Redox flow battery diaphragm

Abstract

The utility model discloses a redox flow battery diaphragm, which relates to the field of battery diaphragm devices, and comprises an outer frame, an inner frame and a diaphragm, the inner frame is suspended in the outer frame, a guide groove is arranged on the inner side surface of the outer frame and close to the lower position, and rotating shafts are rotatably arranged on the outer surfaces of the two sides of the inner frame and close to the upper position. The other end of the rotating shaft is rotationally connected with the inner side surface of the outer frame, driven rods are fixedly installed on the outer surfaces of the two sides of the inner frame and close to the lower portion, and magnetic blocks are fixedly installed at the other ends of the driven rods. And a diaphragm is mounted in the inner frame. According to the utility model, the driven rod and the magnetic block are arranged, and the diaphragm swings back and forth according to the flowing condition of electrolyte and the ion concentration distribution, so that the ion transmission path is optimized, the aggregation of ions on the surface of the diaphragm is reduced, meanwhile, the mechanical strength of the diaphragm can be increased, and the service life of the diaphragm is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of battery separator devices, and in particular to a redox flow battery separator. Background Technology

[0002] With the continuous growth of energy demand and increasing emphasis on environmental protection, the storage and efficient utilization of renewable energy has become a global focus. As a highly efficient and flexible energy storage technology, redox flow batteries have gradually emerged in the energy storage field due to their advantages such as independent design of energy and power, long cycle life, and deep charge and discharge capability. However, existing redox flow batteries still face some technical challenges in practical applications, especially in terms of separator design.

[0003] Traditional redox flow batteries typically employ a static design for their separators, which are fixed inside the battery. This makes it impossible to dynamically adjust the separator based on electrolyte flow and ion concentration distribution during battery operation. Static separators cannot adapt to changes in electrolyte flow, which can easily lead to ion accumulation on the separator surface, increasing battery internal resistance and reducing battery output power and stability.

[0004] Therefore, it is necessary to propose a redox flow battery separator to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a redox flow battery separator to solve the problems mentioned in the background art, such as the inability of traditional separators to adapt to changes in electrolyte flow, which easily leads to the accumulation of ions on the separator surface, increasing the battery's internal resistance and reducing the battery's output power and stability.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a redox flow battery separator, comprising an outer frame, an inner frame and a separator, wherein the inner frame is suspended inside the outer frame, and a guide groove is formed on the inner surface of the outer frame near the bottom.

[0007] A rotating shaft is rotatably mounted on the outer surfaces of both sides of the inner frame near the top. The other end of the rotating shaft is rotatably connected to the inner surface of the outer frame. A driven rod is fixedly mounted on the outer surfaces of both sides of the inner frame near the bottom. A magnetic block is fixedly mounted on the other end of the driven rod.

[0008] A diaphragm is installed inside the inner frame.

[0009] Preferably, the guide groove is a cylindrical design in the front-to-back horizontal direction.

[0010] Preferably, the magnetic block is designed as a sphere and slides back and forth within the guide groove.

[0011] Preferably, sealing frames are glued to the front and rear surfaces of both the outer frame and the inner frame.

[0012] Preferably, a limiting rod is fixedly installed inside the inner frame. Multiple limiting rods are provided and are distributed in a staggered manner. The diaphragm is limited by the limiting rods and is distributed in a wave-like manner inside the inner frame.

[0013] Preferably, the diaphragm is provided with raised strips, and multiple raised strips are provided and cover the diaphragm. The raised strips are distributed at an angle, and holes are provided on both the diaphragm and the raised strips.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. The driven rod and magnetic block in this invention, used in conjunction with an external electromagnet, cause the driven rod and the lower half of the inner frame to swing back and forth along the guide groove under the magnetic field generated by the external electromagnet. The diaphragm, through the back-and-forth swing of the inner frame, can adjust in real time according to the electrolyte flow and ion concentration distribution, optimizing the ion transport path and reducing ion accumulation on the diaphragm surface, thereby improving ion transport efficiency. Simultaneously, the diaphragm has a wavy distribution and inclined raised strips on its surface, further increasing the surface area and ion conduction channels, significantly improving ion transport efficiency, thereby accelerating charging speed and reducing energy loss. This solves the problems of static diaphragms being unable to adapt to changes in electrolyte flow and the low ion conduction efficiency of traditional diaphragms.

