Photovoltaic cell dicing apparatus and method based on laser non-destructive cutting

Abstract

This invention provides a photovoltaic cell dicing device and method based on laser non-destructive cutting, comprising: S1 a first conveying mechanism receiving and conveying a material box loaded with large cells; S2 a first gripping mechanism gripping the large cells onto a correction platform; S3 a first inspection mechanism inspecting the large cells on the correction platform; if qualified, the first inspection mechanism inspects the position of the large cells, the correction platform adjusts the cell position, and then the second gripping mechanism moves the large cells to the dicing process, and then proceeds to step S5; if unqualified, proceeds to step S4; S4 the second gripping mechanism places the unqualified large cells into a waste area, and then proceeds to step S2; S5 the diced small cells are moved onto the second conveying mechanism by a third gripping mechanism; S6 upon reaching a preset position, the second inspection mechanism performs an appearance inspection on the diced small cells, improving conveying efficiency and ensuring high product reliability.

Description

Technical Field

[0001] This invention relates to the field of automated battery production equipment technology, specifically to a photovoltaic cell dicing device and method based on laser non-destructive cutting. Background Technology

[0002] With the development of the photovoltaic industry, cell dicing, as a key step in module production, has increasingly stringent requirements for cutting precision, yield, and photoelectric conversion efficiency. Traditional mechanical dicing methods rely on diamond engraving and mechanical breaking, which can easily cause micro-cracks and edge chipping damage at the cell edges. Therefore, laser cutting is chosen to reduce damage to the cells. When using a laser cutting machine to cut cells, precise positioning of the cells is a prerequisite for ensuring cutting accuracy. Only by firmly placing the cells in the preset processing position can the laser beam's cutting trajectory be ensured to closely match the preset path, avoiding cutting deviations and increased scrap rates due to positional offsets. Therefore, equipment is needed to align the cells before cutting and to transfer and stack the cut cells.

[0003] For example, patent document with patent application number 201910140084.1 and publication date of December 8, 2023 discloses high-speed photovoltaic module production equipment, including a laser scribing machine, a screen printing machine, a cell dicing machine, and a cell stacking machine that are set up and used in cooperation with each other; the laser scribing machine includes a cell feeding unit, a cell dicing and conveying mechanism, a cell photographing unit, a cell cutting unit, a cell unloading mechanism, and a cell unloading transmission line; the screen printing machine includes a cell feeding unit, a cell printing, photographing and correction unit, a cell printing and conveying unit, a cell screen printing unit, and a cell unloading unit; the dicing machine includes a cell alignment unit, a cell dicing and conveying unit, and a cell dicing unit; the stacking machine includes a cell stacking feeding unit, a cell stacking, photographing and correction unit, and a cell curing unit.

[0004] The above literature describes laser scribing machines that only use a cell imaging unit to photograph and calculate the position of large photovoltaic cells to determine the cutting position before cutting and unloading. However, there is no further inspection of the cut cells after cutting, which makes it impossible to ensure the impact of the cutting process on the cells and thus the scribing effect. In addition, the cut cells need to be unloaded by a feeding assembly, and after unloading, they need to be transferred back to the carrier platform for the next unloading, or multiple carrier platforms are needed for transfer between the scribing machine and the feeding assembly, which makes the overall production efficiency low. Summary of the Invention

[0005] This invention provides a photovoltaic cell dicing device and method based on laser non-destructive cutting. By performing position detection before dicing and dicing effect detection after dicing, the dicing effect is good and the production efficiency is high.

[0006] To achieve the above objectives, one aspect of the technical solution provided by the present invention is: a photovoltaic cell dicing device based on laser non-destructive cutting, comprising a first conveying mechanism, a first gripping mechanism and a dicing machine, a second conveying mechanism, a first detection mechanism, a correction platform, a second gripping mechanism and a third gripping mechanism, a second detection mechanism, and a fourth gripping mechanism. The correction platform is located on one side of the first gripping mechanism, the second gripping mechanism is located between the correction platform and the dicing machine, and a transfer platform is provided between the dicing machine and the second conveying mechanism. The correction platform is used to correct the position of the large solar cells conveyed by the first gripping mechanism, and the second gripping mechanism transports the corrected large solar cells to the transfer platform for transfer. Two dicing stages are set on both sides of the carrier platform. The two dicing stages are staggered along the vertical direction of the transfer carrier platform. The two dicing stages move alternately between the dicing machine and the second conveying mechanism. The dicing machine divides the large battery cell located below the dicing machine into two or more small battery cells and moves them to one side of the second conveying mechanism. The third gripping mechanism grabs the small battery cells located on the transfer carrier platform on one side of the second conveying mechanism and transports them to the second conveying mechanism. The second detection mechanism detects the small battery cells located on the second conveying mechanism and determines the positions of unqualified small battery cells and qualified small battery cells. The fourth gripping mechanism grabs the unqualified small battery cells and qualified small battery cells respectively and stacks them in the corresponding areas.

[0007] Furthermore, the transfer platform includes a support frame, with a drive assembly and a moving plate respectively arranged on both sides of the support frame. A dicing machine is arranged at one end of the support frame, and a second conveying mechanism is arranged on one side of the other end of the support frame. The drive assembly is used to drive the moving plate to move along the length direction of the support frame. A lifting assembly and a lifting plate are arranged on the moving plate. The lifting assembly includes a second drive assembly and a limiting assembly. The second drive assembly is arranged in the middle of the lifting plate, and the limiting assemblies are arranged on both sides of the second drive assembly. The lifting assembly drives the lifting plate to move in the vertical direction of the support frame. A connecting plate is arranged on one side of the lifting plate, and one side of the connecting plate is connected to the dicing platform. One or more support plates are evenly arranged between the other side of the connecting plate and the lifting plate. One side of the support plate is fixedly connected to the connecting plate, and the other side of the support plate is fixedly connected to the lifting plate. Two or more placement slots are arranged on the dicing platform.

