Photovoltaic panel busbar laser welding equipment based on accurate alignment structure

Abstract

The application discloses a photovoltaic panel busbar laser welding equipment based on a precise alignment structure, which comprises a supporting table, a support, a welding mechanism and a retaining assembly. The retaining assembly is provided with a retaining seat, a retaining piece, a pushing piece, and symmetrically arranged first and second hinged pieces and a sealing piece. The photovoltaic panel busbar laser welding equipment based on the precise alignment structure drives the smoke exhaust piece to move by moving down the welding mechanism, so that the retaining piece in the retaining assembly presses on the busbar, the position of the busbar is kept unchanged, and stable welding between the busbar and the electrode piece is realized. In addition, the spring can be compressed after the retaining piece is stressed, so that the retaining piece drives the sealing piece to shrink, the smoke exhaust pipe is kept in communication with the outside, and the smoke and dust generated during welding can be sucked in, the busbar can be prevented from being affected by a large suction force in the smoke exhaust piece when no pressure positioning is performed, the position of the busbar is prevented from being deviated, and thus the precise welding of the position of the busbar is ensured.

Description

Technical Field

[0001] This invention relates to welding technology, and more particularly to a laser welding device for photovoltaic panel busbars based on a precise alignment structure. Background Technology

[0002] Busbars are key conductive components in photovoltaic (PV) modules, primarily made of highly conductive materials (such as copper or aluminum). Their core function is to efficiently collect and transmit current. Connecting solar cells and improving current efficiency: PV modules consist of multiple solar cells connected in series. Busbars converge the current generated by these cells into a main current, ensuring efficient power transmission to the external circuit, thereby improving overall power generation efficiency. Simultaneously, by rationally distributing current, busbars prevent line overload, reduce the risk of short circuits or fires caused by overheating, and ensure stable system operation.

[0003] When welding equipment welds busbars to the electrode plates on battery cells, it generates some fumes. If workers inhale these fumes, it will cause harm to their health. In addition, long-term exposure to these fumes will cause a large amount of dust to accumulate on the surface of the equipment, affecting the normal use of the equipment and the factory environment. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention proposes a laser welding device for photovoltaic panel busbars based on a precise alignment structure.

[0005] A laser welding device for photovoltaic panel busbars based on a precise alignment structure includes: A support platform on which photovoltaic panels are placed, the photovoltaic panels being connected to each other via electrode plates, and busbars being provided on the electrode plates; A bracket is installed on the upper part of the support platform. The bracket is equipped with a cylinder and multiple welding mechanisms. The welding mechanisms move together with the bracket. Each welding mechanism includes a welding seat, a laser head, and a fume extraction device. The welding seat is installed on the bracket, the laser head is installed at the lower end of the welding seat, and the fume extraction device is connected to the welding seat through a connecting rod. The laser head is located in the upper middle part of the fume extraction device. The smoke exhaust component has a retaining assembly inside, which includes a retaining seat, a retaining member, a pushing member, and symmetrically arranged first hinge members, second hinge members, and sealing members. The retaining seat has symmetrically arranged mounting plates. One end of the first hinge member is hinged to the pushing member, and the other end is hinged to one end of the second hinge member. The middle of the second hinge member and the other end of the second hinge member are hinged to the mounting plate. The sealing member is mounted on the mounting plate in cooperation with the other end of the second hinge member. The smoke exhaust component has a mating hole inside that mates with the mounting plate. A fixing plate is provided in the middle of the smoke exhaust component. The retaining member passes through the retaining seat and the pushing member and is connected to the fixing plate. A spring is provided between the pushing member and the fixing plate.

[0006] In this invention, the smoke exhaust component consists of a guide pipe and symmetrically arranged smoke exhaust pipes. The guide pipe is provided with a connecting pipe, and the lower end of the smoke exhaust pipe is provided with a sliding port and a suction port.

[0007] In this invention, a first smoke exhaust hole and a second smoke exhaust hole are formed in the middle of the exhaust pipe. The inner diameter of the first smoke exhaust hole is larger than the inner diameter of the second smoke exhaust hole, and the first smoke exhaust hole is located at the upper end of the second smoke exhaust hole.

[0008] In this invention, the lower end of the second hinge member is provided with a first strip hole, the mounting plate is provided with an inclined portion, and the inclined portion is provided with a second strip hole that mates with the first strip hole.

[0009] In this invention, the inclined portion is further provided with a sliding groove, and the sealing member is provided with a sliding block that cooperates with the sliding groove.

