Fuel cell shell welding pressing device

Abstract

The fuel cell shell welding pressing device comprises a bottom plate, a supporting assembly and a pressing structure, a fuel cell shell comprises a frame body and a top shell arranged on the frame body, a gap exists at the connecting edge of the frame body and the top shell, the supporting assembly is arranged on the bottom plate, the frame body is placed on the supporting assembly, and the pressing structure is arranged on the bottom plate. The supporting assembly is used for bearing the frame body and limiting the frame body, the pressing structures are arranged on the bottom plate and distributed around the frame body, and the pressing structures can tightly press the connecting edge of the frame body and the top shell, so that the welding quality is improved, and the sealing performance of the fuel cell is improved; according to the fuel cell shell welding and pressing device, the connecting edge of the frame body and the top shell can be pressed in the fuel cell shell welding process, the fuel cell shell welding effect is improved, and the overall sealing performance of a fuel cell is improved.

Description

Technical Field

[0001] The invention belongs to the field of fuel cell assembly, and in particular relates to a fuel cell shell welding pressing device. Background Art

[0002] During the assembly process of the fuel cell, the fuel cell shell includes a frame and a top shell arranged on the frame. There is a gap at the connection edge of the frame and the top shell, and the gap needs to be welded. In order to ensure the sealing at the connection edge, it is necessary to tighten the gap at the connection edge of the frame and the top shell before the welding process starts to improve the overall sealing of the fuel cell.

[0003] In the prior art, a pressure block or a pressure rod is often used to compress the gap at the connecting edge of the frame and the top shell. In order to improve the clamping effect, when a pressure block is used for pressing, the crimping area of ​​each pressure block is small, resulting in the need to set a large number of driving structures for driving the pressure blocks to clamp on the frame, resulting in the need to change the path of the welding gun multiple times during welding, affecting the welding efficiency and welding effect of the welding gun; when a pressure rod is used for pressing, the length of the pressure rod is too long, resulting in poor clamping effect of the pressure rod due to the straightness of the pressure rod and the assembly error at the connecting edge of the frame and the top shell during the clamping process, affecting the welding effect and the sealing of the fuel cell shell after welding.

[0004] Therefore, there is an urgent need to develop a fuel cell shell welding pressing device that can press the connecting edge of the frame and the top shell during the fuel cell shell welding process, improve the welding effect of the fuel cell shell, and improve the overall sealing of the fuel cell. Summary of the invention

[0005] The present invention is made to solve the above problems, and aims to provide a fuel cell casing welding pressing device which can press the connection edge of the frame and the top shell during the welding process of the fuel cell casing, can improve the welding effect of the fuel cell casing, and can improve the overall sealing of the fuel cell. In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0006] The present invention provides a fuel cell shell welding and pressing device, the fuel cell shell includes a frame and a top shell arranged on the frame, there is a gap at the connecting edge of the frame and the top shell, and has the following characteristics: the fuel cell shell includes a bottom plate, a support assembly and a pressing structure, the support assembly is arranged on the bottom plate, the frame is placed on the support assembly, and the pressing structure is arranged on the bottom plate and distributed around the frame.

[0007] The fuel cell casing welding pressing device provided by the present invention may also have such a feature that the pressing structure includes a pressing head, and the pressing head presses the gap at the connection edge between the frame and the top shell.

[0008] The fuel cell housing welding pressing device provided by the present invention may also have the following characteristics: the pressing head includes a fixing rod and a pressing block, the fixing rod and the pressing block are movably connected, and a plurality of pressing blocks are evenly arranged on the fixing rod.

[0009] In the fuel cell shell welding pressing device provided by the present invention, it can also have such a feature that a first telescopic hole is provided on the pressing block, a second telescopic hole compatible with the first telescopic hole is provided on the fixing rod, a telescopic rod is provided in the first telescopic hole, one end of the telescopic rod is clamped in the first telescopic hole, and the other end of the telescopic rod can be movably inserted into the second telescopic hole.

[0010] The fuel cell casing welding pressing device provided by the present invention may also have such a feature that a pressing spring is sleeved on the telescopic rod, and the pressing spring is located between the pressing block and the fixing rod.

[0011] In the fuel cell shell welding pressing device provided by the present invention, it can also have such a feature that a first limiting hole is provided on the pressing block, a second limiting hole matched with the first limiting hole is provided on the fixing rod, a limiting rod is provided in the first limiting hole, one end of the limiting rod is clamped in the first limiting hole, the other end of the limiting rod passes through the second limiting hole, and a limiting protrusion is provided at the end of the limiting rod away from the pressing block.

