Photovoltaic cell string welding layout device and string welding method thereof

Abstract

The application discloses a kind of photovoltaic cell piece string welding layout equipment and its string welding method, it is related to cell piece string welding layout relevant field.The photovoltaic cell piece string welding layout equipment of the present application is driven by multiple motors in cooperation, realizes the automatic feeding of cell piece, accurate layout and orderly transport, the first motor drives driving wheel and belt, sliding member moves along square guide groove, and through the linkage piece driving auxiliary layout mechanism makes cyclic square trajectory movement, so as to ensure that the dialing bar can be evenly dialled into the cell piece on the supporting plate piece by piece, significantly improve the neatness and stability of layout;After layout is completed, third motor and second motor drive dialing plate and side plate in turn, realize dialing plate reset and position correction, avoid subsequent transport process interference cell piece arrangement, effectively guarantee layout quality;At the same time, after completing the whole layout, the equipment can automatically transport cell piece to string welding station, saves manual handling link, improves the degree of automation and operating efficiency of production line.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic cell stringing and layout, and in particular to a photovoltaic cell stringing and layout device and its stringing method. Background Technology

[0002] Photovoltaic cells are basic unit devices that directly convert sunlight into electrical energy using the photovoltaic effect. They are usually made of semiconductor materials such as monocrystalline silicon or polycrystalline silicon. Their surfaces are treated with special processes to effectively absorb sunlight and form electron-hole pairs. Under the guidance of electrodes, they generate directional current, thereby outputting electrical energy. Photovoltaic cells are generally thin sheets. Multiple cells need to be electrically connected into a cell string through processes such as layout and string welding, and then packaged into a photovoltaic module to achieve efficient conversion and stable output of light energy.

[0003] In the process of photovoltaic cell manufacturing, the cells need to go through layout and string welding processes. The layout quality and string welding accuracy directly affect the electrical performance connection between cells and the overall conversion efficiency of the module. In the existing technology, the layout of cells mostly relies on manual handling or simple mechanical structures for positioning, which is not only inefficient, but also easily leads to the cells being arranged unevenly, resulting in welding misalignment or uneven stress during string welding, which affects the product yield. Summary of the Invention

[0004] Therefore, in order to overcome the above-mentioned shortcomings, the present invention provides a photovoltaic cell stringing and layout device and a stringing method thereof.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a photovoltaic cell stringing and layout equipment, comprising a feeding device body, a layout transfer device installed on the top of the feeding device body, and a tray provided on the top of the feeding device body corresponding to the layout transfer device. The tray is used to receive the cells fed in by the feeding device body and to be transferred by the layout transfer device. The front end of the feeding device body is connected to a conveyor body, and an opening corresponding to the tray is opened on the back of the conveyor body. The stringing device body is provided at the top right end of the conveyor body. The layout transfer device includes a top plate connected to the feeding device body via an external connecting component, support rods at the four ends of the bottom of the top plate, a fixing member connected to the bottom of the support rods, a first motor at the bottom right end of the top plate, a drive wheel connected to the output shaft of the first motor, a belt on the outside of the drive wheel, a driven wheel connected to the other end of the belt, a connecting member placed above the driven wheel, an auxiliary layout mechanism connected to the lower end of the connecting member, a guide member at the bottom of the fixing member, a support member installed in the middle of the driven wheel and connected to the fixing member at the bottom, and a sliding member sleeved on the right end of the support member.

[0006] Preferably, the bottom center of the fixing member protrudes, and the protrusion position matches that of the guide member. The bottom center of the guide member also protrudes, but is perpendicular to the protrusion position of the fixing member. This protrusion position is connected to the auxiliary layout mechanism.

[0007] Preferably, the bottom of the slider is protruding, and the top of the fixing member is provided with a square guide groove, and the protruding part of the bottom of the slider is movably embedded into the square guide groove.

[0008] Preferably, the auxiliary layout mechanism includes a fixed box connected to the bottom of the sliding member and connected to the connecting member at both ends, a sliding member disposed inside the fixed box, a second motor disposed at the front end of the fixed box, side plates installed at the front and rear ends of the bottom of the sliding member, a transmission box disposed at the front end of the front side plate, a third motor disposed at the front end of the transmission box, a toggle plate disposed inside the side plate, and a threaded rod disposed inside the fixed box and connected to the sliding member. A through groove is opened in the middle of the guide member, and the sliding member is movably embedded into the through groove.

[0009] Preferably, the upper end of the fixed box is provided with a groove corresponding to the bottom protrusion of the guide member, and the two are matched.

[0010] Preferably, the middle part of the slide is threadedly connected to the threaded rod.

