CN108198889A - A kind of cell piece interconnected method - Google Patents
A kind of cell piece interconnected method Download PDFInfo
- Publication number
- CN108198889A CN108198889A CN201810148166.6A CN201810148166A CN108198889A CN 108198889 A CN108198889 A CN 108198889A CN 201810148166 A CN201810148166 A CN 201810148166A CN 108198889 A CN108198889 A CN 108198889A
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- cell piece
- solder strip
- reflective solder
- reflective
- impression face
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 229910000679 solder Inorganic materials 0.000 claims abstract description 111
- 238000003466 welding Methods 0.000 claims abstract description 71
- 238000003825 pressing Methods 0.000 claims abstract description 60
- 238000012545 processing Methods 0.000 claims abstract description 22
- 230000011218 segmentation Effects 0.000 claims abstract description 9
- 238000006073 displacement reaction Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 description 15
- 239000010949 copper Substances 0.000 description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 14
- 239000010410 layer Substances 0.000 description 11
- 239000000758 substrate Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001074 Lay pewter Inorganic materials 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000018199 S phase Effects 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
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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
-
- 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
-
- 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 present invention provides a kind of cell piece interconnected methods, solve the problems, such as that reflective solder strip is low with cell piece back side electrode welding pulling capacity, and avoid caused sliver in welding processing procedure.Include the following steps：A, reflective solder strip is provided, a side surface of the reflective solder strip is the impression face of light, another side surface is smooth non-impression face, has the reflection groove for increasing light reflectance on the impression face；B, the impression face is divided into positioned at the positive non-pressing area for flattening area and being connected to cell piece backplate of cell piece, segmentation is carried out to the reflective solder strip and flattens pressing area pressing of the processing by the impression face；C, the reflective solder strip fits with the non-front electrode for flattening the corresponding non-impression face in area and a cell piece, impression face on cell piece front retains the reflection groove, the pressing area in the impression face of the reflective solder strip and the backplate fitting of another cell piece, are then welded to each other to interconnect cell piece.
Description
Technical field
The invention belongs to solar energy crystal silicon battery component fields, more particularly to a kind of to be interconnected cell piece using reflective solder strip
Method.
Background technology
With the large-scale use of fossil energy, cause Global Environmental Problems increasingly serious.The whole world of fossil fuel simultaneously
Allowable exploitation is also constantly being reduced, and to realize global economy, Ecological Sustainable Development, it is violent that green novel energy source develops burst in recent years
Into wherein surely belonging to solar energy power generating most economic benefit and social environment value.
Solar energy power generating critical piece is solar cell module（Referred to as " solar panel "）If wherein solar panel be by
Dry solar energy crystal silicon battery connection in series-parallel forms the generator unit of current loop.Solar energy crystal silicon battery（Referred to as " cell piece "）Most
End form into photogenerated current be by photovoltaic welding belt（Referred to as " welding "）Interconnection confluence, the interconnection of current battery piece is to pass through photovoltaic
Welding is realized with cell piece main grid ag paste electrode high-temperature soldering.Photovoltaic welding belt is welded on battery surface, and solar panel was using
Sunlight, which is radiated on cell piece surface, in journey understands some light and is blocked by photovoltaic welding belt, and the light being blocked can not quilt completely
Cell piece absorbs, and finally affects cell piece efficiency, and solar panel generated energy is caused to reduce.
Being blocked at present for reduction light causes solar panel output power low, and most of photovoltaic module enterprises have started batch and used
The light for being radiated at welding surface by the zigzag reflective layer on reflective solder strip surface is reflected back, is reflected by reflective solder strip
Light be re-reflected into cell piece surface by the interior surface layers of photovoltaic glass and absorbed, improve the utilization rate of light so as to be promoted
Solar panel output power.
