A BC battery string welding machine

Abstract

The present invention relates to a battery preparation device, and more specifically, to a BC battery string welding machine. This machine is designed to address the shortcomings of existing BC battery string welding technology, which employs a whole-string welding method that is convenient to operate but lacks compatibility with varying battery string lengths. Furthermore, the separate pulling and direct placement of odd and even welding ribbons lacks precision, leading to limited production capacity. The BC battery string welding machine includes a battery feeding unit, a battery printing unit, a string making unit, a ribbon unwinding unit, a ribbon making unit, and a ribbon transport unit. Through the seamless linkage of these functional components, it achieves fully automated production from battery cell feeding to welding and curing, significantly improving production efficiency. Furthermore, the machine is compatible with a variety of ribbon specifications and battery strings of varying lengths, meeting diverse process requirements.

Description

Technical Field

[0001] The present invention relates to a battery preparation device, in particular to a BC battery string welding machine. Background Art

[0002] In recent years, the photovoltaic industry has experienced rapid cell technology development, evolving from initial BSF (Back Surface Field) cells and PERC (Passivated Emitter and Rear Cell) technologies to TOPCon (Tunnel Oxide Passivated Contact) cells, HJT (Heterojunction with Intrinsic Thin-layer) cells, and BC (Back Contact) cells. The continuous evolution of these new cell technologies primarily focuses on improving photovoltaic conversion efficiency and reducing production costs. BC cells, due to their unique design, have become a focal point in the industry. These cells feature electrodes arranged entirely on the backside of the cell, forming a cross-knuckle structure that effectively reduces front-side shading and improves photovoltaic conversion efficiency. BC cells can also be combined with TOPCon technology to form TBC (TOPCon Back Contact) cells, or with HJT technology to form HBC (Heterojunction Back Contact) cells, further enhancing performance and demonstrating their broad potential as a platform technology.

[0003] However, the unique structural design of BC cells also poses challenges to string welding technology. Since all welding operations must be performed on the back side, traditional welding processes are difficult to fully adapt, which may cause warping of the battery cells after welding or uneven welding. In addition, during the string welding process, different process routes have different requirements for the placement of welding ribbons and equipment performance. For example, some technologies use circular welding ribbons to transport and weld the entire string, but are limited by the equipment's inability to accommodate changes in battery string length; others use odd and even welding ribbons that are pulled separately and placed directly on the battery cells, but their accuracy is low and production capacity is limited. These shortcomings of existing processes have become bottlenecks for the further development of BC battery string welding technology.

[0004] Therefore, how to achieve high-precision and high-efficiency welding in the BC battery string welding process and effectively control the warping of the battery cells has become an important technical problem that needs to be solved urgently in the field of photovoltaic cell manufacturing. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the existing BC battery string welding technology, which uses a whole-string round welding ribbon transport and welding method that is easy to operate, but has low compatibility with changes in battery string length, and the accuracy of the separate pulling and direct placement of odd and even welding ribbons is low, and the production capacity is limited. A BC battery string welding machine is provided.

[0006] In order to solve the deficiencies of the above-mentioned prior art, the present invention provides the following technical solutions:

[0007] A BC battery stringer, including a frame, is special in that:

[0008] The frame is provided with a battery feeding part, a battery printing part, a string making part, and a tape unwinding part, a tape making part, and a tape transport part.

[0009] The battery feeding section includes a battery feeding and conveying unit, a first PL (Photoluminescence) detection unit, and a feeding and positioning unit, which are sequentially arranged above the battery feeding and conveying unit along the X1 axis. The first PL detection unit is used to detect whether there are defects in the battery cells. The feeding and positioning unit is used to correct the battery cells. The feeding and conveying unit is used to transfer the corrected and defect-free battery cells to the battery printing section. The positive direction of the X1 axis is the battery cell transmission direction.

[0010] The battery printing unit includes a printing positioning unit, a printing unit, and a second PL detection unit arranged in sequence along the X1 axis; the printing positioning unit is used to correct the battery cell, the printing unit prints UV glue on the corrected battery cell, and the second PL detection unit is used to detect whether the printed battery cell has defects;

[0011] The stringing section includes a string loading unit, a stringing positioning unit, and a stringing transmission unit sequentially arranged along the X1 axis; the string loading unit is used to grab the battery cells detected as defect-free by the second PL detection unit to the stringing positioning unit for correction, and grab the battery cells corrected by the stringing positioning unit to the stringing transmission unit;

[0012] The tape unwinding unit is used to provide the welding tape to the tape making unit;

[0013] The strip making unit is used to make welding strip segments of a preset length and to lay out the welding strip segments to obtain a welding strip group;

[0014] The ribbon transport unit is used to place the ribbon assembly on the battery cell of the serial transmission unit;

[0015] The serial transmission unit is provided with a UV curing unit for irradiating the battery sheets and the soldering ribbon group with UV light to form a battery string.

[0016] Furthermore, the battery feeding part further includes a feeding translation unit;

[0017] The battery feed transmission unit includes a first feed transmission unit and a second feed transmission unit;

[0018] The first PL detection unit and the feed positioning unit are sequentially arranged above the first feed transmission unit along the X1 axis; the feed positioning unit is used to correct the edge of the battery cell in the Y1 axis direction; the feed translation unit is used to transport the corrected and defect-free battery cells to the second feed transmission unit; the Y1 axis conforms to a left-hand rectangular coordinate system in which the positive direction of the X1 axis is the battery cell transmission direction and the positive direction of the Z1 axis is vertically upward;

[0019] The battery printing unit also includes a printing feed transmission unit, a printing table and a printing discharge transmission unit sequentially arranged along the X1 axis direction, a printing visual inspection unit located above the printing positioning unit, and a printing loading unit located above the printing table;

[0020] The printing positioning unit is located between the printing feed transmission unit and the printing table, and the printing unit and the second PL detection unit are located above the printing table and the printing discharge transmission unit respectively;

[0021] The printing feed transmission unit is connected to the second feed transmission unit at its head end and to the printing positioning unit at its tail end; the printing positioning unit is used to correct the edge of the battery cell in the Y1-axis direction, and the printing visual inspection unit is used to capture the appearance contour image of the corrected battery cell; the printing loading unit is used to grab the battery cell from the printing positioning unit to the printing table, and from the printing table to the printing discharge transmission unit; the top surface of the printing table is provided with an adsorption device for adsorbing the battery cell;

[0022] The stringing section further comprises a stringing visual inspection unit located above the stringing positioning unit; the stringing visual inspection unit is used to capture an appearance contour image of the battery cell aligned by the stringing positioning unit.

[0023] Furthermore, the second feeding and transporting unit includes A1 battery cell feeding tracks, each battery cell feeding track transports two battery cells at a time; A1≥1;

[0024] The battery feeding section further includes a feed buffer unit located at the tail end of the second feed transmission unit and an end material box located at the tail end of the first feed transmission unit; the feed buffer unit includes A1 buffer assemblies corresponding to A1 battery cell feeding tracks respectively; each buffer assembly includes two buffer devices, respectively for buffering the previous battery cell and the next battery cell; the end material box is used to store defective battery cells;

[0025] The printing feed transmission unit includes A1 printing feed tracks respectively connected to A1 battery cell feed tracks, and each printing feed track is equipped with a heating tube for drying the solder paste on the battery cell;

[0026] The printing table is arranged on the frame through a table drive device, and the printing table has a material receiving position, a printing position and a material discharge position; the table drive device includes a second horizontal drive device that moves along the X1 axis, and a second vertical drive device that is arranged at the driving end of the second horizontal drive device and moves along the Z1 axis, and the printing table is connected to the driving end of the second vertical drive device; the second horizontal drive device is used to transport the printing table to the material receiving position or the material discharge position; the second vertical drive device is used to transport the printing table to the printing position;

[0027] The printing loading unit includes A1 loading assemblies corresponding to A1 printing material tracks respectively, and each loading assembly is used to grab the corrected previous battery cell and the next battery cell from the printing positioning unit to the printing table located at the receiving position; each loading assembly includes a first horizontal driving device that moves along the X1 axis, and a first vertical driving device that is arranged at the driving end of the first horizontal driving device and moves along the Z1 axis;

[0028] The printing unit is used to print UV glue on the solar cell on the printing table located at the printing position, and includes a third horizontal drive device that moves along the X1 axis, a third vertical drive device that is arranged at the driving end of the third horizontal drive device and moves along the Z1 axis, and a printing scraper arranged at the driving end of the third vertical drive device; the third horizontal drive device is used to move the printing scraper in the X1 axis direction to print the UV glue; the third vertical drive device is used to move the printing scraper in the Z1 axis direction to control the height of the printing scraper;

[0029] The printing material discharging transmission unit is connected to the printing table at the discharging position;

[0030] The serial feeding unit includes A1 string-making horizontal drive devices that move along the X1 axis and correspond to A1 printing discharge tracks respectively. The driving end of each string-making horizontal drive device is sequentially provided with a first mover mechanism and a second mover mechanism along the X1 axis direction. The first mover mechanism is used to transport the battery cells on the corresponding printing discharge track to the string-making positioning unit, and the second mover mechanism is used to transport the battery cells on the string-making positioning unit to the corresponding serial transmission track of the serial transmission unit. The first mover mechanism and the second mover mechanism are both provided with two Z1-axis motion cylinders corresponding to the previous battery cell and the next battery cell respectively.

[0031] The first moving mechanism is also provided with a battery cell rotating mechanism for rotating the battery cell according to the appearance contour image taken by the stringing visual inspection unit;

[0032] The serial transmission unit is used to transmit A1 battery strings simultaneously, and includes A1 serial transmission tracks corresponding to A1 string-making horizontal driving devices respectively.

[0033] Furthermore, the unwinding unit includes a switching unit and a plurality of unwinding units sequentially arranged in a vertical direction;

[0034] The switching unit is used to switch between different unwinding units, and includes a fixed plate, a switching cylinder arranged on the fixed plate, and a vertical guide rail; a connecting plate is provided on the vertical guide rail, and the connecting plate is connected to the driving end of the switching cylinder;

[0035] Each of the unwinding units comprises a tape supply unit, a tape winding unit, a tape storage unit and a wire clamping unit arranged in sequence along the welding tape path; the wire clamping units of the multiple unwinding units are arranged in sequence on the connecting plate in the vertical direction;

[0036] The tape supply unit is used to provide the welding tape, and comprises a tape supply base plate, a plurality of rotating shafts vertically arranged on the tape supply base plate, and a plurality of independently rotating welding tape pay-off disks are sleeved on each rotating shaft;

[0037] The tape winding unit is used to change the direction of the welding tape, and includes a tape winding base plate, a plurality of second tape winding shafts vertically arranged on the tape winding base plate and parallel to the rotation axis, and a plurality of rollers are sleeved on each second tape winding shaft;

[0038] The tape storage unit is used to control the tension of each welding tape on each welding tape pay-off reel, and includes a plurality of guide rail shafts parallel to the rotation axis, and a plurality of parallel circumferential rings are provided on the side wall of each guide rail shaft as guide rails, and each guide rail corresponds to a welding tape;

[0039] The wire clamping unit includes a plurality of wire pressing base plates and a plurality of positioning pins; each wire pressing base plate is horizontally arranged on the connecting plate, and a wire passing trough plate, a wire pressing block unit, and a wire pressing cover plate are sequentially provided on its upper surface along the length direction of the welding ribbon; a plurality of wire grooves are provided on the wire passing trough plate perpendicular to the length direction of the welding ribbon, and each wire groove is used to pass a welding ribbon; the wire pressing block unit includes a plurality of wire pressing blocks corresponding to the plurality of wire grooves; the wire pressing cover plate is used to press the welding ribbon on the top surface of the wire pressing base plate; the plurality of positioning pins are used to fix the corresponding wire pressing base plate on the work station after manual wire pressing is completed;

[0040] At least one wire passing wheel group is arranged between the tape winding unit and the tape storage unit, and multiple wire passing wheel groups are arranged between the tape storage unit and the wire clamping unit. Each of the wire passing wheel groups includes multiple wire passing wheels parallel to the rotating axis, and the multiple wire passing wheels are coaxial and arranged in sequence along the axis.

[0041] Furthermore, each of the rotating shafts includes a plurality of unwinding shafts which are sequentially sleeved from the inside to the outside and whose lengths decrease, the first welding tape unwinding drum is sleeved on the portion of the first unwinding shaft extending from the second unwinding shaft, and the rest of the welding tape unwinding drums are similar in sequence; two adjacent unwinding shafts are connected by a rotating bearing;

[0042] The width of each of the wire grooves is 0 to 3 mm greater than the width of the welding strip;

[0043] A pressing block adapted to the wire groove is provided on the side of each pressing block close to the wire groove. The top surface of the pressing block is an inclined surface. The pressing block passes through the guide groove. The pressing block and the pressing block are used to press the welding strip onto the top surface of the pressing bottom plate.