[0011] Preferably, the upper end of the transmission box is provided with a drive pulley that connects to the output shaft of the third motor. The outer side of the drive pulley rotates synchronously with the driven pulley via a synchronous belt. A shaft is installed in the middle of the driven pulley, and the shaft passes through the transmission box and the middle of the side plate connecting the actuation plate.

[0012] Preferably, the top of the actuating plate is provided with a scraping strip, and the bottom of the actuating plate is provided with an actuating strip.

[0013] Preferably, the actuating bar is trapezoidal in shape.

[0014] The preferred method for string soldering includes the following steps:

[0015] S1 feeding: The external feeding equipment feeds the solar cells one by one into the main body of the feeding device at equal intervals for transmission, and the solar cells are transported to the pallet in sequence to complete the feeding and conveying of a batch of solar cells.

[0016] S2 typesetting drive: The first motor is started to drive the drive wheel to rotate. The drive wheel drives the driven wheel to rotate through the belt. The support on the inside of the driven wheel drives the sliding part to move along the square guide groove. The connecting part at the top of the sliding part drives the auxiliary typesetting mechanism to move accordingly.

[0017] S3 Battery Cell Actuation: Under the guidance of the auxiliary layout mechanism, the lower actuation bar moves in a circular square trajectory, so that the actuation bar contacts the battery cells one by one and moves them onto the tray to complete the neat layout.

[0018] S4 Layout Reset: After completing the layout of a batch of battery cells, the third motor is started to drive the active pulley to rotate. The active pulley drives the driven pulley to rotate through the synchronous belt. The driven pulley shaft drives the actuating plate to rotate to the horizontal position to avoid the actuating plate interfering with the completed layout.

[0019] S5 Lateral Correction: Start the second motor to drive the threaded rod to rotate, and the threaded rod drives the slider and side plate to move, so that the toggle plate is placed at the back of the battery cell arrangement to complete the correction and positioning;

[0020] S6 Full Sheet Conveying and String Welding: The first motor is restarted to move the full sheet of cells that have been arranged to the top of the conveyor body. The full sheet of cells is then conveyed to the bottom of the string welding device body, where the full sheet of cells is string welded.

[0021] The beneficial effects of this invention are:

[0022] This invention relates to a photovoltaic cell stringing and layout equipment. Through multi-motor collaborative drive, it achieves automated feeding, precise layout, and orderly conveying of cells. Structurally, the first motor drives the drive wheel and belt, causing the sliding component to move along a square guide groove. This, in turn, drives the auxiliary layout mechanism to perform a cyclic square trajectory movement via a connecting component. This ensures that the actuating bar can evenly push the cells onto the tray one by one, significantly improving the neatness and stability of the layout. After layout is completed, the third and second motors sequentially drive the actuating plate and side plate to reset and correct the position of the actuating plate, preventing interference with the cell arrangement during subsequent transportation and effectively ensuring layout quality. Simultaneously, after completing the layout of the entire panel, the equipment can automatically convey the cells to the stringing station, eliminating manual handling and improving the automation level and operating efficiency of the production line. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the typesetting and transfer device of the present invention;

[0025] Figure 3 This is a schematic diagram of the fastener connection structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the fastener structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the auxiliary typesetting mechanism of the present invention;

[0028] Figure 6 This is a schematic diagram of the main structure of the auxiliary typesetting mechanism of the present invention;

[0029] Figure 7This is a schematic diagram of the toggle plate structure of the present invention.

[0030] The components include: feeding device main body-1, layout and transfer device-2, conveyor main body-3, string welding device main body-4, top plate-21, support rod-22, fixing part-23, first motor-24, driving wheel-25, belt-26, driven wheel-27, connecting part-28, auxiliary layout mechanism-29, guide part-210, support part-211, sliding part-212, fixed box-291, sliding part-292, second motor-293, side plate-294, transmission box-295, third motor-296, actuating plate-297, threaded rod-298, driving pulley-295a, synchronous belt-295b, driven pulley-295c, scraping bar-297a, and actuating bar-297b. Detailed Implementation

[0031] To further explain the technical solution of the present invention, a detailed description is provided below through specific embodiments.

[0032] Please see Figure 1 This invention provides a photovoltaic cell stringing and layout equipment, comprising a feeding device body 1 for feeding cells, a layout and transfer device 2 installed on the top of the feeding device body 1, and a tray installed directly below the layout and transfer device 2. Cells can be fed from the feeding device body 1 to the top of the tray. The layout and transfer device 2 can arrange the cells fed to the top of the tray and transfer the arranged cells. The front end of the feeding device body 1 is connected to a conveyor body 3, which is used to receive the arranged cells. The rear end of the conveyor body 3 has an opening corresponding to the tray. A stringing device body 4 is provided at the top right end of the conveyor body 3, which can string the arranged cells.

