Solid hydrogen storage and transportation system based on solid hydrogen storage alloy

Abstract

The invention discloses a solid hydrogen storage and transportation system based on a solid hydrogen storage alloy. The solid hydrogen storage and transportation system comprises a hydrogen storage unit, a peripheral hydrogen pipeline, a heating medium circulating system and a control system, the hydrogen storage unit comprises a heating medium buffer tank provided with a hydrogen storage tank body, hydrogen storage alloy is loaded in the hydrogen storage tank body, and the hydrogen storage tank body is detachably connected with an external hydrogen source or hydrogen using equipment through a peripheral hydrogen pipeline; the heating medium circulating system comprises a heating medium storage box connected with the heating device, the heating medium storage box is connected with a heating medium buffer box through a heating medium circulating pump, the heating medium storage box is connected with a cooler and the heating medium buffer box through a three-way valve, and the cooler is connected with the heating medium buffer box and the heating medium circulating pump and detachably connected with the heating medium buffer box; the control system is used for achieving dynamic adjustment of the heating medium circulating pump, the heating device and the cooler. The hydrogen storage device has the advantages in the aspects of safety, volume hydrogen storage density and mass hydrogen storage density, higher hydrogen storage density can be realized with lower hydrogen storage pressure, and the hydrogen storage device is convenient to transport and can be recycled.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen fuel cell hydrogen refueling, and particularly to a solid hydrogen storage and transportation system based on a solid hydrogen storage alloy. Background Art

[0002] As a highly efficient energy source that is environmentally friendly and pollution-free from production to use, hydrogen energy is considered the future development direction of clean energy. At present, the technologies in the hydrogen production and use links have matured, and the hydrogen storage link remains the key point that needs to be broken through.

[0003] The current mainstream industrial hydrogen storage and transportation technology is high-pressure gaseous storage and transportation, and its core carrier is a long tube trailer. This technology has the significant advantages of convenient hydrogen charging and discharging processes and high engineering application maturity. The total mass of a typical transportation unit is about 40 tons, and the hydrogen storage pressure can reach 20 MPa, but the single carrying capacity is only 200 - 400 kg. In the hydrogen charging link, low-pressure hydrogen needs to be pressurized to more than 20 MPa through multi-stage compression. This process not only relies on high-cost special compression devices but also has significant energy consumption problems. In addition, due to the strong permeability of hydrogen molecules and low critical detonation energy of the high-pressure hydrogen storage system, there are risks of leakage and combustion explosion, and strict safety protection measures need to be implemented in aspects such as equipment sealing, pipeline explosion protection design, and transportation monitoring.

[0004] Compared with traditional high-pressure gaseous hydrogen storage and cryogenic liquid hydrogen storage, the metal hydride hydrogen storage has higher volumetric hydrogen storage density and mass hydrogen storage density. At the same time, it can realize storage and release at normal temperature and pressure, reducing the energy consumption brought by low temperature and pressurization, and is convenient for transportation and can also be recycled. It is considered the most promising hydrogen storage technology. Summary of the Invention

[0005] The present invention aims to solve the technical problems existing in the prior art and provides a solid hydrogen storage and transportation system based on a solid hydrogen storage alloy. Compared with the traditional long tube trailer, it has advantages in terms of safety, volumetric hydrogen storage density, and mass hydrogen storage density. It can achieve a higher hydrogen storage density at a lower hydrogen storage pressure, is convenient for transportation, and can be recycled.

