Quick-release ion exchange membrane structure of all-vanadium redox flow battery

Abstract

The utility model discloses a quick-release ion exchange membrane structure of an all-vanadium redox flow battery, which comprises a pair of electrode frames, the pair of electrode frames are oppositely arranged, four corners of the pair of electrode frames are symmetrically provided with two pairs of connecting holes, and a quick-release membrane structure is arranged between the pair of electrode frames; the utility model relates to the technical field of redox flow batteries, in particular to a quick-release ion exchange membrane structure of an all-vanadium redox flow battery, which is characterized in that a dismounting channel of an ion exchange membrane is arranged between a pair of electrode frames through a slot, and the ion exchange membrane is limited and is quickly released; the ion exchange membrane can be quickly detached from the flow battery, separation and replacement of the ion exchange membrane are completed, and a galvanic pile of the battery does not need to be completely detached, so that the detaching and replacing efficiency is higher, and the detaching and replacing operation is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of flow battery technology, specifically to a quick-release ion exchange membrane structure for an all-vanadium redox flow battery. Background Technology

[0002] In the application of modern vanadium redox flow batteries, ion exchange membranes play a role in exchanging ions and isolating the electrolyte, and are an important component of vanadium redox flow batteries.

[0003] Current fuel cell stacks are often composed of multiple single-cell modules. Each single-cell module consists of a closed frame, a pair of bipolar plates, a pair of electrodes, and an ion exchange membrane. However, to facilitate installation and maintain a seal, current ion exchange membranes often use soft insulating pads placed between the frames of the pair of electrodes. But when replacing the ion exchange membrane, this structure requires the complete removal of the single-cell module, which is very inconvenient. In view of this, this case was developed through in-depth research on the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a quick-release ion exchange membrane structure for vanadium redox flow batteries, thus solving the existing technical problems.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a quick-release ion exchange membrane structure for a vanadium redox flow battery, comprising a pair of electrode frames, the pair of electrode frames being arranged opposite to each other, two pairs of connecting holes being symmetrically arranged at the four corners of the pair of electrode frames, and a quick-release membrane structure being provided between the pair of electrode frames.

[0006] The quick-release membrane structure includes a pair of guide grooves; a pair of guide grooves are provided on the pair of electrode frames, the pair of guide grooves penetrate the top surface of the pair of electrode frames, and a pair of pressing grooves are provided on both sides of the pair of guide grooves, the pair of pressing grooves being a pair of rectangular grooves;

[0007] The quick-release membrane structure also includes a membrane frame, which is a rectangular frame. The two sides of the membrane frame are matched with a pair of pressure grooves. An ion exchange membrane body is set in the center of the membrane frame. A telescopic plate extends from the upper part of the membrane frame and is set between a pair of guide grooves. A traction ring is set on the top of the telescopic plate.

[0008] Preferably, the edges of both pressure grooves are sloped, and the two sides of the membrane frame are also sloped and match the edges of the pressure grooves.

[0009] Preferably, the width of the pair of guide grooves matches the width of the telescopic plate, and the spacing between the pair of guide grooves matches the thickness of the telescopic plate.

[0010] Preferably, a limiting strip extends integrally from the top of the telescopic plate, and a pair of socket grooves are provided at the top of the pair of guide grooves to match the limiting strip.

[0011] Preferably, the limiting strip has two pairs of locking blocks on both sides, and one pair of socket grooves has two pairs of locking slots that engage with the two pairs of locking blocks.

[0012] Preferably, the traction ring, the limiting strip, and the telescopic plate are integrally formed.

[0013] Beneficial effects

[0014] This invention provides a quick-release ion exchange membrane structure for a vanadium redox flow battery. It offers the following advantages: The quick-release ion exchange membrane structure of this vanadium redox flow battery features a slotted channel between a pair of electrode frames for the installation and removal of the ion exchange membrane. Simultaneously, the ion exchange membrane is positioned within a defined space. This quick-release design allows the ion exchange membrane to be rapidly removed from the flow battery and separated, enabling replacement without completely disassembling the battery stack. Therefore, the replacement efficiency is higher, and the operation is more convenient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first burst structure of the quick-release ion exchange membrane structure of the all-vanadium redox flow battery described in this utility model.

