1190results about "Reactant parameters control" patented technology

The invention aims to provide a solid hydrogen storage hydrogen closed cycle hydrogen source generator for an underwater vehicle, which belongs to the field of dehydrogenation devices and comprises a reactor, a pressure stabilizing common rail pipe, a hydrogen storage material delivery pump, a solid hydrogen storage material storage unit, a solid hydrogen storage material spraying device, a product collecting device and a hydrogen storage unit. The hydrogen storage material conveying pump is connected with the pressure stabilizing common rail pipe, the solid hydrogen storage material storage unit and the solid hydrogen storage material spraying device, the hydrogen storage unit is connected with the pressure stabilizing common rail pipe, and the reactor is connected with the hydrogen storage unit. The solid hydrogen storage material is used for releasing hydrogen, one part of hydrogen is conveyed to the fuel cell to react for power output of the underwater vehicle, the other part of circulating hydrogen assists the hydrogen storage material in injection, and an underwater closed circulation mode suitable for the underwater vehicle is achieved. The solid hydrogen storage material conveying module and the circulating hydrogen supply module are matched, and rapid mixing of the solid hydrogen storage material and hydrogen and large-flow injection of the solid hydrogen storage material are achieved.

The invention belongs to the technical field of hydrogen energy, and particularly relates to a solid hydrogen storage system with two charging and discharging ends and a working method.The solid hydrogen storage system comprises at least two independent solid hydrogen storage units, and each solid hydrogen storage unit independently communicates with an upstream hydrogen supply pipeline through a first valve set and independently communicates with a downstream hydrogen using pipeline through a second valve set; each solid hydrogen storage unit is selectively communicated with the thermal circulation loop or the cold circulation loop through a third valve group; the first valve group, the second valve group and the third valve group are controlled, so that when the upstream hydrogen supply pipeline has a hydrogen supply demand and the downstream hydrogen use pipeline has a hydrogen use demand, the first solid hydrogen storage unit is configured to be in a hydrogen charging mode, and meanwhile, the second solid hydrogen storage unit is configured to be in a hydrogen discharging mode; the solid hydrogen storage unit in the hydrogen charging mode is communicated with the upstream hydrogen supply pipeline and the cold circulation loop for charging hydrogen, and the solid hydrogen storage unit in the hydrogen discharging mode is communicated with the downstream hydrogen supply pipeline and the hot circulation loop for discharging hydrogen.

An aircraft comprises a fuselage; wings; engines connected to the wings; a set of liquid hydrogen tanks; a vent located on the tail on the fuselage; a conduit system connecting the liquid hydrogen tanks to the vent; and a controller. The controller is configured to control the conduit system to remove gaseous hydrogen in the set of liquid hydrogen tanks to travel through the conduit system and exit at the vent in response to pressure in the set of liquid hydrogen tanks being greater than a specified tolerance.

The present invention provides a dendrite-free zinc-based flow battery. The flow battery includes an anode integrated with a first collector, a cathode integrated with a second collector, a first storage tank comprising catholyte, a first pump connects the cathode and the first storage tank, a second storage tank comprising anolyte and liquid eutectic alloys, a second pump connects the anode and the second storage tank, and a separator to prevent direct contact between the anolyte and the catholyte. The room-temperature gallium-based liquid metals (Ga-LM) alloys enable zinc-based flow batteries (Zn-FBs) to achieve unparalleled areal capacity and exceptionally long cycle life.

The present application provides a solid-state hydrogen storage material and a preparation method and application thereof. Specifically, the preparation method comprises the following steps: (1) ball-milling a magnesium-based alloy powder, a light metal hydride, a nano-carbon material, a composite catalyst powder and an interface modifier to obtain a mixed powder; and (2) sintering the mixed powder under vacuum at 200-350 DEG C for 2-5 hours to obtain a sintered body, wherein: the magnesium-based alloy powder is a Mg-Mn-Al alloy powder; the light metal hydride is a mixture of LiAlH4 and NaBH4; the nano-carbon material is selected from one or more of graphene and carbon nanotubes; the composite catalyst powder is a mixture of TiO2, Fe3O4, CeO2 and La2O3; and the interface modifier is selected from one or more of a silane coupling agent and a titanate coupling agent. The solid-state hydrogen storage material has high hydrogen storage capacity, fast hydrogen absorption and desorption rate and good cycle stability.