[0006] The technical solution of the present invention is: a solid hydrogen storage and transportation system based on a solid hydrogen storage alloy, including a hydrogen storage unit, a peripheral hydrogen pipeline, a heat medium circulation system, and a control system;

[0007] The hydrogen storage unit includes a heat medium buffer tank and a plurality of hydrogen storage tanks arranged in the heat medium buffer tank, and the hydrogen storage alloy is loaded inside the hydrogen storage tanks;

[0008] The peripheral hydrogen pipeline includes a hydrogen pipeline. Each hydrogen storage tank is connected to an external hydrogen source or a hydrogen-consuming device through the hydrogen pipeline. A hydrogen filter, a hydrogen isolation valve, a hydrogen quick connector, a flowmeter, and a hydrogen pressure regulator are sequentially arranged on the hydrogen pipeline from the end connected to the hydrogen storage tank to the other end. The hydrogen quick connector can quickly disconnect and connect the hydrogen pipeline;

[0009] The heat medium circulation system includes a heat medium storage tank and a heating device connected to the heat medium storage tank. The heat medium storage tank is connected to the heat medium buffer tank through a heat medium circulation pump. The heat medium storage tank is respectively connected to a cooler and the heat medium buffer tank through a three-way valve. The cooler is also connected to the heat medium buffer tank. The heat medium circulation system can achieve heat exchange with the hydrogen storage tank through the heat medium; the heat medium circulation pump and the cooler are both detachably connected to the heat medium buffer tank;

[0010] The control system includes a control cabinet installed on the solid-state hydrogen storage vehicle. The control cabinet is detachably connected to the heat medium circulation pump, the heating device, and the cooler respectively, for realizing dynamic adjustment.

[0011] Further, in the present invention, the hydrogen storage unit adopts a skid-mounted structure. The heat medium buffer tank is installed on the solid-state hydrogen storage vehicle. The interior of the heat medium buffer tank is a hollow structure for placing the hydrogen storage tank and enabling the heat medium to fully contact the hydrogen storage tank. A pressure relief valve or a safety valve is installed on each hydrogen storage tank.

[0012] Further, in the present invention, several hydrogen storage tanks are arranged in multiple layers vertically, and multiple hydrogen storage tanks are arranged in an array in each layer. Temperature sensors are provided in the heat medium buffer tank corresponding to the hydrogen storage tanks in each layer for monitoring the temperature of the hydrogen storage tanks.

[0013] Further, in the present invention, the hydrogen storage alloy in the hydrogen storage tank is any one or several of AB2 type, AB type, AB3 type, AB5 type, titanium-vanadium solid solution, and alloy.

[0014] Further, in the present invention, the heat medium storage tank is connected to the heat medium circulation pump through a heat medium storage inlet path. The heat medium circulation pump is connected to the heat medium buffer tank through a heat medium output pipeline; the heat medium storage tank is connected to the three-way valve through a heat medium storage outlet path. The three-way valve is connected to the cooler through a heat medium cooling inlet path. The cooler is connected to the heat medium buffer tank through a heat medium cooling outlet path and a heat medium input pipeline. The three-way valve is also connected to the heat medium input pipeline through a heat medium return pipeline.

[0015] Furthermore, a one-way valve is provided on the hot medium cooling outlet path of the present invention, a hot medium flow control valve is provided on the hot medium input pipeline, and hot medium quick connectors and hot medium stop valves are also provided on both the hot medium output pipeline and the hot medium input pipeline. The hot medium quick connectors can quickly disconnect and connect the hot medium circulation system.

[0016] Furthermore, in the present invention, the control cabinet is connected with a main control pipeline, and the main control pipeline is respectively connected to the hot medium circulation pump, the heating device, and the cooler through a circulation control pipeline, a heating control pipeline, and a cooling control pipeline.

[0017] Furthermore, in the present invention, the main control pipeline is detachably connected to the control cabinet.

[0018] The present invention has the following advantages compared with the prior art:

[0019] 1) The present invention provides a skid-mounted low-pressure metal hydride hydrogen storage system that is convenient for transportation and has a controllable hydrogen charging and discharging process, effectively improving safety.

[0020] 2) The mass hydrogen storage density of the solid-state hydrogen storage and transportation system of the present invention is relatively high compared with traditional hydrogen storage methods, the hydrogen charging and discharging speed is relatively fast, the device can be recycled, and no harmful substances are generated during production preparation and use.

