Integrated energy system for photo-hydrogen storage

Abstract

The utility model provides an integrated energy system for photo-hydrogen storage. The integrated energy system comprises a water storage tank and an external pure water system, the hydrogen production device is connected with a water path of the water storage tank; the upstream of the hydrogen storage device is connected with the hydrogen production device through a gas circuit, and the downstream of the hydrogen storage device is externally connected with a hydrogen energy gas appliance; the input end of the hydrogen production power supply is externally connected with a photoelectric conversion system, and the output end is electrically connected with the hydrogen production device; the input end of the charging controller is externally connected with a photoelectric conversion system; the input end of the energy storage battery is electrically connected with the output end of the charging controller, and the output end of the energy storage battery is externally connected with electric equipment through an inverter; and the control main board is used for controlling the electrification and operation of each electric device in the light-hydrogen storage and utilization integrated energy system through signals. According to the utility model, the energy loss caused by hydrogen power generation after solar power generation hydrogen production can be avoided, the light energy utilization efficiency is improved, the design of a fuel cell stack is cancelled, and the product cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen energy storage technology, specifically to an integrated energy system for photovoltaic hydrogen storage and utilization. Background Technology

[0002] Both sunlight and hydrogen are clean energy carriers. Sunlight can be converted into electricity, which can then be used to electrolyze water to produce hydrogen. The combustion of hydrogen produces only water vapor, with no carbon emissions. Therefore, some people in the field have conducted research combining solar energy and hydrogen energy technologies, and have designed integrated hydrogen production, storage, and utilization devices. These devices can conveniently convert two of nature's greatest resources—sunlight and water—into green hydrogen and electricity. By generating hydrogen through solar power and storing it in hydrogen form, and releasing it when needed, hydrogen can replace natural gas in powering gas appliances, helping to reduce dependence on fossil fuels, lower greenhouse gas emissions, and promote sustainable development.

[0003] However, some existing integrated hydrogen production and storage systems rely entirely on hydrogen energy storage, meaning that all solar power generated is used to produce hydrogen and store it as gas. When external hydrogen-powered appliances require hydrogen, it is supplied directly; when external electrical equipment needs electricity, it is generated through a fuel cell stack. This type of integrated hydrogen production and storage system has the following problems:

[0004] 1. The process of generating hydrogen using solar power and then using the hydrogen as fuel for power generation involves significant energy loss, resulting in low solar energy utilization efficiency.

[0005] 2. In extreme cases where solar energy is scarce and no hydrogen is stored, the equipment will be unable to supply gas and electricity normally, affecting the user experience. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an integrated photovoltaic-hydrogen storage and utilization energy system, which can solve the problems of low photovoltaic energy utilization efficiency and inability to supply gas and electricity to the outside under extreme conditions in the existing technology.

[0007] To achieve the above and other objectives, this utility model is implemented through the following technical solution: This utility model proposes an integrated photovoltaic-hydrogen storage and utilization energy system, including a water tank connected to an external pure water system; a hydrogen production device connected to the water tank via a water circuit; a hydrogen storage device connected upstream to the hydrogen production device via a gas circuit, and downstream to a hydrogen-powered gas appliance; a hydrogen production power supply with its input end connected to an external photoelectric conversion system and its output end electrically connected to the hydrogen production device; a charging controller with its input end connected to the external photoelectric conversion system; an energy storage battery with its input end electrically connected to the output end of the charging controller, and its output end connected to an external electrical device via an inverter; and a control motherboard used for signal control of the power-on and operation of each electrical device in the integrated photovoltaic-hydrogen storage and utilization energy system.

[0008] In one embodiment, the integrated photovoltaic-hydrogen storage and utilization energy system further includes a first AC / DC power supply, whose input terminal is connected to mains power and whose output terminal is connected to the input terminal of the hydrogen production device.

[0009] In one embodiment, the integrated photovoltaic-hydrogen storage and utilization energy system further includes a second AC / DC power supply, whose input terminal is connected to the mains power and whose output terminal is connected to the input terminal of the energy storage battery.