Reflective solder strip is meets conventional automatic string welder technological requirement, and zigzag reflective layer is generally when welding rolls
It is just molded as one with welding Copper base material, is on one side non-impression face for impression face, another side.Since welding surface zigzag is reflective
Layer（Impression face）It is whole continuous, non-impression face paste closes cell piece front to cell piece in the welding process（Light-receiving surface）Impression face
Zigzag reflective layer plays reflecting effect in upper surface.Because cell piece needs to interconnect, using after the type reflective solder strip with battery
Welding procedure will be inapplicable when piece back electrode silver paste is welded because impression face paste closes cell back electrode, zigzag reflective layer with
Electrode contact surface product it is small, can not ensure welding after pulling force and due to zigzag reflective layer mostly V-shaped slot in solar panel processing procedure
In especially easily increase failure risk caused by reflective solder strip stress in laminating technology（It is such as hidden to split, bright split）, so as to cause electricity
Pond plate manufacture cost increase and hidden danger of quality risk increase.
Invention content
The present invention is intended to provide a kind of cell piece interconnected method, solves reflective solder strip and the electrode welding drawing of the cell piece back side
The problem of power is low, and avoid caused sliver in welding processing procedure.
The technical solution adopted by the present invention is as follows：
A kind of cell piece interconnected method, includes the following steps：
A, reflective solder strip is provided, a side surface of the reflective solder strip is the impression face of light, another side surface is smooth non-
Impression face has the reflection groove for increasing light reflectance on the impression face；
B, the impression face is divided into positioned at the positive non-pressing for flattening area and being connected to cell piece backplate of cell piece
Area carries out the reflective solder strip segmentation and flattens pressing area pressing of the processing by the impression face；
C, the reflective solder strip fits with the non-front electrode for flattening the corresponding non-impression face in area and a cell piece,
Impression face on cell piece front retains the reflection groove, the pressing area in the impression face of the reflective solder strip and another
The backplate fitting of cell piece, is then welded to each other to interconnect cell piece.
In some embodiments, the reflection groove is the V-shaped groove extended along reflective solder strip length direction.
In some embodiments, in step B, pressing processing is carried out by reflective solder strip described in pair of rollers.
In some embodiments, in step B, idler wheel, the thin pressure for flattening reflective solder strip described in pair of rollers are flattened with thick successively
Flat area carries out pressing processing.
In some embodiments, the idler wheel is arranged in pairs, be equipped between a pair of idler wheel for reflective solder strip by
Gap.
In some embodiments, reflective solder strip is made to be moved between idler wheel, after moving a certain distance, the reflective weldering of pair of rollers
Band is rolled.
In some embodiments, reflective solder strip often moves a set displacement, and pair of rollers reflective solder strip is once rolled
Processing forms a pressing area, the set displacement be equal to the length of cell piece and two adjacent cell pieces spacing it
With.
In some embodiments, step C is specifically included：Placing battery plate makes its front electrode upward in string welding machine, will
Through step B, treated that reflective solder strip is placed on the front electrode of cell piece, makes the corresponding non-with non-pressing area of reflective solder strip
Impression face and front electrode fit；Next cell piece is placed in the pressing area in reflective solder strip impression face, makes cell piece
The pressing area of backplate and reflective solder strip fits, the back of the body with a cell piece respectively in repeated several times to each pressing area
Face electrode fits；String welding machine heating welding makes reflective solder strip be connect with each cell piece.
In some embodiments, specifically comprise the following steps：
Cell piece face-up is placed sequentially on the designated position of welding conveyer belt by robot, wherein, the weldering
It connects conveyer belt and often moves a set displacement, a cell piece is placed on corresponding designated position by the robot, described set
Displacement is equal to the sum of the length of cell piece and the spacing of two adjacent cell pieces；
Reflective solder strip is evened up by drawing clamp and reflective solder strip is driven to pass through between at least a pair of of idler wheel, often move one
The set displacement, the idler wheel roll reflective solder strip and once form the pressing area described in one；
After the completion of pressing processing, progress fixed length is cut at reflective solder strip fixed length position；
Reflective solder strip after movement is cut is placed it on the front electrode of the cell piece on welding conveyer belt, and is made anti-
The non-impression face corresponding with non-pressing area of flush weld band and front electrode fit；
Next cell piece is placed on by robot in the pressing area after being driven plain of the impression face of reflective solder strip, makes its back side
Electrode and the flat area of impression face pressure fit；It repeats several times, until the back of the body with a cell piece respectively in each pressing area
Face electrode fits；
The reflective solder strip after fitting and each cell piece are transported to welding post, string welding machine heat source adstante febre by welding conveyer belt
Reflective solder strip and each cell piece secure fit.
