US 12,438,162 B2
Separator unit for a fuel cell and a unit cell for a fuel cell including same
Han Gil Ko, Yongin-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on Jul. 27, 2022, as Appl. No. 17/875,006.
Claims priority of application No. 10-2021-0185245 (KR), filed on Dec. 22, 2021.
Prior Publication US 2023/0197981 A1, Jun. 22, 2023
Int. Cl. H01M 8/0273 (2016.01); H01M 8/0267 (2016.01); H01M 8/1004 (2016.01)
CPC H01M 8/0273 (2013.01) [H01M 8/0267 (2013.01); H01M 8/1004 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A separator unit used in a unit cell of a fuel cell, the separator unit comprising:
a first separator having a reaction surface on which an electricity-generating assembly (EGA) is disposed and in which a gas diffusion layer (GDL) is laminated on each of both sides of a membrane electrode assembly (MEA), the reaction surface formed on a first side of the first separator and a cooling surface formed on a second side of the first separator; and
a reaction surface gasket formed on the reaction surface of the first separator, wrapping and fixing a top and bottom of the EGA at a side of the EGA, and forming an airtight line with a second separator of the unit cell, wherein the reaction surface gasket is divided into:
an adhesive portion provided by being adhered to the reaction surface of the first separator;
a hinge portion extended in a direction protruding from the adhesive portion; and
a close contact portion bent and extended from an end of the hinge portion,
wherein an insertion space is formed by the reaction surface gasket in which the side of the EGA is inserted by being surrounded by the adhesive portion, the hinge portion, and the close contact portion.