increatedoutincreatedoutout represents an amount of water discharged from the electrochemical cell by an oxidant exhaust gas. The method includes tracking a cumulative water imbalance during operation of the electrochemical cell by repeatedly determining the present water imbalance and continuing to sum the results during operation. And, the method also includes adjusting a flow rate of the oxidant feed gas entering the electrochemical cell based on the cumulative water imbalance.
H01M 8/04291 - Dispositions de gestion de l’eau dans les systèmes d’éléments à combustible à électrolyte solide
H01M 8/04223 - Dispositions auxiliaires, p. ex. pour la commande de la pression ou pour la circulation des fluides pendant le démarrage ou l’arrêtDépolarisation ou activation, p. ex. purgeMoyens pour court-circuiter les éléments à combustible défectueux
The electrochemical cell stack assembly has electrochemical ceil sub-stacks. A first and second electrochemical cell sub-stack are connected electrically in series and fluid!y in parallel, The first and second electrochemical ceil sub-stacks have electrochemical cells. The electrochemical cells have a membrane electrode assembly with an cathode catalyst layer, an anode catalyst layer, and a polymer membrane therebetween. The electrochemical cells have an anode plate and a cathode plate with the membrane electrode assembly interposed therebetween, a cathode flow field, and the anode plate.
H01M 8/0202 - CollecteursSéparateurs, p. ex. séparateurs bipolairesInterconnecteurs
H01M 8/2475 - Enceintes, boîtiers ou récipients d’empilements d’éléments à combustible
H01M 8/2484 - Détails des groupements d'éléments à combustible caractérisés par les collecteurs d’admission externes
H01M 8/249 - Groupement d'éléments à combustible, p. ex. empilement d'éléments à combustible comprenant plusieurs groupements d'éléments à combustible, p. ex. ensembles modulaires
C25B 9/04 - Dispositifs pour l'alimentation en courant; Connexions d'électrodes; Connexions électriques inter-cellules
C25B 9/18 - Assemblages comprenant plusieurs cellules
An electrochemical cell stack having a plurality of electrochemical cells stacked along a longitudinal axis. The electrochemical cells include a membrane electrode assembly comprising a cathode catalyst layer, an anode catalyst layer, and a polymer membrane interposed between the cathode catalyst layer and the anode catalyst layer. The electrochemical cells also include an anode plate and a cathode plate with the membrane electrode assembly interposed therebetween, and the anode plate defines a plurality of channels that form an anode flow field facing the anode catalyst layer. The electrochemical cells further include a cathode flow field positioned between the cathode plate and the cathode catalyst layer, wherein the cathode flow field comprises a porous structure.
H01M 8/0254 - CollecteursSéparateurs, p. ex. séparateurs bipolairesInterconnecteurs caractérisés par la forme ondulé ou dentelé
H01M 8/026 - CollecteursSéparateurs, p. ex. séparateurs bipolairesInterconnecteurs caractérisés par la configuration des canaux, p. ex. par le champ d’écoulement du réactif ou du réfrigérant caractérisés par les rainures, p. ex. leur pas ou leur profondeur
H01M 8/0265 - CollecteursSéparateurs, p. ex. séparateurs bipolairesInterconnecteurs caractérisés par la configuration des canaux, p. ex. par le champ d’écoulement du réactif ou du réfrigérant les canaux des réactifs ou du réfrigérant ayant des sections transversales variables
H01M 8/0267 - CollecteursSéparateurs, p. ex. séparateurs bipolairesInterconnecteurs comprenant des moyens de chauffage ou de refroidissement, p. ex. des éléments de chauffage ou des canaux d’écoulement du réfrigérant
H01M 8/2483 - Détails des groupements d'éléments à combustible caractérisés par les collecteurs d’admission internes
An electrochemical cell stack having a plurality of electrochemical cells stacked along a longitudinal axis. The electrochemical cells include a membrane electrode assembly having an anode plate and a cathode plate with the membrane electrode assembly interposed therebetween, The electrochemical cells also include an anode plate and a cathode plate with the membrane electrode assembly interposed therebetween, and the anode plate defines a plurality of channels that form an anode flow field facing the anode catalyst layer, The electrochemical ceils further include a cathode flow field positioned between the cathode plate and the cathode catalyst layer, wherein the cathode flow field comprises a porous structure,
H01M 8/0228 - Composites sous forme de produits en couches ou enrobés
H01M 8/0245 - Composites sous forme de produits en couches ou enrobés