[0010] In one embodiment, the hydrogen storage device is installed on the upper part of the cabinet, and the upper end face or front face of the cabinet is provided with an access port, which is a square hole or multiple round holes.

[0011] In one embodiment, the hydrogen storage device is installed inside a hydrogen storage chamber, with the hydrogen charging / discharging end of the hydrogen storage device exposed outside the hydrogen storage chamber; the hydrogen storage chamber is equipped with a matching hydrogen concentration detection probe and a hydrogen concentration detector, with the hydrogen concentration detection probe positioned close to the hydrogen charging / discharging end of the hydrogen storage device.

[0012] In one embodiment, the hydrogen storage tank is installed on the upper part of the cabinet via a liquid collection plate. A drain hole is provided on the bottom side of the hydrogen storage tank, and a drain pipe is connected to the liquid collection plate. The condensate generated in the hydrogen storage tank is discharged to the liquid collection plate through the drain hole and then discharged from the cabinet via the drain pipe.

[0013] In one embodiment, the liquid collection plate is further provided with a hot and cold circulation device, which includes a compressor, a condenser, an evaporator, and a heating element. The compressor and the condenser are installed outside the hydrogen storage chamber, with the compressor located between the hydrogen storage chamber and the condenser. The evaporator and the heating element are installed inside the hydrogen storage chamber, with the evaporator located on the side closer to the compressor and the heating element surrounding the hydrogen storage device.

[0014] In one embodiment, the water storage tank is located below the hydrogen storage device, and a communication interface is provided on one side of the cabinet. The control motherboard is connected to the pure water system through the communication interface. A level gauge is provided inside the water storage tank and is connected to the control motherboard. The control motherboard communicates with the pure water system to start, run, or stop the system based on the water level detected by the level gauge.

[0015] In one embodiment, at least one gas-liquid separator is provided between the hydrogen production device and the hydrogen storage device. The gas-liquid separator is equipped with a condensation module for cooling the hydrogen entering the gas-liquid separator and condensing the water vapor in the hydrogen into water. The drain outlet of the gas-liquid separator is connected to the return water outlet of the water storage tank.

[0016] In one embodiment, the hydrogen outlet of the gas-liquid separator is connected to at least one stage of drying and regeneration device. The drying and regeneration device has a built-in molecular sieve and is covered with an electric heating film and an insulation layer in sequence. The drain outlet of the drying and regeneration device is connected to the return water outlet of the water storage tank.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This utility model incorporates an energy storage battery and a charging controller, enabling simultaneous hydrogen and electricity storage when solar energy is abundant. Most of the hydrogen produced by solar power is stored as hydrogen gas, while the remaining solar energy is stored as electricity in the energy storage battery. Therefore, hydrogen is only needed to supply gas appliances, while the energy storage battery provides power to external electrical equipment. This design not only avoids energy loss from producing hydrogen through solar power and then using it to generate electricity, improving solar energy utilization efficiency, but also ensures that external electrical equipment has power available even in extreme situations where solar energy is scarce or hydrogen is unavailable, enhancing the user experience. Furthermore, eliminating the need for a fuel cell stack reduces product costs.

[0019] 2. This utility model is equipped with an AC / DC power supply, which can introduce mains power function. In extreme cases where solar energy is scarce and hydrogen is unavailable, hydrogen can be produced using mains power, ensuring that hydrogen is available in the fuel gas and further improving the user's product experience.

[0020] 3. The hydrogen storage device of this utility model is installed on the upper part of the cabinet, and the design of the access port makes it convenient to access, replace and maintain the hydrogen storage device, further improving the user's product experience;

[0021] 4. This utility model is equipped with a hydrogen concentration detector and a hydrogen concentration detection probe, which can monitor the hydrogen concentration near the opening of the hydrogen storage device in real time. When the hydrogen concentration is too high, the hydrogen concentration detector can issue an alarm to provide a safety warning, effectively improving the safety of the system.

