Hydrogen production and compression hydrogen storage system suitable for hydrogen energy unmanned aerial vehicle

Abstract

The invention relates to a hydrogen production and compression hydrogen storage system suitable for a hydrogen energy unmanned aerial vehicle. The hydrogen production and compression hydrogen storage system comprises a water storage tank, a first gas-liquid separator, a water pump, an air cooling radiator, a deionizer, a PEM electrolytic bath, a second gas-liquid separator, a first drying pipe, a second drying pipe, a first air pump, a motor, a controller and a hydrogen storage bottle. The first gas-liquid separator is respectively connected with the water storage tank, the water pump and the PEM electrolytic bath; the air cooling radiator is respectively connected with the water pump, the deionizer and the PEM electrolytic bath; the second gas-liquid separator is respectively connected with the PEM electrolytic bath, the water storage tank and the second drying pipe; the first drying pipe is respectively connected with the water storage tank, the second drying pipe and the first air pump; the second drying pipe is respectively connected with the water storage tank and the first air pump; the first air pump is respectively connected with the hydrogen storage bottle, the motor and the controller; and the motor is connected with the controller. The hydrogen production, purification, compression and hydrogen storage functions can be achieved, the size is small, and hydrogen can be supplemented and hydrogenated for the unmanned aerial vehicle.

Description

Technical Field

[0001] This invention relates to the field of hydrogen storage technology, and in particular to a hydrogen production and compression storage system suitable for hydrogen-powered drones. Background Technology

[0002] Currently, hydrogen-powered drones lack portable hydrogen production and pressurization products for on-site inspections or cargo transport, making it impossible to obtain a hydrogen source in real time and hindering their long-term operation. Traditional hydrogen production systems and diaphragm compressors are heavy, bulky, have low integration, and are expensive, making them difficult to apply directly to field operations of hydrogen-powered drones. Furthermore, the number and uneven distribution of hydrogen refueling stations are currently limited; since hydrogen cylinder pressurization for drones generally requires refueling at these stations, the on-site hydrogen supply and refueling issues cannot be resolved, significantly restricting the wider promotion and application of hydrogen-powered drones. Summary of the Invention

[0003] Based on this, embodiments of the present invention provide a hydrogen production, compression and storage system suitable for hydrogen-powered drones, aiming to solve the problems of the limited number of existing hydrogen refueling stations and the inability to solve the gas source and refueling of hydrogen-powered drones on-site.

[0004] To achieve the above objectives, the present invention proposes the following technical solution: a hydrogen production, compression, and storage system suitable for hydrogen-powered drones, comprising a water tank, a first gas-liquid separator, a water pump, an air-cooled radiator, a deionizer, a PEM electrolyzer, a second gas-liquid separator, a first drying tube, a second drying tube, a first air pump, a motor, a controller, and a hydrogen storage cylinder; the first gas-liquid separator is connected to the water tank, the water pump, and the PEM electrolyzer; the air-cooled radiator is connected to the water pump, the deionizer, and the PEM electrolyzer; the second gas-liquid separator is connected to the PEM electrolyzer, the water tank, and the second drying tube; the first drying tube is connected to the water tank, the second drying tube, and the first air pump; the second drying tube is connected to the water tank and the first air pump; the first air pump is connected to the hydrogen storage cylinder, the motor, and the controller; and the motor is connected to the controller.

[0005] In a preferred embodiment, the hydrogen production, compression and storage system for hydrogen-powered drones further includes a hydrogen production power source, which is connected to the PEM electrolyzer.

[0006] In a preferred embodiment, a second air pump is provided between the first air pump and the hydrogen storage tank, and the second air pump is connected to the first air pump, the motor, the controller, and the hydrogen storage tank.

[0007] In a preferred embodiment, the hydrogen production, compression, and storage system for hydrogen-powered drones further includes an oxygen-hydrogen sensor and a hydrogen concentration sensor; the oxygen-hydrogen sensor is connected to the first gas-liquid separator via an oxygen venting valve; and the hydrogen concentration sensor is connected to the hydrogen storage cylinder.

[0008] In a preferred embodiment, a first tail drain valve is provided between the first drying pipe and the water storage tank, and the first tail drain valve is connected to the first drying pipe and the water storage tank respectively; a second tail drain valve is provided between the second drying pipe and the water storage tank, and the second tail drain valve is connected to the second drying pipe and the water storage tank respectively; the first tail drain valve is connected to the second tail drain valve.

