1288 results about "Hydrogen supply" patented technology

The invention discloses a direct-current hollow electrode hydrogen plasma furnace mineral powder smelting system and method and application, and belongs to the technical field of hydrogen metallurgy. The system comprises a hollow electrode gas powder injection hydrogen plasma gun system, a direct current bottom electrode ore-smelting electric furnace system, a fine ore and hydrogen supply system and the like. The hollow electrode and the furnace bottom electrode form a direct-current arc, hydrogen carrying mineral powder is sprayed into an arc area to generate high-temperature hydrogen plasma, mineral powder reduction is achieved, and metal and slag are separated. According to the method, hydrogen serves as a reducing agent, carbon emission is reduced, the reaction efficiency is high, energy consumption is low, and the method can be used for steelmaking, smelting of micro-carbon ferromanganese and titanium slag and recovery of valuable metal in nonferrous smelting waste slag and has good green metallurgy application prospects.

The invention relates to the technical field of automobile energy supply, in particular to a solid hydrogen storage-fuel cell integrated power assembly system based on dual-mode hydrogen supply, which comprises a hydrogen supply path identification module, a hydrogen storage unit state monitoring module, a linkage path switching module, a fuel cell load matching module and a safe hydrogen discharge regulation and control module. According to the method, the hydrogen supply pressure difference value is obtained by dynamically comparing the pressure of the cavity of the hydrogen storage tank with the pressure of the hydrogen inlet of the fuel cell, the current hydrogen supply path state can be accurately recognized in the early stage, rapid judgment of the hydrogen supply mode and accurate control of path switching are achieved, whether the risk of hydrogen supply interruption exists or not can be effectively screened, and the reliability of hydrogen supply is improved. The switching reliability of a hydrogen supply channel is improved through cross comparison of key state signals of a main channel and a standby channel, and instant response and energy consumption optimization of hydrogen discharge safety regulation and control are guaranteed through a linkage feedback mechanism between the hydrogen concentration change rate in unit time and catalytic converter control power.

The invention relates to the technical field of hydrogen storage system testing, and discloses a one-way valve combined hydrogen storage system durability test bench and a test method. A main control computer of the rack is used for configuring test task parameters, coordinating operation of subsystems and processing test data; the high-pressure hydrogen supply subsystem comprises a pressure-adjustable hydrogen source and a pressure closed-loop control module, and can apply accurate and controllable hydrogen pressure to the inlet end of the tested system according to test task parameters; the multi-channel valve state acquisition subsystem acquires the inlet and outlet pressure of the valve, the surface temperature of the valve body and vibration spectrum data in real time through pressure, temperature and vibration sensor arrays arranged at the valves, and transmits the data to the main control computer; the valve action driving subsystem comprises a high-speed electromagnetic actuator array and a displacement feedback module and can drive all valves to execute a preset opening degree sequence and opening and closing frequency. And the durability evaluation subsystem is embedded into the main control computer, calculates the accumulated damage degree of the valve and predicts the residual life cycle.

The utility model provides a compound device for providing feed gas for preparing green ammonia from new energy and a green ammonia synthesis system. The composite device comprises a deep cooling air separation nitrogen generation subsystem, a hydrogen supply subsystem and a main heat exchanger, and the hydrogen supply subsystem comprises a water electrolysis hydrogen generation unit, a first hydrogen compressor, a second hydrogen compressor, a hydrogen storage tank and a hydrogen conveying pipeline. The hydrogen conveying pipeline comprises a first hydrogen conveying pipeline, a second hydrogen conveying pipeline and a third hydrogen conveying pipeline; the main heat exchanger is a multi-channel heat exchanger and comprises a first flowing channel used for flowing of a first medium and a second flowing channel used for flowing of a second medium, the second hydrogen compressor is connected with the hydrogen storage tank through the first flowing channel, and the hydrogen storage tank is connected with the third hydrogen conveying pipeline through the second flowing channel. The composite device provided by the utility model can ensure the supply stability of the raw material hydrogen of the ammonia production subsystem, and solves the technical problem that the hydrogen supply is unstable in the existing green ammonia synthesis process.

