Method for manufacturing a photovoltaic interdigitated assembly and manufacturing equipment thereof

Abstract

This application discloses a method and equipment for manufacturing photovoltaic stacked grid modules. By grouping the total solder ribbons and constructing fixed units at the beginning and end of each solder ribbon group, multiple dispersed solder ribbons can be integrated into a whole, thereby effectively avoiding the problem of solder ribbon misalignment during operation. At the same time, by using groups as units instead of traditional single-ribbed traction and laying, the frequency of repetitive operations can be reduced, solving the problem of low laying efficiency and inability to meet mass production cycle caused by the surge in the number of fine grid lines in stacked grid modules. Furthermore, by batch-producing solder ribbon groups and arranging these solder ribbon groups according to the distribution of grid lines on the solar cells, and then synchronously transporting the solder ribbon groups as a whole, multiple solder ribbons can be precisely aligned with the grid lines at one time, solving the technical problem of poor solder ribbon alignment accuracy in high-density fine grid line scenarios. By cutting off the fixed units and retaining only the independent solder ribbons, stable circuit conduction can be formed, adapting to the connection requirements of stacked grid modules without main grids and with high-density fine grid lines.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to a method and equipment for manufacturing a photovoltaic stacked busbar module. Background Technology

[0002] Cost reduction and efficiency improvement in photovoltaic modules have always been the core pursuit of the industry, and the amount of silver paste used in solar cells is a key factor affecting costs. With the continuous rise in silver prices, reducing the amount of silver paste used has become an urgent problem to be solved. Stacked busbar technology has emerged to address this issue—solar cells are printed with only fine grid lines without main grid lines, which can significantly reduce silver paste consumption.

[0003] However, tandem grid technology requires that all the fine grid lines on the solar cells be connected to corresponding solder ribbons. Conventional modules typically have 18 to 32 grid lines, while tandem grid modules can have 360 ​​or more fine grid lines. This means that the number of solder ribbons that need to be laid on a single module increases tenfold, and the solder ribbons used are extremely fine, posing a severe challenge to the laying accuracy and efficiency.

[0004] Currently, conventional module production generally adopts a method of pulling and laying single solder strips one by one. Faced with the need to lay hundreds of thin solder strips for stacked busbar modules, if this method is used, hundreds of pulling actions need to be performed repeatedly, which is extremely time-consuming and has very low production efficiency, making it difficult to meet the mass production cycle. Summary of the Invention

[0005] The purpose of this application is to overcome the shortcomings of the existing technology and provide a method and equipment for manufacturing photovoltaic stacked busbar modules.

[0006] This application provides a method for manufacturing a photovoltaic stacked grid module, comprising the following steps: preparing a strip group composed of multiple strips, wherein the strips at both ends of the strip group are fixed together to form a fixed unit for easy gripping; preparing N strip groups and arranging the N strip groups so that the strip distribution pattern matches the grid line distribution pattern on the target solar cell, wherein N is a natural number greater than 1; synchronously transporting and placing the N strip groups onto the solar cell, ensuring that the strips correspond one-to-one with the grid lines on the solar cell and are aligned vertically; cutting off the fixed unit, retaining only the multiple parallel and independent strips aligned with the grid lines to form a conductive circuit.

[0007] Furthermore, the preparation of the welding strip group includes the following steps: pulling out multiple parallel welding strips simultaneously through a traction mechanism; after pulling out the required length, fixing the multiple welding strips into one strand at the part to be cut through a fixing mechanism; cutting the welding strip at the fixed part through a cutting mechanism, so as to simultaneously obtain the tail fixed section of the current welding strip group that has been cut off, and the head fixed section of the next welding strip group to be cut off.

[0008] Furthermore, the fixing unit is formed by connecting multiple weld strips through welding, bonding or hinge, making it a rigid unit that is easy to transport as a whole.

[0009] Furthermore, throughout the entire process of preparing, arranging, and transporting the welding strips, toothed combs are used to guide and limit their movement.

[0010] Furthermore, during the process of the traction mechanism pulling the welding strip or the handling mechanism transferring the welding strip group, before the welding strip enters the downstream equipment, the toothed comb of the downstream equipment is first aligned and inserted with the toothed comb of the current equipment. After the toothed comb of the downstream equipment is inserted between multiple welding strips, the clamping or releasing action of the welding strip is then performed.

[0011] This application also provides a photovoltaic stacked module manufacturing equipment for realizing the above-mentioned photovoltaic stacked module manufacturing method, including: a ribbon group preparation device for continuously preparing ribbon groups, wherein the ribbon group consists of multiple ribbons arranged at intervals along a second horizontal direction, and the head and tail ends of the ribbon group are respectively formed with fixed units; a laying device for receiving the ribbon groups so that the ribbon groups are arranged in a form that matches the distribution pattern of the ribbons on the target solar cell; a transport device for synchronously transporting and placing multiple ribbon groups arranged on the laying device onto the solar cell; and a positioning device, wherein the positioning device includes multiple sets of combs, and the ribbon group preparation device, the laying device, and the transport device are each provided with at least one set of combs, and the combs are provided with multiple slots for guiding and limiting the multiple ribbons input in parallel, so as to constrain the relative positions of the multiple ribbons.

[0012] Furthermore, the ribbon assembly preparation device includes: a fixing mechanism for gathering and fixing multiple parallel-input ribbons together to form a fixed unit; a cutting mechanism located on one side of the fixing mechanism for cutting the fixed portion formed by the fixing mechanism to simultaneously obtain the tail fixed segment of the current ribbon assembly and the head fixed segment of the next ribbon assembly; a traction mechanism for gripping the head fixed segment and pulling the ribbon out from the fixing mechanism and the cutting mechanism; a first toothed comb located upstream of the fixing mechanism and the cutting mechanism for guiding and limiting the multiple parallel-input ribbons; the traction mechanism includes: a first clamp for clamping the head fixed segment; a lifting drive for driving the first clamp to perform a lifting movement so that the head fixed segment is raised to avoid interference from downstream components; a translation drive for driving the first clamp to move along a first horizontal direction away from the fixing mechanism and the cutting mechanism to pull out the ribbon of the required length; and a second toothed comb located adjacent to the first clamp for maintaining the positional order of the multiple ribbons at the head position of the ribbon assembly during the traction process.

[0013] Furthermore, the paving device includes multiple receiving stations, each of which is equipped with a set of positioning mechanisms. The positioning mechanisms include a second clamp and a third clamp spaced apart along a first horizontal direction. Each receiving station can receive one welding strip group, and the multiple receiving stations are spaced apart along a second horizontal direction. Along the first horizontal direction, the paving device is located downstream of the fixing mechanism and the cutting mechanism. The traction mechanism can directly pull the welding strip from the fixing mechanism and the cutting mechanism into the paving device. The paving device also includes a translation and positioning drive component, which is used to drive the positioning mechanism to move horizontally to realize the rotation of multiple receiving stations. The paving device also includes: a third toothed comb, located on one side of the second clamp; and a fourth toothed comb, located on one side of the third clamp. The third toothed comb and the fourth toothed comb cooperate to guide and limit multiple welding strips at both ends of the welding strip group.

