A welding ribbon conveying and UV pre-curing mechanism and method

Abstract

The present invention relates to equipment and methods specifically for stringing solar cells, and more specifically to a solder ribbon handling and UV pre-curing mechanism and method, designed to address the shortcomings of existing technologies in the solder ribbon handling, positioning, and curing processes, such as insufficient precision, easy deviation, and difficult quality control. In the solder ribbon handling and UV pre-curing mechanism, each handling and pre-curing unit includes a lifting device, an adsorption plate, a pressure needle device, a UV lamp board, and M vacuum generators. The adsorption plate and M vacuum generators enable solder ribbon handling, while the UV lamp board enables UV pre-curing. The combination of the lifting mechanism and the moving device ensures precise alignment of the solder ribbon during adsorption, handling, pressing, and curing. This enables the present invention to efficiently and accurately secure the solder ribbon to the solar cell, improving process quality and production efficiency.

Description

Technical Field

[0001] The present invention relates to equipment and a method specially used for stringing solar cell sheets, and in particular to a welding ribbon conveying and UV pre-curing mechanism and method. Background Art

[0002] Reference Figure 1 A busbarless XBC battery string includes X solar cells 01 arranged in sequence, as well as a long soldering ribbon 021 of length L1 and a short soldering ribbon 022 of length L2, where X≥2; each long soldering ribbon 021 is arranged on two solar cells 01, and multiple long soldering ribbons 021 realize the series connection of the 1st to Xth solar cells 01, and two short soldering ribbons 022 are respectively arranged on the 1st and Xth solar cells 01 to draw out current; in the preparation of this busbarless XBC battery string, the soldering ribbon 02 needs to be accurately transported to the pre-printed UV glue and cured. The traditional method of transporting the soldering ribbon 02 by the stringer usually adopts a clamping mechanism to clamp the soldering ribbon 02 and place it at the designated position of the battery cell. However, in actual operation, the method of clamping and transporting the soldering ribbon has the following problems:

[0003] (1) The soldering ribbon is easy to deform: The soldering ribbon is made of thin copper-aluminum foil. During the traditional clamping and handling process, due to uneven force, the soldering ribbon is easy to flip over, affecting the subsequent positioning and pasting quality.

[0004] (2) Placement deviation: The existing clamping mechanism releases the solder ribbon at a certain height. Due to the unstable release position, the solder ribbon easily deviates from the target position after placement and cannot be accurately aligned with the UV glue, resulting in poor bonding effect.

[0005] (3) UV glue curing delay: The current transport mechanism does not integrate the UV glue pre-curing function. The solder ribbon cannot be cured immediately after being transported to the battery cell, but needs to be transported to the next station for bonding and fixing. During the transportation process, the position of the solder ribbon and the UV glue is prone to offset, affecting the final curing effect and posing a product quality risk.

[0006] Existing technologies suffer from inaccuracy, easy drift, and difficult quality control during the ribbon handling, positioning, and curing processes. Therefore, a technical solution that improves handling accuracy and stability and integrates UV adhesive pre-curing is urgently needed to optimize the manufacturing process of busbarless XBC solar cell modules and improve product quality. Summary of the Invention

[0007] The purpose of the present invention is to solve the shortcomings of the prior art in the process of solder ribbon handling, positioning and curing, such as insufficient accuracy, easy deviation and difficult quality control, and to provide a solder ribbon handling and UV pre-curing mechanism and method.

[0008] In order to solve the deficiencies of the above-mentioned prior art, the present invention provides the following technical solutions:

[0009] A solder ribbon transport and UV pre-curing mechanism, which is special in that it comprises a fixed bracket and N transport and pre-curing units; N ≥ 1;

[0010] The fixed bracket is provided with a moving device that moves in a horizontal direction, and the N transporting pre-curing units are provided on the moving device;

[0011] Each of the transport pre-curing units includes a lifting device, a pressure needle device and M vacuum generators, M ≥ 2; the lifting device is arranged on the mobile device; the pressure needle device includes a pressure needle drive assembly arranged at the driving end of the lifting device, a support plate arranged at the driving end of the pressure needle drive assembly, a pressure needle connecting plate arranged below the support plate, and a plurality of spring pressure needles arranged on the bottom surface of the pressure needle connecting plate; the support plate and the pressure needle connecting plate are connected by a plurality of connecting shafts, the top surface of the pressure needle connecting plate is provided with an adsorption plate, and the bottom surface is provided with a UV lamp board; the lifting device is used to drive the adsorption plate to move in the vertical direction;