[0022] 5. The drainage hole design of the hydrogen storage tank and the drainage pipe design of the liquid collection plate of this utility model help to drain the condensate generated in the hydrogen storage tank and effectively prevent the condensate from accumulating in the hydrogen storage tank or dripping onto various electrical devices, causing water damage to the devices and ensuring electrical safety.

[0023] 6. The hot and cold circulation device of this utility model can improve the hydrogen storage and dehydrogenation efficiency of the hydrogen storage device and ensure that the temperature is within a reasonable range during the charging and dehydrogenation process.

[0024] 7. The design of the communication interface and level gauge of this utility model enables the real-time monitoring results of the level gauge to communicate with the pure water system, realizing the intelligent automatic water replenishment function, which solves the pain points of the existing system that requires frequent manual water replenishment and cannot replenish water in real time; the realization of real-time automatic water replenishment can also avoid the problem of wasting solar power caused by the equipment stopping hydrogen production due to water shortage.

[0025] 8. The gas-water separation device of this utility model is equipped with a condensation module, which can condense water vapor in hydrogen into water, so that water vapor and hydrogen are separated more thoroughly. Moreover, the water condensed by the gas-water separation device can be reused, effectively reducing water waste.

[0026] 9. This utility model connects at least one stage of drying and regeneration device to the hydrogen outlet of the gas-water separation device, which can further remove water vapor from the hydrogen and discharge the water adsorbed by the molecular sieve in the drying and regeneration device through the electric heating film, eliminating the need for regular replacement and improving the user's product experience; moreover, the water can be reused, effectively reducing water waste.

[0027] 10. The integrated photovoltaic-hydrogen storage and utilization energy system provided by this utility model has three functions: hydrogen production, hydrogen transportation and power supply. It can conveniently convert solar energy and water into green hydrogen energy and electricity. It can realize the recycling of water, hydrogen and oxygen in the equipment throughout the entire equipment, realize the effective utilization of resources and environmentally friendly process. Attached Figure Description

[0028] Figure 1 The diagram shown is a first-angle structural schematic of an integrated photovoltaic-hydrogen storage and utilization energy system according to this utility model.

[0029] Figure 2 The diagram shown is a second-angle structural schematic of an integrated photovoltaic-hydrogen storage and utilization energy system according to this utility model.

[0030] Figure 3 The diagram shown is a schematic diagram of the internal structure of an integrated photovoltaic-hydrogen storage and utilization energy system according to this utility model.

[0031] Figure 4 The diagram shown is an internal structural schematic of an integrated photovoltaic-hydrogen storage and utilization energy system of this utility model (without energy storage battery installed).

[0032] Figure 5 The diagram shows the structure of the hydrogen storage tank, hydrogen storage device, hydrogen concentration detection probe, hydrogen concentration detector, and hot and cold circulation device in this utility model.

[0033] Figure 6 The diagram shows the structure of the water storage tank, purification column, and hydrogen production device in this utility model.

[0034] Figure 7The diagram shown is a structural schematic of the pick-and-place port in another embodiment. Detailed Implementation

[0035] Please see Figures 1-7 The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0036] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0037] In this invention, the serial numbers assigned to components, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The term "connection" in this invention, unless otherwise specified, includes both direct and indirect connections. The terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, encompassing not only the listed elements but also other elements not expressly listed.

[0038] The terms "up," "down," "left," "right," "front," and "back" used in this instruction are all based on the attached document. Figure 1 The product's orientation description, specifically, "above" means directly opposite the attached... Figure 1 Above the observer, "below" means directly above the observer. Figure 1 Below the observer, "left" indicates the position directly opposite the subject. Figure 1 To the right of the observer, "right" means directly opposite the observer. Figure 1 "To the left of the observer" and "in front" means directly opposite the observer. Figure 1 Behind the observer, "behind" means directly opposite. Figure 1 The observer is in front of him.

