Adaptive turning device for photovoltaic modules based on el vision detection

Abstract

The application relates to the field of photovoltaic module detection, and discloses a photovoltaic module self-adaptive turnover device based on EL visual detection, which comprises a first conveying table and a second conveying table, which are symmetrically and parallelly distributed; a turnover mechanism is installed between the first conveying table and the second conveying table and is used for realizing the turnover operation of the photovoltaic module; conveying mechanisms are arranged in two groups and are arranged on the top surfaces of the first conveying table and the second conveying table respectively and are used for conveying the photovoltaic module; a first EL visual detection mechanism is installed above the first conveying table and is used for detecting the surface of the photovoltaic module before the photovoltaic module enters the turnover mechanism; and a second EL visual detection mechanism is installed above the second conveying table; the application integrates the conveying, turnover and double-face detection functions, realizes the continuous operation of the photovoltaic module from the front detection, automatic turnover to the back detection, does not need manual intervention, greatly improves the detection efficiency, and greatly improves the detection efficiency compared with the traditional manual turnover.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module inspection, and in particular to an adaptive flipping device for photovoltaic modules based on EL vision inspection. Background Technology

[0002] During the production and testing of photovoltaic (PV) modules, EL (electroluminescence) testing is required on both sides of the modules to detect defects such as microcracks, poor soldering, and broken grids. Currently, traditional PV module flipping inspections mostly use semi-automated flipping equipment, but these devices still have many shortcomings: they generally lack adaptive adjustment capabilities, making it difficult to flexibly accommodate PV modules of different sizes and thicknesses, resulting in poor versatility. Furthermore, the connection design between the flipping and testing mechanisms has shortcomings, making it easy for PV modules to shift position after flipping, directly affecting the accuracy of subsequent testing. At the same time, these devices lack an integrated double-sided testing and flipping linkage mechanism, leading to a disconnect between the testing and flipping processes and low overall testing efficiency. In addition, the flipping structure of some devices lacks stability, which can easily cause scratches or structural damage to the PV module surface during operation. Utility Model Content

[0003] To address the above issues, this application provides an adaptive flipping device for photovoltaic modules based on EL visual inspection.

[0004] The photovoltaic module adaptive flipping device based on EL vision inspection provided in this application adopts the following technical solution: An adaptive flipping device for photovoltaic modules based on EL vision inspection includes: a first conveyor platform and a second conveyor platform, symmetrically and parallelly distributed; a flipping mechanism installed between the first and second conveyor platforms for flipping photovoltaic modules; two sets of conveying mechanisms, respectively located on the top surfaces of the first and second conveyor platforms, for conveying photovoltaic modules; a first EL vision inspection mechanism installed above the first conveyor platform for inspecting the surface of the photovoltaic modules before they enter the flipping mechanism; and a second EL vision inspection mechanism installed above the second conveyor platform for inspecting the surface of the photovoltaic modules after they have been flipped by the flipping mechanism.

[0005] Preferably, the flipping mechanism includes a first upright plate and a third upright plate, which are parallel and symmetrically distributed along the width direction of the first conveyor table; The roller is horizontally mounted between the first and third vertical plates; Multiple insertion ports are provided, and are equidistantly spaced in a circular pattern on the outer wall of the roller shaft; Two circular sleeve plates are provided, which are respectively sleeved on both ends of the roller shaft. The outer wall of the sleeve plate has a slot corresponding to each insertion port, and the slot is connected to the insertion port.

[0006] Preferably, it also includes limiting rings, two of which are respectively sleeved on both ends of the roller shaft and fixed to the opposite side of the two circular sleeves. The opening of the limiting ring is locked by bolts.

[0007] Preferably, it also includes a speed reducer, which is installed on the side of the third vertical plate away from the roller shaft, and its output end is fixedly connected to one end of the roller shaft; The second vertical plate is installed parallel to the third vertical plate on the side away from the reducer; The drive motor is fixedly mounted on the second vertical plate, and its output end is connected to the input end of the reducer.

[0008] Preferably, the conveying mechanism includes four connecting plates, which are respectively fixed at the four corners of the top surface of the conveying table; The bidirectional threaded rod and the slide rod are mounted parallel to each other along the width of the conveyor table between the corresponding two connecting plates; The movable plate is provided in four parts, two of which are sleeved on the threaded sections at both ends of the bidirectional threaded rod, and the other two are sleeved on both ends of the slide rod; Two side plates are provided, which are respectively fixed to the top surfaces of the two movable plates distributed along the length of the conveyor table; The belt conveyor assembly is provided in two sets, which are assembled in parallel on the opposite side of the two side plates.

