Photovoltaic module production line

Abstract

The utility model discloses a photovoltaic module production line, which belongs to the technical field of photovoltaic module preparation and comprises a carrier feeding mechanism, a typesetting mechanism, a detection mechanism, a steering transmission mechanism, a flexible film laying mechanism, a glass plate feeding mechanism and an overturning discharging mechanism which are sequentially arranged. Accurate caching of the undetected carrier can be realized, the influence of the undetected carrier on the normal production process of the photovoltaic module is avoided, and high-precision and high-efficiency production of the photovoltaic module is realized. According to the photovoltaic module production line, the production precision and the preparation efficiency of the photovoltaic module can be effectively ensured, the productivity of the photovoltaic module is improved, and the production and application cost of the photovoltaic module is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic module manufacturing technology, specifically relating to a photovoltaic module production line. Background Technology

[0002] In the conventional manufacturing process of solar modules, welding strips are generally used to conduct electricity between solar cells. However, when welding strips are used to conduct electricity between solar cells, separate equipment is usually required for feeding, cutting, alignment, and placement of the welding strips, resulting in a large number of additional equipment in the production line and complex processes.

[0003] To address the issues arising from the use of solder strips to connect solar cells in existing technologies, conductive backsheets are used to connect the cells instead of solder strips. However, this method is not yet in mass production and still suffers from drawbacks such as requiring a large amount of equipment and occupying significant factory space, which hinders the increase of photovoltaic module production capacity within limited factory space.

[0004] Furthermore, during the production of photovoltaic modules, multiple cells after being arranged need to be inspected to ensure the precision of the photovoltaic module manufacturing and reduce the defect rate of the photovoltaic module products. Therefore, how to facilitate rework after inspection while reducing equipment complexity becomes a problem that needs to be solved. Utility Model Content

[0005] In response to one or more of the above-mentioned defects or improvement needs of the existing technology, this utility model provides a photovoltaic module production line that can accurately manufacture photovoltaic modules and rework unqualified items after cell loading and inspection. While ensuring smooth operation of the production line, it reduces the complexity of the production line, reduces the use of additional equipment and the occupation of additional factory space, and fully improves the efficiency and quality of photovoltaic module production.

[0006] To achieve the above objectives, this utility model provides a photovoltaic module production line, which includes a carrier feeding mechanism, a layout mechanism, a detection mechanism, a steering and transmission mechanism, a flexible film laying mechanism, a glass plate loading mechanism, and a flipping and unloading mechanism arranged sequentially along the material conveying direction;

[0007] The carrier feeding mechanism is used to provide a carrier with a back plate to the layout mechanism, and a battery cell feeding device is provided corresponding to the layout mechanism to provide multiple battery cells to be layoutd; the detection mechanism is used to detect the battery cells on the carrier and transfer the detected carrier to the steering and conveying mechanism; the flexible film laying mechanism and the glass plate loading mechanism are used for the sequential laying of the flexible film and the glass plate, respectively, and the flipping and unloading mechanism is used to flip and separate the material from the carrier after passing through the above mechanisms;

[0008] The photovoltaic module production line also includes an NG buffer mechanism for buffering carriers that fail the cell inspection; the steering and transfer mechanism is located between the NG buffer mechanism and the flexible film laying mechanism, and the steering and transfer mechanism can transfer carriers that pass the cell inspection to the flexible film laying mechanism or transfer carriers that fail the inspection to the NG buffer mechanism.

[0009] As a further improvement of this utility model, the steering transmission mechanism includes two spaced-apart first transmission units and second transmission units;

[0010] Both transmission units include orthogonally arranged horizontal and vertical transmission lines, and at least one transmission line in each transmission unit is connected to the lifting mechanism; the horizontal transmission line of the first transmission unit is connected to the transmission line of the detection mechanism, the vertical transmission line of the first transmission unit and the vertical transmission line of the second transmission unit are connected to each other, and one end of the horizontal transmission line of the second transmission unit is connected to the flexible film laying mechanism, and the other end is connected to the NG buffer mechanism.

[0011] As a further improvement of this utility model, the typesetting mechanism, the detection mechanism, and the first transmission unit are spaced apart in the first direction, and the first transmission unit and the second transmission unit are spaced apart along the second direction and their vertical transmission lines extend along the second direction to transport the carrier, the second direction being perpendicular to the first direction; the NG buffer mechanism, the second transmission unit, the flexible film laying mechanism, the glass plate loading mechanism, and the flipping unloading mechanism are arranged along a third direction, the third direction being parallel to the first direction; the horizontal transmission line transports the carrier along the first direction, and the vertical transmission line transports the carrier along the second direction.

[0012] As a further improvement of this utility model, an automatic patching mechanism is provided on one side of the NG buffer mechanism for patching the battery cells on the back plate of the carrier after rework; and a transition mechanism is provided on the conveying path between the layout mechanism and the detection mechanism, the transition mechanism being connected to the automatic patching mechanism, and the transition mechanism being used to transfer the patched carrier to the detection mechanism.

[0013] As a further improvement of this utility model, the automatic patching mechanism includes a battery cell handling module, a feeding conveyor line and an output conveyor line arranged in a cross configuration; the battery cell handling module is used for picking up and placing battery cells; at least one of the feeding conveyor line and the output conveyor line is connected to a lifting module; the feeding conveyor line is connected to the conveyor line of the NG buffer mechanism and is used to receive the carrier of the patched cells to be returned for repair; the output conveyor line is connected to the transition mechanism and is used to transport the patched carrier back to the detection mechanism.

[0014] The transition mechanism includes a first direction transmission line and a second direction transmission line orthogonally arranged, with at least one direction transmission line connected to the lifting module; and the first direction transmission line is connected to the layout mechanism and the detection mechanism respectively, and the second direction transmission line is connected to the discharge transmission line, so that the carrier after rework can be transported from the second direction transmission line to the first direction transmission line and then sent to the detection mechanism by the first direction transmission line.

[0015] As a further improvement of this utility model, a rotating module for rotating the carrier by a certain angle is provided on the conveying path between the typesetting mechanism and the detection mechanism.

[0016] As a further improvement of this utility model, a rework station is provided on one side of the NG buffer mechanism for reworking and retrieving defective battery cells on the carrier; the rework station is provided with a rework conveyor line that can transport in both directions, and the rework conveyor line is connected to the conveyor line of the NG buffer mechanism.

[0017] As a further improvement of this utility model, a rework return mechanism is provided between the rework station and the carrier feeding mechanism. The rework return mechanism is connected to both the rework station and the carrier feeding mechanism and is used to return the carrier after the battery cell rework is completed to the carrier feeding mechanism.

[0018] As a further improvement of this utility model, it also includes a carrier return mechanism, one end of which is connected to the carrier feeding mechanism and the other end of which is connected to the tilting unloading mechanism; the carrier return mechanism is used to cyclically transport the carrier output by the tilting unloading mechanism back to the carrier feeding mechanism.

[0019] As a further improvement of this utility model, the carrier return mechanism includes two carrier elevators respectively provided with the corresponding carrier feeding mechanism and the flipping unloading mechanism, and a carrier transmission belt provided between the two carrier elevators.

