824 results about "Hydrogen supply" patented technology

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 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 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.

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 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 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 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.

The invention belongs to the technical field of electricity-hydrogen coupling system control, and provides a voltage-air pressure stability control method and system for an electricity-hydrogen coupling system. The voltage-air pressure stability control method for the electricity-hydrogen coupling system comprises the steps that a battery energy storage system serves as an execution unit, and a voltage regulation model is constructed based on the dynamic relation between voltage and current; a solid hydrogen storage system is used as an object, and an air pressure adjusting model is constructed based on the relation between flow and pressure; constructing a hydrogen production / hydrogen consumption model based on hydrogen production / hydrogen consumption behaviors of the electrolytic cell and the fuel cell; on the basis of real-time sharing of state variables of an electricity-hydrogen coupling system, charging and discharging of a battery energy storage system in a millisecond period are adjusted according to a voltage adjusting model, so that rapid and stable control over the voltage of a direct-current bus is achieved. And regulating and controlling the hydrogen charging and discharging flow of the solid hydrogen storage system in a second-level time scale according to the air pressure regulation model to ensure the stable pressure of the buffer tank and continuous hydrogen supply, regulating the electrolysis and fuel cell power according to the hydrogen production / consumption model to ensure the balance of energy supply and demand, and finally realizing the voltage-air pressure stability coordinated regulation and control between the electric domain and the hydrogen domain.

The invention discloses a long-time emergency hydrogen-lithium hybrid power generation platform, which comprises a fuel cell stack for generating electric energy through electrochemical reaction of hydrogen and air; the air supply subsystem provides stable airflow through an air compressor and an electric control valve, and the hydrogen supply subsystem realizes hydrogen circulation through a hydrogen storage tank and a reflux pump; the thermal management system is used for controlling the temperature of the fuel cell stack through a water pump and a radiator based on liquid water circulation and dynamically adjusting water flow through a thermostat and a main radiator; the power electronic system activates the fuel cell stack and the lithium battery to work cooperatively through the FCU, monitors the state of the fuel cell stack in real time, and adjusts the cooling efficiency; the control and data monitoring system collects temperature, pressure and voltage parameters in real time through multiple sensors. According to the invention, through collaborative optimization of hydrogen energy and lithium batteries and key equipment innovation, an efficient, reliable and zero-carbon distributed energy system is constructed, and technical support is provided for research of long-time emergency supply insurance power generation vehicles.

The invention discloses an ammonia hydrogen fuel engine combustion system and method, and belongs to the technical field of clean energy, the system comprises a shell, the shell is provided with a combustion chamber, a pre-combustion chamber, an air inlet channel and an exhaust channel, and the pre-combustion chamber, the air inlet channel and the exhaust channel communicate with the combustion chamber; the injection valve set comprises an air inlet channel hydrogen injection valve, a pre-combustion chamber hydrogen injection valve, a direct injection hydrogen injection valve and an air inlet channel ammonia injection valve. The supply assembly comprises a hydrogen supply unit and an ammonia gas supply unit, the ammonia gas supply unit supplies ammonia gas to the combustion chamber through a gas inlet channel ammonia gas injection valve, and the hydrogen supply unit supplies hydrogen gas to the combustion chamber through a gas inlet channel hydrogen injection valve, a pre-combustion chamber hydrogen injection valve and a direct injection hydrogen injection valve; switching of the pure hydrogen premixed combustion mode, the pure hydrogen stratified combustion mode and the ammonia-hydrogen mixed combustion mode is achieved by adjusting the injection valve set and the supply assembly, the problems of abnormal combustion, power reduction and NOX and N2O emission existing on the engine are solved, and the operation stability of the engine is improved.