[0009] In a preferred embodiment, the hydrogen production, compression and storage system for hydrogen-powered drones further includes a first switching valve and a second switching valve; the first switching valve is connected to the first drying tube and the second switching valve respectively; the second switching valve is connected to the second drying tube and the second gas-liquid separator respectively.

[0010] In a preferred embodiment, the hydrogen production, compression, and storage system for hydrogen-powered drones further includes a proportional valve, a third switching valve, and a fourth switching valve; the third switching valve is connected to the first drying pipe, the first gas pump, and the fourth switching valve respectively; the fourth switching valve is connected to the first gas pump and the second drying pipe respectively; one end of the proportional valve is connected between the first drying pipe and the third switching valve, and the other end is connected between the second drying pipe and the fourth switching valve.

[0011] In a preferred embodiment, the hydrogen production, compression and storage system for hydrogen-powered drones further includes a first pressure sensor and a fifth switching valve; the fifth switching valve is connected to the first pressure sensor and the first gas pump respectively; the end of the first pressure sensor away from the fifth switching valve is connected between the third switching valve and the fourth switching valve.

[0012] In a preferred embodiment, the hydrogen production, compression, and storage system for hydrogen-powered drones further includes a second pressure sensor, a sixth switching valve, and a mechanical pressure reducing valve connected in sequence; the second pressure sensor is connected to the second gas pump; and the mechanical pressure reducing valve is connected to the hydrogen storage cylinder.

[0013] In a preferred embodiment, a first check valve, a pressure relief valve, a shut-off valve, and a third pressure sensor are sequentially connected between the mechanical pressure reducing valve and the hydrogen storage cylinder. The first check valve is connected to the mechanical pressure reducing valve; the third pressure sensor is connected to the hydrogen storage cylinder; and the pressure relief valve is connected to the tailpipe.

[0014] In a preferred embodiment, the hydrogen production, compression, and storage system for hydrogen-powered drones further includes a flame arrester, a second one-way valve, and a hydrogen discharge valve connected in sequence; the flame arrester is connected to the tailpipe; the hydrogen discharge valve is connected to the water storage tank; and the end of the first tailpipe valve near the second tailpipe valve is connected between the flame arrester and the second one-way valve.

[0015] In a preferred embodiment, a first drain valve is provided between the water storage tank and the first gas-liquid separator, and the first drain valve is connected to the water storage tank and the first gas-liquid separator respectively; the first gas-liquid separator is connected to the first liquid level gauge.

[0016] In a preferred embodiment, the first gas-liquid separator is connected to a pure water source via a water supply valve, the water supply valve being connected to both the first gas-liquid separator and the pure water source; the oxygen exhaust valve is connected to the tailpipe.

[0017] In a preferred embodiment, a manual valve is provided between the air-cooled radiator and the deionizer, and the manual valve is connected to the air-cooled radiator and the deionizer respectively; the deionizer is connected to the drain manual valve; and the drain manual valve is connected to the tail drain.

[0018] In a preferred embodiment, a conductivity sensor and a water flow meter are connected between the air-cooled radiator and the PEM electrolytic cell; the water flow meter is positioned close to the PEM electrolytic cell.

[0019] A temperature sensor is provided between the PEM electrolyzer and the first gas-liquid separator, and the temperature sensor is connected to both the PEM electrolyzer and the first gas-liquid separator.

[0020] In a preferred embodiment, the second gas-liquid separator is connected to the second level gauge; a second drain valve is provided between the second gas-liquid separator and the water storage tank, and the second drain valve is connected to the second gas-liquid separator and the water storage tank respectively.

[0021] Compared with existing technologies, the beneficial effects achieved by this invention are as follows: The system of this application enables hydrogen production, hydrogen purification, hydrogen compression, and hydrogen storage, reducing the overall system size and weight. It allows for portable hydrogen refueling of hydrogen-powered drones, expanding the application scenarios of hydrogen-powered drones and facilitating their promotion. Compared to traditional diaphragm compressors, this application achieves two-stage compression through a first and second air pump, significantly reducing compression costs while minimizing system size and weight. Compared to traditional three-tower temperature swing adsorption, this application employs a dual-tower pressure swing adsorption system with a first and second drying tube, reducing system size and power consumption and improving overall portability. The system of this application is equipped with an oxygen-hydrogen sensor and a hydrogen concentration sensor, greatly improving the overall safety of the system. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of a hydrogen production, compression, and storage system for a hydrogen-powered drone according to an embodiment of the present invention.