[0039] like Figure 1-4As shown, this utility model provides an integrated photovoltaic-hydrogen storage and utilization energy system, including a water tank 200, a hydrogen production device 300, a hydrogen storage device 400, a hydrogen production power supply 610, a charging controller 510, an energy storage battery 520, and a control motherboard 630. The water tank 200 is externally connected to a pure water system for obtaining external pure water; the hydrogen production device 300 (e.g., a PEM electrolyzer) is connected to the water circuit of the water tank 200 for electrolyzing water to produce hydrogen; the upstream of the hydrogen storage device 400 (e.g., a solid hydrogen storage cylinder) is connected to the gas circuit of the hydrogen production device 300, and the downstream is externally connected to a hydrogen-powered gas appliance for storing hydrogen and releasing hydrogen when the appliance needs it; the input of the hydrogen production power supply 610 is externally connected to a photoelectric conversion system, and the output is electrically connected to the hydrogen production device 300 for converting photoelectric power into constant voltage DC power for the device. The hydrogen production device 300 produces hydrogen through water electrolysis; the input terminal of the charging controller 510 is connected to a photoelectric conversion system, and the output terminal is electrically connected to the input terminal of the energy storage battery 520 (e.g., a lithium battery), used to convert photoelectric power into constant voltage DC power to charge the energy storage battery 520, and to cut off the charging current when the energy storage battery 520 is fully charged to prevent overcharging; the output terminal of the energy storage battery 520 is connected to an external electrical device through an inverter 530; the control motherboard 630 is used to control the power-on and operation of each electrical device in the integrated photohydrogen storage and utilization energy system.

[0040] Under sufficient sunlight, the external photoelectric conversion system converts sunlight into DC power, which is transmitted to the DC / DC converter 620, the hydrogen production power supply 610, and the charging controller 510. The DC / DC converter 620 converts the DC power into 24V DC power to supply internal electrical devices such as water pumps, hot and cold circulation devices, and solenoid valves. The hydrogen production power supply 610 converts the DC power into 22V DC power to supply the hydrogen production device 300 for water electrolysis to produce hydrogen. The produced hydrogen is stored in the hydrogen storage device 400. When the hydrogen storage device is insufficient but hydrogen-powered gas appliances need hydrogen, the hydrogen produced by the hydrogen production device 300 can also be directly supplied to the hydrogen-powered gas appliances. The charging controller 510 converts the DC power into 48V DC power to charge the energy storage battery 520. When external electrical devices need power, the energy storage battery 520 converts the 48V DC power into 220V AC power output through the inverter 530.

[0041] To ensure the system can still supply hydrogen normally even when sunlight is insufficient, a mains power function can be added to the integrated photovoltaic-hydrogen storage and utilization energy system. That is, a first AC / DC power supply 540 is set up in the integrated photovoltaic-hydrogen storage and utilization energy system. Its input terminal is connected to the mains power, and its output terminal is connected to the input terminal of the hydrogen production device 300. It is used to convert the externally input 220V AC power into 22V DC power for the use of the hydrogen production device 300. At the same time, the 22V DC power output from the first AC / DC power supply 540 can be converted into 24V DC power through a DC / DC boost circuit to supply the water pump, hot and cold circulation device, solenoid valve and other internal electrical devices of the system.

[0042] Furthermore, the integrated photovoltaic-hydrogen storage and utilization energy system can also be equipped with a second AC / DC power supply 550, whose input terminal is connected to the mains power and whose output terminal is connected to the input terminal of the energy storage battery 520, for converting the externally input 220V AC power into 48V DC power to charge the energy storage battery 520 for standby.

[0043] Specifically, the water tank 200, hydrogen production device 300, hydrogen storage device 400, hydrogen production power supply 610, charging controller 510, energy storage battery 520, control motherboard 630, first AC / DC power supply 540 and second AC / DC power supply 550 are all installed inside the cabinet 100.