[0014] Furthermore, the conveying device includes: a fourth clamp and a fifth clamp, which are used to clamp both ends of the welding strip assembly; a translation drive mechanism for driving the fourth clamp and the fifth clamp back and forth between the paving device and the stacking station; a lifting drive mechanism for driving the fourth clamp and the fifth clamp to move vertically; a fifth comb located on one side of the fourth clamp; and a sixth comb located on one side of the fifth clamp. The fifth comb and the sixth comb cooperate to guide and limit multiple welding strips at both ends of the welding strip assembly. The fifth comb and the sixth comb are configured to move relative to each other to apply axial tension to the welding strips clamped by the fourth clamp and the fifth clamp.

[0015] Furthermore, the manufacturing equipment includes two sets of ribbon preparation devices, which are arranged opposite to each other, with a flattening device located between them. The two sets of ribbon preparation devices cooperate to prepare two ribbon sets simultaneously. The traction mechanisms of the two sets of ribbon preparation devices have opposite traction directions, with one traction mechanism pulling the ribbon from right to left and the other pulling the ribbon from left to right. The flattening device includes multiple receiving stations and is equipped with a translation and positioning drive. When the two sets of ribbon preparation devices are working, they can simultaneously pull the ribbon to two receiving stations. After the preparation of one ribbon set is completed, the translation and positioning drive is activated to switch a new, vacant receiving station to dock with the two sets of ribbon preparation devices.

[0016] This application provides a method for manufacturing photovoltaic stacked grid modules. By grouping the total solder ribbons and constructing fixed units at the beginning and end of each solder ribbon group, multiple dispersed ultrafine solder ribbons can be integrated into a stable whole. This effectively avoids problems such as solder ribbons becoming scattered, shifted, or tangled during operation. Furthermore, by using groups as units instead of the traditional method of individually pulling and laying each ribbon, the frequency of repetitive operations can be significantly reduced, fundamentally solving the problem of low laying efficiency and inability to meet mass production cycle requirements caused by the surge in the number of fine grid lines in stacked grid modules. Further, by batch-producing solder ribbon groups and arranging them according to the grid lines on the solar cells… These solder ribbon groups are arranged in a distributed manner, and then the entire group is transported synchronously to achieve precise alignment of multiple solder ribbons with the grid lines at one time. This solves the technical problem of poor solder ribbon alignment accuracy in high-density fine grid line scenarios. By cutting off fixed units and retaining only independent solder ribbons, stable circuit conduction can be formed. While ensuring the reliability of conduction, it perfectly adapts to the connection requirements of tandem grid modules without main grids and with high-density fine grid lines. This breaks through the obstacle of tandem grid technology being unable to achieve large-scale mass production due to the bottleneck of solder ribbon laying, and helps to reduce the amount of silver paste used in solar cells, thus meeting the industry demand for cost reduction and efficiency improvement in photovoltaic modules.

[0017] This application also provides a photovoltaic stacked busbar module manufacturing equipment for implementing the above-mentioned photovoltaic stacked busbar module manufacturing method, including a ribbon preparation device, a laying device, a conveying device, and a positioning device. The ribbon preparation device is used to continuously prepare ribbon groups, the laying device is used to pick up the ribbon groups so that the ribbon groups are arranged in a form that matches the distribution pattern of the ribbons on the target solar cell, and the conveying device is used to synchronously transport and place multiple ribbon groups arranged on the laying device onto the solar cell. The ribbon preparation device, the laying device, and the conveying device all include... There is at least one set of combs for guiding and limiting multiple parallel-input solder strips. By grouping the solder strips, the traditional method of processing and laying individual solder strips is replaced by solder strip groups that can be transferred as a whole. At the same time, the combs are matched throughout the process to ensure the precise arrangement of the solder strips. This effectively solves the problems of low laying efficiency, poor alignment accuracy, and difficulty in mass production caused by the excessive number of fine grid lines in the stacked grid module. The continuous operation of the solder strip group preparation device, the laying device, and the handling device can also significantly improve production efficiency, help the stacked grid technology to be mass-produced, and achieve cost reduction and efficiency improvement of photovoltaic modules. Attached Figure Description

[0018] Figure 1 This application provides a schematic diagram of the structure of a welding strip assembly; Figure 2 This application provides a schematic diagram of the structure of multiple weld strip groups arranged together. Figure 3 A top view of the structure of a photovoltaic tandem module manufacturing equipment provided in this application; Figure 4 for Figure 3A top view of the ribbon preparation device and part of the tiling device in the photovoltaic tandem module manufacturing equipment shown; Figure 5 for Figure 3 The diagram shows a front view of the ribbon preparation device and the tiling device in the photovoltaic tandem module manufacturing equipment. Figure 6 for Figure 3 The diagram shows the front view of the ribbon preparation device in the photovoltaic stacked module manufacturing equipment after omitting the traction mechanism, and the structure of the flat laying device and the handling device. Detailed Implementation

[0019] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0020] This application provides a method for manufacturing a photovoltaic stacked grid module, comprising the following steps: preparing a strip group 1 composed of multiple strips, wherein the strips at both ends of the strip group 1 are fixed together to form a fixed unit 2 for easy gripping; preparing N strip groups 1 and arranging the N strip groups 1 so that the strip distribution pattern matches the grid line distribution pattern on the target solar cell 3, wherein N is a natural number greater than 1; synchronously transporting and placing the N strip groups 1 as a whole onto the solar cell 3, and aligning the strips with the grid lines on the solar cell 3 one-to-one; cutting off the fixed unit 2, retaining only the multiple parallel and independent strips aligned with the grid lines to form a conductive circuit.

[0021] For details, please refer to Figure 1 The welding strip group 1 described in this application is a combination unit formed by a regular arrangement of multiple welding strips. Its main body is composed of multiple welding strips that are equally spaced along the second horizontal direction, and the welding strips of the main body are all extended along the first horizontal direction. The first horizontal direction, the second horizontal direction and the vertical direction are perpendicular to each other.

[0022] Continue to refer to Figure 1 The welding strips at both ends of welding strip group 1 (i.e., the left and right ends in the figure) are fixed into a single strand to form a rigid unit (i.e., fixed unit 2) that is easy to transport as a whole.

[0023] In simple terms, the ribbon assembly 1 described in this application is an integral ribbon assembly unit composed of multiple parallel ribbons, with both its head and tail fixed and forming an integrated structure. This head and tail fixing unit provides a stable clamping reference and positioning basis for the gripping, translation, transfer, and subsequent docking of the ribbon assembly 1 with the grid lines of the battery cell 3. Constructing fixing units 2 at both ends facilitates use and prevents problems such as scattering, offsetting, and tangling of the multiple ribbons during the transfer process, effectively ensuring precise alignment of the ribbons and the grid lines.

[0024] Combined with reference Figure 2 After preparing N ribbon groups 1, arrange them side by side along the second horizontal direction; strictly match the distribution pattern of the grid lines on the target cell 3 during the arrangement to ensure that the overall ribbon distribution pattern after all ribbon groups 1 are combined is completely consistent with the distribution of the grid lines on the cell 3.

[0025] In one specific embodiment, the spacing between two adjacent solder strips in each solder strip group 1 is L; after N solder strip groups 1 are arranged, the spacing between two adjacent solder strip groups 1 is also L.

[0026] After the N solder ribbon groups 1 are arranged, they are transported and transferred as a whole, and finally placed smoothly on the preset positions on the solar cell 3, ensuring that each solder ribbon is precisely aligned vertically with a grid line on the solar cell 3 to complete the overlapping and bonding. Then, the fixing units 2 at the beginning and end are cut off, leaving only the solder ribbons that are aligned with the grid lines and extend in a straight line, thus forming a stable circuit conduction structure.

