Hydrogen-powered mobile power supply

Abstract

This application provides a hydrogen-powered mobile power supply, including an electrolyzer, a photovoltaic power generation device, a water supply device, a solid-state hydrogen storage device, and a housing. The electrolyzer is used to produce hydrogen. The photovoltaic power generation device is electrically connected to the electrolyzer and supplies power to the electrolyzer. The water supply device is connected to the electrolyzer and supplies pure water to it. The solid-state hydrogen storage device is connected to the electrolyzer and stores the hydrogen produced by the electrolyzer. The electrolyzer, water supply device, and solid-state hydrogen storage device are housed within the housing. This application addresses the problem of limited convenience for outdoor power supply in existing hydrogen fuel cell mobile power supplies.

Description

Technical Field

[0001] This application relates to the technical field of hydrogen energy, and in particular to a hydrogen-powered mobile power source. Background Technology

[0002] Hydrogen fuel cell portable power banks are increasingly widely used due to their eco-friendly nature, as the only byproduct of power generation is water. Existing hydrogen fuel cell portable power banks consist of a hydrogen fuel cell, controller, solenoid valve, and solid hydrogen storage tank. When the hydrogen fuel cell is started, the controller opens the solenoid valve, allowing hydrogen from the solid hydrogen storage tank to be introduced into the fuel cell, where it generates electricity. However, this type of portable power bank requires the solid hydrogen storage tank to be pre-filled with hydrogen before use. Once the hydrogen is depleted, the power bank cannot provide on-site power, making it inconvenient for outdoor power supply scenarios (such as camping). Therefore, existing hydrogen fuel cell portable power banks suffer from limited convenience in outdoor power supply scenarios. Utility Model Content

[0003] The purpose of this application is to provide a hydrogen-powered portable power source that improves the convenience of outdoor power supply scenarios, comprising an electrolyzer, a photovoltaic power generation device, a water supply device, a solid-state hydrogen storage device, and a housing. The electrolyzer is used to produce hydrogen. The photovoltaic power generation device is electrically connected to the electrolyzer and supplies power to the electrolyzer. The water supply device is connected to the electrolyzer and provides pure water to the electrolyzer. The solid-state hydrogen storage device is connected to the electrolyzer and stores the hydrogen produced by the electrolyzer. The electrolyzer, the water supply device, and the solid-state hydrogen storage device are disposed within the housing.

[0004] Optionally, the water supply device includes a water pump and a water tank, the water pump is connected to the electrolytic cell, the water tank is connected to the water pump, and the water tank is used to store pure water.

[0005] Optionally, the hydrogen-powered mobile power supply further includes a water-gas separator, which is connected to the electrolyzer and the water tank.

[0006] Optionally, the hydrogen-powered mobile power supply also includes a dryer, which is connected to the water-gas separator and the solid-state hydrogen storage device, and the hydrogen flowing out of the dryer flows to the solid-state hydrogen storage device.

[0007] Optionally, the hydrogen-powered mobile power source also includes a fuel cell, which is connected to the solid-state hydrogen storage device.

[0008] Optionally, the hydrogen-powered mobile power source further includes a lithium battery and a control device, wherein the lithium battery is electrically connected to the fuel cell and the control device is electrically connected, and the lithium battery is used to power the control device.

[0009] Optionally, the hydrogen-powered mobile power supply further includes a first solenoid valve, which is connected to the fuel cell and the electrolyzer respectively. Hydrogen flowing out of the electrolyzer flows to the fuel cell via the first solenoid valve. The first solenoid valve is used to cut off the hydrogen supply to the fuel cell when storing hydrogen in the solid hydrogen storage device.

[0010] Optionally, the hydrogen-powered mobile power source further includes a pressure reducing valve, which is connected to the first solenoid valve and the fuel cell. Hydrogen gas flowing out from the first solenoid valve flows to the fuel cell via the pressure reducing valve.

[0011] Optionally, the hydrogen-powered mobile power supply also includes a control switch, which is electrically connected to the control device and the photovoltaic power generation device. The control switch is used to cut off the power supply to the electrolyzer when the solid-state hydrogen storage device supplies hydrogen.

