Solid hydrogen storage alloy filling structure

Abstract

The utility model discloses a solid hydrogen storage alloy filling structure which comprises a hydrogen storage container used for containing hydrogen storage alloy; the heat conduction graphite sheet is arranged between the inner wall of the hydrogen storage container and the aluminum shell; the aluminum packaging container is used for fixing the hydrogen storage alloy; the aluminum packaging container sealing edge is used for limiting the position of the top cover and inhibiting the material from expanding to prop the top cover open; the top cover is used for preventing the hydrogen storage powder from expanding and overflowing; the microporous filter membrane wraps the hydrogen storage alloy material pressed into the cake shape and is arranged in the aluminum packaging container; the hydrogen storage alloy is pressed into a cake shape so as to improve the hydrogen storage density; the central holes are reserved in the hydrogen storage material and the aluminum packaging container. Heat on the hydrogen storage container can be uniformly transferred through heat conduction of the graphite flakes, so that pulverization of materials caused by overlarge temperature difference is avoided, the heat conduction efficiency is improved, and the hydrogen absorption and desorption rate is increased.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hydrogen storage technical field, concretely relates to a solid hydrogen storage alloy filling structure. BACKGROUND

[0002] CN101636451A discloses a resin mixture and its manufacturing method, which fails to effectively improve the heat conduction performance or solve the alloy pulverization problem;CN101413624A discloses a metal hydride hydrogen storage device and its manufacturing method, which is filled by hydrogen storage material sheets with central holes, but leads to the filling rate of hydrogen storage material to decline, affecting the hydrogen storage capacity of the device, and the device manufacturing process is complex, and the production cost is high;CN102242861A discloses a hydrogen storage alloy tank, which sets a tubular heat exchanger to improve the heat exchange efficiency of the system, and fills the hydrogen storage alloy powder in the porous or fiber structure to avoid the hardening and stress concentration caused by the alloy pulverization and aggregation, but the porous or fiber structure has limited effect on heat transfer improvement, and the heat exchanger design is complex;CN202048351U discloses a hydrogen storage alloy tank, which is provided with a heat dissipation device in the form of honeycomb structure pressed and stacked by aluminum foil and foamed aluminum in the tank, and is provided with hydrogen storage alloy powder in the gap of the heat dissipation device, but the porous or fiber structure has limited effect on heat transfer improvement, and the heat exchanger design is complex;CN213177651U discloses a solid hydrogen storage tank, a plurality of hydrogen storage bed body elements are stacked in the tank body, each hydrogen storage bed body element comprises a hydrogen storage material layer, a heat conducting layer and a flexible wrapping layer, which can effectively improve the heat conduction performance of the hydrogen storage bed body and improve the migration of hydrogen storage material powder, but the hydrogen storage material powder still falls from the gap of the flexible wrapping layer during the hydrogen absorption and release process, resulting in powder accumulation. CONTENT OF THE UTILITY MODEL

[0003] The utility model solves the technical problems of overcoming the defects of the prior art, and provides a solid hydrogen storage alloy filling structure to solve the problems in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a solid hydrogen storage alloy filling structure, comprising:

[0005] A hydrogen storage container for containing hydrogen storage alloy;

[0006] A heat-conducting graphite sheet is arranged between the inner wall of the hydrogen storage container and the aluminum shell;

[0007] An aluminum packaging container for fixing the hydrogen storage alloy;

[0008] An aluminum packaging container edge for limiting the position of the top cover and preventing the material expansion from pushing the top cover away;

[0009] A top cover for preventing the hydrogen storage powder from expanding and overflowing.

[0010] The microporous filter film is wrapped around the hydrogen storage alloy material compressed into a cake shape, and is arranged in the aluminum packaging container to prevent the material from falling out of the aluminum container after pulverization;

[0011] The hydrogen storage alloy is compressed into a cake shape to improve the hydrogen storage density;

[0012] The center hole is provided with a center hole for the hydrogen storage material and the aluminum packaging container.

[0013] Preferably, the aluminum packaging container edge is folded to hold the top cover.

[0014] Preferably, the microporous filter film is tightly attached between the hydrogen storage alloy.

[0015] Preferably, the hydrogen storage alloy is wrapped by the microporous filter film to prevent the alloy from falling out after pulverization.

[0016] Preferably, the diameter of the center hole matches the center hole of the hydrogen storage alloy and the aluminum packaging container.