[0021] 3) The external connection pipelines and circuits of the hydrogen storage unit of the present invention are few. During the hydrogen charging and discharging process, only the hot medium circulation pipeline and the hydrogen pipeline need to be connected, and the pipeline connection is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the system connection of the present invention.

[0023] Wherein: 1, hot medium buffer tank; 2, hydrogen storage tank body; 3, heating device; 4, hot medium storage tank; 5, hot medium circulation pump; 6, three-way valve; 7, one-way valve; 8, cooler; 9, hydrogen pipeline; 10, hydrogen pressure regulating valve; 11, flowmeter; 12, hydrogen quick connector; 13, hydrogen stop valve; 14, hydrogen filter; 15, control cabinet; 16, solid-state hydrogen storage vehicle; 17, hot medium stop valve; 18, hot medium quick connector; 19, hot medium flow control valve; 20, hot medium output pipeline; 21, hot medium storage inlet path; 22, hot medium storage outlet path; 23, hot medium return pipeline; 24, hot medium cooling inlet path; 25, hot medium cooling outlet path; 26, hot medium input pipeline; 27, main control pipeline; 28, circulation control pipeline; 29, heating control pipeline; 30, cooling control pipeline. DETAILED DESCRIPTION OF THE INVENTION

[0024] The following specifically describes the specific embodiments of the present invention in conjunction with the drawings.

[0025] Embodiment:

[0026] The specific implementation manner of a solid hydrogen storage and transportation system based on a solid hydrogen storage alloy according to the present invention is shown in combination with the accompanying drawings, which mainly includes a hydrogen storage unit, a peripheral hydrogen pipeline, a heat medium circulation system, and a control system.

[0027] Among them, the hydrogen storage unit adopts a skid-mounted structure for convenient vehicle transportation. The hydrogen storage unit includes a heat medium buffer tank 1, the inside of the heat medium buffer tank 1 is a hollow structure, and several hydrogen storage tanks 2 are arranged in the heat medium buffer tank 1 in multiple layers up and down, and multiple are arranged in an array in each layer. Each hydrogen storage tank 2 is filled with a hydrogen storage alloy, and forms a metal hydride to store hydrogen during hydrogen charging. The hydrogen storage alloy in the hydrogen storage tank 2 is any one or several of AB2 type, AB type, AB3 type, AB5 type, titanium-vanadium solid solution, and alloy. A pressure relief valve or a safety valve is installed on each hydrogen storage tank 2, and when the pressure in the tank exceeds the design pressure, it is safely discharged to ensure the safe operation of the hydrogen storage tank 2.

[0028] The heat medium buffer tank 1 has a size of 4720 mm in length, 2070 mm in width, and 1570 mm in height, and is made of glass fiber reinforced nylon with a glass fiber content of 50 - 60%, and the density is about 1600 kg / m 3 . According to the empirical formula for the design of a non-pressure-bearing water tank, its top cover thickness is 16 mm, the side wall thickness is 16 mm, and the bottom thickness is 50 mm, including a strengthening structure, and the total mass is about 1900 kg.

[0029] The hydrogen storage tank 2 is made of 6-series aluminum alloy, with a wall thickness of 9 mm, an outer diameter of 150 mm, and is fixed by threads, and the designed working pressure is 10 MPa. The hydrogen storage tank 2 is filled with a vanadium-based hydrogen storage alloy composite material with a hydrogen charging pressure less than 6.5 MPa, the alloy hydrogen storage capacity is 2.5 wt%, the alloy content of the composite material is 90%, the single-tank hydrogen storage capacity is 0.763 kg, and the single-tank mass including valves is 37.32 kg. The designed total hydrogen storage capacity is 350 kg, about 460 single tanks are required, and the actual total hydrogen storage capacity is 351.1379569 kg. Taking four single tanks as a group, the total mass including nylon brackets is 152.44 kg, a total of 115 groups are required, and the total mass is 17530.6 kg. About 10% of the pipeline mass of 1753 kg is reserved, and the total mass of the device is 21543.02 kg, and the mass hydrogen storage density of the device is 1.66 wt%. The volume of the heat medium buffer tank is 15.34 m 3 , and the volume hydrogen storage density is 22.83 kg / m 3 .