[0012] Optionally, the hydrogen-powered mobile power supply also includes a one-way valve, which is connected to the electrolyzer and the solid-state hydrogen storage device. Hydrogen flowing out of the electrolyzer flows to the solid-state hydrogen storage device via the one-way valve.

[0013] The beneficial effects of this application are as follows: It incorporates an electrolyzer, a photovoltaic power generation device, a water supply device, a solid-state hydrogen storage device, and a housing. The electrolyzer is used to produce hydrogen. The photovoltaic power generation device is electrically connected to the electrolyzer, supplying power to the electrolyzer. The water supply device is connected to the electrolyzer, providing pure water to the electrolyzer. The solid-state hydrogen storage device is connected to the electrolyzer, storing the hydrogen produced by the electrolyzer. The electrolyzer, water supply device, and solid-state hydrogen storage device are housed within the housing. Once the hydrogen in the solid-state hydrogen storage device is depleted, pure water can be electrolyzed on-site using the electrolyzer, photovoltaic power generation device, and water supply device to produce hydrogen, improving convenience in outdoor power supply scenarios.

[0014] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, the following describes the application in detail with reference to the preferred embodiments and accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a system block diagram of a hydrogen-powered mobile power supply according to one embodiment of this application;

[0016] Figure 2 This is a partial three-dimensional cross-sectional view of a hydrogen-powered mobile power supply (excluding the photovoltaic power generation device and removing a portion of the housing) in one embodiment of this application.

[0017] Figure 3 This is a perspective view of a hydrogen-powered mobile power source (excluding photovoltaic power generation devices) in one embodiment of this application.

[0018] In the attached figures, the following labels are used:

[0019] 100 Electrolytic Cell

[0020] 101 Photovoltaic Power Generation Device

[0021] 102 Water supply device

[0022] 1020 water pump

[0023] 1021 Water Tank

[0024] 103 Solid-state hydrogen storage device

[0025] 104 Casing

[0026] 105 Water-Air Separator

[0027] 106 Dryer

[0028] 107 Fuel Cell

[0029] 108 Lithium Battery

[0030] 109 Control Device

[0031] 110 First Solenoid Valve

[0032] 111 Pressure reducing valve

[0033] 112 Control Switch

[0034] 113 Check Valve

[0035] 114 Second Solenoid Valve

[0036] 115 Filter Detailed Implementation

[0037] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present application will now be described in detail with reference to the accompanying drawings and embodiments. To enable those skilled in the art to better understand the solutions of this application, the technical solutions in the embodiments of this application 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 this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0039] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0040] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] Please also refer to Figure 1 and Figure 2 This embodiment provides a hydrogen-powered mobile power source, including an electrolyzer 100, a photovoltaic power generation device 101, a water supply device 102, a solid-state hydrogen storage device 103, and a housing 104. The electrolyzer 100 is used to produce hydrogen. The photovoltaic power generation device 101 is electrically connected to the electrolyzer 100 and supplies power to the electrolyzer 100. The water supply device 102 is connected to the electrolyzer 100 and supplies pure water to the electrolyzer 100. The solid-state hydrogen storage device 103 is connected to the electrolyzer 100 and stores the hydrogen produced by the electrolyzer 100. The electrolyzer 100, the water supply device 102, and the solid-state hydrogen storage device 103 are housed within the housing 104.

[0042] like Figure 1As shown, by setting up an electrolyzer 100, a photovoltaic power generation device 101, a water supply device 102, and a solid hydrogen storage device 103, once the hydrogen in the solid hydrogen storage device 103 is used up, pure water can be electrolyzed on-site using the electrolyzer 100, the photovoltaic power generation device 101, and the water supply device 102 to produce hydrogen, which improves the convenience in outdoor power supply scenarios.

