US 12,418,015 B2
Method for manufacturing electrode and electrode paste coating device
Tetsuya Mimura, Chiryu (JP); and Katsushi Enokihara, Toyota (JP)
Assigned to PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Nov. 8, 2021, as Appl. No. 17/521,158.
Claims priority of application No. 2020-191777 (JP), filed on Nov. 18, 2020.
Prior Publication US 2022/0158154 A1, May 19, 2022
Int. Cl. H01M 4/04 (2006.01)
CPC H01M 4/0435 (2013.01) [H01M 4/0404 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A method for manufacturing an electrode, the method comprising the steps of:
continuously coating an electrode paste onto a current collecting foil from a die; and
drying the coated electrode paste,
wherein the continuously coating the electrode paste onto the current collecting foil comprises
discharging the electrode paste onto the current collecting foil from the die;
conveying the current collecting foil by a backup roll;
measuring a variation of a width of the coated electrode paste caused by an axial runout of the backup roll; and
changing, according to the measured variation of width, a peripheral speed of the backup roll so that the variation caused by the backup roll is reduced;
wherein the peripheral speed of the backup roll is changed based on Equation (2) below:
VBR=VBR_const×{1−(W(x)/Wave−1)}  (2)
VBR: Peripheral speed of the backup roll,
VBR_coast: Set value of the peripheral speed of the backup roll,
W(x): Coating width at coating distance x, or coating width at time x,
Wave: Average value of coating width.