Low-temperature quick-start solid hydrogen storage device

Abstract

The invention discloses a low-temperature quick-start solid hydrogen storage device which comprises an insulating heat preservation shell and further comprises a solid hydrogen storage tank, a gaseous hydrogen storage tank, an air-cooled hydrogen fuel cell, a hydrogen supply mechanism and a heating mechanism, the solid hydrogen storage tank and the gaseous hydrogen storage tank are fixedly arranged in the insulating heat preservation shell, the solid hydrogen storage tank is filled with hydrogen storage alloy powder, and the air-cooled hydrogen fuel cell is arranged in the insulating heat preservation shell. A gas communicating pipe is fixedly arranged between the gaseous hydrogen storage tank and the solid hydrogen storage tank, a one-way valve is arranged in the gas communicating pipe, the air-cooled hydrogen fuel cell is arranged on one side of the insulation heat preservation shell, and the low-temperature quick-start solid hydrogen storage device is used for solving the problem that in the prior art, a solid hydrogen storage bottle is poor in hydrogen desorption performance in a low-temperature environment.

Description

Technical Field

[0001] The present invention relates to the technical field of solid-state hydrogen storage, and in particular to a low-temperature fast-start solid-state hydrogen storage device. Background Art

[0002] Existing hydrogen-powered two-wheelers, three-wheelers, and sightseeing vehicles commonly use small solid-state hydrogen storage bottles as hydrogen storage devices. These use solid-state hydrogen storage technology to physically or chemically store hydrogen in a solid medium. The hydrogen storage alloy inside the bottle reacts chemically with the hydrogen, breaking down the hydrogen into atoms on the alloy's surface and storing them within the alloy's lattice. To release the hydrogen, heating or changing the pressure reverses the chemical reaction between the hydrogen storage alloy and the hydrogen, causing the hydrogen atoms to precipitate from the alloy's lattice and combine to form hydrogen molecules for release.

[0003] However, there are the following problems in the hydrogen release process:

[0004] Poor low-temperature hydrogen release performance: Solid-state hydrogen storage materials can easily absorb hydrogen in low-temperature environments, and their hydrogen storage capacity is enhanced, but the hydrides are stable and hydrogen release is difficult, resulting in slow starting of vehicles or inability to supply hydrogen normally in cold northern regions.

[0005] High energy consumption: Traditional solutions rely on external electric heating to maintain the temperature of the hydrogen storage material, which increases system energy consumption and reduces endurance.

[0006] Low waste heat utilization: The waste heat generated by fuel cell operation is not effectively recovered, resulting in inefficient thermal management.

[0007] Although existing technologies have attempted to improve low-temperature performance by optimizing hydrogen storage materials or strengthening thermal insulation measures, there are still problems such as insufficient hydrogen desorption pressure and single thermal management. Summary of the Invention

[0008] (1) Technical problems solved

[0009] In view of the shortcomings of the existing technology, the present invention provides a low-temperature fast-start solid-state hydrogen storage device to solve the problem of poor hydrogen release performance of the existing solid-state hydrogen storage bottle in a low-temperature environment mentioned in the background technology.

[0010] (2) Technical solution

[0011] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a low-temperature, fast-start solid-state hydrogen storage device, comprising an insulating and heat-insulating shell, a solid-state hydrogen storage tank, a gaseous hydrogen storage tank, an air-cooled hydrogen fuel cell, a hydrogen supply mechanism, and a heating mechanism, wherein the solid-state hydrogen storage tank is fixedly arranged in the insulating and heat-insulating shell, the solid-state hydrogen storage tank is filled with hydrogen storage alloy powder, the gaseous hydrogen storage tank is in the insulating and heat-insulating shell and is located above the solid-state hydrogen storage tank, a gas connecting pipe is fixedly arranged between the gaseous hydrogen storage tank and the solid-state hydrogen storage tank, the gas connecting pipe has a built-in one-way valve, the air-cooled hydrogen fuel cell is arranged on one side of the insulating and heat-insulating shell, an air outlet is opened on the side wall of the air-cooled hydrogen fuel cell, the hydrogen supply mechanism is arranged between the insulating and heat-insulating shell and the air-cooled hydrogen fuel cell, for supplying hydrogen to the air-cooled hydrogen fuel cell, and the heating mechanism is arranged in the insulating and heat-insulating shell, for heating the hydrogen storage alloy powder in the solid-state hydrogen storage tank.

