Solder strip manufacturing device and series welding system

Abstract

The welding strip manufacturing device comprises a base and a plurality of bearing table tops arranged on the base in the length direction of a welding strip, and every two adjacent bearing table tops are connected through a variable pitch unit; a first cutting unit or a second cutting unit is arranged between every two adjacent bearing table tops, the first cutting units and the second cutting units are alternately arranged in the length direction of the welding strips, the first cutting units are used for cutting the first welding strips, and the second cutting units are used for cutting the second welding strips; each bearing table top is provided with a plurality of pressing pieces in the width direction of the welding strip. When the first welding strip and the second welding strip are cut in the pitch changing direction, the head end of each first-polarity welding strip and the head end of each second-polarity welding strip which are to be cut off are pressed on the corresponding bearing table tops by the corresponding pressing pieces. And the head end of each first polarity welding strip and the head end of each second polarity welding strip are pressed on the corresponding bearing table surfaces by the corresponding pressing pieces during pitch changing, so that the first polarity welding strips and the second polarity welding strips which are arranged in a staggered manner are prepared.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photovoltaic module production, and particularly relates to a welding strip manufacturing device and a string welding system. BACKGROUND

[0002] The front surface of the back contact solar cell is free of main grid lines, and the positive electrode row and the negative electrode row are alternately arranged on the back surface of the cell, thereby reducing the light shielding of the cell and improving the light conversion efficiency of the cell. During string welding, a plurality of cell back surfaces are sequentially laid upwards, the polarities of the electrode rows (grid lines) of the adjacent two cells on the same straight line are opposite, and the adjacent two cells are connected in series through welding strips.

[0003] In the existing welding strip arrangement process, two welding strip arrangement stations are arranged, the whole set of cells is conveyed to one of the welding strip arrangement stations, the first polarity welding strip is arranged on the cell at the welding strip arrangement station, and then the cell is conveyed to the other welding strip arrangement station to arrange the second polarity welding strip on the cell. Correspondingly, two welding strip manufacturing devices are arranged, one of the welding strip manufacturing devices is used to manufacture the first polarity welding strip, and the other welding strip manufacturing device is used to manufacture the second polarity welding strip. This method has low efficiency of manufacturing and arranging welding strips, poor stability of welding strip arrangement, high cost, and large occupied space. CONTENT OF THE INVENTION

[0004] Therefore, the application provides a welding strip manufacturing device and a string welding system, which can complete the manufacturing of the first polarity welding strip and the second polarity welding strip in the same welding strip manufacturing device, and has excellent welding strip arrangement precision and string welding yield.

[0005] A welding strip manufacturing device comprises a base and a plurality of bearing platforms arranged side by side on the base along the length direction of the welding strip, and the adjacent two bearing platforms are connected through a variable-distance unit. The bearing platforms are used to place a plurality of first welding strips and second welding strips, and each first welding strip and each second welding strip are alternately arranged along the width direction of the welding strip.

[0006] The first cutting unit and the second cutting unit are alternately arranged along the length direction of the welding strip, the first cutting unit is used to cut the first welding strip, and the second cutting unit is used to cut the second welding strip.

[0007] Each bearing platform is provided with a plurality of pressing members along the width direction of the welding strip.

[0008] After the first welding strip is cut into a plurality of first polarity welding strips by the first cutting unit and the second welding strip is cut into a plurality of second polarity welding strips by the second cutting unit, the pitch changing unit moves along the pitch changing direction, so that each of the first polarity welding strips and each of the second polarity welding strips has a preset pitch along the length direction of the welding strip; and along the pitch changing direction, when the first welding strip is cut, the leading end of each of the first polarity welding strips to be cut off is pressed on the corresponding loading table by the corresponding pressing member, when the second welding strip is cut, the leading end of each of the second polarity welding strips to be cut off is pressed on the corresponding loading table by the corresponding pressing member, and when the pitch is changed, the leading end of each of the first polarity welding strips and the leading end of each of the second polarity welding strips are pressed on the corresponding loading table by the corresponding pressing member

[0009] Preferably, the pitch changing drive member is further provided, the power output end of the pitch changing drive member is connected with the loading table located at the leading end along the pitch changing direction, and the pitch changing drive member drives the loading table connected therewith to move along the pitch changing direction, so that each of the pitch changing units moves to change the pitch between the adjacent two loading tables.

[0010] Preferably, the pitch changing unit comprises a first pitch changing rod and a second pitch changing rod, the first pitch changing rod has a first connecting end and a first movable end, and the second pitch changing rod has a second connecting end and a second movable end.

[0011] Along the width direction of the welding strip, at least one side of each of the loading tables is connected with the adapter plate.

[0012] The first connecting end and the second connecting end are fixedly connected with the adapter plate away from the pitch changing drive member, the first movable end penetrates the adapter plate close to the pitch changing drive member and is movably connected with the adapter plate, and the end of the first movable end close to the pitch changing drive member is provided with a pitch changing limiting part.

[0013] Before the pitch is changed, the second movable end abuts against the adapter plate close to the pitch changing drive member, at this time, the pitch changing limiting part and the adapter plate penetrated by the first movable end have a preset pitch, and after the pitch is changed, the pitch changing limiting part abuts against the adapter plate penetrated by the first movable end, at this time, the second movable end and the adapter plate close to the pitch changing drive member have a preset pitch.

[0014] The second movable end is connected with the adapter plate close to the pitch changing drive member through the elastic member, before the pitch is changed, the elastic member is in the first form, at this time, the pitch changing limiting part and the adapter plate penetrated by the first movable end have a preset pitch, and after the pitch is changed, the elastic member is in the second form, at this time, the pitch changing limiting part abuts against the adapter plate penetrated by the first movable end.

[0015] Preferably, each of the loading tables is slidably connected with the base through the guide member.

[0016] Preferably, the first cutting unit comprises a plurality of first cutting members, each first cutting member in each first cutting unit is arranged one-to-one corresponding to each first solder strip;

[0017] The second cutting unit comprises a plurality of second cutting members, each second cutting member in each second cutting unit is arranged one-to-one corresponding to each second solder strip.

[0018] Preferably, each first cutting member and each second cutting member simultaneously act to simultaneously cut each first solder strip and each second solder strip.

[0019] Preferably, along the variable distance direction, each carrying platform except the one located at the head end is provided with a plurality of limiting members along the width direction of the solder strip, and each pressing member and each limiting member of each carrying platform are alternately arranged along the width direction of the solder strip, so that the tail end of each first polarity solder strip and the tail end of each second polarity solder strip except the second polarity solder strips located at the head end and the tail end are limited by the corresponding limiting members.

[0020] Preferably, each pressing member and each limiting member penetrates through the corresponding carrying platform, and each carrying platform is provided with a mounting plate below;

[0021] Along the variable distance direction, all the pressing members corresponding to the carrying platform located at the head end are mounted on the mounting plate below the carrying platform, and all the pressing members and all the limiting members corresponding to each carrying platform except the one located at the head end are mounted on the mounting plate below the corresponding carrying platform.

[0022] Preferably, the pressing member comprises a first guide rod penetrating through the carrying platform and a first guide sleeve sleeved outside the first guide rod, the first guide sleeve is mounted on the carrying platform, the bottom of the first guide rod is mounted on the corresponding mounting plate, the top of the first guide rod is provided with a first pressing block, the first pressing block is located above the carrying platform, the first pressing block protrudes from the outer periphery of the first guide sleeve, a first spiral guide groove is spirally formed on the outer peripheral wall of the first guide sleeve along the axial direction of the first guide rod, a first guide shaft is mounted on the first guide rod, one end of the first guide shaft is located in the first spiral guide groove, and the first guide shaft moves along the first spiral guide groove to make the first guide rod rotate and lift relative to the first guide sleeve;

[0023] The limiting member comprises a second guide rod penetrating the bearing platform and a second guide sleeve sleeved outside the second guide rod, the second guide sleeve is installed on the bearing platform, the bottom of the second guide rod is installed on the corresponding mounting plate, the top of the second guide rod is provided with a second pressing block, the second pressing block is located above the bearing platform, the second pressing block protrudes from the outer periphery of the second guide sleeve, a second spiral guide groove is spirally formed on the outer peripheral wall of the second guide sleeve along the axial direction of the second guide rod, a second guide shaft is installed on the second guide rod, one end of the second guide shaft is located in the second spiral guide groove, and the second guide shaft moves along the second spiral guide groove so that the second guide rod can rotate and lift relative to the second guide sleeve.

[0024] When the first guide shaft is located at the upper end of the first spiral guide groove and the second guide shaft is located at the upper end of the second spiral guide groove, the distance between the first pressing block and the bearing platform is smaller than the distance between the second pressing block and the bearing platform.

[0025] Before placing each first solder strip and each second solder strip on the bearing platform, the first guide shaft is located at the upper end of the first spiral guide groove, the second guide shaft is located at the upper end of the second spiral guide groove, and the first pressing block and the second pressing block are both deviated from the path of placing the solder strip; after placing each first solder strip and each second solder strip on the bearing platform, the first guide shaft is moved from the upper end to the lower end of the first spiral guide groove, and the second guide shaft is moved from the upper end to the lower end of the second spiral guide groove, so that the first pressing block and the second pressing block are both moved above the corresponding solder strip, and the first pressing block presses the corresponding solder strip on the corresponding bearing platform, at this time, there is a distance between the second pressing block and the corresponding bearing platform.

