L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

L'air Liquide Societe Anonyme Pour L'etude

Et L'exploitation Des Procedes Georges Claude

Elisabeth Rossinot

Arnaud Cerceau

Helene Trouve

Marion Paris

Nicolas Jannin

Denis Sirac

Eric Patras

Alain Guinebert

Daniel Gastaldin

Julien Marteau

Hélène Trouve

The invention relates to a stack of cells of a fuel cell comprising an anode plate and a cathode plate, at a first one of the two ends thereof, the stack ending in a first anode or cathode end plate, respectively, arranged on the cathode or anode plate, respectively, of the last cell of the stack, said first end plate defining a circuit for the cooling fluid of the last cell and said first end plate being an anode or cathode plate, respectively, identical to the anode and cathode plates, respectively, of the cells but missing the opening for dispensing reagent. It is thus possible to simplify the development and the assembly of a stack of cells of a fuel cell with proton-exchange membrane while ensuring a good seal and satisfactory cooling at the end of the stack.

Stack of cells of a fuel cell and fuel cell comprising such a stack

Leakproofing device for a fuel cell intended to be interposed between an Electrodes Membrane Assembly and a polar or bipolar plate of a fuel cell unit, the device consisting of a rigid frame and of a leakproofing seal integral with the frame, the frame furnished with the leakproofing seal defining a plurality of apertures through the device, the apertures being delimited by the leakproofing seal.

Leakproofing device for fuel cell, unit and fuel cell comprising such a device

A fuel cell plate includes at least one circulation channel for a reagent. The at least one circulation channel has an inlet communicating with a reagent distribution orifice formed through the plate. The plate also includes a reagent inlet collector orifice that is distinct from the reagent distribution orifice. The reagent inlet collector orifice supplies reagent to the inlet of at least one channel via a passage putting in fluid relationship the inlet collector orifice and the reagent distribution orifice, the inlet collector orifice extending longitudinally in the plane of the plate in a first longitudinal direction between a first bottom end and a second top end, the distribution orifice extending longitudinally in the plane of the plate in a second longitudinal direction between a first bottom end and a second top end, the first and second longitudinal directions being parallel to each other and vertical when the plate is in the vertical position of use, characterized in that, in the vertical position of use of the plate, the first bottom end of the inlet collector orifice is situated below the first bottom end of the distribution orifice.

Fuel cell plate and stack of cells comprising such a plate

Growing community of inventors

Meaudre, France

Elisabeth Rossinot