Hydrogen production fuel cell metal pole plate coating equipment

Abstract

The utility model relates to the technical field of electroplating, in particular to hydrogen production fuel cell metal pole plate coating equipment which can automatically clean oxide skin on the surface of a metal pole plate before electroplating the metal pole plate, reduces carrying and transferring of plates by workers, and is convenient to use and high in practicability. Comprising a bottom plate, a box and a direct-current power source, the box is fixedly installed at the upper end of the bottom plate, and the direct-current power source is fixedly installed on the box; the electroplating device comprises a box body and further comprises a partition plate, a moving mechanism, a cleaning mechanism, a hoisting mechanism and an electric connecting mechanism, a cleaning cavity and an electroplating cavity are formed in the left portion and the right portion of the box body correspondingly, the partition plate is fixedly installed in the middle of the box body and used for separating the cleaning cavity from the electroplating cavity, and the hoisting mechanism is installed on the moving mechanism which is used for moving the hoisting mechanism. And the hanging mechanism is positioned above the box body.

Description

Technical Field

[0001] The utility model relates to the technical field of electroplating, in particular to a metal plate coating device for a hydrogen production fuel cell. Background Art

[0002] The metal plate on the hydrogen fuel cell is a device for conducting current and separating the reaction gas. It is in the electrolyte for a long time when working. In order to slow down the downward speed of the metal electrode plate during use, it is necessary to electroplate a protective film on the surface of the metal electrode plate. In the prior art, the utility model patent with patent application number 202220447701.X discloses a metal product electroplating equipment with good dustproof effect, which mainly includes a first fixed bin, the top of the first fixed bin is fixedly connected to the second fixed bin, the front of the second fixed bin is movably connected to a sealing door, the interior of the first fixed bin is filled with electroplating liquid, the interior of the second fixed bin is movably connected to the electroplated object, the interior of the second fixed bin is provided with a first movable component, the left side of the second fixed bin is provided with a dust suction component, and the interior of the second fixed bin is provided with a second movable mechanism. When in use, the first transmission rod is driven to rotate by the second motor output shaft, so that the electroplated object at the bottom of the outer steel rope is placed into the electrolyte. The present inventor believes that the following problems exist during its use: since the metal sheet may rust or produce a layer of oxide scale on its surface during long-term storage, the oxide scale will affect the conductivity of the metal sheet and further affect its electroplating effect. Therefore, the oxide scale on the surface of the metal sheet must be removed before electroplating the metal sheet. However, the electroplating equipment in the above-mentioned prior art is not provided with a device for automatically removing the oxide scale of the metal sheet. Therefore, the staff is required to remove the oxide scale of the sheet on other devices before transferring it to the electroplating equipment for electroplating. The transfer of the sheet not only wastes time but is also inconvenient. Therefore, a coating equipment with the function of cleaning the oxide scale on the surface of the metal sheet is needed. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a hydrogen fuel cell metal plate coating equipment which can automatically clean the oxide skin on the surface of the metal plate before electroplating the metal plate, thereby reducing the workers' handling and transfer of the plates. The equipment is easy to use and highly practical.

[0004] The utility model discloses a hydrogen fuel cell metal plate coating device, comprising a base plate, a box body and a DC power supply, wherein the box body is fixedly mounted on the upper end of the base plate, and the DC power supply is fixedly mounted on the box body; the utility model also comprises a partition, a moving mechanism, a cleaning mechanism, a hanging mechanism and an electrical connection mechanism, wherein a cleaning chamber and an electroplating chamber are respectively arranged on the left and right sides of the box body, the partition is fixedly mounted on the middle part of the box body, the partition is used to separate the cleaning chamber and the electroplating chamber, the hanging mechanism is mounted on the moving mechanism, the moving mechanism is used to move the hanging mechanism, the hanging mechanism is located above the box body, the hanging mechanism has a hanging function, a connecting line is arranged on the positive pole of the DC power supply, a plated metal is arranged in the electroplating chamber, the positive pole of the DC power supply is electrically connected to the plated metal through the connecting line, an electroplating liquid is arranged in the electroplating chamber, clean water is arranged in the cleaning chamber, the cleaning mechanism is mounted on the left end of the box body, the cleaning mechanism has a cleaning function, and the negative pole of the DC power supply is connected to the electrical connection mechanism; when the positive pole of the DC power supply is used to When electroplating the metal plate on the hydrogen fuel cell, the metal plate is firstly suspended by a suspension mechanism, and then the oxide skin on the surface of the metal plate is cleaned by a cleaning mechanism, and then the suspension mechanism drives the metal plate to descend by a moving mechanism, until the metal plate descends into a cleaning chamber and contacts with clean water, and the dust remaining on the surface of the metal plate is cleaned by the clean water, and then the suspension mechanism drives the metal plate to move into the electroplating chamber of the box by the moving mechanism, and the metal plate is immersed in the electroplating solution, and then the negative pole of the direct current power supply is electrically connected to the metal plate by an electrical connection mechanism, and then the direct current power supply is turned on, so that the metal plate is electroplated with a layer of protective film in the electroplating chamber; before electroplating the metal plate, the oxide skin on the surface of the metal plate can be automatically cleaned, which reduces the handling and transfer of the plate by workers, is easy to use, improves convenience, and is highly practical.

