Laser welding device for photovoltaic module connecting piece

Abstract

The utility model discloses a laser welding device for a photovoltaic module connecting piece. The laser welding device comprises a transmission module, a mounting vertical plate, a pressure head module, a photographing module and a laser welding module, the transmission module is used for conveying a photovoltaic module, the mounting vertical plate is fixedly arranged above the transmission module, a first Y-axis movement driving module and a second Y-axis movement driving module are arranged on one side of the mounting vertical plate in an up-down spaced mode, and a laser welding module is movably mounted on the first Y-axis movement driving module; a mounting support is movably mounted on the second Y-axis movement driving module, and a pressure head module and a photographing module are movably mounted on the mounting support in the X-axis direction. The welding quality of the photovoltaic module can be improved, and the welding cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, and in particular to a laser welding device for photovoltaic component connectors. Background Art

[0002] In the field of photovoltaic modules, welding of connectors is a key process. There are currently a variety of conventional welding methods, including resistance welding and electromagnetic welding. The basic principle of these conventional welding methods is to achieve welding connection between metals through contact hot melting. However, this welding method has obvious limitations. On the one hand, its consumables are large, mainly reflected in the large amount of tin and solder wire used at the bottom of the box; on the other hand, welding takes a long time, usually 3 to 4 seconds, which consumes a lot of time and cost. In addition, the welding tension is generally only 60N, and the welding yield is in the range of 96% to 98%. These factors together lead to low welding efficiency and high costs, which seriously affect the overall benefits and competitiveness of photovoltaic module production, and have become a problem to be solved in the development of the industry. Therefore, it is particularly important and urgent to develop a new welding technology that is more efficient, low-consumption and can effectively improve welding quality. Utility Model Content

[0003] In view of this, an object of the present invention is to provide a laser welding device for photovoltaic module connectors to improve the welding quality of photovoltaic modules and reduce welding costs.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A laser welding device for photovoltaic component connectors comprises a transmission module, a mounting plate, a pressure head module, a camera module and a laser welding module; the transmission module is used to transport photovoltaic components, the mounting plate is fixedly arranged above the transmission module, a first Y-axis movable drive module and a second Y-axis movable drive module are arranged at intervals on one side of the mounting plate, a laser welding module is movably mounted on the first Y-axis movable drive module, a mounting bracket is movably mounted on the second Y-axis movable drive module, and a pressure head module and a camera module are movably mounted on the mounting bracket along the X-axis direction.

[0006] To better implement the above technical solution, optionally, the camera module includes a camera and a light source, the camera is installed on the upper part of one side of the mounting bracket, the light source is installed on the lower part of one side of the mounting bracket, the light source is a trumpet-shaped structure that is small at the top and large at the bottom, and the top center of the light source has a channel for camera shooting.

[0007] Optionally, there are multiple mounting brackets and they are spaced apart along the Y-axis, and each mounting bracket is mounted with a pressure head module and a camera module movably along the X-axis direction.

[0008] Optionally, the transmission module includes a transmission drive module and a conveyor belt arranged on the transmission drive module and transmitting along the Y-axis.

[0009] Optionally, the transmission module also includes a Y-axis limiting structure, which includes four Y-axis limiting structures. The four Y-axis limiting structures are installed in pairs on the transmission drive module and correspond to the two long sides of the photovoltaic component, and can extend upward to be limited to the two long sides of the photovoltaic component.

[0010] Optionally, the Y-axis limiting structure includes a cylinder and a first limiting portion installed on a telescopic rod of the cylinder.

[0011] Optionally, it also includes two X-axis alignment modules, which are respectively installed on the transmission drive module and correspond to the two short sides of the photovoltaic component. They can move towards or away from each other to be restricted to the two short sides of the photovoltaic component.

[0012] Optionally, the X-axis alignment module includes a support plate, a drive motor, a screw, a slider and a limit assembly, the support plate is installed on the transmission drive module, the drive motor is installed on the support plate, the screw is rotatably installed on the support plate and connected to the output shaft of the drive motor, the slider is threadedly connected to the screw, and the limit assembly is installed on the slider.