[0044] The cabinet 100 is rectangular or cubic in shape. The front of the cabinet 100 has an operation area for controlling and displaying the system's operating mode, and a water level window 103 for indicating the water level in the water tank 200. The water level window 103 is positioned to match the location of the water tank 200. In this embodiment, the operation area includes a display screen 101 and a button area 102. The display screen 101 can be a non-touchscreen, used only to display information such as the system's operating status and hydrogen flow rate. The button area 102 includes power buttons, hydrogen production buttons, hydrogen delivery buttons, and power supply buttons, and is located below the display screen 101 to control the system to enter different operating modes. This operation area design uses a combination of a non-touchscreen display and mechanical buttons, offering advantages such as low overall cost and low failure rate.

[0045] In other embodiments, the display screen 101 can be a touch screen with multiple built-in function buttons, serving to display information such as the system's operating status and hydrogen flow rate, as well as control the system to enter different operating modes. In this case, the button area 102 is not necessary. From the perspective of cost saving and overall product aesthetics, the button area 102 can be omitted; however, from the perspective of ensuring that the operating system can still run after the display screen 101 experiences a touch failure, the button area 102 can be included.

[0046] To facilitate the retrieval, replacement, and maintenance of the hydrogen storage device 400, the device can be installed on the upper part of the cabinet 100. A retrieval port 104, a square hole, is provided on the upper surface of the cabinet 100, and its position corresponds to the installation position of the hydrogen storage device 400. The retrieval port 104 is covered with an easy-to-open and close upper cover.

[0047] like Figure 7 As shown, in some other embodiments, the access port 104 can also be located on the front of the cabinet 100, and the access port 104 is a plurality of circular holes distributed in a matrix. In this scheme, the hydrogen storage device 400 can be installed in the hydrogen storage chamber 220 equipped with a balanced quick-connect assembly (for details of the specific structure and design, please refer to Chinese Patent Publication No. CN221443649U) by rotational installation.

[0048] Specifically, a liquid collection plate 110 is provided inside the cabinet 100, and a hydrogen storage chamber 120 for installing the hydrogen storage device 400 is provided on the liquid collection plate 110. The hydrogen filling and discharging end (i.e., the bottle opening) of the hydrogen storage device 400 protrudes from the hydrogen storage chamber 120; please refer to Figure 5 The hydrogen storage chamber 120 is equipped with a matching hydrogen concentration detection probe 121 and a hydrogen concentration detector 122. The hydrogen concentration detection probe 121 is located close to the hydrogen charging and discharging end of the hydrogen storage device 400. This design can monitor the hydrogen concentration at the charging and discharging end of the hydrogen storage device 400 in real time. When the hydrogen concentration is too high, the hydrogen concentration detector 122 can issue an alarm to prevent hydrogen leakage.

[0049] To meet the functional requirements of hydrogen storage, as many hydrogen storage devices 400 as possible are usually installed. Therefore, directly installing multiple hydrogen storage devices 400 inside the cabinet 100 requires a lot of force and is difficult. In this invention, the hydrogen storage devices 400 are installed on the upper part of the cabinet 100. Through the design of the access port 104, the liquid collection plate 110 with the hydrogen storage tank 120 can be installed on the upper part of the cabinet 100 first, and then the hydrogen storage devices 400 can be installed from the upper end face of the cabinet 100. This facilitates the installation of the hydrogen storage devices 400, and also facilitates the replacement and maintenance of the hydrogen storage devices 400.

[0050] The water tank 200, hydrogen production device 300, hydrogen production power supply 610, charging controller 510, energy storage battery 520, control main board 630, first AC / DC power supply 540, and second AC / DC power supply 550 are all located below the liquid collection plate 110. The figure only shows the arrangement of the water tank 200, hydrogen production device 300, hydrogen production power supply 610, charging controller 510, energy storage battery 520, control main board 630, first AC / DC power supply 540, and second AC / DC power supply 550 in a specific embodiment; their relative positions are not limited.