[0033] Please see Figures 2-4The typesetting and transfer device 2 includes a top plate 21, which can be connected to the main body 1 of the feeding device via an external connector. The four ends of the bottom of the top plate 21 are connected to fixing members 23 via support rods 22. The right end of the bottom of the top plate 21 is connected to the first motor 24 via a locking member. The bottom output shaft of the first motor 24 is connected to the drive wheel 25. The outer side of the drive wheel 25 is connected to the driven wheel 27 via a belt 26. A connecting member 28 is provided above the driven wheel 27. The lower inner end of the connecting member 28 is locked to the auxiliary typesetting mechanism 29. The middle of the bottom end of the fixing member 23 protrudes, and the protruding position is connected to the guide... Matching the guide member 210, the bottom center of the guide member 210 is also protruding, but it is perpendicular to the protruding position of the fixing member 23. This protruding position is connected to the auxiliary layout mechanism 29. The inner side of the driven wheel 27 is fixed with a support member 211. The right end of the support member 211 is fitted with a sliding member 212. The upper end of the sliding member 212 is connected to the connecting member 28. The bottom of the sliding member 212 is protruding. The top of the fixing member 23 is provided with a square guide groove. The protruding position at the bottom of the sliding member 212 is movably embedded into the square guide groove. The bottom center of the support member 211 is connected to the center of the fixing member 23.

[0034] Please see Figure 5 and Figure 6 The auxiliary typesetting mechanism 29 includes a fixed box 291. The upper end of the fixed box 291 is provided with a sliding groove corresponding to the bottom protrusion of the guide 210. The two match. The middle part of the guide 210 is provided with a through groove. The sliding member 292 is movably embedded in the through groove. The middle right side of the fixed box 291 is provided with a second motor 293. The front and rear ends of the bottom of the sliding member 292 are welded with side plates 294. The front end of the front side plate 294 is installed with a transmission box 295. The upper end of the front surface of the transmission box 295 is provided with a third motor 296. The inner side of the two sets of side plates 294 is installed with a toggle plate 297. The middle part of the middle of the through groove in the fixed box 291 is provided with a threaded rod 298 that connects to the output shaft of the second motor 293. The middle outer side of the threaded rod 298 is threadedly connected to the sliding member 292.

[0035] The upper end of the transmission box 295 is provided with a drive pulley 295a that connects to the output shaft of the third motor 296. The outer side of the drive pulley 295a rotates synchronously with the driven pulley 295c via a synchronous belt 295b. A shaft is installed in the middle of the driven pulley 295c, which passes through the transmission box 295 and the middle of the actuating plate 297 connected to the side plate 294.

[0036] Please see Figure 7 A detachable scraping strip 297a is embedded in the top of the actuating plate 297, and a trapezoidal actuating strip 297b is installed at the bottom of the actuating plate 297. The actuating strip 297b can move the battery cells at the upper end of the tray, and the scraping strip 297a can scrape impurities on the tray.

[0037] The specific implementation process is as follows:

[0038] When it is necessary to arrange and string the battery cells, the external feeding equipment first feeds the battery cells one by one at equal left and right intervals into the main body 1 of the feeding device for transmission, so that they are transported to the pallet. After a batch is transported, the first motor 24 is started to start working. The first motor 24 drives the drive wheel 25 to rotate. During the rotation of the drive wheel 25, the belt 26 causes the driven wheel 27 to rotate. During the rotation of the driven wheel 27, the inner support 211 can move the sliding member 212. The bottom of the sliding member 212 is guided in the square guide groove, so that the connecting member 28 connected at the top moves accordingly. The connecting member 28 acts on the auxiliary arrangement mechanism 29 connected below. The auxiliary arrangement mechanism 29 can move in a circular square trajectory under the guidance of the guide member 210. During the movement, the lower actuating bar 297b contacts the passing battery cells, and can move them one by one onto the pallet for arrangement.

