Laser welding mechanism and laser welding machine

Abstract

The utility model relates to a laser welding mechanism which comprises a welding mechanism which comprises a two-shaft driving assembly and a welding assembly connected to the output end of the two-shaft driving assembly, and the two-shaft driving assembly can drive the welding assembly in the first direction and the second direction. The crimping mechanism comprises a first driving assembly and one or more crimping assemblies connected to the output end of the first driving assembly, the first driving assembly can drive the crimping assemblies in the first direction, and the crimping assemblies can crimp the junction box to be welded in the second direction; and the camera is connected with the first driving assembly. Through the arrangement, all junction boxes can be welded in sequence, automatic laser welding is achieved, the assembly efficiency is improved, all positions can be welded, the operation difficulty is reduced, the welding effect is automatically detected through the camera, and the welding efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic module welding field especially is a kind of laser welding mechanism and laser welding machine. BACKGROUND

[0002] Photovoltaic junction box is the connecting device between solar cell array formed by solar cell module and solar charging control device, and its main function is to connect and protect solar photovoltaic module, connect the power generated by solar cell with external circuit, and conduct the current generated by photovoltaic module. In the production and manufacturing process of photovoltaic module, one of the processes is to assemble the junction box to the bus bar on the photovoltaic panel, and then weld the bus bar on the junction box. Heterojunction perovskite laminated cell is a new generation of photovoltaic cell after crystalline silicon cell and thin film cell. Because the stability of perovskite photovoltaic module is weaker than that of crystalline silicon photovoltaic module, the perovskite material of light absorption layer is easy to decompose under water and oxygen conditions, resulting in battery failure, so the welding effect of junction box is required to be higher.

[0003] At present, photovoltaic junction box is mostly assembled by hand by workers during assembly, and workers need to operate and check the welding effect at each station. Manual welding has high operation difficulty and low welding efficiency, which affects the welding efficiency. UTILITY MODEL CONTENT

[0004] Therefore, the utility model solves the problems of high operation difficulty and low welding efficiency in manual welding in the prior art, and provides a laser welding mechanism and a laser welding machine.

[0005] To solve the above technical problems, the utility model provides a laser welding mechanism, which comprises:

[0006] The welding mechanism comprises a two-axis driving assembly and a welding assembly connected to the output end of the two-axis driving assembly, and the two-axis driving assembly can drive the welding assembly in a first direction and a second direction.

[0007] The crimping mechanism comprises a first driving assembly and one or more crimping assemblies connected to the output end of the first driving assembly, and the first driving assembly can drive the crimping assembly in a first direction, and the crimping assembly can crimp the junction box to be welded in a second direction.

[0008] A camera is connected to the first driving assembly.

[0009] In one embodiment of the utility model, the output end of the first driving assembly is connected with a second driving assembly, the crimping assembly is connected with the second driving assembly, and the second driving assembly can drive the crimping assembly in a third direction.

[0010] In one embodiment of the utility model, the crimping mechanism further comprises a support, the support is connected to the output end of the first driving assembly, the second driving assembly is installed on the support, and the height of the support along the second direction is lower than the height of the welding assembly.

[0011] In one embodiment of the utility model, the two-axis driving assembly comprises a third driving assembly and a fourth driving assembly for driving the welding assembly along the first direction and the second direction respectively, and the fourth driving assembly is connected to the output end of the third driving assembly.

[0012] In one embodiment of the utility model, the crimping assembly comprises a fifth driving assembly and a pressure head, the fifth driving assembly is connected to the output end of the second driving assembly, and the pressure head is connected to the output end of the fifth driving assembly.

[0013] In one embodiment of the utility model, one side of the crimping assembly is provided with a light source.

[0014] In one embodiment of the utility model, the light source is connected to the output end of the second driving assembly, and the light source is provided with a light shield.

[0015] In one embodiment of the utility model, the welding assembly comprises a laser generation unit, an optical path unit and a laser head, the output end of the optical path unit is connected to the input end of the optical path unit, and the output end of the optical path unit is connected to the input end of the mechanism head.

[0016] In one embodiment of the utility model, the laser welding device further comprises a support frame, the first driving assembly and the third driving assembly are arranged on the support frame, and the center lines of the first driving assembly and the third driving assembly are parallel.