In some embodiments, the stroke of the traction clamp movement is detected by photoelectric sensor to judge reflective solder strip
Whether a set displacement is moved.
The present invention is had the following advantages that compared with prior art using above scheme：
The conventional jagged reflective solder strip in one-side band impression face uses cell back electrode and reflective solder strip in automatic string welding machine
Welding pulling capacity is low and welding process easily causes sliver, by the present invention in that conventional road welding is flattened by segmentation at technique
Reason, the flat area of impression face pressure after pressing can fit with cell piece backplate, be connected firmly after welding, and positioned at battery
Reflective solder strip upper surface on piece front electrode remains as the impression face with reflective groove, does not influence reflecting effect, so as to
On the basis of not influencing reflective solder strip using effect, effectively solve reflective solder strip and the cell piece back side and weld that pulling capacity is low to ask
Topic, and avoid and solve caused sliver in welding processing procedure.
Description of the drawings
It, below will be to attached drawing needed in embodiment description in order to illustrate more clearly of technical scheme of the present invention
It is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, general for this field
For logical technical staff, without creative efforts, other attached drawings are can also be obtained according to these attached drawings.
Attached drawing 1 is the flow chart according to a kind of cell piece interconnected method of the present invention；
Attached drawing 2a, 2b are respectively the three-dimensional structure diagram and sectional view of reflective solder strip；
Attached drawing 3 is to flatten schematic diagram according to a kind of reflective solder strip segmentation of the present invention；
Attached drawing 4 is the schematic diagram in the reflective solder strip impression face after segmentation flattens.
In above-mentioned attached drawing：
1- reflective solder strips；11- impressions face；The non-pressing areas of 111-；112- flattens area；The non-impression faces of 12-；13- reflective grooves；21- is thick
Flatten idler wheel；22- carefully flattens idler wheel.
Specific embodiment
The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be understood by the person skilled in the art.It should be noted that the explanation for these embodiments is used to help
Understand the present invention, but do not form limitation of the invention.It is in addition, involved in the various embodiments of the present invention described below
And to technical characteristic can be combined with each other as long as they do not conflict with each other.
The present embodiment provides a kind of cell piece interconnected methods, are used to by sending out reflective solder strip go here and there multiple cell pieces successively
Weldering interconnection, flow chart is as shown in Figure 1.Reflective solder strip is conventional road welding as shown in attached drawing 2a and 2b, the reflective weldering
Include the Copper base material being integrated by calendaring molding and reflective layer with 1, Copper base material include the Copper substrate being made of anaerobic fine copper and
It is formed in the coat on Copper substrate surface.The conductivity of Copper substrate is 0.0172 Ω mm2/ m, the thickness of Copper substrate is 0.25mm,
The width of Copper substrate is 0.9mm, and the tensile strength of Copper substrate is 140N/mm2, the yield strength of Copper substrate is 55MPa, Copper substrate
Elongation percentage for 35%, the curvature of Copper substrate is 4mm/m；It is mainly leypewter element to coat composition of layer, by mass fraction packet
It includes：Sn 60%, Cu 0.02%, Sb 0.012%, Zn 0.001%, Bi 0.01%, As0.01%, Fe0.01%, AL 0.001%, Cd
0.001%, remaining is Pb.The surface of side residing for the reflective layer of reflective solder strip 1 be light impression face 11, Copper base material it is separate
One side surface of reflective layer is smooth non-impression face 12.There is the reflection groove for increasing light reflectance on impression face 11
13, reflection groove 13 can be the V-shaped groove extended along reflective solder strip length direction shown in Fig. 2 b.