[0012] Preferably, the hydrogen supply mechanism includes a quick-connect hydrogen outlet, an air outlet pipe and an air inlet pipe. The quick-connect hydrogen outlet is installed on the top of the insulating and heat-insulating shell, and the quick-connect hydrogen outlet is connected to the gaseous hydrogen storage tank. A hydrogen pipe is provided between the input end of the air-cooled hydrogen fuel cell and the quick-connect hydrogen outlet. The top of the solid-state hydrogen storage tank is connected with the air outlet pipe, and the air outlet pipe is fixedly connected to the gas connecting pipe. The air inlet pipe is connected to the bottom of the gaseous hydrogen storage tank, and the air inlet pipe is fixedly connected to the gas connecting pipe.

[0013] Furthermore, the heating mechanism includes a jacket, a heat-conducting protrusion, an electric heating plate and an auxiliary heating mechanism. The jacket is arranged between the inner side of the insulating shell and the outer side of the solid-state hydrogen storage tank. The side wall of the jacket close to the solid-state hydrogen storage tank is evenly distributed with a plurality of the heat-conducting protrusions. The electric heating plate is embedded in the heat-conducting protrusion. A power supply cable is provided between the electric heating plate and the output end of the air-cooled hydrogen fuel cell. The auxiliary heating mechanism is arranged in the jacket for auxiliary heating of the hydrogen storage alloy powder in the solid-state hydrogen storage tank.

[0014] Furthermore, the auxiliary heating mechanism includes a waste heat air duct, a waste heat air duct and a waste heat exhaust port. The waste heat air duct is connected between the jacket and the air outlet. The waste heat air duct is formed between two adjacent heat-conducting protrusions in the jacket. The side wall of the bottom of the insulating shell is provided with a plurality of the waste heat exhaust ports, which are connected to the waste heat air duct.

[0015] Furthermore, a filter is installed in the waste heat exhaust port.

[0016] On the basis of the above solution, a mounting ring is fixedly provided on the top end of the inner wall of the air outlet pipe, and a filter barrel is fixedly provided on the inner wall of the mounting ring.

[0017] On the basis of the above solution, a fastening buffer pad is fixedly provided at the bottom end of the insulating and heat-insulating shell, and the fastening buffer pad is in contact with the solid-state hydrogen storage tank.

[0018] Based on the above scheme, the bottom of the insulating shell is provided with a screw-type bottom cover with a center hole, and the bottom of the solid-state hydrogen storage tank is fixed and connected with a quick-connect hydrogen filling port, which can be connected to an external hydrogen filling device through the center hole of the screw-type bottom cover.

[0019] Based on the above scheme, a first electronic control valve is installed on the hydrogen pipe, a second electronic control valve is installed on the waste heat air duct, a circuit control valve is installed on the power supply cable, and a controller is installed on the air-cooled hydrogen fuel cell. The controller is electrically connected to the first electronic control valve, the second electronic control valve and the circuit control valve.