[0013] Beneficial effects of the utility model:

[0014] The utility model discloses a laser welding device for photovoltaic component connectors: a camera module can guide the laser welding module to accurately position welding and detect welding quality; laser welding is used to achieve contactless welding, no need for wire box bottom tin and solder wire, which reduces energy consumption and the welding speed is 1-2s faster, the hot melt effect is stable, the welding tension is high, and the reliability and service life of the photovoltaic component are improved; the transmission module can transport the photovoltaic component, and the Y-axis limit structure and the X-axis alignment module can limit and align the photovoltaic component; a pressure head module and a camera module are arranged on the mounting bracket, and the two can be moved to the top of the connector for corresponding operations through the motion module, and the arrangement of multiple mounting brackets makes the work more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of a laser welding device for photovoltaic module connectors according to an embodiment of the utility model;

[0016] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the transmission drive module;

[0017] Figure 3 yes Figure 2 A three-dimensional schematic diagram of the center X-axis alignment module;

[0018] Figure 4 yes Figure 1 A three-dimensional schematic diagram of photovoltaic modules and connectors;

[0019] Figure 5 yes Figure 1 A three-dimensional schematic diagram of the installation stand, camera module and pressure head module at one angle;

[0020] Figure 6 yes Figure 1 A three-dimensional schematic diagram of the central installation stand, camera module and pressure head module from another angle;

[0021] Figure 7 yes Figure 1 A three-dimensional schematic diagram of the central mounting plate, the first Y-axis movable drive module, the second Y-axis movable drive module, the mounting bracket and the laser welding module.

[0022] Reference numerals:

[0023] Transmission module 10, transmission drive module 11, conveyor belt 12, Y-axis limiting structure 13, cylinder 131, first limiting part 132, X-axis alignment module 14, support plate 141, drive motor 142, screw 143, slider 144, guide rail 145, installation shaft 146, second limiting part 147, cover body 148, installation vertical plate 20, first Y-axis movable drive module 21, second Y-axis movable drive module 22, installation bracket 23, pressure head module 30, camera module 40, camera 41, light source 42, laser welding module 50, photovoltaic module 60, connector 70. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments, wherein the same components are represented by the same reference numerals.

[0025] See also Figure 1-Figure 7 The utility model embodiment discloses a laser welding device for photovoltaic module connectors, including a transmission module 10, a mounting plate 20, a pressure head module 30, a camera module 40 and a laser welding module 50; the transmission module 10 is used to transport photovoltaic modules 60, the mounting plate 20 is fixedly arranged above the transmission module 10, and a first Y-axis movable driving module 21 and a second Y-axis movable driving module 22 are arranged at intervals on one side of the mounting plate 20, the laser welding module 50 is movably mounted on the first Y-axis movable driving module 21, and a mounting bracket 23 is movably mounted on the second Y-axis movable driving module 22, and the mounting bracket 23 is movably mounted with a pressure head module 30 and a camera module 40 along the X-axis direction.

[0026] A laser welding device for a photovoltaic module connector according to an embodiment of the utility model can guide the laser welding module 50 to move along the Y-axis before welding by setting a camera module 40, so that the laser welding module 50 can be accurately positioned to weld and connect the photovoltaic module 60 and the connector 70. After welding, the camera module 40 can take photos to detect the welding quality of the laser welding module 50, which helps to improve the welding yield rate. The laser welding module 50 is used to weld the photovoltaic module 60 and the connector 70, thereby realizing contactless welding, and there is no need to use the bottom tin of the wire box and the solder wire, thereby reducing energy consumption. At the same time, the laser non-contact welding speed is 1-2s faster than the general contact welding speed. The laser welding hot melt effect is more stable than conventional tin soldering, and the welding tensile force is higher, thereby improving the reliability and service life of the photovoltaic module 60.