[0020] The vehicle lifting mechanism includes a lifting module and a conveyor belt connected to the lifting module; the vehicle conveyor belt is located above or below the tilting and unloading mechanism, and the two conveyor belts can be connected to the end of the vehicle conveyor belt after rising or falling to the correct position.

[0021] As a further improvement of this utility model, an OK buffer mechanism is provided on the conveying path between the steering and transmission mechanism and the flexible film laying mechanism, which is used to buffer the carriers that have passed the battery cell inspection and to sequentially transfer the buffered carriers to the flexible film laying mechanism.

[0022] As a further improvement of this utility model, the OK cache mechanism and the NG cache mechanism are lifting cache mechanisms, which include a cache conveyor line and cache units disposed on both sides of the cache conveyor line.

[0023] The two buffer units are respectively connected to the lifting unit and can reciprocate under the drive of the lifting unit. The inner side of the two buffer units is arranged with multiple buffer positions at intervals along the vertical direction. By using the lifting control of the two buffer units, the buffer position aligned with the buffer conveyor line can be switched. One buffer position is used to buffer one carrier.

[0024] As a further improvement of this utility model, the typesetting mechanism includes a carrier transmission line, a battery cell typesetting robot, and a heating module;

[0025] The carrier transmission line is used to receive and transmit the carrier; the battery cell layout robot is located between the battery cell feeding device and the carrier transmission line, and is used to arrange the battery cells on the battery cell feeding device into the back plate inside the carrier according to a preset pattern; the heating module is used to heat the battery cells after the battery cell feeding is completed.

[0026] As a further improvement of this utility model, the detection mechanism is a PL detection device, which includes a detection transmission line, a movable PL detector and a vision detection module.

[0027] The detection transmission line is connected to the typesetting mechanism. The vision inspection module is disposed above the detection transmission line. The movable PL inspection instrument includes a moving module and a PL inspection instrument connected to the moving module. The PL inspection instrument is disposed above the detection transmission line. The moving module is used to move the PL inspection instrument to complete defect detection. The vision inspection module is used to perform visual inspection on the material on the carrier to determine whether the material is qualified. As a further improvement of this utility model, the flexible film laying mechanism includes a film laying transmission line, a material pulling module, a cutting module, and a material feeding module.

[0028] The feeding module is located on one side of the film laying conveyor line and is used to feed the flexible film. The cutting module is located on the feeding path of the flexible film and is used to cut the flexible film after it is pulled into place. The pulling module is located above the film laying conveyor line and its pulling direction is perpendicular to the conveying direction of the film laying conveyor line. It is used to pull the flexible film above the film laying conveyor line and to load the cut flexible film onto the material in the carrier.

[0029] As a further improvement of this utility model, the glass plate feeding mechanism includes a vertically intersecting plate laying conveyor line and a glass conveyor line, a material picking component, a glass plate handling component, a glass buffer box, a paper buffer box, and a displacement component. The glass buffer box and the paper buffer box are arranged side by side on one side of the glass conveyor line, and the paper buffer box is located on the side of the glass buffer box away from the glass conveyor line.

[0030] The material picking component is positioned above the two buffer boxes and includes at least one suction cup unit. The glass plate handling component is positioned above the laying conveyor line and includes at least one suction cup unit. Both the material picking component and the glass plate handling component are connected to the displacement component. The displacement component is used to drive the material picking component to move back and forth between the glass buffer box, the paper buffer box, and the glass conveyor line, and also to drive the glass plate handling component to move back and forth between the laying conveyor line and the glass conveyor line.

[0031] As a further improvement of this utility model, the glass plate feeding mechanism also includes a glass alignment module. The end of the glass laying transmission line is the glass laying position. The glass alignment module is located between the glass transmission line and the glass laying position, and is located above the glass laying transmission line. The displacement component is also used to drive the glass plate handling component to move back and forth between the glass laying transmission line, the glass alignment module, and the glass transmission line.

[0032] As a further improvement of this utility model, the flipping feeding mechanism includes a flipping drive mechanism, a flipping frame connected to the flipping drive mechanism and capable of flipping around an axis, and four flipping production lines arranged sequentially from top to bottom, with the flipping production lines arranged on the flipping frame.

[0033] The transmission surfaces of the two flipping production lines located in the middle are set opposite to each other, and the two flipping production lines located in the middle are respectively set opposite to the transmission surfaces of the other two flipping production lines located on the upper and lower sides. The flipping drive mechanism drives the four flipping production lines to flip synchronously with the flipping frame.

[0034] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0035] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:

[0036] The photovoltaic module production line of this utility model includes a carrier feeding mechanism, a layout mechanism, an inspection mechanism, a turning and conveying mechanism, a flexible film laying mechanism, a glass plate loading mechanism, and a flipping and unloading mechanism arranged in sequence. By utilizing the corresponding setting of the NG buffer mechanism on one side of the turning and conveying mechanism, the carriers that fail to pass inspection can be accurately buffered, avoiding the impact of carriers that fail to pass inspection on the normal production process of photovoltaic modules, improving the production efficiency and quality of photovoltaic modules, and reducing the production cost of photovoltaic modules. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the photovoltaic module production line in an embodiment of this utility model;

[0039] Figure 2 This is a schematic diagram of the layout mechanism of the photovoltaic module production line in this embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the transition mechanism of the photovoltaic module production line in this embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram of the structure of the testing mechanism of the photovoltaic module production line in this embodiment of the present invention;

[0042] Figure 5 This is a schematic diagram of the steering and transmission mechanism of the photovoltaic module production line in this embodiment of the present invention;

[0043] Figure 6 This is a schematic diagram of the NG buffer mechanism of the photovoltaic module production line in this embodiment of the present invention;

[0044] Figure 7 This is a schematic diagram of the automatic patching mechanism of the photovoltaic module production line in this embodiment of the present invention;

[0045] Figure 8 This is a schematic diagram of a photovoltaic module production line equipped with an automatic patching mechanism in an embodiment of this utility model;

[0046] Figure 9 This is a schematic diagram of a photovoltaic module production line according to one embodiment of the present invention, which includes a rework station;

[0047] Figure 10This is a schematic diagram of a photovoltaic module production line under another embodiment of the present invention, which includes a rework station;

[0048] Figure 11 This is a schematic diagram of the flexible film laying mechanism of the photovoltaic module production line in this embodiment of the present invention;

[0049] Figure 12 This is a schematic diagram of the glass plate loading mechanism of the photovoltaic module production line in this embodiment of the present invention;

[0050] Figure 13 This is a schematic diagram of the structure of the flipping and unloading mechanism of the photovoltaic module production line in this embodiment of the present invention;

[0051] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0052] 1. Carrier feeding mechanism; 2. Backplate feeding mechanism; 3. Layout mechanism; 4. Cell feeding device; 5. Transition mechanism; 6. Inspection mechanism; 7. Directional transmission mechanism; 8. NG buffer mechanism; 9. Automatic cell replacement mechanism; 10. OK buffer mechanism; 11. Flexible film laying mechanism; 12. Glass plate feeding mechanism; 13. Flipping unloading mechanism; 14. Product unloading line; 15. Carrier return mechanism; 16. Rework station; 17. Rework return mechanism;

