A hydrogen fuel cell bipolar plate

Abstract

The present invention provides a bipolar plate for a hydrogen fuel cell, which relates to the technical field of bipolar plates for batteries. The bipolar plate for a hydrogen fuel cell includes two mounting plates. A plurality of metal plates are provided on one side of each of the two mounting plates close to each other. Cross plates are provided on the sides of the two mounting plates away from each other. Two symmetrically distributed chutes are formed inside each cross plate. An L-shaped plate located on the left and right sides of the mounting plate is slidably connected inside each of the two chutes. And a fastening bolt located above the mounting plate is threadedly connected inside each L-shaped plate. Place the mounting plate between the two L-shaped plates on the cross plate, push the two L-shaped plates to slide along their respective chutes to one side of the mounting plate, and rotate the fastening bolt to make it descend along the L-shaped plate. The bottom end of the fastening bolt presses against the mounting plate for rigid fixation, so that the mounting plate is not easily detached from between the cross plate and the two L-shaped plates when it is collided and vibrated. The user rotates the two double-headed screws at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of battery bipolar plates, and specifically to a bipolar plate for a hydrogen fuel cell. Background Art

[0002] The bipolar plate, also known as the current collector plate, is one of the important components of a fuel cell and has the following functions and properties: separating fuel from the oxidant and preventing gas permeation; collecting and conducting current with high conductivity; designing and machining flow channels to evenly distribute gas to the reaction layer of the electrode for electrode reaction, and at the same time having low cost, being easy to machine mechanically, and being suitable for mass production, etc. The thickness of the bipolar plate should be as thin as possible to reduce the conduction resistance of current and heat.

[0003] In a Chinese patent with the authorization announcement number CN215377450U, a bipolar plate for a hydrogen fuel cell is disclosed, which includes a mounting plate. Fixed buckles are provided at the lower parts on the left and right sides of the mounting plate, and the inner surfaces of the lower ends of the fixed buckles are connected to each other by an elastic rope. An installation frame is fixedly installed on the outer surface of the fixed buckle, and a rotating rod is provided at the outer end of the installation frame. A compression spring is sleeved on the outer side of the inner part of the rotating rod, and the compression spring is located on the right side inside the installation frame. A connecting head is fixedly installed at the top of the left end of the rotating rod, and the rotating rod is connected to the top end of a connecting rope through the connecting head. In this bipolar plate for a hydrogen fuel cell, through the use of the rotating rod, the device can drive the connecting head inside to rotate. After that, the rotation of the connecting head can adjust the length of the connecting rope, so as to adjust the distance between the two mounting plates, enabling the device to be connected and fixed to different-sized batteries or magnetic sheets inside, and because of the use of the compression spring, the buckle and the installation frame can be fixed together, thus fixing the connecting head and fixing the length of the connecting rope to avoid shaking.

[0004] However, the above technical solution still has the following defects. The device uses an elastic rope to pull the two fixed buckles to clamp and fix the mounting plate, which is an elastic fixation and has a poor fixing effect on the mounting plate. When the mounting plate is impacted and vibrated, the elastic rope is easily stressed and stretched, causing the fixed buckle to break away from the mounting plate and resulting in the dropping of the mounting plate. And when the rotating rod winds up the pulling rope and tightens it, the buckle needs to be exactly aligned with the groove opened on the installation frame to fix the pulling rope, which has great limitations and cannot ensure that the buckle can be accurately fixed into the installation frame every time the pulling rope is wound up. Summary of the Invention

[0005] The purpose of the present invention is to provide a bipolar plate for a hydrogen fuel cell, aiming to solve the problem of poor fixing effect on the mounting plate in the prior art.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical scheme: the hydrogen fuel cell bipolar plate comprises: two mounting plates, a plurality of metal plates are arranged on the sides of the two mounting plates close to each other, a transverse plate is arranged on the sides of the two mounting plates away from each other, each of the transverse plates has two slide grooves symmetrically distributed on the left and right, the two slide grooves are slidably connected to L-shaped plates located on the left and right sides of the mounting plates, and each of the L-shaped plates is threadedly connected to a fastening bolt located above the mounting plates, threaded cylinders are fixedly installed on the left and right ends of the two transverse plates, and a double-headed screw for pushing the two threaded cylinders adjacent to each other is arranged between the two upper and lower screw cylinders.

[0007] In order to enable the present invention to better adjust the distance between metal plates, a further technical solution of the present invention is that a transverse groove is opened inside the mounting plate, and a slider sliding inside the transverse groove is fixedly installed at the bottom of the plurality of metal plates, and the cross-sectional shape of the transverse groove and the slider is T-shaped.

[0008] In order to enable the present invention to have a better effect of protecting the mounting plate, a further technical solution of the present invention is that a protective pad is provided at the bottom end of the fastening bolt.