[0005] Preferably, the moving mechanism includes a lifting plate, an electric slide rail A, a sliding plate, an oil cylinder and a rotating mechanism, the electric slide rail A is fixedly mounted on the lower end of the lifting plate, the sliding plate is mounted on the electric slide rail A, the electric slide rail A is used to move the sliding plate left and right, the fixed end of the upper part of the oil cylinder is fixedly mounted on the sliding plate, the rotating mechanism is mounted on the movable end of the lower part of the oil cylinder, the hanging mechanism is mounted on the rotating mechanism, and the rotating mechanism is used to rotate the hanging mechanism; the lifting plate is fixedly hoisted on the top of the workshop, and when the plate is moved, the electric slide rail A is opened, and the sliding plate can drive the rotating mechanism and the hanging mechanism to move left and right through the sliding plate, and then the hanging mechanism drives the metal plate to move left and right, so that the metal plate can be moved from the cleaning chamber to the electroplating chamber; the oil cylinder is opened, and the oil cylinder can drive the hanging mechanism to lift the metal plate through the rotating mechanism, which facilitates the lifting of the metal plate in the electroplating chamber and the cleaning chamber; the metal plate can be automatically lifted and moved left and right, which facilitates the movement of the metal plate.

[0006] Preferably, the rotating mechanism includes an electric turntable and a rotating shaft, the electric turntable is fixedly mounted on the lower end of the oil cylinder, the rotating shaft is mounted on the rotating end of the lower part of the electric turntable, the hanging mechanism is fixedly mounted on the lower end of the rotating shaft, and the cleaning mechanism is located on the left side of the electric turntable and the rotating shaft; when cleaning the oxide scale on the surface of the metal plate, firstly make one side of the metal plate rush toward the cleaning mechanism, after one side of the metal plate is cleaned, open the electric turntable, the electric turntable rotates the hanging mechanism one hundred and eighty degrees through the rotating shaft, so that the other side of the metal plate is rotated to the side rushing toward the cleaning mechanism, and then the oxide scale on the other side of the metal plate can be cleaned by the cleaning mechanism; it is convenient to clean the oxide scale on the surface of the metal plate.

[0007] Preferably, the hanging mechanism includes a fixed plate, two groups of connecting rods and two groups of hooks. The fixed plate is fixedly installed at the lower end of the rotating shaft, and the two groups of hooks are respectively fixedly installed at the front and rear parts of the lower end of the fixed plate through the two groups of connecting rods. When hanging the metal plate, the two groups of hooks can be hooked into the two holes on the metal plate respectively, which facilitates the hanging of the metal plate.

[0008] Preferably, the electrical connection mechanism includes a rope, a conductive plate, multiple groups of bolts, a wire A, a terminal A, a wire B and a terminal B. The conductive plate is fixedly hung at the lower end of the fixed plate by the rope. A groove is provided in the middle of the conductive plate. The multiple groups of bolts are screwed with the conductive plate. The other ends of the multiple groups of bolts are located in the groove of the conductive plate. The terminal A is fixedly installed on the fixed plate. The terminal A is electrically connected to the conductive plate through the wire A. The terminal B is connected to the negative pole of the DC power supply through the wire B. When the metal plate is hung by the hook, the upper part of the metal plate is located in the groove of the conductive plate. Then, the multiple groups of bolts are rotated so that the multiple groups of bolts press the metal plate against the conductive plate. When the metal plate is electroplated, the terminal B is inserted into the terminal A and electrically connected to the terminal A, so that the negative pole of the DC power supply is electrically connected to the metal plate through the wire B, the terminal B, the terminal A, the wire A and the conductive plate, which facilitates the electroplating of the metal plate.

