Solid hydrogen storage tank and method of hydrogen storage

Abstract

The present application belongs to the technical field of compressed, liquefied or solidified gas container, and particularly relates to the technical field of liquefied, solidified or compressed gas loading method and equipment technology, and especially relates to a solid-state hydrogen storage tank and a hydrogen storage method thereof. The device comprises a solid-state hydrogen storage tank, a heat conduction sheet, a solid-state hydrogen storage box, a main conveying pipe, a secondary conveying pipe, a main circulating pipe, a secondary circulating pipe, a heat-resistant fixed plate, a pump body shell, an impeller and a bent connecting pipe. The device effectively solves the problems of uneven heat transfer, slow hydrogen release response and energy waste of traditional solid-state hydrogen storage devices, significantly improves the hydrogen storage and release efficiency, and through the circulating liquid as a heat carrier, the main heat collecting ring and the secondary heat collecting ring of the heat conduction sheet, the heat generated by the heater can be efficiently transferred to the main circulating pipe and the secondary circulating pipe, and then uniformly conducted to the solid-state hydrogen storage box through the heat conduction sheet, so as to ensure that the hydrogen storage material is uniformly heated, the hydrogen release rate is accelerated, and the material utilization rate is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of containers for holding or storing compressed, liquefied or solidified gases, specifically relating to the technical field of methods and equipment for loading liquefied, solidified or compressed gases into pressure vessels, and particularly to a solid hydrogen storage tank and its hydrogen storage method. Background Technology

[0002] Hydrogen energy is considered an important part of the future energy system due to its advantages such as high energy density and clean, carbon-free nature. Solid-state hydrogen storage technology stores hydrogen through chemical adsorption using materials such as metal hydrides. It features low operating pressure, good safety, and high volumetric hydrogen storage density, making it particularly suitable for mobile equipment with stringent requirements for safety and spatial layout, such as hydrogen-powered drones.

[0003] Existing solid-state hydrogen storage devices typically include a hydrogen storage tank, internal hydrogen storage materials, and supporting heating and hydrogen pipeline systems. To achieve controlled hydrogen release, external electric heating or fluid circulation heating is commonly used to heat the hydrogen storage materials. Some solutions involve wrapping heating tape around the outer wall of the tank or installing simple coils inside the tank for heat exchange. The released hydrogen is then transported to a fuel cell or engine through collection pipelines to generate power. In addition, to improve thermal management efficiency, some solutions propose using the waste heat generated by the operation of the fuel cell to provide some of the hydrogen decomposition energy for the hydrogen storage tank.

[0004] However, traditional heating methods have low heat transfer efficiency, making it difficult to distribute heat evenly and quickly inside the hydrogen storage material. This results in slow hydrogen release response and insufficient material utilization. Furthermore, the system lacks effective management and utilization of waste heat and residual hydrogen. After shutdown, the hydrogen storage tank may pose a safety risk due to the continuous release of hydrogen from the waste heat. Moreover, the failure to recover and reuse this hydrogen or waste heat in the system leads to energy waste.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0006] This disclosure provides at least one solid hydrogen storage tank and a hydrogen storage method thereof.

[0007] In a first aspect, embodiments of this disclosure provide a solid hydrogen storage tank, comprising: a solid hydrogen storage tank, a heat-conducting sheet, a solid hydrogen storage box, a main delivery pipe, a secondary delivery pipe, a main circulation pipe, a secondary circulation pipe, a heat-resistant fixing plate, a pump housing, an impeller, and a bent connecting pipe; wherein...

[0008] The solid hydrogen storage tank is cylindrical and has an axial end opening;

[0009] The heat conduction plates are fixed at equal intervals on the inner wall of the solid hydrogen storage tank, and a secondary circulation pipe is fixed on the heat conduction plates;

[0010] The main delivery pipe and the main circulation pipe are located inside the solid hydrogen storage tank, and the main delivery pipe and the main circulation pipe are coaxially arranged with the solid hydrogen storage tank. The main circulation pipe is fixedly connected to one end of the auxiliary circulation pipe, and the main circulation pipe and the auxiliary circulation pipe are connected. The main delivery pipe is located at the opening of the solid hydrogen storage tank, and the main circulation pipe is located between the bottom of the solid hydrogen storage tank and the main delivery pipe.