[0044] Furthermore, the strip making unit includes a straightening and pressing mechanism, a positioning and cutting mechanism, a strip pressing mechanism, a double-row traction mechanism, and a strip supporting and spacing mechanism, which are sequentially arranged along the strip transmission direction;

[0045] The straightening and pressing mechanism is used to straighten and press the welding ribbon, and it includes a straightening and pressing frame, two welding ribbon pressing assemblies arranged in sequence on the straightening and pressing frame along the X2-axis direction, a line comb and an overall welding ribbon pressing assembly; the positive direction of the X2-axis is the welding ribbon transmission direction; the two welding ribbon pressing assemblies are respectively used to press welding ribbons with odd and even numbers; the line comb is used to guide the welding ribbon to pass through and ensure that the welding ribbons are arranged neatly; the overall welding ribbon pressing assembly is used to press all welding ribbons; the positioning and cutting mechanism is used to position the welding ribbon and cut it according to length, and it includes a positioning and cutting frame that moves along the X2-axis direction, and the positioning and cutting frame is provided with a plurality of cutter assemblies arranged in the Y2-axis direction and a plurality of positioning comb assemblies arranged in the Y2-axis direction; each cutter assembly and its corresponding positioning comb assembly are arranged in sequence along the X2-axis direction, the cutter assembly is used to cut the welding ribbon, and the positioning comb assembly is used to correct the cut welding ribbon; the plurality of cutter assemblies and the positioning comb assemblies are respectively used to cut and position the welding ribbon;

[0046] The solder ribbon pressing mechanism is used to press the solder ribbon in a specified position, which includes a plurality of pressure pin units arranged in sequence along the X2 axis, each pressure pin unit includes a plurality of pressure pins arranged in sequence along the Y2 axis, and each pressure pin corresponds to one solder ribbon;

[0047] The double-row traction mechanism is used to clamp and pull the welding ribbon, move it according to a preset length, and provide the welding ribbon segment required for subsequent processing. It includes multiple clamping assemblies arranged in sequence along the Y2 axis and moving along the X2 axis; each clamping assembly includes a lower clamping jaw and two clamping units; the two clamping units are stacked up and down, and the multiple clamping jaws are staggered with each other, respectively used to cooperate with the lower clamping jaw to clamp the welding ribbons with odd and even numbers;

[0048] The support strip spacing mechanism is used to separate and arrange the welding strips in odd and even sequences and position them, providing a preset welding strip layout for subsequent welding. It includes multiple adsorption components arranged in sequence along the Y2 axis and moving along the X2 axis; each adsorption component includes two adsorption units arranged in sequence along the X2 axis, and each adsorption component is used to move along the X2 axis below the clamping component; the two adsorption units of each adsorption component are used to adsorb welding strips with odd and even numbers respectively.

[0049] Furthermore, a pressing base plate is provided on the straightening and pressing frame on the X2Y2 plane;

[0050] Each of the solder ribbon clamping assemblies includes a first clamping block that moves along the Z2 axis; the length direction of the first clamping block is parallel to the Y2 axis, and a plurality of clamping grooves are sequentially provided on the bottom surface along the Y2 axis, and a silicone pad corresponding to the bottom surface of the first clamping block is provided on the clamping bottom plate; the plurality of clamping grooves of the two solder ribbon clamping assemblies are staggered with each other, and are respectively used to clamp the solder ribbons with odd and even numbers;

[0051] The overall welding ribbon clamping assembly includes A1 floating pressure block assemblies arranged in sequence along the Y2-axis direction above the clamping base plate; each of the floating pressure block assemblies includes a floating plate that moves along the Z2-axis direction, and a positioning slot assembly; a plurality of second clamping guide rods are provided in the middle of the floating plate, and a compression spring is connected to the bottom of each second clamping guide rod, and at least one floating pressure block is provided under each compression spring, and each floating pressure block is used to clamp a welding ribbon; the floating plate and the positioning slot assembly are arranged in sequence along the X2-axis direction, and the positioning slot assembly is used to position the welding ribbon, which includes a plurality of positioning slots arranged in sequence along the Y2-axis on the clamping base plate, and a cover plate located above the plurality of positioning slots; each positioning slot corresponds to a welding ribbon, and the cover plate limits the position deviation of the welding ribbon by covering the positioning slot;

[0052] Each of the cutter assemblies includes two cutter units symmetrically arranged in an upper and lower direction; each of the cutter units includes a cutter that moves along the Y2 axis, and the two cutters cooperate with each other to cut the welding strip between them;

[0053] Each of the positioning comb assemblies includes two positioning comb units corresponding to the two cutter units, each positioning comb unit includes a positioning plate that moves along the Y2 axis direction, and a plurality of positioning steel needles are provided on the bottom surface of the positioning plate. The plurality of positioning steel needles of the two positioning comb units are staggered with each other, and the gaps between adjacent positioning steel needles are used to pass through the welding strip to straighten the welding strip;

[0054] The solder strip pressing mechanism also includes a double-row pressure needle assembly and a single-row pressure needle assembly sequentially arranged along the X2 axis direction. Both the single-row pressure needle assembly and the double-row pressure needle assembly include a pressure needle mounting plate that moves along the Z2 axis. The double-row pressure needle assembly is used to simultaneously press multiple solder strips, and two pressure needle units are arranged on the bottom surface of its pressure needle mounting plate. The single-row pressure needle assembly is used to assist the double-row pressure needle assembly in pressing multiple solder strips, and one pressure needle unit is arranged on the bottom surface of its pressure needle mounting plate. Each pressure needle is fixed to the corresponding pressure needle mounting plate by a threaded connection.

[0055] Each of the clamping units includes a mounting plate and a linked cylinder, wherein the linked cylinder is arranged on the mounting plate and connected to the plurality of clamping jaws through a plurality of piston rods, and the plurality of clamping jaws are arranged in sequence along the Y2 axis; the lower clamping jaw is arranged on the mounting plate of the lower clamping unit;

[0056] Each of the adsorption units includes multiple adsorption strips and multiple positioning bosses, each adsorption strip corresponds to a welding strip, and each adsorption strip top surface is provided with multiple adsorption holes, and every two positioning bosses are symmetrically arranged on both sides of an adsorption hole to assist in positioning the welding strips; the adsorption strips of the two adsorption units are staggered with each other, and are respectively used to adsorb welding strips with odd and even numbers.

[0057] Furthermore, the conveyor belt portion includes a fixed bracket and A1 conveying units;

[0058] The fixed bracket is provided with a moving device that moves in a horizontal direction, and the moving device is provided with the A1 transport units;

[0059] Each of the transport 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, and an adsorption plate is provided on the top surface of the pressure needle connecting plate; the lifting device is used to drive the adsorption plate to move in the vertical direction;

[0060] The multiple spring pressure pins are used to press the soldering ribbon onto the battery sheet so that it is in close contact with the UV glue;

[0061] The bottom surface of the adsorption plate is provided with M groups of adsorption holes in sequence along the length direction of the solder strip; 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, and the number of rows of each group of adsorption holes is greater than or equal to 3; each two consecutive groups of adsorption holes are used to adsorb the same long solder strip on two adjacent solar cells;

[0062] 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 pin connecting plate to adsorb the corresponding solder strip.

[0063] Furthermore, the value of M is 4;

[0064] 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;

[0065] 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 battery cells among the three battery cells 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 battery cells among the three battery cells arranged in sequence.

[0066] Furthermore, the conveyor belt is also used to use UV light to irradiate the UV glue on the battery cell to achieve UV pre-curing; a UV lamp board is provided on the bottom surface of the press pin connecting plate; the UV lamp board includes a substrate provided on the bottom surface of the press pin connecting plate, a plurality of UV lamp beads provided on the bottom surface of the substrate, and a light shielding component; the light shielding component includes a light shielding plate and a plurality of light shielding foams; the light shielding plate is located at the end of the substrate close to the adjacent transport unit to shield the UV glue on the adjacent battery cell; the plurality of light shielding foams are divided into a plurality of rows, and a UV lamp bead is provided between adjacent light shielding foams in each row to shield the UV lamp bead;

[0067] The plurality of spring pressure pins pass through the substrate and are arranged in a row-column matrix; the column direction of the plurality of spring pressure pins is parallel to the extending direction of the solder strip;

[0068] The welding ribbon pressing mechanism also includes a maintenance cylinder, the driving end of which is connected to the single-row pressure needle assembly and the double-row pressure needle assembly through a connecting plate, and is used to drive the single-row pressure needle assembly and the double-row pressure needle assembly to the upper position when the equipment is maintained.

[0069] Compared with the prior art, the present invention has the following beneficial effects:

[0070] (1) The present invention provides a BC battery string welding machine, which includes a battery feeding section, a battery printing section, a string making section, a tape unwinding section, a tape making section, and a tape transport section. Through seamless linkage of various functional components, fully automated production from battery cell feeding to welding and curing is achieved, greatly improving production efficiency. In addition, the present invention is compatible with a variety of welding tape specifications and battery strings of different lengths to meet diverse process requirements.

[0071] (2) The present invention achieves highly flexible production capacity through high coordination between modules. The battery feeding section supports docking with solder paste printing equipment, accurately straightens the battery cells after solder paste printing and transmits them to the string making section. The string making section flexibly adjusts the direction of the battery cells according to the specific requirements of the battery string using the string making visual inspection system and the battery cell rotation mechanism to ensure the compatibility of different battery cell arrangements; at the same time, the strip making section generates solder strips of different specifications and accurately transports them through the strip transport section, realizing the flexible application of multiple solder strips (long solder strips, short solder strips and inter-string solder strips); the above design enables the equipment to easily cope with the length changes and complex structural requirements of the battery string, solving the limitations of traditional equipment in flexible production.

[0072] (3) The present invention has high-precision control capabilities; the battery feeding part, stringing part and belt conveying part are all equipped with a visual inspection system, which can identify the slight offset of the battery cell and the welding ribbon, and realize the dynamic adjustment of the position of the battery cell and the welding ribbon to ensure the alignment accuracy of the welding; the pressing needle device provides uniform pressure through multiple spring pressing needles to ensure that the welding ribbon is completely fitted with the surface of the battery cell; in the welding ribbon clamping assembly, the clamping pressure can be adjusted to adapt to welding ribbons of different thicknesses and materials, thereby improving welding accuracy.

[0073] (4) The multi-module collaboration of the present invention greatly improves the overall production efficiency. The battery feeding section and the printing section realize the parallel transmission of multiple battery cells through a multi-track design, avoiding the production bottleneck caused by single-track transmission in traditional processes. At the same time, the seamless connection between the string making section, the belt transport section and the belt making section optimizes the rhythm of each step. During the welding tape laying process, the belt transport section uses multiple groups of adsorption holes to achieve rapid adsorption and precise placement of the welding tape, and the synchronous operation with the needle pressing device effectively saves the time for fixing the welding tape and the battery cell. While the belt making section is preparing the next batch of welding tapes, the belt transport section has already started a new round of welding tape laying operations. The multi-threaded operation of the entire system maximizes production efficiency.

[0074] (5) The present invention is adapted to the complex requirements of BC battery backside welding. The string making unit ensures that different types of battery strings can be arranged with high precision through visual inspection and dynamic adjustment, while the synergy between the strip making unit and the strip transport unit makes the generation, separation and laying of welding strips more efficient. The strip transport unit can separate and place odd-numbered and even-numbered welding strips according to their different requirements, ensuring that the position of the welding points is accurate. At the same time, the strip transport unit 600 pre-cures and optimizes the flatness of the welding strips, further improving the reliability of the complex welding structure.

[0075] (6) The present invention achieves energy conservation and environmental protection through the coordinated optimization of various modules. The UV lamp board of the belt conveyor adopts local curing technology, and accurately controls the scope of action of UV light through the shading plate and shading foam, thereby reducing energy waste. In the process of welding strip generation and processing, the belt making unit reduces material waste through efficient layout and optimized design. From battery cell feeding, welding strip generation to welding completion, each link of the present invention is based on close cooperation between modules, reducing unnecessary repeated actions and energy consumption.

