US 12,115,554 B2
Slot die coating device having air vent
Ki Tae Kim, Daejeon (KR); Taek Soo Lee, Daejeon (KR); Do Hyun Lee, Daejeon (KR); Cheolwoo Kim, Daejeon (KR); and Sang Hoon Choy, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/419,832
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Aug. 27, 2020, PCT No. PCT/KR2020/011446
§ 371(c)(1), (2) Date Jun. 30, 2021,
PCT Pub. No. WO2021/045442, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 10-2019-0110996 (KR), filed on Sep. 6, 2019.
Prior Publication US 2022/0080451 A1, Mar. 17, 2022
Int. Cl. B05C 5/02 (2006.01); B05C 11/00 (2006.01); H01M 4/04 (2006.01)
CPC B05C 5/0254 (2013.01) [B05C 11/00 (2013.01); H01M 4/0404 (2013.01); H01M 4/0409 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A slot die coating apparatus for coating an electrode collector with an electrode active material slurry, the slot die coating apparatus comprising:
a coating roller;
a slot die comprising two or more dies;
wherein the slot die comprises a left die (401A) including a left slurry receiving part (421) and a left discharge opening (405), and a right die (401B) including a right slurry receiving part (411) and a right discharge opening (406),
the left discharge opening (405) configured to discharge the electrode active material slurry in an opposite direction to which gravity acts;
the right discharge opening (406) configured to discharge the electrode active material slurry in the opposite direction to which gravity acts;
a left air vent (403A) installed in the left slot die (401A),
a right air vent (403B) installed in the right slot die (401B),
wherein the left air vent (403A) is directly connected to a portion (S1) at which the left slurry receiving part (421) and the left discharge opening (405) connect, and
wherein the right air vent (403B) is directly connected to a portion (S2) at which the right slurry receiving part (411) and the right discharge opening (406) connect.