Solid hydrogen storage device capable of enhancing heat exchange

Abstract

The invention relates to the technical field of solid hydrogen storage, and provides a solid hydrogen storage device for enhancing heat exchange. The solid hydrogen storage device capable of enhancing heat exchange comprises a tank body assembly and a circulation driving mechanism. The tank body assembly is provided with a storage cavity, a first heat exchange channel, a first heat exchange medium inflow pipe and a heat exchange medium outflow pipe; the circulation driving mechanism is provided with a gas collecting channel and a gas collecting hole, one end of the gas collecting channel is located in the storage cavity, the other end of the gas collecting channel extends out of the tank assembly, the gas collecting hole communicates with the storage cavity and the gas collecting channel, and the circulation driving mechanism is suitable for circularly stirring the solid hydrogen storage material in the storage cavity. The circulation driving mechanism can circularly stir the solid hydrogen storage material in the storage cavity, so that the solid hydrogen storage material circularly moves to the position adjacent to the first heat exchange channel, the temperature of the solid hydrogen storage material is uniform, the heat exchange efficiency of a heat exchange medium in the first heat exchange channel and the solid hydrogen storage material is improved, and the heat exchange efficiency of the solid hydrogen storage material is improved. And the hydrogen absorption and desorption rate of the solid hydrogen storage device is further improved.

Description

Technical Field

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

[0002] Solid-state hydrogen storage technology based on metal hydrides is considered a highly promising hydrogen storage method due to its high hydrogen storage density and high safety. Since solid-state hydrogen storage materials typically require certain temperature and pressure conditions to undergo hydrogen absorption and desorption reactions, and the reaction is accompanied by thermal effects, solid-state hydrogen storage devices must possess strong heat exchange capabilities to ensure that the solid-state hydrogen storage material filled within can receive and remove heat in a timely manner during the hydrogen absorption and desorption reactions, thereby achieving a high hydrogen absorption and desorption rate.

[0003] The existing technology uses a fixed number of heat exchange tubes in solid-state hydrogen storage devices to achieve temperature control of the solid-state hydrogen storage material in the tank during the hydrogen absorption and desorption process. This heat exchange method has a limited heat exchange rate, resulting in slow heating and cooling of the solid-state hydrogen storage material, causing slow hydrogen absorption and desorption reaction rates. It is also prone to problems such as uneven temperature of the hydrogen storage material, ultimately resulting in a low hydrogen absorption and desorption rate of the solid-state hydrogen storage device. Summary of the Invention

[0004] The present invention provides a solid-state hydrogen storage device with enhanced heat exchange, which is used to solve the problems of limited heat exchange rate and uneven temperature of hydrogen storage materials in solid-state hydrogen storage devices in the prior art, resulting in slow hydrogen absorption and desorption reaction rates.

[0005] The present invention provides a solid-state hydrogen storage device with enhanced heat exchange, comprising:

[0006] A tank assembly, wherein the tank assembly is provided with a storage cavity, a first heat exchange channel, a first heat exchange medium inlet pipe, and a heat exchange medium outlet pipe, wherein the storage cavity is used to store solid hydrogen storage material, the first heat exchange medium inlet pipe and the heat exchange medium outlet pipe are in communication with the first heat exchange channel, and the storage cavity is arranged adjacent to the first heat exchange channel;

[0007] A circulation drive mechanism is arranged in the tank assembly, and the circulation drive mechanism is provided with a gas collecting channel and a gas collecting hole. One end of the gas collecting channel is located in the storage chamber, and the other end extends to the outside of the tank assembly. The gas collecting hole is located in the storage chamber, and the gas collecting hole connects the storage chamber and the gas collecting channel. The circulation drive mechanism is suitable for circulatory stirring of the solid hydrogen storage material in the storage chamber.

[0008] According to a solid-state hydrogen storage device with enhanced heat exchange provided by the present invention, the tank assembly includes an inner tank and a middle tank, the middle tank is sleeved on the outer side of the inner tank, and a discharge port is provided on the top of the inner tank;

[0009] The storage chamber includes a first chamber located inside the inner tank and a second chamber located between the inner tank and the middle tank, the upper portion of the first chamber being connected to the upper portion of the second chamber through the discharge port, and the bottom of the first chamber being connected to the bottom of the second chamber;

[0010] The circulation driving mechanism is suitable for driving the solid hydrogen storage material in the first chamber to move upward from the bottom of the first chamber to the top of the first chamber, and enter the second chamber through the discharge port.

[0011] According to a solid-state hydrogen storage device with enhanced heat exchange provided by the present invention, a first spiral guide vane is provided in the second chamber, the inner side of the first spiral guide vane is fixedly connected to the inner tank, and the outer side is fixedly connected to the middle tank.

