An aluminum-based hydride hydrogen storage device

Abstract

The application relates to the hydrogen energy storage and release technical field and discloses an aluminum-based hydride hydrogen storage device which comprises an outer shell, a protective square shell and a hydrogen storage tank, the porous ceramic disc of the hydrogen storage tank is axially movable and is connected with a linkage assembly, a hollow rubber roller with a reciprocating guide groove is arranged in the hydrogen storage tank, a roller is embedded in the groove on a supporting frame of the linkage assembly, the end of the hollow rubber roller is connected with cross-shaped flexible cleaning strips, the cleaning strips are provided with cleaning brushes and scrapers, a filter plate and a pressing component are arranged in a gas collecting cavity, and the linkage assembly is further connected with an elastic reset component. The aluminum-based hydride thermal decomposition expansion drives the porous ceramic disc to move, the hollow rubber roller is driven to rotate through the linkage assembly, and the cleaning component drives the filter plate to be cleaned; and the elastic reset component realizes the reset of the porous ceramic disc and the compaction of the material. The application does not need external power, guarantees the efficient output of hydrogen through secondary filtration and self-cleaning, improves the cycle stability and safety, and has compact structure and convenient maintenance.

Description

Technical Field

[0001] This invention relates to the field of hydrogen energy storage and release technology, specifically to an aluminum-based hydride hydrogen storage device. Background Technology

[0002] Hydrogen energy, as a clean and efficient secondary energy source, plays a crucial role in the energy transition process. However, hydrogen storage technology is one of the core bottlenecks restricting the large-scale promotion and application of hydrogen energy. Aluminum-based hydrides have become a key research direction in the field of solid-state hydrogen storage materials due to their outstanding advantages such as high hydrogen storage capacity, excellent chemical stability, high hydrogen release purity, and environmental friendliness. Hydrogen storage devices based on this material are widely used in various scenarios such as fuel cell power systems, hydrogen power generation, and portable energy devices.

[0003] The basic structure of existing aluminum-based hydride hydrogen storage devices typically includes a hydrogen storage tank, a reaction chamber, a gas collection chamber, and a filter assembly. Its working principle involves heating the aluminum-based hydride in the reaction chamber to induce a thermal decomposition reaction, producing hydrogen gas. The hydrogen gas then passes through the filter assembly to remove solid impurities generated during the reaction and is discharged through the hydrogen outlet to supply energy. To achieve impurity interception, existing devices often use porous ceramic discs or metal filter plates as the filter medium, usually placed between the reaction chamber and the gas collection chamber, or near the hydrogen outlet, to prevent solid particles from entering subsequent pipelines or hydrogen-using equipment.

[0004] However, existing aluminum-based hydride hydrogen storage devices still have many technical shortcomings in practical applications, as follows:

[0005] The filter media is prone to clogging, leading to a decrease in hydrogen output efficiency: The thermal decomposition of aluminum-based hydrides not only produces hydrogen but also causes significant volume expansion, and the reaction products generate a large number of fine solid particles. These particles easily adhere to the surface of the filter media and may even penetrate its pores, causing blockage. This gradually increases the resistance to hydrogen flow, significantly reducing output efficiency. To restore performance, periodic shutdowns are required to disassemble, clean, or replace the filter media, increasing maintenance costs and downtime, and affecting the continuous operational stability of the system.

[0006] The material after the reaction is loose and the recycling efficiency is insufficient: the residue after the decomposition of aluminum-based hydride is in a loose state, which will continue to occupy the internal space of the reaction chamber and cannot be automatically compacted and reset; this leads to a reduction in the effective filling amount of aluminum-based hydride in subsequent hydrogen storage cycles, a decrease in the space utilization rate of the reaction chamber, and a direct restriction on the hydrogen storage and release efficiency of the hydrogen storage device.

[0007] The cleaning structure relies on external power, which poses safety hazards and cost issues: Some existing technologies use external power components such as motors and cylinders to drive the cleaning components to solve the problem of filter media clogging. Such structures not only increase the overall complexity and manufacturing cost of the hydrogen storage device, but also increase the system's energy consumption. At the same time, the sealing design of the power components is difficult, which can easily lead to the risk of hydrogen leakage and threaten the safety of equipment use.