[0026] Preferably, the first guide sleeve is installed at the bottom of the bearing platform, a first spring is connected between the first guide sleeve and the mounting plate below the first guide sleeve, and the first spring is sleeved on the outer periphery of the first guide rod; and / or,

[0027] The second guide sleeve is installed at the bottom of the bearing platform, a second spring is connected between the second guide sleeve and the mounting plate below the second guide sleeve, and the second spring is sleeved on the outer periphery of the second guide rod.

[0028] Preferably, the number of grid lines on each battery piece is a, along the variable distance direction, the number of corresponding pressing blocks of the bearing platform at the leading end is at least a, and the number of corresponding pressing blocks of the remaining bearing platforms and the number of limiting members are at least a / 2.

[0029] Preferably, the number of the pressing members corresponding to the first end of the carrier table in the distance changing direction is a+1, and in the rest of the carrier tables, the number of the pressing members corresponding to part of the carrier tables is a / 2, the number of the limiting members corresponding to the carrier tables is a / 2+1, and the number of the pressing members corresponding to the carrier tables adjacent to the carrier tables is a / 2+1, and the number of the limiting members corresponding to the carrier tables is a / 2.

[0030] Preferably, at least one guiding and limiting unit is arranged on each carrier table, and the guiding and limiting unit comprises a plurality of guiding and limiting members arranged along the width direction of the solder strip, and each guiding and limiting member in each guiding and limiting unit is arranged one-to-one corresponding to each solder strip placed on the carrier table.

[0031] Preferably, the guiding and limiting member comprises two guiding and limiting blocks arranged at intervals along the width direction of the solder strip, and the interval is not less than the width of the solder strip, and the solder strip passes through the interval between the two guiding and limiting blocks.

[0032] A solder strip manufacturing device, comprising any of the above-mentioned devices.

[0033] A battery piece arrangement module for arranging battery pieces.

[0034] A solder strip conveying module for conveying the solder strip manufactured by the solder strip manufacturing device to be arranged on the battery piece.

[0035] A welding module for welding the solder strip on the battery piece.

[0036] Preferably, the battery piece arrangement module comprises a battery piece loading unit, a moving adsorption carrier table and a dispensing unit.

[0037] The battery piece loading unit places the battery piece on the moving adsorption carrier table, the moving adsorption carrier table carries a plurality of battery pieces to the dispensing unit to dispense each battery piece, and then the moving adsorption carrier table carries a plurality of battery pieces to the inner side of the solder strip manufacturing device, and the solder strip manufactured by the solder strip manufacturing device is conveyed and arranged on the dispensing point of the corresponding battery piece by the solder strip conveying module; or,

[0038] The dispensing unit is arranged at the battery piece loading unit, and after the battery piece is dispensed by the dispensing unit, the battery piece is placed on the moving adsorption carrier table by the battery piece loading unit, the moving adsorption carrier table carries a plurality of battery pieces to the inner side of the solder strip manufacturing device, and the solder strip manufactured by the solder strip manufacturing device is conveyed and arranged on the dispensing point of the corresponding battery piece by the solder strip conveying module.

[0039] Preferably, further comprising a detection module for detecting the straightness of a plurality of battery pieces placed on the moving adsorption carrier table and the solder strip arranged on the plurality of battery pieces.

[0040] The mobile adsorbing carrier moves to the detection module to detect the straightness of the battery piece, and then moves to the inner side of the welding strip manufacturing device;

[0041] After each welding strip is arranged and fixed on the corresponding battery piece, the mobile adsorbing carrier moves to the detection module again to detect the straightness of the welding strip arranged and fixed on the battery piece.

[0042] Preferably, the battery string carrying module is further included;

[0043] The welding module is arranged on the inner side of the welding strip manufacturing device, each welding strip is arranged and fixed on the corresponding battery piece, and then the welding module welds each welding strip on the corresponding battery piece to obtain a battery string, and the battery string carrying module carries and arranges the battery string on the back plate; or,

[0044] The welding module is arranged on the inner side of the welding strip manufacturing device, each welding strip is arranged and fixed on the corresponding battery piece, and then the battery string carrying module carries and arranges each welding strip and each battery piece on the back plate, and the welding module welds each welding strip on the corresponding battery piece.

[0045] Preferably, the battery piece arranging module includes a battery piece loading unit and a glue dispensing unit, the battery piece loading unit arranges the battery piece on the back plate, and the glue dispensing unit dispenses glue on the battery piece before or after the battery piece is arranged on the back plate;

[0046] The back plate carrying a plurality of battery pieces moves to the inner side of the welding strip manufacturing device, and the welding strip manufacturing device manufactured by the welding strip carrying module is carried and arranged on the glue dispensing point of the corresponding battery piece;

[0047] The welding module is arranged on the inner side of the welding strip manufacturing device, and each welding strip is welded on the corresponding battery piece by the welding module.

[0048] Preferably, the welding strip carrying module includes a driving member and a plurality of clamping mechanisms arranged side by side along the length direction of the welding strip, each clamping mechanism includes an irradiation part and at least four clamping assemblies arranged along the length direction of the welding strip, each clamping assembly includes a plurality of clamping jaw units arranged along the width direction of the welding strip, and the driving member drives the clamping jaw units to clamp or release the welding strip;

[0049] The clamping assemblies of each clamping mechanism cooperate with each other, so that the two ends of at least the first polarity welding strip and the two ends of the second polarity welding strip are clamped or released by the corresponding clamping jaw units;

[0050] When each welding strip is carried and arranged on the corresponding battery piece, the irradiation part irradiates each glue dispensing point, so that each welding strip string is fixed on the corresponding battery piece.

[0051] Preferably, two solder strip manufacturing devices are oppositely arranged along the conveying direction of the back plate, and each solder strip manufacturing device is correspondingly provided with a solder strip conveying module, so that the back plate is conveyed between the two solder strip manufacturing devices when arranging the solder strips.

[0052] The beneficial effects of the present application are that: along the variable distance direction, when cutting the first solder strips and the second solder strips, the leading end of each first polarity solder strip to be cut off and the leading end of each second polarity solder strip to be cut off are pressed on the corresponding loading table by the corresponding pressing members, and during the variable distance process after cutting off each first solder strip and each second solder strip, the leading end of each first polarity solder strip and the leading end of each second polarity solder strip are pressed on the corresponding loading table by the corresponding pressing members, so as to prepare the first polarity solder strips and the second polarity solder strips arranged in an interlaced manner. The present application can arrange each first polarity solder strip and each second polarity solder strip at the preset position of the battery piece at the same solder strip arranging station, improve the precision and stability of the solder strip arrangement, and reduce the cost and equipment space. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0054] The structures, proportions, sizes, etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, to enable those skilled in the art to understand and read, and are not used to limit the conditions that can be implemented by the present application. Therefore, any modification of the structure, change of the proportion relationship or adjustment of the size, which does not affect the effects that can be produced by the present application and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present application.

[0055] Figure 1 A structural schematic diagram of the solder strip manufacturing device provided by the present application is shown in the following figure:

[0056] Figure 2 Another structural schematic diagram of the solder strip manufacturing device provided by the present application is shown in the following figure:

[0057] Figure 3 A structural schematic diagram of the solder strip manufacturing device provided by the present application is shown in the following figure: Figure 2 A structural schematic diagram of the solder strip manufacturing device provided by the present application is shown in the following figure:

[0058] Figure 4 A structural schematic diagram of the solder strip manufacturing device provided by the present application is shown in the following figure: Figure 2 Another structural schematic diagram of the solder strip manufacturing device provided by the present application is shown in the following figure:

[0059] Figure 5 A structural schematic diagram of the solder strip manufacturing device provided by the present application is shown in the following figure:Figure 2 Another structural schematic view of the middle part of the bearing platform;

[0060] Figure 6 A structural schematic view of the compression member provided in the present application;

[0061] Figure 7 A structural schematic view of the limiting member provided in the present application;

[0062] Figure 8 A schematic view of the welding strip manufacturing device compatible with different welding strip string manufacturing provided in the present application;

[0063] Figure 9 A structural schematic view of the string welding system provided in the present application;

[0064] Figure 10 A structural schematic view of the welding strip manufacturing device provided in the present application; Figure 9 A structural schematic view of the welding strip conveying module.