[0012] According to a solid-state hydrogen storage device with enhanced heat exchange provided by the present invention, a material guide section is provided at the lower portion of the middle tank, and the size of the material guide section gradually decreases from top to bottom.

[0013] According to a solid-state hydrogen storage device with enhanced heat exchange provided by the present invention, the tank assembly further includes:

[0014] an outer tank, the outer tank being sleeved on the outer side of the middle tank, and the first heat exchange channel being provided between the outer tank and the middle tank;

[0015] The first heat exchange medium inflow pipe is arranged at the top of the outer tank, and the heat exchange medium outflow pipe is arranged at the bottom of the outer tank.

[0016] According to a solid-state hydrogen storage device with enhanced heat exchange provided by the present invention, a second spiral guide vane is provided between the outer tank and the middle tank, the inner side of the spiral guide vane is fixedly connected to the middle tank, and the outer side of the second spiral guide vane is fixedly connected to the outer tank, and the second spiral guide vane divides the first heat exchange channel into a spiral channel structure.

[0017] According to a solid-state hydrogen storage device with enhanced heat exchange provided by the present invention, the circulation drive mechanism includes:

[0018] a spiral lifting member, coaxially arranged with the tank assembly and rotatably connected with the tank assembly, the spiral lifting member being provided with the gas collecting hole and the gas collecting channel;

[0019] A driving member is connected to the spiral lifting member and is used to drive the spiral lifting member to rotate.

[0020] According to a solid-state hydrogen storage device with enhanced heat exchange provided by the present invention, the spiral lifting member is provided with a second heat exchange channel.

[0021] According to a solid-state hydrogen storage device with enhanced heat exchange provided by the present invention, the spiral lifting member includes:

[0022] a hydrogen gas collecting pipe, which passes through the upper portion of the tank assembly and is rotatably connected to the tank assembly; the inner side of the hydrogen gas collecting pipe forms the gas collecting channel; the side wall of the hydrogen gas collecting pipe located within the tank assembly is provided with a plurality of gas collecting holes; the upper end of the hydrogen gas collecting pipe forms a hydrogen outlet, and the lower end is provided with an end plate;

[0023] an upper collecting pipe, sleeved on the inner side of the hydrogen collecting pipe, wherein the upper end of the upper collecting pipe is provided with a heat exchange medium inlet hole and is fixedly connected to the driving member, and the outer side of the upper collecting pipe is fixedly connected to the inner wall of the hydrogen collecting pipe via a connecting member;

[0024] An upper manifold is located in the tank assembly, radially penetrates the hydrogen collecting pipe, and is connected to the upper manifold;

[0025] a lower collecting pipe, passing through the bottom of the tank assembly, being rotatably connected to the tank assembly, passing through the end plate, and being fixedly connected to the end plate;

[0026] A lower manifold is located in the tank assembly, radially penetrates the hydrogen collecting pipe, and is connected to the lower manifold;

[0027] a spiral coil located in the tank assembly, spirally wound around the outside of the hydrogen manifold, with its upper end connected to the upper manifold and its lower end connected to the lower manifold, and provided with spiral fins;

[0028] The inner holes of the upper collecting pipe, the upper branching pipe, the spiral coil, the lower branching pipe and the lower collecting pipe are connected to form the second heat exchange channel.

[0029] According to a solid-state hydrogen storage device with enhanced heat exchange provided by the present invention, the spiral lifting member further includes:

[0030] A hydrogen sealing ferrule is sleeved on the outer side of the upper end of the hydrogen gas collecting pipe and is rotatably connected to the hydrogen gas collecting pipe;

[0031] A hydrogen discharge pipe is fixedly mounted on the hydrogen sealing ferrule and communicates with the inner cavity of the hydrogen sealing ferrule;

[0032] A heat exchange medium sealing sleeve is rotatably connected to the upper end of the upper collecting pipe and is sleeved on the outer side of the heat exchange medium inlet hole;

[0033] The second heat exchange medium inflow pipe is fixedly arranged on the heat exchange medium sealing sleeve and communicated with the inner cavity of the heat exchange medium sealing sleeve.