[0017] The utility model further provides a laser welding machine comprising the laser welding mechanism.

[0018] Compared with the prior art, the above technical scheme of the utility model has the following advantages:

[0019] The utility model discloses a laser welding mechanism, through two axle drive subassembly is used for driving the independent or joint operation of welding assembly along the first direction and the second direction, make welding assembly close the junction box of waiting to weld and carry out welding. And laser welding mechanism and pressure welding mechanism independent control. The camera moves in the first direction with the first drive subassembly, identifies the position that needs to weld, and when having a plurality of waiting to weld junction boxes on the same photovoltaic module, through a plurality of pressure welding mechanism can respectively move to the corresponding waiting to weld junction box, to the synchronous pressure welding of a plurality of junction boxes on the same photovoltaic module, improve the position stability of junction box to improve the welding accuracy, through two axle drive subassembly and the independent setting of first drive piece, after the pressure welding assembly fixes the junction box, the welding assembly can weld every junction box in turn, realizes automatic laser welding and improves assembly efficiency, can weld everywhere and reduces the operation difficulty, through the camera automatic detection welding effect, further improves the welding efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the content of the utility model more easily be clearly understood, the following according to the specific embodiment of the utility model and combining with the drawings, the utility model is further detailed, wherein

[0021] Figure 1 It is the structure diagram of the utility model welding mechanism Figure 1 ;

[0022] Figure 2 It is the structure diagram of the utility model pressure welding mechanism;

[0023] Figure 3 It is the structure diagram of the utility model welding mechanism Figure 2 。

[0024] Description of the drawings reference sign: 1, first drive subassembly;2, third drive subassembly;3, fourth drive subassembly;4, laser generation unit;5, light path unit;6, laser head;8, pressure welding assembly;9, light shield;10, support frame;11, second drive subassembly;12, light source;13, pressure head;14, fifth drive subassembly. DETAILED DESCRIPTION

[0025] The utility model is further explained in connection with the drawings and specific embodiment, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model. EMBODIMENT

[0026] Refer to Figures 1-3 As shown, comprising:

[0027] The welding mechanism comprises a two-axis driving assembly and a welding assembly connected to the output end of the two-axis driving assembly, and the two-axis driving assembly can drive the welding assembly in a first direction and a second direction.

[0028] The crimping mechanism comprises a first driving assembly 1 and one or more crimping assemblies 8 connected to the output end of the first driving assembly 1, the first driving assembly 1 can drive the crimping assemblies 8 in a first direction, and the crimping assemblies 8 can crimp the to-be-welded junction boxes in a second direction.

[0029] A camera is connected to the first driving assembly 1.

[0030] The laser welding mechanism drives one or more crimping assemblies 8 to the upper side of one or more to-be-welded junction boxes by the first driving assembly 1, and fixes each to-be-welded junction box by one or more crimping assemblies 8. The two-axis driving assembly is used for driving the welding assembly to independently or jointly move in the first direction and the second direction, so that the welding assembly moves to the upper side of the to-be-welded junction box in the first direction and moves close to the to-be-welded junction box in the second direction, thereby welding the junction box by the welding assembly. The position of the laser welding assembly is driven and controlled by the two-axis driving assembly, and the position of one or more crimping assemblies 8 is driven and controlled by the first driving assembly 1, so that the laser welding mechanism and the crimping mechanism are independently controlled. The camera moves in the first direction with the first driving assembly 1, identifies the position to be welded, and when there are multiple to-be-welded junction boxes on the same photovoltaic assembly, the multiple crimping mechanisms can move to the corresponding to-be-welded junction boxes, simultaneously crimp the multiple junction boxes on the same photovoltaic assembly, prevent the single crimping point from causing the photovoltaic assembly to warp, improve the position stability of the junction box and the welding precision, and independently set the two-axis driving assembly and the first driving assembly, so that the welding assembly can weld each junction box in turn after the junction box is fixed by the crimping assembly 8.