[0008] In the above configuration, drive components are installed on both sides of the bracket. These drive components can drive the movable plate to move horizontally. A lifting component is installed on the movable plate. The lifting component drives the lifting plate to move via a second drive component and is also controlled by a limiting component. A support plate is installed between the connecting plate and the lifting plate, connecting the lifting plate and the connecting plate. A dicing stage is installed on one side of the connecting plate, with multiple placement slots for placing multiple battery cells. This allows for the transfer of multiple battery cells. Because multiple battery cells are placed on the dicing stage, the lifting plate on one side ensures balanced movement of the battery cells. The support plate increases the contact area between the connecting plate and the lifting plate, thereby increasing the connection strength between them and helping to maintain the horizontal stability of the dicing stage. This prevents the dicing stage from shaking due to the swaying of the lifting plate, which could affect the accuracy of the battery cell movement and further improve the reliability of dicing.

[0009] The solar cells are transported from the side near the correction platform to the side near the second conveying mechanism via a transfer platform. During the process of transporting the solar cells via the transfer platform, the laser cutting machine cuts the solar cells on the dicing machine.

[0010] Furthermore, the second drive assembly includes a second drive, a second lead screw, and a second slider. The second lead screw is threadedly connected to the second slider. The output end of the second drive is connected to the second lead screw. The second slider is fixedly connected to the lifting plate. The limiting assembly includes a second guide rail and a second guide block. The second lead screw is provided with second guide rails on both sides. The lifting plate is provided with one or more sets of second guide blocks on both sides. The second guide blocks are slidably connected to the second guide rails.

[0011] The above setup utilizes a second drive and a second lead screw. The second lead screw has second guide rails on both sides, and two guide blocks are provided on both sides of the lifting plate. When the second drive moves the lifting plate, the second guide blocks move along the direction of the second guide rails, thereby ensuring the verticality and stability of the lifting plate in the vertical direction.

[0012] Furthermore, the driving assembly includes a first drive, a first lead screw, and a first slider. The first slider is threadedly connected to the first lead screw, the output end of the first drive is connected to the first lead screw, and the first slider is fixedly connected to the moving plate. A limit block is provided on one side of the moving plate, and a limit baffle is provided on the side of the lifting plate corresponding to the limit block.

[0013] With the above configuration, the first drive can move the first slider along the direction of the first lead screw. The first slider is fixedly connected to the moving plate, and thus the first drive can move the moving plate. During the upward movement of the lifting platform, the setting of limit baffles and limit blocks can ensure that the lifting platform stops rising when it reaches the set height, and can also prevent damage to other components of the lifting assembly due to the lifting platform being too high.

[0014] Furthermore, the fourth gripping mechanism includes a first support, which is located at one end of the second conveying mechanism and spans across the second conveying mechanism. A fourth three-dimensional module is mounted on the first support, and a fourth gripping device is mounted on the fourth three-dimensional module. Material receiving boxes are mounted on both sides of the first support, with the material receiving box on one side of the first support being a qualified area and the material receiving box on the other side of the first support being a non-qualified area. The fourth gripping device includes two or more first connecting plates, with two or more sets of fourth suction cups mounted on the first connecting plates. The material receiving box includes a base plate, with two or more sets of material receiving components mounted along the length of the base plate. Each set of material receiving components includes two or more sets of placement components, which are arranged side by side along the width of the base plate.

[0015] The above setup involves the fourth three-dimensional group driving the fourth gripping device to move. The fourth gripping device is equipped with a suction cup. When the suction cup picks up the battery cells and places them into the receiving box, the size of the battery cells is adjusted according to actual needs before the suction cup picks them up. The placement component can be used to place the battery cells.

[0016] Furthermore, the placement components are inclined, and there is a gap between adjacent placement components in each set of receiving components. Limiting components are provided on both sides of the placement components. The limiting components include limiting grooves and first limiting blocks. The first limiting block is slidably connected to the limiting grooves. The limiting grooves of two adjacent placement components on opposite sides are staggered along the length direction of the bottom plate. A set of fourth suction cups is provided corresponding to a set of placement components.

[0017] The above configuration includes limiting grooves and first limiting blocks on both sides of the placement component. These limiting grooves and first limiting blocks are slidably connected, allowing adjustment of the distance between the first limiting block and the placement component to accommodate different battery cell sizes. Since multiple sets of fourth suction cups are installed on a single fourth gripping device, multiple sets of small battery cells can be picked up and placed at a time. When the fourth suction cup picks up a small battery cell, the center position of the small battery cell picked up by the fourth suction cup remains unchanged from its position on the placement component. That is, when the size of the small battery cell increases, the first limiting blocks on both sides of the placement component need to move outwards simultaneously. To optimize the space in the receiving box, the limiting grooves on opposite sides of two adjacent placement components along the length of the base plate are staggered to form an avoidance area. This allows the first limiting blocks on the two limiting grooves to move inwards simultaneously. Furthermore, gaps are provided between the placement components of each receiving component, facilitating the gripping of stacked small battery cells through these gaps.

[0018] Furthermore, the placement component includes two support platforms, each with a triangular cross-section, and the two support platforms are spaced apart to form a clearance groove.

[0019] The above setup provides support for placing the battery cells on two support platforms, which are spaced apart and form a clearance groove between them. This clearance groove facilitates the subsequent removal of the battery cells.

[0020] Furthermore, the second detection mechanism includes a frame located on both sides of the second conveying mechanism. A second three-dimensional module is installed on the frame. Two or more sets of detection cameras are installed at the lower end of the second three-dimensional module. The number of detection cameras corresponds to the number of fourth suction cups in the fourth gripping mechanism, and each set of detection cameras detects a set of small battery cells.

[0021] The above settings ensure that one inspection camera can inspect small battery cells separated from the same large battery cell by setting the same number of inspection cameras as the number of fourth suction cups. The number of inspection cameras is set to correspond to the number of fourth suction cups, thereby ensuring that the fourth suction cup can be used to pick up and inspect the small battery cells after inspection based on the inspection cameras.

