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, 2014
Filed:
Jul. 09, 2012
Sungjong Kim, Daejeon, KR;
Jaehan Jung, Daejeon, KR;
Bongtae Kim, Daejeon, KR;
Hong-jeong Kim, Daejeon, KR;
Sungjong Kim, Daejeon, KR;
Jaehan Jung, Daejeon, KR;
BongTae Kim, Daejeon, KR;
Hong-Jeong Kim, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
A cylindrical battery constructed in a structure in which a crimp region is gently bent, such that the crimp region surrounds a gasket located at the inside of the crimp region, a bent front end is continuously bent twice to press the gasket, to be in the form of a compound curve. Under external physical impacts, such as vibration or dropping, applied to the battery, and when the internal pressure of the battery increases, the sealed portions are restrained from being separated from each other, thereby preventing the leakage of an electrolyte and thus greatly improving the safety of the battery. Furthermore, it is possible to minimize the deformation of the container, such as wrinkles, which may be formed due to failure to form the bent area gently when bending the front end of the crimp region with a small radius of curvature.