A coil-type liquid accumulation plate integration device for an all-vanadium redox flow battery stack

Abstract

This invention relates to the field of vanadium redox flow battery stack integration, specifically disclosing an integrated device for the coil and liquid collection tray of a vanadium redox flow battery stack. This device solves the problems of poor integration and large size in existing vanadium redox flow battery stacks. The proposed solution includes a support frame, a battery stack, a lifting frame, a coil box, a coil, a liquid collection tray, a sleeve block, a drive assembly, and a swing plate. The sleeve block is equipped with a swing assembly, which, when the sleeve blocks on both sides approach each other, drives the swing plate to rotate, first approaching and then moving away from the coil box, to center and align the coil box. The support frame has sliding locking blocks on both sides, and a linkage assembly is provided on the support frame. This linkage assembly, when the sleeve blocks on both sides approach each other, drives the locking blocks to insert and position the coil box. This device can integrate the coil of a vanadium redox flow battery stack, effectively reducing its size, enabling faster liquid collection, and providing more convenient, efficient, and stable installation.

Description

Technical Field

[0001] This invention relates to the field of vanadium redox flow battery stack integration, and in particular to a coil-accumulation plate integration device for a vanadium redox flow battery stack. Background Technology

[0002] In a vanadium redox flow battery stack, the coil refers to the serpentine / spiral pipe buried at the bottom of the stack or inside the electrolyte accumulator for carrying coolant / heat transfer fluid. The bypass current between vanadium redox flow battery stacks refers to the internal circulating current formed within or between stacks, where the current does not perform work through the electrochemical reaction path inside the stack, but rather through the ion-conducting pathway formed by the electrolyte piping. Essentially, it is a form of self-discharge loss.

[0003] A coiled electrolyte flow channel / connecting pipeline is employed, and electrolyte ion pathway resistance is controlled through fluid channel geometry reconstruction, thereby suppressing bypass current and improving stack performance. Main features include:

[0004] Increasing the resistance of the electrolyte ion pathway directly weakens the bypass current driving strength;

[0005] Disrupts the low-resistivity continuous ion circuit and blocks the bypass current path across a single cell.

[0006] Reduce internal Joule heating and side reaction losses, and improve coulombic efficiency and energy efficiency;

[0007] Improving the uniformity of electrolyte distribution indirectly suppresses the non-uniform distribution of bypass current;

[0008] While coils are a necessary condition, they are typically positioned directly above and below the fuel cell stack. However, existing coils are generally exposed and arranged above and below the stack, resulting in a complex and space-consuming configuration that leads to a large overall size of the integrated device. Furthermore, installation is cumbersome, and electrolyte leakage is prone to occur at the bottom of the stack and at the connection points with the coils. Therefore, a coil-liquid accumulation tray integration device for a vanadium redox flow battery stack is proposed. Summary of the Invention

[0009] To overcome the shortcomings of the prior art, this invention proposes an integrated device for the coil and electrolyte accumulation plate of a vanadium redox flow battery stack. This device can integrate the coil and electrolyte accumulation structure on the coil box, effectively reducing the size of the integrated device and effectively absorbing electrolyte leakage, thus preventing corrosion of other pipelines and components.

[0010] To solve the above-mentioned technical problems, the basic technical solution proposed by this invention is as follows: A coil-and-collector integrated device for a vanadium redox flow battery stack includes a support frame with two stacks mounted on both sides of the support frame. Each stack has a lifting frame below it, and a coil box is mounted on the lifting frame below the stack. The coil box contains coiled tubing, and a collection tray is provided on the upper surface of the coil box. Sleeves are slidably mounted on both the front and rear ends of the support frame. A drive assembly is provided on the support frame to drive the sleeves at both ends to move closer or further apart. The lower ends of the front and rear sides of the bracket are rotatably connected to swing plates. The sleeve block is provided with a swing component. The swing component is used to drive the swing plate to rotate closer to and then further away from the coil box when the two sleeve blocks approach each other, so as to center and straighten the coil box. The bracket is slidably provided with locking blocks on both sides. The bracket is provided with a linkage component. The linkage component is used to drive the locking blocks to insert and position the coil box when the two sleeve blocks approach each other.

[0011] Preferably, the drive assembly includes a frame and a bidirectional lead screw. The frame is installed on the front and rear sides of the bracket. The two ends of the bidirectional lead screw are respectively rotatably fitted through both sides of the frame, and the threads on the outer sides of the bidirectional lead screw have opposite directions. The sleeves at both ends are respectively threaded onto the outer sides of the bidirectional lead screw. A support frame is centrally installed on the bracket, and supports are installed on the brackets on both sides of the support frame. Hanging rods are connected to both sides of the lower end of the supports. The hanging frames are installed in pairs on the hanging rods on both sides below the supports and are arranged parallel to each other.

