A hydrogen storage device with high heat exchange efficiency
By using an aluminum alloy shell and annular plate structure design, the problem of increased weight caused by large coolant redundancy in water jacket cooling technology is solved, realizing a hydrogen storage device with high-efficiency heat exchange and lightweight design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI HAOYUN TECH
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-14
AI Technical Summary
In existing solid-state hydrogen storage devices, the water jacket cooling technology results in a large amount of redundant coolant, which increases the weight of the device and reduces its mass density.
The aluminum alloy shell and annular plate structure form a multi-layer hydrogen storage space and coolant flow channel, increasing the heat exchange area and flow rate. The annular plate is stabilized by fixed pipes, which improves heat exchange efficiency.
It improves the efficiency of heat exchange, reduces the amount of coolant used, reduces the weight of the device, and increases the mass density.
Smart Images
Figure CN224498176U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydrogen storage devices, and in particular to a hydrogen storage device with high-efficiency heat exchange. Background Technology
[0002] Grid-connected hydrogen energy storage power generation is a technology that converts renewable energy electricity into hydrogen for storage and then uses it to power fuel cells. It is a new type of large-scale energy storage technology that is clean and pollution-free, has high energy density, low operating and maintenance costs, long storage time, and diverse hydrogen utilization methods. It can effectively solve the problems of stable grid connection and curtailment of wind and solar power generation, and significantly reduce carbon emissions. Hydrogen storage technologies mainly include solid-state hydrogen storage and physical hydrogen storage. Physical hydrogen storage is further divided into gaseous hydrogen storage and liquid hydrogen storage. Gaseous hydrogen storage has advantages such as fast hydrogen charging and discharging speed, low energy consumption, low cost, and mature technology.
[0003] Solid-state hydrogen storage primarily employs water-jacketed cooling technology. The main principle of this technology is to integrate the coolant and hydrogen storage cylinder within a single tank, allowing for heat exchange between the solid hydrogen and the coolant through circulation. Its advantages include complete immersion of the hydrogen storage cylinder in the coolant, ensuring ample heat exchange for the solid hydrogen. However, its disadvantages include a large redundancy in the coolant and a heavy tank, significantly reducing the mass density of the solid-state hydrogen storage device.
[0004] Therefore, it is necessary to propose a hydrogen storage device with high-efficiency heat exchange to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a high-efficiency heat exchange hydrogen storage device to address the problem that solid-state hydrogen storage primarily employs water-jacketed cooling technology. The main principle of water-jacketed cooling technology is to integrate the coolant and hydrogen storage cylinder within a single tank, allowing for heat exchange between the solid hydrogen and the coolant through circulation. Its advantages include complete immersion of the hydrogen storage cylinder in the coolant, ensuring sufficient heat exchange for the solid hydrogen. However, its disadvantages include a large redundancy of coolant and a heavy water tank, leading to a significant reduction in the mass density of the solid-state hydrogen storage device.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency heat exchange hydrogen storage device, comprising:
[0007] Aluminum alloy casing;
[0008] The aluminum alloy shell has an outer annular plate inside, and an inner annular plate inside the outer annular plate. A gap is left between the aluminum alloy shell, the outer annular plate, and the inner annular plate.
[0009] A cavity is provided between the inner wall and the outer side of the aluminum alloy shell, the outer ring plate, and the inner ring plate;
[0010] The outer and inner annular plates are provided with channels for hydrogen gas to pass through.
[0011] Preferably, the top and bottom of the aluminum alloy shell are respectively fixed with end caps, and the two end caps are respectively provided with hydrogen inlet and hydrogen outlet, and the hydrogen inlet and hydrogen outlet are in communication with the space between the aluminum alloy shell and the outer annular plate.
[0012] Preferably, an inlet is provided at the top outer side of the aluminum alloy shell, and a heat exhaust port is provided at the bottom outer side of the aluminum alloy shell.
[0013] Both the inlet and the outlet are connected to the cavity of the aluminum alloy shell.
[0014] Preferably, an upper fixing tube and a lower fixing tube are connected between the aluminum alloy shell, the outer annular plate and the inner annular plate;
[0015] The upper and lower fixing tubes are used to connect the cavity between the aluminum alloy shell, the outer annular plate, and the inner annular plate.
[0016] Preferably, the lower fixing tube is disposed below the upper fixing tube, and multiple lower fixing tubes are disposed on both the upper fixing tube and the lower fixing tube.
[0017] Preferably, the two end caps have the same thickness.
[0018] The technical effects and advantages of this utility model are as follows:
[0019] 1. Hydrogen storage spaces are formed between the aluminum alloy shell and the outer annular plate, between the outer and inner annular plates, and within the inner annular plate, facilitating hydrogen flow and heat transfer. Coolant can enter through the cavities formed by the aluminum alloy shell, outer annular plate, and inner annular plate, forming coolant channels that exchange heat with the hydrogen in the storage spaces, increasing the contact area and improving exchange efficiency.
[0020] 2. The lower and upper fixed pipes allow the coolant or medium to communicate with each other from multiple cavities. They also provide support and stability for the outer and inner annular plates, preventing them from moving. In addition, they can increase the flow rate of the medium and improve the heat exchange efficiency. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the hydrogen storage device with high-efficiency heat exchange according to the present invention.
[0022] Figure 2 This is a schematic diagram of the internal structure of the aluminum alloy shell of this utility model.
[0023] Figure 3 This utility model Figure 2Enlarged diagram of point A in the middle.
[0024] Figure 4 This is a schematic diagram of the hydrogen storage device with high-efficiency heat exchange from another perspective.