[0022] Another aspect of the present invention provides a method for scribing photovoltaic cells based on laser non-destructive cutting, the specific steps of which include: S1 First conveying mechanism receives and conveys the material box loaded with large battery cells; The S2 first gripping mechanism grips the large battery cell onto the correction platform; S3 The first inspection mechanism inspects the large battery cell located above the correction platform. First, it inspects the appearance of the battery cell. If it is qualified, the first inspection mechanism and the correction platform determine the positional deviation of the battery cell. The correction platform will adjust the position of the large battery cell according to the positional deviation. Then, the second gripping mechanism moves the adjusted large battery cell to a transfer platform located below the dicing machine and then proceeds to step S5. If it is not qualified, then proceed to step S4. The second gripping mechanism S4 places the defective large battery cells into the waste area, and then proceeds to step S2; The S5 dicing machine dices a large battery cell on a transfer platform to form a group of smaller battery cells. During dicing, the smaller battery cells that have been diced on another transfer platform are moved to the second conveying mechanism by the third gripping mechanism. The other transfer platform is moved to the relative position in an alternating manner with the first transfer platform, thereby transporting the diced smaller battery cells on the first transfer platform to the other side of the second conveying mechanism. The second conveying mechanism (S6) transports the diced small batteries to the area below the second inspection mechanism. The second inspection mechanism performs visual inspection on the diced small battery pieces and determines the positions of unqualified and qualified small battery pieces. Then, the fourth gripping mechanism stacks the qualified small battery pieces into the qualified area and the unqualified small battery pieces into the unqualified area.

[0023] In the above setup, step S1 uses a first conveying mechanism to receive and transport the material box loaded with solar cells, replacing manual handling. This improves the stability and continuity of solar cell transport. Step S2 uses a first gripping mechanism to transfer the solar cells to a correction platform, achieving precise placement and removal of the solar cells, reducing positioning deviations caused by manual operation, and ensuring the reliability of the subsequent gripping by the second gripping mechanism. Step S3 uses a first inspection mechanism to first perform an appearance inspection of the large solar cells, which can screen out defective products before the dicing process. Then, the position of the large solar cells is adjusted to accurately correct their placement, ensuring that the subsequent laser dicing path completely coincides with the preset trajectory, significantly improving dicing accuracy and cutting consistency. Defective products are transferred to the second gripping mechanism. The waste area allows for the timely diversion of defective products, ensuring that subsequent processes only process qualified battery cells. Step S5 uses the third gripping mechanism to transfer the diced small battery cells to the second conveying mechanism, achieving seamless connection between the dicing process and subsequent inspection processes, thus improving the overall efficiency of the process. Step S6 uses the second inspection mechanism to perform a visual re-inspection of the diced small battery cells, effectively identifying defects such as cutting burrs and edge chipping generated during the dicing process. Then, the fourth gripping mechanism sorts and stacks qualified and unqualified small battery cells into their corresponding areas, ensuring the quality of the finished small battery cells and facilitating the centralized recycling and processing of unqualified small battery cells, thus reducing the labor costs of subsequent sorting.

[0024] Furthermore, step S6 also includes step S61. When the second detection mechanism performs appearance inspection on the diced small battery pieces, there are two sets of the second detection mechanism. The small battery pieces are arranged in a matrix on the second conveying mechanism. The small battery pieces arranged along the lateral direction of the second conveying mechanism constitute a set of battery pieces. Each second detection mechanism corresponds to a set of small battery pieces. The second detection mechanism moves on a set of small battery pieces and identifies and determines the position of the qualified small battery pieces and the position of the unqualified battery pieces in the set of small battery pieces. S62 The fourth gripping mechanism activates the corresponding fourth gripping device to grip the defective battery cell according to the location of the defective battery cell in a group of small battery cells, and moves it to the defective area. The S63 fourth gripping mechanism activates the corresponding fourth gripping device based on the position of the qualified small battery cell in a group of small battery cells to grip the qualified battery cell and move it to the qualified area.

[0025] The above setup, by setting up a second detection mechanism with the same number of small battery cell groups, enables the determination of the position of multiple small battery cells in a group of small battery cells. It also enables the visual inspection of multiple groups of small battery cells and the partitioning and stacking of multiple groups of small battery cells inspected at one time, thereby improving the conveying efficiency.

[0026] The beneficial effects of this invention are as follows: The first conveying mechanism receives and transports the material box loaded with large battery cells, replacing manual handling. This improves the stability and continuity of large battery cell transport. The first gripping mechanism transfers the large battery cells to the correction platform, achieving precise placement and removal of the large battery cells, reducing positioning deviations from manual operation, and ensuring the reliability of the subsequent gripping by the second gripping mechanism. The first inspection mechanism performs visual inspection of the large battery cells first, screening out defective products before the dicing process. Adjusting the position of the large battery cells then precisely corrects their placement, ensuring that the subsequent laser dicing path perfectly matches the preset trajectory, significantly improving dicing accuracy and cutting consistency, and guaranteeing that all processed items in subsequent processes are qualified battery cells. The transfer platform enables alternating transport between the dicing machine and the second conveying mechanism. The transfer platforms are vertically offset, thereby enabling… By vertically staggering the transfer platforms, the dicing machine and the second conveyor mechanism alternately transport the dicing plates. When one transfer platform moves to the bottom of the dicing machine to dice, the other transfer platform transports the diced small batteries to one side of the second conveyor mechanism, thereby improving production efficiency. The diced small battery pieces are then transferred to the second conveyor mechanism by the third gripping mechanism, achieving seamless connection between the dicing process and the subsequent inspection process, improving the overall process efficiency. The second inspection mechanism performs a visual re-inspection on the diced small battery pieces, effectively identifying defects such as cutting burrs and edge chipping generated during the dicing process. Then, the fourth gripping mechanism sorts and stacks qualified and unqualified small battery pieces into corresponding areas, ensuring the quality of the finished small battery pieces and facilitating the centralized recycling and processing of unqualified small battery pieces, reducing the labor costs of subsequent sorting. Attached Figure Description

[0027] Figure 1 This is a flowchart of the present invention.

[0028] Figure 2 This is a perspective view of a photovoltaic cell dicing device based on laser non-destructive cutting according to the present invention.

[0029] Figure 3 This is a perspective view of the transfer platform in this invention.