[0012] The plurality of spring pressing pins pass through the UV lamp board and are used to press the soldering ribbon onto the solar cell sheet so that the soldering ribbon is in close contact with the UV glue;

[0013] The bottom surface of the adsorption plate is provided with M groups of adsorption holes; each group of adsorption holes is arranged in a row-column matrix, and the row direction is perpendicular to the length direction of the welding strip, and the number of rows of each group of adsorption holes is greater than or equal to 3;

[0014] Each group of adsorption holes is controlled by a vacuum generator. Each adsorption hole is connected to a suction cup. The adsorption end of each suction cup passes through the pressure needle connecting plate and UV lamp board in turn to adsorb the corresponding solder strip.

[0015] The UV lamp board includes a plurality of UV lamp beads, and the plurality of UV lamp beads are used to correspond to the positions of the UV glue on the solar cell sheet to cure the UV glue.

[0016] Furthermore, the M groups of adsorption holes are arranged in sequence along the length direction of the welding strip;

[0017] The M group of adsorption holes is used to adsorb the same long solder ribbon on two adjacent solar cells or the short solder ribbon on the same solar cell;

[0018] Every two groups of continuous adsorption holes are used to adsorb the same long welding strip on two adjacent solar cell sheets.

[0019] Furthermore, the value of M is 4;

[0020] The four groups of adsorption holes are the first group of adsorption holes, the second group of adsorption holes, the third group of adsorption holes, and the fourth group of adsorption holes;

[0021] The first group of adsorption holes and the second group of adsorption holes are used to adsorb the long welding strips on the first and second solar cell sheets among the three solar cell sheets arranged in sequence, and the third group of adsorption holes and the fourth group of adsorption holes are used to adsorb the long welding strips on the second and third solar cell sheets among the three solar cell sheets arranged in sequence.

[0022] Furthermore, the first and second adsorption holes are also used to simultaneously adsorb the short solder ribbon on the last solar cell in the previous busbarless XBC cell string and the short solder ribbon on the first solar cell in the next busbarless XBC cell string.

[0023] Furthermore, the UV lamp board includes a substrate arranged on the bottom surface of the pressure pin connecting plate, the multiple UV lamp beads arranged on the bottom surface of the substrate, and a shading assembly; the shading assembly includes a shading plate and multiple shading foams; the shading plate is located at the end of the substrate close to the adjacent transport pre-curing unit to block the UV glue on the adjacent solar cell sheets; the multiple shading foams are divided into multiple rows, and a UV lamp bead is arranged between adjacent shading foams in each row of shading foams to block the UV lamp bead; the multiple spring pressure pins pass through the substrate and are arranged in a row and column matrix; the column direction of the multiple spring pressure pins is parallel to the extension direction of the welding strip.

[0024] Furthermore, the moving device includes a linear motor and a mounting plate arranged at a driving end of the linear motor, and the vacuum generator is arranged on the mounting plate;

[0025] The lifting device includes a lifting assembly arranged on a mounting plate, a guide rail connecting plate arranged at a driving end of the lifting assembly, and a linear guide rail arranged on the guide rail connecting plate; the lifting assembly includes a servo motor, a screw rod, and a lifting cylinder connecting plate; the servo motor is arranged on the mounting plate, and the driving end is connected to the lifting cylinder connecting plate via a screw rod, and the guide rail connecting plate is arranged on the lifting cylinder connecting plate;

[0026] The press needle drive assembly includes a press needle cylinder and a press needle cylinder connecting plate; the press needle cylinder is arranged on a linear guide rail, and its driving end is connected to the press needle cylinder connecting plate, and the support plate is arranged on the press needle cylinder connecting plate.

