A laser marking device and laser marking light box for thin-film solar cells

Abstract

This application belongs to the field of thin-film solar cell technology and discloses a laser scribing light box for thin-film solar cells, including a box body, an infrared control module, and a green light control module. The end of the box body has an input terminal for inputting infrared and green laser light; the bottom of the box body has an output terminal; the top wall inside the box body has a first lifting unit and a second lifting unit, with the infrared control module connected to the first lifting unit and the green light control module connected to the second lifting unit. This laser scribing light box integrates the infrared and green light control modules into one box body. The infrared and green light control modules are raised and lowered relative to the input terminal at the end of the box body to achieve switching between infrared and green laser light. This also allows for a more compact layout, avoiding interference between the infrared and green light control modules and further saving space. In addition, this application also discloses a laser scribing device for thin-film solar cells.

Description

Technical Field

[0001] This application belongs to the field of thin-film solar cell technology, specifically relating to a laser scribing device and laser scribing light box for thin-film solar cells. Background Technology

[0002] Laser scribing equipment is an essential tool in the manufacture of thin-film solar cells. It is used to form a structure in which multiple sub-cells are interconnected by laser scribing on the deposited thin film. The principle is to focus a laser beam with a specific energy and pulse frequency on the film layer to be scribed, and use the physical processes such as thermal effect and thermal stress generated by the interaction between the laser beam and the film layer to remove the film layer in the irradiated area.

[0003] In the existing technology, the conventional scribing process for thin-film solar cells involves a total of three scribing lines, namely P1, P2 and P3. Since the laser wavelengths and pulse widths used for P1, P2 and P3 are different, two optical systems are required to complete the scribing.

[0004] Chinese patent CN117464188A discloses a dual-path laser scribing device for thin-film solar cells, including a nanosecond infrared laser, a picosecond green laser, an isolator, a beam expander, multiple reflectors, two focusing lenses, an X-axis moving module, a Y-axis moving module, a Z-axis moving module, a slide table, and an adsorption platform. The two reflectors and the slide table are fixed to the X-axis moving module and move together along the X-axis, forming a flying optical path that moves along the X-axis. The slide table is fixed to the output end of the Z-axis moving module, and the two focusing lenses are mounted on the slide table and can move together with the slide table along the Z-axis, forming a flying optical path that moves along the Z-axis.

[0005] In the above technical solution, a single device can complete the three scribing processes P1, P2, and P3. The workpiece movement is limited to the Y-axis direction, reducing the load on the large platform in the Y-axis direction and saving equipment space. This significantly reduces the space occupied by the equipment, thus saving on site and material costs. However, it still uses two different modules to output nanosecond infrared lasers and picosecond green lasers, which could be further optimized to save equipment space. Utility Model Content

[0006] The purpose of this application is to solve the above-mentioned problems and provide a laser scribing light box for thin-film solar cells. This laser scribing light box integrates an infrared control module and a green light control module into a single housing. The infrared control module and the green light control module are positioned relative to the input end of the housing via a lifting mechanism to achieve switching between infrared and green laser light. Furthermore, the lifting mechanism avoids interference between components in the infrared and green light control modules, allowing for a more compact layout, stronger overall integrity, and further space savings. In addition, this application also discloses a laser scribing device for thin-film solar cells.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] A laser marking light box for thin-film solar cells includes a box body, an infrared control module, and a green light control module. The end of the box body is provided with an input terminal for inputting infrared laser and green laser; the bottom of the box body is provided with an output terminal; the top wall inside the box body is provided with a first lifting unit and a second lifting unit, the infrared control module is connected to the first lifting unit, and the green light control module is connected to the second lifting unit.

[0009] The first and second lifting units operate alternately, and both the infrared control module and the green light control module are positioned downwards relative to the input end of the enclosure.

[0010] Both the infrared laser controlled by the infrared control module and the green laser controlled by the green light control module are output through the output terminal of the enclosure.

[0011] Preferably, the infrared control module includes an infrared focusing lens, an infrared output lens, an infrared attenuation module, an infrared beam splitter, and multiple infrared reflectors;

[0012] The infrared focusing lens, infrared output lens, infrared attenuation module, infrared beam splitter, and multiple infrared reflectors are all connected to the first lifting unit;

[0013] An infrared beam splitter is used to split the input infrared laser into two infrared sub-beams, which are then directed toward an infrared reflector. Multiple infrared reflectors are used to reflect the infrared sub-beams multiple times, and during the reflection process, the infrared attenuation module at least once performs attenuation. The attenuated infrared sub-beams are then directed toward an infrared focusing mirror, and after being focused by the infrared focusing mirror, they are directed toward an infrared output mirror and then reflected and output.

