US 11,955,591 B2
Method for manufacturing secondary battery and apparatus for manufacturing secondary battery
Mi Ae An, Daejeon (KR); and Hyun Tae Kim, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/766,932
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Oct. 5, 2020, PCT No. PCT/KR2020/013452
§ 371(c)(1), (2) Date Apr. 6, 2022,
PCT Pub. No. WO2021/071178, PCT Pub. Date Apr. 15, 2021.
Claims priority of application No. 10-2019-0124207 (KR), filed on Oct. 7, 2019.
Prior Publication US 2023/0142281 A1, May 11, 2023
Int. Cl. H01M 50/00 (2021.01); H01M 10/04 (2006.01)
CPC H01M 10/0409 (2013.01) 11 Claims
OG exemplary drawing
 
1. A method for manufacturing a secondary battery, in which a plurality of unit cells are seated on a separator sheet and folded to manufacture a folded cell, the method comprising:
moving the plurality of unit cells through a moving unit to supply the unit cells toward the separator sheet;
sequentially dropping the plurality of unit cells onto a top surface of the separator sheet while the separator sheet moves relative to the moving unit between successive drops of the unit cells, so that the unit cells are spaced a predetermined gap distance from each other along the top surface; and
folding the separator sheet to manufacture the folded cell.