Solid hydrogen storage device

Abstract

The embodiment of the invention provides a solid hydrogen storage device. The solid hydrogen storage device comprises a hydrogen storage tank, a hydrogen conveying pipe, a plurality of supporting structures, a surface overflow structure and a heat exchange fluid conveying pipeline. Two ends of the hydrogen conveying pipeline are respectively communicated with the hydrogen storage tank body and the hydrogen source; the multiple supporting structures are sequentially stacked in the hydrogen storage tank body, and a containing space used for containing the hydrogen storage alloy is formed between every two adjacent supporting structures; the surface overflow structure is arranged on the outer surface of the hydrogen storage tank body; the two ends of the heat exchange fluid conveying pipeline communicate with the surface overflow structure and a heat exchange fluid source correspondingly. When the hydrogen storage tank body is used for storing and discharging hydrogen, corresponding heat exchange fluid flows through the surface overflow structure, so that wall-hanging film-shaped coating flow flowing downwards is formed on the outer surface of the hydrogen storage tank body, and the hydrogen storage tank body is cooled or heated. The solid hydrogen storage device is simple in structure, low in manufacturing cost and long in service life, the number of the hydrogen storage tank bodies can be freely combined, the hydrogen storage tank bodies can be freely combined in or separated out at any time, and the hydrogen storage and discharge requirements of large-flow change are met.

Description

Technical Field

[0001] This disclosure pertains to the field of hydrogen storage equipment technology, specifically relating to a solid-state hydrogen storage device. Background Technology

[0002] With the reduction of consumption of fossil fuels such as coal, oil, and natural gas, and the decrease in environmental pollution, hydrogen energy, as an readily available, pure, green, and clean energy source, is attracting increasing attention. However, there are still many technical issues to be resolved regarding the safe, efficient, and economical application of hydrogen energy, which is gradually becoming a new focus of attention.

[0003] Solid-state hydrogen storage alloys avoid the high-pressure hazards of hydrogen storage and are currently a feasible technology in use. On the one hand, further research and development of high-performance hydrogen storage media is of great significance to the development of this technology. On the other hand, developing safe, low-cost, easy-to-operate, long-life, and economically efficient hydrogen storage structures and devices is of even greater significance.

[0004] Currently, most mainstream solid-state hydrogen storage containers have internal structures for enhanced cooling or heating to quickly remove the heat generated during solid-state hydrogen storage, or to heat and quickly release the stored hydrogen, thereby improving hydrogen storage and release efficiency.

[0005] Because cooling or heating is required within the volume of the hydrogen storage alloy, most existing hydrogen storage containers are constructed as single-flow heat exchangers or fixed-bed structures filled with various heat exchange conduits. These structures result in complex and difficult-to-manufacture solid-state hydrogen storage devices, leading to high costs and difficulties in loading and unloading the hydrogen storage alloy. An even more serious problem is that the constructed heat exchange pipes or jacketed shells contain many dead zones and are clogged with impurities. Prolonged immersion in the cooling and heating fluids makes them highly susceptible to corrosion and damage, shortening the device's lifespan and potentially causing accidents.

[0006] To address the aforementioned issues, it is necessary to propose a well-designed solid-state hydrogen storage device that effectively solves these problems. Summary of the Invention

[0007] The present disclosure aims to at least solve one of the technical problems existing in the prior art and to provide a solid hydrogen storage device.

[0008] This disclosure provides a solid-state hydrogen storage device, comprising:

[0009] Hydrogen storage tank;

[0010] A hydrogen delivery pipeline, wherein the first end of the hydrogen delivery pipeline is connected to the hydrogen storage tank, and the second end of the hydrogen delivery pipeline is used to connect to a hydrogen source;

[0011] Multiple support structures are stacked sequentially inside the hydrogen storage tank, wherein a space for accommodating the hydrogen storage alloy is formed between two adjacent support structures.

[0012] A surface overflow structure is provided on the outer surface of the hydrogen storage tank;

[0013] A heat exchange fluid transport pipe, wherein a first end of the heat exchange fluid transport pipe is connected to the surface overflow structure, and a second end of the heat exchange fluid pipe is used to connect to a heat exchange fluid source; wherein...

[0014] When hydrogen is stored or released in the hydrogen storage tank, the corresponding heat exchange fluid flows through the surface overflow structure to form a downward-flowing, wall-mounted film-like coating flow on the outer surface of the hydrogen storage tank, thereby achieving heat exchange with the hydrogen storage tank.

[0015] Optionally, the surface overflow structure includes multiple spiral groove plates;

[0016] The plurality of spiral groove plates are alternately wound around the outer surface of the hydrogen storage tank along the length of the hydrogen storage tank.