[0051] Furthermore, in order to improve the hydrogen storage and release efficiency of the hydrogen storage device 400 and ensure that the temperature is within a reasonable range during the charging and releasing process, the integrated photovoltaic-hydrogen storage and utilization energy system can be equipped with a cooling and heating circulation device 700. The cooling and heating circulation device 700 is installed on the liquid collection plate 110 and specifically includes a compressor 710, a condenser 720, an evaporator, and a heating element. The compressor 710 and the condenser 720 are installed outside the hydrogen storage chamber 120 and arranged on one side close to the hydrogen production power supply 610, the charging controller 510, the energy storage battery 520, the control motherboard 630, the first AC / DC power supply 540, and the second AC / DC power supply 550. The compressor 710 is located between the hydrogen storage chamber 120 and the condenser 720, and the condenser 720 is arranged close to the side of the cabinet 100 to facilitate heat dissipation. The evaporator and heating element are disposed inside the hydrogen storage chamber 120. The evaporator is disposed on the side close to the compressor 710. The heating element may be a resistance wire, wound on a winding frame inside the hydrogen storage chamber 120 and surrounding the hydrogen storage device 400.

[0052] When the hydrogen storage device 400 is storing hydrogen, cooling is initiated. The compressor 710, condenser 720, and evaporator participate in the cooling process, and its cooling principle is similar to that of an air conditioner, which will not be elaborated here. When the hydrogen storage device 400 is releasing hydrogen, heating is initiated. The heating element participates in the heating process. Furthermore, to enhance the heating effect, the fan in the evaporator can also be activated to increase the flow of hot air.

[0053] Since the evaporator generates condensate during operation, and condensate is also generated when cold air comes into contact with the hot hydrogen storage device 400, it is necessary to drain the condensate generated in the hydrogen storage tank 120. Therefore, in this embodiment, a drain hole 123 can be provided on the bottom side of the hydrogen storage tank 120, and a drain pipe 111 can be connected to the liquid collection plate 110; the condensate generated in the hydrogen storage tank 120 is drained through the drain hole 123 to the liquid collection plate 110 for collection, and then discharged from the cabinet 110 through the drain pipe 111.

[0054] Furthermore, a water inlet 106 and a communication interface 107 are provided on one side of the cabinet 100. The water storage tank 200 is connected to an external pure water system through the water inlet 106; the control motherboard 630 is connected to the pure water system through the communication interface 107 (e.g., a KV interface). Please refer to... Figure 6 The water storage tank 200 is equipped with a level gauge 210, which is communicatively connected to the control motherboard 630. The control motherboard 630 is electrically connected to the DC / DC converter 620 to obtain power. When the level gauge 210 detects that the water level in the water storage tank 200 has dropped to the point where water needs to be added, the control motherboard 630 obtains power from the DC / DC converter 620 and transmits it to the communication interface 107, controlling the communication interface 107 to establish a communication connection with the pure water system. Once the connection request is successful, the control motherboard 630 communicates the start-up, operation, and shutdown of the pure water system based on the water level changes detected by the level gauge 210.

[0055] Furthermore, in order to improve the water quality entering the hydrogen production device 300, a purification column 220 can be added between the hydrogen production device 300 and the water storage tank 200, and the purification column 220 is fixed to the bottom of the cabinet 100.

[0056] Furthermore, since excessive water content in hydrogen will affect the hydrogen storage capacity of the hydrogen storage device 400, at least one gas-liquid separator 800 needs to be added between the hydrogen production device 300 and the hydrogen storage device 400 to remove water and purify the hydrogen. The gas-liquid separator 800 is located near the hydrogen production device 300 to reduce the hydrogen flow distance. Specifically, the gas-liquid separator 800 is equipped with a condensation module 810 to cool the hydrogen entering the gas-liquid separator 800, condensing the water vapor in the hydrogen into water, thus making the separation of water vapor and hydrogen more thorough. The drain outlet of the gas-liquid separator 800 is connected to the return water outlet of the water storage tank 200. Furthermore, at least one drying and regeneration device 900 can also be connected to the hydrogen outlet of the gas-liquid separator 800 to further remove water vapor from the hydrogen. The drying and regeneration device 900 contains a molecular sieve, and its outer wall is sequentially covered with an electric heating film and an insulation layer. The drain outlet of the drying and regeneration device 900 is connected to the return water outlet of the water storage tank 200. After a period of time, the electric heating film is energized to heat the drying and regeneration device 900, thereby reducing the molecular sieve inside. The separated water vapor is then returned to the water storage tank 200 under the control of a solenoid valve.