[0027] A method for conveying and pre-curing solder strips using UV light, comprising the following steps:

[0028] Step 1: Cut the solder ribbon to be transported according to the preset length and place it in the loading area;

[0029] Step 2. Start the corresponding vacuum generator according to the length and position of the solder ribbon, then use the lifting device to lower the adsorption plate to the loading area of ​​the solder ribbon, and use the suction cups on the adsorption plate to adsorb the corresponding solder ribbon through the adsorption holes; then use the lifting device to drive the adsorption plate to the moving position, and then use the moving device to move the adsorption plate horizontally to move the solder ribbon above the solar cell; then use the lifting device to drive the adsorption plate to lower and place each solder ribbon at a preset position on the solar cell; then start the pressure needle drive component of the pressure needle device, which drives each spring pressure needle to press the corresponding solder ribbon onto the UV glue of the solar cell;

[0030] Step 3: Start the UV lamp beads on the UV lamp board to pre-cure the UV glue between the solder ribbon and the solar cell;

[0031] Step 4: Turn off the vacuum generator opened in step 2 to release the adsorption state between the adsorption plate and all the welding strips, and then use the lifting device to drive the adsorption plate to rise and return to the initial height;

[0032] Step 5: The mobile device drives the adsorption plate back to the loading area and starts a new round of operations according to steps 2 to 4 until the ribbon handling and UV pre-curing of all solar cells are completed.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] (1) In a solder ribbon conveying and UV pre-curing mechanism of the present invention, each conveying and pre-curing unit includes a lifting device, an adsorption plate, a needle pressing device, a UV lamp board and M vacuum generators; wherein the adsorption plate and the M vacuum generators realize the conveying of the solder ribbon, the UV lamp board realizes UV pre-curing, and the combination of the lifting mechanism and the moving device ensures the precise alignment of the solder ribbon during the adsorption, conveying, pressing and curing processes, so that the present invention can efficiently and accurately complete the fixing of the solder ribbon on the solar cell panel, thereby improving the process quality and production efficiency.

[0035] (2) The present invention is provided with M groups of adsorption holes, each group of adsorption holes can be independently controlled by a vacuum generator, so that welding ribbons of different lengths and specifications can be adapted by simply adjusting the grouping. A single adsorption plate can serve multiple solar cells at the same time. The present invention effectively solves the limitations of the traditional single adsorption solution during the welding ribbon transportation and UV pre-curing process, significantly improves the adaptability, accuracy and stability of the equipment, and optimizes resource utilization and maintenance costs.

[0036] (3) The present invention provides a method for conveying and UV pre-curing the solder strip, comprising the steps of: adsorbing the solder strip, lifting and moving it to a target position, pressing the solder strip and UV pre-curing it, and finally releasing the solder strip and resetting it; the present invention adopts an adsorption conveying method to replace the traditional clamping mechanism, thereby avoiding the problem of the solder strip flipping or damage caused by uneven clamping force; and ensures close contact between the solder strip and the UV glue through a needle pressing device, and provides a more secure initial fixation in combination with UV pre-curing; in addition, the lifting, translation, pressing and curing operations are automatically connected, reducing manual intervention and realizing an efficient continuous production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the structure of a busbar-less XBC battery assembly;

[0038] Figure 2 This is a structural schematic diagram of an embodiment of a solder ribbon transport and UV pre-curing mechanism of the present invention;

[0039] Figure 3 This is a schematic structural diagram of an adsorption plate and a UV lamp plate in an embodiment of the present invention;

[0040] Figure 4 Schematic diagram of the structure of the needle pressing device and the lifting device in the embodiment of the present invention;

[0041] Figure 5 Schematic diagram of the distribution of long welding ribbons of length L1 on two solar cell panels in an embodiment of the present invention;

[0042] Figure 6 Graph showing the corresponding relationship between a long welding strip of length L1 and four groups of adsorption holes in an embodiment of the present invention;

[0043] Figure 7 Schematic diagram of the distribution of short welding ribbons of length L2 on two solar cell panels in an embodiment of the present invention;

[0044] Figure 8 Graph showing the corresponding relationship between a short welding strip of length L2 and two groups of adsorption holes in an embodiment of the present invention;

[0045] The reference numerals are as follows: 01-solar cell; 02-solder ribbon; 021-long solder ribbon; 022-short solder ribbon; 03-UV adhesive;

[0046] 10-Fixed bracket;

[0047] 20-moving device; 201-linear motor; 202-mounting plate;

[0048] 30-vacuum generator;

