Greenhouse hydrogen storage agriculture and light complementation system

Abstract

The invention provides a greenhouse hydrogen storage agriculture and light complementation system which comprises normal-pressure hydrogen bags and photovoltaic cell panels which are arranged inside and outside agricultural greenhouses, the multiple agricultural greenhouses are separated by a certain safe distance and are grouped in the same field, and the normal-pressure hydrogen bags are communicated with hydrogen production equipment through hydrogen pipelines; electric energy generated by the photovoltaic cell panel is supplied to the hydrogen production equipment, and hydrogen is injected into the normal-pressure hydrogen bag through the hydrogen pipeline and stored. According to the invention, the investment of energy storage equipment and the energy storage cost per kilowatt-hour of the whole life cycle are reduced through the comprehensive application of agriculture, light and energy storage, and the market application value of the agriculture and light complementary system is greatly excavated.

Description

Technical Field

[0001] The present application belongs to the field of agricultural-photovoltaic complementary technology, and specifically relates to a greenhouse hydrogen storage agricultural-photovoltaic complementary system. Background Art

[0002] As a clean energy technology, the cost of photovoltaic power generation has dropped significantly in recent years. It is reported that the cost of some photovoltaic power stations has dropped to RMB 0.10 per kilowatt-hour over their entire life cycle. Although the cost of photovoltaic power generation is already very low, the cost of energy storage remains high, which has become the main obstacle to large-scale replacement of traditional thermal power.

[0003] The development of energy storage technology has undergone decades of evolution, and now it has formed a variety of forms including battery energy storage, pumped energy storage, compressed air energy storage, flywheel energy storage, hydrogen energy storage, etc. Battery energy storage has a high energy conversion efficiency (usually between 85% and 95%). At present, the most mature electrochemical energy storage technology is lithium iron phosphate battery technology, but its cost is still high. The latest report shows that the full life cycle cost is RMB 0.62 / kWh. Pumped energy storage technology is mature and has high economic efficiency. It can provide large-scale and long-term energy storage solutions and is suitable for peak and frequency regulation of power systems. The latest report shows that it is RMB 0.21 / kWh, but its initial construction investment is large, the site selection requirements are high, and its applicability is limited. Compressed air energy storage has the potential for large-scale and long-term energy storage, but the energy conversion efficiency is relatively low (between 40% and 70%), the system is complex and depends on geological conditions. Flywheel energy storage is known for its high power density, long life and fast response, and is suitable for short-term energy storage and high frequency regulation. However, its low energy density and high manufacturing cost limit its application in large-scale energy storage. Hydrogen production by water electrolysis and hydrogen energy storage can achieve ultra-long-term energy storage, which is particularly suitable for combination with renewable energy. However, its energy conversion efficiency is low (less than 50%), the cost of hydrogen production is high, and hydrogen storage and transportation face challenges. High-pressure gaseous hydrogen storage technology is currently the most mature and most commonly used hydrogen storage method. However, in the process of compressing hydrogen, about 15% of electrical energy or mechanical energy is consumed, which has high energy consumption and high cost. Because of its large size, large footprint, and uneconomical and practical nature, atmospheric pressure gaseous hydrogen storage has not been reported or used.

[0004] In-depth analysis and research show that high-pressure gaseous hydrogen storage technology faces problems in practical applications, such as high energy consumption in the compression process, large investment in high-pressure hydrogen storage tank equipment, large amount of land resources required, and high maintenance costs. Summary of the invention

[0005] The purpose of this application is to provide a greenhouse hydrogen storage and agricultural photovoltaic complementary system, which reduces the energy storage and electricity cost over the entire life cycle through the comprehensive application of agricultural photovoltaic storage technology, and opens up a new low-cost technical path for photovoltaic power generation to replace thermal power.

[0006] In order to achieve the above-mentioned purpose of the invention, the present application provides a greenhouse hydrogen storage and agricultural photovoltaic complementary system as follows.

