Light path adjusting device for laser splitting

Abstract

The utility model relates to a light path adjusting device for laser splitting, which comprises a light path adjusting box body and a light splitting unit positioned in the light path adjusting box body, a plurality of incident ports are formed in the left side and the right side of the front end of the light path adjusting box body, and emergent ports distributed along the left-right direction are formed in the top, close to the rear end, of the light path adjusting box body; the light splitting unit comprises an emergent reflecting prism export module, a first voice coil motor, a rear emergent reflecting prism translation unit, a front emergent reflecting prism translation unit and a second voice coil motor. According to the light path adjusting device provided by the utility model, the existing light splitting light path design is improved, the lineation efficiency and accuracy are improved, the light path adjusting device has the functions of trajectory tracking and automatic focusing, the problem of lineation accuracy in the existing light splitting lineation system can be effectively solved through trajectory tracking, and the product processing yield is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field related to laser scribing, and in particular to an optical path adjustment device for laser splitting. Background Art

[0002] Perovskite solar cell technology has developed rapidly in recent years. As a third-generation solar cell, it boasts rapid efficiency improvements and great potential. The perovskite process includes three steps: thin film preparation, laser scribing, and packaging.

[0003] Laser scribing in perovskite solar cells uses multiple laser etching passes to construct the circuit structure within the perovskite cell, connecting multiple perovskite cells in series to form a component, blocking the conduction and thus forming a separate module. The serial interconnection structure limits the output current of the solar cell, increases the output voltage, and reduces current loss.

[0004] The increasing size of perovskite solar cells places high demands on laser scribing speed. Existing thin-film solar cell laser scribing technology has a drawback: laser scribing requires the laser head to quickly move across the solar cell substrate during laser scribing. Scribing processing time is calculated as: single-pass scribing time * number of subcells - 1. Furthermore, each subcell contains P1, P2, and P3 lines, further increasing the laser scribing speed. For example, for a 1200mm*600mm perovskite solar cell with a 5mm subcell width, the total number of laser scribing lines exceeds 300. This makes it difficult to further increase solar cell substrate production capacity, resulting in relatively low efficiency.

[0005] After extensive searching, I found that the Chinese patent publication number is CN118438043A, which discloses a thin-film solar cell laser scribing device and laser scribing method. The laser scribing device includes an optical system and a substrate workbench. The optical system includes a laser, a beam expander collimator, multiple polarization beam splitters, multiple focusing mirrors, and multiple total reflection mirrors placed in sequence. The substrate workbench is used to place the film layer to be scribed below the focusing mirror. Each of the polarization beam splitters is used to split a laser beam into two laser beams with mutually perpendicular propagation directions. One of the split laser beams enters the adjacent polarization beam splitter prism, and the other laser beam passes through the focusing mirror to scribing the film layer. A total reflection mirror is set on the output light path of each focusing mirror. The total reflection mirror is located below the film layer and is used to reflect the laser light passing through the film layer to the adjacent scribing position. Each scribing area of ​​the present application has two upper and lower beams acting simultaneously, which improves the efficiency of laser scribing.

[0006] During laser scribing and etching, existing methods can cause laser energy to exceed the etching threshold, impacting unscribed film layers. To mitigate this, multiple, low-energy scribing passes can be used, but these multiple passes result in low laser scribing efficiency. This patent utilizes a total reflector located below the film layer to reflect the laser light passing through it to the adjacent scribing location. In this solution, the bottom total reflector reflects the split, scribed light path to the next optical path, improving energy efficiency. However, a disadvantage is that the total reflector reflects the lower optical path, and due to the tilt of the optical path, the spot shape changes from circular to elliptical. This change in spot shape leads to uneven laser energy distribution, varying line width and pulse overlap, significantly reducing the quality of the next scribing path. Furthermore, when the material and thickness of the thin-film battery change, the optical path loses power control from the thin-film battery to the bottom total reflector, meaning the reflected optical path remains power-uncontrollable, significantly reducing scribing quality.

[0007] according to Figure 5 It can be seen that when the spot shape changes, the laser energy distribution will be uneven, resulting in different marking depths. Figure 5 The three lines in the upper middle are uneven light spots, and the bottom one is a uniform light spot.

