US 12,280,394 B2
Coating die, coating device, coating method, and method for manufacturing secondary cell
Tetsuya Horinouchi, Kanagawa (JP); and Takashi Kashimura, Kanagawa (JP)
Assigned to VEHICLE ENERGY JAPAN INC., Ibaraki (JP)
Filed by VEHICLE ENERGY JAPAN INC., Ibaraki (JP)
Filed on Nov. 7, 2023, as Appl. No. 18/503,292.
Application 18/503,292 is a division of application No. 17/494,076, filed on Oct. 5, 2021, granted, now 11,850,627.
Application 17/494,076 is a division of application No. 16/481,914, granted, now 11,642,692, issued on May 9, 2023, previously published as PCT/JP2018/003403, filed on Feb. 1, 2018.
Claims priority of application No. 2017-018105 (JP), filed on Feb. 3, 2017.
Prior Publication US 2024/0066547 A1, Feb. 29, 2024
Int. Cl. B05C 5/02 (2006.01); B05D 1/26 (2006.01); B05D 1/34 (2006.01); B32B 37/20 (2006.01); H01M 4/04 (2006.01); H01M 4/139 (2010.01); H01M 10/04 (2006.01); H01M 10/058 (2010.01)
CPC B05C 5/027 (2013.01) [B05D 1/26 (2013.01); B05D 1/34 (2013.01); B32B 37/20 (2013.01); H01M 4/0404 (2013.01); H01M 4/139 (2013.01); H01M 10/0404 (2013.01); H01M 10/058 (2013.01); B32B 2457/10 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method for manufacturing a secondary cell, comprising: manufacturing a first electrode sheet by forming a first active material layer on a surface of a first substrate to be coated;
manufacturing a second electrode sheet by forming a second active material layer on a surface of a second substrate to be coated, and forming a heat-resistant layer on the second active material layer; and
stacking the first electrode sheet and the second electrode sheet alternately while intervening an insulating separator between the sheets,
the manufacturing of the second electrode sheet including:
preparing a coating die, the coating die including: a first block including a first manifold to receive a heat-resistant material; a second block including a second manifold to receive a second active material; and a shim sandwiched between the first block and the second block, the shim including a first recess on a face of the shim facing the first block, the first recess communicating with the first manifold, and a second recess on a face of the shim facing the second block, the second recess communicating with the second manifold, the first recess having one end of a short side of the shim that is open to define a first discharge slot to discharge the heat-resistant material, the second recess having one end of the short side of the shim, the one end of the second recess being open to define a second discharge slot to discharge the second active material,
the manufacturing of the second electrode sheet further including:
discharging the heat-resistant material and the second active material through the first discharge slot and the second coating discharge slot, respectively; and
applying the second active material and then the heat-resistant material concurrently on a surface of the second substrate to be coated while stacking the second active material and the heat-resistant material in a laminar form.