Integrated composite solid hydrogen storage device

Abstract

The utility model belongs to the technical field of solid hydrogen storage, and particularly relates to an integrated composite solid hydrogen storage device which comprises a hydrogen storage device shell, and a water storage cavity, a hydrolysis reaction cavity and a metal hydride hydrogen storage bottle are arranged in the hydrogen storage device shell. The cavity wall of the water storage cavity, the cavity wall of the hydrolysis reaction cavity and the shell wall of the hydrogen storage device shell define a closed phase change material filling area used for being filled with a phase change material; a flow guide structure for guiding an aqueous solution in the water storage cavity into the hydrolysis reaction cavity is connected between the water storage cavity and the hydrolysis reaction cavity; the metal hydride hydrogen storage bottle is arranged in the water storage cavity, and a first gas outlet communicated with the metal hydride hydrogen storage bottle and a second gas outlet communicated with the hydrolysis reaction cavity are formed in the hydrogen storage device shell. The hydrogen storage device overcomes the defects that a hydrolysis type hydrogen storage device is difficult to remove reaction heat and a metal hydride type hydrogen storage device is low in energy utilization efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of solid-state hydrogen storage, and in particular relates to an integrated composite solid-state hydrogen storage device. Background Art

[0002] Solid-state hydrogen storage materials are mainly divided into hydrolysis hydrogen storage materials and reversible adsorption hydrogen storage materials, and reversible adsorption materials are mainly metal hydrides. Different solid-state hydrogen storage devices correspond to the application requirements of different materials. Among them, hydrolysis hydrogen storage devices have the advantage of large hydrogen storage capacity, but they release a lot of heat during the hydrogen release reaction, the reaction is not easy to control, and it is difficult to remove the reaction heat. The metal hydrides used in metal hydride hydrogen storage devices absorb heat due to the breaking of metal hydrogen bonds during the hydrogen release process, and often require additional heat sources for heating. In addition to increasing the weight of the device itself and reducing the effective hydrogen storage density, the design of the heat supply will also reduce the overall energy utilization efficiency of the system.

[0003] In the prior art, there are devices that combine hydrogen production by hydrolysis with hydrogen storage using adsorption materials, such as an integrated hydrogen production and energy storage device disclosed in a Chinese patent with authorization announcement number CN212893904U, which includes a hydrogen storage device shell, a hydrogen production device, a connecting device, a water vapor input device and a hydrogen output device, wherein a plurality of first compartments are provided in the hydrogen storage device shell, and AB5 hydrogen storage alloy powder is placed inside the first compartment; the hydrogen production device is connected to the water vapor input device, and a plurality of second compartments are provided in the hydrogen production device, and borohydride, a catalyst, and a certain proportion of phase change material are placed in the second compartment; the connecting device includes a connecting pipe, a one-way valve and a dryer, one end of the connecting pipe is connected to the interior of the hydrogen production device, and the other end is connected to the interior of the first compartment.

[0004] When the above-mentioned integrated hydrogen production and energy storage device is working, water vapor is introduced into the hydrogen production device through the water vapor input device, and the water vapor reacts with borohydride to generate hydrogen. The gas after the reaction absorbs water vapor through the dryer to ensure the dryness of the hydrogen. The dried hydrogen enters the first compartment. The hydrogen storage alloy powder in the first compartment plays a role of storage and purification. Finally, the output of hydrogen is controlled by the hydrogen output device. When outputting hydrogen, the above-mentioned device still needs to provide additional heat to heat the hydrogen storage alloy powder before releasing hydrogen. The heat released by the reaction of water vapor and borohydride cannot be used, and the energy consumption is large. Utility Model Content

[0005] The utility model provides an integrated composite solid-state hydrogen storage device, which solves the technical problems of difficulty in removing reaction heat in hydrolysis-type hydrogen storage devices and low energy utilization efficiency in metal hydride-type hydrogen storage devices.