The invention provides a hydrogen supply control method of a fuel cell system, a controller, a system and a medium, and relates to the technical field of fuel cells. The method comprises the steps that in response to a starting instruction, the opening degree proportion of a first proportional valve is controlled to be adjusted to K11 from K10 through a first PID control parameter, K10 is the opening degree proportion of the first proportional valve which does not allow hydrogen to pass at all, and K11 is the initial opening degree proportion of the first proportional valve at the current environment temperature; obtaining a current actual pile entering pressure value and a hydrogen pile entering pressure set value of the electric pile; the second PID control parameter is used for controlling the opening proportion of the first proportional valve to be adjusted till the deviation between the actual reactor entering pressure value and the hydrogen reactor entering pressure set value is within the allowable error range, and the proportionality coefficient of the first PID control parameter is larger than that of the second PID control parameter. According to the method, the stability of hydrogen pressure is improved, so that the stability and the service life of the fuel cell system are improved.

The invention relates to a semi-supervised learning data anomaly intelligent identification and treatment system, which is applied to a hydrogen energy commercial vehicle, and comprises a data acquisition and preprocessing module, which is arranged on a vehicle-mounted terminal and is used for acquiring a hydrogen storage system signal, a hydrogen supply system signal, a fuel cell system signal and a whole vehicle system signal in real time, processing the acquired signal data; the semi-supervised anomaly recognition module is arranged on a cloud platform, is connected with the data acquisition and preprocessing module, and is used for fusing the processed signal data into a rule engine and semi-supervised learning, constructing a semi-supervised training data set, and performing deep auto-encoder model training through the data set so as to realize accurate anomaly recognition of few sample scene writing; and the exception treatment and feedback module is arranged at an edge node, is connected with the semi-supervised exception recognition module, carries out exception recognition through a trained model, carries out graded treatment according to the exception severity, and establishes a model evolution mechanism to realize continuous optimization of the system.

The invention discloses a dual-fuel engine combustion control method based on hydrogen-ammonia energy ratio and gas distribution overlap angle regulation and control, which comprises the following steps: 1) fuel ratio control: acquiring current operation state parameters of an engine, determining a target AER according to preset mapping, regulating ammonia gas supply quantity and hydrogen supply quantity to enable the actual AER to reach the target AER, and controlling the fuel ratio; the AER is adaptively set according to engine load and combustion stability conditions; 2) valve timing control: adjusting the opening time of an intake valve or the closing time of an exhaust valve through a variable valve timing mechanism so as to change a valve timing overlap angle VOA, wherein the VOA is set to be a negative value, a small overlap angle or a positive overlap angle according to the working condition of an engine; (3) injection time sequence optimization is conducted, specifically, the injection time of ammonia gas and the in-cylinder direct injection time of hydrogen are controlled respectively, and coordinated optimization of a fuel injection strategy and valve timing is achieved; and 4) closed-loop steady-state control: monitoring a combustion state and an emission index in real time, comparing the combustion state and the emission index with a threshold value to serve as a feedback signal, and correcting the target AER and VOA settings in time. According to the dual-fuel engine combustion control method based on regulation and control of the hydrogen-ammonia energy ratio and the gas distribution overlapping angle, the energy ratio of hydrogen fuel and ammonia fuel and the overlapping opening angle of an intake valve and an exhaust valve are dynamically adjusted under different working conditions, so that the combustion reaction rate and temperature are coordinated, and the stable and efficient combustion process is achieved; and harmful emissions of NOx, unburned ammonia and the like are obviously reduced.

The invention relates to the technical field of hydrogen energy, in particular to a non-catalytic solid hydrogen storage material hydrogen release system and application thereof. The water storage unit is connected with the PEM hydrogen fuel cell reaction unit through a first pipeline; the non-catalytic hydrogen release unit is connected with the water storage unit through a second pipeline; a flow pump and a first electromagnetic valve are arranged on the second pipeline; the first electromagnetic valve is jointly controlled by a pressure sensor and a first flow controller; and the hydrogen buffer unit is connected with the non-catalytic hydrogen release unit and the PEM hydrogen fuel cell reaction unit through a third pipeline and a fourth pipeline respectively. The quick response and efficient hydrogen supply effects of the system are realized by utilizing the characteristic that the non-catalytic solid hydrogen storage material quickly releases hydrogen at a second level under the conditions of near room temperature and low pressure; wastewater generated by the PEM hydrogen fuel cell reaction unit is used as a reaction reagent of the non-catalytic hydrogen release unit, so that water circulation is realized, the amount of water initially carried by the system is reduced, and the weight of the system is reduced.