[0027] Compared to the traditional method of pulling and laying each strip individually, this method groups a large number of welding strips and prepares, arranges, and transports them as a whole, with each welding strip group 1 as a unit. This eliminates the need to repeatedly pull and position each fine welding strip, which greatly simplifies the laying process of high-density fine welding strips and simultaneously improves laying efficiency and alignment accuracy. This solves the problem of difficult laying and inability to mass-produce stacked grid modules due to the large number of grid lines.

[0028] Taking a stacked grid assembly with 360 fine grid lines as an example, this assembly requires the solder ribbons to be connected one-to-one with the 360 ​​fine grid lines on the solar cell 3. In this case, the total number of solder ribbons is allocated into 10 solder ribbon groups 1, and each solder ribbon group 1 needs to contain 36 solder ribbons arranged at intervals along the second horizontal direction.

[0029] Specifically, firstly, 10 solder ribbon groups 1 of this specification are prepared sequentially, and these 10 solder ribbon groups 1 are arranged side by side along the second horizontal direction, while ensuring that the distribution of the 360 ​​solder ribbons is completely matched with the distribution of the 360 ​​grid lines on the battery cell 3; then, the 10 solder ribbon groups 1 are transported synchronously above the battery cell 3 and precisely lowered, so that each solder ribbon can overlap with the corresponding grid line; finally, the fixing units 2 at the beginning and end of each solder ribbon group 1 are cut off, completing the solder ribbon laying and circuit conduction construction of the component.

[0030] The photovoltaic stacked grid module manufacturing method provided in this application integrates multiple dispersed ultra-fine solder strips into a stable whole by grouping the total solder strips and constructing fixed units 2 at the beginning and end of each solder strip group 1. This effectively avoids problems such as solder strips becoming scattered, shifted, or tangled during operation. At the same time, replacing the traditional single-strand traction and laying with groups as units can significantly reduce the frequency of repetitive operations, fundamentally solving the problem of low laying efficiency and inability to meet mass production cycle time caused by the surge in the number of fine grid lines in the stacked grid module. Furthermore, by batch-producing solder strip groups 1 and according to the grid lines on the solar cells 3... These solder ribbon groups 1 are arranged in a cloth pattern, and then these solder ribbon groups 3 are transported synchronously as a whole, so as to achieve precise alignment of multiple solder ribbons with the grid lines at one time. This solves the technical problem of poor solder ribbon alignment accuracy in high-density fine grid line scenarios. By cutting off the fixed unit 2 and retaining only the independent solder ribbons, a stable circuit can be formed. While ensuring the reliability of the circuit, it perfectly adapts to the connection requirements of stacked grid modules without main grids and with high-density fine grid lines. This breaks through the obstacle that stacked grid technology cannot be mass-produced due to the bottleneck of solder ribbon laying, and helps to reduce the amount of silver paste used in solar cells, thus meeting the industry demand for cost reduction and efficiency improvement of photovoltaic modules.

[0031] Further, the preparation of the welding strip group 1 includes the following steps: multiple parallel welding strips are simultaneously pulled out by the traction mechanism 130; after being pulled out to the required length, the multiple welding strips are fixed together at the cutting point by the fixing mechanism 110; the welding strip is cut at the fixed point by the cutting mechanism 120, so as to simultaneously obtain the tail fixed segment of the current welding strip group 1 and the head fixed segment of the next welding strip group 1 to be cut. It should be noted that the head fixed segment and the tail fixed segment are both fixed units 2, and the names are distinguished for the convenience of explanation and understanding of the process.

[0032] Specifically, when preparing the welding strip group 1, the traction mechanism 130 (details of the specific equipment are described below) simultaneously pulls out multiple parallel welding strips. After the welding strips are pulled out to the length that matches the grid lines, the fixing mechanism 110 gathers and fixes the multiple welding strips into one strand at the preset cutting position (only the welding strips at this position are fixed together, while the welding strips at other positions maintain a straight extension and a spaced distribution under the influence of the comb). Then, the cutting mechanism 120 cuts the welding strip at the fixed position.

[0033] At this point, what is cut off is "current ribbon group 1", and the new free end is the head of the next ribbon group 1. Since the fixed part is cut off, the ribbon will not loosen after the cut. Instead, the fixed part is divided into two fixed units 2 - what is cut off is the tail fixed section of the current ribbon group 1, and the remaining new free end is the head fixed section of the next ribbon group 1.

[0034] Once the preparation is completed in one go, the traction mechanism 130 can pull out multiple parallel welding strips again by clamping the newly made head fixing section, thus starting the next round of preparation.

[0035] This preparation method can continuously pull, fix and cut the welding strip, and simultaneously form the tail fixing section of the current welding strip group 1 and the head fixing section of the next welding strip group 1 in one go. It eliminates the need to process the head and tail fixing units 2 of the welding strip group 1 separately in steps, thereby simplifying the preparation process of the welding strip group 1, improving the forming efficiency of the welding strip group 1, and ensuring the structural regularity of the fixing unit 2, providing a stable clamping foundation for the subsequent arrangement and overall handling of the welding strip group 1.

[0036] Among them, the fixed unit 2 is formed by connecting multiple welding strips through welding, bonding or hinge, and is a rigid unit that is easy to transport as a whole.

[0037] Specifically, the fixed unit 2 can be formed in three ways.

[0038] The first method involves fixing multiple welding strips together by welding. In this case, resistance welding, hot melt welding, or other methods can be used to fuse the welding strips together.

[0039] The second method involves fixing multiple solder strips together by adhesive bonding. In this case, an adhesive suitable for photovoltaic operating conditions is required to bond and solidify the multiple solder strips together.

[0040] The third method involves fixing multiple welding strips together using a hinge. In this case, the welding strips need to be twisted together by rotation to form a connection.

[0041] All three methods can connect the parts of multiple welding strips to be cut together to form a fixed unit 2. The rigid fixed unit 2 can integrate multiple scattered welding strips into a whole structure, providing a reliable clamping foundation for the overall handling of the welding strip group 1.

[0042] Optionally, in the entire process of preparing, arranging and transporting the welding strip group 1, the welding strip is guided and limited by a toothed comb.

[0043] Specifically, the comb is a comb-shaped guide and limiting component with multiple slots. In the entire process of preparing, arranging and transporting the welding strip group 1, combs are required to be installed upstream of the fixing mechanism 110 and cutting mechanism 120 of the welding strip group preparation device 100, beside the clamp of the traction mechanism 130, beside the clamp of the laying device 200, and beside the clamp of the transport device 300, to ensure that the welding strip can be limited and constrained in each stage, thereby maintaining a state that matches the grid line distribution pattern.

[0044] During use, ensure that the parallel welding strips are always bound one-to-one in the slots of the comb. The slots provide continuous constraint on the welding strips, which can maintain the spacing and arrangement of the welding strips during the traction, arrangement of the welding strip group 1, and overall transportation.

[0045] In one embodiment, during the process of the traction mechanism 130 pulling the welding strip or the conveying mechanism 300 transferring the welding strip group 1, before the welding strip enters the downstream equipment, the tooth comb of the downstream equipment is first aligned and inserted with the tooth comb of the current equipment. After the tooth comb of the downstream equipment is inserted between multiple welding strips, the clamping or releasing action of the welding strip is then performed.