[0020] (3) Beneficial effects

[0021] Compared with the prior art, the present invention provides a low-temperature fast-start solid-state hydrogen storage device with the following features:

[0022] Beneficial effects:

[0023] 1. In the present invention, by providing a gaseous hydrogen storage tank and a solid-state hydrogen storage tank, hydrogen can be quickly supplied to the air-cooled hydrogen fuel cell through the gaseous hydrogen storage tank, thereby facilitating rapid startup of the air-cooled hydrogen fuel cell. At the same time, after startup, the air-cooled hydrogen fuel cell begins to generate electricity and waste heat, and the solid-state hydrogen storage tank is heated by the electric heating plate and the jacket on the insulating shell, so that the solid-state hydrogen storage tank is quickly heated to a normal working state, and the electric heating is stopped, thereby facilitating stable hydrogen supply to the gaseous hydrogen storage tank and the air-cooled hydrogen fuel cell.

[0024] 2. In the present invention, by providing an auxiliary heating mechanism, during the operation of the air-cooled hydrogen fuel cell, the solid-state hydrogen storage tank can operate normally only by the waste heat of the air-cooled hydrogen fuel cell. The pressure of the hydrogen released by the hydrogen storage alloy powder is increased to the set value of the one-way valve opening, and hydrogen is replenished to the gaseous hydrogen storage tank, so that the gaseous hydrogen storage tank continuously supplies hydrogen to the air-cooled hydrogen fuel cell, ensuring the normal operation of the air-cooled hydrogen fuel cell. At the same time, the waste heat of the air-cooled hydrogen fuel cell reaches the jacket through the waste heat air duct, which can maintain the stable release of hydrogen from the solid-state hydrogen storage tank.

[0025] 3. In the present invention, through the setting of the gaseous hydrogen storage tank and the one-way valve, after the air-cooled hydrogen fuel cell is shut down, the gaseous hydrogen storage tank stops supplying hydrogen, the waste heat air duct stops heating the solid hydrogen storage tank so that its temperature gradually decreases, the hydrogen release pressure of the hydrogen storage alloy powder decreases, and the one-way valve closes to prevent hydrogen backflow. The pressure in the gaseous hydrogen storage tank is maintained at the time when the hydrogen supply is stopped, thereby ensuring that the subsequent gaseous hydrogen storage tank can quickly supply hydrogen to the air-cooled hydrogen fuel cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of this application;

[0027] Figure 2 A schematic diagram of the structure of the cross-section of this application;

[0028] Figure 3 This is a schematic diagram of the insulation shell structure of this application;

[0029] Figure 4 This is a schematic diagram of the cross-sectional structure of the heating mechanism of this application;

[0030] Figure 5 This is a schematic diagram of the cross-sectional structure of the jacket of this application;

[0031] Figure 6 This is the main view of the insulation shell of this application in a cutaway state;

[0032] Figure 7 This is the hydrogen absorption and desorption curve of the AB2 hydrogen storage material of this application at different temperatures.

[0033] In the figure: 1. Insulation shell; 2. Solid-state hydrogen storage tank; 3. Gas connecting pipe; 4. One-way valve; 5. Air-cooled hydrogen fuel cell; 6. Hydrogen pipe; 7. Quick-connect hydrogen outlet; 8. Outlet pipe; 9. Inlet pipe; 10. Jacket; 11. Heat-conducting bump; 12. Electric heating plate; 13. Waste heat air duct; 14. Waste heat exhaust port; 15. Filter barrel; 16. Fastening buffer pad; 17. Quick-connect hydrogen filling port; 18. First electronic control valve; 19. Second electronic control valve; 20. Circuit control valve; 21. Controller; 22. Gaseous hydrogen storage tank; 23. Air outlet; 24. Power supply cable; 25. Waste heat air duct; 26. Screw-type bottom cover. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figures 1-6 , a low-temperature fast-start solid-state hydrogen storage device, comprising an insulating and heat-insulating shell 1, a solid-state hydrogen storage tank 2, a gaseous hydrogen storage tank 22, an air-cooled hydrogen fuel cell 5, a hydrogen supply mechanism and a heating mechanism, wherein the solid-state hydrogen storage tank 2 is fixedly arranged in the insulating and heat-insulating shell 1, the solid-state hydrogen storage tank 2 is filled with hydrogen storage alloy powder, the gaseous hydrogen storage tank 22 is in the insulating and heat-insulating shell 1 and is located above the solid-state hydrogen storage tank 2, a gas connecting pipe 3 is fixedly arranged between the gaseous hydrogen storage tank 22 and the solid-state hydrogen storage tank 2, the gas connecting pipe 3 has a built-in one-way valve 4, the air-cooled hydrogen fuel cell 5 is arranged on one side of the insulating and heat-insulating shell 1, and an air outlet 23 is opened on the side wall of the air-cooled hydrogen fuel cell 5, the hydrogen supply mechanism is arranged between the insulating and heat-insulating shell 1 and the air-cooled hydrogen fuel cell 5, for supplying hydrogen to the air-cooled hydrogen fuel cell 5, and the heating mechanism is arranged in the insulating and heat-insulating shell 1, for heating the hydrogen storage alloy powder in the solid-state hydrogen storage tank 2.

