Low-energy-consumption gas separation and recovery PEM electrolysis module
By designing a heat dissipation fin structure on the PEM electrolysis module, the problem of slow heat dissipation of the electrolysis module was solved, achieving efficient and stable heat dissipation, simplifying the system structure and reducing costs.
Patent Information
- Application Number
- CN202423165967.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Under high current density, the heat generated by the PEM electrolysis module cannot be dissipated quickly, leading to overheating, which affects the performance of the proton exchange membrane and the electrode materials, and makes it impossible to guarantee the stable and efficient operation of the electrolysis module.
It adopts a heat dissipation fin design, which conducts heat to the heat sink through the lower heat conduction plate, thermal grease and upper heat conduction plate, and uses the equally spaced heat dissipation fins for air cooling, increasing the air contact area and using natural or forced convection for rapid heat dissipation.
It effectively improves heat dissipation efficiency, keeps the temperature of the electrolysis module within a suitable operating range, ensures stable operation, simplifies the structure of the heat dissipation system, and reduces costs.
Smart Images
Figure CN223576615U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PEM electrolysis, specifically a low-energy gas separation and recovery PEM electrolysis module. Background Technology
[0002] A PEM (Proton Exchange Membrane Electrolysis Module) is a device that uses proton exchange membrane technology to electrolyze water; it is mainly used to decompose water into hydrogen and oxygen, and is a highly efficient and environmentally friendly hydrogen production device.
[0003] Hydrogen production from renewable energy sources: In the case of solar photovoltaic power generation and wind power generation, PEM electrolysis modules can convert excess electrical energy into hydrogen for storage; when electrical energy is needed, hydrogen can be converted back into electrical energy through fuel cells, effectively solving the problems of intermittency and instability of renewable energy sources;
[0004] Distributed hydrogen production: Small-scale, distributed hydrogen production can be carried out in hydrogen refueling stations, industrial plants, and other locations to provide hydrogen sources for fuel cell vehicles, hydrogen metallurgy, and other fields. For example, in hydrogen refueling stations, PEM electrolysis modules can produce high-purity hydrogen on-site to meet the hydrogen refueling needs of fuel cell vehicles.
[0005] During electrolysis, especially under conditions such as high current density, the electrolysis module may generate excessive heat. The excess heat cannot be dissipated quickly, leading to overheating of the electrolysis cell. Overheating can cause problems such as deterioration of proton exchange membrane performance and aging of electrode materials, making it impossible to guarantee the stable and efficient operation of the electrolysis module. Utility Model Content
[0006] The purpose of this invention is to provide a low-energy gas separation and recovery PEM electrolysis module to solve the defects mentioned in the background art.
[0007] To achieve the above objectives, a low-energy gas separation and recovery PEM electrolysis module is provided, comprising a PEM electrolysis module body. A positive electrode plate is fixedly installed at the end of the PEM electrolysis module body, and a negative electrode plate is installed at the bottom of the positive electrode plate. Meanwhile, a heat dissipation and mounting structure assembly is installed on the surface of the PEM electrolysis module body. The heat dissipation and mounting structure assembly includes a lower heat-conducting plate fixedly disposed on the surface of the PEM electrolysis module body, and an upper heat-conducting plate covering the surface of the lower heat-conducting plate. A heat sink is fixedly installed on the surface of the upper heat-conducting plate, and multiple sets of heat dissipation fins are uniformly fixedly disposed on the surface of the heat sink, with the distance between the heat dissipation fins being consistent.
[0008] Preferably, the lower heat-conducting sheet is a circular structure made of metal, and four sets of silicone grease filling grooves are evenly opened on the surface of the lower heat-conducting sheet, while the distance between two adjacent sets of silicone grease filling grooves is the same.
[0009] Preferably, all four sets of silicone grease filling grooves are arc-shaped and have the same depth. The grooves are filled with silicone grease, and heat is transferred between the lower and upper heat-conducting sheets through the silicone grease.
[0010] Preferably, four sets of fixing plates are evenly fixed on the outer circumference of the lower heat-conducting plate, and four sets of mounting plates are evenly fixed on the outer circumference of the upper heat-conducting plate. At the same time, through holes are opened on both the mounting plates and the fixing plates, and the fixing bolts pass through the mounting plates and the fixing plates in sequence and are screwed into the screw holes opened on the surface of the PEM electrolysis module body.
[0011] Preferably, two sets of positioning posts are fixedly provided on the surface of the lower heat-conducting sheet, and the two sets of positioning posts are arranged diagonally. At the same time, two sets of positioning holes are opened at the bottom of the upper heat-conducting sheet, and the two sets of positioning holes are distributed diagonally.
[0012] Preferably, the two sets of positioning pins are respectively inserted into the two sets of positioning holes, and the height of the positioning pins is equal to the depth of the positioning holes.
