A solid-state hydrogen storage device

Abstract

The present invention discloses a solid-state hydrogen storage device, comprising: a carrying box provided with a plurality of hydrogen storage tank mounting cavities; a plurality of hydrogen storage tanks, respectively installed in the hydrogen storage tank mounting cavities; a solid-state hydrogen storage structure provided inside the hydrogen storage tank; wherein the solid-state hydrogen storage structure comprises: a heat pipe, a plurality of heat conducting plates, and a plurality of solid-state hydrogen storage materials; the heat conducting plates and solid-state hydrogen storage materials are alternately stacked from top to bottom, the heat conducting pipe passes through all of the heat conducting plates and solid-state hydrogen storage materials from top to bottom, and surrounds the heat conducting plates and solid-state hydrogen storage materials in a serpentine manner; the heat conducting plates and solid-state hydrogen storage materials are each provided with a plurality of mutually corresponding through holes, and the heat conducting medium inlet and heat conducting medium outlet of the heat conducting pipe both extend out of the hydrogen storage tank. The present invention can improve the heat exchange efficiency of the solid-state hydrogen storage material, thereby improving the efficiency of the solid-state hydrogen storage material in absorbing and releasing hydrogen.

Description

Technical Field

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

[0002] Because hydrogen energy has high environmental performance and is easier to obtain than other traditional energy sources and does not suffer from depletion problems, it has been widely used as a new energy source. However, due to the poor stability of hydrogen, it is generally compressed into liquid hydrogen and stored in storage tanks, and then stored at low temperatures. This storage method is not only cumbersome to operate, but also cannot guarantee the stability of hydrogen. It is very easy to cause safety accidents under the interference of external forces, electric sparks, and static electricity. To overcome the above-mentioned shortcomings, solid-state hydrogen storage devices have been developed. During storage, hydrogen reacts with magnesium-based hydrogen storage alloy materials to form stable metal hydrides (MH). This combination can be maintained at room temperature. When hydrogen is needed, the metal hydride is heated to break the metallic bond between MH and MH, realizing the hydrogen release function and supplying it to hydrogen-using equipment, thus achieving the safe storage and use of hydrogen. However, when used, existing solid-state hydrogen storage devices have low heat exchange efficiency between the magnesium-based hydrogen storage alloy material and the temperature control mechanism, which affects the hydrogen absorption and desorption efficiency of the magnesium-based hydrogen storage alloy material. Summary of the Invention

[0003] The purpose of the present invention is to solve the above problems and provide a solid-state hydrogen storage device, which can improve the heat exchange efficiency between the magnesium-based hydrogen storage alloy material and the temperature control mechanism, thereby improving the efficiency of hydrogen absorption and desorption of the magnesium-based hydrogen storage alloy material.

[0004] The purpose of the present invention is achieved through the following technical solution: A solid-state hydrogen storage device comprising:

[0005] A carrying box, on which a plurality of hydrogen storage tank mounting cavities are provided;

[0006] A plurality of hydrogen storage tanks are respectively installed in the hydrogen storage tank installation cavity; a solid hydrogen storage structure is provided inside the hydrogen storage tank;

[0007] Among them, the solid-state hydrogen storage structure includes: a heat pipe and several heat-conducting plates and several solid-state hydrogen storage materials; the heat-conducting plates and solid-state hydrogen storage materials are stacked alternately from top to bottom, and the heat-conducting pipe passes through all the heat-conducting plates and solid-state hydrogen storage materials from top to bottom, and surrounds the heat-conducting plates and solid-state hydrogen storage materials in a serpentine shape; the heat-conducting plates and solid-state hydrogen storage materials are each provided with a plurality of mutually corresponding through holes, and the heat-conducting medium inlet and heat-conducting medium outlet of the heat-conducting pipe both extend out of the hydrogen storage tank.

[0008] Furthermore, the hydrogen storage tank includes a tank body and a tank cover connected together by a flange; a hydrogen inlet and a hydrogen output pipe are provided on the tank cover, and the heat transfer medium inlet and the heat transfer medium outlet pass through the tank cover and extend out of the hydrogen storage tank.

[0009] The tank body includes an outer tank and an inner tank arranged inside the outer tank; a cavity is formed between the outer tank and the inner tank, the hydrogen output pipe is connected to the cavity, the bottom of the inner tank is connected to the cavity through an air hole, and the solid-state hydrogen storage structure is installed inside the inner tank.

[0010] A buffer chamber is formed between the tank cover and the inner tank.

