Proton exchange membrane fuel cell stack and fuel cell stack module
First Claim
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1. A proton exchange membrane fuel cell stack, comprising:
- a plurality of repeating, serially electrically coupled fuel cell stack modules, wherein the respective fuel cell stack modules include an electrically conductive heat sink having a low thermal conductive mass, and wherein the thermal conductive mass of individual heat sinks of individual fuel cell stack modules provide a substantially different degree of cooling for each of the respective fuel cell stack modules within the fuel cell stack, so that a resulting operating temperature of any one of the plurality of fuel cell stack modules differs from an operating temperature of any other of the plurality of fuel cell stack modules by less than about ten percent.
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Abstract
A proton exchange membrane fuel cell stack and novel proton exchange membrane fuel cell module are disclosed and wherein the proton exchange membrane fuel cell stack includes a plurality of repeating, serially electrically coupled fuel cell stack modules, and which are sealably mounted together by a compressive force of less than about 60 pounds per square inch.
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Citations
22 Claims
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1. A proton exchange membrane fuel cell stack, comprising:
a plurality of repeating, serially electrically coupled fuel cell stack modules, wherein the respective fuel cell stack modules include an electrically conductive heat sink having a low thermal conductive mass, and wherein the thermal conductive mass of individual heat sinks of individual fuel cell stack modules provide a substantially different degree of cooling for each of the respective fuel cell stack modules within the fuel cell stack, so that a resulting operating temperature of any one of the plurality of fuel cell stack modules differs from an operating temperature of any other of the plurality of fuel cell stack modules by less than about ten percent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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