[0030] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0031] Figure 5 This is a partial structural diagram of the transfer platform in this invention after the lifting plate is removed.

[0032] Figure 6 for Figure 5 Enlarged view of section B in the middle.

[0033] Figure 7 for Figure 5 Enlarged view of point C.

[0034] Figure 8 This is a perspective view of the fourth gripping mechanism in this invention.

[0035] Figure 9 This is a perspective view of the receiving component in this invention.

[0036] Figure 10 for Figure 9 Enlarged view of point D in the middle.

[0037] Figure 11 for Figure 10 Enlarged view of point E in the middle.

[0038] Figure 12 This is a schematic diagram of the structure of the correction platform and the second gripping mechanism in this invention.

[0039] Reference numerals: 1a-First conveying mechanism; 2a-Correction platform; 3a-First detection mechanism; 4a-Dictating machine; 5a-Second gripping mechanism; 6a-Second conveying mechanism; 7a-Transfer platform; 8a-Second detection mechanism; 9a-First gripping mechanism; 10a-Third gripping mechanism; 11a-Fourth gripping mechanism; 1-Bracket; 2-Moving plate; 21-Limit block; 22-Second guide rail; 23-First guide block; 3-Lifting plate; 31-Limit baffle; 32-Second guide block; 4-Drive assembly; 41-First lead screw; 42-First motor; 43-First mounting base; 44-First coupling; 45-First guide rail; 5-Lifting assembly; 51-Second motor; 52-Second mounting base; 53-Second coupling; 54-Second slider; 55-Second lead screw; 6-Support plate; 7-Connecting plate; 8-Scibling stage; 81-Placement slot; 1b-First bracket; 11b-Fourth 3D module; 21b-First connecting plate; 211b-Fourth suction cup; 3b-Receiving box; 31b-Receiving assembly; 311b-Placement assembly; 3111b-Support platform; 3112b-Allowing groove; 3113b-Baffle; 4b-Limiting assembly; 41b-First limiting block; 411b-Limiting hole; 42b-Limiting groove; 421b-Waist groove; 6b-Base plate; 81b-Frame; 82b-Detection camera. Detailed Implementation

[0040] Figures 2-12As shown, a photovoltaic cell dicing device based on laser non-destructive cutting includes a first conveying mechanism 1a, a correction platform 2a, a first detection mechanism 3a, a dicing machine 4a, a second gripping mechanism 5a, a second conveying mechanism 6a, a second detection mechanism 8a, a first gripping mechanism 9a, a third gripping mechanism 10a, and a fourth gripping mechanism 11a. The correction platform 2a is located on one side of the first gripping mechanism 9a, and the second gripping mechanism 5a is located between the correction platform 2a and the dicing machine 4a. A transfer platform 7a is provided between the dicing machine 4a and the second conveying mechanism 6a. The correction platform 2a is used to correct the position of the large solar cells conveyed by the first gripping mechanism 9a. The second gripping mechanism 5a conveys the corrected large solar cells onto the transfer platform 7a. Two dicing platforms 8 are set on both sides, and the two dicing platforms 8 are staggered along the vertical direction of the transfer platform 7a. The two dicing platforms 8 move alternately between the dicing machine 4a and the second conveying mechanism 6a. The dicing machine 4a divides the large battery cell located below the dicing machine 4a into two or more small battery cells and moves them to one side of the second conveying mechanism 6a. The third gripping mechanism 10a grips the small battery cells located on the transfer platform 7a located on one side of the second conveying mechanism 6a and transports them to the second conveying mechanism 6a. The second detection mechanism 8a detects the small battery cells located on the second conveying mechanism 6a and determines the position of the unqualified small battery cells and the position of the qualified small battery cells. The fourth gripping mechanism 11a grips the unqualified small battery cells and the qualified small battery cells and stacks them in the corresponding areas.

[0041] like Figure 3-7As shown, the transfer platform 7a includes a support 1. A drive assembly 4 and a movable plate 2 are respectively arranged on both sides of the support 1. A lifting assembly 5 and a lifting plate 3 are arranged on the movable plate 2. The lifting assembly 5 includes a second drive, a second lead screw 55, and a second slider 54. The second lead screw 55 and the second slider 54 are rotatably connected. The output end of the second drive is connected to the second lead screw 55. The second slider 54 is fixedly connected to the lifting plate 3. Second guide rails 22 are arranged on both sides of the second lead screw 55. One or more sets of second guide blocks 32 are arranged on both sides of the lifting plate 3. The second guide blocks 32 are slidably connected to the second guide rails 22. A connecting plate 7 is arranged on one side of the lifting plate 3. The connecting plate 7 is connected to the dicing stage 8. Support plates 6 are evenly arranged between the connecting plate 7 and the lifting plate 3. The plate stage 8 is provided with one or more placement slots 81. The support 1 is provided with drive components 4 on both sides. The drive components 4 can drive the moving plate 2 to move in the horizontal direction. The moving plate 2 is provided with a second drive and a second lead screw 55. The second lead screw 55 is provided with a second guide rail 22 on both sides. The lifting plate 3 is provided with two guide blocks on both sides. When the second drive drives the lifting plate 3 to move, the second guide block 32 moves along the direction of the second guide rail 22, thereby ensuring the verticality and stability of the lifting plate 3 in the vertical direction. By driving the lifting plate 3 to move through the second drive, the dicing stages located on both sides of the support 1 are staggered in the vertical direction of the support 1, so that the two dicing stages can move alternately along the length of the support 1.

[0042] One side of the connecting plate 7 is connected to the lifting plate 3, and the other side of the connecting plate 7 is connected to the dicing table 8. The connecting plate 7 can increase the connection area between the lifting plate 3 and the dicing table 8, which helps to distribute the load. In addition, support plates 6 are evenly arranged between the connecting plate 7 and the lifting plate 3. The arrangement of support plates 6 increases the contact area between the connecting plate 7 and the lifting plate 3, thereby increasing the connection strength between the connecting plate 7 and the lifting plate 3. It also helps to maintain the stability of the dicing table 8 in the horizontal direction and prevents the dicing table 8 from tilting or overturning in the horizontal direction. In this embodiment, two placement slots 81 are provided on the dicing table 8. Each placement slot 81 can hold one large battery cell, that is, two large battery cells can be transported at one time, which speeds up the transport efficiency.