[0036] Reference Figure 2 and Figure 6 , the hydrogen supply mechanism includes a quick-connect hydrogen outlet 7, an air outlet pipe 8 and an air inlet pipe 9. The quick-connect hydrogen outlet 7 is installed on the top of the insulating shell 1, and the quick-connect hydrogen outlet 7 is connected to the gaseous hydrogen storage tank 22. A hydrogen pipe 6 is provided between the input end of the air-cooled hydrogen fuel cell 5 and the quick-connect hydrogen outlet 7. The top of the solid-state hydrogen storage tank 2 is connected with the air outlet pipe 8, and the air outlet pipe 8 is fixedly connected to the gas connecting pipe 3. The air inlet pipe 9 is connected to the bottom of the gaseous hydrogen storage tank 22, and the air inlet pipe 9 is connected to the gas The connecting pipe 3 is fixedly connected. Specifically, through the arrangement of the gaseous hydrogen storage tank 22 and the solid-state hydrogen storage tank 2, hydrogen can be quickly supplied to the air-cooled hydrogen fuel cell 5 through the gaseous hydrogen storage tank, thereby facilitating the rapid start-up of the air-cooled hydrogen fuel cell 5. At the same time, the air-cooled hydrogen fuel cell 5 after startup begins to generate electricity and waste heat, so that the solid-state hydrogen storage tank 2 can be heated by the heating mechanism, so that the solid-state hydrogen storage tank 2 is quickly heated to reach a normal working state, the electric heating stops, and the solid-state hydrogen storage tank 2 begins to stably supply hydrogen to the gaseous hydrogen storage tank and the air-cooled hydrogen fuel cell 5.