[0017] Optionally, the circumferential wrap angle of each of the spiral groove plates is greater than 180 degrees and less than 270 degrees.

[0018] Optionally, the spiral groove plate includes an outer edge surface, an inclined surface, and multiple through holes;

[0019] The outer edge facade is arranged along the length of the hydrogen storage tank;

[0020] The first end of the inclined surface is connected to the outer edge facade, and the second end of the inclined surface abuts against the outer surface of the hydrogen storage tank. The inclined surface is inclined in the direction of the flow of the heat exchange fluid.

[0021] Multiple through holes are spaced apart and disposed at the end of the inclined surface near the hydrogen storage tank, and some of the through holes are in contact with the outer surface of the hydrogen storage tank.

[0022] Optionally, a positioning magnet is provided at the first end of the heat exchange fluid conveying pipe;

[0023] The positioning magnet is used to magnetically attach the first end of the heat exchange fluid conveying pipe to the outer surface of the hydrogen storage tank, so as to connect the heat exchange fluid conveying pipe to the topmost spiral groove plate.

[0024] Optionally, the support structure includes a support base, a hydrogen flow pipe, and multiple support columns;

[0025] The first end of the hydrogen guide tube passes through the central region of the support base and is flush with the bottom surface of the support base.

[0026] Multiple support columns are spaced apart and arranged at intervals along the edge region of the support base; wherein,

[0027] The support base of the upper support structure abuts against a plurality of support columns of the adjacent lower support structure to form the accommodating space.

[0028] Optionally, the height of the plurality of support columns in each of the support structures is greater than the height of the hydrogen flow pipe;

[0029] The height of the hydrogen storage alloy filling the accommodating space is less than the height of the hydrogen flow pipe.

[0030] Optionally, the second end of the hydrogen guide tube is provided with an internal thread.

[0031] Optionally, the number of hydrogen storage tanks is multiple, and the device further includes a positioning bracket;

[0032] The positioning bracket positions the multiple hydrogen storage tanks in columns and rows.

[0033] Optionally, the hydrogen delivery pipeline includes a main hydrogen pipeline and multiple branch hydrogen pipelines connected to the main hydrogen pipeline, wherein each branch hydrogen pipeline is connected to its corresponding hydrogen storage tank.

[0034] The heat exchange fluid transport pipeline includes a main heat exchange fluid pipeline and a plurality of branch heat exchange fluid pipelines connected to the main heat exchange fluid pipeline, wherein each branch heat exchange fluid pipeline is connected to its corresponding surface overflow structure.

[0035] The solid-state hydrogen storage device of this disclosure, through a surface overflow structure on the outer surface of the hydrogen storage tank, allows the heat exchange fluid in the heat exchange fluid delivery pipeline to flow through the surface overflow structure under heavy load, guiding the overflow onto the tank surface and then forming a film-like coating that flows downwards to cool or heat the hydrogen storage tank before it is put into operation. This improves heat exchange efficiency and reduces the circulation flow rate of the cooling and heating fluids. It also significantly reduces the complexity of the heat exchange structure, lowers manufacturing costs, avoids the stagnation failure and corrosion problems caused by long-term immersion in existing heat exchange structures, and greatly extends the service life of the hydrogen storage tank. In addition to the corrosion protection of the outer shell of the hydrogen storage tank, the hydrogen storage tank can be kept in a completely dry state when not in operation or under low load, thereby eliminating tank corrosion.

[0036] The solid-state hydrogen storage device of this disclosure uses a hydrogen storage tank for storing and releasing hydrogen. The hydrogen storage tank is vertically installed and has a large length-to-diameter ratio to reduce the footprint and the radial heat transfer distance of the hydrogen storage alloy inside the tank, thereby improving heat exchange efficiency. By stacking multiple support structures sequentially inside the hydrogen storage tank, and forming a accommodating space for accommodating the hydrogen storage alloy between two adjacent support structures, each accommodating space constitutes an independent hydrogen storage alloy segment. The upper part of the hydrogen storage alloy in each segment has an expansion gap, which solves the problems of expansion space and gravity compaction of the hydrogen storage alloy medium, and increases the safety of the hydrogen storage tank. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of a solid hydrogen storage device according to one embodiment of the present disclosure;

[0038] Figure 2 This is a schematic diagram of the structure of a spiral groove plate according to another embodiment of this disclosure;

[0039] Figure 3 This is a schematic diagram of the support structure of another embodiment of the present disclosure. Detailed Implementation

[0040] To enable those skilled in the art to better understand the technical solutions of the embodiments of this disclosure, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0041] like Figure 1 and Figure 2 As shown, this embodiment of the present disclosure provides a solid hydrogen storage device 100, including a hydrogen storage tank 110, a hydrogen conveying pipeline 120, multiple support structures 130, a surface overflow structure 140, and a heat exchange fluid conveying pipeline 150.

