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:
Jul. 19, 2022
Filed:
Jul. 01, 2019
Lg Chem, Ltd., Seoul, KR;
Min Kyung Kim, Daejeon, KR;
Sei Woon Oh, Daejeon, KR;
Sun Hwak Woo, Daejeon, KR;
Jin Seo Park, Daejeon, KR;
Abstract
A punching system for an electrode base material is disclosed, in which the electrode base material coated with an active material on a surface of a collector is molded or cut in a predetermined shape. The punching system comprises: an unwinder on which the electrode base material in the form of a roll is mounted and around which the electrode base material is unwound; a punching device spaced a predetermined distance from the unwinder, the punching device being configured to mold or cut the electrode base material supplied from the unwinder in a predetermined shape; and a curl correcting device disposed between the unwinder and the punching device to inject or suction air onto a surface of the electrode base material while the electrode base material moves to the punching device so as to planarize the electrode base material. A punching method for an electrode base material is also disclosed.