[0065] In the figure: 1-welding strip; 11-first polarity welding strip; 12-second polarity welding strip; 2-base; 21-guide rail; 3-bearing platform; 31-compression member; 311-first guide rod; 312-first guide sleeve; 313-first pressing block; 314-first helical guide groove; 315-first guide shaft; 316-first spring; 32-adapter plate; 33-sliding block; 34-limiting member; 341-second guide rod; 342-second guide sleeve; 343-second pressing block; 344-second helical guide groove; 345-second guide shaft; 346-second spring; 35-mounting plate; 36-guide limiting member; 361-guide limiting block; 37-driving mechanism; 4-variable distance unit; 41-first variable distance rod; 411-first connecting end; 412-first movable end; 413-variable distance limiting part; 421-second connecting end; 422-second movable end; 423-elastic member; 5-first cutting unit; 51-first cutting member; 6-second cutting unit; 61-second cutting member; 7-welding strip pulling mechanism;

[0066] 100-welding strip manufacturing device; 200-battery piece arrangement module; 210-battery piece feeding unit; 220-moving adsorption loading platform; 230-gelatinizing unit; 300-welding strip conveying module; 310-clamping mechanism; 320-irradiation part; 330-clamping assembly; 400-welding module; 500-battery string conveying module; 600-detection module. DETAILED DESCRIPTION

[0067] The embodiments of the present application will be described below in detail with the accompanying drawings. It is obvious that the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0068] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with the accompanying drawings and specific embodiments.

[0069] For the convenience of description, the embodiments of the present application divide the uncut solder strips placed on the solder strip manufacturing device into first solder strips and second solder strips, the first solder strips and the second solder strips are arranged alternately along the width direction of the solder strips, the first solder strips are named as first polarity solder strips after being cut, and the second solder strips are named as second polarity solder strips after being cut.

[0070] Reference Figures 1-7 The present application provides a solder strip manufacturing device 100, which comprises a base 2 and a plurality of bearing platforms 3 arranged side by side on the base 2 along the length direction of the solder strips 1, two adjacent bearing platforms 3 are connected through a variable distance unit 4, and the bearing platforms 3 are used for placing a plurality of first solder strips and second solder strips;

[0071] A first cutting unit 5 or a second cutting unit 6 is arranged between two adjacent bearing platforms 3, the first cutting unit 5 and the second cutting unit 6 are arranged alternately along the length direction of the solder strips 1, the first cutting unit 5 is used for cutting the first solder strips, and the second cutting unit 6 is used for cutting the second solder strips;

[0072] Each bearing platform 3 is provided with a plurality of pressing members 31 along the width direction of the solder strips 1;

[0073] After the first solder strips are cut into a plurality of first polarity solder strips 11 by the first cutting unit 5 and the second solder strips are cut into a plurality of second polarity solder strips 12 by the second cutting unit 6, the variable distance unit 4 moves along the variable distance direction, so that each of the first polarity solder strips 11 and each of the second polarity solder strips 12 has a preset interval along the length direction of the solder strips 1; and along the variable distance direction, when the first solder strips are cut, the leading end of each first polarity solder strip 11 to be cut off is pressed on the corresponding bearing platform 3 by the corresponding pressing member 31, when the second solder strips are cut, the leading end of each second polarity solder strip 12 to be cut off is pressed on the corresponding bearing platform 3 by the corresponding pressing member 31, and when the variable distance is changed, the leading end of each first polarity solder strip 11 and the leading end of each second polarity solder strip 12 are pressed on the corresponding bearing platform 3 by the corresponding pressing member 31.

[0074] When the solder strips 1 are manufactured, the solder strip releasing mechanism (not shown in the figure) is arranged at one end of the base 2 along the length direction of the solder strips 1, and the solder strip pulling mechanism 7 is arranged on the base 2 and can move back and forth along the length direction of the solder strips 1 at both ends of the base 2; a certain number of first solder strips and second solder strips are released by the solder strip releasing mechanism, the solder strip pulling mechanism 7 moves to the end of the base 2 close to the solder strip releasing mechanism, clamps each first solder strip and each second solder strip, and then moves from the end of the base 2 close to the solder strip releasing mechanism to the end of the base 2 away from the solder strip releasing mechanism to pull out the first solder strips and the second solder strips with a preset length, and each first solder strip and each second solder strip are placed on the loading table 3.

[0075] In the process of pulling out the solder strips 1, each first solder strip and each second solder strip can be pulled out by the solder strip pulling mechanism 7 at the same time, or can be pulled out at different times, for example, each first solder strip can be pulled out and placed on the loading table 3 first, and then each second solder strip can be pulled out and placed on the loading table 3.

[0076] Each first solder strip and each second solder strip are placed alternately on the loading table 3, so as to subsequently manufacture the first polarity solder strips 11 and the second polarity solder strips 12 arranged in an interlaced manner.

[0077] In the embodiment, each first solder strip between adjacent two loading tables 3 is cut by the first cutting unit 5, and each first solder strip is cut into a plurality of first polarity solder strips 11, and each second solder strip between adjacent two loading tables 3 is cut by the second cutting unit 6, and each second solder strip is cut into a plurality of second polarity solder strips 12. Since the first cutting unit 5 and the second cutting unit 6 are arranged alternately along the length direction of the solder strips 1, the cutting points of each first solder strip and the cutting points of each second solder strip are staggered, so that the first polarity solder strips 11 and the second polarity solder strips 12 are formed in an interlaced manner after cutting.

[0078] The specific structure of the first cutting unit 5 and the second cutting unit 6 is not specifically limited in the embodiment, as long as each first solder strip can be cut by the first cutting unit 5 and each second solder strip can be cut by the second cutting unit 6.

[0079] In one of the implementable modes, referring to Figure 4 , the first cutting unit 5 includes a plurality of first cutting pieces 51, each first cutting piece 51 in each first cutting unit 5 is arranged in one-to-one correspondence with each first solder strip; and the second cutting unit 6 includes a plurality of second cutting pieces 61, each second cutting piece 61 in each second cutting unit 6 is arranged in one-to-one correspondence with each second solder strip.

[0080] Specifically, the first cutting member 51 can be a first upper cutter located above the first solder strip, and the first cutting unit 5 further comprises a first lower cutter located below the solder strip 1, and each first solder strip is cut off through the cooperation of each first upper cutter and first lower cutter; correspondingly, the second cutting member 61 can be a second upper cutter located above the second solder strip, and the second cutting unit 6 further comprises a second lower cutter located below the solder strip 1, and each second solder strip is cut off through the cooperation of each second upper cutter and second lower cutter.

[0081] It can be understood that in the process of pulling the solder strip, each first upper cutter and each second upper cutter deviates from the pulling path of the solder strip, so that each solder strip 1 can be pulled out and placed on the bearing table 3, and when cutting the solder strip, each first upper cutter and each second upper cutter moves above the corresponding solder strip 1 to cut off the corresponding solder strip 1.

[0082] Alternatively, the first cutting member 51 and the second cutting member 61 are both cutters, and the cutters are moved from one side of the solder strip 1 to the other side to cut off the corresponding solder strip 1.

[0083] In the preferred embodiment, when cutting the solder strip 1, each first cutting member 51 and each second cutting member 61 can act simultaneously to cut off each first solder strip and each second solder strip at the same time. Of course, they can also not act at the same time, for example, after each first cutting member 51 cuts off each first solder strip, each second cutting member 61 cuts off each second solder strip.

[0084] When each first solder strip and each second solder strip is arranged alternately on the bearing table 3, along the variable distance direction, the leading end of each first polarity solder strip 11 to be cut off and the leading end of each second polarity solder strip 12 to be cut off are pressed on the corresponding bearing table 3 by the corresponding pressing member 31, and then the first solder strip and the second solder strip are cut off to prevent the position of the first solder strip and the second solder strip from deviating during cutting and to enable the cutting to proceed smoothly. After cutting, the leading end of each first polarity solder strip 11 and the leading end of each second polarity solder strip 12 are still pressed on the corresponding bearing table 3, and then the variable distance unit 4 moves along the variable distance direction to change the distance between adjacent two bearing tables 3, so that there is a predetermined distance between adjacent two first polarity solder strips 11 along the length direction of the solder strip 1 and between adjacent two second polarity solder strips 12.

[0085] The variable distance direction of the embodiment can be that one bearing table 3 at the end does not move, and the remaining bearing tables 3 move along the same direction.

[0086] Next, the variable distance of the embodiment of the application will be described in detail along the arrow direction shown in the following figure. Figure 2

[0087] ​In a preferred embodiment, the strip production device 100 of the present application further comprises a variable-distance driving member (not shown in the drawings), the power output end of which is connected to the first end of the bearing table 3 along the variable-distance direction (i.e. the left end of the bearing table 3 in the middle) Figure 2 The variable-distance driving member drives the bearing table 3 connected thereto to move along the variable-distance direction, so that each variable-distance unit 4 changes the distance between the adjacent two bearing tables 3.

[0088] More specifically, referring to Figure 2 and Figure 3 , the variable-distance unit 4 comprises a first variable-distance rod 41 and a second variable-distance rod 42, the first variable-distance rod 41 has a first connecting end 411 and a first movable end 412, and the second variable-distance rod 42 has a second connecting end 421 and a second movable end 422.