In interconnection, welded after the front electrode welding of 1 and one cell piece of photovoltaic welding belt with the backplate of next cell piece
It connects, recycles successively, so as to which multiple cell pieces be concatenated.In order to improve the welding drawing of reflective solder strip and cell piece backplate
Power in interconnected method provided by the invention, the impression face 11 is divided into positioned at the positive non-pressing area 111 of cell piece and even
The pressing area 112 of cell piece backplate is connected to, segmentation is carried out to the reflective solder strip 1 and flattens processing by the impression face 11
Area 112 is flattened to flatten；Then by the reflective solder strip 1 and non-corresponding non-12 and one electricity of impression face in pressing area 111
The front electrode of pond piece fits, and the impression face on cell piece front retains the reflection groove, the pressure of the reflective solder strip
The pressing area 112 in trace face 11 and the backplate of another cell piece fit, and then weld, so as to which cell piece interconnects.
With reference to shown in attached drawing 3, pressing processing is carried out by idler wheel 21 and 22 pairs of reflective solder strips 1, idler wheel includes thick pressure
Flat roller 21 and it is thin flatten idler wheel 22, flattened idler wheel 21 with thick successively, thin flattened pressing area of the idler wheel 22 to the reflective solder strip 1
112 carry out pressing processing.The idler wheel 21 and 22 is arranged in pairs respectively, is equipped between a pair of idler wheel 21 or 22 and is supplied reflective weldering
With 1 by gap.Reflective solder strip 1 is made to be moved respectively between idler wheel 21,22, after moving a certain distance, pair of rollers is reflective
Welding is rolled.Reflective solder strip 1 often moves a set displacement, and 21,22 pairs of reflective solder strips 1 of idler wheel are once rolled processing
Form a pressing area 112, the set displacement is equal to the sum of the length of cell piece and the spacing of two adjacent cell pieces.
With reference to shown in Fig. 4, by the segmentation reflective solder strip 1 that flattens that treated, impression face 11 have multiple patterns with it is non-
Impression face 12 is similar to flatten area 112, thereon without reflective groove, for being bonded cell piece backplate；Area 112 is flattened by two
A adjacent non-pressing area 111 is spaced apart, after being connected in non-impression face 12 with the main grid of cell piece front electrode, each non-pressing
Area 111 is located on cell piece front and between adjacent cell piece and with original light reflectance.
Cell piece interconnection process is generally：Cell piece in automatic string welding machine auto plate separation, mechanical feeding, outside vision camera
Detection is seen, even application scaling powder at cell piece primary gate electrode, six shaft mechanical people are picked up with piece and is precisely put on welding conveyer belt
Piece, welding conveyer belt feeding, reflective solder strip, which are stretched, to be smoothed, flattens after reflective solder strip smooths and cut, wait for position upper berth in welding
If the reflective solder strip of certain length carries out being welded into battery strings in high-temperature soldering area.It is wherein right before laying fixed length reflective solder strip
The reflective solder strip of specific region has carried out pressing process by double groups of idler wheel pressuring flat devices, and laying is specified in the region being driven plain
On the back electrode of cell piece.With reference to shown in attached drawing 1, which specifically comprises the following steps：
S101, the specified of welding conveyer belt face-up is placed sequentially in by intact cell piece is detected by six-joint robot
On position；Wherein, the welding conveyer belt often moves a set displacement, and the robot places one on corresponding designated position
A cell piece, the set displacement are equal to the sum of the length of cell piece and the spacing of two adjacent cell pieces；Especially by
Servo motor is controlled to realize, a set displacement is a stepping stroke；
S102, the reflective solder strip of plate-like is evened up by drawing clamp, and drive reflective solder strip successively from it is a pair of thick flatten idler wheel,
Pass through between a pair of thin pressing idler wheel, often move a set displacement, the idler wheel starts uniformly to roll reflective solder strip pressure
Trace face approaches its configuration of surface and non-impression face, forms the pressing area described in one；Idler wheel has rolling limit for width position, anti-after pressing
Flush weld bandwidth tolerance ± 0.08mm；
After the completion of S103, pressing processing, progress fixed length is cut at reflective solder strip fixed length position；That is, double groups of idler wheels roll action
Fixed length is carried out after the completion of instruction to reflective solder strip by the cutter in automatic string welding machine at reflective solder strip fixed length position to cut
It is disconnected；
Reflective solder strip after S104, movement are cut is placed it on the front electrode of the cell piece on welding conveyer belt,
And the non-impression face corresponding with non-pressing area of reflective solder strip and front electrode is made to fit；Specifically, automatic string welding machine welding
Carrying mechanism adsorbs the reflective solder strip that fixed length has been cut, displacement and the intact main grid for being placed on cell piece front electrode
On surface；
S105, the pressure for continuing to pick up down a piece of cell piece and next cell piece is precisely placed on to reflective solder strip by six-joint robot
In pressing area after being driven plain of trace face（That is, on the above-mentioned region being rolled）, make its backplate and the flat area's phase of impression face pressure
Fitting；It repeats several times, until each backplate for flattening area respectively with a cell piece fits；
S106, the reflective solder strip after fitting and each cell piece are transported to welding post, string welding machine heat source by welding conveyer belt
（Such as infrared heat source, hot wind, electromagnetic heat source）Fever makes welding post temperature be increased to the tin of reflective solder strip coat to melt
State so as to make reflective solder strip and each cell piece secure fit, realizes cell piece interconnection.Wherein, cell piece front electrode and the back of the body
Face electrode and reflective solder strip welding pulling capacity >=1.5N.