[0017] Preferably, the gap between the inner wall of the hydrogen storage container and the aluminum packaging container is filled with a heat-conducting graphite sheet.

[0018] Preferably, the hydrogen storage alloy is compressed into a cake shape, and the thickness is 5mm-20mm.

[0019] Preferably, the thickness of the heat-conducting graphite sheet is 0.1mm-2mm.

[0020] Compared with the prior art, the solid hydrogen storage alloy filling structure has the following beneficial effects:

[0021] The hydrogen storage alloy can effectively improve the pulverization problem of the hydrogen storage alloy, and improve the heat conduction performance of the system. The hydrogen storage alloy is pressed into a cake shape by a mold, and the hydrogen storage alloy is effectively wrapped by a filter film and an aluminum shell, and then stacked and arranged in the hydrogen storage tank. It can effectively prevent the material from being pulverized or displaced due to thermal expansion or external force, and the stress accumulation on the tank body caused by the volume expansion during the repeated hydrogen absorption and release process, and prevent the local accumulation of powder caused by the pulverization of the material. The graphite sheet conducts heat to uniformly transfer the heat on the hydrogen storage container, avoids the pulverization of the material caused by the large temperature difference, and improves the heat conduction efficiency and the hydrogen absorption and release rate. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings are used to provide a further understanding of the present application, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0023] Fig. 1The structure diagram provided by the utility model;

[0024] Fig. 2 The partial sectional view provided by the utility model;

[0025] Fig. 3 The partial sectional view provided by the utility model;

[0026] In the figure: 1, hydrogen storage container; 2, heat conduction graphite sheet; 3, aluminum packaging container; 4, aluminum packaging container edge sealing; 5, top cover; 6, microporous filter membrane; 7, hydrogen storage alloy; 8, center hole. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Embodiment one

[0029] Please refer to Figs. 1-3 The utility model provides a technical scheme: a solid hydrogen storage alloy filling structure, comprising: a hydrogen storage container 1 for containing hydrogen storage alloy; a heat conduction graphite sheet 2 arranged between the inner wall of the hydrogen storage container 1 and the aluminum shell for improving heat transfer efficiency; an aluminum packaging container 3 for fixing the hydrogen storage alloy and preventing pulverization; an aluminum packaging container edge sealing 4 for limiting the position of the top cover 5 and resisting the expansion of the material to push away the top cover 5; a top cover 5 for preventing the expansion of hydrogen storage powder from spilling out; a microporous filter membrane 6 for wrapping the hydrogen storage alloy material pressed into a cake shape and placed in the aluminum packaging container 3 to prevent the material from falling out of the aluminum container after pulverization; a hydrogen storage alloy 7 pressed into a cake shape to improve hydrogen storage density; and a center hole 8, the hydrogen storage material and the aluminum packaging container 3 both have the center hole 8 to maintain structural integrity.

[0030] Embodiment two

[0031] The heat-conducting graphite sheet 2 is in close contact with the inner wall of the hydrogen storage container 1 and the aluminum shell, so that efficient heat conduction is realized, the aluminum packaging container sealing edge 4 is folded to support the top cover 5, the microporous filter membrane 6 is tightly attached between the hydrogen storage alloy 7, so as to prevent the hydrogen storage alloy 7 from pulverizing and displacing in the hydrogen absorption and release process, the hydrogen storage alloy 7 is wrapped by the microporous filter membrane 6, so as to prevent the alloy from falling out after pulverizing, so as to reduce the direct contact between the hydrogen storage alloy 7 and the aluminum packaging container 3, prevent pulverization, the diameter of the center hole 8 matches the center hole 8 of the hydrogen storage alloy 7 and the aluminum packaging container 3, so as to ensure the gas flow, the gap between the inner wall of the hydrogen storage container 1 and the aluminum packaging container 3 is filled with the heat-conducting graphite sheet 2, the hydrogen storage alloy 7 is pressed into a cake shape, and the thickness is 5mm to 20mm, and the thickness of the heat-conducting graphite sheet 2 is 0.1mm to 2mm.

