Photovoltaic cell welding device for photovoltaic module manufacturing

Abstract

The photovoltaic cell welding device used in photovoltaic module manufacturing relates to the technical field of photovoltaic module welding equipment, including a support base, the support base is a horizontally grounded square base, a welding workbench is fixedly arranged above the support base, the welding workbench is a horizontally arranged square table, the support base is respectively provided with a conveying and feeding assembly, a welding strip arrangement assembly and a preheating assembly, and the welding workbench is respectively provided with a flip switching assembly and an induction welding assembly. The present invention solves the problems of low manual welding efficiency, inconvenient photovoltaic cell positioning and face-changing adjustment during mechanized welding, inconvenient arrangement of the convergence welding strip, and the inability to realize diversified welding processing due to limited functions of the welding mechanism when welding and assembling photovoltaic cells in the traditional technology.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic module welding equipment, and in particular to a photovoltaic cell welding device used for manufacturing photovoltaic modules. Background Art

[0002] Photovoltaic modules (also called solar panels) are one of the core parts of photovoltaic power generation systems.

[0003] Structurally, photovoltaic modules mainly include tempered glass, EVA film, photovoltaic cells, back panels, aluminum frames, junction boxes, connectors, etc. Among them, photovoltaic cells refer to semiconductor material components that can convert sunlight into electrical energy and are one of the key components of solar photovoltaic power generation systems.

[0004] In the application process, photovoltaic cells are usually connected in series or in parallel to form a photovoltaic cell group to increase the output voltage and current.

[0005] In terms of types, photovoltaic cells can be divided into three categories: polycrystalline silicon photovoltaic cells, monocrystalline silicon photovoltaic cells, and thin-film photovoltaic cells.

[0006] The manufacturing process of photovoltaic modules generally needs to go through several links such as welding, stacking, lamination, framing, junction box installation, curing and testing. Among them, the processing of photovoltaic cells is mainly concentrated in the welding link. The welding of photovoltaic modules mainly refers to connecting multiple cells in series by welding. The specific method is to first weld the busbar to the main grid line on the front (negative) of one photovoltaic cell, and then weld the extra welding ribbon to the main grid line on the back (positive) of the next photovoltaic cell to obtain a photovoltaic cell group. That is, the welding of photovoltaic modules includes two different processes: single welding and series welding. The busbar is a tin-plated copper strip, and its length is about twice the side length of the cell.

[0007] In the existing production process, the above photovoltaic cell welding process is mostly completed by workers using electric soldering irons and tin solder wires. The manual welding method will inevitably lead to low efficiency. If the existing welding equipment is used to weld the above photovoltaic cell and busbar, the following problems will arise:

[0008] 1. The welding clamp positioning and face-changing adjustment are inconvenient, resulting in reduced welding quality. Specifically, during the welding process, the busbar needs to be aligned with the main grid of the photovoltaic cell, so the setting of the clamping mechanism cannot hinder the arrangement and welding of the busbar; in addition, since the welding parts of the busbar and the photovoltaic cell are located on opposite planes of the two photovoltaic cells, and after the first single welding is completed, the photovoltaic cell needs to be turned over before the subsequent secondary series welding can be carried out, and turning over will cause the existing positioning reference to change, resulting in the problem of welding offset.

[0009] 2. Problems with the arrangement, length limitation and inconvenience of transfer of the busbar.

[0010] 3. The problem of inconvenient transportation and loading of photovoltaic cells.

[0011] 4. The existing welding mechanism has a single function and cannot realize the simultaneous processing of single welding and series welding.

[0012] In summary, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0013] In view of the defects in the prior art, the present invention provides a photovoltaic cell welding device for use in photovoltaic module manufacturing, which is used to solve the problems of low efficiency of manual welding when welding and assembling photovoltaic cells in traditional technologies, inconvenient positioning and face-changing adjustment of photovoltaic cells during mechanized welding, inconvenient arrangement of busbars, and inconvenient function of welding mechanism that cannot realize diversified welding processing.

[0014] To achieve the above object, the present invention provides the following technical solutions:

[0015] A photovoltaic cell welding device for photovoltaic module manufacturing includes a support base, which is a horizontally grounded square base. A welding workbench is fixedly arranged above the support base, and the welding workbench is a horizontally arranged square table. A conveying and loading component, a welding strip arrangement component and a preheating component are respectively arranged on the support base, and a flip switching component and an induction welding component are respectively arranged on the welding workbench.