[0037] Reference Figure 2-Figure 6The heating mechanism includes a jacket 10, a heat-conducting protrusion 11, an electric heating plate 12 and an auxiliary heating mechanism. The jacket 10 is arranged between the inner side of the insulating shell 1 and the outer side of the solid-state hydrogen storage tank 2. The jacket 10 is close to the side wall of the solid-state hydrogen storage tank 2 and is evenly distributed with a plurality of the heat-conducting protrusions 11. The heat-conducting protrusions 11 are embedded with the electric heating plate 12. A power supply cable 24 is provided between the electric heating plate 12 and the output end of the air-cooled hydrogen fuel cell 5. The auxiliary heating mechanism is arranged in the jacket 10 for heating the hydrogen storage compound in the solid-state hydrogen storage tank 2. The gold powder is used to assist in heating, and the auxiliary heating mechanism includes a waste heat air duct 13, a waste heat air duct 25 and a waste heat exhaust port 14. The waste heat air duct 13 is connected between the jacket 10 and the air outlet 23, and the waste heat air duct 25 is formed between two adjacent heat-conducting protrusions 11 in the jacket 10. The side wall of the bottom of the insulating shell 1 is provided with a plurality of the waste heat exhaust ports 14, which are connected to the waste heat air duct 25. A filter is installed in the waste heat exhaust port 14, a first electronic control valve 18 is installed on the hydrogen pipe 6, and a second electronic control valve is installed on the waste heat air duct 13. 19, a circuit control valve 20 is installed on the power supply cable 24, and a controller 21 is installed on the air-cooled hydrogen fuel cell 5. The controller 21 is electrically connected to the first electronic control valve 18, the second electronic control valve 19 and the circuit control valve 20. Specifically, during the operation of the air-cooled hydrogen fuel cell 5, the solid-state hydrogen storage tank 2 can operate normally only through the waste heat of the air-cooled hydrogen fuel cell 5. The pressure of the hydrogen released by the hydrogen storage alloy powder is increased to the opening set value of the one-way valve 4, and the solid-state hydrogen storage tank 2 starts to replenish hydrogen to the gaseous hydrogen storage tank 22, so that the gaseous hydrogen storage tank continuously supplies hydrogen to the air-cooled hydrogen fuel cell. 5 supplies hydrogen to ensure the normal operation of the air-cooled hydrogen fuel cell 5. At the same time, the waste heat of the air-cooled hydrogen fuel cell 5 reaches the jacket 10 through the waste heat air duct 13, which can maintain the stable release of hydrogen from the solid hydrogen storage tank 2. After the air-cooled hydrogen fuel cell 5 is shut down, the gaseous hydrogen storage tank 22 stops supplying hydrogen, and the waste heat air duct 13 stops heating the solid hydrogen storage tank 2 to gradually reduce its temperature. The hydrogen desorption pressure of the hydrogen storage alloy powder decreases, and the one-way valve 4 is closed to prevent hydrogen backflow. The pressure at the time of stopping the hydrogen supply is maintained in the gaseous hydrogen storage tank, thereby ensuring that the gaseous hydrogen storage tank 22 can quickly supply hydrogen to the air-cooled hydrogen fuel cell 5 when it is restarted.

[0038] Reference Figure 6 A mounting ring is fixedly provided on the top of the inner wall of the outlet pipe 8, and a filter barrel 15 is fixedly provided on the inner wall of the mounting ring, which can prevent the hydrogen storage alloy powder in the solid hydrogen storage tank 2 from entering the gaseous hydrogen storage tank 22 and causing the loss of hydrogen storage alloy powder.

[0039] Reference Figure 2 and Figure 4A fastening buffer pad 16 is fixedly provided at the bottom end of the insulating shell 1 , and the fastening buffer pad 16 is in contact with the solid-state hydrogen storage tank 2 to ensure the stability of the solid-state hydrogen storage tank 2 .

[0040] Reference Figure 6 The bottom of the insulating shell 1 is provided with a screw-type bottom cover 26 with a center hole, and the bottom of the solid hydrogen storage tank 2 is fixed and connected with a quick-connect hydrogen filling port 17. The quick-connect hydrogen filling port 17 can be connected to an external hydrogen filling device through the center hole of the screw-type bottom cover 26, so as to facilitate the supply of hydrogen to the hydrogen storage alloy powder.

