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. 18, 2025
Filed:
Nov. 12, 2021
Samsung Sdi Co., Ltd., Yongin-si, KR;
Sung Gwi Ko, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
The present invention relates to a secondary battery, which has a simplified cap assembly structure to ensure an inner space, and thus can have increased capacity. Disclosed in one embodiment is a secondary battery comprising: an electrode assembly; a case for accommodating the electrode assembly; and a cap assembly coupled to the top of the case and electrically connected to the electrode assembly, wherein the cap assembly comprises: a cap plate having a ring-shaped first groove formed on the upper surface thereof, and a ring-shaped second groove formed on the lower surface thereof and connected to the first groove; and an insulation member insert-injected into the first groove.