US 12,424,715 B2
Method for manufacturing secondary battery
Hideki Sano, Ikeda (JP); Daisuke Nishide, Kobe (JP); and Shigeki Matsuta, Kobe (JP)
Assigned to PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo (JP)
Filed by PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo (JP)
Filed on Nov. 28, 2022, as Appl. No. 17/994,990.
Claims priority of application No. 2021-194885 (JP), filed on Nov. 30, 2021.
Prior Publication US 2023/0282951 A1, Sep. 7, 2023
Int. Cl. H01M 50/618 (2021.01); H01M 4/02 (2006.01); H01M 4/13 (2010.01); H01M 10/0587 (2010.01); H01M 50/46 (2021.01)
CPC H01M 50/618 (2021.01) [H01M 4/13 (2013.01); H01M 10/0587 (2013.01); H01M 50/461 (2021.01); H01M 2004/028 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for manufacturing a secondary battery,
the secondary battery comprising an electrode body comprising a positive electrode sheet, a negative electrode sheet, and a separator arranged between the positive electrode sheet and the negative electrode sheet,
an electrolyte, and
a battery case for accommodating the electrode body and the electrolyte,
the method comprising a solution introducing step of introducing the electrolyte into the battery case, and
a pressure reducing step of reducing a pressure in the battery case after the solution introducing step,
wherein
after an elapse of 10 hours or more after the solution introducing step, the pressure reducing step is carried out.