[0008] In view of the above-mentioned defects, the designers have actively carried out research and innovation in order to create an optical path adjustment device for laser spectrometry to make it more valuable for industrial use. Utility Model Content

[0009] In order to solve any of the above technical problems, the purpose of the present invention is to provide an optical path adjustment device for laser spectrometry.

[0010] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0011] A light path adjustment device for laser splitting includes a light path adjustment box and a splitting unit located within the box. A plurality of incident ports are provided on both the left and right sides of the front end of the box, and an exit port is provided on the top of the box near the rear end, distributed along the left and right directions.

[0012] The light splitting unit includes an outgoing reflection prism derivation module, a first voice coil motor, a rear outgoing reflection prism translation unit, a front outgoing reflection prism translation unit and a second voice coil motor;

[0013] The output reflective prism derivation module is installed in the optical path adjustment box body just below the output port and is parallel to the output port. The first voice coil motor drives the rear output reflective prism translation unit to move in the left and right directions, and the second voice coil motor drives the front output reflective prism translation unit to move in the left and right directions.

[0014] The rear-emergence reflection prism translation unit includes, from left to right, a left rear-emergence reflection prism translation module and a right rear-emergence reflection prism translation module. A first incident reflection prism support is provided on the outer sides of the left rear-emergence reflection prism translation module and the right rear-emergence reflection prism translation module. The left rear-emergence reflection prism translation module and the right rear-emergence reflection prism translation module both include a plurality of first exit reflection prism translation modules staggered along the front-to-back direction. The first exit reflection prism translation module includes a first exit reflection prism translation stepping motor and a first exit reflection prism. The first exit reflection prism translation stepping motor drives the first exit reflection prism to move in the left-to-right direction through the first translation mirror bracket. A plurality of first incident reflection prisms compatible with the above-mentioned first exit reflection prism are installed on the first incident reflection prism support from back to front.

[0015] The front outgoing reflection prism translation unit includes a left front outgoing reflection prism translation module and a right front outgoing reflection prism translation module from left to right. A second incident reflection prism support is provided on the outer sides of the left front outgoing reflection prism translation module and the right front outgoing reflection prism translation module. The left front outgoing reflection prism translation module and the right front outgoing reflection prism translation module both include a plurality of second outgoing reflection prism translation modules staggered along the front-to-back direction. An outgoing reflection prism reference module is provided at the front end of the right front outgoing reflection prism translation module. The output prism translation module includes a second output reflection prism translation stepper motor and a second output reflection prism. The second output reflection prism translation stepper motor drives the second output reflection prism to move in the left and right directions through the second translation mirror bracket. The output reflection prism reference module includes an output reflection prism reference support and an output reference reflection prism installed on the output reflection prism reference support. Several second input reflection prisms that are compatible with the above-mentioned second output reflection prism or the output reference reflection prism are installed in sequence from back to front on the second input reflection prism support.

[0016] As a further improvement of the present invention, a guide rail support is arranged between the rear-emitting reflective prism translation unit and the front-emitting reflective prism translation unit, and guide rails distributed along the left and right directions are installed on the guide rail support. Several first translation mirror brackets or several second translation mirror brackets are moved along the left and right directions on the above-mentioned guide rails through sliders.

[0017] As a further improvement of the present invention, the output reflection prism export module includes a lower output reflection prism, an upper output reflection prism and a front output reflection prism. The lower output reflection prism is located directly below the upper output reflection prism, the front output reflection prism is located directly in front of the upper output reflection prism, and the front output reflection prism is located directly below the exit port. The output laser passes through the lower output reflection prism, the upper output reflection prism and the front output reflection prism in sequence and then is emitted through the exit port.

[0018] As a further improvement of the present invention, an eight-shaped structure distribution is present between the left rear outgoing reflection prism translation module and the right rear outgoing reflection prism translation module, and an eight-shaped structure distribution is present between the two first incident reflection prism supports.

[0019] As a further improvement of the present invention, the left rear outgoing reflection prism translation module and the right rear outgoing reflection prism translation module both include four first outgoing reflection prism translation modules staggered along the front-to-back direction, and four first incident reflection prisms are installed in sequence from back to front on the first incident reflection prism support.

[0020] As a further improvement of the present invention, an inverted figure-eight structure is distributed between the left front emitting reflection prism translation module and the right front emitting reflection prism translation module, and an inverted figure-eight structure is distributed between the two second incident reflection prism supports.