[0009] Preferably, the cleaning mechanism includes a vertical plate, an electric slide rail B, a lifting block and a laser rust remover. The vertical plate is fixedly mounted on the left part of the upper end of the base plate, the electric slide rail B is fixedly mounted on the vertical plate, the lifting block is mounted on the electric slide rail B, the electric slide rail B is used to move the lifting block up and down, and the laser rust remover is mounted on the lifting block. When cleaning the oxide scale on the surface of the metal plate, align the laser rust remover with the end face of the metal plate, then turn on the laser rust remover, so that the metal plate irradiates the laser to the surface of the metal plate, burns the oxide scale on the surface of the metal plate clean, and at the same time, the lifting block drives the laser rust remover to move up and down through the electric slide rail B, and the laser rust remover can fully clean the oxide scale on the surface of the metal plate during the up and down movement; this facilitates the cleaning of the oxide scale on the surface of the metal plate.

[0010] Preferably, it also includes a mounting plate and a hot air blower, and the hot air blower is fixedly installed on the rear of the box body through the mounting plate; when the metal plate is cleaned in the cleaning chamber, the metal plate is moved to the front side of the hot air blower, and the hot air blower is used to blow dry the water remaining on the surface of the metal plate; this facilitates the cleaning of the water on the surface of the metal plate and improves convenience.

[0011] Preferably, an ultrasonic generator is provided on the box body, a transducer is provided on the ultrasonic generator, and the output end of the ultrasonic generator is located in the cleaning chamber of the box body; when the metal plate is cleaned in the cleaning chamber, the ultrasonic generator is turned on to promote the relative movement between the clean water in the cleaning chamber and the metal plate, thereby improving the cleaning effect of the metal plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the oxide skin on the surface of the metal plate can be automatically cleaned before the metal plate is electroplated, which reduces the workers' handling and transfer of the plate, is easy to use and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a first axonometric structural schematic diagram of the utility model;

[0014] Figure 2 It is a second axonometric structural schematic diagram of the utility model;

[0015] Figure 3 It is a structural diagram of the moving mechanism and the hanging mechanism;

[0016] Figure 4 It is a schematic diagram of the structure of the cleaning mechanism;

[0017] Figure 5 It is a schematic diagram of the structure of the metal plate.

[0018] Markings in the attached drawings: 1. Base plate; 2. Box body; 3. DC power supply; 4. Partition; 5. Lifting plate; 6. Electric slide rail A; 7. Sliding plate; 8. Cylinder; 9. Electric turntable; 10. Rotating axis; 11. Fixed plate; 12. Connecting rod; 13. Hook; 14. Conductive plate; 15. Bolt; 16. Wire A; 17. Terminal A; 18. Wire B; 19. Terminal B; 20. Vertical plate; 21. Electric slide rail B; 22. Lifting block; 23. Laser rust remover; 24. Mounting plate; 25. Hot air blower; 26. Metal plate. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] Example 1