[0010] In this invention, the sealing element consists of a first sealing plate and a second sealing plate. The first sealing plate is provided with symmetrically arranged hinge blocks, and the sliding block is disposed on the first sealing plate and between the symmetrically arranged hinge blocks.

[0011] In this invention, the retaining seat consists of a retaining disc and sealing blocks symmetrically arranged on the retaining disc, with an active area formed between the sealing blocks, and the sealing element disposed within the active area.

[0012] In this invention, the inner diameter of the sealing block is smaller than the diameter of the retaining disc, and the outer diameter of the sealing block is larger than the diameter of the retaining disc.

[0013] In this invention, the retaining member is composed of a first rod, a second rod, a third rod, and a retaining block from top to bottom. The fixing plate has a first through hole in the middle that mates with the first rod. The pushing member has a second through hole in the middle that mates with the second rod. The retaining seat has a third through hole in the middle that mates with the third rod. A nut is provided on the first rod.

[0014] The photovoltaic panel busbar laser welding equipment based on a precise alignment structure of this invention has the following beneficial effects: This equipment moves the welding mechanism downwards, causing the exhaust fan to move as well. This allows the retaining element in the retaining assembly to apply pressure to the busbar, keeping the busbar in place and achieving stable welding between the busbar and the electrode sheet. Furthermore, the retaining element can compress a spring after being stressed, causing the retaining element to contract the sealing element, maintaining communication between the exhaust fan and the outside, and drawing in the fumes generated during welding. This avoids the busbar being affected by the large suction force within the exhaust fan when not under pressure and positioned, preventing displacement of the busbar and ensuring precise welding of the busbar position. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the photovoltaic panel busbar laser welding equipment based on a precise alignment structure according to the present invention; Figure 2 for Figure 1 A schematic diagram of the welding mechanism, electrode plates, and busbar structure. Figure 3 for Figure 2 Exploded view of the smoke exhaust components and retaining assembly structure in the middle; Figure 4 for Figure 3 Perspective view of the smoke exhaust component structure in the middle; Figure 5 for Figure 3 A schematic diagram of the retaining component structure; Figure 6 for Figure 5 A schematic diagram of the structure in another direction; Figure 7 for Figure 6 The main view; Figure 8 for Figure 5 Exploded view; Figure 9 for Figure 8 A schematic diagram of the structure of the seal, mounting plate, spring, pusher, first hinge, and second hinge in the middle; Figure 10 for Figure 9 A schematic diagram of the retainer structure in the middle; Figure 11 for Figure 10 A schematic diagram of the structure in another direction; Figure 12 This is a schematic diagram of the exhaust pipe and retaining assembly structure in this invention; Figure 13 This is a schematic diagram of the exhaust pipe, fixing plate, retaining member, sealing member, mounting plate, spring, pushing member, first hinge member and second hinge member in this invention.

[0016] In the diagram: 1. Support platform; 2. Bracket; 3. Welding mechanism; 4. Holding assembly; 5. Electrode plate; 6. Busbar; 7. Cylinder; 8. Laser head; 9. Fume exhaust component; 10. Welding seat; 11. Connecting rod; 12. Guide tube; 13. Fume exhaust pipe; 14. Connecting pipe; 15. Sliding port; 16. Suction port; 17. Holding block; 18. Guide block; 19. Plug; 20. Nut; 21. Holding component; 22. First fume exhaust hole; 23. Second fume exhaust hole; 24. Holding seat; 25. Moving area; 26. Fume exhaust channel; 27. Sealing component; 28. Sealing surface; 29. ​​Pushing component; 30. First hinge component; 31. Second hinge component. 1. Mounting plate 32, second strip hole 33, first strip hole 34, mating hole 35, fixing plate 36, spring 37, hinge seat 38, first hinge rod 39, second hinge rod 40, third hinge rod 41, fourth hinge rod 42, sliding block 43, hinge block 44, inclined part 45, sliding groove 46, first sealing plate 47, second sealing plate 48, movable gap 49, retaining plate 50, sealing block 51, first rod body 52, second rod body 53, third rod body 54, first through hole 55, second through hole 56, third through hole 57, arc surface 58. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] like Figures 1 to 13 As shown, the photovoltaic panel busbar laser welding equipment based on a precise alignment structure of the present invention includes a support platform 1, a bracket 2, a welding mechanism 3, and a holding component 4. The support platform 1 supports the photovoltaic panel (not shown in the figure). At this time, the photovoltaic panels are connected as a single unit by electrode plates 5. A transfer mechanism with a suction cup structure picks up the photovoltaic panel and transfers it to the support platform 1. Then, a placement mechanism places the pre-cut busbar 6 onto the edge of the photovoltaic panel, positioned above the electrode plates 5, ensuring contact between the busbar 6 and the electrode plates 5 on the photovoltaic panel. The bracket 2 then moves the welding mechanism 3 to the upper end of the support platform 1, and a cylinder 7 pushes the bracket 2 downwards, causing the holding component 4, located below the laser head 8, to apply pressure and position the busbar 6, ensuring stability between the busbar 6 and the electrode plates 5. This prevents the busbar 6 from shifting during laser welding, thus avoiding tilting after welding.