[0021] As a further improvement of the present invention, the left front outgoing reflection prism translation module includes four second outgoing reflection prism translation modules staggered along the front-to-back direction, and the right front outgoing reflection prism translation module includes three second outgoing reflection prism translation modules staggered along the front-to-back direction. Four second incident reflection prisms are installed in sequence from back to front on the second incident reflection prism support.

[0022] As a further improvement of the present invention, eight incident ports are provided on both the left and right sides of the front end of the optical path adjustment box.

[0023] By means of the above solution, the present invention has at least the following advantages:

[0024] The utility model proposes an optical path adjustment device, which improves the existing spectroscopic optical path design and enhances the marking efficiency and accuracy. The device has the functions of track tracking and automatic focusing. Track tracking can effectively solve the accuracy of marking in the existing spectroscopic marking system and ensure the product processing yield.

[0025] The utility model is compatible with sub-battery markings of various widths ranging from 1 to 14 mm and is suitable for a variety of products.

[0026] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a structural diagram of a light path adjustment device for laser splitting in the utility model;

[0029] Figure 2 yes Figure 1 Schematic diagram of the internal structure;

[0030] Figure 3 is based on Figure 2 A schematic diagram of the first working state;

[0031] Figure 4 is based on Figure 2 A schematic diagram of the second working state;

[0032] Figure 5 Schematic diagram of laser scribing when the spot shape changes in the prior art.

[0033] The meanings of the reference numerals in the figures are as follows.

[0034] Optical path adjustment box 1, incident port 2, exit port 3, laser 4, exit reflection prism derivation module 5, first voice coil motor 6, first exit reflection prism translation module 7, first incident reflection prism support 8, first incident reflection prism 9, guide rail support 10, second incident reflection prism support 11, second incident reflection prism 12, second voice coil motor 13, second exit reflection prism translation module 14, exit reflection prism reference module 15. DETAILED DESCRIPTION

[0035] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0037] Example

[0038] like Figures 1 to 5 As shown,

[0039] A light path adjustment device for laser spectrometry includes a light path adjustment box body 1 and a spectrometer unit located in the light path adjustment box body 1. Several incident ports 2 are provided on the left and right sides of the front end of the light path adjustment box body 1, and exit ports 3 distributed along the left and right directions are provided on the top of the light path adjustment box body 1 near the rear end.

[0040] The spectroscopic unit includes an outgoing reflective prism derivation module 5, a first voice coil motor 6, a rear outgoing reflective prism translation unit, a front outgoing reflective prism translation unit, and a second voice coil motor 13. The outgoing reflective prism derivation module 5 is installed in the optical path adjustment box 1 directly below the exit port 3 and parallel to the exit port 3. The first voice coil motor 6 drives the rear outgoing reflective prism translation unit to move in the left and right directions, and the second voice coil motor 13 drives the front outgoing reflective prism translation unit to move in the left and right directions.

[0041] 1. The rear-emerging reflection prism translation unit includes a left rear-emerging reflection prism translation module and a right rear-emerging reflection prism translation module from left to right. A first incident reflection prism support 8 is provided on the outer sides of the left rear-emerging reflection prism translation module and the right rear-emerging reflection prism translation module. The left rear-emerging reflection prism translation module and the right rear-emerging reflection prism translation module both include a plurality of first exit reflection prism translation modules 7 staggered along the front-to-back direction. The first exit reflection prism translation module 7 includes a first exit reflection prism translation stepping motor and a first exit reflection prism. The first exit reflection prism translation stepping motor drives the first exit reflection prism to move in the left and right directions through the first translation mirror bracket. A plurality of first incident reflection prisms 9 compatible with the above-mentioned first exit reflection prism are installed on the first incident reflection prism support 8 from back to front.

[0042] 2. The front outgoing reflection prism translation unit includes a left front outgoing reflection prism translation module and a right front outgoing reflection prism translation module from left to right. A second incident reflection prism support 11 is provided on the outer sides of the left front outgoing reflection prism translation module and the right front outgoing reflection prism translation module. The left front outgoing reflection prism translation module and the right front outgoing reflection prism translation module both include a plurality of second outgoing reflection prism translation modules 14 staggered along the front-to-back direction. An outgoing reflection prism reference module 15 is provided at the front end of the right front outgoing reflection prism translation module. The output prism translation module 14 includes a second output reflection prism translation stepper motor and a second output reflection prism. The second output reflection prism translation stepper motor drives the second output reflection prism to move in the left and right directions through the second translation mirror bracket. The output reflection prism reference module 15 includes an output reflection prism reference support and an output reference reflection prism installed on the output reflection prism reference support. Several second input reflection prisms 12 compatible with the above-mentioned second output reflection prism or the output reference reflection prism are installed in sequence from back to front on the second input reflection prism support 11.

