A fuel cell bipolar plate flow field cleaning tool

Abstract

This utility model discloses a fuel cell bipolar plate flow field cleaning tool, belonging to the field of battery technology. It includes a receiving cavity, inside which a support column is fixedly connected. A take-up reel is rotatably connected to the outer wall of the support column, and a connecting hose is fixedly connected inside the take-up reel. An outlet is formed on the front surface of the receiving cavity. One end of the connecting hose, away from the take-up reel, extends to the outside of the receiving cavity and is fixedly connected to a water outlet. The water outlet of this cleaning tool can flexibly extend into the flow field of the fuel cell bipolar plate. Through its unique water pressure-driven water outlet structure, it ensures that the water flow accurately covers every corner of the flow field, effectively removing residual impurities, catalyst particles, and other contaminants, achieving thorough cleaning without dead angles, significantly improving the cleaning effect, ensuring smooth gas flow and efficient electrochemical reactions in the fuel cell, thereby extending the service life of the bipolar plate and improving the overall performance of the fuel cell.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell technology, and in particular to a fuel cell bipolar plate flow field cleaning tool. Background Technology

[0002] With the widespread application of fuel cell technology in the new energy field, the cleaning and maintenance of the bipolar plate flow field has become a crucial aspect of ensuring battery performance and lifespan. Traditional bipolar plate flow field cleaning methods often involve manual disassembly followed by rinsing and wiping. This method is not only time-consuming and labor-intensive, but also prone to damaging the delicate structure of the bipolar plates during disassembly, affecting their sealing performance and conductivity. While some automated cleaning equipment can reduce manual operation, its complex structure and large size make it difficult to adapt to different bipolar plate flow fields. It also creates cleaning dead zones and cannot effectively clean narrow and tortuous flow channels, resulting in residual impurities that affect gas transmission and electrochemical reaction efficiency in the fuel cell. Furthermore, traditional cleaning tools lack reasonable design in terms of water flow control and hose management, easily leading to water leakage and hose entanglement, reducing the safety and efficiency of the cleaning work.

[0003] Therefore, it is urgent to develop a high-efficiency, convenient, and comprehensive cleaning tool for the flow field of fuel cell bipolar plates. Utility Model Content

[0004] Purpose of this utility model: The purpose of this utility model is to enable water flow to accurately cover every corner of the flow field by using a water outlet head that can flexibly extend into the bipolar plate flow field, in conjunction with a water pressure driven water outlet structure, so as to effectively remove residual impurities and catalyst particles and ensure smooth gas flow in the fuel cell; Another purpose of this utility model is to achieve quick retraction and fixation of the connecting hose, avoid hose tangling and knotting, and reduce storage space occupation.

[0005] Technical solution: A fuel cell bipolar plate flow field cleaning tool includes a receiving cavity, a support column fixedly connected inside the receiving cavity, a take-up reel rotatably connected to the outer wall of the support column, a connecting hose fixedly connected inside the take-up reel, an outlet opening on the front surface of the receiving cavity, and one end of the connecting hose away from the take-up reel extending to the outside of the receiving cavity and fixedly connected to a water outlet head.

[0006] Furthermore, a locking port is provided on the upper surface of the storage cavity, and a locking cavity is fixedly connected above the locking port on the upper surface of the storage cavity. Multiple locking holes are symmetrically provided on the upper surface of the take-up reel, and the locking cavity is engaged with the locking hole.

[0007] Furthermore, the outlet is symmetrically connected to rotating posts inside, and the outer walls of both rotating posts are in contact with the outer wall of the connecting hose.

[0008] Furthermore, a sliding plate is slidably connected inside the locking cavity, and a wedge-shaped post is fixedly connected to the lower surface of the sliding plate. The bottom end of the wedge-shaped post extends into the interior of the storage cavity and engages with the locking hole. A sliding groove is provided on the front surface of the locking cavity, and a lever is slidably connected inside the sliding groove. The lever is fixedly connected to the sliding plate.

[0009] Furthermore, the water outlet includes a circular cavity, a cylinder is fixedly connected to the lower inner surface of the circular cavity, a spring cavity is slidably connected to the outer side wall of the cylinder, a return spring is fixedly connected between the spring cavity and the cylinder, multiple water inlet grooves are symmetrically opened on the upper surface of the circular cavity, a water outlet groove is opened on the outer side wall of the circular cavity, and a blocking ring is fixedly connected to the upper surface of the cylinder, the blocking ring is in contact with the water outlet groove.

[0010] Furthermore, the outer wall of the connecting hose is symmetrically provided with multiple one-way communication holes.

[0011] Furthermore, the outer wall of the support column is provided with a groove, and a torsion spring is wound around the outer wall of the groove. The top end of the torsion spring is fixedly connected to the inside of the groove, and the torsion spring is fixedly connected to the inner wall of the take-up reel.

