Importance

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Abstract

A fuel cell stack bipolar plate, includes two half-plates connected to one another and a flow space formed between the half-plates for distributing a coolant flowing into the flow space through an inlet hole of the bipolar plate, located on a first edge of the bipolar plate, and flows out of the flow space through an outlet hole of the bipolar plate, located on an opposite second edge of the bipolar plate, over the area of the bipolar plate's flow field. The flow field debouches at its ends facing toward the first and second edges of the bipolar plate into a distribution region connected to the respective hole. The distribution region includes a pre-distributing channel, which debouches into the respective hole, extends along a direction of the first and second edges of the bipolar plate and has a plurality of throttle apertures arranged distributed and face toward the flow field.

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First Claim