US 11,811,084 B2
Degassing system of pouch for secondary battery
Jae Gyu Byun, Daejeon (KR); Dong Ju Kim, Daejeon (KR); Jin Go Kim, Daejeon (KR); Seung Noh Lee, Daejeon (KR); Taek Eon Jeong, Daejeon (KR); Deok Kun Kim, Chungcheongbuk-do (KR); and Kang Min Lee, Chungcheongbuk-do (KR)
Assigned to SK ON CO., LTD., Seoul (KR)
Filed by SK Innovation Co., Ltd., Seoul (KR); and RS AUTO Co., Ltd., Chungcheongbuk-do (KR)
Filed on Jun. 22, 2021, as Appl. No. 17/354,271.
Claims priority of application No. 10-2020-0078543 (KR), filed on Jun. 26, 2020.
Prior Publication US 2021/0408635 A1, Dec. 30, 2021
Int. Cl. H01M 50/358 (2021.01); H01M 50/105 (2021.01); H01M 50/60 (2021.01); H01M 10/04 (2006.01); H01M 50/691 (2021.01); H01M 50/673 (2021.01); H01M 4/04 (2006.01)
CPC H01M 50/358 (2021.01) [H01M 10/0404 (2013.01); H01M 50/105 (2021.01); H01M 50/60 (2021.01); H01M 50/673 (2021.01); H01M 50/691 (2021.01); H01M 4/0447 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A degassing system of a pouch for a secondary battery, for removing gas from the pouch with a sealed edge, the degassing system comprising:
a separation unit including an adsorption plate for adsorbing at least one surface of the pouch, and a degassing adsorption plate being disposed inside the adsorption plate and adsorbing the pouch inside of the adsorption plate, the degassing adsorption plate including a guide hole through which a needle is configured to be drawn in and out, the separation unit forming a space inside the pouch by pulling the adsorption plate through suction operation of a suction passage;
a gas discharge unit discharging gas inside the pouch through a gas discharge path formed in the needle when the needle pierces the pouch; and
a foreign substance removing unit suctioning a discharge mixed with gas respectively flowing into the suction passage and the gas discharge path, the adsorption plate and the degassing adsorption plate providing adsorption force required for pouch adsorption.