Flow field board arrangement for fuel cell

Abstract

A flow field board arrangement for a fuel cell is disclosed. Injection flow channels and exhaust flow channels are individually disposed on the surface of a substrate. At least a concave portion is disposed on the same, and connected to the injection flow channel and the exhaust flow channel accordingly. An inlet is disposed on the side of the substrate and connected to an end of the injection flow channel. An outlet is disposed on the side of the substrate and connected to an end of the exhaust flow channel. The flow field board arrangement is characterized in that each injection flow channel has an identical length from an influx end of the concave portion to the inlet and/or has an equivalent flow rate, and each exhaust flow channel has an identical length from an efflux end of the concave portion to the outlet and/or has an equivalent flow rate. Additionally, the length of each injection flow channel is identical to that of each exhaust flow channel, and/or the flow rate of each injection flow channel is equivalent to that of each exhaust flow channel.

Dependencies are inferred from the claim text.