CN114242838A - Series welding equipment and process for solar cell - Google Patents
Series welding equipment and process for solar cell Download PDFInfo
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- CN114242838A CN114242838A CN202111546756.2A CN202111546756A CN114242838A CN 114242838 A CN114242838 A CN 114242838A CN 202111546756 A CN202111546756 A CN 202111546756A CN 114242838 A CN114242838 A CN 114242838A
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- 238000003466 welding Methods 0.000 title claims abstract description 248
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000008569 process Effects 0.000 title claims abstract description 28
- 238000007599 discharging Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 104
- 238000003825 pressing Methods 0.000 claims description 74
- 229910000679 solder Inorganic materials 0.000 claims description 56
- 230000004907 flux Effects 0.000 claims description 26
- 238000005520 cutting process Methods 0.000 claims description 20
- 239000000853 adhesive Substances 0.000 claims description 15
- 230000001070 adhesive effect Effects 0.000 claims description 15
- 238000010008 shearing Methods 0.000 claims description 13
- 238000001179 sorption measurement Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 4
- 238000005476 soldering Methods 0.000 description 20
- 238000012937 correction Methods 0.000 description 11
- 239000003292 glue Substances 0.000 description 9
- 230000009471 action Effects 0.000 description 6
- 238000013519 translation Methods 0.000 description 6
- 230000007306 turnover Effects 0.000 description 6
- 238000012546 transfer Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003028 elevating effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010405 reoxidation reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
- H01L31/188—Apparatus specially adapted for automatic interconnection of solar cells in a module
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses series welding equipment and a series welding process for a solar cell, wherein a welding strip is correspondingly placed with main grid lines of the cell, wherein the corresponding placement comprises the corresponding placement of the welding strip with the main grid lines on the surface of the cell and the corresponding placement of the welding strip with the main grid lines on the bottom surface of the cell; respectively carrying out at least partial preheating on the welding strips which are arranged corresponding to the surface main grid lines and the bottom surface main grid lines of the battery piece; transferring the locally preheated battery piece and the welding strip to the next station, circulating the steps, and welding when the locally preheated battery piece and the welding strip reach the welding position; turning the welded battery string 180 degrees and carrying the battery string to a discharging material box; the invention provides series welding equipment and a series welding process for solar cells, and aims to solve the problem that series welding of the solar cells is poor due to the fact that a welding strip is easy to slip when being clamped in the prior art.
Description
Technical Field
The application belongs to the technical field of solar cell processing, and particularly relates to solar cell series welding equipment and a process thereof.
Background
Solar energy is one of the most promising clean energy sources in renewable energy sources at present, and solar cells are used as the best mode for utilizing the solar energy, and are combined into a cell array in a series or parallel mode through series welding equipment or shingles so as to improve the output power, so that the problem of small voltage and current of a single cell can be effectively solved. The solar cell piece assembly has the defects of splintering, hidden splintering, insufficient soldering, open soldering, over soldering, exposed white, grid breaking, short circuit, bubbles, foreign matters, dirt and the like. The mode of battery interconnection includes:
1) and in the tiling mode, the adjacent battery pieces are mutually overlapped by using the conductive adhesive, namely the front electrode of the battery A is connected with the back electrode of the battery B, the front electrode of the battery B is connected with the back electrode of the battery C, and by analogy, the whole series of batteries are connected in series, the space is eliminated in the mode, and more battery pieces can be placed in the same package.
2) The series welding mode is characterized in that a welding strip is adopted to realize transverse connection of a battery, specifically, when a solar battery piece is welded into a series, a head welding strip is pulled in front of a welding strip clamping jaw, the head welding strip is pulled to a set position after being cut off, a head welding strip carrying shaft moves to the position below a first piece of the battery piece to press the head welding strip and is aligned with the head welding strip, then a series welding battery series transmission line carries the battery piece and the welding strip step advances, and finally a battery piece adsorption carrying part places subsequent battery pieces above the welding strip and at intervals between the front battery piece and the rear battery piece, so that a cycle period is completed. The single series battery string can be formed by the circulation.
However, the existing welding strip clamping jaw is easy to slip when clamping the welding strip, and the clamped welding strip is easy to deviate in the clamping process, so that the welding strip and the battery piece are subjected to welding deviation in the subsequent welding process, and the series welding of the battery piece is poor, and therefore, improvement is needed for overcoming the defects.
Disclosure of Invention
The invention mainly aims at the problems, provides solar cell series welding equipment and a process thereof, and aims to solve the problem that the series welding of the solar cells is poor because the solar cells easily slip when clamping a welding strip in the prior art.