[0027] like Figure 1-Figure 4 As shown, the transmission module 10 includes a transmission drive module 11 and a conveyor belt 12 arranged on the transmission drive module 11 and driven along the Y-axis. The photovoltaic component 60 is a rectangular structure, which is placed on the conveyor belt 12 and driven to move by the conveyor belt 12. The long side of the photovoltaic component 60 is perpendicular to the transmission direction of the transmission belt, and the short side is parallel to the transmission direction. The short side direction of the photovoltaic component 60 is the Y-axis, the long side direction is the X-axis, and the vertical direction is the Z-axis; there are multiple connecting members 70, and the multiple connecting members 70 are spaced apart along the Y-axis direction of the photovoltaic component 60, wherein the transmission drive module 11 is a linear motor module or a motor-driven rack and pinion transmission mechanism in the prior art.

[0028] like Figure 5 and Figure 6 As shown, the camera module 40 includes a camera 41 and a light source 42. The camera 41 is installed on the upper part of one side of the mounting bracket 23, and the light source 42 is installed on the lower part of one side of the mounting bracket 23. The light source 42 is a trumpet-shaped structure that is small on the top and large on the bottom. The top center of the light source 42 has a channel for the camera 41 to shoot. The central axis of the camera 41 lens is colinear with the central axis of the channel, so that the photographic range of the camera 41 lens is concentrated directly below the light source 42.

[0029] like Figure 7As shown, in an embodiment of the utility model, there are multiple mounting brackets 23 and they are spaced apart along the Y-axis. The mounting brackets 23 are all mounted with a pressure head module 30 and a camera module 40 movably mounted along the X-axis direction. Specifically, there are three mounting brackets 23, and a pressure head module 30 and a camera module 40 movable along the X-axis are arranged on the same side of each mounting bracket 23, wherein the pressure head module 30 and the camera module 40 are spaced apart along the X-axis direction. More specifically, a motion module for synchronous movement of the pressure head module 30 and the camera module 40 is provided on the mounting bracket 23, and the motion module is a linear motor module or a motor-driven gear rack transmission mechanism in the prior art. By setting the motion module, the pressure head module 30 and the camera module 40 can be moved to the top of the connecting member 70, so that the camera module 40 can take a picture of the connecting member 70, and the pressure head module 30 fixes the connecting member 70 and then welds it by the laser welding module 50.

[0030] like Figure 2 As shown, the transmission module 10 also includes a Y-axis limiting structure 13, which includes four Y-axis limiting structures 13. The four Y-axis limiting structures 13 are installed in pairs on the transmission drive module 11 and correspond to the two long sides of the photovoltaic component 60, and can extend upward to be limited to the two long sides of the photovoltaic component 60.

[0031] Specifically, each Y-axis limiting structure 13 includes a cylinder 131 and a first limiting portion 132 installed on the telescopic rod of the cylinder 131. In this embodiment, two Y-axis limiting structures 13 are respectively installed on the outer sides of the two long sides of the photovoltaic assembly 60; when the photovoltaic assembly 60 moves to the preset position, the cylinders 131 of the four Y-axis limiting structures 13 respectively drive the corresponding first limiting portions 132 to move upward to limit the outer sides of the two long sides of the photovoltaic assembly 60; when welding and testing are completed, the cylinders 131 of the four Y-axis limiting structures 13 respectively drive the first limiting portions 132 to move downward, and the photovoltaic assembly 60 can be output under the action of the conveyor belt 12.

[0032] like Figure 2 and Figure 3 As shown, in order to align the photovoltaic component 60, an X-axis alignment module 14 is also included. The two X-axis alignment modules 14 are respectively installed on the transmission drive module 11 and correspond to the two short sides of the photovoltaic component 60. They can move in the direction of approaching or moving away from each other to be restricted to the two short sides of the photovoltaic component 60, so that the photovoltaic component 601 is aligned for easy welding.

[0033] Specifically, the X-axis alignment module 14 includes a support plate 141, a drive motor 142, a screw 143, a slider 144 and a limit assembly. The support plate 141 is installed on the transmission drive module 11, the drive motor 142 is installed on the support plate 141, the screw 143 is rotatably installed on the support plate 141 and is connected to the output shaft of the drive motor 142, the slider 144 is threadedly connected to the screw 143, and the limit assembly is installed on the slider 144.