[0007] The present application provides a greenhouse hydrogen storage and agricultural photovoltaic complementary system, including an agricultural greenhouse structure and a photovoltaic panel assembly integrated thereon, characterized in that: ① Photovoltaic panels are installed on the top area of ​​the agricultural greenhouse (including the upper side) to capture solar energy; ② Inside the agricultural greenhouse, at least one atmospheric pressure hydrogen bag is provided for storing hydrogen. The reason why retractable containers such as atmospheric pressure hydrogen bags are used to store hydrogen instead of rigid containers is that retractable containers can adjust gas storage and discharge, which is energy-saving, easy to empty, and cheap. The reason why atmospheric pressure hydrogen storage is used instead of high-pressure hydrogen storage is that atmospheric pressure hydrogen storage is energy-saving and cheap. Its only disadvantage is that it occupies a large area. However, the idle space and land under the photovoltaic panels are cleverly shared here, overcoming the disadvantages of atmospheric pressure hydrogen storage occupying a large area and no land available. ③ A certain safety distance L is opened between adjacent agricultural greenhouses, and n agricultural greenhouses are grouped (i.e. collectively installed) on the same piece of land, where n≥3 (preferably n≥22) and L≥1.15 meters (preferably L≥3 meters) to ensure safe and efficient use of land resources; the safety height of the atmospheric pressure hydrogen bag is 0.25-8.25 meters, the safety width is greater than 34% of the width of the agricultural greenhouse, and the safety length is 3-55 meters; research shows that the safety distance L is preferably 1.15m-6.18m, and 1.5m-3m is even better. This distance can not only make efficient use of land and avoid wasting resources, but also ensure safety. Even if a certain atmospheric pressure hydrogen bag explodes accidentally, it will not affect the adjacent agricultural greenhouses; ④ The atmospheric pressure hydrogen bag is connected to the hydrogen production equipment through a hydrogen pipeline to achieve the preparation and transportation of hydrogen; ⑤ (When there is sufficient sunlight or surplus electricity,) the electricity generated by the photovoltaic panels is supplied to the hydrogen production equipment, and the generated hydrogen is injected into the normal pressure hydrogen bag through the hydrogen pipeline and stored at normal pressure.

[0008] Preferably, the greenhouse hydrogen storage and agricultural-photovoltaic complementary system is characterized in that the ratio coefficient K between the volume of the atmospheric pressure hydrogen bag and the internal volume of the corresponding agricultural greenhouse is limited to no more than 1, and the specific optional value is K≤0.9 or 0.7 or 0.5, so as to ensure that there is sufficient farming space required for crop growth. In other words, it is best to reserve 90% or 70% or less than 50% of the volume space in the agricultural greenhouse for farming or as a management and maintenance channel. According to the average efficiency of existing photovoltaic panels of 25%, calculated according to the local peak sunshine hours, each square meter of photovoltaic panels can generate a maximum of 1.5 kWh of electricity per day. According to the existing technical level of hydrogen production by electrolysis of water, 1.5 kWh can produce 0.5 standard cubic meters of hydrogen. In other words, one square meter of photovoltaic panels can only produce half a standard cubic meter of hydrogen with the electricity generated in one day. Based on this calculation, the length × width of a single agricultural greenhouse is used to design and manufacture normal-pressure hydrogen bags. The height of the normal-pressure hydrogen bags is 0.25-8.25 meters, the width is greater than 34% of the width of the agricultural greenhouse, and the length is 3-55 meters. It is able to store the hydrogen produced for 1-15 days. This size just meets the needs of long-term energy storage and power generation, and can also leave sufficient farming space for the growth of crops.

