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409
results.
Updated on
22/08/2025 [06:48:00]
Results 350 to 375 of 409
Absstract of: WO2025165486A1
A manifold (130) for routing an operational fluid towards a first group (104) of first fuel cell stacks (106) and a second group (110) of second fuel cell stacks (108). The manifold (130) includes a body (146) defining an inlet passageway (148) and an outlet passageway (160). The inlet passageway (148) defines an inlet (150) for the operational fluid, an inlet header channel (152) extending from the inlet (150), a plurality of inlet conduits (154, 154', 154") fluidly branching out from the inlet header channel (152). Each inlet conduit (154) defines a first fluid inflow port (156) and a second fluid inflow port (158) for routing the operational fluid. The outlet passageway (160) defines an outlet (162) for the used operational fluid, an outlet header channel (164) extending from the outlet (162), a plurality of outlet conduits (166, 166', 166") fluidly branching out from the outlet header channel (164). Each outlet conduit (166) defines a first fluid outflow port (168) and a second fluid outflow port (170) for providing an exit passage to the used operational fluid.
Absstract of: US2025249605A1
A thin plate conveyance apparatus including a suction pad having a contact portion with a rectangular frame shape to come into contact with a thin plate with protrusions and recess arranged in a horizontal direction and generating a suction force by a negative pressure inside the contact portion, and a support part movably supporting the suction pad between a first position where the thin plate is suctioned and a second position where a suction to the thin plate is released. The contact portion includes a pair of first frame portions extending in the first direction and a pair of second frame portions extending in the second direction, and a width of the pair of first frame portions in the second direction is larger than a width of the recesses in the second direction or a width of the protrusions in the second direction.
Absstract of: US2025249411A1
Nanoporous selective sol-gel ceramic membranes, selective-membrane structures, and related methods are described. Representative ceramic selective membranes include ion-conductive membranes (e.g., proton-conducting membranes) and gas selective membranes. Representative uses for the membranes include incorporation into fuel cells and redox flow batteries (RFB) as ion-conducting membranes.
Absstract of: US2025251299A1
To provide a leakage detector that can improve energy efficiency by making it possible to suppress an increase in the number of man hours required in a process of producing a fuel cell stack. A leakage detector 1, 61 includes: a presser 15 configured to press cells of a fuel cell FC, the cells being laminated together and being housed in a fuel cell case C that has a first end that is closed and a second end that is not being closed by a lid; a feeder 61 configured to feed gas to the fuel cell case C while the presser 15 presses the cells of a fuel cell FC at a pressure equal to or higher than a predetermined pressure; and a detector 61 configured to detect leakage of the gas from the fuel cell case C to which the gas is being fed by the feeder 61.
Absstract of: US2025253356A1
A single cell for a fuel cell includes a power generating unit and two separators that sandwich the power generating unit. Each separator includes an opposing surface opposed to the power generating unit. The opposing surface has a gas passage and ribs. The gas passage includes a mesh portion, an inflow portion configured such that reactant gas flows through the inflow portion into the mesh portion, and an outflow portion configured such that the reactant gas flows through the outflow portion from the mesh portion. The ribs forming a lattice pattern include ribs arranged in one direction. A length of each of the ribs arranged in the one direction increases or decreases from the inflow portion toward the outflow portion in a stepwise manner for at least one of the ribs.
Absstract of: US2025253358A1
A fuel cell stack includes multiple stacked single cells. Each single cell includes a power generating unit, a frame member, a first separator, and a second separator. A gasket is provided between the first separator of a first single cell and the second separator of a second single cell. The first separator of the first single cell includes a first projection, and the second separator of the second single cell includes a second projection. The first projection and the second projection project so as to be in contact with each other, thereby suppressing flow of a cooling medium to the outside of the cooling passage. Aback face of at least one of the first projection and the second projection includes a flat surface section that is in contact with the frame member facing the back face.