[0039] After a batch of cells is laid out, the third motor 296 can be started. The third motor 296 drives the drive pulley 295a to rotate, and the drive pulley 295a drives the driven pulley 295c to rotate via the synchronous belt 295b. The shaft in the middle of the driven pulley 295c drives the actuating plate 297 to rotate, keeping it in a horizontal position to prevent the actuating plate 297 from disrupting the layout position later. Then, the second motor 293 is started, and the second motor 293 drives the threaded rod 298 to rotate. During the rotation of the threaded rod 298, the sliding part 292 drives the side plate 294 to position the actuating plate 297 at the rear of the laid-out cells. Finally, the first motor 24 is restarted to move the entire layout of cells to the top of the conveyor body 3, and then the conveying begins, transporting the cells to the bottom of the stringing device body 4 for stringing.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A photovoltaic cell stringing and layout equipment, characterized in that: The device includes a feeding device body, a layout transfer device mounted on the top of the feeding device body, and a tray corresponding to the layout transfer device on the top of the feeding device body. The tray is used to receive the battery cells fed in by the feeding device body and to arrange and transfer them by the layout transfer device. The front end of the feeding device body is connected to a conveyor body, and the back of the conveyor body has an opening corresponding to the tray. The top right end of the conveyor body is provided with a string welding device body. The layout transfer device includes a top plate connected to the feeding device body via an external connecting component, support rods at the four ends of the bottom of the top plate, a fixing component connected to the bottom of the support rods, a first motor at the bottom right end of the top plate, a drive wheel connected to the output shaft of the first motor, a belt on the outside of the drive wheel, a driven wheel connected to the other end of the belt, a connecting component placed above the driven wheel, an auxiliary layout mechanism connected to the lower end of the connecting component, a guide component at the bottom of the fixing component, a support component installed in the middle of the driven wheel and connected to the fixing component at the bottom, and a sliding component sleeved on the right end of the support component. The auxiliary typesetting mechanism includes a fixed box connected to the bottom of the sliding component and connected to the connecting component at both ends, a sliding component inside the fixed box, a second motor at the front end of the fixed box, side plates installed at the front and rear ends of the bottom of the sliding component, a transmission box at the front end of the front side plate, a third motor at the front end of the transmission box, a toggle plate installed on the inner side of the side plate, and a threaded rod inside the fixed box and connected to the sliding component. The guide component has a through groove in the middle, and the sliding component is movably embedded into the through groove. The upper end of the transmission box is provided with a drive pulley that connects to the output shaft of the third motor. The outer side of the drive pulley rotates synchronously with the driven pulley via a synchronous belt. A shaft is installed in the middle of the driven pulley, which passes through the transmission box and the side plate and connects to the middle of the actuation plate. The top of the actuation plate is provided with a scraping strip, and the bottom of the actuation plate is provided with an actuation strip.

2. The photovoltaic cell stringing and layout equipment according to claim 1, characterized in that: The bottom center of the fixing component protrudes, and the protrusion position matches that of the guide component. The bottom center of the guide component also protrudes, but is perpendicular to the protrusion position of the fixing component. This protrusion position is connected to the auxiliary layout mechanism.

3. The photovoltaic cell stringing and layout equipment according to claim 2, characterized in that: The bottom of the slider is protruding, and the top of the fixing member is provided with a square guide groove. The protruding part of the bottom of the slider is movably embedded into the square guide groove.

4. The photovoltaic cell stringing and layout equipment according to claim 1, characterized in that: The upper part of the fixed box is provided with a sliding groove corresponding to the bottom protrusion of the guide component, and the two are matched.

5. The photovoltaic cell stringing and layout equipment according to claim 4, characterized in that: The middle part of the sliding member is threadedly connected to the threaded rod.

6. The photovoltaic cell stringing and layout equipment according to claim 1, characterized in that: The actuation bar is trapezoidal in shape.

7. A stringing method for a photovoltaic cell stringing and layout equipment, applicable to the photovoltaic cell stringing and layout equipment described in any one of claims 1-6, characterized in that: The specific steps are as follows: S1 feeding: The external feeding equipment feeds the solar cells one by one into the main body of the feeding device at equal intervals for transmission, and the solar cells are transported to the pallet in sequence to complete the feeding and conveying of a batch of solar cells. S2 typesetting drive: The first motor is started to drive the drive wheel to rotate. The drive wheel drives the driven wheel to rotate through the belt. The support on the inside of the driven wheel drives the sliding part to move along the square guide groove. The connecting part at the top of the sliding part drives the auxiliary typesetting mechanism to move accordingly. S3 Battery Cell Actuation: Under the guidance of the auxiliary layout mechanism, the lower actuation bar moves in a circular square trajectory, so that the actuation bar contacts the battery cells one by one and moves them onto the tray to complete the neat layout. S4 Layout Reset: After completing the layout of a batch of battery cells, the third motor is started to drive the active pulley to rotate. The active pulley drives the driven pulley to rotate through the synchronous belt. The driven pulley shaft drives the actuating plate to rotate to the horizontal position to avoid the actuating plate interfering with the completed layout. S5 Lateral Correction: Start the second motor to drive the threaded rod to rotate, and the threaded rod drives the slider and side plate to move, so that the toggle plate is placed at the back of the battery cell arrangement to complete the correction and positioning; S6 Full Sheet Conveying and String Welding: The first motor is restarted to move the full sheet of cells that have been arranged to the top of the conveyor body. The full sheet of cells is then conveyed to the bottom of the string welding device body, where the full sheet of cells is string welded.

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