[0043] like Figure 6 and Figure 7 As shown, the drive assembly 4 includes a first drive, a first lead screw 41, and a first slider (not shown in the figure). The first slider (not shown in the figure) is rotatably connected to the first lead screw 41. The output end of the first drive is connected to the first lead screw 41. The first slider (not shown in the figure) is fixedly connected to the moving stage. The first drive can drive the first slider (not shown in the figure) to move along the direction of the first lead screw 41. The first slider (not shown in the figure) is fixedly connected to the moving plate 2, and thus the first drive can drive the moving plate 2 to move.

[0044] The first drive includes a first motor 42, a first mounting base 43, and a first coupling 44. The first mounting base 43 is fixedly connected to the bracket 1, and the first motor 42 is fixedly connected to the first mounting base 43. The output end of the first motor 42 is connected to the first lead screw 41 through the first coupling 44. The first mounting base 43 is fixedly connected to the bracket 1, and the first motor 42 is fixedly connected to the first mounting base 43, forming a stable connection structure that helps reduce vibration and displacement of the motor during operation. The first motor 42 is directly connected to the first lead screw 41 through the first coupling 44, reducing energy loss in the intermediate transmission links. The first coupling 44 helps to alleviate the vibration and impact force generated by the first motor 42 during operation, ensuring the stability of the moving plate 2 in the horizontal direction.

[0045] like Figure 4 As shown, a limit block 21 is provided on one side of the movable plate 2, and a limit baffle 31 is provided on the opposite side of the lifting plate 3 to the limit block 21. During the upward movement of the lifting plate 3, the limit baffle 31 and the limit block 21 can be used to ensure that the lifting plate 3 stops rising when it reaches the set height, and can also prevent damage to other parts of the lifting assembly 5 due to the lifting plate 3 being too high.

[0046] like Figure 6-7 As shown, the first lead screw 41 is provided with first guide rails 45 on both sides, and the moving plate 2 is provided with a first guide block 23. The first guide block 23 is slidably connected to the first guide rail 45. When the first motor 42 drives the moving plate 2 to move, the first guide block 23 and the first guide rail 45 can provide a clear movement path for the moving plate 2, ensuring the straightness of the movement, and can resist the influence of external forces on the moving plate 2 during the movement, ensuring the stability of the moving plate 2.

[0047] The second drive includes a second motor 51, a second mounting base 52, and a second coupling 53. The second mounting base 52 is fixedly connected to the moving plate 2, and the second motor 51 is fixedly connected to the second mounting base 52. The output end of the second motor 51 is connected to the second lead screw 55 through the second coupling 53. The second mounting base 52 is fixedly connected to the moving plate 2, and the second motor 51 is fixedly connected to the second mounting base 52, forming a stable connection structure that helps reduce vibration and displacement of the motor during operation. The second motor 51 is directly connected to the second lead screw 55 through the second coupling 53, reducing energy loss in the intermediate transmission links. The second coupling 53 helps to alleviate the vibration and impact force generated by the first motor 42 during operation, ensuring the stability of the lifting plate 3 in the horizontal direction.

[0048] One side of the support plate 6 is connected to the connecting plate 7, and the other side of the support plate 6 is connected to the lifting plate 3. As an intermediate component between the connecting plate 7 and the lifting plate 3, when the connecting plate 7 or the lifting plate 3 is subjected to external force, the support plate 6 can distribute the external force evenly to the overall structure, thereby reducing structural deformation or damage caused by excessive local stress, and thus providing better load-bearing capacity and shear resistance.

[0049] The connecting plate 7 is connected to the middle of the dicing stage 8. The connection between the connecting plate 7 and the middle of the dicing stage 8 can increase the bending resistance of the dicing stage 8 and help improve the stability of the dicing stage 8.

[0050] like Figure 8 and Figures 9-10As shown, the fourth gripping mechanism includes a first support 1b, which is located at one end of the second conveying mechanism 6a and spans across the second conveying mechanism. Receiving boxes 3b are provided on both sides of the first support 1b. The receiving box 3b on one side of the first support 1b is the qualified area, and the receiving box 3b on the other side of the first support 1b is the unqualified area. A fourth three-dimensional module 11b is provided on the first support 1b, and a fourth gripping device is provided on the fourth three-dimensional module 11b. The fourth three-dimensional module 11b allows the fourth gripping device to move laterally and longitudinally. The fourth gripping device includes two or more first connecting plates 21b, and the first connecting plates 21b are provided with... Two or more sets of fourth suction cups 211b are provided, each set of fourth suction cups 211b corresponding to a receiving box 3b. The receiving box 3b includes a base plate 6b, and two or more sets of receiving components 31b are provided along the length of the base plate 6b. The receiving components 31b include two or more sets of placement components 311b, which are arranged side by side along the width of the base plate 6b. Each set of placement components 311b has limiting components 4b on both sides. The limiting components 4b include a limiting groove 42b and a first limiting block 41b, which are slidably connected to the limiting groove 42b. The fourth suction cups 211b are correspondingly provided with the placement components 311b, and the material is collected by... The fourth 3D module 11 drives the fourth gripping device to move horizontally and vertically. The fourth gripping device is equipped with four fourth suction cups 211b. When the fourth suction cups 211b pick up the battery cells and place them into the receiving box 3b, the size of the small battery cells is adjusted according to actual needs before being picked up by the fourth suction cups 211b. The placement component 311b can be used to place the small battery cells. The placement component 311b has limiting grooves 42b and first limiting blocks 41b on both sides. The limiting grooves 42b and first limiting blocks 41b are slidably connected, thereby adjusting the distance between the first limiting block 41b and the placement component 311b. To meet the needs of different small battery cell sizes, when the fourth suction cup 211b picks up the small battery cell, the center position of the small battery cell picked up by the fourth suction cup 211b and the center position of the small battery cell placed in the placement component 311b remain unchanged. That is, when the size of the small battery cell increases, the first limiting blocks 41b on both sides of the placement component 311b need to move outward simultaneously. The arrangement and number of the fourth suction cup 211b correspond to the placement component 311b on the receiving box 3b. In this embodiment, the fourth gripping device is equipped with four fourth suction cups, each group of small battery cells is equipped with two small battery cells, and each receiving box is equipped with four placement components 311b.