[0011] The heat-resistant fixing plate is fixedly installed on one side near the bottom of the solid hydrogen storage tank. A circulation chamber is provided between the bottom of the solid hydrogen storage tank and the heat-resistant fixing plate. The interior of the auxiliary circulation pipe is connected to the circulation chamber.

[0012] The pump body shell and the bent connecting pipe are installed inside the circulation chamber, and the end of the pump body shell without openings is fixedly connected to the bottom of the inner wall of the solid hydrogen storage tank.

[0013] In one optional embodiment, the inner side of the heat conduction sheet is provided with a sealing constraint plate, a fixing constraint plate and a heat insulation fixing plate. One side of the sealing constraint plate is in contact with the solid hydrogen storage box near the port of the solid hydrogen storage tank, and the sealing constraint plate is sealed to the inner wall of the solid hydrogen storage tank. One side of the fixing constraint plate is in contact with the solid hydrogen storage box near the bottom of the solid hydrogen storage tank, and the fixing constraint plate is fixedly connected to the inner wall of the solid hydrogen storage tank.

[0014] In one optional embodiment, the heat-insulating fixing plate is disposed between the heat-resistant fixing plate and the fixed constraint plate. The heat-insulating fixing plate is fixedly connected to the inner wall of the solid hydrogen storage tank. A heat-insulating cavity is formed between the fixed constraint plate and the heat-insulating fixing plate. A heating cavity is formed between the heat-insulating fixing plate and the heat-resistant fixing plate. A heat-conducting plate is provided inside the heating cavity. A main heat-collecting ring and a secondary heat-collecting ring are provided on the heat-conducting plate. The heat-conducting plate is tightly connected to the main circulation pipe through the main heat-collecting ring. The heat-conducting plate is tightly connected to the corresponding secondary circulation pipe through the secondary heat-collecting ring.

[0015] In one optional embodiment, a servo motor is provided on the outer side of the bottom of the solid hydrogen storage tank. A rotating connecting rod is provided on the side of the servo motor near the solid hydrogen storage tank. One end of the rotating connecting rod passes through the solid hydrogen storage tank and is inserted into the inner side of the pump body shell. An impeller is provided on the inner side of the pump body shell. The impeller is fixedly sleeved on the rotating connecting rod. A liquid exchange port is provided on the outer wall of the solid hydrogen storage tank. The liquid exchange port is connected to the circulation chamber. A heat-resistant sealing plug is provided on the inner side of the liquid exchange port.

[0016] In one optional embodiment, a temporary hydrogen storage tank is provided at the opening of the solid hydrogen storage tank. The temporary hydrogen storage tank is sealed to the solid hydrogen storage tank. The end of the main delivery pipe away from the main circulation pipe is fixedly connected to the temporary hydrogen storage tank. A control valve is provided inside the temporary hydrogen storage tank. One end of the control valve is sealed to the main delivery pipe.

[0017] In one optional embodiment, the temporary hydrogen storage tank is provided with a hydrogen delivery pipe on the side away from the solid hydrogen storage tank, the hydrogen delivery pipe is connected to the inside of the temporary hydrogen storage tank, a heating conveyor is provided on the side of the temporary hydrogen storage tank, a second control valve is provided on the inside of the heating conveyor, one end of the second control valve is inserted into the inside of the temporary hydrogen storage tank, and a conveying fixing seat is provided on the side of the heating conveyor away from the temporary hydrogen storage tank.

[0018] In one optional embodiment, the solid hydrogen storage tank is provided with a heater and a radiator on its side. The heater is located directly below the heating chamber, and the radiator is located directly below the circulation chamber. A heating delivery pipe is fixedly provided between the heating delivery device and the heater, and the heating delivery pipe connects the heating delivery device and the heater to each other. A support and fixing seat is provided at the end of the radiator and the heater away from the solid hydrogen storage tank.

[0019] In one optional embodiment, a battery mounting base is provided between the conveying mounting base and the supporting mounting base, and a non-standard battery is provided between the battery mounting base and the solid hydrogen storage tank. The sides of the supporting mounting base, the conveying mounting base, and the battery mounting base that are away from the solid hydrogen storage tank are on the same plane.