[0011] The diameters of the heat conducting plate and the solid hydrogen storage material are both matched with the inner diameter of the inner tank.

[0012] The bottom of the tank body is an arc bottom, and the tank cover is conical; the bottom of the hydrogen storage tank installation cavity matches the arc bottom, and the entrance of the hydrogen storage tank installation cavity is provided with an end cover installation cavity coaxial with the hydrogen storage tank installation cavity, and an end cover is provided on the end cover installation cavity; the end cover is annular, and its inner diameter is smaller than the diameter of the tank body, so that when the end cover is installed on the end cover installation cavity, it can rest on the conical surface of the tank cover.

[0013] The end cover is threadedly connected to the cavity wall of the end cover installation cavity.

[0014] An end cover handle is provided on the end cover.

[0015] The hydrogen storage tank installation cavities are distributed in an array.

[0016] The hydrogen inlets, hydrogen output pipes, heat transfer medium inlets and heat transfer medium outlets of all the hydrogen storage tanks in the same row or column are connected to each other through pipelines.

[0017] Compared with the prior art, this application has the following beneficial effects:

[0018] (1) The heat pipe of the present invention passes through all the heat conducting plates and solid hydrogen storage materials in a serpentine shape and surrounds the heat conducting plates and solid hydrogen storage materials in a circumferential direction. At the same time, the heat conducting plates and solid hydrogen storage materials are arranged alternately, that is, the upper and lower surfaces of the solid hydrogen storage material are in contact with a heat conducting plate, and the temperature on the heat pipe can be transferred to the solid hydrogen storage material through the heat conducting plates, thereby improving the heat exchange efficiency and further improving the efficiency of the solid hydrogen storage material in absorbing and releasing hydrogen.

[0019] (2) The present invention provides a cavity in the hydrogen storage tank, and the hydrogen that is not absorbed or released can be returned to the top of the hydrogen storage tank through the cavity, which facilitates the connection of external pipelines.

[0020] (3) The present invention fixes the two ends of the hydrogen storage tank through the arc bottom and end cover of the hydrogen storage tank installation cavity to prevent the hydrogen storage tank from falling out of the carrying box due to vibration and other reasons during transportation and use.

[0021] (4) A buffer cavity is formed between the tank cover and the inner tank of the present invention. After hydrogen enters the interior of the hydrogen storage tank, it fills the buffer cavity and evenly passes through the solid hydrogen storage material, so that the solid hydrogen storage material can react with hydrogen evenly and fully, thereby improving the hydrogen absorption rate.

[0022] Some additional features of the present application may be described in the following description. Some additional features of the present application will be apparent to those skilled in the art from an inspection of the following description and accompanying drawings, or from a thorough understanding of the production or operation of the embodiments. The features disclosed in this application may be realized and achieved through the practice or use of the various methods, means, and combinations of the specific embodiments described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The exemplary embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation of the present application. In each figure, the same reference numerals represent the same components.

[0024] Figure 1 It is a structural diagram of the present invention.

[0025] Figure 2 It is a cross-sectional view of the present invention.

[0026] Figure 3 for Figure 1 Enlarged schematic diagram of point A in the middle.

[0027] Figure 4 It is a structural diagram of the hydrogen storage tank of the present invention.

[0028] Figure 5 It is a cross-sectional view of the hydrogen storage tank of the present invention.

[0029] Figure 6 This is a structural diagram of the solid-state hydrogen storage structure of the present invention.

[0030] The figure marks in the above drawings are: 100-carrying box, 110-hydrogen storage tank installation cavity, 120-end cover, 121-end cover handle, 130-end cover installation cavity, 200-hydrogen storage tank, 210-tank cover, 211-hydrogen inlet, 212-buffer cavity, 220-tank body, 221-arc bottom, 222-inner tank, 223-clamping cavity, 224-hydrogen output pipe, 225-air hole, 230-solid-state hydrogen storage structure, 231-solid-state hydrogen storage material, 232-heat conducting plate, 233-heat conducting pipe, 234-heat conducting medium inlet, 235-heat conducting medium outlet, 236-through hole. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0032] It should be noted that, if the description and claims of the present application and the above-mentioned drawings relate to the terms "first", "second", etc., they are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein. In addition, if the terms "including" and "having" and any of their variations are involved, it is intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] In this application, when terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inside," "outside," "center," "vertical," "horizontal," "transverse," and "longitudinal" are used, the orientations or positional relationships they indicate are based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0034] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0035] Furthermore, in this application, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0036] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] Example

[0038] like Figure 1 As shown, this embodiment discloses a solid-state hydrogen storage device comprising a carrier box 100 and a plurality of hydrogen storage tanks 200. The carrier box 100 is provided with a plurality of hydrogen storage tank mounting cavities 110 arranged in an array. The hydrogen storage tanks 200 are mounted in each of the hydrogen storage tank mounting cavities 110, with one hydrogen storage tank 200 mounted in each hydrogen storage tank mounting cavity 110. Mounting multiple hydrogen storage tanks 200 in a single carrier box 100 facilitates transportation.