[0043] like Figure 1 As shown, the electrolyzer 100 can be a PEM (Proton Exchange Membrane) electrolyzer or an AEM (Anion Exchange Membrane) electrolyzer, etc. The photovoltaic power generation device 101 can be electrically connected to the electrolyzer 100 via wires and supply power to the electrolyzer 100 for hydrogen production. The photovoltaic power generation device 101 can be a photovoltaic panel, and its power generation area can be configured according to the power of the electrolyzer 100. The larger the hydrogen production power of the electrolyzer 100, the larger the required power generation area of ​​the photovoltaic power generation device 101. For example, the photovoltaic power generation device 101 can be a 6-square-meter foldable photovoltaic panel. The photovoltaic power generation device 101 can also be directly connected to electrical equipment for power supply.

[0044] Please also refer to Figure 1 and Figure 2 The specific configuration of the water supply device 102 can be found in the subsequent description of the embodiments. The water supply device 102 can be connected to the electrolytic cell 100 via a stainless steel pipe or a seamless steel pipe. Pure water refers to H2O containing low ionic impurities, low organic matter, and low microorganisms. The solid hydrogen storage device 103 can be a stainless steel hydrogen storage tank or an aluminum alloy hydrogen storage tank, and the solid hydrogen storage device 103 is internally equipped with hydrogen storage material (e.g., the hydrogen storage material can be a metal hydride (such as LaNi5, TiMn2, TiFe, etc.)). The solid hydrogen storage device 103 can be connected to the electrolytic cell 100 via a rubber tube, stainless steel pipe, or seamless steel pipe. The shell 104 can be made of plastic or steel. The electrolytic cell 100, the water supply device 102, and the solid hydrogen storage device 103 can be fixed to the inside of the shell 104 or placed inside the shell 104 by means of screwing (e.g., fixing with bolts) or riveting. The shell 104 can be rectangular.

[0045] like Figure 1As shown, optionally, the water supply device 102 includes a water pump 1020 and a water tank 1021. The water pump 1020 is connected to the electrolytic cell 100, and the water tank 1021 is connected to the water pump 1020. The water tank 1021 is used to store pure water. The water pump 1020 can be connected to the electrolytic cell 100 through a PU tube, stainless steel tube, or seamless steel tube, and the water tank 1021 and the water pump 1020 can be connected through a PU tube, stainless steel tube, or seamless steel tube. The water pump 1020 can be an electric pump. The water tank 1021 can be made of steel or plastic. The water pump 1020 is used to transport the pure water in the water tank 1021 to the electrolytic cell 100. The water supply device 102 can consist of the water pump 1020 and the water tank 1021.

[0046] like Figure 1 As shown, optionally, the hydrogen-powered mobile power supply also includes a water-gas separator 105, which is connected to the electrolyzer 100 and a water tank 1021. With this configuration, water in the hydrogen flowing out of the electrolyzer 100 can be separated by the water-gas separator 105 and stored in the water tank 1021, achieving water recycling. The water-gas separator 105 and the electrolyzer 100 can be connected via rubber tubing, stainless steel tubing, or seamless steel tubing, and the water-gas separator 105 and the water tank 1021 can be connected via PU tubing, stainless steel tubing, or seamless steel tubing. The water-gas separator 105 is used to separate water and hydrogen from the hydrogen flowing out of the electrolyzer 100 and transport the water to the water tank 1021. The water-gas separator 105 can be installed in the housing 104 (see housing 104 for reference). Figure 3 Inside. Water-air separator 105 can be a cyclone water-air separator.

[0047] like Figure 1 As shown, optionally, the hydrogen-powered mobile power supply also includes a dryer 106, which is connected to a water-gas separator 105 and a solid-state hydrogen storage device 103. Hydrogen flowing from the dryer 106 flows into the solid-state hydrogen storage device 103. Before entering the solid-state hydrogen storage device 103, the hydrogen in the water-gas separator 105 is dried in the dryer 106 to prevent oxidation of the hydrogen storage material by water in the hydrogen and the storage material in the solid-state hydrogen storage device 103, thus avoiding the failure of the storage material.