Disclosed in the present invention is an integrated reforming power generation test system having wide-range fuel adaptability, comprising a fuel supply subsystem, a catalytic reforming subsystem, a hydrogen purification subsystem, a power generation subsystem, and a test monitoring subsystem. A fuel pump and a fuel delivery pump are connected to a water-gas shift reactor by means of an evaporator and a reformer, the water-gas shift reactor is connected to a pressure swing adsorption device by means of a first gas-liquid separator, the pressure swing adsorption device is connected to a fuel cell stack by means of a hydrogen buffer tank, and a gas chromatograph is connected to the reformer by means of a third gas-liquid separator and to the water-gas shift reactor by means of a second gas-liquid separator. By using a variety of fuel resources to produce electricity, the present invention breaks through the limitation of the scope of traditional single-fuel reforming power generation systems, ensures the reliability of electricity supply, gets rid of the dependence on specific fuels, enhances regional energy safety, and improves the flexibility of energy supply.

Techniques for supplying power to an electrical load include electrically coupling a power supply system to an electrical load. The power supply system includes a chemical energy sub-system including a fuel cell and a fuel storage assembly that stores a fuel, where the fuel cell is configured to generate a first electrical energy output at a first power output; an electrochemical energy sub-system including an energy storage device configured to generate a second electrical energy output at a second power output; and a power control unit electrically coupled to the chemical energy sub-system and the electrochemical energy sub-system and electrically coupled to the electrical load. The method includes operating the power control unit to provide the first electrical energy output or the second electrical energy output to the electrical load.

A power generation system, including: a container having an interior volume; a fuel cell compartment, which is a portion of the interior volume that is defined by one or more fuel-cell-partitions in the container; a fuel cell located within the fuel cell compartment; a battery compartment, which is a portion of the interior volume that is defined by one or more battery-partitions; a battery located within the battery compartment; a control compartment, which is a portion of the interior volume that is: separated from the fuel cell compartment by the one or more fuel-cell-partitions; separated from the battery compartment by the one or more battery-partitions; an outflow vent; and a fan configured to reduce the air pressure in the fuel cell compartment such that air is drawn through the battery compartment and the fuel cell compartment and exits the container through the outflow vent.

Systems and methods are described for powering a load, such as a data center, with renewable energy from a renewable energy source. When the renewable energy is greater than a demand of the load, excess renewable energy is used to power a hydrogen production device or charge a battery depending on whether or not the charge level of the battery satisfies an upper threshold charge level, respectively. When the renewable energy is less than the demand of the load and the charge level of the battery satisfies a lower threshold charge level, the load is powered with energy from the battery. When the renewable energy is less than the demand of the load and the charge level of the battery does not satisfy the lower threshold charge level, the load is powered and the battery is charged with energy generated by the hydrogen-based energy generator.

A propulsion system for an aircraft as disclosed herein may include a nacelle, a shaft positioned centrally within a cylindrical passageway of the nacelle, a fan coupled to one end of the shaft, a turbine coupled to an opposite end of the shaft, an electric motor coupled to the shaft, a compressor positioned within the cylindrical passageway, and a solid oxide fuel cell positioned with a hollow ring-shaped interior of the nacelle. The hollow ring-shaped interior may surround and be isolated from the cylindrical passageway. The turbine may be configured to provide primary torque to the shaft while the electric motor may be configured to provide additional torque to the shaft. The electric motor may be powered an electric output of the solid oxide fuel cell while the turbine may be powered at least in part by output gases from the solid oxide fuel cell.

A work vehicle includes a vehicle body, a fuel cell installed on the vehicle body, a radiator positioned side by side with the fuel cell, and a support that supports the radiator. The support includes a first support connected to the vehicle body and the radiator, and a second support connected to the fuel cell and the radiator.

The disclosure relates to a mobile working machine, in particular a bulldozer or crawler loader, comprising a vehicle chassis, an electric drive system for providing a travelling function and / or a working function of the working machine and an energy storage module, which is configured to supply the electric drive system with electrical energy and / or to store electrical energy provided by the electric drive system. According to the disclosure, the energy storage module has bearing elements, via which it is detachably fastened in a module holder of the vehicle chassis, wherein the bearing elements are arranged laterally raised on the energy storage module and essentially at the level of the centre of gravity of the energy storage module.