[0020] In one optional embodiment, the two ends of the bent connecting pipe are fixedly connected to the pump body shell and the main circulation pipe, respectively, so that the main circulation pipe and the inside of the pump body shell are connected through the bent connecting pipe. The secondary delivery pipe is fixedly installed on the main delivery pipe at equal intervals. The solid hydrogen storage box is installed between two corresponding heat conduction plates. One end of the secondary delivery pipe passes through the solid hydrogen storage box and is suspended in the air. A collection hole is opened on the secondary delivery pipe, and a connecting hole is opened on the solid hydrogen storage box.

[0021] Secondly, this disclosure also provides a solid-state hydrogen storage method, which is performed using a solid-state hydrogen storage tank as described above. The solid-state hydrogen storage method includes:

[0022] Step S1: Restart the power source, and the impeller rotation drives the heated circulating liquid to flow continuously in the circuit;

[0023] Step S2: The high-temperature circulating liquid is distributed to each auxiliary circulating pipe along the main circulating pipe;

[0024] In step S3, heat is transferred to the heat transfer plate through the secondary circulation pipe, and the solid hydrogen storage box is installed between two adjacent heat transfer plates;

[0025] In step S4, the heat conduction sheet evenly conducts heat to the solid hydrogen storage box, so that the hydrogen storage material inside the box is heated to the hydrogen release temperature.

[0026] The beneficial effects of this invention are that, through a solid hydrogen storage tank, it effectively solves the problems of uneven heat transfer, slow hydrogen release response, and energy waste in traditional solid hydrogen storage devices, significantly improving hydrogen storage and release efficiency. By using a circulating liquid as a heat carrier, in conjunction with the main and secondary heat collection rings of the heat-conducting plates, the heat generated by the heater can be efficiently transferred to the main and secondary circulation pipes, and then evenly conducted to the solid hydrogen storage box through the heat conduction plates, ensuring uniform heating of the hydrogen storage material, accelerating the hydrogen release rate, and improving material utilization.

[0027] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 A perspective view of a solid hydrogen storage tank provided in an embodiment of this disclosure;

[0031] Figure 2 A front view of a solid hydrogen storage tank provided in an embodiment of this disclosure;

[0032] Figure 3 A top cross-sectional view of a solid hydrogen storage tank provided in an embodiment of this disclosure;

[0033] Figure 4 A front cross-sectional view of a solid hydrogen storage tank provided in an embodiment of this disclosure;

[0034] Figure 5 This is a schematic diagram of the structure of a solid hydrogen storage box provided in an embodiment of the present disclosure;

[0035] Figure 6This is a schematic diagram of a heat-conducting sheet structure provided in an embodiment of the present disclosure;

[0036] Figure 7 A side cross-sectional view of a solid hydrogen storage tank provided in an embodiment of this disclosure;

[0037] Figure 8 This is a schematic diagram of the internal structure of a solid hydrogen storage tank provided in an embodiment of this disclosure.

[0038] In the picture:

[0039] 1. Solid hydrogen storage tank; 2. Heat transfer plate; 3. Sealing constraint plate; 4. Fixing constraint plate; 5. Solid hydrogen storage box; 6. Connecting hole; 7. Main delivery pipe; 8. Secondary delivery pipe; 9. Collection hole; 10. Heat-resistant sealing plug; 11. Main circulation pipe; 12. Secondary circulation pipe; 13. Temporary hydrogen storage tank; 14. Control valve No. 1; 15. Hydrogen delivery pipe; 16. Heating conveyor; 17. Delivery fixing seat; 18. Radiator; 19. Heater; 20. Support fixing seat; 21. Heating delivery pipe; 22. Battery fixing seat; 23. Irregularly shaped battery; 24. Control valve No. 2; 25. Heat insulation fixing plate; 26. Heat-resistant fixing plate; 27. Heat-conducting plate; 28. Secondary heat collection ring; 29. ​​Main heat collection ring; 30. Servo motor; 31. Pump body shell; 32. Rotating connecting rod; 33. Impeller; 34. Bending connecting pipe; 35. Liquid exchange port. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Research has found that existing solid-state hydrogen storage devices typically include a hydrogen storage tank, internal hydrogen storage materials, and supporting heating and hydrogen pipeline systems. To achieve controlled hydrogen release, external electric heating or fluid circulation heating is commonly used to heat the hydrogen storage materials. Some solutions involve wrapping heating tape around the outer wall of the tank or installing simple coils inside the tank for heat exchange. The released hydrogen is then transported to a fuel cell or engine through collection pipelines to generate power. In addition, to improve thermal management efficiency, some solutions propose using the waste heat generated by the operation of the fuel cell to provide some of the hydrogen decomposition energy for the hydrogen storage tank.