[0089] Along the width direction of the strip 1, at least one side of each bearing table 3 is connected to an adapter plate 32;

[0090] The first connecting end 411 and the second connecting end 421 are fixedly connected to the adapter plate 32 away from the variable-distance driving member, the first movable end 412 penetrates the adapter plate 32 close to the variable-distance driving member and is movably connected to the adapter plate 32, and the end of the first movable end 412 close to the variable-distance driving member is provided with a variable-distance limiting part 413;

[0091] Before variable distance, the second movable end 422 abuts against the adapter plate 32 close to the variable-distance driving member, at this time, the variable-distance limiting part 413 has a preset distance with the adapter plate 32 penetrated by the first movable end 412, and after variable distance, the variable-distance limiting part 413 abuts against the adapter plate 32 penetrated by the first movable end 412, at this time, the second movable end 422 has a preset distance with the adapter plate 32 close to the variable-distance driving member; or,

[0092] Referring to Figure 3 , the second movable end 422 is connected to the adapter plate 32 close to the variable-distance driving member through an elastic member 423, before variable distance, the elastic member 423 is in a first form, at this time, the variable-distance limiting part 413 has a preset distance with the adapter plate 32 penetrated by the first movable end 412, and after variable distance, the elastic member 423 is in a second form, at this time, the variable-distance limiting part 413 abuts against the adapter plate 32 penetrated by the first movable end 412.

[0093] Preferably, the second movable end 422 is connected to the adapter plate 32 near the pitch changing driving member through the elastic member 423, so that the pitch changing stability is better. The elastic member 423 can be a spring. Before the pitch changing, the bearing platforms 3 are close to each other, and the first form of the elastic member 423 can be a compressed state. After the pitch changing, the bearing platforms 3 have a certain spacing, and the second form of the elastic member 423 can be an initial state (zero elastic deformation) or a stretched state. Alternatively, before and after the pitch changing, the first form and the second form are both in a stretched state, but the stretching amount is different, and the stretching amount in the second form is greater than that in the first form.

[0094] During the pulling and welding of the welding strip 1 and the placing of the welding strip 1, the elastic member 423 is in the first form, and the pitch changing limiting part 413 has a preset spacing with the adapter plate 32 penetrated by the first movable end 412. After cutting the first welding strips and the second welding strips, the pitch changing driving member drives the bearing platform 3 connected thereto to move along the pitch changing direction, and the elastic member 423 between the bearing platforms 3 changes from the first form to the second form, and the pitch changing limiting part 413 abuts against the adapter plate 32 penetrated by the first movable end 412 (see Figure 2 and Figure 3 ), so as to change the spacing between the adjacent two bearing platforms 3, so that the adjacent two first polarity welding strips 11 and the adjacent two second polarity welding strips 12 along the length direction of the welding strip 1 have a preset spacing. It can be understood that during the pitch changing, the position of the bearing platform 3 at the tail end along the pitch changing direction remains unchanged.

[0095] Along the width direction of the welding strip 1, one adapter plate 32 can be arranged on each side of each bearing platform 3, and the two sides of the adjacent two bearing platforms 3 are connected through the pitch changing unit 4, or only one adapter plate 32 can be arranged on one side of the bearing platform 3, and one side of the adjacent two bearing platforms 3 is connected through the pitch changing unit 4. Preferably, only one adapter plate 32 is arranged on one side of the bearing platform 3 in the embodiment, and one side of the adjacent two bearing platforms 3 is connected through the pitch changing unit 4.

[0096] The pitch changing driving member of the embodiment can be a gas cylinder, an oil cylinder, etc., and is not specifically limited.

[0097] The structure of the adapter plate 32 of the embodiment can be designed as a U-shaped structure as shown in Figure 3 , and the pitch changing limiting part 413 is located in the hollow of the U-shaped structure.

[0098] In a further preferred embodiment, reference is made to Figure 1 and Figure 4Each bearing table 3 is slidably connected with the base 2 through a guide, so as to guide the variable-distance movement of the bearing table 3, and the variable-distance stability is higher.

[0099] In one embodiment, the guide comprises a guide rail 21 arranged on the base 2 along the length direction of the welding strip 1, and each bearing table 3 is slidably connected with the guide rail 21 through a sliding block 33. More preferably, along the length direction of the welding strip 1, the guide rail 21 can be arranged on both sides of the base 2, and each bearing table 3 is provided with a sliding block 33 on both sides, and each sliding block 33 is slidably connected with the corresponding guide rail 21.

[0100] In order to further prevent the position of the welding strip 1 from deviating during the cutting and variable-distance movement, referring to Figures 2-4 , along the variable-distance direction, each bearing table 3 except the one at the head end is provided with a plurality of limiting members 34 along the length direction of the welding strip 1, and each pressing member 31 and each limiting member 34 of each bearing table 3 are alternately arranged along the width direction of the welding strip 1, so that the tail end of each first polarity welding strip 11 except the second polarity welding strip 12 at the head end and tail end and the tail end of each second polarity welding strip 12 are limited by the corresponding limiting members 34.

[0101] As shown in Figure 3 , along the length direction of the welding strip 1, the length of the second polarity welding strip 12 at the head end and tail end is shorter than that of the other first polarity welding strip 11 and second polarity welding strip 12. Therefore, the second polarity welding strip 12 at the head end and tail end only needs to be pressed on the bearing table 3 by the corresponding pressing member 31 to ensure that its position will not deviate during the variable-distance movement. The head end of each first polarity welding strip 11 and each second polarity welding strip 12 is pressed by the corresponding pressing member 31, and the tail end is limited by the corresponding limiting member 34, so that the position of each welding strip will not deviate during the cutting and variable-distance movement.

[0102] Referring to Figure 5 , each pressing member 31 and each limiting member 34 of the embodiment penetrates through the corresponding bearing table 3, and each bearing table 3 is provided with a mounting plate 35 below;

[0103] Along the variable-distance direction, all the pressing members 31 corresponding to the bearing table 3 at the head end are mounted on the mounting plate 35 below the bearing table 3, and all the pressing members 31 and all the limiting members 34 corresponding to each bearing table 3 except the one at the head end are mounted on the mounting plate 35 below the corresponding bearing table 3.

[0104] Further, the pressing member 31 and the limiting member 34 should deviate from the path of placing the solder strip 1 during the pulling and placing of the solder strip 1, so as not to affect the placement of the solder strip 1, and when the solder strip 1 is placed on the bearing table 3, the pressing member 31 and the limiting member 34 move to the path of placing the solder strip 1, so as to press and limit the solder strip 1.

[0105] Specifically, the structure of the pressing member 31 and the limiting member 34 can be as follows:

[0106] Reference Figure 6 The pressing member 31 includes a first guide rod 311 penetrating the bearing table 3 and a first guide sleeve 312 sleeved outside the first guide rod 311, the first guide sleeve 312 is installed on the bearing table 3, the bottom of the first guide rod 311 is installed on the corresponding mounting plate 35, the top of the first guide rod 311 is provided with a first pressing block 313, the first pressing block 313 is located above the bearing table 3, the first pressing block 313 extends out of the outer periphery of the first guide sleeve 312, a first spiral guide groove 314 is spirally formed on the outer peripheral wall of the first guide sleeve 312 along the axial direction of the first guide rod 311, a first guide shaft 315 is installed on the first guide rod 311, one end of the first guide shaft 315 is located in the first spiral guide groove 314, and the first guide shaft 315 moves along the first spiral guide groove 314 to make the first guide rod 311 rotate and lift relative to the first guide sleeve 312.

[0107] Reference Figure 7 The limiting member 34 includes a second guide rod 341 penetrating the bearing table 3 and a second guide sleeve 342 sleeved outside the second guide rod 341, the second guide sleeve 342 is installed on the bearing table 3, the bottom of the second guide rod 341 is installed on the corresponding mounting plate 35, the top of the second guide rod 341 is provided with a second pressing block 343, the second pressing block 343 is located above the bearing table 3, the second pressing block 343 extends out of the outer periphery of the second guide sleeve 342, a second spiral guide groove 344 is spirally formed on the outer peripheral wall of the second guide sleeve 342 along the axial direction of the second guide rod 341, a second guide shaft 345 is installed on the second guide rod 341, one end of the second guide shaft 345 is located in the second spiral guide groove 344, and the second guide shaft 345 moves along the second spiral guide groove 344 to make the second guide rod 341 rotate and lift relative to the second guide sleeve 342.

[0108] When the first guide shaft 315 is located at the upper end of the first spiral guide groove 314 and the second guide shaft 345 is located at the upper end of the second spiral guide groove 344, the distance between the first pressing block 313 and the bearing table 3 is smaller than the distance between the second pressing block 343 and the bearing table 3, so that when the first pressing block 313 presses the corresponding solder strip 1 on the bearing table 3, there is a gap between the second pressing block 343 and the solder strip 1 below it, thereby limiting the solder strip 1 through the second pressing block 343 and allowing the distance between each first polarity solder strip 11 and each second polarity solder strip 12 to be variable.

[0109] Before placing each first solder strip and each second solder strip on the bearing table 3, the first guide shaft 315 is located at the upper end of the first spiral guide groove 314 and the second guide shaft 345 is located at the upper end of the second spiral guide groove 344, and the first pressing block 313 and the second pressing block 343 are both offset from the path of the solder strip 1; after placing each first solder strip and each second solder strip on the bearing table 3, the first guide shaft 315 moves from the upper end to the lower end of the first spiral guide groove 314, and the second guide shaft 345 moves from the upper end to the lower end of the second spiral guide groove 344, so that the first pressing block 313 and the second pressing block 343 are both moved above the corresponding solder strip 1, and the first pressing block 313 presses the corresponding solder strip 1 on the corresponding bearing table 3, at this time there is a distance between the second pressing block 343 and the corresponding bearing table 3.

