2342results about "Reactant parameters control" patented technology

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.

The invention relates to the technical field of hydrogen preparation, and provides a hydrogen storage device based on a solid hydrogen storage material and a hydrogen production method thereof.The device comprises a fuel tank internally provided with a reaction cavity used for containing an aluminum hydride material and mixed powder; the heater is arranged on the outer side of the fuel tank; the first end of the water recycling assembly is communicated with the reaction cavity, and the second end of the water recycling assembly is communicated with the fuel cell system so as to recycle water generated by the fuel cell system to the reaction cavity; the first end of the hydrogen discharging assembly is communicated with the reaction cavity, and the second end is communicated with a fuel cell system. According to the hydrogen storage device provided by the invention, through the application of the high-specific-energy solid hydrogen storage material aluminum hydride which can be stored at normal pressure and release hydrogen at a relatively low temperature, the thermal decomposition process of the metal hydride in the fuel tank and the coupling reaction process of the metal hydride and water are optimized, and the hydrogen is produced by utilizing the hydrolysis reaction of the aluminum hydride thermal decomposition reactant simple substance aluminum and the water; meanwhile, thermal decomposition of aluminum hydride is promoted through heat released by hydrolysis reaction, hydrogen release is coupled, and effective utilization of heat is achieved.

The invention discloses a porous ejector, a use method thereof and a fuel cell system, and belongs to the technical field of fuel cells. Comprising a shell, a cavity is formed in the shell, and the cavity comprises a suction cavity, a mixing chamber, a second flow stabilizing chamber and a diffusion section which are sequentially arranged; a nozzle body is mounted in the suction cavity and is used for accelerating and depressurizing the driving fluid and spraying the accelerated and depressurized driving fluid into the suction cavity to form a negative pressure area; an ejection opening is formed in the side wall, corresponding to the suction cavity, of the shell and used for introducing an ejection fluid, and the ejection fluid and the driving fluid subjected to acceleration and pressure reduction are mixed in the mixing chamber; a nozzle assembly is arranged at the end, close to the mixing chamber, of the nozzle body and comprises at least one nozzle, and driving fluid is accelerated through a hole channel of the nozzle. The invention provides a porous ejector, a use method thereof and a fuel cell system, and solves the technical problems of low fuel injection efficiency and insufficient energy utilization of a single-hole ejector used in a traditional hydrogen supply system.

The invention discloses a flow battery system and a temperature control method thereof. A positive electrode heater and a positive electrode cooler which are used as a positive electrode temperature control assembly are arranged in a positive electrode electrolyte conveying and temperature management unit, and a negative electrode heater and a negative electrode cooler which are used as a negative electrode temperature control assembly are arranged in a negative electrode electrolyte conveying and temperature management unit. Closed-loop or open-loop management is carried out on the positive electrode temperature control assembly and the positive electrode in-pile or out-pile temperature or the temperature adjusting rate of the positive electrode in-pile or out-pile temperature, and closed-loop or open-loop management is carried out on the negative electrode temperature control assembly and the negative electrode in-pile or out-pile temperature or the temperature adjusting rate of the negative electrode in-pile or out-pile temperature, so that the temperature and the temperature change rate can be effectively controlled. Through the implementation of the invention, the system temperature management can be finer, the adaptability of the system under different conditions is improved, the battery performance and the system efficiency can be improved, the operation mode can be adjusted according to requirements in the operation process, and the application is more flexible; the system operation reliability can be enhanced, the system life is prolonged, and the system efficiency is improved.

The invention discloses a multi-hydrogen-storage-tank solid hydrogen storage system based on temperature control, and relates to the technical field of hydrogen energy storage, and the key points of the technical scheme are that the system comprises a plurality of hydrogen storage tanks, each hydrogen storage tank adopts different types of alloy hydrogen storage materials, each hydrogen storage tank is provided with an independent temperature control system, and the temperature is adjusted according to the types of the hydrogen storage materials; therefore, the hydrogen storage efficiency is optimized. The system can accelerate the hydrogen storage rate and improve the storage density through temperature control, the heat exchange device is arranged to improve the heat energy management efficiency, and accurate temperature control and cycle counting functions are achieved. The service life of the hydrogen storage material can be effectively prolonged, performance degradation is reduced, and the long-term stability of a hydrogen storage system is improved.