[0042] In this embodiment, the hydrogen storage tank 110 is an elongated cylindrical shape with a sealed bottom. The top of the hydrogen storage tank 110 is provided with a shell flange 111, a top cover flange 112, and a bolt assembly 113. The shell flange 111 and the top cover flange 112 are sealed by gaskets. The bolt assembly 113 is tightened and loosened to close and open the top of the hydrogen storage tank 110 to allow for the loading and unloading of hydrogen storage alloy packing material inside the hydrogen storage tank 110.

[0043] In this embodiment, the hydrogen storage tank 110 is vertically installed and has a large length-to-diameter ratio to reduce the footprint and the radial heat transfer distance of the hydrogen storage alloy inside the tank, thereby improving heat exchange efficiency. The specific dimensions of the hydrogen storage tank 110 are not specifically limited and can be selected according to actual needs.

[0044] The first end of the hydrogen delivery pipeline 120 is connected to the hydrogen storage tank 110, and the second end of the hydrogen delivery pipeline 120 is used to connect to a hydrogen source. The hydrogen source can be a tank that stores hydrogen.

[0045] In this embodiment, during hydrogen storage, hydrogen from the hydrogen source is transported to the hydrogen storage tank 110 via the hydrogen delivery pipeline 120 and stored using a hydrogen storage alloy; during hydrogen release, hydrogen released from the hydrogen storage alloy in the hydrogen storage tank 110 is transported back to the hydrogen source via the hydrogen delivery pipeline 120.

[0046] Multiple support structures 130 are stacked sequentially within the hydrogen storage tank 110, with a accommodating space between adjacent support structures 130 for accommodating the hydrogen storage alloy. The hydrogen storage alloy enables hydrogen storage or release.

[0047] A surface overflow structure 140 is disposed on the outer surface of the hydrogen storage tank 110. The first end of a heat exchange fluid delivery pipe 150 is connected to the surface overflow structure 140, and the second end of the heat exchange fluid delivery pipe 150 is connected to a heat exchange fluid source. The heat exchange fluid source can be either a cold fluid or a hot fluid, and the type of heat exchange fluid can be selected according to the hydrogen storage and release processes. There are no specific limitations on the specific types of cold and hot fluids; they can be selected according to actual needs.

[0048] During the storage and release of hydrogen in the hydrogen storage tank 110, the corresponding heat exchange fluid flows through the surface overflow structure 140 to form a downward-flowing, wall-mounted film-like coating flow on the outer surface of the hydrogen storage tank 110, thereby achieving heat exchange with the hydrogen storage tank 110.

[0049] Specifically, during hydrogen storage, hydrogen gas is transported to the hydrogen storage tank 110 through the hydrogen delivery pipeline 120. The hydrogen storage alloy inside the hydrogen storage tank 110 absorbs and stores the hydrogen gas, generating heat. The generated heat is radially transferred to the outer shell of the hydrogen storage tank 110. Cold fluid is transported to the surface overflow structure 140 through the heat exchange fluid delivery pipeline 150. When the cold fluid flows through the surface overflow structure 140, it forms a downward-flowing, wall-mounted film-like coating flow on the outer surface of the hydrogen storage tank 110, thereby better cooling the outer shell of the hydrogen storage tank 110.

[0050] During hydrogen release, the hot fluid is transported to the surface overflow structure 140 through the heat exchange fluid transport pipe 150. When the hot fluid flows through the surface overflow structure 140, it forms a downward-flowing, hanging film-like coating flow on the outer surface of the hydrogen storage tank 110. The heat generated by the hot fluid on the outer shell of the hydrogen storage tank 110 is radially transferred to the hydrogen storage alloy inside the hydrogen storage tank 110. The hydrogen storage alloy decomposes hydrogen gas when heated, and the decomposed hydrogen gas is transported to the hydrogen source through the hydrogen transport pipe 120.

