BC battery series welding machine

Abstract

The invention relates to a battery preparation device, in particular to a BC battery series welding machine which is used for solving the problems that although a welding strip whole-string carrying and welding mode adopted in an existing BC battery series welding technology is convenient to operate, compatibility of equipment to length changes of battery strings is low, and the precision of a mode that odd-even welding strips are pulled separately and placed directly is insufficient, and the welding efficiency is poor. And the productivity is limited. The BC battery string welding machine comprises a battery feeding part, a battery printing part, a string manufacturing part, a belt placing part, a belt manufacturing part and a belt conveying part, through seamless linkage of all functional parts, full-automatic production from battery piece feeding to welding solidification is achieved, the production efficiency is greatly improved, the BC battery string welding machine is compatible with battery strings of various welding belt specifications and different lengths, and the diversified process requirements are met.

Description

Technical Field

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

[0002] In recent years, the battery technology in the photovoltaic industry has experienced rapid development, from the initial BSF (Back Surface Field, aluminum back field) battery and PERC (Passivated Emitter and Rear Cell, passivated emitter and rear cell), gradually upgraded to TOPCon (Tunnel Oxide Passivated Contact, tunnel oxide passivated contact) battery, HJT (Heterojunction with Intrinsic Thin-layer, intrinsic thin layer heterojunction) battery and BC (Back Contact, back contact) battery. The continuous evolution of these new battery technologies is mainly committed to improving the efficiency of photoelectric conversion and reducing production costs. Among them, BC batteries have become the focus technology in the industry due to their unique design. The electrodes of this battery are all arranged on the back of the battery cell, forming a cross-knuckle structure, which effectively reduces the front shading and improves the photoelectric conversion efficiency. At the same time, BC batteries can be combined with TOPCon technology to form TBC (TOPCon Back Cntact, TOPCon back contact) batteries, or combined with HJT technology to form HBC (Heterojunction Back Contact, heterojunction back contact) cells, further improving performance, showing its broad prospects as a platform technology.

[0003] However, the unique structural design of BC batteries also poses challenges to string welding technology. Since all welding operations need to be performed on the back, 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 be compatible with changes in the length of the battery string; others use odd and even welding ribbons to be pulled separately and placed directly on the battery cells, but their accuracy is low and their production capacity is limited. These shortcomings of the existing process have become a bottleneck for the further development of BC battery string welding technology.

[0004] Therefore, how to achieve high-precision and high-efficiency welding in the string welding process of BC cells and effectively control the warping of the cell 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, that is, the whole string transportation and welding method of round welding strips is easy to operate, but the equipment has low compatibility with changes in battery string length, and the accuracy of the separate pulling and direct placement of odd and even welding strips is low, and the production capacity is limited, and to provide a BC battery string welding machine.

[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 string welding machine, including a frame, is special in that:

[0008] The frame is provided with a battery feeding part, a battery printing part, a stringing part, and a tape unwinding part, a tape making part, and a tape transport part, which are connected in sequence.

[0009] The battery feeding section includes a battery feeding transmission unit, a first PL (Photoluminescence) detection unit and a feeding positioning unit which are sequentially arranged above the battery feeding transmission unit along the X1 axis direction; the first PL detection unit is used to detect whether there are defects in the battery cell, the feeding positioning unit is used to correct the battery cell, and the feeding transmission unit is used to transmit the corrected and defect-free battery cell 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 which are sequentially arranged along the X1 axis direction; the printing positioning unit is used to correct the battery sheet, the printing unit prints UV glue on the corrected battery sheet, and the second PL detection unit is used to detect whether the printed battery sheet has defects;

[0011] The stringing part includes a serial loading unit, a stringing positioning unit and a serial transmission unit which are sequentially arranged along the X1 axis direction; the serial 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 serial transmission unit;

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

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

[0014] The belt conveyor is used to place the welding belt group on the battery sheet of the serial transmission unit;

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

[0016] Furthermore, the battery feeding part also 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 direction; 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 cell to the second feed transmission unit; the Y1 axis conforms to the 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, as well as a printing visual detection 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 head end of the printing feed transmission unit is connected to the second feed transmission unit, and the tail end is connected to the printing positioning unit; 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 take an 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 string making section also includes a string making visual inspection unit located above the string making positioning unit; the string making visual inspection unit is used to capture the appearance contour image of the battery cell aligned by the string making positioning unit.

[0023] Further, the second feeding and transporting unit comprises 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 comprises a feeding buffer unit located at the tail end of the second feeding transmission unit and an end material box located at the tail end of the first feeding transmission unit; the feeding buffer unit 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 and the next battery cell; the end material box is used for storing defective battery cells;

[0025] The printing feed transmission unit comprises 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 driving device, and the printing table has a receiving position, a printing position and a discharging position; the table driving device includes a second horizontal driving device moving along the X1 axis, and a second vertical driving device arranged at the driving end of the second horizontal driving device and moving along the Z1 axis, and the printing table is connected to the driving end of the second vertical driving device; the second horizontal driving device is used to transfer the printing table to the receiving position or the discharging position; the second vertical driving device is used to transfer the printing table to the printing position;

[0027] The printing loading unit comprises A1 loading assemblies corresponding to A1 printing material tracks respectively, each loading assembly is used to grab the corrected previous battery sheet and the next battery sheet by the printing positioning unit to the printing table 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 the driving end of the first horizontal driving device and moving along the Z1 axis;

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

[0030] The serial feeding unit includes A1 string-making horizontal driving devices that move along the X1 axis and correspond to A1 printing discharge tracks respectively. The driving end of each string-making horizontal driving 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 mover 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 for transmitting A1 battery strings simultaneously, and comprises 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 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 arranged 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 which are sequentially arranged along the welding tape path; the wire clamping units of the multiple unwinding units are sequentially arranged on the connecting plate along 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 comprises 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 passing wheels 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 arranged 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 slot plate, a wire pressing block unit, and a wire pressing cover plate are sequentially arranged on its upper surface along the length direction of the welding strip; a plurality of wire grooves are arranged on the wire passing slot plate perpendicular to the length direction of the welding strip, and each wire groove is used to pass a welding strip; the wire pressing block unit includes a plurality of wire pressing blocks corresponding to the plurality of wire grooves one by one; the wire pressing cover plate is used to press the welding strip onto 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 the 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 arranged 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, and 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 comprises 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 clamping mechanism is used to straighten and clamp the welding strip, and it includes a straightening and clamping frame, two welding strip clamping assemblies arranged on the straightening and clamping frame in sequence along the X2 axis direction, a wire comb and an integral welding strip clamping assembly; the positive direction of the X2 axis is the welding strip transmission direction; the two welding strip clamping assemblies are respectively used to clamp welding strips with odd and even numbers; the wire comb is used to guide the welding strip to pass through and ensure that the welding strips are arranged neatly; the integral welding strip clamping assembly is used to clamp all welding strips; the positioning and cutting mechanism is used to position the welding strip and cut it according to the length, and it includes a positioning and cutting frame moving along the X2 axis direction, and the positioning and cutting frame is provided with a plurality of cutter assemblies arranged along the Y2 axis direction and a plurality of positioning comb assemblies arranged along 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 strip, and the positioning comb assembly is used to correct the cut welding strip; a plurality of cutter assemblies and positioning comb assemblies are respectively used to cut and position the welding strip;