[0046] In an easy-to-understand manner, during the process of the welding strip entering the laying device 200 (downstream device) from the fixing mechanism 110 and the cutting mechanism 120 (current equipment), and the welding strip entering the conveying device 300 (downstream device) from the laying device 200 (current equipment), in order to avoid displacement of the welding strip and damage to the distribution pattern, it is necessary to first insert the comb between the welding strips and then drive the welding strips to move, so as to ensure that the welding strips are always bound.

[0047] The toothed comb can limit the relative position between the welding strips and ensure that the welding strip group 1 maintains the preset posture. At the same time, the alignment and insertion between the toothed combs can also rely on the physical limit between the toothed combs (the position of the toothed comb is the most stable state where the welding strips are separated. At this time, the toothed comb descends close to or even against the toothed comb. In the case of tooth-to-tooth and slot-to-slot, it can ensure that the teeth are accurately inserted between the welding strips), which can become the alignment basis between the equipment and ensure that each equipment can accurately perform welding strip actions.

[0048] Specifically, the alignment and insertion between the combs refers to the process where the comb of the downstream device is aligned with the comb of the upstream device, and the two combs approach each other in a close or adjacent manner, ultimately achieving accurate insertion of the downstream comb.

[0049] Taking the example of the conveying device 300 grabbing the welding strip group 1 from the flattening device 200, the comb opening in the flattening device 200 is at the top, and the comb opening in the conveying device 300 is at the bottom. The conveying device 300 moves to directly above the flattening device 200, and the combs of the two are opposite each other in the vertical direction but staggered in the first horizontal direction. The conveying device 300 descends and approaches the welding strip group 1. The comb in the conveying device 300 continuously approaches the comb in the flattening device 200 and finally inserts into the welding strip from top to bottom, touching the comb in the flattening device 200. After the comb in the conveying device 300 is inserted, the conveying device 300 grabs the fixing unit 2 at the head and tail of the welding strip group 1, and the flattening device 200 releases the fixing unit 2 to allow the welding strip group 1 to move.

[0050] More specifically, this alignment and insertion can be achieved in two ways. First, the lower opening of the comb in the transport device 300 is lower than the clamping point height of the fixture. In this way, when the transport device 300 descends to pick up the welding strip group 1, its comb will insert into the welding strips first. Second, an auxiliary lifting driver is configured for the comb in the transport device 300. By independently driving the comb to rise and fall, it descends to its position before the fixture and inserts into the welding strips. By allowing the downstream comb to insert into the welding strips first, and then allowing the downstream fixture to perform clamping and releasing actions, it is ensured that the welding strips are always constrained by the comb when transferred between different devices, preventing the welding strips from shifting or scattering, maintaining a stable arrangement spacing and positional accuracy throughout the process, and ensuring the accuracy of the transfer and docking of the welding strip group 1. Similarly, the comb of the traction mechanism 130 can also be configured in this way to ensure that the welding strips are first bound and then moved when picking up the head fixed section.

[0051] It is easy to understand that for combs with slot openings at the top (such as combs in the flattening device 200 or combs at the stacking station), the upper opening can be set higher than the clamping point of the corresponding fixture. In this way, when picking up the welding strip group 1 falling from top to bottom, it can be ensured that the comb is inserted into the welding strip first and plays a limiting role.

[0052] This application also provides a photovoltaic stacked module manufacturing equipment for realizing the above-mentioned photovoltaic stacked module manufacturing method, including: a ribbon group preparation device 100 for continuously preparing ribbon groups 1, the ribbon group 1 being composed of multiple ribbons arranged at intervals along a second horizontal direction, and fixing units 2 being formed at both ends of the ribbon group 1; a paving device 200 for receiving the ribbon group 1 so that the ribbon group 1 is arranged in a form that matches the distribution pattern of the ribbons on the target solar cell 3; a transport device 300 for synchronously transporting and placing multiple ribbon groups arranged on the paving device 200 onto the solar cell 3; and a positioning device, the positioning device including multiple sets of combs, each of the ribbon group preparation device 100, the paving device 200 and the transport device 300 being provided with at least one set of combs, the combs being provided with multiple slots for guiding and limiting the multiple ribbons input in parallel, so as to constrain the relative positions of the multiple ribbons.

[0053] For details, please refer to Figures 3 to 6 In the illustrated embodiment, the ribbon assembly preparation device 100 is located at the upstream station of the entire process flow and is used for continuous automated production of ribbon assemblies 1. By setting up the ribbon assembly preparation device 100, ribbon assemblies 1 consisting of multiple ribbons arranged at intervals along the second horizontal direction and having fixed units 2 at both ends can be produced in batches, providing a standard integral ribbon assembly unit for stacking operations.

[0054] Continue to refer to Figures 3 to 6 The tiling device 200 is located downstream of the ribbon preparation device 100. It is used to receive and fix the ribbon group 1 output by the ribbon preparation device 100, so as to arrange multiple ribbon groups 1 in an orderly manner so that the ribbon distribution and the grid line distribution of the target cell 3 are completely matched, thus preparing for the overall handling.

[0055] Continue to refer to Figure 3 and Figure 6 The transport device 300 is set up in relation to the flattening device 200 and the stacking station, and can move back and forth between the two. The battery cells 3 will be arranged in advance at the stacking station. The transport device 300 is responsible for transporting and accurately placing the multiple welding strip groups 1 arranged on the flattening device 200 onto the battery cells 3 in one go, as a whole, synchronously.

[0056] Continue to refer to Figures 3 to 6 The positioning device consists of multiple sets of toothed combs (i.e., the first toothed comb 140, the second toothed comb 134, the third toothed comb 240, the fourth toothed comb 250, the fifth toothed comb 350 and the sixth toothed comb 360 in the following text). These toothed combs are respectively assembled at the corresponding workstations of the welding strip preparation device 100, the spreading device 200 and the conveying device 300 to ensure that the welding strip maintains the preset distribution pattern in these devices.

[0057] Specifically, the comb itself extends along the second horizontal direction to adapt to the distribution of the welding strips; the comb is provided with multiple slots, which are equally spaced along the second horizontal direction. Each slot is used to accommodate one welding strip, which can continuously guide and limit the parallel welding strips and stably constrain the relative positions of each welding strip.

[0058] In some embodiments, a toothed comb is also provided at the stacking station for alignment and insertion with the toothed comb of the conveying device 300 to ensure the stability of the distribution pattern of the welding strip throughout the entire process.

[0059] It should be added that after the conveying device 300 transfers the welding strip group 1 to the position, the fixing units 2 at both ends can be cut off manually, or a cutting device can be set up at the stacking station to achieve automated cutting.

[0060] Taking a stacked grid assembly with 360 fine grid lines as an example, the ribbon preparation device 100 continuously prepares 10 ribbon groups 1, each containing 36 ribbons, and then transports them sequentially to the flattening device 200. The flattening device 200 arranges the 10 ribbon groups 1 neatly along the second horizontal direction. Subsequently, the transport device 300 transports the 10 arranged ribbon groups 1 as a whole to the top of the battery cell 3 and precisely lowers them, so that each ribbon is aligned vertically with the grid line of the battery cell 3. Then, all fixed units 2 are cut off manually or by a cutting device, leaving the independent ribbons to form a circuit and complete the stacking operation. During this process, a comb is always inserted between the ribbons to ensure that the ribbons maintain the preset spacing throughout the process.

