Laser scribing equipment

Abstract

The utility model discloses a laser scribing device which comprises a working table, a support installed on the working table, an infrared laser assembly and a green laser assembly which can be independently in sliding fit with the support, and a carrying table in sliding fit with the working table. Wherein the sliding directions of the infrared laser assembly and the green laser assembly are perpendicular to the working surface of the carrying table, and the infrared laser assembly and the green laser assembly are used for adjusting the position of a focal plane; the carrying table is used for carrying a product and can be controlled to move to the position matched with the output end of the infrared laser assembly or the output end of the green laser assembly. When the laser scribing equipment is used, the infrared laser assembly and the green laser assembly are independently controlled to move along the working surface perpendicular to the carrying table, and the focal plane positions of the corresponding assemblies can be accurately adjusted, so that operation steps can be simplified, and four laser scribing procedures of P1, P2, P3 and P4 of solar cells can be efficiently completed in a matched mode.

Description

Technical Field

[0001] This utility model belongs to the field of solar cell technology, specifically relating to a laser marking device. Background Technology

[0002] Perovskite photovoltaics, as an emerging solar cell technology, has attracted widespread attention and research in recent years. It boasts advantages such as high efficiency, low cost, and ease of fabrication, offering new hope for solving the energy crisis and environmental problems.

[0003] In the laser scribing production of perovskite thin-film solar cells, processes P1, P2, P3, and P4 are typically involved to form a series structure of the cells. In the laser scribing process, infrared lasers are mostly used in processes P1, P3, and P4, while green lasers are mostly used in process P2. Infrared and green lasers are suitable for different processes due to their different wavelengths and characteristics. While existing laser scribing equipment can complete the laser scribing of solar cells, it requires personnel to move the solar cells back and forth between two machines equipped with different lasers to complete the four processes (P1, P2, P3, and P4). This numerous steps result in relatively low scribing efficiency.

[0004] Therefore, in order to address the aforementioned technical problems, it is necessary to provide a laser marking device. Utility Model Content

[0005] The purpose of this invention is to provide a laser marking device that can solve the problem mentioned above, which requires personnel to transfer solar cells between two devices to complete multiple processing steps, resulting in low marking efficiency due to numerous operation steps.

[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0007] A laser marking device includes a worktable, a bracket mounted on the worktable, an infrared laser component and a green laser component that can be independently slidably engaged with the bracket, and a platform that is slidably engaged with the worktable.

[0008] The sliding direction of the infrared laser component and the green laser component is perpendicular to the working surface of the stage, which is used to adjust the focal plane position; the stage is used to carry the product and can be controlled to move to a position that matches the output end of the infrared laser component or the green laser component.

[0009] In one or more embodiments of this utility model, the laser marking device further includes an XY-axis moving module and a Z-axis moving module; the XY-axis moving module is mounted on the worktable and is used to drive the platform to move on the worktable; the Z-axis moving module is mounted on the bracket, and the Z-axis moving module is provided in two sets, which respectively drive the infrared laser component and the green laser component to move closer to or away from the platform.

[0010] In one or more embodiments of the present invention, the infrared laser assembly includes a first mounting plate that is installed in conjunction with the Z-axis moving module, an isolator and a first galvanometer mounted on the first mounting plate, the isolator and the first galvanometer being used to connect in conjunction with the infrared laser;

[0011] And / or, the green laser assembly includes a second mounting base that cooperates with the Z-axis moving module, a green laser mounted on the second mounting base, a beam expander, an attenuation module, and a second galvanometer connected to the green laser.

[0012] In one or more embodiments of this utility model, the laser marking device further includes a camera slidably mounted on the bracket, the sliding direction of the camera being perpendicular to the working surface of the platform, used to adjust its position to capture and collect image data of the product on the platform; the infrared laser component and the green laser component can adjust their own height positions according to the image data.

[0013] In one or more embodiments of this utility model, the camera is located between the infrared laser component and the green laser component, and the platform can be moved to the shooting end of the camera.

[0014] In one or more embodiments of this utility model, a limiting member is further provided on the periphery of the platform for abutting and limiting the product on the platform.

[0015] In one or more embodiments of the present invention, the laser scribing device further includes a dust collection component installed on the worktable. The dust collection component is located on the side of the worktable close to the infrared laser component or the green laser component, and is used to clean up the smoke and dust generated during laser scribing.

[0016] In one or more embodiments of the present invention, the dust collection assembly includes a support frame fixedly installed on the workbench, and two dust collection pipes that are positioned to match the infrared laser assembly and the green laser assembly are installed on the support frame. Each dust collection pipe has an exhaust pipe connected to its side, and the exhaust pipe is used to connect to an external dust collection device.