[0024] Figure 2 To adopt Figure 1 A schematic diagram of the working process of a hydrogen production, compression and storage system for hydrogen-powered drones.

[0025] Figure 3 for Figure 1 A schematic diagram of the logic control of a hydrogen production, compression, and storage system for hydrogen-powered drones.

[0026] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, top, bottom, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] It should be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0031] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0032] Specifically, such as Figures 1 to 3As shown, the present invention proposes the following technical solution: a hydrogen production, compression, and storage system suitable for hydrogen-powered drones, comprising a water tank 10, a first gas-liquid separator 20, a water pump 30, an air-cooled radiator 40, a deionizer 50, a PEM electrolyzer 60, a second gas-liquid separator 70, a first drying tube 80, a second drying tube 90, a first air pump 100, a motor 110, a controller 120, and a hydrogen storage cylinder 130; the first gas-liquid separator 20 is connected to the water tank 10, the water pump 30, and the PEM electrolyzer 60 respectively; the air-cooled radiator 40 is connected to the water pump 30, the first gas-liquid separator 70, the second drying tube 90, the first air pump 100, a motor 110, a controller 120, and a hydrogen storage cylinder 130; the first gas-liquid separator 20 is connected to the water tank 10, the water pump 30, and the PEM electrolyzer 60 respectively; the air-cooled radiator 40 is connected to the water pump 30, the second gas-liquid separator 70, the third gas-liquid separator 80, the fourth gas-liquid separator 90, the fifth gas-liquid separator 100, the sixth gas-liquid separator 90, the seventh gas-liquid separator 100, the eleventh ... The deionizer 50 and the PEM electrolyzer 60 are connected; the second gas-liquid separator 70 is connected to the PEM electrolyzer 60, the water storage tank 10, and the second drying tube 90 respectively; the first drying tube 80 is connected to the water storage tank 10, the second drying tube 90, and the first air pump 100 respectively; the second drying tube 90 is connected to the water storage tank 10 and the first air pump 100 respectively; the first air pump 100 is connected to the hydrogen storage cylinder 130, the motor 110, and the controller 120 respectively; the motor 110 is connected to the controller 120.

[0033] In a preferred embodiment, the hydrogen production, compression and storage system for hydrogen-powered drones further includes a hydrogen production power source 140, which is connected to the PEM electrolyzer 60.

[0034] In a preferred embodiment, a second air pump 150 is provided between the first air pump 100 and the hydrogen storage tank 130, and the second air pump 150 is connected to the first air pump 100, the motor 110, the controller 120 and the hydrogen storage tank 130 respectively.

[0035] In a preferred embodiment, the hydrogen production, compression and storage system for hydrogen-powered drones further includes an oxygen-hydrogen sensor 160 and a hydrogen concentration sensor 170; the oxygen-hydrogen sensor 160 is connected to the first gas-liquid separator 20 via an oxygen exhaust valve 180; and the hydrogen concentration sensor 170 is connected to the hydrogen storage cylinder 130.

[0036] In a preferred embodiment, a first tail drain valve 190 is provided between the first drying pipe 80 and the water storage tank 10, and the first tail drain valve 190 is connected to the first drying pipe 80 and the water storage tank 10 respectively; a second tail drain valve 200 is provided between the second drying pipe 90 and the water storage tank 10, and the second tail drain valve 200 is connected to the second drying pipe 90 and the water storage tank 10 respectively; the first tail drain valve 190 is connected to the second tail drain valve 200.

[0037] In a preferred embodiment, the hydrogen production, compression and storage system for hydrogen-powered drones further includes a first switching valve 210 and a second switching valve 220; the first switching valve 210 is connected to the first drying tube 80 and the second switching valve 220 respectively; the second switching valve 220 is connected to the second drying tube 90 and the second gas-liquid separator 70 respectively.