[0016] As an optimized solution, four supporting vertical plates symmetrical in pairs are fixedly connected to the upper surface of the supporting base, and the upper end of each supporting vertical plate is respectively fixedly connected to the lower surface of the welding workbench.

[0017] As an optimized solution, a square turning opening is provided on the upper surface of the welding workbench, and two avoidance openings are respectively provided on the two longitudinal side walls of the welding workbench, and the two avoidance openings are respectively connected to the square turning opening.

[0018] As an optimized solution, a motor mounting groove is respectively opened at the center of each transverse outer end surface of the welding workbench, and the flip switching assembly includes two transversely symmetrical flip drive motors, and the two flip drive motors are respectively fixedly connected to the transverse inner groove surfaces of the two motor mounting grooves, and the output shaft end of each flip drive motor passes through the welding workbench and is fixedly connected with a flip clamp seat, and the two flip clamp seats are both U-shaped seats, and the middle parts of the two flip clamp seats are rotatably connected.

[0019] As an optimized solution, the induction welding components are rotationally symmetrically provided with two groups, each group of the induction welding components includes a horizontally arranged motor mounting plate, the motor mounting plate is fixedly connected to the longitudinal outer wall of the welding workbench, a steering drive motor is fixedly connected to the lower surface of the motor mounting plate, an output shaft end of the steering drive motor passes upward through the motor mounting plate and is fixedly connected to a circular turntable, and the circular turntable is arranged close to the upper surface of the motor mounting plate.

[0020] As an optimized solution, a vertical electric-controlled telescopic cylinder is fixedly connected to the center of the upper surface of each circular turntable, and the upper telescopic end of the electric-controlled telescopic cylinder is fixedly connected to a horizontal welding mounting plate. A high-frequency electromagnetic generator is fixed on the inner top surface of the welding mounting plate, and a power supply module is also fixed on the inner top surface of the welding mounting plate. The power supply module is arranged on one side of the high-frequency electromagnetic generator, and the power supply module is connected to the high-frequency electromagnetic generator for power supply.

[0021] As an optimized solution, the conveying and loading components are rotationally symmetrically provided with two groups, each group of the conveying and loading components includes two longitudinally symmetrical conveying splints, the lower ends of the two conveying splints are fixedly connected to the lateral side end faces of the support base, and a conveying drive motor is fixedly connected to the longitudinal outer wall of each conveying splint near the upper end, an active roller is rotatably provided between the two conveying splints, and the output shaft end of the conveying drive motor is fixedly connected to the side end face of the active roller.

[0022] As an optimized solution, two vertical supporting side plates are fixedly connected to the upper surface of the supporting base, and the supporting side plates are laterally arranged opposite to the conveying clamping plates. The supporting side plates are arranged on the outer side of the welding workbench, and a driven roller is rotatably provided between the supporting side plates and the longitudinal outer wall of the welding workbench. The driven roller and the active roller are at the same horizontal height, and a conveying belt is sleeved between the driven roller and the active roller.

[0023] As an optimized solution, each group of the conveying and loading components also includes a horizontal support plate, the horizontal support plate is fixedly connected to the longitudinal side wall of the support base, the upper surface of the horizontal support plate is fixedly connected with a vertical telescopic cylinder, the upper telescopic end of the vertical telescopic cylinder is fixedly connected with a square transfer seat, a horizontal telescopic cylinder is fixed in the square transfer seat, the telescopic end of the horizontal telescopic cylinder is fixedly connected with a transfer clamp seat, the transfer clamp seat is a C-shaped seat with a side opening, and the transfer clamp seat is arranged opposite to the avoidance opening.

[0024] As an optimized solution, the preheating assembly includes two square preheating tables, which are lifted and lowered in the square flipping mouth. Four hydraulic telescopic cylinders are fixedly connected to the upper surface of the support base corresponding to each of the square preheating tables. The upper telescopic ends of the hydraulic telescopic cylinders are fixedly connected to the lower surfaces of the square preheating tables. When the welding mounting plate is rotated to the longitudinal direction, the high-frequency electromagnetic generator and the square preheating table are in relative positions up and down.

[0025] As an optimized solution, the welding strip arrangement assembly includes a lifting pallet, which is arranged directly above one of the square preheating tables. The lifting pallet is a horizontally arranged T-shaped plate. Three lifting and telescopic cylinders are fixedly connected to the upper surface of the support base corresponding to the lifting pallet, and the upper telescopic end of each lifting and telescopic cylinder is respectively fixed to the side edge of the lower surface of the lifting pallet.