The invention provides a hydrogen storage system control method and device, electronic equipment and a vehicle. The hydrogen storage system control method comprises the steps that gas leakage detection is conducted on a hydrogen pipeline of a vehicle-mounted hydrogen storage system; according to the method, the passage between the target pipeline with the gas leakage fault and the hydrogen source is controlled to be cut off instead of closing the whole hydrogen storage system, so that the hydrogen storage system can continue to work through other pipelines, the reliability of the vehicle-mounted hydrogen storage system is improved, the stability of the hydrogen fuel cell vehicle is guaranteed, and the driving experience is improved.

The present disclosure provides systems and methods for generating and storing hydrogen and electricity. The systems generally include an electrolyzer stack, a fuel cell stack operably connected to the electrolyzer stack, and a hydrogen recirculation stack operably connected to the electrolyzer stack and to the fuel cell stack.

An integrated energy system comprising a power plant including at least one nuclear reactor and electrical power generation system, the at least one nuclear reactor being configured to generate steam, and the electrical power generation system being configured to generate electricity, a desalination system configured to receive at least a portion of the electricity and steam to produce brine, an electrolysis process configured to process the brine into Sodium Hydroxide (NaOH), a Sodium Formate (HCOONa) production process configured to receive the Sodium Hydroxide (NaOH) to produce Sodium Formate (HCOONa), a Hydrogen (H2) extraction reactor configured to receive the Sodium Formate (HCOONa) and produce Hydrogen (H2), and a fuel cell configured to receive the Hydrogen (H2).

The invention relates to the technical field of new energy, and discloses an independent energy supply system suitable for a high-altitude area and a control method thereof, electric power is generated through photovoltaic power generation, part of the electric power is stored in a storage battery, and the residual electric power is used for electrolyzing water to prepare hydrogen and oxygen, and the hydrogen and the oxygen are respectively stored. The oxygen content in the air is increased by mixing the oxygen, the oxygen and the hydrogen jointly enter the fuel cell for chemical reaction, and stable electric power and hot water are output. In order to ensure the stability of the system, a low-temperature air source heat pump is configured to serve as standby heat supply equipment, and accurate adjustment and storage of electric power are achieved through cooperative work of a load tracking module and an efficient storage battery. According to the system, photovoltaic power generation, hydrogen energy storage and fuel cell technologies are combined, continuous and reliable power and heat combined supply can be achieved in high-altitude areas lack of power grid support, and an efficient and environment-friendly solution is provided for energy supply in remote areas.

An air supply apparatus for an aerial mobility vehicle, which is provided with a fuel cell stack, includes an air compressor mounted in the aerial mobility vehicle and configured to compress air introduced into the aerial mobility vehicle, and an air chamber provided in the aerial mobility vehicle and connecting the air compressor and the fuel cell stack, wherein the air chamber defines a conditioning space for conditioning the air having passed through the air compressor, obtaining an advantageous effect of ensuring a stable supply of air to the fuel cell stack and improving operational stability and reliability.

The invention discloses a liquid hydrogen fuel cell unmanned aerial vehicle thermal management system, relates to the technical field of unmanned aerial vehicles, and solves the problem of temperature management in the flight process of an unmanned aerial vehicle. The system comprises a liquid hydrogen storage tank, a heat exchanger II, a hydrogen pump, an air compressor, a fuel cell, a power management module, a lithium battery, a motor, a phase change heat reservoir and a cooling system, wherein the liquid hydrogen storage tank, a cold end of the heat exchanger II, the hydrogen pump and an anode of the fuel cell are sequentially communicated; the air compressor is communicated with the cathode of the fuel cell; the phase change heat reservoir and the liquid cooling heat management system are used for cooling the fuel cell; the fuel cell, the power management module and the motor are sequentially connected; the lithium battery is connected with the power management module; and the phase change heat reservoir absorbs heat generated by the motor and the lithium battery during working. Liquid hydrogen vaporization is assisted through heat generated by the fuel battery lithium battery and the motor, efficient recycling of energy is achieved, energy waste is reduced, the energy utilization efficiency of the whole system is improved, and the endurance time of the unmanned aerial vehicle is prolonged.