[0042] However, traditional heating methods have low heat transfer efficiency, making it difficult to distribute heat evenly and quickly inside the hydrogen storage material. This results in slow hydrogen release response and insufficient material utilization. Furthermore, the system lacks effective management and utilization of waste heat and residual hydrogen. After shutdown, the hydrogen storage tank may pose a safety risk due to the continuous release of hydrogen from the waste heat. Moreover, the failure to recover and reuse this hydrogen or waste heat in the system leads to energy waste.

[0043] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure below should be considered as the inventor's contribution to this disclosure.

[0044] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the embodiments and features described below can be combined with each other. Furthermore, in the accompanying drawings, the thickness of components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0046] Based on the above research, this disclosure provides a solid hydrogen storage tank, including: a solid hydrogen storage tank 1, a heat transfer plate 2, a solid hydrogen storage box 5, a main delivery pipe 7, a secondary delivery pipe 8, a main circulation pipe 11, a secondary circulation pipe 12, a heat-resistant fixing plate 26, a pump body shell 31, an impeller 33, and a bent connecting pipe 34. The solid hydrogen storage tank 1 is cylindrical and has an axial end opening. The heat transfer plates 2 are fixed at equal intervals on the inner wall of the solid hydrogen storage tank 1, and the secondary circulation pipe 12 is fixed on the heat transfer plates 2.

[0047] The main delivery pipe 7 and the main circulation pipe 11 are located inside the solid hydrogen storage tank 1, and the main delivery pipe 7 and the main circulation pipe 11 are coaxially arranged with the solid hydrogen storage tank 1. The main circulation pipe 11 is fixedly connected to one end of the auxiliary circulation pipe 12. The inner side of the main circulation pipe 11 is connected to the inner side of the auxiliary circulation pipe 12. The main delivery pipe 7 is located at the opening of the solid hydrogen storage tank 1, and the main circulation pipe 11 is located between the bottom end of the solid hydrogen storage tank 1 and the main delivery pipe 7.

[0048] A heat-resistant fixing plate 26 is fixedly installed on one side near the bottom of the solid hydrogen storage tank 1. A circulation chamber is provided between the bottom of the solid hydrogen storage tank 1 and the heat-resistant fixing plate 26. The internal part of the auxiliary circulation pipe 12 is connected to the circulation chamber. The pump body shell 31 and the bent connecting pipe 34 are installed inside the circulation chamber. The end of the pump body shell 31 without openings is fixedly connected to the bottom of the inner wall of the solid hydrogen storage tank 1.

[0049] The inner side of the heat conduction plate 2 is provided with a sealing constraint plate 3, a fixing constraint plate 4, and a heat insulation fixing plate 25. One side of the sealing constraint plate 3 is attached to the solid hydrogen storage box 5 near the port of the solid hydrogen storage tank 1, and the sealing constraint plate 3 is sealed to the inner wall of the solid hydrogen storage tank 1. One side of the fixing constraint plate 4 is attached to the solid hydrogen storage box 5 near the bottom of the solid hydrogen storage tank 1, and the fixing constraint plate 4 is fixedly connected to the inner wall of the solid hydrogen storage tank 1.

[0050] A servo motor 30 is provided on the outer side of the bottom of the solid hydrogen storage tank 1. A rotating connecting rod 32 is provided on the side of the servo motor 30 near the solid hydrogen storage tank 1. One end of the rotating connecting rod 32 passes through the solid hydrogen storage tank 1 and is inserted into the inner side of the pump body shell 31. An impeller 33 is provided on the inner side of the pump body shell 31. The impeller 33 is fixedly sleeved on the rotating connecting rod 32. A liquid exchange port 35 is provided on the outer wall of the solid hydrogen storage tank 1. The liquid exchange port 35 is connected to the circulation chamber. A heat-resistant sealing plug 10 is provided on the inner side of the liquid exchange port 35.

[0051] In specific implementation: open the heat-resistant sealing plug 10 inside the liquid exchange port 35 on the outer wall of the solid hydrogen storage tank 1, inject a preset amount of circulating liquid into the circulation chamber through the liquid exchange port 35, and at the same time start the servo motor 30 on the outer side of the bottom of the solid hydrogen storage tank 1. The servo motor 30 drives the rotating connecting rod 32 to rotate, thereby driving the impeller 33 inside the pump body shell 31 to rotate synchronously.