The invention belongs to the technical field of functional sugar alcohol hydrogenation, and particularly relates to a system and a method for intelligently controlling a reaction kettle in a functional sugar alcohol hydrogenation process. Comprising a temperature sensor TT, a pressure sensor PT, a liquid level sensor LT, a hydrogen concentration sensor TZT and a spectrum sensor, and the sensor networks are arranged on a reaction kettle body, a feeding pipeline, a condenser and a hydrogen recovery device. The device is used for collecting temperature, pressure, liquid level and hydrogen concentration in the reaction kettle and spectral data of an outlet sugar alcohol product in real time. The control execution layer comprises a PLC (Programmable Logic Controller), a dynamic valve controller, temperature control equipment and a stirrer speed regulation module; and the dynamic valve controller is connected to the hydrogen supply pipeline and the feeding pump. The hydrogen flow, the temperature and the stirring speed are adjusted in real time through AI dynamic optimization, the sugar alcohol conversion rate is increased to 5%, and the conversion rate fluctuation range is reduced to + / -0.5%.

The invention discloses a hydrogen refueling station compressor bypass current-limiting pressure-stabilizing pressurization system and method, and belongs to the technical field of hydrogen energy storage and filling. The technical problems that when an existing hydrogen refueling station switches hydrogen storage bottle sets of different pressure grades, due to the fact that the pressure of an outlet of a compressor suddenly changes instantly, equipment operation is unstable, the service life is shortened, the operation efficiency is low, and equipment abrasion is serious are solved. The bypass pipeline is arranged between the compressor outlet pipeline and the multi-stage hydrogen storage bottle group, so that a temporary flow limiting system is constructed; the intelligent controller adopts a PLC (Programmable Logic Controller), a DCS (Distributed Control System) or a special controller, is equipped with a human-computer interface, and accurately and automatically regulates and controls the opening and closing of valves on the main hydrogen supply pipeline and the bypass pipeline, so that the outlet pressure of the compressor is stably transited during switching, and the automatic control and operation convenience of the system are realized. Pressure fluctuation can be greatly inhibited, stable operation of the compressor is guaranteed, the service life of the compressor is prolonged, the equipment failure rate can be reduced, the overall operation efficiency of the hydrogen refueling station is improved, and stable development of the hydrogen energy industry is promoted.

To provide an electrochemical hydrogen booster system in which a regenerated hydrogen gas can be utilized without being discharged to the outside as waste and the decline of a hydrogen production efficiency of the electrochemical hydrogen booster system can be suppressed.SOLUTION: An electrochemical hydrogen booster system 10 comprises: a hydrogen booster stack 16 for releasing a hydrogen gas supplied to an anode electrode as a highly pressured hydrogen gas boosted from a cathode electrode through a polymer electrolyte; a hydrogen supply apparatus 14 for supplying the hydrogen gas to the anode electrode of the hydrogen booster stack 16 through a hydrogen supply flow path 60; a PSA apparatus 22 including multiple adsorption towers 24 for dehumidifying the highly pressurized hydrogen gas released from the hydrogen booster stack 16; and a return flow path 94 for recycling a regenerated hydrogen gas utilized for the regeneration in the adsorption tower 24 into the hydrogen supply flow path 60 or the hydrogen supply apparatus 14.SELECTED DRAWING: Figure 1

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.

The invention provides a multi-source situation fused fuel cell test method, which comprises the following steps of: establishing target working condition parameters by controlling a hydrogen supply unit, an air supply unit and a cooling water unit, and collecting corresponding sensor data in real time; a plurality of types of sensors for hydrogen concentration, temperature and humidity, air quality, cooling water temperature, experimental environment and the like are arranged in a fuel cell testing system, data of the sensors are input into a control unit after being subjected to time synchronization and normalization processing, and weight factors of the sensors are dynamically adjusted in different testing stages; and the control unit performs weighted fusion on the multi-source state information, constructs a comprehensive situation index, performs trend analysis on a future state in combination with a time sequence prediction model, and judges that the system is in a normal, early warning or dangerous state. According to the method, multi-source data fusion and prediction can be realized in the fuel cell test process, and the test safety and the intelligent level are effectively improved.