[0009] Preferably, the greenhouse hydrogen storage and agricultural photovoltaic complementary system is characterized in that the design working pressure of the normal pressure hydrogen bag does not exceed 0.28MPa to ensure safe operation. Studies have shown that when the air pressure in the bag is higher than 0.28MPa, the cost of the bag will increase significantly, the energy consumption of compressed hydrogen will also increase significantly, and it is easy to cause bursting and leakage. This application regards the safe working pressure of less than 0.28MPa that is not easy to cause bursting as normal pressure. That is, the normal pressure described in this application includes low pressure with a pressure of ≤0.28MPa.

[0010] Preferably, the greenhouse hydrogen storage and agricultural-photovoltaic complementary system is characterized in that: the transmittance of the photovoltaic panel is ≥10%, the normal-pressure hydrogen bag is made of transparent material and is installed at a height of at least 1.65 meters from the ground, and ensures that natural light can effectively penetrate the photovoltaic panel and the normal-pressure hydrogen bag to irradiate the crops in the greenhouse to promote photosynthesis.

[0011] Preferably, the greenhouse hydrogen storage and agricultural-photovoltaic complementary system is characterized in that: the hydrogen pipeline is connected to a hydrogen fuel cell system for generating electricity when there is no sunlight to achieve continuous and stable power supply to the power grid or electrical equipment; or, the hydrogen pipeline is connected to a hydrogen combustion power generation device for replacing fossil fuel power generation; or, the hydrogen pipeline is connected to a hydrogen combustion hot air furnace to use the heat energy generated by hydrogen combustion to heat the interior of the agricultural greenhouse to adjust the temperature inside the greenhouse and promote crop growth.

[0012] Preferably, the greenhouse hydrogen storage and agricultural photovoltaic complementary system is characterized by: the safety height of the atmospheric pressure hydrogen bag is 0.25-8.25 meters, the safety width is greater than 34% of the width of the agricultural greenhouse, and the safety length is 3-55 meters. This safety size can not only efficiently utilize land and avoid wasting resources, but also ensure safety. Even if a atmospheric pressure hydrogen bag accidentally explodes, it will not harm the adjacent agricultural greenhouse.

[0013] Preferably, the greenhouse hydrogen storage and agricultural-photovoltaic complementary system is characterized in that less than 50% (including 0%) of the volume space is reserved in the agricultural greenhouse for farming (including idle farming) or as a management and maintenance channel.

[0014] Compared with the prior art, the present application has the following beneficial technical effects.

[0015] First, agricultural greenhouses have the functions of existing ground-based photovoltaic brackets. Photovoltaic panels can provide protection from wind and rain and prevent normal-pressure hydrogen bags from being exposed to the sun / breakdown, achieving dual uses and complementary functions, reducing the overall cost of photovoltaic power generation and hydrogen energy storage, promoting agricultural production, and enhancing the value of the agricultural-photovoltaic complementary system.

[0016] Second, multifunctional devices are organically integrated to share land resources. The land and space under the photovoltaic panels of the existing centralized ground power stations, as well as the open space near the photovoltaic panels, are idle. This application organically integrates agricultural greenhouses, photovoltaic panels, photovoltaic brackets, facility pile foundations, atmospheric pressure hydrogen bags, hydrogen combustion hot air furnaces and other multifunctional devices, which can bring about comprehensive benefits and transform the existing single-function centralized ground power stations into a multifunctional greenhouse hydrogen storage and agricultural photovoltaic complementary system, sharing land resources and apportioning land rents without the need for each to occupy land resources.

[0017] Third, it is safe and has no hidden dangers. The atmospheric pressure hydrogen bag can be installed in the wilderness, desert, and Gobi, far away from human habitation, just like the current centralized photovoltaic cell assembly array. Even if an accidental explosion occurs, it will not endanger people. Moreover, there is a certain safety distance L between adjacent atmospheric pressure hydrogen bags. Even if a atmospheric pressure hydrogen bag leaks hydrogen, the hydrogen will quickly diffuse into the air and will not cause a chain explosion.