[0006] In order to solve the above problems, the utility model provides an integrated composite solid-state hydrogen storage device adopts the following technical solutions:

[0007] An integrated composite solid-state hydrogen storage device, comprising a hydrogen storage device housing, in which a water storage chamber, a hydrolysis reaction chamber, and a metal hydride hydrogen storage bottle are provided; a phase change material filling area for filling a phase change material is enclosed between the chamber wall of the water storage chamber, the chamber wall of the hydrolysis reaction chamber, and the housing wall of the hydrogen storage device housing; the chamber walls of the water storage chamber and the hydrolysis reaction chamber are both heat-conducting chamber walls capable of conducting heat with the phase change material; a diversion structure for introducing the aqueous solution in the water storage chamber into the hydrolysis reaction chamber is connected between the water storage chamber and the hydrolysis reaction chamber; the metal hydride hydrogen storage bottle is arranged in the water storage chamber; a first air outlet communicated with the metal hydride hydrogen storage bottle and a second air outlet communicated with the hydrolysis reaction chamber are respectively provided on the hydrogen storage device housing, and the first air outlet and the second air outlet are respectively connected to a hydrogen transmission pipeline

[0008] Advantageous effects: The utility model can combine hydrolysis hydrogen storage and metal hydride hydrogen storage. By absorbing the heat released during the hydrolysis reaction through the phase change material, the hydrolysis reaction heat can be quickly removed, and this part of the heat is used as a heat source to supply heat to the metal hydride hydrogen storage bottle during the hydrogen release process, thereby improving the overall energy utilization rate of the integrated composite solid-state hydrogen storage device.

[0009] Further, the diversion structure is a fluid distributor, which includes a diversion pipe and a porous diversion ring that is communicated with the diversion pipe and is arranged in multiple layers at intervals in the up and down directions. The diversion pipe passes through the phase change material filling area and the upper end of the diversion pipe is flush with the bottom of the water storage chamber; the porous diversion ring is located in the hydrolysis reaction chamber, and a water flow control valve is provided on the diversion pipe.

[0010] Advantageous effects: After the water in the water storage chamber flows through the fluid distributor, the water can be evenly dispersed in the hydrolysis reaction chamber to react with the hydrolysis hydrogen storage material in the hydrolysis reaction chamber; the water flow control valve can control the hydrogen production rate of the hydrolysis hydrogen storage material and improve safety.

[0011] Further, each layer of the porous diversion ring is provided with a plurality of them, which are arranged at intervals in the radial direction of the diversion pipe and the outer diameter gradually increases from the direction close to the diversion pipe to the direction away from the diversion pipe. The diversion pipe is connected with a plurality of communication pipes arranged in the circumferential direction of the diversion pipe at the position corresponding to each layer of the porous diversion ring, and the communication pipes are fixedly connected to the corresponding porous diversion rings of each layer to communicate the diversion pipe with each porous diversion ring.

[0012] Advantageous effects: It can increase the dispersion area of water in the hydrolysis reaction chamber and make the reaction more complete.

[0013] Further, the chamber walls of the water storage chamber and the hydrolysis reaction chamber both adopt heat pipes.

[0014] Advantageous effects: The heat pipe can play a role in quickly transferring heat, so as to facilitate the phase change material to quickly absorb and release heat.

[0015] Further, it is defined that the first air outlet is connected to the first hydrogen transmission pipeline, and the second air outlet is connected to the second hydrogen transmission pipeline. The outlets of the first hydrogen transmission pipeline and the second hydrogen transmission pipeline converge to be used for connecting a hydrogen-consuming device.

[0016] Beneficial effect: The hydrogen-consuming device can switch different hydrogen transmission gas paths according to requirements.

[0017] Further, a hydrolysis hydrogen conducting pipe is connected between the hydrolysis reaction chamber and the first air outlet. A filter element is provided at the outlet of the hydrolysis hydrogen conducting pipe. A dryer, a check valve, and a first pressure reducing valve are sequentially arranged on the first hydrogen transmission pipeline, and a second pressure reducing valve is arranged on the second hydrogen transmission pipeline.

[0018] Beneficial effect: The filter element can filter solid particles to prevent the hydrolysis hydrogen storage material powder from blocking the first hydrogen transmission pipeline along with the flow of hydrogen. The dryer removes the residual moisture in the hydrolysis hydrogen, the check valve prevents gas from flowing back, and both the first pressure reducing valve and the second pressure reducing valve regulate the outlet pressure of hydrogen to make the outlet pressures of the two hydrogen transmission pipelines the same.

[0019] Further, a three-way valve is further provided on the second hydrogen transmission pipeline upstream of the second pressure reducing valve. One of the valve ports of the three-way valve is used for connecting a hydrogen charging source.

[0020] Beneficial effect: The three-way valve can switch the gas path. When the three-way valve is switched to connect the metal hydride hydrogen storage bottle with the hydrogen charging source, the hydrogen charging source fills hydrogen into the metal hydride hydrogen storage bottle through the gas transmission pipeline. The metal hydride adsorbs hydrogen and generates an exothermic reaction. The aqueous solution in the water storage chamber can play a role in cooling, and then the heat is stored in the phase change material in the phase change material filling area for use when the metal hydride hydrogen storage bottle releases hydrogen.

