Hydrogen absorption and desorption solid hydrogen storage device

Abstract

The utility model provides a hydrogen absorption and desorption solid hydrogen storage device. The hydrogen absorption and desorption solid hydrogen storage device comprises a hydrogen storage tank inner cylinder and a jacket outer cylinder, the jacket outer cylinder surrounds the outer side wall of the hydrogen storage tank inner cylinder and is connected with the hydrogen storage tank inner cylinder, and a heat exchange medium channel is formed between the inner side wall of the jacket outer cylinder and the outer side wall of the hydrogen storage tank inner cylinder; a plurality of multi-channel heat exchange modules are arranged in the hydrogen storage tank inner cylinder and are sequentially arranged at intervals in the axial direction of the hydrogen storage tank inner cylinder; the heat exchange medium inlet is communicated with inlets of the multi-channel heat exchange modules through a heat exchange medium header pipe, outlets of the multi-channel heat exchange modules are communicated with the heat exchange medium channels, and a heat exchange medium outlet is formed in the jacket outer cylinder; the multi-channel heat exchange module can exchange heat with a hydrogen storage medium in the hydrogen storage tank inner cylinder, and a plurality of through holes are formed in the multi-channel heat exchange module. The outer jacket is arranged on the outer wall of the hydrogen storage tank, cold and hot media are collected through the outer jacket after passing through each multi-channel heat exchange module, efficient heat exchange is achieved, and then hydrogen absorption and hydrogen desorption are achieved.

Description

Technical Field

[0001] This utility model relates to the field of solid-state hydrogen storage technology, specifically to a hydrogen absorption and desorption solid-state hydrogen storage device, and more particularly to a high-efficiency hydrogen absorption and desorption solid-state hydrogen storage device. Background Technology

[0002] Among common hydrogen storage alloys, rare-earth-based hydrogen storage alloys, represented by LaNi5, have been most widely used due to their excellent thermodynamic and hydrogen absorption / desorption reaction kinetics. Solid-state hydrogen storage devices using LaNi5 as the hydrogen storage medium have been successfully applied in fuel cell distributed power generation systems and large-scale hydrogen purification and regeneration systems. Rare-earth-based hydrogen storage alloys operate under mild conditions, stably absorbing and releasing hydrogen at room temperature and pressure.

[0003] However, rare earth hydrogen storage alloys also share common problems with other types of hydrogen storage alloys. Due to their poor thermal conductivity, especially after multiple hydrogen absorption and desorption cycles, the alloy particles pulverize, causing the thermal conductivity to decrease further. This results in a large accumulation of heat released when the alloy bed absorbs hydrogen, and the external heat cannot be quickly conducted to the core when desorbing hydrogen, which in turn leads to a decline in the charging / decharging kinetics of the hydrogen storage device.

[0004] Therefore, improving the heat transfer performance of solid hydrogen storage devices is the key to promoting their development and application, and heat transfer research has become a current research hotspot.

[0005] Patent document CN119123302A discloses a solid-state hydrogen storage device, comprising: a transport container with several hydrogen storage tank mounting cavities; several hydrogen storage tanks, each installed within one of the hydrogen storage tank mounting cavities; and a solid-state hydrogen storage structure inside each hydrogen storage tank. The solid-state hydrogen storage structure includes: a heat-conducting pipe, several heat-conducting plates, and several solid-state hydrogen storage materials. The heat-conducting plates and solid-state hydrogen storage materials are stacked alternately from top to bottom. The heat-conducting pipe penetrates all the heat-conducting plates and solid-state hydrogen storage materials vertically and circumferentially surrounds them in a serpentine pattern. Several corresponding through holes are provided on both the heat-conducting plates and solid-state hydrogen storage materials. The heat-conducting medium inlet and outlet of the heat-conducting pipe extend out of the hydrogen storage tank. However, this patent document still suffers from drawbacks, such as the large accumulation of heat released during hydrogen absorption and the inability of external heat to be quickly conducted to the core during hydrogen release. Utility Model Content

[0006] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a solid hydrogen storage device that absorbs and releases hydrogen.