H01M 8/0258 - CollecteursSéparateurs, p. ex. séparateurs bipolairesInterconnecteurs caractérisés par la configuration des canaux, p. ex. par le champ d’écoulement du réactif ou du réfrigérant
H01M 8/0265 - CollecteursSéparateurs, p. ex. séparateurs bipolairesInterconnecteurs caractérisés par la configuration des canaux, p. ex. par le champ d’écoulement du réactif ou du réfrigérant les canaux des réactifs ou du réfrigérant ayant des sections transversales variables
H01M 8/2483 - Détails des groupements d'éléments à combustible caractérisés par les collecteurs d’admission internes
The electrochemical cell stack has electrochemical cells stacked along a longitudinal axis. The electrochemical cells have a membrane electrode assembly (MEA) with a cathode catalyst layer, an anode catalyst layer, and a polymer membrane therebetween. The electrochemical cells have an anode plate and a cathode plate with the MEA interposed therebetween, and a cathode flow field between the cathode plate and catalyst layer. The anode plate or the cathode plates are formed of uncoated 316 stainless steel. Portions of the cathode or anode plate have an arithmetic average roughness from about 5 μin to about 35 μin. The cathode flow field is a porous structure. Surface regions on a side of the porous structure facing the MEA are smooth and align with a subgasket of the MEA.
An electrochemical cell stack having a plurality of electrochemical cells stacked along a longitudinal axis, The electrochemical cells include a membrane electrode assembly comprising a cathode catalyst layer, an anode catalyst layer, and a polymer membrane interposed between the cathode catalyst layer and the anode catalyst layer. The electrochemical cells also include an anode plate and a cathode plate with the membrane electrode assembly interposed there between, and the anode plate defines a plurality of channels that form an anode flow field facing the anode catalyst layer. The electrochemical cells further include a cathode flow field positioned between the cathode plate and the cathode catalyst layer, wherein the cathode flow field comprises a porous structure.
H01M 8/0258 - CollecteursSéparateurs, p. ex. séparateurs bipolairesInterconnecteurs caractérisés par la configuration des canaux, p. ex. par le champ d’écoulement du réactif ou du réfrigérant
H01M 8/2483 - Détails des groupements d'éléments à combustible caractérisés par les collecteurs d’admission internes
7.
CATHODE FLOW FIELD DISTRIBUTION FOR FUEL CELL STACKS
An electrochemical cell stack is provided. The electrochemical cell stack has a plurality of electrochemical cells. Each electrochemical cell has a membrane electrode assembly which includes a cathode catalyst layer, an anode catalyst layer, and a polymer membrane interposed between the catalyst layer and the anode layer. Each electrochemical cell also has an anode plate and a cathode plate with the membrane electrode assembly interposed therebetween, and a cathode flow field positioned between the cathode plate and the cathode catalyst layer. The cathode flow field includes a porous structure having a plurality of pores having an average pore size. The plurality of electrochemical cells has a first electrochemical cell positioned at a first end of the electrochemical cell stack. The porous structure of the first electrochemical cell has an average pore size greater than the average pore size of the porous structures of the plurality of electrochemical cells. And, the porous structure of the first electrochemical cell has a flow resistance less than an average flow resistance of the porous structures of the plurality of electrochemical cells.
H01M 8/0228 - Composites sous forme de produits en couches ou enrobés
H01M 8/0258 - CollecteursSéparateurs, p. ex. séparateurs bipolairesInterconnecteurs caractérisés par la configuration des canaux, p. ex. par le champ d’écoulement du réactif ou du réfrigérant
H01M 8/241 - Groupement d'éléments à combustible, p. ex. empilement d'éléments à combustible avec électrolytes solides ou supportés par une matrice
The present disclosure is directed to a fuel cell module. The fuel cell module may include a fuel cell having an anode, a cathode, and an electrolyte positioned between the anode and the cathode. The fuel cell module may also include an enclosure housing the fuel cell therein. The enclosure may include an air inlet and an air outlet. The fuel cell module may further include an air pressurizing mechanism fluidly connected to the enclosure. The air pressurizing mechanism may be configured to draw air through the air inlet into the enclosure and from the enclosure to the air pressurizing mechanism through the air outlet The air pressurizing mechanism may be configured to pressurize the air to form a pressurized air stream that is directed to the cathode.