[0016] Figure 2 This is a three-dimensional structural diagram of the quick-release ion exchange membrane structure of the all-vanadium redox flow battery described in this utility model.

[0017] Figure 3 This is a schematic diagram of the second burst structure of the quick-release ion exchange membrane structure of the all-vanadium redox flow battery described in this utility model.

[0018] Figure 4 This is a cross-sectional schematic diagram of the quick-release ion exchange membrane structure of the vanadium redox flow battery described in this utility model.

[0019] In the diagram: 1. Electrode frame; 2. Connecting hole; 3. Guide groove; 4. Pressing groove; 5. Membrane frame; 6. Ion exchange membrane body; 7. Telescopic plate; 8. Traction ring; 9. Limiting strip; 10. Locking block; 11. Locking slot. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides an implementation scheme: In the modern vanadium redox flow battery stack structure, the ion exchange membrane is often used in conjunction with the electrode frame 1 to fix and install the ion exchange membrane. However, when replacing the ion exchange membrane in this stack structure, the stack needs to be fully unfolded and the single cell assembly needs to be directly removed from the stack to replace the ion exchange membrane, which is very inconvenient.

[0022] To address the aforementioned issues, this application discloses a quick-release ion exchange membrane structure for a vanadium redox flow battery, comprising a pair of electrode frames 1 arranged opposite to each other, two pairs of connecting holes 2 symmetrically arranged at the four corners of the pair of electrode frames 1, the pair of electrode frames 1 fixing the positive and negative electrodes, and a quick-release membrane structure disposed between the pair of electrode frames 1. The quick-release membrane structure adopts a quick-release design and is disposed between the pair of electrode frames 1.

[0023] According to the instruction manual Figure 1-4 It can be seen that the above-mentioned quick-release membrane structure includes a pair of guide grooves 3; a pair of guide grooves 3 are provided on a pair of electrode frames 1, the pair of guide grooves 3 penetrate through the top surface of the pair of electrode frames 1, and a pair of pressing grooves 4 are provided on both sides of the pair of guide grooves 3, the pair of pressing grooves 4 being a pair of rectangular grooves.

[0024] The quick-release membrane structure also includes a membrane frame 5, which is a rectangular frame. The two sides of the membrane frame 5 are matched with a pair of pressure grooves 4. An ion exchange membrane body 6 is set in the center of the membrane frame 5. A telescopic plate 7 extends from the upper part of the membrane frame 5. The telescopic plate 7 is set between a pair of guide grooves 3. A traction ring 8 is set on the top of the telescopic plate 7.

[0025] In the specific implementation process, the membrane frame 5 fixes the ion exchange membrane body 6. The ion exchange membrane body 6 corresponds to the positive and negative electrodes on a pair of electrode frames 1. The telescopic plate 7 on the membrane frame 5 and a pair of guide grooves 3 limit each other. The pair of guide grooves 3 are arranged opposite each other to form a telescopic channel. When replacing the ion exchange membrane body 6, the bolts of the stack are loosened, and the single cell assembly to be replaced is loosened, so that the pair of electrode frames 1 are slightly loosened, so that the spacing of the pair of electrode frames 1 is separated, and the width of the pair of guide grooves 3 can match the width of the membrane frame 5. The telescopic plate 7 is pulled by the traction ring 8, so that the telescopic plate 7 drives the membrane frame 5 to move, so that the membrane frame 5 is separated from the pair of guide grooves 3. The shape of the membrane frame 5 matches the pressure groove 4. After replacement, the pair of pressure grooves 4 symmetrically lock the two sides of the membrane frame 5 to fix the membrane frame 5, thereby realizing the positioning of the ion exchange membrane body 6.

[0026] As a preferred option, the edges of the pair of pressure grooves 4 are both sloped, and the two sides of the membrane frame 5 are also sloped and match the edges of the pressure grooves 4. The pair of pressure grooves 4 can seal with the two sides of the membrane frame 5, thereby preventing electrolyte leakage.