[0025] In the diagram: 1. Aluminum alloy shell; 2. End cap; 3. Hydrogen inlet; 4. Heat outlet; 5. Inlet; 6. Outer annular plate; 7. Inner annular plate; 8. Upper fixed tube; 9. Lower fixed tube; 10. Through groove; 11. Cavity. Detailed Implementation
[0026] This utility model provides, for example Figures 1-4 The hydrogen storage device shown includes an aluminum alloy shell 1 with an overall racetrack-shaped structure, which has high strength and good corrosion resistance. Its thickness is uniform and it can withstand a certain internal pressure to ensure the stability of the equipment during operation.
[0027] End caps 2 are fixed to the top and bottom of the aluminum alloy shell 1, serving to seal and secure it. The two end caps are of the same thickness and made of the same material as the aluminum alloy shell 1. They are tightly connected to the shell by welding or threaded connection to ensure the overall sealing and robustness of the structure.
[0028] The aluminum alloy shell 1 has an outer ring plate 6 inside, and an inner ring plate 7 inside the outer ring plate 6. There is a gap between the aluminum alloy shell 1, the outer ring plate 6 and the inner ring plate 7.
[0029] A cavity 11 is provided between the inner wall and the outer side of the aluminum alloy shell 1, the outer annular plate 6 and the inner annular plate 7;
[0030] A hydrogen storage space is formed between the aluminum alloy shell 1 and the outer annular plate 6, between the outer annular plate 6 and the inner annular plate 7, and inside the inner annular plate 7, for the flow of hydrogen and heat transfer. Coolant can enter the cavity 11 formed by the aluminum alloy shell 1, the outer annular plate 6, and the inner annular plate 7 to form a coolant flow channel, thereby exchanging heat with the hydrogen in the hydrogen storage space, increasing the contact area for heat exchange, and improving the efficiency of the exchange.
[0031] The outer annular plate 6 and the inner annular plate 7 are provided with passage grooves 10 for hydrogen to pass through. The two end caps 2 are respectively provided with hydrogen inlet 3 and hydrogen outlet. Both hydrogen inlet 3 and hydrogen outlet are connected to the space between the aluminum alloy shell 1 and the outer annular plate 6. The passage grooves 10 can facilitate the mutual flow of hydrogen from the area formed between the aluminum alloy shell 1, the outer annular plate 6 and the inner annular plate 7.
[0032] An upper fixing pipe 8 and a lower fixing pipe 9 are connected between the aluminum alloy shell 1, the outer annular plate 6 and the inner annular plate 7. The upper fixing pipe 8 and the lower fixing pipe 9 are used to connect the cavity 11 between the aluminum alloy shell 1, the outer annular plate 6 and the inner annular plate 7.
[0033] An inlet 5 is provided at the top outer side of the aluminum alloy shell 1, and a heat exhaust port 4 is provided at the bottom outer side of the aluminum alloy shell 1.
[0034] Both the inlet 5 and the exhaust port 4 are connected to the cavity 11 of the aluminum alloy shell 1.
[0035] The lower fixing tube 9 is located below the upper fixing tube 8, and multiple lower fixing tubes 9 are provided on both the upper fixing tube 8 and the lower fixing tube 9.
[0036] The lower fixed pipe 9 and the upper fixed pipe 8 can connect the coolant or medium from the inside of multiple cavities 11. They can also support and stabilize the positions of the outer annular plate 6 and the inner annular plate 7, preventing the outer annular plate 6 and the inner annular plate 7 from moving. At the same time, they can increase the speed of medium flow and improve heat exchange efficiency.
Claims
1. A high-efficiency heat exchange hydrogen storage device, characterized in that: include: Aluminum alloy casing (1); The aluminum alloy shell (1) is provided with an outer ring plate (6) inside, and an inner ring plate (7) is provided inside the outer ring plate (6). A gap is left between the aluminum alloy shell (1), the outer ring plate (6) and the inner ring plate (7). A cavity (11) is provided between the inner wall and the outer side of the aluminum alloy shell (1), the outer annular plate (6) and the inner annular plate (7); The outer annular plate (6) and the inner annular plate (7) are provided with channels (10) for hydrogen to pass through.
2. The high-efficiency heat exchange hydrogen storage device according to claim 1, characterized in that: The aluminum alloy shell (1) is fixed with end caps (2) at the top and bottom respectively. The two end caps (2) are respectively provided with hydrogen inlet (3) and hydrogen outlet. The hydrogen inlet (3) and hydrogen outlet are connected to the space between the aluminum alloy shell (1) and the outer annular plate (6).
3. The high-efficiency heat exchange hydrogen storage device according to claim 1, characterized in that: An inlet (5) is provided at the top of the outer side of the aluminum alloy shell (1), and a heat exhaust port (4) is provided at the bottom of the outer side of the aluminum alloy shell (1). Both the inlet (5) and the exhaust port (4) are connected to the cavity (11) of the aluminum alloy shell (1).
4. The high-efficiency heat exchange hydrogen storage device according to claim 1, characterized in that: The aluminum alloy shell (1), the outer annular plate (6) and the inner annular plate (7) are connected by an upper fixing tube (8) and a lower fixing tube (9); The upper fixing tube (8) and the lower fixing tube (9) are used to connect the cavity (11) between the aluminum alloy shell (1), the outer annular plate (6) and the inner annular plate (7).
5. The high-efficiency heat exchange hydrogen storage device according to claim 4, characterized in that: The lower fixing tube (9) is located below the upper fixing tube (8), and multiple lower fixing tubes (9) are provided on both the upper fixing tube (8).
6. The high-efficiency heat exchange hydrogen storage device according to claim 1, characterized in that: The two end caps (2) have the same thickness.