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:
Jun. 01, 2021
Filed:
Mar. 22, 2018
Lg Chem, Ltd., Seoul, KR;
Sang Gu Ji, Daejeon, KR;
Sang Uck Kim, Daejeon, KR;
Cheon Hee Bok, Daejeon, KR;
Myung An Lee, Daejeon, KR;
Geun Young Park, Daejeon, KR;
Yong Han Kim, Daejeon, KR;
Da Na Kim, Daejeon, KR;
Abstract
Disclosed herein is a cap assembly disposed on an open upper end part of a cylindrical can of a battery, the battery being configured to have an electrode assembly mounted in the cylindrical can, the cap assembly including a safety vent configured to rupture in order to exhaust gas when the interior pressure of the battery reaches a predetermined pressure limit, an upwardly-protruding cap plate disposed on the upper part of the safety vent, the cap plate having a through-opening configured to receive the gas exhausted therethrough, a current interrupt member attached to the lower end of the safety vent, the current interrupt member configured to interrupt electric current when the interior pressure of the battery reaches the predetermined pressure limit, and a guide member attached to the inside of the cap plate, the guide member being configured to prevent escape of a ruptured portion of the safety vent.