[0049] 401 - adsorption plate; 402 - suction cup; 403 - first group of adsorption holes; 404 - second group of adsorption holes; 405 - third group of adsorption holes; 406 - fourth group of adsorption holes;

[0050] 50-needle pressing device; 501-needle pressing cylinder; 502-needle pressing cylinder connecting plate; 503-support plate; 504-connecting shaft; 505-needle pressing connecting plate; 506-spring needle pressing;

[0051] 60-lifting device; 601-servo motor; 602-screw; 603-lifting cylinder connecting plate; 604-guide rail connecting plate; 605-linear guide rail;

[0052] 70-UV lamp board; 701-substrate; 702-UV lamp beads; 703-shading plate; 704-shading foam. DETAILED DESCRIPTION

[0053] The present invention will be further described below with reference to the accompanying drawings and exemplary embodiments.

[0054] Reference Figure 2 A solder ribbon handling and UV pre-curing mechanism includes a fixed bracket 10 and N handling and pre-curing units; N≥1; in this embodiment, N is 2.

[0055] A moving device 20 that moves in a horizontal direction is provided on the fixed bracket 10 . The moving device 20 includes a linear motor 201 and a mounting plate 202 provided at a driving end of the linear motor 201 . N transport pre-curing units are provided on the mounting plate 202 .

[0056] Each transport and pre-curing unit includes a lifting device 60, an adsorption plate 401, a needle pressing device 50, a UV lamp board 70, and M vacuum generators 30; in this embodiment, the value of M is 4.

[0057] like Figure 4 As shown, the lifting device 60 includes a lifting assembly, a guide rail connecting plate 604, and a linear guide rail 605. The lifting assembly includes a servo motor 601, a screw rod 602, and a lifting cylinder connecting plate 603. The servo motor 601 is set on the mounting plate 202, and the driving end is connected to the lifting cylinder connecting plate 603 through the screw rod 602. The guide rail connecting plate 604 is set on the lifting cylinder connecting plate 603, and the linear guide rail 605 is set on the guide rail connecting plate 604.

[0058] The pressing needle device 50 includes a pressing needle drive assembly, a support plate 503, a pressing needle connecting plate 505 and multiple spring pressing needles 506. The pressing needle drive assembly includes a pressing needle cylinder 501 and a pressing needle cylinder connecting plate 502; the pressing needle cylinder 501 is arranged on a linear guide rail 605, and its driving end is connected to the pressing needle cylinder connecting plate 502, a support plate 503 is arranged on the pressing needle cylinder connecting plate 502, and the pressing needle connecting plate 505 is arranged below the support plate 503. The support plate 503 and the pressing needle connecting plate 505 are connected by six connecting shafts 504. The top surface of the pressing needle connecting plate 505 is provided with an adsorption plate 401, and the bottom surface is provided with a UV lamp board 70; multiple spring pressing needles 506 are arranged on the bottom surface of the pressing needle connecting plate 505, and pass through the substrate 701 of the UV lamp, and are used to press the welding ribbon 02 onto the solar cell panel 01 so that it is in close contact with the UV glue 03.

[0059] The pressing needle cylinder 501 is used to drive the pressing needle connecting plate 505 to move in the vertical direction; the servo motor 601 is used to drive the adsorption plate 401 to move in the vertical direction.

[0060] Reference Figure 3 The UV lamp board 70 includes a substrate 701 (copper) arranged on the bottom surface of the pressure pin connecting plate 505, a plurality of UV lamp beads 702 arranged on the substrate 701, and a light shielding component. The plurality of UV lamp beads 702 correspond to the positions of the UV glue 03 on the solar cell slice 01. The light shielding component is used to block the UV glue 03 that does not need to be cured, and includes a light shielding plate 703 and a plurality of light shielding foams 704; the light shielding plate 703 is located at the end of the substrate 701 close to the adjacent transport pre-curing unit to block the UV glue 03 on the adjacent solar cell slice 01; the plurality of light shielding foams 704 are divided into multiple rows, and a UV lamp bead 702 is set between adjacent light shielding foams 704 in each row of light shielding foams 704 to block the UV lamp bead 702.