[0110] Reference Figure 5 Each mounting plate 35 is driven by a driving mechanism 37 (such as a pneumatic cylinder), so that the mounting plate 35 can move up and down, along the variable distance direction, the first guide rod 311 mounted on the mounting plate 35 at the leading end moves up and down simultaneously, so that each first pressing block 313 simultaneously deviates from the solder strip placement path and moves upward, or simultaneously moves to the solder strip placement path and moves downward to press the corresponding solder strip 1 on the bearing table 3; each first guide rod 311 and each second guide rod 341 mounted on the remaining mounting plate 35 moves up and down simultaneously, so that each first pressing block 313 and each second pressing block 343 simultaneously deviate from the solder strip placement path and move upward, or simultaneously move to the solder strip placement path and move downward, press the corresponding solder strip 1 on the bearing table 3 through the first pressing block 313, and limit the corresponding solder strip 1 through the second pressing block 343.

[0111] In this embodiment, one driving mechanism 37 can be provided corresponding to each mounting plate 35, that is, each mounting plate 35 is driven individually by the corresponding driving mechanism 37, or all mounting plates 35 are driven by the same driving mechanism 37, so that all pressing members 31 and limiting members 34 move simultaneously.

[0112] In the preferred embodiment, reference Figures 5-7The first guide sleeve 312 is installed at the bottom of the bearing table 3, and the first guide sleeve 312 and the mounting plate 35 below the first guide sleeve 312 are connected by the first spring 316, and the first spring 316 is sleeved on the outer periphery of the first guide rod 311; and / or,

[0113] The second guide sleeve 342 is installed at the bottom of the bearing table 3, and the second guide sleeve 342 and the mounting plate 35 below the second guide sleeve 342 are connected by the second spring 346, and the second spring 346 is sleeved on the outer periphery of the second guide rod 341.

[0114] The first spring 316 and the second spring 346 can buffer the up-down movement of the first guide rod 311 and the second guide rod 341.

[0115] In the embodiment, the number of grid lines on each battery piece is a, along the variable pitch direction, the number of the corresponding compression members 31 of the bearing table 3 at the leading end is at least a, and the number of the corresponding compression members 31 and the number of the limiting members 34 of the remaining bearing tables 3 are each at least a / 2.

[0116] In the embodiment, the battery piece refers to a half piece, the number of grid lines on each battery piece is a, and accordingly, a / 2 first polarity solder strips 11 and a / 2 second polarity solder strips 12 need to be arranged on each battery piece.

[0117] In one of the embodiments of the application, the number of the corresponding compression members 31 of the bearing table 3 at the leading end is a, and the number of the corresponding compression members 31 and the number of the limiting members 34 of the remaining bearing tables 3 are each a / 2. Accordingly, each first cutting unit 5 includes a / 2 first cutting members 51, and each second cutting unit 6 includes a / 2 second cutting members 61. For example, the number of grid lines on the battery piece is 20, the number of the corresponding compression members 31 of the bearing table 3 at the leading end is 20, the number of the corresponding compression members 31 and the number of the limiting members 34 of the remaining bearing tables 3 are each 10, each first cutting unit 5 includes 10 first cutting members 51, and each second cutting unit 6 includes 10 second cutting members 61.

[0118] The solder strip releasing mechanism and the solder strip pulling mechanism 7 cooperate to pull out a / 2 first solder strips and a / 2 second solder strips and place them on the bearing table 3, then the corresponding solder strips 1 are compressed by the compression members 31, the corresponding solder strips 1 are limited by the limiting members 34, then the corresponding solder strips 1 are cut off by the first cutting members 51 and the second cutting members 61 at the same time or at different times, the first polarity solder strips 11 and the second polarity solder strips 12 arranged alternately are obtained, the variable pitch unit moves to make each first polarity solder strip 11 and each second polarity solder strip 12 along the length direction of the solder strip 1 have a preset interval, and thus a solder strip string is obtained.

[0119] It can be understood that the photovoltaic module includes positive cell strings and negative cell strings arranged alternately along the width direction of the solder strip 1, and the positive cell strings and the negative cell strings are in a mirror image relationship, so that the solder strip string arranged on the positive cell string (denoted as A solder strip string) and the solder strip string arranged on the negative cell string (denoted as B solder strip string) are also in a mirror image relationship. Therefore, in this embodiment, the solder strip manufacturing device 100 can only manufacture the A solder strip string or the B solder strip string, and cannot realize the compatibility of manufacturing the A solder strip string and the B solder strip string.

[0120] In another embodiment of the present application, along the variable distance direction, the number of the corresponding compression members 31 of the bearing table 3 at the first end is a+1, in the rest of the bearing tables 3, the number of the corresponding compression members 31 of part of the bearing tables 3 is a / 2, the number of the corresponding limit members 34 is a / 2+1, and the number of the corresponding compression members 31 of the bearing table 3 adjacent to it is a / 2+1, the number of the corresponding limit members 34 is a / 2.

[0121] Figure 2 In the embodiment, 12 bearing tables 3 are sequentially arranged along the length direction of the solder strip 1. In order to better explain the embodiment in detail, the bearing tables 3 from left to right are sequentially named as A1, A2, A3, …, A12. Figure 2 In the embodiment, 12 bearing tables 3 are sequentially arranged along the length direction of the solder strip 1. In order to better explain the embodiment in detail, the bearing tables 3 from left to right are sequentially named as A1, A2, A3, …, A12.

[0122] In one of the implementable modes, the solder strip releasing mechanism and the solder strip pulling mechanism 7 can pull out a / 2 first solder strips and a / 2+1 second solder strips in cooperation, that is, one more second solder strip can be pulled out. At this time, a+1 compression members 31 are correspondingly provided at A1, a / 2+1 compression members 31 and a / 2 limit members 34 are correspondingly provided at A2, a / 2 compression members 31 and a / 2+1 limit members 34 are correspondingly provided at A3, and so on, so as to complete the setting of the compression members 31 and the limit members 34 of each bearing table 3. In this mode, in addition to the bearing table 3 at the first end, the bearing tables 3 at the even positions are correspondingly provided with a / 2+1 compression members 31 and a / 2 limit members 34, and the bearing tables 3 at the odd positions are correspondingly provided with a / 2 compression members 31 and a / 2+1 limit members 34. Correspondingly, each second cutting unit 6 includes a / 2+1 second cutting members 61, and each first cutting unit 5 includes a / 2 first cutting members 51.

[0123] In another implementable manner, the solder strip releasing mechanism and the solder strip pulling mechanism 7 can cooperate to pull out a / 2+1 first solder strips and a / 2 second solder strips, that is, one more first solder strip can be pulled out. At this time, a+1 pressing members 31 are provided at A1, a / 2 pressing members 31 and a / 2+1 limiting members 34 are provided at A2, a / 2+1 pressing members 31 and a / 2 limiting members 34 are provided at A3, and so on, so as to complete the setting of the pressing members 31 and the limiting members 34 of each bearing platform 3. In this manner, in addition to the first bearing platform 3, the even-numbered bearing platforms 3 are each provided with a / 2 pressing members 31 and a / 2+1 limiting members 34, and the odd-numbered bearing platforms 3 are each provided with a / 2+1 pressing members 31 and a / 2 limiting members 34. Correspondingly, each first cutting unit 5 includes a / 2+1 first cutting members 51, and each second cutting unit 6 includes a / 2 second cutting members 61.

[0124] The present embodiment is provided with one more first solder strip positions or second solder strip positions at the solder strip releasing mechanism, the solder strip pulling mechanism 7 and the solder strip manufacturing device 100. When A solder strip string needs to be manufactured, the solder strip releasing mechanism and the solder strip pulling mechanism 7 cooperate to pull out a / 2 first solder strips and a / 2 second solder strips required for manufacturing the A solder strip string, and place them at the corresponding positions on the bearing platform 3 of the solder strip manufacturing device 100, so as to complete the preparation of the A solder strip string; when B solder strip string needs to be manufactured, the solder strip releasing mechanism and the solder strip pulling mechanism 7 cooperate to pull out a / 2 first solder strips and a / 2 second solder strips required for manufacturing the B solder strip string, and place them at the corresponding positions on the bearing platform 3 of the solder strip manufacturing device 100, so as to complete the preparation of the B solder strip string. In this manner, the preparation of the A solder strip string and the B solder strip string can be compatible.

[0125] Compared with the existing solder strip manufacturing device, the solder strip manufacturing device of the present embodiment can be provided with only one solder strip arrangement station, improve the solder strip manufacturing and arrangement efficiency, improve the stability of the solder strip arrangement, reduce the cost and the occupied space of the equipment, whether the preparation of the A solder strip string and the B solder strip string is compatible or not. If the preparation of the A solder strip string and the B solder strip string is compatible, the solder strip manufacturing device can be arranged on one side or both sides of the solder strip arrangement station along the length direction of the solder strip; if the preparation of the A solder strip string and the B solder strip string is not compatible, the solder strip manufacturing device can be arranged on both sides of the solder strip arrangement station along the length direction of the solder strip, so as to manufacture the A solder strip string by using one solder strip manufacturing device and manufacture the B solder strip string by using the other solder strip manufacturing device.

