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532
resultados
Última actualización
27/09/2024 [07:11:00]
Resumen de: US2024322203A1
The invention relates to a method for operating a fuel cell system comprising a fuel cell stack (1), wherein an anode gas containing fresh and recirculated hydrogen is fed to an anode (2) in the fuel cell stack (1) via an anode circuit (3), and liquid water contained in the anode gas is separated by means of a water separator (4) integrated into the anode circuit (3), is collected in a container (5), and is removed from the system by intermittently opening a drain valve (6). According to the invention, in order to detect whether the container (5) is full, the actual temperature of the anode gas in the inlet area (7) of the anode (2) in the fuel cell stack (1) is compared with a desired temperature. If the actual temperature is lower than the desired temperature, the container (5) is considered to be full and the drain valve (6) is opened.The invention further relates to a control device for carrying out the method or individual method steps.
Resumen de: DE102023202570A1
Die vorgestellte Erfindung betrifft einen Wasserabscheider (100) für ein Brennstoffzellensystem (600), wobei der Wasserabscheider (100) umfasst:- eine Kammer (101) mit einer Vielzahl Einlassöffnungen (103, 105),- eine Anzahl Strömungsleitelemente (107), wobei die Vielzahl Einlassöffnungen (103, 105) derart an der Kammer (101) ausgebildet sind, dass durch jeweilige Einlassöffnungen (103, 105) der Vielzahl Einlassöffnungen (103, 105) einströmende Fluidströme miteinander kollidieren, und wobei die Strömungselemente (107) zum Abscheiden von Wassertropfen aus einem durch die Kammer (101) strömenden Fluid ausgebildet sind.
Resumen de: US2024322211A1
A system may condition a plurality of sub-stacks of high-temperature SOEC/SOFC-type solid oxide cells forming a modular stack. Such a system may include: a thermal enclosure; a plurality of sub-stacks; a plurality of end plates, each having an upper face and a lower face, the surface of an upper face being of greater dimension than the surface of a lower face of a sub-stack, and the surface of a lower face being of greater dimension than the surface of an upper face of a sub-stack so as to obtain one or more free surfaces which are not superimposed with a sub-stack; a plurality of die-forming supports, including a recess; a plurality of flexible elements above a recess; a plurality of bearing elements capable of coming into contact with a flexible element so as to deform it.
Resumen de: US2024322209A1
An electrochemical reactor adapted to produce hydrogen on demand, including: a device for storing and supplying hydrogen, which includes: a solid-phase metal M layer, and an aqueous liquid electrolyte € adapted to oxidise the layer of a metal solid-phase M; a main chamber; a control device, adapted to ensure a relative movement between the electrolyte and the metal M layer so as to be able to present the following two configurations: a withdrawal configuration wherein there is a separation between the electrolyte and the metal M layer; and a contact configuration in which there is contact between the electrolyte and the metal M layer in the main chamber.
Resumen de: US2024322210A1
A framed membrane electrode assembly includes a membrane electrode assembly and a resin frame sheet member. The first electrode and the second electrode of the membrane electrode assembly extend outwardly of the entire outer peripheral end of the electrolyte membrane toward the frame sheet member. The outer peripheral portion of the first electrode is joined to one surface of the frame sheet member over the entire periphery. The outer peripheral portion of the second electrode is joined to the other surface of the frame sheet member over the entire periphery.
Resumen de: US2024322206A1
A fuel cell system includes: an anode gas intake path that is linked to a hydrogen circulation path to feed anode gas to an anode of a fuel cell; an anode gas discharge path linked to the anode; a cathode gas intake path for feeding cathode gas to a cathode of the fuel cell; a cathode gas discharge path linked to the cathode; a bypass flow path that links the hydrogen circulation path to the cathode gas intake path and/or the cathode gas discharge path; a circulating pump on the hydrogen circulation path; on-off valves on the anode gas intake path, the anode gas discharge path, and the bypass flow path; and a control device configured to control the on-off valves and the circulating pump. The control device is configured to cause the circulating pump to rotate in a normal or reverse direction selectively to discharge water or water vapor.