[0012] Preferably, the fuel cell stack is equipped with multiple interfaces, and the coil box is also provided with a through-hole for the coil to pass through. The threads at both ends of the outer side of the bidirectional lead screw are arranged in opposite directions, and the sleeve blocks on both sides are symmetrically threaded onto both ends of the outer side of the bidirectional lead screw.

[0013] Preferably, the swing assembly includes a sliding plate, a rotating shaft, a gear, and a rack. The sliding plates are arranged in pairs and are slidably disposed at the front and rear ends of the support. The rotating shaft is rotatably mounted on the lower end face of the front and rear sides of the support. The upper end of the swing plate is connected to the rotating shaft. The gear is fitted on the outside of each rotating shaft. The rack is correspondingly disposed on one side above each rotating shaft and slidably connected to the support. The rack meshes with the front and rear gears on the close side. The upper end of the sliding plate is connected to a vertical plate. The sleeve block is rotatably connected to the vertical plate by a rotating plate. The upper end of the rack is rotatably connected to the sliding plate by a rotating plate.

[0014] Preferably, the front and rear frames are each connected to a sleeve frame on the side away from each other. The slide plate is slidably fitted into the sleeve frame on its respective side. The bracket is equipped with mounting seats on both the front and rear sides. The rotating shaft is rotatably mounted on the mounting seat. Each of the front and rear sides of the bracket is rotatably equipped with two left and right rotating shafts. Each rotating shaft has a swing plate connected to both ends of its outer side. The rack is connected to two sides of a slide rod frame. The bracket is connected to a sleeve on both the front and rear sides. The slide rod frame is slidably fitted into the sleeve on its respective side and slides through its upper and lower sides.

[0015] Preferably, the linkage component includes a slot, a pressure plate, a sliding frame, a sliding seat, a top seat, a slide rail, and a top block. The slot is provided on both sides of the coil box and the hanging frame that are close to each other, and it penetrates the hanging frame. The pressure plate is slidably disposed in the support frame and penetrates the front and rear sides of the support frame. A rotating plate three is rotatably connected between the lower end face of the pressure plate and the slots on both sides. The slots on both sides that are far apart from each other penetrate the slots on the hanging frame and are inserted into the slots on the coil box. The sliding frame is connected to the front and rear sides of the bracket. The sliding seats are symmetrically slidably disposed on both sides of the sliding frame. A rotating plate four is rotatably connected between each sliding seat and the pressure plate. The top seat is connected to the upper end of the sliding seat. The slide rail is provided on the lower end face of the frame. The top block is connected to the lower end of the sleeve block and slides through the slide rail to the lower side of the frame. The surfaces of the top blocks on both sides that are close to each other abut against the surfaces of the top seats on both sides that are far apart from each other.

[0016] Preferably, an installation plate is installed on the lower inner wall of the support frame, and guide rods are connected to both sides of the installation plate. Slide plates are slidably sleeved on the guide rods on both sides. The locking blocks on both sides are connected to the sides of the slide plates that are far apart from each other. The end of the rotating plate three that is far away from the pressure plate is rotatably connected to the slide plate two. A sliding rod located on the front and rear sides of the slide plate two is connected between the upper and lower inner walls of the support frame. The pressure plate is slidably sleeved on the outside of the sliding rod, and a spring sleeved on the outside of the sliding rod is connected between the lower end face of the pressure plate and the lower inner wall of the support frame.

[0017] Preferably, elastic rollers are rotatably mounted on both sides of the hanging frame, which are far apart from each other. A liquid accumulation film is wound on the elastic roller, and a traction plate is connected to the other end of the liquid accumulation film. A telescopic rod is installed between the traction plate and the hanging frame. An abutting component is provided between the front and rear sliding plates. The abutting component is used to abut against the liquid accumulation film, causing it to deform in a concave shape.

[0018] Preferably, the contact assembly includes a connecting frame and a pressure seat. The connecting frame is connected to a slide plate and is arranged around the outside of the two fuel cells. The connecting frames on the front and rear sides are rotatably connected to rotating plates five on their respective close sides. The front and rear sides of the pressure seat are rotatably connected to the lower ends of the rotating plates five on the front and rear sides away from their respective connecting frames. The lower end of the pressure seat is connected to a pressure rod that abuts against the upper surface of the liquid accumulation film.