[0030] The peripheral hydrogen pipeline includes a hydrogen pipeline 9. Each hydrogen storage tank body 2 is connected to an external hydrogen source or a hydrogen-consuming device through the hydrogen pipeline 9. A hydrogen filter 14, a hydrogen stop valve 13, a hydrogen quick connector 12, a flowmeter 11, and a hydrogen pressure regulating valve 10 are successively arranged on the hydrogen pipeline 9 from the end connected to the hydrogen storage tank body 2 to the other end. The hydrogen filter 14 can prevent impurities from entering and leaving the hydrogen pipeline 9, and the hydrogen quick connector 12 can quickly disconnect and connect the hydrogen pipeline 9.

[0031] The heat medium circulation system includes a heat medium storage tank 4 and a heating device 3 connected to the heat medium storage tank 4. The heat medium storage tank 4 is connected to a heat medium circulation pump 5 through a heat medium storage inlet pipeline 21, and the heat medium circulation pump 5 is connected to a heat medium buffer tank 1 through a heat medium output pipeline 20. The heat medium storage tank 4 is connected to a three-way valve 6 through a heat medium storage outlet pipeline 22. The three-way valve 6 is connected to a cooler 8 through a heat medium cooling inlet pipeline 24. The cooler 8 is connected to the heat medium buffer tank 1 through a heat medium cooling outlet pipeline 25 and a heat medium input pipeline 26. A one-way valve 7 is arranged on the heat medium cooling outlet pipeline 25, and a heat medium flow control valve 19 is arranged on the heat medium input pipeline 26. The three-way valve 6 is also connected to the heat medium input pipeline 26 through a heat medium return pipeline 23. Heat medium quick connectors 18 and heat medium stop valves 17 are also arranged on both the heat medium output pipeline 20 and the heat medium input pipeline 26. The heat medium circulation system can achieve heat exchange with the hydrogen storage tank body 2 through the heat medium. The heat medium quick connector 18 can quickly disconnect and connect the heat medium circulation system. The heat medium circulation system and the heat medium circulation pipeline can be placed in a hydrogen refueling plant and a hydrogen-consuming unit to reduce the weight of the storage and transportation system.

[0032] The control system includes a control cabinet 15 installed on the solid-state hydrogen storage vehicle 16. The control cabinet 15 is connected with a main control pipeline 27. The main control pipeline 27 is respectively connected to the heat medium circulation pump 5, the heating device 3, and the cooler 8 through a circulation control pipeline 28, a heating control pipeline 29, and a cooling control pipeline 30 for realizing the dynamic regulation of the heat medium circulation pump 5, the heating device 3, and the cooler 8. The main control pipeline 27 is detachably connected to the control cabinet 15, which is convenient for connection.

[0033] The heat medium buffer tank 1 is installed on the solid-state hydrogen storage vehicle 16. The hollow structure inside the heat medium buffer tank 1 is used to place the hydrogen storage tank body 2 and enable the heat medium to be in full contact with the hydrogen storage tank body 2 to improve the heat exchange efficiency. During the hydrogenation process of the hydrogen storage tank body 2, the heat medium can take out the heat released by it from the heat medium buffer tank 1 to ensure the safety and hydrogen filling efficiency of the hydrogen storage tank body 2; during the dehydrogenation process of the hydrogen storage tank body 2, the heat medium brings external heat into the heat medium buffer tank 1 to uniformly heat the hydrogen storage tank body 2 to release hydrogen.