[0046] The solder strip pressing mechanism is used to press the solder strip at a specified position, and includes a plurality of pressing needle units arranged in sequence along the X2 axis, each pressing needle unit includes a plurality of pressing needles arranged in sequence along the Y2 axis direction, and each pressing needle corresponds to a solder strip;

[0047] The double-row traction mechanism is used to clamp and pull the welding strip, move according to a preset length, and provide the welding strip segment required for subsequent processing, which includes a plurality of clamping components arranged in sequence along the Y2 axis and moving along the X2 axis; each clamping component includes a lower clamping jaw and two clamping units; the two clamping units are stacked up and down, and the plurality of clamping jaws are staggered, respectively used to cooperate with the lower clamping jaw to clamp the welding strips with odd and even numbers;

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

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

[0050] Each of the solder strip clamping assemblies comprises a first clamping block moving 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 arranged on the bottom surface along the Y2 axis, and a silicone pad corresponding to the bottom surface of the first clamping block is arranged on the clamping bottom plate; the plurality of clamping grooves of the two solder strip clamping assemblies are staggered with each other, and are respectively used to clamp the solder strips with odd and even numbers;

[0051] The overall welding strip 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 moving along the Z2-axis direction, and a positive positioning groove assembly; a plurality of second clamping guide rods are arranged 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 arranged under each compression spring, and each floating pressure block is used to clamp a welding strip; the floating plate and the positive positioning groove assembly are arranged in sequence along the X2-axis direction, and the positive positioning groove assembly is used to position the welding strip, which includes a plurality of positive positioning grooves arranged in sequence on the clamping base plate along the Y2-axis, and a cover plate located above the plurality of positive positioning grooves; each positive positioning groove corresponds to a welding strip, and the cover plate limits the position deviation of the welding strip by covering the positive positioning groove;

[0052] Each of the cutter assemblies comprises two cutter units symmetrically arranged in an upper and lower direction; each of the cutter units comprises a cutter moving along the Y2 axis direction, and the two cutters cooperate with each other to cut off the welding strip therebetween;

[0053] Each of the positioning comb components includes two positioning comb units corresponding to the two cutter units, each positioning comb unit includes a positioning plate moving along the Y2 axis direction, a plurality of positioning steel needles are arranged 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 correct the welding strip;

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

[0055] Each of the clamping units comprises a mounting plate and a linked cylinder, wherein the linked cylinder is arranged on the mounting plate and connected to the plurality of clamps through a plurality of piston rods, and the plurality of clamps are arranged in sequence along the Y2 axis; the lower clamp 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] Further, the belt conveyor comprises a fixed bracket and A1 transport units;

[0058] The fixed support 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 comprises 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 comprises a pressure needle driving assembly arranged at the driving end of the lifting device, a support plate arranged at the driving end of the pressure needle driving 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 arranged 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 plurality of spring pressing pins are used to press the soldering strip 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, and the row direction is 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; every two consecutive groups of adsorption holes are respectively used to adsorb the same long solder strip on two adjacent battery cells;

[0062] Each group of adsorption holes is controlled by a vacuum generator, each adsorption hole is connected to a suction cup, and the adsorption end of each suction cup passes through the pressure needle 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 arranged on the bottom surface of the pressure pin connecting plate; the UV lamp board includes a substrate arranged on the bottom surface of the pressure pin connecting plate, a plurality of UV lamp beads arranged on the bottom surface of the substrate, and a shading component; the shading component includes a shading plate and a plurality of shading foams; the shading 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 shading foams are divided into a plurality of rows, and a UV lamp bead is arranged between adjacent shading foams in each row of shading foams 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 extension direction of the welding strip;

[0068] The welding strip clamping mechanism also includes a maintenance cylinder, and the driving end of the maintenance cylinder is connected to the single-row pressure needle assembly and the double-row pressure needle assembly through a connecting plate, which is used to drive the single-row pressure needle assembly and the double-row pressure needle assembly to run 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, including a battery feeding unit, a battery printing unit, a string making unit, a tape unwinding unit, a tape making unit, and a tape transport unit. Through the 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 aligns the battery cells printed with solder paste and transmits them to the string making section. The string making section uses the string making visual inspection system and the battery cell rotation mechanism to flexibly adjust the direction of the battery cells according to the specific requirements of the battery string, ensuring the compatibility of different battery cell arrangements; at the same time, the tape making section generates solder strips of different specifications and accurately transports them through the tape 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 capability; the battery feeding section, stringing section and belt conveying section are all equipped with a visual inspection system, which can identify the slight offset of the battery cell and the welding strip, and realize the dynamic adjustment of the position of the battery cell and the welding strip to ensure the positioning accuracy of the welding; the needle pressing device provides uniform pressure through multiple spring needles to ensure that the welding strip is completely fitted with the surface of the battery cell; in the welding strip clamping assembly, the clamping pressure can be adjusted to adapt to welding strips 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 conveying section and the belt making section optimizes the rhythm of each step. During the laying of the solder tape, the belt conveying section uses multiple groups of adsorption holes to achieve rapid adsorption and precise placement of the solder tape, and the synchronous operation with the needle pressing device effectively saves the time for fixing the solder tape and the battery cell. While the belt making section is preparing the next batch of solder tapes, the belt conveying section has already started a new round of solder 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 back 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 tape making unit and the tape transport unit makes the generation, separation and laying of welding tapes more efficient. The tape transport unit can separate and place odd-numbered welding tapes and even-numbered welding tapes according to different requirements to ensure that the positions of welding points are accurate. At the same time, the tape transport unit 600 pre-cures and optimizes the flatness of the welding tape, further improving the reliability of complex welding structures.

