CN108682711A - High-efficiency photovoltaic solder strip and its welding method and the screen printing apparatus for implementing this method - Google Patents
High-efficiency photovoltaic solder strip and its welding method and the screen printing apparatus for implementing this method Download PDFInfo
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- CN108682711A CN108682711A CN201810594307.7A CN201810594307A CN108682711A CN 108682711 A CN108682711 A CN 108682711A CN 201810594307 A CN201810594307 A CN 201810594307A CN 108682711 A CN108682711 A CN 108682711A
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- Prior art keywords
- welding
- web plate
- base band
- solder layer
- cell piece
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- 229910000679 solder Inorganic materials 0.000 title claims abstract description 145
- 238000003466 welding Methods 0.000 title claims abstract description 129
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000007650 screen-printing Methods 0.000 title claims abstract description 24
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052709 silver Inorganic materials 0.000 claims abstract description 45
- 239000004332 silver Substances 0.000 claims abstract description 45
- 239000006071 cream Substances 0.000 claims abstract description 43
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000005476 soldering Methods 0.000 claims abstract description 8
- 238000007641 inkjet printing Methods 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 210000004027 cell Anatomy 0.000 claims description 59
- 238000007639 printing Methods 0.000 claims description 28
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 20
- 230000033001 locomotion Effects 0.000 claims description 12
- 230000001360 synchronised effect Effects 0.000 claims description 12
- 238000007747 plating Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 210000002421 cell wall Anatomy 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000011324 bead Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910001074 Lay pewter Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
Classifications
-
- 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
- H01L31/0508—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 the interconnection means having a particular shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
-
- 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
- H01L31/0512—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 made of a particular material or composition of materials
-
- 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 present invention relates to photovoltaic welding belt technical fields,More particularly to a kind of screen printing apparatus of High-efficiency photovoltaic solder strip and its welding method and implementation this method,The welding includes base band,The one side of base band is patterned surface,Another side is smooth surface,Several reflective grooves are distributed on patterned surface,One layer of predetermined pattern face solder layer is integrally covered on the patterned surface of base band,And it is 5% 40% that predetermined pattern face solder layer, which is located at filling proportion of the position in the reflective groove in reflective groove,,One layer of prefabricated smooth surface solder layer is integrally covered in the smooth surface of base band,The maximum return of power may be implemented in this way,In order to ensure that the back of the body silver soldering of cell piece connects,Pass through silk-screen printing,Inkjet printing,Or the mode of spraying,Weld-aiding cream or tin cream are prepared into the reflective groove of welding,Or on the back of the body silver of cell piece,Realize the reliability that back of the body silver soldering connects,And power income can be in 3W or more,And the mode for processing welding is stablized,It is also wasted without welding when use.
Description
Technical field
The present invention relates to photovoltaic welding belt technical field more particularly to a kind of High-efficiency photovoltaic solder strip and its welding method and implementations
The screen printing apparatus of this method.
Background technology
Photovoltaic welding belt is also known as tin-coated copper strip or applies tin copper strips, the connection being mainly used between photovoltaic module cell piece, hair
The conductive important function for gathering electricity is waved, as shown in Figure 1, when the multi-disc cell piece 2 of photovoltaic module is connected using welding 1, it is two neighboring
The front of one of cell piece 2 is welded with the back side of welding 1 between cell piece 2, the back side and the welding 1 of another cell piece 2
Front welding；
The problem for the shading that obvious welding is also brought while converging on photovoltaic module, in order to solve this problem, mesh
Also reflective solder strip is used on preceding photovoltaic module accordingly, mainly by doing V-groove in copper-based take, by V-groove come anti-
Sunlight is penetrated, realizes the multiplexing of light, increases the power of photovoltaic module with this, has the one side of V-groove to be also referred to as decorative pattern on welding
Face can cover solder layer accordingly on its patterned surface of most welding on the market at present, on the one hand utilize solder layer to base band
It is protected, increases its corrosion-resistant and oxidative resistance；On the other hand using solder layer to be welded with cell piece, and solder
Problem is as follows caused by the setting of layer：
Since the thickness of solder layer on welding patterned surface is thicker, welding and the decorative pattern in the place section of cell piece front welding
Reflective income is smaller, that is to say, that after welding, the ratio being filled with solder is fewer for V-groove, then reflective more, more increases component
Power, it is clear that as far as possible reduce patterned surface (face containing V-groove) solder layer thickness, then be more conducive to increase power, but weldering
The bed of material is too thin, but influences the welding in cell back silver face, therefore how to balance solder layer, that is, can guarantee welding, and energy
It realizes maximum reflective income, is always the reflective solder strip application problem to be solved.