[0017] In one or more embodiments of this utility model, the dust collection pipe is further equipped with an air distribution block that communicates with an external air source and an air knife that cooperates with the air distribution block at one end near the platform, and the air blowing direction of the air knife is towards the platform.

[0018] In one or more embodiments of this utility model, the laser marking device further includes a dust collection switching component, which includes a mounting base, two dust collection pipes fixed to the mounting base, and a main pipe that slides with the mounting base; the dust collection pipes and the air outlet pipes are connected in a one-to-one correspondence, and the main pipe can be driven to move to a position connected to either of the two dust collection pipes.

[0019] Compared with existing technologies, the laser scribing equipment of this invention, by independently controlling the movement of the infrared laser component and the green laser component along the working surface perpendicular to the stage, can precisely adjust the corresponding components to the focal plane position. This simplifies the operation steps and efficiently completes the four laser scribing processes (P1, P2, P3, and P4) of the solar cell. Furthermore, if only infrared laser processing or green laser processing is required, it can also be controlled independently, thus improving the flexibility of the laser scribing equipment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a laser scribing device in one embodiment of the present invention;

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 A schematic diagram of the platform and limiting components;

[0024] Figure 4 This is a schematic diagram of the dust collection component in one embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the dust collection pipe, the air distribution block, and the air knife in one embodiment of the present invention;

[0026] Figure 6 for Figure 1 Enlarged diagram of point B in the middle.

[0027] Explanation of key figure labels:

[0028] 1. Workbench; 2. Support; 3. Infrared laser assembly; 31. First mounting plate; 32. Isolator; 33. First galvanometer; 4. Green laser assembly; 41. Second mounting plate; 42. Green laser; 43. Second galvanometer; 5. Stage; 51. Limiting component; 61. XY axis moving module; 62. Z axis moving module; 7. Camera; 8. Dust collection assembly; 81. Support frame; 82. Dust collection pipe; 83. Air outlet pipe; 84. Air distribution block; 85. Air knife; 9. Dust collection switching assembly; 91. Mounting base; 92. Dust collection pipe; 93. Main pipe; 94. Switching cylinder. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0030] Reference Figure 1 The laser marking device in one embodiment of this utility model includes a worktable 1, a bracket 2 mounted on the worktable 1, an infrared laser component 3 and a green laser component 4 that can be independently slidably engaged with the bracket 2, and a platform 5 that is slidably engaged with the worktable 1. The sliding direction of the infrared laser component 3 and the green laser component 4 is perpendicular to the working surface of the platform 5, used to adjust the focal plane position. The platform 5 is used to carry the product and can be controllably moved to a position that engages with the output end of the infrared laser component 3 or the green laser component 4. In this embodiment, a solar cell is used as an example.

[0031] Reference Figure 1 The laser marking equipment also includes an XY-axis moving module 61 and a Z-axis moving module 62; the XY-axis moving module 61 is installed on the worktable 1 and is used to drive the stage 5 to move on the worktable 1; the Z-axis moving module 62 is installed on the bracket 2, and the Z-axis moving module 62 is provided with two sets, which respectively drive the infrared laser component 3 and the green laser component 4 to move closer to or away from the stage 5.

[0032] In this embodiment, both the XY-axis movement module 61 and the Z-axis movement module 62 are servo motor lead screw modules. The XY-axis movement module 61 can be configured as a cross shape to drive the stage 5 to move within the XY plane. The two Z-axis movement modules 62 correspondingly drive the infrared laser component 3 or the green laser component 4 to move along the Z-axis direction, thereby adjusting the focal plane position of the infrared laser component 3 and the green laser component 4.

[0033] Therefore, when the laser scribing equipment is running, the infrared laser component 3 and the green laser component 4 can be moved to a suitable focal plane position by the Z-axis moving module 62, and then the stage 5 can be moved to the output end of the infrared laser component 3 and the green laser component 4 by the XY-axis moving module 61, so as to complete the four laser scribing processes of solar cells P1, P2, P3 and P4 using laser.

[0034] Reference Figure 1 and Figure 2 The infrared laser assembly 3 includes a first mounting plate 31 that is installed in conjunction with the Z-axis moving module 62, an isolator 32 and a first galvanometer 33 mounted on the first mounting plate 31, the isolator 32 and the first galvanometer 33 being used to connect with the infrared laser; the green laser assembly 4 includes a second mounting plate 41 that is installed in conjunction with the Z-axis moving module 62, a green laser 42 mounted on the second mounting plate 41, a beam expander, an attenuation module and a second galvanometer 43 connected in conjunction with the green laser 42.