[0007] A solid hydrogen storage device for absorbing and releasing hydrogen according to the present invention includes: an inner cylinder of a hydrogen storage tank and an outer cylinder of a jacket.

[0008] The outer jacket is connected to the inner cylinder of the hydrogen storage tank around the outer side wall of the inner cylinder of the hydrogen storage tank, and a heat exchange medium channel is formed between the inner side wall of the outer jacket and the outer side wall of the inner cylinder of the hydrogen storage tank.

[0009] The inner cylinder of the hydrogen storage tank is provided with multiple multi-channel heat exchange modules, which are arranged sequentially at intervals along the axial direction of the inner cylinder of the hydrogen storage tank.

[0010] The heat exchange medium inlet is connected to the inlet of multiple multi-channel heat exchange modules through the heat exchange medium main pipe, the outlet of the multi-channel heat exchange module is connected to the heat exchange medium channel, and the jacket outer cylinder is provided with a heat exchange medium outlet connected to the heat exchange medium channel.

[0011] The multi-channel heat exchange module can exchange heat with the hydrogen storage medium inside the inner cylinder of the hydrogen storage tank. The multi-channel heat exchange module is provided with multiple perforations for the flow of hydrogen and the hydrogen storage medium.

[0012] Preferably, the multiple multi-channel heat exchange modules divide the interior of the hydrogen storage tank inner cylinder into multiple interconnected partitions along the axial direction of the inner cylinder.

[0013] Preferably, the multi-channel heat exchange module has a disc-shaped structure, and the edge of the disc-shaped structure is connected to the inner wall of the inner cylinder of the hydrogen storage tank.

[0014] The inlet of the multi-channel heat exchange module is located at the center of the disc-shaped structure, and the outlet of the multi-channel heat exchange module is located at the edge of the disc-shaped structure.

[0015] Preferably, the multiple multi-channel heat exchange modules are arranged in parallel with each other;

[0016] All of the aforementioned multi-channel heat exchange modules are arranged perpendicular to the axis of the inner cylinder of the hydrogen storage tank.

[0017] Preferably, the disc-shaped structure is provided with a cavity structure for the flow of heat exchange medium;

[0018] The heat exchange medium inlet is connected to the cavity structure through the heat exchange medium main pipe, and the heat exchange medium outlet is connected to the cavity structure.

[0019] Preferably, the heat exchange medium inlet is located near the bottom of the inner cylinder of the hydrogen storage tank, and the medium main pipe extends from bottom to top.

[0020] Preferably, the medium outlet is located at the bottom of the inner cylinder of the hydrogen storage tank.

[0021] Preferably, a hydrogen outlet is provided at the top of the inner cylinder of the hydrogen storage tank;

[0022] The bottom of the inner cylinder of the hydrogen storage tank is equipped with a hydrogen inlet.

[0023] Preferably, the multi-channel heat exchange module is provided with multiple vertical plates, which are used to increase the heat dissipation area.

[0024] Preferably, the heat exchange medium main pipe is configured as one or more pipes.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. To solve the above problems, this utility model includes a hydrogen storage container and internal temperature control components. The internal components are multiple radially arranged multi-channel heat exchange modules. The heat exchange modules are perpendicular to the axis of the hydrogen storage tank. The multi-channel heat exchange modules are connected to the hot and cold fluid main pipe arranged in the central axis. The hydrogen storage tank is divided by multiple multi-channel heat exchange modules. When temperature control is required during the hydrogen absorption and release process, the entire hydrogen storage tank can be cooled or heated to achieve a rapid and uniform temperature field.