[0076] (7) The present invention has high stability and easy maintainability. The battery feeding part, string making part and conveyor belt part achieve smooth operation through their own independent drive systems, avoiding interference between modules. At the same time, each module adopts a structured and standardized design, such as the spring pressure needle device and adsorption device of the conveyor belt part, which are not only reliable and durable, but also easy to maintain and replace. When the equipment needs to be adjusted or upgraded, the function can be expanded or optimized by replacing a single module without changing the entire set of equipment. In addition, the various functional components reduce potential errors in the operation process through precise collaboration, thereby further improving the stability and continuous production capacity of the overall system. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1 A schematic diagram of the structure of a BC battery string welding machine embodiment of the present invention Figure 1 ;

[0078] Figure 2 A schematic diagram of the structure of an embodiment of the present invention Figure 2 ;

[0079] Figure 3 This is a structural diagram of a battery feeding part in an embodiment of the present invention;

[0080] Figure 4 This is a schematic structural diagram of a battery printing unit in an embodiment of the present invention;

[0081] Figure 5 Schematic diagram of the structure of the printing unit in an embodiment of the present invention;

[0082] Figure 6 Schematic diagram of the structure of the string making part in the embodiment of the present invention;

[0083] Figure 7 This is a structural diagram of the serially connected feeding units in an embodiment of the present invention;

[0084] Figure 8 This is an axonometric diagram of a tape unwinding unit according to an embodiment of the present invention;

[0085] Figure 9 This is a structural schematic diagram of a first unwinding shaft and a second unwinding shaft of a unwinding unit in an embodiment of the present invention, on which a welding tape pay-off reel is sleeved;

[0086] Figure 10 This is a structural diagram of two tape storage units, seven wire-passing wheel assemblies, two wire-clamping units, and a switching unit in a tape-unwinding portion according to an embodiment of the present invention;

[0087] Figure 11 for Figure 9 Axonometric diagram of the tape storage unit and two wire-passing wheel assemblies at the bottom Figure 1 ;

[0088] Figure 12 for Figure 9 Axonometric diagram of the tape storage unit and two wire-passing wheel assemblies at the bottom Figure 2 ;

[0089] Figure 13 This is a schematic structural diagram of two wire-passing wheel assemblies, two wire-gripping units, and a switching unit in a tape-releasing portion according to an embodiment of the present invention;

[0090] Figure 14 Schematic diagram of the structure of the top surface of the wire pressing base plate of the tape unwinding part in an embodiment of the present invention;

[0091] Figure 15 A cross-sectional view of a wire pressing base plate, a wire passing trough plate, a wire pressing block unit, and a wire pressing cover plate of a tape unwinding unit in an embodiment of the present invention;

[0092] Figure 16 A front view of a belt making portion in an embodiment of the present invention;

[0093] Figure 17 A top view of a belt making portion in an embodiment of the present invention;

[0094] Figure 18 Schematic diagram of the axonometric view of the belt making part in the embodiment of the present invention;

[0095] Figure 19 Schematic diagram of the structure of the straightening and pressing mechanism of the belt making part in the embodiment of the present invention Figure 1 ;

[0096] Figure 20 Schematic diagram of the structure of the straightening and pressing mechanism of the belt making part in the embodiment of the present invention Figure 2 ;

[0097] Figure 21 Schematic diagram of the structure of the positioning and cutting mechanism of the belt making part in an embodiment of the present invention;

[0098] Figure 22 Schematic diagram of the structure of the welding strip pressing mechanism of the strip making part in an embodiment of the present invention;

[0099] Figure 23 Schematic diagram of the structure of the double-row traction mechanism of the belt making part in an embodiment of the present invention;

[0100] Figure 24 Schematic diagram of the structure of the clamping assembly of the belt making part in an embodiment of the present invention;

[0101] Figure 25 Schematic diagram of the structure of the belt-supporting and spacing mechanism of the belt-making part in an embodiment of the present invention;

[0102] Figure 26 Schematic diagram of the structure of each adsorption unit of the belt making part in an embodiment of the present invention;

[0103] Figure 27 Schematic diagram of the structure of a long welding strip between two battery cells made by a strip making unit in an embodiment of the present invention;

[0104] Figure 28 Schematic diagram of the structure of the short welding strips between strings produced by the strip making unit in an embodiment of the present invention.

[0105] Figure 29 Schematic diagram of the structure of the conveyor belt portion in an embodiment of the present invention;

[0106] Figure 30 This is a schematic structural diagram of the adsorption plate and UV lamp board of the conveyor belt portion in an embodiment of the present invention;

[0107] Figure 31 Schematic diagram of the structure of the needle pressing device and the lifting device of the belt conveyor in an embodiment of the present invention;

[0108] Figure 32 Schematic diagram of the distribution of long welding ribbons with a length L1 of the ribbon transport portion on two solar cell panels in an embodiment of the present invention;

[0109] Figure 33 1 is a diagram showing the corresponding relationship between the long welding strip of the strip transport portion having a length L1 and the four groups of adsorption holes in an embodiment of the present invention;

[0110] Figure 34 Schematic diagram of the distribution of short welding ribbons with a length L2 of the ribbon carrier portion on two solar cell panels in an embodiment of the present invention;

[0111] Figure 35 1 is a diagram showing the corresponding relationship between the short welding ribbon of the length L2 of the ribbon transport portion and the two groups of adsorption holes according to an embodiment of the present invention.

[0112] The following are the descriptions of the reference numerals:

[0113] 01- solder ribbon; 02- cell; 03- long solder ribbon; 04- short solder ribbon between strings;

[0114] 10- rack;

[0115] 100 - battery feeding part; 110 - first PL detection unit; 120 - feeding positioning unit; 130 - first feeding transmission unit; 140 - feeding translation unit; 150 - second feeding transmission unit; 160 - feeding buffer unit;

[0116] 200 - Battery printing unit; 210 - Printing feed transport unit; 220 - Printing positioning unit; 230 - Printing visual inspection unit; 240 - Printing loading unit; 250 - Printing table; 260 - Printing unit; 261 - Third horizontal drive device; 262 - Third vertical drive device; 263 - Printing scraper; 270 - Printing discharge transport unit; 280 - Second PL detection unit;

[0117] 300- stringing unit; 310- string loading unit; 311- first moving mechanism; 312- second moving mechanism; 313- cell rotation mechanism; 320- stringing positioning unit; 330- stringing transmission unit; 340- UV curing unit; 350- stringing visual inspection unit;

[0118] 400-tape unwinding unit; 410-unwinding unit; 420-tape supply unit; 421-tape supply base; 422-rotating shaft; 423-tape unwinding reel; 424-first tape winding shaft; 425-first unwinding shaft; 426-second unwinding shaft; 427-first cone sleeve; 428-second cone sleeve; 429-shaft end lock; 4220-baffle; 4221-rotating bearing; 430-tape winding unit; 431-tape winding base; 432-second tape winding shaft; 433-pass wheel; 44 0-tape storage unit; 441-base; 442-vertical plate; 443-guide rail unit; 444-limiting unit; 445-guide rail shaft; 446-support rod; 450-wire wheel assembly; 460-wire clamping unit; 461-wire pressing bottom plate; 462-wire passing trough plate; 463-wire pressing block; 464-locking nut; 465-wire pressing cover plate; 466-locating pin; 467-pressing block; 470-switching unit; 471-switching cylinder; 472-vertical guide rail; 473-connecting plate;

[0119] 5000-belt making unit; 5200-straightening and pressing mechanism; 5210-straightening and pressing frame; 5211-pressing base plate; 5220-welding strip pressing assembly; 5221-first pressing cylinder; 5222-first pressing guide rod; 5223-first pressing block; 5230-thread comb; 5240-integral welding strip pressing assembly; 5241-floating pressing block assembly; 5242-second pressing cylinder; 5243-floating plate; 5244-first vertical guide rail; 5245-second pressing guide rod; 5246- Compression spring; 5247- floating pressure block; 5248- cover plate; 5300- positioning cutting mechanism; 5310- positioning cutting bottom plate; 5320- positioning cutting motor; 5330- first horizontal guide rail; 5340- positioning cutting frame; 5350- cutter assembly; 5351- cutter unit; 5352- cutter cylinder; 5353- second vertical guide rail; 5354- cutter seat; 5355- cutter; 5361- positioning comb unit; 5362- positioning comb cylinder; 5363- positioning comb guide rail; 536 4- Positioning plate; 5365- Positioning steel needle; 5400- Welding strip pressing mechanism; 5401- Pressing needle motor; 5402- Lead screw; 5403- Third vertical guide rail; 5404- Pressing needle mounting plate; 5405- Pressing needle; 5410- Double-row pressing needle assembly; 5420- Single-row pressing needle assembly; 5430- Maintenance cylinder; 5500- Double-row traction mechanism; 5510- Traction assembly; 5511- Traction base plate; 5512- Traction motor; 5513- Traction guide rail; 5514- Clamping assembly; 5515 - lower clamping jaw; 5516 - clamping unit; 5517 - mounting plate; 5518 - piston rod; 5519 - clamping jaw; 55120 - linked cylinder; 5600 - belt spacing mechanism; 5610 - spacing base plate; 5620 - first spacing motor; 5630 - spacing assembly; 5631 - second spacing motor; 5632 - second horizontal guide rail; 5640 - adsorption assembly; 5641 - adsorption unit; 5642 - adsorption base; 5643 - adsorption strip; 5644 - adsorption hole; 5645 - positioning boss;

[0120] 600-Belt conveyor; 610-Fixed bracket; 620-Moving device; 621-Belt conveyor linear motor; 622-Belt conveyor mounting plate; 630-Vacuum generator; 6401-Adsorption plate; 6402-Suction cup; 6403-First group of adsorption holes; 6404-Second group of adsorption holes; 6405-Third group of adsorption holes; 6406-Fourth group of adsorption holes; 650-Pressing needle device; 6501-Pressing needle cylinder; 6502-Pressing needle cylinder Connecting plate; 6503-support plate; 6504-connecting shaft; 6505-presser connecting plate; 6506-spring presser; 660-lifting device; 6601-lifting motor; 6602-screw rod; 6603-lifting cylinder connecting plate; 6604-guide rail connecting plate; 6605-linear guide; 670-UV lamp board; 6701-base plate; 6702-UV lamp beads; 6703-shading plate; 6704-shading foam. DETAILED DESCRIPTION

[0121] The present invention will be further described below with reference to the accompanying drawings and exemplary embodiments.

[0122] Reference Figures 1 and 2 A BC battery stringer includes a frame 10, on which are provided a battery feeding part 100, a battery printing part 200, a stringing part 300, and a tape unwinding part 400, a tape making part 5000, and a tape transporting part 600, which are connected in sequence.

[0123] For ease of understanding, the transmission direction of the battery cell 02 is defined as the positive direction of the X1 axis, the vertical upward direction is the positive direction of the Z1 axis, and the Y1 axis conforms to the left-hand rectangular coordinate system.

[0124] Figure 3 Schematic diagram of the structure of the battery feeding part 100 in an embodiment of the present invention;

[0125] Reference Figure 3 The battery feeding section 100 includes a battery feeding transmission unit, a first PL detection unit 110, a feeding positioning unit 120, a feeding translation unit 140, and a feeding buffer unit 160. The battery feeding transmission unit includes a first feeding transmission unit 130 and a second feeding transmission unit 150 arranged in parallel on the bottom plate of the frame 10.

[0126] The first feed transmission unit 130 is used to connect to the solder paste printing equipment, and the first PL detection unit 110 and the feed positioning unit 120 are arranged in sequence above it along the X1 axis, and an end material box is arranged at the tail end.

[0127] The first PL detection unit 110 is used to detect whether the battery cell 02 has defects, including missing corners, hidden cracks, etc.; the end material box is used to store defective battery cells 02.

[0128] The feed positioning unit 120 is used to align the edge of the battery cell 02 in the Y1 axis direction.

[0129] The second feeding and transporting unit 150 includes A1 battery cell feeding tracks, each battery cell feeding track transports two battery cells O2 at a time; A1≥≥1; in this embodiment, the value of A1 is 2.

[0130] The feed translation unit 140 is used to transport the corrected and defect-free battery cells 02 from the first feed transfer unit 130 to the A1 battery cell feed tracks of the second feed transfer unit 150. The feed translation unit 140 transports four battery cells 02 at a time.

[0131] The feed buffer unit 160 includes A1 buffer components located at the rear end of the second feed transmission unit 150; each buffer component includes two buffer devices, which are used to buffer the previous battery cell 02 and the next battery cell 02 respectively.

[0132] Reference Figures 4-5 The battery printing section 200 includes a printing feed transmission unit 210, a printing positioning unit 220, a printing table 250, and a printing output transmission unit 270 arranged in sequence along the X1 axis, as well as a printing visual inspection unit 230 located above the printing positioning unit 220, a printing loading unit 240 and a printing unit 260 located above the printing table 250, and a second PL detection unit 280 located above the printing output transmission unit 270.

[0133] The printing feed transmission unit 210 is installed on the bottom plate of the frame 10, and includes A1 printing feed tracks respectively connected to A1 battery cell feed tracks. Each printing feed track is installed with a heating tube for drying the solder paste on the battery cell 02.

[0134] The printing positioning unit 220 is used to align the edge of the battery cell 02 in the Y1 axis direction, and the printing visual inspection unit 230 is used to capture the appearance contour image of the aligned battery cell 02.

[0135] The printing table 250 is set on the table of the frame 10 through a table drive device, and the top surface is provided with an adsorption device for adsorbing the battery cell 02. The printing table 250 has a receiving position, a printing position and a discharge position; the table drive device includes a second horizontal drive device that moves along the X1 axis, and a second vertical drive device that is set at the driving end of the second horizontal drive device and moves along the Z1 axis. The printing table 250 is connected to the driving end of the second vertical drive device; the second horizontal drive device is used to transfer the printing table 250 to the receiving position or the discharge position, and the second horizontal drive device adopts a linear motor; the second vertical drive device is used to transfer the printing table 250 to the printing position, and the second vertical drive device is preferably a servo motor.

[0136] The printing loading unit 240 is suspended on the top of the frame 10, and includes A1 loading assemblies corresponding to A1 printing feed tracks respectively. Each loading assembly is used to grab the corrected previous battery cell 02 and the next battery cell 02 by the printing positioning unit 220 and place them on the printing table 250 located at the receiving position. It includes a first horizontal drive device that moves along the X1 axis and a first vertical drive device that is arranged at the driving end of the first horizontal drive device and moves along the Z1 axis; the first horizontal drive device and the first vertical drive device respectively use a linear motor and a motion cylinder.