Absstract of: WO2025162792A1
The invention relates to a cell element (100, 200) for an electrochemical energy converter. The cell element (100, 200) comprises a transport layer (101) and a bipolar plate (103), wherein the bipolar plate (103) comprises a conductive structure (105) for conducting an operating medium, the conductive structure (105) has an at least partly embossed surface (107), and the transport layer (101) is directly welded to the conductive structure (105) in the region of the embossed surface (107) via a platinum-free connection in the form of a number of welding points (109).
Absstract of: WO2025163007A1
The present invention relates to a test chamber (100) for a fuel-cell or electrolyser-type electrochemical generator system (1), wherein the test chamber comprises a power supply system (2), a gas management system (22) and a ventilation system (3), and wherein the test chamber (100) is intended to be arranged on horizontal ground; according to the invention, the test chamber (100) comprises vertical walls (5), a ceiling (6) and an ambient air extraction outlet (8), wherein the ceiling (6) is continuously and hermetically connected to the vertical walls (5), wherein the ceiling (6) is inclined with respect to a horizontal plane, wherein the ambient air extraction outlet (8) is arranged in a region (7) of the ceiling near an apex of the inclined ceiling, and wherein the ambient air extraction outlet (8) passes through the ceiling (6).
Absstract of: WO2025162733A1
The invention also relates to a device (1) for determining and/or measuring the composition of a gaseous medium in an anode circuit (2) of a fuel cell system (31), wherein the device has a sensor element (18), wherein the sensor element (18) determines the measured variable of wall shear stress Tw, in particular by means of a surface hot-film method, of the gaseous medium, and wherein the sensor element (18) is located in a housing (36) of the device (1) and is at least indirectly fluidically connected to the anode circuit (2). According to the invention, the device (1) has at least one Prandtl probe arrangement (7) in addition to the at least one sensor element (18), wherein both elements (7, 18) are located in the housing (36) of the device (1), wherein a partial mass flow (8) of the gaseous medium can be supplied and/or applied to the sensor element (18) by means of an inlet funnel (5) and to the Prandtl probe arrangement (7) by means of a feed channel (20). The invention also relates to a fuel cell system (31) and to a method for operating a device (1) and/or a fuel cell system (31).
Absstract of: US2025253377A1
The invention relates to an electrochemical cell assembly including a first end plate assembly, a stack of cell repeat units, and a second end plate assembly. The stack is held in a compressed state between the first end plate assembly and the second end plate assembly. The first end plate assembly and/or the second end plate assembly each include an end plate. The electrochemical cell assembly includes an insulation plate located between the end plate and the stack. At least one through-hole is provided in the insulation plate and a sealing insert is provided in the at least one through-hole of the insulation plate, the sealing insert defining a fluid pathway along the stacking direction. The invention also relates to an end plate assembly and a method of manufacturing an electrochemical cell assembly.
Absstract of: US2025253376A1
Provided is a method of operating a flow battery. The method includes charging a first active material in the first electrolyte and a second active material in the second electrolyte, where during charging of the second active material a metal impurity is precipitated out of the second electrolyte. The method includes isolating the second electrolyte in a subflow structure of a dynamic fluidic network, where the flow battery is configured to circulate the second electrolyte within the subflow structure while the subflow structure is in isolation from a second electrolyte source. The method includes discharging the second active material, where during discharging the metal impurity is dissolved in the second electrolyte circulating within the subflow structure. The method includes removing the second electrolyte comprising the metal impurity from the subflow structure.
Absstract of: US2025253374A1
A joined base material includes a real base material having an elongated strip shape including a support film and an electrolyte membrane laminated on each other, a dummy base material having an elongated strip shape including a first layer and a second layer laminated on each other, and a connecting member connecting the real base material and the dummy base material to each other. The connecting member includes a first part that adheres to the real base material, a second part that adheres to the dummy base material, and a third part located between the first part and the second part and overlaid on an end portion of the real base material and an end portion of the dummy base material. Adhesive power in the third part is smaller than adhesive power in the first part and adhesive power in the second part.