[0019] Other structures in this application are not shown in the accompanying drawings and can be derived from existing technologies, so they will not be elaborated upon in this application.

[0020] A photovoltaic panel is placed on the support platform 1. The photovoltaic panels are connected to each other by electrode plates 5. Busbars 6 are installed on the electrode plates 5, and the busbars 6 are kept perpendicular to the electrode plates 5.

[0021] The bracket 2 is located on the upper end of the support platform 1. The bracket 2 is equipped with a cylinder 7, which is used to move the bracket 2 up and down, thereby changing the position of the laser head 8 and the fume extractor 9. The bracket 2 is equipped with multiple welding mechanisms 3, which move together with the bracket 2. Each welding mechanism 3 includes a welding seat 10, a laser head 8, and a fume extractor 9. The welding seat 10 is located on the bracket 2, the laser head 8 is located at the lower end of the welding seat 10, and the fume extractor 9 is connected to the welding seat 10 via a connecting rod 11. The laser head 8 is located in the upper middle part of the fume extractor 9.

[0022] The smoke exhaust component 9 consists of a guide pipe 12 and symmetrically arranged smoke exhaust pipes 13. A connecting pipe 14 is provided on the guide pipe 12. The lower end of each smoke exhaust pipe 13 has a sliding port 15 and a suction port 16. The sliding port 15 engages with a retaining block 17, allowing the retaining block 17 to slide up and down. The suction port 16 is used to draw in smoke. A guide block 18 connects the two smoke exhaust pipes 13, converging the smoke, and then connects to a flexible hose via the connecting pipe 14. The flexible hose connects to a blower. A plug 19 is provided at the upper end of each smoke exhaust pipe 13. The plug 19 blocks the upper end of the smoke exhaust pipe 13 and allows it to be removed when installing the retaining assembly 4, facilitating the rotation of the nut 20 to connect with the retaining member 21.

[0023] A first smoke exhaust hole 22 and a second smoke exhaust hole 23 are formed in the middle of the smoke exhaust pipe 13. The inner diameter of the first smoke exhaust hole 22 is larger than the inner diameter of the second smoke exhaust hole 23, and the first smoke exhaust hole 22 is located at the upper end of the second smoke exhaust hole 23. A smoke exhaust channel 26 is formed between the movable area 25 of the retaining seat 24 and the inner wall of the second smoke exhaust hole 23. The smoke exhaust channel 26 is sealed by a sealing element 27.

[0024] The connection between the first smoke vent 22 and the second smoke vent 23 forms a sealing surface 28. When the upper end of the sealing member 27 contacts the sealing surface 28, the sealing member 27 separates the first smoke vent 22 and the second smoke vent 23, keeping them from communicating. When the sealing member 27 does not contact the sealing surface 28, the first smoke vent 22 and the second smoke vent 23 remain connected. The blower can drive the airflow inside the smoke exhaust member 9 to attract the smoke generated during laser welding.

[0025] The smoke exhaust component 9 is equipped with a retaining assembly 4, which includes a retaining seat 24, a retaining member 21, a pushing member 29, and symmetrically arranged first hinge member 30, second hinge member 31, and sealing member 27. The retaining assembly 4 can apply pressure to position the manifold 6 and can also block the smoke exhaust pipe 13. When the retaining member 21 is not acting on the manifold 6, the smoke exhaust channel 26 is in a closed state, while when the retaining member 21 is acting on the manifold 6, the smoke exhaust channel 26 is in an open state, so that the smoke generated during laser welding can be attracted at any time.

