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591
results.
Updated on
18/12/2025 [06:49:00]
Results 500 to 525 of 591
Absstract of: WO2025247772A1
The invention relates to an air supply system (10) for a fuel cell stack (2), in particular for a fuel cell stack (2) of an aircraft fuel cell drive (1), comprising an air provision device (20) for providing an air flow for the fuel cell stack (2) and an air feed device (30) which is arranged downstream of the air provision device (20), can be connected to the fuel cell stack (2), in particular to the cathode side thereof, and can conduct air to the fuel cell stack (2), wherein a humidifying apparatus (31) for humidifying the air for the fuel cell stack (2) is arranged in the air feed device (30). One problem addressed by the invention is that of specifying an air supply system for a fuel cell stack which offers greater robustness against the fuel cell stack drying out. According to the invention, an air supply system (10) which solves this problem is provided in that a water injection apparatus (40) for injecting water into the air flow is arranged between the air provision device (20) and the air feed device (30).
Absstract of: WO2025245551A1
A boxer module (10) for an electrochemical cell system (200), comprising a plurality of cell stacks (100) arranged one above another along a boxer direction (BR), each having a fuel section with a fuel supply section (122) for supplying fuel supply gas (KZG) and a fuel discharge section (124) for discharging fuel exhaust gas (KAG) and an air section having an air supply section (132) for supplying air supply gas (LZG) and an air discharge section (134) for discharging air exhaust gas (LAG), wherein at least one common module gas-conducting section (110) is arranged between two cell stacks (100) with a conducting direction (FR) transverse to the boxer direction (BR) such that the module gas-conducting section (110) separates a first module region (M1) with a first subset (T1) of the cell stacks (100) from a second module region (M2) with a second subset (T2) of the cell stacks (100), wherein the module gas-conducting section (110) is in common fluid-communicating connection with the fuel supply section (122), the fuel discharge section (124), the air supply section (132) or the air discharge section (134) of the cell stacks (110) of the two subsets (T1, T2) of the cell stacks (100) along the boxer section (BR).
Absstract of: WO2025247777A1
The invention relates to an assembly (100) comprising: a module (80) comprising a plurality of SOEC/SOFC solid oxide stacks (20a, 20b, 20c, 20d) electrically connected in series, each stack (20a, 20b, 20c, 20d) comprising a gas inlet (EG) and a gas outlet (SG); a heat exchanger (10); a heating device (30) for heating the gases (G), and a bypass duct (40) configured to supply gas (G) in a controlled manner to only a portion of the gas inlets (EG) of the stacks (20a, 20b, 20c, 20d), wherein the bypass duct (40) comprises control means (45) intended to control the supply of gas (G) from the bypass duct (40) to the portion of the gas inlets (EG).
Absstract of: WO2025248200A1
The present invention relates to a proton exchange membrane containing PVDF in powder form, said PVDF being irradiated, grafted and phosphonated, to the method for preparing said membrane, and to the use of said membrane in fields requiring ion exchange, such as electrochemistry or energy-related fields. In particular, this membrane is used in the design of fuel cell membranes, such as proton-conducting membranes for fuel cells operating with H2/air or H2/O2 (these cells being known by the abbreviation PEMFC for "Proton Exchange Membrane Fuel Cell") or operating with methanol/air (these cells being known by the abbreviation DMFC for "Direct Methanol Fuel Cell").
Absstract of: WO2025247610A1
Cell voltage monitoring connector (100) for monitoring a cell voltage of a fuel cell stack (1) having a plurality of alternatingly stacked bipolar plates (2) and membrane electrode assemblies (4), wherein the cell voltage monitoring connector (100) comprises a housing (101) made from an electrically insulating material and at least one electrical contact element (160; 170), which is made from an electrically conducting material and adapted to contact the bipolar plate (2), characterized in that the connector housing (101) has at least one protruding rib (110; 120) which is adapted to be inserted between a bipolar plate (2) and a membrane electrode assembly (4) of the fuel cell stack (1), wherein the at least one protruding rib (110; 120) is equipped with the electrical contact element (160; 170).