[0014] Preferably, there are multiple first lifting units. Each first lifting unit includes a first lifting cylinder, a first support block connected to the power output end of the first lifting cylinder, an infrared focusing lens, an infrared output lens, an infrared attenuation module, an infrared beam splitter, and an infrared reflector, which are respectively connected to their corresponding first support blocks. The cylinder body of the first lifting cylinder is connected to the top wall inside the housing.

[0015] Preferably, the cross-section of the infrared focusing mirror is a right-angled triangular structure.

[0016] Preferably, the green light control module includes a green light focusing lens, a green light output lens, a green light attenuation module, a green light beam splitter, and multiple green light reflectors;

[0017] The green light focusing lens, green light output lens, green light attenuation module, green light beam splitter, and multiple green light reflectors are all connected to the second lifting unit;

[0018] The green beam splitter is used to split the input green laser into two green photonic beams, which are then directed toward green reflectors. Multiple green reflectors are used to reflect the green photonic beams multiple times, and during the reflection process, the green photonic beams are attenuated at least once by a green attenuation module. The attenuated green photonic beams are then directed toward a green focusing mirror, and after being focused by the green focusing mirror, they are directed toward a green output mirror and then reflected out by the green output mirror.

[0019] Preferably, there are multiple second lifting units. Each second lifting unit includes a second lifting cylinder, a second support block connected to the power output end of the second lifting cylinder, a green light focusing lens, a green light output lens, a green light attenuation module, a green light beam splitter, and a green light reflector, which are respectively connected to their corresponding second support blocks. The cylinder body of the second lifting cylinder is connected to the top wall inside the housing.

[0020] Preferably, the cross-section of the green light focusing lens is a right-angled triangular structure.

[0021] Preferably, the enclosure is also provided with a liftable first light shutter and a second light shutter. The input end includes an infrared input end and a green light input end. The positions of the first light shutter and the infrared input end are matched, and the positions of the second light shutter and the green light input end are matched. The first light shutter and the second light shutter are respectively used to close the corresponding infrared input end and green light input end.

[0022] Meanwhile, this application also provides a laser scribing device for thin-film solar cells, including a frame, a gantry, a clamping mechanism, an infrared laser output module, a green laser output module, and a laser scribing light box for thin-film solar cells. The frame is provided with a worktable and a conveying mechanism, which are arranged at both ends of the worktable. The gantry is connected to the frame and is provided with a first horizontal drive mechanism. The box is connected to the first horizontal drive mechanism and is located above the worktable. The first horizontal drive mechanism is used to drive the box to move along the length direction of the gantry.

[0023] The frame is also equipped with a second horizontal drive mechanism, which is arranged on both sides of the conveying mechanism. There are two clamping mechanisms, which correspond one-to-one with the second horizontal drive mechanism. The clamping mechanisms are connected to the second horizontal drive mechanism, and the second horizontal drive mechanism is used to drive the clamping mechanism to move along the length direction of the conveying mechanism.

[0024] The output terminals of both the infrared laser output module and the green laser output module are opposite to the input terminals of the enclosure.

[0025] Preferably, the infrared laser output module includes an infrared laser and an infrared optical path adjustment mechanism, and the green laser output module includes a green laser and a green optical path adjustment mechanism. The infrared optical path adjustment mechanism and the green optical path adjustment mechanism are arranged side by side on the frame. The infrared laser is located on one side of the infrared optical path adjustment mechanism, and the green laser is located on one side of the green optical path adjustment mechanism. The input end of the infrared optical path adjustment mechanism is opposite to the output end of the infrared laser, and the input end of the green optical path adjustment mechanism is opposite to the output end of the green laser. The output ends of both the infrared optical path adjustment mechanism and the green optical path adjustment mechanism are opposite to the input end of the housing.

[0026] Compared with the prior art, the beneficial effects of this application are:

[0027] This laser marking light box integrates an infrared control module and a green light control module into one box. The infrared control module and the green light control module are raised and lowered to face the input end of the box to achieve switching between infrared laser and green laser. At the same time, the raising and lowering method can avoid mutual interference between the components in the infrared control module and the green light control module. The layout can be more compact, which not only makes the whole structure stronger, but also saves space. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the internal structure of the laser scribing box for the thin-film solar cell in Example 1;

[0029] Figure 2 This is a schematic diagram showing the connection between the infrared focusing lens and the lifting unit of the laser scribing light box of the thin-film solar cell in Example 1.

