US 12,244,037 B2
Manufacturing method for electrode assembly
Se Hyun Yoon, Daejeon (KR); Beomsu Kim, Daejeon (KR); Yong Nam Kim, Daejeon (KR); Heeyong Kim, Daejeon (KR); Dong Hyeuk Park, Daejeon (KR); Dong Myung Kim, Daejeon (KR); and Jae Han Jung, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Filed by LG Energy Solution, Ltd., Seoul (KR)
Filed on Jul. 8, 2022, as Appl. No. 17/860,569.
Claims priority of application No. 10-2021-0090588 (KR), filed on Jul. 9, 2021; application No. 10-2021-0090589 (KR), filed on Jul. 9, 2021; application No. 10-2021-0090590 (KR), filed on Jul. 9, 2021; application No. 10-2021-0090591 (KR), filed on Jul. 9, 2021; application No. 10-2021-0090592 (KR), filed on Jul. 9, 2021; application No. 10-2021-0090596 (KR), filed on Jul. 9, 2021; application No. 10-2021-0090597 (KR), filed on Jul. 9, 2021; application No. 10-2021-0090598 (KR), filed on Jul. 9, 2021; application No. 10-2021-0090600 (KR), filed on Jul. 9, 2021; and application No. 10-2021-0090601 (KR), filed on Jul. 9, 2021.
Prior Publication US 2023/0026407 A1, Jan. 26, 2023
Int. Cl. H01M 50/46 (2021.01); H01M 4/04 (2006.01); H01M 10/04 (2006.01); H01M 10/0525 (2010.01); H01M 10/0583 (2010.01); H01M 50/463 (2021.01); H01M 50/466 (2021.01)
CPC H01M 50/46 (2021.01) [H01M 4/043 (2013.01); H01M 4/0471 (2013.01); H01M 10/0404 (2013.01); H01M 10/0431 (2013.01); H01M 10/045 (2013.01); H01M 10/0459 (2013.01); H01M 10/0468 (2013.01); H01M 10/0525 (2013.01); H01M 10/0583 (2013.01); H01M 50/463 (2021.01); H01M 50/466 (2021.01)] 12 Claims
OG exemplary drawing
 
1. A method of manufacturing an electrode assembly, comprising:
assembling an electrode stack including a plurality of electrodes stacked along a stacking axis with a respective separator portion positioned between each of the electrodes;
after assembling the electrode stack, performing a primary heat press operation on the electrode stack, the primary heat press operation comprising applying heat and pressure to the electrode stack;
after the primary heat press operation, performing a pre-heating operation on the electrode stack; and
after the pre-heating operation, performing a secondary heat press operation on the electrode stack, the secondary heat press operation comprising applying heat and pressure to the electrode stack,
wherein the pre-heating operation includes applying heat and pressure to the electrode stack for a time period from 10 seconds to 40 seconds under a pressure condition from 0.5 MPa to 2 MPa and under a temperature condition from 50° C. to 85° C., and
wherein the pressure condition applied in the pre-heating operation includes applying a lower pressure than that applied in the primary heat press operation and the secondary heat press operation.