[0075] (6) The present invention achieves energy conservation and environmental protection through the coordinated optimization of each module. 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 section, string making section and conveyor section achieve smooth operation through their own independent driving systems, avoiding interference between modules. At the same time, each module adopts a structured and standardized design. For example, the spring needle pressing device and adsorption device of the conveyor section 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 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 The structure of the embodiment of the present invention is shown in FIG. Figure 2 ;

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

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

[0081] Figure 5 It is a structural schematic diagram of a printing unit in an embodiment of the present invention;

[0082] Figure 6 It is a structural schematic diagram of a string making part in an embodiment of the present invention;

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

[0084] Figure 8 It is an axonometric schematic diagram of a tape unwinding unit in an embodiment of the present invention;

[0085] Fig. 9 It is a structural schematic diagram of a first unwinding shaft and a second unwinding shaft of a unwinding part in an embodiment of the present invention, on which a welding tape pay-off drum is sleeved;

[0086] Fig.10 It is a structural schematic diagram of two tape storage units, seven wire-passing wheel groups, two wire-clamping units and a switching unit of a tape-releasing part in an embodiment of the present invention;

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

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

[0089] Fig.13 It is a schematic structural diagram of two wire-passing wheel groups, two wire-gripping units and a switching unit of a tape-releasing part in an embodiment of the present invention;

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

[0091] Fig.15 It is a cross-sectional view of a wire pressing bottom plate, a wire passing slot 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] Fig.16 It is a front view of the belt making part in the embodiment of the present invention;

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

[0094] Fig.18 It is an isometric schematic diagram of a belt making part in an embodiment of the present invention;

[0095] Fig.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] Fig. 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] Fig.21 It is a structural schematic diagram of the positioning and cutting mechanism of the belt making part in the embodiment of the present invention;

[0098] Fig. 22 It is a structural schematic diagram of a welding strip pressing mechanism of a strip making part in an embodiment of the present invention;

[0099] Fig.23 It is a structural schematic diagram of a double-row traction mechanism of a belt making part in an embodiment of the present invention;

[0100] Fig.24 It is a structural schematic diagram of a clamping assembly of a belt making part in an embodiment of the present invention;

[0101] Fig.25 It is a structural schematic diagram of the belt-supporting and spacing mechanism of the belt-making part in an embodiment of the present invention;

[0102] Fig.26 It is a schematic diagram of the structure of each adsorption unit of the belt making part in an embodiment of the present invention;

[0103] Fig. 27 A 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] Fig.28 Schematic diagram of the structure of the short welding strips between strings made by the strip making unit in an embodiment of the present invention.

[0105] Fig.29 It is a structural schematic diagram of the conveyor belt portion in an embodiment of the present invention;

[0106] Fig.30 It is a schematic diagram of the structure of the adsorption plate and UV lamp board of the conveyor belt part in the embodiment of the present invention;

[0107] Fig.31 It is a structural schematic diagram of a needle pressing device and a lifting device of a belt conveyor in an embodiment of the present invention;

[0108] Fig.32 Schematic diagram of the distribution of the long welding ribbon with the length L1 of the ribbon transport portion on two solar cell sheets in an embodiment of the present invention;

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

[0110] Fig.34 Schematic diagram of the distribution of short welding strips with a length L2 of the strip transport portion on two solar cell sheets in an embodiment of the present invention;

[0111] Fig.35 1 is a diagram showing the corresponding relationship between the short welding strip of the length L2 of the strip 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 strip; 02- battery cell; 03- long solder strip; 04- short solder strip 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 feeding transmission unit; 220-printing positioning unit; 230-printing visual inspection unit; 240-printing feeding unit; 250-printing table; 260-printing unit; 261-third horizontal driving device; 262-third vertical driving device; 263-printing scraper; 270-printing discharging transmission unit; 280-second PL detection unit;

[0117] 300- string making part; 310- serial feeding unit; 311- first moving sub-mechanism; 312- second moving sub-mechanism; 313- battery cell rotating mechanism; 320- string making positioning unit; 330- serial transmission unit; 340- UV curing unit; 350- string making visual inspection unit;

[0118] 400-tape unwinding unit; 410-unwinding unit; 420-tape supply unit; 421-tape supply bottom plate; 422-rotating shaft; 423-welding 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 buckle; 4220-baffle; 4221-rotating bearing; 430-tape winding unit; 431-tape winding bottom plate; 432-second tape winding shaft; 433-passing 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-cable clamping unit; 461-wire pressing bottom plate; 462-wire passing slot 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 part; 5200-straightening and clamping mechanism; 5210-straightening and clamping frame; 5211-clamping bottom plate; 5220-welding strip clamping assembly; 5221-first clamping cylinder; 5222-first clamping guide rod; 5223-first clamping block; 5230-thread passing comb; 5240-integral welding strip clamping assembly; 5241-floating clamping block assembly; 5242-second clamping cylinder; 5243-floating plate; 5244-first vertical guide rail; 5245-second clamping 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 clamping mechanism; 5401-pressing needle motor; 5402-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 bottom plate; 5512-traction motor; 5513-traction guide rail; 5514-gripping assembly; 5515 -lower clamping jaw; 5516-gripping unit; 5517-mounting plate; 5518-piston rod; 5519-clamping jaw; 55120-coupling cylinder; 5600-belt spacing mechanism; 5610-spacing bottom 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-needle pressing device; 6501-needle pressing cylinder; 6502-needle pressing cylinder Connecting plate; 6503-support plate; 6504-connecting shaft; 6505-pressure needle connecting plate; 6506-spring pressure needle; 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 in conjunction with the accompanying drawings and exemplary embodiments.

[0122] Reference Figure 1~2 A BC battery stringer includes a frame 10, on which are arranged a battery feeding section 100, a battery printing section 200, a stringing section 300, and a tape unwinding section 400, a tape making section 5000, and a tape transport section 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 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 feed part 100 includes a battery feed transmission unit, a first PL detection unit 110, a feed positioning unit 120, a feed translation unit 140, and a feed buffer unit 160. The battery feed transmission unit includes a first feed transmission unit 130 and a second feed 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 02 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 each 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 unit 200 includes a printing feed transmission unit 210, a printing positioning unit 220, a printing table 250, a printing output transmission unit 270 arranged in sequence along the X1 axis, and 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 inspection 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 correct 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 corrected battery cell 02.

[0135] The printing table 250 is arranged on the table top of the frame 10 through a table top driving 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 discharging position; the table top driving device includes a second horizontal driving device moving along the X1 axis, and a second vertical driving device arranged at the driving end of the second horizontal driving device and moving along the Z1 axis, and the printing table 250 is connected to the driving end of the second vertical driving device; the second horizontal driving device is used to transfer the printing table 250 to the receiving position or the discharging position, and the second horizontal driving device adopts a linear motor; the second vertical driving device is used to transfer the printing table 250 to the printing position, and the second vertical driving 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 to the printing table 250 located at the receiving position. It 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; the first horizontal driving device and the first vertical driving 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 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 adopts a double-drive screw module to make the printing scraper 263 move in the X1 axis direction to print UV glue; the third vertical driving device 262 preferably adopts a servo motor, and can also use a stepping motor to make the printing scraper 263 move 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 top 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 unit 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 movable mechanism 311 and a second movable mechanism 312 along the X1 axis. The first movable 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 movable 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 movable mechanism 311 and the second movable 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 also provided with a battery cell rotating mechanism 313 for rotating the battery cell 02 according to the appearance contour image taken 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, and includes A1 serial transmission tracks corresponding to A1 string-making horizontal driving devices respectively;

[0144] The UV curing unit 340 is located above the A1 serial transmission track and is used to irradiate the battery cell 02 and the welding ribbon group with UV light 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 sequentially arranged along a vertical direction.

