Air-cooled proton exchange membrane fuel cell stack assembling and positioning structure

Abstract

The invention relates to the technical field of cells, in particular to an air-cooled proton exchange membrane fuel cell stack assembling and positioning structure which comprises a base, sliding plates capable of horizontally sliding are arranged on the periphery of the base, a mounting frame is fixed to the ends of the sliding plates, a push plate is fixed to the side wall of the mounting frame, and an assembling base is fixed to the top of the base. A clamping plate capable of horizontally sliding is arranged at the top of the assembling seat, an end plate is clamped in the middle of the clamping plate, supporting rods are fixed to the periphery of the end plate, fuel cell electrode plates sleeve the supporting rods, a supporting column is fixed to the side wall of the base, a sliding frame capable of lifting and sliding is arranged in the supporting column, and the supporting column is fixed to the side wall of the base. An air cylinder is fixed to the top of the sliding frame, a piston rod is fixed to the output end of the air cylinder, and a pressing plate is fixed to the bottom of the piston rod. The air-cooled proton exchange membrane fuel cell stack assembling and positioning structure can be quickly and stably mounted, and does not misplace or deviate during mounting, so that the assembling quality is improved.

Description

Technical Field

[0001] This invention relates to the field of battery technology, specifically to an air-cooled proton exchange membrane fuel cell stack assembly and positioning structure. Background Technology

[0002] A fuel cell is a chemical device that directly converts the chemical energy of fuel into electrical energy. It is also known as an electrochemical generator. Proton exchange membrane fuel cells have high energy conversion efficiency, high specific energy, low operating temperature, environmental friendliness, and a wide range of applicable power, making them one of the ideal alternative energy sources for electronic products, electric vehicles, and backup power.

[0003] A single-cell proton exchange membrane fuel cell typically consists of an anode plate, an anode gas diffusion layer, an anode catalyst layer, a proton exchange membrane, a cathode catalyst layer, a cathode gas diffusion layer, and a cathode plate. A proton exchange membrane fuel cell stack is composed of several single cells stacked in series, which can provide different voltages and power.

[0004] In the assembly of fuel cell stacks, the process is mostly done manually by inserting rods and embedding them into the sockets of multiple fuel cells and stacking them sequentially on the end plate. This assembly method is not only slow but also increases the labor intensity of workers. In addition, the end plate cannot be fixed in position during the stacking process, which causes it to slide during the assembly process, reducing the stability of the assembly. Furthermore, when assembling the stack manually, multiple exchange membrane fuel cells cannot be positioned and installed, which causes some exchange membrane fuel cells to be misaligned and shifted during stacking, reducing the assembly quality. Summary of the Invention

[0005] The purpose of this invention is to provide an air-cooled proton exchange membrane fuel cell stack assembly and positioning structure to solve the problems mentioned in the background art, such as the inconvenience of fixing existing positioning structures, which lead to slippage during stacking and reduced assembly stability, slow manual assembly efficiency, and easy misalignment and displacement during assembly, thus reducing assembly quality. To achieve the above objective, this invention provides the following technical solution: an air-cooled proton exchange membrane fuel cell stack assembly and positioning structure, comprising a base, with horizontally sliding sliding plates around the base, a mounting bracket fixed to the end of the sliding plate, and a push plate fixed to the side wall of the mounting bracket; An assembly base is fixed to the top of the base, and a horizontally sliding clamping plate is provided on the top of the assembly base. An end plate is clamped in the middle of the clamping plate, and support rods are fixed around the end plate. A fuel cell electrode plate is sleeved on the outside of the support rods. The base has a support column fixed to its side wall. The support column has a sliding carriage that can be raised and lowered inside. A cylinder is fixed to the top of the carriage. A piston rod is fixed to the output end of the cylinder. A pressing plate is fixed to the bottom of the piston rod.

[0006] Preferably, a support is fixed to the bottom of the base, a first motor is fixed to the top of the support, a transmission rod is fixedly connected to the output end of the first motor, a gear is fixedly sleeved on the outside of the transmission rod, toothed plates are meshed around the gear, a spring is fixed to one end of the toothed plates, the spring is fixedly connected to the inner wall of the base, and the other end of the toothed plates is fixedly connected to the slide plate.

[0007] Preferably, there are four toothed plates, all of which mesh with gears, and the four toothed plates are connected to the base by springs.