[0009] In order to make the present invention have a better effect of limiting the L-shaped plate, a further technical solution of the present invention is that the bottom end of the L-shaped plate is fixedly connected with a limiting plate located on one side of the horizontal plate.

[0010] In order to make the present invention have a better effect of shifting the double-headed screw, a further technical solution of the present invention is that a shifting shaft is fixedly installed in the middle of the double-headed screw, and the outer wall of the shifting shaft is provided with a plurality of annular and evenly distributed anti-skid grooves.

[0011] In order to enable the present invention to better adjust the position of the L-shaped plate, a further technical solution of the present invention is that the side walls of each L-shaped plate are fixedly connected to a support block, the top of the support block located below is fixedly connected to a sleeve, and the bottom of the support block located above is fixedly connected to a sliding rod sliding inside the sleeve.

[0012] In order to make the present invention have a better effect of installing the transverse plate, a further technical solution of the present invention is that the end of the transverse plate is fixedly connected with a positioning plate, and a positioning hole is opened inside the positioning plate.

[0013] The beneficial effects of the present invention are:

[0014] 1. When the present invention is in use, the mounting plate is placed between the two L-shaped plates on the horizontal plate, the two L-shaped plates are pushed to slide along their respective slide grooves to one side of the mounting plate, the fastening bolts are turned to make them descend along the L-shaped plate, and the bottom ends of the fastening bolts are used to tighten the mounting plate for rigid fixation, so that the mounting plate is not easily dropped from the horizontal plate and between the two L-shaped plates when subjected to collision and vibration. The user simultaneously turns the two double-headed screws to make the threaded barrels at both ends of the double-headed screws slide in opposite directions along their surfaces, so that the two horizontal plates are brought closer to or farther away from each other, and the distance between the two mounting plates can be better adjusted, so that the adjustment limitations of the two mounting plates are small, the distance between the mounting plates can be accurately and quickly adjusted, and the practical performance of the equipment is effectively enhanced.

[0015] 2. When the present invention is in use, through the setting of the sleeve and the slide rod, when the user pushes the lower L-shaped plate to slide, the upper L-shaped plate can be driven to slide synchronously, so that the upper and lower mounting plates can be accurately aligned up and down, and the slide rod slides inside the sleeve, which can adjust the distance between the two mounting plates without affecting it. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention.

[0017] Figure 2 It is a front view of a specific embodiment of the present invention.

[0018] Figure 3 It is a schematic structural diagram of a metal plate according to a specific embodiment of the present invention.

[0019] Figure 4 The present invention Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0020] In the figure: 1. Mounting plate; 2. Metal plate; 3. Horizontal plate; 4. Slide groove; 5. L-shaped plate; 6. Fastening bolts; 7. Threaded barrel; 8. Double-headed screw; 9. Horizontal groove; 10. Slider; 11. Protective pad; 12. Limit plate; 13. Toggle shaft; 14. Anti-slip groove; 15. Support block; 16. Sleeve; 17. Slide rod; 18. Positioning plate; 19. Positioning hole. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0022] like Figures 1-4As shown, a hydrogen fuel cell bipolar plate comprises: two mounting plates 1, a plurality of metal plates 2 are arranged on the sides of the two mounting plates 1 close to each other, a transverse plate 3 is arranged on the sides of the two mounting plates 1 away from each other, each transverse plate 3 has two slide grooves 4 symmetrically distributed on the left and right sides, the two slide grooves 4 are slidably connected to L-shaped plates 5 located on the left and right sides of the mounting plates 1, and each L-shaped plate 5 is threadedly connected to a fastening bolt 6 located above the mounting plates 1, threaded cylinders 7 are fixedly installed on the left and right ends of the two transverse plates 3, and a double-headed screw 8 for pushing the two threaded cylinders 7 adjacent to each other is arranged between the two upper and lower threaded cylinders 7 for pushing them to move in opposite directions.

[0023] The two L-shaped plates 5 are pushed to slide along their respective slide grooves 4 to one side of the mounting plate 1, and the fastening bolts 6 are turned to make them descend along the L-shaped plate 5. The mounting plate 1 is tightened and rigidly fixed by the bottom ends of the fastening bolts 6, so that the mounting plate 1 is not easily dropped from the cross plate 3 and between the two L-shaped plates 5 when subjected to collision and vibration. The user simultaneously turns the two double-headed screws 8 so that the threaded barrels 7 at both ends of the double-headed screws 8 slide in opposite directions along their surfaces, so that the two cross plates 3 are brought closer to or farther away from each other, and the distance between the two mounting plates 1 can be better adjusted, so that the adjustment limitations of the two mounting plates 1 are relatively small, and the distance between the mounting plates 1 can be accurately and quickly adjusted, effectively enhancing the practical performance of the equipment.

[0024] Specifically, a transverse groove 9 is opened inside the mounting plate 1, and a slider 10 sliding inside the transverse groove 9 is fixedly installed at the bottom of the plurality of metal plates 2. By pushing the slider 10 to slide inside the transverse groove 9, the position of the metal plate 2 can be better adjusted.