The present invention discloses a fuel cell engine, which comprises a fixed frame. The fixed frame includes a first side fixing plate, a second side fixing plate, a third side fixing plate and a fourth side fixing plate; a fuel cell, which includes a housing, an electric stack, a distributor, and a first end cap and a second end cap that are opposite in the third direction; a hydrogen supply system, which is installed on the first side fixing plate; a cooling circulation system, which is installed on the first side fixing plate; an air supply system, which is installed on the third side fixing plate; and a power distribution device, which is installed on the second side fixing plate. The fuel cell engine according to the embodiment of the present invention has the advantages of high integration, compact structure, high volume power density, small volume, easy assembly, high strength, good seismic resistance, etc.

The invention relates to the technical field of vehicle power systems, in particular to a solid hydrogen storage device containing a low-temperature cold-start hydrogen storage cylinder and a fuel cell collaborative power assembly, and the device comprises a heat flow modulation module, a balance driving module, a release coordination module, a power matching module and a power assembly control module. In the hydrogen storage process, through real-time linkage judgment of the interface temperature difference and the heat flux change, directional feedback of energy in different areas is achieved, the stable hydrogen release condition of the hydrogen storage material is maintained, differentiated distribution is conducted on heating power according to the heat flux density deviation, invalid energy consumption and local energy accumulation are avoided, and the energy storage efficiency is improved. Dynamic balance is constructed between the hydrogen release rate and the phase change medium energy absorption rate, the hydrogen supply process is corrected through filtering estimation, the release flow is more stable and controllable, finally, the hydrogen supply stability and the load requirement are combined in the power output link, dynamic matching of the galvanic pile power and the external working condition is achieved, and the energy efficiency is improved. And the response flexibility and the energy conversion efficiency of the power system are improved.

The invention relates to the technical field of aviation aircraft power systems, and discloses an aero-engine liquid hydrogen fuel conveying system and a control method thereof, which adopt multi-branch high-precision metering to realize wide-range high-precision flow regulation requirements, determine branch through-flow capability by a root order method, and realize high-precision flow regulation of the aero-engine liquid hydrogen fuel conveying system. The number of hydrogen supply branches, the available regulation ratio of the regulating valve and the total flow regulation ratio demand are matched, and the problem of high-precision fuel conveying in an extremely wide flow regulation range is solved. The circulating coupling heat exchanger is adopted to reasonably utilize waste heat of the system to raise the temperature of hydrogen fuel to the level suitable for combustion, reasonable optimization of heat / energy utilization of the system is achieved, fuel consumption is reduced, and circulating heat efficiency is improved. The hydrogen temporary storage tank is adopted to solve the problem that the supply flow of an upstream liquid hydrogen pump and a heat exchanger is not matched with the flow required by a downstream regulating valve due to hysteresis in the heat exchange process in the fuel flow regulation transient process.

The invention provides aero-engine hydrogen doping experimental equipment based on integration of hydrogen production, hydrogen storage and hydrogen supply, which belongs to the technical field of combustion engine control and comprises an experiment generating device, a hydrogen supply device and a control system. The experiment generation device comprises an engine to be experimented; the hydrogen supply device comprises a support unit, a hydrogen production unit, a hydrogen storage unit and a hydrogen supply unit. The hydrogen production unit is used for producing hydrogen; the hydrogen storage unit is communicated with the hydrogen production unit and the hydrogen supply unit and is used for storing and conveying hydrogen; the hydrogen supply unit is used for supplying hydrogen to the engine; a moving unit is arranged at the bottom of the bracket unit and is suitable for driving the hydrogen supply device to move; wherein the hydrogen storage unit comprises a first detection piece, and the first detection piece is suitable for detecting the hydrogen storage pressure of the hydrogen storage unit; the control system is connected with the hydrogen supply device so as to control the hydrogen supply device to operate according to the detection result of the first detection piece. According to the invention, limitation of a laboratory can be broken through, and experiment safety and convenience are improved.