[0137] Reference Figure 5 The printing unit 260 is used to print UV glue on the battery cell 02 of the printing table 250 located at the printing position. It is installed above the printing table 250 through four columns, and includes a third horizontal drive device 261 that moves along the X1 axis, a third vertical drive device 262 that is arranged at the drive end of the third horizontal drive device 261 and moves along the Z1 axis, and a printing scraper 263 that is arranged at the drive end of the third vertical drive device 262; the third horizontal drive device 261 adopts a dual-drive screw module to move the printing scraper 263 in the X1 axis direction to print UV glue; the third vertical drive device 262 preferably adopts a servo motor, and can also use a stepping motor to move the printing scraper 263 in the Z1 axis direction to control the height of the printing scraper 263 from the printing screen.

[0138] The printing material discharging transmission unit 270 is installed on the table of the frame 10 and includes A1 printing material discharging tracks corresponding to the discharging positions of the printing table 250.

[0139] The second PL detection unit 280 is located above the A1 printing discharge track and is used to detect whether the printed battery cell 02 has defects.

[0140] See also Figure 6 、 Figure 7 The string making section 300 includes a string making positioning unit 320, a string transmission unit 330, a string feeding unit 310 and a string making visual inspection unit 350;

[0141] The serial loading unit 310 is suspended on the top of the frame 10, and includes A1 string-making horizontal drive devices (linear motors) that move along the X1 axis and correspond to A1 printing discharge tracks respectively. The driving end of each string-making horizontal drive device is sequentially provided with a first mover mechanism 311 and a second mover mechanism 312 along the X1 axis. The first mover mechanism 311 is used to transport the battery cell 02 on the corresponding printing discharge track to the string-making positioning unit 320, and the second mover mechanism 312 is used to transport the battery cell 02 on the string-making positioning unit 320 to the corresponding serial transmission track of the serial transmission unit 330. The first mover mechanism 311 and the second mover mechanism 312 are both provided with two Z1-axis motion cylinders corresponding to the previous battery cell 02 and the next battery cell 02 respectively.

[0142] The first moving mechanism 311 is further provided with a cell rotating mechanism 313 for rotating the cell 02 according to the appearance contour image captured by the stringing visual inspection unit 350 .

[0143] The serial transmission unit 330 is located on the table of the rack 10 and is used to simultaneously transmit A1 battery strings. It includes A1 serial transmission rails corresponding to A1 string-making horizontal drive devices.

[0144] The UV curing unit 340 is located above the A1 serial transmission track and is used to use UV light to irradiate the battery cell 02 and the welding ribbon group to achieve an effective fixed connection between the welding ribbon 01 and the battery cell 02 to form a battery string.

[0145] Reference Figures 8 to 15 The unwinding unit 400 is used to provide the welding tape 01 to the tape making unit 500, and includes a switching unit 470 and a plurality of unwinding units 410 arranged in sequence along the vertical direction.

[0146] Reference Figure 8 、 Figure 9 、 Figure 13 The switching unit 470 is used to switch between different unwinding units 410, which includes a fixed plate, a switching cylinder 471 arranged on the fixed plate, and a vertical guide rail 472; a connecting plate 473 is arranged on the vertical guide rail 472, and the driving end of the switching cylinder 471 is connected to the connecting plate 473 to drive the connecting plate 473 to move in the vertical direction.

[0147] In this embodiment, the plurality of unwinding units 410 are two unwinding units 410 symmetrically arranged up and down.

[0148] Each unwinding unit 410 includes a tape supply unit 420, a wire passing wheel assembly 450, a tape winding unit 430, a tape storage unit 440, multiple wire passing wheel assemblies 450, and a wire clamping unit 460, which are sequentially arranged along the path of the welding tape 01. The wire clamping units 460 of the two unwinding units 410 are sequentially arranged on the connecting plate 473 in the vertical direction.

[0149] The tape supply unit 420 is used to provide the welding tape 01 and includes a vertically arranged tape supply base plate 421 and A2 tape supply groups vertically arranged on the tape supply base plate 421 , where A2 = 1 to 30. Each tape supply group includes a rotating shaft 422 and a first tape winding shaft 424 .

[0150] Reference Figure 10 Each rotating shaft 422 is provided with B2 solder tape pay-off reels 423, B2=2. After all the solder tape 01 on the solder tape pay-off reels 423 is consumed, it needs to be replaced manually. Each rotating shaft 422 includes B2 unwinding shafts that are sequentially sleeved from the inside to the outside and with decreasing lengths. The first solder tape pay-off reel 423 is sleeved on the protruding part of the first unwinding shaft, and the remaining solder tape pay-off reels 423 are similar in sequence. The first unwinding shaft 425 extends beyond the second unwinding shaft 426, and is fitted with a first tapered sleeve 427 between the first and second ends of the unwinding shaft 423. A shaft end lock 429 is fixedly connected to the end of the first unwinding shaft 425 away from the second unwinding shaft 426. The second unwinding shaft is fitted with a second tapered sleeve 428 and a baffle 4220 between the first and second ends of the unwinding shaft 423, with the baffle 4220 positioned away from the first unwinding shaft 423. The second unwinding shaft 426 is connected to the first unwinding shaft 425 via a rotating bearing 4221. Therefore, multiple unwinding shafts 423 can rotate independently, unaffected by other unwinding shafts 423. Even if one unwinding shaft 423 requires replacement or maintenance, the others can continue to operate normally. In addition, since the welding ribbon pay-off drum 423 rotates only when needed, its rotational energy consumption and mechanical wear are reduced, which helps to extend the service life of the equipment.

[0151] Each first winding shaft 424 is provided with B2 rollers for winding the welding ribbon 01 , which are used to change the direction of the welding ribbon 01 , adjust the tension and stabilize the transmission of the welding ribbon 01 .

[0152] The tape winding unit 430 is used to change the direction of the welding tape 01. It includes a vertically arranged tape winding base plate 431, A2 second tape winding shafts 432 vertically arranged on the tape winding base plate 431 and parallel to the rotation axis 422, and each second tape winding shaft 432 is provided with B2 passing wheels 433. The passing wheels 433 are used to change the direction of the welding tape 01 from a vertical direction to a nearly horizontal direction.

[0153] Reference Figures 10-11 The tape storage unit 440 is used to control the tension of each soldering tape 01 on each soldering tape pay-off reel 423. It includes a plurality of guide rails that are the same as the number of soldering tapes 01, ensuring that each soldering tape 01 can float up and down independently.

[0154] Each tape storage unit 440 includes a base 441 , a vertical plate 442 , two guide rail units 443 and two position-limiting units 444 ; the vertical plate 442 is vertically disposed on the top surface of the base 441 .

[0155] Each guide rail unit 443 includes B2 guide rail shafts 445 parallel to the rotation axis 422. There is a gap between each guide rail shaft 445 and the vertical plate 442, and both ends are connected to the vertical plate 442 through support rods 446. Multiple parallel circumferential rings are set on the side wall of the guide rail shaft 445, and each circumferential ring is used as a guide rail for a welding strip 01.

[0156] The guide shafts 445 of the same guide rail unit 443 are at the same height. All guide shafts 445 of one guide rail unit 443 are positioned below all guide shafts 445 of another guide rail unit 443, and the gap between them and the vertical plate 442 is larger to accommodate smaller spaces. Two limit units 444 correspond to the two guide rail units 443 and are located on either side of the vertical plate 442. Each limit unit 444 includes B2 limit switches, corresponding to B2 guide shafts 445.

[0157] Reference Figure 8 Each wire clamping unit 460 includes B2 wire pressing base plates 461 and 2*B2 positioning pins 466; each wire pressing base plate 461 is arranged horizontally, and a wire passing trough plate 462, a wire pressing block unit, and a wire pressing cover plate 465 are sequentially arranged along the length direction of the welding ribbon 01. A plurality of wire grooves are arranged on the wire passing trough plate 462 perpendicular to the length direction of the welding ribbon 01 (for positioning purposes, to prevent the welding ribbon from sliding or deflecting laterally when clamped). Each wire groove is connected along the length direction of the welding ribbon 01 and is used to pass through a welding ribbon 01. The groove width of each wire groove is 0.5 to 1 mm greater than the width of the welding ribbon 01; the wire pressing block unit includes a plurality of wire pressing blocks 463 corresponding to the plurality of wire grooves. In other embodiments, the groove width of each wire groove may be 0 to 3 mm greater than the width of the welding ribbon 01.

[0158] Reference Figure 9 Each wire pressing block 463 is provided with a pressing block 467 adapted to the wire groove on the side close to the wire groove. The top surface of the pressing block 467 is an inclined surface. The pressing block 467 passes through the wire groove. The wire pressing block 463 and the pressing block 467 are used to press the welding ribbon 01 on the top surface of the wire pressing bottom plate 461.

[0159] The wire pressing cover plate 465 is used to press the welding ribbon 01 on the top surface of the wire pressing base plate 461. The wire pressing cover plate 465 is installed on the wire pressing base plate 461 using six locking nuts 464. After the manual wire pressing is completed, each wire pressing cover plate 465 is fixed to the work station by two positioning pins 466.

[0160] Reference Figures 8-12Each wire-passing wheel assembly 450 includes B2 wire-passing wheels parallel to the rotation axis 422. The B2 wire-passing wheels are coaxial and arranged sequentially along the axis. A wire-passing wheel assembly 450 is arranged between the second winding shaft 432 of the winding unit 430 and the guide shaft 445 of the storage unit 440. The wire-passing wheel assembly 450 is arranged on the side of the winding base plate 431 near the storage unit 440 through a support plate. The B2 wire-passing wheels of the wire-passing wheel assembly 450 correspond to the B2 guide shafts 445, respectively, and are used to transition the welding ribbon 01 from the horizontal path to the guide rail of the storage unit 440. Three to four parallel wire-passing wheel assemblies 450 are arranged between the guide shaft 445 of the tape storage unit 440 and the wire-pressing base plate 461 of the wire-holding unit 460. One of the wire-passing wheel assemblies 450 is located on the side of the wire-pressing base plate 461 close to the tape storage unit 440 and is connected to the connecting plate 473. They are used to position the welding ribbon 01 so that it can smoothly enter the wire-holding unit 460. The B2 wire-passing wheels in this wire-passing wheel assembly 450 correspond to the B2 wire-pressing base plates 461 and are correspondingly arranged on the connecting plate 473. The remaining wire-passing wheel assemblies 450 are located above the vertical plate 442 and the guide shaft 445, and the B2 wire-passing wheels in each wire-passing wheel assembly 450 correspond to the B2 guide shafts 445. While saving space, these wire-passing wheel assemblies 450 provide additional support for the path of the welding ribbon 01. Through multiple distribution positions, the soldering ribbon 01 is gradually guided to the fixed position of the wire clamping unit 460 to prevent the soldering ribbon 01 from shifting. Each wire wheel assembly 450 can be adjusted and optimized according to different production requirements to adapt to different types of soldering ribbon specifications and equipment configurations.

[0161] Taking the lower unwinding unit 410 as an example, the welding ribbon 01 of the i-th supply group moves in the following order: the j-th welding ribbon pay-off reel 423 of the i-th supply group, the j-th roller of the i-th first winding shaft 424, the j-th pass roller 433 of the i-th second winding shaft 432, the j-th pass roller of a pass roller group 450, the j-th guide shaft 445 of a guide rail unit 443, the j-th pass rollers of three pass roller groups 450, the j-th wire pressing base 461, and the welding ribbon 01 extends from the j-th wire pressing base 461 and enters the tape making unit. Here, i = 1, ..., A2; j = 1, ..., B2.

[0162] The working process of the tape unwinding unit 400 includes the following steps:

[0163] Step 1: One unwinding unit 410 provides the welding ribbon 01 to the ribbon making unit 5000. Manually perform the following operations on the adjacent unwinding unit 410:

[0164] Replace the solder tape pay-off reel 423 on the two rotating shafts 422 of another adjacent unwinding unit 410A;

[0165] The soldering ribbon 01 on the j-th soldering ribbon pay-off drum 423 of the i-th rotating shaft 422 is passed around the j-th roller of the i-th first winding shaft 424, and then passed around the j-th roller 433 of the i-th second winding shaft 432 to change the direction of the soldering ribbon 01;

[0166] Then it passes around the j-th wire passing wheel of a wire passing wheel group 450, the corresponding guide rail of the j-th guide rail shaft 445 of a guide rail unit 443, and the j-th wire passing wheel of the three wire passing wheel groups 450;

[0167] Finally, the soldering ribbon 01 is pulled to the j-th wire pressing base plate 461, passed through the corresponding wire groove, and then the corresponding wire pressing block 463 and the pressing block 467 are used to press the soldering ribbon 01 on the top surface of the wire pressing base plate 461 to complete the wire pressing. Then, two positioning pins 466 are used to fix the j-th wire pressing base plate 461151 on the work station; where i=1, ..., A2; j=1, ..., B2;

[0168] Step 2: After the welding ribbon 01 of the unwinding unit 410 to be used normally is used up, the connecting plate 473 is driven to move in the vertical direction by switching the cylinder 471, and the adjacent unwinding unit 410 processed in step 1 is switched to provide the welding ribbon 01 to the tape making part 5000.

[0169] Reference Figures 16-28 The tape making unit 5000 includes a straightening and pressing mechanism 5200, a positioning and cutting mechanism 5300, a tape pressing mechanism 5400, a double-row traction mechanism 5500, and a tape support and spacing mechanism 5600, which are sequentially arranged along the transmission direction of the welding tape 01.

