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. 02, 2022
Filed:
Dec. 19, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Ha Young Heo, Daejeon, KR;
Je Jun Lee, Daejeon, KR;
Hyoung Kwon Kim, Daejeon, KR;
Hae Jin Lim, Daejeon, KR;
Sang Uck Kim, Daejeon, KR;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 50/538 (2021.01); H01M 10/04 (2006.01);
U.S. Cl.
CPC ...
H01M 50/538 (2021.01); H01M 10/0422 (2013.01); H01M 10/0431 (2013.01);
Abstract
A cylindrical secondary battery includes a jelly-roll type electrode assembly, a cylindrical battery case for receiving the jelly-roll type electrode assembly, and a cap assembly mounted to the open upper end of the cylindrical battery case. The jelly-roll type electrode assembly includes a long sheet type positive electrode and a long sheet type negative electrode wound with a separator interposed between the positive electrode and the negative electrode. A welding pole is formed on the bottom surface of the cylindrical battery case so as to extend perpendicularly thereto.