US 11,973,242 B2
Gas removal device for secondary battery, and gas removal method using same
Sang Jih Kim, Daejeon (KR); Joon Sung Bae, Daejeon (KR); Beom Koon Lee, Daejeon (KR); Dong Hun Bae, Daejeon (KR); Eui Kyung Lee, Daejeon (KR); and Suk Hyun Hong, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/419,064
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Jul. 22, 2020, PCT No. PCT/KR2020/009648
§ 371(c)(1), (2) Date Jun. 28, 2021,
PCT Pub. No. WO2021/025337, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 10-2019-0094967 (KR), filed on Aug. 5, 2019.
Prior Publication US 2022/0077537 A1, Mar. 10, 2022
Int. Cl. H01M 50/317 (2021.01); H01M 10/04 (2006.01); H01M 50/105 (2021.01)
CPC H01M 50/317 (2021.01) [H01M 10/0404 (2013.01); H01M 50/105 (2021.01)] 14 Claims
OG exemplary drawing
 
1. A degassing apparatus of a battery cell, the degassing apparatus comprising:
a drive motor; and
a jig arm configured to pressurize a first surface of a gas pocket of the battery cell and a second surface of the gas pocket opposite to the first surface by controlling a space within the jig arm by the drive motor,
wherein an inside of the jig arm comprises:
a piercing unit including a through member configured to form a through hole in the gas pocket;
a sealing unit configured to seal a periphery of the through hole formed by the through member; and
a pad unit surrounding the sealing unit, the pad unit being configured to block an inflow of external gas into the through hole when in contact with the gas pocket; and
a vacuum forming unit configured to suck air inside an area enclosed by the pad unit when in contact with the gas pocket,
wherein the jig arm includes a pair of arms extending from the drive motor, the arms being arranged to face each other,
wherein the sealing unit and the pad unit are respectively formed in a shape corresponding to each other on the pair of arms, and
wherein the pair of jig arms are pivotable with respect to each other.