[0008] In summary, existing aluminum-based hydride hydrogen storage devices still have significant room for improvement in key performance aspects such as filtration and anti-clogging, material recycling, energy consumption control, and safety protection. There is an urgent need to develop a high-efficiency hydrogen storage device that is compact, can achieve automatic cleaning and material compaction without external power, and has excellent safety performance, in order to meet the high-performance requirements of hydrogen energy application scenarios for hydrogen storage equipment. Summary of the Invention

[0009] To address the shortcomings of existing technologies, this invention provides an aluminum-based hydride hydrogen storage device that solves the problems of filter clogging, low material circulation efficiency, reliance on external power, and insufficient safety protection in existing hydrogen storage devices.

[0010] To achieve the above objectives, the present invention provides the following technical solution: an aluminum-based hydride hydrogen storage device, comprising a shell, a protective square shell disposed within the shell, and a hydrogen storage tank disposed within the protective square shell; one end of the hydrogen storage tank is provided with an inlet for filling aluminum-based hydride, and the other end is provided with a hydrogen outlet for discharging hydrogen gas; the interior of the hydrogen storage tank is divided into a reaction chamber on the left and a gas collection chamber on the right by a porous ceramic disc; the outer edge of the porous ceramic disc slides against the inner wall of the hydrogen storage tank and can move freely along the axial direction of the hydrogen storage tank; its material is porous ceramic, and the pore structure allows hydrogen molecules to pass through while blocking solid particles from entering the gas collection chamber.

[0011] Furthermore, the hydrogen storage tank is equipped with a hollow rubber roller, which is rotatably supported inside the hydrogen storage tank by a triangular fixing frame. The bottom of the triangular fixing frame is fixedly connected to the inner wall of the hydrogen storage tank. The outer surface of the hollow rubber roller is provided with a reciprocating guide groove. The groove has a non-linear trajectory, and its geometric path is configured to convert the linear displacement along the axial direction into rotational motion around the axis of the hollow rubber roller.

[0012] The porous ceramic disc is connected to a support frame via a linkage assembly. The linkage assembly includes a push-pull rod, one end of which is hinged to the porous ceramic disc via a connecting block, and the other end is hinged to a movable block fixed to the bottom of the support frame. A roller is mounted on the support frame and is embedded in the reciprocating guide groove. When the aluminum-based hydride undergoes thermal decomposition and volume expansion under heating conditions, the expansion force pushes the porous ceramic disc to move along the hydrogen storage tank axis toward the gas collection chamber. This movement is transmitted to the support frame via the push-pull rod, causing the roller to roll along the reciprocating guide groove, thereby driving the hollow rubber roller to rotate around its own axis.

[0013] Furthermore, a flexible cleaning strip is fixedly connected to the end of the hollow rubber roller. Two flexible cleaning strips are provided and arranged in a cross shape, with their outer ends connected to the inner diameter of the rotating ring. The rotating ring is rotatably disposed inside the hydrogen storage tank, and its outer circumference is provided with an annular flange. This flange is embedded in an annular groove on the inner wall of the hydrogen storage tank, forming a rotating pair. A cleaning component is integrated on the side of the flexible cleaning strip facing the filter plate. The cleaning component includes a cleaning brush and a cleaning scraper. The cleaning brush is fixed to the surface of the flexible cleaning strip and is used to remove particles adhering to the surface of the filter plate. The cleaning scraper has a thin sheet structure, and its cutting edge is in contact with the surface of the filter plate to scrape away fine blockages in the pores of the filter plate.

[0014] The gas collection chamber is equipped with a filter plate located near the hydrogen outlet. This filter plate intercepts fine particles that may still be carried after passing through the porous ceramic disc. The filter plate is connected to a filter plate clamping component via an mounting ring. The clamping component includes a second movable block, a second sliding rod, and a second spring. A straight groove is formed on the inner wall of the hydrogen storage tank. The second sliding rod is fixed within the groove, and the second movable block is slidably fitted onto the second sliding rod. The mounting ring is fixedly connected to the second movable block. The second spring is fitted onto the second sliding rod and abuts against the inner wall of the hydrogen storage tank. Its elasticity continuously pushes the filter plate towards the rotating ring, ensuring that the filter plate remains in contact with the cleaning brush and cleaning scraper.