[0146] Reference Figure 8 , Fig. 9 , Fig.13 The switching unit 470 is used to switch different unwinding units 410, and 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 set 450, a tape winding unit 430, a tape storage unit 440, a plurality of wire passing wheel sets 450 and a wire clamping unit 460 arranged in sequence along the path of the welding tape 01. The wire clamping units 460 of the two unwinding units 410 are arranged in sequence 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 Fig.10 , each rotating shaft 422 is provided with B2 solder tape pay-off drums 423, B2=2, after all the solder tape 01 on the solder tape pay-off drum 423 is consumed, it needs to be replaced manually; each rotating shaft 422 includes B2 pay-off shafts which are sequentially arranged from the inside to the outside and whose lengths decrease, the first solder tape pay-off drum 423 is arranged on the protruding part of the first pay-off shaft, and the remaining solder tape pay-off drums 423 are arranged in the same way. The first unwinding shaft 425 is sleeved on the part extending from the second unwinding shaft 426, and a first cone sleeve 427 is provided between the two ends of the first unwinding shaft 423; an end of the first unwinding shaft 425 away from the second unwinding shaft 426 is fixedly connected with an axis end lock buckle 429; the second unwinding shaft is sleeved with the second unwinding shaft, and a second cone sleeve 428 and a baffle 4220 are provided between the two ends of the second unwinding shaft 423, and the baffle 4220 is provided away from the first unwinding shaft 423; the second unwinding shaft 426 is connected to the first unwinding shaft 425 through a rotating bearing 4221. Therefore, multiple unwinding shafts 423 can rotate independently without being affected by other unwinding shafts 423, and even if a certain unwinding shaft 423 needs to be replaced or maintained, other unwinding shafts 423 can still operate normally. In addition, since the welding strip pay-off drum 423 rotates only when needed, its rotation energy consumption and mechanical wear are reduced, which helps to extend the service life of the equipment.

[0151] Each first winding shaft 424 is sleeved with B2 rollers for winding the welding ribbon 01 , and the function of the rollers is 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, which 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 rotating axis 422, and each second tape winding shaft 432 is sleeved with B2 passing wheels 433, and 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 solder tape 01 on each solder tape pay-off reel 423, and includes a plurality of guide rails that are the same in number as the solder tapes 01, to ensure that each solder 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 rotating 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. A plurality of parallel circumferential rings are arranged 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 height of the guide shafts 445 of the same guide rail unit 443 is the same, and all the guide shafts 445 of one guide rail unit 443 are located below all the guide shafts 445 of another guide rail unit 443, and the gap between the guide shafts 445 and the vertical plate 442 is larger to adapt to a smaller space. The two limit units 444 correspond to the two guide rail units 443, and are respectively arranged on both sides 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 bottom plates 461 and 2*B2 positioning pins 466; each wire pressing bottom plate 461 is arranged horizontally, and a wire passing slot plate 462, a wire pressing block unit, and a wire pressing cover plate 465 are arranged in sequence along the length direction of the welding strip 01. A plurality of wire grooves are arranged on the wire passing slot plate 462 perpendicular to the length direction of the welding strip 01 (positioning function, to prevent the welding strip from sliding or shifting laterally when clamping), each wire groove is connected along the length direction of the welding strip 01 and is used to pass through a welding strip 01, and the groove width of each wire groove is greater than the width of the welding strip 01 by 0.5 to 1 mm; the wire pressing block unit includes a plurality of wire pressing blocks 463 corresponding to the plurality of wire grooves one by one. In other embodiments, the groove width of each wire groove is greater than the width of the welding strip 01 and can be 0 to 3 mm.

[0158] Reference Fig. 9 A pressing block 467 adapted to the wire groove is arranged on the side of each pressing block 463 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 pressing block 463 and the pressing block 467 are used to press the welding strip 01 onto the top surface of the pressing bottom plate 461.

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

[0160] Reference Figures 8 to 12Each wire-passing wheel group 450 includes B2 wire-passing wheels parallel to the rotating shaft 422, and the B2 wire-passing wheels are coaxial and arranged in sequence along the axis. A wire-passing wheel group 450 is arranged between the second winding shaft 432 of the winding unit 430 and the guide shaft 445 of the storage unit 440, and the wire-passing wheel group 450 is arranged on the side of the winding bottom plate 431 close to the storage unit 440 through a support plate. The B2 wire-passing wheels of the wire-passing wheel group 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 wire-passing wheel groups 450 are arranged parallel to each other between the guide shaft 445 of the tape storage unit 440 and the wire pressing bottom plate 461 of the wire clamping unit 460. One of the wire-passing wheel groups 450 is located on the side of the wire pressing bottom plate 461 close to the tape storage unit 440 and is connected to the connecting plate 473, which is used to position the welding strip 01 so that the welding strip 01 can smoothly enter the wire clamping unit 460. The B2 wire-passing wheels of the wire-passing wheel group 450 correspond to the B2 wire pressing bottom plates 461, and are arranged on the connecting plate 473. The remaining wire-passing wheel groups 450 are located above the vertical plate 442 and the guide shaft 445, and the B2 wire-passing wheels of each wire-passing wheel group 450 correspond to the B2 guide shafts 445. While saving space, these wire-passing wheel groups 450 provide additional support for the path of the welding strip 01. Through multiple distribution positions, the welding strip 01 is guided to gradually transition to the fixed position of the wire clamping unit 460 to avoid deviation of the welding strip 01. Each wire passing wheel group 450 can be adjusted and optimized according to different production requirements to adapt to different types of welding strip specifications and equipment configurations.

[0161] Taking the lower unwinding unit 410 as an example, the direction of the welding tape 01 of the i-th supply tape group is as follows: the j-th welding tape unwinding disk 423 of the i-th supply tape group, the j-th roller of the i-th first winding shaft 424, the j-th passing wheel 433 of the i-th second winding shaft 432, the j-th passing wheel of a passing wheel group 450, the j-th guide shaft 445 of a guide rail unit 443, the j-th passing wheels of three passing wheel groups 450, the j-th pressing bottom plate 461, and the welding tape 01 extends from the j-th pressing bottom plate 461 and enters the tape making part. Among them, 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 tape 01 to the tape making unit 5000, and the following operations are performed manually on another adjacent unwinding unit 410:

[0164] Replace the welding ribbon unwinding reel 423 on the two rotating shafts 422 of another adjacent unwinding unit 410A;

[0165] The soldering tape 01 of the j-th soldering tape pay-off drum 423 of the i-th rotating shaft 422 is passed around the j-th roller of the i-th first tape winding shaft 424, and then passed around the j-th passing wheel 433 of the i-th second tape winding shaft 432 to change the direction of the soldering tape 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 wheels of the three wire passing wheel groups 450;

[0167] Finally, the soldering ribbon 01 is pulled to the j-th wire pressing bottom 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 bottom plate 461 to complete the wire pressing, and then the j-th wire pressing bottom plate 461151 is fixed to the work station using two positioning pins 466; wherein, i=1, ..., A2; j=1, ..., B2;

[0168] Step 2: After the welding tape 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 tape 01 for the tape making part 5000.