In one aspect, to achieve the above object, the present invention provides a solar cell series welding apparatus, including:
the conveying mechanism is used for conveying the welding strips and the battery pieces;
the battery piece feeding mechanism is used for conveying the battery pieces to the conveying mechanism;
the welding strip conveying mechanism comprises a conveying module arranged along the length direction of a conveying line, a lifting module moving along the length direction of the conveying module and a fixing module for clamping a welding strip, wherein the fixing module comprises a bottom plate, the bottom plate is provided with a clamping port for accommodating the welding strip to extend into corresponding to each group of welding strips, the bottom plate is provided with a push plate and a clamping cylinder of which the output end is connected with the push plate towards the clamping direction, the push plate and the bottom plate are arranged in a sliding manner, the push plate is provided with a penetrating port corresponding to each group of welding strips, a push rod is arranged on the penetrating port, one end of the push rod penetrates through the penetrating port, the other end of the push rod is connected with a pushing seat, a spring is arranged between the pushing seat and the push plate, and each group of pushing seats is provided with a clamping arm which can rotate into the clamping port towards the direction of the clamping port, the middle part of the clamping arm is connected with the bottom plate through a penetrating mandrel; and
and the welding mechanism is used for welding the welding strip on the battery piece.
Furthermore, the lifting module comprises a vertical seat, a sliding block is arranged at the bottom of the vertical seat and is in sliding connection with the carrying module, sliding seats are embedded on two sides of the surface of the vertical seat, and the sliding seats are in sliding connection with two sides of the surface of the vertical seat through guide rails and sliding parts; the lifting cylinder that still is provided with the drive on the face of founding the seat the slide oscilaltion, the slide court the vertical direction of output line is provided with and pushes away the platform, it is used for fixed connection to push away bench the screw hole of bottom plate and hold the notch that the centre gripping cylinder output was worn to establish.
Furthermore, the series welding equipment also comprises a soldering flux smearing mechanism, wherein the soldering flux smearing mechanism comprises a soldering flux containing box, a smearing roller and a carrier roller, at least part of the smearing roller is located in the soldering flux containing box, and the smearing roller is in contact with the bottom surface of the welding strip which is transferred along the conveying line direction.
Furthermore, the series welding equipment further comprises two groups of welding strip pressing mechanisms, each group of welding strip pressing mechanisms comprises vertical plates arranged on two sides, a lower pressing plate is arranged between the vertical plates, an upper pressing plate is arranged above the lower pressing plate, elastic pressing blocks corresponding to the number of the welding strips are arranged on the upper pressing plate, and the upper end of the upper pressing plate is connected with the output end of the lower pressing cylinder.
Furthermore, the series welding equipment further comprises a welding strip fixed-length shearing mechanism, the welding strip fixed-length shearing mechanism comprises a lower cutting seat and an upper cutting seat, a detachable lower cutter is arranged on the lower cutting seat, a detachable upper cutter is arranged on the upper cutting seat corresponding to the lower cutter, the lower cutting seat is connected with the output end of the upper stroke cylinder, and the upper cutting seat is connected with the output end of the lower stroke cylinder.
Further, welding mechanism includes welding bench and welding lamp house, leave the welding passageway that holds the battery piece and weld the area and get into between welding bench and the welding lamp house, the welding bench is the vacuum adsorption seat, the adsorption hole of fixed battery piece is seted up to the up end of vacuum adsorption seat, and the lower terminal surface is provided with the heat conduction seat, several heat conduction fin has on the heat conduction seat, has formed heat dissipation channel between heat conduction fin and the heat conduction fin, the bottom court of heat conduction seat heat dissipation channel is provided with the heat absorption fan.
Further, welding lamp house sliding connection elevating platform, be provided with the jacking cylinder on the elevating platform, the push rod of jacking cylinder is connected the welding lamp house, the bottom of elevating platform is provided with the drive the moving cylinder that the elevating platform set up along the transfer chain direction.
Furthermore, a welding lamp group, a pressing needle group and an air guide group are arranged in the welding lamp box, wherein the welding lamp group comprises a plurality of welding lamps arranged perpendicular to the direction of the welding rods and a welding lamp mounting seat for fixing the plurality of welding lamps, a through hole for allowing the pressing needle group to partially penetrate is formed in the welding lamp mounting seat, the pressing needle group comprises a plurality of rows of pressing needles arranged along the length direction of the welding strip and a pressing needle seat for fixing the plurality of pressing needles, and the pressing needles penetrate through the through hole and extend into the space between the two welding lamps; the air guide group is positioned at the upper end of the needle pressing group.
Further, the needle pressing group is made of a high-temperature material which does not stick to tin.
On the other hand, in order to achieve the above object, the present invention further provides a solar cell tiling process, including:
conducting adhesive is dispensed on the surface and/or the bottom surface of the battery piece, wherein the dispensing of the conducting adhesive comprises continuous or interval dispensing on the main grid line of the battery piece;
laminating adjacent battery pieces by using conductive adhesive, wherein the adjacent battery pieces comprise a front electrode of a battery A connected with a back electrode of a battery B, and the front electrode of the battery B connected with a back electrode of a battery C;
after the bonding is finished, the adhesive is removed, and the next cycle is carried out;
and turning the laminated battery pieces 180 degrees and conveying the laminated battery pieces to a discharging box.
On the other hand, in order to achieve the above object, the invention further provides a solar cell series welding process, which includes:
correspondingly placing the welding strip and the main grid line of the battery piece, wherein the corresponding placement comprises the corresponding placement of the welding strip and the main grid line on the surface of the battery piece and the corresponding placement of the welding strip and the main grid line on the bottom surface of the battery piece;
respectively carrying out at least partial preheating on the welding strips which are arranged corresponding to the surface main grid lines and the bottom surface main grid lines of the battery piece;
transferring the locally preheated battery piece and the welding strip to the next station, circulating the steps, and welding when the locally preheated battery piece and the welding strip reach the welding position;
and (4) turning the welded battery string for 180 degrees and carrying the battery string to a discharging material box.