[0015] Furthermore, the linkage assembly is also connected to an elastic reset component; the elastic reset component includes a slide rod and a spring sleeved on it; the slide rod is fixed between two triangular fixing frames, the moving block is slidably mounted on the slide rod, and the spring abuts against the moving block and the triangular fixing frames; when the porous ceramic disc moves towards the gas collecting chamber due to material expansion, the compressed spring accumulates elastic potential energy; when the hydrogen outlet is opened and the internal pressure of the hydrogen storage tank decreases, the spring releases the accumulated elastic potential energy, pushing the moving block to move in the opposite direction, and driving the porous ceramic disc to reset to the initial position through the push-pull rod, axially compacting the loose material after the reaction, and restoring the effective volume of the reaction chamber.

[0016] Specifically, an embedded sliding column is fixed to the center of the porous ceramic disc facing the gas collection chamber via a connecting block two. The other end of the embedded sliding column is slidably and rotatably inserted into the inner hole of the hollow rubber roller via the embedded disc. This structure allows the connection between the porous ceramic disc and the hollow rubber roller to slide relative to each other during axial movement without interfering with the rotational freedom of the hollow rubber roller, thereby ensuring the independence and synchronization of the linkage transmission and cleaning action.

[0017] The protective shell is provided with a heat insulation structure between the outer shell and the outer shell, and between the protective shell and the hydrogen storage tank. The heat insulation structure is made of a low thermal conductivity material and is used to isolate the heat generated by the hydrogen storage tank during the heating reaction process, preventing the high temperature from being conducted to the outer shell and the external environment. The outer shell is also provided with a safety pressure relief valve. When the internal pressure of the hydrogen storage tank exceeds a set threshold, the safety pressure relief valve opens to release the internal pressure and prevent the equipment from structural failure due to overpressure.

[0018] This invention provides an aluminum-based hydride hydrogen storage device. It has the following beneficial effects:

[0019] 1. This invention utilizes the axial movement of a porous ceramic disc under the thermal decomposition and expansion of aluminum-based hydrides. Through a linkage component and a reciprocating guide groove structure, the linear motion is converted into the rotational motion of a hollow rubber roller, which in turn drives a flexible cleaning strip to automatically clean the filter plate. Simultaneously, the vibration generated during the spring's return process is transmitted to the porous ceramic disc, effectively shaking off particles adhering to its surface, thus achieving self-cleaning of the primary filtration structure. This process requires no external power source, achieving self-sufficiency and efficient utilization of energy, significantly reducing system energy consumption and operating costs.

[0020] 2. This invention uses a porous ceramic disc as the primary filter and a filter plate as the secondary fine filter, effectively blocking solid particles from entering the gas collection chamber; combined with a rotating cleaning brush and scraper, it can remove the adhering substances on the surface and in the pores of the filter plate in real time, prevent blockage, keep the airflow channel unobstructed, extend the service life of the filter plate, and ensure continuous and efficient output of hydrogen.

[0021] 3. The present invention uses spring one in the elastic reset component to push the porous ceramic disk to reset after hydrogen release, thereby axially compacting the expanded and loose aluminum-based hydride after the reaction, restoring the effective volume of the reaction chamber, and preparing for the next hydrogen storage and release cycle; this mechanism enhances the material density, which is beneficial to improving reaction efficiency and cycle stability.

[0022] 4. The invention has a high degree of overall structural integration, and achieves the coordinated operation of multiple functions such as cleaning, filtration and compaction through mechanical linkage; the components are precisely matched and the action response is sensitive, and adaptive adjustment can be completed without electrical control, which improves the mechanical reliability and maintenance convenience of the system. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a schematic diagram of the exploded structure of the outer casing of the present invention;

[0025] Figure 3 This is a cross-sectional structural diagram of the protective square shell of the present invention;

[0026] Figure 4 This is a schematic cross-sectional view of the hydrogen storage tank of the present invention;

[0027] Figure 5 This is a schematic diagram of the hollow rubber roller, porous ceramic disc, and filter plate of the present invention.

[0028] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0029] Figure 7 This is an exploded view of the hollow rubber roller, porous ceramic disc, and filter plate of the present invention.

