A fuel cell composite bipolar plate rust removal device

Abstract

The utility model belongs to fuel cell technical field, concretely is a kind of fuel cell composite bipolar plate rust cleaning device, including base, its characterized in that, pickling unit and water washing unit are equipped in the base, the pickling unit and water washing unit all include accommodating cavity, the accommodating cavity is equipped with rotary drum, the rotary drum is placed with the holder in, rotary drum is washed to the bipolar plate on holder by the liquid in its inside driven by rotation, in the utility model, pickling unit and water washing unit are arranged on base, first place the bipolar plate after immersion in the rotary drum of pickling unit, rotary drum is filled with acidic solution, place holder on after fixing bipolar plate by clamp, rotary drum is driven by rotation to clean the rust on bipolar plate by acidic solution, cleaning efficiency is high, and bipolar plate will not be damaged, after pickling work is completed, holder is moved to the rotary drum of water washing unit, and bipolar plate is washed, and acidic solution adhered on the surface of bipolar plate is washed away.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell technology, specifically to a rust removal device for composite bipolar plates in fuel cells. Background Technology

[0002] While bipolar plates possess excellent electrical and thermal conductivity and corrosion resistance, porosity is inevitably generated during manufacturing. Porous bipolar plates can degrade fuel cell performance. Impregnation reduces the porosity of bipolar plates, thus ensuring fuel cell performance. However, impregnated composite bipolar plates are prone to oxidation and corrosion during subsequent processing or storage, affecting their conductivity and the overall performance of the fuel cell. Traditional rust removal methods, such as mechanical grinding, are inefficient and can damage the substrate. Especially for composite bipolar plates that have undergone resin impregnation, conventional rust removal methods may destroy the protective layer formed by the impregnation, affecting the bipolar plate's sealing performance. Utility Model Content

[0003] In order to overcome the above-mentioned defects in the prior art, this utility model provides a rust removal device for fuel cell composite bipolar plates.

[0004] A rust removal device for composite bipolar plates of fuel cells includes a base, an acid washing unit and a water washing unit, both of which include a receiving cavity. A rotating cylinder is provided in the receiving cavity, and a shelf is placed inside the rotating cylinder. The rotating cylinder drives the liquid inside to clean the bipolar plates on the shelf by rotating.

[0005] Furthermore, a rotating seat is provided at the bottom of the cavity, the rotating cylinder is rotatably mounted on the rotating seat, a first bevel gear is sleeved on the outer wall of the rotating cylinder, the first bevel gear meshes with a second bevel gear, the second bevel gear is connected to the output end of the drive motor, and the drive motor is fixedly mounted on the base.

[0006] Furthermore, the top of the rotating drum is provided with a sealing cover, and the side wall of the sealing cover is circumferentially distributed with several mounting protrusions. The top of the base is provided with a blocking protrusion, and the adjacent blocking protrusions are connected by a mounting groove. The mounting protrusions are inserted into the mounting grooves from top to bottom, and by rotating, the mounting protrusions are positioned directly below the blocking protrusions.

[0007] Furthermore, a support base is provided on the bottom inner wall of the rotating drum, a support plate is rotatably mounted on the top of the support base, and a shelf is placed on the top of the support plate.

[0008] Furthermore, the top of the shelf is provided with a lifting handle.

[0009] Furthermore, the top of the shelf is provided with a limiting cylinder, and the center of the bottom of the sealing cover is provided with a limiting rod, which is inserted into the limiting cylinder.

[0010] Furthermore, the shelf is provided with several support plates for supporting bipolar plates. Each support plate has a baffle door on one side and intersecting baffles on the other sides to block the bipolar plates.

[0011] Furthermore, the bottom of the rotating drum is connected to a pipe via a rotary sealing joint, and the pipe is equipped with a switch valve.