[0052] The impeller 33 rotates to generate suction power, drawing the circulating liquid in the circulation chamber into the inner side of the main circulation pipe 11 through the bent connecting pipe 34. The main circulation pipe 11 is connected to the auxiliary circulation pipe 12, and the circulating liquid is then diverted to each auxiliary circulation pipe 12. Finally, it flows back to the circulation chamber along the auxiliary circulation pipe 12, forming a complete circulation loop. The circulation continues until the main circulation pipe 11, the auxiliary circulation pipe 12, and the inside of the circulation chamber are completely filled with circulating liquid. At this time, the servo motor 30 is turned off, and the heat-resistant sealing plug 10 is reinserted into the liquid exchange port 35 to achieve system sealing and prevent leakage of circulating liquid or entry of external impurities.

[0053] Please see Figures 1-8 The present invention provides a technical solution: a heat-insulating fixing plate 25 is disposed between a heat-resistant fixing plate 26 and a fixing constraint plate 4, the heat-insulating fixing plate 25 is fixedly connected to the inner wall of the solid hydrogen storage tank 1, a heat-insulating cavity is formed between the fixing constraint plate 4 and the heat-insulating fixing plate 25, and a heating cavity is formed between the heat-insulating fixing plate 25 and the heat-resistant fixing plate 26. A heat-conducting plate 27 is provided inside the heating cavity. A main heat-collecting ring 29 and a secondary heat-collecting ring 28 are provided on the heat-conducting plate 27. The heat-conducting plate 27 is tightly connected to the main circulation pipe 11 through the main heat-collecting ring 29, and the heat-conducting plate 27 is tightly connected to the corresponding secondary circulation pipe 12 through the secondary heat-collecting ring 28.

[0054] In specific implementation: After the system is started, the heater 19 is turned on. The heat generated by the heater 19 directly acts on the heat-conducting plate 27 inside the heating chamber. The main heat-collecting ring 29 on the heat-conducting plate 27 is tightly attached to the main circulation pipe 11, and the secondary heat-collecting ring 28 is tightly connected to the corresponding secondary circulation pipe 12. The heat is quickly conducted to the main heat-collecting ring 29 and the secondary heat-collecting ring 28 through the heat-conducting plate 27, and then efficiently transferred to the circulating liquid inside the main circulation pipe 11 and the secondary circulation pipe 12, so as to achieve rapid heating of the circulating liquid. The heat insulation fixing plate 25 plays a blocking role, preventing the heat in the heating chamber from being unnecessarily transferred to the heat insulation chamber and the solid hydrogen storage box 5 area, ensuring that the heat is concentrated for heating the circulating liquid. The heat-resistant fixing plate 26, with its high-temperature resistance, ensures the stability of the surrounding structure of the heating chamber and prevents the components from deforming due to high temperature.

[0055] Please see Figures 1-8 The present invention provides a technical solution: a temporary hydrogen storage tank 13 is provided at the opening of the solid hydrogen storage tank 1. The temporary hydrogen storage tank 13 is sealed to the solid hydrogen storage tank 1. The end of the main delivery pipe 7 away from the main circulation pipe 11 is fixedly connected to the temporary hydrogen storage tank 13. A first control valve 14 is provided inside the temporary hydrogen storage tank 13. One end of the first control valve 14 is sealed to the main delivery pipe 7.

[0056] A hydrogen delivery pipe 15 is provided on the side of the temporary hydrogen storage tank 13 away from the solid hydrogen storage tank 1. The hydrogen delivery pipe 15 is connected to the inside of the temporary hydrogen storage tank 13. A heating conveyor 16 is provided on the side of the temporary hydrogen storage tank 13. A second control valve 24 is provided inside the heating conveyor 16. One end of the second control valve 24 is inserted into the inside of the temporary hydrogen storage tank 13. A conveying fixing seat 17 is provided on the side of the heating conveyor 16 away from the temporary hydrogen storage tank 13.

[0057] A heater 19 and a radiator 18 are provided on the side of the solid hydrogen storage tank 1. The heater 19 is located directly below the heating chamber, and the radiator 18 is located directly below the circulation chamber. A heating delivery pipe 21 is fixed between the heating delivery pipe 16 and the heater 19. The heating delivery pipe 21 connects the heating delivery pipe 16 and the heater 19 to each other. A support and fixing seat 20 is provided at the end of the radiator 18 and the heater 19 away from the solid hydrogen storage tank 1.