[0012] Beneficial effects: The water outlet of this cleaning tool can be flexibly extended into the flow field of the fuel cell bipolar plate. Through its unique water pressure driven water outlet structure, it ensures that the water flow accurately covers every corner of the flow field, effectively removing residual impurities, catalyst particles and other pollutants, achieving cleaning without dead angles, significantly improving the cleaning effect, ensuring smooth gas flow and efficient electrochemical reaction in the fuel cell, thereby extending the service life of the bipolar plate and improving the overall performance of the fuel cell.

[0013] The tool's hose retraction system is ingeniously designed. Through the combination of an automatic torsion spring retraction and a locking mechanism, it enables rapid retraction and securing of the connecting hose, preventing tangling and knotting when not in use, while also reducing storage space requirements. During operation, users only need to pull or push the relevant components to extend the hose for use and retract it for storage, greatly improving the convenience and efficiency of cleaning operations, reducing the labor intensity of cleaning work, and providing an efficient and convenient solution for the daily maintenance of the flow field of fuel cell bipolar plates. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the front surface structure of the storage cavity of this utility model;

[0016] Figure 3This is a cross-sectional view of the storage cavity of this utility model;

[0017] Figure 4 This is a cross-sectional schematic diagram of the cavity of the water outlet head of this utility model;

[0018] Figure 5 This is a cross-sectional view of the locking cavity of this utility model;

[0019] Figure 6 This is a schematic diagram of the overall structure of the support column of this utility model.

[0020] In the diagram: 1. Receiving cavity; 2. Support column; 3. Reel; 4. Connecting hose; 5. Outlet; 17. Water outlet; 6. Locking port; 7. Locking cavity; 8. Locking hole; 9. Rotating column; 10. Slide plate; 11. Wedge column; 12. Slide groove; 13. Actuating block; 101. Circular cavity; 102. Cylindrical cavity; 103. Spring cavity; 104. Return spring; 105. Water inlet groove; 106. Blocking ring; 14. One-way connecting hole; 15. Groove; 16. Torsion spring. Detailed Implementation

[0021] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0022] like Figures 1-6 As shown, a fuel cell bipolar plate flow field cleaning tool is provided, including a receiving cavity 1. A support column 2 is fixedly connected inside the receiving cavity 1. A take-up reel 3 is rotatably connected to the outer wall of the support column 2. A connecting hose 4 is fixedly connected inside the take-up reel 3. An outlet 5 is opened on the front surface of the receiving cavity 1. One end of the connecting hose 4 away from the take-up reel 3 extends to the outside of the receiving cavity 1 and is fixedly connected to a water outlet head 17. A locking port 6 is opened on the upper surface of the receiving cavity 1. A locking cavity 7 is fixedly connected above the locking port 6 on the upper surface of the receiving cavity 1. Multiple locking holes 8 are symmetrically opened on the upper surface of the take-up reel 3. The locking cavity 7 is engaged with the locking holes 8. A sliding plate 10 is slidably connected inside the locking cavity 7. A wedge-shaped post 11 is fixedly connected to the lower surface of 10. The bottom end of the wedge-shaped post 11 extends into the interior of the storage cavity 1 and engages with the locking hole 8. A sliding groove 12 is provided on the front surface of the locking cavity 7. A lever block 13 is slidably connected inside the sliding groove 12. The lever block 13 is fixedly connected to the sliding plate 10. Multiple one-way communication holes 14 are symmetrically provided on the outer side wall of the connecting hose 4. A groove 15 is provided on the outer side wall of the support post 2. A torsion spring 16 is wound around the outer side wall of the groove 15. The top end of the torsion spring 16 is fixedly connected to the interior of the groove 15. The torsion spring 16 is fixedly connected to the inner side wall of the take-up reel 3. Rotating posts 9 are symmetrically rotatably connected inside the outlet 5. The outer side walls of the two rotating posts 9 are in contact with the outer side wall of the connecting hose 4.

[0023] When the connecting hose 4 is needed, pull the connecting hose 4 to pull the water outlet 17 outward. The take-up reel 3 rotates around the support column 2 under the action of the connecting hose 4, and the rotating column 9 rotates accordingly, reducing the friction between the connecting hose 4 and the outlet 5. At the same time, the torsion spring 16 deforms and accumulates elastic potential energy. After use, push the lever 13 to drive the slide plate 10 to slide in the locking cavity 7, and the wedge column 11 disengages from the locking hole 8, releasing the lock on the take-up reel 3. Release the water outlet 17, and the torsion spring 16 releases its elastic potential energy, driving the take-up reel 3 to rotate in the opposite direction, automatically retracting the connecting hose 4 into the storage cavity 1. After the connecting hose 4 is fully retracted, release the lever 13 to reset it, and the wedge column 11 re-engages into the locking hole 8, fixing the take-up reel 3. During use, water can flow through the one-way communication hole 14 on the connecting hose 4 to connect to the water supply pipe; when not in use, the one-way communication hole 14 prevents water from flowing back out of the connecting hose 4, ensuring the normal operation of the device.

