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:
Nov. 14, 2017
Filed:
Dec. 10, 2015
Samsung Sdi Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Jaeil Seong, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
Provided is a secondary battery, which can improve a coupling force between a case and a cap plate and can improve stability of the secondary battery, by forming a coupling protrusion on a side surface of the cap plate and forming a coupling groove corresponding to the coupling protrusion on an inner surface of the case. The secondary battery includes an electrode assembly, a case accommodating the electrode assembly, and a cap plate coupled to an opening of the case. A coupling protrusion protruding toward an inner surface of the case is formed on a side surface of the cap plate, and a coupling groove corresponding to the coupling protrusion is formed on the inner surface of the case.