[0126] Figure 8The schematic diagram of setting one second solder strip position is shown, and the second solder strips are sequentially named as 1, 2, 3, …, 13 from bottom to top. When the A solder strip string is made, the second solder strips with labels 1-12 and 12 first solder strips are pulled out, and the pulled-out first solder strips and second solder strips are cut and distance-changed on the solder strip making device 100; when the B solder strip string is made, the second solder strips with labels 2-13 and 12 first solder strips are pulled out, and the pulled-out first solder strips and second solder strips are cut and distance-changed on the solder strip making device 100.

[0127] In a further preferred embodiment, referring to Figure 3 At least one guide limiting unit is arranged on each bearing table 3, and the guide limiting unit comprises a plurality of guide limiting pieces 36 arranged along the width direction of the solder strip 1. Each guide limiting piece 36 in each guide limiting unit is arranged in one-to-one correspondence with each solder strip 1 placed on the bearing table 3.

[0128] Each solder strip 1 is pulled out along the guide limiting piece 36 and placed on the bearing table 3 to avoid the position of the solder strip 1 placed on the bearing table 3 from being deviated.

[0129] The guide limiting piece 36 of the embodiment can comprise two guide limiting blocks 361 arranged at intervals along the width direction of the solder strip 1, as shown in Figure 4 The interval between the two guide limiting blocks 361 is not less than the width of the solder strip 1, so that the solder strip 1 can pass through the interval between the two guide limiting blocks 361.

[0130] During the process of pulling the solder strip 1 from one end of the base 2 to the other end, each solder strip 1 is pulled out along the interval of the corresponding guide limiting piece 36 on each bearing table 3 and placed on the bearing table 3 along the corresponding interval.

[0131] In a preferred embodiment, guide limiting units are arranged at both ends of each bearing table 3 along the length direction of the solder strip 1, and the top of each guide limiting block 361 is arranged as a tapered structure to better limit and guide the position of the solder strip 1 pulled out and placed on the bearing table 3.

[0132] The embodiment of the application also provides a string welding system, referring to Figures 9-10 which comprises the aforementioned solder strip making device 100, and further comprises:

[0133] A battery piece arrangement module 200 is arranged for arranging battery pieces;

[0134] A solder strip carrying module 300 is arranged for carrying and arranging the solder strip 1 made by the solder strip making device 100 on the battery piece group;

[0135] A welding module 400 is arranged for welding the solder strip 1 on the battery piece.

[0136] The battery piece arrangement module 200 can arrange at least one battery piece group each time, each battery piece group includes a plurality of battery pieces arranged in sequence along the length direction of the welding belt 1 (i.e. the number of battery pieces required by one battery string), the welding belt string is made by the welding belt making device 100, and then the welding belt string is arranged on the battery piece group by the welding belt carrying module 300, and the welding belt 1 is welded on the corresponding battery piece by the welding module 400.

[0137] The welding module 400 can be resistance welding, laser welding, etc. Preferably, the welding module 400 is laser welding.

[0138] In one embodiment, with reference to Figure 9 The battery piece arrangement module 200 includes a battery piece feeding unit 210, a mobile adsorption platform 220 and a dispensing unit 230.

[0139] The battery piece feeding unit 210 can include a correction platform and a mechanical hand, after the battery piece is corrected by the correction platform, the battery piece is carried to the mobile adsorption platform 220 by the mechanical hand.

[0140] The battery piece is placed on the mobile adsorption platform 220 by the battery piece feeding unit 210, the mobile adsorption platform 220 carries a plurality of battery pieces to the dispensing unit 230 to dispense each battery piece, and then the mobile adsorption platform 220 carries a plurality of battery pieces to the inside of the welding belt making device 100, and the welding belt 1 made by the welding belt making device 100 is carried and arranged on the dispensing point of the battery piece by the welding belt carrying module 300.

[0141] Preferably, the number of battery pieces required by one battery piece group is placed on the mobile adsorption platform 220 by the battery piece feeding unit 210 in sequence, and then transmitted to the subsequent process for processing.

[0142] In this way, the dispensing unit 230 can be arranged on the moving path of the mobile adsorption platform 220 moving to the inside of the welding belt making device 100, after each battery piece is placed on the mobile adsorption platform 220, the mobile adsorption platform 220 carries the battery pieces in sequence through the dispensing unit 230, and the battery piece moves below the dispensing unit 230 is dispensed by the dispensing unit 230, so that each battery piece on the mobile adsorption platform 220 can be continuously dispensed.

[0143] Alternatively, the dispensing unit 230 can be arranged at the battery piece loading unit 210, and after the battery piece is dispensed by the dispensing unit 230, the battery piece is placed on the moving adsorption table 220 by the battery piece loading unit 210, and the moving adsorption table 220 carries a plurality of battery pieces (preferably, the number of battery pieces required by one battery piece group) to the inside of the welding ribbon manufacturing device 100, and the welding ribbon manufacturing device 100 is arranged on the dispensing point of the corresponding battery piece by the welding ribbon conveying module 300.

[0144] Specifically, after the battery piece is corrected on the correction platform, the battery piece is dispensed by the dispensing unit 230, and then the battery piece is arranged on the moving adsorption table 220 by the robot. Compared with the former mode, this mode cannot realize continuous dispensing of multiple battery pieces, and the efficiency is low.

[0145] The glue dispensed on the battery piece by the dispensing unit 230 can be UV glue, and the welding ribbon is fixed on the battery piece by UV curing before welding.

[0146] In the embodiment, each battery piece of one battery piece group is placed on the moving adsorption table 220, and after the welding ribbon string is conveyed and fixed on the battery piece group on the moving adsorption table 220, the welding ribbon string and the battery piece group need to be conveyed together to the back plate by the battery string conveying module 500.

[0147] Along the length direction of the welding ribbon 1, the welding ribbon manufacturing device 100 and the welding ribbon conveying module 300 can be arranged on one side of the back plate placement area, and the inside of the welding ribbon manufacturing device 100 of the embodiment refers to the area between the back plate placement area and the welding ribbon manufacturing device 100. During string welding, the back plate is placed in the back plate placement area, and the moving adsorption table 220 carries the battery piece group to move between the back plate placement area and the welding ribbon manufacturing device 100; the welding ribbon conveying module 300 can move back and forth between the welding ribbon manufacturing device 100 and the moving adsorption table 220, so as to convey the welding ribbon string prepared by the welding ribbon manufacturing device 100 to the battery piece group on the moving adsorption table 220; the battery string conveying module 500 can move back and forth between the moving adsorption table 220 and the back plate, so as to convey the welding ribbon string and the battery piece group from the moving adsorption table 220 to the back plate.

[0148] The welding module 400 can be arranged on the inner side of the welding ribbon manufacturing device 100. After the welding ribbons 1 are arranged and fixed on the corresponding battery sheets, the welding module 400 welds the welding ribbons 1 on the corresponding battery sheets to obtain the battery string, and the battery string carrying module 500 carries and arranges the battery string on the back plate. It can be understood that the welding module 400 should not affect the movement of the welding ribbon carrying module 300, for example, the horizontal plane where the welding module 400 is located can be higher than the horizontal plane where the welding ribbon carrying module 300 is located, or the welding module 400 is not on the movement track of the welding ribbon carrying module 300 during the process of carrying the welding ribbon string. When the welding ribbon string is placed on the battery sheet group, the welding module 400 moves to the upper side of the moving adsorption platform 220.

[0149] Alternatively, the welding module 400 can be arranged on the inner side of the welding ribbon manufacturing device 100. After the welding ribbons 1 are arranged and fixed on the corresponding battery sheets, the battery string carrying module 500 carries and arranges the welding ribbons 1 and the battery sheets on the back plate, and the welding module 400 welds the welding ribbons 1 on the corresponding battery sheets. In this way, the welding module 400 is arranged above the back plate placement area, the back plate is placed in the back plate placement area, and after the plurality of welding ribbon strings and the battery sheet group required by the photovoltaic module are placed on the back plate, the welding module 400 is used to weld the welding ribbon strings on the corresponding battery sheet group.

[0150] Preferably, on both sides of the back plate placement area along the length direction of the welding ribbon 1, a welding ribbon manufacturing device 100, a welding ribbon carrying module 300 and a battery string carrying module 500 are arranged respectively, and a battery sheet arrangement module 200 is arranged correspondingly. After the back plate is placed in the back plate placement area, the cooperation of the devices on both sides of the back plate placement area can make the string welding more efficient.

[0151] In the preferred embodiment, the string welding system further comprises a detection module 600, which is used to detect the straightness of the plurality of battery sheets placed on the moving adsorption platform 220 and the welding ribbons 1 arranged on the plurality of battery sheets. Specifically, the moving adsorption platform 220 can move to the detection module 600 to detect the straightness of the battery sheets, then move to the inner side of the welding ribbon manufacturing device 100, carry and arrange the welding ribbon string on the battery sheet group by the welding ribbon carrying module 300, and make the UV glue solidify. Then the moving adsorption platform 220 moves to the detection module 600 again to detect the straightness of the welding ribbons 1 arranged and fixed on the battery sheets. Thus, the string welding yield can meet the requirements.

