All-vanadium redox flow battery device with anti-pollution separator

Abstract

The utility model provides a full vanadium liquid flow battery device with anti -pollution diaphragm relates to full vanadium liquid flow battery technical field, including box body, the inside of box body is provided with bottom plate and side plate A and side plate B, the top of box body is provided with the apron, the top fixed mounting of apron has the lug and the connecting block, the bottom fixed mounting of apron has the top plate, realized the quick disassembly and maintenance of diaphragm body and electrode system, diaphragm body adopts fixed ring and installation rod sliding fit, and combines the design and the block type electrode connection of through -groove, effectively promote diaphragm anti -pollution ability and facilitate regular cleaning, the mounting plate of modular design, bipolar plate and fixed plate realize accurate positioning through sliding guide rail and screw nut pair, guarantee structural stability and be convenient for parameter adjustment, the sliding connection of apron and box body cooperates recess seal structure, enhances the closed nature of system while simplifying the overhaul process, significantly reduce equipment downtime and operation and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of vanadium redox flow battery technology, and in particular to a vanadium redox flow battery device with an anti-pollution diaphragm. Background Technology

[0002] A vanadium redox flow battery is a liquid redox battery using vanadium as the active material. Its working principle is based on the electrochemical redox reactions that occur between vanadium ions of different valence states on the electrode surface. This battery uses an external pump to pump electrolyte into the battery stack, allowing the electrolyte to circulate in closed loops within different storage tanks and half-cells. The electrolyte solution flows parallel across the electrode surface and undergoes electrochemical reactions. Current is collected and conducted through dual electrode plates, thus converting the chemical energy stored in the solution into electrical energy.

[0003] In the prior art, such as the vanadium redox flow battery charging device disclosed in Chinese Publication No. CN223193825U, there is a vanadium battery charging cabinet with two sliding doors. An emergency auxiliary heat dissipation mechanism includes a connecting plate, an electric telescopic rod, a push plate, a main block, and an auxiliary block. The connecting plate is fixedly connected to the side of the doors, the electric telescopic rod is fixedly installed on the side of the vanadium battery charging cabinet, and the telescopic end of the electric telescopic rod is fixedly connected to the push plate. The main block and the auxiliary block are fixedly connected, and the main block is engaged with the push plate. This invention has the following advantages and effects: when the internal temperature of the vanadium battery charging cabinet exceeds a set value, both doors open, exposing the front and rear openings of the vanadium battery charging cabinet, increasing the internal heat dissipation area, and facilitating heat dissipation through the internal cooling fan. Switching between doors is also convenient.

[0004] The above-mentioned technology has achieved the effect of allowing multiple people to use it simultaneously, but there are still some shortcomings, specifically: Traditional vanadium redox flow batteries generally adopt an integrated membrane frame structure. During long-term operation, the deposits precipitated from the electrolyte are prone to adhere to the membrane surface, forming irreversible contamination. This leads to increased ion transport resistance and difficulty in removal. The rigid and fixed electrode arrangement limits the dynamic optimization of the reaction interface state. When concentration polarization occurs in a local area, it cannot be adjusted in time. Furthermore, the complex internal structure requires extensive disassembly for manual cleaning and troubleshooting, ultimately resulting in accelerated efficiency decay and shortened lifespan of the battery stack. Utility Model Content