Resumen de: US2024322204A1
The invention relates to a method for operating a fuel cell system (100) comprising at least one stack (101) when starting the fuel cell system (100), in particular when during a cold start of the fuel cell system and/or start of the fuel cell system (100) under freezing conditions, in order to bring, in particular to adjust, a coolant temperature (TCoolIn) at the entry point into the stack (101) to a desired stagnation temperature (Ts), the method comprising the following steps:predicting the stagnation temperature (Ts) of the coolant (KM) for various rotational speeds (N) of a coolant pump (31),adjusting the rotational speed (N) of the coolant pump (31) so that the stagnation temperature (Ts) is above the desired value (Ts).
Resumen de: US2024322207A1
Proposed is a fuel cell power control system. A fuel cell generates electric power. A load unit is electrically connected to the fuel cell. A DC/DC converter is disposed between the fuel cell and the load unit to convert the electric power between a low side of the DC/DC converter electrically connected to the fuel cell and a high side of the DC/DC converter electrically connected to the load unit. A battery is electrically connected to the high side of the DC/DC converter to be parallel to the load unit. A controller monitors a voltage of the load unit, the battery, or the high side of the DC/DC converter, and controls the electric power input to the load unit or output from the load unit in accordance with the monitored voltage.
Resumen de: US2024322200A1
Provided are a membrane humidifier cartridge, in which a hollow fiber membrane accommodated in a cartridge may be prevented from being damaged by a fluid, and a fuel cell membrane humidifier including the same. The membrane humidifier cartridge may include an inner case accommodating therein a hollow fiber membrane in which a first fluid flows, and including a material having a first hardness, a potting portion fixing a terminal of the hollow fiber membrane, a first mesh hole portion through which a second fluid is introduced, and including a plurality of windows, and a second mesh hole portion through which the second fluid introduced through the first mesh hole portion is discharged after exchanging moisture with the first fluid through the hollow fiber membrane, and including a plurality of windows. At least any one of the first mesh hole portion and the second mesh hole portion may include a material having a second hardness that is less than the first hardness.
Resumen de: US2024322202A1
An electrochemical cell includes a working electrode, a counter electrode, and an electrolyte covering the working electrode and the counter electrode. The working electrode and the counter electrode are configured so that electrons are supplied from the counter electrode to the working electrode and the working electrode absorbs CO2 in response to a first voltage applied between the working electrode and the counter electrode, and electrons are supplied from the working electrode to the counter electrode and the CO2 is desorbed from the working electrode in response to a second voltage applied between the working electrode and the counter electrode. The working electrode is made of a metal, and a surface of the working electrode that is to be in contact with the CO2 containing gas is covered with an oxide film.
Resumen de: US2024322205A1
The invention relates to a method for operating a fuel cell system (1), comprising a fuel cell stack (2), which has a plurality of fuel cells and through which cooling channels extend, which are fed a coolant via a cooling circuit (3) by means of a coolant pump (4). According to the invention, in the event of a start under cold or freezing conditions the temperature of the fuel cells in the fuel cell stack (2) is measured indirectly by means of the pressure difference (Δp) of the coolant across the fuel cell stack (2) and the rotational speed (n) of the coolant pump (4) is controlled in accordance with the indirectly measured temperature.The invention also relates to a control device for a fuel cell system (1).
Resumen de: US2024322194A1
A method of manufacturing a graphite bipolar plate for a fuel cell or flow battery. A pair of graphite monopolar plates is provided. The monopolar plates are bonded together along opposing contact faces of the monopolar plates. Bonding is carried out using a 1C epoxy resin. Properties of the 1C epoxy resin and/or process parameters may be specially adapted to the application. Particularly, the 1C epoxy resin is adapted to have an activation temperature of at least 50° C.