[0169] Reference Figures 16 to 28 The tape making unit 5000 includes a straightening and clamping mechanism 5200, a positioning and cutting mechanism 5300, a tape clamping 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 strip 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 clamping mechanism 5200 is used to straighten and clamp the solder strip 01 to ensure that the solder strip 01 is accurately and stably positioned in subsequent processes. It includes a straightening and clamping frame 5210, and two solder strip clamping assemblies 5220, a wire comb 5230 and an overall solder strip clamping assembly 5240 that are sequentially arranged on the straightening and clamping frame 5210 along the X2-axis direction.

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

[0173] Each solder strip clamping assembly 5220 is used to independently clamp the solder strip 01 to ensure that each solder strip 01 can be accurately fixed, and 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 a plurality of clamping grooves are sequentially arranged on the bottom surface along the Y2 axis, and a silicone pad corresponding to the bottom surface of the first clamping block 5223 is arranged on the clamping base plate 5211 to ensure that each solder strip 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 strip pressing assemblies 5220 are staggered with each other and are used to press the solder strips 01 with odd and even numbers respectively.

[0175] The wire comb 5230 is used to guide the solder strips 01 to pass through and ensure that the solder strips 01 are arranged neatly. The top surface of the wire comb 5230 is provided with a plurality of solder strip grooves with a width of 0.2 to 1 mm to accommodate solder strips 01 of different widths.

[0176] The integral solder strip clamping assembly 5240 is used to provide additional clamping force during the solder strip 01 straightening process 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 positive positioning slot assembly.

[0178] Each floating plate 5243 is connected to the driving ends of two second clamping cylinders 5242, and both ends of the floating plate 5243 are located on the first vertical guide rail 5244. A plurality of second clamping guide rods 5245 are arranged in the middle, and a compression spring 5246 is connected to the bottom of each second clamping guide rod 5245. Two floating pressure blocks 5247 are arranged under each compression spring 5246, and each floating pressure block 5247 is used to clamp a welding strip 01. Since the friction force required for clamping and straightening the welding strip 01 is relatively large, each floating plate 5243 needs to be connected to two second clamping 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 solder strip 01 to ensure the precise arrangement of the solder strip 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 solder strip 01, and the cover plate 5248 limits the position deviation of the solder strip 01 by covering the alignment groove.

[0180] Reference Fig.21 The positioning and cutting mechanism 5300 is used to accurately position the welding tape 01 and cut it according to the 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 cutting knife assemblies 5350 and A1 positioning comb assemblies.

[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 cutting knife 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 cutting stability; 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 driving end of the cutter cylinder 5352; the cutters 5355 of the two cutter units 5351 cooperate with each other to cut off the welding strip 01 therebetween.

[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 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.

[0184] Reference Fig. 22 The solder strip clamping mechanism 5400 is used to clamp the solder strip 01 at 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 arranged on the bottom surface of the 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 one press needle unit is arranged on the bottom surface of the 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 means of a threaded connection, so as to facilitate replacement.

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

[0188] The welding strip 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, so as to facilitate maintenance.

[0189] Reference Figures 23-24 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 a standardized welding strip segment 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, and each traction assembly 5510 includes a traction base plate 5511, and a traction motor 5512, a traction guide rail 5513 (moving along the X2 axis direction) and a clamping assembly 5514 arranged on the top surface of the traction base plate 5511. The clamping assembly 5514 is arranged on the traction guide rail 5513 and is connected to the driving 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 up and down, and each clamping unit 5516 includes a mounting plate 5517, a linked cylinder 55120, a plurality of piston rods 5518 and a plurality of clamping jaws 5519. The linked cylinder 55120 is arranged on the mounting plate 5517, and the plurality of clamping jaws 5519 are respectively connected through a plurality of piston rods 5518, and the plurality of clamping jaws 5519 are arranged in sequence along the Y2 axis direction. The lower clamping jaw 5519 is arranged on the mounting plate 5517 of the lower clamping unit 5516, and cooperates with the plurality of clamping jaws 5519 of the two clamping units 5516. The plurality of clamping jaws 5519 of the two clamping units 5516 are interlaced with each other, and are used to clamp the welding strips 01 with odd and even numbers, respectively.

[0191] Reference Figures 25-26 , the support belt spacing mechanism 5600 is used to separate and arrange the welding strip 01 according to the odd and even number sequence and accurately position it, so as to provide a preset welding strip layout for subsequent welding. The support belt spacing mechanism 5600 includes a spacing base plate 5610, a first spacing motor 5620, a spacing component 5630 and A1 adsorption components 5640. The first spacing motor 5620 (linear motor, moving along the X2 axis direction) is arranged on the top surface of the spacing base plate 5610, and the spacing component 5630 is arranged thereon. The spacing component 5630 includes a second spacing motor 5631 and a second horizontal guide rail 5632 (moving along the X2 axis direction). Two adsorption components 5640 are sequentially arranged on the second horizontal guide rail 5632 along the Y2 axis and connected to the driving end of the second spacing motor 5631. The two adsorption components 5640 move along the X2 axis direction respectively below the clamping components 5514 of the two traction components 5510.

[0192] Each adsorption assembly 5640 includes two adsorption units 5641 arranged in sequence along the X2 axis, and each adsorption unit 5641 includes an adsorption base 5642, five parallel adsorption strips 5643 and a plurality of positioning bosses 5645. Each adsorption strip 5643 corresponds to a welding strip 01, and a plurality of adsorption holes 5644 are arranged on the top surface of the adsorption strip 5643. Every two positioning bosses 5645 are arranged 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 arranged inside, and the adsorption gas path is respectively connected to each adsorption hole 5644. The adsorption strips 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.

[0193] The A1 floating pressure block assembly 5241 of the integral welding strip clamping assembly 5240, the A1 cutting knife assembly 5350 of the positioning and cutting strip mechanism 5300, the A1 clamping assembly 5514 of the double-row traction mechanism 5500, and the A1 adsorption assembly 5640 of the support and spacing mechanism 5600 correspond to each other. Through the cooperation of various modules, the stable transmission and precise processing of the welding strip 01 between different stations are ensured.