Compared with the prior art, the series welding equipment and the series welding process for the solar cell slice provided by the invention,
1. due to the adoption of the lever-type clamping mechanism, the clamping force is kept constant in the positioning and clamping processes, so that the phenomenon of slippage is avoided when the welding strip clamping jaw clamps the welding strip, the consistency of the processing quality in the same procedure is ensured, and the improvement of the positioning precision is facilitated.
2. The device can simultaneously complete two series-connected battery strings or two series-connected tile-stacked battery strings at one time, and has high efficiency;
3. compatible series welding and stack tile battery interconnection mode in an organic whole, convenient operation, battery piece interconnection is efficient.
Drawings
Fig. 1 is a three-dimensional structure of a solar cell series welding apparatus disclosed in the present application.
Fig. 2 is a schematic perspective view of a cell sheet feeding mechanism.
Fig. 3 is a schematic perspective view of a flux applying mechanism.
Fig. 4 is a schematic structural diagram of a solder strip pressing mechanism.
Fig. 5 is a schematic structural diagram of a solder strip fixed-length shearing mechanism.
Fig. 6 is a schematic structural diagram of the position of the welding mechanism and the welding belt conveying mechanism on the welding conveying belt.
Fig. 7 is a schematic perspective view of the solder strip transfer mechanism.
FIG. 8 is a schematic diagram of a lifting module of the solder strip transfer mechanism.
FIG. 9 is a schematic view of a fixing module of the solder strip transfer mechanism.
Fig. 10 is a schematic view of an adjusting structure of the welding light box.
Fig. 11 is a schematic view of the internal structure of the welding light box.
Reference numerals shown in the drawings:
100. a conveying mechanism;
200. a cell piece feeding mechanism; 20. a servo module; 21. a mobile platform; 22. a slice taking cylinder; 23. A glue dispensing mechanism;
300. a weld tape hold-down mechanism; 30. a vertical plate; 31. a lower pressing plate; 32. an upper pressure plate; 33. elastic pressing blocks; 34. pressing down the air cylinder; 35. redundant flux boxes;
400. a welding strip fixed-length shearing mechanism; 40. a lower cutting seat; 41. an upper cutting seat; 42. a lower cutter; 43. an upper cutter; 44. an upper stroke cylinder; 45. a lower stroke cylinder;
500. a soldering flux applying mechanism; 50. a soldering flux containing box; 51. a coating roller; 52. a carrier roller;
600. a welding mechanism; 60. a welding table; 61. welding a lamp box; 62. a heat conducting base; 63. a heat absorption fan; 64. a lifting platform; 65. jacking a cylinder; 66. a moving cylinder; 67. welding a lamp group; 68. a needle pressing group; 69. An air guide group; 601. welding a channel; 630. a heat conductive fin; 670. welding a lamp; 671. a welding lamp mounting seat; 680. pressing the needle; 681. pressing the needle seat;
700. a solder strip carrying mechanism; 70. a carrying module; 71. a lifting module; 72. fixing the module; 710. a vertical seat; 711. a slider; 712. a slide base; 713. a guide rail; 714. a slide part; 715. a lifting cylinder; 716. pushing the platform; 717. a threaded hole; 718. a notch; 720. a base plate; 721. a clamping port; 722. pushing the plate; 723. a clamping cylinder; 724. a push rod; 725. a pushing seat; 726. a spring; 727. clamping arms; 728. a mandrel; 800. Ejection of compact translation tilting mechanism.
Detailed Description
The present invention will be described in detail below with reference to the attached drawings, and the technical solutions in the embodiments of the present invention will be clearly and completely described. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The series welding equipment is used for realizing gluing interconnection of the battery pieces or welding interconnection of the welding strips.
For gluing and interconnecting the battery pieces, the embodiment discloses a solar battery piece laminating device, which comprises a conveying mechanism 100, a battery piece supplying mechanism (not shown), a battery piece feeding mechanism 200 and a discharging translation turnover mechanism 800, as shown in fig. 1; the conveying mechanism 100 is used for conveying the battery pieces; the battery piece supply mechanism is used for storing and storing stacked battery pieces, performing initial positioning, and continuously providing the battery pieces for a production line by energy sources so as to realize the function of automatic feeding; the battery piece feeding mechanism 200 is used for conveying the battery pieces on the battery piece feeding mechanism to the correcting mechanism for fine positioning, and then conveying the battery pieces to the conveying mechanism 100 for dispensing; the adjacent battery pieces are mutually laminated by using conductive adhesive, namely the front electrode of the battery A is connected with the back electrode of the battery B, the front electrode of the battery B is connected with the back electrode of the battery C, and by analogy, the whole series of batteries are connected in series, the distance is eliminated in the way, and more battery pieces can be placed in the same package; the battery strings connected in series are conveyed to the discharging belt by the conveying mechanism 100, the battery strings are sucked up by the discharging translation turnover mechanism 800, then the battery strings are turned over for 180 degrees, and the battery sheet strings are placed on the discharging material box.