[0048] The dryer 106 and the water-gas separator 105 can be connected via rubber hoses, stainless steel pipes, or seamless steel pipes. The dryer 106 and the solid hydrogen storage device 103 can also be connected via rubber hoses, stainless steel pipes, or seamless steel pipes. The dryer 106 can be housed within the casing 104 (see casing 104 for details). Figure 3 The dryer 106 can be an adsorption dryer, with an adsorbent (such as molecular sieve, silica gel, etc.) inside.

[0049] like Figure 1As shown, optionally, the hydrogen-powered mobile power source also includes a fuel cell 107, which is connected to a solid-state hydrogen storage device 103. The fuel cell 107 and the solid-state hydrogen storage device 103 can be connected via rubber tubing, stainless steel tubing, or seamless steel tubing. The fuel cell 107 and the dryer 106 can also be connected via rubber tubing, stainless steel tubing, or seamless steel tubing. The solid-state hydrogen storage device 103 provides hydrogen to the fuel cell 107 to generate electricity. The fuel cell 107 can be housed in a casing 104 (see casing 104 for reference). Figure 3 The fuel cell 107 can be a hydrogen fuel cell. For example, the fuel cell 107 can be a proton exchange membrane fuel cell (PEMFC).

[0050] like Figure 1 As shown, optionally, the hydrogen-powered mobile power supply also includes a lithium battery 108 and a control device 109. The lithium battery 108 is electrically connected to the fuel cell 107, and the lithium battery 108 is electrically connected to the control device 109. The lithium battery 108 supplies power to the control device 109. This configuration allows the fuel cell 107 to charge the lithium battery 108, and the charged lithium battery 108 then supplies power to the control device 109. The control device 109 can be a PLC (Programmable Logic Controller) or an industrial computer. The lithium battery 108 can be electrically connected to the fuel cell 107 via wires. The lithium battery 108 can also be electrically connected to the control device 109 via wires. The lithium battery 108 and the control device 109 can be housed in a housing 104 (see housing 104 for reference). Figure 2 )Inside.

[0051] like Figure 1 As shown, optionally, the hydrogen-powered mobile power source also includes a first solenoid valve 110, which is connected to the fuel cell 107 and the electrolyzer 100 respectively. Hydrogen gas flowing out of the electrolyzer 100 flows to the fuel cell 107 via the first solenoid valve 110. The first solenoid valve 110 is used to cut off the hydrogen supply to the fuel cell 107 when the solid-state hydrogen storage device 103 is storing hydrogen. With this configuration, the fuel cell 107 can stop generating electricity when the solid-state hydrogen storage device 103 is storing hydrogen.

[0052] The first solenoid valve 110 and the fuel cell 107 can be connected via rubber tubing, stainless steel tubing, or seamless steel tubing. The first solenoid valve 110 and the electrolytic cell 100 can also be connected via rubber tubing, stainless steel tubing, or seamless steel tubing. The first solenoid valve 110 can be housed in the housing 104 (see housing 104 for details). Figure 2 The first solenoid valve 110 can be a pilot-operated solenoid valve. The first solenoid valve 110 can be electrically connected to the control device 109 via wires.

[0053] like Figure 1As shown, optionally, the hydrogen-powered mobile power supply also includes a pressure reducing valve 111, which is connected to a first solenoid valve 110 and a fuel cell 107. Hydrogen gas flowing from the first solenoid valve 110 flows to the fuel cell 107 via the pressure reducing valve 111. This configuration prevents excessively high pressure hydrogen gas flowing from the solid-state hydrogen storage device 103 from damaging the fuel cell 107. The pressure reducing valve 111 and the first solenoid valve 110 can be connected via rubber tubing, stainless steel tubing, or seamless steel tubing. The pressure reducing valve 111 and the fuel cell 107 can also be connected via rubber tubing, stainless steel tubing, or seamless steel tubing. The pressure reducing valve 111 can be located within the housing 104 (see housing 104 for reference). Figure 2 )Inside.

