Solid hydrogen storage device

Abstract

The invention discloses a solid hydrogen storage device which comprises a carrying box, a plurality of hydrogen storage tank mounting cavities and a plurality of hydrogen storage tank mounting cavities, the plurality of hydrogen storage tanks are respectively mounted in the hydrogen storage tank mounting cavities; a solid hydrogen storage structure is arranged in the hydrogen storage tank; the solid hydrogen storage structure comprises a heat conduction pipe, a plurality of heat conduction sheets and a plurality of solid hydrogen storage materials, the heat-conducting fins and the solid hydrogen storage material are sequentially and alternately stacked from top to bottom, and the heat-conducting pipe vertically penetrates through all the heat-conducting fins and the solid hydrogen storage material and circumferentially surrounds the heat-conducting fins and the solid hydrogen storage material in a snakelike shape; a plurality of through holes corresponding to each other are formed in the heat-conducting fin and the solid hydrogen storage material; and a heat-conducting medium inlet and a heat-conducting medium outlet of the heat-conducting pipe extend out of the hydrogen storage tank. The heat exchange efficiency of the solid hydrogen storage material can be improved, and then the hydrogen absorption and desorption efficiency of the solid hydrogen storage material is improved.

Description

Technical Field

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

[0002] Since hydrogen energy has high environmental performance, and compared with other traditional energy sources, it is easier to obtain and will not be exhausted, it is widely used as a new energy source. However, due to the poor stability of hydrogen, hydrogen is generally compressed into liquid hydrogen and stored in a storage tank, and then stored at low temperature. This storage method is not only cumbersome to operate, but also cannot guarantee the stability of hydrogen. Under the interference of external force collision, electric sparks, and static electricity, it is very easy to cause safety accidents. In order to overcome the above-mentioned defects, solid-state hydrogen storage devices have appeared. During storage, hydrogen is combined with magnesium-based hydrogen storage alloy materials to form a stable MH metal hydride, which can be maintained at room temperature; when hydrogen is needed, the metal hydride is heated to break the metal bond between MH, realize the hydrogen release function, and supply it to the hydrogen-using equipment, so that the safe storage and use of hydrogen can be achieved. However, when the existing solid-state hydrogen storage device is in use, the heat exchange efficiency between the magnesium-based hydrogen storage alloy material and the temperature control mechanism is not high, 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 carrier box, on which a plurality of hydrogen storage tank mounting cavities are arranged;

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

[0007] Among them, the solid-state hydrogen storage structure includes: a heat pipe and 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, 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 the 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 penetrate 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 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 sheet and the solid hydrogen storage material are 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 the end cover installation cavity is provided with an end cover; the end cover is in a circular ring shape, 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 arranged 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 from top to bottom, and surrounds the heat conducting plates and solid hydrogen storage materials in a serpentine shape. 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 conducting 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 is convenient for connecting 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 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 evenly and fully react with the hydrogen, thereby improving the hydrogen absorption rate.

[0022] Some additional features of the present application may be explained in the following description. Some additional features of the present application will be apparent to those skilled in the art by inspection of the following description and corresponding drawings or understanding of the production or operation of the embodiments. The features disclosed in the present application may be realized and achieved by practice or use of 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 numeral represents the same component.

[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 A magnified schematic diagram of center A.

[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 It 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-clamp cavity, 224-hydrogen output pipe, 225-air hole, 230-solid hydrogen storage structure, 231-solid hydrogen storage material, 232-heat conductive sheet, 233-heat conductive pipe, 234-heat conductive medium inlet, 235-heat conductive medium outlet, 236-through hole. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present 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 sequence. 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 here. 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, the process, method, system, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0033] In this application, if the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0034] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0035] In addition, in this application, the terms "installed", "set", "provided with", "connected", "connected", "socketed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present 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, which includes 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 installation cavities 110, and the hydrogen storage tank installation cavities 110 are distributed in an array. The hydrogen storage tanks 200 are respectively installed in the hydrogen storage tank installation cavities 110, that is, one hydrogen storage tank 200 is installed in one hydrogen storage tank installation cavity 110. By installing a plurality of hydrogen storage tanks 200 on one carrier box 100, transportation is facilitated.

[0039] like Figure 4 As shown, the hydrogen storage tank 200 includes a tank body 220 and a tank cover 210, which are connected together by a flange, and a sealing gasket can be arranged between the two to increase the sealing performance. The tank cover 210 is provided with a hydrogen inlet 211 and a hydrogen output pipe 224, and hydrogen can be introduced into the hydrogen storage tank 200 through the hydrogen inlet 211 during use.

[0040] In addition, if Figure 5 As shown, the tank body 220 includes an outer tank and an inner tank 222 disposed inside the outer tank. A sandwich cavity 223 is formed between the outer tank and the inner tank 222. The bottom of the inner tank 222 is connected to the sandwich cavity 223 through the air hole 225, and the hydrogen output pipe 224 is connected to the sandwich 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 unabsorbed 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 for recovery. When setting, a tee can be set on the hydrogen output pipe 224, and one output end of the tee is connected to the hydrogen inlet 211. The remaining unabsorbed 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 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 hydrogen storage structure 230 includes: a heat pipe 233, a plurality of heat conducting sheets 232, and a plurality of solid hydrogen storage materials 231. The heat conducting sheets 232 and the solid hydrogen storage materials 231 are both in the form of plates, and their shapes match the cross-sectional shape of the inner tank 22. For example, the cross-sectional shape of the inner tank 222 is circular, and the heat conducting sheets 232 and the solid hydrogen storage materials 231 are both in the form of circular plates, and their diameters match the inner diameter of the inner tank 222, so that the edges of the heat conducting sheets 232 and the solid hydrogen storage materials 231 can fit the inner wall of the inner tank 222. During setting, the heat conductive sheet 232 and the solid hydrogen storage material 231 are stacked alternately from top to bottom, that is, the heat conductive sheet 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 with a heat conductive sheet 232.