[0027] 2. The hot and cold fluids of this utility model are transported to a multi-channel heat exchange module to exchange heat with the hydrogen storage medium alloy powder in the container. During the hydrogen absorption process, the alloy powder is cooled down, and during the hydrogen release process, the alloy powder is heated up, thereby achieving efficient heat exchange.

[0028] 3. This utility model divides the hydrogen storage tank into multiple interconnected independent partitions. Each multi-channel heat exchange module is connected to the central axis of the hydrogen storage tank. The hot and cold media are distributed to the multiple heat exchange modules through the main pipe arranged along the central axis of the hydrogen storage tank. The multi-channel heat exchange module in this utility model is designed with evenly distributed hydrogen channels and expansion and contraction channels for the hydrogen storage material. Attached Figure Description

[0029] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0030] Figure 1 A schematic diagram of a solid-state hydrogen storage device for absorbing and releasing hydrogen.

[0031] Figure 2 for Figure 1 A cross-sectional schematic diagram of the multi-channel heat exchange module along line AA.

[0032] The diagram shows:

[0033] Hydrogen inlet 1, multi-channel heat exchange module 7

[0034] Heat exchange medium inlet 2, perforation 8

[0035] Heat exchange medium outlet 3 Heat exchange medium main pipe 9

[0036] Hydrogen outlet 4, vertical plate 10

[0037] Hydrogen storage tank inner cylinder 5, heat exchange medium channel 11

[0038] Jacket outer cylinder 6 Detailed Implementation

[0039] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0040] Example 1

[0041] like Figure 1 and Figure 2 As shown, this embodiment provides a solid-state hydrogen storage device for hydrogen absorption and release, including: an inner cylinder 5 of a hydrogen storage tank and a jacketed outer cylinder 6; the jacketed outer cylinder 6 is arranged around the outer side wall of the inner cylinder 5 and connected to the inner cylinder 5, and a heat exchange medium channel 11 is formed between the inner side wall of the jacketed outer cylinder 6 and the outer side wall of the inner cylinder 5; a plurality of multi-channel heat exchange modules 7 are arranged inside the inner cylinder 5, and the plurality of multi-channel heat exchange modules 7 are arranged sequentially at intervals along the axial direction of the inner cylinder 5; the heat exchange medium inlet 2 is connected to the inlet of the plurality of multi-channel heat exchange modules 7 through the heat exchange medium main pipe 9, and the outlet of the multi-channel heat exchange module 7 is connected to the heat exchange medium channel 11; the jacketed outer cylinder 6 is provided with a heat exchange medium outlet 3 connected to the heat exchange medium channel 11; the multi-channel heat exchange modules 7 can exchange heat with the hydrogen storage medium in the inner cylinder 5, and the multi-channel heat exchange modules 7 are provided with a plurality of perforations 8 for the flow of hydrogen and the hydrogen storage medium.

[0042] The heat exchange medium inlet 2 allows either a cooling medium or a heating medium to pass through; it is the cooling / heating medium inlet. The heat exchange medium outlet 3 allows either a cooling medium or a heating medium to exit; it is the cooling / heating medium outlet. The heat exchange medium main pipe 9 allows either a cooling medium or a heating medium to flow through; it is the cooling / heating medium main pipe. The perforation 8 can be used as a hydrogen passage and an expansion / contraction channel for the hydrogen storage material; it is the gas flow / expansion port.

[0043] The heat exchange medium inlet 2 is located near the bottom of the inner cylinder 5 of the hydrogen storage tank, and the medium main pipe 9 extends from bottom to top. The medium outlet 3 is located at the bottom of the inner cylinder 5 of the hydrogen storage tank. The hydrogen outlet 4 is located at the top of the inner cylinder 5 of the hydrogen storage tank; the hydrogen inlet 1 is located at the bottom of the inner cylinder 5 of the hydrogen storage tank. The multi-channel heat exchange module 7 is provided with multiple vertical plates 10, which are used to increase the heat dissipation area. The heat exchange medium main pipe 9 is configured as one or more pipes.