Reflective solder strip on the market passes through right two major classes at present：
One is plating reflective solder strip, such welding, by doing decorative pattern in copper-based take, the then system by way of plating
Standby tin-lead solder layer, due to being that copper-based band is electroplated together, in order to ensure the welding of back of the body silver, solder layer generally will not be low
In 13 μm, but thickness is too thick (more than 15 μm), may result in the severe (packing ratio of fill solder that V-groove is melted after welding
Example 40%-50%), reflective income is seldom, and therefore, this type welding patterned surface solder layer is between 13-15 μm, for 60
The component power of piece is promoted only about between 1.5-2W, and this type welding electroplating cost is high, the condition window narrows of application,
Cell piece and string welding machine slightly have fluctuation, and bad problem is connect with regard to will appear battery back of the body silver soldering；
Secondly being segmented welding, V-groove decorative pattern exactly is done in copper-based take, one section of solder layer is 2-5 μm thin (for anti-
Light), the 18-25 μm of welding for being used for the cell piece back side of one section of solder thickness.Such welding is the solder prepared by physics mode
Layer, advantage are that reflective power is higher, promote about 3W for 60 component powers, but this reflective solder strip is using process
In, since the solder layer length at 18-25 μ m thicks end is all inconvenient, and head and the tail both ends cell piece top edge in photovoltaic module
The length of pad and the pad at remaining position is inconsistent, therefore the welding that segmented welding can be more usual loses 5-10%,
And the device of identification segmentation position need to be added in string welding machine, the fraction defective of application is high.When being most importantly segmented, due to being to do
The solder layer of different sections, therefore low production efficiency, stability are poor.And this mode low, of high cost, stability of doing twill efficiency
Difference；Chinese patent 201510386460.7 discloses a kind of photovoltaic welding belt and preparation method thereof, which actually also belongs to
In such segmented welding, this welding equally exists the above problem.
For with this, the present invention is intended to provide a kind of can guarantee welding, and can realize the photovoltaic of maximum reflective income
Welding.
Invention content
The technical problem to be solved by the present invention is to：In order to solve to need asking for balance welding and power ascension in the prior art
Topic, the present invention provide a kind of preparation method of High-efficiency photovoltaic solder strip.
The technical solution adopted by the present invention to solve the technical problems is：A kind of High-efficiency photovoltaic solder strip, including base band, it is described
The one side of base band is patterned surface, and another side is smooth surface, and several reflective grooves, the patterned surface of the base band are distributed on the patterned surface
Upper entirety is covered with one layer of predetermined pattern face solder layer, and the position that predetermined pattern face solder layer is located in reflective groove is reflective at this
Filling proportion in slot is 5%-40%, and one layer of prefabricated smooth surface solder layer is integrally covered in the smooth surface of the base band.
Significantly reduced reflective using continuity distribution and relatively thin predetermined pattern face solder layer in base band in this programme
Slot is prefabricated the ratio of patterned surface solder layer filling, the maximum return of power is realized with this, and process the mode of welding
Stablize, the waste of no welding, is then by welding, by weld-aiding cream or tin as the welding quality of welding and cell back silver
Cream is prepared on the back of the body silver face of welding or cell piece, so that it is guaranteed that the welding quality of welding, wherein predetermined pattern face solder layer is also
For being protected to base band, increase its corrosion-resistant and oxidative resistance.
Further, the thickness of predetermined pattern face solder layer is 2-8 μm, and the thickness of the prefabricated smooth surface solder layer is
10-30 μm, relatively thin predetermined pattern face solder layer can not only realize the reliability that back of the body silver soldering connects, and for 60 component work(
Rate income can be in 3W or more.