[0030] Figure 8 This is a schematic diagram of the hydrogen storage tank and filter plate of the present invention;

[0031] Figure 9 for Figure 8 A magnified view of Figure B in the middle;

[0032] Figure 10 This is a schematic diagram of the hollow rubber roller and rotating ring of the present invention;

[0033] Figure 11 for Figure 10 A magnified view of point C in the middle.

[0034] The components include: 1. Outer shell; 2. Protective square shell; 3. Hydrogen outlet port; 4. Inlet port; 5. Hydrogen storage tank; 6. Hollow rubber roller; 61. Reciprocating guide groove; 62. Roller; 63. Support frame; 64. Triangular fixing frame; 65. Slide rod one; 66. Spring one; 67. Moving block one; 68. Push-pull rod; 69. Connecting block one; 7. Porous ceramic disc; 71. Embedded sliding column; 72. Embedded disc; 73. Connecting block two; 8. Straight slide groove; 81. Slide rod two; 82. Spring two; 83. Moving block two; 84. Mounting ring; 85. Filter plate; 9. Rotating ring; 91. Flexible cleaning strip; 92. Cleaning brush; 93. Cleaning scraper. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described 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.

[0036] The following detailed description, in conjunction with the accompanying drawings, illustrates a specific embodiment of a high-efficiency aluminum-based hydride hydrogen storage device according to the present invention: Figure 1 As shown, the overall structure of the present invention includes an outer shell 1, a protective square shell 2 nested inside the outer shell 1, and a hydrogen storage tank 5 disposed within the inner cavity of the protective square shell 2; one end of the hydrogen storage tank 5 is provided with an inlet 4 for filling with aluminum-based hydride raw materials, and the other end is provided with a hydrogen outlet 3 for discharging the hydrogen gas generated in the reaction; in addition, as Figure 2 and Figure 3 As shown, the protective shell 2 is fixed to the inner wall of the outer shell 1 by welding or bolting, forming a double-layer thermal insulation and mechanical protection structure. Thermal insulation structures made of low thermal conductivity materials are provided between the protective shell 2 and the hydrogen storage tank 5, as well as between the protective shell 2 and the outer shell 1, effectively isolating the high temperature generated by the hydrogen storage tank 5 during the heating reaction process and preventing heat conduction to the external environment. Finally, it should be noted that the outer shell 1 also integrates a safety pressure relief valve, which automatically opens when the internal pressure of the hydrogen storage tank 5 abnormally increases, releasing excess pressure and ensuring the safe operation of the equipment. This is a well-known technical means in the field.

[0037] like Figure 4 As shown, the interior of the hydrogen storage tank 5 is divided into a reaction chamber on the left and a gas collection chamber on the right by a porous ceramic disc 7. The outer edge of the porous ceramic disc 7 slides against the inner wall of the hydrogen storage tank 5 and can move freely along the axial direction. Its material is porous ceramic, and its pore structure allows hydrogen molecules to pass through while blocking solid particles with a diameter larger than a set threshold from entering the gas collection chamber. Figure 5 , Figure 6 and Figure 7 As shown, an embedded sliding column 71 is fixed to the center of the side of the porous ceramic disc 7 facing the gas collection chamber via a connecting block 2 73. The other end of the embedded sliding column 71 is connected to an embedded disc 72. The entire assembly is inserted into the inner hole of the hollow rubber roller 6. It should be specifically noted that a small gap is maintained between the embedded sliding column 71 and the inner hole of the hollow rubber roller 6, allowing them to slide in the axial direction and rotate relative to each other in the circumferential direction. This ensures that when the porous ceramic disc 7 moves axially due to the expansion of the material, it will not interfere with the rotational freedom of the hollow rubber roller 6.

[0038] like Figure 5 , Figure 7 and Figure 10As shown, the hollow rubber roller 6 is rotatably supported inside the hydrogen storage tank 5 by a triangular fixing frame 64. The bottom of the triangular fixing frame 64 is fixedly connected to the inner wall of the hydrogen storage tank 5 by welding or bolting, providing stable support for the hollow rubber roller 6. The outer surface of the hollow rubber roller 6 is machined with a reciprocating guide groove 61. The groove has a non-linear trajectory, specifically a spiral or sine wave. Its geometric path is configured to convert the linear displacement along the axial direction into rotational motion around the axis of the hollow rubber roller 6. The support frame 63 is located below the hollow rubber roller 6. A moving block 67 is fixedly connected to its bottom end. A roller 62 is installed on the upper part of the support frame 63 by a pin. The roller 62 is embedded in the reciprocating guide groove 61, and its diameter matches the width of the groove to ensure smooth rolling without jamming.