[0053] 301. Carrier feeding conveyor line; 302. Battery cell sorting robot; 303. Battery cell feeding conveyor line; 304. Carrier moving module; 305. Carrier unloading conveyor line; 306. Heating module; 501. First direction conveyor line; 502. Second direction conveyor line; 503. Rotation module; 601. Inspection conveyor line; 602. Movable PL inspector; 603. Vision inspection module; 701. First transmission unit; 702. Second transmission unit; 801. Buffer unit; 802. Lifting unit; 803. Buffer position; 804. Buffer conveyor line; 901. XY plane 902. Cell transfer module; 903. Feeding conveyor line; 904. Discharge conveyor line; 1101. Film laying conveyor line; 1102. Material pulling module; 1103. Cutting module; 1104. Material feeding module; 1201. Plate laying conveyor line; 1202. Glass conveyor line; 1203. Material picking assembly; 1204. Glass plate handling assembly; 1205. Glass buffer box; 1206. Paper buffer box; 1207. Glass alignment module; 1301. Flipping frame; 1302. Flipping production line; 1501. Carrier elevator; 1502. Carrier conveyor belt. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0055] In the description of this utility model, it should be understood that, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0058] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] It should be noted that the photovoltaic module production line in the preferred embodiment of this utility model is used to produce intermediate materials in the photovoltaic module production process, which includes a backsheet, solar cells, a flexible film, and a glass plate arranged sequentially in the thickness direction. The backsheet includes at least a conductive backsheet for conducting multiple solar cells interconnected on the conductive backsheet.

[0060] Regarding the manufacturing of the aforementioned photovoltaic modules, such as Figure 1 As shown, the photovoltaic module production line in the preferred embodiment of this utility model includes a carrier feeding mechanism 1, a layout mechanism 3, a detection mechanism 6, a steering and conveying mechanism 7, a flexible film laying mechanism 11, a glass plate loading mechanism 12, and a flipping and unloading mechanism 13 arranged sequentially along the material conveying direction. The carrier feeding mechanism 1 provides a carrier with a backsheet, i.e., a carrier already laid with a backsheet, which includes at least a conductive backsheet. The carrier feeding mechanism 1 can convey this carrier to the layout mechanism 3. The layout mechanism 3 is used to arrange the solar cells onto the backsheet on the carrier. The detection mechanism 6 is used to detect the solar cells on the carrier after the cell layout is completed. The flexible film laying mechanism 11 and the glass plate loading mechanism 12 are used for the sequential laying of the flexible film and the glass plate, respectively, and the flipping and unloading mechanism 13 is used to flip and separate the material from the carrier after passing through the above mechanisms.

[0061] The material conveying direction refers to the direction in which the carrier, carrying the backplate, conveys the battery cells in sequence, including cell arrangement, battery cell testing, flexible film laying, glass plate laying, and flipping. This conveying direction is not limited to a fixed direction and can branch, merge, or change direction as needed, as long as the positions of each mechanism are arranged according to the process sequence.

[0062] It should also be noted that the materials on the carrier change as the carrier passes through different workstations. For example, at the workstation where the testing mechanism 6 is located, the materials from bottom to top are the back sheet and the battery cell; at the workstation where the flexible film laying mechanism 11 is located, the materials from bottom to top are the back sheet, the battery cell and the flexible film; and at the workstation where the glass plate loading mechanism 12 is located, the top layer of materials also includes a glass plate.

[0063] Furthermore, the photovoltaic module production line also includes an NG buffer mechanism 8, which is used to buffer carriers that fail the cell inspection; the steering and transfer mechanism 7 is located between the NG buffer mechanism 8 and the flexible film laying mechanism 11. The steering and transfer mechanism 7 can alternately transfer the carriers to the two mechanisms, that is, transfer the carriers that pass the cell inspection to the flexible film laying mechanism 11 or transfer the carriers that fail the inspection to the NG buffer mechanism 8.

[0064] By utilizing the photovoltaic module production line setup, the following processes can be completed sequentially: cell arrangement on the backsheet, cell inspection after loading, buffering of defective cells on the carrier, flexible film laying on the cells, and glass plate laying on the flexible film. After completing these processes, the material follows the carrier to the flipping and unloading mechanism 13 for separation from the carrier, and the separated material is then transported and unloaded separately from the carrier. By setting up the NG buffer mechanism 8, materials requiring rework can be temporarily stored, and then reworked one by one when needed. This does not affect the cycle time of the preceding and following mechanisms, improving rework efficiency.

[0065] It is understood that in the actual setup of the aforementioned mechanisms, structures connecting the various mechanisms are provided, such as belt conveyors or other types of moving mechanisms. In the preferred embodiment, these structures are not specifically limited, as long as they can meet the transfer requirements of the carrier and its carried materials between different mechanisms.

[0066] Simultaneously, a cell feeding device 4 is provided corresponding to the layout mechanism 3. The layout mechanism 3 is used to arrange multiple cells onto the backplate. The layout pattern of the cells can be based on the layout pattern of the photovoltaic module. After the cells are arranged, the carrier with the cells is transferred from the layout mechanism 3 to the detection mechanism 6. The detection mechanism 6 detects the cells on the carrier and transfers the detected material to the deflection and transfer mechanism 7. Specifically, the cell feeding device 4 provided corresponding to the layout mechanism 3 refers to:

[0067] To facilitate the layout of solar cells by the layout mechanism 3, a solar cell feeding device 4 needs to be installed near the layout mechanism 3 to supply solar cells. More specifically, the solar cell feeding device 4 can be installed at the workstation where the layout mechanism 3 is located. Specifically, two solar cell feeding devices 4 can be installed on both sides of the conveyor mechanism (hereinafter referred to as the conveyor feeding line 301) to increase production capacity. The main structure of the solar cell feeding device 4 is a conveyor belt. Other necessary structures, such as a centering clamping mechanism and a vision imaging mechanism, can be installed along the path of the solar cells. The solar cell conveying line, the centering clamping mechanism, and the vision imaging mechanism together constitute the solar cell feeding device 4. It should also be noted that, although Figure 1The cell feeding device 4 is located on the side of the layout mechanism 3. This is only for illustration. The position of the cell conveyor line in the cell feeding device 4 relative to the layout mechanism 3 can be seen by referring to... Figure 2 The location of the cell feeding conveyor line 303 is shown in the diagram.

[0068] Furthermore, the steering and transmission mechanism 7 is used to receive carriers from the testing mechanism 6 and steering and conveying carriers that have completed cell testing to the flexible membrane laying mechanism 11, and to steering and conveying carriers that have failed testing to the NG buffer mechanism 8 for buffering. As a further refinement of the above technical solution, the steering and transmission mechanism 7 in the preferred embodiment includes two spaced-apart first transmission units 701 and second transmission units 702, such as... Figure 5 As shown in the image.