[0152] After each solder strip 1 is fixed on the corresponding cell sheet by UV glue or welded on the corresponding cell sheet, the way of carrying it to the back plate can effectively avoid the problems of poor flatness of the existing EVA film on the back plate, cell sheet hot melt EVA fixed on the back plate EVA shrinkage and glass deformation in the glass deviation correction process, and improve the precision of the solder strip arrangement on the cell sheet.

[0153] In another embodiment, the cell sheet arrangement module 200 includes a cell sheet feeding unit 210 and a dispensing unit 230. The cell sheet feeding unit 210 arranges the cell sheet on the back plate, and the dispensing unit 230 dispenses the cell sheet before or after the cell sheet is arranged on the back plate.

[0154] The back plate carrying a plurality of cell sheets moves to the inside of the solder strip manufacturing device 100, and the solder strip manufacturing device 100 manufactured by the solder strip carrying module 300 carries and arranges the solder strip 1 on the dispensing point of the corresponding cell sheet.

[0155] The welding module 400 is arranged on the inside of the solder strip manufacturing device 100, and each solder strip 1 is welded on the corresponding cell sheet by the welding module 100.

[0156] In this embodiment, the moving adsorption platform 230 and the cell string carrying module 500 are not required. After all the cell sheets required by one photovoltaic module are arranged on the back plate according to the version requirements by the cell sheet feeding unit 210, the back plate carrying the cell sheets moves to the inside of the solder strip manufacturing device 100, and each solder strip string is arranged on the corresponding cell sheet group on the back plate by the solder strip carrying module 300.

[0157] The dispensing unit 230 can be arranged at the cell sheet feeding unit 210, the dispensing unit 230 dispenses the cell sheet after the deviation correction platform corrects the deviation of the cell sheet, and then the cell sheet is carried to the back plate by the mechanical hand. Alternatively, after each cell sheet is arranged on the back plate according to the version required by the photovoltaic module, the dispensing unit 230 dispenses each cell sheet on the back plate in turn.

[0158] More specifically, the back plate carrying each cell sheet after dispensing is conveyed to the back plate placement area inside the solder strip manufacturing device 100, and the solder strip carrying module 300 can move back and forth between the solder strip manufacturing device 100 and the back plate placement area to carry and arrange the solder strip string manufactured by the solder strip manufacturing device 100 on the cell sheet group arranged on the back plate. The welding module 400 is arranged above the back plate placement area, and when each cell sheet group on the back plate is arranged with the solder strip string, the solder strip 1 is welded with the cell sheet by the welding module 400.

[0159] Preferably, along the length direction of the welding strip 1, one welding strip manufacturing device 100 and one welding strip conveying module 300 are arranged on both sides of the back plate placement area. When the back plate carrying the battery pieces is conveyed to the back plate placement area, the welding strip string is arranged on the corresponding battery piece group through the cooperation of the welding strip manufacturing device 100 and the welding strip conveying module 300 on both sides, so as to improve the welding strip arrangement efficiency.

[0160] Further preferably, the welding strip manufacturing device 100 on both sides of the back plate placement area can be compatible with the preparation of A welding strip string and B welding strip string. Correspondingly, the welding strip conveying module 300 on both sides can be compatible with the conveying of A welding strip string and B welding strip string, so as to further improve the welding strip arrangement efficiency. Taking an example of six battery piece groups placed on the back plate, the welding strip manufacturing device 100 and the welding strip conveying module 300 on one side manufacture and arrange the welding strip string close to the three battery piece groups on the side, and the welding strip manufacturing device 100 and the welding strip conveying module 300 on the other side manufacture and arrange the welding strip string for the other three battery piece groups.

[0161] Reference Figure 10 The welding strip conveying module 300 of the embodiment includes a driving member and a plurality of clamping mechanisms 310 arranged side by side along the length direction of the welding strip 1. Each clamping mechanism 310 includes an irradiation part 320 and at least four clamping assemblies 330 arranged along the length direction of the welding strip 1. Each clamping assembly 330 includes a plurality of clamping jaw units arranged along the width direction of the welding strip 1. The driving member drives the clamping jaw units to clamp or release the welding strip 1.

[0162] The clamping assemblies 330 of each clamping mechanism 310 cooperate with each other to clamp or release both ends of the at least first polarity welding strip 11 and both ends of the second polarity welding strip 12 by the corresponding clamping jaw units.

[0163] After the welding strip string is conveyed and arranged on the battery piece group, each dispensing point is irradiated by the irradiation part 320, so that each welding strip 1 is fixed on the corresponding battery piece.

[0164] The welding strip manufacturing device of the embodiment can manufacture the first polarity welding strip and the second polarity welding strip arranged in an interlaced manner. Without arranging two welding strip arrangement stations, the welding strip arrangement efficiency and precision are effectively improved, and the cost and equipment occupied space are reduced.

[0165] The string welding system of the embodiment can effectively improve the string welding efficiency and stability, and improve the welding precision.

[0166] Various embodiments are described in the specification in progressive stages, or in parallel, or in combination of progressive and parallel stages, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between various embodiments can be referred to each other. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the relevant part can be referred to the method part.

[0167] It should be noted that in the description of the present application, it is understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a component disposed therebetween.

[0168] It should also be noted that in this document, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the article or device including the above element.

[0169] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A strip production apparatus, characterized in that, The base and a plurality of bearing platforms arranged side by side on the base along the length direction of the solder strip, the adjacent two bearing platforms are connected through a variable distance unit, the bearing platforms are used for placing a plurality of first solder strips and second solder strips, each first solder strip and each second solder strip are arranged alternately along the width direction of the solder strip; The first cutting unit and the second cutting unit are arranged alternately along the length direction of the solder strip, the first cutting unit is used for cutting the first solder strip, and the second cutting unit is used for cutting the second solder strip; Each bearing platform is provided with a plurality of pressing members along the width direction of the solder strip; After the first solder strip is cut into a plurality of first polarity solder strips through the first cutting unit and the second solder strip is cut into a plurality of second polarity solder strips through the second cutting unit, the variable distance unit moves along the variable distance direction, so that the adjacent two first polarity solder strips and the adjacent two second polarity solder strips along the length direction of the solder strip have a preset interval; and along the variable distance direction, when the first solder strip is cut, the leading end of each first polarity solder strip to be cut off is pressed on the corresponding bearing platform by the corresponding pressing member, when the second solder strip is cut, the leading end of each second polarity solder strip to be cut off is pressed on the corresponding bearing platform by the corresponding pressing member, and when the variable distance is changed, the leading end of each first polarity solder strip and the leading end of each second polarity solder strip are pressed on the corresponding bearing platform by the corresponding pressing member.

2. The apparatus of claim 1, wherein, It also comprises a variable distance driving member, the power output end of the variable distance driving member is connected with the bearing platform located at the leading end along the variable distance direction, and the variable distance driving member drives the bearing platform connected therewith to move along the variable distance direction, so that each variable distance unit moves to change the interval between the adjacent two bearing platforms.

3. The apparatus of claim 2, wherein, The variable distance unit comprises a first variable distance rod and a second variable distance rod, the first variable distance rod has a first connecting end and a first movable end, and the second variable distance rod has a second connecting end and a second movable end; Along the width direction of the solder strip, at least one side of each bearing platform is connected with an adapter plate; The first connecting end and the second connecting end are fixedly connected with the adapter plate away from the variable distance driving member, the first movable end penetrates the adapter plate close to the variable distance driving member and is movably connected with the adapter plate, and the variable distance limiting portion is arranged on the end of the first movable end close to the variable distance driving member; Before the variable distance is changed, the second movable end abuts against the adapter plate close to the variable distance driving member, at this time, the variable distance limiting portion and the adapter plate penetrated by the first movable end have a preset interval, and after the variable distance is changed, the variable distance limiting portion abuts against the adapter plate penetrated by the first movable end, at this time, the second movable end and the adapter plate close to the variable distance driving member have a preset interval; or The second movable end is connected with the adapter plate close to the variable distance driving member through an elastic member, before the variable distance is changed, the elastic member is in a first form, at this time, the variable distance limiting portion and the adapter plate penetrated by the first movable end have a preset interval, and after the variable distance is changed, the elastic member is in a second form, at this time, the variable distance limiting portion abuts against the adapter plate penetrated by the first movable end.

4. The apparatus of claim 1, wherein, Each bearing platform is slidably connected with the base through a guide member.

5. The apparatus of claim 1, wherein, The first cutting unit comprises a plurality of first cutting pieces, each first cutting piece in each first cutting unit is arranged in one-to-one correspondence with each first solder strip; The second cutting unit comprises a plurality of second cutting pieces, each second cutting piece in each second cutting unit is arranged in one-to-one correspondence with each second solder strip.

6. The apparatus of claim 5, wherein, Each first cutting piece and each second cutting piece simultaneously act to simultaneously cut each first solder strip and each second solder strip.