Resumen de: US2024322301A1
An electrochemical cell utilizes an air flow device that draws air through the cell from a scrubber that may be removed while the system is operating. The negative pressure generated by the air flow device allows ambient air to enter the cell housing when the scrubber is removed, thereby enabling continued operation without the scrubber. A moisture management system passes outflow air from the cell through a humidity exchange module that transfers moisture to the air inflow, thereby increasing the humidity of the air inflow. A recirculation feature comprising a valve allow a controller to recirculate at least a portion of the outflow air back into the inflow air. The system may comprise an inflow bypass conduit and valve that allows the humidified inflow air to pass into the cell inlet without passing through the scrubber. The scrubber may contain reversible or irreversible scrubber media.
Resumen de: US2024322738A1
Disclosed is a power system combining photovoltaic power generation and hydrogen power generation, including: a building, a photovoltaic power generation device being installed on an upper end surface of the building, and a first inverter being installed on an output end of the photovoltaic power generation device through a connecting line; a water electrolysis hydrogen production equipment being installed inside a building, a first hydrogen storage tank being installed on one side of the building, a second hydrogen storage tank being installed on the other side of the building, and an oxygen storage tank being connected to an output end of the water electrolysis hydrogen production equipment through a pipeline. In the disclosure, there is no need to provide a special storage battery to store the electricity generated by photovoltaic power generation.
Resumen de: US2024318668A1
A compressor includes a stack of electrochemical cells each including an anode, a cathode, and an electrolyte membrane sandwiched therebetween, an end plate at an end in a stacking direction of the stack, and a voltage applicator that applies a voltage between the anode and the cathode, wherein, the compressor causes, by using the voltage applicator to apply the voltage, hydrogen in a hydrogen-containing gas fed to the anode to move to the cathode and produces compressed hydrogen, the end plate has a first channel through which a heating medium flows, the stack has a second channel extending therethrough and connected to the first channel, the first channel has a smaller cross-sectional area than the second channel and includes an annular channel and a transverse passage extending across the annular channel, and an external channel disposed outside the stack and through which the heating medium flows is connected to the transverse passage.
Resumen de: US2024322281A1
The present invention relates to a process for the manufacture of a bipolar plate composition. The invention also relates to processes for the manufacture of bipolar plates by injection, extrusion or compression, starting from said composition, and also to the bipolar plates obtained by these processes.
Resumen de: US2024322196A1
Provided is a fuel cell membrane humidifier in which humidification efficiency is improved by preventing differential pressure loss in a humidification module. The fuel cell membrane humidifier performs moisture exchange between a first fluid and a second fluid and includes a mid-case, a second fluid inlet through which the second fluid is introduced into the mid-case, a second fluid outlet through which the second fluid is discharged to outside, a partition wall configured to divide an inner space of the mid-case into a first space and a second space, and at least one cartridge located in the mid-case and configured to accommodate a plurality of hollow fiber membranes therein. A cross-sectional area of the second fluid inlet is equal to or greater than a total area of windows constituting a first mesh hole unit and arranged in a mesh shape in the at least one cartridge for fluid communication with the first space.
Resumen de: US2024322198A1
A membrane humidifier for a fuel cell is disclosed. The membrane humidifier for a fuel cell includes a first housing (10) including a humidity inlet port (12) suctioning a wet flow thereinto and a dry air outlet port (14) discharging dry air, and a second housing (80) correspondingly coupled to the first housing, and including a humidity outlet port discharging a wet flow and a dry air inlet port suctioning dry air.
Resumen de: US2024322195A1
A fuel cell system includes a power module housing including a hotbox cabinet and an auxiliary cabinet, a hotbox disposed in the hotbox cabinet and including a stack of fuel cells, electronic components disposed in the auxiliary cabinet, a system blower configured to provide air into the power module housing, a hotbox air inlet conduit fluidly connecting the system blower to the hotbox, a heat exchanger configured to preheat air in the hotbox air inlet conduit by extracting heat from cathode exhaust output from the hotbox, and a cathode exhaust outlet conduit fluidly connecting a cathode exhaust outlet of the hotbox to the heat exchanger.