[0058] A battery mounting base 22 is provided between the conveying mounting base 17 and the supporting mounting base 20. A non-standard battery 23 is provided between the battery mounting base 22 and the solid hydrogen storage tank 1. The sides of the supporting mounting base 20, the conveying mounting base 17, and the battery mounting base 22 that are away from the solid hydrogen storage tank 1 are on the same plane.

[0059] The two ends of the bent connecting pipe 34 are fixedly connected to the pump body shell 31 and the main circulation pipe 11, respectively, so that the main circulation pipe 11 and the inside of the pump body shell 31 are connected through the bent connecting pipe 34. The auxiliary delivery pipe 8 is fixedly installed on the main delivery pipe 7 at equal intervals. The solid hydrogen storage box 5 is installed between two corresponding heat conduction plates 2. One end of the auxiliary delivery pipe 8 passes through the solid hydrogen storage box 5 and is suspended. A collection hole 9 is opened on the auxiliary delivery pipe 8, and a connecting hole 6 is opened on the solid hydrogen storage box 5.

[0060] In specific implementation: The irregularly shaped battery 23 is installed between the battery mounting base 22 and the solid hydrogen storage tank 1. The irregularly shaped battery 23 provides power to the servo motor 30, control valve 14, control valve 24 and other electrical components. The initial state of each component is checked to ensure that control valve 14 is closed, control valve 24 is closed, and heater 19 and radiator 18 are in standby state.

[0061] Restart the servo motor 30, and the impeller 33 rotates to drive the heated circulating liquid to flow continuously in the loop. The high-temperature circulating liquid is diverted along the main circulation pipe 11 to each secondary circulation pipe 12. The secondary circulation pipe 12 is fixedly connected to the heat conduction plate 2. Heat is transferred to the heat conduction plate 2 through the secondary circulation pipe 12. The heat conduction plate 2 is fixed at equal intervals on the inner wall of the solid hydrogen storage tank 1, and the solid hydrogen storage box 5 is installed between two adjacent heat conduction plates 2. The heat conduction plate 2 evenly conducts heat to the solid hydrogen storage box 5, so that the hydrogen storage material in the box is heated to the hydrogen release temperature.

[0062] When the hydrogen storage material inside the solid hydrogen storage box 5 is heated, it undergoes a dehydrogenation reaction. The released hydrogen gas overflows through the connecting hole 6 on the solid hydrogen storage box 5 into the internal space of the solid hydrogen storage tank 1. The auxiliary delivery pipes 8 are fixed at equal intervals on the main delivery pipe 7 and penetrate the solid hydrogen storage box 5. The collection holes 9 opened on the pipe wall correspond to the positions of the connecting holes 6 of the solid hydrogen storage box 5. The overflowing hydrogen gas enters the interior of the auxiliary delivery pipes 8 through the collection holes 9. The hydrogen gas collected by each auxiliary delivery pipe 8 is combined into the main delivery pipe 7. At this time, the first control valve 14 is opened, and the hydrogen gas enters the inner side of the temporary storage tank 13 along the main delivery pipe 7 for temporary storage. The temporary storage tank 13 is sealed to the solid hydrogen storage tank 1 to prevent hydrogen leakage and to stabilize the hydrogen pressure.

[0063] The hydrogen in the temporary hydrogen storage tank 13 is mainly transported to hydrogen-using equipment such as fuel cells and hydrogen engines through the hydrogen delivery pipe 15 for power generation or to provide power. When the system needs to enhance the heating effect, the second control valve 24 can be opened, and some hydrogen is transported to the heater 19 through the heating delivery device 16 and the heating delivery pipe 21. It is used as auxiliary fuel to mix with air and burn, supplementing the heater 19 with heat, realizing the internal recycling of hydrogen energy and reducing external energy consumption.

[0064] When the hydrogen storage material in the solid hydrogen storage box 5 has finished releasing hydrogen, or when the system needs to be stopped, turn off the heater 19 and the servo motor 30, and start the radiator 18. The radiator 18 cools the circulating liquid in the circulation chamber through heat exchange. The cooled circulating liquid can be used directly when starting up next time. If long-term shutdown is required, the heat-resistant sealing plug 10 can be opened and the circulating liquid can be discharged through the liquid exchange port 35 to avoid long-term idleness causing the circulating liquid to deteriorate.