[0051] The solid-state hydrogen storage device of this disclosure, through a surface overflow structure on the outer surface of the hydrogen storage tank, allows the heat exchange fluid in the heat exchange fluid delivery pipeline to flow through the surface overflow structure under heavy load, guiding the overflow onto the tank surface and then forming a film-like coating that flows downwards to cool or heat the hydrogen storage tank before it is put into operation. This improves heat exchange efficiency and reduces the circulation flow rate of the cooling and heating fluids. It also significantly reduces the complexity of the heat exchange structure, lowers manufacturing costs, avoids the stagnation failure and corrosion problems caused by long-term immersion in existing heat exchange structures, and greatly extends the service life of the hydrogen storage tank. In addition to the corrosion protection of the outer shell of the hydrogen storage tank, the hydrogen storage tank can be kept in a completely dry state when not in operation or under low load, thereby eliminating tank corrosion.

[0052] The solid-state hydrogen storage device of this disclosure uses a hydrogen storage tank for storing and releasing hydrogen. The hydrogen storage tank is vertically installed and has a large length-to-diameter ratio to reduce the footprint and the radial heat transfer distance of the hydrogen storage alloy inside the tank, thereby improving heat exchange efficiency. By stacking multiple support structures sequentially inside the hydrogen storage tank, and forming a accommodating space for accommodating the hydrogen storage alloy between two adjacent support structures, each accommodating space constitutes an independent hydrogen storage alloy segment. The upper part of the hydrogen storage alloy in each segment has an expansion gap, which solves the problems of expansion space and gravity compaction of the hydrogen storage alloy medium, and increases the safety of the hydrogen storage tank.

[0053] For example, such as Figure 1 and Figure 2 As shown, the surface overflow structure 140 includes a plurality of spiral groove plates 141, which are alternately and intermittently wound around the outer surface of the hydrogen storage tank 110 along the length direction of the hydrogen storage tank 110.

[0054] Specifically, the outer surface of the hydrogen storage tank 110 is wound with several spaced and staggered spiral grooves 141 from top to bottom. The inner diameter of the spiral grooves 141 is equal to or slightly smaller than the outer diameter of the hydrogen storage tank 110. The circumferential wrap angle of each spiral groove 141 is greater than 180 degrees and less than 270 degrees, so that each spiral groove 141 can self-clamp and wrap tightly around the outer surface of the hydrogen storage tank. Among them, the spiral grooves 141 are preferably made of corrosion-resistant non-metallic organic materials.

[0055] The specific angle of the circumferential wrap angle of the spiral groove plate 141 can be selected according to actual needs, and this embodiment does not follow a specific limitation.

[0056] For example, such as Figure 2 As shown, the spiral groove plate 141 includes an outer edge surface 141a, an inclined surface 141b, and a plurality of through holes 141c.

[0057] The outer edge facade 141a is arranged along the length of the hydrogen storage tank 110 to prevent the heat exchange fluid from overflowing from the outside.

[0058] The first end of the inclined surface 141b is connected to the outer edge surface 141a, and the second end of the inclined surface 141b abuts against the outer surface of the hydrogen storage tank 110. The inclined surface 141b is inclined in the direction of heat exchange fluid flow. That is, the inclined surface 141b is inclined downward to facilitate the flow of heat exchange fluid along the outer surface of the hydrogen storage tank 110.

[0059] It should be noted that the tilt angle of the inclined surface 141b is between 2 degrees and 30 degrees. As long as it facilitates the flow of heat exchange fluid along the outer surface of the hydrogen storage tank 110, this embodiment does not impose a specific limitation on the tilt angle of the inclined surface 141b, and it can be selected according to actual needs.

[0060] Multiple through holes 141c are spaced apart and disposed at the end of the inclined surface 141b near the hydrogen storage tank, and some of the through holes 141c are in contact with the outer surface of the hydrogen storage tank 110. That is, multiple spaced through holes 141c are provided on the inner edge of the inclined surface 141b, and the inner side of the through holes 141c is in contact with the outer surface of the hydrogen storage tank 110, so that the heat exchange fluid entering the inclined surface 141b can be evenly permeated to the outer surface of the hydrogen storage tank 110 through the multiple through holes 141c and continue to flow downward.

[0061] Specifically, 2 to 30 semi-circular through holes 141c are equally spaced on the inner edge of the inclined surface 141b of each spiral groove plate 141, and the radius of the semi-circular through holes 141c is between 1 mm and 15 mm.

[0062] It should be noted that the multiple through holes 141c can be evenly spaced or equally spaced. This embodiment does not specifically limit their distribution method, but can limit it according to actual needs. Furthermore, the shape of the through holes 141c can be, but is not limited to, a semi-circle as in this embodiment, or other shapes, as long as some of the through holes 141c contact the outer surface of the hydrogen storage tank 110. At the same time, the number of through holes 141c is not specifically limited, and can be selected according to actual needs.

