PEM Brennstoffzellenstapelanordnung mit isoliertem internem Kühlmittelverzweigungssystem

摘要

A PEM fuel cell assembly includes cooler plates ( 10 ) with internal coolant manifolds ( 25 ) isolated from the cell stack assembly by an isolation gap ( 28 ) to minimize the risk of contamination of the cells by antifreeze. The internal coolant manifolds are formed by seal assemblies ( 24 ), each disposed between inlet or outlet openings ( 14, 15 ) in projections ( 16 ) of each cooler plate extending outwardly from the fuel cell planform ( 20 ) to provide a gap ( 28 ), which may be used as an air turn manifold. Flanges ( 40 ) with through holes ( 41 ) may receive tie rods to assist assembly of a fuel cell stack with the cooler plate.