[0005] The vanadium redox flow battery device with an anti-fouling diaphragm proposed in this utility model realizes rapid disassembly and maintenance of the diaphragm body and electrode system. The diaphragm body adopts a sliding fit between the fixing ring and the mounting rod, combined with the through-slot design and the snap-fit ​​electrode connection, which effectively improves the anti-fouling ability of the diaphragm and facilitates regular cleaning. The modular design of the mounting plate, bipolar plate and fixing plate achieves precise positioning through the sliding guide rail and the lead screw and nut pair, which not only ensures structural stability but also facilitates parameter adjustment. The sliding connection between the cover plate and the box body, combined with the groove sealing structure, enhances the system's airtightness while simplifying the maintenance process, significantly reducing equipment downtime and operation and maintenance costs, thereby solving the problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a vanadium redox flow battery device with an anti-pollution diaphragm, comprising a housing, wherein a bottom plate, a side plate A, and a side plate B are provided inside the housing, a cover plate is provided at the top of the housing, a protrusion and a connecting block are fixedly installed at the top of the cover plate, a top plate is fixedly installed at the bottom of the cover plate, a diaphragm body is provided inside the housing, a fixing ring is provided on the side of the diaphragm body, an mounting plate A and a positive electrode plate are provided on the left side of the fixing ring, an mounting plate and a negative electrode plate are provided on the right side of the fixing ring, a bipolar plate is provided on the side of the fixing ring, a fixing plate is provided on the side of the bipolar plate, an mounting rod is provided inside the fixing plate, a rotating block is fixedly installed on the right side of the mounting rod, and a lead screw and a nut are provided on the left side of the mounting rod.

[0007] Preferably, the top of the top plate has a groove A, the surface of the side plate A has a groove B, the cover plate is slidably connected to the box body, the side of the connecting block has a connecting groove, and the bottom of the top plate has a groove C.

[0008] Preferably, the diaphragm body is slidably connected to the mounting rod via a fixing groove A, the fixing ring is slidably connected to the mounting rod, the top of the fixing ring has a through groove A, the surface of the fixing ring has a through groove B, the mounting plate A is slidably connected to the mounting rod via the fixing groove B, the positive electrode plate is slidably connected to the mounting plate A, and a locking block A is fixedly installed on the surface of the positive electrode plate, the locking block A being slidably connected to the mounting plate A via a locking groove A.

[0009] Preferably, the mounting plate B is slidably connected to the mounting rod via the fixing groove C, the negative electrode plate is slidably connected to the mounting plate B, a locking block B is fixedly mounted on the surface of the negative electrode plate, the locking block B is slidably connected to the mounting plate B via the locking groove B, and the bipolar plate is slidably connected to the mounting rod via the fixing groove D.

[0010] Preferably, the fixing plate is slidably connected to the mounting rod via the mounting groove, the lead screw is slidably connected to the fixing plate via the mounting groove, the rotating block is slidably connected to the fixing plate via the storage groove, the nut is rotatably connected to the lead screw, and a lifting groove is provided at the top of the fixing plate, with a lifting rod provided inside the lifting groove.

[0011] Preferably, a sealing gasket A is fixedly installed on the surface of the box body, a sealing plate is fixedly installed at the bottom end of the cover plate, a sealing gasket B is fixedly installed at the bottom end of the sealing plate, a fixing block is fixedly installed on the side of the box body, a threaded rod is provided inside the fixing block, and a throttle is fixedly installed on the right side of the threaded rod.

[0012] Preferably, the cover plate is slidably connected to the sealing gasket A, the sealing plate is slidably connected to the box body through the sealing groove, the sealing gasket B is slidably connected to the box body through the sealing groove, the threaded rod is rotatably connected to the sealing plate through the positioning groove, and the threaded rod is rotatably connected to the fixing block through the threaded groove.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the following components are included: base plate, groove A, side plate A, groove B, side plate B, cover plate, protrusion, connecting block, connecting groove, top plate, groove C, diaphragm body, fixing groove A, fixing ring, through groove A, through groove B, mounting plate A, fixing groove B, slot A, positive electrode sheet, slot A, mounting plate B, fixing groove C, slot B, negative electrode sheet, slot B, bipolar plate, fixing groove D, fixing plate, storage groove, mounting groove, mounting rod, rotating block, lead screw, nut, lifting groove and lifting rod, which realize the connection between the diaphragm body and the electrode. The system features rapid assembly, disassembly, and maintenance. The diaphragm body utilizes a sliding engagement between a fixing ring and an installation rod, combined with a through-groove design and snap-fit ​​electrode connections. This effectively enhances the diaphragm's anti-fouling capabilities and facilitates regular cleaning. The modularly designed mounting plate, bipolar plate, and fixing plate achieve precise positioning via sliding guides and a screw-nut pair, ensuring structural stability and facilitating parameter adjustments. The sliding connection between the cover plate and the housing, along with a grooved sealing structure, enhances system airtightness while simplifying maintenance procedures, significantly reducing equipment downtime and operating costs.