[0021] like Figures 1 to 5 The fuel cell metal plate coating equipment of the utility model comprises a bottom plate 1, a box body 2, a DC power supply 3, a partition 4, a moving mechanism, a cleaning mechanism, a hanging mechanism and an electrical connection mechanism. The box body 2 is fixedly mounted on the upper end of the bottom plate 1, the DC power supply 3 is fixedly mounted on the box body 2, the left and right parts of the box body 2 are respectively provided with a cleaning chamber and an electroplating chamber, the partition 4 is fixedly mounted in the middle part of the box body 2, the partition 4 is used to separate the cleaning chamber and the electroplating chamber, the hanging mechanism is mounted on the moving mechanism, the moving mechanism is used to move the hanging mechanism, the hanging mechanism is located above the box body 2, the hanging mechanism has a hanging function, the positive electrode of the DC power supply 3 is provided with a connecting line, the electroplating chamber is provided with a coating metal, the positive electrode of the DC power supply 3 is electrically connected to the coating metal through the connecting line, the electroplating chamber is provided with an electroplating liquid, the cleaning chamber is provided with clean water, the cleaning mechanism is mounted on the left end of the box body 2, the cleaning mechanism has a cleaning function, and the negative electrode of the DC power supply 3 is connected to the electrical connection mechanism; in the case of a hydrogen production fuel cell When the metal plate 26 is electroplated, the metal plate 26 is first suspended by the suspension mechanism, and then the oxide skin on the surface of the metal plate 26 is cleaned by the cleaning mechanism. After that, the suspension mechanism drives the metal plate 26 to descend by the moving mechanism until the metal plate 26 descends into the cleaning chamber and contacts with clean water, and the dust remaining on the surface of the metal plate 26 is cleaned by the clean water. After that, the suspension mechanism drives the metal plate 26 to move into the electroplating chamber of the box 2 by the moving mechanism, and the metal plate 26 is immersed in the electroplating solution. After that, the negative electrode of the DC power supply 3 is electrically connected to the metal plate 26 by the electrical connection mechanism, and then the DC power supply 3 is turned on, so that the metal plate 26 is electroplated with a protective film in the electroplating chamber. Before electroplating the metal plate 26, the oxide skin on the surface of the metal plate 26 can be automatically cleaned, which reduces the handling and transfer of the plate by the workers, is easy to use, improves convenience, and has high practicality.

[0022] like Figure 1 and Figure 3The moving mechanism includes a lifting plate 5, an electric slide rail A6, a sliding plate 7, a cylinder 8 and a rotating mechanism. The electric slide rail A6 is fixedly installed at the lower end of the lifting plate 5, the sliding plate 7 is installed on the electric slide rail A6, and the electric slide rail A6 is used to move the sliding plate 7 left and right. The fixed end of the upper part of the cylinder 8 is fixedly installed on the sliding plate 7, and the rotating mechanism is installed at the moving end of the lower part of the cylinder 8. The hanging mechanism is installed on the rotating mechanism, and the rotating mechanism is used to rotate the hanging mechanism; the lifting plate 5 is fixedly hoisted on the top of the workshop. When the plate is moved, Open the electric slide rail A6, and the sliding plate 7 can make the oil cylinder 8 drive the rotating mechanism and the hanging mechanism to move left and right through the sliding plate 7, and then make the hanging mechanism drive the metal electrode plate 26 to move left and right, so that the metal electrode plate 26 can be moved from the cleaning chamber to the electroplating chamber; open the oil cylinder 8, and the oil cylinder 8 can drive the hanging mechanism to drive the metal electrode plate 26 to rise and fall through the rotating mechanism, which facilitates the lifting and lowering of the metal electrode plate 26 in the electroplating chamber and the cleaning chamber; the metal electrode plate 26 can be automatically lifted and moved left and right, which facilitates the movement of the metal electrode plate 26.

[0023] like Figure 3 The rotating mechanism includes an electric turntable 9 and a rotating shaft 10. The electric turntable 9 is fixedly mounted on the lower end of the oil cylinder 8, the rotating shaft 10 is mounted on the rotating end of the lower part of the electric turntable 9, the hanging mechanism is fixedly mounted on the lower end of the rotating shaft 10, and the cleaning mechanism is located on the left side of the electric turntable 9 and the rotating shaft 10; when cleaning the oxide scale on the surface of the metal pole plate 26, firstly make one side of the metal pole plate 26 rush toward the cleaning mechanism, after one side of the metal pole plate 26 is cleaned, open the electric turntable 9, the electric turntable 9 rotates the hanging mechanism one hundred and eighty degrees through the rotating shaft 10, so that the other side of the metal pole plate 26 is rotated to the side rushing toward the cleaning mechanism, and then the oxide scale on the other side of the metal pole plate 26 can be cleaned by the cleaning mechanism; it is convenient to clean the oxide scale on the surface of the metal pole plate 26.

[0024] like Figure 3 The hanging mechanism includes a fixed plate 11, two groups of connecting rods 12 and two groups of hooks 13. The fixed plate 11 is fixedly installed at the lower end of the rotating shaft 10. The two groups of hooks 13 are respectively fixedly installed at the front and rear parts of the lower end of the fixed plate 11 through the two groups of connecting rods 12. When hanging the metal electrode plate 26, the two groups of hooks 13 are respectively hooked on the two holes on the metal electrode plate 26, which facilitates the hanging of the metal electrode plate 26.