[0009] Preferably, it also includes an adjusting motor, which is sleeved on one end of the bidirectional threaded rod and fixed to the connecting plate; There are two bidirectional pulleys, which are respectively fitted onto the other end of the bidirectional threaded rod and the other end of the slide rod. The two bidirectional pulleys are connected by belt drive.

[0010] Preferably, an elastic cushioning pad is attached to the inner wall of the socket, and the elastic cushioning pad is made of silicone.

[0011] In summary, this application includes the following beneficial technical effects: 1. Achieve seamless integration of conveying, adaptive flipping, and double-sided EL inspection. The conveying mechanism positions and transports the components to the inspection area for inspection. After inspection, it precisely connects to the flipping mechanism, flips the components, and then transfers them to the next inspection area. The entire process requires no manual intervention. Compared with traditional semi-automated equipment, the continuity of the inspection process is improved, and the overall inspection efficiency is increased. 2. The conveying mechanism is driven by a two-way threaded rod and a belt pulley, which can flexibly adjust the distance between the two side plates to accommodate photovoltaic modules of different widths. The flipping mechanism adopts a roller shaft with a slot and socket design to limit the photovoltaic modules at multiple points. The inner wall of the socket is equipped with an elastic buffer pad. The drive motor drives the roller shaft to rotate at a constant speed through a reducer, making the flipping process smooth and avoiding module displacement or damage, thus greatly improving the flipping qualification rate. Attached Figure Description

[0012] Figure 1 This is a structural front view of an embodiment of the application; Figure 2 This is a structural side view of an embodiment of the application; Figure 3 This is a schematic diagram of the flipping mechanism in the embodiment of the application; Figure 4 This is a schematic diagram of the conveying mechanism in the embodiment of the application.

[0013] Explanation of reference numerals in the attached drawings: 1. First conveyor table; 2. Side plate; 3. Belt conveyor assembly; 4. First EL vision inspection mechanism; 5. Flipping mechanism; 6. Second conveyor table; 7. Second EL vision inspection mechanism; 8. First upright plate; 9. Second upright plate; 10. Third upright plate; 11. Drive motor; 12. Reducer; 13. Insert; 14. Roller; 15. Slot; 16. Limiting ring; 17. Circular sleeve plate; 18. Connecting plate; 19. Bidirectional threaded rod; 20. Moving plate; 21. Pulley; 22. Slide rod. Detailed Implementation

[0014] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0015] This application discloses an adaptive flipping device for photovoltaic modules based on EL vision detection, referring to... Figure 1 The system includes a first conveyor platform 1 and a second conveyor platform 6, which are symmetrically and parallelly distributed to form a continuous conveying path for photovoltaic modules. A flipping mechanism 5 is installed between the first conveyor platform 1 and the second conveyor platform 6 to receive the photovoltaic modules conveyed by the first conveyor platform 1 and complete the 180° flipping operation, and then convey the flipped photovoltaic modules to the second conveyor platform 6. The conveying mechanism has two sets, which are respectively assembled on the top surfaces of the first conveyor platform 1 and the second conveyor platform 6 to achieve stable conveying and adaptive positioning of the photovoltaic modules. A first EL vision inspection mechanism 4 is installed above the first conveyor platform 1 through a height-adjustable bracket to detect front defects of the photovoltaic modules before they enter the flipping mechanism 5. A second EL vision inspection mechanism 7 is installed above the second conveyor platform 6 through a height-adjustable bracket to detect reverse defects of the photovoltaic modules after they have been flipped by the flipping mechanism 5.

[0016] Both the first EL vision inspection unit 4 and the second EL vision inspection unit 7 include an industrial camera, an EL light source, and an image processor. The shooting angle of the industrial camera is adjustable, the brightness of the EL light source can be adaptively adjusted according to the inspection requirements, and the image processor is connected to the industrial camera signal for real-time analysis of defect information of photovoltaic modules.

[0017] Reference Figures 1-3The flipping mechanism 5 includes a first upright plate 8 and a third upright plate 10, which are parallel and symmetrically distributed along the width direction of the first conveyor table 1. The bottom is fixed to the ground foundation. The roller shaft 14 is horizontally mounted between the first upright plate 8 and the third upright plate 10. Both ends are rotatably connected to the upright plates through bearings. Multiple insertion ports 13 are provided, which are circumferentially and equidistantly opened on the outer wall of the roller shaft 14. The width of the insertion ports 13 is adapted to the thickness of the photovoltaic module and is used to insert and receive the photovoltaic module. Two circular sleeve plates 17 are provided, which are respectively fitted on both ends of the roller shaft 14. The outer wall of the sleeve plates 17 has slots 15 that correspond one-to-one with each insertion port 13. The slots 15 are connected to the insertion ports 13 and are used to limit the ends of the photovoltaic modules. Two limiting rings 16 are provided, which are respectively fitted on both ends of the roller shaft 14 and are fixed to the opposite side of the two circular sleeve plates 17. The opening of the limiting rings 16 is locked with bolts to prevent the circular sleeve plates 17 from sliding along the axial direction of the roller shaft 14.