[0034] The solid-state hydrogen storage device with enhanced heat exchange provided by the present invention has a circulation drive mechanism that can circulate and stir the solid-state hydrogen storage material in the storage chamber, so that the solid-state hydrogen storage material circulates to a position adjacent to the first heat exchange channel, thereby making the temperature of the solid-state hydrogen storage material uniform, improving the heat exchange efficiency between the heat exchange medium in the first heat exchange channel and the solid-state hydrogen storage material, and thereby improving the hydrogen absorption and desorption rate of the solid-state hydrogen storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 This is a cross-sectional view of a solid-state hydrogen storage device with enhanced heat exchange provided by the present invention;

[0037] Figure 2 This is a schematic diagram of the matching structure of the inner tank and the first spiral guide vane in a solid-state hydrogen storage device with enhanced heat exchange provided by the present invention;

[0038] Figure 3 This is a schematic diagram of the matching structure of the middle tank and the second spiral guide vane in a solid-state hydrogen storage device with enhanced heat exchange provided by the present invention;

[0039] Figure 4 This is a schematic diagram of the overall structure of a spiral lifting member in a solid-state hydrogen storage device with enhanced heat exchange provided by the present invention;

[0040] Figure markings: 1. inner tank; 2. discharge port; 3. first spiral guide vane; 4. middle tank; 5. second spiral guide vane; 6. outer tank; 7. first heat exchange medium inlet pipe; 8. heat exchange medium outlet pipe; 9. upper collecting pipe; 10. hydrogen collecting pipe; 11. upper branch pipe; 12. spiral coil; 13. spiral fin; 14. lower branch pipe; 15. lower collecting pipe; 16. collecting hole; 17. heat exchange medium inlet hole; 18. hydrogen outlet; 19. hydrogen sealing ferrule; 20. hydrogen discharge pipe; 21. heat exchange medium sealing ferrule; 22. second heat exchange medium inlet pipe; 23. drive shaft; 24. drive member. DETAILED DESCRIPTION

[0041] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0042] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0043] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0044] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0045] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0046] The following combination Figures 1 to 4 A solid-state hydrogen storage device with enhanced heat exchange according to an embodiment of the present invention is described.

[0047] The solid-state hydrogen storage device with enhanced heat exchange of an embodiment of the invention includes a tank assembly and a circulation drive mechanism. The tank assembly is provided with a storage chamber, a first heat exchange channel, a first heat exchange medium inflow pipe 7 and a heat exchange medium outflow pipe 8. The storage chamber is used to store solid-state hydrogen storage materials. The first heat exchange medium inflow pipe 7 and the heat exchange medium outflow pipe 8 are connected to the first heat exchange channel. The storage chamber is arranged adjacent to the first heat exchange channel. The circulation drive mechanism is arranged in the tank assembly. The circulation drive mechanism is provided with an air collecting channel and an air collecting hole 16. One end of the air collecting channel is located in the storage chamber, and the other end extends to the outside of the tank assembly. The air collecting hole 16 is located in the storage chamber. The air collecting hole 16 connects the storage chamber and the air collecting channel. The circulation drive mechanism is suitable for circulating and stirring the solid-state hydrogen storage material in the storage chamber.

[0048] In this embodiment, the heat exchange medium can enter the first heat exchange channel through the first heat exchange medium inlet pipe 7, and further flow out through the heat exchange medium outlet pipe 8. During this process, the heat exchange medium can exchange heat with the solid hydrogen storage material located in the storage cavity in the first heat exchange channel.

[0049] In this embodiment, the cyclic agitation of the solid-state hydrogen storage material within the storage chamber refers to agitating the solid-state hydrogen storage material so that it circulates within the storage chamber. When the cyclic drive mechanism is in operation, the cyclic agitation of the solid-state hydrogen storage material within the storage chamber causes the solid-state hydrogen storage material to circulate to a position near the first heat exchange channel, thereby uniformizing the temperature of the solid-state hydrogen storage material, improving the heat exchange efficiency between the heat exchange medium within the first heat exchange channel and the solid-state hydrogen storage material, and thereby increasing the hydrogen absorption and desorption rate of the solid-state hydrogen storage device.

[0050] In some embodiments of the present invention, the tank assembly includes an inner tank 1 and a middle tank 4, the middle tank 4 is arranged on the outside of the inner tank 1, and a discharge port 2 is provided at the top of the inner tank 1; the storage chamber includes a first chamber located on the inner side of the inner tank 1 and a second chamber located between the inner tank 1 and the middle tank 4, the upper part of the first chamber is connected to the upper part of the second chamber through the discharge port 2, and the bottom of the first chamber is connected to the bottom of the second chamber; the circulation drive mechanism is suitable for driving the solid hydrogen storage material in the first chamber to move upward from the bottom of the first chamber to the top of the first chamber, and enter the second chamber through the discharge port 2.