[0019] Preferably, storage boxes are installed on both sides of the hanging frame away from each other, and the elastic rollers on both sides are rotatably installed on the front and rear inner walls of the storage boxes via spiral hinges. The traction plate is located on the outside of the storage box, and the end of the liquid film away from the elastic roller extends through the storage box to its outside and connects with the traction plate.

[0020] The beneficial effects of this invention are: The technical solution of this invention integrates the coils into a coil box and leads them out through a through-hole in the coil box for easy connection and installation with the interface on the fuel cell stack. A dedicated bracket is used to install the fuel cell stack and coil box in pairs, improving the integration and effectively reducing the equipment size. Furthermore, after the coil box is installed on the hanging frame and the fuel cell stack is installed on the support, the bidirectional lead screw inside the frame can be rotated, causing the two side sleeves to move closer together. During this process, a rotating plate drives a sliding plate to first slide away from the frame and bracket, and then slide closer to the frame and bracket. Under the action of the rotating plate, the sliding rod frame and the rack move down first and then up. The downward stroke of the rack is less than the upward stroke. Through meshing, the rotating shaft rotates, so that the swing plates on the front and rear rotating shafts can first move closer to each other and then move further apart. When they move closer to each other, the end of the swing plate away from the rotating shaft can engage with the front and rear sides of the coil box. With the cooperation of the front and rear swing plates, the coil box is precisely centered and limited. Then, it moves further apart, which makes it easy to center and straighten the front and rear position of the coil box and improves the installation efficiency. 2. The technical solution of the present invention, through the process of rotating the bidirectional screw to drive the two sleeve blocks to approach each other, the sliding of the two sleeve blocks to approach each other can be divided into two strokes. One is to drive the rack to move down, and then to drive the rack to move up. During the upward stroke of the rack, the top block connected to the lower end of the two sleeve blocks and sliding through the slide will abut against the top seat on the two slide blocks, which can push the rotating plate four to rotate, thereby driving the pressure plate to move down in the support frame, so as to drive the rotating plate three connected to the lower end of the pressure plate to rotate, and drive the two sliding plates two and the locking blocks to move away from each other, respectively, and cooperate with the locking slots opened on the two coil boxes to limit the coil boxes on both sides. This allows the coil boxes to be stably installed on the hanging frame without other structures, and the fuel cell stack can be quickly installed on the support by bolts, further improving the installation efficiency and stability. 3. The technical solution of this invention divides the sliding of the sleeve blocks into two strokes: one stroke drives the rack to move downwards, and the other stroke drives the rack to move upwards. The upward stroke of the rack is greater than the downward stroke, and the stroke of the two sliding plates moving closer together is greater than the stroke of the two sliding plates moving further apart. This means that when the two sliding plates move closer together, which is the second stroke of the two sleeve blocks moving closer together, the connecting frames on the front and rear sides can move closer together. This pushes the pressure seat and pressure rod to move downwards a greater distance than they move upwards. As a result, the pressure rod, which was not originally in contact with the liquid accumulation film, can make the lower end of the pressure rod contact the liquid accumulation film through the difference in the strokes of the upward and downward movements. This causes the middle of the liquid accumulation film to be concave downwards, so as to receive electrolyte leakage that may occur at the connection between the side of the fuel cell stack and the coil. The leakage that may occur at the bottom of the fuel cell stack can be received by the liquid accumulation plate, achieving effective reception of electrolyte leakage. It also has higher integration, smaller size, and is more convenient and stable to install. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the front structure of the present invention; Figure 3 This is a schematic diagram of the structure of the non-electric stack and coil box of the present invention; Figure 4 This is a schematic diagram of the structure of the supportless assembly, fuel cell stack, and coil box of the present invention; Figure 5 This is a bottom view of the frame and related structures within the support frame of the present invention; Figure 6 This is a schematic diagram of the relevant structures on the frame of the present invention; Figure 7 This is a bottom view of the structure of the fuel cell stack and coil box of the present invention; Figure 8 This is a schematic diagram showing the installation positions of the fuel cell stack, coil box, and support of the present invention. Figure 9 This is a schematic diagram of the mounting structure of the support frame of the present invention with multiple rows and columns, and the fuel cell stack and coil box. Figure 10 This is a schematic diagram of the internal structure of the coil box of the present invention.