[0034] In the embodiment of the present invention, the X-axis alignment module 14 further includes two guide rails 145 , which are parallelly mounted on both sides of the screw rod 143 , and the slider 144 is slidably matched with the two guide rails 145 .

[0035] The limiting assembly includes a mounting shaft 146 and a second limiting portion 147 . The mounting shaft 146 is vertically mounted on a corresponding end of the slider 144 , and the second limiting portion 147 is rotatably mounted on an upper end of the mounting shaft 146 via a bearing.

[0036] The linear drive mechanism further includes a cover body 148 , which is covered on the screw rod 143 and the guide rail and fixed on the support plate 141 , and two ends of the slider 144 extend out from both sides of the cover body.

[0037] The technical solution of the utility model is described in detail above in combination with specific embodiments, and the described specific embodiments are used to help understand the concept of the utility model. Derivations and variations made by those skilled in the art based on the specific embodiments of the utility model also fall within the protection scope of the utility model.

Claims

1. A laser welding device for photovoltaic module connectors, characterized in that: The invention comprises a transmission module (10), a mounting plate (20), a pressure head module (30), a camera module (40) and a laser welding module (50); the transmission module (10) is used to transport photovoltaic modules (60); the mounting plate (20) is fixedly arranged above the transmission module (10); a first Y-axis movable drive module (21) and a second Y-axis movable drive module (22) are arranged at intervals on one side of the mounting plate (20); a laser welding module (50) is movably mounted on the first Y-axis movable drive module (21); a mounting bracket (23) is movably mounted on the second Y-axis movable drive module (22); and a pressure head module (30) and a camera module (40) are movably mounted on the mounting bracket (23) along the X-axis direction.

2. A photovoltaic module connector laser welding device according to claim 1, characterized in that: The camera module (40) comprises a camera (41) and a light source (42); the camera (41) is mounted on the upper part of one side of the mounting bracket (23); the light source (42) is mounted on the lower part of one side of the mounting bracket (23); the light source (42) is a trumpet-shaped structure that is small at the top and large at the bottom; and the center of the top of the light source (42) has a channel for the camera (41) to shoot.

3. A photovoltaic module connector laser welding device according to claim 2, characterized in that: The mounting brackets (23) are multiple and are arranged at intervals along the Y axis, and each mounting bracket (23) is mounted with a pressure head module (30) and a camera module (40) movably along the X axis direction.

4. A photovoltaic module connector laser welding device according to claim 1, characterized in that: The transmission module (10) comprises a transmission drive module (11) and a conveyor belt (12) arranged on the transmission drive module (11) and transmitting along the Y axis.

5. A photovoltaic module connector laser welding device according to claim 4, characterized in that: The transmission module (10) further comprises a Y-axis limiting structure (13), wherein the Y-axis limiting structure (13) comprises four Y-axis limiting structures (13), which are mounted in pairs on the transmission drive module (11) and correspond to the two long sides of the photovoltaic component (60), and can extend upward to be limited to the two long sides of the photovoltaic component (60).

6. A photovoltaic module connector laser welding device according to claim 5, characterized in that: The Y-axis limiting structure (13) comprises a cylinder (131) and a first limiting portion (132) mounted on a telescopic rod of the cylinder (131).

7. A photovoltaic module connector laser welding device according to claim 6, characterized in that: It also includes an X-axis alignment module (14), wherein there are two X-axis alignment modules (14), the two X-axis alignment modules (14) are respectively mounted on the transmission drive module (11), and correspond to the two short sides of the photovoltaic component (60), and can move in directions approaching or moving away from each other to be restricted to the two short sides of the photovoltaic component (60).

8. A photovoltaic module connector laser welding device according to claim 7, characterized in that: The X-axis alignment module (14) comprises a support plate (141), a drive motor (142), a screw rod (143), a slider (144) and a limit assembly (145); the support plate (141) is mounted on the transmission drive module (11); the drive motor (142) is mounted on the support plate (141); the screw rod (143) is rotatably mounted on the support plate (141) and is connected to the output shaft of the drive motor (142); the slider (144) is threadedly connected to the screw rod (143); and the limit assembly (145) is mounted on the slider (144).

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