[0069] In detail, both transmission units include orthogonally arranged horizontal transmission lines (horizontal direction in the figure) and vertical transmission lines (vertical direction in the figure), and at least one transmission line in each transmission unit is connected to the lifting mechanism. Simultaneously, the horizontal transmission line of the first transmission unit 701 is connected to the transmission line of the detection mechanism 6, and the vertical transmission lines of the first and second transmission units are connected to each other. One end of the horizontal transmission line of the second transmission unit 702 is connected to the flexible membrane laying mechanism 11, and the other end is connected to the NG buffer mechanism 8. That is, the NG buffer mechanism 8 and the flexible membrane laying mechanism 11 are located on opposite sides of the steering transmission mechanism 7. Thus, through this steering transmission mechanism 7, the vehicle can be transmitted towards either the NG buffer mechanism 8 or the flexible membrane laying mechanism 11 after being detected by the detection mechanism 6. At this time, the horizontal transmission line of the second transmission unit 702 can transport the vehicle in both directions.

[0070] Furthermore, the typesetting mechanism 3, the inspection mechanism 6, and the first transmission unit 701 are spaced apart in the first direction, and the first transmission unit 701 and the second transmission unit 702 are spaced apart along the second direction, with their vertical transmission lines extending along the second direction to transport the carrier. The second direction is perpendicular to the first direction. The NG buffer mechanism 8, the second transmission unit 702, the flexible film laying mechanism 11, the glass plate loading mechanism 12, and the flipping unloading mechanism 13 are arranged along a third direction, which is parallel to the first direction. The horizontal transmission line transports the carrier along the first direction, and the vertical transmission line transports the carrier along the second direction. This layout saves space in the production line and facilitates material transport and operation.

[0071] Furthermore, a rework station 16 is also provided for the NG buffer mechanism 8, which is used to rework and retrieve defective battery cells from the carriers transported from the NG buffer mechanism 8.

[0072] It is understandable that in actual setup, the removal of substandard battery cells can be done manually or by equipment (such as a robotic arm), which will not be elaborated here.

[0073] To ensure the continuity and stability of photovoltaic module production, in the preferred embodiment, after the rework and material retrieval of the solar cells is completed, the corresponding carriers can be transported and buffered at the NG buffer mechanism 8. After the normal production process is completed, the downstream mechanisms of the turning and conveying mechanism 7 are used to transport the reworked solar cells back to the carriers for replacement. Of course, for the carriers that have been reworked at the rework station 16, the solar cells on the carriers can also be replenished before being transported back to the photovoltaic module production line.

[0074] More specifically, regarding the process after replenishing the battery cells in the preferred embodiment, there are two methods: one is to additionally set up an automatic replenishment mechanism 9 to replenish the cells; the other is to transfer the cells back to the carrier feeding mechanism 1, and then have the layout mechanism 3 replenish the cells at the positions after they have been picked up. After the cells are replenished, the carrier is then inspected by the detection mechanism 6 and fed to the steering and transmission mechanism 7 and the downstream mechanism.

[0075] For the first type of patching method, the specific method is as follows: an automatic patching mechanism 9 is set on one side of the rework station 16 to patch the battery cells on the backsheet of the carrier after rework. A transition mechanism 5 is set on the conveying path between the layout mechanism 3 and the detection mechanism 6. The transition mechanism 5 is used to transfer the patched carrier to the detection mechanism 6.

[0076] In detail, the rework station 16 is equipped with a rework conveyor line, which is connected to the conveyor line of the NG buffer mechanism 8. In the preferred embodiment, the automatic patching mechanism 9 includes a cell handling module, a cross-arranged infeed conveyor line 903, and an outfeed conveyor line 904. The infeed conveyor line 903 is connected to the rework conveyor line and is used to receive the carrier after rework from the rework station 16. The outfeed conveyor line 904 is connected to the transition mechanism 5 and is used to transport the patched carrier back to the detection mechanism 6 via the transition mechanism 5. The cell handling module is used to acquire cells and place them on the backplate at the patching position. At least one of the infeed conveyor line 903 and the outfeed conveyor line 904 is connected to a lifting module, and the switching of the two conveyor lines' operating modes is completed through the lifting control of the conveyor lines.

[0077] It is understandable that, in actual setup, the battery cell handling module can be a suction cup mechanism mounted on various displacement modules, such as a suction cup mechanism mounted on a linear displacement module or a suction cup mechanism mounted on a multi-axis robotic arm.

[0078] For example, in such Figure 7In the preferred embodiment shown, the battery cell handling module includes an XY translation module 901 and a battery cell picking module 902. The XY translation module 901 is positioned above the feeding conveyor line 903, and picks up the battery cells to replace missing parts. Of course, the replacement handling mechanism can also be other handling structures, such as a robotic arm. For example, a battery cell cassette can be placed at this station. The battery cell picking module 902 picks up the battery cells from the cassette and places them at the missing parts. In other words, the movement trajectory of the battery cell picking module 902 covers the location of the battery cell cassette (or provides the battery cells).

[0079] Meanwhile, in the preferred embodiment, the transition mechanism 5 includes a first-direction transmission line 501 and a second-direction transmission line 502 arranged orthogonally. At least one of the two transmission lines is connected to the lifting module, and the switching between the two transmission lines can be achieved by controlling the lifting module. The first-direction transmission line 501 and the second-direction transmission line 502 are, for example, conveyor belts.

[0080] Specifically, the two ends of the first direction transmission line 501 are connected to the layout mechanism 3 and the detection mechanism 6, respectively, and the second direction transmission line 502 is connected to the automatic patching mechanism 9 (discharge transmission line 904), so that the carrier after the repair is completed can be transported from the second direction transmission line 502 to the first direction transmission line 501 and then sent to the detection mechanism 6 by the first direction transmission line 501.

[0081] More preferably, a rotating module 503 is provided on the conveying path between the typesetting mechanism 3 and the inspection mechanism 6 to rotate the carrier by a certain angle. By using the rotating module 503, the direction of the long side of the carrier relative to the conveyor line can be changed during transport, thereby adjusting the arrangement length of the photovoltaic module manufacturing device in the first and second directions to meet the setup requirements under different factory conditions. For example, rotating the carrier by 90° using the rotating module 503 can reduce the space occupied in the first direction.

[0082] Furthermore, when the photovoltaic module production line includes an automatic wafer replacement mechanism 9 and a transition mechanism 5 located between the layout mechanism 3 and the inspection mechanism 6, a rotating module 503 can be installed at the location of the transition mechanism 5. In this case, the rotating module 503 can be connected to a lifting module to support the carrier on the conveying path through lifting, and to complete the rotation and reversal of the carrier after supporting it. More preferably, the rotating module 503 is integrated at the intersection of the two-way transmission lines in the transition mechanism 5.