Further, the base band is copper-based band.
Further, the reflective groove is V-groove.
Further, the V-groove is arranged in twill or straight grain.
Further, the groove depth of the V-groove is 40-150 μm, and the angle of two cell walls is 80-135 ° in V-groove.
Further, predetermined pattern face solder layer is molded over the patterned surface of base band by the way of plating, hot-dip,
The prefabricated smooth surface solder layer is molded over the smooth surface of base band by the way of plating, hot-dip.
Two schemes can be used in welding in the High-efficiency photovoltaic solder strip, specific as follows：
One is：A kind of welding method of High-efficiency photovoltaic solder strip, the High-efficiency photovoltaic solder strip are that above-mentioned high-efficiency photovoltaic welds
Band, during the patterned surface of base band and multi-disc cell piece series welding successively, when the patterned surface of base band and the back of the body silver face of cell piece
When welding：
First by the way of silk-screen printing, inkjet printing or spraying, weld-aiding cream or tin cream are prepared into base band and waited for
In the V-groove where the silver-colored face welding of the back of the body of cell piece at position, to form now solder layer processed in V-groove；
Then the back of the body silver face that the now position of solder layer processed and cell piece are formed in base band is welded again.
Further, solid content >=70% in the tin cream.
Secondly being：A kind of welding method of High-efficiency photovoltaic solder strip, the High-efficiency photovoltaic solder strip are that above-mentioned high-efficiency photovoltaic welds
Band, during the patterned surface of base band and multi-disc cell piece series welding successively, when the patterned surface of base band and the back of the body silver face of cell piece
When welding：
First on the back of the body silver face of cell piece, by the way of silk-screen printing, inkjet printing or spraying, by weld-aiding cream
Or tin cream is prepared on the back of the body silver face of cell piece, to form now solder layer processed on the back of the body silver face of cell piece；
Then the solder layer processed that shows on the silver-colored face of the back of the body of the patterned surface of base band and cell piece is welded again.
A kind of screen printing apparatus of welding method that implementing above-mentioned High-efficiency photovoltaic solder strip, for the patterned surface to welding
The now printing process of solder layer processed, the screen printing apparatus include：
Rack；
Platform, sliding are located in the rack, have the inner cavity for accommodating weld-aiding cream or tin cream on the platform；
There is web plate the printing mouth for printing now solder layer processed on welding, the web plate to be fixed on inner cavity on platform
Bottom；
Pedestal is used for holding welding, and the pedestal is fixed on the rack, and the pedestal is located at the lower section of web plate, and with net
Plate is opposed；
Scraper is arranged in the inner cavity of platform；
Web plate press mechanism moves up and down for web plate with moving platform and thereon with respect to the pedestal in rack；
Scraper press mechanism, for driving scraper to be pressed on web plate；
And scraper motion, for driving scraper to be moved on web plate, with this by the weld-aiding cream or tin cream in inner cavity
Blow into the printing mouth of web plate.
Between pedestal and web plate, in printing, web plate press mechanism band moving platform moves down welding, makes to put down in this programme
It is pressed on welding under web plate on platform, then scraper press mechanism drives scraper pushing that it is made to be pressed on web plate, finally by scraping
Knife motion drives scraper to be moved on web plate, and to realize, correspondence need to weld the position print in cell back silver face on welding
Now solder layer processed is brushed out, now preparation efficiency and precision of the solder layer processed on welding, and the preparation of entire solder layer now processed are promoted
Process stability is strong.
Further, the printing mouth on the web plate has multiple, and the quantity and arrangement mode pair of mouth are printed on the web plate
It should be consistent with the quantity and arrangement mode for carrying on the back silver-colored face on cell piece.
Further, the web plate press mechanism includes the web plate lower air cylinder and guide post of external part upward, described to lead
It is fixed on the rack to column, the platform is slidably arranged in the guide post, and the cylinder body of the web plate lower air cylinder is fixed on
In rack, the external part of the web plate lower air cylinder is fixedly connected with platform, and axis direction and the web plate of the guide post push
The axis direction of cylinder external part is consistent；When web plate needs to push, platform is directly driven using web plate lower air cylinder.