[0013] Preferably, the surface of the heat dissipation fins is provided with a lower air hole and an upper air hole, and the included angle between the lower air hole and the upper air hole is 90 degrees. At the same time, the heat dissipation fins are provided with flow channels, which are arranged in a "U" shape.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This utility model utilizes the heat generated by the PEM electrolysis module body during operation to transfer to the heat sink via the lower heat-conducting plate, silicone grease, and upper heat-conducting plate. Heat is then dissipated through numerous evenly distributed heat dissipation fins. By increasing the contact area with the air, the heat dissipation fins utilize natural or forced convection to quickly conduct heat from the electrolysis module's casing into the air. Compared to a smooth casing without heat dissipation fins, the finned design increases heat dissipation efficiency several times, allowing the electrolysis module's temperature to be better maintained within a suitable operating range, ensuring stable and efficient operation of the electrolysis module.
[0016] 2. This utility model features lower air holes, upper air holes, and flow channels on the surface of the heat dissipation fins. These air holes and flow channels guide air to flow between the numerous heat dissipation fins. Air can pass through these openings more smoothly, forming more effective convection channels between the fins. The openings can break the stagnation that may occur between the fins, allowing hot air to rise and be expelled more quickly, and cool air to be replenished more promptly, thereby enhancing the heat dissipation effect. Attached Figure Description
[0017] Figure 1 This is a front view schematic diagram of the structure of this utility model;
[0018] Figure 2 for Figure 1 A bottom view;
[0019] Figure 3 for Figure 1 Top view;
[0020] Figure 4 Schematic diagram of heat dissipation and its mounting structure components;
[0021] Figure 5 for Figure 3 A sectional view.
[0022] The following are the labeling elements in the diagram: 1. PEM electrolysis module body; 2. Positive electrode plate; 3. Negative electrode plate; 4. Heat dissipation and its mounting structure components; 41. Lower heat-conducting plate; 42. Silicon grease filling groove; 43. Positioning post; 44. Fixing plate; 45. Mounting plate; 451. Upper heat-conducting plate; 452. Positioning hole; 46. Heat sink; 47. Heat dissipation fins; 471. Lower vent; 472. Upper vent; 473. Flow channel. Detailed Implementation
[0023] Please see Figure 1-5 This utility model provides a low-energy gas separation and recovery PEM electrolysis module, including a PEM electrolysis module body 1. A positive electrode 2 is fixedly installed at the end of the PEM electrolysis module body 1, and a negative electrode 3 is installed at the bottom of the positive electrode 2. At the same time, a heat dissipation and mounting structure assembly 4 is installed on the surface of the PEM electrolysis module body 1. The heat dissipation and mounting structure assembly 4 includes a lower heat conduction sheet 41 fixedly disposed on the surface of the PEM electrolysis module body 1, and an upper heat conduction sheet 451 is covered on the surface of the lower heat conduction sheet 41. At the same time, a heat sink 46 is fixedly installed on the surface of the upper heat conduction sheet 451, and multiple sets of heat dissipation fins 47 are uniformly fixedly disposed on the surface of the heat sink 46, and the distance between the heat dissipation fins 47 is consistent.
[0024] Working Principle: When using metal, silicone grease is first evenly applied to the inside of the silicone grease filling groove 42. Through the four sets of silicone grease filling grooves 42, the silicone grease is evenly applied to the surface of the lower heat-conducting plate 41, which is then covered by the upper heat-conducting plate 451. Positioning posts 43 are inserted into the two sets of positioning holes 452 to complete the positioning and installation between the heat sink 46 and the lower heat-conducting plate 41. Simultaneously, fixing bolts pass through the mounting plate 45 and fixing plate 44 and are screwed into the screw holes on the surface of the PEM electrolysis module body 1. In this way, the heat sink and its mounting structure assembly 4 are fixedly installed on the surface of the PEM electrolysis module body 1. The heat generated by the PEM electrolysis module body 1 during operation is transferred to the heat sink 46 through the lower heat-conducting plate 41, silicone grease, and upper heat-conducting plate 451, and dissipated through a large number of evenly distributed heat dissipation fins 47. By increasing the contact area with air, the heat dissipation fins 47 utilize natural or forced convection to quickly dissipate heat from the electrolysis module casing. The heat is conducted into the air; compared to a smooth shell without heat dissipation fins, the design with heat dissipation fins can improve heat dissipation efficiency several times, allowing the temperature of the electrolytic module to be better maintained within a suitable operating temperature range, generally 50-80℃; the structure of air-cooled heat dissipation fins is relatively simple. Compared to complex water-cooling systems, air-cooled heat dissipation fins do not require additional water pumps, water pipes, radiators, or other complex water-cooling components. This not only makes the entire heat dissipation system more compact and simple, but also has a significant cost advantage; the surface of the heat dissipation fins 47 is provided with lower air holes 471, upper air holes 472, and flow channels 473, which can guide air to flow between the numerous heat dissipation fins 47; air can pass more smoothly through these openings, forming more effective convection channels between the fins. The openings can break the stagnation state that may occur between the fins, allowing hot air to rise and be expelled more quickly, and cool air to be replenished more promptly, thereby enhancing the heat dissipation effect.