[0035] Among them, isolator 32 can prevent laser reflected from the product surface from damaging the laser; beam expander can enlarge the diameter of the laser beam and reduce the divergence angle of the laser beam; attenuation module can reduce the power of the laser beam; first galvanometer 33 and second galvanometer 43 can realize rapid scanning of the laser beam in the XY plane.

[0036] Reference Figure 1 and Figure 2 The laser marking equipment also includes a camera 7 that is slidably mounted on the bracket 2. The sliding direction of the camera 7 is perpendicular to the working surface of the platform 5, and it is used to adjust the position to capture and collect image data of the product on the platform 5. The infrared laser component 3 and the green laser component 4 can adjust their own height positions according to the image data. Figure 2 The installation of camera 7 is for illustrative purposes only. Camera 7 is located between infrared laser assembly 3 and green laser assembly 4, and stage 5 can be moved to the shooting end of camera 7.

[0037] Specifically, in this embodiment, camera 7 is a CCD camera, which can be used for calibration. During calibration, the CCD camera takes pictures and collects data of the product (solar cell) currently located on the stage 5; the data image is transmitted to the industrial control computer; the industrial control computer calculates the optimal focal plane based on the image data; the Z-axis movement module 62 is controlled to move the infrared laser component 3 and the green laser component 4 to the corresponding optimal focal plane positions. If the focal planes at different positions differ greatly, it means that the parallelism between the CCD camera's optical path projection surface and the working surface of the stage 5 exceeds the standard. In this case, the relative positional relationship between the CCD camera's projection surface and the working surface of the stage 5 can be adjusted by sliding the CCD camera to ensure the parallelism of the final projection surface.

[0038] In one optional embodiment, to ensure that the camera 7 can effectively acquire image information of the product on the platform 5, the camera 7 is equipped with a point light source.

[0039] Reference Figure 3 The platform 5 is also provided with limiting members 51 on its periphery to abut and limit the product on the platform 5. Specifically, the limiting members 51 are right-angle limiting members, and four of them are provided to abut the product on the platform 5 to prevent the product from shaking during subsequent processing.

[0040] Reference Figure 1 In one embodiment of the present invention, the laser marking device further includes a dust collection component 8 installed on the workbench 1. The dust collection component 8 is located on the side of the platform 5 near the infrared laser component 3 or the green laser component 4, and is used to clean the smoke and dust generated during laser marking.

[0041] Reference Figure 4 The dust collection assembly 8 includes a support frame 81 fixedly mounted on the worktable 1. Two dust collection pipes 82 are mounted on the support frame 81, corresponding to the positions of the infrared laser assembly 3 and the green laser assembly 4. Each dust collection pipe 82 has an exhaust pipe 83 connected to its side, which is used to connect to external dust collection equipment. The smoke and dust generated during processing not only have an unpleasant odor but also affect the accuracy of the optical path. If dust is not cleaned for a long time and falls onto the stage 5 or into the XY-axis moving module 61 or Z-axis moving module 62, it will also affect the operating performance. Therefore, when the infrared laser assembly 3 and the green laser assembly 4 perform laser scribing on the product on the stage 5, the smoke and dust generated during processing can be promptly cleaned through the dust collection pipes 82.

[0042] Reference Figure 5 Furthermore, at the end of the dust collection pipe 82 near the platform 5, an air distribution block 84 connected to an external air source and an air knife 85 cooperating with the air distribution block 84 are also installed, with the air blowing direction of the air knife 85 facing the platform 5. The air knife 85 can assist in blowing away the dust on the platform 5. In an optional embodiment, the air distribution block 84 can also be connected to a speed regulating valve to adjust the air volume.

[0043] Reference Figure 1 and Figure 6 In one embodiment of the present invention, the laser marking device further includes a dust collection switching component 9. The dust collection switching component includes a mounting base 91, two dust collection pipes 92 fixed to the mounting base 91, and a main pipe 93 that slides with the mounting base 91. The dust collection pipes 92 and the air outlet pipes 83 are connected in a one-to-one correspondence. The main pipe 93 can be driven to move to a position that connects with either of the two dust collection pipes 92.