[0008] Preferably, a second motor is fixed to the bottom of the assembly base, a rotating rod is fixedly connected to the output end of the second motor, a turntable is fixedly sleeved on the outside of the rotating rod, a fixed plate is rotatably connected to the bottom of the turntable, a fixed rod is fixed in the middle of the fixed plate, connecting rods are hinged to both ends of the turntable, and a sliding plate is hinged to the end of the connecting rod.

[0009] Preferably, the fixing plate is fixedly connected to the assembly base, and two fixing rods are provided, which are equally distributed at both ends of the assembly base. The sliding plate is slidably sleeved with the fixing plate.

[0010] Preferably, the top of the assembly base is provided with a groove to facilitate the horizontal sliding of the clamping plate, and there are two clamping plates, which slide in the same direction.

[0011] Preferably, the fuel cell electrode plate has through holes around its perimeter to facilitate connection with the support rod, fastening holes are provided at the top of both ends of the fuel cell electrode plate, and fastening rods are fixed at the bottom of both ends of the fuel cell electrode plate, with the fastening rods coinciding with the fastening holes.

[0012] Preferably, a third motor is fixed to the bottom of the support column, a lead screw is fixedly connected to the output end of the third motor, a pulley is fixed to the end of the lead screw, and a belt is wound around the outside of the pulley.

[0013] Preferably, there are two lead screws and pulleys, which are connected by a belt. The slide is slidably sleeved with the lead screw, and the inside of the support column is provided with a groove to facilitate the horizontal sliding of the slide.

[0014] Preferably, a telescopic rod is connected between the pressing plate and the slide, and the pressing plate is on the same vertical plane as the fuel cell electrode plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In this invention, the first motor drives the transmission rod to rotate the gear. The toothed plates around the gear then mesh with it, slide, and stretch the spring. The slide plate at the end of the toothed plate then slides horizontally in the base, thereby driving the push plate mounted by the mounting bracket to fit and push against the periphery of the fuel cell electrode plate, thus aligning and positioning it. This prevents misalignment and displacement during subsequent assembly, improving assembly quality.

[0016] In this invention, the second motor is started to drive the rotating rod to rotate the turntable. The connecting rods at both ends then rotate, and at the same time, the sliding plate hinged at the end is subjected to force and slides along the fixed rod. The clamping plate at the top of the sliding plate then slides in the mounting seat groove, so that the clamping plate fits against both ends of the end plate for clamping and fixing. This prevents the fuel cell electrode plate from sliding during the assembly process and improves the stability of the assembly.

[0017] In this invention, the third motor drives the lead screw to rotate, and the slide sleeve connected to it slides down and drives the pressing plate to slide down to the top of the fuel cell electrode plate. The cylinder drives the piston rod to drive the pressing plate to slide down and squeeze the fuel cell electrode plate. The fastening rod at the bottom of the pressing plate is embedded in the fastening hole at the top of the fuel cell electrode plate, so that multiple fuel cell electrode plates are quickly and stably installed to form a stack, improving the assembly efficiency. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of an air-cooled proton exchange membrane fuel cell stack assembly and positioning structure; Figure 2 A schematic diagram of the overall isometric structure of an air-cooled proton exchange membrane fuel cell stack assembly and positioning structure; Figure 3 A positioning structure for assembling an air-cooled proton exchange membrane fuel cell stack Figure 2 Schematic diagram of the isometric structure viewed from below. Figure 4 A bottom view schematic diagram of the connection structure of a sliding plate, toothed plate, base, etc., of an air-cooled proton exchange membrane fuel cell stack assembly and positioning structure. Figure 5 A schematic diagram of a fuel cell electrode plate stacking installation structure for an air-cooled proton exchange membrane fuel cell stack assembly and positioning structure. Figure 6 A positioning structure for assembling an air-cooled proton exchange membrane fuel cell stack Figure 5 Schematic diagram of the internal structure of the middle assembly base.