[0039] like Figure 4 As shown, hydrogen storage tank 200 includes a tank body 220 and a tank lid 210. Tank body 220 and tank lid 210 are connected together by a flange, and a sealing gasket may be provided between the two to enhance sealing. Tank lid 210 is provided with a hydrogen inlet 211 and a hydrogen outlet pipe 224. During use, hydrogen can be introduced into hydrogen storage tank 200 through hydrogen inlet 211.

[0040] In addition, if Figure 5 As shown, the tank body 220 includes an outer tank and an inner tank 222 arranged inside the outer tank. A cavity 223 is formed between the outer tank and the inner tank 222. The bottom of the inner tank 222 is connected to the cavity 223 through an air hole 225, and the hydrogen output pipe 224 is connected to the cavity 223. A solid hydrogen storage structure 230 is installed inside the inner tank 222. When in use, hydrogen is filled into the inner tank 222 through the hydrogen inlet 211. The hydrogen reacts with the solid hydrogen storage structure 230 and is adsorbed. The remaining unadsorbed hydrogen enters the cavity 223 from the air hole 225, flows along the cavity 223 to the top of the hydrogen storage tank 200, and is finally discharged from the hydrogen output pipe 224 for recovery. When setting, a tee can be set on the hydrogen output pipe 224, one output end of the tee is connected to the hydrogen inlet 211, and the remaining unadsorbed hydrogen can flow back to the hydrogen inlet 211 and re-enter the hydrogen storage tank 200 to react again. The other output end of the three-way connection is connected to the hydrogen-using equipment. A valve can also be provided on the hydrogen inlet 211.

[0041] like Figure 6As shown, the solid-state hydrogen storage structure 230 includes a heat pipe 233, a plurality of heat conducting sheets 232, and a plurality of solid-state hydrogen storage materials 231. The heat conducting sheets 232 and the solid-state hydrogen storage materials 231 are both plate-shaped, and their shapes match the cross-sectional shape of the inner tank 22. For example, if the cross-section of the inner tank 222 is circular, the heat conducting sheets 232 and the solid-state hydrogen storage materials 231 are both circular plate-shaped structures, and the diameters of the heat conducting sheets 232 and the solid-state hydrogen storage materials 231 match the inner diameter of the inner tank 222, so that the edges of the heat conducting sheets 232 and the solid-state hydrogen storage materials 231 can fit against the inner wall of the inner tank 222. During the setting, the heat conducting plate 232 and the solid hydrogen storage material 231 are stacked alternately from top to bottom, that is, the heat conducting plate 232 and the solid hydrogen storage material 231 are stacked alternately from one end of the hydrogen inlet 211 of the hydrogen storage tank 200 to the other end thereof, so that both sides of the solid hydrogen storage material 231 can contact a heat conducting plate 232.

[0042] In addition, the heat conducting plate 232 and the solid-state hydrogen storage material 231 are both provided with a number of corresponding through holes 236, that is, the positions and numbers of the through holes 236 on the heat conducting plate 232 and the solid-state hydrogen storage material 231 correspond one to one, and hydrogen flows through the heat conducting plate 232 and the solid-state hydrogen storage material 231 in turn from the through holes 236 on the heat conducting plate 232 and the solid-state hydrogen storage material 231. During this process, the hydrogen reacts with the solid-state hydrogen storage material 231 and is absorbed, and the unabsorbed hydrogen flows to the bottom of the inner tank 222, enters the clamping cavity 223 through the air hole 225, and finally flows back to the hydrogen inlet 211.

[0043] The heat pipe 233 passes through all the heat conducting plates 232 and the solid hydrogen storage material 231 in a serpentine shape and surrounds the heat conducting plates 232 and the solid hydrogen storage material 231. Figure 6 As shown. Furthermore, the heat transfer medium inlet 234 and heat transfer medium outlet 235 of the heat transfer pipe 233 both pass through the tank cover 210 and extend out of the hydrogen storage tank 200. The heat transfer medium inlet 234 and heat transfer medium outlet 235 are each connected to an external temperature control device. The heat transfer medium inlet 234, heat transfer medium outlet 235, hydrogen inlet 211, and hydrogen output pipe 224 all face one side of the hydrogen storage tank 200, facilitating the connection of external piping.