[0012] Due to the adoption of the above technical solutions, the beneficial technical effects of this utility model are as follows: In this utility model, a cleaning unit and a water washing unit are set on the base. The dipped bipolar plate is first placed in the rotating drum of the pickling unit, which is filled with an acidic solution. After the bipolar plate is fixed by a clamp, it is placed on the shelf. The rotating drum drives the acidic solution to clean the rust on the bipolar plate by rotating. The cleaning efficiency is high and the bipolar plate will not be damaged. After the pickling work is completed, the shelf is moved to the rotating drum of the water washing unit to wash the bipolar plate with water and clean the acidic solution adhering to the surface of the bipolar plate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the installation structure of a rust removal device for a fuel cell composite bipolar plate according to the present invention;

[0014] Figure 2 This is a top view of a rust removal device for a fuel cell composite bipolar plate according to the present invention.

[0015] Figure 3 This is a schematic cross-sectional view of the rust removal device for composite bipolar plates of fuel cells according to the present invention.

[0016] Figure 4 This is a schematic diagram of the sealing cap structure in this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the central shelf of this utility model.

[0018] In the diagram: 1. Base; 2. Receiving cavity; 3. Rotary cylinder; 4. Shelf; 5. Rotating seat; 6. First bevel gear; 7. Second bevel gear; 8. Drive motor; 9. Sealing cover; 10. Mounting protrusion; 11. Blocking protrusion; 12. Mounting groove; 13. Support seat; 14. Support plate; 15. Lifting handle; 16. Limiting cylinder; 17. Limiting rod; 18. Support plate; 19. Baffle door; 20. Stop bar; 21. Rotary sealing joint; 22. Pipe; 23. Switch valve. Detailed Implementation

[0019] To more clearly illustrate the technical solution of this utility model, the following description is made in conjunction with the accompanying drawings. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings and embodiments without creative effort, and all of them fall within the protection scope of this utility model.

[0020] according to Figure 1-5 As shown, a rust removal device for composite bipolar plates of fuel cells includes a base 1. The base 1 is provided with an acid washing unit and a water washing unit. Both the acid washing unit and the water washing unit include a receiving cavity 2. The receiving cavity 2 is provided with a rotating cylinder 3. A shelf 4 is placed inside the rotating cylinder 3. The rotating cylinder 3 drives the liquid inside it to clean the bipolar plates on the shelf 4.

[0021] In the above specific technical solution, a cleaning unit and a water washing unit are set on the base 1. The dipped bipolar plate is first placed in the rotating drum 3 of the pickling unit. The rotating drum 3 is filled with an acidic solution. After the bipolar plate is fixed by a clamp, it is placed on the shelf 4. The rotating drum 3 drives the acidic solution to clean the rust on the bipolar plate by rotating. The cleaning efficiency is high and the bipolar plate will not be damaged. After the pickling work is completed, the shelf 4 is moved to the rotating drum 3 of the water washing unit to wash the bipolar plate and remove the acidic solution attached to the surface of the bipolar plate.

[0022] Preferably, the acidic solution is dilute hydrochloric acid or dilute sulfuric acid.

[0023] The bottom of the cavity 2 is provided with a rotating seat 5, and the rotating drum 3 is rotatably mounted on the rotating seat 5. A first bevel gear 6 is sleeved on the outer wall of the rotating drum 3. The first bevel gear 6 meshes with a second bevel gear 7. The second bevel gear 7 is connected to the output end of the drive motor 8. The drive motor 8 is fixedly mounted on the base 1. When the drive motor 8 is started, the rotating drum 3 is driven to rotate. Preferably, during the pickling and water washing process, the rotating drum 3 rotates in a forward-reverse mode, and the rotation time is 600s each time. After the water washing is completed, the rack 4 is placed in the drying device for hot air drying. Preferably, the bottom of the rotating drum 3 is mounted on the rotating seat 5 through a bearing, and the top of the rotating drum 3 is rotatably connected to the base 1 through a bearing.

[0024] The top of the rotating drum 3 is provided with a sealing cover 9. The side wall of the sealing cover 9 is circumferentially distributed with a number of mounting protrusions 10. The top of the base 1 is provided with a blocking protrusion 11. There is a mounting groove 12 between adjacent blocking protrusions 11. The mounting protrusions 10 are inserted into the mounting groove 12 from top to bottom. By rotating, the mounting protrusions 10 are positioned directly below the blocking protrusions 11. The sealing cover 9 is placed on the top of the base 1. The blocking protrusions 11 make the sealing cover 9 positioned above the rotating drum 3.