[0034] A temperature sensor is provided in each layer of the hydrogen storage tank 2 in the heat medium buffer box 1 to monitor the temperature of the hydrogen storage tank 2. During the hydrogenation process of the hydrogen storage tank 2, when the temperature of the hydrogen storage tank 2 exceeds the preset temperature, the control system will increase the working power of the heat medium circulation pump 5 and the cooler 8, and reduce the hydrogen flow rate to ensure the smooth progress of the hydrogenation process; during the hydrogenation process of the hydrogen storage tank 2, the control system controls the heating power of the heating device 3 according to the temperature of the hydrogen storage tank 2 to ensure the smooth release of hydrogen.

[0035] In the specific operation of this embodiment, during the hydrogenation process, the solid hydrogen storage vehicle 16 transports the hydrogen storage unit without heat medium to the hydrogenation plant, and connects the hydrogenation pipeline placed in the plant to the hydrogen quick interface 12, such as Figure 1 As shown, the installation of hydrogen source, hydrogen pressure regulating valve 10, flow meter 11 is completed, and the heat medium quick interface 18 is connected at the same time, and the main control pipeline 27 is connected to the control cabinet 15. After checking that everything is correct, the heat medium circulation pump 5 is turned on to establish heat medium circulation, and the hydrogen in the hydrogen pipeline 9 passes through the hydrogen stop valve 13 and the hydrogen filter 14 to deliver hydrogen with a pressure less than 6.5MPa to the hydrogen storage tank 2 of the hydrogen storage unit. The heat medium is driven by the heat medium circulation pump 5 from the heat medium storage box 4, through the heat medium storage outlet 22, through the three-way valve 6, and the heat medium cooling inlet 24 to enter the cooler 8. After being cooled by the cooler 8, it passes through the one-way valve 7, the heat medium cooling outlet 25, the heat medium input pipeline 26, the heat medium flow control valve 19, and the heat medium quick interface 18 from the heat medium stop valve 17 to enter the heat medium buffer box 1, and fully contacts with the hydrogen storage tank 2, taking away a large amount of heat generated by the hydrogen storage tank 2 during the hydrogen absorption process. Driven by the heat medium circulation pump 5, the heated heat medium returns to the heat medium storage box 4 through the heat medium stop valve 17, the heat medium quick interface 18, the heat medium output pipeline 20, and the heat medium storage inlet 21 in sequence, and enters the cooling process through the heat medium storage outlet 22. The temperature sensor in the heat medium buffer box 1 monitors the temperature of the hydrogen storage tank 2 in real time. If the temperature exceeds the preset critical value, the control cabinet 15 increases the power of the heat medium circulation pump 5 through the circulation control pipeline 28 via the main control pipeline 27, and increases the power of the cooler 8 through the cooling control pipeline 30, and increases the flow of the heat medium flow control valve 19 to accelerate the cooling efficiency, and uses the hydrogen pressure regulating valve 10 to reduce the hydrogen supply pressure, reduce the hydrogen flow, and reduce the risk of overheating during the hydrogenation process. As the hydrogenation process approaches the end, the temperature of the hydrogen storage tank 2 will gradually decrease. When the predetermined temperature is reached and the flow through the flow meter 11 reaches the designed flow, the hydrogen quick interface 12 is disconnected first, and the three-way valve 6 is closed, and the cooler 8 is closed. When the heat medium circulation pump 5 evacuates the heat medium in the heat medium buffer tank 1 , the heat medium quick interface 18 is disconnected, the main control pipeline 27 is disconnected, and the hydrogen storage unit is transported to the hydrogen use location by the solid hydrogen storage vehicle 16 .