[0044] Multiple multi-channel heat exchange modules 7 divide the interior of the hydrogen storage tank inner cylinder 5 into multiple interconnected zones along the axial direction of the inner cylinder 5. Each multi-channel heat exchange module 7 has a disc-shaped structure, with its edge connected to the inner wall of the hydrogen storage tank inner cylinder 5. The inlet of each multi-channel heat exchange module 7 is located at the center of the disc-shaped structure, and its outlet is located at the edge of the disc-shaped structure. The multiple multi-channel heat exchange modules 7 are arranged parallel to each other and are perpendicular to the axis of the hydrogen storage tank inner cylinder 5. A cavity structure for the flow of heat exchange medium is provided within the disc-shaped structure; the heat exchange medium inlet 2 is connected to the cavity structure via a heat exchange medium main pipe 9, and the heat exchange medium outlet 3 is also connected to the cavity structure.

[0045] Example 2

[0046] Those skilled in the art can understand this embodiment as a more specific description of Embodiment 1.

[0047] like Figure 1 and Figure 2 As shown, this embodiment provides a high-efficiency solid hydrogen storage device for hydrogen absorption and release, including: a hydrogen storage container and internal temperature control components, the internal components being multiple radially arranged multi-channel heat exchange modules.

[0048] The solid-state hydrogen storage device has a multi-channel heat exchange module connected to a centrally located hot and cold fluid manifold. Hot and cold fluids are delivered to the multi-channel heat exchange module to exchange heat with the hydrogen storage medium, alloy powder, within the container. During hydrogen absorption, the alloy powder is cooled. During hydrogen release, the alloy powder is heated.

[0049] The multi-channel heat exchange module inside the solid-state hydrogen storage device is a planar heat exchange unit with openings within a planar area. During hydrogen absorption and release, hydrogen gas flows and disperses through the openings. During hydrogen absorption, as the alloy powder expands in volume, it flows and expands through the openings.

[0050] The solid hydrogen storage device has an outer jacket on the outer wall of the hydrogen storage tank. The outer jacket is sealed and isolated from the hydrogen storage tank, but is connected to the internal multi-channel heat exchange module. During the hydrogen absorption and release process, the hot and cold fluids are collected through the outer jacket and discharged from the bottom port.

[0051] The solid-state hydrogen storage device uses a multi-channel heat exchange module to divide the hydrogen storage tank into several isolated areas. The cooling and heating energy is provided by the multi-channel heat exchange module within each area.

[0052] The solid-state hydrogen storage device, the multi-channel heat exchange module is a planar heat exchange unit with vertical plates on the plane to increase the heat exchange area.

[0053] For solid-state hydrogen storage devices, depending on the diameter of the hydrogen storage tank, one or more central main pipes can be installed.

[0054] The purpose of this embodiment is to provide a stationary hydrogen storage device to solve the problem of uneven heat exchange during the hydrogen absorption and release process of the hydrogen storage container.

[0055] This embodiment belongs to the field of solid-state hydrogen storage technology. It provides a highly efficient solid-state hydrogen storage device for both absorption and release, including a hydrogen storage container and internal temperature control components. The internal components consist of multiple radially arranged multi-channel heat exchange modules, perpendicular to the hydrogen storage tank's axis, dividing the tank into multiple interconnected independent sections. Each multi-channel heat exchange module is connected to the central axis of the hydrogen storage tank. Hot and cold media are distributed to the multiple heat exchange modules through a main pipe arranged along the central axis. In this embodiment, the multi-channel heat exchange modules are designed with evenly distributed hydrogen channels and expansion / contraction channels for the hydrogen storage material. An outer jacket is designed on the outer wall of the hydrogen storage tank, and the hot and cold media are collected through the outer jacket after passing through each multi-channel heat exchange module.