[0026] As an optimized solution, a laterally extending sliding limit opening is provided on the upper surface of the lifting support plate, a square sliding seat is clamped in the sliding limit opening, a sliding drive motor is fixedly connected to the upper surface of the lifting support plate, the sliding drive motor is arranged on one side of the sliding limit opening, a horizontal driving threaded rod is fixedly connected to the end of the output shaft of the sliding drive motor, and the driving threaded rod passes through and is threadedly connected to the square sliding seat.

[0027] As an optimized solution, a positioning seat is provided on the other side of the sliding limit opening, the positioning seat is fixedly connected to the upper surface of the lifting support plate, and the end of the driving threaded rod is rotatably supported on the positioning seat.

[0028] As an optimized solution, two longitudinally symmetrical fixed side plates are fixedly connected to the inner top surface of the lifting support plate close to the sliding drive motor, and two vertically symmetrical welding tape conveying wheels are rotatably arranged between the two fixed side plates. A rotating drive motor is respectively fixedly connected to the longitudinal outer end surface of each of the fixed side plates, and the output shaft end of the rotating drive motor passes through the fixed side plate and is fixedly connected to the corresponding side end surface of the welding tape conveying wheel.

[0029] As an optimized solution, the welding strip arrangement assembly also includes a fixed clamping seat and a movable clamping seat. The fixed clamping seat is arranged on one side of the two fixed side plates and is lifted and installed on the inner top surface of the lifting support plate. The movable clamping seat is lifted and installed on the lower surface of the square sliding seat.

[0030] As an optimized solution, the fixed clamping seat and the movable clamping seat are arranged with transverse openings, and electric clamps are respectively arranged in the fixed clamping seat and the movable clamping seat.

[0031] As an optimized solution, a shear frame is fixedly connected to the inner top surface of the lifting support plate, and the shear frame is arranged between the fixed clamping seat and the two fixed side panels. Two symmetrical cutting knives are telescopically provided on the inner top surface and inner bottom surface of the shear frame.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The conveying and loading assembly provided in the present invention can realize the conveying and loading of photovoltaic cells and the continuous transfer. Specifically, the conveying and loading assembly includes two conveying belts, and two photovoltaic cells are placed on the two conveying belts for horizontal transportation. After the photovoltaic cells are transported to a specific position, a transfer clamp is used to clamp one side of the photovoltaic cell, and it is driven to move longitudinally through the avoidance port, and then the flip clamp is used to receive and clamp the photovoltaic cell from the other side, thereby realizing the continuous transfer and loading of the photovoltaic cell.

[0034] The flip switching assembly provided in the present invention can realize the flipping of the photovoltaic cell during the welding process without changing the positioning reference. Specifically, the flip switching assembly includes two symmetrical flip clamping seats, which can clamp and position the ends of the photovoltaic cell, and the middle parts of the two flip clamping seats are rotated and docked. Each flip clamping seat can be flipped around an axis under the control of a flip driving motor to realize the switching of the welding position, thereby realizing the face-changing series welding of two photovoltaic cells without disassembling and reinstalling the photovoltaic cell.

[0035] The welding strip arrangement assembly provided in the present invention can realize the stretching, extension, length limitation and transfer arrangement of the busbar welding strip. Specifically, the welding strip arrangement assembly includes a horizontal lifting pallet, two fixed side plates are fixedly connected to one side of the lower surface of the lifting pallet, two welding strip conveying wheels are rotatably arranged between the two fixed side plates, and the busbar welding strip can be conveyed and unfolded by controlling the two welding strip conveying wheels to rotate in opposite directions. The welding strip arrangement assembly also includes a fixed clamping seat and a movable clamping seat, and the fixed clamping seat and the movable clamping seat are respectively provided with electric chucks, which can clamp the busbar welding strip, and pull the busbar welding strip to a certain length by controlling the movement of the movable clamping seat, and then use the cutting knife to cut the busbar welding strip to obtain a busbar welding strip of a specific length. After being cut off, the busbar welding strip is still clamped between the fixed clamping seat and the movable clamping seat, and the busbar welding strip can be transferred and attached to the front main grid line of one of the photovoltaic cells by controlling the fixed clamping seat and the movable clamping seat to descend synchronously.