[0051] like Figure 8As shown, the fourth three-dimensional module 11b includes a horizontal fourth three-dimensional module and a vertical fourth three-dimensional module. The horizontal fourth three-dimensional module includes a horizontal movement drive motor and a horizontal movement block. In this embodiment, the horizontal movement drive motor drives the conveyor belt to move, and the horizontal movement block is fixed on the conveyor belt to drive the horizontal movement block to move. The vertical fourth three-dimensional module includes a vertical movement motor, which is set on the horizontal movement block. The output end of the vertical movement motor is fixedly connected to the fourth gripping device to realize the vertical movement of the fourth gripping device.

[0052] like Figure 10 As shown, the placement component 311b includes two support platforms 3111b, which are spaced apart to form a clearance groove 3112b. The two support platforms 3111b provide support for the placement of the battery cells, and the clearance groove 3112b between the two support platforms 3111b facilitates the subsequent removal of the battery cells.

[0053] A baffle 3113b is provided at one end opposite to the support platform 3111b. When the fourth suction cup 211b picks up the small battery piece, one end of the small battery piece contacts the support platform 3111b. Then the fourth suction cup 211b stops picking up the small battery piece, and the small battery piece falls naturally along the support platform 3111b by gravity. The baffle 3113b restricts the movable position of the small battery piece, preventing the small battery piece from moving beyond the expected range.

[0054] like Figure 11 As shown, the first limiting block 41b is provided with a fastener and a limiting hole 411b, and the bottom of the limiting groove 42b is provided with a waist groove 421b. The fastener includes a screw and a nut. The screw passes through the limiting hole 411b and out of the waist groove 421b and is connected to the nut.

[0055] When the screw passes through the limiting hole 411b and out of the waist groove 421b to connect with the nut, the first limiting block 41b will not move within the limiting groove 42b. When it is necessary to adjust the position of the first limiting block, the nut is removed, and then the first limiting block 41b is moved so that the first limiting block 41b moves along the limiting groove 42b. When the desired position is reached, the screw is passed through the limiting hole 411b and out of the waist groove 421b to connect with the nut, thus completing the setting of the first limiting block 41b.

[0056] like Figure 10 and Figure 11As shown, the upper ends of the first limiting block 41b, the support platform 3111b, and the baffle 3113b are all chamfered. If the upper ends of the first limiting block 41b, the support platform 3111b, and the baffle 3113b are not chamfered during the placement of the small battery piece by the fourth suction cup 211b, their sharp edges may come into contact with the small battery piece, thereby causing damage to the structure of the small battery piece.

[0057] A handle is provided on one side of the base plate 6b to facilitate adjustment of the position of the base plate 6b.

[0058] like Figure 1 As shown, the second detection mechanism 8a includes frames 81b located on both sides of the second conveying mechanism. A second three-dimensional module is mounted on the frames 81b, and two or more sets of detection cameras 82b are mounted on the lower end of the second three-dimensional module. The number of detection cameras corresponds to the number of fourth suction cups in the fourth gripping mechanism. Each set of detection cameras detects a group of small battery cells. The detection camera 82b acquires an image of each group of small battery cells placed on the second conveying mechanism and compares the image with a preset qualified image. If the similarity is within a preset range, the small battery cell is determined to be qualified; otherwise, it is determined to be unqualified. Simultaneously, as the detection camera 82b moves sequentially along the width direction of the second conveying mechanism, it first passes through a... The small battery pieces then pass through the gap between two small battery pieces and then through another small battery piece. Thus, when an image of the entire battery piece group is acquired, the gap in the image is identified as the middle gap of the group of small battery pieces. Then, the outlines and centers of the small battery pieces on both sides of the gap are identified to determine the position of each small battery piece in each group. For example, if the small battery pieces in a group are arranged from right to left as the first small battery piece, the second small battery piece, etc., the position of each small battery piece can be determined. This allows the fourth gripping device to move onto the corresponding two groups of small battery pieces and control the ventilation on the corresponding fourth suction cup to achieve adsorption of small battery pieces at different positions and transport them to the corresponding areas.

[0059] like Figure 12 As shown, the correction platform 2a includes a base plate, on which a multi-directional drive motor is mounted. The multi-directional drive motor includes a horizontal drive motor, a vertical drive motor, and an angle adjustment drive motor. A platform is mounted on the multi-directional drive motor, and a camera is mounted above the platform. In this embodiment, the correction platform 2a is an existing UVW platform. The method for adjusting the position of the large battery cell placed on the platform is the same as the correction method in Chinese patent application number CN202010761999.7, and will not be described again here. The first conveying mechanism 1a and the second conveying mechanism 6a are existing transmission lines, and the dicing machine 4a is an existing laser cutting machine.

[0060] like Figure 1-12As shown, a method for scribing photovoltaic cells based on laser non-destructive cutting includes the following steps: S1 First conveying mechanism 1a receives and conveys a box loaded with battery cells; S2 uses the first gripping mechanism 9a to grip the battery cell onto the correction platform 2a; S3 The first inspection mechanism 3a inspects the battery cells on the correction platform 2a. First, it inspects the appearance of the battery cells. The first inspection mechanism 3a also acquires an image of the large battery cell through a camera and then compares it with a preset image of the large battery cell to determine whether the appearance of the large battery cell is qualified. If it is qualified, the first inspection mechanism 3a inspects the position of the battery cell. The correction platform 2a determines the adjustment value of the position of the battery cell. Then, the second gripping mechanism 5a moves the large battery cell to a transfer platform located below the dicing machine and then proceeds to step S5. If it is not qualified, then proceeds to step S4. S4 uses the second gripping mechanism 5a to place the defective large battery cell into the waste area, and then proceeds to step S2; The S5 dicing machine dices a large battery cell on a transfer platform 7a to form a group of smaller battery cells. During dicing, the smaller battery cells that have been diced on another transfer platform are moved to the second conveying mechanism by the third gripping mechanism. The other transfer platform and the first transfer platform are moved to the relative position in an alternating manner, thereby transporting the diced smaller battery cells on the first transfer platform to the other side of the second conveying mechanism 6a. The second conveying mechanism 6a transports the diced small batteries to the area below the second inspection mechanism 8a. The second inspection mechanism 8a performs visual inspection on the diced small battery pieces and determines the positions of unqualified and qualified small battery pieces. Then, the fourth gripping mechanism stacks the qualified small battery pieces into the qualified area and the unqualified small battery pieces into the unqualified area.