[0030] Figure 3 This is a schematic diagram showing the connection between the infrared output mirror and the lifting unit of the laser scribing light box of the thin-film solar cell in Example 1.

[0031] Figure 4 This is a schematic diagram showing the connection between the infrared attenuation module and the lifting unit of the laser scribing box of the thin-film solar cell in Example 1.

[0032] Figure 5This is a schematic diagram showing the connection between the infrared beam splitter and the lifting unit of the laser scribing box for the thin-film solar cell in Example 1.

[0033] Figure 6 This is a schematic diagram showing the connection between the infrared reflector and the lifting unit of the laser scribing box for the thin-film solar cell in Example 1.

[0034] Figure 7 This is a schematic diagram of the structure of the first shutter of the laser scribing light box of the thin-film solar cell in Example 1;

[0035] Figure 8 This is a schematic diagram of the infrared laser output of the laser scribing box of the thin-film solar cell in Example 1;

[0036] Figure 9 This is a schematic diagram of the green laser output of the laser scribing box of the thin-film solar cell in Example 1;

[0037] Figure 10 This is one of the structural schematic diagrams of a laser scribing device for a thin-film solar cell according to Example 2;

[0038] Figure 11 This is a second schematic diagram of the structure of a laser scribing device for a thin-film solar cell in Example 2;

[0039] The labels for each item are as follows:

[0040] Cabinet 1; Infrared control module 2; Green light control module 3; Frame 10; Input terminal 11; Output terminal 12; First lifting unit 13; First optical shutter 14; Second optical shutter 15; Gantry 20; Infrared focusing lens 21; Infrared output lens 22; Infrared attenuation module 23; Infrared beam splitter 24; Infrared reflector 25; Clamping mechanism 30; Green light focusing lens 31; Green light output lens 32; Green light attenuation module 33; Green light beam splitter 34; Green light reflector 35; Infrared laser output module 40; Green laser output module 50; Worktable 101; Conveying mechanism 102; second horizontal drive mechanism 103; infrared input terminal 111; green light input terminal 112; first lifting cylinder 131; first support block 132; first drive cylinder 141; first plate 142; first horizontal drive mechanism 201; first infrared beam splitter 241; second infrared beam splitter 242; third infrared beam splitter 243; support base 301; clamping cylinder 302; elastic block 303; infrared laser 401; infrared optical path adjustment mechanism 402; green laser 501; green optical path adjustment mechanism 502. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0042] Before describing the embodiments of this application, the accompanying drawings of this application will be explained first. Since the green light focusing lens and infrared focusing lens, green light output lens and infrared output lens, green light attenuation module and infrared attenuation module, green light beam splitter and infrared beam splitter, green light reflector and infrared reflector are the only different in terms of the wavelength they are used for, and have the same structure, the structural schematic diagrams of the green light focusing lens, green light output lens, green light attenuation module, green light beam splitter and green light reflector can be referred to the corresponding infrared focusing lens, infrared output lens, infrared attenuation module, infrared beam splitter and infrared reflector.

[0043] Furthermore, in order to distinguish between green light focusing lenses and infrared focusing lenses, green light output lenses and infrared output lenses, green light attenuation modules and infrared attenuation modules, green light beam splitters and infrared beam splitters, and green light reflectors and infrared reflectors, in Figures 1-3 In the design, the green light focusing lens, green light output lens, green light beam splitter, and green light reflecting lens are all filled with filler material. This filler material is only for easy differentiation and is not a structural limitation. Figure 8 and Figure 9 This is a bottom view of the box. Figure 8 and Figure 9 Only the optical path is shown; the first and second lifting units are not shown. The output direction is perpendicular to the plane of the paper, and the dashed area represents the output end.

[0044] Furthermore, since the first and second lifting units have the same structure, the connection methods of the green light focusing lens, green light output lens, green light attenuation module, green light beam splitter, and green light reflector with the second lifting unit are basically the same as the connection methods of the infrared focusing lens, infrared output lens, infrared attenuation module, infrared beam splitter, and infrared reflector with the first lifting unit. Therefore, the attached figures only show the connection methods of the infrared focusing lens, infrared output lens, infrared attenuation module, infrared beam splitter, and infrared reflector with the first lifting unit. The connection methods of the green light focusing lens, green light output lens, green light attenuation module, green light beam splitter, and green light reflector with the second lifting unit can be directly determined from the provided figures. Figure 2 and Figure 6 Therefore, it can be concluded that the structures of the first and second optical shutters are basically the same, and thus the structure of the second optical shutter can be determined based on... Figure 7 The conclusion is as follows.