[0018] Fourth, the energy storage cost per kilowatt-hour over the entire life cycle is expected to be greatly reduced, especially with the continuous development of hydrogen fuel cell technology and the large-scale mass production of electrolyzers, the energy storage cost is expected to be further reduced.

[0019] Fifth, to replace biogas, for rural users, distributed agricultural greenhouses can be built so that farmers can obtain photovoltaic electricity while also introducing the hydrogen in normal pressure hydrogen bags into the kitchen and use it for making fire and cooking like using biogas.

[0020] Sixth, compared with high-pressure gaseous hydrogen storage, the energy conversion efficiency is greatly improved. High-pressure gaseous hydrogen storage consumes 10-15% of electrical energy in the process of compressing hydrogen, while this application is atmospheric pressure hydrogen storage, which does not require hydrogen compression, thus saving 10-15% of energy consumption and increasing energy conversion efficiency by 10-15%, thereby increasing the energy conversion efficiency of the current water electrolysis hydrogen production technology from 50% to 65%. This efficiency improvement greatly reduces the photovoltaic power generation energy storage cost per kilowatt-hour throughout the life cycle, and the economic value is very considerable.

[0021] Seventh, atmospheric pressure hydrogen storage, container costs are greatly reduced. The cost of high-pressure hydrogen storage tanks accounts for an important proportion of the total cost of high-pressure gaseous hydrogen storage power generation technology. According to publicly released information, the cost of carbon fiber composite materials accounts for 75%-78% of the total cost of Type IV hydrogen storage bottle systems. This shows that the cost of carbon fiber composite materials accounts for the vast majority of the total cost of Type IV hydrogen storage tanks. It can be seen that the cost of high-pressure hydrogen storage tanks (including materials, manufacturing, testing and certification costs, etc.) accounts for a considerable proportion of the total cost of high-pressure gaseous hydrogen storage power generation technology, and is the most important part of the total cost. The atmospheric pressure hydrogen bags in this application are low-cost, highly safe, and not easy to leak.

[0022] Eighth, greenhouse hydrogen storage in the desert, a win-win situation for agriculture, photovoltaics and storage. Building a greenhouse hydrogen storage and agricultural photovoltaic complementary system in the desert can achieve a win-win situation for agriculture, photovoltaics and storage, and can transform the desert into a greenhouse oasis. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the appearance and structure of an agricultural greenhouse used in this application (Example 1).

[0024] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of a Chinese agricultural greenhouse.

[0025] Figure 3 for Figure 1 Schematic diagram of another cross-sectional structure of a Chinese agricultural greenhouse.

[0026] Figure 4 for Figure 1 Another cross-sectional structural diagram of a Chinese agricultural greenhouse.

[0027] Figure 5 This is a schematic diagram of the appearance and structure of a normal-pressure hydrogen bag used in this application (Example 1).

[0028] Figure 6 This is a schematic diagram of the appearance structure of another retractable atmospheric pressure hydrogen bag used in the present application (Example 1).

[0029] Figure 7This is a structural schematic diagram of a greenhouse hydrogen storage and agricultural photovoltaic complementary system of the present application (Example 1).

[0030] Figure 8 This is a schematic diagram of the partial structure of a greenhouse hydrogen storage and agricultural photovoltaic complementary system in the present application (Example 2).

[0031] Fig. 9 This is a structural schematic diagram of a greenhouse hydrogen storage and agricultural photovoltaic complementary system of the present application (Example 2).

[0032] Fig.10 Schematic diagram of the current centralized photovoltaic cell array that is located in deserts and Gobi far away from human habitation.

[0033] Fig.11 This is a schematic diagram of the appearance and structure of a high-legged agricultural greenhouse used in this application (Example 3).