A fuel cell system (10) includes: a fuel cell module (30) including a fuel cell stack (31) that generates power using fuel gas supplied to an anode and oxidant gas supplied to a cathode, a combustion unit (32) that burns combustible gas introduced from a combustion gas inlet, and a heat-insulating module case (35) that accommodates the fuel cell stack (31) and the combustion unit (32); a hydrogen supply system (40) including a hydrogen supply line connected to a hydrogen inlet of the fuel cell module (30) connecting with an inlet of the anode and a hydrogen supply source (1), and a hydrogen blower (43) provided in the hydrogen supply line; and a circulation system (60) including a hydrogen off-gas line connected to a hydrogen off-gas outlet of the fuel cell module (30) connecting with an outlet of the anode, a heat exchanger (71) provided in the hydrogen off-gas line, a combustion gas line connected to the combustion gas inlet of the fuel cell module (30), and a reflux line connected to the hydrogen supply line, the circulation system (60) distributing hydrogen off-gas discharged from the outlet of the anode and having passed through the heat exchanger (71) to the combustion gas line and the reflux line, wherein the hydrogen supply system (40) includes a governor (44) provided upstream of the hydrogen blower (43) in the hydrogen supply line, the reflux line branches off from the hydrogen off-gas line and is connected between the hydrogen blower (43) and the governor (44) in the hydrogen supply line, a plurality of the fuel cell modules (30) are provided, a plurality of the hydrogen supply systems (40) and a plurality of the circulation systems (60) are provided so as to correspond one-to-one to the fuel cell modules (30), lengths of the respective reflux lines of the plurality of circulation systems (60) are the same, and lengths downstream of the hydrogen blower (43) in the respective hydrogen supply lines of the plurality of hydrogen supply systems (40) are the same.

The invention relates to the technical field of hydrogen energy safety, and provides a hydrogen fuel cell automobile hydrogen leakage diffusion concentration monitoring test device and method.The device comprises a hydrogen storage system, a flow control system, a data acquisition and storage control system and a leakage opening simulation device, the hydrogen storage system comprises a hydrogen cylinder, and the flow control system comprises a plurality of airflow channels arranged in parallel; one end of each gas flow passage is connected with the hydrogen storage system, the other end of each gas flow passage is connected with a leakage port of one leakage port simulation device, each gas flow passage is provided with a plurality of gas flow branches in parallel, and different gas flow branches regulate and control the leakage gas flow by controlling the gas flow or the pressure and the size of the leakage port in a combined manner; according to the automobile hydrogen leakage diffusion test system, the hydrogen leakage diffusion platform of the hydrogen fuel cell automobile and the data acquisition and storage control system are built, so that the diffusion characteristics of the automobile after hydrogen leakage can be tested and analyzed, and the result can assist in making a hydrogen leakage emergency scheme and preventing the occurrence of hydrogen leakage fire explosion.

The invention relates to a hydrogen supply system and a new energy automobile. The system comprises a liquid hydrogen module and a gas hydrogen module, wherein the liquid hydrogen module and the gas hydrogen module are used for respectively providing hydrogen and high-pressure hydrogen subjected to first pressurization treatment for a pressurization module; the first side of the recovery module is connected with the liquid hydrogen module, and the recovery module is used for receiving recovered gas hydrogen discharged by the liquid hydrogen module and obtaining pressurized recovered gas hydrogen; the second side of the recovery module is connected with the gas hydrogen module and is used for transmitting the pressurized recovered gas hydrogen to the gas hydrogen module; the pressurizing module is used for performing second pressurizing treatment and third pressurizing treatment on the hydrogen subjected to the first pressurizing treatment and the high-pressure hydrogen to obtain pressurized target hydrogen; the buffer module is used for supplying the supercharged target hydrogen to the engine module. By adopting the hydrogen supply system, under the condition of low liquid hydrogen storage pressure, the liquid hydrogen supply pressure can be effectively maintained, stable operation of a fuel cell is guaranteed, meanwhile, evaporated hydrogen of the liquid hydrogen system is recycled, the energy utilization rate is increased, and then the power and cruising ability of a vehicle are guaranteed.

The subject matter described herein generally relates to look ahead energy management and control systems and methods for detecting, incorporating, and leveraging look ahead technology data to improve the performance, durability, and life of fuel cell systems.

A fuel cell system (10) includes: a plurality of power generation modules (30) each including a fuel cell stack (31) and a module case (35), the fuel cell stack (31) generating power with fuel gas supplied to an anode and oxidant gas supplied to a cathode, the module case (35) having a heat insulating property and housing the fuel cell stack (31); a plurality of fuel supply systems (40) including a plurality of fuel supply lines (41), respectively, each of the fuel supply lines (41) supplying the fuel gas to corresponding one of the plurality of power generation modules (30); a plurality of circulation systems (60) including a plurality of recirculation lines (63), respectively, each of the recirculation lines (63) causing fuel off-gas discharged from corresponding one of the plurality of power generation modules (30) to pass through corresponding one of heat exchangers (62) and then to be recirculated to corresponding one of the fuel supply lines (41); a plurality of condensed water tanks (66) each storing condensed water obtained by condensation in corresponding one of the heat exchangers (62) of water vapor contained in the fuel off-gas in corresponding one of the plurality of circulation systems (60); and a frame (21) that supports the plurality of power generation modules (30), the plurality of fuel supply systems (40), and the plurality of condensed water tanks (66), wherein the plurality of condensed water tanks (66) are installed in a space defined below installation positions of the plurality of power generation modules (30) in the frame (21).