[0054] like Figure 1 As shown, optionally, the hydrogen-powered mobile power supply also includes a control switch 112, which is electrically connected to the control device 109 and the photovoltaic power generation device 101. The control switch 112 is used to cut off the power supply to the electrolyzer 100 when the solid-state hydrogen storage device 103 supplies hydrogen. The control switch 112 can be a relay. The control switch 112 and the control device 109 can be electrically connected via wires. The control switch 112 and the photovoltaic power generation device 101 can be electrically connected via wires. The control switch 112 and the electrolyzer 100 can be electrically connected via wires.

[0055] like Figure 1 As shown, when the solid-state hydrogen storage device 103 is supplying hydrogen, the control device 109 can control the control switch 112 to cut off the power supply to the electrolyzer 100 and control the first solenoid valve 110 to open, so as to stop the electrolysis hydrogen production of the electrolyzer 100 and only allow the solid-state hydrogen storage device 103 to release hydrogen to the fuel cell 107. The control switch 112 can be located in the housing 104 (see housing 104 for reference). Figure 2 )Inside.

[0056] like Figure 1 As shown, optionally, the hydrogen-powered mobile power supply also includes a one-way valve 113. The one-way valve 113 is connected to the electrolyzer 100 and the solid-state hydrogen storage device 103. Hydrogen gas flowing from the electrolyzer 100 flows to the solid-state hydrogen storage device 103 via the one-way valve 113. The one-way valve 113 can be a check ball valve or a spring-loaded hydrogen one-way valve. The one-way valve 113 and the electrolyzer 100 can be connected via rubber tubing, stainless steel tubing, or seamless steel tubing. The one-way valve 113 and the solid-state hydrogen storage device 103 can also be connected via rubber tubing, stainless steel tubing, or seamless steel tubing. The one-way valve 113 ensures that the hydrogen gas flowing from the electrolyzer 100 can only flow to the solid-state hydrogen storage device 103, preventing hydrogen gas in the solid-state hydrogen storage device 103 from flowing back into the electrolyzer 100. The one-way valve 113 can be installed in the housing 104 (see housing 104 for reference). Figure 2 )Inside.

[0057] like Figure 1 As shown, optionally, the hydrogen-powered mobile power supply also includes a second solenoid valve 114. The second solenoid valve 114 is connected to the solid-state hydrogen storage device 103 and the electrolyzer 100, respectively. Hydrogen gas flowing out of the electrolyzer 100 flows to the solid-state hydrogen storage device 103 via the second solenoid valve 114. The second solenoid valve 114 and the solid-state hydrogen storage device 103 can be connected via rubber tubing, stainless steel tubing, or seamless steel tubing. The second solenoid valve 114 and the electrolyzer 100 can be connected via rubber tubing, stainless steel tubing, or seamless steel tubing. The second solenoid valve 114 can be installed in the housing 104 (see housing 104 for reference). Figure 2 The second solenoid valve 114 can be a pilot-operated solenoid valve. The second solenoid valve 114 can be electrically connected to the control device 109 via wires.

[0058] The working principle of hydrogen-powered mobile power banks:

[0059] Please also refer to Figure 1 and Figure 2 The photovoltaic power generation device 101, control switch 112, and electrolytic cell 100 can be connected in sequence via wires. The electrolytic cell 100, water-gas separator 105, dryer 106, second solenoid valve 114, check valve 113, first solenoid valve 110, pressure reducing valve 111, and fuel cell 107 can be connected in sequence via pipes (e.g., rubber hoses, stainless steel pipes, or seamless steel pipes, hereinafter the same).

[0060] like Figure 1 As shown, the water-gas separator 105, water tank 1021, water pump 1020, filter 115, and electrolyzer 100 can be connected via pipelines. The solid hydrogen storage device 103 can be connected via pipelines to both the first solenoid valve 110 and the check valve 113. The fuel cell 107, lithium battery 108, and control device 109 can be electrically connected sequentially via wires.