[0170] For ease of understanding, the coordinate system is defined as follows: the length direction of the welding ribbon 01 is the X2 axis direction, the vertical upward direction is the positive direction of the Z2 axis, and the Y2 axis conforms to the left-hand rectangular coordinate system.

[0171] Reference Figures 19-20 The straightening and pressing mechanism 5200 is used to straighten and press the welding strip 01 to ensure that the position of the welding strip 01 is accurate and stable in the subsequent process. It includes a straightening and pressing frame 5210, and two welding strip pressing assemblies 5220, a wire comb 5230 and an overall welding strip pressing assembly 5240 arranged in sequence on the straightening and pressing frame 5210 along the X2 axis direction.

[0172] A pressing base plate 5211 is provided on the X2Y2 plane of the straightening and pressing frame 5210 , and the pressing base plate 5211 is used to fix other components and provide a working plane.

[0173] Each welding ribbon clamping assembly 5220 is used to independently clamp the welding ribbon 01 to ensure that each welding ribbon 01 can be accurately fixed. It includes a first clamping cylinder 5221, two first clamping guide rods 5222 and a first clamping block 5223; the first clamping cylinder 5221 and the first clamping block 5223 are respectively located below and above the clamping base plate 5211, the length direction of the first clamping block 5223 is parallel to the Y2 axis, and the bottom surface is sequentially provided with multiple clamping grooves along the Y2 axis, and a silicone pad corresponding to the bottom surface of the first clamping block 5223 is provided on the clamping base plate 5211 to ensure that each welding ribbon 01 can be independently clamped; the upper ends of the two first clamping guide rods 5222 are respectively connected to the two ends of the first clamping block 5223, and the lower ends pass through the clamping base plate 5211 to connect to the driving end of the first clamping cylinder 5221.

[0174] The multiple pressing grooves of the two solder ribbon pressing assemblies 5220 are staggered with each other and are used to press the solder ribbons 01 with odd and even sequence numbers respectively.

[0175] The wire comb 5230 is used to guide the soldering ribbon 01 through and ensure that the soldering ribbon 01 is arranged neatly. The top surface of the wire comb 5230 is provided with multiple soldering ribbon grooves with a width of 0.2 to 1 mm to accommodate soldering ribbons 01 of different widths.

[0176] The integral solder strip clamping assembly 5240 is used to provide additional clamping force during the straightening process of the solder strip 01 to further stabilize the position of the solder strip 01. It includes A1 (two) floating pressure block assemblies 5241 arranged in sequence along the Y2 axis above the clamping base plate 5211.

[0177] Each floating pressure block assembly 5241 includes a floating plate 5243, two second clamping cylinders 5242, a first vertical guide rail 5244, a plurality of second clamping guide rods 5245, a plurality of compression springs 5246, a plurality of floating pressure blocks 5247 and a positioning slot assembly.

[0178] Each floating plate 5243 is connected to the drive ends of two second compression cylinders 5242. Both ends of the floating plate 5243 rest on the first vertical guide rail 5244. Multiple second compression guide rods 5245 are positioned in the middle. Each second compression guide rod 5245 is connected to a compression spring 5246 at its base. Below each compression spring 5246 are two floating pressure blocks 5247, each used to compress a welding ribbon 01. Because the welding ribbon 01 requires significant friction during compression and straightening, each floating plate 5243 is connected to two second compression cylinders 5242 to provide sufficient positive pressure.

[0179] The floating plate 5243 and the alignment groove assembly are arranged in sequence along the X2 axis. The alignment groove assembly is used to provide a positioning function for the welding ribbon 01 to ensure the precise arrangement of the welding ribbon 01. It includes a plurality of alignment grooves arranged in sequence on the clamping base plate 5211 along the Y2 axis, and a cover plate 5248 located above the plurality of alignment grooves; each alignment groove corresponds to a welding ribbon 01, and the cover plate 5248 limits the position deviation of the welding ribbon 01 by covering the alignment groove.

[0180] Reference Figure 21 The positioning and cutting mechanism 5300 is used to accurately position the welding tape 01 and cut it according to length. It includes a positioning and cutting base plate 5310, a positioning and cutting motor 5320, a first horizontal guide rail 5330, a positioning and cutting frame 5340, A1 cutter assembly 5350 and A1 positioning comb assembly.

[0181] The positioning tape cutting motor 5320 and the first horizontal guide rail 5330 (moving along the X2 axis direction) are respectively arranged on the bottom and top surfaces of the positioning tape cutting base plate 5310, and the positioning tape cutting frame 5340 is arranged on the first horizontal guide rail 5330 and connected to the driving end of the positioning tape cutting motor 5320; the positioning tape cutting frame 5340 is provided with two cutter assemblies 5350 arranged in sequence along the Y2 axis and two positioning comb assemblies arranged in sequence along the Y2 axis.

[0182] Each cutter assembly 5350 includes two cutter units 5351 symmetrically arranged in the upper and lower parts, and the symmetrical arrangement is used to improve the stability of cutting; each cutter unit 5351 includes a cutter cylinder 5352, a second vertical guide rail 5353, a cutter seat 5354, and a cutter 5355 arranged on the cutter seat 5354, which is located on the second vertical guide rail 5353 and connected to the drive end of the cutter cylinder 5352; the cutters 5355 of the two cutter units 5351 cooperate with each other to cut the welding strip 01 between them.

[0183] Each cutter assembly 5350 corresponds to a positioning comb assembly, and each cutter assembly 5350 and the corresponding positioning comb assembly are arranged in sequence along the X2 axis direction. Each positioning comb assembly includes two positioning comb units 5361 corresponding to the two cutter units 5351. Each positioning comb unit 5361 includes a positioning comb cylinder 5362, a positioning comb guide rail 5363 (moving along the Y2 axis direction), a positioning plate 5364, and a plurality of positioning steel needles 5365 arranged on the positioning cutting frame 5340; the positioning plate 5364 is arranged on the positioning comb guide rail 5363 and connected to the driving end of the positioning comb cylinder 5362, and a plurality of positioning steel needles 5365 are arranged on the bottom surface of the positioning plate 5364. The multiple positioning steel needles 5365 of the two positioning comb units 5361 are staggered with each other, and the gaps between adjacent positioning steel needles 5365 are used to pass through the welding strip 01 to straighten the welding strip 01.

[0184] Reference Figure 22 The solder ribbon pressing mechanism 5400 is used to press the solder ribbon 01 to a specified position and provide sufficient pressure for subsequent processing. It includes a double-row press needle assembly 5410 and a single-row press needle assembly 5420 arranged in sequence along the X2 axis. The single-row press needle assembly 5420 and the double-row press needle assembly 5410 both include a press needle motor 5401, a lead screw 5402, a third vertical guide rail 5403, and a press needle mounting plate 5404; the press needle mounting plate 5404 is arranged on the third vertical guide rail 5403 and is connected to the driving end of the press needle motor 5401 through the lead screw 5402.

[0185] The double-row press needle assembly 5410 is used to press multiple solder strips 01 at the same time, and two press needle units are set on the bottom surface of its press needle mounting plate 5404. The single-row press needle assembly 5420 is used to assist the double-row press needle assembly 5410 in pressing multiple solder strips 01, and a press needle unit is set on the bottom surface of its press needle mounting plate 5404. Each press needle unit includes multiple press needles 5405 arranged in sequence along the Y2 axis, and each press needle 5405 corresponds to a solder strip 01.

[0186] Each pressure pin 5405 is fixed to the corresponding pressure pin mounting plate 5404 by a threaded connection, which is convenient for replacement.

[0187] In making the long welding strip 03 between the two battery cells 02 ( Figure 27 ), the double-row press pin assembly 5410 and the single-row press pin assembly 5420 can act simultaneously to produce the short solder strip 04 ( Figure 28 ), only the double-row press pin assembly 5410 is activated. The short solder strips 04 between strings are the short solder strips on the last cell 02 of the previous cell string and the short solder strips on the first cell 02 of the next cell string.

[0188] The welding ribbon clamping mechanism 5400 also includes a maintenance cylinder 5430. The driving end of the maintenance cylinder 5430 is connected to the single-row pressure needle assembly 5420 and the double-row pressure needle assembly 5410 through a connecting plate. It is used to drive the single-row pressure needle assembly 5420 and the double-row pressure needle assembly 5410 to the upper position when the equipment is repaired, which is convenient for maintenance.

[0189] Reference Figures 23-24 The double-row traction mechanism 5500 is used to clamp and pull the welding ribbon 01, moving it according to a preset length to provide the standardized welding ribbon segments required for subsequent processing (such as welding). The double-row traction mechanism 5500 includes A1 traction assemblies 5510 arranged in sequence along the Y2 axis. Each traction assembly 5510 includes a traction base plate 5511, a traction motor 5512 arranged on the top surface of the traction base plate 5511, a traction guide rail 5513 (moving along the X2 axis), and a clamping assembly 5514. The clamping assembly 5514 is arranged on the traction guide rail 5513 and is connected to the drive end of the traction motor 5512.

[0190] The clamping assembly 5514 includes a lower clamping jaw 5519 and two clamping units 5516. The two clamping units 5516 are stacked one above the other, each of which includes a mounting plate 5517, a coupling cylinder 55120, multiple piston rods 5518, and multiple clamping jaws 5519. The coupling cylinder 55120 is mounted on the mounting plate 5517 and connected to the multiple clamping jaws 5519 via multiple piston rods 5518. The multiple clamping jaws 5519 are arranged sequentially along the Y2 axis. The lower clamping jaw 5519 is mounted on the mounting plate 5517 of the lower clamping unit 5516 and cooperates with the multiple clamping jaws 5519 of the two clamping units 5516. The multiple clamping jaws 5519 of the two clamping units 5516 are staggered, respectively, to clamp the odd-numbered and even-numbered welding ribbons 01.

[0191] Reference Figures 25-26 The support belt spacing mechanism 5600 is used to separate and arrange the welding ribbons 01 in odd and even sequences and precisely position them, providing a preset welding ribbon layout for subsequent welding. The support belt spacing mechanism 5600 includes a spacing base plate 5610, a first spacing motor 5620, a spacing assembly 5630, and A1 adsorption assemblies 5640. The first spacing motor 5620 (a linear motor, moving along the X2 axis) is mounted on the top surface of the spacing base plate 5610, and the spacing assembly 5630 is mounted thereon. The spacing assembly 5630 includes a second spacing motor 5631 and a second horizontal guide rail 5632 (moving along the X2 axis). Two adsorption assemblies 5640 are sequentially mounted on the second horizontal guide rail 5632 along the Y2 axis and connected to the drive end of the second spacing motor 5631. The two adsorption assemblies 5640 move along the X2 axis below the clamping assemblies 5514 of the two traction assemblies 5510, respectively.

[0192] Each adsorption assembly 5640 includes two adsorption units 5641 arranged in sequence along the X2 axis. Each adsorption unit 5641 includes an adsorption base 5642, five parallel adsorption bars 5643 and a plurality of positioning bosses 5645. Each adsorption bar 5643 corresponds to a welding strip 01. A plurality of adsorption holes 5644 are provided on the top surface of the adsorption bar 5643. Every two positioning bosses 5645 are provided on both sides of an adsorption hole 5644 to assist in positioning the welding strip 01. The adsorption base 5642 is connected to the driving end of the second spacing motor 5631, and an adsorption gas path is provided inside, which is respectively connected to each adsorption hole 5644. The adsorption bars 5643 of the two adsorption units 5641 are staggered with each other, and are respectively used to adsorb welding strips 01 with odd and even numbers.

[0193] The floating pressure block assembly 5241 of the integral ribbon clamping assembly 5240, the cutter assembly 5350 of the positioning and cutting mechanism 5300, the gripper assembly 5514 of the double-row traction mechanism 5500, and the suction assembly 5640 of the support and spacing mechanism 5600 all correspond to each other. The coordination of these modules ensures stable transfer and precise processing of the ribbon 01 between different workstations.

[0194] The working process of the tape making unit 5000 includes the following steps:

[0195] Step 1: All the welding ribbons 01 are sequentially passed through the multiple welding ribbon slots of the wire comb 5230, the corresponding cutter assembly 5350, and the gaps between the adjacent positioning steel needles 5365 in the corresponding positioning comb assembly. All the welding ribbons 01 are clamped by the two clamping assemblies 5514, and then all the welding ribbons 01 are compressed by the two welding ribbon compression assemblies 5220 of the straightening and compression mechanism 5200 and the overall welding ribbon compression assembly 5240.

[0196] Step 2: Cut all the soldering ribbons 01 by the two cutter assemblies 5350 of the positioning and cutting mechanism 5300 to form the initial position of the soldering ribbons 01, and then straighten the soldering ribbons 01 by the two positioning comb assemblies, as follows:

[0197] Step 2.1: In each cutter assembly 5350, the two cutter units 5351 drive the cutter seat 5354 to move along the second vertical guide rail 5353 via the cutter cylinder 5352. The two cutters 5355 move toward each other to cut off all the welding strips 01, forming the initial position of the welding strips 01.