[0022] Explanation of reference numerals in the attached figures: 1. Bracket; 2. Support; 3. Support frame; 4. Hanger rod; 5. Hanger frame; 6. Fuel cell stack; 7. Coil box; 8. Coil; 9. Liquid collection tray; 10. Interface; 11. Through-hole; 12. Slot; 13. Frame; 14. Double-acting screw; 15. Sleeve block; 16. Sleeve frame; 17. Slide plate one; 18. Vertical plate; 19. Rotating plate one; 20. Mounting base; 21. Rotating shaft; 22. Swing plate; 23. Gear; 24. Sleeve base; 25. Slide rod bracket; 26. Rack; 27. Rotating plate two; 28. Mounting plate; 29. ​​Guide rod; 30. Slide plate two; 31. Locking block; 32. Slide rod; 33. Pressure plate; 34. Spring; 35. Rotating plate three; 36. Slide frame; 37. Slide seat; 38. Rotating plate four; 39. Top seat; 40. Slide track; 41. Top block; 42. Storage box; 43. Elastic roller; 44. Telescopic rod; 45. Traction plate; 46. Liquid accumulation film; 47. Connecting frame; 48. Rotating plate five; 49. Pressure seat; 50. Pressure rod. Detailed Implementation

[0023] The following will be combined with the appendix Figure 1 To be continued Figure 10 The technical solutions in the embodiments of the present invention have been clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1:

[0025] like Figures 1-10 As shown, the present invention discloses an integrated device for a coil-and-liquid collection tray of a vanadium redox flow battery stack, including a support 1. Two stacks 6 are mounted on both sides of the support 1. Each stack 6 is provided with a hanging frame 5 below it. A coil box 7 is mounted on the hanging frame 5 below the stack 6. A coil 8 is wound and stored inside the coil box 7. A collection tray 9 is provided on the upper end face of the coil box 7. Sleeve blocks 15 are slidably provided at both ends of the support 1. A driving component is provided on the support 1. The driving component is used to drive the sleeve blocks 15 at both ends to move closer or further apart. The lower ends of the front and rear sides of the bracket 1 are rotatably connected to swing plates 22. The sleeve block 15 is provided with a swing component. The swing component is used to drive the swing plate 22 to rotate closer to and then further away from the coil box 7 when the two sleeve blocks 15 approach each other, so as to center and straighten the coil box 7. The bracket 1 is slidably provided with locking blocks 31 on both sides. The bracket 1 is provided with a linkage component. The linkage component is used to drive the locking blocks 31 to insert and position the coil box 7 when the two sleeve blocks 15 approach each other.

[0026] Among them, fuel cell stack 6 uses existing mature equipment.

[0027] Multiple interfaces 10 are installed on the fuel cell stack 6, and the coil box 7 is also provided with a through hole 11 for the coil 8 to pass through. The threads at both ends of the outer side of the bidirectional lead screw 14 are set in opposite directions, and the sleeve blocks 15 on both sides are symmetrically threaded on both ends of the outer side of the bidirectional lead screw 14.

[0028] The convenient connection between the fuel cell stack 6 and the coil 8 via the interface 10, and the opposite rotation of the threads on the outer sides of the two ends of the bidirectional lead screw 14, ensures that the sleeves 15 on both sides move closer or further apart synchronously when rotating in both directions.

[0029] Example 2:

[0030] like Figures 1-10 As shown, the present invention discloses a coil-cumulant tray integrated device for a vanadium redox flow battery stack. Compared with Embodiment 1, this embodiment discloses the structure of the drive component and the swing component.

[0031] The drive assembly includes a frame 13 and a bidirectional lead screw 14. The frame 13 is installed on the front and rear sides of the bracket 1. The two ends of the bidirectional lead screw 14 are respectively rotated and fitted on both sides of the frame 13. The threads on the outer sides of the bidirectional lead screw 14 are opposite. The sleeves 15 at both ends are respectively threaded onto the outer sides of the bidirectional lead screw 14. A support frame 3 is installed in the center of the bracket 1. Supports 2 are installed on the brackets 1 on both sides of the support frame 3. The lower ends of the supports 2 are connected to the hanging rods 4 on both sides. The hanging frames 5 are installed in pairs on the hanging rods 4 on both sides below the supports 2 and are arranged parallel to each other.

[0032] This allows the bidirectional lead screw 14 to rotate in both directions, causing the two side sleeves 15 to move closer or further apart. The two pairs of fuel cell stacks 6 can be attached to the support frame 3 on the side that is closer together, and to the support 2 on the side that is further apart. The coil box 7 is installed between two adjacent hanging frames 5 on both sides. In the actual installation, the coil box 7 is placed first, and then the fuel cell stack 6 is installed and installed on the support 2 with bolts.