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

[0195] Step 1, all the welding strips 01 are sequentially passed through the multiple welding strip grooves 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, and all the welding strips 01 are clamped by two clamping assemblies 5514, and then all the welding strips 01 are clamped by two welding strip clamping assemblies 5220 of the straightening and clamping mechanism 5200 and the overall welding strip clamping assembly 5240;

[0196] Step 2: Cut all the welding strips 01 by the two cutting knife assemblies 5350 of the positioning and cutting mechanism 5300 to form the initial position of the welding strips 01, and then correct the welding strips 01 by two positioning comb assemblies, as follows:

[0197] Step 2.1, in the two cutter units 5351 of each cutter assembly 5350, the cutter seat 5354 is driven by the cutter cylinder 5352 to move along the second vertical guide rail 5353, and 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, and the positioning comb cylinder 5362 drives the positioning plate 5364 to move on the positioning comb guide rail 5363 (moves along the Y2 axis direction), pushes the welding ribbon 01 into the gap between the steel needles, corrects the position of the welding ribbon 01, and ensures that the welding ribbon 01 is neatly arranged and parallel to the X2 axis direction;

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

[0201] Step 4, clamp all the welding strips 01 by two clamping components 5514;

[0202] Alternatively, a clamping unit 5516 of the two clamping assemblies 5514 clamps the welding strips 01 with even numbers, and a welding strip clamping assembly 5220 of the straightening and clamping mechanism 5200 clamps the welding strips 01 with odd numbers;

[0203] A clamping unit 5516 of the two clamping assemblies 5514 clamps the welding strips 01 with odd numbers, and a welding strip clamping assembly 5220 of the straightening and clamping mechanism 5200 clamps the welding strips 01 with even numbers;

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

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

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

[0207] The traction motor 5512 drives the two traction assemblies 5510 of the double-row traction mechanism 5500 to move a 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. Fig. 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 Fig.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 pressing needle assembly 5420 and the double-row pressing needle 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 tape cutting frame 5340 of the positioning tape cutting mechanism 5300 in the positive direction of the X2 axis by a preset distance 5, so that the two cutter assemblies 5350 in step 8 cut the welding tape 01 without interfering with the straightening and clamping mechanism 5200; the preset distance is 2-10 mm;

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

[0212] Step 9, move the two solder strip pressing components 5220 and the overall solder strip pressing component 5240 of the solder strip pressing mechanism 5400 toward the positive direction of the Z2 axis to release the solder strip 01;

[0213] Step 10, the two adsorption components 5640 of the tape support and spacing mechanism 5600 are moved in the positive direction of the X2 axis, and at the same time, one adsorption unit 5641 of each adsorption component 5640 adsorbs the welding tape 01 with an even or odd sequence number, and the tape making is completed to obtain a welding tape group, such as Fig. 27 , Fig.28 shown.

[0214] Reference Fig.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 arranged on the fixed bracket 610 . The moving device 620 includes a belt-carrying linear motor 621 , a belt-carrying mounting plate 622 arranged at the driving end of the belt-carrying linear motor 621 , and A1 transport units are arranged on the belt-carrying 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≥2; in this embodiment, the value of M is 4.

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

[0218] The needle pressing device 650 includes a needle pressing drive assembly, a support plate 6503, a needle pressing connecting plate 6505 and multiple spring needle pressing needles 6506. The needle pressing drive assembly includes a needle pressing cylinder 6501 and a needle pressing cylinder 6501 connecting plate; the needle pressing cylinder 6501 is arranged on a linear guide rail 6605, and its driving end is connected to the needle pressing cylinder 6501 connecting plate, a support plate 6503 is arranged on the needle pressing cylinder 6501 connecting plate, the needle pressing connecting plate 6505 is arranged below the support plate 6503, the support plate 6503 and the needle pressing connecting plate 6505 are connected by six connecting shafts 6504, the top surface of the needle pressing connecting plate 6505 is provided with an adsorption plate 401, and the bottom surface is provided with a UV lamp board 670; multiple spring needle pressing needles 6506 are arranged on the bottom surface of the needle pressing connecting plate 6505, and pass through the substrate 6701 of the UV lamp, and are used to press the welding strip 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 Fig.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 shading component. The plurality of UV lamp beads 6702 correspond to the positions of the UV glue on the battery cell 02. The shading component is used to block the UV glue that does not need to be cured, and includes a shading plate 6703 and a plurality of shading foams 6704; the shading 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 shading foams 6704 are divided into a plurality of rows, and a UV lamp bead 6702 is arranged between adjacent shading foams 6704 in each row of shading 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 substrate 6701 of the UV lamp board 670 in sequence for adsorbing the corresponding welding strip 01.

[0222] For the short welding strips on the first and last battery cells 02 in the same battery string, one group of adsorption holes can be used for adsorption respectively; for the short welding 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 groups 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 Fig.33 , Fig.35 In this embodiment, M takes a value of 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 Fig.32 , Fig.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 shading foams 6704 are used to block the UV glue from the preset position of the short solder strips / short solder strips between strings 04 on the battery cells 02.

[0226] Reference Fig.34 , Fig.35 The first group of adsorption holes 6403 and the second group of adsorption holes 6404 are used to simultaneously adsorb the short welding strips 04 between 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 string making unit 300 and the belt conveying unit 600 includes the following steps:

[0228] Step 1: The battery cell 02 that has been printed with solder paste 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 corrected in the Y1 axis direction by the feeding positioning unit 120;

[0230] The corrected and defect-free battery cell 02 is transported from the first feeding transfer unit 130 to the A1 battery cell feeding track of the second feeding transfer unit 150 through the feeding translation unit 140, and the defective battery cell 02 is transferred to the end material box through the first feeding transfer 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 A1 buffer components are full, the battery cells 02 on A1 battery cell feeding tracks are respectively transferred to A1 printing feeding tracks of the printing feeding transmission unit 210;

[0233] Step 4, determine whether the solder paste on the battery cell 02 is dried, if so, execute 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: The battery cell 02 on the A1 printing feed track is transferred to the printing positioning unit 220, and the edge of the battery cell 02 is corrected in the Y1 axis direction by the printing positioning unit 220, and then the appearance contour image of the battery cell 02 is captured by the printing visual inspection unit 230;

[0235] Step 6: The second horizontal driving device transfers the printing table 250 to the receiving position, and the A1 loading assembly of the printing loading unit 240 grabs the battery cell 02 from the printing positioning unit 220 to the printing table 250 located at the receiving position, and places the previous battery cell 02 and the next battery cell 02 in two times according to the appearance contour image of step 5;

[0236] Step 7: The second vertical driving device moves the printing table 250 in the positive direction of the Z1 axis, so that the printing table 250 is located at the printing position, and then the third vertical driving device 262 controls the height of the printing scraper 263 from the printing screen, and then the third horizontal driving device 261 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 moves it in the positive direction of the Z1 axis through the second horizontal drive device, so that the printing table 250 is located at the discharge position, and finally the battery cell 02 is lifted from the bottom by the material transport fork and transported to the A1 printing discharge track of the printing discharge transmission unit 270;

[0238] Step 9: The second PL detection unit 280 detects defects of the battery cell 02, manually determines whether to remove the defective battery cell 02, and fills the vacancy by grabbing a non-defective battery cell 02;