[0198] Step 2.2: The cut welding ribbon 01 automatically slides into the corresponding positioning comb assembly area. The positioning comb cylinder 5362 drives the positioning plate 5364 to move on the positioning comb guide rail 5363 (moving along the Y2 axis), pushing the welding ribbon 01 into the gap between the steel needles, correcting the position of the welding ribbon 01, and ensuring that the welding ribbon 01 is neatly arranged and parallel to the X2 axis.

[0199] Step 3: Make the two clamping components 5514 loosen all the welding ribbons 01, and then move the two traction components 5510 of the double-row traction mechanism 5500 to the initial position of the welding ribbons 01. Specifically:

[0200] The traction motor 5512 drives the traction assembly 5510 to move along the traction guide rail 5513 toward the initial position of the welding ribbon 01. When the traction assembly 5510 approaches the initial position of the welding ribbon 01, the position can be detected by mechanical limit or sensor to ensure that the traction assembly 5510 reaches the correct initial position of the welding ribbon 01.

[0201] Step 4: Clamp all the welding ribbons 01 using two clamping components 5514;

[0202] Alternatively, the soldering ribbons 01 with even numbers are clamped by one clamping unit 5516 of the two clamping assemblies 5514, and the soldering ribbons 01 with odd numbers are clamped by one soldering ribbon clamping assembly 5220 of the straightening and clamping mechanism 5200;

[0203] The welding ribbons 01 with odd numbers are clamped by a clamping unit 5516 of the two clamping assemblies 5514, and the welding ribbons 01 with even numbers are clamped by a welding ribbon clamping assembly 5220 of the straightening and clamping mechanism 5200;

[0204] The clamping action of a clamping unit 5516 is as follows: the linked cylinder 55120 is activated, driving the piston rod 5518 to move, driving the multiple clamping jaws 5519 to press down; each clamping jaw 5519 contacts and clamps the corresponding welding strip 01 to ensure that the welding strip 01 is fixed;

[0205] The specific pressing action of a solder ribbon pressing assembly 5220 is as follows: the first pressing cylinder 5221 drives the first pressing block 5223 to move downward, and the solder ribbon 01 is independently pressed through the pressing groove at the bottom of the first pressing block 5223;

[0206] Step 5: Move the two traction assemblies 5510 of the double-row traction mechanism 5500 in the positive direction of the X2 axis by a preset distance, and place the support belt spacing mechanism 5600 below the welding ribbon 01. Specifically:

[0207] The traction motor 5512 drives the two traction components 5510 of the double-row traction mechanism 5500 to move the preset distance in the positive direction along the X2 axis through the traction guide rail 5513. For the long welding strip 03 between the two battery cells 02, as shown in FIG. Figure 27 As shown, the preset distance = the width of two battery cells 02 - 2 * compensation value; for the short welding strip 04 between strings, as shown Figure 28 As shown, the preset distance = the width of a battery cell 02 - the compensation value; the compensation value is determined by the battery process, and generally, the compensation value is -10~10mm;

[0208] Step 6: Press down the single-row press pin assembly 5420 and the double-row press pin assembly 5410 on the solder ribbon pressing mechanism 5400;

[0209] Alternatively, the double-row pressing pin assembly 5410 on the solder ribbon pressing mechanism 5400 is pressed downward;

[0210] Step 7: Move the positioning cutting frame 5340 of the positioning cutting mechanism 5300 in the positive direction of the X2 axis by a preset distance of 5, so that the two cutter assemblies 5350 cut the welding ribbon 01 in step 8 without interfering with the straightening and pressing mechanism 5200; the preset distance is 2-10 mm;

[0211] Step 8: Cut off all the welding ribbons 01 by positioning the two cutter assemblies 5350 of the ribbon cutting mechanism 5300;

[0212] Step 9: Move the two solder ribbon pressing components 5220 and the overall solder ribbon pressing component 5240 of the solder ribbon pressing mechanism 5400 in the positive direction of the Z2 axis to release the solder ribbon 01;

[0213] Step 10: Move the two adsorption components 5640 of the tape spacing mechanism 5600 in the positive direction of the X2 axis. At the same time, one adsorption unit 5641 of each adsorption component 5640 adsorbs the soldering ribbon 01 with an even or odd sequence number, and completes the tape making to obtain a soldering ribbon group. Figure 27 、 Figure 28 shown.

[0214] Reference Figure 29 The conveyor belt portion 600 includes a fixed bracket 610 and A1 conveying units.

[0215] A moving device 620 that moves in the horizontal direction is provided on the fixed bracket 610. The moving device 620 includes a conveyor linear motor 621 and a conveyor mounting plate 622 provided at the driving end of the conveyor linear motor 621. A1 transport units are provided on the conveyor mounting plate 622.

[0216] Each transport unit includes a lifting device 660 , a suction plate 401 , a needle pressing device 650 , a UV lamp board 670 , and M vacuum generators 630 , where M is ≥ 2; in this embodiment, M is 4.

[0217] Reference Figure 31 The lifting device 660 includes a lifting assembly, a guide rail connecting plate 6604, and a linear guide 6605. The lifting assembly includes a lifting motor 6601, a screw rod 6602, and a lifting cylinder connecting plate 6603. The lifting motor 6601 is mounted on the conveyor belt mounting plate 622, and its driving end is connected to the lifting cylinder connecting plate 6603 via a screw rod 6602. The guide rail connecting plate 6604 is mounted on the lifting cylinder connecting plate 6603, and the linear guide 6605 is mounted on the guide rail connecting plate 6604. The lifting motor 6601 is a servo motor.

[0218] The pressing needle device 650 includes a pressing needle drive assembly, a support plate 6503, a pressing needle connecting plate 6505 and multiple spring pressing needles 6506. The pressing needle drive assembly includes a pressing needle cylinder 6501 and a pressing needle cylinder 6501 connecting plate; the pressing needle cylinder 6501 is arranged on a linear guide rail 6605, and its driving end is connected to the pressing needle cylinder 6501 connecting plate, a support plate 6503 is arranged on the pressing needle cylinder 6501 connecting plate, and the pressing needle connecting plate 6505 is arranged below the support plate 6503. The support plate 6503 and the pressing needle connecting plate 6505 are connected by six connecting shafts 6504. The top surface of the pressing needle connecting plate 6505 is provided with an adsorption plate 401, and the bottom surface is provided with a UV lamp board 670; multiple spring pressing needles 6506 are arranged on the bottom surface of the pressing needle connecting plate 6505, and pass through the substrate 6701 of the UV lamp, which is used to press the welding ribbon 01 onto the battery cell 02 so that it is in close contact with the UV glue.

[0219] The pressing needle cylinder 6501 is used to drive the pressing needle connecting plate 6505 to move in the vertical direction; the lifting motor 6601 is used to drive the adsorption plate 401 to move in the vertical direction.

[0220] Reference Figure 30 The UV lamp board 670 includes a substrate 6701 (copper) arranged on the bottom surface of the pressure pin connecting plate 6505, a plurality of UV lamp beads 6702 arranged on the substrate 6701, and a light shielding component. The plurality of UV lamp beads 6702 correspond to the positions of the UV glue on the battery cell 02. The light shielding component is used to block the UV glue that does not need to be cured, and includes a light shielding plate 6703 and a plurality of light shielding foams 6704; the light shielding plate 6703 is located at the end of the substrate 6701 close to the adjacent transport unit to block the UV glue on the adjacent battery cell 02; the plurality of light shielding foams 6704 are divided into multiple rows, and a UV lamp bead 6702 is set between adjacent light shielding foams 6704 in each row of light shielding foams 6704 to block the UV lamp bead 6702.

[0221] 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 01. Each group of adsorption holes is controlled by a vacuum generator 630. Each adsorption hole is connected to a suction cup 6402. The adsorption end of each suction cup 6402 passes through the pressure needle connecting plate 6505 and the base plate 6701 of the UV lamp board 670 in sequence to adsorb the corresponding welding strip 01.

[0222] For the short solder strips on the first and last battery cells 02 in the same battery string, one set of adsorption holes can be used for adsorption respectively; for the short solder strips 04 between strings on the last battery cell 02 in the previous battery string and the first battery cell 02 in the next battery string, two sets of adsorption holes can be used for adsorption simultaneously.

[0223] Each group of adsorption holes is arranged in a row-column matrix, and the row direction is perpendicular to the length direction of the solder strip. The number of rows of each group of adsorption holes is greater than or equal to 3. In this embodiment, the number of rows is 3, that is, each solder strip is adsorbed by at least three suction cups 6402.

[0224] Reference Figure 33 、 Figure 35 In this embodiment, the value of M is 4, and the four groups of adsorption holes are respectively the first group of adsorption holes 6403, the second group of adsorption holes 6404, the third group of adsorption holes 6405, and the fourth group of adsorption holes 6406; the first row of the second group of adsorption holes 6404, the first row of the third group of adsorption holes 6405, the second row of the second group of adsorption holes 6404, the second row and the third row of the third group of adsorption holes 6405, and the fourth row of the second group of adsorption holes 6404 are arranged in sequence, and the columns of the second group of adsorption holes 6404 and the third group of adsorption holes 6405 are staggered.

[0225] Reference Figure 32 、 Figure 33 One adsorption plate 401 corresponds to three battery cells 02 arranged in sequence. The first group of adsorption holes 6403 and the second group of adsorption holes 6404 are used to adsorb the long solder strips 03 on the first and second battery cells 02 of the three battery cells 02 arranged in sequence. The third group of adsorption holes 6405 and the fourth group of adsorption holes 6406 are used to adsorb the long solder strips 03 on the second and third battery cells 02 of the three battery cells 02 arranged in sequence. Multiple light-shielding foams 6704 are used to block the UV glue from the preset positions of the short solder strips / short solder strips between strings 04 on the battery cells 02.

[0226] Reference Figure 34 、 Figure 35 The first group of adsorption holes 6403 and the second group of adsorption holes 6404 are used to simultaneously adsorb the short inter-string welding strips 04 on the last battery cell 02 in the previous battery string and the first battery cell 02 in the next battery string.

[0227] The working process of the battery feeding unit 100, the battery printing unit 200, the stringing unit 300 and the belt conveying unit 600 includes the following steps:

[0228] Step 1: The battery cell 02 after solder paste printing is transferred to the first feeding transfer unit 130 of the battery feeding part 100, and the first PL detection unit 110 detects whether the battery cell 02 has defects;

[0229] Then, the edge of the battery cell 02 is aligned in the Y1 axis direction by the feeding positioning unit 120;

[0230] The corrected and defect-free battery cells 02 are transported from the first feeding and transporting unit 130 to the A1 battery cell feeding track of the second feeding and transporting unit 150 by the feeding translation unit 140, and the defective battery cells 02 are transferred to the end material box by the first feeding and transporting unit 130;

[0231] Step 2: The battery cells 02 are respectively transferred to the A1 buffer components of the feed buffer unit 160 through the A1 battery cell feed tracks of the second feed transfer unit 150;

[0232] Step 3: After the A1 buffer components are full, the battery cells 02 on the A1 battery cell feeding tracks are respectively transferred to the A1 printing feeding tracks of the printing feeding transfer unit 210;

[0233] Step 4: Determine whether the solder paste on the battery cell 02 is dried. If so, proceed to step 5. Otherwise, turn on the heating tube of each printing feed track to dry the solder paste on the battery cell 02.

[0234] Step 5: Transfer the cell 02 on the A1 printing feed track to the printing positioning unit 220. The printing positioning unit 220 aligns the edge of the cell 02 in the Y1 axis direction, and then the printing visual inspection unit 230 captures the appearance contour image of the cell 02.

[0235] Step 6: The second horizontal drive device transfers the printing table 250 to the receiving position. The A1 loading assembly of the printing loading unit 240 grabs the battery cell 02 from the printing positioning unit 220 and places it on the printing table 250 at the receiving position. The previous battery cell 02 and the next battery cell 02 are placed in two batches according to the appearance contour image in step 5.

[0236] Step 7: The second vertical drive device moves the printing table 250 in the positive direction of the Z1 axis, so that the printing table 250 is in the printing position. The third vertical drive device 262 controls the height of the printing scraper 263 from the printing screen. The third horizontal drive device 261 then moves the printing scraper 263 in the X1 axis direction to print the UV glue on the battery cell 02.

[0237] Step 8: The second vertical drive device moves the printing table 250 in the negative direction of the Z1 axis, and then the second horizontal drive device moves it in the positive direction of the Z1 axis, so that the printing table 250 is located at the discharge position. Finally, the material transport fork lifts the battery cell 02 from the bottom and transports it to the A1 printing discharge track of the printing discharge transport unit 270;

[0238] Step 9: The second PL inspection unit 280 inspects defects in the battery cells 02 , manually determines whether to remove the defective battery cells 02 , and fills the vacancies by grabbing non-defective battery cells 02 ;

[0239] Step 10: The first moving sub-mechanism 311 of the A1 stringing horizontal driving device respectively transports the battery cells 02 on the A1 printing discharge track to the stringing positioning unit 320. The stringing positioning unit 320 aligns the edge of the battery cell 02 in the Y1 axis direction, and then the stringing visual inspection unit 350 captures the appearance contour image of the battery cell 02;

[0240] According to the requirements of different battery strings, determine whether the battery cell 02 needs to be rotated 180 degrees. If so, execute step 11; otherwise, execute step 12.