[0063] Specifically, such as Figure 1 and Figure 2 As shown, multiple spiral grooves 141 are arranged at intervals, with the heat exchange fluid flowing from the upper spiral groove 141 into the lower spiral groove 141. The lower spiral groove 141 intercepts the heat exchange fluid flowing down from the upper spiral groove 141, slowing down the film-like heat exchange flow on the outer surface of the hydrogen storage tank 110. The lower spiral groove 141 then redistributes the flow through leakage, preventing the film-like heat exchange flow on the outer surface of the hydrogen storage tank 110 from becoming increasingly rapid and thinner under gravity, thus avoiding unevenness or even dry walls. This improves heat exchange efficiency, reduces the flow rate of the heat exchange fluid, and decreases energy consumption.

[0064] In this embodiment, the heat exchange fluid flows sequentially into the multiple flow-guiding spiral groove plates 114 provided on the outer surface of the hydrogen storage tank 110, and flows down along the outer surface of the hydrogen storage tank 110 through the multiple through holes 141c provided on the inclined surface 141b of the spiral groove plate 114. This allows the heat exchange fluid to uniformly coat the outer wall of the hydrogen storage tank 110 and flow down. Furthermore, the spiral groove plate 141 located at the bottom can be repeatedly re-regulated to ensure uniform flow, thus achieving the best heat transfer effect and reducing or eliminating the ineffective circulation flow of the heat exchange fluid.

[0065] It should be noted that the bottom of the hydrogen storage tank 110 is also equipped with a flow guide channel. The fluid after heat exchange can be collected through the flow guide channel, and after filtration, cooling or heating, it can be pressurized by the pump and re-enter the heat exchange cycle.

[0066] For example, a positioning magnet is provided at the first end of the heat exchange fluid transport pipe 150. The positioning magnet is used to magnetically attract the first end of the heat exchange fluid transport pipe 150 to the outer surface of the hydrogen storage tank 110, so as to connect the heat exchange fluid transport pipe 150 to the topmost spiral groove plate 141.

[0067] Specifically, in this embodiment, the heat exchange fluid delivery pipe 150 can be a heat exchange fluid delivery hose, and the positioning magnet can be a positioning magnet. A positioning magnet is attached to the opening of the heat exchange fluid delivery hose. The positioning magnet is magnetically attracted to the shell of the hydrogen storage tank 110, so that the opening of the heat exchange fluid delivery hose is flexibly adjusted and fixed at the top spiral groove plate 114, so that the heat exchange fluid begins to overflow along the top spiral groove plate 141. The heat exchange fluid passes through each spiral groove plate 141 in sequence to form a downward flowing hanging film-like coating flow on the outer surface of the hydrogen storage tank 110.

[0068] In this embodiment, a positioning magnet is provided at the first end of the heat exchange fluid conveying pipe 150, which can facilitate the adjustment and fixation of the connection position of the first end of the heat exchange fluid conveying pipe 150, simplifying the operation.

[0069] For example, such as Figure 3 As shown, the support structure 130 includes a support base 131, a hydrogen flow pipe 132, and multiple support columns 133. The first end of the hydrogen flow pipe 132 passes through the central region of the support base 131 and is flush with the bottom surface of the support base 131. Multiple support columns 132 are spaced apart at the edge regions of the support base 131. The support base 131 of the upper support structure 130 abuts against the multiple support columns 133 of its adjacent lower support structure 130 to form an accommodating space.

[0070] The hydrogen guide pipes 132 of the adjacent upper and lower support structures 130 are positioned correspondingly, enabling the transfer of hydrogen from the hydrogen storage alloy within the upper and lower support structures 130. During hydrogen storage, the hydrogen guide pipes 132 can simultaneously guide the hydrogen entering from the upper part of the hydrogen storage tank 110 to each hydrogen storage alloy section for synchronous hydrogen storage; while during hydrogen release, the hydrogen guide pipes 132 can simultaneously collect and export the hydrogen released from each hydrogen storage section.

[0071] Specifically, in this embodiment, the support base 131 is circular in shape, matching the cross-sectional shape of the hydrogen storage tank 110, and the outer diameter of the support base 131 is slightly smaller than the inner diameter of the hydrogen storage tank 110. The number of support bases 131 can be 2 to 15. Correspondingly, the hydrogen storage alloy medium is divided into an equal number of segments, each segment containing the hydrogen storage alloy medium. The number of support columns 133 is 3 to 6, evenly distributed circumferentially and vertically fixedly installed on the edge area of ​​the support base 131.

[0072] It should be noted that this embodiment does not impose specific limitations on the number and distribution of the support bases 131, and they can be selected according to actual needs.