[0026] The retaining seat 24 is provided with symmetrically arranged mounting plates 32, which are vertically arranged to restrict the sliding of the sealing member 27, allowing it to slide along the trajectory of the second strip hole 33. At the same time, the second strip hole 33 can also cooperate with the first strip hole 34 on the second hinge member 31 to realize the angle change of the second hinge member 31.

[0027] One end of the first hinge member 30 is hinged to the pusher member 29, and the other end is hinged to one end of the second hinge member 31. The middle part of the second hinge member 31 and the other end of the second hinge member 31 are hinged to the mounting plate 32. The sealing member 27 is fitted onto the mounting plate 32 with the other end of the second hinge member 31. The interior of the smoke exhaust member 9 is provided with a mating hole 35 that mates with the mounting plate 32. The mounting plate 32 and the fixing plate 36 are connected through the mating hole 35. The fixing plate 36 is located in the middle of the smoke exhaust member 9. The retainer member 21 passes through the retainer seat 24 and the pusher member 29 and is connected to the fixing plate 36. A spring 37 is provided between the pusher member 29 and the fixing plate 36.

[0028] The pusher 29 is provided with a hinge seat 38, which is hinged to the first hinge member 30 through a first hinge rod 39. The first hinge member 30 and the second hinge member 31 are hinged to each other through a second hinge rod 40. The middle of the second hinge member 31 is hinged to the mounting plate 32 through a third hinge rod 41. The lower end of the second hinge member 31 is hinged to the seal member 27 through a fourth hinge rod 42. The fourth hinge rod 42 is disposed in the first strip hole 34 and the second strip hole 33, and is also mounted on the sliding block 43 and the hinge block 44.

[0029] The lower end of the second hinge 31 is provided with a first strip-shaped hole 34, and the mounting plate 32 is provided with an inclined portion 45, on which a second strip-shaped hole 33 is provided to mate with the first strip-shaped hole 34. The inclined portion 45 is also provided with a sliding groove 46, and the sealing member 27 is provided with a sliding block 43 that mates with the sliding groove 46. Through the cooperation of the sliding block 43 and the sliding groove 46, the sealing member 27 slides along the inclined direction of the sliding groove 46, so that when the sealing member 27 moves in the smoke exhaust channel 26, it moves in an inclined state, which keeps the smoke exhaust channel 26 open or closed.

[0030] The sealing element 27 consists of a first sealing plate 47 and a second sealing plate 48. The first sealing plate 47 has symmetrically arranged hinge blocks 44, and a sliding block 43 is disposed on the first sealing plate 47, positioned between the symmetrically arranged hinge blocks 44. The arc angle of the second sealing plate 48 is greater than that of the first sealing plate 47, thus making the arc angle of the second sealing plate 48 greater than that of the movable area 25. The arc angle of the first sealing plate 47 matches the arc angle of the movable area 25.

[0031] There is a movable gap 49 between the second sealing plate 48 and the retaining seat 24. When the movable gap 49 exists, the sealing element 27 does not contact the sealing surface 28. When the movable gap 49 disappears, the sealing element 27 contacts the sealing surface 28.

[0032] The retaining seat 24 consists of a retaining plate 50 and sealing blocks 51 symmetrically arranged on the retaining plate 50. An active area 25 is formed between the sealing blocks 51 and the sealing element 27 is disposed within the active area 25.

[0033] The inner diameter of the sealing block 51 is smaller than the diameter of the retaining plate 50, and the outer diameter of the sealing block 51 is larger than the diameter of the retaining plate 50. Therefore, the sealing block 51 will contact the inner wall of the second smoke exhaust hole 23, and two smoke exhaust channels 26 located in the active area 25 will be reserved for smoke to be drawn in.

[0034] The retaining member 21 is composed of a first rod 52, a second rod 53, a third rod 54, and a retaining block 17 from top to bottom. The fixing plate 36 has a first through hole 55 in the middle that mates with the first rod 52. The pushing member 29 has a second through hole 56 in the middle that mates with the second rod 53. The retaining seat 24 has a third through hole 57 in the middle that mates with the third rod 54. A nut 20 is provided on the first rod 52. The diameter of the first rod 52 is smaller than the diameter of the second rod 53, and the diameter of the second rod 53 is smaller than the diameter of the third rod 54. The retaining block 17 has an arc-shaped surface 58 that mates with the inner wall of the second exhaust pipe 13.

