US 12,243,975 B2
Method for manufacturing secondary battery and pouch for secondary battery
Sung Chul Park, Daejeon (KR); Sang Wook Kim, Daejeon (KR); Dae Won Lee, Daejeon (KR); and Dong Hyeuk Park, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Filed by LG Energy Solution, Ltd., Seoul (KR)
Filed on Aug. 25, 2023, as Appl. No. 18/238,013.
Application 18/238,013 is a continuation of application No. 17/551,808, filed on Dec. 15, 2021, granted, now 11,799,122.
Application 17/551,808 is a continuation of application No. 16/763,120, granted, now 11,283,139, issued on Mar. 22, 2022, previously published as PCT/KR2019/000856, filed on Jan. 21, 2019.
Claims priority of application No. 10-2018-0028018 (KR), filed on Mar. 9, 2018.
Prior Publication US 2023/0411671 A1, Dec. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 50/54 (2021.01); H01M 10/04 (2006.01); H01M 50/105 (2021.01)
CPC H01M 10/045 (2013.01) [H01M 50/105 (2021.01); H01M 50/54 (2021.01)] 9 Claims
OG exemplary drawing
 
1. A pouch for a secondary battery, the pouch comprising:
a pouch sheet, wherein in an unfolded form, the pouch sheet includes:
left and right accommodation grooves for accommodating an electrode assembly when the pouch sheet is in a folded form and which are bilaterally symmetrical to each other and are opened upward; and
a bridge connecting the left and right accommodation grooves to each other,
wherein the bridge protrudes upward with respect to bottom surfaces of the left and right accommodation grooves, and a curved portion having a rounded shape is formed on an upper end of the bridge,
wherein the bottom surfaces of the left and right accommodation grooves are inclined to be bilaterally symmetrical to each other,
wherein the bottom surfaces of the left and right accommodation grooves have inclinations decreasing in a direction that is away from the bridge.