As shown in fig. 2, the cell piece feeding mechanism 200 for moving the cell pieces comprises a servo module 20 and a moving platform 21, the moving platform 21 is provided with a cell piece taking cylinder 22 and a dispensing mechanism 23, the cell piece taking cylinder 22 is used for transferring the cell pieces in the material box to the correction platform and also used for transferring the cell pieces corrected by the correction platform to the dispensing platform, the servo motor drives the moving platform to be responsible for feeding the cell pieces with high precision and high speed, drives the cell piece taking cylinder and the cell piece placing cylinder, and the cell pieces move with high speed; the film taking cylinder is responsible for the film taking up and down action; the vacuum suction nozzle for taking the slices is responsible for sucking the slices from the slice supply box to the correction platform, and placing the slices onto the correction platform after breaking vacuum; the correction platform aligns the battery piece; the sheet placing cylinder is responsible for placing the sheet and moving down; the chip placing vacuum suction nozzle is responsible for sucking chips from the correction platform and placing the battery chips at corresponding positions of the welding belt for dispensing; in the dispensing process, the dispensing mechanism 23 is provided with a dispensing valve, dispensing is not performed in the process of loading the battery piece, dispensing is performed while the piece taking manipulator returns to the piece taking process, and the dispensing position comprises dispensing conductive adhesive on the surface and/or bottom surface of the battery piece, wherein dispensing can be performed continuously or at intervals.
In addition, the glue dispensing mechanism adopts jet glue dispensing, the screen can be manually operated to set the length of the battery piece needing glue dispensing, the glue dispensing is not performed in the process of loading the battery piece, the glue dispensing is performed while returning when the piece taking manipulator returns to the piece taking process, the glue dispensing position comprises the step of dispensing conductive glue on the surface and/or the bottom surface of the battery piece, and the glue dispensing can also be performed continuously or at intervals.
For the welding interconnection of the cell solder strips, the embodiment discloses a series welding device for solar cells, which, as shown in fig. 1, comprises a conveying mechanism 100, a cell supply mechanism (not shown), a cell feeding mechanism 200, a solder strip pressing mechanism 300, a solder strip fixed-length shearing mechanism 400, a soldering flux smearing mechanism 500, a welding mechanism 600, a solder strip carrying mechanism 700, and a discharging translation turnover mechanism 800; the conveying mechanism 100 is used for conveying welding strips and battery pieces; the battery piece supply mechanism is used for storing and storing stacked battery pieces, performing initial positioning, and continuously providing the battery pieces for a production line by energy sources so as to realize the function of automatic feeding; the cell piece feeding mechanism 200 is used for conveying the cell pieces on the cell piece feeding mechanism to the correcting mechanism for fine positioning, and then conveying the cell pieces to the conveying mechanism 100 for preheating before welding; the solder strip is coated with the soldering flux in advance through the soldering flux coating mechanism 500, and oxides are removed by using the soldering flux, heat conduction is assisted, the surface tension of the welded material is reduced, reoxidation is prevented, so that firm bonding is formed between bonding surfaces; then, according to the size requirement, the solder strip fixed-length shearing mechanism 400 shears a preset length, and before the preset length is sheared, the solder strip fixed-length shearing mechanism 300 needs to be used for fixing; then, the solder strip conveying mechanism 700 conveys the head and tail of a group of solder strips and conveys the group of solder strips to the main grid line of the battery piece; the aligned battery piece and the welding strip are conveyed to a welding station of the welding mechanism 600 through the conveying mechanism 100, and the welding strip is welded on the battery piece; the welded battery string is conveyed to the discharging belt by the conveying mechanism 100, the battery string is sucked up by the discharging translation turnover mechanism 800, then the battery string is turned over for 180 degrees, and the battery sheet string is placed on the discharging material box.
In the process of conveying solder strips, the embodiment performs a step of smearing soldering flux on the solder strips, fig. 3 is a schematic perspective view of a soldering flux smearing mechanism 500, and as can be seen from the figure, the soldering flux smearing mechanism 500 is used for smearing a layer of soldering flux on the bottom surfaces of the solder strips, and specifically comprises a soldering flux containing box 50, a smearing roller 51 and a carrier roller 52, wherein the smearing roller 51 is at least partially located in the soldering flux containing box 50, and the smearing roller 51 is used for contacting the bottom surfaces of the solder strips transferred along the direction of the conveying line, and adding the soldering flux to a plurality of conveyed solder strips simultaneously.
Fig. 4 and 5 show that the solder strip coated with the flux is fixed and cut, as shown in fig. 4 and 5, the solder strip pressing mechanisms 300 are two sets arranged in front and back, each set includes vertical plates 30 arranged on two sides of the conveyor belt, a lower pressing plate 31 is fixedly arranged between the two vertical plates 30, a liftable upper pressing plate 32 is arranged above the lower pressing plate 31, the upper end of the upper pressing plate 32 is connected with the output end of a lower pressing cylinder 34, elastic pressing blocks 33 corresponding to the number of the solder strips are arranged at the lower end of the upper pressing plate towards the direction of the lower pressing plate, the upper pressing plate 32 can be pushed by the lower pressing cylinder 34 to descend when the subsequent solder strip conveying is stopped, each set of elastic pressing blocks 33 supports and fixes the solder strips on the plate surface of the lower pressing plate 31, and the arrangement of the elasticity avoids damage to the solder strips, especially to the circular solder strips.