[0033] The swing assembly includes a sliding plate 17, a rotating shaft 21, a gear 23, and a rack 26. The sliding plates 17 are in pairs and are slidably mounted on the front and rear ends of the support 1. The rotating shaft 21 is rotatably mounted on the lower end face of the front and rear sides of the support 1. The upper end of the swing plate 22 is connected to the rotating shaft 21. The gear 23 is fitted on the outside of each rotating shaft 21. The rack 26 is correspondingly mounted on the upper side of each rotating shaft 21 and is slidably connected to the support 1. The rack 26 and the front and rear gears 23 mesh with each other on the close side. The upper end of the sliding plate 17 is connected to a vertical plate 18. The sleeve block 15 is rotatably connected to the vertical plate 18 by a rotating plate 19. The upper end of the rack 26 is rotatably connected to the sliding plate 17 by a rotating plate 27.

[0034] The front and rear frames 13 are connected to the sleeves 16 on opposite sides. The slide plate 17 is slidably fitted into the sleeves 16 on its respective side. The bracket 1 is equipped with mounting seats 20 on both the front and rear sides. The rotating shaft 21 is rotatably mounted on the mounting seat 20. Each side of the bracket 1 is rotatably equipped with two left and right rotating shafts 21. The two ends of the outer side of each rotating shaft 21 are connected to swing plates 22. The rack 26 is connected to the two sides of the slide rod frame 25. The front and rear sides of the bracket 1 are connected to the sleeves 24. The slide rod frame 25 is slidably fitted into the sleeves 24 on its respective side and slides through its upper and lower sides.

[0035] This configuration ensures that when the slide plate 17 is driven to slide, it can move stably on the sleeve 16. The swing plate 22 can be stably rotated and mounted on the lower side of the bracket 1 through the rotating shaft 21 and the mounting base 20. When the rack 26 slides up and down, the stability of the rack 26 is improved by the sliding sleeve 25 and the sleeve 24, and the stable meshing with the gear 23 is ensured. The vertical plate 18 is set to ensure that it is higher than the upper end of the rack 26, so as to ensure that the rack 26 is stably pulled by the rotating plate 27, so as to realize the up and down movement of the rack 26.

[0036] In actual installation and use, the coil 8 is integrated and stored in the coil box 7 and led out through the through hole 11 on the coil box 7 to facilitate connection and installation with the interface 10 on the fuel cell stack 6. At the same time, a special bracket 1 is set to install the fuel cell stack 6 and the coil box 7 in pairs, which improves the installation integration and effectively reduces the size of the equipment. As can be seen from the attached diagram in the instruction manual, there is a certain gap between the slide plate 17 and the inner wall of the frame 16 near the frame 13. Therefore, when the two sleeve blocks 15 approach each other, the rotating plate 19 will first drive the two slide plates 17 away from the bracket 1 and the frame 13 to slide. As the two sleeve blocks 15 continue to approach each other, they will drive the rotating plate 19 to pull the two slide plates 17 closer to the frame 13 and the bracket 1 to slide. The distance that the slide plate 17 slides closer to the frame 13 and the bracket 1 is greater than the distance that it slides away from the frame 13 and the bracket 1. Furthermore, after the coil box 7 is installed on the hanging frame 5 and the fuel cell stack 6 is installed on the support 2, the bidirectional lead screw 14 inside the frame 13 can be rotated, thereby driving the two side sleeves 15 to move closer to each other. During this process, the rotating plate 19 drives the sliding plate 17 to first move away from the frame 13 and the support 1, and then move closer to the frame 13 and the support 1. The distance of the movement away from the frame 13 and the support 1 is less than the distance of the movement closer to the frame 13 and the support 1. Then, under the action of the rotating plate 27, the sliding rod frame 25 and the rack 26 move down first and then up, and the rack 26 moves down. The stroke is less than the upward stroke, and through the meshing of the rack 26 and the gear 23, the rotating shaft 21 is driven to rotate, so that the swing plates 22 on the front and rear rotating shafts 21 can first move closer to each other and then move away from each other. When they move closer to each other, the end of the swing plate 22 away from the rotating shaft 21 can cooperate and abut against the front and rear sides of the coil box 7. With the cooperation of the front and rear swing plates 22, the coil box 7 is precisely centered and limited, and then moves away from each other, so as to facilitate the centering and straightening of the front and rear position of the coil box 7 and improve the installation efficiency.

[0037] Example 3:

[0038] like Figures 1-10 As shown, this invention discloses an integrated device for a coil-type liquid accumulation plate of a vanadium redox flow battery stack. Compared with Embodiment 2, this embodiment discloses the structure of the linkage component.