[0039] like Figure 5 , Figure 6 and Figure 8 As shown, the porous ceramic disc 7 and the support frame 63 are connected by a linkage assembly; the linkage assembly includes a push-pull rod 68, one end of which is hinged to the porous ceramic disc 7 via a connecting block 69, and the other end is hinged to the middle of the moving block 67; therefore, when the aluminum-based hydride undergoes thermal decomposition under heating conditions and is accompanied by volume expansion, the expansion force pushes the porous ceramic disc 7 to move along the hydrogen storage tank 5 axially toward the gas collection chamber. This movement is transmitted to the moving block 67 via the push-pull rod 68, causing the support frame 63 to move synchronously, so that the roller 62 rolls along the reciprocating guide groove 61, thereby driving the hollow rubber roller 6 to rotate around its own axis.

[0040] like Figure 10 and Figure 11 As shown, two flexible cleaning strips 91 arranged in a cross shape are fixedly connected to the end of the hollow rubber roller 6. The outer end of the flexible cleaning strip 91 is connected to the inner diameter of the rotating ring 9. The rotating ring 9 is an annular metal part with an annular flange on its outer circumference. The flange is embedded in an annular groove opened in the inner wall of the hydrogen storage tank 5 near the hydrogen outlet 3, forming a rotating pair, so that the rotating ring 9 can rotate freely around the axis of the hydrogen storage tank 5. A cleaning component is integrated on the side of the flexible cleaning strip 91 facing the filter plate 85. The cleaning component includes a cleaning brush 92 and a cleaning scraper 93. The cleaning brush 92 is fixed to the surface of the flexible cleaning strip 91 and is used to sweep away particles attached to the surface of the filter plate 85. The cleaning scraper 93 is an arc-shaped thin sheet with its cutting edge in contact with the surface of the filter plate 85 and is used to scrape away the fine blockages in the pores of the filter plate 85.

[0041] like Figure 8 and Figure 9As shown, filter plate 85 is located in the gas collection chamber on the right side of hydrogen storage tank 5, near hydrogen outlet port 3, to intercept fine particles that may still be carried after passing through porous ceramic disc 7. Filter plate 85 is made of stainless steel sintered mesh or porous metal membrane, and its pore size is smaller than that of porous ceramic disc 7, forming a two-stage filtration mechanism. The filter plate 85 is fixed on mounting ring 84, which is an annular structure with a flange. Its inner hole is fixed to the outer edge of filter plate 85 by interference fit or threaded connection. The mounting ring 84 is connected to a second movable block 83, which is fitted onto a second sliding rod 81, which is cylindrical. A metal rod with a polished surface to reduce frictional resistance is fixed at both ends to a straight groove 8 on the inner wall of the hydrogen storage tank 5. There are at least two straight grooves 8, which are symmetrically arranged to ensure smooth movement of the filter plate 85. A spring 82 is sleeved on the slide rod 81. The spring 82 is a compression spring, with one end abutting against the moving block 83 and the other end abutting against the inner wall of the hydrogen storage tank 5. It always applies a thrust to the moving block 83 in the direction of the rotating ring 9, so that the filter plate 85 keeps in close contact with the cleaning brush 92 and the cleaning scraper 93. The contact pressure is sufficient to remove the attached particles without damaging the surface of the filter plate 85.