[0061] The photovoltaic stacked grid module manufacturing equipment provided in this application replaces the traditional method of processing and laying individual solder strips one by one with a group of solder strips that can be transferred as a whole. At the same time, the entire process is equipped with a toothed comb to ensure the precise arrangement of the solder strips. This effectively solves the problems of low laying efficiency, poor alignment accuracy, and difficulty in mass production caused by the excessive number of fine grid lines in stacked grid modules. The continuous operation of the solder strip group preparation device 100, the laying device 200, and the handling device 300 can also significantly improve production efficiency, help the stacked grid technology to be implemented in mass production, and achieve cost reduction and efficiency improvement of photovoltaic modules.

[0062] In one embodiment, the ribbon preparation apparatus 100 includes: a fixing mechanism 110 for gathering and fixing multiple parallel-input ribbons together to form a fixing unit 2; a cutting mechanism 120, located on one side of the fixing mechanism 110, for cutting the fixing portion formed by the fixing mechanism 110 to simultaneously obtain the tail fixing section of the current ribbon group 1 and the head fixing section of the next ribbon group 1; a traction mechanism 130 for gripping the head fixing section and pulling the ribbon from the fixing mechanism 110 and the cutting mechanism 120 to a predetermined length; and a first comb 140, located upstream of the fixing mechanism 110 and the cutting mechanism 120, for... The traction mechanism 130 is used to guide and limit multiple welding strips input in parallel. The traction mechanism 130 includes: a first clamp 131 for clamping the head fixing segment; a lifting drive 132 for driving the first clamp 131 to move up and down so that the head fixing segment is raised to avoid interference from downstream components; a translation drive 133 for driving the first clamp 131 to move along a first horizontal direction away from the fixing mechanism 110 and the cutting mechanism 120 to pull out the welding strip of the required length; and a second comb 134, which is disposed adjacent to the first clamp 131, for maintaining the positional order of the multiple welding strips at the head position of the welding strip group 1 during the traction process.

[0063] Specifically, the welding strip preparation device 100 also includes an unwinding mechanism, which consists of multiple unwinding rollers. Each unwinding roller can independently load welding strip rolls and can simultaneously release multiple parallel welding strips. The fixing mechanism 110 and the cutting mechanism 120 are located downstream of the unwinding mechanism. After being output from the unwinding mechanism, the multiple welding strips are conveyed in a straight line to the fixing mechanism 110 and the cutting mechanism 120.

[0064] For details, please refer to Figures 3 to 6 In the illustrated embodiment, the fixing mechanism 110 is used to gather and fix multiple parallel-input welding strips into one piece to form a fixing unit 2. The fixing mechanism 110 includes a gathering part and a fixing part. The gathering part is similar to a clamp and consists of two relatively movable clamping plates. Multiple parallel welding strips pass through the two clamping plates. When the two clamping plates approach each other, the welding strips located between the clamping plates can be gathered into one piece. To ensure that the multiple welding strips do not disperse vertically or detach from the gathering area of ​​the clamping plates when they are gathered into one piece, the parts of the clamping plates that contact the welding strips can be set in a V-shape or U-shape to form a certain three-dimensional space and effectively constrain the welding strips. The fixing part can be fixed into one piece by welding, bonding or hinge. This application does not limit the specific configuration of the gathering part and the fixing part, as long as the former can gather multiple welding strips into one piece and the latter can fix the part that is gathered into one piece.

[0065] Continue to refer to Figures 3 to 6The cutting mechanism 120 is disposed adjacent to one side of the fixing mechanism 110 and is used to cut off the fixing part and simultaneously form the tail fixing section of the current welding strip group 1 and the head fixing section of the next welding strip group 1. The cutting mechanism 120 includes a cutter and a cutting drive, which can be any driver such as a cylinder or electric cylinder that can drive the cutter closer to or away from the fixing part.

[0066] Continue to refer to Figures 3 to 6 The traction mechanism 130 includes a first clamp 131, a lifting drive 132, a translation drive 133, and a second comb 134. The first clamp 131 is used to clamp the head fixing section. The lifting drive 132 (which can be a cylinder, electric cylinder, etc.) can drive the first clamp 131 to lift and lower, so as to lift the head fixing section during the tape pulling stage and avoid interference from downstream components. The translation drive 133 (which can be a cylinder, electric cylinder, etc.) can drive the first clamp 131 to move along the first horizontal direction to pull out the required length of welding strip.

[0067] Continue to refer to Figures 3 to 6 The first comb 140 is located near the fixing mechanism 110 and the cutting mechanism 120 and is upstream of them, and is used to initially guide and limit the spacing of multiple parallel input welding strips.

[0068] As is easily understood, the first comb 140 initially receives the input welding strip, and downstream of it are the fixing mechanism 110 and the cutting mechanism 120. The traction mechanism 130 is positioned above and is used to move downstream of the fixing mechanism 110 and the cutting mechanism 120. The second comb 134 is positioned adjacent to the first clamp 131. When the first clamp 131 descends and clamps the head fixing section, the second comb 134 will insert between the welding strips, replacing the first comb 140 and maintaining the arrangement order of the welding strips at the head of the welding strip group 1.

[0069] In one specific embodiment, multiple parallel welding strips are first limited by the slots of the first comb 140, and then enter the fixing mechanism 110. The fixing mechanism 110 includes two clamping blocks that can move towards each other, and welding heads are disposed in the clamping blocks; the welding strips pass between the two clamping blocks; after the welding strips are pulled out to the required length, the two clamping blocks move closer to each other and gather the welding strips together, the welding heads heat up and weld the welding strips between the clamping blocks together to form a fixed part. After welding is completed, the cutting mechanism 120 divides the fixed part into two parts to obtain the tail fixing section of the current welding strip group 1 and the head fixing section of the next welding strip group 1. The current welding strip group 1 enters the laying device 200. The first clamp 131 descends under the drive of the lifting drive 132 and clamps the newly made head fixing section. At the same time, the second comb 134 is positioned near the first comb 140 and inserts between the welding strips based on the clearly opened welding strip intervals of the first comb 140 (alignment insertion). The first clamp 131 rises and lifts the head fixing section to avoid interference from downstream components. The translation drive 133 then drives the first clamp 131 to move along the first horizontal direction to pull out the welding strip of a preset length. The second comb 134 maintains the positional order of the head welding strip throughout the process. Afterward, the fixing mechanism 110 fixes the welding strip again, and the cutting mechanism 120 cuts the welding strip at the fixed position... In this way, the preparation of welding strip group 1 is carried out continuously.

[0070] The ribbon assembly preparation device 100 provided in this application realizes the integrated, continuous, and automated preparation of ribbon assembly 1. During the ribbon pulling process, the second comb 134 and the first comb 140 provide dual protection for the ribbon arrangement accuracy at both ends. The lifting design of the traction mechanism 130 can avoid ribbon abrasion damage. The fixing mechanism 110 and the cutting mechanism 120 work together to simultaneously form the head and tail fixing units 2, thereby simplifying the preparation process of ribbon assembly 1 and improving the forming efficiency. The ribbon assembly preparation device 100 provided in this application effectively solves the technical problems of high difficulty, low efficiency, and easy deviation in the group processing of ultra-fine ribbons for stacked busbar modules, and provides a stable and reliable supply of ribbon assembly 1 for the large-scale mass production of stacked busbar modules.