[0043] 3. A guide rail support 10 is provided between the rear-emerging reflective prism translation unit and the front-emerging reflective prism translation unit. Guide rails distributed along the left and right directions are installed on the guide rail support 10. Several first translation mirror brackets or several second translation mirror brackets move along the left and right directions on the above-mentioned guide rails through sliders.

[0044] 4. The output reflection prism derivation module 5 includes a lower output reflection prism, an upper output reflection prism and a front output reflection prism. The lower output reflection prism is located directly below the upper output reflection prism, the front output reflection prism is located directly in front of the upper output reflection prism, and the front output reflection prism is located directly below the output port 3. The output laser 4 passes through the lower output reflection prism, the upper output reflection prism and the front output reflection prism in sequence and then is emitted through the output port 3.

[0045] 5. The structure and quantity arrangement of the above-mentioned output reflection prism derivation module 5, the first voice coil motor 6, the rear output reflection prism translation unit, the front output reflection prism translation unit and the second voice coil motor 13.

[0046] 1) The left rear outgoing reflection prism translation module and the right rear outgoing reflection prism translation module are arranged in an eight-shaped structure, and the two first incident reflection prism supports 8 are arranged in an eight-shaped structure.

[0047] 2) The left rear outgoing reflection prism translation module and the right rear outgoing reflection prism translation module both include four first outgoing reflection prism translation modules 7 staggered along the front-to-back direction, and four first incident reflection prisms 9 are installed in sequence from back to front on the first incident reflection prism support 8.

[0048] 3) The left front outgoing reflection prism translation module and the right front outgoing reflection prism translation module are arranged in an inverted figure-eight structure, and the two second incident reflection prism supports 11 are arranged in an inverted figure-eight structure.

[0049] 4) The left front outgoing reflection prism translation module includes four second outgoing reflection prism translation modules 14 staggered along the front-to-back direction, and the right front outgoing reflection prism translation module includes three second outgoing reflection prism translation modules 14 staggered along the front-to-back direction. Four second incident reflection prisms 12 are installed in sequence from back to front on the second incident reflection prism support 11.

[0050] 5) Eight incident ports 2 are provided on both the left and right sides of the front end of the optical path adjustment box 1 .

[0051] The gap adjustment operation description of this utility model:

[0052] like Figures 3 and 4 By operating the multiple first outgoing reflective prism translation modules 7 and the second outgoing reflective prism translation modules 14 separately, the spacing between the optical paths can be adjusted from the initial 8 mm to 14 mm, which can meet the 1-14 mm sub-cell width marking, wherein the adjustable optical path spacing is an integer multiple of the cell width.