The invention discloses a flow battery system and a temperature management method thereof, the flow battery system has indirect cyclic heating and cooling functions by arranging a two-stage heat exchange component and an auxiliary component, and the temperature of the flow battery system can be controlled by interlocking the indirect heating component or the cooling component and the auxiliary component with a pre-stack or post-stack temperature value. The preheating, heat dissipation and low-temperature protection of the positive or negative electrolyte in the standby process, the operation process and the long-time shutdown process of the flow battery system are realized; the heating component, the cooling component and the pre-stack temperature or the post-stack temperature can be subjected to double-closed-loop interlocking control, so that the heating rate or the cooling rate can be controlled. Through the implementation of the method, the uniformity of a temperature field in the electrolyte heat exchange process of the system is improved, the problems of decomposition or precipitation of active reaction substances and the like caused by overlarge local temperature difference of the electrolyte are avoided, and the adaptive capacity of the system when the load is greatly changed and the environment temperature is changed in a wide range can be enhanced; and the operation stability and reliability of the flow battery system are improved.

The invention discloses a flowing type vanadium-based electric fuel energy storage and supply system which comprises an electric pile reaction module, an electrolyte driving module and a medium storage module, and the electric pile reaction module comprises an oxygen evolution reaction flowing unit, a vanadium electrolyte flowing unit and an oxygen reduction reaction flowing unit which are arranged adjacently in pairs; a first flow field plate in the oxygen evolution reaction flow unit is provided with a bionic dendritic interdigital first flow channel; a second flow field plate in the vanadium electrolyte flowing unit is provided with a bidirectional spiral interdigital second flow channel; a third flow field plate in the oxygen reduction reaction flow unit is provided with a third multi-stage fractal interdigital flow channel; the medium storage module comprises a vanadium electrolyte storage tank and a reaction medium storage tank, the vanadium electrolyte storage tank and the reaction medium storage tank are arranged on the two opposite sides of the galvanic pile reaction module, the vanadium electrolyte storage tank is connected with the second flow field plate, and the reaction medium storage tank is connected with the second flow field plate and the third flow field plate. According to the system, the integration level of the system is improved on the basis of reducing the cost.

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 relates to the technical field of new energy storage and utilization, in particular to a multi-energy coupling and utilization system and method based on salt cavern hydrogen storage, and the system comprises a hydrogen storage salt cavern, a natural gas storage salt cavern and a carbon dioxide storage salt cavern; the water electrolysis hydrogen production unit utilizes electric power to drive an electrolytic bath to produce hydrogen, and the hydrogen is compressed and stored in a hydrogen storage salt cavity; the fuel cell power generation unit takes out hydrogen from the hydrogen storage salt cavern, generates power by using the hydrogen and transmits the power to a power grid; the natural gas blending combustion unit is used for mixing hydrogen in the hydrogen storage salt cavern and natural gas in the natural gas storage salt cavern according to a target proportion to form mixed gas, and sending the mixed gas into a natural gas pipeline network for blending; and the methanol synthesis unit is used for mixing hydrogen in the hydrogen storage salt cavern and carbon dioxide in the carbon dioxide storage salt cavern, preparing synthesis gas through a reverse water-gas shift reaction, and synthesizing methanol by using the synthesis gas. Therefore, the problems that the energy conversion efficiency is low, hydrogen, natural gas and carbon dioxide face challenges in space and the like are solved.

A retrofit mining haul truck includes a hybrid hydrogen fuel cell / battery-based powerplant in place of a carbon fuel-based powerplant. The retrofit mining haul truck includes a frame, a tray coupled to the frame, and a deck coupled to the frame forward of at least a portion of the tray. A battery system is mounted to the deck of the retrofit mining haul truck. A hydrogen storage system (HSS) is installed in an engine bay volume of the retrofit mining haul truck. The engine bay was configured to contain a combustion engine (e.g., a diesel engine) prior to retrofitting the retrofit mining haul truck. At least a portion of a fuel cell system is installed in a wheel pocket of the retrofit mining haul truck. The wheel pocket was configured to contain a diesel tank prior to retrofitting the retrofit mining haul truck.