[0056] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0057] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A solid state hydrogen storage device for hydrogen absorption and desorption, characterized in that, The hydrogen storage tank comprises: a hydrogen storage tank inner cylinder (5) and a jacket outer cylinder (6); the jacket outer cylinder (6) is connected to the hydrogen storage tank inner cylinder (5) around the outer wall of the hydrogen storage tank inner cylinder (5), and a heat exchange medium channel (11) is formed between the inner wall of the jacket outer cylinder (6) and the outer wall of the hydrogen storage tank inner cylinder (5); a plurality of multi-channel heat exchange modules (7) are arranged in the hydrogen storage tank inner cylinder (5) and are arranged in sequence along the axial direction of the hydrogen storage tank inner cylinder (5); a heat exchange medium inlet (2) is connected to the inlets of the plurality of multi-channel heat exchange modules (7) through a heat exchange medium main pipe (9), the outlets of the multi-channel heat exchange modules (7) are connected to the heat exchange medium channel (11), and a heat exchange medium outlet (3) is arranged on the jacket outer cylinder (6) and is connected to the heat exchange medium channel (11); the multi-channel heat exchange modules (7) can exchange heat with the hydrogen storage medium in the hydrogen storage tank inner cylinder (5), and a plurality of perforations (8) for the flow of hydrogen and the hydrogen storage medium are arranged on the multi-channel heat exchange modules (7).

2. The hydrogen absorbing and desorbing solid-state hydrogen storage device according to claim 1, wherein The plurality of multi-channel heat exchange modules (7) divide the inside of the hydrogen storage tank inner cylinder (5) into a plurality of sub-zones that are connected to each other along the axial direction of the hydrogen storage tank inner cylinder (5).

3. The hydrogen absorbing and desorbing solid-state hydrogen storage device according to claim 2, wherein The multi-channel heat exchange modules (7) have a disc-shaped structure, the edge of the disc-shaped structure is connected to the inner wall of the hydrogen storage tank inner cylinder (5), the inlet of the multi-channel heat exchange module (7) is located at the center of the disc-shaped structure, and the outlet of the multi-channel heat exchange module (7) is located at the edge of the disc-shaped structure. The plurality of multi-channel heat exchange modules (7) are arranged in parallel to each other.

4. The hydrogen absorbing and desorbing solid-state hydrogen storage device according to claim 3, wherein The plurality of multi-channel heat exchange modules (7) are arranged perpendicularly to the axis of the hydrogen storage tank inner cylinder (5). The disc-shaped structure is provided with a cavity structure for the flow of heat exchange medium.

5. The hydrogen absorbing and desorbing solid state hydrogen storage device of claim 3, wherein, The heat exchange medium inlet (2) is connected to the cavity structure through the heat exchange medium main pipe (9), and the heat exchange medium outlet (3) is connected to the cavity structure. The heat exchange medium inlet (2) is arranged adjacent to the bottom of the hydrogen storage tank inner cylinder (5), and the medium main pipe (9) extends from bottom to top.

6. The hydrogen absorbing and desorbing solid state hydrogen storage device of claim 1, wherein, The medium outlet (3) is located at the bottom of the hydrogen storage tank inner cylinder (5).

7. The hydrogen absorbing and desorbing solid state hydrogen storage device of claim 1, wherein, A hydrogen outlet (4) is arranged at the top of the hydrogen storage tank inner cylinder (5).

8. The hydrogen absorbing and desorbing solid state hydrogen storage device of claim 1, wherein, A hydrogen inlet (1) is arranged at the bottom of the hydrogen storage tank inner cylinder (5). The multi-channel heat exchange module (7) is provided with a plurality of vertical plates (10) for increasing the heat dissipation area.

9. The hydrogen absorbing and desorbing solid state hydrogen storage device of claim 1, wherein, The heat exchange medium main pipe (9) is provided as one or more.

10. The hydrogen absorbing and desorbing solid state hydrogen storage device of claim 1, wherein, ​

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