[0041] Working principle: during use, when the air-cooled hydrogen fuel cell 5 needs to be started, the operator can control the first electronic control valve 18 to open through the controller 21, so that hydrogen can be quickly supplied to the air-cooled hydrogen fuel cell 5 through the gas hydrogen storage tank, thereby facilitating the rapid start of the air-cooled hydrogen fuel cell 5. At the same time, the air-cooled hydrogen fuel cell 5 after startup begins to generate electricity and waste heat. At this time, the second control valve and the circuit control valve 20 are opened, so that the solid-state hydrogen storage tank 2 can be heated through the electric heating plate 12 and the jacket 10 on the insulating shell 1, so that the solid-state hydrogen storage tank 2 quickly heats up to reach normal working state. At this time, the circuit control valve 20 is closed, the electric heating stops, and the solid-state hydrogen storage tank 2 can operate normally only through the waste heat of the air-cooled hydrogen fuel cell 5, which reduces the operating energy consumption, and the hydrogen storage alloy powder releases hydrogen. The pressure of the one-way valve 4 is increased to the setting value of the opening of the one-way valve 4, and the gaseous hydrogen storage tank 22 is started to be replenished with hydrogen, so that the gaseous hydrogen storage tank continuously supplies hydrogen to the air-cooled hydrogen fuel cell 5, ensuring the normal operation of the air-cooled hydrogen fuel cell 5. At the same time, the waste heat of the air-cooled hydrogen fuel cell 5 reaches the jacket 10 through the waste heat air duct 13, which can maintain the stable release of hydrogen from the solid-state hydrogen storage tank 2. After the air-cooled hydrogen fuel cell 5 is shut down, the gaseous hydrogen storage tank 22 stops supplying hydrogen, and the second control valve on the waste heat air duct 13 is closed, thereby stopping heating the solid-state hydrogen storage tank 2 and causing its temperature to gradually decrease, and the dehydrogenation pressure of the hydrogen storage alloy powder decreases. The one-way valve 4 is closed to prevent hydrogen from flowing back and close the first control valve. The gaseous hydrogen storage tank maintains the pressure when the hydrogen supply is stopped, thereby ensuring that the gaseous hydrogen storage tank 22 can quickly supply hydrogen to the air-cooled hydrogen fuel cell 5 when it is restarted.

[0042] In addition, it should be noted that, taking AB2 type titanium series hydrogen storage material as an example, the hydrogen absorption and desorption performance curve of the material is referenced Figure 7At temperatures of -15°C, 25°C, and 65°C, the hydrogen storage material's dehydrogenation platform pressures are 0.5MPa, 2.01MPa, and 3.5MPa, respectively. When the fuel cell is operating normally, the waste heat is 60-70°C, maintaining the temperature of the solid-state hydrogen storage tank 2 at around 25°C. This ensures a stable hydrogen supply pressure of over 2.0MPa for the hydrogen storage system. Under this condition, the hydrogen supply system can be maintained solely by the fuel cell's waste heat. Secondly, the opening pressure differential of one-way valve 4 is set to 0.03MPa. When the hydrogen pressure in solid-state hydrogen storage tank 2 is 0.03MPa higher than that in gaseous hydrogen storage tank 22, one-way valve 4 opens.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A low-temperature fast-start solid-state hydrogen storage device, comprising an insulating and heat-insulating shell (1), characterized in that: Also includes: A solid-state hydrogen storage tank (2), wherein the solid-state hydrogen storage tank (2) is fixedly arranged in the insulating and heat-insulating shell (1), and the solid-state hydrogen storage tank (2) is filled with hydrogen storage alloy powder; A gaseous hydrogen storage tank (22), the gaseous hydrogen storage tank (22) being located within the insulating and heat-insulating shell (1) and above the solid-state hydrogen storage tank (2), a gas communication pipe (3) being fixedly provided between the gaseous hydrogen storage tank (22) and the solid-state hydrogen storage tank (2), the gas communication pipe (3) having a built-in one-way valve (4); An air-cooled hydrogen fuel cell (5), the air-cooled hydrogen fuel cell (5) being arranged on one side of the insulating and heat-preserving shell (1), and an air outlet (23) being provided on a side wall of the air-cooled hydrogen fuel cell (5); a hydrogen supply mechanism, the hydrogen supply mechanism being arranged between the insulating and heat-insulating shell (1) and the air-cooled hydrogen fuel cell (5) and being used for supplying hydrogen to the air-cooled hydrogen fuel cell (5); A temperature raising mechanism is provided in the insulating and heat-preserving shell (1) and is used for raising the temperature of the hydrogen storage alloy powder in the solid-state hydrogen storage tank (2).