[0241] Step 11: The battery cell rotating mechanism 313 corresponding to the first moving mechanism 311 rotates the battery cell 02 180°;

[0242] Step 12: The second moving sub-mechanism 312 of the A1 stringing horizontal driving device respectively moves the battery cells 02 on the stringing positioning unit 320 to the A1 stringing transmission track of the stringing transmission unit 330. When placing, two battery cells 02 are placed in batches according to the appearance outline image of step 10;

[0243] Step 13: The ribbon transport unit 600 places the ribbon assembly on the A1 series-connected solar cells 02. The ribbon transport unit 600 determines whether to pre-cure the ribbon assembly based on the timing and the flatness of the ribbon assembly. If the flatness of the ribbon assembly is poor, pre-curing can be performed to improve the placement of the ribbon assembly.

[0244] Step 13.1: If it is necessary to adsorb the long solder strips 03 on the battery cells 02 arranged in sequence in the same battery string, start the vacuum generators 630 corresponding to the four groups of adsorption holes;

[0245] If it is necessary to adsorb the short solder strip on the first cell 02 or the last cell 02 of the battery string, the vacuum generator 630 corresponding to one group of adsorption holes is activated;

[0246] If it is necessary to simultaneously adsorb the short solder ribbon 04 between the last battery cell 02 of the previous battery string and the first battery cell 02 of the next battery string, the vacuum generators 630 corresponding to two groups of adsorption holes (the first group of adsorption holes 6403 and the third group of adsorption holes 6405) are activated;

[0247] Step 13.2: Start the lifting device 660. The lifting motor 6601 drives the screw rod 6602 to lower the adsorption plate 401. The linear guide rail 6605 ensures the smooth downward movement of the adsorption plate 401.

[0248] Step 13.3: Each suction cup 6402 on the suction plate 401 sucks the corresponding solder strip 01 through the suction hole; then the lifting device 660 drives the suction plate 401 to rise to the moving position;

[0249] Step 13.4: Start the moving device 620, and the linear motor 621 drives the mounting plate 622 to move horizontally, moving the solder ribbon 01 to the top of the battery cell 02;

[0250] Step 13.5: The lifting device 660 drives the adsorption plate 401 downward to place each solder ribbon 01 at a preset position on the battery cell 02;

[0251] Step 13.6: Start the pressing device 650. The pressing cylinder 6501 drives each spring pressing pin 6506 to press the corresponding solder ribbon 01 onto the UV adhesive on the battery cell 02. The pressing device 650 uses multiple spring pressing pins 6506 to provide uniform pressure, ensuring good contact between the solder ribbon 01, UV adhesive, and battery cell 02. After pressing, the solder ribbon 01 is stably held in the designed position of the UV adhesive on the battery cell 02.

[0252] Step 13.7: Determine whether to pre-cure the ribbon 01 by the ribbon transport unit 600 based on the beat and the flatness of the ribbon 01. If yes, proceed to step 13.8; otherwise, proceed directly to step 13.9.

[0253] Step 13.8: Start the UV lamp beads 6702 on the UV lamp board 670 to partially pre-cure the UV glue between the solder ribbon 01 and the solar cell 02. Use the light shielding plate 6703 and multiple light shielding foams 6704 to block the areas that do not need to be cured, ensuring that the UV light only acts on the target location.

[0254] Step 13.9: Turn off the vacuum generator 630 opened in step 13 to release the adsorption state between the adsorption plate 401 and all the solder strips 01. Then, the lifting device 660 drives the adsorption plate 401 to rise and return to the initial height.

[0255] Step 13.10: The mobile device 620 drives the adsorption plate 401 back to the loading area, and steps 13.1 to 13.9 begin a new round of operations until the solder ribbons 01 of all the battery cells 02 are transported.

[0256] Step 14: First, the cell 02 is pressed and cured by the UV curing unit 340, and then the UV glue on the cell 02 is cured to achieve an effective fixed connection between the soldering ribbon 01 and the cell 02, thereby completing the BC battery string welding.

Claims

1. A BC battery string welding machine, comprising a frame (10), characterized in that: The frame (10) is provided with a battery feeding section (100), a battery printing section (200), a string making section (300) which are connected in sequence, and a tape unwinding section (400), a tape making section (5000), and a tape transport section (600) which are connected in sequence. The battery feeding section (100) comprises a battery feeding transmission unit, a first PL detection unit (110) and a feeding positioning unit (120) which are sequentially arranged above the battery feeding transmission unit along the X1 axis; the first PL detection unit (110) is used to detect whether the battery cell (02) has defects, the feeding positioning unit (120) is used to correct the battery cell (02), and the feeding transmission unit is used to transmit the corrected and defect-free battery cell (02) to the battery printing section (200); the positive direction of the X1 axis is the transmission direction of the battery cell (02); The battery printing unit (200) comprises a printing positioning unit (220), a printing unit (260), and a second PL detection unit (280) arranged in sequence along the X1 axis direction; the printing positioning unit (220) is used to correct the battery cell (02); the printing unit (260) prints UV glue on the corrected battery cell (02); and the second PL detection unit (280) is used to detect whether the printed battery cell (02) has defects; The stringing section (300) comprises a stringing loading unit (310), a stringing positioning unit (320), and a stringing transmission unit (330) sequentially arranged along the X1 axis direction; the stringing loading unit (310) is used to grab the battery cell (02) detected as defect-free by the second PL detection unit (280) to the stringing positioning unit (320) for correction, and grab the battery cell (02) corrected by the stringing positioning unit (320) to the stringing transmission unit (330); The tape unwinding unit (400) is used to provide the welding tape (01) to the tape making unit (5000); The strip making unit (5000) is used to make welding strip segments of a preset length and to lay out the welding strip segments to obtain a welding strip group; The ribbon transport unit (600) is used to place the ribbon assembly on the battery cell (02) of the serial transmission unit (330); The serial transmission unit (330) is provided with a UV curing unit (340) for irradiating the cell slices (02) and the soldering ribbon group with UV light to form a cell string.

2. A BC battery stringer according to claim 1, characterized in that: The battery feeding portion (100) further includes a feeding translation unit (140); The battery feed transmission unit includes a first feed transmission unit (130) and a second feed transmission unit (150); The first PL detection unit (110) and the feed positioning unit (120) are sequentially arranged above the first feed transmission unit (130) along the X1 axis direction; the feed positioning unit (120) is used to correct the edge of the battery cell (02) in the Y1 axis direction; the feed translation unit (140) is used to transport the corrected and defect-free battery cell (02) to the second feed transmission unit (150); the Y1 axis conforms to a left-hand rectangular coordinate system in which the positive direction of the X1 axis is the transmission direction of the battery cell (02) and the positive direction of the Z1 axis is vertically upward; The battery printing unit (200) further includes a printing feed transmission unit (210), a printing table (250), and a printing discharge transmission unit (270) sequentially arranged along the X1 axis direction, as well as a printing visual inspection unit (230) located above the printing positioning unit (220) and a printing loading unit (240) located above the printing table (250); The printing positioning unit (220) is located between the printing feed transmission unit (210) and the printing table (250), and the printing unit (260) and the second PL detection unit (280) are respectively located above the printing table (250) and the printing discharge transmission unit (270); The printing feed transmission unit (210) is connected to the second feed transmission unit (150) at its head end and to the printing positioning unit (220) at its tail end; the printing positioning unit (220) is used to correct the edge of the battery cell (02) in the Y1 axis direction, and the printing visual inspection unit (230) is used to photograph the appearance contour image of the corrected battery cell (02); the printing loading unit (240) is used to grab the battery cell (02) from the printing positioning unit (220) to the printing table (250), and to grab the battery cell (02) from the printing table (250) to the printing discharge transmission unit (270); the top surface of the printing table (250) is provided with an adsorption device for adsorbing the battery cell (02); The stringing section (300) further comprises a stringing visual detection unit (350) located above the stringing positioning unit (320); the stringing visual detection unit (350) is used to capture an appearance contour image of the battery cell (02) aligned by the stringing positioning unit (320).

3. The BC battery string welding machine according to claim 2, characterized in that: The second feeding and transporting unit (150) comprises A1 battery cell feeding tracks, each battery cell feeding track transporting two battery cells (02) at a time; A1≥1; The battery feeding section (100) further comprises a feeding buffer unit (160) located at the tail end of the second feeding transmission unit (150) and an end material box located at the tail end of the first feeding transmission unit (130); the feeding buffer unit (160) comprises A1 buffer components corresponding to A1 battery cell feeding tracks respectively; each buffer component comprises two buffer devices, respectively used for buffering the previous battery cell (02) and the next battery cell (02); the end material box is used for storing defective battery cells (02); The printing feed transmission unit (210) comprises A1 printing feed tracks respectively connected to A1 battery cell feed tracks, each printing feed track being equipped with a heating tube for drying the solder paste on the battery cell (02); The printing table (250) is arranged on the frame (10) via a table top drive device, and the printing table (250) has a material receiving position, a printing position, and a material discharging position; the table top drive device includes a second horizontal drive device that moves along the X1 axis, and a second vertical drive device that is arranged at a driving end of the second horizontal drive device and moves along the Z1 axis, and the printing table (250) is connected to the driving end of the second vertical drive device; The second horizontal drive device is used to transport the printing table (250) to a receiving position or a discharging position; the second vertical drive device is used to transport the printing table (250) to a printing position; The printing loading unit (240) comprises A1 loading assemblies corresponding to A1 printing material tracks respectively, each loading assembly being used to grab the corrected previous battery sheet (02) and the next battery sheet (02) from the printing positioning unit (220) onto the printing table (250) located at the receiving position; each loading assembly comprises a first horizontal driving device moving along the X1 axis, and a first vertical driving device arranged at a driving end of the first horizontal driving device and moving along the Z1 axis; The printing unit (260) is used to print UV glue on the battery cell (02) on the printing table (250) located at the printing position, and comprises a third horizontal driving device (261) that moves along the X1 axis, a third vertical driving device (262) that is arranged at the driving end of the third horizontal driving device (261) and moves along the Z1 axis, and a printing scraper (263) that is arranged at the driving end of the third vertical driving device (262); the third horizontal driving device (261) is used to move the printing scraper (263) in the X1 axis direction to print the UV glue; The third vertical driving device (262) is used to move the printing scraper (263) in the Z1 axis direction to control the height of the printing scraper (263); The printing discharge transmission unit (270) is docked with the printing table (250) located at the discharge position; The serial loading unit (310) includes A1 string-making horizontal drive devices that move along the X1 axis and correspond to A1 printing discharge tracks respectively. A first mover mechanism (311) and a second mover mechanism (312) are sequentially provided at the driving end of each string-making horizontal drive device along the X1 axis direction. The first mover mechanism (311) is used to transport the battery cell (02) on the corresponding printing discharge track to the string-making positioning unit (320). The second mover mechanism (312) is used to transport the battery cell (02) on the string-making positioning unit (320) to the corresponding serial transmission track of the serial transmission unit (330). The first mover mechanism (311) and the second mover mechanism (312) are both provided with two Z1-axis motion cylinders corresponding to the previous battery cell (02) and the next battery cell (02). The first moving sub-mechanism (311) is further provided with a battery cell rotating mechanism (313) for rotating the battery cell (02) according to the appearance contour image captured by the stringing visual detection unit (350); The serial transmission unit (330) is used for transmitting A1 battery strings simultaneously, and comprises A1 serial transmission tracks corresponding to A1 string-making horizontal driving devices respectively.

4. A BC battery stringer according to any one of claims 1 to 3, characterized in that: The unwinding unit (400) comprises a switching unit (470) and a plurality of unwinding units (410) arranged in sequence along a vertical direction; The switching unit (470) is used to switch between different unwinding units (410), and comprises a fixed plate, a switching cylinder (471) arranged on the fixed plate, and a vertical guide rail (472); a connecting plate (473) is arranged on the vertical guide rail (472), and the connecting plate (473) is connected to the driving end of the switching cylinder (471); Each of the unwinding units (410) comprises a tape supply unit (420), a tape winding unit (430), a tape storage unit (440), and a wire clamping unit (460) sequentially arranged along the path of the welding tape (01); the wire clamping units (460) of the plurality of unwinding units (410) are sequentially arranged on the connecting plate (473) in a vertical direction; The tape supply unit (420) is used to provide a welding tape (01), and comprises a tape supply base plate (421), A2 rotating shafts (422) vertically arranged on the tape supply base plate (421), A2=1-30, and each rotating shaft (422) is provided with B2 independently rotating welding tape pay-off disks (423), B2=1-2; The tape winding unit (430) is used to change the direction of the welding tape (01), and comprises a tape winding base plate (431), A2 second tape winding shafts (432) vertically arranged on the tape winding base plate (431) and parallel to the rotation axis (422), and B2 rollers (433) are sleeved on each second tape winding shaft (432); The tape storage unit (440) is used to control the tension of each welding tape on each welding tape pay-off reel (423), and comprises 2*B2 guide rail shafts (445) parallel to the rotation axis (422), and a plurality of parallel circumferential rings are provided on the side wall of each guide rail shaft (445) as guide rails, and each guide rail corresponds to a welding tape (01); The wire clamping unit (460) includes B2 wire pressing base plates (461) and a plurality of positioning pins (466); each wire pressing base plate (461) is horizontally arranged on the connecting plate (473), and its upper surface is sequentially provided with a wire passing trough plate (462), a wire pressing block unit, and a wire pressing cover plate (465) along the length direction of the welding strip (01); a plurality of wire grooves are provided on the wire passing trough plate (462) perpendicular to the length direction of the welding strip (01), and each wire groove is used to pass a welding strip (01); the wire pressing block unit includes a plurality of wire pressing blocks (463) corresponding to the plurality of wire grooves; the wire pressing cover plate (465) is used to press the welding strip (01) on the top surface of the wire pressing base plate (461); the plurality of positioning pins (466) are used to fix the corresponding wire pressing base plate (461) on the work station after manual wire pressing is completed; At least one wire passing wheel group (450) is provided between the tape winding unit (430) and the tape storage unit (440), and a plurality of wire passing wheel groups (450) are provided between the tape storage unit (440) and the wire clamping unit (460), each of the wire passing wheel groups (450) comprising B2 wire passing wheels parallel to the rotating shaft (422), and the B2 wire passing wheels are coaxial and sequentially arranged along the axis.