[0073] For example, such as Figure 3 As shown, the height of the multiple support columns 133 in each support structure 130 is greater than the height of the hydrogen guide tube 132. That is, the length of the support column 133 is greater than the length of the hydrogen guide tube 132, and the hydrogen guide tube 132 automatically forms an axial gap at its upper end, allowing hydrogen to enter and exit the hydrogen guide tube 132. The width of the axial gap is between 0.5 mm and 30 mm.

[0074] It should be noted that the width of the axial gap at the upper part of the hydrogen guide tube 132 is not specifically limited in this embodiment, and can be selected according to actual needs.

[0075] In this embodiment, by setting up a hydrogen guide pipe 132, hydrogen can be added or collected simultaneously between the upper and lower support structures 130 during the hydrogen storage and release process, realizing parallel operation of the upper and lower sections of the hydrogen storage tank 110, which greatly improves the hydrogen storage and release rate of the hydrogen storage tank 110.

[0076] For example, the height of the hydrogen storage alloy filling the accommodating space is less than the height of the hydrogen flow pipe 132. In this embodiment, each section of the filled hydrogen storage alloy medium has an expansion gap of 2 mm to 60 mm at its top. The specific size of the expansion gap for the hydrogen storage alloy is not specifically limited in this embodiment and can be selected according to actual needs.

[0077] In this embodiment, the length of the hydrogen storage tank 110 is divided into several segments by a plurality of stacked support structures 130, and the hydrogen storage alloy is segmented. The height of the hydrogen storage alloy is less than the height of the hydrogen gas guide pipe 132, so that each segment of the hydrogen storage alloy has free space for upward expansion. This avoids the problem of hydrogen storage alloy breaking due to obstructed expansion and the problem of gravity compaction of hydrogen storage alloy particles in the tall tank, thereby improving the reliability of the hydrogen storage device.

[0078] For example, such as Figure 3 As shown, the second end of the hydrogen guide tube 132 is provided with an internal thread 132a. Specifically, the top of the hydrogen guide tube 132 is provided with an internal thread 132a. In this way, when replacing the hydrogen storage alloy packing, a pull rod with an external thread of equal diameter at the head is screwed into the internal thread 132a of the hydrogen guide tube 132, and the entire support structure 130 can be pulled out in sequence, along with the hydrogen storage alloy medium in its corresponding accommodating space, facilitating the replacement of the hydrogen storage alloy medium.

[0079] For example, such as Figure 1 As shown, there are multiple hydrogen storage tanks 110. The device also includes a positioning bracket 160, which positions the multiple hydrogen storage tanks 110 in columns and rows.

[0080] Specifically, the number of hydrogen storage tanks 110 can be from 1 to 80, and they are positioned by positioning brackets 160 arranged at row and column intervals. The outer diameter of each hydrogen storage tank 110 can range from 30 mm to 800 mm, and its length is 2 to 80 times its outer diameter. Multiple hydrogen storage tanks 110 can be of uniform size or different sizes, and all can be positioned using the positioning brackets 160.

[0081] It should be noted that the number, size, and arrangement of the hydrogen storage tanks 110 can be selected according to actual needs, and this embodiment does not impose specific limitations.

[0082] In this embodiment, multiple separate cylindrical hydrogen storage tanks 110 are arranged and installed by positioning brackets 160, and the scale can be large or small; one or several hydrogen storage tanks 110 can be freely put into and removed from the hydrogen storage device, so as to facilitate replacement and adapt to large-scale flexible operation to changes in the hydrogen storage capacity of the device.

[0083] For example, such as Figure 1 As shown, the hydrogen transmission pipeline 120 includes a main hydrogen pipeline 121 and multiple branch hydrogen pipelines 122 connected to the main hydrogen pipeline 121, wherein each branch hydrogen pipeline 122 is connected to its corresponding hydrogen storage tank 110. Each branch hydrogen pipeline 122 is equipped with a first control valve 123.

[0084] Specifically, during hydrogen storage, the first control valve 123 is opened, allowing hydrogen from the hydrogen source to enter the main hydrogen pipeline 121, and then through each hydrogen branch pipeline 122 into the corresponding hydrogen storage tank 110 for storage. During hydrogen release, the hydrogen released from each hydrogen storage tank 110 is collected through its corresponding hydrogen branch pipeline 122 and returned to the main hydrogen pipeline 121, from where it is transported back to the hydrogen source. The hydrogen storage or release process in each hydrogen storage tank 110 can be individually controlled via each hydrogen branch pipeline 122, facilitating control.