[0044] During the hydrogen absorption process, the solid hydrogen storage material 231 generates heat, and this increased temperature affects the hydrogen absorption efficiency of the solid hydrogen storage material 231. Therefore, during the hydrogen absorption process, an external temperature control device introduces a low-temperature medium into the heat pipe 233. The temperature is transferred from the heat pipe 233 to the heat conductive sheet 232, and then from the heat conductive sheet 232 to the solid hydrogen storage material 231, thereby cooling the solid hydrogen storage material 231 and improving the hydrogen absorption efficiency. During the hydrogen release process, the solid hydrogen storage material 231 needs to be heated. At this time, the external temperature control device introduces a high-temperature medium into the heat pipe 233. The temperature is transferred to the solid hydrogen storage material 231 after passing through the heat pipe 233 and the heat conductive sheet 232, thereby heating the solid hydrogen storage material 231 and causing it to release hydrogen. The released hydrogen enters the clamping cavity 223 and is transported to the hydrogen-consuming device via the hydrogen output pipe 224 and the tee. During the hydrogen absorption process, the valve of the tee flowing to the hydrogen-consuming device is closed, and the valve on the side flowing to the hydrogen inlet 211 is opened. When releasing hydrogen, close the three-way valve on the side of the hydrogen inlet 211 and open the valve on the side of the hydrogen-using equipment.

[0045] The heat pipe 233 of the present invention passes through all the heat conducting plates 232 and the solid hydrogen storage material 231 from top to bottom, and surrounds the heat conducting plates 232 and the solid hydrogen storage material 231 in a serpentine shape. At the same time, the heat conducting plates 232 and the solid hydrogen storage material 231 are arranged alternately, so that the upper and lower surfaces of the solid hydrogen storage material 231 are in contact with a heat conducting plate 232. The temperature on the heat pipe 233 can be transferred to the solid hydrogen storage material 231 through the heat conducting plates 232, thereby improving the heat exchange efficiency and thereby improving the efficiency of the solid hydrogen storage material 231 in absorbing and releasing hydrogen.

[0046] like Figure 5 As shown, a buffer chamber 212 is formed between the tank cover 210 and the inner tank 222. After hydrogen enters the hydrogen storage tank 200, it fills the buffer chamber 212 and then evenly passes through the solid hydrogen storage material 231, allowing the solid hydrogen storage material 231 to react evenly and fully with the hydrogen, thereby improving the hydrogen absorption rate. In this embodiment, the solid hydrogen storage material 231 is made of a magnesium-based hydrogen storage alloy.

[0047] As an optional implementation, such as Figure 2 As shown, the bottom of the tank body 220 is a circular bottom 221, and the tank cover 210 is conical. Accordingly, the bottom of the hydrogen tank mounting cavity 110 matches the circular bottom 221. The entrance of the hydrogen tank mounting cavity 110 is provided with an end cap mounting cavity 130 coaxial with the hydrogen tank mounting cavity 110. The end cap 120 is mounted on the end cap mounting cavity 130. The end cap 120 is threadedly connected to the cavity wall of the end cap mounting cavity 130.

[0048] In addition, the end cover 120 is annular, and its inner diameter is smaller than the diameter of the tank body 220. After the tank body 220 is installed into the hydrogen storage tank installation cavity 110, the bottom of the tank body 220 is matched with the bottom of the hydrogen storage tank installation cavity 110, and then the end cover 120 is inserted from the top of the tank body 220 and screwed on the hydrogen storage tank installation cavity 110. At this time, the end cover 120 is attached to the conical surface of the tank cover 210 to position the tank body 220 to prevent the hydrogen storage tank 200 from falling out of the carrying box 100 due to vibration and other reasons during transportation and use.

[0049] The end cover 120 is provided with an end cover handle 121 to facilitate the rotation of the end cover 120. Figure 3 shown.

[0050] As an optional implementation method, the hydrogen inlets 211, the hydrogen output pipes 224, the heat transfer medium inlets 234, and the heat transfer medium outlets 235 of all hydrogen storage tanks 200 in the same row or column are interconnected by pipelines. In this way, hydrogen can be conveniently supplied to all hydrogen storage tanks 200 through one pipeline, and the released hydrogen can also be discharged through one pipeline.