In order to ensure printing quality and protection web plate, further, the scraper press mechanism includes slide and external part
Scraper lower air cylinder directed downwardly, the slide are slidably arranged on the platform, and the cylinder body of the scraper lower air cylinder is fixed on
On slide, the external part of the scraper lower air cylinder is fixedly connected with scraper；If scraper is pressed on web plate always, it is easy to lead
It causes web plate to be damaged, and passes through the setting of scraper press mechanism so that only when scraper needs to push, scraper lower air cylinder
Can just scraper be driven to be pressed on web plate, otherwise scraper is not contacted with web plate, to achieve the purpose that protect web plate.
Further, the scraper motion includes motor, active synchronization wheel, driven synchronizing wheel and synchronous belt, described
Motor is fixed on platform, and the active synchronization wheel and driven synchronizing wheel are located at the both ends of inner cavity, the active synchronization wheel
And driven synchronizing wheel is rotatably arranged on platform, is connected by toothed belt transmission between the active synchronization wheel and driven synchronizing wheel
It connects, output end and the active synchronization wheel of the motor are sequentially connected, and the slide is fixed on synchronous belt；It needs to move in scraper
When, motor drives active synchronization wheel rotation, and drives slide to move using synchronous belt, to realize shifting of the scraper on web plate
Dynamic, it is that printing is primary that wherein motor, which rotates forward and drives scraper one stroke of movement, and motor is reversion when next time prints, and scraper is driven to move
Move a stroke opposite with last time moving direction, it is ensured that scraper can print back and forth, reduce single and print the used time.
The invention has the advantages that the silk screen of the High-efficiency photovoltaic solder strip and its welding method and implementation this method of the present invention
Printing equipment, High-efficiency photovoltaic solder strip is distributed using continuity and relatively thin predetermined pattern face solder layer, can significantly reduce
Reflective groove is prefabricated the ratio of patterned surface solder layer filling, the maximum return of power is realized with this, and process welding
Mode is stablized, and production efficiency is high, and when use also wastes without welding, is then logical as the welding quality of welding and cell back silver
It crosses in welding, weld-aiding cream or tin cream is prepared on the back of the body silver face of welding or cell piece, so that it is guaranteed that the welding quality of welding.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is welding and schematic diagram when cell piece Series connection welding；
Fig. 2 is the schematic diagram that welding uses electroplating technology shaped solder layer in the present invention；
Fig. 3 is the schematic diagram that welding uses or immersion shaped solder layer in the present invention；
Fig. 4 is that weld-aiding cream or tin cream are prepared into base band to be formed in V-groove by welding when in use in the present invention
The now schematic diagram of solder layer processed；
Fig. 5 is the back of the body silver face schematic diagram of cell piece in the present invention；
Fig. 6 is the schematic three dimensional views of screen printing apparatus in the present invention；
Fig. 7 is the schematic front view of screen printing apparatus in the present invention；
Fig. 8 is the cooperation schematic diagram of welding and web plate in screen printing apparatus of the present invention.
In figure：1, welding, 1-1, base band, 1-11, reflective groove, 1-2, predetermined pattern face solder layer, 1-3, the weldering of prefabricated smooth surface
The bed of material, 2, cell piece, the silver-colored face of 2-1, the back of the body, 3, existing solder layer processed；
4, rack, 5, platform, 5-1, inner cavity, 6, web plate, 6-1, printing mouth, 7, pedestal, 8, scraper, 9, calm the anger under web plate
Cylinder, 10, guide post, 11, slide, 12, scraper lower air cylinder, 13, motor, 14, active synchronization wheel, 15, driven synchronizing wheel, 16,
Synchronous belt.
Specific implementation mode
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention, direction and with reference to (for example,
Upper and lower, left and right, etc.) can be only used for helping the description to the feature in attached drawing.Therefore, it is not adopted in restrictive, sense
With detailed description below, and claimed theme is only limited by appended claims and its equivalent form
Range.