In step S102, the stroke of the traction clamp movement is detected by photoelectric sensor whether to judge reflective solder strip
A mobile set displacement.Refer to the anti-of clamp stretching is drawn by the mapping of high precision photoelectric sensor in automatic string welding machine the machine
Flush weld with horizontal direction travel position point distance to determine whether a mobile commitment positions and reach the area that the need specified flatten
Domain, this trip location point distance are got by inputting the calculating of welding of battery film location parameter early period, and parameter logistics relationship preserves
In the programmable controller, action command transmission is carried out to double groups of idler wheels by controller and is completed most by double groups of idler wheel complete devices
It uniformly rolls eventually.
The present embodiment also provides a kind of string welding machine for cell piece interconnection, including for being segmented to reflective solder strip
The idler wheel of pressing.Idler wheel includes slightly flattening idler wheel and carefully flattens idler wheel, uses thick pressing idler wheel successively, carefully flattens described in pair of rollers instead
The pressing area of flush weld band carries out pressing processing.The idler wheel is arranged in pairs, and is equipped between a pair of idler wheel and is led to for reflective solder strip
The gap crossed.
It should also be noted that, idler wheel can rise grade addition in existing automatic string welding machine, it is original that automatic string welding machine is not influenced
Working performance, while meet reflective solder strip again and stablize batch use in automatic string welding machine；Overcome and solve conventional road
For welding cell back electrode welding pulling capacity is low after the completion of welding the problem of, fully meeting the gain of solar panel output power will
It asks, synergy while also improves the yield of solar panel and reduces processing and manufacturing cost.
The present invention carries out pressing process using double group pair of rollers conventional road weldings, and it is in continuous sawtooth to make reflective solder strip
The one side of shape reflective layer can be flattened by double groups of idler wheel priority homogenous segmentations online, and final conventional road welding can realize difference
Region reaches different surfaces appearance can securely to be pasted very well by high-temperature soldering with cell piece front electrode and backplate
It is combined, meets welding pulling capacity requirement.
The above embodiments merely illustrate the technical concept and features of the present invention, is a kind of preferred embodiment, and purpose exists
It can understand present disclosure in person skilled in the art and implement according to this, the protection of the present invention can not be limited with this
Range.The equivalent transformation or modification that all principles according to the present invention are made, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of cell piece interconnected method, which is characterized in that include the following steps：
A, reflective solder strip is provided, a side surface of the reflective solder strip is the impression face of light, another side surface is smooth non-
Impression face has the reflection groove for increasing light reflectance on the impression face；
B, the impression face is divided into positioned at the positive non-pressing for flattening area and being connected to cell piece backplate of cell piece
Area carries out the reflective solder strip segmentation and flattens pressing area pressing of the processing by the impression face；
C, the reflective solder strip fits with the non-front electrode for flattening the corresponding non-impression face in area and a cell piece,
Impression face on cell piece front retains the reflection groove, the pressing area in the impression face of the reflective solder strip and another
The backplate fitting of cell piece, is then welded to each other to interconnect cell piece.