[0034] Explanation of the accompanying numbers: 1-photovoltaic panels, 2-normal pressure hydrogen bags, 3-hydrogen pipelines, 4-water electrolysis hydrogen generators, 5-hydrogen fuel cells, 6-crops, 7-hydrogen, 8-land, 9-sun, 10-light, 11-hydrogen sensors, 12-agricultural greenhouses, 13-hydrogen-fired hot air furnaces, 14-air inlets and outlets, 15-cultivation space, 16-photovoltaic power lines, 17-power grids, 18-livestock. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by this application easy to understand, this application is further explained below in conjunction with specific implementation methods.

[0036] In the description of the present application, it should be noted that the terms "upper", "lower", "inside", "inner", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0037] It should be noted that, unless otherwise clearly specified and limited, the terms "installation", "group living", "placement", "connection", etc. should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] Embodiment 1.

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Fig. 9As shown, the top area (including the upper side and the side wall) of the agricultural greenhouse 12 is covered with photovoltaic panels 1 (flexible photovoltaic panels or photovoltaic glass panels or crystalline silicon photovoltaic panels or photovoltaic modules such as perovskite thin film batteries can be used) to capture the energy of the sun 9. Inside the agricultural greenhouse 12, at least one atmospheric pressure hydrogen bag 2 (a retractable container similar to a biogas bag can be used) is provided for storing hydrogen 7; the atmospheric pressure hydrogen bag 2 described in this application generally refers to a retractable container, such as a retractable container such as a biogas bag; the agricultural greenhouse 12 described in this application covers all kinds of facilities equipped with a top covering structure and a surrounding enclosure structure (including but not limited to walls, fences, shields, protective nets, tents, etc.). A certain safety distance L is opened between adjacent agricultural greenhouses 12, and thousands of agricultural greenhouses 12 (n≥22 is best) are grouped (i.e. collectively installed) on the same piece of land 8, where the safety distance L is 1.15m-6.18m, preferably 3m-5m. In this way, the land 8 can be efficiently utilized to avoid the waste of land resources, and safety can be ensured. Even if a normal-pressure hydrogen bag 2 accidentally explodes, it will not affect the adjacent agricultural greenhouse 12. The normal-pressure hydrogen bag 2 is connected to the hydrogen production equipment such as the water electrolysis hydrogen production machine 4 through the hydrogen pipeline 3 to achieve the preparation and transportation of hydrogen 7. When there is sufficient sunlight 9 or surplus electricity, the electricity generated by the photovoltaic panel 1 is supplied to the hydrogen production equipment through the photovoltaic wire 16, and the generated hydrogen 7 is injected into the normal-pressure hydrogen bag 2 through the hydrogen pipeline 3 and stored at normal pressure.

[0040] Preferably, at least n≥22 agricultural greenhouses 12 are collectively installed in the same piece of land 8. Studies have shown that more than 22 agricultural greenhouses 12 have the highest cost-effectiveness.

[0041] Preferably, the ratio coefficient K between the volume of the atmospheric pressure hydrogen bag 2 and the internal volume of the corresponding agricultural greenhouse 12 is limited to not more than 1, and the specific optional value is ≤0.9 or 0.7 or 0.5, so as to ensure that the cultivation space required for the growth of crops 6 is sufficient. According to the average efficiency of the existing photovoltaic panels 1 of 25%, according to the local peak sunshine hours, each square meter of photovoltaic panels 1 can generate a maximum of 1.5 kWh of electricity per day. According to the existing technical level of hydrogen production by electrolysis of water, 1.5 kWh of electricity can produce 0.5 standard cubic meters of hydrogen 7. One square meter of photovoltaic panels 1 can only produce half a standard cubic meter of hydrogen 7 in one day. Based on this calculation, the normal-pressure hydrogen bag 2 is designed and manufactured with a length × width similar to that of a single agricultural greenhouse 12. The normal-pressure hydrogen bag 2 has a height of 0.25-8.25 meters, a width greater than 34% of the width of the agricultural greenhouse 12, and a length of 3-55 meters. It can store the hydrogen 7 produced for 1-15 days. This size just meets the needs of long-term energy storage for power generation, and can also leave sufficient space for the growth of crops 6.