The invention relates to the technical field of vehicle power, in particular to a vehicle power system based on a variable-volume solid hydrogen pool and a control method.The vehicle power system comprises a power driving module, a power battery module, a solid hydrogen pool module and a whole vehicle control module, and the power battery module comprises a hydrogen fuel power battery and a pure electric power battery; the solid hydrogen pool module comprises a material supply unit, a plurality of hydrogen release units, a tailing unit and a hydrogen supply unit, each hydrogen release unit comprises a hydrogen release pool, a separator and a driving part, the separator is driven by the driving part to move and dynamically increases or decreases the volume of the reaction chamber, each hydrogen release pool is connected with the hydrogen conveying side of the hydrogen fuel power battery, and the tailing unit is connected with the hydrogen supply unit. The tail drainage end of the hydrogen fuel power battery is connected with the water tank, and the whole vehicle control module controls the modules to operate dynamically in a closed-loop mode according to the power requirement of a target vehicle. According to the device, hydrogen fusion can be controlled, so that hydrogen release by adding water becomes possible, the hydrogen storage density is greatly improved, and the cruising ability of a vehicle power system is improved.

The invention discloses a hydrogen deep hypothermia three-loop refrigeration device and method, and relates to the technical field of hydrogen liquefaction. The device comprises a raw material hydrogen supply system, an ortho-parahydrogen conversion system, a three-loop hydrogen refrigerating system, a liquid hydrogen collecting and supercooling system and a gas recycling system. Wherein the raw material hydrogen is sequentially cooled by the pre-cooling cold box and the multi-stage heat exchanger and then enters the ortho-parahydrogen converter to be converted into parahydrogen, and then the parahydrogen is subjected to flash separation to obtain a liquid hydrogen product. The three-loop refrigerating system adopts three modes of high-pressure hydrogen expansion, medium-pressure liquid hydrogen throttling and low-pressure flash steam recovery to supply cold synergistically, and precise matching of the cold capacity of different temperature zones is achieved. Hydrogen is adopted as a refrigerant, the refrigerant cost is low, the heat exchange temperature difference is reduced through three-loop collaborative refrigeration, the flash evaporation loss is reduced, meanwhile, the system stability and the liquid hydrogen quality are improved through expansion work recovery and full parahydrogen conversion, and the system is suitable for large-scale liquid hydrogen preparation.

The invention discloses a low-temperature quick-start solid hydrogen storage device which comprises an insulating heat preservation shell and further comprises a solid hydrogen storage tank, a gaseous hydrogen storage tank, an air-cooled hydrogen fuel cell, a hydrogen supply mechanism and a heating mechanism, the solid hydrogen storage tank and the gaseous hydrogen storage tank are fixedly arranged in the insulating heat preservation shell, the solid hydrogen storage tank is filled with hydrogen storage alloy powder, and the air-cooled hydrogen fuel cell is arranged in the insulating heat preservation shell. A gas communicating pipe is fixedly arranged between the gaseous hydrogen storage tank and the solid hydrogen storage tank, a one-way valve is arranged in the gas communicating pipe, the air-cooled hydrogen fuel cell is arranged on one side of the insulation heat preservation shell, and the low-temperature quick-start solid hydrogen storage device is used for solving the problem that in the prior art, a solid hydrogen storage bottle is poor in hydrogen desorption performance in a low-temperature environment.

The invention discloses a fuel cell low-temperature shutdown purging method, device and system, a cell and a carrier, and the purging method at least comprises the following steps: the fuel cell runs with 0.15-0.18 standard current density, ventilation and gas flow control correspond to gas flow under 1.2-1.4 standard current density, the temperature of an electric pile cooling liquid outlet is controlled to be maintained at 60-65 DEG C, the fuel cell is subjected to low-temperature shutdown purging, and the fuel cell is subjected to low-temperature shutdown purging. When the average voltage is less than or equal to 0.7 V, carrying out load reduction; after the load is reduced to 0.03-0.04 standard current density, the gas flow is set to be 0.03-0.04 standard current density, then air supply is closed, and when the average voltage of the single body is reduced to be not higher than V0, load current and hydrogen supply are closed; when the temperature of an electric pile cooling liquid outlet is reduced to 5-20 DEG C, the gas flow is set to be 0.05-0.3 standard current density, and on-load purging is not carried out; and when the average voltage of the monomer is not higher than V0, loading again to 0.03-0.04 standard current density, setting the gas flow to 0.03-0.04 standard current density, then closing the air supply, and when the average voltage of the monomer is reduced to be not higher than V0, closing the load current and closing the hydrogen supply. According to the invention, the initial water content of the electric pile can be effectively reduced, and liquid water condensed by water vapor in the electric pile due to cooling can also be effectively removed.