In the shearing process of the butt welding strip, the welding strip fixed-length shearing mechanism 400 comprises a lower cutting seat 40 and an upper cutting seat 41 which are arranged oppositely, a detachable lower cutter 42 is arranged on the lower cutting seat 40, a detachable upper cutter 43 is arranged on the upper cutting seat 41 corresponding to the lower cutter 42, the lower cutting seat 40 is connected with the output end of an upper stroke cylinder 44, the upper cutting seat 41 is connected with the output end of a lower stroke cylinder 45, and the welding strip fixed-length shearing mechanism 400 is arranged close to the welding strip pressing mechanism 300 so as to be fixed firstly when the welding strip is sheared in a fixed length mode.
In addition, the lower end of the welding strip pressing mechanism 300 can be provided with an extra flux box 35, so that the phenomenon that the applied flux falls on a conveying line to influence subsequent processing is avoided.
Before the welding, this embodiment has carried out the preheating link to battery piece and welding area, preheats on the one hand and is used for welding the surface of battery piece and/or bottom surface welding area carries out the local preheating to avoid direct welding to bring the big problem that causes stress concentration of the difference in temperature, on the other hand, through preheating, has accomplished the prewelding between messenger's welding area and the battery piece, when avoiding follow-up pulling or transferring the battery piece and welding the area, the problem of skew appears.
In the above embodiment, as shown in fig. 6 to 9, the solder ribbon conveying mechanism 700 is configured to convey the head and tail of a group of solder ribbons and convey the group of solder ribbons to the main grid of the battery piece, and specifically includes a conveying module 70 disposed along the length direction of the conveying line, a lifting module 71 moving in the length direction of the conveying module 70, and a fixing module 72 holding the solder ribbons. Wherein:
as shown in fig. 9, the fixed module 72 includes a bottom plate 720, the bottom plate 720 is provided with a clamping opening 721 for accommodating the solder strip to extend into corresponding to each group of solder strips, the bottom plate 720 is provided with a push plate 722 and a clamping cylinder 723 having an output end connected to the push plate 722 in the clamping direction, the push plate 722 and the bottom plate 720 are slidably disposed, the push plate 722 is provided with a through opening corresponding to each group of solder strips, the through opening is provided with a push rod 724, one end of the push rod 724 is inserted into the through opening, the other end of the push rod 724 is connected to a pushing seat 725, a spring 726 is disposed between the pushing seat 725 and the push plate 722, each group of pushing seats 725 is provided with a clamping arm 727 capable of rotating into the clamping opening 721 in the direction of the clamping opening 721, and the middle part of the clamping arm 727 is connected to the bottom plate 720 through a through core shaft 728; in some implementations, the clamping arm 727 and the pushing seat 725 are combined to form a lever structure, and under the pushing action of the clamping cylinder 723, the clamping force under the lever structure can be kept constant in the positioning and clamping process, so that the clamping arm 727 is ensured not to slip when clamping a welding strip, the consistency of the processing quality in the same process is ensured, the improvement of the positioning precision is facilitated, and in addition, due to the fact that a spring is arranged between the pushing seat 725 and the push plate 722, the welding strip can be prevented from being damaged by pressing.
As shown in fig. 8, the lifting module 71 includes a vertical base 710, a sliding block 711 is disposed at the bottom of the vertical base 710, and the sliding block 711 is connected to the conveying module 70 in a sliding manner, that is, the conveying module 70 is used for driving the lifting module 71 to move in the conveying direction of the conveying line to clamp the cut solder strip, place the head of the solder strip on the upper surface of the battery piece, and the battery piece feeding mechanism 200 moves down a battery piece and places the battery piece on the tail area of the solder strip, thereby realizing the series connection of the battery pieces. Sliding seats 712 are embedded on two sides of the plate surface of the vertical seat 710, and the sliding seats 712 are connected with two sides of the plate surface of the vertical seat 710 in a sliding manner through guide rails 713 and sliding parts 714; the plate surface of the vertical seat 710 is further provided with a lifting cylinder 715 for driving the sliding seat 712 to ascend and descend, the sliding seat 712 is provided with a push table 716 in the vertical direction of the output line, the push table 716 is provided with a threaded hole 717 for fixedly connecting the bottom plate 720 and a notch 718 for accommodating the output end of the clamping cylinder 723, the sliding seat is firstly lifted to a certain distance from the conveying line during movement, then the sliding seat is moved to a carrying position where a welding strip is to be carried, and the welding strip is clamped and then returned to the placing position of the welding strip and a battery piece.