[0045] Example 1

[0046] refer to Figures 1-9 A laser marking light box for thin-film solar cells includes a box body 1, an infrared control module 2, and a green light control module 3. The end of the box body 1 is provided with an input terminal 11 for inputting infrared laser and green laser; the bottom of the box body 1 is provided with an output terminal 12; the top wall inside the box body 1 is provided with a first lifting unit 13 and a second lifting unit (refer to the first lifting unit 13). The infrared control module 2 is connected to the first lifting unit 13; the green light control module 3 is connected to the second lifting unit.

[0047] The first lifting unit 13 and the second lifting unit operate alternately, and both the infrared control module 2 and the green light control module 3 are positioned downwards relative to the input terminal 11 of the housing 1.

[0048] The infrared laser controlled by the infrared control module 2 and the green laser controlled by the green light control module 3 are both output through the output terminal 12 of the housing 1.

[0049] In this design, when an infrared laser is about to be input, the first lifting unit 13 drives the infrared control module 2 to move downward, so that the infrared control module 2 is opposite to the input end 11 of the housing 1. The infrared laser enters the housing 1 from the input end 11 of the housing 1 and is directed towards the infrared control module 2. The infrared laser, after being controlled by the infrared control module 2, is output vertically from the bottom of the housing 1.

[0050] When the green laser is about to be input, after the infrared laser input stops, the first lifting unit 13 drives the infrared control module 2 to move upward, so that the infrared control module 2 is reset. At the same time, the second lifting unit drives the green control module 3 to move downward, so that the green control module 3 is opposite to the input end 11 of the housing 1. The green laser enters the housing 1 from the input end 11 of the housing 1 and is directed towards the green control module 3. After being controlled by the green control module 3, the green laser is vertically output from the bottom of the housing 1.

[0051] In this way, the infrared control module 2 and the green light control module 3 are integrated into a single housing 1. The infrared control module 2 and the green light control module 3 are positioned relative to the end input terminal 11 of the housing 1 by means of lifting and lowering, so as to realize the switching between infrared laser and green laser. At the same time, the lifting and lowering method can also avoid mutual interference between the components in the infrared control module 2 and the green light control module 3, and the layout can be more compact, which not only makes the overall structure stronger, but also saves space.

[0052] More specifically, the infrared control module 2 includes an infrared focusing mirror 21, an infrared output mirror 22, an infrared attenuation module 23, an infrared beam splitter 24, and multiple infrared reflectors 25.

[0053] Infrared focusing lens 21, infrared output lens 22, infrared attenuation module 23, infrared beam splitter 24 and multiple infrared reflectors 25 are all connected to the first lifting unit 13;

[0054] Infrared beam splitter 24 is used to split the input infrared laser into two infrared sub-beams, which are directed toward infrared reflector 25 respectively. Multiple infrared reflectors 25 are used to reflect the infrared sub-beams multiple times, and at least once by infrared attenuation module 23 during the reflection process. The attenuated infrared sub-beams are directed toward infrared focusing mirror 21, and the infrared sub-beams focused by infrared focusing mirror 21 are directed toward infrared output mirror 22 and output by reflection by infrared output mirror 22.

[0055] In this embodiment, the number of infrared beam splitters 24 is three, as shown in the reference. Figure 8 The infrared beam splitters are a first infrared beam splitter 241, a second infrared beam splitter 242, and a third infrared beam splitter 243, respectively. After the infrared laser enters the optical box, it is horizontally directed toward the first infrared beam splitter 241. After being reflected and split by the first infrared beam splitter 241, a first infrared beam split in the d direction and a second infrared beam split in the b direction are generated. The second infrared beam split in the b direction is directed toward the second infrared beam splitter 242 to generate a third infrared beam split in the c direction, while the second infrared beam split continues to be emitted toward the b direction. The third infrared beam split is directed toward the third infrared beam splitter 243 to generate a fourth infrared beam split in the b direction, while the third infrared beam split continues to be emitted toward the c direction.

[0056] The first and third infrared beams are adjusted to the b direction by the infrared reflector 25, and after being attenuated by the infrared attenuation module 23, they are directed toward the infrared reflector 25. The first and second infrared beams are adjusted to the c direction, and the third and fourth infrared beams are adjusted to the d direction.