This invention provides a fuel cell system that can estimate the nitrogen concentration of gases emitted from the fuel cell at low cost. [Solution] The fuel cell system 1 comprises a fuel cell 2 that generates electricity through an electrochemical reaction between hydrogen gas and oxygen gas and discharges hydrogen off gas containing unreacted hydrogen gas together with nitrogen gas and moisture; a hydrogen supply channel 40 that supplies hydrogen gas from a hydrogen tank 41 to the fuel cell 2; a recirculation channel 50 that recirculates the hydrogen off gas back into the hydrogen supply channel 40; a gas-liquid separator 51 that separates moisture from the hydrogen off gas to obtain dehumidified hydrogen gas and stores the separated moisture; an exhaust valve 54 that exhausts the dehumidified hydrogen gas from the recirculation channel 50; a pressure sensor 52 that detects the pressure in the recirculation channel 50; and a control device 6 that controls the exhaust valve 54. The control device 6 estimates the concentration of nitrogen gas contained in the dehumidified hydrogen gas based on the value detected by the pressure sensor 52, and controls the exhaust valve 54 to an open state when the concentration of nitrogen gas exceeds a predetermined value.

The invention discloses a proton exchange membrane fuel cell system based on a double-screw compression and expansion integrated machine. The proton exchange membrane fuel cell system comprises a fuel cell stack, a hydrogen supply system, an air supply system and a hydrothermal management system, in the air supply system, ambient air is introduced into an air inlet of a water spraying compressor, an outlet of the water spraying compressor is connected with a first gas-water separator, an air outlet of the first gas-water separator is connected with a cathode air inlet of a fuel cell stack, and a cathode air outlet of the fuel cell stack is connected with an air inlet of a water spraying expansion machine; an outlet of the water spraying expansion machine is connected with a second gas-water separator; in the hydrothermal management system, a water outlet of a cooling water pump is connected with an inlet of a three-way regulating valve through a radiator, and the flow is divided into two paths after being regulated by the three-way regulating valve; one path is connected to a cooling water inlet of the fuel cell stack through a first outlet of the three-way regulating valve, and the other path is connected to a water injection nozzle of the water injection compressor through a second outlet of the three-way regulating valve. The overall performance of the system can be improved, and the system structure is simplified.

The invention discloses a proton exchange membrane fuel cell hydrogen supply system and a control method, and belongs to the field of fuel cells. The method comprises the following steps: constructing an electrochemical-fluid coupling model of a proton exchange membrane fuel cell stack; constructing a galvanic pile life prediction model based on a long short-term memory (LSTM) neural network; judging a system operation mode according to the current load power; when the system enters a standby state or an emergency shutdown state, a hydrogen and air supply loop is cut off, and nitrogen is introduced into the anode and the cathode of the galvanic pile for protection; load power is used as reference input, pile output power is used as feedback, and a PID controller is used for adjusting the opening degree of an electric control proportional valve of a hydrogen supply loop and an air supply loop; and taking a total impedance predicted value output by the galvanic pile life prediction model as an optimization target. According to the method, the problems of performance degradation and service life shortening of the fuel cell under the dynamic working condition are solved, and efficient, reliable and long-life operation of the fuel cell system is realized through the comprehensive means of model prediction, real-time control and intelligent optimization.

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 fuel cells, in particular to an air-cooled hydrogen fuel cell energy recycling device and a control method thereof.The air-cooled hydrogen fuel cell energy recycling device comprises a hydrogen fuel cell stack, a hydrogen storage bottle and a fan, the fan is communicated with an air flow channel of the hydrogen fuel cell stack, and the hydrogen storage bottle is communicated with a hydrogen flow channel of the hydrogen fuel cell stack through a hydrogen supply pipeline; a heat recovery channel surrounding the hydrogen storage bottle is arranged on the outer side of the hydrogen storage bottle, one end of the heat recovery channel is communicated with the fan through an air inlet channel, the other end of the heat recovery channel is connected with a humidifier through an air outlet channel, the humidifier is arranged on the side, away from the fan, of the hydrogen fuel cell stack, and waste heat generated during operation of the hydrogen fuel cell stack is recovered. Heat is provided for the hydrogen storage bottle through the heat recovery channel, the energy utilization rate is improved, the hydrogen desorption speed of the hydrogen storage bottle is maintained, the stack efficiency is improved, condensate water in the hydrogen desorption and heat absorption process of the hydrogen storage bottle is used for humidifying an air inlet of a hydrogen fuel cell stack, water balance of the air-cooled hydrogen fuel cell is effectively guaranteed, and the phenomenon of membrane drying is prevented.