[0042] Preferably, the design working pressure of the atmospheric pressure hydrogen bag 2 does not exceed 0.28MPa to ensure safe operation. Studies have shown that when the air pressure in the bag is higher than 0.28MPa, the cost of the bag (for example, using a retractable container such as an inflatable rubber dam as the atmospheric pressure hydrogen bag 2) will increase significantly, the energy consumption of the compressed hydrogen 7 will also increase significantly, and it is easy to cause bursting and leakage. This application regards the safe working pressure of less than 0.28MPa that is not easy to cause bursting and leakage as normal pressure. That is, the normal pressure described in this application includes a low pressure of ≤0.28MPa.

[0043] Preferably, the transmittance of the photovoltaic panel 1 is ≥10% (for example, 40%), the atmospheric pressure hydrogen bag 2 is made of transparent material and installed at a height H of at least 1.65 meters from the ground, and ensure that the light 10 of the sun 9 can effectively penetrate the photovoltaic panel 1 and the atmospheric pressure hydrogen bag 2 and irradiate the crops 6 in the agricultural greenhouse 12 to promote photosynthesis.

[0044] Preferably, the hydrogen pipeline 3 is connected to a hydrogen fuel cell 5 system for generating electricity when there is no sunlight to achieve continuous and stable power supply to the power grid or electrical equipment; or, the hydrogen pipeline 3 is connected to an existing hydrogen combustion power generation device for generating electricity instead of fossil fuels (such as coal, natural gas, diesel); or, the hydrogen pipeline 3 is connected to a hydrogen combustion hot air furnace 13, and the heat energy generated by the combustion of hydrogen 7 is used to heat the interior of the agricultural greenhouse 12 to adjust the temperature environment and promote the growth of crops 6.

[0045] Preferably, a hydrogen sensor 11 is installed in the space between the agricultural greenhouse 12 and the atmospheric pressure hydrogen bag 2 to monitor in real time whether the atmospheric pressure hydrogen bag 2 is leaking.

[0046] Preferably, if Figure 2 As shown, the atmospheric pressure hydrogen bag 2 is made of transparent material and installed at a height H of 0-3.3 meters from the ground, and ensures that the light 10 of the sun 9 can effectively penetrate the photovoltaic panel 1 and the atmospheric pressure hydrogen bag 2, and irradiate the crops 6 in the cultivation space 15 below the atmospheric pressure hydrogen bag 2 to promote photosynthesis. It is preferred to set the height H of the atmospheric pressure hydrogen bag 2 from the ground to a movable structure that can be raised and lowered so that the height H of the atmospheric pressure hydrogen bag 2 can be artificially lowered when the off-season arrives, thereby expanding the gas storage capacity of the atmospheric pressure hydrogen bag 2, increasing the power generation, and reducing the planting area. Of course, the height H of the atmospheric pressure hydrogen bag 2 from the ground can also be increased so that cattle and sheep can graze or rest below it.

[0047] Preferably, if Figure 4 As shown, the atmospheric pressure hydrogen bag 2 is placed on one side of the agricultural greenhouse 12, leaving the other side space 15 for planting crops 6. In this way, the size and gas storage capacity of the atmospheric pressure hydrogen bag 2 can be adjusted according to the needs of power generation and planting, thereby increasing or decreasing the power generation and adjusting the power generation and agricultural output ratio.

[0048] Embodiment 2.

[0049] like Figure 8 As shown, photovoltaic panels 1 with the best light inclination angle close to the local latitude are placed on the upper side of each agricultural greenhouse 12 to ensure that the photovoltaic panels 1 can block the sunlight for most of the day, so that the agricultural greenhouse 12 is not exposed to the sun, thereby increasing the power generation. Then, referring to the above example, the layout of the greenhouse hydrogen storage and agricultural photovoltaic complementary system is completed.