[0239] Step 10, the first moving sub-mechanism 311 of the A1 string-making horizontal driving device respectively transports the battery cell 02 on the A1 printing discharge track to the string-making positioning unit 320, and the edge of the battery cell 02 is corrected in the Y1 axis direction by the string-making positioning unit 320, and then the appearance contour image of the battery cell 02 is captured by the string-making visual detection unit 350;

[0240] According to the requirements of different battery strings, determine whether the battery cell 02 needs to be rotated 180°. 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 serial transmission track of the serial transmission unit 330, and places two battery cells 02 in batches according to the appearance outline image of step 10;

[0243] Step 13, the tape conveyor 600 places the solder tape group on the A1 battery cells 02 connected in series on the transmission track, and chooses whether to pre-cure the solder tape 01 by the tape conveyor 600 according to the beat and the flatness of the solder tape 01. If the flatness of the solder tape 01 is slightly poor, pre-curing can be performed to improve the placement effect of the solder tape 01;

[0244] Step 13.1, if it is necessary to adsorb the long welding strips 03 on the battery sheets 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 welding strip on the first battery cell 02 or the last battery cell 02 of the battery string, the vacuum generator 630 corresponding to one group of adsorption holes is started;

[0246] If it is necessary to simultaneously adsorb the short welding strip 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, and the lifting motor 6601 drives the screw rod 6602 to drive the adsorption plate 401 to descend, and the linear guide rail 6605 ensures that the adsorption plate 401 moves downward smoothly;

[0248] Step 13.3, each suction cup 6402 on the suction plate 401 suctions 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 drive the conveyor mounting plate 622 to move horizontally by the conveyor linear motor 621 to move the welding ribbon 01 to the top of the battery cell 02;

[0250] Step 13.5, the lifting device 660 drives the adsorption plate 401 to descend, and each welding ribbon 01 is placed at a preset position on the battery cell 02;

[0251] Step 13.6, start the needle pressing device 650, and the needle pressing cylinder 6501 drives each spring pressing needle 6506 to press the corresponding solder strip 01 onto the UV glue on the battery cell 02; the needle pressing device 650 provides uniform pressure through multiple spring pressing needles 6506 to ensure good contact between the solder strip 01, the UV glue and the battery cell 02; after the pressing is completed, the solder strip 01 has been stably maintained at the designed position of the UV glue on the battery cell 02;

[0252] Step 13.7, according to the beat and the flatness of the welding strip 01, select whether to pre-cure by the strip conveyor 600, if yes, execute step 13.8, otherwise directly execute 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 strip 01 and the battery cell 02; and use the shading plate 6703 and multiple shading foams 6704 to block the area that does not need to be cured, ensuring that the UV light only acts on the target position;

[0254] Step 13.9, close the vacuum generator 630 opened in step 13 to release the adsorption state between the adsorption plate 401 and all the welding strips 01, and 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 start a new round of operations until the welding ribbons 01 of all the battery cells 02 are transported;

[0256] Step 14: The UV curing unit 340 first compresses and cures the battery cell 02, and then cures the UV glue on the battery cell 02, so as to achieve an effective fixed connection between the welding ribbon 01 and the battery cell 02, and complete the BC battery series 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 stringing 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 direction; 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) which are sequentially arranged along the X1 axis direction; the printing positioning unit (220) is used to correct the battery sheet (02), the printing unit (260) prints UV glue on the corrected battery sheet (02), and the second PL detection unit (280) is used to detect whether the printed battery sheet (02) has defects; The stringing section (300) comprises a serial loading unit (310), and a stringing positioning unit (320) and a serial transmission unit (330) arranged in sequence along the X1 axis direction; the serial 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 serial transmission unit (330); The tape unwinding unit (400) is used to provide the welding tape (01) for the tape making unit (5000); The strip making part (5000) is used to make welding strip segments of preset length and to lay out the welding strip segments to obtain welding strip groups; The belt conveyor (600) is used to place the welding belt group on the battery sheet (02) of the serial transmission unit (330); The serial transmission unit (330) is provided with a UV curing unit (340) for irradiating the battery sheet (02) and the welding ribbon group with UV light to form a battery string.

2. A BC battery string welding machine according to claim 1, characterized in that: The battery feeding section (100) further includes a feeding translation unit (140); The battery feed transmission unit comprises 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 comprises a printing feed transmission unit (210), a printing table (250) and a printing discharge transmission unit (270) which are sequentially arranged along the X1 axis direction, as well as a printing visual detection 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 front end of the printing feed transmission unit (210) is connected to the second feed transmission unit (150), and the rear end is connected to the printing positioning unit (220); 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 capture 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 grab it 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 string making section (300) further comprises a string making visual detection unit (350) located above the string making positioning unit (320); the string making visual detection unit (350) is used to capture an appearance contour image of the battery cell (02) aligned by the string making positioning unit (320).

3. A 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 transports 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 solder paste on the battery cell (02); The printing table (250) is arranged on the frame (10) via a table top driving device, and the printing table (250) has a material receiving position, a printing position, and a material discharging position; the table top driving device comprises a second horizontal driving device that moves along the X1 axis, and a second vertical driving device that is arranged at a driving end of the second horizontal driving device and moves along the Z1 axis, and the printing table (250) is connected to the driving end of the second vertical driving device; The second horizontal drive device is used to transfer the printing table (250) to a material receiving position or a material discharging position; the second vertical drive device is used to transfer 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 material 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 a battery cell (02) on a printing table (250) located at a 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 a driving end of the third horizontal driving device (261) and moves along the Z1 axis, and a printing scraper (263) that is arranged at a 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 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 material discharging transmission unit (270) is connected to the printing table (250) located at the material discharging position; The serial loading unit (310) comprises A1 string-making horizontal driving devices which move along the X1 axis and correspond to A1 printing discharge tracks respectively. A first moving sub-mechanism (311) and a second moving sub-mechanism (312) are sequentially arranged at the driving end of each string-making horizontal driving device along the X1 axis direction. The first moving sub-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 moving sub-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 moving sub-mechanism (311) and the second moving sub-mechanism (312) are both provided with two Z1-axis moving cylinders corresponding to the previous battery cell (02) and the next battery cell (02) respectively. The first moving sub-mechanism (311) is also provided with a battery cell rotating mechanism (313) for rotating the battery cell (02) according to the appearance contour image taken by the stringing visual detection unit (350); The serial transmission unit (330) is used to transmit A1 battery strings simultaneously, and comprises A1 serial transmission tracks respectively corresponding to A1 string-making horizontal driving devices.

4. A BC battery string welding machine 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 (472); 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) which are 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) along the 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 sleeved 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 each second tape winding shaft (432) is sleeved with B2 passing wheels (433); 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 arranged 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 a wire passing slot plate (462), a wire pressing block unit, and a wire pressing cover plate (465) are sequentially arranged on its upper surface along the length direction of the welding strip (01); a plurality of wire grooves are arranged on the wire passing slot 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 one by one; the wire pressing cover plate (465) is used to press the welding strip (01) onto 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 arranged between the tape winding unit (430) and the tape storage unit (440), and a plurality of wire passing wheel groups (450) are arranged 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 arranged in sequence along the axis.