Absstract of: WO2025247840A1
The invention relates to a method for operating a fuel cell system having a fuel cell stack and an anode subsystem for supplying an anode region of the fuel cell stack with a hydrogen-containing anode gas, wherein nitrogen-enriched anode gas exiting the fuel cell stack is passively recirculated by means of a jet pump via an anode circuit of the anode subsystem. According to the invention, the following steps are carried out in order to detect an increased nitrogen content of the anode gas: - generating pressure pulses in the anode circuit, which lead to negative pressure jumps, - measuring the voltage at the cell level and/or at the stack level during the negative pressure jumps, and - comparing the measured voltage with a predefined threshold value, wherein it is concluded that the nitrogen content is unduly high if the voltage falls below the threshold value. The invention also relates to a control device for a fuel cell system.
Absstract of: WO2025247580A1
The invention relates to a valve device for a fuel cell system and to a fuel cell system having such a valve device. The valve device comprises a valve housing, a first valve seat and a second valve seat which has a larger valve diameter than the first valve seat. The valve device further comprises a valve closing body, which is movably guided in the valve housing along a longitudinal axis, wherein the valve closing body is designed to close the first valve seat in a closed state, and a servo piston unit, which is guided so as to be movable along the longitudinal axis relative to the valve closing body and through the valve closing body. The first valve seat is arranged in the servo piston unit, and the servo piston unit and the valve closing body interact in such a way that the second valve seat is closed by the servo piston unit and the valve closing body in a closed state.
Absstract of: WO2025247571A1
The invention relates to a method (10) for controlling the operation of an electrochemical system (12) comprising at least one reactant supply line (14) and at least one non-return valve (16) located in the reactant supply line (14). It is proposed that, in at least one method step and during normal operation of the electrochemical system (12), the non-return valve (16) is actuated in order to obtain and/or test a functional capability of the non-return valve (16).
Absstract of: WO2025247884A1
The invention relates to a machining device (10) comprising: at least one machining unit (12), in particular a laser drilling unit, which comprises a laser element (18) and at least one optical element (22), wherein the machining unit (12) is designed to introduce at least one recess into a substrate for an electrochemical cell (16) in at least one operating state; and at least one holding unit (24) which comprises at least one coupling element (50), wherein the at least one coupling element (50) is designed to receive at least one substrate for an electrochemical cell (16). According to the invention, the holding unit (24) has at least one rotatably mounted rotation element (52) which is connected to the at least one coupling element (50).
Absstract of: WO2025247887A1
The invention relates to a method for operating a machining device (10a) comprising: at least one machining unit (12a), in particular a laser drilling unit, wherein, in at least one machining step, at least one through-opening (14a) is introduced into the substrate (16a) for an electrochemical cell by means of the machining unit (12a); and at least one open-loop and closed-loop control unit (20a) by means of which parameters of the machining unit (12a) are adjusted. According to the invention, the machining unit (12a) comprises at least one laser that can emit GHz bursts, wherein the individual laser pulses within the burst train are picosecond laser pulses, wherein, in said at least one machining step, the substrate (16a) for an electrochemical cell is machined by means of the GHz burst laser.
Absstract of: WO2025248508A1
The system comprises a fuel cell including electrodes, a fuel inlet for introducing a non-carbon binding fuel into the fuel cell, an air inlet, an electrolyte inlet, and an outlet for outlet of deplenished electrolyte.
Absstract of: WO2025248012A1
The present invention relates to a proton exchange membrane, to a method for preparing said membrane, and to the use of said membrane in fields requiring ion exchange, such as electrochemistry or energy-related fields. More specifically, the invention relates to a proton-exchange membrane comprising ionic liquids covalently bonded to a polymer containing vinylidene fluoride (PVDF) in powder form.
Absstract of: WO2025247486A1
The invention provides an electrochemical cell unit (10) with the following general features according to which the cell unit comprises: a support structure (14) carrying cell chemistry layers (18, 20, 22). The cell chemistry layers comprise a fuel electrode layer (18), an oxidant electrode layer (20) and an electrolyte layer (22). The electrolyte layer (22) is located between the fuel electrode layer (18) and oxidant electrode layer (20), and the fuel electrode layer (18) is located between the support structure (14) and the electrolyte layer (22). The support structure (14) comprises a porous region (24) surrounded by a non-porous region (26). At least the electrolyte layer (22) of the cell chemistry layers extends past a perimeter of the porous region (24). An active area of the cell chemistry layers comprises at least the fuel electrode layer (18) and the oxidant electrode layer (20). Typically, the electrolyte layer is present in the active area of the cell chemistry layers and is located between the electrode layers.