[0061] Step S6 also includes step S61. When performing visual inspection on the diced small battery cells by the second inspection mechanism 8a, there are two sets of the second inspection mechanism 8a. The small battery cells are arranged in a matrix on the second conveying mechanism 6a. The small battery cells arranged along the lateral direction of the second conveying mechanism 6a constitute a set of battery cells. Each second inspection mechanism 8a corresponds to a set of small battery cells. The second inspection mechanism 8a moves on a set of small battery cells and identifies and determines the position of the qualified small battery cells and the position of the unqualified battery cells in the set of small battery cells. S62 The fourth gripping mechanism 11a activates the corresponding fourth gripping device 11a to grip the defective battery cell according to the position of the defective battery cell in a group of small battery cells, and moves it to the defective area; specifically, the fourth three-dimensional module 11b drives the fourth gripping device to move to the corresponding position of the two groups of small battery cells above the second conveying mechanism, and then the air valve connected to the fourth suction nozzle corresponding to the position of the defective battery cell in a group of small battery cells is opened to achieve adsorption of the defective battery cell corresponding to that position.

[0062] S63 The fourth gripping mechanism 11a activates the corresponding fourth gripping device to grip the qualified battery cell according to the position of the qualified battery cell in a group of small battery cells, and moves it to the qualified area.

[0063] In this embodiment, each time two large battery cells are transported to the dicing table, the dicing machine divides each large battery cell into two small battery cells. Then, each time four small battery cells are transported to the second conveying mechanism. The four small battery cells are arranged in a matrix to form two rows and two columns, with each row being a group of small battery cells and each group of small battery cells having two vertically arranged small battery cells.

[0064] The working principle of this invention is as follows: A first conveying mechanism 1a receives and transports the material box loaded with large battery cells, replacing manual handling. This improves the stability and continuity of large battery cell transport. A first gripping mechanism 9a transfers the large battery cells to a correction platform 2a, achieving precise placement and removal of the large battery cells, reducing positioning deviations from manual operation, and ensuring the reliability of subsequent gripping by the second gripping mechanism 10a. A first inspection mechanism 3a performs visual inspection of the large battery cells, screening out defective products before the dicing process. Adjusting the position of the large battery cells precisely corrects their placement, ensuring that the subsequent laser dicing path perfectly matches the preset trajectory, significantly improving dicing accuracy and cutting consistency, and guaranteeing that all processed objects in subsequent processes are qualified large battery cells. A transfer platform 7a enables alternating transport between the dicing machine and the second conveying mechanism 6a, with the transfer platforms 7a vertically offset. This allows for alternating transport between the dicing machine and the second conveying mechanism 6a by vertically staggering the transport. When one transfer platform 7a moves below the dicing machine for dicing, the other transfer platform 7a transports the diced small batteries to one side of the second conveying mechanism, thereby improving production efficiency. The diced small battery pieces are then transferred to the second conveying mechanism 6a by the third gripping mechanism 10a, achieving seamless connection between the dicing process and subsequent inspection processes, thus improving the overall process efficiency. The second inspection mechanism 8a performs a visual re-inspection of the diced small battery pieces, effectively identifying defects such as cutting burrs and edge chipping generated during the dicing process. The fourth gripping mechanism then sorts and stacks qualified and unqualified small battery pieces into corresponding areas, ensuring the quality of the finished small battery pieces and facilitating the centralized recycling and processing of unqualified small battery pieces, reducing the labor costs of subsequent sorting.

Claims

1. A laser-based non-destructive cutting photovoltaic cell dicing device, comprising a first conveying mechanism, a first grabbing mechanism and a dicing machine, a second conveying mechanism, characterized in that: It also includes a first inspection mechanism, a correction platform, a second gripping mechanism, a third gripping mechanism, and a fourth gripping mechanism. The correction platform is located to one side of the first gripping mechanism, and the second gripping mechanism is located between the correction platform and the dicing machine. A transfer platform is provided between the dicing machine and the second conveying mechanism. The correction platform is used to correct the position of the large battery cells conveyed by the first gripping mechanism. The second gripping mechanism conveys the corrected large battery cells to the transfer platform. Dicing tables are provided on both sides of the transfer platform, and the two dicing tables are staggered along the vertical direction of the transfer platform. A dicing stage moves alternately between the dicing machine and the second conveying mechanism. The dicing machine divides the large battery cell located below the dicing machine into two or more smaller battery cells and moves them to one side of the second conveying mechanism. The third gripping mechanism grabs the smaller battery cells located on the transfer platform on one side of the second conveying mechanism and transports them to the second conveying mechanism. The second inspection mechanism inspects the smaller battery cells located on the second conveying mechanism and determines the positions of the unqualified smaller battery cells and the qualified smaller battery cells. The fourth gripping mechanism grabs the unqualified smaller battery cells and the qualified smaller battery cells and stacks them in the corresponding areas. The transfer platform includes a support frame, with a drive assembly and a moving plate respectively arranged on both sides of the support frame. A dicing machine is arranged at one end of the support frame, and a second conveying mechanism is arranged on one side of the other end of the support frame. The drive assembly is used to drive the moving plate to move along the length direction of the support frame. A lifting assembly and a lifting plate are arranged on the moving plate. The lifting assembly includes a second drive assembly and a limiting assembly. The second drive assembly is located in the middle of the lifting plate, and the limiting assemblies are located on both sides of the second drive assembly. The lifting assembly drives the lifting plate to move in the vertical direction of the support frame. A connecting plate is arranged on one side of the lifting plate, and one side of the connecting plate is connected to the dicing platform. One or more support plates are evenly arranged between the other side of the connecting plate and the lifting plate. One side of the support plate is fixedly connected to the connecting plate, and the other side of the support plate is fixedly connected to the lifting plate. Two or more placement slots are arranged on the dicing platform. 2.The photovoltaic cell dicing device based on laser non-destructive cutting according to claim 1, wherein: The second drive assembly includes a second drive, a second lead screw, and a second slider. The second lead screw is threadedly connected to the second slider. The output end of the second drive is connected to the second lead screw. The second slider is fixedly connected to the lifting plate. The limiting assembly includes a second guide rail and a second guide block. The second lead screw is provided with second guide rails on both sides. The lifting plate is provided with one or more sets of second guide blocks on both sides. The second guide blocks are slidably connected to the second guide rails. 3.The photovoltaic cell dicing device based on laser non-destructive cutting according to claim 1, wherein: The driving assembly includes a first drive, a first lead screw, and a first slider. The first slider is threadedly connected to the first lead screw, the output end of the first drive is connected to the first lead screw, and the first slider is fixedly connected to the moving plate. A limit block is provided on one side of the moving plate, and a limit baffle is provided on the side of the lifting plate corresponding to the limit block.