[0061] The bottom surface of the adsorption plate 401 is provided with M groups of adsorption holes arranged in sequence along the extension direction of the welding strip 02. Each group of adsorption holes is controlled by a vacuum generator 30. Each adsorption hole is connected to a suction cup 402. The adsorption end of each suction cup 402 passes through the pressure needle connecting plate 505 and the substrate 701 of the UV lamp board 70 in sequence for adsorbing the corresponding welding strip 02.

[0062] Each group of adsorption holes is arranged in a row-column matrix, with the row direction perpendicular to the length direction of the solder strip 02 . The number of rows of each group of adsorption holes is greater than or equal to 3, that is, each solder strip 02 is adsorbed by at least three suction cups 402 .

[0063] Reference Figure 6 、 Figure 8In this embodiment, M is set to 4, and the four groups of adsorption holes are respectively the first group of adsorption holes 403, the second group of adsorption holes 404, the third group of adsorption holes 405, and the fourth group of adsorption holes 406; the first row of the second group of adsorption holes 404, the first row of the third group of adsorption holes 405, the second row of the second group of adsorption holes 404, the second row and the third row of the third group of adsorption holes 405, and the fourth row of the second group of adsorption holes 404 are arranged in sequence, and the columns of the second group of adsorption holes 404 and the third group of adsorption holes 405 are staggered;

[0064] Reference Figure 5 、 Figure 6 One adsorption plate 401 corresponds to three solar cell panels 01 arranged in sequence. The first group of adsorption holes 403 and the second group of adsorption holes 404 are used to adsorb the long solder strips 021 on the first and second solar cell panels 01 among the three solar cell panels 01 arranged in sequence. The third group of adsorption holes 405 and the fourth group of adsorption holes 406 are used to adsorb the long solder strips 021 on the second and third solar cell panels 01 among the three solar cell panels 01 arranged in sequence. Multiple light-shielding foams 704 are used to block UV glue from preset positions of the short solder strips 022 on the solar cell panels 01.

[0065] Reference Figure 7 、 Figure 8 The first group of adsorption holes 403 and the second group of adsorption holes 404 are used to simultaneously adsorb the short solder strips 022 on the last solar cell 01 in the previous busbarless XBC battery string and the first solar cell 01 in the next busbarless XBC battery string.

[0066] A method for handling and UV pre-curing a soldering ribbon, using the above-mentioned soldering ribbon handling and UV pre-curing mechanism, comprises the following steps:

[0067] Step 1: Cut the solder ribbon 02 to be transported according to a preset length (such as L1 or L2) and place it in the loading area;

[0068] Step 2: Transporting the welding ribbon 02;

[0069] Step 2.1: If it is necessary to adsorb the long solder strips 021 on the solar cell sheets 01 arranged in sequence in the same busbarless XBC battery string, start the vacuum generators 30 corresponding to the four groups of adsorption holes;

[0070] If it is necessary to adsorb the short welding strip 022 on the first solar cell 01 or the last solar cell 01 of the busbarless XBC battery string, the vacuum generator 30 corresponding to one group of adsorption holes is activated;

[0071] If it is necessary to simultaneously adsorb the short solder strip 022 on the last solar cell 01 of the previous busbar-less XBC battery string and the first solar cell 01 of the next busbar-less XBC battery string, the vacuum generators 30 corresponding to two groups of adsorption holes (the first group of adsorption holes 403 and the third group of adsorption holes 405) are activated;

[0072] Step 2.2: Start the lifting device 60, and the servo motor 601 drives the screw rod 602 to drive the adsorption plate 401 to move downward, and the linear guide rail 605 ensures the smooth downward movement of the adsorption plate 401;

[0073] Step 2.3, each suction cup 402 on the adsorption plate 401 adsorbs the corresponding solder strip 02 through the adsorption hole; then the lifting device 60 drives the adsorption plate 401 to rise to the moving position,

[0074] Step 2.4: Start the moving device 20, and the linear motor 201 drives the mounting plate 202 to move horizontally, moving the solder ribbon 02 to the top of the solar cell 01;

[0075] Step 2.5: The lifting device 60 drives the adsorption plate 401 downward to place each solder ribbon 02 at a preset position on the solar cell panel 01;

[0076] Step 2.6: Start the pressing device 50. The pressing cylinder 501 drives each spring pressing pin 506 to press the corresponding solder ribbon 02 onto the UV adhesive 03 of the solar cell 01. The pressing device 50 provides uniform pressure through multiple spring pressing pins 506 to ensure good contact between the solder ribbon 02, UV adhesive 03, and the solar cell 01. After the pressing is completed, the solder ribbon 02 is stably maintained in the designed position between the solar cell 01 and the UV adhesive 03.