[0016] 2. The suspended structure of the outer frame and inner frame and the guide groove in this utility model provide stable support for the entire diaphragm device, preventing the diaphragm from deforming or shifting due to external forces and enhancing the mechanical strength of the diaphragm. The inner frame is suspended inside the outer frame by a pivot, allowing it to flexibly adjust its position within a certain range. The guide groove provides a clear and stable guiding path for the movement of the inner frame, ensuring the accuracy of the movement and solving the problem of the diaphragm being easily deformed or shifted due to external forces during use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a redox flow battery separator according to the present invention;

[0018] Figure 2 This is a split view of a redox flow battery separator according to the present invention;

[0019] Figure 3 This is a cross-sectional view of a redox flow battery separator according to the present invention;

[0020] Figure 4 This is a schematic diagram of the inner frame of a redox flow battery separator according to the present invention;

[0021] Figure 5 This is a schematic diagram of a redox flow battery separator according to the present invention;

[0022] In the diagram: 1. Outer frame; 101. Guide groove; 2. Inner frame; 201. Rotating shaft; 202. Driven rod; 203. Magnetic block; 204. Limiting rod; 3. Sealing frame; 4. Diaphragm; 401. Hole; 402. Raised strip. Detailed Implementation

[0023] This invention provides a redox flow battery separator; please refer to the appendix. Figure 1 -Appendix Figure 2 As shown.

[0024] The device includes an outer frame 1, an inner frame 2, and a diaphragm 4. The inner frame 2 is suspended inside the outer frame 1. A guide groove 101 is provided on the inner surface of the outer frame 1 near the bottom. The outer frame 1 serves as the supporting structure for the entire device, providing stable support for the diaphragm device and effectively preventing deformation or displacement of the diaphragm due to external forces during use. The inner frame 2 is suspended inside, and this suspension design can effectively fix the position of the inner frame 2 while allowing it to be flexibly adjusted within a certain range. In addition, the guide groove 101 is provided on the inner surface of the outer frame 1 near the bottom. The design of the guide groove 101 provides a clear guiding path for the movement of the inner frame 2, ensuring that the inner frame 2 can maintain a stable and accurate movement direction during movement.

[0025] Specifically, a rotating shaft 201 is rotatably mounted on the outer surfaces of both sides of the inner frame 2 near the top. The other end of the rotating shaft 201 is rotatably connected to the inner surface of the outer frame 1. A driven rod 202 is fixedly mounted on the outer surfaces of both sides of the inner frame 2 near the bottom. A magnetic block 203 is fixedly mounted on the other end of the driven rod 202. The design of the magnetic block 203 provides additional power support for the movement of the inner frame 2. At the same time, by utilizing the characteristics of magnetic force, the lower half of the inner frame 2 can be made to swing back and forth. When in use, when the external electromagnet is energized, a magnetic field is generated, which interacts with the magnetic block 203 at the end of the driven rod 202. Since the magnetic block 203 is made of magnetic material, it will be attracted under the action of the magnetic field, thereby driving the driven rod 202 and the lower half of the inner frame 2 to swing back and forth along the guide groove 101 on the inner side of the outer frame 1. This back and forth swinging motion allows the diaphragm 4 to be dynamically adjusted according to the flow of electrolyte and ion concentration distribution inside the battery.

[0026] For example, during battery charging, the ion concentration in the electrolyte may change, resulting in uneven ion transport paths. In this case, by controlling the current intensity and direction of the external electromagnet, the magnitude and direction of the magnetic force on the magnetic block 203 can be adjusted, thereby causing the lower half of the inner frame 2 to swing back and forth with the diaphragm 4, optimizing the ion transport path, improving ion transport efficiency, thereby accelerating the charging speed and reducing energy loss during the charging process.

[0027] Meanwhile, since the oscillation of the diaphragm 4 is driven by magnetic force, the entire movement process does not require a complex mechanical transmission device, reducing the possibility of mechanical wear and failure. This not only reduces the maintenance cost of the battery, but also improves the battery's operating efficiency and safety.

[0028] Specifically, a diaphragm 4 is installed inside the inner frame 2. This design allows the diaphragm 4 to be well protected and prevents it from being damaged by external mechanical forces during use. At the same time, the structural design of the inner frame 2 also provides stable support for the diaphragm 4, ensuring that it can maintain good performance during battery operation.

[0029] Specifically, sealing frames 3 are glued to the front and rear surfaces of the outer frame 1 and the inner frame 2. The sealing frames 3 are made of flexible rubber. The design of the sealing frames 3 can effectively prevent electrolyte leakage and ensure the sealing of the battery. At the same time, the glued installation method is simple to operate and has a firm connection, which can effectively improve the assembly efficiency and reliability of the diaphragm device.

[0030] Please see the appendix Figure 3 As shown.

[0031] The guide groove 101 is a cylindrical design in the front and rear horizontal direction. This design gives the guide groove 101 good guiding performance and structural stability. The cylindrical guide groove 101 can provide a smooth guiding path for the movement of the inner frame 2, reduce friction and resistance during the movement, thereby improving the operating efficiency and reliability of the diaphragm device.

[0032] Furthermore, the magnetic block 203 is designed as a sphere and slides back and forth in the guide groove 101. The spherical design allows the magnetic block 203 to slide flexibly in the guide groove 101, while reducing the friction between the magnetic block 203 and the guide groove 101. This design not only improves the movement flexibility of the magnetic block 203, but also further reduces the energy consumption of the diaphragm device.

[0033] Please see the appendix Figure 4 As shown.