Embodiment 1
As shown in Figures 2 and 3, the one side of a kind of High-efficiency photovoltaic solder strip, including base band 1-1, base band 1-1 is patterned surface, another
Face is smooth surface, and several reflective groove 1-11 are distributed on patterned surface, one layer of predetermined pattern is integrally covered on the patterned surface of base band 1-1
Face solder layer 1-2, and predetermined pattern face solder layer 1-2 is located at filling of the position in reflective groove 1-11 in reflective groove 1-11
Ratio is 5%-40%, and one layer of prefabricated smooth surface solder layer 1-3, predetermined pattern face solder are integrally covered in the smooth surface of base band 1-1
Layer 1-2 is molded over the patterned surface of base band 1-1 by the way of plating, hot-dip, and prefabricated smooth surface solder layer 1-3 is using plating, warm
The mode of immersion plating is molded over the smooth surface of base band 1-1, as shown in Fig. 2, when prefabricated smooth surface solder layer 1-3 is molded by the way of plating
When, thickness of the prefabricated smooth surface solder layer 1-3 in reflective groove 1-11 is uniform；As shown in figure 3, working as prefabricated smooth surface solder layer 1-
3 by the way of hot-dip when being molded, and thickness of the prefabricated smooth surface solder layer 1-3 in reflective groove 1-11 is simultaneously non-homogeneous, can be with filling out
Ratio is filled to state, and specially filling proportions of the solder layer 1-2 in predetermined pattern face in reflective groove 1-11 is 5%-40%.
The thickness of predetermined pattern face solder layer 1-2 is 2-8 μm, and the thickness of prefabricated smooth surface solder layer 1-3 is 10-30 μm, compared with
Thin predetermined pattern face solder layer 1-2 can not only realize the reliability that back of the body silver soldering connects, and for 60 component power incomes
It can be in 3W or more.
It is specially V-groove that base band 1-1, which specifically uses copper-based band 1-1, reflective groove 1-11, and V-groove is set in twill or straight grain
It sets, the groove depth of the V-groove is 40-150 μm, and the angle of two cell walls is 80-135 ° in V-groove.
Following welding method can be used in welding in the High-efficiency photovoltaic solder strip：
A kind of welding method of High-efficiency photovoltaic solder strip, High-efficiency photovoltaic solder strip is above-mentioned High-efficiency photovoltaic solder strip, in base band 1-1
Patterned surface and multi-disc cell piece 2 successively during series welding, when the patterned surface of base band 1-1 and the back of the body silver face 2-1 of cell piece 2 weld
When connecing：
As shown in figure 4, first by the way of silk-screen printing, inkjet printing or spraying, prepared by weld-aiding cream or tin cream
It is waited on to base band 1-1 in the V-groove at the back of the body silver face 2-1 welding place position with cell piece 2, it is existing to be formed in V-groove
Solder layer 3 processed；
Then the now position of solder layer 3 processed will be formed on base band 1-1 again and the back of the body silver face 2-1 of cell piece 2 is welded.
It need to could be welded the tin cream used in 2 printing technology of conventional batteries piece at present by Heat preservation lamp process, whole
A process up to 20 seconds every, and concretely tin of the solid content (leypewter) 70% or more of tin cream used in the present invention
Cream shortens weld interval with this, can accomplish 1-4 seconds every, to be connected the welding procedure of battery piece 2.
As shown in fig. 6-7, it is a kind of implement above-mentioned High-efficiency photovoltaic solder strip welding method screen printing apparatus, for pair
The printing process of the existing solder layer 3 processed of the patterned surface of welding 1, the screen printing apparatus include：
Rack 4；
Platform 5, sliding are located in rack 4, have the inner cavity 5-1 for accommodating weld-aiding cream or tin cream on platform 5；
There is web plate 6 the printing mouth 6-1 for printing now solder layer 3 processed on welding 1, web plate 6 to be fixed on platform 5
The bottom of inner cavity 5-1；
Pedestal 7 is used for holding welding 1, and pedestal 7 is fixed in rack 4, and pedestal 7 is located at the lower section of web plate 6, and with web plate 6
It is opposed；
Scraper 8 is arranged in the inner cavity 5-1 of platform 5；
Web plate press mechanism moves up and down for web plate 6 with moving platform 5 and thereon with respect to the pedestal 7 in rack 4；
Scraper press mechanism, for driving scraper 8 to be pressed on web plate 6；
And scraper motion, for driving scraper 8 to be moved on web plate 6, with this by the 5-1 of inner cavity weld-aiding cream or
Tin cream blows into the printing mouth 6-1 of web plate 6.