Hydrogen is produced by electrolysis of water using electricity generated from a renewable energy source such as wind and / or solar radiation, compressed in a multistage compression system and consumed in at least one downstream process. Supply of hydrogen to the downstream process(es) fluctuates with demand and / or the availability of the renewable energy source. In order to accommodate such fluctuations, excess hydrogen is stored during periods when production of hydrogen exceeds that required by the downstream process(es) so that, during periods when demand exceeds production, hydrogen is removed from storage and, after suitable pressure reduction, fed to the downstream process(es) via a stage of the multistage compression system.

A propulsion system comprises a propulsive hydrogen-burning gas turbine engine, a first tank storing liquid hydrogen with an ullage and a first fuel line including a fuel pump and a vaporiser, the first fuel line providing gaseous hydrogen to the engine during operation of the system. A second tank storing gaseous hydrogen is coupled by a second fuel line to the first fuel line at a position thereon between the vaporiser and the engine, providing for engine start-up (when the vaporiser is inoperative) and power-boosting during operation of the system. A duct connects gaseous hydrogen within the second tank to the ullage in the first tank in order maintain pressure in the first tank as liquid hydrogen within it is depleted, preventing cavitation of liquid hydrogen within the fuel pump.

The application relates to a one-piece reversible fuel cell mode switching control system and method for controlling the conversion of a one-piece reversible fuel cell from an electrolysis mode to a power generation mode, including an electrolysis stopping stage, a purging stage and a power generation starting stage, wherein: in the electrolysis stopping stage, the water passage of the fuel cell is closed, the air compressor or other oxygen source and the air inlet are opened, and the air outlet water flow is less than a threshold value; in the purging stage, the oxygen side of the fuel cell is purged, the water content of the membrane is monitored in real time during the purging process, and the purging gas flow is adjusted to the optimal flow under the water content in real time when the water content reaches different stages; and in the power generation starting stage, the air compressor or other oxygen source is adjusted to the power generation mode, the hydrogen inlet is opened, and power generation is performed. Compared with the prior art, the application simplifies the pipeline design and control process and improves the mode switching efficiency.

A hydrogen supply system includes a detachable hydrogen tank, a hydrogen consumption apparatus that consumes hydrogen in the hydrogen tank, and a control device. The hydrogen consumption apparatus includes a detachment and attachment mechanism that detaches the hydrogen tank from the hydrogen consumption apparatus and attaches the hydrogen tank to the hydrogen consumption apparatus. The detachment and attachment mechanism includes a motor that controls detachment and attachment of the hydrogen tank from and to the hydrogen consumption apparatus. When a torque value of the motor exceeds a threshold during the control of the detachment and attachment of the hydrogen tank from and to the hydrogen consumption apparatus, the control device returns the hydrogen tank to a position where a moving process in which the threshold being exceeded is detected is started.

The invention provides an extended-range solid hydrogen storage hydrogen fuel cell hydrogen thermal coupling power system, which comprises a proton exchange membrane hydrogen fuel cell power generation module used for converting hydrogen and oxygen into electric energy through electrochemical reaction; the alloy solid hydrogen storage and supply module is used for storing hydrogen in a low-pressure safe and high-density manner, releasing heat during hydrogen charging and exchanging heat with external cooling fluid; heat is absorbed during hydrogen desorption and exchanges heat with waste heat of the hydrogen fuel cell, so that hydrogen-heat coupling in the hydrogen supply process is realized; and the hydrogen thermal coupling thermal management module is used for transferring waste heat of the fuel cell to the solid hydrogen storage device so as to support the hydrogen desorption and heat absorption process of the solid hydrogen storage device. The technical problem of alloy solid hydrogen storage in hydrogen supply stability is solved, gas hydrogen can be stably and rapidly supplied to a fuel cell under the working conditions of vehicle starting, climbing or rapid power increasing and the like, power output stability of a system is maintained, and the strict requirement of the traffic power field for power performance is met.

The invention relates to the technical field of lithium air batteries, in particular to a lithium air battery, a battery system and a use method. A lithium air battery includes: a battery case having a positive electrode chamber; and the compression air supply assembly is arranged outside the battery shell, and the compression air supply assembly is communicated with the positive electrode chamber through a pipeline. The invention provides a lithium air battery, a battery system and a use method, and aims to solve the problem of complex internal structure of an existing air compressor.

