Contact element for a fuel cell stack
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United States of America Patent
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Issued Date -
Nov 17, 2005
app pub date -
Feb 18, 2005
filing date -
May 12, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A contact element (7) for a fuel cell stack for connecting the electrodes (3, 4) of two adjacent fuel cells. The contact element is has at least one sealed cavity which is filled with a gas. The gas continuously imparts elasticity to the contact element (7) even at high temperatures, by which reliable contact-making of the electrodes (3, 4) is ensured. Furthermore, a fuel cell stack in which a contact element (7) is used has the anode of one fuel cell electrically connected to the cathode of an opposite fuel cell via the contact element. The contact elements can be tubes or can be formed of corrugated plates that are arranged in mirror image fashion forming channels and are connected at least at an outer area so as to seal the channels relative to the outside.
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