Absstract of: US2025372679A1
An apparatus for controlling a vehicle is introduced. The apparatus may comprise a fuel cell, a sensor, an air compressor, and a processor configured to drive, based on an input indicating that the vehicle's ignition is on, the air compressor at a specified revolutions per minute (RPM) and control an air flow to prevent from entering the fuel cell, determine, based on sensor information from the sensor, whether a flow of air, driven by the air compressor, entering the vehicle from an outside is within a specified flow range, wherein the specified flow range may comprise a target flow, and change, based on the flow of the air entering the vehicle being outside the specified flow range, a parameter to adjust an oscillation of an output of the vehicle, wherein the output of the vehicle corresponds to the specified RPM.
Absstract of: US2025372666A1
A manufacturing method of a catalyst for fuel cells using an electron beam, a catalyst for fuel cells manufactured thereby, and a membrane electrode assembly for fuel cells including the same, in which the catalyst for fuel cells is manufactured in a one-pot process to improve electrochemical performance and process efficiency of the membrane electrode assembly including the catalyst for fuel cells. The method comprises preparing a precursor dispersion liquid with a support, ceramic precursor, and metal catalyst precursor dispersed in a solvent, synthesizing the catalyst by radiating an electron beam to form ceramic and metal catalyst particles supported on the support, and heat-treating the catalyst. This process results in a catalyst that enhances the electrochemical performance and overall efficiency of the fuel cell's membrane electrode assembly.
Absstract of: US2025372669A1
A thermal management system for a fuel cell vehicle can include a compressor configured to compress refrigerant, a refrigerant-water heat exchanger provided to enable the compressor to suction the refrigerant therein, wherein the refrigerant-water heat exchanger has a first heat exchanger configured to perform heat exchange between the refrigerant and product water from a fuel cell discharge, an accumulator provided to enable the compressor to suction the refrigerant therein, wherein the accumulator has a second heat exchanger configured to perform heat exchange between the refrigerant and the product water, a flow control valve installed on a product water line configured to supply the product water, wherein the flow control valve controls an opening state thereof to selectively supply the product water to at least one of the first heat exchanger and the second heat exchanger, and a controller configured to control the opening state of the flow control valve.
Absstract of: US2025372684A1
An electrolyte membrane can include a porous support and an oligomeric ionomer with which the support is impregnated, and a method of manufacturing the same. The electrolyte membrane can include a support including a reaction product of a benzimidazole-based polymer and a crosslinking agent, and an oligomeric ionomer with which the support is impregnated and containing a proton conductive group.
Absstract of: US2025372683A1
This invention was developed for the technical field of energy production, in which electricity and hydrogen are of great and growing importance. The only input used to produce electricity and hydrogen is water, and the production process is electrochemical, which occurs in a device that is electrified by the water itself. The process is based on the reaction of hydrogen abstraction from water, accompanied by the formation of hydrogen peroxide or oxygen, which occurs in a humid/aqueous environment that contains two electrical conductors separated, but electrically connected to an electrical circuit, with one conductor having a surface with an acidic nature (CA) and the other conductor with a basic nature (CB) of the substances present on the surfaces of the two electrical conductors.
Absstract of: US2025372678A1
A method for filling a coolant to a coolant circuit of a fuel cell system includes filling coolant to the coolant circuit, during filling coolant to the coolant circuit, controlling a fluid pressure in at least one gas path of a fuel cell stack of the fuel cell system.