[0071] It should be noted that in the photovoltaic grid module manufacturing equipment provided in this application, each device is equipped with a clamp for holding the fixing unit 2, and in conjunction with a lifting or translation driver, the welding strips are pulled or transferred. Each clamp is equipped with a toothed comb. When the clamp holds the fixing unit 2, the toothed comb is inserted inside the fixing unit 2 between the welding strips that are not fixed together, which can spread the welding strips and ensure that the welding strip parts that do not constitute the fixing unit 2 are in a preset distribution state of being parallel, horizontal, and spaced apart.

[0072] In one embodiment, a conveying device 300, or additionally equipped with an overhead crane, robot or other automated conveying equipment, is used to receive the solder strip group 1 produced by the solder strip group preparation device 100 and transfer it to the spreading device 200.

[0073] In another embodiment, the paving device 200 includes multiple receiving stations, each receiving station being equipped with a set of positioning mechanisms. The positioning mechanisms include a second clamp 210 and a third clamp 220 spaced apart along a first horizontal direction. Each receiving station can receive one welding strip group 1, and the multiple receiving stations are spaced apart along a second horizontal direction. Along the first horizontal direction, the paving device 200 is located downstream of the fixing mechanism 110 and the cutting mechanism 120, and the traction mechanism 130 can pull the welding strip from the fixing mechanism 110 and the cutting machine. The structure 120 is directly pulled into the flattening device 200; the flattening device 200 also includes a translation and positioning drive 230, which is used to drive the positioning mechanism to move horizontally so as to realize the rotation of multiple receiving stations; the flattening device 200 also includes: a third toothed comb 240, which is located on one side of the second clamp 210; a fourth toothed comb 250, which is located on one side of the third clamp 220; the third toothed comb 240 and the fourth toothed comb 250 cooperate to guide and limit multiple welding strips in the welding strip group 1 at both ends.

[0074] For details, please refer to Figures 3 to 6 In the illustrated embodiment, the paving device 200 is located downstream of the fixing mechanism 110 and the cutting mechanism 120 along the first horizontal direction and is located on the traction path of the traction mechanism 130. The traction mechanism 130 can directly pull the welding strip from the fixing mechanism 110 and the cutting mechanism 120 into the receiving station where the paving device 200 is connected.

[0075] Continue to refer to Figures 3 to 6 Each positioning mechanism includes a second clamp 210 and a third clamp 220. The second clamp 210 and the third clamp 220 constituting a positioning mechanism are spaced apart along a first horizontal direction, so that the clamp away from the fixing mechanism 110 grips the head fixing section of the welding strip group 1, while the other clamp close to the fixing mechanism 110 grips the tail fixing section of the welding strip group 1, thereby achieving stable holding of the welding strip group 1 at the receiving station.

[0076] Continue to refer to Figures 3 to 6 The laying device 200 is equipped with multiple positioning mechanisms arranged side-by-side along a second horizontal direction. Each positioning mechanism can fix a welding strip group 1 using two clamps (second clamp 210 and third clamp 220) at one end and one end. The multiple positioning mechanisms are mounted on a mounting plate, which is connected to a translational shifting drive 230, which can be a linear actuator such as a pneumatic cylinder or an electric cylinder. After one positioning mechanism acquires the welding strip group 1, the translational shifting drive 230 can drive the mounting plate to move along the second horizontal direction so that a new vacant receiving station can connect to the welding strip group preparation device 100.

[0077] Continue to refer to Figures 3 to 6The third comb 240 is located on one side of the second clamp 210, and the fourth comb 250 is located on one side of the third clamp 220. The third comb 240 and the fourth comb 250 are located between the two clamps, and the two can synchronously guide and limit the multiple welding strips in the welding strip group 1 at the head and tail.

[0078] In one specific embodiment, the traction mechanism 130 pulls the welding strip into the receiving station currently docked with the welding strip assembly preparation device 100 by lifting the strip and handing over the head fixing section to a set of clamps (such as the third clamp 220) away from the welding strip assembly preparation device 100. During the handover process, the second comb 134 descends with the head fixing section, and the second comb 134 can approach the fourth comb 250. Relying on the alignment and insertion between the combs, the welding strip is made to fall accurately and one-to-one into the slots of the fourth comb 250. As the head fixing section is lowered, the welding strip returns to a horizontally extended state. Due to the other set of clamps near the welding strip assembly preparation device 100 and the combs on its side (such as the third clamp 220), the welding strip is also moved away from the welding strip assembly preparation device 100. As the second clamp 210 and the third comb 240 approach the first comb 140, the ends of the welding strip are steadily supported by the fourth comb 250 and the first comb 140, and the welding strip can also accurately fall into the slot of the third comb 240. The fixing mechanism 110 and the cutting mechanism 120 cooperate to produce the tail fixing section. Before the fixing mechanism 110 releases the welding strip, another set of clamps (such as the second clamp 210) near the welding strip group preparation device 100 clamps the tail fixing section. After the fixing mechanism 110 and the cutting mechanism 120 release the welding strip, the translation and positioning drive 230 drives the mounting plate to move horizontally, switching the next vacant receiving station to the docking position so as to receive the next welding strip group 1. In this way, the translation and positioning drive 230 alternates the stations one after another, and finally arranges the required number of welding strip groups 1 neatly along the second horizontal direction to form a welding strip group array that perfectly matches the grid line distribution on the battery cell 3.

[0079] In this embodiment, the flattening device 200 can directly receive the ribbon group 1 output by the ribbon group preparation device 100 without adding a transfer step for the ribbon group 1; furthermore, through multi-station rotation, the continuous and orderly arrangement of the ribbon group 1 can be achieved; during the entire process of preparing and arranging the ribbon group 1, the third comb 240 and the fourth comb 250 are involved, which can provide double protection at both ends of the ribbon group 1, ensuring the arrangement accuracy of the ribbon, improving the arrangement efficiency and alignment accuracy of the high-density ribbon group 1, and laying a stable foundation for subsequent overall handling and stacking operations.

[0080] In one embodiment, the conveying device 300 includes: a fourth clamp 310 and a fifth clamp 320, which are used to clamp both ends of the welding strip group 1; a translation drive mechanism 330 for driving the fourth clamp 310 and the fifth clamp 320 back and forth between the laying device 200 and the stacking station; a lifting drive mechanism 340 for driving the fourth clamp 310 and the fifth clamp 320 to move in the vertical direction; a fifth comb 350 disposed on one side of the fourth clamp 310; and a sixth comb 360 disposed on one side of the fifth clamp 320. The fifth comb 350 and the sixth comb 360 cooperate to guide and limit multiple welding strips in the welding strip group 1 at both ends. The fifth comb 350 and the sixth comb 360 are configured to move relative to each other to apply axial tension to the welding strips clamped by the fourth clamp 310 and the fifth clamp 320.

[0081] For details, please refer to Figure 3 and Figure 6 In the illustrated embodiment, the conveying device 300 is suspended above the laying device 200. The fourth clamp 310 includes a plurality of grippers arranged along the second horizontal direction, and the fifth clamp 320 also includes a plurality of grippers arranged along the second horizontal direction. The grippers in the fourth clamp 310 and the fifth clamp 320 correspond one-to-one. A corresponding pair of grippers is used to be spaced apart along the first horizontal direction and to cooperate in clamping a welding strip group 1.