[0019] In the picture: 1. Base; 2. Slide plate; 21. Support; 22. First motor; 23. Transmission rod; 24. Gear; 25. Tooth plate; 26. Spring; 3. Mounting bracket; 4. Push plate; 5. Assembly base; 6. Slide groove; 7. Clamping plate; 71. Second motor; 72. Rotating rod; 73. Turntable; 74. Fixing plate; 75. Fixing rod; 76. Connecting rod; 77. Sliding plate; 8. End plate; 9. Support rod; 10. Fuel cell electrode plate; 11. Through hole; 12. Fastening hole; 13. Fastening rod; 14. Support column; 141. Third motor; 142. Lead screw; 143. Pulley; 144. Belt; 15. Carriage; 16. Cylinder; 17. Piston rod; 18. Telescopic rod; 19. Pressing plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1 to 6 The present invention provides a technical solution: an air-cooled proton exchange membrane fuel cell stack assembly and positioning structure, including a base 1, a horizontally sliding slide plate 2 provided around the base 1, a mounting frame 3 fixed to the end of the slide plate 2, and a push plate 4 fixed to the side wall of the mounting frame 3. An assembly base 5 is fixed to the top of the base 1. A horizontally sliding clamping plate 7 is provided on the top of the assembly base 5. An end plate 8 is clamped in the middle of the clamping plate 7. Support rods 9 are fixed around the end plate 8. A fuel cell electrode plate 10 is sleeved on the outside of the support rods 9. A support column 14 is fixed to the side wall of the base 1. The inside of the support column 14 is a slide 15 that can be raised and lowered and slid. A cylinder 16 is fixed to the top of the slide 15. A piston rod 17 is fixed to the output end of the cylinder 16. A pressing plate 19 is fixed to the bottom of the piston rod 17.

[0022] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a support 21 is fixed to the bottom of the base 1, a first motor 22 is fixed to the top of the support 21, a transmission rod 23 is fixedly connected to the output end of the first motor 22, a gear 24 is fixedly sleeved on the outside of the transmission rod 23, a toothed plate 25 meshes around the gear 24, a spring 26 is fixed to one end of the toothed plate 25, the spring 26 is fixedly connected to the inner wall of the base 1, and the other end of the toothed plate 25 is fixedly connected to the slide plate 2.

[0023] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, there are four toothed plates 25, all of which mesh with gears 24, and the four toothed plates 25 are connected to the base 1 by springs 26.

[0024] It should be noted that there are four toothed plates 25, which mesh with the four sides of the gear 24 respectively. The length of the gear 24 is equal to the sum of the lengths of two toothed plates 25. Therefore, when the gear 24 rotates, it will mesh with the four toothed plates 25 at the same time, so that the four toothed plates 25 slide horizontally at the same time. At the same time, springs 26 are set between the toothed plates 25 to support the toothed plates 25 and prevent the toothed plates 25 from slipping and thus affecting the stability of the use.

[0025] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a second motor 71 is fixed to the bottom of the assembly base 5. A rotating rod 72 is fixedly connected to the output end of the second motor 71. A turntable 73 is fixedly sleeved on the outside of the rotating rod 72. A fixed plate 74 is rotatably connected to the bottom of the turntable 73. A fixed rod 75 is fixed in the middle of the fixed plate 74. A connecting rod 76 is hinged to both ends of the turntable 73. A sliding plate 77 is hinged to the end of the connecting rod 76.

[0026] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the fixing plate 74 is fixedly connected to the assembly base 5, and there are two fixing rods 75. The two fixing rods 75 are evenly distributed at both ends of the assembly base 5, and the sliding plate 77 is slidably sleeved with the fixing plate 74.

[0027] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the top of the assembly base 5 is provided with a groove 6 to facilitate the horizontal sliding of the clamping plate 7. There are two clamping plates 7, and the two clamping plates 7 slide in the same direction.

[0028] It should be noted that there are two clamping plates 7, both of which slide horizontally in the top slide groove 6 of the assembly base 5. The two clamping plates 7 slide inward or outward at the same time, so that the distance between the clamping plates 7 can be adjusted, thereby clamping end plates 8 of different sizes and specifications, thus improving its applicability and preventing ends larger than the distance from being unable to be placed in it for stable assembly.

[0029] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the fuel cell electrode plate 10 has through holes 11 around its perimeter to facilitate connection with the support rod 9. Fastening holes 12 are provided at the top of both ends of the fuel cell electrode plate 10. Fastening rods 13 are fixed at the bottom of both ends of the fuel cell electrode plate 10, and the fastening rods 13 coincide with the fastening holes 12.

[0030] It should be noted that each fuel cell electrode plate 10 has a fastening hole 12 on its surface and a fastening rod 13 installed at its bottom. During assembly, the fastening rod 13 at the bottom of the fuel cell electrode plate 10 is inserted into the fastening hole 12 and secured, so that multiple fuel cell electrode plates 10 are stably stacked to form a fuel cell stack.