[0051] It should be noted that all features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0052] Furthermore, the above-described specific embodiments are merely illustrative. Persons skilled in the art may devise various solutions based on the disclosure of the present invention, and such solutions fall within the scope of the present invention and are intended to be protected by the present invention. Persons skilled in the art should understand that the present description and drawings are intended to be illustrative and not to limit the scope of the claims. The scope of protection of the present invention is defined by the claims and their equivalents.

Claims

1. A solid-state hydrogen storage device, characterized in that: include: A carrying box (100) having a plurality of hydrogen storage tank mounting cavities (110) provided thereon; A plurality of hydrogen storage tanks (200) are respectively installed in the hydrogen storage tank installation cavity (110); a solid hydrogen storage structure (230) is provided inside the hydrogen storage tank (200); The solid-state hydrogen storage structure (230) comprises: a heat conducting pipe (233), a plurality of heat conducting sheets (232), and a plurality of solid-state hydrogen storage materials (231); the heat conducting sheets (232) and the solid-state hydrogen storage materials (231) are stacked alternately from top to bottom, the heat conducting pipe (233) passes through all the heat conducting sheets (232) and the solid-state hydrogen storage materials (231) vertically, and surrounds the heat conducting sheets (232) and the solid-state hydrogen storage materials (231) in a serpentine shape; the heat conducting sheets (232) and the solid-state hydrogen storage materials (231) are both provided with a plurality of mutually corresponding through holes (236), and the heat conducting medium inlet (234) and the heat conducting medium outlet (235) of the heat conducting pipe (233) both extend out of the hydrogen storage tank (200); The hydrogen storage tank (200) comprises a tank body (220) and a tank cover (210) connected together by a flange; a hydrogen inlet (211) and a hydrogen output pipe (224) are provided on the tank cover (210); and the heat transfer medium inlet (234) and the heat transfer medium outlet (235) penetrate the tank cover (210) and extend out of the hydrogen storage tank (200); The tank body (220) includes an outer tank and an inner tank (222) arranged inside the outer tank; a sandwich cavity (223) is formed between the outer tank and the inner tank (222); the hydrogen output pipe (224) is in communication with the sandwich cavity (223); the bottom of the inner tank (222) is in communication with the sandwich cavity (223) through an air hole (225); the solid hydrogen storage structure (230) is installed inside the inner tank (222); hydrogen is filled into the inner tank (222) through a hydrogen inlet (211); the hydrogen reacts with the solid hydrogen storage structure (230) and is adsorbed; the remaining unadsorbed hydrogen enters the sandwich cavity (223) from the air hole (225), flows along the sandwich cavity (223) to the top of the hydrogen storage tank (200), and is finally discharged from the hydrogen output pipe (224) and recovered; A buffer cavity (212) is formed between the tank cover (210) and the inner tank (222). After hydrogen enters the interior of the hydrogen storage tank (200), it fills the buffer cavity (212) and then evenly passes through the solid hydrogen storage material (231).

2. The solid-state hydrogen storage device according to claim 1, characterized in that: The diameters of the heat conducting plate (232) and the solid hydrogen storage material (231) both match the inner diameter of the inner tank (222).

3. The solid-state hydrogen storage device according to claim 1, characterized in that: The bottom of the tank body (220) is in the shape of an arc bottom (221), and the tank cover (210) is in the shape of a cone; the bottom of the hydrogen storage tank installation cavity (110) matches the arc bottom (221), and the entrance of the hydrogen storage tank installation cavity (110) is provided with an end cover installation cavity (130) coaxial with the hydrogen storage tank installation cavity (110), and the end cover (120) is provided on the end cover installation cavity (130); the end cover (120) is in the shape of a ring, and its inner diameter is smaller than the diameter of the tank body (220), so that when the end cover (120) is installed on the end cover installation cavity (130), it can abut against the conical surface of the tank cover (210).

4. The solid-state hydrogen storage device according to claim 3, characterized in that: The end cover (120) is threadedly connected to the cavity wall of the end cover installation cavity (130).

5. The solid-state hydrogen storage device according to claim 4, characterized in that: An end cover handle (121) is provided on the end cover (120).

6. The solid-state hydrogen storage device according to claim 1, characterized in that: The hydrogen storage tank installation cavities (110) are distributed in an array.

7. The solid-state hydrogen storage device according to claim 6, characterized in that: The hydrogen inlets (211), the hydrogen output pipes (224), the heat transfer medium inlets (234), and the heat transfer medium outlets (235) of all the hydrogen storage tanks (200) in the same row or column are interconnected via pipelines.

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