Absstract of: US2025253359A1
A fuel cell exhaust gas system includes a heat exchanger which can be flowed through by fuel cell exhaust gas, and has first and second heat exchanger end regions. The heat exchanger has a fuel cell exhaust gas inlet region in one heat exchanger end region and a fuel cell exhaust gas outlet region in one heat exchanger end region and includes a first heat exchanger flow volume, leading away from the fuel cell exhaust gas inlet region in the heat exchanger longitudinal direction, and a second heat exchanger flow volume, leading back in the direction of the fuel cell exhaust gas inlet region in the heat exchanger longitudinal direction, the first heat exchanger flow volume being separated from a cooling medium flow volume by a first heat exchanger wall and being separated from the second heat exchanger flow volume by a second heat exchanger wall.
Absstract of: WO2025162686A1
The invention relates to a method for determining the empty state of a container (1) of a water separator (2) during an emptying process, comprising the steps of a) opening a valve (3), in particular a drain valve, arranged on the container (1) in order to initiate the emptying process, wherein water (4) flows out of the container (1), via the valve (3), into a discharge line (5) in a gravity-driven manner, b) throttling the flow in the discharge line (5) with the aid of a throttle (6) integrated into the discharge line (5) and c) detecting the pressure in the discharge line (5) upstream of the throttle (6) and/or d) detecting the pressure drop over the throttle (6), wherein the escape of gas (7) and thus the complete emptying of the container (1) is determined on the basis of a change in the pressure or the pressure drop. The invention further relates to a device (10) for determining the empty state of a container (1) of a water separator (2) and to an anode subsystem (11), comprising a water separator (2) and a device (10) according to the invention for determining the empty state.
Absstract of: WO2025162603A1
The invention relates to a method and a system for diagnosing an electrochemical transducer and to a computer program product. The method (1) for diagnosing an electrochemical transducer comprises exciting (4) the electrochemical transducer using excitation signals and detecting (5) response signals from the electrochemical transducer as a reaction to the excitation signals. The electrochemical transducer is excited (4) only at representative measuring frequencies. In particular, the representative measuring frequencies and the reconstruction are based on eigenvectors or spectra determined by means of a set of EIS measurements. This provides for a high-quality reconstruction of the electrochemical impedance spectrum on the basis of a significantly reduced number of measurements.
Absstract of: US2025253373A1
A carbon dioxide recovery apparatus for recovering carbon dioxide contained in an exhaust gas of a fuel cell system includes: an inlet unit configured to introduce the exhaust gas of the fuel cell system; a heat exchange unit configured to cool the exhaust gas by heat exchange; a first moisture absorbing unit configured to separate condensed water from the exhaust gas; a second moisture absorbing unit configured to absorb moisture of the exhaust gas; a carbon dioxide recovery unit configured to recover carbon dioxide from the exhaust gas; a first gas line connected to an outlet unit through the heat exchange unit, the first moisture absorbing unit, the second moisture absorbing unit, and the carbon dioxide recovery unit in this order from the inlet unit; and a pump provided in the first gas line.
Absstract of: US2025253369A1
A capture device including a body defining a chamber configured to receive liquid and gas from a fuel cell system. The chamber includes an upper end region and a lower end region. An outlet is disposed at the body in fluid communication with the lower end region of the chamber. A gas bypass hose includes a first end in fluid communication with the upper end region of the chamber and a second end in fluid communication with the lower end region of the chamber. A solenoid valve is disposed between the chamber and the outlet. The solenoid valve is operable between an open state permitting fluid communication between the chamber and the outlet to drain liquid and purge gas from the chamber and a closed state preventing fluid communication between the chamber and the outlet.
Absstract of: US2025253368A1
A method for controlling a fuel cell device includes receiving a voltage measured at the time of power generation of the fuel cell device and determining whether the degradation level of the fuel cell device is normal based on a comparison of the voltage and a first threshold value that decreases with increasing operational amount of the fuel cell device and that corresponds to the operational amount of the fuel cell device at the measurement time of the voltage.