Method for testing the tightness of a sealing device (54) of a flow chamber component (40) for an electrochemical cell system (11) comprising the steps of: providing a test fluid in a flow chamber (41) of the flow chamber component (40) for the electrochemical cell system (11), wherein the flow chamber component (40) for the electrochemical cell system (11) comprises the sealing device (54) for sealing the flow chamber (41) for the process fluid by having a first component (43) directly or indirectly rest on a second component (44) at a contact area (47), such that the sealing device (54) is formed between the first component (43) and the second component (44) due to the direct or indirect contact between the first component (43) and the second component (44) at the contact area (47); arranging a detection device (50) for the test fluid in a space outside the flow chamber (41).Detect the test fluid flowing from the flow chamber (41) through the sealing device (54) as leakage fluid with the detection device (50), wherein the leakage fluid is directed into a collection chamber (57) bounded by the flow chamber component (40) itself after flowing through the sealing device (54) and the leakage fluid directed into the collection chamber (57) is detected with the detection device (50).

A propulsion system for an aircraft as disclosed herein may include a nacelle, a shaft positioned centrally within a cylindrical passageway of the nacelle, a fan coupled to one end of the shaft, a turbine coupled to an opposite end of the shaft, an electric motor coupled to the shaft, a compressor positioned within the cylindrical passageway, and a solid oxide fuel cell positioned with a hollow ring-shaped interior of the nacelle. The hollow ring-shaped interior may surround and be isolated from the cylindrical passageway. The turbine may be configured to provide primary torque to the shaft while the electric motor may be configured to provide additional torque to the shaft. The electric motor may be powered an electric output of the solid oxide fuel cell while the turbine may be powered at least in part by output gases from the solid oxide fuel cell.

This invention discloses a methane-electric-hydrogen reversible solid oxide fuel cell system with shared system components, belonging to the field of hydrogen energy and energy storage. The system mainly consists of a fuel cell stack, electric heater, mixer, splitter, heat exchanger, and combustion chamber. The system can flexibly switch between power generation and electrolysis modes. Components such as the fuel cell stack, feedwater heat exchanger, fuel heat exchanger, and air heat exchanger are used in both fuel cell and electrolysis modes. The use of shared system components greatly improves the utilization rate of system components, reduces system investment costs, and facilitates thermal management. In this system, hydrogen generated in electrolysis mode is directly stored in natural gas pipelines without the need for hydrogen storage equipment, significantly reducing hydrogen storage costs. This technology is expected to solve the large-scale energy storage problem in the utilization of intermittent renewable energy at low cost, and improve the grid's ability to absorb renewable energy.

The invention relates to a method of operating and / or fueling a compressed gas supply system (34) having at least two compressed gas tanks (15, 16, 17, 18, 19) connected to an anode path (2) of a fuel cell system (1).To increase thermal safety during operation and / or fueling of the compressed gas supply system (34), the valve devices (21, 22, 23, 24, 25) assigned to the pressure tanks (15, 16, 17, 18, 19), which comprise a filling path with an actively switchable filling valve and a discharge path with an actively switchable discharge valve for each of the compressed gas tanks (15, 16, 17, 18, 19) are individually actuated via an electronic control unit, which is connected to a sensor device having at least one sensor, which senses a current temperature in the respective valve installation (21, 22, 23, 24, 25).

Described herein is a safety and support system for a fuel cell module comprising: a pressure-tight safety casing for enclosing the fuel cell module and for containing a fluid; a fuel supply system, arranged to transport fuel to the fuel cell module from an external source; an air supply system, arranged to transport air to the fuel cell module from an external source, an exhaust system, arranged to transport exhaust fluids from the fuel cell module out of the safety casing, and a casing atmosphere system comprising: an inlet into the safety casing having an inlet valve, an outlet from the safety casing having an outlet valve, means for evacuating the fluid from the safety casing through the outlet, and a pressure sensor, arranged for measuring a pressure of the fluid inside the safety casing, wherein the casing atmosphere system is arranged to maintain a below ambient pressure inside the safety casing. Also described herein is a method for preventing an explosive atmosphere inside a safety casing and a fuel cell system for marine applications.

A method for monitoring the state of a redox flow battery system that includes at least two battery modules connected in series. The method includes the following steps: S1: switching at least one battery module out of the series circuit; S2: discharging at least a partial volume of the electrolyte of the at least one battery module that was switched out of the series circuit in step S1, a potential difference being repeatedly detected, the potential difference being formed between a first potential of the negative electrolyte and a second potential of the positive electrolyte of the at least one battery module that was switched out of the circuit; S3: determining, from the potential difference values detected in step S2, the state of health of the at least one battery module that was switched out of the series circuit in step S1.