[0014] 2. In this utility model, the sealing gasket A, sealing groove, sealing plate, sealing gasket B, positioning groove, fixing block, threaded groove, threaded rod, and handle improve the sealing reliability and maintenance convenience of the system. The sealing gasket A on the surface of the box and the sealing plate at the bottom of the cover form a double barrier. With the elastic compensation effect of the sealing gasket B, the electrolyte overflow path is effectively blocked. The mechanical drive system composed of the threaded rod and the handle can adjust the pressure of the sealing plate on the diaphragm assembly in real time through rotation operation, which not only ensures the sealing stability under long-term operation, but also facilitates quick disassembly for maintenance. Attached Figure Description

[0015] Figure 1 A three-dimensional structural perspective view of a vanadium redox flow battery device with an anti-pollution diaphragm is provided for this utility model. Figure 2 An exploded perspective view of the housing structure of the all-vanadium redox flow battery device with an anti-pollution diaphragm is provided for this utility model. Figure 3 This invention proposes a vanadium redox flow battery device with an anti-pollution diaphragm. Figure 2 Enlarged 3D view of the structure at point A in the middle; Figure 4 An exploded perspective view of the cover plate structure of the all-vanadium redox flow battery device with an anti-pollution diaphragm is provided for this utility model. Figure 5 An exploded bottom-view perspective view of the cover plate structure of the all-vanadium redox flow battery device with an anti-pollution diaphragm is provided for this utility model. Figure 6 An exploded perspective view of the electrode sheet structure of the all-vanadium redox flow battery device with an anti-pollution diaphragm is provided for this utility model. Figure 7 An exploded perspective view of the fixed plate structure of the all-vanadium redox flow battery device with an anti-pollution diaphragm proposed in this utility model.

