrode active material layers on one surface of the positive electrode core body in the active material layer-free region, and the protrusion height Tof the first protrusion is less than the thickness Tof the positive electrode protection layer.