5. A BC battery string welding machine according to claim 4, characterized in that: Each of the rotating shafts (422) includes B2 unwinding shafts which are sequentially sleeved from the inside to the outside and whose lengths decrease, the first solder strip unwinding drum (423) is sleeved on the portion of the first unwinding shaft (425) extending from the second unwinding shaft (426), and the remaining solder strip unwinding drums (423) are similar in sequence; two adjacent unwinding shafts are connected via a rotating bearing (4221); The width of each of the wire grooves is greater than the width of the welding strip (01) by 0-3 mm; A pressing block (467) adapted to the wire groove is arranged 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 bottom plate (461).

6. A BC battery string welding machine according to claim 5, characterized in that: The strip making unit (5000) comprises a straightening and pressing mechanism (5200), a positioning and strip 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 welding strip (01); The straightening and pressing mechanism (5200) is used to straighten and press the welding strip (01), and comprises a straightening and pressing frame (5210), two welding strip pressing assemblies (5220) arranged on the straightening and pressing frame (5210) in sequence 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 strip (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 the length, and comprises a positioning and cutting frame (5340) moving along the X2 axis direction, and the positioning and cutting frame (5340) is provided with A1 cutter assemblies (5350) arranged along the Y2 axis direction and A1 positioning comb assemblies arranged along the Y2 axis direction; each cutter assembly (5350) and its corresponding positioning comb assembly are arranged in sequence along the X2 axis direction, 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 clamping mechanism (5400) is used to clamp the solder strip (01) at a specified position, and comprises a plurality of pressure needle units arranged in sequence along the X2 axis, each pressure needle unit comprises a plurality of pressure needles (5405) arranged in sequence along the Y2 axis direction, and each pressure 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 according to a preset length, and provide the welding strip segment required for subsequent processing, and comprises A1 clamping components (5514) arranged in sequence along the Y2 axis and moving along the X2 axis direction; each of the clamping components (5514) comprises 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 numbers; The tape support spacing mechanism (5600) is used to separate and arrange the welding tapes (01) according to odd and even number sequences and to position them, so as to provide a preset welding tape layout for subsequent welding, and comprises A1 adsorption components (5640) arranged in sequence along the Y2 axis and moving in the direction of the X2 axis; each adsorption component (5640) comprises two adsorption units (5641) arranged in sequence along the X2 axis, and the A1 adsorption components (5640) are respectively used to move in the direction of 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 tapes (01) with odd and even number sequences.

7. A BC battery stringer according to claim 6, characterized in that: The straightening and pressing frame (5210) is provided with a pressing bottom plate (5211) on the X2Y2 plane; Each of the solder strip clamping assemblies (5220) comprises a first clamping block (5223) that moves along the Z2 axis; the length direction of the first clamping block (5223) is parallel to the Y2 axis, and a plurality of clamping grooves are sequentially arranged on the bottom surface along the Y2 axis, and a silicone pad corresponding to the bottom surface of the first clamping block (5223) is arranged on the clamping bottom plate (5211); the plurality of clamping grooves of the two solder strip clamping assemblies (5220) are staggered with each other, and are respectively used to clamp the solder strips (01) with odd and even numbers; The integral welding strip clamping assembly (5240) comprises A1 floating clamping block assemblies (5241) arranged in sequence along the Y2 axis direction above the clamping bottom plate (5211); each of the floating clamping block assemblies (5241) comprises a floating plate (5243) moving along the Z2 axis direction, and a positive position slot assembly; a plurality of second clamping guide rods (5245) are arranged in the middle of the floating plate (5243), a compression spring (5246) is connected to the bottom of each second clamping guide rod (5245), and a spring (5246) is arranged below each compression spring (5246). At least one floating pressing block (5247) is provided, and each floating pressing block (5247) is used to press a welding strip (01); the floating plate (5243) and the positioning groove assembly are arranged in sequence along the X2 axis direction, and the positioning groove assembly is used to position the welding strip (01), and comprises a plurality of positioning grooves arranged in sequence on the pressing bottom 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) moving along the Y2 axis direction, and the two cutters (5355) cooperate with each other to cut off the welding strip (01) therebetween; Each of the positioning comb components comprises two positioning comb units (5361) corresponding to the two cutting units (5351), each positioning comb unit (5361) comprises a positioning plate (5364) moving along the Y2-axis direction, a plurality of positioning steel needles (5365) are arranged 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 clamping mechanism (5400) further comprises a double-row pressure needle assembly (5410) and a single-row pressure needle assembly (5420) which are 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) which moves along the Z2 axis; the double-row pressure needle assembly (5410) is used for simultaneously clamping 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 clamping 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 of the pressure needles (5405) is fixed to the corresponding pressure needle mounting plate (5404) by means of a threaded connection; Each of the clamping units (5516) comprises a mounting plate (5517) and a linked cylinder (55120), wherein the linked cylinder (55120) is arranged on the mounting plate (5517) and is respectively connected to the plurality of clamping jaws (5519) through a plurality of piston rods (5518), and the plurality of clamping jaws (5519) are arranged in sequence along the Y2 axis; the lower clamping jaw (5519) is arranged on the mounting plate (5517) of the lower clamping unit (5516); Each of the adsorption units (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 arranged on the top surface of each adsorption bar (5643), and every 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 staggered with each other and are respectively used for adsorbing welding strips (01) with odd and even numbers.

8. A BC battery stringer according to claim 7, characterized in that: The conveyor belt unit (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 a 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, and the row direction is 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; and every 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. A BC battery stringer according to claim 8, characterized in that: The value of M is 4; The four groups of adsorption holes are respectively a first group of adsorption holes (6403), a second group of adsorption holes (6404), a third group of adsorption holes (6405), and a 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 welding strips (03) on the first and second battery cells (02) of three battery cells (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 welding strips (03) on the second and third battery cells (02) of three battery cells (02) arranged in sequence.

10. A BC battery stringer according to claim 9, characterized in that: The conveyor belt portion (600) is also used to use UV light to irradiate the UV glue on the battery sheet (02) to achieve UV pre-curing; the bottom surface of the pressure pin connecting plate (6505) is provided with a UV lamp board (670); the UV lamp board (670) includes a substrate (6701) provided on the bottom surface of the pressure pin connecting plate (6505), a plurality of UV lamp beads (6702) provided on the bottom surface of the substrate (6701), and a shading component; the shading component includes a shading plate (6703) and a plurality of shading foams (6704); the shading 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 sheet (02); the plurality of shading foams (6704) are divided into a plurality of rows, and a UV lamp bead (6702) is provided between adjacent shading foams (6704) in each row of shading 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 strip clamping 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 repaired.

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