[0018] An elastic buffer pad is attached to the inner wall of socket 13. The elastic buffer pad is made of silicone and is 2-5mm thick. It is used to avoid damage caused by hard contact between the photovoltaic module and socket 13.

[0019] The reducer 12 is installed on the side of the third vertical plate 10 away from the roller 14. Its output end is fixedly connected to one end of the roller 14 via a coupling. The second vertical plate 9 is installed parallel to the side of the third vertical plate 10 away from the reducer 12. Its bottom is fixed to the ground foundation. The drive motor 11 is fixedly installed on the second vertical plate 9. Its output end is connected to the input end of the reducer 12 via a coupling. It is used to provide power for the rotation of the roller 14. The reduction ratio of the reducer 12 is 1:50 to ensure that the rotation speed of the roller 14 is stable and to prevent the component from shifting due to centrifugal force. The limiting ring 16 is locked with bolts. The spacing of the circular sleeve 17 can be adjusted according to the length of the component to further improve the limiting effect.

[0020] Reference Figure 1 and Figure 4The conveying mechanism includes four connecting plates 18, which are fixed at the four corners of the top surface of the conveying platform to form a rectangular mounting frame. Two bidirectional threaded rods 19 and sliding rods 22 are mounted parallel to each other between corresponding connecting plates 18 along the width of the conveying platform. The two ends of the bidirectional threaded rods 19 are rotatably connected to the connecting plates 18 via bearings, and the two ends of the sliding rods 22 are fixedly connected to the connecting plates 18. Four movable plates 20 are provided, two of which are fitted onto the threaded sections at both ends of the bidirectional threaded rods 19, and the other two are fitted onto the two ends of the sliding rods 22. The movable plates 20 are threadedly engaged with the bidirectional threaded rods 19 and slidably engaged with the sliding rods 22. Two side plates 2 are provided, fixed to the top surfaces of the two movable plates 20 distributed along the length of the conveying platform. The length of the side plates 2 is adapted to the length of the conveying platform. Two sets of belt conveyor assemblies 3 are provided, parallelly assembled on opposite sides of the two side plates 2. The belt conveyor assemblies 3 include a conveyor belt, a drive roller, and a driven roller. The drive roller is driven by a built-in motor to move the photovoltaic modules along the conveying direction.

[0021] An adjusting motor is fitted onto one end of the bidirectional threaded rod 19 and fixed to the connecting plate 18 to drive the bidirectional threaded rod 19 to rotate. Two bidirectional pulleys 21 are provided, respectively fitted onto the other end of the bidirectional threaded rod 19 and one end of the slide bar 22. The two bidirectional pulleys 21 are connected by belt drive to realize the synchronous movement of the bidirectional threaded rod 19 and the slide bar 22. The threads at both ends of the bidirectional threaded rod 19 have opposite directions. When rotating, they drive the two side moving plates 20 to move synchronously in opposite directions to ensure that the side plates 2 move in parallel and that the components do not deviate during the conveying process. The built-in motor of the belt conveyor assembly 3 adopts frequency conversion control and can adjust the conveying speed according to the detection requirements.

[0022] The implementation principle of the photovoltaic module adaptive flipping device based on EL vision detection in this application embodiment is as follows: Adaptive adjustment: Based on the size of the photovoltaic module to be inspected, start the adjustment motor to drive the bidirectional threaded rod 19 to rotate. Through the bidirectional pulley 21 and belt, drive the slide bar 22 to rotate synchronously, so that the moving plate 20 drives the side plate 2 to move along the width direction of the conveyor table. Adjust the spacing between the two sets of belt conveyor modules 3 to match the width of the module. At the same time, adjust the support height of the EL vision inspection mechanism and the camera shooting angle to ensure that the inspection range covers the surface of the module. Front inspection: The photovoltaic module is placed on the belt conveyor 3 of the first conveyor table 1. The belt conveyor 3 is started and moves the module towards the flipping mechanism 5. When the module passes under the first EL vision inspection mechanism 4, the EL light source is turned on and the industrial camera takes a picture of the front of the module. The image processor analyzes and records the front defect information in real time. Flipping operation: The photovoltaic module continues to move to the roller 14 of the flipping mechanism 5, and the end of the module is inserted into the insertion port 13 and slot 15. The elastic buffer pad buffers and limits the module; the adjustment motor stops, the drive motor 11 starts, and drives the roller 14 to rotate 180° at a constant speed through the reducer 12 to complete the flipping of the photovoltaic module. Reverse inspection: After being flipped over, the photovoltaic module is transported to the belt conveyor assembly 3 of the second conveyor table 6 by the rotation of the roller 14. The belt conveyor assembly 3 drives the module to continue moving. When it passes under the second EL vision inspection mechanism 7, the reverse defect inspection is completed. Output: The photovoltaic modules that have completed the inspection are output through the second conveyor 6, realizing the closed loop of the entire inspection process.