Printing mouth 6-1 on web plate 6 has multiple, the quantity of printing mouth 6-1 and arrangement mode correspondence and cell piece on web plate 6
Quantity and the arrangement mode that silver face 2-1 is carried on the back on 2 are consistent.
Web plate press mechanism includes that external part web plate lower air cylinder 9 upward and guide post 10, guide post 10 are fixed on machine
On frame 4, platform 5 is slidably arranged in guide post 10, and the cylinder body of web plate lower air cylinder 9 is fixed in rack 4, web plate lower air cylinder
9 external part is fixedly connected with platform 5, the axis direction one of the axis direction and 9 external part of web plate lower air cylinder of guide post 10
It causes；When web plate 6 needs to push, platform 5 is directly driven using web plate lower air cylinder 9.
Scraper press mechanism includes slide 11 and external part scraper lower air cylinder 12 directed downwardly, and slide 11 is slidably arranged in flat
On platform 5, the cylinder body of scraper lower air cylinder 12 is fixed on slide 11, and the external part of scraper lower air cylinder 12 is fixed with scraper 8 to be connected
It connects；If scraper 8 is pressed on always on web plate 6, it is easy to cause web plate 6 and is damaged, and by the setting of scraper press mechanism,
So that only when scraper 8 needs to push, scraper lower air cylinder 12 just can drive scraper 8 to be pressed on web plate 6, otherwise scraper 8
It is not contacted with web plate 6, to achieve the purpose that protect web plate 6.
Scraper motion includes motor 13, active synchronization wheel 14, driven synchronizing wheel 15 and synchronous belt 16, and motor 13 is fixed
On platform 5, active synchronization wheel 14 and driven synchronizing wheel 15 are located at the both ends of inner cavity 5-1, active synchronization wheel 14 and driven
Synchronizing wheel 15 is rotatably arranged on platform 5, is driven and is connected by synchronous belt 16 between active synchronization wheel 14 and driven synchronizing wheel 15
It connects, output end and the active synchronization wheel 14 of motor 13 are sequentially connected, and slide 11 is fixed on synchronous belt 16；It needs to move in scraper 8
When dynamic, motor 13 drives active synchronization wheel 14 to rotate, and drives slide 11 to move using synchronous belt 16, to realize that scraper 8 exists
It is that printing is primary that movement on web plate 6, wherein motor 13, which rotate forward and drive one stroke of movement of scraper 8, motor 13 when next time prints
For reversion, scraper 8 is driven to move a stroke opposite with last time moving direction, it is ensured that scraper 8 can print back and forth, reduce single
The secondary printing used time.
Welding 1 in the present embodiment its use and be distributed relatively thin predetermined pattern face solder layer 1- in base band 1-1 continuity from above
The filling proportion of 2, predetermined pattern face solder layer 1-2 in V-groove is 5%-40%, can significantly reduce reflective groove 1-11 quilts
The ratio of predetermined pattern face solder layer 1-2 fillings, the maximum return of power is realized with this, and process the mode of welding 1
Stablize, production efficiency is high, and when use also wastes without welding 1；
The welding quality that silver is carried on the back as welding 1 and cell piece 2 is then by welding, prepared by weld-aiding cream or tin cream
Now solder layer 3 processed is formed in the V-groove of welding 1, the welding quality of welding 1 is ensured with this, and now the thickness of solder layer 3 processed can be according to
Depending on the weld strength ensured on welding 1 and cell piece 2 between back of the body silver face 2-1.