[0021] Further, a hydrogen buffer bottle is further provided in the water storage chamber. A third air outlet communicated with the hydrogen buffer bottle is provided on the outer shell of the hydrogen storage device. A buffer gas path is connected between the third air outlet and the first air outlet.

[0022] Beneficial effect: When the amount of hydrogen is large, the excess hydrogen can enter the hydrogen buffer bottle for storage through the buffer gas path.

[0023] Further, the bottom of the outer shell of the hydrogen storage device is detachably connected with a sealing flange. A plurality of support columns are provided at the bottom of the sealing flange, and a traveling wheel is installed on each support column.

[0024] Beneficial effect: It is convenient to move the entire device to the required position and can replace the hydrolysis hydrogen storage material in the hydrolysis reaction chamber.

[0025] Further, a liquid injection port communicated with the water storage chamber is provided on the outer shell of the hydrogen storage device.

[0026] Beneficial effects: The aqueous solution can be replenished into the water storage cavity at any time to ensure the normal progress of the reaction in the hydrolysis reaction cavity. Description of the drawings

[0027] By referring to the following detailed description with reference to the drawings, the above and other objects, features and advantages of the exemplary embodiments of the present utility model will become readily understood. In the drawings, several embodiments of the present utility model are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0028] Figure 1 It is a schematic diagram after the integrated composite solid hydrogen storage device of the present utility model is connected to the hydrogen transmission pipeline;

[0029] Figure 2 It is a schematic diagram of the overall structure of the hydrogen storage device housing;

[0030] Figure 3 It is a schematic diagram of the structure of the fluid distributor (showing a single layer).

[0031] Description of the reference numerals:

[0032] 1. Hydrogen storage device housing; 2. Hydrolysis reaction cavity; 21. Water flow control valve; 22. Fluid distributor; 221. Diversion pipe; 222. Porous diversion ring; 223. Connecting pipe; 3. Phase change material filling area; 31. Heat sink plate; 4. Water storage cavity; 41. Aqueous solution; 42. Liquid injection port; 43. Metal hydride hydrogen storage bottle; 44. Hydrogen buffer bottle; 5. Hydrolysis hydrogen guide pipe; 6. Dryer; 7. Check valve; 8. First pressure reducing valve; 9. Three-way valve; 10. Second pressure reducing valve; 11. Stop valve; 12. Support column; 13. Traveling wheel; 14. Second air outlet; 15. Third air outlet; 16. First air outlet; 17. Sealing flange. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Those skilled in the art should know that the embodiments described below are a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts fall within the protection scope of the present utility model.

[0034] Next, the principles and spirits of the present utility model will be elaborated in detail with reference to several representative embodiments of the present utility model.

[0035] Embodiments of the integrated composite solid hydrogen storage device provided by the present utility model:

[0036] As Figure 1As shown, an integrated composite solid-state hydrogen storage device includes a hydrogen storage device shell 1 and a hydrolysis reaction chamber 2, a phase change material filling area 3, a water storage chamber 4, a metal hydride hydrogen storage bottle 43, and a hydrogen buffer bottle 44 arranged in the hydrogen storage device shell 1.

[0037] Among them, the outer shell 1 of the hydrogen storage device is a hollow structure, and the hydrolysis reaction chamber 2 and the water storage chamber 4 are both rectangular cavities. The hydrolysis reaction chamber 2 is located below the water storage chamber 4, and the cavity opening of the hydrolysis reaction chamber 2 faces downward, and the cavity opening of the water storage chamber 4 faces upward, and the cavity opening of the water storage chamber 4 is blocked by the outer shell 1 of the hydrogen storage device. The hydrolysis reaction chamber 2 is used to fill powdered and blocky hydrolysis hydrogen storage materials, and the hydrolysis hydrogen storage materials can also contain catalysts that promote the hydrolysis reaction. The water storage chamber 4 is filled with an aqueous solution 41, and the aqueous solution 41 generally uses deionized water or an acidic or alkaline aqueous solution 41 that can promote the reaction of the hydrolysis material, collectively referred to as an aqueous solution 41. As Figure 1 and Figure 2 As shown, the top of the hydrogen storage device housing 1 is provided with a liquid injection port 42 connected to the water storage chamber 4. The liquid injection port 42 is a spiral sealing structure. The water solution 41 can be added to the water storage chamber 4 by unscrewing the liquid injection port 42. The lower surface of the hydrogen storage device housing 1 is detachably mounted with a sealing flange 17 by bolts. The sealing flange 17 blocks the cavity opening of the hydrolysis reaction chamber 2. By disassembling and assembling the sealing flange 17, the hydrolysis hydrogen storage material in the hydrolysis reaction chamber 2 can be filled and replaced. A plurality of support columns 12 are welded to the lower surface of the sealing flange 17. A walking wheel 13 is fixed to one end of the support column 12 by bolts. The operator can move the entire integrated composite solid-state hydrogen storage device to a desired position by the walking wheel 13.