[0024] In this embodiment, the water outlet head 17 includes a circular cavity 101, a cylinder 102 is fixedly connected to the lower inner surface of the circular cavity 101, a spring cavity 103 is slidably connected to the outer side wall of the cylinder 102, a return spring 104 is fixedly connected between the spring cavity 103 and the cylinder 102, a plurality of water inlet grooves 105 are symmetrically opened on the upper surface of the circular cavity 101, a water outlet groove 107 is opened on the outer side wall of the circular cavity 101, and a blocking ring 106 is fixedly connected to the upper surface of the cylinder 102, the blocking ring 106 is in contact with the water outlet groove 107;

[0025] When water flows into the outlet head 17 through the connecting hose 4, it enters the circular cavity 101. Initially, the plug ring 106 is tightly fitted with the outlet groove 107, preventing water from flowing out. As water continuously flows into the circular cavity 101, the water pressure inside the cavity gradually increases. When the water pressure reaches a certain level, it overcomes the elastic force of the return spring 104, pushing the spring cavity 103 to slide upward along the cylinder 102. At this time, the plug ring 106 separates from the outlet groove 107, and the water can then enter the interior of the circular cavity 101 through the inlet groove 105 and flow smoothly out from the outlet groove 107, thus realizing the water outlet function. When use is finished, the water supply stops, and the water pressure inside the circular cavity 101 drops. The return spring 104 returns to its original deformation, releases its elastic potential energy, and pushes the spring cavity 103 to slide downward along the cylinder 102 to reset. As the chamber 103 slides down, the blocking ring 106 re-engages tightly with the water outlet 107, sealing the water outlet 107 and preventing the remaining water from flowing out, thus avoiding leakage. This ensures the sealing of the water outlet 17 in the idle state and the overall cleanliness of the device. The water outlet 17 can extend into the interior of the battery bipolar plate flow field, making cleaning more comprehensive.

[0026] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fuel cell bipolar plate flow field cleaning tool, comprising a receiving cavity (1), characterized in that: The storage cavity (1) is fixedly connected to a support column (2), and the outer wall of the support column (2) is rotatably connected to a take-up reel (3). The inside of the take-up reel (3) is fixedly connected to a connecting hose (4). The front surface of the storage cavity (1) is provided with an outlet (5). One end of the connecting hose (4) away from the take-up reel (3) extends to the outside of the storage cavity (1) and is fixedly connected to a water outlet (17).

2. The fuel cell bipolar plate flow field cleaning tool according to claim 1, characterized in that: The upper surface of the storage cavity (1) is provided with a locking port (6). The upper surface of the storage cavity (1) is fixedly connected with a locking cavity (7) above the locking port (6). The upper surface of the take-up reel (3) is symmetrically provided with multiple locking holes (8). The locking cavity (7) is engaged with the locking hole (8).

3. The fuel cell bipolar plate flow field cleaning tool according to claim 1, characterized in that: The outlet (5) is symmetrically connected to rotating posts (9), and the outer walls of the two rotating posts (9) are in contact with the outer wall of the connecting hose (4).

4. The fuel cell bipolar plate flow field cleaning tool according to claim 2, characterized in that: The locking cavity (7) is slidably connected to a slide plate (10), and a wedge-shaped post (11) is fixedly connected to the lower surface of the slide plate (10). The bottom end of the wedge-shaped post (11) extends into the interior of the storage cavity (1) and engages with the locking hole (8). A sliding groove (12) is provided on the front surface of the locking cavity (7), and a lever block (13) is slidably connected inside the sliding groove (12). The lever block (13) is fixedly connected to the slide plate (10).

5. The fuel cell bipolar plate flow field cleaning tool according to claim 1, characterized in that: The water outlet head (17) includes a circular cavity (101), a cylinder (102) is fixedly connected to the lower inner surface of the circular cavity (101), a spring cavity (103) is slidably connected to the outer side wall of the cylinder (102), a return spring (104) is fixedly connected between the spring cavity (103) and the cylinder (102), a plurality of water inlet grooves (105) are symmetrically opened on the upper surface of the circular cavity (101), a water outlet groove (107) is opened on the outer side wall of the circular cavity (101), a blocking ring (106) is fixedly connected to the upper surface of the cylinder (102), and the blocking ring (106) is in contact with the water outlet groove (107).

6. The fuel cell bipolar plate flow field cleaning tool according to claim 1, characterized in that: The outer wall of the connecting hose (4) is symmetrically provided with multiple one-way communication holes (14).

7. The fuel cell bipolar plate flow field cleaning tool according to claim 1, characterized in that: The outer wall of the support column (2) is provided with a groove (15), and a torsion spring (16) is wound around the outer wall of the groove (15). The top end of the torsion spring (16) is fixedly connected to the inside of the groove (15), and the torsion spring (16) is fixedly connected to the inner wall of the take-up reel (3).

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