[0038] In a preferred embodiment, the hydrogen production, compression, and storage system for hydrogen-powered drones further includes a proportional valve 230, a third switching valve 240, and a fourth switching valve 250; the third switching valve 240 is connected to the first drying pipe 80, the first air pump 100, and the fourth switching valve 250 respectively; the fourth switching valve 250 is connected to the first air pump 100 and the second drying pipe 90 respectively; one end of the proportional valve 230 is connected between the first drying pipe 80 and the third switching valve 240, and the other end is connected between the second drying pipe 90 and the fourth switching valve 250.

[0039] In a preferred embodiment, the hydrogen production, compression and storage system for hydrogen-powered drones further includes a first pressure sensor 260 and a fifth switching valve 270; the fifth switching valve 270 is connected to the first pressure sensor 260 and the first air pump 100 respectively; one end of the first pressure sensor 260 away from the fifth switching valve 270 is connected between the third switching valve 240 and the fourth switching valve 250.

[0040] In a preferred embodiment, the hydrogen production, compression and storage system for hydrogen-powered drones further includes a second pressure sensor 280, a sixth switching valve 290 and a mechanical pressure reducing valve 300 connected in sequence; the second pressure sensor 280 is connected to the second air pump 150; and the mechanical pressure reducing valve 300 is connected to the hydrogen storage cylinder 130.

[0041] In a preferred embodiment, a first one-way valve 310, a pressure relief valve 320, a shut-off valve 330, and a third pressure sensor 340 are sequentially connected between the mechanical pressure reducing valve 300 and the hydrogen storage cylinder 130. The first one-way valve 310 is connected to the mechanical pressure reducing valve 300; the third pressure sensor 340 is connected to the hydrogen storage cylinder 130; and the pressure relief valve 320 is connected to the tailpipe 350.

[0042] In a preferred embodiment, the hydrogen production, compression, and storage system for hydrogen-powered drones further includes a flame arrester 360, a second one-way valve 370, and a hydrogen discharge valve 380 connected in sequence; the flame arrester 360 is connected to the tail discharge valve 350; the hydrogen discharge valve 380 is connected to the water storage tank 10; and the end of the first tail discharge valve 190 near the second tail discharge valve 200 is connected between the flame arrester 360 and the second one-way valve 370.

[0043] In a preferred embodiment, a first drain valve 390 is provided between the water storage tank 10 and the first gas-liquid separator 20. The first drain valve 390 is connected to the water storage tank 10 and the first gas-liquid separator 20 respectively. The first gas-liquid separator 20 is connected to the first level gauge 400.

[0044] In a preferred embodiment, the first gas-liquid separator 20 is connected to a pure water source 420 via a water supply valve 410, and the water supply valve 410 is connected to the first gas-liquid separator 20 and the pure water source 420 respectively; the oxygen exhaust valve 180 is connected to the tail exhaust 350.

[0045] In a preferred embodiment, a manual valve 430 is provided between the air-cooled radiator 40 and the deionizer 50, and the manual valve 430 is connected to the air-cooled radiator 40 and the deionizer 50 respectively; the deionizer 50 is connected to the drain manual valve 440; and the drain manual valve 440 is connected to the tail drain 350.

[0046] In a preferred embodiment, a conductivity sensor 450 and a water flow meter 460 are connected between the air-cooled radiator 40 and the PEM electrolysis cell 60; the water flow meter 460 is located close to the PEM electrolysis cell 60.

[0047] A temperature sensor 470 is provided between the PEM electrolysis cell 60 and the first gas-liquid separator 20. The temperature sensor 470 is connected to the PEM electrolysis cell 60 and the first gas-liquid separator 20 respectively.

[0048] In a preferred embodiment, the second gas-liquid separator 70 is connected to the second level gauge 480; a second drain valve 490 is provided between the second gas-liquid separator 70 and the water storage tank 10, and the second drain valve 490 is connected to the second gas-liquid separator 70 and the water storage tank 10 respectively.

[0049] Combination Figures 1 to 3 The working process of the hydrogen production, compression, and storage system for hydrogen-powered drones applicable to this application is as follows:

[0050] The controller first determines the pressure of the third pressure sensor. If the pressure of the third pressure sensor is greater than P, there is sufficient hydrogen in the hydrogen storage tank (i.e., the drone's hydrogen storage tank), and the system remains in standby mode. If the pressure of the third pressure sensor is less than P, there is insufficient hydrogen in the hydrogen storage tank, and hydrogen needs to be added. The controller then enters the hydrogen production mode. The controller controls the start and stop of all electrical components and electric valves, as well as the sequential control and system state transitions.