[0042] In addition, the heat conductive sheet 232 and the solid hydrogen storage material 231 are both provided with a plurality of corresponding through holes 236, that is, the positions and numbers of the through holes 236 on the heat conductive sheet 232 and the solid hydrogen storage material 231 correspond one to one, and the hydrogen flows through the heat conductive sheet 232 and the solid hydrogen storage material 231 in sequence from the through holes 236 on the heat conductive sheet 232 and the solid hydrogen storage material 231. During this process, the hydrogen reacts with the solid 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 from 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 vertically, and surrounds the heat conducting plates 232 and the solid hydrogen storage material 231 in a serpentine shape. Figure 6 As shown. In addition, the heat transfer medium inlet 234 and the 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 the heat transfer medium outlet 235 are respectively connected to an external temperature control device. The heat transfer medium inlet 234, the heat transfer medium outlet 235, the hydrogen inlet 211 and the hydrogen output pipe 224 are all facing one side of the hydrogen storage tank 200, which is convenient for the connection of external pipelines.

[0044] During the hydrogen absorption process, the solid hydrogen storage material 231 generates heat, and the temperature rise will affect the hydrogen absorption effect of the solid hydrogen storage material 231. Therefore, during the hydrogen absorption process, the external temperature control device passes a low-temperature medium into the heat pipe 233, and 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 to improve the hydrogen absorption effect. During the hydrogen release process, the solid hydrogen storage material 231 needs to be heated. At this time, the external temperature control device passes a high-temperature medium into the heat pipe 233, and 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, so that the solid hydrogen storage material 231 releases hydrogen, and the released hydrogen enters the clamping cavity 223, and is transported to the hydrogen-using device via the hydrogen output pipe 224 and the tee. During the hydrogen absorption process, close the valve of the tee flowing to the hydrogen-using device, and open the valve on the side of the hydrogen inlet 211. 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 sheets 232 and the solid hydrogen storage material 231 from top to bottom, and surrounds the heat conducting sheets 232 and the solid hydrogen storage material 231 in a serpentine shape. At the same time, the heat conducting sheets 232 and the solid hydrogen storage material 231 are alternately arranged so that the upper and lower surfaces of the solid hydrogen storage material 231 are in contact with a heat conducting sheet 232. The temperature on the heat pipe 233 can be transferred to the solid hydrogen storage material 231 through the heat conducting sheets 232, thereby improving the heat exchange efficiency, and further improving the efficiency of the solid hydrogen storage material 231 in absorbing and releasing hydrogen.

[0046] like Figure 5 As shown, a buffer cavity 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 cavity 212 and then evenly passes through the solid hydrogen storage material 231, so that the solid hydrogen storage material 231 can evenly and fully react with hydrogen to improve the hydrogen absorption rate. The solid hydrogen storage material 231 in this embodiment is made of a magnesium-based hydrogen storage alloy material.

[0047] As an optional implementation, Figure 2 As shown, the bottom of the tank body 220 is an arc bottom 221, and the tank cover 210 is conical. Correspondingly, 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 installation cavity 130 is provided with an end cover 120. The end cover 120 is threadedly connected to the cavity wall of the end cover installation cavity 130.

[0048] In addition, the end cover 120 is in a circular shape, 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 cooperates 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 exported 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] In addition, the above specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the present invention description and its drawings are illustrative and do not constitute a limitation of the claims. The protection scope 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) is provided with a plurality of hydrogen storage tank installation cavities (110); 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 arranged 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) penetrates all the heat conducting sheets (232) and the solid-state hydrogen storage materials (231) from top to bottom, 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).

2. The solid-state hydrogen storage device according to claim 1, characterized in that: 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).

3. The solid-state hydrogen storage device according to claim 2, characterized in that: The tank body (220) comprises 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 hydrogen output pipe (224) is connected to the cavity (223); the bottom of the inner tank (222) is connected to the cavity (223) through an air hole (225); and the solid hydrogen storage structure (230) is installed inside the inner tank (222).

4. The solid-state hydrogen storage device according to claim 3, characterized in that: A buffer chamber (212) is formed between the tank cover (210) and the inner tank (222).

5. The solid-state hydrogen storage device according to claim 3, characterized in that: The diameters of the heat conducting sheet (232) and the solid hydrogen storage material (231) both match the inner diameter of the inner tank (222).

6. The solid-state hydrogen storage device according to claim 2, 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 installation cavity (130) is provided with an end cover (120); the end cover (120) is in the shape of an annulus, 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).

7. The solid-state hydrogen storage device according to claim 6, characterized in that: The end cover (120) is threadedly connected to the cavity wall of the end cover installation cavity (130).

8. The solid-state hydrogen storage device according to claim 7, characterized in that: The end cover (120) is provided with an end cover handle (121).

9. The solid-state hydrogen storage device according to claim 2, characterized in that: The hydrogen storage tank installation cavities (110) are distributed in an array.

10. The solid-state hydrogen storage device according to claim 9, 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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