[0038] The phase change material filling area 3 is surrounded by the cavity wall of the water storage chamber 4, the cavity wall of the hydrolysis reaction chamber 2 and the shell wall of the hydrogen storage device shell 1, which is a closed space. The phase change material filling area 3 is filled with solid-solid or solid-liquid phase change material. The cavity wall of the water storage chamber 4 and the cavity wall of the hydrolysis reaction chamber 2 are both capable of conducting heat. In this embodiment, the cavity wall of the water storage chamber 4 and the cavity wall of the hydrolysis reaction chamber 2 are both made of a heat spreader 31. The heat spreader 31 is a copper-based, aluminum-based or other type of high thermal conductivity metal plate or other type of high thermal conductivity heat spreader 31, which can quickly transfer the heat of the hydrolysis reaction to the phase change material, and also enable rapid heat transfer between the phase change material and the aqueous solution 41 in the water storage chamber 4.

[0039] The hydrolysis reaction chamber 2 and the water storage chamber 4 are connected through a fluid distributor 22. The fluid distributor 22 serves as a flow guide structure to introduce the aqueous solution 41 in the water storage chamber 4 into the hydrolysis reaction chamber 2 so that the aqueous solution 41 reacts with the hydrolysis hydrogen storage material. Figure 1 and Figure 3As shown, the fluid distributor 22 includes a diversion pipe 221 and a porous diversion ring 222 that is communicated with the diversion pipe 221 and is arranged in four layers at intervals in the up and down directions. The diversion pipe 221 passes through the phase change material filling area 3, and the upper end of the diversion pipe 221 is flush with the bottom of the water storage cavity 4. The porous diversion ring 222 is located in the hydrolysis reaction cavity 2, and a water flow control valve 21 is provided on the diversion pipe 221. In this embodiment, the porous diversion ring 222 is circular, and there are three in each layer. The three porous diversion rings 222 in each layer are arranged at intervals along the radial direction of the diversion pipe 221, and the outer diameter gradually increases from the direction close to the diversion pipe 221 to the direction away from the diversion pipe 221. The diversion pipe 221 is connected with four communicating pipes 223 that are evenly arranged in the circumferential direction of the diversion pipe 221 at the positions corresponding to each layer of the porous diversion ring 222. The communicating pipes 223 are fixedly connected with each porous diversion ring 222 to communicate the diversion pipe 221 with each porous diversion ring 222. The aqueous solution 41 flows to the fluid distributor 22, and is evenly distributed in the hydrolysis reaction cavity 2 through the diversion pipe 221 and the porous diversion ring 222, and then reacts with the hydrolysis hydrogen storage material to generate hydrogen. The water flow control valve 21 can control the flow rate of the aqueous solution 41 flowing from the water storage cavity 4 to the hydrolysis reaction cavity 2 by controlling the opening of its own valve, and further control the reaction rate of the aqueous solution 41 and the hydrolysis hydrogen storage material. Of course, in other embodiments, the porous diversion ring 222 can also adopt a rectangular ring or a polygonal ring of other shapes; the number of layers of the porous diversion ring 222 can also be set according to actual needs, and is not limited to four layers in this embodiment.

[0040] As Figure 1 and Figure 2 shown, a hydrolysis hydrogen guide pipe 5 is connected to the hydrolysis reaction cavity 2. The hydrolysis hydrogen guide pipe 5 passes through the phase change material filling area 3 and the water storage cavity 4. A first air outlet 16 communicated with the outlet of the hydrolysis hydrogen guide pipe 5 is provided on the hydrogen storage device housing 1, and the first air outlet 16 is connected with a first hydrogen transmission pipeline. The hydrolysis hydrogen guide pipe 5 plays a role in quickly transmitting the hydrogen generated by hydrolysis. The outlet of the hydrolysis hydrogen guide pipe 5 is provided with a filter element, and the filter element is a porous structure, which plays a role in filtering solid particles to prevent the hydrolysis hydrogen storage material powder from blocking the first hydrogen transmission pipeline along with the flow of hydrogen.

