Abstract:
A method for the production of a fuel cell stack, involving the following steps: a) piling up the fuel cell stack (1) and (b) putting together the fuel cell stack (1) while heating and compressing the piled fuel cell stack (1). At least one regulated force is applied to the piled fuel cell stack (1) during the compression thereof.
Abstract:
The invention relates to a media supply plate (10) for a fuel cell stack (12) comprising at least one anode gas terminal (14) and at least one cathode gas terminal (16). According to the invention the media supply plate (10) further comprises at least one anode waste gas terminal (18) and at least one cathode waste gas terminal (20). The invention further relates to a fuel cell system (52) using such a media supply plate (10) as well as a method for producing such a fuel cell system.
Abstract:
The invention relates to a media supply plate (10) for a fuel cell stack (12) comprising at least one anode gas terminal (14) and at least one cathode gas terminal (16). According to the invention the media supply plate (10) further comprises at least one anode waste gas terminal (18) and at least one cathode waste gas terminal (20). The invention further relates to a fuel cell system (52) using such a media supply plate (10) as well as a method for producing such a fuel cell system.
Abstract:
A repeating unit (10) for a fuel cell stack comprises a gas conducting region (8) for conducting a first gas (12) to and along an active surface (14). A barrier (16) is located in the gas conducting region. The gas conducting region comprises, at least over the active surface, a plurality of channels (20, 22, 24, 26, 28, 30, 32, 34) for conducting the first gas along the active surface. At least a first channel (26) among the plurality of channels defines a first flow direction at a first point (46) located closest to the barrier and a second flow direction at a second point (48), wherein a first straight line (50) which extends through the first point (46) and is parallel to the first flow direction misses the barrier (16) while a second straight line (52) which extends through the second point (48) and is parallel to the second flow direction intersects the barrier. The barrier (16) can he located upstream or downstream of the active surface (14).
Abstract:
Die Erfindung betrifft ein Brennstoffzellensystem (10) mit einem ersten exotherm betriebenen Brennstoffzellenstapel (14) und einem zweiten nicht exotherm betriebenen Brennstoffzellenstapel (16), wobei dem zweiten Brennstoffzellenstapel (16) Wassermoleküle enthaltendes Anodenabgas (18) des ersten Brennstoffzellenstapels (14) zuführbar ist und wobei über eine Zuleitung dem Anodenabgas (18) Kohlenwasserstoffe (20) beimischbar sind. Erfindungsgemäß ist vorgesehen, dass das Anodenabgas (18) des ersten Brennstoffzellenstapels (14) dem zweiten Brennstoffzellenstapel (16) ungekühlt zuführbar ist. Die Erfindung betrifft weiterhin ein Verfahren zum Betreiben eines Brennstoffzellensystems.