A high-efficiency and energy-saving solid-state hydrogen storage device
By designing a heat-conducting medium circulating inside the tank in a magnesium-based hydrogen storage device to exchange heat with the hydrogen storage module, the problem of limited heat exchange area in existing technologies is solved, thereby improving the hydrogen absorption and desorption rate and energy utilization rate of magnesium-based hydrogen storage alloys.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 江苏华镁时代科技有限公司
- Filing Date
- 2025-06-17
- Publication Date
- 2026-05-26
AI Technical Summary
Existing magnesium-based hydrogen storage devices have limited heat exchange area, resulting in poor heat transfer efficiency, high energy consumption, and uneven heating, which affects the hydrogen absorption and desorption rates of magnesium-based hydrogen storage alloys.
The heat exchange between the heat transfer medium circulating inside the tank and the hydrogen storage module is achieved through the design of the tank, hydrogen storage module, partition plate and main pipeline. The heat exchange area and uniformity between the heat transfer medium and the hydrogen storage module are improved. The use of concave and convex plates increases the fluidity and optimizes the heat exchange efficiency and energy utilization.
The hydrogen absorption and desorption rates of magnesium-based hydrogen storage alloys are improved, resulting in more efficient heat exchange and energy utilization, while ensuring heating uniformity.
Smart Images
Figure CN224284230U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of solid-state hydrogen storage technology, and in particular to a high-efficiency and energy-saving solid-state hydrogen storage device. Background Technology
[0002] In existing technologies, hydrogen storage devices based on magnesium-based hydrogen storage materials typically include a storage tank containing the magnesium-based hydrogen storage material. Heat exchange tubes are wound around the outside of the tank, and heat transfer oil flows within these tubes. Heat exchange occurs through the heat transfer oil during the hydrogen absorption or release process of the magnesium-based hydrogen storage material, thus stabilizing the internal temperature of the tank at the hydrogen absorption or release temperature. However, due to the significant difference between the hydrogen absorption and release temperatures of the magnesium-based hydrogen storage alloy (280°C for absorption and 340°C for release), the heat exchange area using external heat transfer tubes is limited, resulting in poor heat transfer efficiency, high energy consumption, and uneven heating. This significantly reduces the hydrogen absorption and release rates of the magnesium-based hydrogen storage alloy. Utility Model Content
[0003] In response to the shortcomings of the existing production technology, the applicant provides a high-efficiency and energy-saving solid hydrogen storage device that can increase the heat exchange area between the heat transfer medium and the hydrogen storage module, effectively improving heat exchange efficiency and energy utilization; at the same time, it can improve heating uniformity, thereby increasing the hydrogen absorption and desorption rate of the magnesium-based hydrogen storage alloy.
[0004] The technical solution adopted in this utility model is as follows:
[0005] A high-efficiency and energy-saving solid hydrogen storage device includes a tank, and a hydrogen storage component is installed inside the tank. The hydrogen storage component includes several hydrogen storage modules arranged at intervals along the axial direction.
[0006] It also includes a main pipeline, one end of which extends into the interior of the tank and is connected to each hydrogen storage module. Each hydrogen storage module contains a solid hydrogen storage material, which absorbs hydrogen flowing in through the main pipeline, or releases hydrogen from the solid hydrogen storage material and flows out through the main pipeline.
[0007] A heat-conducting medium circulates within the tank, heating the hydrogen storage components to bring the internal temperature of each hydrogen storage module to the hydrogen absorption or release temperature; or, the heat-conducting medium cools the hydrogen storage components, ensuring that the internal temperature of each hydrogen storage module remains stable when releasing hydrogen.
[0008] As a further improvement to the above technical solution:
[0009] The hydrogen storage assembly is fixed to the inside of the tank by several mounting rods.
[0010] Limiting partitions are installed at the top and bottom of the hydrogen storage module, and a partition plate is installed between two adjacent hydrogen storage modules.
[0011] Both the individual limiting partition and the individual dividing plate are made of concave and convex plates.
[0012] The structure of a single hydrogen storage module is as follows: it includes a box body, the inside of which is provided with a cavity, and a solid hydrogen storage material is placed in the cavity. The outer wall of the box body is provided with a circumferential flange, and a gas passage is provided inside the flange. One end of the gas passage forms a gas port on the end face of the flange, and the other end of the gas passage leads to the cavity.
[0013] In a single hydrogen storage module, a second mounting hole is provided on the end face of the convex edge.
[0014] In a single hydrogen storage module, the gas inlet is connected to the main pipeline via a connecting branch pipe.
[0015] The tank body has a first through hole and a second through hole for the entry and exit of the heat transfer medium. A first connector is installed in the first through hole and a second connector is installed in the second through hole.
[0016] The first through hole and the second through hole are distributed opposite to each other along the axial direction of the tank, and the first through hole is located above the second through hole.