[0012] The fuel cell casing welding and pressing device provided by the present invention may also have such a feature that a mounting rod is provided on the fixing rod, and a first mounting hole is provided on the mounting rod.

[0013] In the fuel cell shell welding pressing device provided by the present invention, it can also have such a feature that the pressing structure includes a driving assembly connected to the pressure head, the driving assembly includes a fixed bracket, a flip plate, a flip beam and a driving cylinder, the fixed bracket is arranged on the bottom plate, the flip plate is arranged on the fixed bracket, the flip beam is movably connected to the flip plate, the driving cylinder includes a cylinder body and a piston rod, one end of the piston rod is movably arranged in the cylinder body, the other end of the piston rod is connected to one end of the flip beam, and the cylinder body is arranged on the fixed bracket.

[0014] The fuel cell casing welding pressing device provided by the present invention may also have such a feature that a second mounting hole matching the first mounting hole is provided at one end of the flip beam away from the driving cylinder, and bolts are inserted into the second mounting hole and the first mounting hole.

[0015] The fuel cell casing welding and pressing device provided by the present invention may also have such a feature that the support assembly includes a support beam and a support plate arranged at one end of the support beam, and the other end of the support beam is arranged on the bottom plate.

[0016] The technical effect of the present invention is as follows: the fuel cell shell welding pressing device provided by the present invention includes a base plate, a support assembly and a pressing structure, the fuel cell shell includes a frame and a top shell arranged on the frame, there is a gap at the connection edge of the frame and the top shell, the support assembly is arranged on the base plate, the frame is placed on the support assembly, the support assembly is used to support the frame and limit the frame, the pressing structure is arranged on the base plate and distributed around the frame, the pressing structure can tightly press the connection edge of the frame and the top shell, improve the welding quality, and improve the sealing of the fuel cell.

[0017] Therefore, the fuel cell shell welding pressing device provided by the present invention can press the connection edge of the frame and the top shell during the fuel cell shell welding process, improve the fuel cell shell welding effect, and improve the overall sealing of the fuel cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] This specification includes the following drawings, which show the following contents:

[0019] Figure 1 is a structural schematic diagram of a fuel cell housing welding and pressing device in an embodiment of the present invention;

[0020] Figure 2 is a schematic structural diagram of a fuel cell housing welding pressing device in an embodiment of the present invention in a front view direction;

[0021] Figure 3 is a schematic structural diagram of a fuel cell housing welding pressing device in a side view direction in an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of the structure of a fuel cell housing welding pressing device in an embodiment of the present invention in a top view direction;

[0023] Figure 5 is a schematic structural diagram of a pressure head in an embodiment of the present invention;

[0024] Figure 6 Schematic diagram of the structure of the driving component in the embodiment of the present invention.

[0025] Marked in the figure: 1-frame, 2-top shell, 10-bottom plate, 20-support assembly, 21-support beam, 22-support plate, 30-pressing structure, 31-pressing head, 311-fixing rod, 3111-second telescopic hole, 3112-second limiting hole, 312-pressing block, 3121-first telescopic hole, 3122-first limiting hole, 313-telescopic rod, 314-pressing spring, 315-limiting rod, 3151-limiting protrusion, 316-mounting rod, 3161-first mounting hole, 32-driving assembly, 321-fixed bracket, 322-flip plate, 323-flip beam, 3231-second mounting hole, 324-driving cylinder, 3241-cylinder body, 3242-piston rod. DETAILED DESCRIPTION

[0026] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0027] Figure 1 is a structural schematic diagram of a fuel cell housing welding and pressing device in an embodiment of the present invention; Figure 2 is a schematic structural diagram of a fuel cell housing welding pressing device in an embodiment of the present invention in a front view direction; Figure 3 is a schematic structural diagram of a fuel cell housing welding pressing device in a side view direction in an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of the fuel cell housing welding pressing device in the embodiment of the present invention in the top view direction.

[0028] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, the fuel cell shell welding pressing device provided by the present invention includes a base plate 10, a support assembly 20 and a pressing structure 30. The fuel cell shell includes a frame 1 and a top shell 2 arranged on the frame 1. There is a gap at the connection edge of the frame 1 and the top shell 2. The support assembly 20 is arranged on the base plate 10, and the frame 1 is placed on the support assembly 20. The support assembly 20 is used to support the frame 1 and limit the frame 1 to ensure the positioning accuracy during welding. The pressing structure 30 is arranged on the base plate 10 and distributed around the frame 1. The pressing structure 30 can tightly press the connection edge of the frame 1 and the top shell 2, improve the welding quality, and improve the sealing of the fuel cell.