[0036] The induction welding assembly provided in the present invention can first weld the busbar welding strip to one of the photovoltaic cells after the photovoltaic cells are conveyed and loaded and the busbar welding strip is arranged, and then use the flip switching assembly to flip the welded busbar welding strip and the photovoltaic cell to the other side, so as to transfer the unwelded part of the busbar welding strip to be attached to the back main grid line of another photovoltaic cell, and then use another group of induction welding assemblies to perform series welding connection, so as to realize the continuous single welding and series welding processes, and effectively improve the welding efficiency; in addition, the welding method adopted in the present invention is non-contact electromagnetic induction welding, which uses electromagnetic induction to generate welding heat source, so as to improve the welding speed and welding quality.

[0037] The preheating assembly provided in the present invention can preheat the lower part of the photovoltaic cell sheet using a square preheating table before induction welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0039] Figure 1 It is a schematic cross-sectional view of the internal structure of each component in the present invention in the main viewing direction;

[0040] Figure 2 It is a schematic cross-sectional view of the internal structure of each component in the present invention in a top view direction;

[0041] Figure 3 It is a schematic cross-sectional view of the internal structure of each component in the present invention in the side view direction;

[0042] Figure 4 It is a schematic diagram of the external overall structure of the present invention in the main viewing direction;

[0043] Figure 5 It is a schematic diagram of the external overall structure of the present invention in a top view;

[0044] Figure 6 It is a schematic diagram of the external overall structure of the present invention when viewed from the side.

[0045] In the figure: 1-support base, 2-welding workbench, 3-support vertical plate, 4-square flip opening, 5-conveying splint, 6-conveying drive motor, 7-active roller, 8-support side plate, 9-driven roller, 10-conveying belt, 11-avoidance opening, 12-horizontal support plate, 13-vertical telescopic cylinder, 14-square transfer seat, 15-horizontal telescopic cylinder, 16-transfer clamp seat, 17-motor mounting slot, 18-flip drive motor, 19-flip clamp seat, 20-motor mounting plate, 21-steering drive motor, 22-circular turntable , 23-electrically controlled telescopic cylinder, 24-welding mounting plate, 25-high frequency electromagnetic generator, 26-power supply module, 27-square preheating table, 28-hydraulic telescopic cylinder, 29-lifting support plate, 30-lifting telescopic cylinder, 31-sliding limit port, 32-square sliding seat, 33-sliding drive motor, 34-driving threaded rod, 35-positioning seat, 36-fixed side plate, 37-welding tape conveying wheel, 38-rotating drive motor, 39-fixed clamping seat, 40-movable clamping seat, 41-electric chuck, 42-cutting frame, 43-cutting knife. DETAILED DESCRIPTION

[0046] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0047] like Figures 1 to 6 As shown, a photovoltaic cell welding device for photovoltaic module manufacturing includes a support base 1, which is a horizontally grounded square base. A welding workbench 2 is fixedly provided above the support base 1, and the welding workbench 2 is a horizontally arranged square table. A conveying and loading component, a welding strip arrangement component and a preheating component are respectively provided on the support base 1, and a flip switching component and an induction welding component are respectively provided on the welding workbench 2.

[0048] Four supporting vertical plates 3 symmetrical in pairs are fixedly connected to the upper surface of the supporting base 1 , and the upper end of each supporting vertical plate 3 is fixedly connected to the lower surface of the welding workbench 2 .

[0049] A square turning opening 4 is provided on the upper surface of the welding workbench 2 .

[0050] Two groups of conveying and loading components are rotationally symmetrical, and each group of conveying and loading components includes two longitudinally symmetrical conveying splints 5. The lower ends of the two conveying splints 5 are fixedly connected to the lateral side end faces of the support base 1, and a conveying drive motor 6 is fixedly connected to the longitudinal outer wall near the upper end of each conveying splint 5. An active roller 7 is rotatably arranged between the two conveying splints 5, and the end of the output shaft of the conveying drive motor 6 is fixedly connected to the side end face of the active roller 7.

[0051] Two vertical supporting side plates 8 are fixedly connected to the upper surface of the supporting base 1. The supporting side plates 8 and the conveying clamping plates 5 are arranged horizontally opposite to each other. The supporting side plates 8 are arranged on the outer side of the welding workbench 2. A driven roller 9 is rotatably provided between the supporting side plates 8 and the longitudinal outer wall of the welding workbench 2. The driven roller 9 and the active roller 7 are at the same horizontal height. A conveying belt 10 is sleeved between the driven roller 9 and the active roller 7.

[0052] Two avoidance openings 11 are respectively provided on the longitudinal side walls of the welding workbench 2 corresponding to the two conveyor belts 10 , and the two avoidance openings 11 are respectively connected to the square turning openings 4 .