[0044] In this embodiment, a switching cylinder 94 is installed on the mounting base 91. The output end of the switching cylinder 94 is connected to the main pipe 93 to drive the main pipe 93 to move. The main pipe 93 is connected to an external dust collection device. Therefore, when the solar cell is scribing with the infrared laser component 3, the switching cylinder 94 can drive the main pipe 93 to cooperate with the dust collection pipe 92 connected to the infrared laser component 3 to clean up the smoke and dust generated during processing. Similarly, when the solar cell is scribing with the green laser component 4, the corresponding main pipe 93 is driven to cooperate with the dust collection pipe 92 connected to the green laser component 4.

[0045] The laser scribing device in one embodiment of this utility model operates as follows: the product to be processed (solar cell) is placed on the stage 5, and then the calibration process is completed with the assistance of the camera 7, so that the infrared laser component 3 and the green laser component 4 move together to the focal plane position. Then, the stage 5 is driven to move together to the output end of the infrared laser component 3 and the green laser component 4 to complete the laser scribing work. During the laser scribing process, the dust collection component 8 and the dust collection switching component 9 work together to clean up the smoke and dust generated during processing in a timely manner.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A laser marking device, characterized in that, It includes a worktable (1), a bracket (2) mounted on the worktable (1), an infrared laser assembly (3) and a green laser assembly (4) that can be slidably engaged with the bracket (2), and a platform (5) that is slidably engaged with the worktable (1); The sliding direction of the infrared laser component (3) and the green laser component (4) is perpendicular to the working surface of the stage (5) to adjust the focal plane position; the stage (5) is used to carry the product and can be controlled to move to a position that matches the output end of the infrared laser component (3) or the green laser component (4).

2. The laser marking device according to claim 1, characterized in that, It also includes an XY-axis moving module (61) and a Z-axis moving module (62); the XY-axis moving module (61) is mounted on the worktable (1) and is used to drive the platform (5) to move on the worktable (1); the Z-axis moving module (62) is mounted on the bracket (2), and the Z-axis moving module (62) is provided in two sets, which respectively drive the infrared laser component (3) and the green laser component (4) to move closer to or away from the platform (5).

3. The laser marking device according to claim 2, characterized in that, The infrared laser assembly (3) includes a first mounting plate (31) that is installed in conjunction with the Z-axis moving module (62), an isolator (32) and a first galvanometer (33) mounted on the first mounting plate (31), the isolator (32) and the first galvanometer (33) being used to connect in conjunction with the infrared laser; And / or, the green laser assembly (4) includes a second mounting plate (41) configured to cooperate with the Z-axis moving module (62), a green laser (42) mounted on the second mounting plate (41), a beam expander, an attenuation module and a second galvanometer (43) connected to the green laser (42).

4. The laser marking device according to claim 1, characterized in that, It also includes a camera (7) that is slidably mounted on the bracket (2), the sliding direction of the camera (7) being perpendicular to the working surface of the platform (5), for adjusting its position to capture and collect image data of the product on the platform (5); the infrared laser component (3) and the green laser component (4) can adjust their own height positions according to the image data.

5. The laser marking device according to claim 4, characterized in that, The camera (7) is located between the infrared laser component (3) and the green laser component (4), and the platform (5) can be moved to the shooting end of the camera (7).

6. The laser marking device according to claim 1, characterized in that, The platform (5) is also provided with a limiting member (51) on its periphery for abutting and limiting the product on the platform (5).

7. The laser marking device according to claim 1, characterized in that, It also includes a dust collection assembly (8) installed on the workbench (1), the dust collection assembly (8) being located on the side of the stage (5) near the infrared laser assembly (3) or the green laser assembly (4), for cleaning up smoke and dust generated during laser scribing.

8. The laser marking device according to claim 7, characterized in that, The dust collection assembly (8) includes a support frame (81) fixedly installed on the workbench (1). The support frame (81) is equipped with two dust collection pipes (82) that are positioned to match the infrared laser assembly (3) and the green laser assembly (4). Each dust collection pipe (82) has an exhaust pipe (83) connected to its side. The exhaust pipe (83) is used to connect to an external dust collection device.

9. The laser marking device according to claim 8, characterized in that, The dust collection pipe (82) is also equipped with an air distribution block (84) connected to an external air source and an air knife (85) that cooperates with the air distribution block (84) at one end near the platform (5). The air blowing direction of the air knife (85) is towards the platform (5).

10. The laser marking device according to claim 8, characterized in that, It also includes a dust collection switching component (9), which includes a mounting base (91), two dust collection pipes (92) fixed to the mounting base (91), and a main pipe (93) that slides with the mounting base (91); the dust collection pipes (92) and the air outlet pipes (83) are connected in a one-to-one correspondence, and the main pipe (93) can be driven to move to a position that connects with either of the two dust collection pipes (92).

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