[0085] In this embodiment, by setting up multiple hydrogen branch pipes 122 connected to the main hydrogen pipeline 121, the hydrogen supply to each hydrogen storage tank 110 can be controlled independently. Each hydrogen storage tank 110 can be added, removed, or replaced at any time, which is quick and convenient and does not affect other hydrogen storage tanks.

[0086] For example, such as Figure 1 As shown, the heat exchange fluid transport pipeline 150 includes a heat exchange fluid main pipeline 151 and multiple heat exchange fluid branch pipelines 152 connected to the heat exchange fluid main pipeline 151, wherein each heat exchange fluid branch pipeline 152 is connected to its corresponding surface overflow structure 140. Each heat exchange fluid branch pipeline 152 is equipped with a second control valve 153.

[0087] Specifically, during hydrogen storage, heat is generated inside the hydrogen storage tank 110. The second control valve 153 is opened, allowing cold fluid from the heat exchange fluid source to enter the main heat exchange fluid pipe 151. This fluid then flows through each heat exchange fluid branch pipe 152 into the outer surface of its corresponding hydrogen storage tank 110, exchanging heat and cooling the tank. During hydrogen release, heat is required inside the hydrogen storage tank 110. At this time, hot fluid enters the main heat exchange fluid pipe 151 and flows through each heat exchange fluid branch pipe 152 into the outer surface of its corresponding hydrogen storage tank 110, exchanging heat and transferring it to the tank wall. This heat is then radially transferred to each section of the hydrogen storage alloy, where it decomposes and releases hydrogen gas.

[0088] In this embodiment, by setting up multiple heat exchange fluid branch pipes 152 connected to the heat exchange fluid main pipe 151, the heat exchange process of each hydrogen storage tank 110 can be controlled individually, and different hydrogen storage tanks 110 can perform hydrogen storage or hydrogen release processes separately.

[0089] It should be noted that in this embodiment, when there are multiple hydrogen storage tanks 110 and they can be controlled individually, if the solid hydrogen storage device is divided into two or two sets connected in parallel, with one zone (or set) storing hydrogen and the other zone (or set) discharging hydrogen simultaneously, the two streams of cold and hot heat exchange fluids that have already exchanged heat can be cross-circulated: that is, the heat exchange fluid heated in the hydrogen storage zone flows to the hydrogen discharging zone, and the heat exchange fluid cooled in the hydrogen discharging zone flows back to the hydrogen storage zone, thereby achieving heat self-balance without the need for external cooling and external heating treatment, which can save energy consumption.

[0090] like Figures 1 to 3 As shown, the working process and principle of the solid-state hydrogen storage device in this embodiment include:

[0091] During hydrogen storage, pressurized hydrogen is introduced from a hydrogen source outside the device, passes through the main hydrogen pipeline 121 and the corresponding branch hydrogen pipeline 122, enters the top of the hydrogen storage tank 110 via the first control valve 123, and then is guided through the hydrogen guide pipe 132 in the middle of each support structure 130 to the hydrogen storage alloy medium in the accommodating space of each support structure 130 for hydrogen absorption and storage.

[0092] The positioning magnet of the heat exchange fluid delivery pipe 150 is magnetically positioned onto the outer shell of the hydrogen storage tank 110, so that the outlet of the heat exchange fluid delivery pipe 150 is connected to the top spiral groove plate 141. The heat generated during hydrogen storage is radially transferred to the outer shell of the hydrogen storage tank 110. The circulating cold fluid flows sequentially through the heat exchange fluid main pipe 151 and the corresponding heat exchange fluid branch pipes 152, and then flows into the top spiral groove plate 141 via the second control valve 153. The heat exchange cold fluid flows down through the through holes 141c on the inclined surface 141b of the spiral groove plate 141, and most of it leaks through the through holes 141c, flowing down the outer surface of the hydrogen storage tank 110 in a film-like manner, carrying away the heat from the tank wall of the hydrogen storage tank 110. During the downward flow of the heat exchange cold fluid, it is also re-regulated and homogenized by the spiral groove plates 141 below it, maintaining a uniform film flow for efficient heat exchange.

[0093] When hydrogen is released, the circulating heat exchange fluid transfers heat to the tank wall of the hydrogen storage tank 110 in the same film flow manner, and then radially to each section of the hydrogen storage alloy medium. The hydrogen storage alloy decomposes hydrogen gas upon heating. The hydrogen gas is collected through the hydrogen gas guide pipe 132 in the middle of the support structure 130 of each section, and then to the top of the hydrogen storage tank 110. Then, the hydrogen gas is transported out of the hydrogen storage device through the first control valve 123, the hydrogen branch pipe 122, and the hydrogen main pipe 121.

