Patent ID: 9379408
Filing Date: 2016-06-28
CPC Classification: H01M,Y02E,Y02P

Claim Text:
1. A fuel cell system comprising: a fuel cell stack assembly having a plurality of fuel cells disposed between a first end plate and a second end plate; and a compression retention enclosure comprising an upper compression shell disposed in contact adjacent the first end plate, a lower compression shell disposed in contact adjacent the second end plate, the upper compression shell having a descending extension substantially orthogonal to the first endplate, the lower compression shell having an ascending extension substantially orthogonal to the second end plate, said descending extension extending toward and substantially coplanar with said ascending extension, and each extension having an outwardly hemmed edge coplanar with the outwardly hemmed edge of the other extension, and at least one side sheet, each side sheet having a first hemmed edge coupled to the upper compression shell by an interlocking hem joint and a second hemmed edge coupled to the lower compression shell by an interlocking hem joint.