An electrochemical-cell stack assembly is provided. The assembly has an electrochemical-cell stack and a compression system that holds the electrochemical- cell stack in a state of compression. The compression system has a first endplate and a second endplate positioned at opposite ends of the electrochemical-cell stack. The compression system has a set of tension members coupled to the first endplate and the second endplate that maintain a fixed distance between the first endplate and the second endplate. The compression system has a compression plate disposed between the second endplate and the electrochemical-cell stack. The compression system has a compression member in contact with the compression plate, wherein the compression member is configured to transfer a force to the compression plate. The compression system has a locking nut fastened to the second plate. The locking nut secures the position of the compression member and compression plate relative to the second endplate.
The present disclosure is direct to a bipolar plate of an electrochemical cell. The bipolar plate may have a frame and a base. The bipolar plate may also have a polymeric coating applied to at least one of the frame and the base. The present disclosure is also directed to a method of assembling a bipolar plate for an electrochemical cell, The method may include compressing a frame and a base of the bipolar plate, at least one of the frame and the base has a polymeric coating. The polymeric coating may be an electrical insulator for the electrochemical cell, a seal for sealing one or more zones of the electrochemical cell, and a corrosion protection later of the electrochemical cell.
H01M 8/0202 - CollecteursSéparateurs, p. ex. séparateurs bipolairesInterconnecteurs
H01M 8/0228 - Composites sous forme de produits en couches ou enrobés
H01M 8/0273 - Moyens d’étanchéité ou de support autour des électrodes, des matrices ou des membranes avec des moyens d’étanchéité ou de support sous forme d’un cadre
Embodiments of present disclosure are directed to a bipolar plate assembly. The bipolar plate assembly has a frame and a base. At least one of the frame and the base has a shape of a force concentrator pattern or has a first surface having a force concentrator pattern, the force concentrator pattern including a raised surface extending partially across the first surface. A surface area of the force concentrator pattern across the length of the frame or base is generally constant, thereby producing a uniform compressive pressure along the length of the frame or base when the bipolar plate assembly is under compression.
H01M 8/1004 - Éléments à combustible avec électrolytes solides caractérisés par les ensembles membrane-électrodes [MEA]
C25B 9/06 - Cellules comportant des électrodes fixes de dimensions stables; Assemblages de leurs éléments de structure
C25B 9/08 - Cellules comportant des électrodes fixes de dimensions stables; Assemblages de leurs éléments de structure avec des diaphragmes
H01M 14/00 - Générateurs électrochimiques de courant ou de tension non prévus dans les groupes Leur fabrication
H01M 8/0247 - CollecteursSéparateurs, p. ex. séparateurs bipolairesInterconnecteurs caractérisés par la forme
H01M 8/0273 - Moyens d’étanchéité ou de support autour des électrodes, des matrices ou des membranes avec des moyens d’étanchéité ou de support sous forme d’un cadre
A bipolar plate assembly is provided. The bipolar plate assembly may have a first seal assembly including a first high pressure seal, a second high pressure seal, and an insert plate disposed between the first high pressure seal and the second high pressure seal. The insert plate may have a plurality of ridges formed on an upper surface and a lower surface of the insert plate configured to penetrate into the first high pressure sea! and the second high pressure seal when the first high pressure seal and the second high pressure seal are pressed onto the insert plate, thereby forming the seal assembly. The bipolar plate assembly may also have a frame and a base configured to be joined to form a bipolar plate and define a high pressure zone. The seal assembly when installed in the bipolar plate may be configured to seal the high pressure zone.