[0036] When using hydrogen, connect the hydrogen release pipeline to the hydrogen quick interface 12 to complete the connection of the hydrogen-using equipment. At the same time, connect the heat medium quick interface 18 and connect the main control pipeline 27 to the control cabinet 15. After checking without errors, turn on the heating device 3 and the heat medium circulation pump 5 to establish a heat medium circulation. The hydrogen in the hydrogen storage tank 2 is transported to the hydrogen-using equipment through the hydrogen filter 14 and the hydrogen stop valve 13. The heat medium heated by the heating device 3 is driven by the heat medium circulation pump 5 from the heat medium storage tank 4 and successively passes through the heat medium storage outlet 22, the three-way valve 6, the heat medium return pipeline 23, the heat medium input pipeline 26, the heat medium flow control valve 19, and the heat medium quick interface 18 and enters the heat medium buffer tank 1 from the heat medium stop valve 17, making full contact with the hydrogen storage tank 2 to heat the hydrogen storage tank 2. The cooled heat medium is driven by the heat medium circulation pump 5 and successively passes through the heat medium stop valve 17, the heat medium quick interface 18, the heat medium output pipeline 20, and the heat medium storage inlet 21 to return to the heat medium storage tank 4 again, where it is heated by the heating device 3 and re-enters the heat medium buffer tank 1 through the heat medium return pipeline 23. The temperature sensor in the heat medium buffer tank 1 monitors the temperature of the hydrogen storage tank 2 in real time. If it is found that the temperature is lower than the preset critical value, the control cabinet 15 will increase the power of the heat medium circulation pump 5 through the main control pipeline 27 via the circulation control pipeline 28. At the same time, increase the power of the heating device 3 through the heating control pipeline 29 and increase the flow rate of the heat medium flow control valve 19 to accelerate the hydrogen release speed. As the hydrogen release process approaches the end, the temperature of the hydrogen storage tank 2 will gradually increase. When it reaches the predetermined temperature, first disconnect the hydrogen quick interface 12, close the three-way valve 6, and turn off the heating device 3. When the heat medium circulation pump 5 evacuates the heat medium in the heat medium buffer tank 1, disconnect the heat medium quick interface 18 and disconnect the main control pipeline 27 to complete the hydrogen release process. The hydrogen storage unit is transported by the solid hydrogen storage vehicle 16 to the hydrogen refueling plant for further hydrogenation.

[0037] For a traditional gaseous hydrogen storage long tube trailer with the same hydrogen storage capacity, the hydrogen storage pressure is 20 MPa, the total weight of the device and hydrogen is about 34,000 kg, and the volume of the box is about 27 m 3 , and the volumetric hydrogen storage density is about 12.96 kg / m 3 , and the mass hydrogen storage density is about 1.0 wt%. For a mobile hydrogen storage device using solid hydrogen storage materials, the hydrogen storage pressure is less than 6.5 MPa, and the volumetric hydrogen storage density is 22.83 kg / m 3 , and the mass hydrogen storage density is 1.66 wt%. Compared with the traditional long tube trailer, it has advantages in terms of safety, volumetric hydrogen storage density, and mass hydrogen storage density, and can achieve a higher hydrogen storage density at a lower hydrogen storage pressure.

[0038] Certainly, the above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly. It is not intended to limit the protection scope of the present invention. All modifications made according to the spirit and essence of the main technical solution of the present invention should be covered within the protection scope of the present invention.

Claims

1. A solid hydrogen storage and transportation system based on a solid hydrogen storage alloy, characterized in that: It includes a hydrogen storage unit, a peripheral hydrogen pipeline, a heat medium circulation system, and a control system; The hydrogen storage unit includes a heat medium buffer tank (1) and a plurality of hydrogen storage tanks (2) disposed within the heat medium buffer tank (1), and a hydrogen storage alloy is loaded inside the hydrogen storage tanks (2); The peripheral hydrogen pipeline includes a hydrogen pipeline (9). Each of the hydrogen storage tanks (2) is connected to an external hydrogen source or a hydrogen-using device through the hydrogen pipeline (9). A hydrogen filter (14), a hydrogen isolation valve (13), a hydrogen quick connector (12), a flowmeter (11), and a hydrogen pressure regulator (10) are successively provided on the hydrogen pipeline (9) from the end connected to the hydrogen storage tank (2) to the other end. The hydrogen quick connector (12) can quickly disconnect and connect the hydrogen pipeline (9); The heat medium circulation system includes a heat medium storage tank (4) and a heating device (3) connected to the heat medium storage tank (4). The heat medium storage tank (4) is connected to the heat medium buffer tank (1) through a heat medium circulation pump (5). The heat medium storage tank (4) is respectively connected to a cooler (8) and the heat medium buffer tank (1) through a three-way valve (6). The cooler (8) is also connected to the heat medium buffer tank (1). The heat medium circulation system can achieve heat exchange with the hydrogen storage tank (2) through the heat medium; the heat medium circulation pump (5) and the cooler (8) are both detachably connected to the heat medium buffer tank (1); The control system includes a control cabinet (15) installed on a solid-state hydrogen storage vehicle (16). The control cabinet (15) is detachably connected to the heat medium circulation pump (5), the heating device (3), and the cooler (8) respectively for realizing dynamic regulation.

