US 12,136,749 B2
Seal structure for fuel cell separator
Taisuke Matsuda, Fujisawa (JP); and Shigeru Watanabe, Fujisawa (JP)
Assigned to NOK CORPORATION, (JP)
Appl. No. 17/607,054
Filed by NOK CORPORATION, Tokyo (JP)
PCT Filed Aug. 24, 2020, PCT No. PCT/JP2020/031811
§ 371(c)(1), (2) Date Oct. 28, 2021,
PCT Pub. No. WO2021/049280, PCT Pub. Date Mar. 18, 2021.
Claims priority of application No. 2019-163737 (JP), filed on Sep. 9, 2019.
Prior Publication US 2022/0231310 A1, Jul. 21, 2022
Int. Cl. H01M 8/0276 (2016.01)
CPC H01M 8/0276 (2013.01) 12 Claims
OG exemplary drawing
 
1. A seal structure for a fuel cell separator, comprising:
a pair of the separators facing each other with a mating member interposed therebetween and having beads forming a flow path for fluid between the separator and the mating member in close contact with the mating member; and
a seal provided with a seal material having elasticity between side walls of the beads of the pair of separators, which are overlapped in a nested manner and facing each other,
wherein the seal material has stickiness that the seal material is stuck to the side walls of the beads; and
wherein the seal material is also stuck to the surface of the separator which communicates with the side wall.