5. The BC battery stringer according to claim 4, characterized in that: Each of the rotating shafts (422) includes B2 unwinding shafts that are sequentially sleeved from the inside to the outside and have decreasing lengths. The first solder strip unwinding reel (423) is sleeved on the portion of the first unwinding shaft (425) that extends from the second unwinding shaft (426), and the remaining solder strip unwinding reels (423) are similar in this manner. Two adjacent unwinding shafts are connected via a rotating bearing (4221). The width of each of the wire grooves is 0-3 mm greater than the width of the welding strip (01); A pressing block (467) adapted to the wire groove is provided on the side of each wire pressing block (463) close to the wire groove, the top surface of the pressing block (467) is an inclined surface, and the pressing block (467) passes through the guide groove. The wire pressing block (463) and the pressing block (467) are used to press the welding strip (01) onto the top surface of the wire pressing base plate (461).

6. The BC battery stringer according to claim 5, characterized in that: The strip making unit (5000) comprises a straightening and pressing mechanism (5200), a positioning and cutting mechanism (5300), a strip pressing mechanism (5400), a double-row traction mechanism (5500), and a strip supporting and spacing mechanism (5600) which are sequentially arranged along the transmission direction of the strip (01); The straightening and pressing mechanism (5200) is used to straighten and press the welding strips (01), and comprises a straightening and pressing frame (5210), two welding strip pressing assemblies (5220) sequentially arranged on the straightening and pressing frame (5210) along the X2 axis, a wire comb (5230) and an integral welding strip pressing assembly (5240); the positive direction of the X2 axis is the transmission direction of the welding strips (01); the two welding strip pressing assemblies (5220) are respectively used to press the welding strips (01) with odd and even numbers; the wire comb (5230) is used to guide the welding strips (01) to pass through and ensure that the welding strips (01) are arranged neatly; the integral welding strip pressing assembly (5240) is used to press all welding strips (01); The positioning and cutting mechanism (5300) is used to position the welding strip and cut it according to length. It includes a positioning and cutting frame (5340) that moves along the X2 axis. The positioning and cutting frame (5340) is provided with A1 cutter assemblies (5350) arranged along the Y2 axis and A1 positioning comb assemblies arranged along the Y2 axis. Each cutter assembly (5350) and its corresponding positioning comb assembly are arranged in sequence along the X2 axis. The cutter assembly (5350) is used to cut the welding strip (01), and the positioning comb assembly is used to correct the cut welding strip (01). A1≥1. The solder strip pressing mechanism (5400) is used to press the solder strip (01) at a specified position, and comprises a plurality of pressing needle units sequentially arranged along the X2 axis, each pressing needle unit comprising a plurality of pressing needles (5405) sequentially arranged along the Y2 axis, and each pressing needle (5405) corresponds to a solder strip (01); the Y2 axis conforms to a left-hand rectangular coordinate system in which the positive direction of the X2 axis is the transmission direction of the solder strip (01) and the positive direction of the Z2 axis is vertically upward; The double-row traction mechanism (5500) is used to clamp and pull the welding strip (01), move it according to a preset length, and provide the welding strip segment required for subsequent processing. It includes A1 clamping components (5514) arranged in sequence along the Y2 axis and moving along the X2 axis; each of the clamping components (5514) includes a lower clamping jaw (5519) and two clamping units (5516); the two clamping units (5516) are stacked up and down, and the multiple clamping jaws (5519) of the two clamping units (5516) are staggered and respectively used to cooperate with the lower clamping jaw (5519) to clamp the welding strips (01) with odd and even sequence numbers; The support strip spacing mechanism (5600) is used to separate and arrange the welding strips (01) in odd and even sequences and position them, providing a preset welding strip layout for subsequent welding. It includes A1 adsorption components (5640) arranged in sequence along the Y2 axis and moving along the X2 axis; each adsorption component (5640) includes two adsorption units (5641) arranged in sequence along the X2 axis, and the A1 adsorption components (5640) are respectively used to move along the X2 axis below the A1 clamping components (5514); the two adsorption units (5641) of each adsorption component (5640) are respectively used to adsorb the welding strips (01) with odd and even sequence numbers.

7. The BC battery stringer according to claim 6, characterized in that: The straightening and pressing frame (5210) is provided with a pressing base plate (5211) on the X2Y2 plane; Each of the solder strip pressing assemblies (5220) comprises a first pressing block (5223) that moves along the Z2 axis; the length direction of the first pressing block (5223) is parallel to the Y2 axis, and a plurality of pressing grooves are sequentially provided on the bottom surface along the Y2 axis; a silicone pad corresponding to the bottom surface of the first pressing block (5223) is provided on the pressing bottom plate (5211); the plurality of pressing grooves of the two solder strip pressing assemblies (5220) are interlaced with each other and are used to press the solder strips (01) with odd and even sequence numbers, respectively; The integral welding strip pressing assembly (5240) comprises A1 floating pressure block assemblies (5241) arranged in sequence along the Y2 axis above the pressing base plate (5211); each floating pressure block assembly (5241) comprises a floating plate (5243) moving along the Z2 axis, and a positive position slot assembly; a plurality of second pressing guide rods (5245) are arranged in the middle of the floating plate (5243), and a compression spring (5246) is connected to the bottom of each second pressing guide rod (5245), and a spring (5246) is arranged below each compression spring (5246). At least one floating pressure block (5247) is provided, and each floating pressure block (5247) is used to press a welding strip (01); the floating plate (5243) and the positioning groove assembly are sequentially arranged along the X2 axis direction, and the positioning groove assembly is used to position the welding strip (01), and includes a plurality of positioning grooves sequentially arranged on the pressing base plate (5211) along the Y2 axis, and a cover plate (5248) located above the plurality of positioning grooves; each positioning groove corresponds to a welding strip (01), and the cover plate (5248) limits the position deviation of the welding strip (01) by covering the positioning groove; Each of the cutter assemblies (5350) comprises two cutter units (5351) symmetrically arranged in an upper and lower direction; each of the cutter units (5351) comprises a cutter (5355) that moves along the Y2 axis, and the two cutters (5355) cooperate with each other to cut the welding strip (01) therebetween; Each positioning comb assembly includes two positioning comb units (5361) corresponding to the two cutter units (5351), each positioning comb unit (5361) includes a positioning plate (5364) that moves along the Y2 axis direction, a plurality of positioning steel needles (5365) are provided on the bottom surface of the positioning plate (5364), the plurality of positioning steel needles (5365) of the two positioning comb units (5361) are staggered with each other, and the gaps between adjacent positioning steel needles (5365) are used to pass through the welding strip (01) to straighten the welding strip (01); The solder strip pressing mechanism (5400) further comprises a double-row pressure needle assembly (5410) and a single-row pressure needle assembly (5420) sequentially arranged along the X2 axis direction, and the single-row pressure needle assembly (5420) and the double-row pressure needle assembly (5410) both comprise a pressure needle mounting plate (5404) that moves along the Z2 axis; the double-row pressure needle assembly (5410) is used for simultaneously pressing a plurality of solder strips (01), and two pressure needle units are arranged on the bottom surface of the pressure needle mounting plate (5404); the single-row pressure needle assembly (5420) is used for assisting the double-row pressure needle assembly (5410) in pressing a plurality of solder strips (01), and one pressure needle unit is arranged on the bottom surface of the pressure needle mounting plate (5404); each pressure needle (5405) is fixed to the corresponding pressure needle mounting plate (5404) by means of a threaded connection; Each of the clamping units (5516) includes a mounting plate (5517) and a linked cylinder (55120). The linked cylinder (55120) is arranged on the mounting plate (5517) and is respectively connected to the plurality of clamping claws (5519) through a plurality of piston rods (5518). The plurality of clamping claws (5519) are arranged in sequence along the Y2 axis. The lower clamping claw (5519) is arranged on the mounting plate (5517) of the lower clamping unit (5516). Each adsorption unit (5641) comprises a plurality of adsorption bars (5643) and a plurality of positioning bosses (5645), each adsorption bar (5643) corresponds to a welding strip (01), a plurality of adsorption holes (5644) are provided on the top surface of each adsorption bar (5643), and two positioning bosses (5645) are symmetrically arranged on both sides of an adsorption hole (5644) for assisting in positioning the welding strip (01); the adsorption bars (5643) of the two adsorption units (5641) are interlaced with each other and are respectively used to adsorb welding strips (01) with odd and even numbers.

8. The BC battery stringer according to claim 7, characterized in that: The conveyor belt portion (600) includes a fixed bracket (610) and A1 conveying units; The fixed support (610) is provided with a moving device (620) that moves in a horizontal direction, and the moving device (620) is provided with the A1 transport units; Each of the transport units comprises a lifting device (660), a pressure needle device (650) and M vacuum generators (630), M≥2; the lifting device (660) is arranged on the moving device (620); the pressure needle device (650) comprises a pressure needle driving assembly arranged at the driving end of the lifting device (660), a support plate (6503) arranged at the driving end of the pressure needle driving assembly, a pressure needle connecting plate (6505) arranged below the support plate (6503), and a plurality of spring pressure needles (6506) arranged on the bottom surface of the pressure needle connecting plate (6505); the support plate (6503) and the pressure needle connecting plate (6505) are connected via a plurality of connecting shafts (6504), and an adsorption plate (6401) is arranged on the top surface of the pressure needle connecting plate (6505); the lifting device (660) is used to drive the adsorption plate (6401) to move in the vertical direction; The plurality of spring pressing pins (6506) are used to press the soldering strip (01) onto the battery sheet (02) so that the soldering strip is in close contact with the UV glue; The bottom surface of the adsorption plate (6401) is provided with M groups of adsorption holes in sequence along the length direction of the welding strip (01); 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 (01), and the number of rows of each group of adsorption holes is greater than or equal to 3; each two consecutive groups of adsorption holes are respectively used to adsorb the same long welding strip (03) on two adjacent battery cells (02); Each group of adsorption holes is controlled by a vacuum generator (630), and each adsorption hole is connected to a suction cup (6402). The adsorption end of each suction cup (6402) passes through the pressure needle connecting plate (6505) and is used to adsorb the corresponding welding strip (01).

9. The BC battery stringer according to claim 8, characterized in that: The value of M is 4; The four groups of adsorption holes are respectively the first group of adsorption holes (6403), the second group of adsorption holes (6404), the third group of adsorption holes (6405), and the fourth group of adsorption holes (6406); The first group of adsorption holes (6403) and the second group of adsorption holes (6404) are used to adsorb the long solder strips (03) on the first and second battery slices (02) of three battery slices (02) arranged in sequence, and the third group of adsorption holes (6405) and the fourth group of adsorption holes (6406) are used to adsorb the long solder strips (03) on the second and third battery slices (02) of three battery slices (02) arranged in sequence.

10. The BC battery stringer according to claim 9, characterized in that: The conveyor belt portion (600) is further used to use UV light to irradiate the UV glue on the battery slice (02) to achieve UV pre-curing; a UV lamp board (670) is provided on the bottom surface of the pressure needle connecting plate (6505); the UV lamp board (670) includes a substrate (6701) provided on the bottom surface of the pressure needle connecting plate (6505), a plurality of UV lamp beads (6702) provided on the bottom surface of the substrate (6701), and a light shielding component; the light shielding component includes a light shielding plate (6703) and a plurality of light shielding foams (6704); the light shielding plate (6703) is located at the end of the substrate (6701) close to the adjacent transport unit to shield the UV glue on the adjacent battery slice (02); the plurality of light shielding foams (6704) are divided into a plurality of rows, and a UV lamp bead (6702) is provided between adjacent light shielding foams (6704) in each row of light shielding foams (6704) to shield the UV lamp bead (6702); The plurality of spring pressure pins (6506) pass through the substrate (6701) and are arranged in a row-column matrix; the column direction of the plurality of spring pressure pins (6506) is parallel to the extension direction of the welding strip (01); The welding ribbon pressing mechanism (5400) further includes a maintenance cylinder (5430), the driving end of which is connected to the single-row pressure needle assembly (5420) and the double-row pressure needle assembly (5410) via a connecting plate, and is used to drive the single-row pressure needle assembly (5420) and the double-row pressure needle assembly (5410) to move to the upper position when the equipment is being maintained.

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