[0042] like Figure 5 , Figure 6 and Figure 7 As shown, the linkage assembly is also connected to an elastic reset component; the elastic reset component includes a slide rod 65 and a spring 66 sleeved on it; there are two slide rods 65 arranged symmetrically, with both ends fixed between two triangular fixing frames 64, and the surface is also polished; the moving block 67 is slidably fitted on the slide rod 65, and the spring 66 is sleeved on the slide rod 65 and abuts against the moving block 67 and the triangular fixing frame 64; it should be noted that when the porous ceramic disk 7 moves towards the gas collection chamber due to the expansion of the material, the push-pull rod 68 drives the moving block 67 to slide along the slide rod 65, compressing the spring 66 to accumulate elastic potential energy; when the hydrogen outlet port 3 is opened and the internal pressure of the hydrogen storage tank 5 decreases, the spring 66 releases the accumulated elastic potential energy, pushes the moving block 67 to move in the opposite direction, and drives the porous ceramic disk 7 to reset to the initial position through the push-pull rod 68, axially compacting the loose material after the reaction and restoring the effective volume of the reaction chamber.

[0043] The working process of the hydrogen storage device of the present invention is as follows: S1 Aluminum-based hydride is filled into the reaction chamber on the left side of the hydrogen storage tank 5 through the inlet 4, and then the inlet 4 is sealed; S2 The external electric heating device is activated to heat the hydrogen storage tank 5, so that the temperature of the aluminum-based hydride rises to the thermal decomposition initiation temperature, and a hydrogen release reaction occurs, accompanied by volume expansion; S3 The expanding reactant material applies an axial thrust to the porous ceramic disc 7, causing it to move along the inner wall of the hydrogen storage tank 5 towards the gas collection chamber; S4 The movement of the porous ceramic disc 7 is transmitted to the moving block 67 through the connecting block 69 and the push-pull rod 68, driving the support frame 63 to move synchronously, so that the roller 62 rolls along the reciprocating guide groove 61 on the outer surface of the hollow rubber roller 6; S5 The rolling path of the roller 62 in the reciprocating guide groove 61 is a non-linear trajectory, which converts the linear displacement of the support frame 63 into the rotational motion of the hollow rubber roller 6 around its axis; S6 The rotation of the hollow rubber roller 6 drives the flexible cleaning strip 91 fixed to its end to rotate synchronously, thereby driving the rotation. Ring 9 rotates around the axis of hydrogen storage tank 5; S7 The cleaning brush 92 on the flexible cleaning strip 91 inside ring 9 sweeps the surface of filter plate 85, and the cleaning scraper 93 scrapes away fine particles in the pores of filter plate 85 to prevent filter plate 85 from clogging; S8 As the porous ceramic disk 7 moves toward the gas collecting chamber, the moving block 67 slides along the slide rod 65, compressing the spring 66, so that the spring 66 accumulates elastic potential energy; S9 The hydrogen gas generated by the reaction passes through the porous ceramic disk 7 and filter plate 85 in sequence. The hydrogen is output to external hydrogen-using equipment via hydrogen outlet interface 3; S10 When hydrogen outlet interface 3 is opened, the internal pressure of hydrogen storage tank 5 gradually decreases to ambient pressure. At this time, spring 66 releases the stored elastic potential energy, pushing moving block 67 to move in the opposite direction along slide rod 65; S11 Moving block 67 drives porous ceramic disk 7 to reset to the initial position via push-pull rod 68, axially compacting the expanded and loose material after the reaction, restoring the effective volume of the reaction chamber, and preparing for the next hydrogen storage-release cycle.