The invention discloses a compact type full-power coverage ejector structure, and relates to the technical field of ejector structures, the compact type full-power coverage ejector structure comprises a flow mixing cavity and a conveying cavity which are arranged in a communicating mode, and a nozzle used for conveying high-speed fluid is arranged at the end, away from the conveying cavity, of the flow mixing cavity; a secondary hydrogen flow inlet for conveying low-speed fluid is formed in the side wall of the mixed flow cavity; the nozzle comprises a conical section and a cylindrical section, wherein the conical section is close to the conveying cavity. According to the compact full-power coverage ejector structure, the nozzle, the partition plate, the needle valve and other structures are arranged, the opening degree of the nozzle is adjusted in real time through the pressure of high-speed fluid, accurate flow control within the full-power range is achieved, different load requirements of a fuel cell are met, and the flow rate is adjusted through the wide-range adjusting capacity of the nozzle. Full-power coverage from low load to full load is achieved, the problem that the efficiency of a traditional ejector is reduced when the load is low is solved, and the use efficiency of the compact full-power coverage ejector structure is improved.

The invention discloses a titanium-based hydrogen storage alloy material and a preparation method and application thereof. The element composition of the titanium-based hydrogen storage alloy material is Ti < 0.890 > Zr < 0.110 > Cr < 0.900 > Mn < 0.800 > Fe < 0.175 > (VFe) < 0.125 > + x wt.% Ce, and x ranges from 0 to 5. The titanium-based hydrogen storage alloy material has the characteristics of being easy to activate and excellent in hydrogen absorption and desorption performance (suitable in hydrogen absorption and desorption platform pressure, small in platform lag, large in reversible hydrogen storage capacity and fast in hydrogen absorption and desorption dynamics), and can meet the application conditions of kilowatt-level fuel cells of heavy machinery; the practical application of the Ti-based AB2 type hydrogen storage alloy in the aspect of kilowatt-level fuel cells is favorably widened.

The present disclosure provides systems and methods for storing, transporting, and using hydrogen. In some embodiments, the method may comprise (a) storing hydrogen fuel in one or more fuel storage modules; (b) transporting the one or more fuel storage modules to a vehicle fueling site, wherein one or more hydrogen fuel compatible vehicles are located at or near the vehicle fueling site; (c) loading the one or more fuel storage modules into the one or more hydrogen fuel compatible vehicles, wherein the one or more fuel storage modules are configured to be releasably coupled to the one or more hydrogen fuel compatible vehicles; and (d) decoupling the one or more fuel storage modules from the one or more hydrogen fuel compatible vehicles after the one or more fuel storage modules are depleted or partially depleted.

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 present invention belongs to the technical field of fuel cells. Provided are a method and apparatus for controlling a circulation volume for an anode, and an electronic device and a fuel cell. The method for controlling a circulation volume for an anode in the present invention can accurately determine the hydrogen circulation volume of an anode, and then realize the regulation of the hydrogen circulation volume of a fuel cell system in combination with an actual hydrogen circulation volume. In the method for controlling a circulation volume for an anode in the present invention, on the basis of the rotation speed of a hydrogen circulating pump, the displacement of the hydrogen circulating pump per revolution, the gas pressure difference between an inlet and an outlet of the hydrogen circulating pump, and the density and viscosity of a circulating gas, an actual gas circulation volume of an anode of a fuel cell stack is determined; then, an accurate actual hydrogen circulation volume of the anode is obtained; and then in combination with a required hydrogen circulation volume of the anode and the current rotation speed of the hydrogen circulating pump, an appropriate adjustment strategy is applied to operating parameters of a target device, so as to realize the regulation of the hydrogen circulation volume of the anode, thus ensuring the safe and stable operation of the fuel cell stack.

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 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 discloses a biomass supercritical water gasification hydrogen production and fuel cell hydrogen-electricity coupling system which comprises a supercritical water gasification reactor, a material conveying system, a preheating and heat regeneration system, a gas-liquid separation system, a combustion gas combustion system, a hydrogen purification system and a hydrogen fuel cell system. The material conveying system comprises a storage tank, a high-pressure slurry conveying device, a first high-pressure plunger pump and a water tank; the preheating and heat regeneration system comprises a heat regenerator, a preheater and a second high-pressure plunger pump; the gas-liquid separation system comprises a back pressure valve and a gas-liquid separator; the fuel gas combustion system comprises a combustion gas combustion device and a combustion gas storage tank; the hydrogen purification system comprises a hydrogen purification device, a combustion gas storage tank and a hydrogen storage tank. The supercritical water gasification reaction system and the hydrogen fuel cell power generation system are coupled, hydrogen is directly generated and efficiently converted into electric energy, the advantages of being environmentally friendly and clean are achieved, and efficient utilization of biomass resources is achieved.