[0051] Optionally, inner tank 1 is cylindrical, with a top plate fixedly connected to the inner tank wall, and an open bottom. A through hole is provided in the center of the top plate for mounting a circulation drive mechanism. Inner tank 1 is filled with solid hydrogen storage material, and four discharge ports 2 are provided at the top of inner tank 1 for discharging the solid hydrogen storage material from the interior of inner tank 1.

[0052] Optionally, the middle tank 4 is cylindrical in shape and has a top plate and a bottom plate, which are tightly fixed to the wall of the middle tank 4. A through hole is provided in the center of each of the top and bottom plates for mounting a circulating drive mechanism.

[0053] In some embodiments of the present invention, a first spiral guide blade 3 is provided in the second chamber. The inner side of the first spiral guide blade 3 is fixedly connected to the inner tank 1 , and the outer side of the first spiral guide blade 3 is fixedly connected to the middle tank 4 .

[0054] In this embodiment, the outer wall of the inner tank 1 is tightly fixedly connected to the inner edge of the first spiral guide vane 3, and the inner wall of the middle tank 4 is tightly fixedly connected to the outer edge of the first spiral guide vane 3. The inner wall of the middle tank 4 and the outer wall of the inner tank 1 form a space for accommodating the solid hydrogen storage material discharged from the inner tank 1, so that the solid hydrogen storage material discharged from the discharge port 2 moves spirally downward along the first spiral guide vane 3.

[0055] In some embodiments of the present invention, a material guiding section is provided at the lower portion of the middle tank 4 , and the size of the material guiding section gradually decreases from top to bottom.

[0056] In this embodiment, the material guide section at the bottom of the middle tank 4 is a tapered structure, which is conducive to gathering the solid hydrogen storage material to the bottom of the inner tank 1, so as to facilitate its upward movement under the drive of the circulation drive mechanism.

[0057] In some embodiments of the present invention, the tank assembly also includes an outer tank 6, which is arranged on the outside of the middle tank 4, and a first heat exchange channel is provided between the outer tank 6 and the middle tank 4; the first heat exchange medium inlet pipe 7 is provided at the top of the outer tank 6, and the heat exchange medium outlet pipe 8 is provided at the bottom of the outer tank 6.

[0058] Optionally, the outer tank 6 is cylindrical in shape, with a top plate and a bottom plate respectively provided on the top and bottom and tightly fixedly connected to the wall of the outer tank 6. The top plate and the bottom plate of the outer tank 6 are both provided with through holes in the center for installing the circulation drive mechanism.

[0059] Optionally, a second spiral guide blade 5 is provided between the outer tank 6 and the middle tank 4, the inner side of the second spiral guide blade 5 is fixedly connected to the middle tank 4, and the outer side of the second spiral guide blade 5 is fixedly connected to the outer tank 6, and the second spiral guide blade 5 divides the first heat exchange channel into a spiral channel structure.

[0060] In this embodiment, the outer wall of the middle tank 4 is tightly fixedly connected to the inner edge of the second spiral guide vane 5, and the inner wall of the outer tank 6 is tightly fixedly connected to the outer edge of the second spiral guide vane 5. The inner wall of the outer tank 6 and the outer wall of the middle tank 4 form a closed space for accommodating the heat exchange medium. The outer tank 6 is provided with a first heat exchange medium inlet pipe 7 at the top and a first heat exchange medium outlet pipe 8 at the bottom. The heat exchange medium enters the closed space between the outer tank 6 and the middle tank 4 through the first heat exchange medium inlet pipe 7, then flows downward along the second spiral guide vane 5 and out of the first heat exchange medium outlet pipe 8 to complete the heat exchange process between the heat exchange medium and the solid hydrogen storage material.

[0061] In some embodiments of the present invention, the circulation drive mechanism includes a spiral lifting member and a driving member 24. The spiral lifting member is coaxially arranged with the tank assembly and is rotationally connected to the tank assembly. The spiral lifting member is provided with a gas collection hole 16 and a gas collection channel; the driving member 24 is connected to the spiral lifting member and is used to drive the spiral lifting member to rotate.

[0062] In this embodiment, the driving member 24 can be a rotary motor, whose motor shaft is fixedly connected to the spiral lifting member via the drive shaft 23. When the rotary motor is in operation, it can drive the spiral lifting member to rotate, thereby driving the circulation of the solid hydrogen storage material. Hydrogen can enter the storage chamber through the air inlet channel and gas collection hole 16 on the spiral lifting member, and hydrogen in the storage chamber can also flow out through the gas collection hole 16 and air inlet channel on the spiral lifting member.

[0063] In some embodiments of the present invention, the spiral lifting member is provided with a second heat exchange channel, which is used to introduce heat exchange medium, so that the spiral lifting member can also exchange heat with the solid hydrogen storage material, further improving the heat exchange efficiency and heat exchange uniformity.