[0077] Step 3: Start the UV lamp beads 702 on the UV lamp board 70 to perform local pre-curing on the UV glue 03 between the solder ribbon 02 and the solar cell sheet 01; and use the light shielding plate 703 and multiple light shielding foams 704 to block the area that does not need to be cured, ensuring that the UV light acts only on the target location;

[0078] Step 4: Turn off the vacuum generator 30 opened in step 2 to release the adsorption state between the adsorption plate 401 and all the welding ribbons 02, and then use the lifting device 60 to drive the adsorption plate 401 to rise and return to the initial height;

[0079] Step 5: The mobile device 20 drives the adsorption plate 401 back to the loading area, and steps 2 to 4 begin a new round of operations until the transfer and UV pre-curing of the solder ribbons 02 of all solar cell panels 01 are completed.

Claims

1. A ribbon handling and UV pre-curing mechanism, characterized by: It comprises a fixed support (10) and N transport pre-curing units; N≥1; The fixed bracket (10) is provided with a moving device (20) that moves in a horizontal direction, and the N transport pre-curing units are provided on the moving device (20); Each of the transport pre-curing units comprises a lifting device (60), a pressing needle device (50) and M vacuum generators (30), M≥2; the lifting device (60) is arranged on the moving device (20); the pressing needle device (50) comprises a pressing needle driving assembly arranged at the driving end of the lifting device (60), a support plate (503) arranged at the driving end of the pressing needle driving assembly, a pressing needle connecting plate (505) arranged below the support plate (503), and a plurality of spring pressing needles (506) arranged on the bottom surface of the pressing needle connecting plate (505); the support plate (503) and the pressing needle connecting plate (505) are connected via a plurality of connecting shafts (504); the top surface of the pressing needle connecting plate (505) is provided with an adsorption plate (401), and the bottom surface is provided with a UV lamp board (70); the lifting device (60) is used for driving the adsorption plate (401) to move in a vertical direction; The plurality of spring pressing pins (506) pass through the UV lamp board (70) and are used to press the welding strip (02) onto the solar cell sheet (01) so that the welding strip is in close contact with the UV glue (03); The bottom surface of the adsorption plate (401) is provided with M groups of adsorption holes; each group of adsorption holes is arranged in a row-column matrix, with the row direction perpendicular to the length direction of the welding strip (02), and the number of rows of each group of adsorption holes is greater than or equal to 3; Each group of adsorption holes is controlled by a vacuum generator (30), and each adsorption hole is connected to a suction cup (402). The adsorption end of each suction cup (402) passes through the pressure needle connecting plate (505) and the UV lamp board (70) in sequence to adsorb the corresponding welding strip (02); The UV lamp board (70) comprises a plurality of UV lamp beads (702), and the plurality of UV lamp beads (702) are used to correspond to the positions of the UV glue (03) on the solar cell sheet (01) to cure the UV glue (03).

2. The solder ribbon transport and UV pre-curing mechanism according to claim 1, characterized in that: The M groups of adsorption holes are arranged in sequence along the length direction of the welding strip (02); The M groups of adsorption holes are used to adsorb the same long welding strip (021) on two adjacent solar cell sheets (01) or the short welding strip (022) on the same solar cell sheet (01).

3. The solder ribbon transport and UV pre-curing mechanism according to claim 2, characterized in that: The value of M is 4; The four groups of adsorption holes are respectively a first group of adsorption holes (403), a second group of adsorption holes (404), a third group of adsorption holes (405), and a fourth group of adsorption holes (406); The first group of adsorption holes (403) and the second group of adsorption holes (404) are used to adsorb the long welding strips (021) on the first and second solar cell sheets (01) among three solar cell sheets (01) arranged in sequence, and the third group of adsorption holes (405) and the fourth group of adsorption holes (406) are used to adsorb the long welding strips (021) on the second and third solar cell sheets (01) among three solar cell sheets (01) arranged in sequence.