[0050] Embodiment three.

[0051] like Fig.11 As shown, photovoltaic panels 1 are laid on the upper side of each high-legged agricultural greenhouse 12 to capture the energy of the sun 9. Then, referring to the above example, the layout of the greenhouse hydrogen storage and agricultural photovoltaic complementary system is completed on a large piece of land 8. In this way, livestock 11 such as cattle, sheep, and chickens can graze under the high-legged agricultural greenhouse 12.

[0052] What is disclosed above is only a preferred embodiment of the present application. The drawings are merely schematic structural diagrams and are not drawn according to the actual size ratio. They cannot be used to limit the scope of rights of the present application. Equivalent changes made based on the claims of the present application still fall within the scope covered by the present application.

Claims

1. A greenhouse hydrogen storage and agricultural photovoltaic complementary system, comprising an agricultural greenhouse structure and a photovoltaic panel assembly integrated thereon, characterized in that: ① Photovoltaic panels are installed on the top area of ​​the agricultural greenhouse to capture solar energy; ② Inside the agricultural greenhouse, at least one normal pressure hydrogen bag is provided for storing hydrogen; ③ A certain safety distance L is kept between adjacent agricultural greenhouses, and n agricultural greenhouses are clustered in the same piece of land, where n ≥ 3 and L ≥ 1.15 meters, to ensure the safe and efficient use of land resources; the safety height of the atmospheric pressure hydrogen bag is 0.25-8.25 meters, the safety width is greater than 34% of the width of the agricultural greenhouse, and the safety length is 3-55 meters; ④ The atmospheric pressure hydrogen bag is connected to the hydrogen production equipment through a hydrogen pipeline to achieve the preparation and transportation of hydrogen; ⑤ The electricity generated by the photovoltaic panels is supplied to the hydrogen production equipment, and the generated hydrogen is injected into the normal pressure hydrogen bag through the hydrogen pipeline and stored at normal pressure.

2. The greenhouse hydrogen storage and agricultural photovoltaic complementary system according to claim 1 is characterized by: The proportional coefficient K between the volume of the atmospheric pressure hydrogen bag and the internal volume of the corresponding agricultural greenhouse is limited to no more than 1, and the specific optional value is K≤0.

9.

3. The greenhouse hydrogen storage and agricultural photovoltaic complementary system according to claim 1 is characterized by: The design working pressure of atmospheric pressure hydrogen bags does not exceed 0.28MPa to ensure safe operation.

4. The greenhouse hydrogen storage and agricultural photovoltaic complementary system according to claim 1 is characterized by: The transmittance of photovoltaic panels is ≥10%. The atmospheric pressure hydrogen bags are made of transparent materials and installed at a height of at least 1.65 meters from the ground. It ensures that natural light can effectively penetrate the photovoltaic panels and atmospheric pressure hydrogen bags and shine on the crops in the greenhouse to promote photosynthesis.

5. The greenhouse hydrogen storage and agricultural photovoltaic complementary system according to claim 1, 2, 3 or 4, characterized in that: The hydrogen pipeline is connected to the hydrogen fuel cell system, which is used to generate electricity when there is no sunlight, so as to achieve continuous and stable power supply to the power grid or power-consuming equipment; Alternatively, the hydrogen pipeline is connected to a hydrogen combustion power generation device to replace fossil fuels for power generation; Alternatively, the hydrogen pipeline is connected to a hydrogen combustion hot air furnace, and the heat energy generated by the hydrogen combustion is used to heat the inside of the agricultural greenhouse to adjust the temperature inside the greenhouse and promote crop growth.

6. The greenhouse hydrogen storage and agricultural photovoltaic complementary system according to claim 2 is characterized by: Less than 50% of the volume space in an agricultural greenhouse is reserved for farming or as a management and maintenance passage.

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