[0025] The bottom inner wall of the rotating cylinder 3 is provided with a support seat 13, and a support plate 14 is rotatably installed on the top of the support seat 13. A shelf 4 is placed on the top of the support plate 14. The support seat 13 provides support for the shelf 4. The support plate 14 is rotatably installed on the support seat 13, which can prevent friction between the rotating cylinder 3 and the shelf 4 during the rotation process.

[0026] The top of the shelf 4 is equipped with a lifting handle 15, which facilitates the movement of the shelf 4 by a hoisting machine.

[0027] The top of the shelf 4 is provided with a limiting cylinder 16, and the center of the bottom of the sealing cover 9 is provided with a limiting rod 17. The limiting rod 17 is inserted into the limiting cylinder 16, which can limit the shelf 4 and prevent the shelf 4 from moving freely in the rotating cylinder 3.

[0028] The shelf 4 is provided with several support plates 18 for supporting bipolar plates. Each support plate 18 has a baffle door 19 on one side and intersecting baffles 20 on the other side to block the bipolar plates, which facilitates the placement of bipolar plates.

[0029] The bottom of the rotating drum 3 is connected to the pipe 22 via a rotary sealing joint 21. The pipe 22 is equipped with a switch valve 23. Opening the switch valve 23 releases the original liquid and replaces the liquid inside the rotating drum 3.

[0030] The above embodiments are merely exemplary embodiments of the present utility model and are not intended to limit the present utility model. The scope of protection of the present utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present utility model.

Claims

1. A rust removal device for composite bipolar plates of fuel cells, comprising a base (1), characterized in that, The base (1) is provided with an acid washing unit and a water washing unit. Both the acid washing unit and the water washing unit include a receiving cavity (2). The receiving cavity (2) is provided with a rotating cylinder (3). The rotating cylinder (3) is placed with a shelf (4). The rotating cylinder (3) drives the liquid inside to clean the bipolar plate on the shelf (4) by rotating.

2. The rust removal device for fuel cell composite bipolar plates according to claim 1, characterized in that, The bottom of the cavity (2) is provided with a rotating seat (5), the rotating cylinder (3) is rotatably mounted on the rotating seat (5), a first bevel gear (6) is sleeved on the outer wall of the rotating cylinder (3), the first bevel gear (6) meshes with a second bevel gear (7), the second bevel gear (7) is connected to the output end of the drive motor (8), and the drive motor (8) is fixedly mounted on the base (1).

3. The rust removal device for fuel cell composite bipolar plates according to claim 2, characterized in that, The top of the rotating cylinder (3) is provided with a sealing cover (9), and a number of mounting protrusions (10) are distributed circumferentially on the side wall of the sealing cover (9). The top of the base (1) is provided with a blocking protrusion (11), and there is a mounting groove (12) between adjacent blocking protrusions (11). The mounting protrusions (10) are inserted into the mounting groove (12) from top to bottom. By rotating, the mounting protrusions (10) are positioned directly below the blocking protrusions (11).

4. The rust removal device for fuel cell composite bipolar plates according to claim 3, characterized in that, The bottom inner wall of the rotating drum (3) is provided with a support seat (13), and a support plate (14) is rotatably installed on the top of the support seat (13). A shelf (4) is placed on the top of the support plate (14).

5. The rust removal device for fuel cell composite bipolar plates according to claim 4, characterized in that, The shelf (4) is provided with a lifting handle (15) at the top.

6. The rust removal device for fuel cell composite bipolar plates according to claim 5, characterized in that, The shelf (4) is provided with a limiting tube (16) at the top, and a limiting rod (17) is provided at the center of the bottom of the sealing cover (9). The limiting rod (17) is inserted into the limiting tube (16).

7. The rust removal device for a fuel cell composite bipolar plate according to claim 6, characterized in that, The shelf (4) is provided with several support plates (18) for supporting bipolar plates. Each support plate (18) has a baffle door (19) on one side and intersecting baffles (20) on the other side for blocking the bipolar plates.

8. The rust removal device for a fuel cell composite bipolar plate according to claim 7, characterized in that, The bottom of the rotating drum (3) is connected to the pipe (22) via a rotary sealing joint (21), and the pipe (22) is equipped with a switch valve (23).

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