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. 10, 2022
Filed:
Sep. 27, 2017
Lg Chem, Ltd., Daejeon, KR;
Minsu Cho, Daejeon, KR;
Sang-Uck Kim, Daejeon, KR;
YounJoong Kim, Daejeon, KR;
Sunghae Park, Daejeon, KR;
Abstract
A cylindrical battery cell includes an electrode assembly of a cathode/separator/anode structure and an electrolyte disposed in a battery case, a cylindrical metal container forms the battery case with the electrode assembly and the electrolyte disposed therein, a cap assembly is mounted on the open upper end of the metal container and a gasket of an elastic material is interposed between the metal container and the cap assembly. The upper end of the metal container is clamped and bent inward toward the central axis of the battery cell to enable the upper portion of the metal container to surround the exterior surface of the gasket. A recessed groove configured to partially receive the gasket by clamping, is formed on the interior surface of the inward-bent portion of the metal container. Accordingly, damage to the gasket interposed between the metal container and the cap assembly is reduced and inhibits electrolyte leakage.