[0065] The support bracket 20, the conveying bracket 17, and the battery bracket 22 respectively fix the heater 19, the radiator 18, the heating conveyor 16, and the irregularly shaped battery 23. The sides of the three that are away from the solid hydrogen storage tank 1 are on the same plane, ensuring that the entire device can be placed stably during installation and avoiding tipping due to the shift of the center of gravity. Each bracket is made of high-strength material and can withstand the weight of the components and the vibration during operation, ensuring the overall structural stability of the system. The irregularly shaped battery 23 continuously supplies power to the servo motor 30, the first control valve 14, the second control valve 24, and other electrical components. Its irregular structure is adapted to the shape of the solid hydrogen storage tank 1, which can make full use of space to achieve compact integration.

[0066] Furthermore, this disclosure also provides a solid-state hydrogen storage method, which is performed using a solid-state hydrogen storage tank as described above. The solid-state hydrogen storage method includes:

[0067] Step S1: Restart the power source, and the impeller 33 rotates to drive the heated circulating liquid to flow continuously in the circuit;

[0068] Step S2: The high-temperature circulating liquid is diverted along the main circulation pipe 11 to each auxiliary circulation pipe 12;

[0069] In step S3, heat is transferred to the heat transfer plate 2 through the secondary circulation pipe 12, and the solid hydrogen storage box 5 is installed between two adjacent heat transfer plates 2.

[0070] In step S4, the heat conduction sheet 2 evenly conducts heat to the solid hydrogen storage box 5, so that the hydrogen storage material inside the box is heated to the hydrogen release temperature.

[0071] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Based on the above-described ideal embodiments of the present invention, and through the above description, those skilled in the art can make various changes and modifications without departing from the technical spirit of the disclosed embodiments. The technical scope of the embodiments of this disclosure is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A solid hydrogen storage tank, characterized in that, include: Solid hydrogen storage tank (1), heat transfer plate (2), solid hydrogen storage box (5), main delivery pipe (7), auxiliary delivery pipe (8), main circulation pipe (11), auxiliary circulation pipe (12), heat-resistant fixing plate (26), pump body shell (31), impeller (33), and bent connecting pipe (34); among which, The solid hydrogen storage tank (1) is cylindrical and has an axial end opening; The heat conduction plates (2) are fixed at equal intervals on the inner wall of the solid hydrogen storage tank (1), and a secondary circulation pipe (12) is fixed on the heat conduction plates (2). The main delivery pipe (7) and the main circulation pipe (11) are located inside the solid hydrogen storage tank (1), and the main delivery pipe (7) and the main circulation pipe (11) are coaxially arranged with the solid hydrogen storage tank (1). The main circulation pipe (11) is fixedly connected to one end of the auxiliary circulation pipe (12), and the main circulation pipe (11) and the auxiliary circulation pipe (12) are connected. The main delivery pipe (7) is located at the opening of the solid hydrogen storage tank (1), and the main circulation pipe (11) is located between the bottom end of the solid hydrogen storage tank (1) and the main delivery pipe (7). The heat-resistant fixing plate (26) is fixedly installed on one side near the bottom of the solid hydrogen storage tank (1). A circulation chamber is provided between the bottom of the solid hydrogen storage tank (1) and the heat-resistant fixing plate (26). The interior of the auxiliary circulation pipe (12) is connected to the circulation chamber. The pump body shell (31) and the bent connecting pipe (34) are installed inside the circulation chamber. The end of the pump body shell (31) without openings is fixedly connected to the bottom of the inner wall of the solid hydrogen storage tank (1). The heat conduction plate (2) is provided with a sealing constraint plate (3), a fixing constraint plate (4) and a heat insulation fixing plate (25) on the inner side. One side of the sealing constraint plate (3) is in contact with the solid hydrogen storage box (5) near the port of the solid hydrogen storage tank (1). The sealing constraint plate (3) is sealed to the inner wall of the solid hydrogen storage tank (1). One side of the fixing constraint plate (4) is in contact with the solid hydrogen storage box (5) near the bottom of the solid hydrogen storage tank (1). The fixing constraint plate (4) is fixed to the inner wall of the solid hydrogen storage tank (1). The heat insulation fixing plate (25) is disposed between the heat-resistant fixing plate (26) and the fixed constraint plate (4). The heat insulation fixing plate (25) is fixedly connected to the inner wall of the solid hydrogen storage tank (1). A heat insulation cavity is formed between the fixed constraint plate (4) and the heat insulation fixing plate (25). A heating cavity is formed between the heat insulation fixing plate (25) and the heat-resistant fixing plate (26). A heat-conducting plate (27) is provided inside the heating cavity. A main heat collection ring (29) and a secondary heat collection ring (28) are provided on the heat-conducting plate (27). The heat-conducting plate (27) is tightly connected to the main circulation pipe (11) through the main heat collection ring (29). The heat-conducting plate (27) is tightly connected to the corresponding secondary circulation pipe (12) through the secondary heat collection ring (28). A servo motor (30) is provided on the outer side of the bottom of the solid hydrogen storage tank (1). A rotating connecting rod (32) is provided on the side of the servo motor (30) near the solid hydrogen storage tank (1). One end of the rotating connecting rod (32) passes through the solid hydrogen storage tank (1) and is inserted into the inner side of the pump body shell (31). An impeller (33) is provided on the inner side of the pump body shell (31). The impeller (33) is fixedly sleeved on the rotating connecting rod (32). A liquid exchange port (35) is provided on the outer wall of the solid hydrogen storage tank (1). The liquid exchange port (35) is connected to the circulation chamber. A heat-resistant sealing plug (10) is provided on the inner side of the liquid exchange port (35). The two ends of the bent connecting pipe (34) are fixedly connected to the pump body shell (31) and the main circulation pipe (11) respectively, so that the main circulation pipe (11) and the inside of the pump body shell (31) are connected through the bent connecting pipe (34). The auxiliary delivery pipe (8) is fixedly installed on the main delivery pipe (7) at equal intervals. The solid hydrogen storage box (5) is installed between two corresponding heat conduction plates (2). One end of the auxiliary delivery pipe (8) passes through the solid hydrogen storage box (5) and is suspended. A collection hole (9) is opened on the auxiliary delivery pipe (8), and a connecting hole (6) is opened on the solid hydrogen storage box (5).