Fig. 10 and 11 show a welding mechanism 600 provided in this embodiment, as can be seen from fig. 10 and 11, the welding mechanism 600 includes a welding table 60 and a welding light box 61, a welding channel 601 for allowing the battery sheet and the welding strip to enter is left between the welding table 60 and the welding light box 61, the welding table 60 is a vacuum adsorption seat, an adsorption hole for fixing the battery sheet is formed on an upper end surface of the vacuum adsorption seat, a heat conduction seat 62 is disposed on a lower end surface of the vacuum adsorption seat, a plurality of heat conduction fins 630 are uniformly disposed on the heat conduction seat 62 toward the lower end, a heat dissipation channel is formed between the heat conduction fins 630 and the heat conduction fins 630, a heat absorption fan 63 is disposed on a bottom of the heat conduction seat 62 toward the heat dissipation channel, heat during welding is transferred to the heat conduction fins 630 through the heat conduction seat 62, the heat dissipation channel between the heat conduction fins 630 can increase a contact area with air, and under the action of the heat absorption fan 63, a circulation speed between the heat conduction fins 630 and air can be increased, therefore, the purpose of controlling the welding temperature is achieved through the heat absorption fan 63, and the welding quality is facilitated.
In the above disclosed example, the welding lamp box 61 is slidably connected to the lifting table 64, the lifting table 64 is provided with the lifting cylinder 65, the push rod of the lifting cylinder 65 is connected to the welding lamp box 61, the bottom of the lifting table 64 is provided with the moving cylinder 66 for driving the lifting table 64 to be arranged along the conveying line direction, and it can be understood that the height between the welding lamp and the welding part during welding can be controlled by the lifting table 64.
In addition, a welding lamp group 67, a pressing pin group 68 and an air guide group 69 are arranged in the welding lamp box 61, wherein the welding lamp group 67 comprises a plurality of welding lamps 670 arranged perpendicular to the direction of the welding rod and a welding lamp mounting seat 671 for fixing the plurality of welding lamps 670, a through hole for allowing the pressing pin group 68 to partially penetrate is formed in the welding lamp mounting seat 671, the pressing pin group 68 comprises a plurality of rows of pressing pins 680 arranged along the length direction of the welding strip and a pressing pin seat 681 for fixing the plurality of pressing pins 680, and the pressing pins 680 penetrate through the through hole and extend into the space between the two welding lamps 670, so that uniform heating can be realized; the air guide set 69 is positioned at the upper end of the needle pressing set 68, air is accelerated by the fan, moves from top to bottom, absorbs heat by the welding lamp, and the air with heat reaches the surface of the battery piece to weld the battery piece; during the use, several tuckers 680 on every pressure needle seat 681 stretch into between two welding lamps 670 under the effect of jacking cylinder 65, and every row of tuckers 680 is contradicted in the length direction of welding the area and is welded the area before welding, fixes the welding area before welding, starts afterwards to weld lamp 670 and weld comprehensively.
In the above embodiment, the abutting portion of the pressing pin 680 is made of a high temperature material that does not stick to tin, so that the welding quality is ensured, the appearance of the welding surface is ensured, and the defects caused by the traditional spring pressing pin or the dead weight pressing pin are effectively overcome.
A solar cell tiling process, comprising the steps of:
step 1: conducting adhesive is dispensed on the surface and/or the bottom surface of the battery piece, wherein the dispensing of the conducting adhesive comprises continuous or interval dispensing on the main grid line of the battery piece;
step 2: laminating adjacent battery pieces by using conductive adhesive, wherein the adjacent battery pieces comprise a front electrode of a battery A connected with a back electrode of a battery B, and the front electrode of the battery B connected with a back electrode of a battery C;
and step 3: after the bonding is finished, the adhesive is removed, and the next cycle is carried out;
and 4, step 4: and turning the laminated battery pieces 180 degrees and conveying the laminated battery pieces to a discharging box.
The embodiment discloses a series welding process of solar cells, which comprises the following steps:
step 1: correspondingly placing the welding strip and the main grid line of the battery piece, wherein the corresponding placement comprises the corresponding placement of the welding strip and the main grid line on the surface of the battery piece and the corresponding placement of the welding strip and the main grid line on the bottom surface of the battery piece;
step 2: respectively carrying out at least partial preheating on the welding strips which are arranged corresponding to the surface main grid lines and the bottom surface main grid lines of the battery piece;
and step 3: transferring the locally preheated battery piece and the welding strip to the next station, circulating the steps, and welding when the locally preheated battery piece and the welding strip reach the welding position;
and 4, step 4: and (4) turning the welded battery string for 180 degrees and carrying the battery string to a discharging material box.
The following describes a specific process for producing a battery string by using the series welding method for battery plates provided by the invention.
Pile up the battery piece in battery piece supplies the piece magazine, descend by the piece cylinder of getting of battery piece feeding mechanism 200, absorb first battery piece, sense after absorbing successfully, feed box below elevator motor descends, and the action of branch piece air knife makes the smooth separation of battery piece.
Moving the battery piece to the position above the correction platform by the action of the piece taking cylinder, descending the piece taking cylinder to place the battery piece on the correction platform, and correcting the X-axis cylinder and the Y-axis cylinder of the correction platform to correct the battery piece; after correction, the correction platform acts to move the battery piece to the conveying belt, and the cylinder descends to suck the battery piece and senses that suction is successful, and then the distance between the battery pieces is set.