4. The photovoltaic cell dicing equipment based on laser non-destructive cutting according to claim 1, characterized in that: The fourth gripping mechanism includes a first support, which is located at one end of the second conveying mechanism and spans across the second conveying mechanism. A fourth three-dimensional module is mounted on the first support, and a fourth gripping device is mounted on the fourth three-dimensional module. Material receiving components are mounted on both sides of the first support. The material receiving box on one side of the first support is a qualified area, and the material receiving box on the other side of the first support is a defective area. The fourth gripping device includes two or more first connecting plates, and two or more sets of fourth suction cups are mounted on the first connecting plates. The material receiving box includes a base plate, and two or more sets of material receiving components are mounted along the length of the base plate. Each set of material receiving components includes two or more sets of placement components, which are arranged side by side along the width of the base plate.

5. A photovoltaic cell dicing device based on laser non-destructive cutting according to claim 4, characterized in that: The placement components are inclined, and there is a gap between adjacent placement components in each set of receiving components. Limiting components are provided on both sides of the placement components. The limiting components include limiting grooves and first limiting blocks. The first limiting block is slidably connected to the limiting grooves. The limiting grooves of two adjacent placement components on opposite sides are staggered along the length direction of the base plate. A set of fourth suction cups is provided corresponding to a set of placement components.

6. A photovoltaic cell dicing device based on laser non-destructive cutting according to claim 5, characterized in that: The placement assembly includes two support platforms, each with a triangular cross-section, and the two support platforms are spaced apart to form a clearance groove.

7. A photovoltaic cell dicing device based on laser non-destructive cutting according to claim 4, characterized in that: The second detection mechanism includes frames located on both sides of the second conveying mechanism. A second three-dimensional module is installed on the frame. Two or more sets of detection cameras are installed at the lower end of the second three-dimensional module. The number of detection cameras corresponds to the number of fourth suction cups in the fourth gripping mechanism, and each set of detection cameras detects a set of small battery cells.

8. A method for scribing photovoltaic cells based on laser non-destructive cutting, implemented using a photovoltaic cell scribing device based on laser non-destructive cutting as described in any one of claims 1-7, characterized in that: Includes the following steps: S1 First conveying mechanism receives and conveys the material box loaded with large battery cells; The S2 first gripping mechanism grips the large battery cell onto the correction platform; S3 The first inspection mechanism inspects the large battery cell located above the correction platform. First, it inspects the appearance of the battery cell. If it is qualified, the first inspection mechanism and the correction platform determine the positional deviation of the battery cell. The correction platform will adjust the position of the large battery cell according to the positional deviation. Then, the second gripping mechanism moves the adjusted large battery cell to a transfer platform located below the dicing machine and then proceeds to step S5. If it is not qualified, then proceed to step S4. The second gripping mechanism S4 places the defective large battery cells into the waste area, and then proceeds to step S2; The S5 dicing machine dices a large battery cell on a transfer platform to form a group of smaller battery cells. During dicing, the smaller battery cells that have been diced on another transfer platform are moved to the second conveying mechanism by the third gripping mechanism. The other transfer platform is moved to the relative position in an alternating manner with the first transfer platform, thereby transporting the diced smaller battery cells on the first transfer platform to the other side of the second conveying mechanism. The second conveying mechanism (S6) transports the diced small battery pieces to the area below the second inspection mechanism. The second inspection mechanism performs visual inspection on the diced small battery pieces and determines the positions of unqualified and qualified small battery pieces. Then, the fourth gripping mechanism stacks the qualified small battery pieces into the qualified area and the unqualified small battery pieces into the unqualified area.

9. A method for scribing photovoltaic cells based on laser non-destructive cutting according to claim 8, characterized in that: Step S6 also includes step S61. When the second detection mechanism performs appearance inspection on the diced small battery pieces, there are two sets of the second detection mechanism. The small battery pieces are arranged in a matrix on the second conveying mechanism. The small battery pieces arranged along the lateral direction of the second conveying mechanism constitute a set of battery pieces. Each second detection mechanism corresponds to a set of small battery pieces. The second detection mechanism moves on a set of small battery pieces and identifies and determines the position of the qualified small battery pieces and the position of the unqualified small battery pieces in the set of small battery pieces. S62 The fourth gripping mechanism activates the corresponding fourth gripping device to grip the defective battery cell according to the location of the defective battery cell in a group of small battery cells, and moves it to the defective area. The S63 fourth gripping mechanism activates the corresponding fourth gripping device based on the position of the qualified small battery cell in a group of small battery cells to grip the qualified battery cell and move it to the qualified area.

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