[0061] like Figure 1 As shown, when hydrogen production is needed, the control device 109 can control the first solenoid valve 110 to close and the second solenoid valve 114 to open. The photovoltaic power generation device 101 directly converts light energy into electrical energy through the photovoltaic effect and supplies it to the electrolyzer 100 for hydrogen electrolysis. The electrolyzer 100 produces hydrogen using pure water supplied by the water pump 1020. The hydrogen produced by the electrolyzer 100 passes through the water-gas separator 105, and the separated water is transported to the water tank 1021. The hydrogen is then transported to the dryer 106 for further drying. The hydrogen flowing out of the dryer 106 passes through the second solenoid valve 114 and the one-way valve 113 before entering the solid hydrogen storage device 103.

[0062] like Figure 1As shown, when fuel cell 107 is needed to generate electricity, control device 109 can control control switch 112 and second solenoid valve 114 to close and control first solenoid valve 110 to open. At this time, hydrogen in solid hydrogen storage device 103 can enter fuel cell 107 through first solenoid valve 110 and pressure reducing valve 111. Fuel cell 107 generates electricity by oxidizing hydrogen. The electricity generated by fuel cell 107 is used to power electrical equipment on one side and lithium battery 108 on the other.

[0063] The hydrogen-powered mobile power supply provided in the embodiments of this application has been described in detail above. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application. All equivalent modifications or changes made in accordance with the spirit and technical concept of this application should still be covered by the claims of this application.

Claims

1. A hydrogen-powered mobile power supply, characterized in that, include: Electrolyzer, used for hydrogen production; A photovoltaic power generation device is electrically connected to the electrolytic cell, and the photovoltaic power generation device is used to supply power to the electrolytic cell; A water supply device connected to the electrolytic cell, the water supply device being used to supply pure water to the electrolytic cell; A solid-state hydrogen storage device connected to the electrolyzer, the solid-state hydrogen storage device being used to store hydrogen produced by the electrolyzer; and The shell, the electrolyzer, the water supply device and the solid hydrogen storage device are disposed in the shell.

2. The hydrogen-powered mobile power supply according to claim 1, characterized in that, The water supply device includes a water pump and a water tank. The water pump is connected to the electrolytic cell, and the water tank is connected to the water pump. The water tank is used to store pure water.

3. The hydrogen-powered mobile power supply according to claim 2, characterized in that, It also includes a water-gas separator, which is connected to the electrolytic cell and the water tank.

4. The hydrogen-powered mobile power supply according to claim 3, characterized in that, It also includes a dryer, which is connected to the water-gas separator and the solid hydrogen storage device, and the hydrogen flowing out of the dryer flows to the solid hydrogen storage device.

5. The hydrogen-powered mobile power supply according to claim 1, characterized in that, It also includes a fuel cell, which is connected to the solid hydrogen storage device.

6. The hydrogen-powered mobile power supply according to claim 5, characterized in that, It also includes a lithium battery and a control device, wherein the lithium battery is electrically connected to the fuel cell and the control device is electrically connected, and the lithium battery is used to power the control device.

7. The hydrogen-powered mobile power supply according to claim 5, characterized in that, It also includes a first solenoid valve, which is connected to the fuel cell and the electrolyzer respectively. Hydrogen flowing out of the electrolyzer flows to the fuel cell via the first solenoid valve. The first solenoid valve is used to cut off the hydrogen supply to the fuel cell when storing hydrogen in the solid hydrogen storage device.

8. The hydrogen-powered mobile power supply according to claim 7, characterized in that, It also includes a pressure reducing valve, which is connected to the first solenoid valve and the fuel cell, through which hydrogen flowing from the first solenoid valve flows to the fuel cell.

9. The hydrogen-powered mobile power supply according to claim 6, characterized in that, It also includes a control switch, which is electrically connected to the control device and the photovoltaic power generation device. The control switch is used to cut off the power supply to the electrolyzer when the solid hydrogen storage device supplies hydrogen.

10. The hydrogen-powered mobile power supply according to claim 1, characterized in that, It also includes a one-way valve, which is connected to the electrolyzer and the solid hydrogen storage device. Hydrogen gas flowing out of the electrolyzer flows to the solid hydrogen storage device via the one-way valve.

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