[0029] The pressing structure 30 includes a pressing head 31 and a driving assembly 32 . The driving assembly 32 is connected to the pressing head 31 and can drive the pressing head 31 to move downward to press the connecting edge of the frame 1 and the top shell 2 .

[0030] Figure 5 Schematic diagram of the structure of the pressure head in the embodiment of the present invention.

[0031] like Figure 5 As shown, the pressure head 31 presses the gap at the connecting edge of the frame 1 and the top shell 2, and the pressure head 31 includes a fixing rod 311 and a pressure block 312. The fixing rod 311 and the pressure block 312 are movably connected. A plurality of pressure blocks 312 are evenly distributed on the fixing rod 311, and the pressure blocks 312 and the fixing rod 311 are movably connected, so that the plurality of pressure blocks 312 do not interfere with each other, which can improve the overall pressing effect of the pressure head 31, tightly press the connecting edge of the frame 1 and the top shell 2, improve the welding quality, and improve the sealing of the fuel cell.

[0032] A first telescopic hole 3121 is provided on the pressing block 312, a second telescopic hole 3111 matched with the first telescopic hole 3121 is provided on the fixing rod 311, a telescopic rod 313 is provided in the first telescopic hole 3121, one end of the telescopic rod 3131 is clamped in the first telescopic hole 3121, and the other end of the telescopic rod 313 is movably inserted in the second telescopic hole 3111, so that the telescopic rod 313 can be telescopically inserted on the fixing rod 311, so that the pressing head 31 can reciprocate toward the fixing rod 311, so that the pressing blocks 312 can press the connecting edges of the frame 1 and the top shell 2.

[0033] A plurality of pressing blocks 312 are evenly arranged on the fixing rod 311. In this embodiment, two first telescopic holes 3121 are arranged on the pressing block 312, and the two first telescopic holes 3121 are respectively located on both sides of the pressing block 312, and eight second telescopic holes 3111 corresponding to the first telescopic holes 3121 are evenly arranged on the fixing rod 311, so that four pressing blocks 312 can be arranged on the fixing rod 311, which increases the pressing area of ​​the pressing head 31, is conducive to improving the welding efficiency, and ensures the welding effect; each pressing block 312 is connected to the fixing rod 311 through two telescopic rods 313, which improves the reliability of the structure, can limit the pressing block 312, and prevent the pressing block 312 from deflecting, further improves the pressing effect of the pressing head 31 on the connecting edge of the frame 1 and the top shell 2, improves the welding quality, and improves the sealing of the fuel cell.

[0034] A pressing spring 314 is sleeved on the telescopic rod 313, and the pressing spring 314 is located between the pressing block 312 and the fixed rod 311, with one end of the pressing spring 314 abutting against the pressing block 312, and the other end of the pressing spring 314 abutting against the fixed rod 311. When the driving assembly 32 drives the pressing head 31 to move downward to press the connecting edge of the frame 1 and the top shell 2, the pressing spring 314 is in a compressed state, so that the four pressing blocks 312 on the fixed rod 311 can all press the connecting edge of the frame 1 and the top shell 2, thereby improving the pressing effect, which is conducive to avoiding the problem of poor pressing effect caused by assembly errors at the connecting edge of the frame 1 and the top shell 2.

[0035] A first limiting hole 3122 is provided on the pressing block 312, and a second limiting hole 3112 matched with the first limiting hole 3122 is provided on the fixing rod 311, and a limiting rod 315 is provided in the first limiting hole 3122, one end of the limiting rod 315 is clamped in the first limiting hole 3122, and the other end of the limiting rod 315 passes through the second limiting hole 3112, and a limiting protrusion 3151 is provided at the end of the limiting rod 315 away from the pressing block 312, and the limiting protrusion 3151 can prevent the limiting rod 315 from slipping out of the second limiting hole 3112, thereby avoiding the separation of the pressing block 312 and the fixing rod 311, thereby improving the reliability of the structure, and at the same time, the limiting rod 315 can further limit the pressing block 312 to prevent the pressing block 312 from deflecting, thereby further improving the pressing effect of the pressure head 31 on the connecting edge of the frame 1 and the top shell 2, improving the welding quality, and improving the sealing of the fuel cell.