[0044] In this embodiment, it should be specifically noted that the maximum axial movement of the porous ceramic disc 7 is limited by a limiting step or stop ring provided on the inner wall of the hydrogen storage tank 5, ensuring that its movement range does not exceed a predetermined proportion of the reaction chamber length, preventing excessive compression or disengagement from the mating area; the geometric parameters of the reciprocating guide groove 61 are configured such that when the porous ceramic disc 7 completes one maximum expected displacement, the hollow rubber roller 6 completes at least a 180° rotation angle to ensure effective cleaning coverage of the filter plate 85; the cross-shaped arrangement of the flexible cleaning strips 91 allows the two flexible cleaning strips 91 to alternately act on different areas of the filter plate 85 during the rotation of the hollow rubber roller 6, improving cleaning uniformity; the rotating pair structure between the rotating ring 9 and the hydrogen storage tank 5 ensures that its rotational resistance is minimized while maintaining structural sealing to prevent hydrogen leakage; the triangular fixing frame 64 is a rigid support, and its structure is configured as a hollow rubber... Roller 6 provides a stable rotational support point and a fixed reference for slide bar 65. Both slide bar 65 and slide bar 81 are surface polished to reduce the sliding friction resistance of moving block 67 and moving block 83, ensuring smooth linkage and response accuracy. In summary, this invention converts the volume expansion force generated during the thermal decomposition of aluminum-based hydrides into a rotational cleaning action on filter plate 85 via a mechanical linkage system composed of porous ceramic disc 7, push-pull rod 68, support frame 63, roller 62, and reciprocating guide groove 61. At the same time, spring 66 drives porous ceramic disc 7 to reset after hydrogen supply, realizing automatic compaction of reaction residues. This structure does not require an external power source, and the components complete the adaptive cleaning and reset functions through precise mechanical cooperation, significantly improving the reliability, safety, and maintenance convenience of the hydrogen storage device in long-term cyclic use.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aluminum-based hydride hydrogen storage device, comprising a housing (1), a protective square shell (2) disposed within the housing (1), and a hydrogen storage tank (5) disposed within the protective square shell (2), wherein the hydrogen storage tank (5) has an inlet (4) at one end and a hydrogen outlet (3) at the other end, characterized in that, Also includes: A porous ceramic disk (7) is slidably disposed inside the hydrogen storage tank (5) and divides it into a reaction chamber and a gas collection chamber; the outer edge of the porous ceramic disk (7) is slidably fitted with the inner wall of the hydrogen storage tank (5); A hollow rubber roller (6) is rotatably mounted inside the hydrogen storage tank (5) via a triangular fixing frame (64). The bottom of the triangular fixing frame (64) is fixedly connected to the hydrogen storage tank (5). The outer surface of the hollow rubber roller (6) is provided with a reciprocating guide groove (61). A linkage component is connected between the porous ceramic disk (7) and the support frame (63) to transmit the axial movement of the porous ceramic disk (7) to the support frame (63). The linkage component includes a push-pull rod (68), one end of which is hinged to the porous ceramic disc (7) via a connecting block (69), and the other end is hinged to a moving block (67) fixed to the bottom of the support frame (63). Roller (62) is mounted on the support frame (63) and embedded in the reciprocating guide groove (61); The filter plate (85) is disposed in the gas collecting chamber and close to the hydrogen outlet (3); A rotating ring (9) is rotatably disposed inside the hydrogen storage tank (5); A flexible cleaning strip (91) is fixedly connected to the end of the hollow rubber roller (6) at its center and connected to the inner diameter of the rotating ring (9) at both ends. A cleaning component is provided on the side of the flexible cleaning strip (91) facing the filter plate (85). The cleaning component includes a cleaning brush (92) and a cleaning scraper (93) disposed on the flexible cleaning strip (91). An elastic reset component is connected to the linkage assembly and is used to reset the porous ceramic disc (7) after it has been moved. The elastic reset component includes a slide rod (65) and a spring (66) sleeved on the slide rod (65). The moving block (67) is slidably mounted on the slide rod (65), and the spring (66) abuts against the moving block (67) and the triangular fixing frame (64). And a filter plate pressing component, disposed between the filter plate (85) and the inner wall of the hydrogen storage tank (5), for keeping the filter plate (85) in contact with the cleaning component; When the porous ceramic disc (7) moves axially under the expansion of the reactant, the linkage component drives the support frame (63) to move, causing the roller (62) to roll along the reciprocating guide groove (61), driving the hollow rubber roller (6) to rotate, and then the flexible cleaning strip (91) drives the rotating ring (9) and the cleaning component to rotate, cleaning the filter plate (85); The porous ceramic disc (7) has an embedded sliding column (71) fixed to the center of one side facing the gas collection chamber via a connecting block two (73). The other end of the embedded sliding column (71) is slidably and rotatably inserted into the inner hole of the hollow rubber roller (6) via an embedded disc (72).

2. The aluminum-based hydride hydrogen storage device according to claim 1, characterized in that, The flexible cleaning strip (91) has two strips arranged in a cross shape.

3. The aluminum-based hydride hydrogen storage device according to claim 1, characterized in that, A heat insulation structure is provided between the protective shell (2) and the outer shell (1), and between the protective shell (2) and the hydrogen storage tank (5).

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