[0031] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a third motor 141 is fixed to the bottom of the support column 14, a lead screw 142 is fixedly connected to the output end of the third motor 141, a pulley 143 is fixed to the end of the lead screw 142, and a belt 144 is wound around the outside of the pulley 143.

[0032] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, there are two lead screws 142 and pulleys 143. The two pulleys 143 are connected by a belt 144. The slide 15 is slidably sleeved with the lead screw 142. The inside of the support column 14 is provided with a groove to facilitate the horizontal sliding of the slide 15.

[0033] It should be noted that each of the two lead screws 142 is equipped with a pulley 143 at its top. The two pulleys 143 are connected by a belt 144. When the third motor 141 at the bottom of the support column 14 drives the lead screw 142 to rotate, the pulley 143 at the top of the lead screw 142 rotates at the same time. The belt 144 outside the pulley rotates and drives the other pulley 143 to rotate. This causes the two pulleys 143 to drive the lead screw 142 to rotate at the same time, which in turn drives the slide 15 sleeved on the outside of the lead screw 142 to slide up and down. This makes the force on the slide 15 uniform when it rises and falls, and improves the stability during the lifting process.

[0034] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a telescopic rod 18 is connected between the pressing plate 19 and the slide 15, and the pressing plate 19 is on the same vertical plane as the fuel cell electrode plate 10.

[0035] It should be noted that the specific models and specifications of the first motor 22, the second motor 71, the third motor 141, and the cylinder 16 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation methods adopt existing technology in this field, so they will not be elaborated here.

[0036] The method of use and advantages of the present invention: The working process of the air-cooled proton exchange membrane fuel cell stack assembly and positioning structure is as follows: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the end plate 8 is first placed on the assembly base 5 and then fixed. The second motor 71 is started to drive the rotating rod 72 to rotate, and the turntable 73 outside it rotates accordingly. When the turntable 73 rotates, the connecting rods 76 at both ends of it rotate. The sliding plate 77 hinged at the end of the connecting rod 76 is then subjected to force and slides along the fixed rod 75, so that the clamping plate 7 at the top of the sliding plate 77 slides in the groove 6 in the assembly base 5. This allows the clamping plate 7 to slide against the ends of the end plate 8 and clamp and fix it, preventing the end plate 8 from sliding during subsequent battery assembly and affecting subsequent operations, thus improving the stability during assembly. Next, the fuel cell electrode plate 10 is manually fitted directly onto the upper end of the end plate 8. The through holes 11 around its perimeter are embedded into the outside of the top support rod 9 of the end plate 8. When the fuel cell plate is fitted onto the end plate 8, it is not securely engaged. At this time, the first motor 22 is started to drive the transmission rod 23 to rotate the gear 24. When the gear 24 rotates, the toothed plates 25 around its perimeter mesh with it. The toothed plates 25 are subjected to force and slide horizontally, stretching the spring 26. At the same time, the slide plate 2 at the end of the toothed plate 25 slides inward. Meanwhile, the push plate 4 installed at the end of the slide plate 2 through the mounting bracket 3 slides and fits against the perimeter of the fuel cell electrode plate 10, so that the fuel cell electrode plate 10 is immediately aligned and positioned for installation. This prevents misalignment and displacement during the manual assembly process, improving the assembly quality. Simultaneously, as the fuel cell electrode plate 10 is aligned, the third motor 141 is activated, driving the lead screw 142 to rotate. As the lead screw 142 rotates, the pulley 143 at its end rotates accordingly. With the transmission of the belt 144, both lead screws 142 rotate simultaneously, and the slide 15 sleeved on its outside slides down to above the fuel cell electrode plate 10. Then, the cylinder 16 is activated to drive the piston rod 17 to move the pressing plate 19 down. At the same time, the telescopic rod 18 extends and retracts. When the pressing plate 19 slides down, it transmits pressure to the fuel cell electrode plate 10, causing the fuel cell electrode plate 10 to be pressed down. The fastening rod 13 at its bottom is inserted into the fastening hole 12 at the top of the fuel cell electrode plate 10, so that multiple fuel cell electrode plates 10 are stably installed to form a stack, enabling the exchange membrane fuel cell stack to be assembled quickly and improving assembly efficiency.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air-cooled proton exchange membrane fuel cell stack assembly and positioning structure, comprising a base (1), characterized in that: The base (1) is provided with a horizontally sliding slide plate (2) around its perimeter. The end of the slide plate (2) is fixed with a mounting bracket (3), and the side wall of the mounting bracket (3) is fixed with a push plate (4). The base (1) is fixed with an assembly seat (5) at the top. The assembly seat (5) is provided with a horizontally sliding clamping plate (7) at the top. The clamping plate (7) clamps an end plate (8) in the middle. The end plate (8) is fixed with a support rod (9) around its perimeter. A fuel cell electrode plate (10) is sleeved on the outside of the support rod (9). The base (1) has a support column (14) fixed to its side wall. The support column (14) has a sliding carriage (15) that can be raised and lowered inside. The top of the carriage (15) is fixed with a cylinder (16). The output end of the cylinder (16) is fixed with a piston rod (17). The bottom of the piston rod (17) is fixed with a pressing plate (19).