[0064] In some embodiments of the present invention, the spiral lifting member includes a hydrogen collecting pipe 10, an upper collecting pipe 9, an upper branch pipe 11, a lower collecting pipe 15, a lower branch pipe 14 and a spiral coil 12. The hydrogen collecting pipe 10 passes through the upper part of the tank assembly and is rotatably connected to the tank assembly. The inner side of the hydrogen collecting pipe 10 forms a gas collecting channel. The side wall of the hydrogen collecting pipe 10 located in the tank assembly is provided with a plurality of collecting holes 16. The upper end of the hydrogen collecting pipe 10 forms a hydrogen outlet 18, and the lower end is provided with an end plate; the upper collecting pipe 9 is sleeved on the inner side of the hydrogen collecting pipe 10, and the upper end of the upper collecting pipe 9 is provided with a heat exchange medium inlet hole 17 and is fixedly connected to the driving member 24. The outer side of the upper collecting pipe 9 is fixedly connected to the inner wall of the hydrogen collecting pipe 10 through a connecting member; the upper branch pipe 11 is located in the tank assembly, radially penetrates the hydrogen collecting pipe 10, and is connected to the upper collecting pipe 9; the lower The collecting pipe 15 passes through the bottom of the tank assembly and is rotatably connected to the tank assembly. The lower collecting pipe 15 passes through the end plate at the bottom of the hydrogen collecting pipe 10, and the outer side of the lower collecting pipe 15 is sealed and fixedly connected to the end plate; the lower branch pipe 14 is located in the tank assembly, radially penetrates the hydrogen collecting pipe 10, and is connected to the lower collecting pipe 15; the spiral coil 12 is located in the tank assembly, spirally wound around the outer side of the hydrogen collecting pipe 10, the upper end is connected to the upper branch pipe 11, and the lower end is connected to the lower branch pipe 14, and the spiral coil 12 is provided with a spiral fin 13; the inner holes of the upper collecting pipe 9, the upper branch pipe 11, the spiral coil 12, the lower branch pipe 14 and the lower collecting pipe 15 are connected to form a second heat exchange channel.

[0065] In this embodiment, the upper manifold 9, lower manifold 15, and hydrogen manifold 10 in the spiral lifting member are coaxially arranged with the tank assembly. The upper manifold 9 and lower manifold 15 have smaller diameters than the hydrogen manifold 10 and are respectively sleeved above and below the interior of the hydrogen manifold 10. The vertical distance between the top of the upper manifold 9 and the bottom of the lower manifold 15 is greater than the length of the hydrogen manifold 10, meaning that portions of both the upper manifold 9 and the lower manifold 15 extend out of the hydrogen manifold 10. A horizontally arranged upper manifold 11 is fixedly mounted on the lower sidewall of the upper manifold 9, while a horizontally arranged lower manifold 14 is fixedly mounted on the upper sidewall of the lower manifold 15. The upper manifold 11 and the lower manifold 14 are connected by a plurality of spiral coils 12, each of which is equipped with spiral fins 13. Multiple heat exchange medium inlet holes 17 are provided at the upper portion of the upper manifold 9. The interiors of the upper collecting pipe 9, the upper branching pipe 11, the spiral coil 12, the lower branching pipe 14, and the lower collecting pipe 15 form a heat exchange medium flow channel. The heat exchange medium enters the upper collecting pipe 9 through the heat exchange medium inlet 17, then enters the upper branching pipe 11, the spiral coil 12, and the lower branching pipe 14, and finally flows out through the lower collecting pipe 15. The top of the hydrogen collecting pipe 10 is an open structure, which serves as the hydrogen outlet 18. The bottom is tightly and fixedly connected to the side wall of the lower collecting pipe 15 through the bottom plate of the hydrogen collecting pipe 10. The side wall of the hydrogen collecting pipe 10 is provided with multiple collecting holes 16. The hydrogen released by the solid hydrogen storage material enters the hydrogen collecting pipe 10 through the collecting holes 16 and then flows out upward through the hydrogen outlet 18. The overall diameter of the spiral lifting member is slightly smaller than the inner diameter of the inner tank 1 and is installed inside the inner tank 1. The spiral lifting member is arranged coaxially with the inner tank 1, the middle tank 4 and the outer tank 6, and is sealed between the through holes of the top plate and the bottom plate of the inner tank 1, the middle tank 4 and the outer tank 6. The spiral lifting member can rotate in the inner tank 1.