[0036] A mounting rod 316 is provided on the fixing rod 311, one end of the mounting rod 316 is connected to the fixing rod 311, and a first mounting hole 3161 is provided on the end of the mounting rod 316 away from the fixing rod 311. The first mounting hole 3161 is set at one end of the mounting rod 316, which can facilitate installation and improve the stability of installation, prevent the pressure head 31 from shaking, improve the reliability of the structure, and further ensure the welding quality.

[0037] Figure 6 Schematic diagram of the structure of the driving component in the embodiment of the present invention.

[0038] like Figure 6 As shown, the driving assembly 32 includes a fixed bracket 321, a flip plate 322, a flip beam 323 and a driving cylinder 324. The fixed bracket 321 is arranged on the bottom plate 10, the flip plate 322 is arranged on the fixed bracket 321, the flip beam 323 is movably connected with the flip plate 322, the middle part of the flip beam 323 and the top end of the flip plate 322 are rotatably connected by hinged connection, and the driving cylinder 324 includes a cylinder body 3241 and a piston rod 3242, one end of the piston rod 3242 is movably arranged on the cylinder body In 3241, the other end of the piston rod 3242 is connected to one end of the flip beam 323, and the cylinder body 3241 is set on the fixed bracket 321, so that the driving cylinder 324 can drive the flip beam 323 to rotate, and the pressure head 31 is connected to the flip beam 323, which can drive the pressure head 31 to swing, so that the pressure head 31 can be pressed tightly on the connecting edge of the frame 1 and the top shell 2, ensuring that during the welding process, the gap between the connecting edges of the frame 1 and the top shell 2 is pressed, thereby improving the welding quality and the overall sealing of the fuel cell.

[0039] The driving assembly 32 is installed around the frame 1 through a fixed bracket 321. Since the pressing block 31 has a good pressing effect and each pressing rod 311 is provided with multiple pressing blocks 312, the driving assembly 32 can simultaneously drive multiple pressing blocks 312 to move downward to press the connecting edge of the frame 1 and the top shell 2. While the pressing effect is good, the arrangement of the driving assembly 32 can be reduced, so that the space around the frame 1 becomes larger, which is convenient for continuous routing of the welding gun during the welding process, improves the welding quality and the welding efficiency, and is beneficial to energy conservation and emission reduction and reduces energy consumption.

[0040] A second mounting hole 3231 matching the first mounting hole 3161 is provided at one end of the flip beam 323 away from the driving cylinder 324. Bolts are passed through the second mounting hole 3231 and the first mounting hole 3161. The mounting rod 316 and the flip beam 323 are connected by bolts, and the pressure head 31 and the driving assembly 32 are connected, so that the pressure head 31 is easily disassembled for repair and the stability of the structure is improved.

[0041] The support assembly 20 includes a support beam 21 and a support plate 22 arranged at one end of the support beam 21. The other end of the support beam 21 is arranged on the base plate 10. The support plate 22 can support the frame 1. The support beam 21 is evenly arranged on the base plate 10 to support the edges of the frame 1. The support plate 22 is provided with a limiting protrusion that is compatible with the edge of the frame 1, which can limit the frame 1, ensure the positioning accuracy of the frame 1 during the welding process, and improve the welding quality.

[0042] When the fuel cell shell is fixed by the fuel cell shell welding pressing device provided by the present invention, the pressing structure 30 is evenly arranged on the bottom plate 10 and located around the frame 1. The driving component 32 drives the pressure head 31 to press the connecting edge of the frame 1 and the top shell 2 to ensure the welding quality during the welding process and improve the sealing of the fuel cell. During the pressing process, the driving components 32 at the short sides of the frame 1 first drive the pressure head 31 to press, and then the driving components 32 at the long sides of the frame 1 drive the pressure head 31 to press, which can further improve the pressing effect and prevent the top shell 2 from bulging due to simultaneous downward pressure.