[0025] Furthermore, the cross-sectional shapes of the transverse groove 9 and the slider 10 are both T-shaped, so that the slider 10 will not escape from the inside of the transverse groove 9 .

[0026] Specifically, a protective pad 11 is provided at the bottom end of the fastening bolt 6 . The provision of the protective pad 11 can better protect the mounting plate 1 , thereby preventing the mounting plate 1 from being worn due to excessive pressure of the fastening bolt 6 .

[0027] Preferably, the bottom end of the L-shaped plate 5 is fixedly connected to a limiting plate 12 located on one side of the transverse plate 3 . By setting the limiting plate 12 , the L-shaped plate 5 can be better limited so that it cannot escape from the inside of the slide groove 4 .

[0028] Specifically, a shifting shaft 13 is fixedly installed in the middle of the double-headed screw 8. Through the arrangement of the shifting shaft 13, the double-headed screw 8 can be shifted to rotate well.

[0029] Furthermore, the outer wall of the dial shaft 13 is provided with a plurality of annular anti-skid grooves 14 evenly distributed. The provision of the anti-skid grooves 14 can increase the friction force on the surface of the dial shaft 13, and the user can dial it for rotation more conveniently.

[0030] Preferably, the side walls of each L-shaped plate 5 are fixedly connected to a support block 15, the top of the support block 15 located at the bottom is fixedly connected to a sleeve 16, and the bottom of the support block 15 located at the top is fixedly connected to a slide rod 17 that slides inside the sleeve 16. Through the arrangement of the sleeve 16 and the slide rod 17, when the user pushes the lower L-shaped plate 5 to slide, the upper L-shaped plate 5 can be driven to slide synchronously, so that the upper and lower mounting plates 1 can be accurately aligned up and down, and the slide rod 17 slides inside the sleeve 16, so that the spacing between the two mounting plates 1 can be adjusted without affecting it.

[0031] Preferably, the end of the transverse plate 3 is fixedly connected with a positioning plate 18, and a positioning hole 19 is opened inside the positioning plate 18. Through the arrangement of the positioning plate 18 and the positioning hole 19, bolts or the like can be passed through the positioning hole 19 to better fix the positioning plate 18.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A bipolar plate for a hydrogen fuel cell, include: Two mounting plates (1), characterized in that a plurality of metal plates (2) are arranged on the sides of the two mounting plates (1) close to each other, and a transverse plate (3) is arranged on the sides of the two mounting plates (1) away from each other, and each of the transverse plates (3) has two sliding grooves (4) symmetrically distributed on the left and right sides, and the interiors of the two sliding grooves (4) are slidably connected to L-shaped plates (5) located on the left and right sides of the mounting plates (1), and the interior of each L-shaped plate (5) is threadedly connected to a fastening bolt (6) located above the mounting plates (1), and the left and right ends of the two transverse plates (3) are fixedly installed with threaded cylinders (7), and a double-headed screw (8) is arranged between the two adjacent threaded cylinders (7) for pushing them to move in opposite directions.

2. The hydrogen fuel cell bipolar plate according to claim 1, It is characterized in that A transverse groove (9) is provided inside the installation plate (1), and a slider (10) which slides inside the transverse groove (9) is fixedly installed at the bottom of the plurality of metal plates (2).

3. The hydrogen fuel cell bipolar plate according to claim 2, It is characterized in that The cross-sectional shapes of the transverse groove (9) and the sliding block (10) are both T-shaped.

4. The hydrogen fuel cell bipolar plate according to claim 1, It is characterized in that A protective pad (11) is provided at the bottom end of the fastening bolt (6).

5. The hydrogen fuel cell bipolar plate according to claim 1, It is characterized in that The bottom end of the L-shaped plate (5) is fixedly connected to a limiting plate (12) located on one side of the transverse plate (3).

6. The hydrogen fuel cell bipolar plate according to claim 1, It is characterized in that A shifting shaft (13) is fixedly mounted in the middle of the double-headed screw (8).

7. The hydrogen fuel cell bipolar plate according to claim 6, It is characterized in that The outer wall of the shifting shaft (13) is provided with a plurality of annular evenly distributed anti-slip grooves (14).

8. The hydrogen fuel cell bipolar plate according to claim 1, It is characterized in that The side wall of each L-shaped plate (5) is fixedly connected to a support block (15), the top of the support block (15) located at the bottom is fixedly connected to a sleeve (16), and the bottom of the support block (15) located at the top is fixedly connected to a sliding rod (17) that slides inside the sleeve (16).

9. The hydrogen fuel cell bipolar plate according to any one of claims 1 to 8, It is characterized in that A positioning plate (18) is fixedly connected to the end of the transverse plate (3), and a positioning hole (19) is provided inside the positioning plate (18).

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