[0016] Legend: 1. Box body; 2. Base plate; 3. Groove A; 4. Side plate A; 5. Groove B; 6. Side plate B; 7. Cover plate; 8. Protrusion; 9. Connecting block; 10. Connecting groove; 11. Top plate; 12. Groove C; 13. Diaphragm body; 14. Fixing groove A; 15. Fixing ring; 16. Through groove A; 17. Through groove B; 18. Mounting plate A; 19. Fixing groove B; 20. Slot A; 21. Positive electrode plate; 22. Locking block A; 23. Mounting plate B; 24. Fixing 25. Slot C; 26. Slot B; 27. Negative electrode plate; 28. Block B; 29. ​​Bipolar plate; 20. Fixing slot D; 31. Fixing plate; 32. Storage slot; 33. Mounting slot; 34. Mounting rod; 35. Rotating block; 36. Lead screw; 37. Nut; 38. Lifting slot; 39. Lifting rod; 40. Sealing gasket A; 41. Sealing slot; 42. Sealing plate; 43. Sealing gasket B; 44. Positioning slot; 45. Fixing block; 46. Threaded groove; 47. Threaded rod; 48. Turning handle. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Example 1: As Figures 1-4 As shown, this utility model provides a technical solution: a vanadium redox flow battery device with an anti-pollution diaphragm, including a housing 1. The housing 1 has a bottom plate 2, a side plate A4, and a side plate B6 inside. A cover plate 7 is provided at the top of the housing 1. A protrusion 8 and a connecting block 9 are fixedly installed at the top of the cover plate 7. A top plate 11 is fixedly installed at the bottom of the cover plate 7. A diaphragm body 13 is provided inside the housing 1. A fixing ring 15 is provided on the side of the diaphragm body 13. A mounting plate A18 and a positive electrode 21 are provided on the left side of the fixing ring 15, and a mounting plate and a negative electrode 26 are provided on the right side of the fixing ring 15. A bipolar plate 28 is provided on the side of ring 15, and a fixing plate 30 is provided on the side of bipolar plate 28. An installation rod 33 is provided inside the fixing plate 30. A rotating block 34 is fixedly installed on the right side of the installation rod 33, and a lead screw 35 and a nut 36 are provided on the left side of the installation rod 33. A groove A3 is opened at the top of the top plate 11, and a groove B5 is opened on the surface of the side plate A4. The cover plate 7 is slidably connected to the box body 1. A connecting groove 10 is opened on the side of the connecting block 9, and a groove C12 is opened at the bottom of the top plate 11. The diaphragm body 13 is slidably connected to the installation rod 33 through the fixing groove A14. The fixing ring 15 is slidably connected to the mounting rod 33. A through groove A16 is formed at the top of the fixing ring 15, and a through groove B17 is formed on the surface of the fixing ring 15. The mounting plate A18 is slidably connected to the mounting rod 33 via the fixing groove B19. The positive electrode 21 is slidably connected to the mounting plate A18. A locking block A22 is fixedly mounted on the surface of the positive electrode 21. The locking block A22 is slidably connected to the mounting plate A18 via the locking groove A20. The mounting plate B23 is slidably connected to the mounting rod 33 via the fixing groove C24. The negative electrode 26 is slidably connected to the mounting plate B23. A locking block B27 is fixedly installed on the surface of plate 26. The locking block B27 is slidably connected to the mounting plate B23 through the locking groove B25. The bipolar plate 28 is slidably connected to the mounting rod 33 through the fixing groove D29. The fixing plate 30 is slidably connected to the mounting rod 33 through the mounting groove 32. The lead screw 35 is slidably connected to the fixing plate 30 through the mounting groove 32. The rotating block 34 is slidably connected to the fixing plate 30 through the storage groove 31. The nut 36 is rotatably connected to the lead screw 35. The top of the fixing plate 30 is provided with a lifting groove 37, and a lifting rod 38 is provided inside the lifting groove 37.

[0020] In this embodiment, the sliding assembly structure of the positive and negative electrode plates 26 and bipolar plates 28 effectively solves the problem of decreased ion permeability caused by electrolyte impurity deposition in traditional flow battery separators. The design of a split box 1 and cover plate 7 with sliding connection, combined with the electrode assembly of the card block-slot structure, enables rapid disassembly and replacement of the core battery components, significantly improving the maintainability of the equipment. The adjusting mechanism of the rotating block 34 driven by the lead screw 35 and nut 36 can accurately control the position of the separator and optimize the current distribution. The lifting groove 37 and lifting rod 38 make the operation process more convenient and safe. The overall modular design simplifies the assembly process, improves production efficiency, enhances the operational stability and service life of the battery system, and reduces long-term maintenance costs.

[0021] Example 2: As Figure 1 , Figure 4 , Figure 5 As shown, a sealing gasket A39 is fixedly installed on the surface of the box body 1, a sealing plate 41 is fixedly installed at the bottom of the cover plate 7, a sealing gasket B42 is fixedly installed at the bottom of the sealing plate 41, a fixing block 44 is fixedly installed on the side of the box body 1, a threaded rod 46 is provided inside the fixing block 44, a handle 47 is fixedly installed on the right side of the threaded rod 46, the cover plate 7 and the sealing gasket A39 are slidably connected, the sealing plate 41 is slidably connected to the box body 1 through the sealing groove 40, the sealing gasket B42 is slidably connected to the box body 1 through the sealing groove 40, the threaded rod 46 is rotatably connected to the sealing plate 41 through the positioning groove 43, and the threaded rod 46 is rotatably connected to the fixing block 44 through the threaded groove 45.