[0039] The linkage assembly includes a slot 12, a pressure plate 33, a sliding frame 36, a sliding base 37, a top base 39, a slide rail 40, and a top block 41. The slot 12 is located on both sides of the coil box 7 and the hanging frame 5, close to each other, and extends through the hanging frame 5. The pressure plate 33 is slidably disposed within the support frame 3, extending through the front and rear sides of the support frame 3. A rotating plate 35 is rotatably connected between the lower end face of the pressure plate 33 and the two side slots 31. The two side slots 31, on their opposite sides, extend through the slot 12 on the hanging frame 5 and connect with the slots on the coil box 7. The card slot 12 is inserted and the slide frame 36 is connected to the front and rear sides of the bracket 1. The slide base 37 is symmetrically slidably arranged on both sides of the slide frame 36. Each slide base 37 is rotatably connected to the pressure plate 33 by a rotating plate 48. The top seat 39 is connected to the upper end of the slide base 37. The slide rail 40 is opened on the lower end face of the frame 13. The top block 41 is connected to the lower end of the sleeve block 15 and slides through the slide rail 40 to extend to the lower side of the frame 13. The surfaces of the top blocks 41 on both sides that are close to each other and the surfaces of the top seats 39 on both sides that are far away from each other cooperate and abut.

[0040] This allows the sliding motion of the two sleeve blocks 15 towards each other during the rotation of the bidirectional lead screw 14. The sliding motion of the two sleeve blocks 15 towards each other can be divided into two strokes: one is to drive the rack 26 downward, and the other is to drive the rack 26 upward. During the upward stroke of the rack 26, the top block 41 connected to the lower end of the two sleeve blocks 15 and sliding through the slide rail 40 will abut against the top seat 39 on the two slide seats 37, thereby driving the two slide seats 37 towards each other and pushing the rotating plate 48 to rotate. This will drive the pressure plate 33 to move downward within the support frame 3, thereby driving the rotating plate 35 connected to the lower end of the pressure plate 33 to rotate. This will also drive the two sliding plates 2 30 and the locking block 31 to move away from each other, and cooperate with the locking slots 12 opened on the sides of the two coil boxes 7 that are close to each other to limit the movement of the two coil boxes 7. This allows the coil boxes 7 to be stably installed on the hanging frame 5 without the need for other structures, while the fuel cell stack 6 can be quickly installed on the support 2 with bolts, further improving the efficiency and stability of the installation.

[0041] A mounting plate 28 is installed on the lower inner wall of the support frame 3. Guide rods 29 are connected to both sides of the mounting plate 28. Slide plates 30 are slidably fitted on both guide rods 29. The locking blocks 31 on both sides are connected to the sides of the slide plates 30 that are far apart from each other. The end of the rotating plate 35 that is far away from the pressure plate 33 is rotatably connected to the slide plate 30. A sliding rod 32 located on the front and rear sides of the slide plate 30 is connected between the upper and lower inner walls of the support frame 3. The pressure plate 33 is slidably fitted on the outside of the sliding rod 32. A spring 34 fitted on the outside of the sliding rod 32 is connected between the lower end face of the pressure plate 33 and the lower inner wall of the support frame 3. This arrangement allows the slide plates 30 and the locking blocks 31 on both sides to slide more stably by sliding with the guide rods 29. At the same time, the pressure plate 33 also slides more stably by sliding with the sliding rod 32. Under the action of the spring 34, the pressure plate 33 can move up to cooperate and abut against the upper inner wall of the support frame 3 without external force.

[0042] Example 4:

[0043] like Figures 1-10 As shown, this invention discloses a coil-cumulant tray integrated device for a vanadium redox flow battery stack. Compared with Embodiment 3, this embodiment discloses the structure of the contact component.

[0044] Both sides of the hanging frame 5 are rotatably mounted with elastic drums 43, which are far apart from each other. A liquid accumulation film 46 is wound on the elastic drum 43, and the other end of the liquid accumulation film 46 is connected to a traction plate 45. A telescopic rod 44 is installed between the traction plate 45 and the hanging frame 5. An abutting component is provided between the front and rear sliding plates 17. The abutting component is used to abut against the liquid accumulation film 46, causing it to be concave and deformed.

[0045] The contact assembly includes a connecting frame 47 and a pressure seat 49. The connecting frame 47 is connected to the slide plate 17 and is arranged around the outside of the two fuel cell stacks 6. The connecting frames 47 on the front and rear sides are rotatably connected to rotating plates 58 on the sides close to each other. The front and rear sides of the pressure seat 49 are rotatably connected to the lower ends of the rotating plates 58 on the front and rear sides away from their respective connecting frames 47. The lower end of the pressure seat 49 is connected to a pressure rod 50 that abuts against the upper surface of the liquid accumulation film 46.

