US 12,315,908 B2
Apparatus for manufacturing positive electrode film, manufacturing method using same, and positive electrode film manufactured using same
Kyungsik Hong, Daejeon (KR); Dong Hyeop Han, Daejeon (KR); Minsu Kim, Daejeon (KR); and Dongseok Shin, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 18/014,725
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed May 24, 2022, PCT No. PCT/KR2022/007372
§ 371(c)(1), (2) Date Jan. 5, 2023,
PCT Pub. No. WO2022/250427, PCT Pub. Date Dec. 1, 2022.
Claims priority of application No. 10-2021-0066777 (KR), filed on May 25, 2021; and application No. 10-2022-0063467 (KR), filed on May 24, 2022.
Prior Publication US 2023/0275206 A1, Aug. 31, 2023
Int. Cl. H01M 4/04 (2006.01); B29C 43/00 (2006.01); B29C 43/04 (2006.01); H01M 4/139 (2010.01); H01M 10/04 (2006.01); H01M 10/0585 (2010.01)
CPC H01M 4/043 (2013.01) [B29C 43/006 (2013.01); H01M 4/0433 (2013.01); H01M 4/139 (2013.01); H01M 10/0404 (2013.01); H01M 10/0585 (2013.01); B29C 2043/046 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An apparatus for manufacturing a positive electrode film, the apparatus comprising:
a feeding part supplying a positive electrode material in a powder state to an upper surface of a mold conveyed by conveying means;
a flattening part flattening the positive electrode material supplied to the upper surface of the mold;
a forming part applying pressure from an upper direction to the positive electrode material that has passed through the flattening part; and
a conveying part comprising the conveying means sequentially conveying the mold to the feeding part, the flattening part, and the forming part,
wherein the flattening part includes a scraping blade flattening an upper surface of the positive electrode material,
wherein the scraping blade comprises:
a first scraping blade flattening the upper surface of the positive electrode material in a direction opposite to a conveying direction, or flattening by reciprocating once or more in the direction opposite to the conveying direction and in the conveying direction; and
a second scraping blade flattening the upper surface of the positive electrode material once in a direction different from the conveying direction and the direction opposite to the conveying direction, or flattening by reciprocating twice or more in the direction different from the conveying direction and the direction opposite to the conveying direction, and
wherein the forming part comprises a pressure plate.