[0022] In this embodiment, the airtightness and leak-proof performance of the vanadium redox flow battery are improved, effectively solving the problems of electrolyte evaporation and external impurity intrusion. The threaded rod 46-throttle 47 drive mechanism, combined with the positioning groove 43 / threaded groove 45 design, achieves precise and adjustable clamping of the sealing plate 41, ensuring sealing reliability and facilitating quick disassembly and maintenance. The sliding connection structure optimizes the assembly relationship between the housing 1 and the sealing components, allowing the sealing plate 41 to move smoothly through the sealing groove 40 to complete the alignment, greatly reducing the assembly difficulty. The overall sealing system has dynamic compensation capability, which can adapt to volume changes during battery charging and discharging, extending the service life of the sealing structure. At the same time, it simplifies the later maintenance process and significantly improves the operational stability and maintenance efficiency of the equipment.

[0023] The working principle of this embodiment is as follows: First, place the box 1 in the desired position. Then, install the mounting rod 33 inside the fixing plate 30 through the mounting groove 32. At this time, the rotating block 34 is fixed inside the fixing plate 30 through the storage groove 31. Next, install the bipolar plate 28 on the surface of the mounting rod 33 through the fixing groove D29. Then, install the fixing ring 15 on the surface of the mounting rod 33. Next, install the negative electrode plate 26 inside the mounting plate B23, and the locking block B27 slides into the mounting plate B23 through the locking groove B25. Then, install the mounting plate B23 on the surface of the mounting rod 33 through the fixing groove C24. Finally, place the diaphragm... Body 13 is mounted on the surface of mounting rod 33 via fixing groove A14. Positive electrode plate 21 is then mounted inside mounting plate A18, allowing locking block A22 to slide into mounting plate A18 via locking groove A20. Mounting plate A18 is then mounted on the surface of mounting rod 33 via fixing groove B19. Subsequent mountings are then installed sequentially. Finally, fixing plate 30 is fixed to the surface of lead screw 35 via mounting groove 32, and nut 36 is then fixed to the surface of lead screw 35. At this point, fixing plate 30 can be installed inside box 1 via lifting rod 38 inside lifting groove 37, and bottom plate 2 firmly supports fixing plate 30, while side plate A4... The side plate B6 is attached to the side of the fixing plate 30. Electrolyte is then poured into the interior of the box 1. The cover plate 7 is then pressed down onto the box 1, causing the sealing plate 41 to slide downwards through the sealing groove 40 at the top of the box 1. Once the sealing plate 41 and sealing gasket B42 are fully inserted into the box 1, the cover plate 7 is fixed to the top of the box 1 by the sealing gasket A39. The top plate 11 at the bottom of the cover plate 7 secures it firmly. Then, the handle 47 is squeezed to align the threaded rod 46 with the threaded groove 45 and rotated, causing the threaded rod 46 to rotate into the fixing block 44 through the threaded groove 45. The wire is fully inserted into the fixed block 44 through the threaded groove 45 and passes through the sealing plate 41 through the positioning groove 43. Finally, the connecting wire is fixed to the surface of the connecting block 9 through the connecting groove 10. It can be used through the protrusion 8. During use, the magnetic field generated by the positive electrode 21 and the negative electrode 26 can cause the electrolyte to flow through the groove A3 inside the bottom plate 2, through the groove B5 inside the side plate A4, through the groove C12 inside the top plate 11, and finally through the through grooves A16 and B17 inside the fixed ring 15, carrying away impurities from inside the fixed ring 15.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A vanadium redox flow battery device with an anti-fouling diaphragm, comprising a housing (1), characterized in that: The box body (1) is provided with a bottom plate (2), a side plate A (4), and a side plate B (6) inside. The top of the box body (1) is provided with a cover plate (7). A protrusion (8) and a connecting block (9) are fixedly installed on the top of the cover plate (7). A top plate (11) is fixedly installed on the bottom of the cover plate (7). The box body (1) is provided with a diaphragm body (13). A fixing ring (15) is provided on the side of the diaphragm body (13). A mounting ring (15) is provided on the left side of the fixing ring (15). The mounting plate A (18) and the positive electrode plate (21) are mounted. The right side of the fixing ring (15) is provided with a mounting plate and a negative electrode plate (26). The side of the fixing ring (15) is provided with a bipolar plate (28). The side of the bipolar plate (28) is provided with a fixing plate (30). The inside of the fixing plate (30) is provided with a mounting rod (33). The right side of the mounting rod (33) is fixedly mounted with a rotating block (34). The left side of the mounting rod (33) is provided with a lead screw (35) and a nut (36).