2. The air-cooled proton exchange membrane fuel cell stack assembly and positioning structure according to claim 1, characterized in that: The base (1) has a support (21) fixed at the bottom and a first motor (22) fixed at the top of the support (21). The output end of the first motor (22) is fixedly connected to a transmission rod (23). A gear (24) is fixedly sleeved on the outside of the transmission rod (23). A toothed plate (25) meshes around the gear (24). A spring (26) is fixed at one end of the toothed plate (25). The spring (26) is fixedly connected to the inner wall of the base (1). The other end of the toothed plate (25) is fixedly connected to the slide plate (2).

3. The air-cooled proton exchange membrane fuel cell stack assembly and positioning structure according to claim 2, characterized in that: The toothed plates (25) are provided in four parts, and all four toothed plates (25) mesh with the gears (24). The four toothed plates (25) are connected to the base (1) by springs (26).

4. The air-cooled proton exchange membrane fuel cell stack assembly and positioning structure according to claim 1, characterized in that: The bottom of the assembly base (5) is fixed with a second motor (71), the output end of the second motor (71) is fixedly connected with a rotating rod (72), the outside of the rotating rod (72) is fixedly sleeved with a turntable (73), the bottom of the turntable (73) is rotatably connected with a fixing plate (74), the middle of the fixing plate (74) is fixed with a fixing rod (75), the two ends of the turntable (73) are hinged with connecting rods (76), and the end of the connecting rod (76) is hinged with a sliding plate (77).

5. The air-cooled proton exchange membrane fuel cell stack assembly and positioning structure according to claim 4, characterized in that: The fixing plate (74) is fixedly connected to the assembly base (5). There are two fixing rods (75), which are equally distributed at both ends of the assembly base (5). The sliding plate (77) is slidably sleeved with the fixing plate (74).

6. The air-cooled proton exchange membrane fuel cell stack assembly and positioning structure according to claim 4, characterized in that: The top of the assembly base (5) is provided with a groove (6) to facilitate the horizontal sliding of the clamping plate (7). There are two clamping plates (7), and the two clamping plates (7) slide in the same direction.

7. The air-cooled proton exchange membrane fuel cell stack assembly and positioning structure according to claim 1, characterized in that: The fuel cell electrode plate (10) has through holes (11) around its perimeter to facilitate connection with the support rod (9). The top of both ends of the fuel cell electrode plate (10) has fastening holes (12). The bottom of both ends of the fuel cell electrode plate (10) is fixed with fastening rods (13), and the fastening rods (13) coincide with the fastening holes (12).

8. The air-cooled proton exchange membrane fuel cell stack assembly and positioning structure according to claim 1, characterized in that: A third motor (141) is fixed to the bottom of the support column (14), and a lead screw (142) is fixedly connected to the output end of the third motor (141). A pulley (143) is fixed to the end of the lead screw (142), and a belt (144) is wound around the outside of the pulley (143).

9. The air-cooled proton exchange membrane fuel cell stack assembly and positioning structure according to claim 8, characterized in that: The lead screw (142) and pulleys (143) are provided in two. The two pulleys (143) are connected by a belt (144) winding together. The slide (15) is slidably sleeved with the lead screw (142). The inside of the support column (14) is provided with a groove to facilitate the horizontal sliding of the slide (15).

10. The air-cooled proton exchange membrane fuel cell stack assembly and positioning structure according to claim 1, characterized in that: A telescopic rod (18) is connected between the pressing plate (19) and the slide (15), and the pressing plate (19) is on the same vertical plane as the fuel cell electrode plate (10).

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