4. The solder ribbon transport and UV pre-curing mechanism according to claim 3, characterized in that: The first group of adsorption holes (403) and the second group of adsorption holes (404) are also used to simultaneously adsorb the short welding ribbon (022) on the last solar cell (01) in the previous busbar-free XBC battery string and the short welding ribbon (022) on the first solar cell (01) in the next busbar-free XBC battery string.

5. A solder ribbon transport and UV pre-curing mechanism according to any one of claims 1 to 4, characterized in that: The UV lamp board (70) comprises a base plate (701) arranged on the bottom surface of the pressure needle connecting plate (505), the plurality of UV lamp beads (702) arranged on the bottom surface of the base plate (701), and a light shielding component; the light shielding component comprises a light shielding plate (703) and a plurality of light shielding foams (704); the light shielding plate (703) is located at the end of the base plate (701) close to the adjacent transport pre-curing unit to shield the UV glue (03) on the adjacent solar cell slices (01); the plurality of light shielding foams (704) are divided into a plurality of rows, and one UV lamp bead (702) is arranged between adjacent light shielding foams (704) in each row of light shielding foams (704) to shield the UV lamp bead (702); The plurality of spring pressure pins (506) pass through the substrate (701) and are arranged in a row-column matrix; the column direction of the plurality of spring pressure pins (506) is parallel to the extension direction of the welding strip (02).

6. The solder ribbon transport and UV pre-curing mechanism according to claim 5, characterized in that: The moving device (20) comprises a linear motor (201) and a mounting plate (202) arranged at a driving end of the linear motor (201); the vacuum generator (30) is arranged on the mounting plate (202); The lifting device (60) comprises a lifting assembly arranged on a mounting plate (202), a guide rail connecting plate (604) arranged at a driving end of the lifting assembly, and a linear guide rail (605) arranged on the guide rail connecting plate (604); The lifting assembly comprises a servo motor (601), a screw rod (602), and a lifting cylinder connecting plate (603); the servo motor (601) is arranged on a mounting plate (202), and a driving end is connected to the lifting cylinder connecting plate (603) via a screw rod (602); the guide rail connecting plate (604) is arranged on the lifting cylinder connecting plate (603); The pressure needle drive assembly comprises a pressure needle cylinder (501) and a pressure needle cylinder connecting plate (502); the pressure needle cylinder (501) is arranged on a linear guide rail (605), and its driving end is connected to the pressure needle cylinder connecting plate (502), and the support plate (503) is arranged on the pressure needle cylinder connecting plate (502).

7. A method for handling and UV pre-curing a solder ribbon, using the solder ribbon handling and UV pre-curing mechanism of claim 1, comprising the following steps: Step 1: Cut the welding ribbon (02) to be transported according to a preset length and place it in the loading area; Step 2: activating the corresponding vacuum generator (30) according to the length and position of the soldering ribbon (02); then, the lifting device (60) lowers the adsorption plate (401) to the loading area of ​​the soldering ribbon (02); and each suction cup (402) on the adsorption plate (401) adsorbs the corresponding soldering ribbon (02) through the adsorption hole; then, the lifting device (60) drives the adsorption plate (401) to rise to the moving position; then, the moving device (20) moves the adsorption plate (401) horizontally to move the soldering ribbon (02) to the top of the solar cell sheet (01); then, the lifting device (60) drives the adsorption plate (401) to descend, and each soldering ribbon (02) is placed at a preset position on the solar cell sheet (01); then, the pressing needle driving component of the pressing needle device (50) is activated, and the pressing needle driving component drives each spring pressing needle (506) to press the corresponding soldering ribbon (02) onto the UV glue (03) of the solar cell sheet (01); Step 3: Start the UV lamp beads (702) on the UV lamp board (70) to perform local pre-curing on the UV glue (03) between the welding strip (02) and the solar cell sheet (01); Step 4: Turn off the vacuum generator (30) opened in step 2 to release the adsorption state between the adsorption plate (401) and all the welding strips (02), and then use the lifting device (60) to drive the adsorption plate (401) to rise and return to the initial height; Step 5: The mobile device (20) drives the adsorption plate (401) back to the loading area and starts a new round of operations according to steps 2 to 4 until the welding ribbons (02) of all solar cell sheets (01) are transported and UV pre-cured.

Images