[0082] Continue to refer to Figure 3 and Figure 6 The translation drive mechanism 330 (which can be a pneumatic cylinder, electric cylinder, etc.) is used to drive the fourth clamp 310 and the fifth clamp 320 to reciprocate between the paving device 200 and the stacking station to complete the cross-station transfer of the welding strip group 1; the lifting drive mechanism 340 (which can be a pneumatic cylinder, electric cylinder, etc.) is used to drive the fourth clamp 310 and the fifth clamp 320 to move up and down in the vertical direction to realize the gripping, lifting and precise placement of the welding strip group 1.

[0083] Figure 3 and Figure 6 In the embodiment shown, the conveying device 300 includes two sets of translation drive mechanisms 330 and two sets of lifting drive mechanisms 340. The fourth clamp 310 and the fifth clamp 320 are respectively equipped with a set of translation drive mechanisms 330 and a set of lifting drive mechanisms 340, so as to perform lifting and translation operations respectively.

[0084] In other embodiments, only one set of translation drive mechanism 330 and one set of lifting drive mechanism 340 may be provided, and the fourth clamp 310 and the fifth clamp 320 may be provided on the same set of drives and may only perform lifting and translation operations synchronously.

[0085] It should be noted that the fourth clamp 310 and the fifth clamp 320 can clamp the fixing unit 2 in a certain order, but the three actions of the conveying device 300—lifting the welding strip group 1, transferring the welding strip group 1, and lowering the welding strip group 1—must be performed simultaneously to avoid damage to the welding strip due to asynchronous actions.

[0086] Continue to refer to Figure 3 and Figure 6 The fifth comb 350 is positioned adjacent to the fourth clamp 310, and the sixth comb 360 is positioned adjacent to the fifth clamp 320. Both combs guide and limit the multiple weld strips at both ends of the weld strip assembly 1 to maintain the spacing and regularity of the weld strips. Furthermore, the fifth comb 350 and the sixth comb 360 can move relative to each other (an additional actuator is configured to drive the fifth comb 350 and / or the sixth comb 360 to move along a first horizontal direction) to apply axial tension to the weld strips held by the clamps, thereby eliminating weld strip slack.

[0087] In one specific embodiment, refer to Figure 1 The laying device 200 has a feeding station, which is far away from the ribbon preparation device 100 (thus, the traction mechanism 130 and the conveying device 300 arranged in the air do not interfere with each other); after the ribbon group 1 is arranged, the translation and positioning drive 230 drives the mounting plate and all the positioning mechanisms to the feeding station, with the fourth clamp 310 and the fifth clamp 320 located directly above the feeding station; the lifting drive mechanism 340 drives the fourth clamp 310, the fifth clamp 320, the fifth comb 350 and the sixth comb 360 downward, with the fifth comb 350 and the sixth comb 360 respectively adjacent to the third comb 240. The fourth comb 250, relying on the alignment and insertion between the combs, accurately inserts the strips between them to complete the guiding and limiting. Then, the fourth clamp 310 and the fifth clamp 320 clamp all the fixing units 2 of the strip groups 1. The lifting drive mechanism 340 lifts the strip group 1, and the translation drive mechanism 330 smoothly moves it to the top of the battery cell 3 at the stacking station. During this process, the fifth comb 350 and the sixth comb 360 move relative to each other and apply axial tension to the strips. Then, the lifting drive mechanism 340 drives the clamps to descend, so that all the strips are aligned with the grid lines on the battery cell 3, completing the placement of the strip groups.

[0088] The handling device 300 provided in this application can realize the overall synchronous handling of multiple welding strip groups 1. The clamp and toothed comb cooperate to avoid the welding strip from shifting or scattering during handling. The movement of the toothed comb can axially tension the welding strip and ensure that the welding strip is laid flat. The translation and lifting drive mechanism cooperate to achieve high-precision transfer and alignment. Ultimately, it effectively solves the technical problems of low handling efficiency, poor alignment accuracy and easy loosening of high-density fine welding strips in tandem modules, greatly improves the efficiency and quality of tandem module laying, and meets the requirements of large-scale mass production of photovoltaic tandem modules.

[0089] In one embodiment, the manufacturing equipment includes two sets of welding strip preparation devices 100, which are arranged opposite to each other, with a flattening device 200 disposed between them. The two sets of welding strip preparation devices 100 cooperate to prepare two welding strip sets 1 simultaneously. The traction mechanisms 130 of the two sets of welding strip preparation devices 100 have opposite traction directions, with one set of traction mechanisms 130 used to pull the strip from right to left and the other set of traction mechanisms 130 used to pull the strip from left to right. The flattening device 200 includes multiple receiving stations and is equipped with a translation and positioning drive 230. When the two sets of welding strip preparation devices 100 are working, they can simultaneously pull welding strips to two receiving stations. After the preparation of one welding strip set 1 is completed, the translation and positioning drive 230 is activated to switch a new, vacant receiving station to dock with the two sets of welding strip preparation devices 100.

[0090] For details, please refer to Figure 3 , Figure 5 and Figure 6 In the illustrated embodiment, two sets of ribbon preparation devices 100 are arranged opposite each other along a first horizontal direction. A spreading device 200 is located between the two sets of ribbon preparation devices 100. A second clamp 210 is located adjacent to the ribbon preparation device 100 on the right, and a third clamp 220 is located adjacent to the ribbon preparation device 100 on the left. The two sets of ribbon preparation devices 100 share the same spreading device 200 and the same conveying device 300.

[0091] During the preparation of the welding strip group 1, the two sets of traction mechanisms 130 have opposite traction directions, respectively performing the pulling action from right to left and from left to right. In this way, two welding strip groups 1 can be prepared at the same time, and the two groups of welding strips can be accurately arranged in different receiving positions of the same laying device 200 without the two pulling actions interfering with each other.

[0092] Continue taking pictures Figure 3 , Figure 5 and Figure 6 The multiple receiving stations of the paving device 200 are arranged along the second horizontal direction. The translation and displacement drive 230 can drive the positioning mechanism and the receiving stations to move together along the second horizontal direction. The transport device 300 is located above the paving device 200. After the paving device 200 completes the arrangement of all the welding strip groups 1, the transport device 300 performs the overall transport operation, eliminating the need to configure paving and transport equipment separately for the two sets of preparation devices.

[0093] In one specific embodiment, the two sets of welding strip preparation devices 100 start working simultaneously, pulling welding strips to two adjacent receiving stations in the laying device 200 at the same time, completing the preparation and receiving of two welding strip groups 1 in one go; after completing the preparation of a single double group, the translation and repositioning drive 230 drives the receiving station to translate and reposition, switching the two new empty receiving stations to dock with the two sets of welding strip preparation devices 100; this cycle continues until all welding strip groups are arranged.

[0094] In other embodiments, the welding strip can also be pulled to non-adjacent receiving stations, as long as care is taken to ensure that it is aligned with two other new, vacant receiving stations each time it is moved and repositioned.

[0095] Setting up two sets of ribbon preparation devices 100 can double the preparation efficiency of ribbon group 1. Furthermore, the two sets of ribbon preparation devices 100 share the tiling device 200 and the handling device 300, without requiring additional equipment space or hardware investment. Bidirectional parallel preparation, coupled with rapid station rotation, can effectively shorten the ribbon processing cycle of stacked modules, breaking through mass production cycle limitations. Simultaneously, it ensures the accuracy and consistency of ribbon preparation and arrangement, improving production efficiency while also considering the economy and practicality of equipment layout.