[0083] More specifically, based on the configuration of the automatic cell repair mechanism 9, the cell repair process on the carrier can be further optimized to be completed at the automatic cell repair mechanism 9. In this case, there is no need to set up a repair station 16 on the side of the NG buffer mechanism 8, and Figure 1The photovoltaic module production line in China can be further improved to, for example... Figure 8 The form shown. For the production line at this time, the feed conveyor line 903 of the automatic patching mechanism 9 and the conveyor line of the NG buffer mechanism 8 (i.e., Figure 6 The buffer conveyor line 804 is connected to the automatic cell replacement mechanism 9. Cells that fail inspection are transported to the automatic cell replacement mechanism 9 via the conveyor line. At the automatic cell replacement mechanism 9, the cells to be repaired are removed and replenished. Then, the replaced cells are transported back to the inspection mechanism 6 via the transition mechanism 5, and further transported to the turning conveyor mechanism 7. Finally, the cells are transported towards the flexible film laying mechanism 11, thus completing the repair work, namely flexible film laying, glass plate laying, and material flipping. This part is the same as the work for materials that pass inspection. Of course, if needed, a repair station 16 can be set between the automatic cell replacement mechanism 9 and the NG buffer mechanism 8, depending on the actual situation.

[0084] The second patching method involves the following steps: after the battery cells are retrieved from rework station 16, the carrier transports them back to the layout mechanism 3 for patching. Regarding the return transport of the carrier from rework station 16, there are two processing modes in actual operation.

[0085] In a preferred embodiment, the photovoltaic module production line preferably further includes a carrier return mechanism 15. One end of the carrier return mechanism 15 is connected to the carrier feeding mechanism 1, and the other end is connected to the flipping unloading mechanism 13. The carrier return mechanism 15 is used to cyclically transport the empty carriers output by the flipping unloading mechanism 13 back to the carrier feeding mechanism 1, thereby realizing the recycling of the carriers. It should be noted that when the production line does not require rework, this carrier return mechanism 15 is only used to return empty carriers that do not carry backsheets and materials. However, when used as a return mode for rework, the objects returned include both the carrier and the materials to be repaired.

[0086] As a return mode for the reworked carrier, the carrier can be returned to the carrier feeding mechanism 1 via the aforementioned carrier return mechanism 15. That is, the carrier carrying the reworked material is sequentially transported from the buffer conveyor line of the NG buffer mechanism 8 through the turning and conveying mechanism 7, the flexible film laying mechanism 11, the glass plate loading mechanism 12, the flipping and unloading mechanism 13, and the carrier return mechanism 15 to the carrier feeding mechanism 1, where the rework operation is then completed by the layout mechanism 3. At this time, Figure 1 The photovoltaic module production line in China can be further improved to, for example... Figure 9 The form shown.

[0087] It is understandable that during the return process of the carrier after repair, the flexible film laying mechanism 11, the glass plate loading mechanism 12, and the flipping unloading mechanism 13 only provide the carrier transmission function and do not perform the corresponding material loading and unloading process. For example, the flexible film is not laid when passing through the flexible film laying mechanism 11, the glass plate is not laid when passing through the glass plate loading mechanism 12, and the flipping unloading mechanism 13 is not flipped. This setting not only reduces the introduction of additional equipment, but also allows the return of the empty carrier after material separation to be completed using the carrier return mechanism 15, thus fully improving the functionality of the carrier return mechanism 15.

[0088] More preferably, the aforementioned carrier return mechanism 15 preferably includes two carrier lifts 1501 respectively provided for the carrier feeding mechanism 1 and the tilting unloading mechanism 13, and a carrier transmission belt 1502 disposed between the two carrier lifts 1501. Each carrier lift 1501 includes a lifting module and a transmission belt connected to the lifting module, namely a first transmission belt located on one side of the tilting unloading mechanism 13 and a second transmission belt located on one side of the carrier feeding mechanism 1. The carrier transmission belt 1502 is disposed above or below the tilting unloading mechanism 13, and the two transmission belts can connect and engage with the ends of the carrier transmission belt 1502 after the belts have risen or fallen to their designated positions. When the carrier conveyor belt 1502 is positioned above the tilting and unloading mechanism 13, the carrier from the tilting and unloading mechanism 13 is transferred to the first conveyor belt. Driven by the lifting module, the first conveyor belt rises and connects with the carrier conveyor belt 1502. The carrier is then transferred from the first conveyor belt to the carrier conveyor belt 1502 and then to the second conveyor belt. The second conveyor belt then descends under the drive of the lifting module and connects with the carrier feeding mechanism 1. When the carrier conveyor belt 1502 is positioned below the tilting and unloading mechanism 13, the carrier from the tilting and unloading mechanism 13 is transferred to the first conveyor belt. Driven by the lifting module, the first conveyor belt descends and connects with the carrier conveyor belt 1502. The carrier is then transferred from the first conveyor belt to the carrier conveyor belt 1502 and then to the second conveyor belt. The second conveyor belt then rises under the drive of the lifting module and connects with the carrier feeding mechanism 1.

[0089] The reason for placing the carrier transmission belt 1502 of the carrier return mechanism 15 above each mechanism on the production line is to avoid interference with the setup of each mechanism, shorten the length of the transmission line, save factory floor space, and reduce the production cost of photovoltaic modules. Of course, it can also be placed in the lower space instead of the upper space, depending on the specific requirements.

[0090] As another return mode for the reworked carrier, it does not share the aforementioned carrier return mechanism 15 with the "empty carrier" after flipping and unloading. In this case, a rework return mechanism 17 is provided between the rework station 16 and the carrier feeding mechanism 1. The rework return mechanism 17 is connected to both the rework station 16 and the carrier feeding mechanism 1, and uses the rework return mechanism 17 to return the reworked carrier to the carrier feeding mechanism 1. In this embodiment, Figure 1 The photovoltaic module production line in China can be further improved to, for example... Figure 10 The form shown.

[0091] In actual setup, the aforementioned rework return mechanism 17 is preferably a belt conveyor line located between the rework conveyor line and the carrier feeding mechanism 1, and the return of the carrier is completed through the transmission of the belt conveyor line.

[0092] In addition, for this embodiment of reverse transmission of the patch by the carrier, in order to ensure the continuity and stability of photovoltaic module manufacturing, in the preferred embodiment, after the repair of the cell is completed, the corresponding carrier can be cached at the NG cache mechanism 8. After the normal production process is completed, the patch is transmitted back to each carrier after repair by using the transmission function of each downstream mechanism of the turning transmission mechanism 7 during the interval time.

[0093] Furthermore, it is preferable to provide an OK buffer mechanism 10 between the steering and transmission mechanism 7 and the flexible film laying mechanism 11. This mechanism buffers the material carriers that have passed the battery cell inspection and can sequentially transfer the buffered material carriers to the flexible film laying mechanism 11. In this case, the OK buffer mechanism 10 and the NG buffer mechanism 8 are located on opposite sides of the steering and transmission mechanism 7 (specifically, the second transmission unit 702). By providing the OK buffer mechanism 10, the problem of mismatched cycle times between the mechanisms before and after the OK buffer mechanism 10 can be solved. During operation, the OK buffer mechanism 10 can perform buffering when needed, and release the buffered, inspected products when the flexible film and glass plate can be laid.

[0094] By setting up two buffer mechanisms, it is possible to separately buffer the qualified and unqualified battery cell inspection carriers, ensuring the accuracy and reliability of the production line operation.