2. A low-temperature fast-start solid-state hydrogen storage device according to claim 1, characterized in that: The hydrogen supply mechanism comprises: A quick-connect hydrogen outlet (7), the quick-connect hydrogen outlet (7) being installed on the top of the insulating and heat-insulating shell (1), the quick-connect hydrogen outlet (7) being in communication with the gaseous hydrogen storage tank (22), and a hydrogen pipe (6) being provided between the hydrogen input end of the air-cooled hydrogen fuel cell (5) and the quick-connect hydrogen outlet (7); An air outlet pipe (8), the top of the solid-state hydrogen storage tank (2) is connected to the air outlet pipe (8), and the air outlet pipe (8) is fixedly connected to the gas connecting pipe (3); An air intake pipe (9) is arranged in communication with the bottom of the gaseous hydrogen storage tank (22), and the air intake pipe (9) is fixedly connected to the gas connecting pipe (3).

3. A low-temperature fast-start solid-state hydrogen storage device according to claim 2, characterized in that: The temperature raising mechanism comprises: A jacket (10), the jacket (10) being arranged between the inner side of the insulating shell (1) and the outer side of the solid-state hydrogen storage tank (2); Heat-conducting protrusions (11), a plurality of heat-conducting protrusions (11) are evenly distributed on a side wall of the jacket (10) close to the solid-state hydrogen storage tank (2); An electric heating plate (12), wherein the electric heating plate (12) is embedded in the heat-conducting protrusion (11), and a power supply cable (24) is provided between the electric heating plate (12) and the output end of the air-cooled hydrogen fuel cell (5); An auxiliary temperature-raising mechanism is provided in the jacket (10) and is used for auxiliary temperature-raising of the hydrogen storage alloy powder in the solid hydrogen storage tank (2).

4. A low-temperature fast-start solid-state hydrogen storage device according to claim 3, characterized in that: The auxiliary heating mechanism includes: a waste heat air duct (13), the waste heat air duct (13) being arranged in communication between the jacket (10) and the air outlet (23); A waste heat air duct (25) is formed between two adjacent heat-conducting protrusions (11) in the jacket (10); A waste heat exhaust port (14) is provided on the side wall of the bottom of the insulating and heat-preserving shell (1), and is connected to the waste heat air duct (25).

5. A low-temperature fast-start solid-state hydrogen storage device according to claim 4, characterized in that: A filter is installed in the waste heat discharge port (14).

6. A low-temperature fast-start solid-state hydrogen storage device according to claim 5, characterized in that: A mounting ring is fixedly provided on the top end of the inner wall of the air outlet pipe (8), and a filter barrel (15) is fixedly provided on the inner wall of the mounting ring.

7. A low-temperature fast-start solid-state hydrogen storage device according to claim 6, characterized in that: A fastening buffer pad (16) is fixedly provided at the bottom end of the insulating and heat-insulating shell (1), and the fastening buffer pad (16) is in contact with the solid-state hydrogen storage tank (2).

8. A low-temperature fast-start solid-state hydrogen storage device according to claim 7, characterized in that: The bottom of the insulating and heat-insulating shell (1) is provided with a screw-type bottom cover (26) with a center hole, and the bottom of the solid-state hydrogen storage tank (2) is fixed and connected with a quick-connect hydrogen filling port (17), and the quick-connect hydrogen filling port (17) can be connected to an external hydrogen filling device through the center hole of the screw-type bottom cover (26).

9. A low-temperature fast-start solid-state hydrogen storage device according to claim 8, characterized in that: A first electronic control valve (18) is installed on the hydrogen pipe (6), a second electronic control valve (19) is installed on the waste heat air pipe (13), a circuit control valve (20) is installed on the power supply cable (24), and a controller (21) is installed on the air-cooled hydrogen fuel cell (5). The controller (21) is electrically connected to the first electronic control valve (18), the second electronic control valve (19) and the circuit control valve (20).

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