[0053] Each set of conveying and loading components also includes a horizontal support plate 12, which is fixedly connected to the longitudinal side wall of the support base 1. A vertical telescopic cylinder 13 is fixedly connected to the upper surface of the horizontal support plate 12, and an upper telescopic end of the vertical telescopic cylinder 13 is fixedly connected to a square transfer seat 14. A horizontal telescopic cylinder 15 is fixed in the square transfer seat 14, and a transfer clamp seat 16 is fixedly connected to the telescopic end of the horizontal telescopic cylinder 15. The transfer clamp seat 16 is a C-shaped seat with a side opening, and the transfer clamp seat 16 is arranged opposite to the avoidance opening 11.

[0054] A motor mounting groove 17 is respectively opened at the center of each transverse outer end surface of the welding workbench 2, and the flip switching assembly includes two transversely symmetrical flip drive motors 18, and the two flip drive motors 18 are respectively fixedly connected to the transverse inner groove surfaces of the two motor mounting grooves 17. The output shaft end of each flip drive motor 18 passes through the welding workbench 2 and is fixedly connected to a flip clamp seat 19. The two flip clamp seats 19 are both U-shaped seats, and the middle parts of the two flip clamp seats 19 are rotatably connected.

[0055] The induction welding assembly is arranged on one lateral side of the conveying and feeding assembly. Two groups of induction welding assemblies are rotationally symmetrical. Each group of induction welding assemblies includes a horizontally arranged motor mounting plate 20. The motor mounting plate 20 is fixedly connected to the longitudinal outer wall of the welding workbench 2. A steering drive motor 21 is fixedly connected to the lower surface of the motor mounting plate 20. The end of the output shaft of the steering drive motor 21 passes upward through the motor mounting plate 20 and is fixedly connected to a circular turntable 22. The circular turntable 22 is arranged close to the upper surface of the motor mounting plate 20.

[0056] A vertical electrically-controlled telescopic cylinder 23 is fixedly connected at the center of the upper surface of each circular turntable 22, and a horizontal welding mounting plate 24 is fixedly connected to the upper telescopic end of the electrically-controlled telescopic cylinder 23. A high-frequency electromagnetic generator 25 is fixed on the inner top surface of the welding mounting plate 24, and a power supply module 26 is also fixed on the inner top surface of the welding mounting plate 24. The power supply module 26 is arranged on one side of the high-frequency electromagnetic generator 25, and the power supply module 26 is connected to the high-frequency electromagnetic generator 25 for power supply.

[0057] The preheating assembly includes two square preheating tables 27, which are lifted and lowered in the square turning mouth 4. Four hydraulic telescopic cylinders 28 are fixedly connected to the upper surface of the support base 1 corresponding to each square preheating table 27, and the upper telescopic ends of the hydraulic telescopic cylinders 28 are fixedly connected to the lower surface of the square preheating table 27. When the welding mounting plate 24 is rotated to the longitudinal direction, the high-frequency electromagnetic generator 25 and the square preheating table 27 are in a relative position up and down.

[0058] The welding strip arrangement assembly includes a lifting pallet 29, which is arranged directly above one of the square preheating tables 27. The lifting pallet 29 is a horizontally arranged T-shaped plate. Three lifting and telescopic cylinders 30 are fixedly connected to the upper surface of the support base 1 corresponding to the lifting pallet 29, and the upper telescopic end of each lifting and telescopic cylinder 30 is respectively fixed to the side edge of the lower surface of the lifting pallet 29.

[0059] A laterally extending sliding limit opening 31 is provided on the upper surface of the lifting support plate 29, and a square sliding seat 32 is clamped in the sliding limit opening 31. A sliding drive motor 33 is fixedly connected to the upper surface of the lifting support plate 29, and the sliding drive motor 33 is arranged on one side of the sliding limit opening 31. A horizontal driving threaded rod 34 is fixedly connected to the end of the output shaft of the sliding drive motor 33, and the driving threaded rod 34 passes through and is threadedly connected to the square sliding seat 32. A positioning seat 35 is provided on the other side of the sliding limit opening 31. The positioning seat 35 is fixedly connected to the upper surface of the lifting support plate 29, and the end of the driving threaded rod 34 is rotatably supported on the positioning seat 35.