[0057] The first infrared beam in direction c and the third infrared beam in direction d are focused by the infrared focusing mirror 21, then adjusted to direction a by the infrared reflector 25 and directed towards the infrared output mirror 22. The second infrared beam in direction c and the fourth infrared beam in direction d are adjusted to direction b by the infrared reflector 25 and directed towards the infrared focusing mirror 21. After being focused by the infrared focusing mirror 21, they are directed towards the infrared output mirror 22. At this point, the first and third infrared beams are directed towards one side of the infrared output mirror 22, while the second and fourth infrared beams are directed towards the other side, resulting in the output of four infrared laser beams through the infrared output mirror 22.

[0058] Among them, infrared attenuation module 23 is an infrared PBS attenuator, and green light attenuation modules are all green light PBS attenuators.

[0059] In this embodiment, there are multiple first lifting units 13. Each first lifting unit 13 includes a first lifting cylinder 131, a first support block 132 connected to the power output end of the first lifting cylinder 131, an infrared focusing lens 21, an infrared output lens 22, an infrared attenuation module 23, an infrared beam splitter 24, and an infrared reflector 25, which are respectively connected to the first support block 132. The cylinder body of the first lifting cylinder 131 is connected to the top wall inside the housing 1.

[0060] Specifically, each infrared focusing lens 21, infrared output lens 22, infrared attenuation module 23, infrared beam splitter 24, and infrared reflector 25 is connected to the first support block 132. That is, each infrared focusing lens 21, infrared output lens 22, infrared attenuation module 23, infrared beam splitter 24, and infrared reflector 25 is raised and lowered by its respective first lifting cylinder 131.

[0061] Among them, the air supply line on the first lifting cylinder 131 can be used to achieve synchronous lifting of multiple components through a solenoid valve.

[0062] Preferably, the cross-section of the infrared focusing mirror 21 is a right-angled triangle structure. The first and third infrared beams are directed towards the plane containing one of the right-angled sides of the infrared output mirror 22, while the second and fourth infrared beams are directed towards the plane containing the other right-angled side. Since the planes containing the right-angled sides are both inclined planes, the beams will be reflected after being directed horizontally towards the plane containing the right-angled side, thus adjusting the horizontal beams to be output vertically downwards.

[0063] In this embodiment, the green light control module 3 includes a green light focusing lens 31 (referencing infrared focusing lens 21), a green light output lens 32 (referencing infrared output lens 22), a green light attenuation module 33 (referencing infrared attenuation module 23), a green light beam splitter 34 (referencing infrared beam splitter 24), and multiple green light reflectors 35 (referencing infrared reflectors 25).

[0064] The green light focusing lens 31, the green light output lens 32, the green light attenuation module 33, the green light beam splitter 34, and multiple green light reflectors 35 are all connected to the second lifting unit.

[0065] The green beam splitter 34 is used to split the input green laser into two green photonic beams, which are then directed toward the green reflector 35. Multiple green reflectors 35 are used to reflect the green photonic beams multiple times, and during the reflection process, the green attenuation module 33 at least once. The attenuated green photonic beams are directed toward the green focusing mirror 31, and the green photonic beams focused by the green focusing mirror 31 are directed toward the green output mirror 32, and then reflected and output by the green output mirror 32.

[0066] In this embodiment, there are multiple second lifting units. Each second lifting unit includes a second lifting cylinder (refer to the first lifting cylinder), a second support block (first support block) connected to the power output end of the second lifting cylinder, a green light focusing lens 31, a green light output lens 32, a green light attenuation module 33, a green light beam splitter 34, and a green light reflector 35, which are respectively connected to their corresponding second support blocks. The cylinder body of the second lifting cylinder is connected to the top wall inside the housing 1.

[0067] In this embodiment, the cross-section of the green light focusing lens 31 is a right-angled triangular structure.

[0068] The above describes the specific components of the green light control module 3. It should be noted that the specific components and operating mode of the green light control module 3 are basically the same as those of the infrared control module 2. Therefore, the operating mode of the green light control module 3 will not be described in detail in this embodiment; the operating mode of the light control module can be derived by referring to the operating mode of the infrared control module 2. The connection relationship between the green light focusing lens 31, green light output lens 32, green light attenuation module 33, green light beam splitter 34, green light reflector 35, and the second support block can also be referenced from the connection relationship between the infrared focusing lens 21, infrared output lens 22, infrared attenuation module 23, infrared beam splitter 24, infrared reflector 25, and the first support block 132.

