公开(公告)号：US20240264089A1

公开(公告)日：2024-08-08

申请号：US18276503

申请日：2022-04-07

Applicant: LG Energy Solution, Ltd.

Inventor： Dong Hyeok Shin ,  Sang Hoon Choy ,  Jeong Soo Seol ,  In Sang Cho

IPC: G01N21/89 ,  G01N21/88 ,  H01M4/04

CPC classification number: G01N21/8914 ,  H01M4/04 ,  G01N2021/888

Abstract: A marking system is provided for identifying defects of an electrode sheet including that includes an active material layer coated with an electrode active material and a non-coating portion disposed at one side in a width direction of the active material layer. The marking system for identifying the defects of the electrode sheet may include: a vision sensor configured to detect the defects of the electrode sheet; a heater disposed behind the vision sensor in a moving direction of the electrode sheet, the heater being configured to heat the non-coating portion when the defects are detected by the vision sensor; a marker configured to mark ink on an area corresponding to each defect on the non-coating portion heated by the heater; and a blower disposed behind the marker in the moving direction of the electrode sheet to dry the ink on the area.