US 12,218,336 B2
Method for producing electrode
Tetsuya Mimura, Chiryu (JP); Katsushi Enokihara, Toyota (JP); Masanori Kitayoshi, Toyota (JP); and Kouji Yamashiro, Miyoshi (JP)
Assigned to PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-Ken (JP)
Filed by Prime Planet Energy & Solutions, Inc., Tokyo (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken (JP)
Filed on Feb. 25, 2022, as Appl. No. 17/680,315.
Claims priority of application No. 2021-031991 (JP), filed on Mar. 1, 2021.
Prior Publication US 2022/0278307 A1, Sep. 1, 2022
Int. Cl. H01M 4/04 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 4/0435 (2013.01) [H01M 4/0404 (2013.01); H01M 10/0525 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method for producing an electrode, comprising:
rolling an electrode material between a rotating first roll and a rotating second roll to form a mixture coated film;
attaching the mixture coated film to the second roll and transporting the mixture coated film;
guiding a long belt-shaped electrode current collector by a rotating third roll and transporting the electrode current collector; and
passing the mixture coated film and the electrode current collector between the second roll and the third roll to compressedly bond the mixture coated film to a surface of the electrode current collector;
the method further comprising:
detecting a film thicknesses TB1 of a left side of the mixture coated film between a surface position of a left side edge of the mixture coated film detected by a first sensor of the left side and a surface position of the left side edge of the second roll detected by a second sensor of the left side;
detecting a film thicknesses TB2 of a right side of the mixture coated film between a surface position of a right side edge of the mixture coated film detected by a first sensor of the right side and a surface position of the right side edge of the second roll detected by a second sensor of the right side;
determining an average film thickness TB of the mixture coated film by calculating (TB1+TB2)/2; and
adjusting a ratio of a rotation speed of the third roll relative to a rotation speed of the second roll based on the average film thickness TB of the mixture coated film, wherein
a detection position of the first sensor of the left side and the first sensor of the right side and a detection position of the second sensor of the left side and the second sensor of the right side in a circumferential direction of the second roll being maintained substantially identical.