[0032] Example three

[0033] The hydrogen storage alloy 7 is pressed into a cake shape to improve the hydrogen storage density, the cake-shaped hydrogen storage alloy 7 is wrapped by the microporous filter membrane 6 to prevent pulverization and displacement, the wrapped hydrogen storage alloy 7 is placed in the aluminum packaging container 3, the center is left with a center hole 8 to maintain structural integrity, the heat-conducting graphite sheet 2 is arranged between the inner wall of the hydrogen storage container 1 and the aluminum shell to improve the heat transfer efficiency, the aluminum packaging container 3 has excellent heat conductivity, which helps to transfer heat from the hydrogen storage container 1 to the aluminum shell, reduces the local overheating phenomenon of the hydrogen storage alloy, reduces the risk of pulverization, the top cover 5 prevents the hydrogen powder from expanding and overflowing, the aluminum packaging container sealing edge 4 limits the position of the top cover 5 and fixes the aluminum packaging container 3, ensures the structural stability, and the aluminum packaging container 3 fixes the hydrogen storage alloy bed body and the flexible wrapped microporous filter membrane, prevents the material from being stressed on the tank body in the repeated hydrogen absorption and release process, the heat-conducting graphite sheet 2 quickly balances the temperature, avoids excessive thermal gradient, reduces the local overheating phenomenon of the hydrogen storage alloy, and reduces the risk of alloy pulverization.

[0034] The working principle and use process of the utility model: in use, prepare the hydrogen storage alloy 7, press the hydrogen storage alloy 7 into a cake shape to improve the hydrogen storage density, wrap the pressed cake-shaped hydrogen storage alloy 7 with the microporous filter membrane 6, then put into the aluminum packaging container 3, ensure that the center hole 8 is aligned, place the heat-conducting graphite sheet 2 between the inner wall of the hydrogen storage container 1 and the aluminum shell, ensure that the thickness of the heat-conducting graphite sheet 2 is appropriate to fill the gap between the inner wall of the hydrogen storage container 1 and the outer wall of the aluminum packaging container, the assembled hydrogen storage container 1 is used for hydrogen storage and hydrogen release operation, the improved heat conduction performance and structural stability are utilized to realize efficient hydrogen storage and release, the pulverization of the hydrogen storage alloy 7 and the sealing of the hydrogen storage container 1 are regularly checked to ensure long-term stable operation of the system.

[0035] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solid hydrogen storage alloy packing structure, characterized by comprising: It comprises: a hydrogen storage container (1) for containing hydrogen storage alloy; a heat-conducting graphite sheet (2) arranged between the inner wall of the hydrogen storage container (1) and the aluminum shell; an aluminum packaging container (3) for fixing the hydrogen storage alloy; an aluminum packaging container edge (4) for limiting the position of the top cover (5) and preventing the material expansion from pushing the top cover (5) away; a top cover (5) for preventing the hydrogen storage powder from expanding and overflowing; a microporous filter membrane (6) wrapped around the hydrogen storage alloy material pressed into a cake shape and arranged in the aluminum packaging container (3) to prevent the material from falling out of the aluminum container after pulverization; a hydrogen storage alloy (7) pressed into a cake shape to improve the hydrogen storage density; a central hole (8) with the hydrogen storage material and the aluminum packaging container (3) both having the central hole (8).

2. A solid hydrogen storage alloy packing structure according to claim 1, wherein: The aluminum packaging container edge (4) is folded to hold the top cover (5).

3. A solid hydrogen storage alloy packing structure according to claim 1, wherein: The microporous filter membrane (6) is tightly attached to the hydrogen storage alloy (7).

4. The solid hydrogen storage alloy loading structure of claim 1, wherein: The hydrogen storage alloy (7) is wrapped by the microporous filter membrane (6) to prevent the alloy from falling out after pulverization.

5. The solid hydrogen storage alloy loading structure of claim 1, wherein: The diameter of the central hole (8) matches the central hole (8) of the hydrogen storage alloy (7) and the aluminum packaging container (3).

6. The solid hydrogen storage alloy loading structure of claim 1, wherein: The gap between the inner wall of the hydrogen storage container (1) and the aluminum packaging container (3) is filled with the heat-conducting graphite sheet (2).

7. The solid hydrogen storage alloy loading structure of claim 1, wherein: The hydrogen storage alloy (7) is pressed into a cake shape with a thickness of 5mm-20mm.

8. The solid hydrogen storage alloy loading structure of claim 1, wherein: The thickness of the heat-conducting graphite sheet (2) is 0.1mm-2mm.

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