Absstract of: US2025372668A1
The present invention relates to a fuel cell system (100) for generating electrical energy, comprising a fuel cell stack (110) with an anode section (120) and a cathode section (130), the anode section (120) comprising an anode feed section (122) for supplying anode feed gas (AZG) and an anode discharge section (124) for discharging anode exhaust gas (AAG), wherein the anode discharge section (124) transitions into an anode recirculation section (140) for recirculating the anode exhaust gas (AAG) as anode recirculation gas (ARG) to the anode feed section (122), the cathode section (130) comprising a cathode feed section (132) for supplying cathode feed gas (KZG) and a cathode discharge section (134) for discharging cathode exhaust gas (KAG), wherein an active cooling device (180) is arranged in the anode recirculation section (140) for cooling the anode recirculation gas (ARG), wherein a water outlet (128) is arranged downstream of the active cooling device (180) to discharge the condensation water (KW) condensed in the active cooling device (180), wherein a mixing section (123) is arranged downstream of the water outlet (128) for mixing the anode recirculation gas (ARG) with fuel gas (BRG) and for supplying this, as anode feed gas (AZG), into the anode feed section (122).
Absstract of: US2025372665A1
A method of making a gas diffusion electrode (GDE) for an oxygen reduction reaction involves providing a catalytic composition in particle form having at least iron (Fe) in at least two different degrees of oxidation, optionally the at least two different degrees of oxidation being Fe and Fe2O3, and carbon, the catalytic composition in particle form being obtained from a tribo-oxidation action caused by a friction of a brake pad against a brake disc. The method further involves combining the catalytic composition in particle form with a liquid phase to obtain a catalytic mixture, depositing the catalytic mixture on a backing sheet and letting the catalytic mixture dry.
Absstract of: US2025372673A1
A fuel cell power generation system and a control method thereof. The system includes ammonia decomposition device, ammonia removal device, fuel cell, first membrane humidifier, second membrane humidifier, first gas-water separator and air compressor, the first membrane humidifier is communicated between the ammonia decomposition device and anode of the fuel cell, the second membrane humidifier is communicated between the air compressor and cathode of the fuel cell, the air compressor is configured to feed compressed air into the cathode of the fuel cell; first outlet of the fuel cell is communicated with the anode of the fuel cell, and second outlet of the fuel cell is communicated with ingress of the first gas-water separator, a first egress of the first gas-water separator is communicated with the first membrane humidifier, and a second egress of the first gas-water separator is communicated with the second membrane humidifier.
Absstract of: US2025372685A1
The present invention relates to a method for producing an ion exchange membrane comprising the steps of: a. applying an ionic liquid comprising at least one polymerizable and/or crosslinking group at the cation and/or at the anion on a cellulosic substrate, wherein the cation of the ionic liquid is a heterocyclic aromatic comprising at least one nitrogen as heteroatom, andb. polymerizing and/or crosslinking said at least one polymerizable and/or crosslinking groups forming a polymer or copolymer layer on the cellulosic substrate.
Absstract of: US2025372686A1
This fuel cell (10) comprises a housing, a stack of electrochemical cells, a fixed end plate and a movable end plate (16) clamping the stack between them, and a guidance system (30) of the movable end plate restricting the displacement of the movable end plate perpendicular to a stacking direction (X). To control the positioning of the movable end plate, the guidance system comprises at least one compression member (32) exerting a compression force (E32) on the movable end plate, according to a compression direction (Y), two guide members (36A, 36B), fixed to the movable end plate, and two oblique abutments (38A, 38B), fixed to the housing, extending parallel to the stacking direction and oblique relative to the compression direction and relative to a centering direction (Z). Under the effect of the compression force, the guide members bear against the oblique abutments and center the movable end plate, parallel to the centering direction, relative to the housing.
Nº publicación: US2025369518A1 04/12/2025
Applicant:
PIERBURG GMBH [DE]
PIERBURG GMBH
Absstract of: US2025369518A1
A flap device for a fuel cell system includes a flow housing, a flap shaft projecting into a flow channel, a flap body arranged in the flow channel which is attached to the flap shaft, and a tolerance compensation element. The flap shaft is rotatable about a longitudinal axis. The flap body is adjustable together with the flap shaft at least between a closed and an open position. During an assembly of the flap device, the tolerance compensation element can be fastened to the flap shaft in different positions to bridge a gap between the flap shaft and the flap body, whereby the flap body contacts the tolerance compensation element, or the tolerance compensation element is fastened to the flap body in different positions transversely to the longitudinal axis to bridge a gap between the flap shaft and the flap body, whereby the flap shaft contacts the tolerance compensation element.
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