The invention relates to a design scheme suitable for an electric heating device matched with a hydrogen-based shaft furnace for reducing iron ore, belongs to the technical field of hydrogen metallurgy for directly reducing a hydrogen-based shaft furnace, and aims to solve the problem that the service life of a heating furnace is influenced by aging of a heating rod due to high-temperature reaction between hydrogen and the heating rod. The hydrogen electric heating furnace adopts a separated structure design, hydrogen flows in a nickel-based alloy heating pipeline, and a silicon carbide rod is arranged in a heating furnace cavity, so that the surface of the heating rod is prevented from reacting with high-temperature hydrogen and water vapor; the heating furnace tube adopts a snake-shaped structure, so that the heat exchange area is increased, the deformation of the high-temperature furnace tube is compensated, and the stability of the whole heating furnace is improved; the heating furnace adopts multi-zone temperature control, and heating elements are uniformly distributed in the furnace, so that the temperature in the heating furnace is uniform, and the precision temperature control of + / -5 DEG C of the hydrogen outlet temperature is realized; the heating furnace cavity is protected by nitrogen, inlet hydrogen supply is cut off in time when hydrogen leaks, a safety linkage nitrogen valve is used for purging, and the overall safety of the heating furnace is improved. Through the design mode of the heating furnace, the durability and the safety of the pure hydrogen electric heating equipment are improved.

The invention discloses a heavy-load hydrogen-electricity hybrid power system of an industrial unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicles, the core comprises a fuel cell, a lithium battery pack, a driving motor and three modules, the fuel cell and the lithium battery pack are connected in parallel with the driving motor, and a dynamic variable liquid cooling system is thermally connected with the fuel cell. The intelligent mission profile prediction module and the liquid cooling system are both in signal connection with the thermal-electric collaborative optimization controller, the prediction module receives data such as an air route and weather, simulates a flight state in a future time period through a model, and outputs predicted power and a temperature curve; the liquid cooling system comprises at least two independent heat dissipation partitions and is integrated with a paraffin-based composite phase change material, the optimization controller outputs optimal parameters through a task-adaptive multi-objective optimization function based on a prediction curve and real-time data, and the system is provided with a data acquisition module, a hydrogen supply control module and a fault early warning module to realize data monitoring, hydrogen supply stability and safety early warning. And the load, endurance and reliability are improved.

The invention relates to a multi-target control method for a fuel cell hydrogen supply system based on switching type model prediction. The method comprises the following steps: S1, constructing a high-order nonlinear model of the fuel cell hydrogen supply system; s2, obtaining a high-load linear sub-model and a low-load linear sub-model; s3, converting the high-load linear sub-model and the low-load linear sub-model into a high-load model prediction controller and a low-load model prediction controller respectively; and S4, acquiring the actual load current of the electric pile, judging the adopted model prediction controller based on a switching strategy judged by a load current threshold, outputting a control variable by the adopted model prediction controller, controlling the fuel cell hydrogen supply system based on the control variable, and repeating the step S4 until the control is finished. Compared with the prior art, the hydrogen supply system has the advantages that the combined precise adjustment of the anode pressure and the hydrogen passing ratio is realized, so that the dynamic response performance of the hydrogen supply system and the overall operation stability of the system are improved, and the like.

To provide a methanation system which has good efficiency of conversion of carbon dioxide to methane even when gas containing a low concentration of carbon dioxide is used as a carbon dioxide source, and which enables simplification of equipment and reduction of installation area thereof.SOLUTION: Methanation equipment is provided, comprising: a dissolution tank exposing carbon dioxide-containing gas to an aqueous phase, thereby producing carbon dioxide-containing solution; a culture tank for culturing methane in culture solution, thereby producing methane; a carbon dioxide gas supply flow passage for introducing carbon dioxide-containing gas into the dissolution tank; solution transfer means transferring the carbon dioxide-containing solution produced in the dissolution tank from the dissolution tank to the culture tank; a hydrogen supply flow passage for supplying hydrogen to the dissolution tank or the culture tank; and a methane discharge flow passage for discharging the produced methane from the culture tank.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of organic functional materials and organic electronics, and particularly relates to a modified stretchable electrode and a preparation method and application thereof. Silver nanowire dispersion liquid is spin-coated on a substrate, an obtained silver nanowire film is patterned, the obtained patterned silver nanowire film is soaked in a modifier (a small molecule compound containing a group capable of being combined with silver and a hydrogen supply group) for modification, the upper portion of the obtained modified silver nanowire film is coated with an organic polymer solution, and after annealing, the silver nanowire film is obtained. And stripping from the substrate to obtain the modified stretchable electrode. Through the interaction between the modified and enhanced silver nanowire film and the organic polymer, the tensile property is improved, the situation that the sheet resistance of the modified stretchable electrode is increased due to breakage of the silver nanowires is avoided, and the modified stretchable electrode has high conductivity, high transparency and high fatigue resistance at the same time.