[0017] A third through hole is provided on the top wall of the tank, and a top cover is installed at the third through hole.
[0018] The beneficial effects of this utility model are as follows:
[0019] This utility model has a compact and reasonable structure and is easy to operate. By setting up a tank, hydrogen storage modules, partition plates and main pipelines, the heat transfer medium can exchange heat with the hydrogen storage modules inside the tank, thereby increasing the heat exchange area between the heat transfer medium and the hydrogen storage modules, effectively improving heat exchange efficiency and energy utilization. At the same time, by exchanging heat with each small hydrogen storage module separately, the heating uniformity can be improved, thereby increasing the hydrogen absorption and desorption rate of the magnesium-based hydrogen storage alloy. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model.
[0021] Figure 2 for Figure 1 The main view.
[0022] Figure 3 for Figure 2 A sectional view of section AA in the middle.
[0023] Figure 4 for Figure 1 Top view.
[0024] Figure 5 for Figure 4 Sectional view of section BB.
[0025] Figure 6 This is a schematic diagram of the hydrogen storage module in this utility model.
[0026] Figure 7 This is a schematic diagram of the connection structure between the hydrogen storage module and the main pipeline in this utility model.
[0027] Figure 8 This is a schematic diagram of the partition plate in this utility model.
[0028] The components include: 1. Tank body; 2. Hydrogen storage module; 3. Divider plate; 4. Limiting partition plate; 5. Mounting rod; 6. Main pipeline; 7. Connecting branch pipe; 8. First joint; 9. Second joint; 10. First mounting hole; 11. Top cover;
[0029] 201. Box body; 202. Raised edge; 203. Air passage; 204. Second mounting hole; 205. Air port. Detailed Implementation
[0030] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0031] The structure and function of this utility model are as follows:
[0032] like Figures 1-8 As shown, a high-efficiency and energy-saving solid-state hydrogen storage device includes a tank 1, inside which a hydrogen storage assembly is installed. The hydrogen storage assembly includes several hydrogen storage modules 2 arranged axially at intervals. It also includes a main pipe 6, one end of which extends into the tank 1 and is connected to each hydrogen storage module 2. Each hydrogen storage module 2 contains a solid hydrogen storage material. The solid hydrogen storage material absorbs hydrogen flowing in through the main pipe 6, or hydrogen released by the solid hydrogen storage material flows out through the main pipe 6. A heat-conducting medium circulates within the tank 1, heating the hydrogen storage assembly so that the internal temperature of each hydrogen storage module 2 reaches the hydrogen absorption temperature or hydrogen release temperature; or cooling the hydrogen storage assembly so that the internal temperature of each hydrogen storage module 2 remains stable when the hydrogen storage assembly releases hydrogen. By setting up a tank 1, a hydrogen storage module 2, a partition plate 3, and a main pipeline 6, the heat transfer medium can exchange heat with the hydrogen storage module 2 inside the tank 1, thereby increasing the heat exchange area between the heat transfer medium and the hydrogen storage module 2, effectively improving heat exchange efficiency and energy utilization. At the same time, by exchanging heat with each small-volume hydrogen storage module 2 separately, the heating uniformity can be improved, thereby increasing the hydrogen absorption and desorption rate of the magnesium-based hydrogen storage alloy.
[0033] The hydrogen storage assembly is fixed to the inside of the tank 1 by several mounting rods 5. In this invention, four mounting rods 5 are provided, each mounted rod 5 is arranged parallel to the axial direction of the tank 1, and its end is fixed to the inner bottom wall of the tank 1, which can realize the limiting and fixing of the hydrogen storage assembly.
[0034] Limiting baffles 4 are installed at the top and bottom of the hydrogen storage module, and partition plates 3 are installed between two adjacent hydrogen storage modules 2. The limiting baffles 4 at the bottom are used to support the hydrogen storage module.
[0035] Both the individual limiting partition 4 and the individual partition plate 3 adopt a concave-convex plate design. By adopting a concave-convex plate design, it is possible to avoid the end face of the limiting partition 4, the end face of the partition plate 3, and the end face of the adjacent hydrogen storage module 2 being completely in contact. This allows a cavity to be formed between the end face of the limiting partition 4, the end face of the partition plate 3, and the end face of the adjacent hydrogen storage module 2, thereby allowing the heat transfer medium to flow through the cavity and exchange heat with the hydrogen storage module 2, thus improving heat exchange efficiency and heat exchange uniformity. In addition, the concave-convex plate design can also increase the fluidity of the heat transfer medium, further improving heat exchange efficiency.
[0036] Several first mounting holes 10 are provided on the end face of a single concave-convex plate. The first mounting holes 10 are set one-to-one with the mounting rods 5. By allowing the mounting rods 5 to pass through the corresponding first mounting holes 10, the concave-convex plate is installed on the outer circular surface of the mounting rods 5. The four mounting rods 5 limit its movement and prevent it from moving.
