Title:
NOTCHING SYSTEM FOR ELECTRODE SHEET
Document Type and Number:
WIPO Patent Application WO/2023/068815
Kind Code:
A1
Abstract:
The present invention presents a notching system for an electrode sheet in which slurry is applied to the surface of a current collector, the notching system comprising: an electrode unwinder from which an electrode sheet is unwound; a film unwinder for unwinding a protective film laminated on the electrode sheet; a notching device for notching an uncoated portion of the electrode sheet, which is a portion to which slurry is not applied, when the protective film is provided on the electrode sheet in a laminated state; and a rewinder in which the notched electrode sheet is wound. In the present invention having the above configuration, a notching process is performed in a state in which the electrode sheet and the protective film are stacked, and thus, it is possible to solve the problem of cutting, tearing, etc. of the electrode sheet and the problem of causing scratches due to separation of graphite powder from the surface of the electrode sheet.
Inventors:
LI ZHENG HUA (KR)
PARK KI BEOM (KR)
SONG EUI SEOB (KR)
LEE HYO JOON (KR)
YEE MIN HA (KR)
SONG EUN JI (KR)
PARK KI BEOM (KR)
SONG EUI SEOB (KR)
LEE HYO JOON (KR)
YEE MIN HA (KR)
SONG EUN JI (KR)
Application Number:
PCT/KR2022/015970
Publication Date:
April 27, 2023
Filing Date:
October 19, 2022
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M50/531; B26F1/12; B65H35/00; H01M10/04
Domestic Patent References:
| WO2021182656A1 | 2021-09-16 |
Foreign References:
| KR20130073300A | 2013-07-03 | |||
| JP2019125499A | 2019-07-25 | |||
| KR20210104264A | 2021-08-25 | |||
| KR20150062839A | 2015-06-08 |
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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