[0051] After the controller enters hydrogen production mode, it first starts the water pump. Once the pump is running normally, the system checks the water flow meter's feedback value to determine if the water circuit is functioning correctly. If the flow meter reading is within the normal range, it indicates that the water circuit is unobstructed, without leaks or water shortages. Subsequently, the controller controls the hydrogen production power supply, gradually increasing the current to the PEM electrolyzer's rated current in a stepped manner, and opens the hydrogen and oxygen discharge valves. After the PEM electrolyzer is properly loaded, it produces hydrogen and oxygen. The oxygen flows with the water into the first gas-liquid separator. The separated oxygen passes through the oxygen discharge valve and the oxygen-hydrogen sensor to the tail section. The oxygen-hydrogen sensor monitors the hydrogen content in the oxygen. If the hydrogen content is higher than the set value Hmax, the system shuts down; if it is lower than Hmax, the system operates normally. The separated water continues to participate in the water circulation. The first liquid level sensor monitors the water volume. If the water volume is lower than the set value W, the water supply valve is opened to replenish water from the purified water source. Water in the first gas-liquid separator is powered by a water pump and flows through an air-cooled radiator. The air-cooled radiator is controlled in a closed loop based on feedback signals from a temperature sensor to ensure that the PEM electrolyzer operates within a suitable temperature range. A portion of the water from the air-cooled radiator outlet flows through a manual valve into a deionizer. The deionizer removes excess ions from the water path to ensure the purity of the water entering the electrolyzer. A conductivity sensor monitors the water purity, and if the water purity reading is too low, the resin inside the deionizer can be replaced. The water from the deionizer outlet flows back into the electrolyzer, and the water in the water path circulates continuously, consuming electricity and generating gas.

[0052] The generated hydrogen gas is separated into hydrogen and liquid water in a second gas-liquid separator. The liquid water continuously accumulates, and a second level gauge monitors the liquid level inside the separator. Once the set value is reached, the second drain valve opens, and the water in the second gas-liquid separator is discharged into a water storage tank. The liquid water in the water storage tank can be discharged back into the first gas-liquid separator through the first drain valve, thus recycling water and reducing waste. The gaseous liquid is discharged to the tailpipe through a hydrogen discharge valve, a second one-way valve, and a flame arrester. The flame arrester improves safety when venting hydrogen. Because the hydrogen separated by the second gas-liquid separator contains gaseous water, it cannot be directly introduced into the hydrogen storage pipe and needs to be dried. Therefore, the hydrogen is subsequently introduced into a drying device. The drying device includes components such as a drying tube, a switching valve, a tailpipe valve, and a pressure sensor. The drying tube contains a molecular sieve and a filter screen. The molecular sieve is used to adsorb gaseous water.

[0053] The drying device uses the principle of pressure swing adsorption, and completes periodic adsorption and regeneration by opening and closing different switching valves, opening and closing the tail valve, adjusting the opening of the proportional valve, and receiving signal feedback from the pressure sensor. First, open the first switch valve and close the second switch valve. Gas flows into the first drying tube and is adsorbed by the molecular sieve inside the first drying tube. Then, open the third switch valve, and the gas gathers at the front end of the fifth switch valve. At this time, the first drying tube is used for adsorption, and the second drying tube is regenerated. Open the proportional valve and adjust the pressure at the rear end of the proportional valve. Gas enters from the upper side of the second drying tube. Through pressure difference and flow rate changes, water inside the molecular sieve of the second drying tube is removed. After the gas and water mix, they flow out from the lower side. Open the second tail valve, and the mixed water vapor flows to the hydrogen discharge pipeline. After passing through the flame arrester, it is discharged to the tail outlet. The regeneration time and adsorption time are calibrated and tested. The time is T. After one cycle of time T is completed, the first drying tube is adjusted to regeneration state and the second drying tube to adsorption state by switching the switch valves. At this time, the first switch valve is closed, the second switch valve is open, the third switch valve is closed, the fourth switch valve is open, the first tail outlet valve is open, the second tail outlet valve is closed, and the proportional valve is open in the purification device. After a set running time T, the adsorption and regeneration states are switched again, and the cycle is repeated until the gas cylinder is full of hydrogen or the system is shut down.