[0060] Two longitudinally symmetrical fixed side plates 36 are fixedly connected to the inner top surface of the lifting support plate 29 close to the sliding drive motor 33, and two vertically symmetrical welding tape conveying wheels 37 are rotatably arranged between the two fixed side plates 36. A rotating drive motor 38 is fixedly connected to the longitudinal outer end surface of each fixed side plate 36, and the output shaft end of the rotating drive motor 38 passes through the fixed side plate 36 and is fixedly connected to the side end surface of the corresponding welding tape conveying wheel 37.

[0061] The welding strip arrangement assembly also includes a fixed clamping seat 39 and a movable clamping seat 40. The fixed clamping seat 39 is arranged on one side of the two fixed side plates 36 and is installed on the inner top surface of the lifting support plate 29 for lifting. The movable clamping seat 40 is installed on the lower surface of the square sliding seat 32 for lifting.

[0062] The fixed clamping seat 39 and the movable clamping seat 40 are arranged with transverse openings, and electric clamps 41 are respectively arranged in the fixed clamping seat 39 and the movable clamping seat 40 .

[0063] A shear frame 42 is also fixedly connected to the inner top surface of the lifting support plate 29. The shear frame 42 is arranged between the fixed clamping seat 39 and the two fixed side plates 36. Two symmetrical cutting knives 43 are telescopically arranged on the inner top surface and the inner bottom surface of the shear frame 42.

[0064] When the present invention is used: first, two photovoltaic cells to be welded are placed on two conveyor belts 10 respectively, and four conveyor drive motors 6 are started respectively. The conveyor drive motor 6 drives the active roller 7 to rotate, and then drives the two conveyor belts 10 to roll in a circular manner, so as to convey the two photovoltaic cells to the outside of the two avoidance openings 11; the vertical telescopic cylinder 13 is controlled to extend, and the square transfer seat 14 is driven to move up to a position horizontally opposite to the photovoltaic cell, and the horizontal telescopic cylinder 15 is controlled to extend, and the transfer clamp 16 is used to clamp the photovoltaic cell from one side, and the feeding height of the photovoltaic cell is adjusted by controlling the vertical telescopic cylinder 13 to extend and retract again; two flipping drive motors 18 are started respectively, The two flip drive motors 18 respectively control the two flip clamping seats 19 to flip to a horizontal state, and make the open end of the flip clamping seat 19 face the photovoltaic cell; the horizontal telescopic cylinder 15 is controlled to extend, and the transfer clamping seat 16 is driven to move longitudinally, so that the end of the photovoltaic cell passes through the avoidance opening 11 and is adsorbed and clamped on the flip clamping seat 19; the two flip drive motors 18 are started again, and the two flip drive motors 18 respectively drive the two flip clamping seats 19 to flip 180°, so that the two photovoltaic cells are respectively opposite to the two square preheating tables 27 up and down; the hydraulic telescopic cylinder 28 is controlled to extend, and the square preheating table 27 is driven to rise to a position against the lower surface of the photovoltaic cell; respectively The two rotating drive motors 38 are started, and the rotating drive motors 38 drive the welding tape conveying wheel 37 to rotate, rotate and unfold the welding tape coated with flux and convey it horizontally, until the end of the welding tape passes through the shear frame 42, the fixed clamping seat 39 and the movable clamping seat 40 in sequence; the end of the welding tape is clamped by the electric clamp 41, and the sliding drive motor 33 is started. The sliding drive motor 33 drives the driving threaded rod 34 to rotate, and drives the square sliding seat 32 to slide horizontally along the sliding limit opening 31, so that the movable clamping seat 40 is away from the fixed clamping seat 39, and the welding tape is stretched and unfolded horizontally until the length of the welding tape between the fixed clamping seat 39 and the movable clamping seat 40 is greater than the width of the photovoltaic cell. times; control the two cutting knives 43 to extend and retract to cut the welding ribbon; synchronously control the fixed clamping seat 39 and the mobile clamping seat 40 to descend, and attach the cut welding ribbon to the front (negative) main grid line of one of the photovoltaic cells; start the steering drive motor 21, the steering drive motor 21 drives the circular turntable 22 to rotate, so that the high-frequency electromagnetic generator 25 is rotated to the top of the photovoltaic cell and the welding ribbon, and the square preheating table 27 is started to preheat the back of the photovoltaic cell for welding, and the electric control telescopic cylinder 23 is controlled to shorten, and the high-frequency electromagnetic generator 25 is driven to descend, and the high-frequency electromagnetic generator 25 is started at the same time, and the photovoltaic cell and the welding ribbon are non-contact welded by electromagnetic induction heating;After the single-section welding of the welding strip is completed, the flip drive motor 18 is started, and the flip clamp 19 drives the welded photovoltaic cell and the welding strip to flip 180 degrees, so that the two photovoltaic cells are moved to the same side. At this time, the unwelded part of the welding strip is attached to the back (negative) main grid line of the other photovoltaic cell. Similarly, another square preheating table 27 is used to preheat the front of the photovoltaic cell, and another set of induction welding components is used to perform contactless welding of the photovoltaic cell and the welding strip, thereby completing the series welding connection of the two photovoltaic cells. ;