[0031] The camera can select an industrial CCD camera or a CMOS camera. The CCD camera has the advantages of high resolution, low noise, high sensitivity, etc., and is suitable for clear imaging of the welding and crimping parts under low light conditions. The CMOS camera has the characteristics of low cost, low power consumption and high frame rate, and has an advantage in rapid dynamic monitoring of the welding and crimping process. Through the camera, it can also identify whether the to-be-welded position has a junction box, and whether the welding position is clean and tidy. The camera is connected with the identification unit and the detection unit, and feedbacks through the control unit and the alarm unit, to ensure the welding effect of the heterojunction perovskite stacked battery and the junction box. Whether the crimping assembly 8 is accurately crimped on the junction box is observed, including whether the position and angle of crimping are correct. During the welding process, the camera can monitor the welding position in real time, such as checking whether the welding point is formed well, whether there are welding defects such as virtual welding and missed welding, etc., and also can monitor whether there are splashes and other abnormal conditions during the welding process.

[0032] Referring to Figure 1 , Figure 3 , the output end of the first driving assembly 1 is connected with a second driving assembly 11, the crimping assembly 8 is connected with the second driving assembly 11, and the second driving assembly 11 can drive the crimping assembly 8 along a third direction. Through cooperation of the first driving assembly 1 and the second driving assembly 11, the crimping assembly 8 can be moved to different positions in the plane.

[0033] Referring to Figure 3 , the crimping mechanism further includes a bracket, the bracket is connected to the output end of the first driving assembly 1, and the second driving assembly 11 is installed on the bracket. The height of the bracket along the second direction is lower than the height of the welding assembly. The height of the bracket is lower than the height of the welding assembly, which can avoid interference between the crimping mechanism and the welding assembly in the movement path space during the welding and crimping operation, improve the compactness and working efficiency of the entire laser welding mechanism, and ensure that the welding and crimping operation is more smooth.

[0034] Referring to Figure 1 , the two-axis driving assembly includes a third driving assembly 2 and a fourth driving assembly 3 for driving the welding assembly along a first direction and a second direction, respectively. The fourth driving assembly 3 is connected to the output end of the third driving assembly 2, to realize independent control or simultaneous control of the movement of the welding assembly along the first direction and the second direction.

[0035] Referring to Figure 3As shown, the crimping assembly 8 includes a fifth drive assembly 14 and a crimping head 13. The fifth drive assembly 14 is connected to the output end of the second drive assembly 11, and the crimping head 13 is connected to the output end of the fifth drive assembly 14. The first drive assembly 1, the second drive assembly 11, the third drive assembly 2, the fourth drive assembly 3, and the fifth drive assembly 14 all adopt linear motors, cylinders, or hydraulic cylinders. In this embodiment, a linear motor is selected for higher adjustment accuracy. The crimping head 13 is driven to press down by the fifth drive assembly 14. During the pressing process, pressure is applied after the crimping head 13 contacts the surface of the junction box. During the welding process, the crimping head 13 maintains a stable crimping state to fix the position of the junction box until the welding operation is completed.

[0036] Reference Figure 2 As shown, a light source 12 is provided on one side of the crimping assembly 8 to provide better visibility during the crimping operation. When crimping the junction box on the photovoltaic module, the ambient light around the junction box may be insufficient due to the junction box's own structure or the drive component blocking the light. The light source 12 can illuminate the area around the junction box, making it easier for the operator to observe the accurate crimping position, crimping status, and details of the junction box.

[0037] The light source 12 is connected to the output end of the second driving component 11. The light source 12 is equipped with a light cover 9 to constrain the light. It has a certain opening angle, which is determined by the size and shape of the area to be illuminated.

[0038] Reference Figure 1 As shown, the welding assembly includes a laser generating unit 4, an optical path unit 5, and a laser head 6. The output end of the optical path unit 5 is connected to the input end of the laser head 6. The laser generating unit 4 generates stimulated emission according to preset parameters, thereby emitting a laser with a specific wavelength and power. The laser generated by the laser generating unit 4 enters the optical path unit 5, and after adjustment by the optical path unit 5, the laser enters the laser head 6. The focusing lens inside the laser head 6 further focuses the laser onto the welding area of ​​the junction box. The laser energy is absorbed by the material of the area to be welded, thus performing welding.