[0069] In this embodiment, since the infrared focusing mirror 21, infrared output mirror 22, infrared attenuation module 23, infrared beam splitter 24, and infrared reflector 25 have different structures, a first lifting cylinder 131 with different strokes is needed to match the corresponding structures. This ensures that when the first lifting cylinder 131 is fully extended, the horizontal axes of the infrared focusing mirror 21, infrared attenuation module 23, infrared beam splitter 24, and infrared reflector 25 are on the same horizontal plane, and that they can accurately direct the light towards the infrared output mirror 22 for output. The same applies to the green light focusing mirror 31, green light output mirror 32, green light attenuation module 33, green light beam splitter 34, and green light reflector 35. Taking the infrared focusing mirror 21 and green light focusing mirror 31 as examples, during the downward movement, the infrared focusing mirror 21 must completely pass over the green light focusing mirror 31, and the same applies to other components.

[0070] Preferably, the housing 1 is further provided with a liftable first shutter 14 and a second shutter 15. The input end 11 of the housing 1 includes an infrared input end 111 and a green light input end 112. The positions of the first shutter 14 and the infrared input end 111 are matched, and the positions of the second shutter 15 and the green light input end 112 are matched. The first shutter 14 and the second shutter 15 are respectively used to close the corresponding infrared input end 111 and green light input end 112.

[0071] Specifically, the first light shutter 14 includes a first drive cylinder 141 and a first plate 142 connected to the output end of the first drive cylinder 141. The first drive cylinder 141 is located inside the housing 1 near one end of its infrared input end 111, and the first plate 142 is driven downward by the first drive cylinder 141 to close the infrared input end 111.

[0072] It should be noted that the structures of the first optical shutter 14 and the second optical shutter 15 are exactly the same. Therefore, only the structure of the first optical shutter 14 is shown in the attached figure. The structure of the second optical shutter 15 can be referred to the structure of the first optical shutter 14.

[0073] The second shutter 15 includes a second drive cylinder (refer to the first drive cylinder 141) and a second plate (refer to the first plate 142) connected to the output end of the second drive cylinder. The second drive cylinder is disposed inside the housing 1 near its two ends close to the green light input end 112, and drives the second plate downward to close the green light input end 112. In this embodiment, the infrared input end 111, the green light input end 112, and the output end 12 of the housing 1 are all through holes.

[0074] In this embodiment, the infrared focusing lens 21, infrared output lens 22, infrared attenuation module 23, infrared beam splitter 24, and infrared reflector 25 are all fixed to the first support block 132 by adhesive bonding; the green light focusing lens 31, green light output lens 32, green light attenuation module 33, green light beam splitter 34, and green light reflector 35 are also fixed to the second support block by adhesive bonding.

[0075] Example 2

[0076] refer to Figure 10 and Figure 11 A laser scribing device for thin-film solar cells includes a frame 10, a gantry 20, a clamping mechanism 30, an infrared laser output module 40, a green laser output module 50, and a laser scribing light box for thin-film solar cells according to Embodiment 1. The frame 10 is provided with a worktable 101 and a conveying mechanism 102, which are arranged at both ends of the worktable 101. The gantry 20 is connected to the frame 10 and is provided with a first horizontal drive mechanism 201. The box 1 is connected to the first horizontal drive mechanism 201 and is located above the worktable 101. The first horizontal drive mechanism 201 is used to drive the box 1 to move along the length direction of the gantry 20.

[0077] The frame 10 is also provided with a second horizontal drive mechanism 103, which is arranged on both sides of the conveying mechanism 102. There are two clamping mechanisms 30, which correspond one-to-one with the second horizontal drive mechanism 103. The clamping mechanism 30 is connected to the second horizontal drive mechanism 103. The second horizontal drive mechanism 103 is used to drive the clamping mechanism 30 to move along the length direction of the conveying mechanism 102.

[0078] The output terminals of both the infrared laser output module 40 and the green laser output module 50 are opposite to the input terminal 11 of the housing 1.

[0079] In this embodiment, the first horizontal drive mechanism 201 is a motor ball screw. Since the motor ball screw is existing technology, it will not be described in detail in this embodiment. The housing 1 is connected to the sliding block of the motor ball screw, thus the housing 1 can move along the length of the gantry 20. A synchronous belt module can also be used.