[0057] Specifically, such as Figure 6As shown, in this embodiment, the water storage tank 200 has three return water inlets, all located at the top of the water storage tank 200, corresponding to the drain outlets of the hydrogen production device, the gas-liquid separator 800, and the drying and regeneration device 900, respectively. However, in other embodiments, the water storage tank 200 may have only one return water inlet, and the return water from the hydrogen production device, the gas-liquid separator 800, and the drying and regeneration device 900 may flow back to the water storage tank 200 via three converging pipes into one pipe.

[0058] Furthermore, to ensure hydrogen safety when the hydrogen storage device 400 is connected to an external hydrogen-powered gas appliance, the integrated photovoltaic-hydrogen storage and utilization energy system is also equipped with a hydrogen output management device. One end of the device is connected to the gas path of the hydrogen storage device 400, and the other end is connected to the hydrogen-powered gas appliance via a flow meter. The cabinet 100 is equipped with a hydrogen output port 108 connecting the hydrogen output management device and the hydrogen-powered gas appliance. The main function of the hydrogen output management device is to precisely control the rate and pressure of hydrogen release from the hydrogen storage device 400, ensuring a continuous and stable supply of hydrogen. When the hydrogen output management device receives a hydrogen demand signal from the hydrogen-powered gas appliance, it controls the hydrogen storage device 400 to release hydrogen.

[0059] Furthermore, to improve the overall heat dissipation capacity of the integrated photovoltaic-hydrogen storage and utilization energy system and ensure the safe operation of the equipment, fans can be installed on or near the main heat-generating devices such as the hydrogen production unit 300, the gas-liquid separator 800, the drying and regeneration unit 900, and the condenser 720 to promote heat dissipation. Simultaneously, multiple heat dissipation vents can be opened on the left and right sides and the back of the cabinet 100 to facilitate heat exhaust.

[0060] Furthermore, the cabinet 100 is provided with handles 105 on its left and right sides for easy lifting. The lower end of the cabinet 100 is provided with wheels 109 for easy horizontal movement, and the wheels 109 may be omnidirectional wheels with braking function.

[0061] In summary, this utility model simultaneously possesses three functions: hydrogen production, hydrogen transmission, and power supply. The hydrogen production process is as follows: S11, the hydrogen production button on the cabinet 100 is activated, and the control motherboard 630 initiates the hydrogen production mode; S12, pure water is injected into the water storage tank 200. When the water level in the water storage tank 200 reaches the safe level, the hydrogen production device 300 obtains pure water from the water storage tank 200 and performs electrolysis to produce hydrogen. The produced oxygen is discharged, while the undecomposed pure water flows back to the water storage tank 200 via a solenoid valve. S13. The gas-water separation device 800 obtains hydrogen from the hydrogen production device 300 and performs gas-water separation to obtain high-purity hydrogen. The separated water flows back to the water storage tank 200 through a solenoid valve. S14. The hydrogen obtained by the gas-water separation device 800 is purified again by the drying and regeneration device 900. The separated water flows back to the water storage tank 200 through a solenoid valve. S15. The hydrogen storage device 400 obtains high-purity hydrogen from the drying and regeneration device 900 through a solenoid valve and automatically stores the high-purity hydrogen.

[0062] The hydrogen supply process is as follows: S21, the hydrogen supply button on the cabinet 100 is activated, and the control motherboard 630 starts the hydrogen supply mode; S22, the hydrogen output management device outputs the hydrogen stored in the hydrogen storage device 400 according to the needs of the external hydrogen energy gas appliance, and the output hydrogen is output to the hydrogen energy gas appliance after passing through the flow meter.

[0063] The power supply process is as follows: S31, the power supply button on the cabinet 100 is activated, and the control motherboard 630 starts the power supply mode; S32, the energy storage battery 520 supplies power to external electrical equipment.