7. The apparatus of claim 1, wherein, Along the variable-distance direction, each carrying table surface except the one at the head end is provided with a plurality of limiting pieces along the width direction of the solder strip, and each pressing piece and each limiting piece of each carrying table surface are alternately arranged along the width direction of the solder strip, so that the tail end of each first polarity solder strip and the tail end of each second polarity solder strip except the second polarity solder strips at the head end and the tail end are limited by the corresponding limiting pieces.

8. The apparatus of claim 7, wherein, Each pressing piece and each limiting piece penetrates through the corresponding carrying table surface, and each carrying table surface is provided with a mounting plate below; Along the variable-distance direction, all the pressing pieces corresponding to the carrying table surface at the head end are mounted on the mounting plate below the carrying table surface, and all the pressing pieces and all the limiting pieces corresponding to each carrying table surface except the one at the head end are mounted on the mounting plate below the corresponding carrying table surface.

9. The apparatus of claim 8, wherein, The pressing piece comprises a first guide rod penetrating through the carrying table surface and a first guide sleeve sleeved outside the first guide rod, the first guide sleeve is mounted on the carrying table surface, the bottom of the first guide rod is mounted on the corresponding mounting plate, the top of the first guide rod is provided with a first pressing block, the first pressing block is located above the carrying table surface, the first pressing block protrudes from the outer periphery of the first guide sleeve, a first spiral guide groove is spirally formed on the outer peripheral wall of the first guide sleeve along the axial direction of the first guide rod, a first guide shaft is mounted on the first guide rod, one end of the first guide shaft is located in the first spiral guide groove, and the first guide shaft moves along the first spiral guide groove to enable the first guide rod to rotate and lift relative to the first guide sleeve; The limiting piece comprises a second guide rod penetrating through the carrying table surface and a second guide sleeve sleeved outside the second guide rod, the second guide sleeve is mounted on the carrying table surface, the bottom of the second guide rod is mounted on the corresponding mounting plate, the top of the second guide rod is provided with a second pressing block, the second pressing block is located above the carrying table surface, the second pressing block protrudes from the outer periphery of the second guide sleeve, a second spiral guide groove is spirally formed on the outer peripheral wall of the second guide sleeve along the axial direction of the second guide rod, a second guide shaft is mounted on the second guide rod, one end of the second guide shaft is located in the second spiral guide groove, and the second guide shaft moves along the second spiral guide groove to enable the second guide rod to rotate and lift relative to the second guide sleeve; When the first guide shaft is located at the upper end of the first spiral guide groove and the second guide shaft is located at the upper end of the second spiral guide groove, the distance between the first pressing block and the carrying table surface is smaller than the distance between the second pressing block and the carrying table surface. Before the first and second welding strips are placed on the bearing table, the first guide shaft is located at the upper end of the first spiral guide groove, the second guide shaft is located at the upper end of the second spiral guide groove, and the first and second pressing blocks are both deviated from the path of placing the welding strips; after the first and second welding strips are placed on the bearing table, the first guide shaft moves from the upper end to the lower end of the first spiral guide groove, and the second guide shaft moves from the upper end to the lower end of the second spiral guide groove, so that the first and second pressing blocks are both moved above the corresponding welding strips, and the first pressing block presses the corresponding welding strip on the corresponding bearing table, at this time, there is a gap between the second pressing block and the corresponding bearing table.

10. The apparatus of claim 9, wherein, The first guide sleeve is installed at the bottom of the bearing table, the first guide sleeve and the mounting plate below it are connected by the first spring, and the first spring is sleeved on the outer periphery of the first guide rod; and / or, The second guide sleeve is installed at the bottom of the bearing table, the second guide sleeve and the mounting plate below it are connected by the second spring, and the second spring is sleeved on the outer periphery of the second guide rod.

11. The apparatus of any of claims 7-10, wherein, The number of grid lines on each battery piece is a, and along the variable distance direction, the number of corresponding pressing members of the bearing table at the leading end is at least a, and the number of corresponding pressing members and the number of limiting members of each remaining bearing table are at least a / 2.

12. The apparatus of claim 11, wherein, Along the variable distance direction, the number of corresponding pressing members of the bearing table at the leading end is a+1, in each of the remaining bearing tables, the number of corresponding pressing members of part of the bearing tables is a / 2, the number of corresponding limiting members is a / 2+1, the number of corresponding pressing members of the bearing table adjacent to it is a / 2+1, and the number of corresponding limiting members is a / 2.

13. The apparatus of any of claims 1-10, wherein, Each bearing table is provided with at least one guide limiting unit, and the guide limiting unit comprises a plurality of guide limiting members arranged along the width direction of the welding strip, and each guide limiting member in each guide limiting unit is arranged one-to-one corresponding to each welding strip placed on the bearing table.

14. The apparatus of claim 13, wherein, The guide limiting member comprises two guide limiting blocks arranged at intervals along the width direction of the welding strip, and the interval is not less than the width of the welding strip, and the welding strip passes through the interval between the two guide limiting blocks.

15. A string welding system characterized by, The welding strip manufacturing device comprises the welding strip manufacturing device according to any one of claims 1-14, and further comprises: A battery piece arrangement module is arranged to arrange the battery pieces; A welding strip carrying module is arranged to carry the welding strips manufactured by the welding strip manufacturing device to the battery pieces; A welding module is arranged to weld the welding strips to the battery pieces.

16. The string welding system of claim 15, wherein, The battery piece arrangement module comprises a battery piece loading unit, a movable adsorption table and a dispensing unit; The battery piece loading unit places the battery pieces on the movable adsorption table, the movable adsorption table carries a plurality of battery pieces to the dispensing unit to dispense each battery piece, and then the movable adsorption table carries a plurality of battery pieces to the inside of the welding strip manufacturing device, and the welding strip carrying module carries the welding strips manufactured by the welding strip manufacturing device to the dispensing points on the corresponding battery pieces; or, The dispensing unit is arranged at the battery piece loading unit. After the battery piece is dispensed by the dispensing unit, the battery piece is placed on the moving adsorption table by the battery piece loading unit. The moving adsorption table carries a plurality of battery pieces to the inside of the welding strip manufacturing device. The welding strip manufacturing device is arranged at the inside of the welding strip manufacturing device. The welding strip manufacturing device is arranged at the inside of the welding strip manufacturing device. The welding strip manufacturing device is arranged at the inside of the welding strip manufacturing device. The welding strip manufacturing device is arranged at the inside of the welding strip manufacturing device.

17. The string welding system of claim 16, wherein, The detection module is further arranged. The detection module is used for detecting the straightness of the plurality of battery pieces placed on the moving adsorption table and the welding strip arranged on the plurality of battery pieces. The moving adsorption table moves to the detection module to detect the straightness of the battery piece, and then moves to the inside of the welding strip manufacturing device. After each welding strip is arranged and fixed on the corresponding battery piece, the moving adsorption table moves to the detection module to detect the straightness of the welding strip arranged and fixed on the battery piece.

18. The string welding system of claim 16, wherein, The battery string carrying module is further arranged. The welding module is arranged at the inside of the welding strip manufacturing device. After each welding strip is arranged and fixed on the corresponding battery piece, the welding module welds each welding strip on the corresponding battery piece to obtain a battery string. The battery string carrying module carries the battery string and arranges it on the back plate; or The welding module is arranged at the inside of the welding strip manufacturing device. After each welding strip is arranged and fixed on the corresponding battery piece, the battery string carrying module carries each welding strip and each battery piece and arranges them on the back plate. The welding module welds each welding strip on the corresponding battery piece.

19. The string welding system of claim 15, wherein, The battery piece arrangement module comprises a battery piece loading unit and a dispensing unit. The battery piece loading unit arranges the battery piece on the back plate. The dispensing unit dispenses the battery piece before or after the battery piece is arranged on the back plate. The back plate carrying a plurality of battery pieces moves to the inside of the welding strip manufacturing device. The welding strip manufacturing device is arranged at the inside of the welding strip manufacturing device. The welding strip manufacturing device is arranged at the inside of the welding strip manufacturing device. The welding strip manufacturing device is arranged at the inside of the welding strip manufacturing device. The welding strip manufacturing device is arranged at the inside of the welding strip manufacturing device. The welding module is arranged at the inside of the welding strip manufacturing device. Each welding strip is welded on the corresponding battery piece by the welding module.

20. The string welding system of any of claims 16-19, wherein, The welding strip carrying module comprises a driving member and a plurality of clamping mechanisms arranged side by side along the length direction of the welding strip. Each clamping mechanism comprises an irradiation part and at least four clamping assemblies arranged along the length direction of the welding strip. Each clamping assembly comprises a plurality of clamping jaw units arranged along the width direction of the welding strip. The driving member drives the clamping jaw units to clamp or release the welding strip. The clamping assemblies of each clamping mechanism cooperate with each other to clamp or release the two ends of at least the first polarity welding strip and the two ends of the second polarity welding strip. When each welding strip is arranged on the corresponding battery piece, the irradiation part irradiates each dispensing point to fix each welding strip on the corresponding battery piece.

21. The string welding system of claim 20, wherein, Along the conveying direction of the back plate, two welding strip manufacturing devices are arranged opposite to each other. Each welding strip manufacturing device is correspondingly provided with a welding strip carrying module, so that the back plate is conveyed between the two welding strip manufacturing devices when the welding strip is arranged.

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