[0080] In this embodiment, the second horizontal drive mechanism 103 is also a motor ball screw. In the second horizontal drive mechanism 103, a clamping mechanism 30 is connected to the sliding block of each motor ball screw. The clamping mechanism 30 includes a support base 301 connected to the sliding block, a clamping cylinder 302 connected to the support base 301, and an elastic block 303 connected to the power output end of the clamping cylinder 302. A cylinder (not shown in the figure) is also provided inside the support base 301. The clamping cylinder 302 is connected to the cylinder. The clamping cylinder 302 drives the elastic block 303 to move towards the conveying mechanism 102 to clamp the glass on the conveying mechanism 102. Then, the cylinder inside the support base 301 causes the clamping cylinder 302 to lift the glass, causing the glass to detach from the conveying mechanism 102 and move along the length of the conveying mechanism 102 under the drive of the second horizontal drive mechanism 103. A synchronous belt module can also be used.

[0081] Implicitly, in order to ensure the stability of the housing 1 and the clamping mechanism 30 during movement, an optical axis and a slider can be added. Specifically, an optical axis is set on the gantry 20 and a slider is set on the top of the housing 1; similarly, an optical axis is set on the frame 10 and a slider is set on the clamping mechanism 30.

[0082] In this embodiment, the conveying mechanism 102 is a roller conveyor.

[0083] In this embodiment, the workbench 101 is lower than the upper surface of the conveying mechanism 102, and rollers matching the conveying mechanism 102 can also be provided on both sides of the workbench 101.

[0084] The infrared laser and green laser, after being processed by the optical box, are directly focused onto the glass on the worktable 101. The optical box moves laterally along the glass through the first horizontal drive mechanism 201, while the clamping mechanism 30 and the second horizontal drive mechanism 103 work together to drive the glass to move longitudinally.

[0085] In this embodiment, the infrared laser output module 40 includes an infrared laser 401 and an infrared optical path adjustment mechanism 402, and the green laser output module 50 includes a green laser 501 and a green optical path adjustment mechanism 502. The infrared optical path adjustment mechanism 402 and the green optical path adjustment mechanism 502 are arranged side by side on the frame 10. The infrared laser 401 is located on one side of the infrared optical path adjustment mechanism 402, and the green laser 501 is located on one side of the green optical path adjustment mechanism 502. The input end of the infrared optical path adjustment mechanism 402 is opposite to the output end of the infrared laser 401, and the input end of the green optical path adjustment mechanism 502 is opposite to the output end of the green laser 501. The output ends of both the infrared optical path adjustment mechanism 402 and the green optical path adjustment mechanism 502 are opposite to the input end of the housing.

[0086] The infrared light path adjustment mechanism 402 and the green light path adjustment mechanism 502 have basically the same structure. The following only describes the infrared light path adjustment mechanism 402. The infrared light path adjustment mechanism 402 includes an outer shell and multiple reflectors set inside the outer shell. The input end and the output end of the infrared light path adjustment mechanism 402 are both set on the outer shell. Its main function is to adjust the direction of the light path so that the infrared laser can enter the optical box. When the infrared laser 401 can directly enter the optical box, the infrared light path adjustment mechanism 402 may not be used.

[0087] In this embodiment, the infrared laser 401 is a nanosecond infrared laser, and the green laser 501 is a picosecond green laser.

[0088] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A laser scribing light box for thin film solar cells, comprising a box body, an infrared control module and a green light control module, characterized in that, The end of the housing is provided with an input terminal for inputting infrared laser and green laser; the bottom of the housing is provided with an output terminal; the top wall inside the housing is provided with a first lifting unit and a second lifting unit, and the infrared control module is connected to the first lifting unit; The green light control module is connected to the second lifting unit; The first lifting unit and the second lifting unit operate alternately, and both the infrared control module and the green light control module are positioned downwards relative to the input end of the housing. Both the infrared laser controlled by the infrared control module and the green laser controlled by the green light control module are output through the output terminal of the housing.

2. The laser scribing light box for thin film solar cells according to claim 1, wherein, The infrared control module includes an infrared focusing lens, an infrared output lens, an infrared attenuation module, an infrared beam splitter, and multiple infrared reflectors; The infrared focusing lens, the infrared output lens, the infrared attenuation module, the infrared beam splitter, and the multiple infrared reflectors are all connected to the first lifting unit; The infrared beam splitter is used to split the input infrared laser into two infrared sub-beams, and the two infrared sub-beams are respectively directed toward the infrared reflector; the multiple infrared reflectors are used to reflect the infrared sub-beams multiple times, and during the reflection process, the infrared attenuation module at least once, and the attenuated infrared sub-beams are directed toward the infrared focusing mirror, and the infrared sub-beams focused by the infrared focusing mirror are directed toward the infrared output mirror, and are reflected and output by the infrared output mirror.