[0043] Functions and Effects of the Embodiments

[0044] The fuel cell shell welding pressing device provided by the present invention includes a base plate 10, a support assembly 20 and a pressing structure 30. The fuel cell shell includes a frame 1 and a top shell 2 arranged on the frame 1. There is a gap at the connection edge of the frame 1 and the top shell 2. The support assembly 20 is arranged on the base plate 10, and the frame 1 is placed on the support assembly 20. The support assembly 20 is used to support the frame 1 and limit the frame 1 to ensure the positioning accuracy during welding. The pressing structure 30 is arranged on the base plate 10 and distributed around the frame 1. The pressing structure 30 can tightly press the connection edge of the frame 1 and the top shell 2, improve the welding quality, and improve the sealing of the fuel cell. When the fuel cell shell is fixed by the fuel cell shell welding and pressing device provided by the present invention, the pressing structure 30 is evenly arranged on the bottom plate 10 and is located around the frame 1. The driving component 32 drives the pressure head 31 to press the connection edge of the frame 1 and the top shell 2 to ensure the welding quality during the welding process and improve the sealing of the fuel cell. During the pressing process, the driving components 32 at the short sides of the frame 1 first drive the pressure head 31 to press, and then the driving components 32 at the long sides of the frame 1 drive the pressure head 31 to press, which can further improve the pressing effect and prevent the top shell 2 from bulging due to simultaneous downward pressure. The fuel cell shell welding and pressing device provided by the present invention can press the connection edge of the frame and the top shell during the fuel cell shell welding process, improve the fuel cell shell welding effect, and improve the fuel cell shell overall sealing.

[0045] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A fuel cell housing welding pressing device, the fuel cell housing comprising a frame (1) and a top shell (2) arranged on the frame (1), a gap exists at the connection edge of the frame (1) and the top shell (2), characterized in that: The invention comprises a base plate (10), a supporting assembly (20) and a pressing structure (30), wherein the supporting assembly (20) is arranged on the base plate (10), the frame (1) is placed on the supporting assembly (20), and the pressing structure (30) is arranged on the base plate (10) and distributed around the frame (1).

2. The fuel cell casing welding pressing device according to claim 1, characterized in that: The pressing structure (30) comprises a pressing head (31), and the pressing head (31) presses the gap at the connecting edge of the frame (1) and the top shell (2).

3. The fuel cell casing welding pressing device according to claim 2, characterized in that: The pressing head (31) comprises a fixing rod (311) and a pressing block (312); the fixing rod (311) and the pressing block (312) are movably connected to each other, and a plurality of pressing blocks (312) are evenly arranged on the fixing rod (311).

4. The fuel cell casing welding pressing device according to claim 3, characterized in that: The pressing block (312) is provided with a first telescopic hole (3121), the fixing rod (311) is provided with a second telescopic hole (3111) matched with the first telescopic hole (3121), a telescopic rod (313) is provided in the first telescopic hole (3121), one end of the telescopic rod (313) is clamped in the first telescopic hole (3121), and the other end of the telescopic rod (313) is movably inserted into the second telescopic hole (3111).

5. The fuel cell casing welding pressing device according to claim 4, characterized in that: The telescopic rod (313) is sleeved with a pressing spring (314), and the pressing spring (314) is located between the pressing block (312) and the fixing rod (311).

6. The fuel cell casing welding pressing device according to claim 4, characterized in that: The pressing block (312) is provided with a first limiting hole (3122), the fixing rod (311) is provided with a second limiting hole (3112) matched with the first limiting hole (3122), a limiting rod (315) is provided in the first limiting hole (3122), one end of the limiting rod (315) is clamped in the first limiting hole (3122), the other end of the limiting rod (315) passes through the second limiting hole (3112), and a limiting protrusion (3151) is provided at one end of the limiting rod (315) away from the pressing block (312).

7. The fuel cell casing welding pressing device according to claim 6, characterized in that: The fixing rod (311) is provided with a mounting rod (316), and the mounting rod (316) is provided with a first mounting hole (3161).

8. The fuel cell casing welding pressing device according to claim 7, characterized in that: The pressing structure (30) includes a driving assembly (32) connected to the pressing head (31), the driving assembly (32) includes a fixed bracket (321), a flip plate (322), a flip beam (323) and a driving cylinder (324), the fixed bracket (321) is arranged on the bottom plate (10), the flip plate (322) is arranged on the fixed bracket (321), the flip beam (323) is movably connected to the flip plate (322), the driving cylinder (324) includes a cylinder body (3241) and a piston rod (3142), one end of the piston rod (3142) is movably arranged in the cylinder body (3241), the other end of the piston rod (3142) is connected to one end of the flip beam (323), and the cylinder body (3241) is arranged on the fixed bracket (321).

9. The fuel cell casing welding pressing device according to claim 8, characterized in that: A second mounting hole (3231) adapted to the first mounting hole (3161) is provided at one end of the flip beam (323) away from the driving cylinder (324), and bolts are inserted into the second mounting hole (3231) and the first mounting hole (3161).

10. The fuel cell casing welding pressing device according to any one of claims 1 to 9, characterized in that: The support assembly (20) comprises a support beam (21) and a support plate (22) arranged at one end of the support beam (21); the other end of the support beam (21) is arranged on the bottom plate (10).

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