[0023] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0024] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. Photovoltaic module adaptive turner based on EL vision detection, characterized in that, include: The first conveyor platform (1) and the second conveyor platform (6) are symmetrically and parallelly distributed on the left and right sides; A flipping mechanism (5) is installed between the first conveyor table (1) and the second conveyor table (6) to realize the flipping operation of photovoltaic modules; The conveying mechanism is provided in two sets, which are respectively set on the top surface of the first conveying platform (1) and the second conveying platform (6) for conveying photovoltaic modules; The first EL vision inspection mechanism (4) is installed above the first conveyor (1) and is used to inspect the surface of the photovoltaic module before it enters the flipping mechanism (5); The second EL vision inspection mechanism (7) is installed above the second conveyor (6) and is used to inspect the surface of the photovoltaic module after it has been flipped by the flipping mechanism (5).

2. The photovoltaic module adaptive tumbler based on EL vision detection according to claim 1, characterized in that: The flipping mechanism (5) includes a first vertical plate (8) and a third vertical plate (10), which are parallel and symmetrically distributed along the width direction of the first conveyor table (1); The roller (14) is horizontally mounted between the first vertical plate (8) and the third vertical plate (10); Multiple insertion ports (13) are provided and are equidistantly arranged in a circular shape on the outer wall of the roller (14); Two circular sleeve plates (17) are provided, which are respectively sleeved on both ends of the roller (14). The outer wall of the sleeve plate is provided with a slot (15) corresponding to each insertion port (13), and the slot (15) is connected to the insertion port (13).

3. The photovoltaic module adaptive tumbler based on EL vision detection of claim 2, wherein: It also includes limiting rings (16), two of which are respectively sleeved on both ends of the roller shaft (14) and fixed to the opposite side of the two circular sleeves (17). The opening of the limiting rings (16) is locked by bolts.

4. The photovoltaic module adaptive tumbler based on EL vision detection of claim 3, wherein: It also includes a speed reducer (12), which is installed on the side of the third vertical plate (10) away from the roller shaft (14), and its output end is fixedly connected to one end of the roller shaft (14); The second vertical plate (9) is installed parallel to the side of the third vertical plate (10) away from the reducer (12); The drive motor (11) is fixedly installed on the second vertical plate (9), and its output end is connected to the input end of the reducer (12).

5. The photovoltaic module adaptive tilter based on EL vision detection of claim 1, wherein: The conveying mechanism includes four connecting plates (18), which are fixed at the four corners of the top surface of the conveying table. The bidirectional threaded rod (19) and the slide rod (22) are mounted parallel to each other between the two corresponding connecting plates (18) along the width direction of the conveyor table; The movable plate (20) is provided in four parts, two of which are sleeved on the threaded sections at both ends of the bidirectional threaded rod (19), and the other two are sleeved on both ends of the slide rod (22); Two side plates (2) are provided, which are respectively fixed to the top surfaces of the two movable plates (20) distributed along the length of the conveyor table; The belt conveyor assembly (3) is provided in two sets, which are assembled in parallel on opposite sides of the two side plates (2).

6. The photovoltaic module adaptive tumbler based on EL vision detection of claim 5, wherein: It also includes an adjustment motor, which is sleeved on one end of the extension of the bidirectional threaded rod (19) and fixed to the connecting plate (18); Two bidirectional pulleys (21) are provided, which are respectively sleeved on the other end of the bidirectional threaded rod (19) and the one end of the slide rod (22). The two bidirectional pulleys (21) are connected by belt drive.

7. The photovoltaic module adaptive tilter based on EL vision detection of claim 2, wherein: The inner wall of the socket (13) is pasted with an elastic buffer pad made of silica gel material.

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