Electrical contacting device for an electrochemical fuel cell
First Claim
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1. A fuel cell assembly comprisinga fuel cell stack comprising membrane electrode assemblies interposed between separator plates;
- and an electrical contacting device mounted on a face of said stack, said device comprising a circuit board with electrically conductive regions that are in electrical contact with fuel cell components of said fuel cell stack.
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Abstract
An electrical contacting device for a fuel cell assembly comprises a printed circuit board comprising electrically conductive regions for providing reliable electrical contact with fuel cell components of the fuel cell assembly. Preferably the printed circuit board is flexible. The contacting device may be used, for example, for monitoring cell operating parameters like current or voltage, for short circuiting or by-passing individual cells or for directing signals to the stack.
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Citations
21 Claims
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1. A fuel cell assembly comprising
a fuel cell stack comprising membrane electrode assemblies interposed between separator plates; - and
an electrical contacting device mounted on a face of said stack, said device comprising a circuit board with electrically conductive regions that are in electrical contact with fuel cell components of said fuel cell stack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A fuel cell assembly comprising
a fuel cell stack comprising membrane electrode assemblies interposed between separator plates; - and
an electrical contacting device mounted on a face of said stack, said device comprising a printed circuit board with electrically conductive regions that are in electrical contact with fuel cell components of said fuel cell stack;
wherein the thermal expansion factors of said printed circuit board and said fuel cell stack are within about a factor of 10 of each other. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification