Belt manufacturing device and method for BC battery welding

Abstract

The invention relates to a welding strip preparation device and method, in particular to a strip preparation device and method for BC battery welding, and aims to solve the problems of welding precision, equipment compatibility, production efficiency, material waste and the like which still face many challenges in a series welding process of BC batteries. The strip manufacturing device for BC battery welding comprises a straightening and pressing mechanism, a positioning and strip cutting mechanism, a welding strip pressing mechanism, a double-row traction mechanism and a supporting strip spacing mechanism. Through modular design, independent traction and spaced arrangement of odd-numbered solder strips and even-numbered solder strips are supported, and compared with a traditional whole-string solder strip manufacturing mode, the device can flexibly adapt to battery strings with different lengths, so that the universality and compatibility of equipment are improved. Moreover, the accurate control of the adsorption assembly and the welding strip pressing mechanism ensures the flexible adjustment of the length and layout of the welding strip, so that the equipment can meet the production requirements of various BC batteries.

Description

Technical Field

[0001] The invention relates to a welding strip preparation device and method, and in particular to a strip preparation device and method for BC battery welding. Background Art

[0002] With the continuous development of photovoltaic industry technology, especially in the application of back contact battery (BC battery) technology, the string welding process has gradually become a key technical link. The unique structural design of BC batteries - all electrodes are located on the back of the battery - provides advantages for improving battery efficiency, but also brings new manufacturing challenges. Especially in the string welding process, the welding on the back of the battery, the fixing method of the welding ribbon and its position accuracy have a crucial impact on the quality and production efficiency of the final product.

[0003] There are many options for BC battery ribbon making processes, each of which has different advantages and disadvantages for different application scenarios. The traditional whole string handling method requires the welding ribbon to be made at one time, and the whole string of welding ribbons must be transported and welded by equipment. Although this method can meet the needs in some specific applications, due to the limitations of the equipment, it is not compatible with battery strings of different lengths, and if a group of welding ribbons fails, the entire welding ribbon string needs to be remade, resulting in great waste.

[0004] Another common ribbon making process is to pull the odd-numbered ribbons and even-numbered ribbons separately and place them directly on the battery cells. This method has low production efficiency and may affect the overall quality of the battery due to the easy deviation of the ribbon placement accuracy.

[0005] In the market, some BC battery string welding uses infrared welding technology. This technology can achieve welding through infrared heating, thereby effectively reducing the operating cost of the equipment. However, infrared welding usually relies on the production of the entire string of welding ribbons, which makes its equipment compatibility poor. Once the welding ribbon fails, the entire welding ribbon string needs to be remade, resulting in a large waste of materials.

[0006] Therefore, the string welding process of BC cells still faces many challenges, including welding accuracy, equipment compatibility, production efficiency, and material waste. Solving these problems is crucial to improving the production efficiency of BC cells, reducing costs, and enhancing the market competitiveness of photovoltaic cells. Summary of the invention

[0007] The purpose of the present invention is to solve the problems of insufficient welding accuracy, poor equipment compatibility, low production efficiency and material waste in the string welding process of BC batteries, and to provide a belt making device and method for BC battery welding.

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

[0009] A strip making device for BC battery welding, which is special in that it includes a straightening and pressing mechanism, a positioning and cutting mechanism, a strip pressing mechanism, a double-row traction mechanism, and a strip support and spacing mechanism which are sequentially arranged along the strip transmission direction;

[0010] The straightening and clamping mechanism is used to straighten and clamp the welding strip to ensure that the welding strip is accurately and stably positioned in the subsequent process, and comprises a straightening and clamping frame, two welding strip clamping assemblies arranged on the straightening and clamping frame in sequence along the X-axis direction, a wire comb and an overall welding strip clamping assembly; the X-axis direction is the length direction of the welding strip, and the welding strip transmission direction is the positive direction of the X-axis; 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 neatly arranged; the overall welding strip clamping assembly is used to clamp all welding strips; the straightening and clamping mechanism ensures the independent clamping and overall stability of each welding strip through the combination of the welding strip clamping assembly and the overall welding strip clamping assembly;

[0011] The positioning and cutting mechanism is used to accurately position the welding strip and cut it according to the length. It includes a positioning and cutting frame moving along the X-axis direction, and the positioning and cutting frame is provided with A cutter assemblies arranged along the Y-axis direction and A positioning comb assemblies arranged along the Y-axis direction; each cutter assembly and its corresponding positioning comb assembly are arranged in sequence along the X-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≥1;

[0012] The solder strip clamping mechanism is used to clamp the solder strip at a specified position and provide sufficient pressure for subsequent processing, and includes a plurality of pressure pin units arranged in sequence along the X-axis, each pressure pin unit includes a plurality of pressure pins arranged in sequence along the Y-axis, and each pressure pin corresponds to a solder strip; the Y-axis conforms to a left-hand rectangular coordinate system with the positive direction of the Z-axis being vertically upward;

[0013] 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 clamping components arranged in sequence along the Y axis and moving along the X axis; each of the clamping components includes a lower clamping jaw and two clamping units; the two clamping units are stacked up and down, and the multiple clamping jaws of the two clamping units are staggered, respectively used to cooperate with the lower clamping jaw to clamp the welding strips with odd and even numbers;

[0014] The tape support spacing mechanism is used to separate and arrange the welding strips according to odd and even sequences and position them, providing a preset welding strip layout for subsequent welding. It includes A adsorption components arranged in sequence along the Y axis and moving along the X axis direction, and the A adsorption components are respectively used to move along the X axis direction under the A clamping components; each adsorption component includes two adsorption units arranged in sequence along the X axis, and the two adsorption units are respectively used to adsorb welding strips with odd and even sequence numbers.

[0015] Furthermore, a pressing bottom plate is provided on the straightening and pressing frame in the XY plane;

[0016] Each of the welding strip clamping assemblies comprises a first clamping cylinder located below the clamping base plate, a first clamping block located above the clamping base plate, and two first clamping guide rods; the length direction of the first clamping block is parallel to the Y axis, and a plurality of clamping grooves are sequentially arranged on the bottom surface along the Y axis, and a silicone pad corresponding to the bottom surface of the first clamping block is arranged on the clamping base plate; the upper ends of the two first clamping guide rods are respectively connected to the two ends of the first clamping block, and the lower ends pass through the clamping base plate to connect to the driving end of the first clamping cylinder;

[0017] The multiple pressing grooves of the two welding strip pressing assemblies are staggered with each other, and are used to press the welding strips with odd and even numbers respectively;

[0018] The top surface of the wire comb is provided with a plurality of welding strip grooves, and each welding strip groove corresponds to a welding strip.

[0019] Further, the integral welding strip clamping assembly comprises A floating clamping block assemblies arranged in sequence along the Y axis above the clamping bottom plate;

[0020] Each of the floating pressure block assemblies includes a floating plate, at least one second clamping cylinder, a first vertical guide rail, and a positive position slot assembly;

[0021] The floating plate is connected to the driving end of the second clamping cylinder, and both ends of the floating plate are located on the first vertical guide rail. A plurality of second clamping guide rods are arranged in the middle, and a compression spring is connected to the bottom of each second clamping guide rod. At least one floating pressure block is arranged under each compression spring, and each floating pressure block is used to clamp a welding strip. By using the floating plate and the compression spring, slight errors of the welding strip can be accommodated to avoid damage to the welding strip.

[0022] The floating plate and the positioning groove assembly are sequentially arranged along the X-axis. The positioning groove assembly is used to position the welding strip, and includes a plurality of positioning grooves sequentially arranged on the pressing bottom plate along the Y-axis, and a cover plate located above the plurality of positioning grooves; each positioning groove corresponds to a welding strip, and the cover plate limits the position deviation of the welding strip by covering the positioning groove;

[0023] The width of the welding strip groove on the top surface of the wire comb is 0.2-1 mm.

[0024] Furthermore, the positioning and cutting mechanism also includes a positioning and cutting bottom plate, a positioning and cutting motor, and a first horizontal guide rail;

[0025] The positioning belt cutting motor and the first horizontal guide rail are respectively arranged on the bottom surface and the top surface of the positioning belt cutting bottom plate, and the positioning belt cutting frame is arranged on the first horizontal guide rail and connected to the driving end of the positioning belt cutting motor;

[0026] 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 cylinder arranged on a positioning and cutting frame, a second vertical guide rail, a cutter seat, and a cutter arranged on the cutter seat, wherein the cutter seat is located on the second vertical guide rail and connected to the drive end of the cutter cylinder; the two cutter seats are used to move toward or away from each other under the action of the cutter cylinder; the cutters of the two cutter units cooperate with each other to cut off the welding strip between them;

[0027] Each of the positioning comb assemblies comprises two positioning comb units corresponding to the two cutting knife units, and each positioning comb unit comprises a positioning comb cylinder, a positioning comb guide rail, and a positioning plate arranged on a positioning cutting frame; the driving end of the positioning comb cylinder is connected to the positioning plate arranged on the positioning comb guide rail to drive the positioning plate to move along the Y-axis direction, and a plurality of positioning steel needles are arranged on the bottom surface of the positioning plate;

[0028] The multiple 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 the welding strip to align the welding strip.

[0029] Further, the welding strip clamping mechanism includes a double-row pressure needle assembly and a single-row pressure needle assembly sequentially arranged along the X-axis, and the single-row pressure needle assembly and the double-row pressure needle assembly both include a pressure needle motor, a lead screw, a third vertical guide rail, and a pressure needle mounting plate; the pressure needle mounting plate is arranged on the third vertical guide rail and is connected to the driving end of the pressure needle motor through a lead screw;

[0030] The double-row pressure needle assembly is used to simultaneously press multiple solder strips, and two pressure needle units are arranged on the bottom surface of the pressure needle mounting plate; the single-row pressure needle assembly is used to assist the double-row pressure needle assembly in pressing multiple solder strips, and one pressure needle unit is arranged on the bottom surface of the pressure needle mounting plate; the double-row pressure needle assembly and the single-row pressure needle assembly can be operated independently or jointly, and can flexibly adapt to the processing requirements of solder strips of different lengths;

[0031] Each of the pressure pins is fixed on the corresponding pressure pin mounting plate by means of a threaded connection.

[0032] Furthermore, 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 repaired. The unified driving design of the maintenance cylinder reduces manual intervention in the maintenance process and improves efficiency.

[0033] Furthermore, the double-row traction mechanism further comprises A traction assemblies arranged in sequence along the Y axis, each traction assembly comprising a traction base plate, and a traction motor, a traction guide rail and the clamping assembly arranged on the top surface of the traction base plate; the clamping assembly is arranged on the corresponding traction guide rail and connected to the driving end of the traction motor;

[0034] Each of the clamping units comprises a mounting plate and a linked cylinder, wherein the linked cylinder is arranged on the mounting plate and is respectively connected to the plurality of clamping claws through a plurality of piston rods, and the plurality of clamping claws are arranged in sequence along the Y-axis direction;

[0035] The lower clamping jaw is arranged on a mounting plate of the lower clamping unit.

[0036] Furthermore, the belt-supporting spacing mechanism includes a spacing bottom plate, a first spacing motor arranged on the top surface of the spacing bottom plate, and a spacing component arranged on the first spacing motor; the spacing component includes a second spacing motor and a second horizontal guide rail;

[0037] The A adsorption components are arranged on the second horizontal guide rail and connected to the second spacing motor driving end;

[0038] Each of the adsorption units includes an adsorption base, multiple adsorption strips and multiple positioning bosses. Each adsorption strip corresponds to a welding strip. The top surface of each adsorption strip is provided with multiple adsorption holes. Every two positioning bosses are symmetrically arranged on both sides of an adsorption hole to assist in positioning the welding strip. The adsorption base is connected to the driving end of the second spacing motor, and an adsorption gas path is arranged inside, and the adsorption gas path is respectively connected to each adsorption hole. 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. The precise movement of the adsorption component is achieved through the coordinated drive of the first spacing motor and the second spacing motor; and the combination of the adsorption strip and the positioning boss further ensures the precise positioning of the welding strip.

[0039] At the same time, the present invention also provides a method for making a belt for BC battery welding, using the above-mentioned belt making device for BC battery welding, which is special in that it includes the following steps:

[0040] Step 1, all the welding strips pass through the wire comb, the corresponding cutter assembly, and the corresponding positioning comb assembly 3 in sequence, and all the welding strips are clamped by A clamping assemblies, and then all the welding strips are clamped by two welding strip clamping assemblies and the overall welding strip clamping assembly;

[0041] Step 2: Cut all the welding strips by using A cutting knife components of the positioning and cutting mechanism to form the initial position of the welding strips, and then straighten the welding strips by using A positioning comb components;

[0042] Step 3, make A clamping components release all the welding strips, and then move to the initial position of the welding strips;

[0043] Step 4: Clamp all the solder strips using A clamping components;

[0044] Alternatively, a clamping unit of the A clamping assemblies is used to clamp the welding strips with even numbers, and a welding strip clamping assembly of the straightening and clamping mechanism is used to clamp the welding strips with odd numbers;

[0045] A clamping unit of the A clamping assemblies clamps the welding strips with odd numbers, and a welding strip clamping assembly of the straightening and clamping mechanism clamps the welding strips with even numbers;

[0046] Step 5, move A clamping components in the positive direction of the X-axis by a preset distance, and make the support belt spacing mechanism be located below the welding belt;

[0047] Step 6: Press down part or all of the pin pressing units on the solder strip pressing mechanism;

[0048] Step 7, move the positioning tape cutting frame of the positioning tape cutting mechanism in the positive direction of the X-axis by a preset distance, so that the cutting knife assembly in step 8A cuts the welding tape;

[0049] Step 8: Move the two solder strip clamping assemblies and the overall solder strip clamping assembly in the positive direction of the Z axis to loosen the solder strip;

[0050] Step 9, move A adsorption components in the positive direction of the X-axis, and at the same time, one adsorption unit of each adsorption component adsorbs the welding strip with an even or odd sequence number to complete the strip making.

[0051] Furthermore, the step 2 is specifically as follows:

[0052] Step 2.1, in the two cutter units of each cutter assembly, the cutter seat is driven by the cutter cylinder to move along the second vertical guide rail, and the two cutters move toward each other to cut off all the welding strips, forming the initial position of the welding strips;

[0053] Step 2.2, the cut welding ribbon automatically slides into the corresponding positioning comb assembly area, and the positioning comb cylinder drives the positioning plate to move along the Y-axis direction on the positioning comb guide rail, pushing the welding ribbon into the gap between the steel needles, correcting the position of the welding ribbon, and ensuring that the welding ribbon is arranged neatly and parallel to the X-axis direction.

[0054] Compared with the prior art, the present invention has the following beneficial effects:

[0055] (1) The present invention provides a strip making device for BC battery welding, including a straightening and clamping mechanism, a positioning and cutting mechanism, a strip clamping mechanism, a double-row traction mechanism, and a strip spacing mechanism; the present invention supports the independent traction and spacing arrangement of odd-numbered strips and even-numbered strips through modular design. Compared with the traditional whole-string strip making method, it can flexibly adapt to battery strings of different lengths, thereby improving the versatility and compatibility of the equipment. In addition, the precise control of the adsorption component and the strip clamping mechanism ensures the flexible adjustment of the strip length and layout, so that the equipment can adapt to various BC battery production requirements.

[0056] (2) The present invention uses the coordinated work of the straightening and clamping mechanism and the tape-supporting and spacing mechanism to accurately separate and arrange the welding tapes in an odd-even sequence, eliminating the problem of welding tape placement deviation that may occur in the traditional separate traction method. In addition, the high-precision cutting capability of the positioning and cutting mechanism and the stable traction function of the double-row traction mechanism further ensure the size consistency and position accuracy of the welding tapes, thereby improving the overall quality of battery string welding.

[0057] (3) The double-row traction mechanism and the support belt spacing mechanism of the present invention support the synchronous traction and spacing arrangement of multiple welding ribbons, which significantly improves the production efficiency compared with the traditional separate traction method; and the one-to-one correspondence design between the modules (such as the linkage between the positioning and cutting mechanism and the traction mechanism, and the support belt spacing mechanism) realizes efficient automated operation, reduces manual intervention, and shortens the production cycle.

[0058] (4) The multi-level clamping and positioning design of the straightening and clamping mechanism, the welding strip clamping mechanism and the supporting strip spacing mechanism of the present invention ensures that the welding strip is always in a controlled state during the processing, which greatly reduces the process problems caused by welding strip deviation; and the modular design minimizes the impact of failures in each link on the entire production process, thereby improving the reliability and stability of the overall system.

[0059] (5) The present invention provides a method for making strips for BC battery welding, which realizes the precise straightening, spacing, cutting and positioning of the welding strips, supports the independent processing and cross layout of odd and even welding strips, and combines the automated traction, adsorption and pressing operations to flexibly adapt to the welding requirements of BC batteries of different specifications. The method effectively improves the layout accuracy and production efficiency of the welding strips, reduces material waste, reduces operation and maintenance costs, and has high reliability and wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 A front view of an embodiment of a tape making device for BC battery welding according to the present invention;

[0061] Figure 2 A top view of an embodiment of the present invention;

[0062] Figure 3A schematic diagram of an axonometric view of an embodiment of the present invention Figure 1 ;

[0063] Figure 4 A schematic diagram of an axonometric view of an embodiment of the present invention Figure 2 ;

[0064] Figure 5 The structure diagram of the straightening and pressing mechanism in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0065] Figure 6 The structure diagram of the straightening and pressing mechanism in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0066] Figure 7 It is a structural schematic diagram of a positioning and cutting belt mechanism in an embodiment of the present invention;

[0067] Figure 8 It is a structural schematic diagram of a welding strip pressing mechanism in an embodiment of the present invention;

[0068] Fig. 9 It is a structural schematic diagram of a double-row traction mechanism in an embodiment of the present invention;

[0069] Fig.10 It is a structural schematic diagram of a clamping assembly in an embodiment of the present invention;

[0070] Fig.11 It is a structural schematic diagram of the belt support and spacing mechanism in an embodiment of the present invention;

[0071] Fig.12 It is a structural schematic diagram of an adsorption unit in an embodiment of the present invention;

[0072] Fig.13 This is a schematic diagram of the structure of a long welding strip between two battery cells manufactured in Example 1 of a strip manufacturing method for BC battery welding of the present invention;

[0073] Fig.14 This is a schematic diagram of the structure of the short welding strips between strings made in Example 2 of the present invention.

[0074] The following are the descriptions of the reference numerals:

[0075] 01-welding strip;

[0076] 200-straightening and clamping mechanism; 210-straightening and clamping frame; 211-clamping bottom plate; 220-welding strip clamping assembly; 221-first clamping cylinder; 222-first clamping guide rod; 223-first clamping block; 230-thread comb; 240-integral welding strip clamping assembly; 241-floating clamping block assembly; 242-second clamping cylinder; 243-floating plate; 244-first vertical guide rail; 245-second clamping guide rod; 246-compression spring; 247-floating clamping block; 248-cover plate;

[0077] 300-positioning tape cutting mechanism; 310-positioning tape cutting bottom plate; 320-positioning tape cutting motor; 330-first horizontal guide rail; 340-positioning tape cutting frame; 350-cutter assembly; 351-cutter unit; 352-cutter cylinder; 353-second vertical guide rail; 354-cutter seat; 355-cutter; 361-positioning comb unit; 362-positioning comb cylinder; 363-positioning comb guide rail; 364-positioning plate; 365-positioning steel needle;

[0078] 400-welding strip clamping mechanism; 401-pressing needle motor; 402-lead screw; 403-third vertical guide rail; 404-pressing needle mounting plate; 405-pressing needle; 410-double-row pressing needle assembly; 420-single-row pressing needle assembly; 430-maintenance cylinder;

[0079] 500-double-row traction mechanism; 510-traction assembly; 511-traction base plate; 512-traction motor; 513-traction guide rail; 514-gripping assembly; 515-lower clamping jaw; 516-gripping unit; 517-mounting plate; 518-piston rod; 519-clamping jaw; 5120-linked cylinder;

[0080] 600-belt spacing mechanism; 610-spacing base plate; 620-first spacing motor; 630-spacing assembly; 631-second spacing motor; 632-second horizontal guide rail; 640-adsorption assembly; 641-adsorption unit; 642-adsorption base; 643-adsorption bar; 644-adsorption hole; 645-positioning boss. DETAILED DESCRIPTION

[0081] The present invention will be further described below in conjunction with the accompanying drawings and exemplary embodiments.

[0082] Reference Figures 1 to 4 A tape making device for BC battery welding includes a straightening and pressing mechanism 200, a positioning and cutting tape mechanism 300, a welding tape pressing mechanism 400, a double-row traction mechanism 500 and a tape support and spacing mechanism 600.

[0083] For ease of understanding, the coordinate system is defined as follows: the length direction of the welding strip 01 is the X-axis direction, the vertical upward direction is the positive direction of the Z-axis, and the Y-axis conforms to the left-hand rectangular coordinate system.

[0084] Reference Figures 5-6 The straightening and clamping mechanism 200 is used to straighten and clamp the welding strip 01 to ensure that the welding strip 01 is accurately and stably positioned in subsequent processes. It includes a straightening and clamping frame 210, and two welding strip clamping assemblies 220, a wire comb 230 and an overall welding strip clamping assembly 240 arranged on the straightening and clamping frame 210 in sequence along the X-axis direction.

[0085] A pressing base plate 211 is provided on the straightening and pressing frame 210 on the XY plane. The pressing base plate 211 is used to fix other components and provide a working plane.

[0086] Each solder strip clamping assembly 220 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 221, two first clamping guide rods 222 and a first clamping block 223; the first clamping cylinder 221 and the first clamping block 223 are respectively located below and above the clamping base plate 211, the length direction of the first clamping block 223 is parallel to the Y-axis, and a plurality of clamping grooves are sequentially arranged on the bottom surface along the Y-axis, and a silicone pad corresponding to the bottom surface of the first clamping block 223 is arranged on the clamping base plate 211 to ensure that each solder strip 01 can be independently clamped; the upper ends of the two first clamping guide rods 222 are respectively connected to the two ends of the first clamping block 223, and the lower ends pass through the clamping base plate 211 to connect to the driving end of the first clamping cylinder 221.

[0087] The multiple pressing grooves of the two solder strip pressing assemblies 220 are staggered with each other and are used to press the solder strips 01 with odd and even numbers respectively.

[0088] The wire comb 230 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 230 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.

[0089] The integral solder strip clamping assembly 240 is used to provide additional clamping force during the solder strip 01 straightening process to further stabilize the position of the solder strip 01, and includes A floating clamping block assemblies 241 arranged in sequence along the Y axis above the clamping bottom plate 211. A≥1, and in this embodiment, A is 2.

[0090] Each floating pressure block assembly 241 includes a floating plate 243, two second clamping cylinders 242, a first vertical guide rail 244, a plurality of second clamping guide rods 245, a plurality of compression springs 246, a plurality of floating pressure blocks 247, and a positive positioning slot assembly.

[0091] Each floating plate 243 is connected to the driving ends of two second clamping cylinders 242, and both ends of the floating plate 243 are located on the first vertical guide rail 244. A plurality of second clamping guide rods 245 are arranged in the middle, and a compression spring 246 is connected to the bottom of each second clamping guide rod 245. Two floating pressure blocks 247 are arranged under each compression spring 246, and each floating pressure block 247 is used to clamp a welding strip 01. Because the friction force required for clamping and straightening the welding strip 01 is relatively large, each floating plate 243 needs to be connected to two second clamping cylinders 242 to provide sufficient positive pressure.

[0092] The floating plate 243 and the alignment groove assembly are arranged in sequence along the X-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 211 along the Y-axis, and a cover plate 248 located above the plurality of alignment grooves; each alignment groove corresponds to a solder strip 01, and the cover plate 248 limits the position deviation of the solder strip 01 by covering the alignment groove.

[0093] Reference Figure 7 The positioning and cutting mechanism 300 is used to accurately position the welding tape 01 and cut it according to the length. It includes a positioning and cutting base plate 310, a positioning and cutting motor 320, a first horizontal guide rail 330, a positioning and cutting frame 340, A (two) cutter assemblies 350 and A (two) positioning comb assemblies.

[0094] The positioning tape cutting motor 320 and the first horizontal guide rail 330 (moving along the X-axis direction) are respectively arranged on the bottom and top surfaces of the positioning tape cutting base plate 310, and the positioning tape cutting frame 340 is arranged on the first horizontal guide rail 330 and connected to the driving end of the positioning tape cutting motor 320; the positioning tape cutting frame 340 is provided with two cutting knife assemblies 350 arranged along the Y-axis direction and two positioning comb assemblies arranged along the Y-axis direction.

[0095] Each cutter assembly 350 includes two cutter units 351 symmetrically arranged in the upper and lower parts, and the symmetrical arrangement is used to improve the cutting stability; each cutter unit 351 includes a cutter cylinder 352, a second vertical guide rail 353, a cutter seat 354, and a cutter 355 arranged on the cutter seat 354, which is located on the second vertical guide rail 353 and connected to the driving end of the cutter cylinder 352; the cutters 355 of the two cutter units 351 cooperate with each other to cut off the welding strip 01 between them.

[0096] Each cutter assembly 350 corresponds to a positioning comb assembly, and each cutter assembly 350 and the corresponding positioning comb assembly are arranged in sequence along the X-axis direction. Each positioning comb assembly includes two positioning comb units 361 corresponding to the two cutter units 351. Each positioning comb unit 361 includes a positioning comb cylinder 362, a positioning comb guide rail 363 (moving along the Y-axis direction), a positioning plate 364, and a plurality of positioning steel needles 365 arranged on the positioning cutting frame 340; the positioning plate 364 is arranged on the positioning comb guide rail 363 and connected to the driving end of the positioning comb cylinder 362, and a plurality of positioning steel needles 365 are arranged on the bottom surface of the positioning plate 364. The plurality of positioning steel needles 365 of the two positioning comb units 361 are staggered with each other, and the gaps between adjacent positioning steel needles 365 are used to pass through the welding strip 01 to straighten the welding strip 01.

[0097] Reference Figure 8 The solder strip clamping mechanism 400 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 410 and a single-row press needle assembly 420 arranged in sequence along the X-axis. The single-row press needle assembly 420 and the double-row press needle assembly 410 both include a press needle motor 401, a lead screw 402, a third vertical guide rail 403, and a press needle mounting plate 404; the press needle mounting plate 404 is arranged on the third vertical guide rail 403, and is connected to the driving end of the press needle motor 401 through the lead screw 402.

[0098] The double-row press needle assembly 410 is used to simultaneously press multiple solder strips 01, and two press needle units are arranged on the bottom surface of the press needle mounting plate 404. The single-row press needle assembly 420 is used to assist the double-row press needle assembly 420 in pressing multiple solder strips 01, and a press needle unit is arranged on the bottom surface of the press needle mounting plate 404. Each press needle unit includes multiple press needles 405 arranged in sequence along the Y-axis, and each press needle 405 corresponds to a solder strip 01.

[0099] Each pressing pin 405 is fixed to the corresponding pressing pin mounting plate 404 by means of a threaded connection, so as to facilitate replacement.

[0100] When making the long solder strip between the two battery cells ( Fig.13 ), the double-row press pin assembly 410 and the single-row press pin assembly 420 can act simultaneously to make the short solder strip between strings ( Fig.14 ), only the double-row press pin assembly 410 is in operation. The short welding strips between strings are the short welding strips on the last battery cell of the previous battery string and the short welding strips on the first battery cell of the next battery string.

[0101] The welding strip clamping mechanism 400 also includes a maintenance cylinder 430, and the driving end of the maintenance cylinder 430 is connected to the single-row pressure needle assembly 420 and the double-row pressure needle assembly 410 through a connecting plate, which is used to drive the single-row pressure needle assembly 420 and the double-row pressure needle assembly 410 to the upper position when the equipment is repaired, so as to facilitate maintenance.

[0102] Reference Figures 9-10 The double-row traction mechanism 500 is used to clamp and pull the welding strip 01, move it according to a preset length, and provide the standardized welding strip segment required for subsequent processing (such as welding). It includes A (two) traction components 510 arranged in sequence along the Y axis, and each traction component 510 includes a traction base plate 511, and a traction motor 512, a traction guide rail 513 (moving along the X-axis direction) and a clamping component 514 arranged on the top surface of the traction base plate 511; the clamping component 514 is arranged on the traction guide rail 513 and connected to the driving end of the traction motor 512.

[0103] The clamping assembly 514 includes a lower clamping jaw 515 and two clamping units 516; the two clamping units 516 are stacked up and down, and each clamping unit 516 includes a mounting plate 517, a linked cylinder 5120, a plurality of piston rods 518 and a plurality of clamping jaws 519, the linked cylinders 5120 are arranged on the mounting plate 517, and the plurality of clamping jaws 519 are respectively connected through a plurality of piston rods 518, and the plurality of clamping jaws 519 are arranged in sequence along the Y-axis direction.

[0104] The lower clamping jaw 515 is arranged on the mounting plate 517 of the lower clamping unit 516 and cooperates with the multiple clamping jaws 519 of the two clamping units 516. The multiple clamping jaws 519 of the two clamping units 516 are staggered with each other and are respectively used to clamp the welding strips 01 with odd and even numbers.

[0105] Reference Figures 11-12 The support strip spacing mechanism 600 is used to separate and arrange the welding strips 01 according to odd and even sequences and accurately position them, providing a preset welding strip layout for subsequent welding, which includes a spacing base plate 610, a first spacing motor 620, a spacing component 630, and A (two) adsorption components 640.

[0106] The first spacing motor 620 (linear motor, moving along the X-axis direction) is arranged on the top surface of the spacing base plate 610, and the spacing assembly 630 is arranged thereon; the spacing assembly 630 includes a second spacing motor 631 and a second horizontal guide rail 632 (moving along the X-axis direction), and two adsorption assemblies 640 are arranged on the second horizontal guide rail 632 in sequence along the Y-axis and connected to the driving end of the second spacing motor 631. The two adsorption assemblies 640 move along the X-axis direction under the clamping assemblies 514 of the two traction assemblies 510, respectively.

[0107] Each adsorption component 640 includes two adsorption units 641 arranged in sequence along the X-axis, each adsorption unit 641 includes an adsorption base 642, five parallel adsorption strips 643 and multiple positioning bosses 645, each adsorption strip 643 corresponds to a welding strip 01, and multiple adsorption holes 644 are set on the top surface of each adsorption strip 643. Every two positioning bosses 645 are symmetrically arranged on both sides of an adsorption hole 644 for assisting in positioning the welding strip 01.

[0108] The adsorption base 642 is connected to the driving end of the second spacing motor 631, and an adsorption gas path is arranged inside, which is respectively connected to each adsorption hole 644; the adsorption strips 643 of the two adsorption units 641 are staggered with each other, and are respectively used to adsorb the welding strips 01 with odd and even numbers.

[0109] The A floating pressure block assemblies 241 of the integral welding strip clamping assembly 240, the A cutting knife assemblies 350 of the positioning and cutting strip mechanism 300, the A clamping assemblies 514 of the double-row traction mechanism 500, and the A adsorption assemblies 640 of the supporting and spacing mechanism 600 correspond one to one.

[0110] A method for making a belt for BC battery welding, using the above-mentioned belt making device for BC battery welding, comprises the following steps:

[0111] Step 1, all the welding strips 01 are sequentially passed through the multiple welding strip grooves of the wire comb 230, the corresponding cutter assembly 350, and the gaps between the adjacent positioning steel needles 365 in the corresponding positioning comb assembly, and all the welding strips 01 are clamped by two clamping assemblies 514, and then all the welding strips 01 are clamped by two welding strip clamping assemblies 220 of the straightening and clamping mechanism 200 and the overall welding strip clamping assembly 240;

[0112] Step 2: Cut all the welding strips 01 by the two cutting knife assemblies 350 of the positioning and cutting mechanism 300 to form the initial position of the welding strips 01, and then correct the welding strips 01 by two positioning comb assemblies, as follows:

[0113] Step 2.1, in the two cutter units 351 of each cutter assembly 350, the cutter seat 354 is driven by the cutter cylinder 352 to move along the second vertical guide rail 353, and the two cutters 355 move toward each other to cut off all the welding strips 01, forming the initial position of the welding strips 01;

[0114] Step 2.2, the cut welding strip 01 automatically slides into the corresponding positioning comb assembly area, and the positioning comb cylinder 362 drives the positioning plate 364 to move on the positioning comb guide rail 363 (moves along the Y-axis direction), pushes the welding strip 01 into the gap between the steel needles, corrects the position of the welding strip 01, and ensures that the welding strip 01 is neatly arranged and parallel to the X-axis direction;

[0115] Step 3: Make the two clamping components 514 loosen all the welding strips 01, and then move the two traction components 510 of the double-row traction mechanism 500 to the initial position of the welding strips 01, specifically:

[0116] The traction motor 512 drives the traction assembly 510 to move along the traction guide rail 513 toward the initial position of the welding strip 01. When the traction assembly 510 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 510 reaches the correct initial position of the welding strip 01.

[0117] Step 4: Clamp all the welding strips 01 by two clamping assemblies 514;

[0118] Alternatively, a clamping unit 516 of the two clamping assemblies 514 clamps the welding strips 01 with even numbers, and a welding strip clamping assembly 220 of the straightening and clamping mechanism 200 clamps the welding strips 01 with odd numbers;

[0119] A clamping unit 516 of the two clamping assemblies 514 clamps the welding strips 01 with odd numbers, and a welding strip clamping assembly 220 of the straightening and clamping mechanism 200 clamps the welding strips 01 with even numbers;

[0120] The clamping action of a clamping unit 516 is as follows: the linked cylinder 5120 is started, driving the piston rod 518 to move, driving the multiple clamping claws 519 to press down; each clamping claw 519 contacts and clamps the corresponding welding strip 01 to ensure that the welding strip 01 is fixed;

[0121] The clamping action of a solder strip clamping assembly 220 is specifically as follows: the first clamping cylinder 221 drives the first clamping block 223 to move downward, and the solder strip 01 is independently clamped through the clamping groove at the bottom of the first clamping block 223;

[0122] Step 5: Move the two traction assemblies 510 of the double-row traction mechanism 500 in the positive direction of the X-axis by a preset distance, and make the support belt spacing mechanism 600 be located below the welding belt 01, specifically:

[0123] The traction motor 512 drives the two traction assemblies 510 of the double-row traction mechanism 500 to move a preset distance in the positive direction along the X-axis direction through the traction guide rail 513. For the long welding strip between two battery cells, the preset distance = two battery cell widths - 2 * compensation value; for the short welding strip between strings, the preset distance = one battery cell width - compensation value; the compensation value is determined by the battery process, and in general, the compensation value is -10~10mm;

[0124] Step 6, pressing down the single-row pressing needle assembly 420 and the double-row pressing needle assembly 410 on the solder ribbon pressing mechanism 400;

[0125] Alternatively, the double-row pressing pin assembly 410 on the solder strip pressing mechanism 400 is pressed downward;

[0126] Step 7, move the positioning tape cutting frame 340 of the positioning tape cutting mechanism 300 in the positive direction of the X axis by a preset distance of 5, so that the cutting knife assembly 350 in step 8A cuts the welding tape 01 without interfering with the straightening and pressing mechanism 200; the preset distance is 2 to 10 mm;

[0127] Step 8, cutting off all the welding strips 01 by positioning the two cutting knife assemblies 350 of the strip cutting mechanism 300;

[0128] Step 9, move the two solder strip pressing components 220 and the overall solder strip pressing component 240 of the solder strip pressing mechanism 400 toward the positive direction of the Z axis to release the solder strip 01;

[0129] Step 10: Move the two adsorption components 640 of the tape support and spacing mechanism 600 in the positive direction of the X-axis, and at the same time, one adsorption unit 641 of each adsorption component 640 adsorbs the welding tape 01 with an even or odd sequence number to complete the tape making.

[0130] Embodiment 1

[0131] Reference Fig.13 , a method for making a ribbon for BC battery welding, for making a long welding ribbon for use between two battery cells, each battery cell being a half-cell;

[0132] The steps include:

[0133] Step 1, all the welding strips 01 are sequentially passed through the multiple welding strip grooves of the wire comb 230, the corresponding cutter assembly 350, and the gaps between the adjacent positioning steel needles 365 in the corresponding positioning comb assembly, and all the welding strips 01 are clamped by two clamping assemblies 514, and then all the welding strips 01 are clamped by two welding strip clamping assemblies 220 of the straightening and clamping mechanism 200 and the overall welding strip clamping assembly 240;

[0134] Step 2: Cut all the welding strips 01 by the two cutting knife assemblies 350 of the positioning cutting mechanism 300 to form the initial position of the welding strips 01, and then use the two positioning comb assemblies to return the welding strips 01 to the original position. The knife cylinder 352 drives the cutting knife seat 354 to move along the second vertical guide rail 353, and the two cutting knives 355 move toward each other to cut all the welding strips 01 to form the initial position of the welding strips 01;

[0135] Step 2.2, the cut welding strip 01 automatically slides into the corresponding positioning comb assembly area, and the positioning comb cylinder 362 drives the positioning plate 364 to move on the positioning comb guide rail 363 (moves along the Y-axis direction), pushes the welding strip 01 into the gap between the steel needles, corrects the position of the welding strip 01, and ensures that the welding strip 01 is neatly arranged and parallel to the X-axis direction;

[0136] Step 3: Make the two clamping components 514 loosen all the welding strips 01, and then move the two traction components 510 of the double-row traction mechanism 500 to the initial position of the welding strips 01, specifically:

[0137] The traction motor 512 drives the traction assembly 510 to move along the traction guide rail 513 toward the initial position of the welding strip 01. When the traction assembly 510 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 510 reaches the correct initial position of the welding strip 01.

[0138] Step 4: Clamp all the welding strips 01 by two clamping assemblies 514;

[0139] Step 5: Move the two traction assemblies 510 of the double-row traction mechanism 500 in the positive direction of the X-axis by a preset distance, and make the support belt spacing mechanism 600 be located below the welding belt 01, specifically:

[0140] The traction motor 512 drives the two traction assemblies 510 of the double-row traction mechanism 500 to move a preset distance in the positive direction along the X-axis direction through the traction guide rail 513, where the preset distance = the width of two battery cells - 2 * compensation value; the compensation value is -10 to 10 mm;

[0141] Step 6: Press down the single-row pressing needle assembly 420 and the double-row pressing needle assembly 410 on the solder ribbon pressing mechanism 400 at the same time;

[0142] Step 7, move the positioning cutting frame 340 of the positioning cutting mechanism 300 to the X-axis positive direction by a preset distance of 5, so that the cutting knife assembly 350 in step 8A cuts the welding ribbon 01 without interfering with the straightening and clamping mechanism 200; the preset distance is 4 to 8 mm,

[0143] Step 8, cutting off all the welding strips 01 by positioning the two cutting knife assemblies 350 of the strip cutting mechanism 300;

[0144] Step 9, move the two solder strip pressing components 220 and the overall solder strip pressing component 240 of the solder strip pressing mechanism 400 toward the positive direction of the Z axis to release the solder strip 01;

[0145] Step 10, move the two adsorption components 640 of the support and spacing mechanism 600 toward the positive direction of the X-axis, and at the same time, one adsorption unit 641 of each adsorption component 640 adsorbs the welding strip 01 with an even number, so as to complete the production of the cross-knuckle welding strip 01 required for the BC battery.

[0146] Embodiment 2

[0147] Reference Fig.14 , a method for making a ribbon for BC battery welding, used for making short ribbons between strings, the short ribbons between strings are the short ribbons on the last cell of the previous cell string and the short ribbons on the first cell of the next cell string, each cell is a half cell;

[0148] The steps include:

[0149] Step 5: Preset distance = width of one cell - compensation value; the compensation value is -10 to 10 mm;

[0150] Step 6: Press down the double-row pressing pin assembly 410 on the solder ribbon pressing mechanism 400;

[0151] The remaining steps of this embodiment are consistent with those of the first embodiment.

[0152] Embodiment 3

[0153] A method for making a strip for BC battery welding, for making a welding strip 01 with an even number, comprising the following steps:

[0154] Step 4, move the two traction components 510 of the double-row traction mechanism 500 to the initial position of the welding strip 01, and then clamp the welding strip 01 with an even number through a clamping unit 516 of the two clamping components 514; and clamp the welding strip 01 with an odd number through a welding strip clamping component 220 of the straightening and clamping mechanism 200 to prevent the odd-numbered welding strip 01 from falling off during the traction process;

[0155] Step 10, the two adsorption components 640 of the tape spacing mechanism 600 are moved in the positive direction of the X axis, and at the same time, one adsorption unit 641 of each adsorption component 640 adsorbs the welding tape 01 with an even number, thereby completing the production of the welding tape 01 with an even number;

[0156] The remaining steps of this embodiment are consistent with those of the first embodiment.

[0157] Embodiment 4

[0158] A method for making a strip for BC battery welding, for making a welding strip 01 with an odd sequence number, comprising the following steps:

[0159] Step 3, move the two traction components 510 of the double-row traction mechanism 500 to the initial position of the welding strip 01, and then clamp the welding strip 01 with an odd number through a clamping unit 516 of the two clamping components 514; and clamp the welding strip 01 with an even number through a welding strip clamping component 220 of the straightening and clamping mechanism 200 to prevent the even-numbered welding strip 01 from falling off during the traction process;

[0160] Step 10, the two adsorption components 640 of the tape spacing mechanism 600 are moved in the positive direction of the X axis, and at the same time, one adsorption unit 641 of each adsorption component 640 adsorbs the welding tape 01 with an odd sequence number, thereby completing the production of the welding tape 01 with an odd sequence number;

[0161] The remaining steps of this embodiment are consistent with those of the first embodiment.

Claims

1. A belt making device for BC battery welding, characterized in that: It comprises a straightening and pressing mechanism (200), a positioning and cutting mechanism (300), a welding tape pressing mechanism (400), a double-row traction mechanism (500), and a tape support and spacing mechanism (600) which are sequentially arranged along the transmission direction of the welding tape (01); The straightening and pressing mechanism (200) comprises a straightening and pressing frame (210), two solder strip pressing assemblies (220) arranged on the straightening and pressing frame (210) in sequence along the X-axis direction, a wire passing comb (230) and an integral solder strip pressing assembly (240); the X-axis direction is the length direction of the solder strip, and the solder strip transmission direction is the positive direction of the X-axis; the two solder strip pressing assemblies (220) are respectively used to press solder strips with odd and even numbers; the wire passing comb (230) is used to guide the solder strips (01) to pass through and ensure that the solder strips (01) are arranged neatly; the integral solder strip pressing assembly (240) is used to press all solder strips (01); The positioning tape cutting mechanism (300) comprises a positioning tape cutting frame (340) moving along the X-axis direction, and the positioning tape cutting frame (340) is provided with A cutter assemblies (350) arranged along the Y-axis direction and A positioning comb assemblies arranged along the Y-axis direction; each cutter assembly (350) and its corresponding positioning comb assembly are arranged in sequence along the X-axis direction, the cutter assembly (350) is used to cut the welding tape (01), and the positioning comb assembly is used to correct the cut welding tape (01); A≥1; The solder strip clamping mechanism (400) comprises a plurality of pressure needle units sequentially arranged along the X-axis, each pressure needle unit comprises a plurality of pressure needles (405) sequentially arranged along the Y-axis, and each pressure needle (405) is used to clamp a solder strip (01); the Y-axis conforms to a left-hand rectangular coordinate system in which the solder strip transmission direction is the positive direction of the X-axis and the positive direction of the Z-axis is vertically upward; The double-row traction mechanism (500) is used to clamp and pull the welding strip (01), and comprises A clamping assemblies (514) arranged in sequence along the Y axis and moving along the X axis direction; each of the clamping assemblies (514) comprises a lower clamping jaw (515) and two clamping units (516); the two clamping units (516) are stacked up and down, and the multiple clamping jaws (519) of the two clamping units (516) are staggered and respectively used to cooperate with the lower clamping jaw (515) to clamp the welding strips (01) with odd and even numbers; The tape support spacing mechanism (600) 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 A adsorption components (640) arranged in sequence along the Y axis, the A adsorption components (640) being respectively used to move in the X-axis direction below the A clamping components (514); each adsorption component (640) comprises two adsorption units (641) arranged in sequence along the X axis, the two adsorption units (641) being respectively used to adsorb the welding tapes (01) with odd and even number sequences.

2. A belt making device for BC battery welding according to claim 1, characterized in that: The straightening and pressing frame (210) is provided with a pressing bottom plate (211) on the XY plane; Each of the welding strip clamping assemblies (220) comprises a first clamping cylinder (221) located below the clamping base plate (211), a first clamping block (223) located above the clamping base plate (211), and two first clamping guide rods (222); the length direction of the first clamping block (223) is parallel to the Y axis, and a plurality of clamping grooves are sequentially arranged on the bottom surface along the Y axis, and a silicone pad corresponding to the bottom surface of the first clamping block (223) is arranged on the clamping base plate (211); the upper ends of the two first clamping guide rods (222) are respectively connected to the two ends of the first clamping block (223), and the lower ends pass through the clamping base plate (211) to connect to the driving end of the first clamping cylinder (221); The multiple pressing grooves of the two welding strip pressing assemblies (220) are interlaced and are used to press the welding strips (01) with odd and even sequence numbers respectively; The top surface of the wire comb (230) is provided with a plurality of welding strip grooves, and each welding strip groove corresponds to a welding strip (01).

3. A belt making device for BC battery welding according to claim 2, characterized in that: The integral welding strip pressing assembly (240) comprises A floating pressing block assemblies (241) which are arranged in sequence along the Y axis and are located above the pressing bottom plate (211); Each of the floating pressure block assemblies (241) comprises a floating plate (243), a first vertical guide rail (244), at least one second pressing cylinder (242), and a positioning slot assembly; The floating plate (243) is connected to the driving end of the corresponding second clamping cylinder (242), the two ends of the floating plate (243) are located on the first vertical guide rail (244), a plurality of second clamping guide rods (245) are arranged in the middle, a compression spring (246) is connected to the bottom of each second clamping guide rod (245), at least one floating pressure block (247) is arranged under each compression spring (246), and each floating pressure block (247) is used to clamp a welding strip (01); The floating plate (243) and the alignment groove assembly are arranged in sequence along the X-axis. The alignment groove assembly is used to position the welding strip (01), and comprises a plurality of alignment grooves arranged in sequence on the pressing bottom plate (211) along the Y-axis, and a cover plate (248) located above the plurality of alignment grooves; each alignment groove corresponds to a welding strip (01), and the cover plate (248) limits the position deviation of the welding strip (01) by covering the alignment groove; The width of the welding strip groove on the top surface of the wire comb (230) is 0.2-1 mm.

4. A belt making device for BC battery welding according to any one of claims 1 to 3, characterized in that: The positioning and cutting mechanism (300) further comprises a positioning and cutting bottom plate (310), a positioning and cutting motor (320), and a first horizontal guide rail (330); The positioning belt cutting motor (320) and the first horizontal guide rail (330) are respectively arranged on the bottom surface and the top surface of the positioning belt cutting bottom plate (310); the positioning belt cutting frame (340) is arranged on the first horizontal guide rail (330) and is connected to the driving end of the positioning belt cutting motor (320); Each of the cutter assemblies (350) comprises two cutter units (351) symmetrically arranged in an upper and lower direction; each of the cutter units (351) comprises a cutter cylinder (352) arranged on a positioning and cutting frame (340), a second vertical guide rail (353), a cutter seat (354), and a cutter (355) arranged on the cutter seat (354); the cutter seat (354) is located on the second vertical guide rail (353) and connected to the driving end of the cutter cylinder (352); the two cutter seats (354) are used to move towards or away from each other under the action of the cutter cylinder (352); The cutters (355) of the two cutter units (351) cooperate with each other to cut off the welding strip (01) therebetween; Each positioning comb assembly comprises two positioning comb units (361) corresponding to the two cutting knife units (351), and each positioning comb unit (361) comprises a positioning comb cylinder (362), a positioning comb guide rail (363), and a positioning plate (364) arranged on the positioning cutting frame (340); the driving end of the positioning comb cylinder (362) is connected to the positioning plate (364) arranged on the positioning comb guide rail (363) to drive the positioning plate (364) to move along the Y-axis direction, and a plurality of positioning steel needles (365) are arranged on the bottom surface of the positioning plate (364); The multiple positioning steel needles (365) of the two positioning comb units (361) are interlaced with each other, and the gaps between adjacent positioning steel needles (365) are used to pass the welding strip (01) to align the welding strip (01).

5. A belt making device for BC battery welding according to claim 4, characterized in that: The welding strip pressing mechanism (400) comprises a double-row pressing needle assembly (410) and a single-row pressing needle assembly (420) which are sequentially arranged along the X-axis, and the single-row pressing needle assembly (420) and the double-row pressing needle assembly (410) both comprise a pressing needle motor (401), a lead screw (402), a third vertical guide rail (403), and a pressing needle mounting plate (404); the pressing needle mounting plate (404) is arranged on the third vertical guide rail (403) and is connected to a driving end of the pressing needle motor (401) via the lead screw (402); The double-row pressure needle assembly (410) is used to simultaneously press a plurality of solder strips (01), and two pressure needle units are arranged on the bottom surface of the pressure needle mounting plate (404); the single-row pressure needle assembly (420) is used to assist the double-row pressure needle assembly (410) in pressing a plurality of solder strips (01), and one pressure needle unit is arranged on the bottom surface of the pressure needle mounting plate (404); Each of the pressure pins (405) is fixed on the corresponding pressure pin mounting plate (404) by means of a threaded connection.

6. A belt making device for BC battery welding according to claim 5, characterized in that: The welding strip pressing mechanism (400) further comprises a maintenance cylinder (430), wherein a driving end of the maintenance cylinder (430) is connected to the single-row pressing needle assembly (420) and the double-row pressing needle assembly (410) via a connecting plate, and is used to drive the single-row pressing needle assembly (420) and the double-row pressing needle assembly (410) to move to an upper position when the equipment is being repaired.

7. A belt making device for BC battery welding according to claim 5, characterized in that: The double-row traction mechanism (500) further comprises A traction assemblies (510) arranged in sequence along the Y axis, each traction assembly (510) comprising a traction base plate (511), and a traction motor (512) and a traction guide rail (513) arranged on the top surface of the traction base plate (511); the clamping assembly (514) is arranged on the corresponding traction guide rail (513) and connected to the driving end of the traction motor (512); Each of the clamping units (516) comprises a mounting plate (517) and a linked cylinder (5120), wherein the linked cylinder (5120) is arranged on the mounting plate (517) and is respectively connected to the plurality of clamping claws (519) via a plurality of piston rods (518), and the plurality of clamping claws (519) are arranged in sequence along the Y-axis direction; The lower clamping jaw (515) is arranged on a mounting plate (517) of a lower clamping unit (516).

8. A belt making device for BC battery welding according to claim 7, characterized in that: The belt-supporting spacing mechanism (600) comprises a spacing base plate (610), a first spacing motor (620) arranged on the top surface of the spacing base plate (610), and a spacing assembly (630) arranged on the first spacing motor (620); the spacing assembly (630) comprises a second spacing motor (631) and a second horizontal guide rail (632); The A adsorption components (640) are arranged on the second horizontal guide rail (632) and connected to the driving end of the second spacing motor (631); Each of the adsorption units (641) comprises an adsorption base (642), a plurality of adsorption bars (643) and a plurality of positioning bosses (645); each adsorption bar (643) corresponds to a welding strip (01); a plurality of adsorption holes (644) are arranged on the top surface of each adsorption bar (643); and two positioning bosses (645) are symmetrically arranged on both sides of an adsorption hole (644) for assisting in positioning the welding strip (01); the adsorption base (642) is connected to the driving end of the second spacing motor (631) and has an adsorption gas path arranged inside, which is respectively connected to each of the adsorption holes (644); the adsorption bars (643) of the two adsorption units (641) are interlaced with each other and are respectively used to adsorb welding strips (01) with odd and even numbers.

9. A method for making a tape for BC battery welding, using the tape making device for BC battery welding according to claim 1, characterized in that: The steps include: Step 1, all the welding strips (01) are sequentially passed through the wire comb (230), the corresponding cutting knife assembly (350), and the corresponding positioning comb assembly, and all the welding strips (01) are clamped by A clamping assemblies (514), and then all the welding strips (01) are clamped by two welding strip clamping assemblies (220) and the overall welding strip clamping assembly (240); Step 2, cutting all the welding strips (01) by using A cutting knife assemblies (350) of the positioning and cutting mechanism (300) to form the initial position of the welding strips (01), and then straightening the welding strips (01) by using A positioning comb assemblies; Step 3, making A clamping components (514) loosen all the welding strips (01), and then move to the initial position of the welding strips (01); Step 4, clamping all the welding strips (01) by A clamping components (514); Alternatively, a clamping unit (516) of A clamping assemblies (514) is used to clamp the welding strips (01) with even numbers, and a welding strip clamping assembly (220) of the straightening and clamping mechanism (200) is used to clamp the welding strips (01) with odd numbers; A clamping unit (516) of A clamping assemblies (514) is used to clamp the welding strips (01) with odd numbers, and a welding strip clamping assembly (220) of the straightening and clamping mechanism (200) is used to clamp the welding strips (01) with even numbers; Step 5, move A clamping components (514) in the positive direction of the X-axis by a preset distance, and make the support belt spacing mechanism (600) be located below the welding belt (01); Step 6, pressing down part or all of the pin pressing units on the solder strip pressing mechanism (400); Step 7, moving the positioning tape cutting frame (340) of the positioning tape cutting mechanism (300) in the positive direction of the X-axis by a preset distance, so that the A cutting knife assemblies (350) cut the welding tape (01); Step 8, move the two solder strip clamping assemblies (220) and the overall solder strip clamping assembly (240) in the positive direction of the Z axis to release the solder strip (01); Step 9: Move A adsorption components (640) in the positive direction of the X axis, and at the same time, one adsorption unit (641) of each adsorption component (640) adsorbs the welding strip (01) with an even or odd sequence number, thereby completing the strip making.

10. A method for making a strip for BC battery welding according to claim 1, characterized in that: The step 2 is specifically as follows: Step 2.1, in the two cutter units (351) of each cutter assembly (350), the cutter seat (354) is driven by the cutter cylinder (352) to move along the second vertical guide rail (353), and the two cutters (355) move towards each other to cut off all the welding strips (01), thereby forming the initial position of the welding strips (01); Step 2.2, the cut welding strip (01) automatically slides into the corresponding positioning comb assembly area, and the positioning comb cylinder (362) drives the positioning plate (364) to move along the Y-axis direction on the positioning comb guide rail (363), pushing the welding strip (01) into the gap between the steel needles, correcting the position of the welding strip (01), and ensuring that the welding strip (01) is arranged neatly and parallel to the X-axis direction.

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