[0025] like Figure 1 and Figure 3The electrical connection mechanism includes a rope, a conductive plate 14, a plurality of bolts 15, a wire A16, a terminal A17, a wire B18 and a terminal B19. The conductive plate 14 is fixedly hung at the lower end of the fixed plate 11 by a rope. A groove is provided in the middle of the conductive plate 14. The plurality of bolts 15 are screwed with the conductive plate 14. The other ends of the plurality of bolts 15 are located in the groove of the conductive plate 14. The terminal A17 is fixedly installed on the fixed plate 11. The terminal A17 is electrically connected to the conductive plate 14 through the wire A16. The terminal B19 is connected to the negative pole of the DC power supply 3 through the wire B18. When the metal electrode plate 26 is hung by the hook 13, the upper part of the metal electrode plate 26 is located in the groove of the conductive plate 14, and then the multiple sets of bolts 15 are rotated so that the multiple sets of bolts 15 press the metal electrode plate 26 against the conductive plate 14. When the metal electrode plate 26 is electroplated, the terminal B19 is inserted into the terminal A17 and electrically connected to the terminal A17, so that the negative pole of the DC power supply 3 is electrically connected to the metal electrode plate 26 through the wire B18, the terminal B19, the terminal A17, the wire A16 and the conductive plate 14, which facilitates the electroplating of the metal electrode plate 26.

[0026] like Figure 1 and Figure 4 The cleaning mechanism includes a vertical plate 20, an electric slide rail B21, a lifting block 22 and a laser rust remover 23. The vertical plate 20 is fixedly installed on the left part of the upper end of the bottom plate 1, the electric slide rail B21 is fixedly installed on the vertical plate 20, the lifting block 22 is installed on the electric slide rail B21, the electric slide rail B21 is used to move the lifting block 22 up and down, and the laser rust remover 23 is installed on the lifting block 22; when cleaning the oxide scale on the surface of the metal pole plate 26, the laser rust remover 23 is aligned with the end face of the metal pole plate 26, and then the laser rust remover 23 is turned on, so that the metal pole plate 26 irradiates the laser to the surface of the metal pole plate 26, and the oxide scale on the surface of the metal pole plate 26 is burned clean, and at the same time, the lifting block 22 drives the laser rust remover 23 to move up and down through the electric slide rail B21, and the laser rust remover 23 can fully clean the oxide scale on the surface of the metal pole plate 26 during the up and down movement; it is convenient to clean the oxide scale on the surface of the metal pole plate 26.

[0027] An ultrasonic generator is provided on the box 2, and a transducer is provided on the ultrasonic generator. The output end of the ultrasonic generator is located in the cleaning chamber of the box 2; when the metal electrode plate 26 is cleaned in the cleaning chamber, the ultrasonic generator is turned on to promote the relative movement between the clean water in the cleaning chamber and the metal electrode plate 26, thereby improving the cleaning effect of the metal electrode plate 26.

[0028] Example 2

[0029] On the basis of Example 1, a mounting plate 24 and a hot air blower 25 are additionally provided, and the hot air blower 25 is fixedly installed at the rear of the housing 2 through the mounting plate 24; when the metal electrode plate 26 is cleaned in the cleaning chamber, the metal electrode plate 26 is moved to the front side of the hot air blower 25, and the hot air blower 25 is used to blow dry the water remaining on the surface of the metal electrode plate 26; this facilitates the cleaning of the water on the surface of the metal electrode plate 26 and improves convenience.

[0030] The DC power supply 3, the lifting plate 5, the electric slide rail A6, the oil cylinder 8, the electric turntable 9, the wire A16, the terminal A17, the terminal B19, the electric slide rail B21, the laser rust remover 23 and the hot air blower 25 of the hydrogen production fuel cell metal plate coating equipment of the utility model are all purchased on the market, and the technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for the technicians in this field to make creative labor.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A hydrogen fuel cell metal plate coating device, comprising a base plate (1), a housing (2) and a DC power supply (3), wherein the housing (2) is fixedly mounted on the upper end of the base plate (1), and the DC power supply (3) is fixedly mounted on the housing (2); characterized in that: The invention also comprises a partition (4), a moving mechanism, a cleaning mechanism, a hanging mechanism and an electrical connection mechanism. The left and right parts of the box body (2) are respectively provided with a cleaning chamber and an electroplating chamber. The partition (4) is fixedly mounted in the middle part of the box body (2). The partition (4) is used to separate the cleaning chamber and the electroplating chamber. The hanging mechanism is mounted on the moving mechanism. The moving mechanism is used to move the hanging mechanism. The hanging mechanism is located above the box body (2). The hanging mechanism has a hanging function. A connecting line is arranged at the positive pole of the DC power supply (3). A plated metal is arranged in the electroplating chamber. The positive pole of the DC power supply (3) is electrically connected to the plated metal via the connecting line. A plating liquid is arranged in the electroplating chamber. Clean water is arranged in the cleaning chamber. The cleaning mechanism is mounted at the left end of the box body (2). The cleaning mechanism has a cleaning function. The negative pole of the DC power supply (3) is connected to the electrical connection mechanism.