[0046] This causes the sliding of the sleeve blocks 15 closer together to be divided into two strokes: one that drives the rack 26 downward and the other that drives it upward. The upward stroke of the rack 26 is greater than the downward stroke. Therefore, when the two sliding plates 17 move away from each other, they can pull the two connecting frames 47 away from each other and cause the rotating plate 48 to rotate, which in turn causes the pressure seat 49 and pressure rod 50 to move upward. Since the stroke of the two sliding plates 17 moving closer together is greater than the stroke of the two sliding plates 17 moving away from each other, this is the second stroke of the sliding of the two sleeve blocks 15 moving closer together. This allows the connecting frames 47 on the front and rear sides to move closer together, thereby pushing the pressure seat 49 and the pressure rod 50 to move downward a greater distance than they move upward. As a result, the pressure rod 50, which was not originally in contact with the liquid accumulation film 46, will now come into contact with the liquid accumulation film 46 through the difference in stroke between the upward and downward movements. This will cause the middle of the liquid accumulation film 46 to be recessed downward, so as to receive any electrolyte leakage that may occur at the connection between the side of the fuel cell stack 6 and the coil 8. Any leakage that may occur at the bottom of the fuel cell stack 6 can be received by the liquid accumulation pan 9, thus achieving effective reception of electrolyte leakage. This design is more integrated, smaller in size, and easier and more stable to install.

[0047] Storage boxes 42 are installed on both sides of the hanging frame 5, which are far apart from each other. The elastic rollers 43 on both sides are rotatably installed on the front and rear inner walls of the storage box 42 through the spiral hinge. The traction plate 45 is located on the outside of the storage box 42, and the end of the liquid accumulation film 46 away from the elastic roller 43 extends through the storage box 42 to its outside and connects with the traction plate 45. This makes it more convenient to compress the telescopic rod 44 to drive the liquid accumulation film 46 into the storage box 42 when not in use, and then roll it back onto the elastic roller 43.

[0048] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A coil liquid-collecting disc integrated device of a vanadium flow battery stack, comprising a bracket (1), two groups of stacks (6) are installed on both sides of the bracket (1), characterized in that, Each of the fuel cell stacks (6) is provided with a hanging frame (5) below it. A coil box (7) is installed on the hanging frame (5) below the fuel cell stack (6). A coil (8) is wound and stored inside the coil box (7). A liquid collection tray (9) is provided on the upper end face of the coil box (7). Sleeve blocks (15) are slidably provided at both ends of the support (1). A drive assembly is provided on the support (1). The drive assembly is used to drive the sleeve blocks (15) at both ends to move closer or further apart. The drive assembly includes a frame (13) and a two-way lead screw (14). The frame (13) is installed on the front and rear sides of the bracket (1). The two-way lead screw (14) is rotated through both ends and mounted on both sides of the frame (13). The threads on the outer sides of the two-way lead screw (14) are opposite. The sleeves (15) at both ends are threaded onto the outer sides of the two-way lead screw (14). A support frame (3) is installed in the center of the bracket (1). Supports (2) are installed on the brackets (1) on both sides of the support frame (3). Hanging rods (4) are connected to both sides of the lower end of the support (2). The hanging frames (5) are installed in pairs on the hanging rods (4) on both sides below the support (2) and are arranged parallel to each other. The lower ends of the front and rear sides of the bracket (1) are rotatably connected to swing plates (22). The sleeve block (15) is provided with a swing component. The swing component is used to drive the swing plate (22) to rotate closer to and then further away from the coil box (7) when the two sleeve blocks (15) approach each other, so as to center and straighten the coil box (7). The bracket (1) is slidably provided with locking blocks (31) on both sides. The bracket (1) is provided with a linkage component. The linkage component is used to drive the locking blocks (31) to insert and position the coil box (7) when the two sleeve blocks (15) approach each other. The swing assembly includes a sliding plate (17), a rotating shaft (21), a gear (23), and a rack (26). The sliding plates (17) are in pairs and are slidably disposed at the front and rear ends of the support (1). The rotating shaft (21) is rotatably mounted on the lower end face of the front and rear sides of the support (1). The upper end of the swing plate (22) is connected to the rotating shaft (21). The gear (23) is fitted on the outside of each rotating shaft (21). The rack (26) is correspondingly disposed on the upper side of each rotating shaft (21) and is slidably connected to the support (1). The rack (26) and the front and rear gears (23) mesh close to each other. The upper end of the sliding plate (17) is connected to a vertical plate (18). The sleeve block (15) is rotatably connected to the vertical plate (18) by a rotating plate (19). The upper end of the rack (26) is rotatably connected to the sliding plate (17) by a rotating plate (27).