The invention discloses a hydrogen production storage tank pressure fluctuation prediction control method based on dynamic monitoring, and the method comprises the steps: collecting storage tank pressure, hydrogen supply flow, valve opening and environment temperature parameters through a multi-point sensing device, and transmitting the parameters to an edge cooperation pressure analysis platform for screening effective data; calling the high-dimensional pressure prediction model to input effective data, predicting a future pressure fluctuation trend and generating a curve; starting a feedback compensation pressure control algorithm based on the prediction curve, and calculating an adjustment compensation amount by combining actual and predicted pressure deviations; the compensation amount is input into a hybrid intelligent pressure adjusting algorithm, and a hydrogen supply flow and valve opening control instruction is generated in combination with the hydrogen supply capacity and a safety pressure threshold value; an instruction is transmitted to an executing mechanism to adjust pressure, and meanwhile adjusted data are fed back to the platform to form a closed loop. The pressure of the storage tank is dynamically and accurately controlled, and the safety and hydrogen supply continuity of a hydrogen production system are guaranteed.

A method and system for optimizing the capacity of an efficient electrohydrogen-catalyst-based multi-energy flow-coupled system is provided. [Solution] A capacity optimization method for a multi-energy flow coupled system based on an efficient electrohydrogen catalyst, comprising the steps of: treating a transition metal catalyst through defect engineering and interface engineering, and then constructing a high-definition model; constructing a multi-energy flow coupled model using energy storage equipment based on the constructed high-definition model, and creating a multi-energy flow coupled collaborative optimization structure with the constraints of reserve, carbon emissions, renewable energy allocation standards, and the real-time balance of electricity, heat, and hydrogen supply and demand power, and minimizing total annual costs as the goal; and obtaining operating data and cost data, inputting them into the multi-energy flow coupled collaborative optimization structure, solving it, and outputting an optimal capacity configuration strategy.

The invention provides a hybrid power system for a dual-mode patrolling bomb and a use mode of the hybrid power system, and belongs to the technical field of aviation power. The problem that an existing patrolling bomb power system is difficult to meet the requirements for long-time cruising and instantaneous explosion acceleration at the same time is solved. The system comprises a hydrogen supply mechanism, a hydrogen peroxide supply mechanism, a fuel cell, a motor and a combustion chamber, the hydrogen supply mechanism is connected with an anode of the fuel cell, the fuel cell is connected with the motor, the motor is connected with a propeller, and the hydrogen peroxide supply mechanism is provided with two supply lines. The first supply line is connected with a cathode of the fuel cell through the hydrogen peroxide decomposition unit, the second supply line is connected with the combustion chamber, a first flow regulating valve is arranged on the first supply line, a second flow regulating valve is arranged on the second supply line, a grain is arranged in the combustion chamber, and the grain is spontaneous combustion fuel with a metal framework. The combustion chamber is connected with the exhaust nozzle. The hybrid power device is mainly used for providing hybrid power for the dual-mode patrol ammunition.

The invention discloses a small turbofan engine hydrogen low-pollution combustion chamber and a combustion method, the combustion chamber is used for dividing air at an inlet of the combustion chamber into three paths to enter a main combustion area for combustion, and the combustion chamber comprises a main combustion chamber inner casing, an inner flame tube, an outer flame tube and a main combustion chamber outer casing which are sequentially sleeved from inside to outside; a main combustion chamber head is arranged at one end, connected with the inner flame tube, of the outer flame tube; the wall surfaces of the outer flame tube and the inner flame tube at the other end are respectively provided with a large discharge mixing hole and a small discharge mixing hole for air to enter; the head of the main combustion chamber is provided with a hydrogen collecting cavity and a Tesla valve mixer which are connected, one end of the hydrogen collecting cavity is connected with a hydrogen supply pipeline, and the other end of the hydrogen collecting cavity is communicated with a plurality of Tesla valve channels in the Tesla valve mixer. The Tesla valve mixer is utilized, mixing strengthening is achieved on the basis of transverse jet flow and cross jet flow combination, efficient mixing of hydrogen and air is achieved under the constraint of the limited size of the head of the main combustion chamber, hydrogen lean-burn micro-premixed combustion is completed, and emission of nitrogen oxide is reduced.