[0096] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for manufacturing a photovoltaic shingled module, characterized in that, Includes the following steps: Prepare a welding strip group (1) composed of multiple welding strips, wherein the welding strips at both ends of the welding strip group (1) are fixed into a single strand to form a fixed unit (2) that is easy to grasp. Prepare N sets of the solder ribbons (1) and arrange the N sets of the solder ribbons (1) so that the arrangement of the solder ribbons matches the grid line distribution pattern on the target cell (3), where N is a natural number greater than 1; The N sets of welding ribbons (1) arranged in a row are transported and placed on the battery cell (3) in a synchronous manner, and the welding ribbons therein correspond one-to-one with the grid lines on the battery cell (3) and are aligned vertically. Cut off the fixing unit (2) and keep only the multiple parallel and independent solder strips aligned with the gate line so as to form a circuit.

2. The method for manufacturing a photovoltaic stacked-bus module according to claim 1, characterized in that, The preparation of the solder strip assembly (1) includes the following steps: Multiple parallel welding strips are pulled out simultaneously by the traction mechanism (130); After being pulled to the required length, the multiple welding strips are fixed together at the point where they need to be cut using a fixing mechanism (110). The welding strip is cut at a fixed position by the cutting mechanism (120) to simultaneously obtain the tail fixed section of the current welding strip group (1) that has been cut off, and the head fixed section of the next welding strip group (1) to be cut off.

3. The method for manufacturing a photovoltaic stacked-bus module according to claim 1 or 2, characterized in that, The fixed unit (2) is formed by connecting multiple welding strips through welding, bonding or hinge, and is a rigid unit that is easy to transport as a whole.

4. The method for manufacturing a photovoltaic stacked-bus module according to claim 1 or 2, characterized in that, Throughout the entire process of preparing, arranging and transporting the welding strip group (1), the welding strip is guided and limited by a toothed comb.

5. The method for manufacturing a photovoltaic stacked-bus module according to claim 4, characterized in that, During the process of the traction mechanism (130) pulling the welding strip or the handling mechanism (300) transferring the welding strip group (1), before the welding strip enters the downstream equipment, the tooth comb of the downstream equipment is first aligned and inserted with the tooth comb of the current equipment. After the tooth comb of the downstream equipment is inserted between multiple welding strips, the clamping or releasing action of the welding strip is performed.

6. A photovoltaic stacked-bus module manufacturing equipment, used to implement the photovoltaic stacked-bus module manufacturing method according to any one of claims 1-5, characterized in that, include: A welding strip preparation device (100) is used to continuously prepare welding strips (1), wherein the welding strips (1) are composed of multiple welding strips arranged at intervals along a second horizontal direction, and fixed units (2) are formed at the head and tail ends of the welding strips (1). A tiling device (200) is used to pick up the ribbon group (1) so that the ribbon group (1) is arranged in a shape that matches the grid line distribution pattern on the target cell (3); A transport device (300) is used to synchronously transport and place multiple welding strip groups arranged on the laying device (200) onto the battery cell (3); The positioning device includes multiple sets of toothed combs. At least one set of the toothed combs is provided in the welding strip preparation device (100), the laying device (200), and the conveying device (300). The toothed combs are provided with multiple slots for guiding and limiting multiple welding strips that are input in parallel, so as to constrain the relative positions of the multiple welding strips.

7. The photovoltaic tandem busbar module manufacturing equipment according to claim 6, characterized in that, The ribbon assembly preparation device (100) includes: A fixing mechanism (110) is used to gather and fix multiple parallel input solder strips together to form the fixing unit (2). A cutting mechanism (120) is provided on one side of the fixing mechanism (110) to cut off the fixing part formed by the fixing mechanism (110) so as to simultaneously obtain the tail fixing section of the current welding strip group (1) and the head fixing section of the next welding strip group (1). A traction mechanism (130) is used to grip the head fixing segment and pull the welding strip out from the fixing mechanism (110) and the cutting mechanism (120); The first comb (140) is located upstream of the fixing mechanism (110) and the cutting mechanism (120) and is used to guide and limit the multiple welding strips that are input in parallel. The traction mechanism (130) includes: The first clamp (131) is used to clamp the head fixing segment; The lifting drive (132) is used to drive the first clamp (131) to perform lifting movements so that the head fixing section is raised to avoid interference from the downstream component; Translation drive (133) is used to drive the first clamp (131) to move along a first horizontal direction away from the fixing mechanism (110) and the cutting mechanism (120) to pull out the required length of welding strip; The second comb (134), located near the first clamp (131), is used to maintain the positional order of multiple welding strips at the head position of the welding strip group (1) during traction.

8. The photovoltaic tandem module manufacturing equipment according to claim 7, characterized in that, The tiling device (200) includes multiple receiving stations, and each receiving station is provided with a set of positioning mechanisms. The positioning mechanisms include a second clamp (210) and a third clamp (220) spaced apart along a first horizontal direction. Each of the receiving stations can receive one of the welding strip groups (1), and the plurality of receiving stations are distributed at intervals along the second horizontal direction; Along the first horizontal direction, the paving device (200) is located downstream of the fixing mechanism (110) and the cutting mechanism (120), and the traction mechanism (130) is capable of pulling the welding strip directly from the fixing mechanism (110) and the cutting mechanism (120) into the paving device (200); The tiling device (200) further includes a translation and positioning drive (230), which is used to drive the positioning mechanism to move horizontally so as to realize the rotation of multiple receiving stations; The tiling device (200) further includes: The third comb (240) is located on one side of the second clamp (210); The fourth comb (250) is located on one side of the third clamp (220); The third comb (240) and the fourth comb (250) work together to guide and limit multiple welding strips in the welding strip group (1) at both ends.

9. The photovoltaic stacked-bus module manufacturing equipment according to claim 6, characterized in that, The conveying device (300) includes: The fourth clamp (310) and the fifth clamp (320) are used to clamp the two ends of the welding strip assembly (1); Translation drive mechanism (330) is used to drive the fourth clamp (310) and the fifth clamp (320) back and forth between the tiling device (200) and the stacking station; A lifting drive mechanism (340) is used to drive the fourth clamp (310) and the fifth clamp (320) to move in the vertical direction; The fifth comb (350) is located on one side of the fourth clamp (310); The sixth comb (360) is located on one side of the fifth clamp (320). The fifth comb (350) and the sixth comb (360) cooperate to guide and limit multiple welding strips in the welding strip group (1) at both ends. The fifth comb (350) and the sixth comb (360) are configured to move relative to each other to apply axial tension to the welding strip held by the fourth clamp (310) and the fifth clamp (320).

10. The photovoltaic tandem grid module manufacturing equipment according to any one of claims 6-9, characterized in that, The manufacturing equipment includes two sets of the welding strip preparation devices (100), which are arranged opposite to each other, and the laying device (200) is located between them; The two sets of the aforementioned ribbon preparation apparatus (100) work together to prepare two ribbon groups (1) simultaneously. The traction directions of the traction mechanisms (130) of the two sets of the welding strip preparation device (100) are opposite, one set of the traction mechanisms (130) is used to pull the strip from right to left, and the other set of the traction mechanisms (130) is used to pull the strip from left to right; The tiling device (200) includes multiple receiving stations and is equipped with a translation and transfer drive (230). When both sets of the aforementioned welding strip preparation devices (100) are in operation, they can simultaneously pull and feed welding strips to the two aforementioned receiving stations; After the preparation of one strip assembly (1) is completed, the translation and repositioning drive (230) is activated to switch the new, vacant receiving station to dock with the two sets of strip assembly preparation devices (100).

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