[0094] The solid hydrogen storage device of this disclosure has a simple structure, low manufacturing cost, long life, and the number of hydrogen storage tanks can be combined arbitrarily. It can be added or removed at any time to adapt to the hydrogen storage and release requirements with large flow rate changes.

[0095] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the embodiments of this disclosure, and the embodiments of this disclosure are not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the embodiments of this disclosure, and these modifications and improvements are also considered to be within the protection scope of the embodiments of this disclosure.

Claims

1. A solid-state hydrogen storage device, characterized in that, include: Hydrogen storage tank; A hydrogen delivery pipeline, wherein the first end of the hydrogen delivery pipeline is connected to the hydrogen storage tank, and the second end of the hydrogen delivery pipeline is used to connect to a hydrogen source; Multiple support structures are stacked sequentially inside the hydrogen storage tank, wherein a space for accommodating the hydrogen storage alloy is formed between two adjacent support structures. A surface overflow structure is provided on the outer surface of the hydrogen storage tank; A heat exchange fluid transport pipe, wherein a first end of the heat exchange fluid transport pipe is connected to the surface overflow structure, and a second end of the heat exchange fluid pipe is used to connect to a heat exchange fluid source; wherein... When hydrogen is stored or released in the hydrogen storage tank, the corresponding heat exchange fluid flows through the surface overflow structure to form a downward-flowing, wall-mounted film-like coating flow on the outer surface of the hydrogen storage tank, thereby achieving heat exchange with the hydrogen storage tank.

2. The solid-state hydrogen storage device according to claim 1, characterized in that, The surface overflow structure includes multiple spiral groove plates; The plurality of spiral groove plates are alternately wound around the outer surface of the hydrogen storage tank along the length of the hydrogen storage tank.

3. The solid-state hydrogen storage device according to claim 2, characterized in that, The circumferential wrap angle of each of the spiral groove plates is greater than 180 degrees and less than 270 degrees.

4. The solid-state hydrogen storage device according to claim 2, characterized in that, The spiral groove plate includes an outer edge surface, an inclined surface, and multiple through holes; The outer edge facade is arranged along the length of the hydrogen storage tank; The first end of the inclined surface is connected to the outer edge facade, and the second end of the inclined surface abuts against the outer surface of the hydrogen storage tank. The inclined surface is inclined in the direction of the flow of the heat exchange fluid. Multiple through holes are spaced apart and disposed at the end of the inclined surface near the hydrogen storage tank, and some of the through holes are in contact with the outer surface of the hydrogen storage tank.

5. The solid-state hydrogen storage device according to any one of claims 2 to 4, characterized in that, A positioning magnet is provided at the first end of the heat exchange fluid transport pipeline; The positioning magnet is used to magnetically attract the first end of the heat exchange fluid to the outer surface of the hydrogen storage tank, so as to connect the heat exchange conveying pipe to the topmost spiral groove plate.

6. The solid-state hydrogen storage device according to any one of claims 1 to 4, characterized in that, The support structure includes a support base, a hydrogen flow pipe, and multiple support columns. The first end of the hydrogen guide tube passes through the central region of the support base and is flush with the bottom surface of the support base. Multiple support columns are spaced apart and arranged at intervals along the edge region of the support base; wherein, The support base of the upper support structure abuts against a plurality of support columns of the adjacent lower support structure to form the accommodating space.

7. The solid-state hydrogen storage device according to claim 6, characterized in that, The height of the plurality of support columns in each of the support structures is greater than the height of the hydrogen flow pipe; The height of the hydrogen storage alloy filling the accommodating space is less than the height of the hydrogen flow pipe.

8. The solid-state hydrogen storage device according to claim 5, characterized in that, The second end of the hydrogen guide tube is provided with an internal thread.

9. The solid-state hydrogen storage device according to any one of claims 1 to 4, characterized in that, The number of hydrogen storage tanks is multiple, and the device also includes a positioning bracket; The positioning bracket positions the multiple hydrogen storage tanks in columns and rows.

10. The solid-state hydrogen storage device according to claim 9, characterized in that, The hydrogen transmission pipeline includes a main hydrogen pipeline and multiple branch hydrogen pipelines connected to the main hydrogen pipeline, wherein each branch hydrogen pipeline is connected to its corresponding hydrogen storage tank. The heat exchange fluid transport pipeline includes a main heat exchange fluid pipeline and a plurality of branch heat exchange fluid pipelines connected to the main heat exchange fluid pipeline, wherein each branch heat exchange fluid pipeline is connected to its corresponding surface overflow structure.

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