H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 8/02 (2006.01) H01M 8/24 (2006.01)
Patent
CA 2671905
The invention relates to a seal (10) for gas-tight connection of two elements (12) of a fuel cell stack, having an electrically non-conductive spacing component (16) and having at least one soldered component (18) which is solid or viscous over its entire extent at the operating temperature of the fuel cell stack and couples the spacing component (16) to at least one of the elements of the fuel cell stack to be connected, in a gas-tight manner. The invention provides for the spacing component (16) to be composed of ceramic. The invention also relates to a fuel cell stack in which, according to the invention, a force flow which compresses the fuel cell stack in the axial direction from the distance component (16) acts directly on at least one of the elements (12) to be connected. The invention also relates to a method for producing seals (10) and a fuel cell stack.
L'invention concerne un joint (10) servant à connecter de façon étanche aux gaz deux éléments (12) d'un empilement de piles à combustible avec un composant de distance (16) non conducteur d'électricité et au moins un composant de soudure (18) solide ou visqueux sur l'ensemble de son extension à la température de fonctionnement de l'empilement de piles à combustible, qui couple de façon étanche au gaz les composants de distance (16) à au moins l'un des éléments à connecter de l'empilement de piles à combustible. L'invention prévoit que le composant de distance (16) soit constitué de céramique. L'invention concerne en outre un empilement de piles à combustible dans lequel un flux de force du composant de distance (16) comprimant l'empilement de piles à combustible dans la direction axiale passe directement au-dessus d'au moins l'un des éléments à connecter (12). L'invention concerne de plus des procédés de fabrication de joints (10) et d'empilements de piles à combustible.
Baldus Hans-Peter
Buchner Karl-Hermann
Kusnezoff Mihails
Otterstedt Ralf
Reinert Andreas
Gowling Lafleur Henderson Llp
H.c. Starck Gmbh
Staxera Gmbh
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