Absstract of: US2025253375A1
The present invention provides a method for operating a redox-flow battery system comprising at least two battery modules, wherein the redox-flow battery system comprises a measuring device for providing a measured variable representing a measure of the state of charge of each battery module, and wherein the method comprises the following steps: cyclic operation of the redox flow battery system; detecting measured values by use of the measuring device; carrying out at least two balancing interventions on a battery module during a half cycle; and wherein the last balancing intervention carried out in the half-cycle is of the overcompensating type, and an SoC2 value used for this balancing intervention is predicted with the aid of pre-trained AI.
Absstract of: US2025253371A1
A cooling system includes: a first pump that is provided downstream of a radiator and upstream of an FC stack in a cooling flow path; an adjustment valve regulates a first flow rate of the cooling water flowing from the radiator to the first pump and a second flow rate of the cooling water flowing from a first branch flow path to the first pump; and a second pump that is provided in a second branch flow path, a controller that determines a first transfer amount of the first pump on the basis of the adjustment degree of the adjustment valve and the temperature of the FC stack, and determines a second transfer amount of the second pump on the basis of the adjustment degree and the first transfer amount.
Absstract of: US2025253370A1
A cooling system for a fuel cell onboard a vehicle includes a coolant circuit and a thermal energy storage device in fluid communication with the coolant circuit. The coolant circuit defines a coolant passageway and is configured to circulate a coolant through the coolant passageway and through a portion of the fuel cell to absorb heat from the fuel cell. The thermal energy storage device includes a phase change material configured to store thermal energy released from the coolant flowing through the coolant circuit and through the thermal energy storage device in the form of latent heat. The phase change material is configured to dissipate thermal energy stored therein to a circumambient airflow flowing relative to the vehicle when the vehicle is moving.
Absstract of: US2025253439A1
A temperature control arrangement for controlling the temperature of at least one component may include a temperature control circuit, a conveyor configured to drive a temperature control agent in the temperature control circuit, and a storage tank for intermediate storage of the temperature control agent. The storage tank may include a housing surrounding a housing interior, a fluid inlet arranged on the housing, a fluid outlet arranged on the housing, and at least one molded body composed of an open-pored foam and through which the temperature control agent is flowable. The fluid inlet may have an inlet opening via which the temperature control agent is introducible into the housing interior. The fluid outlet may have an outlet opening via which the temperature control agent is dischargeable after passing through the housing interior. The at least one molded body may be arranged in the housing interior.
Absstract of: US2025253360A1
A storage container includes a housing that encloses a housing interior, through which the temperature control agent can flow for intermediate storage. The housing includes a fluid inlet and outlet, each with respective openings for introducing and discharging the temperature control agent. A housing opening provides fluid communication between the housing interior and the external environment. A sealing element is positioned in the housing opening to seal it in a fluid-tight manner when arranged. A drying device, positioned on the sealing element, absorbs moisture from the temperature control agent within the housing interior. The drying device is arranged within the housing interior, while the sealing element remains positioned in the housing opening.
Absstract of: US2025253367A1
Methods, devices, controllers, vehicles, and media for determining the anode water condition of a fuel cell system are disclosed. The method includes (i) determining the anode inlet humidity of the fuel cell system, (ii) determining the separation efficiency of a water-gas separator of the fuel cell system, and (iii) determining the condition of the water at the anode of the fuel cell system based on the anode inlet humidity and the separation efficiency of the water-gas separator. In this way, the possibility of flooding at the anode can be determined in advance of the damage to the stack, thereby enabling timely application of appropriate protective measures to reduce the damage to the stack from the flooding.
Nº publicación: US2025253365A1 07/08/2025
Applicant:
GM GLOBAL TECH OPERATIONS LLC [US]
GM Global Technology Operations LLC
Absstract of: US2025253365A1
A duct for a fuel cell includes a duct body defining an aperture configured to allow fluid to flow therethrough. The duct body includes a flexible network configured to provide adjustable flexibility to the duct body. Additionally, a surface coating is disposed on an outer surface of the duct body. Moreover, the surface coating provides the duct body with one or more of flame retardance and structural integrity.
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