[0066] Optionally, the connecting piece between the upper collecting pipe 9 and the hydrogen collecting pipe 10 can be a plurality of rods arranged circumferentially around the upper collecting pipe 9 and extending radially along the upper collecting pipe 9, so as to realize the connection between the upper collecting pipe 9 and the hydrogen collecting pipe 10 and avoid the connection structure between the upper collecting pipe 9 and the hydrogen collecting pipe 10 affecting the flow of hydrogen.

[0067] It can be understood that in this embodiment, the upper collecting pipe 9, the lower collecting pipe 15 and the hydrogen collecting pipe 10 are not connected, which can prevent the heat exchange medium from flowing into the hydrogen collecting pipe 10 or the hydrogen from flowing into the upper collecting pipe 9, the lower collecting pipe 15.

[0068] In some embodiments of the present invention, the spiral lifting member further includes a hydrogen sealing ferrule 19, a hydrogen discharge pipe 20, a heat exchange medium sealing ferrule 21, and a second heat exchange medium inlet pipe 22. The hydrogen sealing ferrule 19 is sleeved on the outer side of the upper end of the hydrogen collecting pipe 10 and is rotatably connected to the hydrogen collecting pipe 10; the hydrogen discharge pipe 20 is fixedly mounted on the hydrogen sealing ferrule 19 and communicates with the inner cavity of the hydrogen sealing ferrule 19; the heat exchange medium sealing ferrule 21 is rotatably connected to the upper end of the upper collecting pipe 9 and is sleeved on the outer side of the heat exchange medium inlet hole 17; the second heat exchange medium inlet pipe 22 is fixedly mounted on the heat exchange medium sealing ferrule 21 and communicates with the inner cavity of the heat exchange medium sealing ferrule 21.

[0069] Optionally, the hydrogen sealing ferrule 19 is cylindrical as a whole, has a flow space inside, and is provided with a top plate of the hydrogen sealing ferrule 19 and a bottom plate of the hydrogen sealing ferrule 19 at the top and bottom, respectively. The top plate of the hydrogen sealing ferrule 19 is provided with a through hole for passing through the upper collecting pipe 9 and sealing with the upper collecting pipe 9, and the bottom plate of the hydrogen sealing ferrule 19 is provided with a through hole for passing through the hydrogen collecting pipe 10 and sealing with the hydrogen collecting pipe 10. The hydrogen sealing ferrule 19 is integrally sleeved on the outside of the hydrogen outlet 18, and a hydrogen discharge pipe 20 is provided on the side wall. The hydrogen entering the hydrogen collecting pipe 10 through the collecting hole 16 flows into the interior of the hydrogen sealing ferrule 19 through the hydrogen outlet 18 and is then discharged through the hydrogen discharge pipe 20, thereby realizing the supply of hydrogen.

[0070] Optionally, the heat exchange medium sealing ferrule 21 is cylindrical in shape as a whole, with a flow space inside. The top and bottom are respectively provided with a top plate of the heat exchange medium sealing ferrule 21 and a bottom plate of the heat exchange medium sealing ferrule 21. The top plate of the heat exchange medium sealing ferrule 21 is provided with a through hole for passing through the drive shaft 23 connected below the driver 24 and being in a sealed rotational connection with the drive shaft 23. The bottom plate of the heat exchange medium sealing ferrule 21 is provided with a through hole for passing through the upper manifold 9 and being in a sealed rotational connection with the upper manifold 9. The heat exchange medium sealing ferrule 21 is integrally sleeved on the connection between the drive shaft 23 and the upper manifold 9 and on the outside of the multiple heat exchange medium inlet holes 17 at the upper position of the upper manifold 9. The side wall is provided with a second heat exchange medium inlet pipe 22. The heat exchange medium flows into the heat exchange medium sealing sleeve 21 through the second heat exchange medium inlet pipe 22, enters the upper collecting pipe 9 through the heat exchange medium inlet hole 17, and then flows out through the upper branch pipe 11, the spiral coil 12, the lower branch pipe 14, and the lower collecting pipe 15 in sequence, completing the heat exchange process with the solid hydrogen storage material stored inside the inner tank 1.

[0071] For ease of understanding, the working process of the solid-state hydrogen storage device with enhanced heat exchange according to an embodiment of the present invention is introduced below.

