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:
Sep. 17, 2024
Filed:
Oct. 23, 2018
Lg Chem, Ltd., Seoul, KR;
Kwang Su Hwang Bo, Daejeon, KR;
Je Jun Lee, Daejeon, KR;
Sang Sok Jung, Daejeon, KR;
Jun Tak Kim, Daejeon, KR;
Gil Young Lee, Daejeon, KR;
Seong Mo Koo, Daejeon, KR;
LG Energy Solution, Ltd., Seoul, KR;
Abstract
A method of manufacturing a cylindrical battery case includes performing an ironing process, which is one of the processes of manufacturing the battery case, a plurality of times in order to decrease the surface roughness of the battery case, thereby improving the corrosion characteristics of the battery case. The surface roughness of the cylindrical battery case is decreased by performing a thickness reducing process when a process for forming the outer circumferential surface of a body of the cylindrical battery case is performed at the time of manufacturing the cylindrical battery case. In addition, corrosion characteristics are improved for respective values of the surface roughness.