[0041] The metal hydride hydrogen storage bottle 43 and the hydrogen buffer bottle 44 are both placed in the water storage cavity 4. The metal hydride hydrogen storage bottle 43 is filled with one of near-room-temperature hydrogen storage alloy materials such as AB, AB2, AB5, and BCC. A second air outlet 14 communicated with the metal hydride hydrogen storage bottle 43 and a third air outlet 15 communicated with the hydrogen buffer bottle 44 are provided on the hydrogen storage device housing 1. The second air outlet 14 is connected with a second hydrogen transmission pipeline, and a buffer gas path is connected between the third air outlet 15 and the first air outlet 16. The outlets of the first hydrogen transmission pipeline and the second hydrogen transmission pipeline meet, and are connected to a hydrogen-consuming device through a total gas path. A stop valve 11 is connected to the total gas path, which serves as a control for the overall gas path switch of the integrated composite solid-state hydrogen storage device.

[0042] As shown Figure 1 in the figure, a dryer 6, a check valve 7 and a first pressure reducing valve 8 are successively arranged on the first hydrogen transmission pipeline, and a three-way valve 9 and a second pressure reducing valve 10 are successively arranged on the second hydrogen transmission pipeline. The three-way valve 9 is a three-way ball valve. Two of the valve ports of the three-way ball valve are respectively communicated with the second air outlet 14 and the second pressure reducing valve 10, and the other valve port is used for connecting with a hydrogen filling source. The hydrogen generated by the reaction in the hydrolysis reaction chamber 2 flows through the hydrolysis hydrogen conduit 5 to the dryer 6. When the amount of hydrogen is large, the excess hydrogen flows into the hydrogen buffer bottle 44 for storage. The dried hydrogen flowing through the dryer 6 flows through the check valve 7. The check valve 7 serves to prevent the reverse flow of hydrogen, and then is adjusted to a suitable outlet pressure through the first pressure reducing valve 8.

[0043] A large amount of reaction heat released during the hydrolysis process of the hydrolysis hydrogen storage material is transferred to the phase change material through the heat sink 31. The phase change material absorbs heat and then transfers it to the aqueous solution 41 in the water storage chamber 4, promoting the dehydrogenation of the metal hydride material in the metal hydride hydrogen storage bottle 43. The released hydrogen flows through the three-way valve 9 to the second pressure reducing valve 10. The second pressure reducing valve 10 adjusts the outlet pressure to the same level as the outlet hydrogen pressure of the first pressure reducing valve 8, and then the hydrogen is transported to the hydrogen using device through the stop valve 11. This process makes full use of the large amount of reaction heat released by hydrolysis to improve the energy utilization efficiency of the dehydrogenation process of the metal hydride hydrogen storage bottle 43.

[0044] In addition to the above functions, the integrated composite solid hydrogen storage device can also cool down the hydrogen filling process of the metal hydride hydrogen storage bottle 43. Switch the three-way valve 9 to the hydrogen filling source, and hydrogen fills the metal hydride hydrogen storage bottle 43 through the gas transmission pipeline. When the metal hydride adsorbs hydrogen, an exothermic reaction occurs. The aqueous solution 41 in the water storage chamber 4 plays a role in cooling down, and then the heat is stored in the phase change material in the phase change material filling area 3 through the heat sink 31 for use when the metal hydride hydrogen storage bottle 43 dehydrogenates.

[0045] The usage method of the integrated composite solid hydrogen storage device of the present utility model is as follows:

[0046] Move the device to a suitable position through the walking wheels 13. When filling hydrogen, open the liquid injection port 42 to fill the water storage chamber 4 with the aqueous solution 41, and then switch the three-way valve 9 to the hydrogen filling source to fill the metal hydride hydrogen storage bottle 43 with hydrogen. After the metal hydride hydrogen storage bottle 43 is filled with hydrogen to saturation, open the sealing flange 17 to replace the hydrolysis hydrogen storage material, and then tighten the sealing flange 17 to complete the entire hydrogen filling process. When dehydrogenating, connect the device to the hydrogen using equipment, adjust the water flow control valve 21 to make the aqueous solution 41 evenly disperse in the hydrolysis reaction chamber 2 through the fluid distributor 22 and react with the hydrolysis hydrogen storage material, and then switch the three-way valve 9 to the dehydrogenation end, open the stop valve 11, and simultaneously transport the dried hydrolysis hydrogen and the hydrogen desorbed from the metal hydride to the hydrogen using equipment. During the process, the aqueous solution 41 can be supplemented at any time through the liquid injection port 42.