[0072] The hydrogen release process of the solid-state hydrogen storage device with enhanced heat exchange in this embodiment is as follows:

[0073] The inner tank 1 is filled with solid-state hydrogen storage material. The high-temperature heat exchange medium outside the enhanced heat exchange solid-state hydrogen storage device is connected to the first heat exchange medium inlet pipe 7 and the second heat exchange medium inlet pipe 22, respectively. The high-temperature heat exchange medium flowing in through the first heat exchange medium inlet pipe 7 enters the enclosed space between the outer tank 6 and the middle tank 4, then flows downward along the second spiral guide vanes 5 and out through the first heat exchange medium outflow pipe 8. During this flow, the high-temperature heat exchange medium heats the walls of the middle tank 4. Due to the presence of the second spiral guide vanes 5, the high-temperature heat exchange medium flows a longer distance, ensuring more efficient heat exchange. The high-temperature heat exchange medium flowing in through the second heat exchange medium inlet pipe 22 enters the heat exchange medium sealing sleeve 21, then enters the upper manifold 9, upper branch manifold 11, spiral coil 12, and lower branch manifold 14 of the spiral lifting member in sequence through the heat exchange medium inlet hole 17, and finally out through the lower manifold 15. During this flow, the high-temperature heat exchange medium heats the solid-state hydrogen storage material filled in the inner tank 1. Turn on the driving member 24, and the driving member 24 drives the spiral lifting member to rotate clockwise through the driving shaft 23. At this time, the spiral coil 12 and the spiral fins 13 in the spiral lifting member play a feeding role from bottom to top on the solid hydrogen storage material, driving the solid hydrogen storage material to move from the lower part of the inner tank 1 to the upper part. The solid hydrogen storage material reaching the upper part is discharged from the inner tank 1 through the multiple discharge ports 2 on the upper part of the inner tank 1, falls into the space between the inner tank 1 and the middle tank 4, falls back to the bottom of the inner tank 1 along the first spiral guide blade 3, and is again sent to the discharge port 2 on the upper part of the inner tank 1 by the spiral coil 12 and the spiral fins 13, thereby realizing the circulation of the solid hydrogen storage material between the inner tank 1 and the middle tank 4, and the heated tank wall of the middle tank 4 and the spiral coil 12 and the spiral fins 13 will fully exchange heat with the solid hydrogen storage material. After the solid hydrogen storage material is heated to the required hydrogen release temperature, it begins to release a large amount of hydrogen. The released hydrogen enters the hydrogen collecting pipe 10 through multiple collecting holes 16, then flows upward and enters the hydrogen sealing sleeve 19 through the hydrogen outlet 18, and is finally discharged through the hydrogen discharge pipe 20 to realize hydrogen supply.

[0074] The hydrogen absorption process of the solid-state hydrogen storage device with enhanced heat exchange in this embodiment is as follows:

[0075] The inner tank 1 is filled with solid hydrogen storage material. The external high-temperature heat exchange medium is connected to the first heat exchange medium inlet pipe 7 and the second heat exchange medium inlet pipe 22 respectively, and flows out through the first heat exchange medium outflow pipe 8 and the lower collecting pipe 15 in the spiral lifting member respectively. Turn on the driving member 24, and the driving member 24 drives the spiral lifting member to rotate clockwise through the driving shaft 23, driving the solid hydrogen storage material to circulate between the inner tank 1 and the middle tank 4 and be heated. After the solid hydrogen storage material is heated to the required hydrogen absorption temperature, hydrogen is injected into the hydrogen sealing sleeve 19 through the hydrogen discharge pipe 20, and then the injected hydrogen enters the hydrogen collecting pipe 10 through the hydrogen outlet 18, and is sprayed into the inner tank 1 through multiple collecting holes 16 to react with the solid hydrogen storage material to absorb hydrogen, thereby realizing hydrogen storage.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A solid-state hydrogen storage device with enhanced heat exchange, characterized in that: include: A tank assembly, wherein the tank assembly is provided with a storage cavity, a first heat exchange channel, a first heat exchange medium inlet pipe, and a heat exchange medium outlet pipe, wherein the storage cavity is used to store solid hydrogen storage material, the first heat exchange medium inlet pipe and the heat exchange medium outlet pipe are in communication with the first heat exchange channel, and the storage cavity is arranged adjacent to the first heat exchange channel; A circulation drive mechanism is arranged in the tank assembly, and the circulation drive mechanism is provided with a gas collecting channel and a gas collecting hole. One end of the gas collecting channel is located in the storage chamber, and the other end extends to the outside of the tank assembly. The gas collecting hole is located in the storage chamber, and the gas collecting hole connects the storage chamber and the gas collecting channel. The circulation drive mechanism is suitable for circulatory stirring of the solid hydrogen storage material in the storage chamber.