[0025] The lower heat-conducting plate 41 is a circular structure made of metal, and four sets of silicone grease filling grooves 42 are evenly opened on the surface of the lower heat-conducting plate 41, while the distance between two adjacent sets of silicone grease filling grooves 42 is the same.
[0026] In a preferred embodiment, all four sets of silicone grease filling grooves 42 are arc-shaped and have the same depth. The four sets of silicone grease filling grooves 42 are filled with silicone grease, and heat is transferred between the lower heat-conducting sheet 41 and the upper heat-conducting sheet 451 through the silicone grease.
[0027] Four sets of fixing plates 44 are evenly fixed on the outer circumference of the lower heat-conducting plate 41, and four sets of mounting plates 45 are evenly fixed on the outer circumference of the upper heat-conducting plate 451. At the same time, through holes are opened on both the mounting plates 45 and the fixing plates 44, and the fixing bolts pass through the mounting plates 45 and the fixing plates 44 in sequence and are screwed and fixed inside the screw holes opened on the surface of the PEM electrolysis module body 1.
[0028] In a preferred embodiment, two sets of positioning posts 43 are fixedly provided on the surface of the lower heat-conducting plate 41, and the two sets of positioning posts 43 are arranged diagonally. At the same time, two sets of positioning holes 452 are provided at the bottom of the upper heat-conducting plate 451, and the two sets of positioning holes 452 are distributed diagonally.
[0029] Two sets of positioning pins 43 are respectively inserted into the interior of two sets of positioning holes 452, and the height of the positioning pins 43 is equal to the depth of the positioning holes 452.
[0030] In a preferred embodiment, the surface of the heat dissipation fin 47 is provided with a lower air hole 471 and an upper air hole 472, and the included angle between the lower air hole 471 and the upper air hole 472 is 90 degrees. At the same time, the heat dissipation fin 47 is provided with a flow channel 473, which is U-shaped.
Claims
1. A low-energy gas separation and recovery PEM electrolysis module, comprising a PEM electrolysis module body (1), characterized in that: A positive electrode plate (2) is fixedly installed at the end of the PEM electrolysis module body (1), and a negative electrode plate (3) is installed at the bottom of the positive electrode plate (2). Meanwhile, a heat dissipation and its mounting structure assembly (4) is installed on the surface of the PEM electrolysis module body (1). The heat dissipation and its mounting structure assembly (4) includes a lower heat-conducting plate (41) fixedly installed on the surface of the PEM electrolysis module body (1), and an upper heat-conducting plate (451) is covered on the surface of the lower heat-conducting plate (41). Meanwhile, a heat sink (46) is fixedly installed on the surface of the upper heat-conducting plate (451), and multiple sets of heat dissipation fins (47) are uniformly fixed on the surface of the heat sink (46). The distance between the heat dissipation fins (47) is consistent.
2. The low-energy gas separation and recovery PEM electrolysis module according to claim 1, characterized in that: The lower heat-conducting sheet (41) is a circular structure made of metal, and four sets of silicone grease filling grooves (42) are evenly opened on the surface of the lower heat-conducting sheet (41), while the distance between two adjacent sets of silicone grease filling grooves (42) is consistent.
3. The low-energy gas separation and recovery PEM electrolysis module according to claim 2, characterized in that: All four sets of silicone grease filling grooves (42) are arc-shaped and have the same depth. The four sets of silicone grease filling grooves (42) are filled with silicone grease, and the lower heat-conducting sheet (41) and the upper heat-conducting sheet (451) are heat-transferred through the silicone grease.
4. The low-energy gas separation and recovery PEM electrolysis module according to claim 1, characterized in that: Four sets of fixing plates (44) are uniformly fixed on the outer circumference of the lower heat-conducting plate (41), and four sets of mounting plates (45) are uniformly fixed on the outer circumference of the upper heat-conducting plate (451). At the same time, through holes are opened on both the mounting plates (45) and the fixing plates (44), and the fixing bolts pass through the mounting plates (45) and the fixing plates (44) in sequence and are screwed and fixed inside the screw holes opened on the surface of the PEM electrolysis module body (1).
5. The low-energy gas separation and recovery PEM electrolysis module according to claim 1, characterized in that: The surface of the lower heat-conducting plate (41) is fixedly provided with two sets of positioning posts (43), and the two sets of positioning posts (43) are arranged diagonally. At the same time, the bottom of the upper heat-conducting plate (451) is provided with two sets of positioning holes (452), and the two sets of positioning holes (452) are distributed diagonally.
6. The low-energy gas separation and recovery PEM electrolysis module according to claim 5, characterized in that: Two sets of positioning pins (43) are inserted into the two sets of positioning holes (452) respectively, and the height of the positioning pins (43) is equal to the depth of the positioning holes (452).
7. The low-energy gas separation and recovery PEM electrolysis module according to claim 1, characterized in that: The surface of the heat dissipation fins (47) is provided with a lower air hole (471) and an upper air hole (472), and the included angle between the lower air hole (471) and the upper air hole (472) is 90 degrees. At the same time, a flow channel (473) is provided on the heat dissipation fins (47), and the flow channel (473) is U-shaped.