2. cell piece interconnected method according to claim 1, which is characterized in that the reflection groove is along reflective solder strip length
The V-shaped groove of direction extension.
3. cell piece interconnected method according to claim 1, which is characterized in that in step B, by reflective described in pair of rollers
Welding carries out pressing processing.
4. cell piece interconnected method according to claim 3, which is characterized in that in step B, successively with it is thick flatten idler wheel,
The thin pressing area for flattening reflective solder strip described in pair of rollers carries out pressing processing.
5. cell piece interconnected method according to claim 3, which is characterized in that the idler wheel is arranged in pairs, described in a pair
Between idler wheel be equipped with for reflective solder strip by gap.
6. cell piece interconnected method according to claim 5, which is characterized in that reflective solder strip is made to be moved between idler wheel,
After moving a certain distance, pair of rollers reflective solder strip is rolled.
7. cell piece interconnected method according to claim 6, which is characterized in that reflective solder strip often moves one and both positioned
It moves, pair of rollers reflective solder strip, which carries out once rolling processing, forms a pressing area, and the set displacement is equal to cell piece
The sum of length and the spacing of two adjacent cell pieces.
8. cell piece interconnected method according to claim 1, which is characterized in that step C is specifically included：It is put in string welding machine
Putting cell piece makes its front electrode upward, by through step B, treated that reflective solder strip is placed on the front electrode of cell piece, makes anti-
The non-impression face corresponding with non-pressing area of flush weld band and front electrode fit；Next cell piece is placed on reflective solder strip pressure
In the pressing area in trace face, the backplate of cell piece and the pressing area of reflective solder strip is made to fit, repeated several times to each pressure
Backplate in flat area respectively with a cell piece fits；String welding machine heating welding makes reflective solder strip connect with each cell piece
It connects.
9. cell piece interconnected method according to claim 1, which is characterized in that include the following steps：
Cell piece face-up is placed sequentially on the designated position of welding conveyer belt by robot, wherein, the weldering
It connects conveyer belt and often moves a set displacement, a cell piece is placed on corresponding designated position by the robot, described set
Displacement is equal to the sum of the length of cell piece and the spacing of two adjacent cell pieces；
Reflective solder strip is evened up by drawing clamp and reflective solder strip is driven to pass through between at least a pair of of idler wheel, often move one
The set displacement, the idler wheel roll reflective solder strip and once form the pressing area described in one；
After the completion of pressing processing, progress fixed length is cut at reflective solder strip fixed length position；
Reflective solder strip after movement is cut is placed it on the front electrode of the cell piece on welding conveyer belt, and is made anti-
The non-impression face corresponding with non-pressing area of flush weld band and front electrode fit；
Next cell piece is placed on by robot in the pressing area after being driven plain of the impression face of reflective solder strip, makes its back side
Electrode and the flat area of impression face pressure fit；It repeats several times, until the back of the body with a cell piece respectively in each pressing area
Face electrode fits；
The reflective solder strip after fitting and each cell piece are transported to welding post, string welding machine heat source adstante febre by welding conveyer belt
Reflective solder strip and each cell piece secure fit.
10. cell piece interconnected method according to claim 9, which is characterized in that by photoelectric sensor detect described in lead
Draw the stroke of clamp movement to judge whether reflective solder strip moves a set displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN109406459A (en) * | 2018-10-30 | 2019-03-01 | 晶科能源有限公司 | A kind of the reflecting rate testing auxiliary device and method of reflective solder strip |
| CN109728117A (en) * | 2018-12-28 | 2019-05-07 | 苏州腾晖光伏技术有限公司 | A kind of grid welding, its manufacturing method, its manufacturing device and imbrication component |
| CN110676345A (en) * | 2019-09-20 | 2020-01-10 | 黄河水电光伏产业技术有限公司 | Splicing method and assembly of crystalline silicon solar cell string |
| CN111180553A (en) * | 2020-01-07 | 2020-05-19 | 韩华新能源（启东）有限公司 | Preparation method of novel stitch welding assembly, stitch welding assembly and processing equipment |
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