The solder strip unwinding mechanism unwinds the solder strip, the solder strip coats the scaling powder to the bottom of the solder strip in the transfer process, then solder strip handling mechanism 700 draws the solder strip, solder strip fixed length shearing mechanism 400 cuts off the drawn solder strip, solder strip handling mechanism 700 conveys the cut solder strip to the cell, one part of the cut solder strip covers the grid line of the cell, wherein, the cut solder strip needs to connect two cells, and the step is used for placing one part of the solder strip to the upper surface and/or the lower surface of the grid line of the cell.
After butt joint is finished, pre-welding pretreatment is carried out by a preheating mechanism, the pretreatment comprises fixing of a welding strip and heating between the welding strip and a battery piece, a pressing needle group presses the upper surface of the welding strip to enable the welding strip to be tightly pressed on a grid line of the battery piece opposite to the welding strip, the step can avoid deviation between the welding strip and the grid line of the battery piece, a welding lamp is started while fixing, the temperature between the battery piece and the welding lamp is increased in advance, and the fixed part is locally fixed; the conveying mechanism moves one station to convey the battery piece and the welding strip forwards.
When the battery piece and the welding strip are conveyed to the lower part of the welding lamp, the pressing needle group descends to press the battery piece and the welding strip, then the welding lamp is started to weld a product, wherein in the welding process, the lower part of the welding mechanism 600 extends out of the pressing needle group to press a plurality of positions of the welding strip laid on the battery piece in the length direction.
After welding is finished, the pressing pin is lifted, the welding belt conveys the battery piece backwards by one step pitch, and the next battery piece is welded; and repeating the lamination action until the welding of the whole string of battery plates is finished.
The welded battery string is conveyed to a discharging belt by a welding belt, a discharging translation mechanism descends to suck the battery string, and then the battery string is placed on a turnover mechanism; the turnover mechanism turns the battery string for 180 degrees and places the battery piece string on the discharging material box.
From a reading of the foregoing detailed description, it will be appreciated by those skilled in the art that the invention can be readily implemented. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the embodiments disclosed, a person skilled in the art can combine different features at will, so as to implement different solutions, and can combine different forms of additional functions to form other solutions. The scope of protection of the application is therefore only limited by the scope of the appended claims.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (10)
1. Solar wafer stringer, its characterized in that includes:
the conveying mechanism is used for conveying the welding strips and the battery pieces;
the battery piece feeding mechanism is used for conveying the battery pieces to the conveying mechanism;
the welding strip conveying mechanism comprises a conveying module arranged along the length direction of a conveying line, a lifting module moving along the length direction of the conveying module and a fixing module for clamping a welding strip, wherein the fixing module comprises a bottom plate, the bottom plate is provided with a clamping port for accommodating the welding strip to extend into corresponding to each group of welding strips, the bottom plate is provided with a push plate and a clamping cylinder of which the output end is connected with the push plate towards the clamping direction, the push plate and the bottom plate are arranged in a sliding manner, the push plate is provided with a penetrating port corresponding to each group of welding strips, a push rod is arranged on the penetrating port, one end of the push rod penetrates through the penetrating port, the other end of the push rod is connected with a pushing seat, a spring is arranged between the pushing seat and the push plate, and each group of pushing seats is provided with a clamping arm which can rotate into the clamping port towards the direction of the clamping port, the middle part of the clamping arm is connected with the bottom plate through a penetrating mandrel; and
and the welding mechanism is used for welding the welding strip on the battery piece.
2. The solar cell series welding equipment according to claim 1, wherein the lifting module comprises a vertical base, a sliding block is arranged at the bottom of the vertical base and is connected with the carrying module in a sliding manner, sliding bases are embedded on two sides of the surface of the vertical base, and the sliding bases are connected with two sides of the surface of the vertical base in a sliding manner through guide rails and sliding parts; the lifting cylinder that still is provided with the drive on the face of founding the seat the slide oscilaltion, the slide court the vertical direction of output line is provided with and pushes away the platform, it is used for fixed connection to push away bench the screw hole of bottom plate and hold the notch that the centre gripping cylinder output was worn to establish.
3. The solar cell series welding device according to claim 1, further comprising a flux applying mechanism, wherein the flux applying mechanism comprises a flux containing box, an applying roller and a supporting roller, the applying roller is at least partially positioned in the flux containing box, and the applying roller is in contact with the bottom surface of the welding strip which is moved along the conveying line direction.
4. The series welding device for the solar cell pieces according to claim 1, further comprising two sets of solder strip pressing mechanisms, wherein the solder strip pressing mechanisms comprise vertical plates arranged on two sides, a lower pressing plate is arranged between the vertical plates, an upper pressing plate is arranged above the lower pressing plate, elastic pressing blocks corresponding to the number of the solder strips are arranged on the upper pressing plate, and the upper end of the upper pressing plate is connected with the output end of a lower pressing cylinder.