[0027] As a preferred option, the width of the pair of guide grooves 3 matches the width of the telescopic plate 7, and the spacing between the pair of guide grooves 3 matches the thickness of the telescopic plate 7. After the membrane frame 5 is placed between the pair of electrode frames 1, the pair of electrode frames 1 are interlocked to limit the mutual positioning of the pair of guide grooves 3 and the telescopic plate 7, thereby preventing electrolyte leakage.

[0028] As a preferred option, the top of the telescopic plate 7 extends integrally with a limiting strip 9, and the top of a pair of guide grooves 3 is provided with a pair of socket grooves that match the limiting strip 9. Through the matching of the limiting strip 9 and the socket groove, the upper part of the telescopic plate 7 is positioned, thereby further limiting the membrane frame 5.

[0029] As a preferred option, the limiting strip 9 is further provided with two pairs of locking blocks 10 on both sides. Two pairs of locking slots 11 are provided on one pair of socket grooves to engage with the two pairs of locking blocks 10. The limiting strip 9 is fixed by the mutual connection and limiting of the locking blocks 10 and the locking slots 11.

[0030] As a preferred option, the traction ring 8, the limiting strip 9, and the telescopic plate 7 are integrally formed.

[0031] In summary, the quick-release ion exchange membrane structure of this vanadium redox flow battery features a slotted channel between a pair of electrode frames 1 for the installation and removal of the ion exchange membrane. This quick-release design allows the ion exchange membrane to be rapidly removed from the flow battery for replacement without completely disassembling the battery stack. Therefore, the replacement efficiency is higher and the operation is more convenient.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-release ion exchange membrane structure for a vanadium redox flow battery, comprising a pair of electrode frames (1), the pair of electrode frames (1) being arranged opposite to each other, and two pairs of connecting holes (2) symmetrically arranged at the four corners of the pair of electrode frames (1), characterized in that, A quick-release membrane structure is provided between the pair of electrode frames (1); The quick-release membrane structure includes a pair of guide grooves (3); a pair of guide grooves (3) are provided on a pair of electrode frames (1), the pair of guide grooves (3) penetrate the top surface of the pair of electrode frames (1), and a pair of pressing grooves (4) are provided on both sides of the pair of guide grooves (3), the pair of pressing grooves (4) are a pair of rectangular grooves. The quick-release membrane structure also includes a membrane frame (5), which is a rectangular frame. The two sides of the membrane frame (5) are matched with a pair of pressure grooves (4). An ion exchange membrane body (6) is provided in the center of the membrane frame (5). A telescopic plate (7) extends from the upper part of the membrane frame (5). The telescopic plate (7) is located between a pair of guide grooves (3). A traction ring (8) is provided on the top of the telescopic plate (7).

2. The quick-release ion exchange membrane structure for a vanadium redox flow battery according to claim 1, characterized in that, The edges of the pair of pressure grooves (4) are both sloped, and the two sides of the membrane frame (5) are also sloped and match the edges of the pressure grooves (4).

3. The quick-release ion exchange membrane structure for a vanadium redox flow battery according to claim 2, characterized in that, The width of the pair of guide grooves (3) matches the width of the telescopic plate (7), and the spacing between the pair of guide grooves (3) matches the thickness of the telescopic plate (7).

4. The quick-release ion exchange membrane structure for a vanadium redox flow battery according to claim 3, characterized in that, The top of the telescopic plate (7) extends integrally with a limiting strip (9), and the top of the pair of guide grooves (3) is provided with a pair of socket grooves that match the limiting strip (9).

5. The quick-release ion exchange membrane structure for a vanadium redox flow battery according to claim 4, characterized in that, The limiting strip (9) has two pairs of locking blocks (10) on both sides, and two pairs of locking slots (11) are provided on one pair of socket grooves to engage with the two pairs of locking blocks (10).

6. The quick-release ion exchange membrane structure for a vanadium redox flow battery according to claim 5, characterized in that, The traction ring (8), the limiting strip (9), and the telescopic plate (7) are integrally formed.

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