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:
Aug. 18, 2015
Filed:
Nov. 09, 2011
Ji Young Kim, Seoul, KR;
Jungjin Kim, Daejeon, KR;
Kwan Soo Lee, Daejeon, KR;
Sungjong Kim, Daejeon, KR;
Sooryoung Kim, Chungcheongbuk-do, KR;
Chahun Ku, Daejeon, KR;
Dukhyun Ryu, Daejeon, KR;
Byung Kyu Jung, Daejeon, KR;
Ji Young Kim, Seoul, KR;
Jungjin Kim, Daejeon, KR;
Kwan Soo Lee, Daejeon, KR;
Sungjong Kim, Daejeon, KR;
SooRyoung Kim, Chungcheongbuk-do, KR;
Chahun Ku, Daejeon, KR;
Dukhyun Ryu, Daejeon, KR;
Byung kyu Jung, Daejeon, KR;
LG CHEM LTD., Seoul, KR;
Abstract
Provided is a cylindrical battery in which an electrode assembly fabricated by rolling a cathode/separator/anode and an electrolyte are provided in a cylindrical can, wherein a cap assembly mounted on the opening top of the cylindrical can comprises: a safety vent provided with a predetermined notch, to allow breakage due to high-pressure gas of the battery, a current interruptive device to interrupt current, welded to the bottom of the safety vent, and a gasket for the current interruptive device to surround the periphery of the current interruptive device, wherein the current interruptive device comprises two or more through holes to allow exhaustion of gas, wherein the through holes have a size of 20 to 50% with respect to the total area of the current interruptive device.