US 12,272,812 B2
Electrode assembly manufacturing method including step of simultaneously applying heat and pressure
Byeong Kyu Lee, Daejeon (KR); Su Taek Jung, Daejeon (KR); Soon Kwan Kwon, Daejeon (KR); and Hyun Kyung Shin, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/762,927
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Oct. 6, 2020, PCT No. PCT/KR2020/013550
§ 371(c)(1), (2) Date Mar. 23, 2022,
PCT Pub. No. WO2021/080210, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 10-2019-0133419 (KR), filed on Oct. 25, 2019.
Prior Publication US 2022/0393143 A1, Dec. 8, 2022
Int. Cl. H01M 4/04 (2006.01); B32B 37/00 (2006.01); B32B 37/06 (2006.01); B32B 37/08 (2006.01); B32B 37/10 (2006.01)
CPC H01M 4/0435 (2013.01) [B32B 37/0053 (2013.01); B32B 37/06 (2013.01); B32B 37/08 (2013.01); B32B 37/10 (2013.01); B32B 2457/10 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An electrode assembly manufacturing method comprising:
operation (a) of stacking an electrode and a separator to form an electrode stack; and
operation (b) of laminating the electrode stack while simultaneously heating the electrode stack,
wherein operation (b) comprises a process of applying pressure and heat to the electrode stack to laminate the electrode and the separator with each other using pairs of heating rollers,
wherein magnitudes of pressing force applied to each of the pairs of heating rollers are set to be different from each other, wherein:
the pairs of heating rollers comprise a first pair of heating rollers to an n-th pair of heating rollers, the first pair of heating rollers being configured to allow the electrode stack to pass therethrough first, and to the n-th pair of heating rollers sequentially disposed from the first pair of heating rollers, n being an integer between 3 and 20, and
the pressing force is gradually increased in a direction from the first pair of heating rollers to the n-th pair of heating rollers.