H01M 8/0254 - CollecteursSéparateurs, p. ex. séparateurs bipolairesInterconnecteurs caractérisés par la forme ondulé ou dentelé
H01M 8/0273 - Moyens d’étanchéité ou de support autour des électrodes, des matrices ou des membranes avec des moyens d’étanchéité ou de support sous forme d’un cadre
H01M 8/0286 - Procédés de formation des joints d’étanchéité
H01M 8/0276 - Moyens d’étanchéité caractérisés par leur forme
The present disclosure is directed to a burner assembly for generating a heat source. The burner assembly may include a combustion plate having a first surface and a second surface. The combustion plate may include a first plurality of holes extending from the first surface to the second surface arranged in a first circle and a second plurality of holes extending from the first surface to the second surface arranged in a second circle, The first circle and second circle may be arranged in concentric circles. The burner assembly may further be configured to have at least one of the holes having a longitudinal axis extending at a first acute angle from a plane of the combustion plate. The burner assembly may further be configured to have at least one of the holes having the longitudinal axis extending at a second acute angle from a tangent line of one of the concentric circles on the plane of the combustion plate.
F23M 20/00 - Détails des chambres de combustion, non prévus ailleurs
B01J 8/04 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés avec des particules immobiles, p. ex. dans des lits fixes le fluide passant successivement à travers plusieurs lits
14.
METHOD OF FABRICATING CONCENTRIC-TUBE CATALYTIC REACTOR ASSEMBLY
A method of fabricating a catalytic reactor assembly having an outer tube and an inner tube is provided, The method may include inserting a catalyst into the outer tube and inserting the inner tube through the catalyst. The method may further include radially expanding the inner tube against the catalyst.
B01J 8/02 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés avec des particules immobiles, p. ex. dans des lits fixes
B01J 8/04 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés avec des particules immobiles, p. ex. dans des lits fixes le fluide passant successivement à travers plusieurs lits
15.
PRESSURE SWING ADSORBERS WITH FLOW REGULATION BY ORIFICES
A pressure swing adsorption (PSA) system for purifying a feed gas is provided. The PSA system may have a first adsorber bed and a second adsorber bed, each having a feed port, a product port, and adsorbent material designed to adsorb one or more impurities from the feed gas to produce a product gas. The PSA system may also have a network of piping configured to direct the feed gas to the feed ports of the adsorber beds and direct the product gas to and from the product ports of the adsorber beds. The network of piping may also be configured to transfer gas between the first adsorber bed and the second adsorber bed during a pressure equalization step and a purge step. The PSA system may also have a first valve configured to direct flows of the feed gas and the product gas through the network of piping. The PSA system may further have a first orifice configured to regulate a flow rate of gas between the first adsorber bed and the second adsorber bed during at least one of the pressure equalization step and the purge step.
B01D 53/04 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes
B01D 53/06 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants mobiles
16.
GENERATION OF OXYGEN DEPLETED AIR BY A FUEL CELL SYSTEM
The present disclosure is directed to a fuel cell system for generating oxygen depleted air. The fuel cell system may include a fuel cell having an anode, a cathode, and an electrolyte positioned between the anode and the cathode. The cathode may be configured to receive an air flow and discharge an oxygen depleted air flow. The fuel cell system may further include a sensor configured to generate a first signal indicative of a presence of hydrogen in the oxygen depleted air flow and a controller in communication with the sensor and the fuel cell. The controller may be configured to detect the presence of hydrogen in the oxygen depleted air flow based on the first signal, and in response to detecting the presence of hydrogen in the oxygen depleted air flow, selectively cause a current density of the fuel cell to decrease and/or increase a flow rate of the air flow to the cathode.
A method of sealing a multi-component bipolar plate is disclosed. The method may inciude inserting a first seai between a first component and a second component, wherein the first seal is aligned with a first plurality of protrusions formed on a surface of at least one of the first component and the second component. The method may also include compressing the first component and the second component to cause the penetration of the first plurality of protrusions into the first seai. The method may further include piasticaiiy deforming the first seal in order to create a first sealing surface between the first component and the second component,
C25B 1/12 - Production électrolytique de composés inorganiques ou de non-métaux d'hydrogène ou d'oxygène par électrolyse de l'eau dans des cellules sous pression
H01M 8/00 - Éléments à combustibleLeur fabrication
C25B 9/20 - Assemblages comprenant plusieurs cellules du type filtre-presse
H01M 8/02 - Éléments à combustibleLeur fabrication Détails
H01M 8/18 - Éléments à combustible à régénération, p. ex. batteries à flux REDOX ou éléments à combustible secondaires
H01M 8/24 - Groupement d'éléments à combustible, p. ex. empilement d'éléments à combustible
18.