[0095] More specifically, for the OK buffer mechanism 10 and NG buffer mechanism 8 in the preferred embodiment, they are preferably lifting buffer mechanisms, including a buffer conveyor line 804 and buffer units 801 disposed on both sides of the buffer conveyor line 804.

[0096] For example Figure 6Taking the NG buffer mechanism 8 shown as an example, at this time, the two buffer units 801 are respectively connected to the lifting unit 802, and can reciprocate under the drive of the lifting unit 802. The inner side of the two buffer units 801 is arranged with multiple buffer positions 803 in a vertical sequence. Each buffer position is used to buffer one carrier. By using the lifting control of the two buffer units 801, the buffer position 803 aligned with the buffer conveyor line 804 can be switched, thereby realizing the unloading of the buffer carrier on the buffer conveyor line 804 or the buffer loading of the carrier on the buffer conveyor line 804 onto the buffer unit 801.

[0097] It is understandable that the configuration of OK cache mechanism 10 can be set by referring to the configuration of NG cache mechanism 8 mentioned above, and will not be elaborated here.

[0098] As a further improvement to the technical solution of this utility model, the typesetting mechanism 3 in the preferred embodiment is as follows: Figure 2 As shown, it preferably includes a carrier feeding conveyor line 301, a battery cell layout robot 302, a battery cell feeding conveyor line 303, a carrier moving module 304, a carrier discharging conveyor line 305, and a heating module 306.

[0099] The carrier feeding conveyor line 301 is used to transport the carrier to the interior of the layout mechanism 3. The carrier moving module 304 is used to move the carrier along a first direction inside the layout mechanism 3 to facilitate the placement of the battery cell layout robot 302. In actual installation, the carrier moving module 304 is preferably a movable carrier plate with high displacement control accuracy. Meanwhile, the heating module 306 is used to heat the battery cells laid out on the back plate, and the carrier unloading conveyor line 305 is used to transport the carrier, after the battery cells have been laid out on the back plate and heated, out of the layout mechanism 3. The battery cell feeding conveyor line 303 is part of the battery cell feeding device 4, used to transport the battery cells to the interior of the layout mechanism 3, i.e., to provide the layout mechanism 3 with battery cells to be laid out.

[0100] In addition, the battery cell layout robot 302 is preferably located between the battery cell feeding device 4 and the carrier feeding transmission line 301, and is used to arrange the battery cells on the battery cell feeding device 4 into the back plate inside the carrier according to a preset pattern.

[0101] Furthermore, in actual setup, it is preferable to provide a backboard feeding mechanism 2 corresponding to the carrier feeding mechanism 1 or the carrier return mechanism 15, for feeding the backboard in the empty carrier, so as to ensure that the carrier feeding mechanism 1 can continuously supply the carrier after feeding the backboard to the layout mechanism 3.

[0102] More specifically, the detection mechanism 6 in the preferred embodiment is as follows: Figure 4As shown, it includes a detection transmission line 601 for carrier transport, a movable PL (Plastic Processing) inspector 602, and a vision inspection module 603. The movable PL inspector 602 includes a PL inspection instrument and a movable module positioned above the detection transmission line 601. The PL inspection instrument is mounted on the movable module and can move back and forth under the movement of the movable module to perform defect detection on different parts of the battery cells. Simultaneously, in the preferred embodiment, the vision inspection module 603 is used to perform visual inspection on the backsheet and battery cells. Combined with the detection results of the movable PL inspector 602, it determines whether the materials on the carrier are qualified.

[0103] After the inspection is completed, the carrier and the materials it carries are transferred to the downstream equipment via the inspection transmission line 601.

[0104] For example, in this embodiment, the detection mechanism 6 is a PL detection device, and the moving module is a linear motion module.

[0105] Furthermore, in the preferred embodiment, the flexible film laying mechanism 11 is used to lay the flexible film on the arranged battery cells, and preferably includes a film laying conveyor line 1101, a material pulling module 1102, a cutting module 1103, and a material feeding module 1104, such as... Figure 11 As shown in the image.

[0106] The feeding module 1104 is located on one side of the film-laying conveyor line 1101 and is used to feed the flexible film. The cutting module 1103 is located on the feeding path of the flexible film and is used to cut the flexible film after it is pulled into place. Simultaneously, the pulling module 1102 is located above the film-laying conveyor line 1101, with its pulling direction perpendicular to the conveying direction of the film-laying conveyor line 1101. It is used to pull the flexible film above the material carried on the film-laying conveyor line 1101 and to load the cut flexible film above the material in the carrier. The film-laying conveyor line 1101 is, for example, a conveyor belt. The pulling module 1102 is a conventional structure in the prior art, for example, using grippers to pull the flexible film. The cutting module 1103 is also a conventional structure in the prior art, at least including a cutter. The feeding module 1104 is also a conventional structure in the prior art, for example, including a feeding roll and a feeding motor, with the flexible film wound around the feeding roll and rotated for feeding.

[0107] In a preferred embodiment, the flexible film fed by the flexible film laying mechanism 11 is preferably an EVA film or an EPE film, which can be selected according to actual production needs, and will not be elaborated here.

[0108] Furthermore, after the flexible film is loaded, the carrier is sent to the glass plate loading mechanism 12 via a conveyor line, and the glass plate loading mechanism 12 completes the loading of the glass plate.

[0109] The glass plate feeding mechanism 12 in the preferred embodiment is as follows: Figure 12 As shown, it includes a vertically intersecting glass conveyor line 1201, a glass conveyor line 1202, a material handling assembly 1203, a glass plate handling assembly 1204, a glass buffer box 1205, a paper-separating buffer box 1206, and a glass alignment module 1207. The glass buffer box 1205 is used to stack glass plates. To prevent damage to the glass plates, paper is placed between adjacent glass plates within the glass buffer box 1205. The paper-separating buffer box 1206 is used to stack paper removed from the glass buffer box 1205.

[0110] The glass buffer box 1205 and the paper buffer box 1206 are arranged side by side on one side of the glass conveyor line 1202, with the paper buffer box 1206 positioned on the side of the glass buffer box 1205 facing away from the glass conveyor line 1202. The end of the board laying conveyor line 1201 is the glass laying position, where the glass board is laid on the carrier. Meanwhile, the material picking component 1203 is positioned above the two buffer boxes and includes two spaced-apart suction cup units. The distance between the glass buffer box 1205 and the glass conveyor line 1202, the distance between the two suction cup units, and the distance between the two buffer positions are all equal. The material picking component 1203 is connected to a displacement module, which can drive the material picking component 1203 to move back and forth, sequentially picking up the glass boards from the glass buffer box 1205 and transferring them onto the glass conveyor line 1202.