2. A hydrogen fuel cell metal plate coating device as claimed in claim 1, characterized in that: The moving mechanism comprises a hanging plate (5), an electric slide rail A (6), a sliding plate (7), an oil cylinder (8) and a rotating mechanism, wherein the electric slide rail A (6) is fixedly mounted on the lower end of the hanging plate (5), the sliding plate (7) is mounted on the electric slide rail A (6), the electric slide rail A (6) is used to move the sliding plate (7) left and right, the fixed end of the upper part of the oil cylinder (8) is fixedly mounted on the sliding plate (7), the rotating mechanism is mounted on the movable end of the lower part of the oil cylinder (8), the hanging mechanism is mounted on the rotating mechanism, and the rotating mechanism is used to rotate the hanging mechanism.

3. A hydrogen fuel cell metal plate coating device as claimed in claim 2, characterized in that: The rotating mechanism comprises an electric turntable (9) and a rotating shaft (10), wherein the electric turntable (9) is fixedly mounted on the lower end of the oil cylinder (8), the rotating shaft (10) is mounted on the rotating end of the lower part of the electric turntable (9), the hanging mechanism is fixedly mounted on the lower end of the rotating shaft (10), and the cleaning mechanism is located on the left side of the electric turntable (9) and the rotating shaft (10).

4. A hydrogen fuel cell metal plate coating device as claimed in claim 3, characterized in that: The hanging mechanism comprises a fixed plate (11), two groups of connecting rods (12) and two groups of hooks (13); the fixed plate (11) is fixedly mounted on the lower end of the rotating shaft (10); and the two groups of hooks (13) are respectively fixedly mounted on the front and rear parts of the lower end of the fixed plate (11) through the two groups of connecting rods (12).

5. A hydrogen fuel cell metal plate coating device as claimed in claim 4, characterized in that: The electrical connection mechanism comprises a rope, a conductive plate (14), a plurality of bolts (15), a wire A (16), a terminal A (17), a wire B (18) and a terminal B (19); the conductive plate (14) is fixedly hung at the lower end of a fixed plate (11) by means of a rope; a groove is provided in the middle of the conductive plate (14); the plurality of bolts (15) are screwed onto the conductive plate (14); the other ends of the plurality of bolts (15) are located in the groove of the conductive plate (14); the terminal A (17) is fixedly mounted on the fixed plate (11); the terminal A (17) is electrically connected to the conductive plate (14) by means of the wire A (16); and the terminal B (19) is connected to the negative electrode of a DC power source (3) by means of the wire B (18).

6. A hydrogen fuel cell metal plate coating device as claimed in claim 1, characterized in that: The cleaning mechanism comprises a vertical plate (20), an electric slide rail B (21), a lifting block (22) and a laser rust remover (23); the vertical plate (20) is fixedly mounted on the left portion of the upper end of the bottom plate (1); the electric slide rail B (21) is fixedly mounted on the vertical plate (20); the lifting block (22) is mounted on the electric slide rail B (21); the electric slide rail B (21) is used to move the lifting block (22) up and down; and the laser rust remover (23) is mounted on the lifting block (22).

7. A hydrogen fuel cell metal plate coating device as claimed in claim 1, characterized in that: It also includes a mounting plate (24) and a hot air blower (25), wherein the hot air blower (25) is fixedly mounted on the rear part of the box body (2) via the mounting plate (24).

8. The hydrogen fuel cell metal plate coating device according to claim 1, characterized in that: The box body (2) is provided with an ultrasonic generator, the ultrasonic generator is provided with a transducer, and the output end of the ultrasonic generator is located in the cleaning cavity of the box body (2).

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