The invention discloses a high temperature fuel cell HT-PEMFC temperature control method and system based on fuzzy ADRC. The method comprises the following steps: constructing an HT-PEMFC system comprising an electric pile, a hydrogen supply pipeline, an air supply pipeline, a hot oil loop, a data acquisition device, a direct current electronic load and a host; according to the operation data of each device in the HT-PEMFC system, a temperature dynamic model of the HT-PEMFC system is established based on a multi-physics field Modelica language platform Dymola; a fuzzy bandwidth adjustment strategy (Fuzzy-ADRC) is designed; the fuzzy bandwidth adjustment strategy Fuzzy-ADRC is used for stable control of the stack temperature under load current disturbance and circulating pump flow disturbance. According to the method, the problem of over-compensation energy consumption of a traditional ADRC under strong disturbance and the problem of high regulation energy consumption of PID are solved, and the method is one of optimal controllers for thermal management of the HT-PEMFC system.

A heat generating device includes: a sealed container; a tubular body provided in a hollow portion of the sealed container; a heat generating element provided on an outer surface of the tubular body and configured to generate heat by occluding and discharging hydrogen supplied to the hollow portion; and a flow path formed by an inner surface of the tubular body and through which configured to allow a fluid that exchanges heat with the heat generating element to flow. The heat generating element includes a base made of a hydrogen storage metal, and a multilayer film provided on the base. The multilayer film has a first layer made of a hydrogen storage metal and having a thickness of less than 1000 nm, and a second layer made of a hydrogen storage metal, which is different from that of the first layer, and having a thickness of less than 1000 nm.

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 discloses a PID control apparatus and method of a fuel cell system. The PID control device comprises a hydrogen pressure sensing unit which collects an actual hydrogen pressure value at an outlet of a hydrogen proportional valve arranged between the hydrogen supply device and the fuel cell stack and generates a collected value representing the actual hydrogen pressure value; the PID controller is used for carrying out a preset PID control algorithm on a hydrogen pressure deviation value between the acquisition value and target hydrogen pressure of the fuel cell system, the variable quantity of the hydrogen pressure deviation value and the cumulant of the hydrogen pressure deviation value so as to obtain a coefficient of the PID controller; and calculating a control amount for the opening degree of the hydrogen proportional valve according to the coefficient.

The invention discloses a cooperative control method for the air-fuel ratio, the injection opportunity and the cooling liquid temperature of a hydrogen fuel engine. The cooperative control method comprises the steps that S1, operation condition parameters and combustion state parameters of the hydrogen fuel engine are monitored; s2, based on the operation condition parameters, adaptively determining a target air-fuel ratio, a fuel injection opportunity and a cooling liquid temperature through a preset control strategy; s3, the combustion state and the engine operation condition are evaluated in real time through a closed-loop feedback control system, and the following cooperative adjustment is executed: the hydrogen supply amount is adjusted to maintain the target air-fuel ratio; the hydrogen injection time is adjusted, and the combustion phase is optimized. According to the cooperative control method for the air-fuel ratio, the injection opportunity and the cooling liquid temperature in the hydrogen fuel engine, the target air-fuel ratio, the hydrogen fuel injection opportunity and the engine cooling liquid temperature are comprehensively adjusted under a closed-loop feedback control framework, optimal control over the combustion process under different working conditions is achieved, and therefore the braking heat efficiency of the engine is improved, and the service life of the engine is prolonged. And pollutant emission is reduced, knocking is restrained, and the application requirement for efficient cleaning of the engine is met.

This application relates to the field of steel production technology, and in particular to a method and apparatus for evaluating the flexibility of a hydrogen-based shaft furnace. The method includes: establishing a time-domain dynamic simulation model of the hydrogen-based shaft furnace to obtain production time-domain data; constructing an initial flexibility model of the hydrogen-based shaft furnace considering the direct reduction iron metallization rate based on the first-order dynamic reaction process of the furnace; adjusting the initial flexibility model using the production time-domain data to obtain a final discretized flexibility model; and integrating the discretized flexibility model into the objective function of the hydrogen-based shaft furnace under real-time electricity prices to obtain the flexibility evaluation result. This solves the problem that related technologies often use steady-state models, which are difficult to characterize the dynamic evolution of the furnace's temperature field, gas concentration field, and reaction process under operating condition disturbances such as load changes, hydrogen supply fluctuations, and changes in raw material properties, easily leading to deviations between model predictions and actual operating conditions.