[0054] The first pressure sensor monitors the pressure inside the downstream pipeline of the purification unit. As gas is continuously generated and purified, the reading of the fifth pressure sensor continuously increases until it reaches P1. When P1 is set to 3 MPa, the fifth switch valve opens, the motor starts, and the first and second gas pumps begin to work. The first gas pump pressurizes the hydrogen gas at an inlet pressure of 3 MPa to 10-13 MPa, and then the second gas pump continues to pressurize it. The outlet pressure of the second gas pump increases to P2, with a value ranging from 38 to 45 MPa. Through two-stage compression, the gas is increased from P1 to P2, meeting the gas source pressure requirements when filling the gas cylinder with hydrogen. The second pressure sensor monitors the pressure at the outlet of the second gas pump. If the pressure is greater than 3 MPa... After reaching 5 MPa, the sixth switch valve opens, and the high-pressure gas is depressurized by the mechanical pressure reducing valve, which is set to 35 MPa. The gas then passes through the first one-way valve. This first one-way valve prevents the cylinder pressure from exceeding the compressor pressure, thus avoiding gas backflow that could damage components. Pressure relief can be performed by inputting a command through the controller. After depressurization, the gas passes through the shut-off valve, which opens, allowing the high-pressure gas to fill the hydrogen storage cylinder. The third pressure sensor monitors the pressure inside the cylinder. When the pressure rises to the set value P3, the hydrogen storage cylinder is filled with hydrogen, and the system stops charging. The hydrogen concentration sensor detects whether a hydrogen leak is detected during charging. If a leak is detected, the controller jumps to a fault state, and the system shuts down immediately.

[0055] After the gas cylinder is full, close the shut-off valve, motor, water pump, air-cooled radiator, hydrogen production power supply, and other components. Release the high pressure inside the pipeline and container using the pressure relief valve. When the pressure drops to P4, it indicates that the pipeline pressure has been completely released. Close the remaining valves. At this point, the hydrogen storage cylinder can be replaced. Then, shut down the system or refill the gas as needed.

[0056] The system proposed in this application can solve the problem of hydrogen-powered drones being unable to obtain hydrogen sources in the field; at the same time, compared with traditional hydrogen production systems and diaphragm compressors, the system proposed in this application has advantages such as high integration, small size, light weight and low cost.

[0057] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0059] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A hydrogen production, compression, and storage system suitable for hydrogen-powered drones, characterized in that, The system includes a water storage tank, a first gas-liquid separator, a water pump, an air-cooled radiator, a deionizer, a PEM electrolyzer, a second gas-liquid separator, a first drying tube, a second drying tube, a first air pump, a motor, a controller, and a hydrogen storage cylinder. The first gas-liquid separator is connected to the water storage tank, the water pump, and the PEM electrolyzer. The air-cooled radiator is connected to the water pump, the deionizer, and the PEM electrolyzer. The second gas-liquid separator is connected to the PEM electrolyzer, the water storage tank, and the second drying tube. The first drying tube is connected to the water storage tank, the second drying tube, and the first air pump. The second drying tube is connected to the water storage tank and the first air pump. The first air pump is connected to the hydrogen storage cylinder, the motor, and the controller. The motor is connected to the controller.

2. The hydrogen production, compression, and storage system for hydrogen-powered drones according to claim 1, characterized in that, The hydrogen production, compression and storage system for hydrogen-powered drones also includes a hydrogen production power source, which is connected to the PEM electrolyzer. A second air pump is provided between the first air pump and the hydrogen storage cylinder, and the second air pump is connected to the first air pump, the motor, the controller, and the hydrogen storage cylinder respectively.

3. The hydrogen production, compression, and storage system for hydrogen-powered drones according to claim 1, characterized in that, The hydrogen production, compression, and storage system for the applicable hydrogen-powered drone also includes an oxygen-hydrogen sensor and a hydrogen concentration sensor; the oxygen-hydrogen sensor is connected to the first gas-liquid separator via an oxygen venting valve; and the hydrogen concentration sensor is connected to the hydrogen storage cylinder.