3. The laser scribing light box for thin-film solar cells according to claim 2, characterized in that, The first lifting unit comprises multiple units, each including a first lifting cylinder and a first support block connected to the power output end of the first lifting cylinder. The infrared focusing lens, the infrared output lens, the infrared attenuation module, the infrared beam splitter, and the infrared reflector are respectively connected to the corresponding first support blocks. The cylinder body of the first lifting cylinder is connected to the top wall of the housing.

4. The laser scribing light box for thin-film solar cells according to claim 2, characterized in that, The infrared focusing mirror has a right-angled triangular cross-section.

5. The laser scribing light box for thin-film solar cells according to claim 1, characterized in that, The green light control module includes a green light focusing lens, a green light output lens, a green light attenuation module, a green light beam splitter, and multiple green light reflectors; The green light focusing lens, the green light output lens, the green light attenuation module, the green light beam splitter, and the multiple green light reflectors are all connected to the second lifting unit; The green beam splitter is used to split the input green laser into two green photonic beams, which are then directed toward the green reflector. Multiple green reflectors are used to reflect the green photonic beams multiple times, and during the reflection process, the green photonic beams are attenuated at least once by the green attenuation module. The attenuated green photonic beams are then directed toward the green focusing lens, and after being focused by the green focusing lens, they are directed toward the green output lens and reflected out by the green output lens.

6. The laser scribing light box for thin-film solar cells according to claim 5, characterized in that, The second lifting unit comprises multiple units, each including a second lifting cylinder and a second support block connected to the power output end of the second lifting cylinder. The green light focusing lens, the green light output lens, the green light attenuation module, the green light beam splitter, and the green light reflector are respectively connected to their corresponding second support blocks. The cylinder body of the second lifting cylinder is connected to the top wall of the housing.

7. The laser scribing light box for thin-film solar cells according to claim 5, characterized in that, The cross-section of the green light focusing lens is a right-angled triangle.

8. The laser scribing light box for thin-film solar cells according to claim 1, characterized in that, The enclosure is also equipped with a liftable first light shutter and a second light shutter. The input end includes an infrared input end and a green light input end. The first light shutter and the infrared input end are matched in position, and the second light shutter and the green light input end are matched in position. The first light shutter and the second light shutter are respectively used to close the corresponding infrared input end and the green light input end.

9. A laser marking device for thin-film solar cells, comprising a frame, a gantry frame, a clamping mechanism, an infrared laser output module, a green laser output module, and a laser marking optical box for thin-film solar cells as described in any one of claims 1 to 8, characterized in that, The frame is provided with a workbench and a conveying mechanism. The conveying mechanism is arranged at both ends of the workbench. The gantry is connected to the frame. The gantry is provided with a first horizontal drive mechanism. The box is connected to the first horizontal drive mechanism and is located above the workbench. The first horizontal drive mechanism is used to drive the box to move along the length direction of the gantry. The frame is also provided with a second horizontal drive mechanism, which is arranged on both sides of the conveying mechanism. There are two clamping mechanisms, which correspond one-to-one with the second horizontal drive mechanism. The clamping mechanism is connected to the second horizontal drive mechanism. The second horizontal drive mechanism is used to drive the clamping mechanism to move along the length direction of the conveying mechanism. The output terminals of both the infrared laser output module and the green laser output module are opposite to the input terminals of the housing.

10. The laser scribing device for thin-film solar cells according to claim 9, characterized in that, The infrared laser output module includes an infrared laser and an infrared optical path adjustment mechanism. The green laser output module includes a green laser and a green optical path adjustment mechanism. The infrared optical path adjustment mechanism and the green optical path adjustment mechanism are arranged side by side on the frame. The infrared laser is located on one side of the infrared optical path adjustment mechanism, and the green laser is located on one side of the green optical path adjustment mechanism. The input end of the infrared optical path adjustment mechanism is opposite to the output end of the infrared laser, and the input end of the green optical path adjustment mechanism is opposite to the output end of the green laser. The output ends of both the infrared optical path adjustment mechanism and the green optical path adjustment mechanism are opposite to the input end of the housing.

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