2. A solid hydrogen storage tank according to claim 1, characterized in that, The solid hydrogen storage tank (1) has a temporary hydrogen storage tank (13) at the opening. The temporary hydrogen storage tank (13) is sealed to the solid hydrogen storage tank (1). The end of the main delivery pipe (7) away from the main circulation pipe (11) is fixedly connected to the temporary hydrogen storage tank (13). A first control valve (14) is provided inside the temporary hydrogen storage tank (13). One end of the first control valve (14) is sealed to the main delivery pipe (7).

3. A solid hydrogen storage tank according to claim 2, characterized in that, The temporary hydrogen storage tank (13) is provided with a hydrogen delivery pipe (15) on the side away from the solid hydrogen storage tank (1). The hydrogen delivery pipe (15) is connected to the inside of the temporary hydrogen storage tank (13). The side of the temporary hydrogen storage tank (13) is provided with a heating conveyor (16). The inside of the heating conveyor (16) is provided with a second control valve (24). One end of the second control valve (24) is inserted into the inside of the temporary hydrogen storage tank (13). The side of the heating conveyor (16) away from the temporary hydrogen storage tank (13) is provided with a conveying fixing seat (17).

4. A solid hydrogen storage tank according to claim 3, characterized in that, The solid hydrogen storage tank (1) is provided with a heater (19) and a radiator (18) on its side. The heater (19) is located directly below the heating chamber, and the radiator (18) is located directly below the circulation chamber. A heating delivery pipe (21) is fixedly provided between the heating delivery device (16) and the heater (19). The heating delivery pipe (21) connects the heating delivery device (16) and the heater (19) to each other. A support base (20) is provided at the end of the radiator (18) and the heater (19) away from the solid hydrogen storage tank (1).

5. A solid hydrogen storage tank according to claim 4, characterized in that, A battery holder (22) is provided between the conveying fixed seat (17) and the support fixed seat (20), and a non-circular battery (23) is provided between the battery holder (22) and the solid hydrogen storage tank (1). The sides of the support fixed seat (20), the conveying fixed seat (17), and the battery holder (22) that are away from the solid hydrogen storage tank (1) are on the same plane.

Images