[0037] The structure of a single hydrogen storage module 2 is as follows: it includes a housing 201, with an internal cavity containing solid hydrogen storage material. A circumferential flange 202 is provided on the outer wall of the housing 201, and a gas passage 203 is provided inside the flange 202. One end of the gas passage 203 forms a gas port 205 on the end face of the flange 202, and the other end of the gas passage 203 leads to the internal cavity. In this invention, the volume of a single hydrogen storage module 2 is small; by setting multiple hydrogen storage modules 2, the overall hydrogen storage capacity of the solid hydrogen storage device is increased.
[0038] In a single hydrogen storage module 2, a second mounting hole 204 is provided on the end face of the protruding edge 202. The second mounting hole 204 is provided in a one-to-one correspondence with the mounting rod 5. By allowing the mounting rod 5 to pass through the corresponding second mounting hole 204, the hydrogen storage module 2 is installed on the outer circular surface of the mounting rod 5. The four mounting rods 5 limit its movement and prevent it from shifting.
[0039] In a single hydrogen storage module 2, the gas port 205 is connected to the main pipeline 6 via a connecting branch pipe 7. The single connecting branch pipe 7 is generally L-shaped, with one end connected to the corresponding gas port 205 and the other end connected to the main pipeline 6, thereby connecting the hydrogen inlet / outlet paths.
[0040] The side wall of the tank 1 is provided with a first through hole and a second through hole for the inlet and outlet of the heat transfer medium. A first connector 8 is installed in the first through hole and a second connector 9 is installed in the second through hole. The first connector 8 and the second connector 9 are used to connect the heat transfer medium conveying pipeline. In this utility model, the heat transfer medium is heat transfer oil.
[0041] The first and second through holes are distributed opposite each other along the axial direction of the tank 1, with the first through hole located above the second through hole. By staggering the arrangement of the first and second through holes, the fluidity of the heat transfer medium can be improved, thereby increasing the heat exchange efficiency.
[0042] A third through hole is provided on the top wall of the tank body 1, and a top cover 11 is installed at the third through hole. In this utility model, the top cover 11 is installed with the tank body 1 by means of a hinge, so that the top cover 11 can rotate relative to the tank body 1, thereby realizing the opening and closing of the top cover 11; in addition, a sealing ring is installed on the inner circular surface of the third through hole to ensure the sealing performance of the inside of the tank body 1 when the top cover 11 is closed.
[0043] In this utility model, the main pipe 6, the connecting branch pipe 7, and the heat transfer medium conveying pipeline can all be formed by splicing several short pipes or by using long pipes, depending on the specific usage and installation requirements. In addition, each pipeline is equipped with a corresponding control valve assembly, which is configured according to the actual production requirements.
[0044] The working process of this utility model is as follows:
[0045] When hydrogen charging is required, the main pipeline 6 is connected to the hydrogen source through the first connecting pipe group, the first connector 8 is connected to the oil inlet of the thermal oil heater through the first thermal medium conveying pipeline, and the second connector 9 is connected to the oil outlet of the thermal oil heater through the second thermal medium conveying pipeline.
[0046] The heat transfer oil heater heats the heat transfer medium. The heated heat transfer medium enters the interior of the tank 1 through the second heat transfer medium delivery pipeline, thereby exchanging heat with the hydrogen storage components. This allows the temperature inside each hydrogen storage module 2 to reach the hydrogen absorption temperature. The heat transfer medium after heat exchange flows back to the heat transfer oil heater through the first heat transfer medium delivery pipeline, thus allowing the heat transfer medium to circulate between the heat transfer oil heater and the tank 1.
[0047] Meanwhile, the first heat transfer medium conveying pipeline is connected to the oil inlet of the heat transfer oil cooler through the third heat transfer medium conveying pipeline, and the second heat transfer medium conveying pipeline is connected to the oil outlet of the heat transfer oil cooler through the fourth heat transfer medium conveying pipeline.
[0048] Hydrogen gas is supplied to the corresponding hydrogen storage module 2 through the main pipeline 6 and the corresponding connecting branch pipe 7. At the hydrogen absorption temperature, the solid hydrogen storage material (specifically magnesium hydride) in each hydrogen storage module 2 absorbs hydrogen. During the hydrogen absorption process, the solid hydrogen storage material releases heat. The heat transfer medium circulates between the heat transfer oil heater and the tank 1 through the second heat transfer medium delivery pipeline, thereby exchanging heat with the hydrogen storage components, so that the temperature in each hydrogen storage module 2 reaches the hydrogen absorption temperature. At the hydrogen absorption temperature, the solid hydrogen storage material (specifically magnesium hydride) in each hydrogen storage module 2 absorbs hydrogen.