[0039] Refer to Figure 3 As shown, the laser welding device also includes a support frame 10. The first drive component 1 and the third drive component 2 are both disposed on the support frame 10. The center lines of the first drive component 1 and the third drive component 2 are parallel. The support frame 10 provides stable physical support for the first drive component 1 and the third drive component 2, ensuring that they will not be displaced or shaken due to their own weight or the reaction force generated by their movement during operation. The parallel first drive component 1 and the third drive component 2 make the relative position and angle of the crimping component 8 and the welding component more coordinated and easier to control. Embodiment

[0040] The embodiment provides a laser welding machine, which comprises the laser welding mechanism as described in embodiment 1.

[0041] The laser welding machine as described in the embodiment further comprises a rack, the rack is provided with an outer shell to form a sealed space, the outer shell is respectively provided with an input port and an output port, a conveying belt is arranged in the outer shell, two ends of the conveying belt are respectively connected to the input port and the output port, the welding mechanism, the crimping mechanism and the camera are arranged on the rack and above the conveying belt, and the conveying belt is used for conveying a photovoltaic module to be welded.

[0042] The photovoltaic module to be welded enters from the input port of the outer shell. The photovoltaic module is slowly conveyed into the outer shell. The speed of the conveying belt is set according to the production rhythm, and when the photovoltaic module is conveyed to a specified position below the welding mechanism, the crimping mechanism and the camera, the conveying belt stops running. According to the instruction of the control system, the welding mechanism and the crimping mechanism move the camera and the crimping assembly 8 to the upper region of the plurality of junction boxes through the respective driving assemblies, and after the crimping assembly 8 fixes the junction boxes, the welding mechanism starts the welding operation. The two-axis driving assembly adjusts the height and position of the welding assembly, so that the laser head 6 is accurately aligned with the welding position of the junction box, and the welding is completed and output from the output port.

[0043] Obviously, the above embodiment is only an example for clearly illustrating, and is not limited to the implementation. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the implementation is not required and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A laser welding mechanism characterized by, The application relates to a laser welding mechanism. The welding mechanism comprises a two-axis driving assembly and a welding assembly connected to the output end of the two-axis driving assembly, the two-axis driving assembly being capable of driving the welding assembly in a first direction and a second direction. The crimping mechanism comprises a first driving assembly, one or more crimping assemblies connected to the output end of the first driving assembly, the first driving assembly being capable of driving the crimping assembly in a first direction, and the crimping assembly being capable of crimping a to-be-welded terminal box in a second direction. A camera is connected to the first driving assembly.

2. A laser welding mechanism according to claim 1, wherein: The output end of the first driving assembly is connected with a second driving assembly, the crimping assembly is connected to the second driving assembly, and the second driving assembly is capable of driving the crimping assembly in a third direction.

3. A laser welding mechanism according to claim 2, wherein: The crimping mechanism further comprises a support connected to the output end of the first driving assembly, and the second driving assembly is mounted on the support, the height of the support in the second direction being lower than the height of the welding assembly.

4. The laser welding mechanism of claim 1, wherein: The two-axis driving assembly comprises a third driving assembly and a fourth driving assembly for driving the welding assembly in the first direction and the second direction respectively, and the fourth driving assembly is connected to the output end of the third driving assembly.

5. The laser welding mechanism of claim 1, wherein: The crimping assembly comprises a fifth driving assembly and a pressing head, the fifth driving assembly being connected to the output end of the second driving assembly, and the pressing head being connected to the output end of the fifth driving assembly.

6. The laser welding mechanism of claim 1, wherein: One side of the crimping assembly is provided with a light source.

7. A laser welding mechanism according to claim 6, wherein: The light source is connected to the output end of the second driving assembly, and the light source is provided with a light cover.

8. The laser welding mechanism of claim 1, wherein: The welding assembly comprises a laser generating unit, an optical path unit and a laser head, the output end of the optical path unit being connected to the input end of the optical path unit, and the output end of the optical path unit being connected to the input end of the mechanism head.

9. The laser welding mechanism of claim 1, wherein: The laser welding mechanism further comprises a support frame, the first driving assembly and the third driving assembly are arranged on the support frame, and the center lines of the first driving assembly and the third driving assembly are parallel.

10. A laser welding machine characterized by, The application further relates to a laser welding mechanism comprising the laser welding mechanism. The application further relates to a laser welding mechanism comprising the laser welding mechanism.

Images