[0034] A limiting rod 204 is fixedly installed inside the inner frame 2. Multiple limiting rods 204 are arranged in a staggered pattern. The diaphragm 4 is limited by the limiting rods 204 and is distributed in a wave-like pattern inside the inner frame 2. This wave-like distribution design can increase the surface area of ​​the diaphragm 4, thereby improving its ion conduction efficiency. At the same time, the staggered distribution of the limiting rods 204 can effectively fix the position of the diaphragm 4, preventing it from deforming or shifting during use. Increasing the surface area of ​​the diaphragm 4 can improve its ion conduction efficiency, thereby increasing the battery capacity. The fixing effect of the limiting rods 204 can enhance the stability of the diaphragm 4 and improve the battery's service life.

[0035] Please see the appendix Figure 5 As shown.

[0036] The separator 4 is provided with raised strips 402, and multiple raised strips 402 are provided and covered on the separator 4. The raised strips 402 are inclinedly distributed. Holes 401 are opened on both the separator 4 and the raised strips 402. This design can further increase the surface area and ion conduction channels of the separator 4, thereby improving its ion conduction efficiency. At the same time, the inclined raised strips 402 can guide the flow direction of ions and reduce the accumulation of ions on the surface of the separator 4. Increasing the ion conduction channels and guiding the ion flow can improve the charging and discharging efficiency of the battery and shorten the charging time. Meanwhile, reducing the accumulation of ions on the surface of the separator 4 can reduce the internal resistance of the battery and improve the output power of the battery.

[0037] When the battery is not in operation, the redox flow battery separator is in an initial static state. At this time, the inner frame 2 is suspended inside the outer frame 1 by the rotating shaft 201. The magnetic block 203 at the end of the driven rod 202 of the lower half of the inner frame 2 is located in the middle of the guide groove 101. The separator 4 is installed inside the inner frame 2 and is distributed in a wave-like shape. The raised strips 402 and holes 401 on its surface are in a ready-to-work state. The front and rear surfaces of the outer frame 1 and the inner frame 2 are sealed by the sealing frame 3 installed with adhesive to ensure the sealing of the battery.

[0038] When the battery begins charging, the ion concentration in the electrolyte changes, potentially causing uneven ion transport paths. At this time, an external electromagnet is energized, generating a magnetic field. This magnetic field interacts with the magnetic block 203 at the end of the driven rod 202. Since the magnetic block 203 is made of magnetic material, it is attracted or repelled by the magnetic field, causing the driven rod 202 and the lower half of the inner frame 2 to swing back and forth along the guide groove 101 inside the outer frame 1. By controlling the current intensity and direction of the external electromagnet, the magnitude and direction of the magnetic force on the magnetic block 203 can be adjusted. For example... When it is necessary to increase the forward swing amplitude of the diaphragm 4, the current intensity of the electromagnet can be increased, so that the magnetic block 203 is subjected to a stronger attraction, thereby driving the inner frame 2 to swing forward. The back-and-forth swing of the inner frame 2 causes the diaphragm 4 to swing accordingly. The wave-shaped distribution of the diaphragm 4 and the design of the raised strips 402 increase its surface area and ion conduction channels, which can be dynamically adjusted according to the flow of electrolyte and ion concentration distribution to optimize the ion transport path. This dynamic adjustment can improve ion transport efficiency, thereby speeding up the charging speed and reducing energy loss during the charging process.

Claims

1. A redox flow battery separator, comprising an outer frame (1), an inner frame (2), and a separator (4), characterized in that: An inner frame (2) is suspended inside the outer frame (1); A guide groove (101) is provided on the inner surface of the outer frame (1) near the bottom; A rotating shaft (201) is rotatably mounted on the outer surfaces of both sides of the inner frame (2) near the top, and the other end of the rotating shaft (201) is rotatably connected to the inner surface of the outer frame (1); A driven rod (202) is fixedly installed on the outer surfaces of both sides of the inner frame (2) near the bottom, and a magnetic block (203) is fixedly installed on the other end of the driven rod (202); A diaphragm (4) is installed inside the inner frame (2).

2. The redox flow battery separator according to claim 1, characterized in that: The guide groove (101) is a cylindrical design in the front and rear horizontal direction.

3. The redox flow battery separator according to claim 1, characterized in that: The magnetic block (203) is designed as a sphere and slides back and forth in the guide groove (101).

4. The redox flow battery separator according to claim 1, characterized in that: Sealing frames (3) are glued to the front and rear surfaces of the outer frame (1) and the inner frame (2).

5. The redox flow battery separator according to claim 1, characterized in that: The inner frame (2) is fixedly installed with a limit rod (204); Multiple limiting rods (204) are provided, and they are arranged in a staggered manner. The diaphragm (4) is limited by the limiting rod (204) and is distributed in a wave shape inside the inner frame (2).

6. The redox flow battery separator according to claim 1, characterized in that: The diaphragm (4) is provided with raised strips (402); The raised strips (402) are provided in multiple ways and are spread on the diaphragm (4), and the raised strips (402) are distributed at an angle; Holes (401) are provided on both the diaphragm (4) and the raised strip (402).

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