2. The solid hydrogen storage and transportation system based on solid hydrogen storage alloy according to claim 1, wherein: The hydrogen storage unit adopts a skid-mounted structure. The heat medium buffer tank (1) is installed on the solid-state hydrogen storage vehicle (16). The interior of the heat medium buffer tank (1) is a hollow structure for placing the hydrogen storage tanks (2) and enabling the heat medium to be in full contact with the hydrogen storage tanks (2). A pressure relief valve or a safety valve is installed on each of the hydrogen storage tanks (2).

3. The solid hydrogen storage and transportation system based on solid hydrogen storage alloy according to claim 2, wherein: A plurality of the hydrogen storage tanks (2) are arranged in multiple layers vertically, and multiple are arranged in an array in each layer. Temperature sensors are provided in the heat medium buffer tank (1) corresponding to each layer of the hydrogen storage tanks (2) for monitoring the temperature of the hydrogen storage tanks (2).

4. A solid hydrogen storage and transportation system based on a solid hydrogen storage alloy according to claim 1, characterized in that: The hydrogen storage alloy in the hydrogen storage tank (2) is any one or several of AB2 type, AB type, AB3 type, AB5 type, titanium-vanadium solid solution, and alloy.

5. A solid hydrogen storage and transportation system based on a solid hydrogen storage alloy according to claim 1, characterized in that: The heat medium storage tank (4) is connected to the heat medium circulation pump (5) through a heat medium storage inlet line (21), and the heat medium circulation pump (5) is connected to the heat medium buffer tank (1) through a heat medium output pipeline (20); the heat medium storage tank (4) is connected to the three-way valve (6) through a heat medium storage outlet line (22), the three-way valve (6) is connected to the cooler (8) through a heat medium cooling inlet line (24), the cooler (8) is connected to the heat medium buffer tank (1) through a heat medium cooling outlet line (25) and a heat medium input pipeline (26), and the three-way valve (6) is also connected to the heat medium input pipeline (26) through a heat medium return pipeline (23).

6. The solid hydrogen storage and transportation system based on a solid hydrogen storage alloy according to claim 5, wherein: A check valve (7) is provided on the heat medium cooling outlet line (25), a heat medium flow control valve (19) is provided on the heat medium input pipeline (26), and heat medium quick connectors (18) and heat medium stop valves (17) are also provided on both the heat medium output pipeline (20) and the heat medium input pipeline (26). The heat medium quick connector (18) can quickly disconnect and connect the heat medium circulation system.

7. A solid hydrogen storage and transportation system based on a solid hydrogen storage alloy according to claim 1, characterized in that: The control cabinet (15) is connected with a main control pipeline (27), and the main control pipeline (27) is respectively connected to the heat medium circulation pump (5), the heating device (3), and the cooler (8) through a circulation control pipeline (28), a heating control pipeline (29), and a cooling control pipeline (30).

8. A solid hydrogen storage and transportation system based on a solid hydrogen storage alloy according to claim 7, characterized in that: The main control pipeline (27) is detachably connected to the control cabinet (15).

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