US 11,811,042 B2
Active material coating method for secondary battery and coating apparatus
Sang Myeon Lee, Daejeon (KR); Hyung Seok Han, Daejeon (KR); Hyungkyun Yu, Daejeon (KR); Ki Hoon Paeng, Daejeon (KR); and Jaewon Moon, Daejeon (KR)
Assigned to LG Energy Solution, Ltd.
Appl. No. 17/263,660
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Jan. 21, 2020, PCT No. PCT/KR2020/001011
§ 371(c)(1), (2) Date Jan. 27, 2021,
PCT Pub. No. WO2020/153711, PCT Pub. Date Jul. 30, 2020.
Claims priority of application No. 10-2019-0008260 (KR), filed on Jan. 22, 2019.
Prior Publication US 2021/0313553 A1, Oct. 7, 2021
Int. Cl. H01M 4/04 (2006.01); B05C 5/02 (2006.01); B05C 11/00 (2006.01); B05C 21/00 (2006.01)
CPC H01M 4/0404 (2013.01) [B05C 5/0254 (2013.01); B05C 11/00 (2013.01); B05C 21/005 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of coating an active material for a secondary battery in which the active material is coated onto an electrode current collector of the secondary battery, the method comprising:
disposing a guide member on each of a left and right side based on a moving direction of the electrode current collector, and
coating the active material onto the electrode current collector between the two guide members,
wherein the moving direction of the electrode current collector is in a linear direction by a first roller rotating in a first rotating direction, and
wherein the method further comprises a process in which the guide member is moved by a second roller at both ends of the guide member that rotates along a second rotating direction that is an opposite direction to the first rotating direction;
wherein the second roller allows the guide member to travel in place, and
wherein the guide member is disposed on each of a left and right side based on a moving direction of the electrode current collector upstream of coating the active material.