2. The integrated device of claim 1, wherein, The fuel cell stack (6) is equipped with multiple interfaces (10), and the coil box (7) is also provided with a through hole (11) for the coil (8) to pass through. The threads at both ends of the outer side of the bidirectional lead screw (14) are set in opposite directions, and the sleeve blocks (15) on both sides are symmetrically threaded on both ends of the outer side of the bidirectional lead screw (14).

3. The integrated device of claim 1, wherein, The front and rear frames (13) are connected to a sleeve frame (16) on the side away from each other. The slide plate (17) is slidably fitted in the sleeve frame (16) on its respective side. The bracket (1) is equipped with a mounting seat (20) on both the front and rear sides. The rotating shaft (21) is rotatably installed on the mounting seat (20). The bracket (1) is rotatably installed with two left and right rotating shafts (21) on each side. The two ends of the outer side of each rotating shaft (21) are connected to a swing plate (22). The rack (26) is connected to a slide rod frame (25) on both sides. The bracket (1) is connected to a sleeve seat (24) on both the front and rear sides. The slide rod frame (25) is slidably fitted in the sleeve seat (24) on its respective side and slides through its upper and lower sides.

4. The integrated device of claim 1, wherein, The linkage assembly includes a slot (12), a pressure plate (33), a sliding frame (36), a sliding seat (37), a top seat (39), a slide rail (40), and a top block (41). The slot (12) is provided on both sides of the coil box (7) and the hanging frame (5) that are close to each other, and it penetrates the hanging frame (5). The pressure plate (33) is slidably disposed in the support frame (3) and penetrates the front and rear sides of the support frame (3). The lower end face of the pressure plate (33) is rotatably connected to the two side slots (31) by a rotating plate three (35). The two side slots (31) that are far apart from each other penetrate the slots (12) on the hanging frame (5) and are connected to the coil box (7). The card slot (12) is inserted in cooperation. The sliding frame (36) is connected to the front and rear sides of the bracket (1). The sliding seat (37) is symmetrically slidably arranged on both sides of the sliding frame (36). Each sliding seat (37) is rotatably connected to the pressure plate (33) by a rotating plate (38). The top seat (39) is connected to the upper end of the sliding seat (37). The slide (40) is opened on the lower end face of the frame (13). The top block (41) is connected to the lower end of the sleeve block (15) and slides through the slide (40) to extend to the lower side of the frame (13). The top blocks (41) on both sides are close to each other and the top seats (39) on both sides are far away from each other.

5. The integrated device of claim 4, wherein, The support frame (3) has an installation plate (28) installed on its lower inner wall. The installation plate (28) has guide rods (29) connected to both sides. The guide rods (29) on both sides are slidably fitted with slide plates (30). The locking blocks (31) on both sides are connected to the sides of the slide plates (30) that are far apart from each other. The end of the rotating plate (35) that is far away from the pressure plate (33) is rotatably connected to the slide plates (30). The upper and lower inner walls of the support frame (3) are connected with slide rods (32) located on the front and rear sides of the slide plates (30). The pressure plate (33) is slidably fitted on the outside of the slide rods (32). The lower end face of the pressure plate (33) is connected to the lower inner wall of the support frame (3) with a spring (34) fitted on the outside of the slide rods (32).

6. The integrated device of claim 1, wherein, Both sides of the hanging frame (5) are rotatably mounted with elastic rollers (43) that are far apart from each other. A liquid accumulation film (46) is wound on the elastic roller (43), and the other end of the liquid accumulation film (46) is connected to a traction plate (45). A telescopic rod (44) is installed between the traction plate (45) and the hanging frame (5). An abutting component is provided between the front and rear sliding plates (17). The abutting component is used to abut against the liquid accumulation film (46) to make it concave and deform.

7. The integrated device of claim 6, wherein, The contact assembly includes a connecting frame (47) and a pressure seat (49). The connecting frame (47) is connected to the slide plate (17) and is arranged around the outside of the two fuel cell stacks (6). The connecting frames (47) on the front and rear sides are rotatably connected to the rotating plates (48) on the sides close to each other. The front and rear sides of the pressure seat (49) are rotatably connected to the lower ends of the rotating plates (48) on the front and rear sides away from their respective connecting frames (47). The lower end of the pressure seat (49) is connected to a pressure rod (50) that abuts against the upper surface of the liquid accumulation film (46).

8. The integrated device of claim 7, wherein, The two hanging frames (5) on both sides are equipped with storage boxes (42) on opposite sides. The elastic rollers (43) on both sides are rotatably installed on the front and rear inner walls of the storage box (42) through spiral hinges. The traction plate (45) is located outside the storage box (42), and the end of the liquid film (46) away from the elastic roller (43) extends through the storage box (42) to its outside and connects with the traction plate (45).

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