[0111] More specifically, the glass conveyor line 1202 is orthogonally arranged to the layup conveyor line 1201, with one end extending further above the layup conveyor line 1201 for conveying the glass sheet to the carrier after material handling. Correspondingly, the glass alignment module 1207 is located between the glass conveyor line 1202 and the glass laying position, and above the layup conveyor line 1201, for adjusting the alignment of the glass sheet. The glass plate handling assembly 1204 preferably includes a suction cup unit, which is also connected to the displacement module. It can move back and forth above the glass alignment module 1207 and the layup transmission line 1201 to pick up the glass plate from the glass transmission line 1202 and place it onto the glass alignment module 1207 for alignment correction. The aligned glass plate can then be moved via the glass plate handling assembly 1204 onto the layup transmission line 1201 to a carrier at the glass laying position. On the carrier, a glass plate, flexible film, solar cell, and backsheet are sequentially arranged from top to bottom, completing the production of intermediate materials in the photovoltaic module manufacturing process. The glass alignment module 1207 can be a conventional structure from the prior art, such as an XYθ alignment platform that can adjust the horizontal position of the glass plate.

[0112] In actual setup, it is preferable to simultaneously set a set of glass buffer boxes 1205 and a paper buffer box 1206 on both sides of the glass conveyor line 1202, so that when one set is in use, the other set is fed or other operations are performed. The two sets of buffer positions are mirrored relative to the glass conveyor line 1202.

[0113] After the glass plate is loaded onto the carrier, it is further transferred to the flipping and unloading mechanism 13 for flipping and unloading of the material, thereby achieving the separation of the material from the carrier.

[0114] In a preferred embodiment, the structure of the flipping and feeding mechanism 13 is as follows: Figure 13 As shown, it includes a flipping drive mechanism, a flipping frame 1301 connected to the flipping drive mechanism and capable of flipping around an axis, and four flipping conveyor lines 1302 arranged sequentially from top to bottom. The flipping conveyor lines 1302 are arranged on the flipping frame 1301, and the flipping drive mechanism drives the four flipping conveyor lines to flip synchronously with the flipping frame 1301. The flipping drive mechanism is, for example, a motor; the flipping conveyor lines 1302 are conveyor belts.

[0115] The two central flipping conveyor lines 1302 have their transport surfaces facing away from each other, and their transport surfaces are respectively opposite to the transport surfaces of the other two flipping conveyor lines 1302 located on the upper and lower sides. By controlling the flipping frame 1301, the finished material can be separated from the carrier and flipped for unloading. Furthermore, since the flipping unloading mechanism 13 includes four conveyor lines, it can simultaneously separate the material from the carrier and correct the empty carrier after separation. Specifically, for example, the second-layer flipping conveyor flips the material carrier to the third layer for material and carrier separation, with the material falling to the fourth layer. Meanwhile, the carrier flipped over from the third layer can simultaneously be flipped back to the second layer by the flipping frame 1301, thus correcting the empty carrier and simultaneously flipping the carrier awaiting unloading.

[0116] Meanwhile, the corresponding flipping and unloading mechanism 13 is also equipped with a product unloading line 14 and the aforementioned carrier return mechanism 15. The input end of the product unloading line 14 is connected to the output end of the flipping line that receives the material after the flipping and unloading mechanism 13 has completed the material flipping, and is used to output the flipped material (from top to bottom: backplate, battery cell, flexible film and glass plate).

[0117] It should be noted that the detection conveyor line, film laying conveyor line, plate laying conveyor line, rework conveyor line, buffer conveyor line, etc. in this utility model are all carriers with back plates. In the foregoing description, these conveyor lines are named according to the functions these mechanisms perform on materials for easy differentiation. Preferably, these conveyor lines are all conveyor belts. The materials on the back plates may also be different when passing through these mechanisms.

[0118] It should also be noted that in this application, one of the two orthogonally or perpendicularly arranged conveyor lines is connected to a drive actuator (such as a lifting module, lifting assembly, lifting mechanism, or lifting unit) that can drive its lifting and lowering, in order to facilitate the transfer of materials from one conveyor line to the other after lifting and lowering. Furthermore, it should be noted that, to facilitate material transfer, the conveyor lines also include clearance spaces to prevent the two conveyor lines from interfering with each other's material transport.

[0119] By utilizing the corresponding settings of the aforementioned photovoltaic module production line, the layering of each material in the carrier during the photovoltaic module manufacturing process can be accurately completed, ensuring the accuracy of the layering and improving the precision of photovoltaic module manufacturing. Furthermore, by utilizing the corresponding settings of the NG buffer mechanism 8, the carrier that fails the cell inspection can be buffered, ensuring that the normal operation of the photovoltaic module production line is not affected by the carrier that failed inspection, thus guaranteeing the accuracy and reliability of the photovoltaic module production process.

[0120] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A photovoltaic module production line, characterized in that, It includes a carrier feeding mechanism, a layout mechanism, a detection mechanism, a steering and transmission mechanism, a flexible film laying mechanism, a glass plate loading mechanism, and a flipping and unloading mechanism arranged sequentially along the material conveying direction; The carrier feeding mechanism is used to provide a carrier with a back plate to the layout mechanism, and a battery cell feeding device is provided corresponding to the layout mechanism to provide multiple battery cells to be layoutd; the detection mechanism is used to detect the battery cells on the carrier and transfer the detected carrier to the steering and conveying mechanism; the flexible film laying mechanism and the glass plate loading mechanism are used for the sequential laying of the flexible film and the glass plate, respectively, and the flipping and unloading mechanism is used to flip and separate the material from the carrier after passing through the above mechanisms; The photovoltaic module production line also includes an NG buffer mechanism for buffering carriers that fail the cell inspection; the steering and transfer mechanism is located between the NG buffer mechanism and the flexible film laying mechanism, and the steering and transfer mechanism can transfer carriers that pass the cell inspection to the flexible film laying mechanism or transfer carriers that fail the inspection to the NG buffer mechanism.

2. The photovoltaic module production line according to claim 1, characterized in that, The steering transmission mechanism includes two spaced-apart first transmission units and second transmission units. Both transmission units include orthogonally arranged horizontal and vertical transmission lines, and at least one transmission line in each transmission unit is connected to the lifting mechanism; the horizontal transmission line of the first transmission unit is connected to the transmission line of the detection mechanism, the vertical transmission line of the first transmission unit and the vertical transmission line of the second transmission unit are connected to each other, and one end of the horizontal transmission line of the second transmission unit is connected to the flexible film laying mechanism, and the other end is connected to the NG buffer mechanism.

3. The photovoltaic module production line according to claim 2, characterized in that, The typesetting mechanism, the detection mechanism, and the first transmission unit are spaced apart in the first direction. The first transmission unit and the second transmission unit are spaced apart along the second direction, and their vertical transmission lines extend along the second direction to transport the carrier. The second direction is perpendicular to the first direction. The NG buffer mechanism, the second transmission unit, the flexible film laying mechanism, the glass plate loading mechanism, and the flipping unloading mechanism are arranged along a third direction, which is parallel to the first direction. The horizontal transmission line transports the carrier along the first direction, and the vertical transmission line transports the carrier along the second direction.

4. The photovoltaic module production line according to any one of claims 1 to 3, characterized in that, An automatic patching mechanism is provided on one side of the NG buffer mechanism for patching the battery cells on the backplate of the carrier after rework; and a transition mechanism is provided on the conveying path between the layout mechanism and the detection mechanism. The transition mechanism is connected to the automatic patching mechanism and is used to transfer the patched carrier to the detection mechanism.