[0064] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A light hydrogen storage integrated energy system, comprising a water storage tank, externally connected to a pure water system; a hydrogen production device, connected to the water storage tank in waterway; a hydrogen storage device, upstream connected to the hydrogen production device in gasway, and downstream externally connected to a hydrogen energy gas appliance; characterized in that further comprising a hydrogen production power supply, input externally connected to a photoelectric conversion system, and output electrically connected to the hydrogen production device; a charging controller, input externally connected to a photoelectric conversion system; an energy storage battery, input electrically connected to the output of the charging controller, and output externally connected to an electrical equipment through an inverter; and a control mainboard for signal control of power-on and operation of each electrical device in the light hydrogen storage integrated energy system.

2. The integrated energy system for optical hydrogen storage according to claim 1, wherein Further comprising a first AC / DC power supply, input externally connected to a commercial power supply, and output connected to the input of the hydrogen production device.

3. The integrated energy system for optical hydrogen storage according to claim 1, wherein Further comprising a second AC / DC power supply, input externally connected to a commercial power supply, and output connected to the input of the energy storage battery.

4. The integrated energy system for optical hydrogen storage according to any one of claims 1 to 3, characterized by The hydrogen storage device is installed on the upper part of the cabinet, and a taking and placing opening is formed on the upper end face or the front face of the cabinet, which is a square hole or a plurality of round holes.

5. The integrated energy system for optical hydrogen storage according to claim 4, wherein The hydrogen storage device is arranged in a hydrogen storage bin, and the hydrogen charging and discharging end of the hydrogen storage device is exposed outside the hydrogen storage bin; a matching hydrogen concentration detection probe and a hydrogen concentration detector are arranged on the hydrogen storage bin, and the hydrogen concentration detection probe is arranged close to the hydrogen charging and discharging end of the hydrogen storage device.

6. The integrated energy system for optical hydrogen storage according to claim 5, wherein The hydrogen storage bin is installed on the upper part of the cabinet through a liquid collecting plate, a drain hole is formed on the side bottom of the hydrogen storage bin, and a drain pipeline is connected to the liquid collecting plate; the condensed water generated in the hydrogen storage bin is discharged to the liquid collecting plate through the drain hole, and then discharged out of the cabinet through the drain pipeline.

7. The integrated energy system for optical hydrogen storage according to claim 6, wherein A cold and hot cycle device is further arranged on the liquid collecting plate, which comprises a compressor, a condenser, an evaporator and a heating element; the compressor and the condenser are installed outside the hydrogen storage bin, and the compressor is located between the hydrogen storage bin and the condenser; the evaporator and the heating element are installed in the hydrogen storage bin, the evaporator is arranged on one side close to the compressor, and the heating element is arranged around the periphery of the hydrogen storage device.

8. The integrated energy system for optical hydrogen storage according to claim 4, wherein The water storage tank is arranged below the hydrogen storage device, a communication interface is arranged on one side face of the cabinet, the control mainboard is in communication connection with the pure water system through the communication interface; a liquid level meter in communication connection with the control mainboard is arranged in the water storage tank, and the control mainboard communicates with the pure water system to start, operate or stop according to the water level detected by the liquid level meter.

9. The integrated energy system for optical hydrogen storage according to any one of claims 1 to 3, characterized by, At least one gas-water separation device is arranged between the hydrogen production device and the hydrogen storage device, a condensation module is arranged in the gas-water separation device, which is used for cooling the hydrogen gas entering the gas-water separation device to condense the water vapor in the hydrogen gas into water; and a drain port of the gas-water separation device is in liquid connection with a backwater port of the water storage tank.

10. The integrated energy system for optical hydrogen storage according to claim 9, wherein At least one drying and regeneration device is connected to the hydrogen gas outlet of the gas-water separation device, the drying and regeneration device is internally provided with molecular sieve, and the drying and regeneration device is externally covered with an electrothermal film and a heat preservation layer in sequence; and a drain port of the drying and regeneration device is in liquid connection with the backwater port of the water storage tank.

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