METHODS OF OPERATING PRESSURE SWING ADSORPTION PURIFIERS WITH ELECTROCHEMICAL HYDROGEN COMPRESSORS
In accordance with one embodiment, a method of drying a hydrogen gas mixture is disclosed. The method may include determining a mass flow rate of water mH2O in a hydrogen gas mixture stream and an adsorbent capacity of one or more adsorbent beds; determining a first period of time based on the determined mass flow rate of water mH2O in the hydrogen gas mixture stream and the adsorbent capacity; directing the hydrogen gas mixture stream through a first adsorbent bed of the one or more adsorbent beds for the first period of time; adsorbing a quantity of water from the hydrogen gas mixture stream into the first adsorbent bed; and regenerating the first adsorbent bed.
A system for compressing and drying hydrogen is provided. The system may have a humidifier configured to receive and humidify a concentrated hydrogen stream and produce a first humidified hydrogen stream, The system may also have a compressor configured to receive and compress the first humidified hydrogen stream, and produce a pressurized humidified hydrogen stream. The system may further have a dryer including a first bed configured to in production mode receive the pressurized humidified hydrogen stream, absorb at least a portion of the humidity, and produce a product hydrogen stream. The first bed may further be configured to in regeneration mode receive a portion of the concentrated hydrogen stream to regenerate the first bed, and produce a second humidified hydrogen stream.
C01B 3/56 - Séparation de l'hydrogène ou des gaz contenant de l'hydrogène à partir de mélanges gazeux, p. ex. purification par contact avec des solidesRégénération des solides usés
C25B 1/12 - Production électrolytique de composés inorganiques ou de non-métaux d'hydrogène ou d'oxygène par électrolyse de l'eau dans des cellules sous pression
B01D 53/04 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse avec adsorbants fixes
20.
MULTI-STACK ELECTROCHEMICAL COMPRESSOR SYSTEM AND METHOD FOR OPERATING
A multi-stack electrochemical hydrogen compressor (EHC) system is provided. The EHC system may have two or more EHC stacks, wherein each EHC stack includes at least one eSectrochemical cell and a power supply. The EHC system may also have a controller in communication with the power supply of each EHC stack, wherein the controller is configured to reduce total energy consumption of the EHC system by independently controlling the power supply of each EHC stack.
C25B 15/02 - Commande ou régulation des opérations
C25B 1/10 - Production électrolytique de composés inorganiques ou de non-métaux d'hydrogène ou d'oxygène par électrolyse de l'eau dans des cellules à diaphragme
C25B 9/00 - Cellules ou assemblages de cellulesÉléments de structure des cellulesAssemblages d'éléments de structure, p. ex. assemblages d'électrode-diaphragmeCaractéristiques des cellules relatives aux procédés
C25B 9/20 - Assemblages comprenant plusieurs cellules du type filtre-presse
A flow field for use in an electrochemical cell is disclosed. The flow field includes a porous metallic structure including an inlet port and a plurality of channels stamped in the structure. The plurality of channels is in fluid communication with the inlet port to receive a reactant gas and configured to cause the reactant gas to diffuse through the porous metallic structure between adjacent channels.
A flow field for use in an electrochemical cell is disclosed. The flow field includes a porous metallic structure including an inlet port and an outlet port. The flow field further includes a plurality of first channels formed in the structure. Each of the plurality of first channels extends from a first proximal end in fluid communication with the inlet port and terminates at a first distal end within the structure. The flow field also includes a plurality of second channels formed in the structure. Each of the plurality of second channels extends from a second distal end in fluid communication with an outlet port and terminates at a second proximal end within the structure.
brevets