[0053] In addition, two voice coil motors are used to control the left and right movements of the rear-emitting reflective prism translation unit and the front-emitting reflective prism translation unit respectively, and then an external high-speed camera is used to visually capture the trajectory of the previous light ray to perform tracking movement.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0055] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A light path adjustment device for laser light splitting, comprising a light path adjustment box (1) and a light splitting unit located in the light path adjustment box (1), wherein a plurality of incident ports (2) are provided on both left and right sides of the front end of the light path adjustment box (1), and an emission port (3) distributed in the left and right directions is provided on the top of the light path adjustment box (1) near the rear end; Its characteristics are: The light splitting unit comprises an outgoing reflection prism derivation module (5), a first voice coil motor (6), a rear outgoing reflection prism translation unit, a front outgoing reflection prism translation unit and a second voice coil motor (13); The output reflection prism derivation module (5) is installed in the optical path adjustment box (1) directly below the output port (3) and is parallel to the output port (3); the first voice coil motor (6) drives the rear output reflection prism translation unit to move in the left and right directions; and the second voice coil motor (13) drives the front output reflection prism translation unit to move in the left and right directions; The rear outgoing reflection prism translation unit includes, from left to right, a left rear outgoing reflection prism translation module and a right rear outgoing reflection prism translation module. A first incident reflection prism support (8) is provided on the outer sides of the left rear outgoing reflection prism translation module and the right rear outgoing reflection prism translation module. The left rear outgoing reflection prism translation module and the right rear outgoing reflection prism translation module both include a plurality of first outgoing reflection prism translation modules (7) staggered along the front-back direction. The first outgoing reflection prism translation module (7) includes a first outgoing reflection prism translation stepping motor and a first outgoing reflection prism. The first outgoing reflection prism translation stepping motor drives the first outgoing reflection prism to move in the left-right direction via a first translation mirror bracket. A plurality of first incident reflection prisms (9) adapted to the first outgoing reflection prism are installed on the first incident reflection prism support (8) from back to front. The front outgoing reflection prism translation unit comprises a left front outgoing reflection prism translation module and a right front outgoing reflection prism translation module from left to right, a second incident reflection prism support (11) is provided on the outer sides of the left front outgoing reflection prism translation module and the right front outgoing reflection prism translation module, the left front outgoing reflection prism translation module and the right front outgoing reflection prism translation module both comprise a plurality of second outgoing reflection prism translation modules (14) staggered along the front-to-back direction, an outgoing reflection prism reference module (15) is provided at the front end of the right front outgoing reflection prism translation module, and the second outgoing reflection prism The incident prism translation module (14) includes a second outgoing reflection prism translation stepping motor and a second outgoing reflection prism. The second outgoing reflection prism translation stepping motor drives the second outgoing reflection prism to move in the left and right directions via a second translation mirror bracket. The outgoing reflection prism reference module (15) includes an outgoing reflection prism reference support and an outgoing reference reflection prism mounted on the outgoing reflection prism reference support. A plurality of second incident reflection prisms (12) adapted to the above-mentioned second outgoing reflection prism or the outgoing reference reflection prism are sequentially mounted on the second incident reflection prism support (11) from back to front.

2. The optical path adjustment device for laser spectrometry according to claim 1, wherein: A guide rail support (10) is provided between the rear-emergence reflection prism translation unit and the front-emergence reflection prism translation unit, and guide rails distributed along the left-right direction are installed on the guide rail support (10), and a plurality of the first translation mirror brackets or a plurality of the second translation mirror brackets are respectively moved along the left-right direction on the above-mentioned guide rails via sliders.

3. The optical path adjustment device for laser spectrometry according to claim 1, wherein: The exit reflection prism derivation module (5) comprises a lower exit reflection prism, an upper exit reflection prism and a front exit reflection prism, wherein the lower exit reflection prism is located directly below the upper exit reflection prism, the front exit reflection prism is located directly in front of the upper exit reflection prism, and the front exit reflection prism is located directly below the exit port (3). The exiting laser (4) passes through the lower exit reflection prism, the upper exit reflection prism and the front exit reflection prism in sequence and is then emitted through the exit port (3).

4. The optical path adjustment device for laser spectrometry according to claim 1, wherein: The left rear outgoing reflection prism translation module and the right rear outgoing reflection prism translation module are arranged in an eight-shaped structure, and the two first incident reflection prism supports (8) are arranged in an eight-shaped structure.

5. The optical path adjustment device for laser spectrometry according to claim 1, wherein: The left rear outgoing reflection prism translation module and the right rear outgoing reflection prism translation module both include four first outgoing reflection prism translation modules (7) staggered along the front-to-back direction, and four first incident reflection prisms (9) are sequentially mounted on the first incident reflection prism support (8) from the back to the front.

6. The optical path adjustment device for laser spectrometry according to claim 1, wherein: An inverted figure-eight structure is distributed between the left front outgoing reflection prism translation module and the right front outgoing reflection prism translation module, and an inverted figure-eight structure is distributed between the two second incident reflection prism supports (11).

7. The optical path adjustment device for laser spectrometry according to claim 1, wherein: The left front outgoing reflection prism translation module includes four second outgoing reflection prism translation modules (14) staggered along the front-to-back direction, and the right front outgoing reflection prism translation module includes three second outgoing reflection prism translation modules (14) staggered along the front-to-back direction. Four second incident reflection prisms (12) are sequentially mounted on the second incident reflection prism support (11) from the back to the front.

8. The optical path adjustment device for laser spectrometry according to claim 1, wherein: Eight incident ports (2) are provided on both the left and right sides of the front end of the optical path adjustment box (1).

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