5. The photovoltaic module production line according to claim 4, characterized in that, The automatic patching mechanism includes a cell handling module, a cross-arranged infeed conveyor line and an outfeed conveyor line; the cell handling module is used for picking up and placing cells; at least one of the infeed and outfeed conveyor lines is connected to a lifting module; the infeed conveyor line is connected to the conveyor line of the NG buffer mechanism and is used to receive the carrier of the patched cells; the outfeed conveyor line is connected to the transition mechanism and is used to transport the patched carrier back to the detection mechanism. The transition mechanism includes a first direction transmission line and a second direction transmission line orthogonally arranged, with at least one direction transmission line connected to the lifting module; and the first direction transmission line is connected to the layout mechanism and the detection mechanism respectively, and the second direction transmission line is connected to the discharge transmission line, so that the carrier after rework can be transported from the second direction transmission line to the first direction transmission line and then sent to the detection mechanism by the first direction transmission line.

6. The photovoltaic module production line according to claim 1 or 5, characterized in that, A rotating module for rotating the carrier by a certain angle is provided on the conveying path between the typesetting mechanism and the detection mechanism.

7. The photovoltaic module production line according to claim 1, characterized in that, A rework station is provided on one side of the NG buffer mechanism for reworking and retrieving defective battery cells from the carrier; the rework station is equipped with a rework conveyor line that can transport in both directions, and the rework conveyor line is connected to the conveyor line of the NG buffer mechanism.

8. The photovoltaic module production line according to claim 7, characterized in that, A rework return mechanism is provided between the rework station and the carrier feeding mechanism. The rework return mechanism is connected to both the rework station and the carrier feeding mechanism and is used to return the carrier after the battery cell rework is completed to the carrier feeding mechanism.

9. The photovoltaic module production line according to claim 1, 2, 3, 7, or 8, characterized in that, It also includes a carrier return mechanism, one end of which is connected to the carrier feeding mechanism and the other end of which is connected to the tilting and unloading mechanism; the carrier return mechanism is used to cyclically transport the carrier output by the tilting and unloading mechanism back to the carrier feeding mechanism.

10. The photovoltaic module production line according to claim 9, characterized in that, The vehicle return mechanism includes two vehicle elevators respectively set for the corresponding vehicle feeding mechanism and the tilting unloading mechanism, and a vehicle transmission belt set between the two vehicle elevators; The vehicle lifting mechanism includes a lifting module and a conveyor belt connected to the lifting module; the vehicle conveyor belt is located above or below the tilting and unloading mechanism, and the two conveyor belts can be connected to the end of the vehicle conveyor belt after rising or falling to the correct position.

11. The photovoltaic module production line according to claim 1, characterized in that, An OK buffer mechanism is provided on the conveying path between the steering and transmission mechanism and the flexible membrane laying mechanism. This mechanism is used to buffer the carriers that have passed the battery cell inspection and to sequentially transfer the buffered carriers to the flexible membrane laying mechanism.

12. The photovoltaic module production line according to claim 11, characterized in that, The OK cache mechanism and the NG cache mechanism are lifting cache mechanisms, which include a cache conveyor line and cache units located on both sides of the cache conveyor line. The two buffer units are respectively connected to the lifting unit and can reciprocate under the drive of the lifting unit. The inner side of the two buffer units is arranged with multiple buffer positions at intervals along the vertical direction. By using the lifting control of the two buffer units, the buffer position aligned with the buffer conveyor line can be switched. One buffer position is used to buffer one carrier.

13. The photovoltaic module production line according to claim 1, characterized in that, The typesetting mechanism includes a carrier transmission line, a battery cell typesetting robot, and a heating module; The carrier transmission line is used to receive and transmit the carrier; the battery cell layout robot is located between the battery cell feeding device and the carrier transmission line, and is used to arrange the battery cells on the battery cell feeding device into the back plate inside the carrier according to a preset pattern; the heating module is used to heat the battery cells after the battery cell feeding is completed.

14. The photovoltaic module production line according to claim 1, characterized in that, The testing mechanism is a PL testing device, which includes a testing transmission line, a movable PL testing instrument, and a vision testing module; The detection transmission line is connected to the typesetting mechanism. The vision inspection module is located above the detection transmission line. The movable PL inspection instrument includes a movable module and a PL inspection instrument connected to the movable module. The PL inspection instrument is located above the detection transmission line. The movable module is used to move the PL inspection instrument to complete defect detection. The vision inspection module is used to perform visual inspection on the material on the carrier to determine whether the material is qualified.

15. The photovoltaic module production line according to claim 1, characterized in that, The flexible membrane laying mechanism includes a membrane laying conveyor line, a material pulling module, a cutting module, and a material feeding module; The feeding module is located on one side of the film laying conveyor line and is used to feed the flexible film. The cutting module is located on the feeding path of the flexible film and is used to cut the flexible film after it is pulled into place. The pulling module is located above the film laying conveyor line and its pulling direction is perpendicular to the conveying direction of the film laying conveyor line. It is used to pull the flexible film above the film laying conveyor line and to load the cut flexible film onto the material in the carrier.

16. The photovoltaic module production line according to claim 1, characterized in that, The glass plate feeding mechanism includes a vertically intersecting plate laying conveyor line and glass conveyor line, a material picking component, a glass plate handling component, a glass buffer box, a paper buffer box, and a displacement component. The glass buffer box and the paper buffer box are arranged side by side on one side of the glass conveyor line, and the paper buffer box is located on the side of the glass buffer box away from the glass conveyor line. The material picking component is positioned above the two buffer boxes and includes at least one suction cup unit. The glass plate handling component is positioned above the laying conveyor line and includes at least one suction cup unit. Both the material picking component and the glass plate handling component are connected to the displacement component. The displacement component is used to drive the material picking component to move back and forth between the glass buffer box, the paper buffer box, and the glass conveyor line, and also to drive the glass plate handling component to move back and forth between the laying conveyor line and the glass conveyor line.

17. The photovoltaic module production line according to claim 16, characterized in that, The glass plate loading mechanism also includes a glass alignment module. The end of the plate laying conveyor line is the glass laying position. The glass alignment module is located between the glass conveyor line and the glass laying position, and is located above the plate laying conveyor line. The displacement component is also used to drive the glass plate handling component to move back and forth between the plate laying conveyor line, the glass alignment module, and the glass conveyor line.

18. The photovoltaic module production line according to claim 1, characterized in that, The flipping and unloading mechanism includes a flipping drive mechanism, a flipping frame connected to the flipping drive mechanism and capable of flipping around an axis, and four flipping production lines arranged sequentially from top to bottom, with the flipping production lines arranged on the flipping frame. The transmission surfaces of the two flipping production lines located in the middle are set opposite to each other, and the two flipping production lines located in the middle are respectively set opposite to the transmission surfaces of the other two flipping production lines located on the upper and lower sides. The flipping drive mechanism drives the four flipping production lines to flip synchronously with the flipping frame.

Images