Peugeot Citroen Automobiles Sa

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Centre National De La Recherche Scientifique

Commissariat a L'energie Atomique

Psa Automobiles Sa

Xavier Glipa

Patrick Le Gallo

Jean-Philippe Poirot-Crouvezier

Bruno Ameduri

Jacques Roziere

Deborah Jones

Eric Pinton

Damien Lemasson

Sylvie Begot

Fabien Harel

Jean-Marc Le Canut

Guillaume Frutsaert

Louis Delon

Francis Roy

Pascal Schott

Guillaume Joncquet

Sadok Garnit

Jean-Philippe Poirot Crouvezier

Jean Francois Ranjard

Jean-François Ranjard

The invention relates to a cooling system for a fuel cell (), comprising a main heat-transfer-fluid circuit including a main circulation pump () and a heat exchanger () with the exterior, which feed an upstream pipe () supplying the fluid to the cells () of the fuel cell, said fluid leaving the cells via a downstream pipe () in order to return to the main pump. The system is characterised in that a secondary circuit, comprising a secondary circulation device () that circulates the fluid in an alternate manner, is connected in parallel with the main circuit to the upstream () and downstream () pipes and in that one or more controlled valves () allow the main circuit and the secondary circuit to operate independently.

Cooling system for a fuel cell

The invention relates to a monomer (6, 14) carrying an imidazole-type heterocycle (3). According to the invention, the chemical structure of said monomer (6, 14) comprises at least one unit of formula (I) wherein R1 comprises an alkenyl grouping and R2 comprises a grouping for protecting one of the nitrogen atoms of the heterocycle. The invention also relates to a monomer carrying a benzimidazole-type heterocycle, and to protected polymers obtained from said monomers, deprotected polymers produced by the protected polymers, a proton exchange membrane based on deprotected polymers, and a fuel cell provided with said membrane. Furthermore, the invention relates to methods for producing the above-mentioned monomers and polymers.

Monomers and polymers carrying imidazole and benzimidazole groupings, and proton exchange membrane containing the same for the production of a fuel cell

The invention relates to a cooling system for a fuel cell, comprising a main heat-transfer-fluid circuit including a circulation pump () and a heat exchanger () with the exterior, which feed an upstream pipe () supplying the fluid to the cells () of the fuel cell, said fluid leaving the cells via a downstream pipe () in order to return to the main pump. The invention is characterized in that the main circuit comprises a three-port controlled valve () on each upstream () and downstream () pipe, the third available port () of the upstream pipe () being connected to the inlet of the pump () and the third available port () of the downstream pipe () being connected to the outlet of the pump in order to establish a secondary fluid circuit.

The invention relates to a monomer () carrying an imidazole-type heterocycle (). According to the invention, the chemical structure of said monomer () comprises at least one unit of formula (I) wherein R1 comprises an alkenyl grouping and R2 comprises a grouping for protecting one of the nitrogen atoms of the heterocycle. The invention also relates to a monomer carrying a benzimidazole-type heterocycle, and to protected polymers obtained from said monomers, deprotected polymers produced by the protected polymers, a proton exchange membrane based on deprotected polymers, and a fuel cell provided with said membrane. Furthermore, the invention relates to methods for producing the above-mentioned monomers and polymers. 

Bipolar plate for a fuel cell, of the type comprising a cathode bipolar half-plate and an anode bipolar half-plate which are secured to each other, each bipolar half-plate () being constituted by a plate which comprises, in the central portion thereof, an active zone () and, at the peripheral portion thereof, a plurality of cut-outs () which are intended to constitute at least two oxidant units, at least two fuel units and at least two heat-exchange fluid units, at least one bipolar half-plate () comprising at least one connection between a peripheral cut-out () and the active zone (), and comprising, at the periphery thereof, at least one hollow housing () which is intended to receive a connector () for electrical measurement.

Bipolar plate for fuel cell comprising a housing for measuring connector

The invention mainly concerns a fuel cell seal () designed to be affixed on a bipolar plate () in the form of a membrane whereof the profile corresponds approximately to the peripheral frame () of the bipolar plate () and comprising a central opening () coinciding approximately with the central zone () dispensing the reagents of the bipolar plate (). The invention also concerns a fuel cell comprising an electrode membrane assembly () which includes in particular an active region (), which is the site of anode and cathode reactions, and a peripheral frame () and which is sandwiched between two bipolar plates () whereon is affixed the inventive seal ().

Seal and fuel cell comprising same affixed on the bipolar plates

Growing community of inventors

Verneuil sur Seine, France

Xavier Glipa