The invention discloses a data center combined cooling heating and power supply system based on mixed hydrogen energy and a control method thereof, and the system comprises a hydrogen source supply and storage module which is used for inputting hydrogen for power generation, a power generation and energy supply module which is used for converting the hydrogen into electric energy, and a DC micro-grid module which is used for providing the electric energy for a data center. The heat management and application module is used for recycling and applying heat generated during power generation, and the control and protection module is used for controlling the modules. According to the invention, hydrogen energy efficient power generation, waste heat cascade recovery and intelligent scheduling are realized through modular cooperation, the problems of high carbon emission, response delay and energy waste in the prior art are solved, and the system has the advantages of significantly reducing carbon emission, optimizing electric energy use efficiency, improving power supply continuity and energy utilization rate, and simultaneously realizing combined supply of cooling, heating and power.

A hydrogen supply system including: a plurality of hydrogen tanks that is attachable and detachable; a hydrogen consumption device that consumes hydrogen of the hydrogen tanks; and a control device is provided. The hydrogen consumption device includes an attaching-detaching mechanism including a plurality of motors that controls attaching and detaching of the hydrogen tanks with respect to the hydrogen consumption device, the motors corresponding to the attaching and detaching of the respective hydrogen tanks. The control device disposes, based on a temperature of each of the motors, a hydrogen tank of the hydrogen tanks to a hydrogen supply start position at which the hydrogen tank and the hydrogen consumption device are connected in a state in which the hydrogen tank is allowed to supply hydrogen to the hydrogen consumption device, or disposes the hydrogen tank to a hydrogen supply standby position.

The invention relates to the technical field of battery filling, in particular to a movable flow battery filling device control system and method, and the system comprises a buffer tank, a filling control module and a controller; the buffer tank is used for receiving incoming materials through a plurality of feed ports; the filling control module is positioned on the buffer tank, a connecting pipeline of the buffer tank and the target liquid storage tank and the target liquid storage tank, and is used for receiving a control signal of the controller and controlling electrolyte conveying; the controller is used for receiving a flow meter signal on the pipeline and a target liquid storage tank liquid level meter signal, calculating the capacity of the electrolyte flowing into the target liquid storage tank, and sending a control signal to the buffer tank and the filling control module according to the capacity of the electrolyte flowing into the target liquid storage tank and the capacity of the target liquid storage tank; and the filling speed of the electrolyte is subjected to segmented proportional adjustment. According to the invention, the accuracy of the perfusion amount can be ensured.

An electrochemical system includes fuel cell or electrolyzer modules, and a skid supporting the modules.

The present disclosure relates to a check valve including a valve body, a valve poppet, and a gasket. The valve body may include an inlet and an outlet. A valve seat may be disposed at the inlet of the valve body. A fuel passage may connect the inlet to the outlet and be formed inside the valve body. The valve poppet may be disposed in the valve body and configured to open the inlet by moving inside the valve body. The valve poppet may include a flange that extends outward from a bottom portion of the valve poppet. The flange may have a groove on a bottom surface thereof. The gasket may be disposed on an inner surface of the valve body and around the outlet. The gasket may be configured to maintain airtightness while in contact with the valve poppet.

A redox flow battery (1) comprising a cell arrangement (2), a control device (5), and two electrolyte circuits, wherein each electrolyte circuit comprises a tank (3) for storing electrolyte fluid, a piping system, and a pump (4) for circulating electrolyte fluid in the electrolyte circuit, and wherein the piping system comprises a supply line (6.1) from the tank (3) to the cell arrangement (2) and a return line (6.2) from the cell arrangement (2) to the tank (3), and wherein the pump (4) is arranged in the supply line, characterized in that each electrolyte circuit comprises an additional piping line (7) and a shut-off valve (8), wherein the shut-off valve (8) is arranged in the additional piping line (7), and wherein the additional piping line (7) branches off at a first end from the supply line (6.1) in the direction of flow of the electrolyte fluid downstream of the pump (4) and at a second end into the return line (6.1).2) terminates, and wherein the control device (5) is designed to control the closing states of the shut-off valves (8) in order to improve the mixing of the electrolyte fluid stored in the tanks (3) in predetermined operating conditions.