Resumen de: US2024322193A1
An electrochemical cell includes a gas permeable member, a metal member, and an electrically conductive member. The gas permeable member through which a reducing gas is permeable has electrical conductivity. The metal member contains chromium and is connected to the gas permeable member. The electrically conductive member is porous and is located between the gas permeable member and the metal member. The electrically conductive member contains metal particles, and a first element whose first ionization energy and free energy of formation of an oxide per mole of oxygen are smaller than those of chromium.
Resumen de: US2024322201A1
An electrochemical cell includes a working electrode, a counter electrode, and an electrolyte covering the working electrode and the counter electrode. The working electrode and the counter electrode are configured so that, in response to a voltage applied between the working electrode and the counter electrode, electrons are supplied from the counter electrode to the working electrode, and the working electrode adsorbs CO2 in association with the electrons being supplied. The counter electrode is not provided with an active material and is made of a porous material.
Resumen de: US2024322208A1
A fuel cell system includes a fuel cell, an electric power recovery device, and a control device that controls the fuel cell and the electric power recovery device. In a state where supplying of the liquid fuel to the fuel cell is stopped, the control device charges post-stop electric power generated by the fuel cell using the liquid fuel that has been already supplied, thereby recovering the post-stop electric power into the electric power recovery device, and thereafter stopping an electrode reaction in an electrode structure of the fuel cell.
Resumen de: US2024322199A1
Disclosed is a fuel cell membrane humidifier which may improve humidification efficiency by preventing a differential pressure loss in a humidification module. A disclosed fuel cell membrane humidifier performs moisture exchange between a first fluid and a second fluid and includes a mid-case, a second fluid inlet configured to introduce the second fluid into the mid-case, a second fluid outlet configured to discharge the second fluid to outside, and at least one cartridge arranged in the mid-case and accommodating a plurality of hollow fiber membranes. A cross-sectional area of the second fluid inlet is formed to be greater than or equal to an inner cross-sectional area of the at least one cartridge excluding a cross-sectional area occupied by the plurality of hollow fiber membranes accommodated in the at least one cartridge.
Resumen de: US2024322191A1
An electrode for a fuel cell system is provided. The electrode includes a carbon support. The carbon support includes carbon particles each functionalized with one or more sulfur and oxygen-containing moieties. Platinum-based catalyst particles are disposed on the carbon support. Ionomer is disposed on the carbon support. A weight ratio of the ionomer to the carbon support is about 0.4 or less.
Nº publicación: DE102023107199A1 26/09/2024
Solicitante:
SCHAEFFLER TECHNOLOGIES AG [DE]
Schaeffler Technologies AG & Co. KG
Resumen de: DE102023107199A1
Eine Vorrichtung zur Montage eines Zellenstapels (7), insbesondere Brennstoffzellenstapels, umfasst eine Handhabungsvorrichtung (2) einschließlich eines Greifers (6) sowie ein Positionier- und Andrucksystem (10), welches zur Komprimierung eines teilfertigen Zellenstapels (7) ausgebildet ist. Das Positionier- und Andrucksystem (10) umfasst eine zur Aufnahme des in einem beliebigen Fertigungsstadium befindlichen Zellenstapels (7) vorgesehene Anhebevorrichtung (11) sowie eine oberhalb der Anhebevorrichtung (11) befindliche seitliche Fixiervorrichtung (12), welche aus mehreren Baugruppen (13, 14) aufgebaut ist, wobei die genannten Baugruppen (13, 14) zur Anlage des Zellenstapels (7) in vertikaler und horizontaler Richtung vorgesehen und in beiden genannten Richtungen verstellbar und feststellbar sind.
BOPI
Sede Electrónica