5. The solar cell series welding device according to claim 1, further comprising a solder strip fixed-length shearing mechanism, wherein the solder strip fixed-length shearing mechanism comprises a lower cutting seat and an upper cutting seat, a detachable lower cutter is arranged on the lower cutting seat, a detachable upper cutter is arranged on the upper cutting seat corresponding to the lower cutter, the lower cutting seat is connected with the output end of the upper stroke cylinder, and the upper cutting seat is connected with the output end of the lower stroke cylinder.
6. The solar cell series welding device according to claim 1, wherein the welding mechanism comprises a welding table and a welding lamp box, a welding channel for allowing the cell and the welding strip to enter is reserved between the welding table and the welding lamp box, the welding table is a vacuum adsorption seat, an adsorption hole for fixing the cell is formed in the upper end surface of the vacuum adsorption seat, a heat conduction seat is arranged on the lower end surface of the vacuum adsorption seat, a plurality of heat conduction fins are arranged on the heat conduction seat, a heat dissipation channel is formed between the heat conduction fins, and a heat absorption fan is arranged at the bottom of the heat conduction seat and faces the heat dissipation channel.
7. The solar cell series welding device according to claim 6, wherein the welding lamp box is slidably connected with a lifting table, a jacking cylinder is arranged on the lifting table, a push rod of the jacking cylinder is connected with the welding lamp box, and a moving cylinder for driving the lifting table to be arranged along the conveying line is arranged at the bottom of the lifting table.
8. The solar cell series welding device according to claim 7, wherein a welding lamp set, a pressing pin set and a wind guide set are arranged in the welding lamp box, wherein the welding lamp set comprises a plurality of welding lamps arranged perpendicular to the welding rod direction and a welding lamp mounting seat for fixing the plurality of welding lamps, a through hole for allowing the pressing pin set to partially penetrate is formed in the welding lamp mounting seat, the pressing pin set comprises a plurality of rows of pressing pins arranged along the length direction of the welding strip and a pressing pin seat for fixing the plurality of pressing pins, and the pressing pins penetrate through the through hole and extend into the space between the two welding lamps; the air guide group is positioned at the upper end of the needle pressing group.
9. A solar cell tiling process, comprising:
conducting adhesive is dispensed on the surface and/or the bottom surface of the battery piece, wherein the dispensing of the conducting adhesive comprises continuous or interval dispensing on the main grid line of the battery piece;
laminating adjacent battery pieces by using conductive adhesive, wherein the adjacent battery pieces comprise a front electrode of a battery A connected with a back electrode of a battery B, and the front electrode of the battery B connected with a back electrode of a battery C;
after the bonding is finished, the adhesive is removed, and the next cycle is carried out;
and turning the laminated battery pieces 180 degrees and conveying the laminated battery pieces to a discharging box.
10. The series welding process of the solar cell is characterized by comprising the following steps of:
correspondingly placing the welding strip and the main grid line of the battery piece, wherein the corresponding placement comprises the corresponding placement of the welding strip and the main grid line on the surface of the battery piece and the corresponding placement of the welding strip and the main grid line on the bottom surface of the battery piece;
respectively carrying out at least partial preheating on the welding strips which are arranged corresponding to the surface main grid lines and the bottom surface main grid lines of the battery piece;
transferring the locally preheated battery piece and the welding strip to the next station, circulating the steps, and welding when the locally preheated battery piece and the welding strip reach the welding position;
and (4) turning the welded battery string for 180 degrees and carrying the battery string to a discharging material box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111546756.2A CN114242838A (en) | 2021-12-16 | 2021-12-16 | Series welding equipment and process for solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111546756.2A CN114242838A (en) | 2021-12-16 | 2021-12-16 | Series welding equipment and process for solar cell |
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| CN114242838A true CN114242838A (en) | 2022-03-25 |
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| CN202111546756.2A Pending CN114242838A (en) | 2021-12-16 | 2021-12-16 | Series welding equipment and process for solar cell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112259A (en) * | 2019-05-28 | 2019-08-09 | 江阴市悦渠咨询有限公司 | Imbrication series welding integrated machine and its application and method |
| CN115635319A (en) * | 2022-12-05 | 2023-01-24 | 浙江求是半导体设备有限公司 | Solder strip carrier assembly, soldering apparatus and soldering method |
| CN117161505A (en) * | 2023-11-02 | 2023-12-05 | 无锡博而远智能装备有限公司 | Automatic series welding machine |
-
2021
- 2021-12-16 CN CN202111546756.2A patent/CN114242838A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112259A (en) * | 2019-05-28 | 2019-08-09 | 江阴市悦渠咨询有限公司 | Imbrication series welding integrated machine and its application and method |
| CN110112259B (en) * | 2019-05-28 | 2023-11-28 | 江阴初旭智能科技有限公司 | Tile overlapping and series welding integrated machine and application and method thereof |
| CN115635319A (en) * | 2022-12-05 | 2023-01-24 | 浙江求是半导体设备有限公司 | Solder strip carrier assembly, soldering apparatus and soldering method |
| CN117161505A (en) * | 2023-11-02 | 2023-12-05 | 无锡博而远智能装备有限公司 | Automatic series welding machine |
| CN117161505B (en) * | 2023-11-02 | 2024-01-30 | 无锡博而远智能装备有限公司 | Automatic series welding machine |
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