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:
Mar. 29, 2016
Filed:
Jun. 04, 2012
DO Gyun Kim, Cheongwon-gun, KR;
Dong-myung Kim, Daejeon, KR;
Sang Bong Nam, Cheonan-Si, KR;
Dong Sub Lee, Icheon-si, KR;
Jun Ho Moon, Cheongwon-gun, KR;
Sang Sok Jung, Cheongwon-gun, KR;
Do Gyun Kim, Cheongwon-gun, KR;
Dong-Myung Kim, Daejeon, KR;
Sang Bong Nam, Cheonan-Si, KR;
Dong Sub Lee, Icheon-si, KR;
Jun Ho Moon, Cheongwon-gun, KR;
Sang Sok Jung, Cheongwon-gun, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
Disclosed is a secondary battery having a structure in which a jelly-roll having a cathode/separator/anode structure is mounted in a cylindrical battery case, wherein a plate-shaped insulator mounted on top of the jelly-roll includes a perforated inlet enabling gas discharge and penetration of electrode terminals, a plurality of fine pores having a size that allows permeation of an electrolyte solution, but does not allow permeation of foreign materials, and a plurality of strip or bead shaped protrusions disposed in transverse and/or longitudinal directions on one or both surfaces of the insulator.