2. The all-vanadium redox flow battery device with an anti-fouling diaphragm according to claim 1, characterized in that: The top plate (11) has a groove A (3) at its top end, the side plate A (4) has a groove B (5) on its surface, the cover plate (7) is slidably connected to the box body (1), the side of the connecting block (9) has a connecting groove (10), and the bottom of the top plate (11) has a groove C (12).

3. The all-vanadium redox flow battery device with an anti-fouling diaphragm according to claim 1, characterized in that: The diaphragm body (13) is slidably connected to the mounting rod (33) through the fixing groove A (14), the fixing ring (15) is slidably connected to the mounting rod (33), the top of the fixing ring (15) is provided with a through groove A (16), the surface of the fixing ring (15) is provided with a through groove B (17), the mounting plate A (18) is slidably connected to the mounting rod (33) through the fixing groove B (19), the positive electrode plate (21) is slidably connected to the mounting plate A (18), the surface of the positive electrode plate (21) is fixedly installed with a locking block A (22), and the locking block A (22) is slidably connected to the mounting plate A (18) through the locking groove A (20).

4. The all-vanadium redox flow battery device with an anti-fouling diaphragm according to claim 1, characterized in that: The mounting plate B (23) is slidably connected to the mounting rod (33) through the fixing groove C (24), the negative electrode plate (26) is slidably connected to the mounting plate B (23), the surface of the negative electrode plate (26) is fixedly mounted with a locking block B (27), the locking block B (27) is slidably connected to the mounting plate B (23) through the locking groove B (25), and the bipolar plate (28) is slidably connected to the mounting rod (33) through the fixing groove D (29).

5. The all-vanadium redox flow battery device with an anti-fouling diaphragm according to claim 1, characterized in that: The fixing plate (30) is slidably connected to the mounting rod (33) through the mounting groove (32), the lead screw (35) is slidably connected to the fixing plate (30) through the mounting groove (32), the rotating block (34) is slidably connected to the fixing plate (30) through the storage groove (31), the nut (36) is rotatably connected to the lead screw (35), the top of the fixing plate (30) is provided with a lifting groove (37), and a lifting rod (38) is provided inside the lifting groove (37).

6. The all-vanadium redox flow battery device with an anti-fouling diaphragm according to claim 1, characterized in that: A sealing gasket A (39) is fixedly installed on the surface of the box body (1), a sealing plate (41) is fixedly installed at the bottom of the cover plate (7), a sealing gasket B (42) is fixedly installed at the bottom of the sealing plate (41), a fixing block (44) is fixedly installed on the side of the box body (1), a threaded rod (46) is provided inside the fixing block (44), and a throttle (47) is fixedly installed on the right side of the threaded rod (46).

7. The all-vanadium redox flow battery device with an anti-fouling diaphragm according to claim 6, characterized in that: The cover plate (7) is slidably connected to the sealing gasket A (39), the sealing plate (41) is slidably connected to the box body (1) through the sealing groove (40), the sealing gasket B (42) is slidably connected to the box body (1) through the sealing groove (40), the threaded rod (46) is rotatably connected to the sealing plate (41) through the positioning groove (43), and the threaded rod (46) is rotatably connected to the fixing block (44) through the threaded groove (45).

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