[0047] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0048] In the description of this specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. An integrated composite solid-state hydrogen storage device, comprising a hydrogen storage device housing, characterized in that: The shell of the hydrogen storage device is provided with a water storage chamber, a hydrolysis reaction chamber, and a metal hydride hydrogen storage bottle; The cavity wall of the water storage cavity, the cavity wall of the hydrolysis reaction cavity and the shell wall of the hydrogen storage device shell form a closed phase change material filling area for filling the phase change material; the cavity wall of the water storage cavity and the cavity wall of the hydrolysis reaction cavity are both heat-conducting cavity walls that can conduct heat with the phase change material; A flow guiding structure is connected between the water storage chamber and the hydrolysis reaction chamber to guide the aqueous solution in the water storage chamber into the hydrolysis reaction chamber; The metal hydride hydrogen storage bottle is arranged in the water storage cavity; The housing of the hydrogen storage device is provided with a first gas outlet connected to the metal hydride hydrogen storage bottle and a second gas outlet connected to the hydrolysis reaction chamber, and the first gas outlet and the second gas outlet are connected to the hydrogen transmission pipeline respectively.

2. An integrated composite solid-state hydrogen storage device according to claim 1, characterized in that: The guide structure is a fluid distributor, which includes a guide pipe and a porous guide ring connected to the guide pipe and arranged in multiple layers in the upper and lower directions at intervals. The guide pipe passes through the phase change material filling area and the upper end of the guide pipe is flush with the bottom of the water storage chamber; the porous guide ring is located in the hydrolysis reaction chamber, and a water flow control valve is provided on the guide pipe.

3. An integrated composite solid-state hydrogen storage device according to claim 2, characterized in that: Each layer of porous guide rings is provided with multiple ones, which are arranged at intervals along the radial direction of the guide pipe and whose outer diameters gradually increase from close to the guide pipe to away from the guide pipe. The guide pipe is connected to multiple connecting pipes arranged in the circumferential direction of the guide pipe at the position corresponding to each layer of porous guide rings. The connecting pipes are fixedly connected to each porous guide ring of the corresponding layer to connect the guide pipe with each porous guide ring.

4. An integrated composite solid-state hydrogen storage device according to any one of claims 1 to 3, characterized in that: The cavity wall of the water storage cavity and the cavity wall of the hydrolysis reaction cavity are both heat-spreading plates.

5. An integrated composite solid-state hydrogen storage device according to any one of claims 1 to 3, characterized in that: It is defined that the first gas outlet is connected to the first hydrogen transmission pipeline, the second gas outlet is connected to the second hydrogen transmission pipeline, and the outlet of the first hydrogen transmission pipeline intersects with the outlet of the second hydrogen transmission pipeline for connecting to hydrogen-using equipment.

6. The integrated composite solid-state hydrogen storage device according to claim 5, characterized in that: A hydrolysis hydrogen gas conduit is connected between the hydrolysis reaction chamber and the first gas outlet, a filter element is provided at the outlet of the hydrolysis hydrogen gas conduit, a dryer, a one-way valve and a first pressure reducing valve are sequentially provided on the first hydrogen transmission pipeline, and a second pressure reducing valve is provided on the second hydrogen transmission pipeline.

7. An integrated composite solid-state hydrogen storage device according to claim 6, characterized in that: A three-way valve is also provided on the second hydrogen transmission pipeline upstream of the second pressure reducing valve, and one of the valve ports of the three-way valve is used for connecting to a hydrogen filling source.

8. The integrated composite solid hydrogen storage device according to claim 6, characterized in that: A hydrogen buffer bottle is also arranged in the water storage cavity, a third gas outlet connected with the hydrogen buffer bottle is arranged on the shell of the hydrogen storage device, and a buffer gas path is connected between the third gas outlet and the first gas outlet.

9. An integrated composite solid-state hydrogen storage device according to any one of claims 1 to 3, characterized in that: The bottom of the hydrogen storage device housing is detachably connected with a sealing flange, and the bottom of the sealing flange is provided with a plurality of supporting columns, and each supporting column is mounted with a walking wheel.

10. An integrated composite solid-state hydrogen storage device according to any one of claims 1 to 3, characterized in that: The shell of the hydrogen storage device is provided with a liquid injection port which is communicated with the water storage cavity.

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