2. The solid-state hydrogen storage device with enhanced heat exchange according to claim 1, characterized in that: The tank assembly includes an inner tank and a middle tank, the middle tank is sleeved on the outer side of the inner tank, and a discharge port is provided on the top of the inner tank; The storage chamber includes a first chamber located inside the inner tank and a second chamber located between the inner tank and the middle tank, the upper portion of the first chamber being connected to the upper portion of the second chamber through the discharge port, and the bottom of the first chamber being connected to the bottom of the second chamber; The circulation driving mechanism is suitable for driving the solid hydrogen storage material in the first chamber to move upward from the bottom of the first chamber to the top of the first chamber, and enter the second chamber through the discharge port.

3. The solid-state hydrogen storage device with enhanced heat exchange according to claim 2, characterized in that: A first spiral guide vane is provided in the second chamber. The inner side of the first spiral guide vane is fixedly connected to the inner tank, and the outer side of the first spiral guide vane is fixedly connected to the middle tank.

4. The solid-state hydrogen storage device with enhanced heat exchange according to claim 2 or 3, characterized in that: A material guiding section is provided at the lower portion of the middle tank, and the size of the material guiding section gradually decreases from top to bottom.

5. The solid-state hydrogen storage device with enhanced heat exchange according to claim 2, characterized in that: The tank assembly also includes: an outer tank, the outer tank being sleeved on the outer side of the middle tank, and the first heat exchange channel being provided between the outer tank and the middle tank; The first heat exchange medium inflow pipe is arranged at the top of the outer tank, and the heat exchange medium outflow pipe is arranged at the bottom of the outer tank.

6. The solid-state hydrogen storage device with enhanced heat exchange according to claim 5, characterized in that: A second spiral guide vane is provided between the outer tank and the middle tank, the inner side of the spiral guide vane is fixedly connected to the middle tank, the outer side of the second spiral guide vane is fixedly connected to the outer tank, and the second spiral guide vane divides the first heat exchange channel into a spiral channel structure.

7. The solid-state hydrogen storage device with enhanced heat exchange according to claim 1, characterized in that: The circulating drive mechanism comprises: a spiral lifting member, coaxially arranged with the tank assembly and rotatably connected with the tank assembly, the spiral lifting member being provided with the gas collecting hole and the gas collecting channel; A driving member is connected to the spiral lifting member and is used to drive the spiral lifting member to rotate.

8. The solid-state hydrogen storage device with enhanced heat exchange according to claim 7, characterized in that: The spiral lifting member is provided with a second heat exchange channel.

9. The solid-state hydrogen storage device with enhanced heat exchange according to claim 8, characterized in that: The spiral lifting member comprises: a hydrogen gas collecting pipe, which passes through the upper portion of the tank assembly and is rotatably connected to the tank assembly; the inner side of the hydrogen gas collecting pipe forms the gas collecting channel; the side wall of the hydrogen gas collecting pipe located within the tank assembly is provided with a plurality of gas collecting holes; the upper end of the hydrogen gas collecting pipe forms a hydrogen outlet, and the lower end is provided with an end plate; an upper collecting pipe, sleeved on the inner side of the hydrogen collecting pipe, wherein the upper end of the upper collecting pipe is provided with a heat exchange medium inlet hole and is fixedly connected to the driving member, and the outer side of the upper collecting pipe is fixedly connected to the inner wall of the hydrogen collecting pipe via a connecting member; An upper manifold is located in the tank assembly, radially penetrates the hydrogen collecting pipe, and is connected to the upper manifold; a lower collecting pipe, passing through the bottom of the tank assembly, being rotatably connected to the tank assembly, passing through the end plate, and being fixedly connected to the end plate; A lower manifold is located in the tank assembly, radially penetrates the hydrogen collecting pipe, and is connected to the lower manifold; a spiral coil located in the tank assembly, spirally wound around the outside of the hydrogen manifold, with its upper end connected to the upper manifold and its lower end connected to the lower manifold, and provided with spiral fins; The inner holes of the upper collecting pipe, the upper branching pipe, the spiral coil, the lower branching pipe and the lower collecting pipe are connected to form the second heat exchange channel.

10. The solid-state hydrogen storage device with enhanced heat exchange according to claim 9, characterized in that: The spiral lifting member also includes: A hydrogen sealing ferrule is sleeved on the outer side of the upper end of the hydrogen gas collecting pipe and is rotatably connected to the hydrogen gas collecting pipe; A hydrogen discharge pipe is fixedly mounted on the hydrogen sealing ferrule and communicates with the inner cavity of the hydrogen sealing ferrule; A heat exchange medium sealing sleeve is rotatably connected to the upper end of the upper collecting pipe and is sleeved on the outer side of the heat exchange medium inlet hole; The second heat exchange medium inflow pipe is fixedly arranged on the heat exchange medium sealing sleeve and communicated with the inner cavity of the heat exchange medium sealing sleeve.

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