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A photovoltaic cell welding device for photovoltaic module manufacturing, characterized in that: The invention comprises a support base (1), wherein the support base (1) is a square base horizontally grounded, a welding workbench (2) is fixedly provided above the support base (1), the welding workbench (2) is a horizontally arranged square table, a conveying and loading component, a welding strip arrangement component and a preheating component are respectively provided on the support base (1), and a flip switching component and an induction welding component are respectively provided on the welding workbench (2); Four supporting vertical plates (3) symmetrical in pairs are fixedly connected to the upper surface of the supporting base (1), and the upper end of each supporting vertical plate (3) is respectively fixedly connected to the lower surface of the welding workbench (2); The upper surface of the welding workbench (2) is provided with a square turning opening (4), and two avoidance openings (11) are respectively provided on two longitudinal side walls of the welding workbench (2), and the two avoidance openings (11) are respectively connected to the square turning opening (4); A motor mounting groove (17) is respectively formed at the center of each transverse outer end surface of the welding workbench (2); the flip switching assembly comprises two transversely symmetrical flip drive motors (18); the two flip drive motors (18) are respectively fixedly connected to the transverse inner groove surfaces of the two motor mounting grooves (17); the output shaft end of each flip drive motor (18) passes through the welding workbench (2) and is fixedly connected to a flip clamp seat (19); the two flip clamp seats (19) are both U-shaped seats; the middle parts of the two flip clamp seats (19) are rotatably connected; The induction welding components are rotationally symmetrically provided in two groups, each group of the induction welding components comprising a horizontally arranged motor mounting plate (20), the motor mounting plate (20) being fixedly connected to the longitudinal outer wall of the welding workbench (2), a steering drive motor (21) being fixedly connected to the lower surface of the motor mounting plate (20), an output shaft end of the steering drive motor (21) passing upward through the motor mounting plate (20) and being fixedly connected to a circular turntable (22), the circular turntable (22) being arranged closely against the upper surface of the motor mounting plate (20); A vertical electric-controlled telescopic cylinder (23) is fixedly connected at the center of the upper surface of each circular turntable (22); an upper telescopic end of the electric-controlled telescopic cylinder (23) is fixedly connected to a horizontal welding mounting plate (24); a high-frequency electromagnetic generator (25) is fixedly connected to the inner top surface of the welding mounting plate (24); a power supply module (26) is also fixedly connected to the inner top surface of the welding mounting plate (24); the power supply module (26) is arranged on one side of the high-frequency electromagnetic generator (25); and the power supply module (26) is connected to the high-frequency electromagnetic generator (25) for power supply.

2. The photovoltaic cell welding device for photovoltaic module manufacturing according to claim 1 is characterized in that: The conveying and loading components are rotationally symmetrically provided in two groups, each group of the conveying and loading components comprises two longitudinally symmetrical conveying clamps (5), the lower ends of the two conveying clamps (5) are fixedly connected to the lateral side end faces of the support base (1), and a conveying drive motor (6) is fixedly connected to the longitudinal outer wall near the upper end of each conveying clamp (5), and an active roller (7) is rotatably provided between the two conveying clamps (5), and the output shaft end of the conveying drive motor (6) is fixedly connected to the side end face of the active roller (7).

3. The photovoltaic cell welding device for photovoltaic module manufacturing according to claim 2 is characterized in that: Two vertical support side plates (8) are fixedly connected to the upper surface of the support base (1), the support side plates (8) and the conveying clamping plate (5) are arranged horizontally opposite to each other, the support side plates (8) are arranged on the outer side of the welding workbench (2), and a driven roller (9) is rotatably arranged between the support side plates (8) and the longitudinal outer wall of the welding workbench (2), the driven roller (9) and the active roller (7) are at the same horizontal height, and a conveying belt (10) is sleeved between the driven roller (9) and the active roller (7).