[0049] Subsequently, the heat transfer oil heater stops working, and the heat transfer oil cooler starts. The heat transfer oil cooler cools the heat transfer medium. The cooled heat transfer oil enters the tank 1 through the fourth heat transfer medium delivery pipeline and the second heat transfer medium delivery pipeline in sequence. After exchanging heat with each hydrogen storage module 2, it flows back to the heat transfer oil cooler through the first heat transfer medium delivery pipeline and the third heat transfer medium delivery pipeline. This allows the heat transfer medium to circulate between the heat transfer oil cooler and the tank 1, thereby stabilizing the temperature inside each hydrogen storage module 2 at the hydrogen absorption temperature, so as to ensure that the solid hydrogen storage material can stably absorb hydrogen.
[0050] When hydrogen release is required, the main pipeline 6 is connected to the hydrogen-using equipment through the second connecting pipe group, the first connector 8 is connected to the oil inlet of the thermal oil heater through the first thermal medium conveying pipeline, and the second connector 9 is connected to the oil outlet of the thermal oil heater through the second thermal medium conveying pipeline.
[0051] During the hydrogen release process, the solid hydrogen storage material absorbs heat, and the internal temperature of each hydrogen storage module 2 is kept stable at the hydrogen release temperature by the heat transfer oil heater and the heat transfer medium circulating inside the tank 1, so as to ensure that the solid hydrogen storage material releases hydrogen stably.
[0052] Hydrogen released from the solid hydrogen storage material inside a single hydrogen storage module 2 is sequentially transported to the hydrogen-using equipment through the corresponding connecting branch pipe 7 and the main pipeline 6.
[0053] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.
Claims
1. A high-efficiency and energy-saving solid-state hydrogen storage device, characterized in that: Includes a tank (1), and a hydrogen storage assembly is installed inside the tank (1). The hydrogen storage assembly includes several hydrogen storage modules (2) arranged at intervals along the axial direction. It also includes a main pipe (6), one end of which extends into the interior of the tank (1) and is connected to each hydrogen storage module (2). Each hydrogen storage module (2) contains a solid hydrogen storage material, which absorbs hydrogen flowing in through the main pipe (6) or releases hydrogen through the main pipe (6). A heat-conducting medium circulates inside the tank (1), which heats the hydrogen storage components so that the internal temperature of each hydrogen storage module (2) reaches the hydrogen absorption temperature or the hydrogen release temperature; or, the heat-conducting medium cools the hydrogen storage components so that the internal temperature of each hydrogen storage module (2) remains stable when the hydrogen storage components release hydrogen.
2. The high-efficiency and energy-saving solid-state hydrogen storage device as described in claim 1, characterized in that: The hydrogen storage assembly is fixed inside the tank (1) by several mounting rods (5).
3. The high-efficiency and energy-saving solid-state hydrogen storage device as described in claim 1, characterized in that: Limiting partitions (4) are installed at the top and bottom of the hydrogen storage module, and partitions (3) are installed between two adjacent hydrogen storage modules (2).
4. The high-efficiency and energy-saving solid-state hydrogen storage device as described in claim 3, characterized in that: Both the single limiting partition (4) and the single partition plate (3) are made of concave and convex plates.
5. The high-efficiency and energy-saving solid-state hydrogen storage device as described in claim 1, characterized in that: The structure of a single hydrogen storage module (2) is as follows: it includes a box (201), the box (201) has an internal cavity, a solid hydrogen storage material is placed in the cavity, the outer wall of the box (201) has a circumferential flange (202), the flange (202) has an internal gas passage (203), one end of the gas passage (203) forms a gas port (205) on the end face of the flange (202), and the other end of the gas passage (203) leads to the cavity.
6. The high-efficiency and energy-saving solid-state hydrogen storage device as described in claim 5, characterized in that: In a single hydrogen storage module (2), a second mounting hole (204) is provided on the end face of the protrusion (202).
7. The high-efficiency and energy-saving solid-state hydrogen storage device as described in claim 5, characterized in that: In a single hydrogen storage module (2), the gas port (205) is connected to the main pipeline (6) via a connecting branch pipe (7).
8. The high-efficiency and energy-saving solid-state hydrogen storage device as described in claim 1, characterized in that: The tank (1) has a first through hole and a second through hole for the heat transfer medium to enter and exit. A first connector (8) is installed in the first through hole and a second connector (9) is installed in the second through hole.
9. The high-efficiency and energy-saving solid-state hydrogen storage device as described in claim 8, characterized in that: The first through hole and the second through hole are distributed relative to each other along the axial direction of the tank (1), and the first through hole is located above the second through hole.
10. The high-efficiency and energy-saving solid-state hydrogen storage device as described in claim 1, characterized in that: A third through hole is provided on the top wall of the tank (1), and a top cover (11) is installed at the third through hole.