4. The hydrogen production, compression, and storage system for hydrogen-powered drones according to claim 1, characterized in that, A first tail drain valve is provided between the first drying pipe and the water storage tank, and the first tail drain valve is connected to the first drying pipe and the water storage tank respectively; a second tail drain valve is provided between the second drying pipe and the water storage tank, and the second tail drain valve is connected to the second drying pipe and the water storage tank respectively; the first tail drain valve is connected to the second tail drain valve. The hydrogen production, compression, and storage system for hydrogen-powered drones also includes a first switching valve and a second switching valve; the first switching valve is connected to the first drying tube and the second switching valve respectively; the second switching valve is connected to the second drying tube and the second gas-liquid separator respectively.

5. The hydrogen production, compression, and storage system for hydrogen-powered drones according to claim 4, characterized in that, The hydrogen production, compression, and storage system for hydrogen-powered drones also includes a proportional valve, a third switching valve, and a fourth switching valve; the third switching valve is connected to the first drying pipe, the first air pump, and the fourth switching valve respectively; the fourth switching valve is connected to the first air pump and the second drying pipe respectively; one end of the proportional valve is connected between the first drying pipe and the third switching valve, and the other end is connected between the second drying pipe and the fourth switching valve.

6. The hydrogen production, compression, and storage system for hydrogen-powered drones according to claim 5, characterized in that, The hydrogen production, compression, and storage system for hydrogen-powered drones also includes a first pressure sensor and a fifth switching valve; the fifth switching valve is connected to the first pressure sensor and the first air pump respectively; the end of the first pressure sensor away from the fifth switching valve is connected between the third switching valve and the fourth switching valve.

7. The hydrogen production, compression, and storage system for hydrogen-powered drones according to claim 2, characterized in that, The hydrogen production, compression, and storage system for hydrogen-powered drones further includes a second pressure sensor, a sixth switching valve, and a mechanical pressure reducing valve connected in sequence; the second pressure sensor is connected to the second gas pump; and the mechanical pressure reducing valve is connected to the hydrogen storage cylinder. A first check valve, a pressure relief valve, a shut-off valve, and a third pressure sensor are sequentially connected between the mechanical pressure reducing valve and the hydrogen storage cylinder. The first check valve is connected to the mechanical pressure reducing valve; the third pressure sensor is connected to the hydrogen storage cylinder; and the pressure relief valve is connected to the tailpipe.

8. The hydrogen production, compression, and storage system for hydrogen-powered drones according to claim 7, characterized in that, The hydrogen production, compression, and storage system for the applicable hydrogen-powered drone further includes a flame arrester, a second one-way valve, and a hydrogen discharge valve connected in sequence; the flame arrester is connected to the tailpipe; the hydrogen discharge valve is connected to the water storage tank; and the end of the first tailpipe valve near the second tailpipe valve is connected between the flame arrester and the second one-way valve.

9. The hydrogen production, compression, and storage system for hydrogen-powered drones according to claim 1, characterized in that, A first drain valve is provided between the water storage tank and the first gas-liquid separator, and the first drain valve is connected to the water storage tank and the first gas-liquid separator respectively; the first gas-liquid separator is connected to the first liquid level gauge; The first gas-liquid separator is connected to a pure water source via a water supply valve, which is connected to both the first gas-liquid separator and the pure water source; the oxygen exhaust valve is connected to the tailpipe.

10. The hydrogen production, compression, and storage system for hydrogen-powered drones according to claim 1, characterized in that, A manual valve is provided between the air-cooled radiator and the deionizer, and the manual valve is connected to both the air-cooled radiator and the deionizer; the deionizer is connected to a drain manual valve. A conductivity sensor and a water flow meter are connected between the air-cooled radiator and the PEM electrolytic cell; the water flow meter is positioned close to the PEM electrolytic cell. A temperature sensor is provided between the PEM electrolyzer and the first gas-liquid separator, and the temperature sensor is connected to the PEM electrolyzer and the first gas-liquid separator respectively. The second gas-liquid separator is connected to the second liquid level gauge; a second drain valve is provided between the second gas-liquid separator and the water storage tank, and the second drain valve is connected to the second gas-liquid separator and the water storage tank respectively.

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