4. The photovoltaic cell welding device for photovoltaic module manufacturing according to claim 3 is characterized in that: Each group of the conveying and loading components also includes a horizontal support plate (12), the horizontal support plate (12) is fixedly connected to the longitudinal side wall of the support base (1), the upper surface of the horizontal support plate (12) is fixedly connected to a vertical telescopic cylinder (13), the upper telescopic end of the vertical telescopic cylinder (13) is fixedly connected to a square transfer seat (14), a horizontal telescopic cylinder (15) is fixed inside the square transfer seat (14), the telescopic end of the horizontal telescopic cylinder (15) is fixedly connected to a transfer clamp seat (16), the transfer clamp seat (16) is a C-shaped seat with a side opening, and the transfer clamp seat (16) is arranged directly opposite the avoidance opening (11).

5. The photovoltaic cell welding device for photovoltaic module manufacturing according to claim 1, characterized in that: The preheating assembly comprises two square preheating tables (27), the two square preheating tables (27) are arranged in a lifting manner in the square turning opening (4), the upper surface of the support base (1) is fixedly connected with four hydraulic telescopic cylinders (28) corresponding to each of the square preheating tables (27), the upper telescopic ends of the hydraulic telescopic cylinders (28) are fixedly connected to the lower surface of the square preheating tables (27), and when the welding mounting plate (24) is rotated to the longitudinal direction, the high-frequency electromagnetic generator (25) and the square preheating tables (27) are in a vertically opposite position.

6. The photovoltaic cell welding device for photovoltaic module manufacturing according to claim 5, characterized in that: The welding ribbon arrangement assembly comprises a lifting support plate (29), wherein the lifting support plate (29) is arranged directly above one of the square preheating tables (27), and the lifting support plate (29) is a horizontally arranged T-shaped plate. Three lifting telescopic cylinders (30) are fixedly connected to the upper surface of the support base (1) corresponding to the lifting support plate (29), and the upper telescopic end of each lifting telescopic cylinder (30) is respectively fixedly connected to the side edge of the lower surface of the lifting support plate (29).

7. The photovoltaic cell welding device for photovoltaic module manufacturing according to claim 6, characterized in that: The upper surface of the lifting support plate (29) is provided with a sliding limit opening (31) extending transversely, a square sliding seat (32) is clamped in the sliding limit opening (31), a sliding drive motor (33) is fixedly connected to the upper surface of the lifting support plate (29), the sliding drive motor (33) is arranged on one side of the sliding limit opening (31), a horizontal driving threaded rod (34) is fixedly connected to the end of the output shaft of the sliding drive motor (33), and the driving threaded rod (34) passes through and is threadedly connected to the square sliding seat (32); A positioning seat (35) is provided on the other side of the sliding limit opening (31); the positioning seat (35) is fixedly connected to the upper surface of the lifting support plate (29); and the end of the driving threaded rod (34) is rotatably supported on the positioning seat (35).

8. The photovoltaic cell welding device for photovoltaic module manufacturing according to claim 7, characterized in that: Two longitudinally symmetrical fixed side plates (36) are fixedly connected to the inner top surface of the lifting support plate (29) on the side close to the sliding drive motor (33); two vertically symmetrical welding tape conveying wheels (37) are rotatably arranged between the two fixed side plates (36); a rotating drive motor (38) is fixedly connected to the longitudinal outer end surface of each fixed side plate (36); and the output shaft end of the rotating drive motor (38) passes through the fixed side plate (36) and is fixedly connected to the corresponding side end surface of the welding tape conveying wheel (37).

9. The photovoltaic cell welding device for photovoltaic module manufacturing according to claim 8, characterized in that: The welding ribbon arrangement assembly further comprises a fixed clamping seat (39) and a movable clamping seat (40), wherein the fixed clamping seat (39) is arranged on one side of the two fixed side plates (36) and is installed on the inner top surface of the lifting support plate (29) in a lifting manner, and the movable clamping seat (40) is installed on the lower surface of the square sliding seat (32) in a lifting manner; The fixed clamping seat (39) and the movable clamping seat (40) are arranged with transverse openings, and electric clamps (41) are respectively arranged in the fixed clamping seat (39) and the movable clamping seat (40).

10. The photovoltaic cell welding device for photovoltaic module manufacturing according to claim 9, characterized in that: A shearing frame (42) is also fixedly connected to the inner top surface of the lifting support plate (29). The shearing frame (42) is arranged between the fixed clamping seat (39) and the two fixed side plates (36). Two symmetrical cutting knives (43) are respectively telescopically arranged on the inner top surface and inner bottom surface of the shearing frame (42).

Images