[0035] like Figure 12 and 13 As shown, at this time, the retaining member 21 acts on the busbar 6. The retaining member 21 is subjected to the reverse force of the busbar 6, compressing the spring 37. The retaining member 21 drives the pushing member 29 to compress the spring 37, and the pushing member 29 moves upward, causing the first hinge member 30 to move upward. The first hinge member 30 drives one end of the second hinge member 31 to move upward, causing the end with the first strip hole 34 to move downward. Thus, through the cooperation of the fourth hinge rod 42 and the second strip hole 33, the sealing member 27 moves obliquely along the inclined trajectory of the sliding groove 46. The sealing member 27 is kept separated from the sealing surface 28, the smoke exhaust channel 26 is opened, and the movable gap 49 is also opened. While the retaining component 4 applies pressure to position the busbar 6, the smoke exhaust channel 26 is kept open, so that strong winds will not affect the position of the busbar 6 and maintain the welding accuracy between the busbar 6 and the electrode plate 5.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser welding equipment for photovoltaic panel busbars based on a precise alignment structure, characterized in that, include: A support platform on which photovoltaic panels are placed, the photovoltaic panels being connected to each other via electrode plates, and busbars being provided on the electrode plates; A bracket is installed on the upper part of the support platform. The bracket is equipped with a cylinder and multiple welding mechanisms. The welding mechanisms move together with the bracket. Each welding mechanism includes a welding seat, a laser head, and a fume extraction device. The welding seat is installed on the bracket, the laser head is installed at the lower end of the welding seat, and the fume extraction device is connected to the welding seat through a connecting rod. The laser head is located in the upper middle part of the fume extraction device. The smoke exhaust component has a retaining assembly inside, which includes a retaining seat, a retaining member, a pushing member, and symmetrically arranged first hinge members, second hinge members, and sealing members. The retaining seat has symmetrically arranged mounting plates. One end of the first hinge member is hinged to the pushing member, and the other end is hinged to one end of the second hinge member. The middle of the second hinge member and the other end of the second hinge member are hinged to the mounting plate. The sealing member is mounted on the mounting plate in cooperation with the other end of the second hinge member. The smoke exhaust component has a mating hole inside that mates with the mounting plate. A fixing plate is provided in the middle of the smoke exhaust component. The retaining member passes through the retaining seat and the pushing member and is connected to the fixing plate. A spring is provided between the pushing member and the fixing plate. The smoke exhaust device consists of a guide pipe and symmetrically arranged smoke exhaust pipes. The guide pipe is provided with a connecting pipe, and the lower end of the smoke exhaust pipe is provided with a sliding port and a suction port. The exhaust pipe has a first exhaust hole and a second exhaust hole in the middle. The inner diameter of the first exhaust hole is larger than the inner diameter of the second exhaust hole, and the first exhaust hole is located at the upper end of the second exhaust hole. The retaining member is composed of a first rod, a second rod, a third rod, and a retaining block from top to bottom. The fixing plate has a first through hole in the middle that mates with the first rod. The pushing member has a second through hole in the middle that mates with the second rod. The retaining seat has a third through hole in the middle that mates with the third rod. A nut is provided on the first rod.

2. The photovoltaic panel busbar laser welding equipment based on a precise alignment structure according to claim 1, characterized in that, The lower end of the second hinge is provided with a first strip hole, and the mounting plate is provided with an inclined portion, on which a second strip hole is provided that mates with the first strip hole.

3. The photovoltaic panel busbar laser welding equipment based on a precise alignment structure according to claim 2, characterized in that, The inclined portion is also provided with a sliding groove, and the sealing element is provided with a sliding block that cooperates with the sliding groove.

4. The photovoltaic panel busbar laser welding equipment based on a precise alignment structure according to claim 3, characterized in that, The sealing element consists of a first sealing plate and a second sealing plate. The first sealing plate is provided with symmetrically arranged hinge blocks. The sliding block is disposed on the first sealing plate and between the symmetrically arranged hinge blocks.

5. The photovoltaic panel busbar laser welding equipment based on a precise alignment structure according to claim 1, characterized in that, The retaining seat consists of a retaining disc and sealing blocks symmetrically arranged on the retaining disc, with an active area formed between the sealing blocks, and the sealing element disposed within the active area.

6. The photovoltaic panel busbar laser welding equipment based on a precise alignment structure according to claim 5, characterized in that, The inner diameter of the sealing block is smaller than the diameter of the retaining disc, and the outer diameter of the sealing block is larger than the diameter of the retaining disc.

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