The invention provides a compressed air and waste heat coupled energy storage hydrogen fuel cell cold start system, which is characterized in that a compressed air storage tank, an air heating pipeline and a humidifier are connected to form a heated air supply branch, and the heated air supply branch is communicated with an air inlet of an electric pile; the hydrogen storage bottle and the hydrogen heating pipeline are connected to form a heating hydrogen supply branch which is communicated with the hydrogen inlet of the electric pile; a cooling liquid outlet of the galvanic pile is communicated with the cooling liquid heat exchange pipeline, an outlet of the cooling liquid heat exchange pipeline is communicated with a cooling liquid inlet of the galvanic pile through a cooling liquid preheating branch, a cooling liquid circulating pump is arranged on the cooling liquid preheating branch, and the cooling liquid heat exchange pipeline exchanges heat with a heat storage medium; the heat storage device is used for storing waste heat of the pile cooling liquid in a heat storage medium or preheating the cooling liquid under the cold start working condition. Cathode air heating supply, anode hydrogen heating supply and galvanic pile preheating through cooling liquid under the cold start condition are achieved, and the advantages of being low in cold start energy consumption and fast in start response are achieved.

The invention relates to a hydrogen fuel cell system, and discloses a modularized hydrogen production-hydrogen storage-hydrogen utilization integrated system based on intelligent regulation and control and a control method, and the integrated device comprises an integrated hydrogen production unit, a hydrogen storage unit, a hydrogen utilization unit, a thermal management unit and an intelligent main control system. And the integrated hydrogen production unit, the hydrogen storage unit and the hydrogen using unit are controlled by an intelligent master control system. And a control module in the heat management unit realizes heat management of the device. The intelligent master control system realizes energy management of the device. The hydrogen storage unit adopts a detachable hydrogen storage module, hydrogen production and hydrogen filling are supported at the same time, a hydrogen storage bottle group can be flexibly replaced, the scene requirements of a B end and a C end are met, and the mobility and deployment flexibility of equipment are improved. Compared with a traditional split type device, the energy consumption is reduced through intelligent regulation and control, the hydrogen storage density is improved, mobile deployment is supported, and the device is suitable for hydrogen refueling stations, micro-grids and remote area hydrogen supply scenes.

A hydrogen pressure reducer for a hydrogen supply system of a hydrogen fuel automobile relates to the technical field of hydrogen pressure reducers and comprises a valve body, a diaphragm type pressure reducing mechanism, a pilot-operated electromagnetic valve, a gas inlet and a gas outlet. The interior of the valve body is divided into a high-pressure cavity and a low-pressure cavity through the valve The diaphragm type pressure reducing mechanism is composed of a valve element assembly, a diaphragm assembly and a pressure adjusting assembly which cooperate to enable the output pressure of the air outlet to be kept stable, and assembly errors are eliminated. The valve element assembly is provided with a necking part to adjust the opening degree of a throttling hole, and accurate control is achieved. The base provides guiding constraint, and reliable sealing is ensured. The diaphragm assembly adopts a supporting disc, a diaphragm, a pressing disc and a locking nut fixing structure, so that the diaphragm is prevented from deforming, and the service life is prolonged. The pressure adjusting assembly comprises an upper cover, a pressure adjusting spring, a pressure adjusting spring seat and a pressure adjusting stud, and the pressure adjusting accuracy and stability are guaranteed. The overall reliability, sensitivity and safety of the hydrogen pressure reducer are improved.