As shown in figure 5, having 5 rows 4 row in the case of the back of the body silver face 2-1 of every cell piece 2, as shown in figure 8, the print on web plate 6
Brush mouth 6-1 equally has 5 rows 4 row, is printed simultaneously using 5 root bead bands 1,5 root bead bands 1 is correspondingly placed on pedestal 7 simultaneously, welding
1 is respectively positioned between pedestal 7 and web plate 6, and when printing is put into weld-aiding cream or tin cream in the inner cavity 5-1 of platform 5 first, then web plate
Lower air cylinder 9 directly drives platform 5 and moves down, and makes to be pressed on welding 1 under the web plate 6 on platform 5, and subsequent scraper lower air cylinder 12 is driven
Dynamic scraper 8 is pressed on web plate 6, finally drives active synchronization wheel 14 to rotate by motor 13, and drives slide using synchronous belt 16
11 movements, to realize movement of the scraper 8 on web plate 6, by the 5-1 of inner cavity weld-aiding cream or tin cream blow into the printing of web plate 6
Mouth 6-1 carries to which solder layer 3 processed occurs in the position printing of the realization back of the body silver face 2-1 that correspondence need to weld cell piece 2 on welding 1
Now preparation efficiency and precision of the solder layer 3 processed on welding 1 is risen, and the preparation process stability of entire solder layer 3 now processed is strong.
Embodiment 2
The one side of a kind of High-efficiency photovoltaic solder strip, including base band 1-1, base band 1-1 is patterned surface, and another side is smooth surface, decorative pattern
Several reflective groove 1-11 are distributed on face, one layer of predetermined pattern face solder layer 1-2 is integrally covered on the patterned surface of base band 1-1,
And it is 5%- that predetermined pattern face solder layer 1-2, which is located at filling proportion of the position in reflective groove 1-11 in reflective groove 1-11,
40%, one layer of prefabricated smooth surface solder layer 1-3 is integrally covered in the smooth surface of base band 1-1, predetermined pattern face solder layer 1-2 is using electricity
Plating, hot-dip mode be molded over the patterned surface of base band 1-1, prefabricated smooth surface solder layer 1-3 using be electroplated, by the way of hot-dip at
Smooth surface of the type in base band 1-1.
The thickness of predetermined pattern face solder layer 1-2 is 2-8 μm, and the thickness of prefabricated smooth surface solder layer 1-3 is 10-30 μm, compared with
Thin predetermined pattern face solder layer 1-2 can not only realize the reliability that back of the body silver soldering connects, and for 60 component power incomes
It can be in 3W or more.
It is specially V-groove that base band 1-1, which specifically uses copper-based band 1-1, reflective groove 1-11, and V-groove is set in twill or straight grain
It sets, the groove depth of the V-groove is 40-150 μm, and the angle of two cell walls is 80-135 ° in V-groove.
Following welding method can be used in welding in the High-efficiency photovoltaic solder strip：
A kind of welding method of High-efficiency photovoltaic solder strip, High-efficiency photovoltaic solder strip is above-mentioned High-efficiency photovoltaic solder strip, in base band 1-1
Patterned surface and multi-disc cell piece 2 successively during series welding, when the patterned surface of base band 1-1 and the back of the body silver face 2-1 of cell piece 2 weld
When connecing：
First on the back of the body silver face 2-1 of cell piece 2, by the way of silk-screen printing, inkjet printing or spraying, it will help
Soldering paste or tin cream are prepared on the back of the body silver face 2-1 of cell piece 2, to form now solder layer processed on the back of the body silver face 2-1 of cell piece 2
3；
Then the patterned surface of base band 1-1 and the solder layer 3 processed that shows on the back of the body silver face 2-1 of cell piece 2 are welded again.
Welding 1 in the present embodiment its use and be distributed relatively thin predetermined pattern face solder layer 1- in base band 1-1 continuity from above
The filling proportion of 2, predetermined pattern face solder layer 1-2 in V-groove is 5%-40%, can significantly reduce reflective groove 1-11 quilts
The ratio of predetermined pattern face solder layer 1-2 fillings, the maximum return of power is realized with this, and process the mode of welding 1
Stablize, production efficiency is high, and when use also wastes without welding 1；
The welding quality that silver is carried on the back as welding 1 and cell piece 2 is then by welding, prepared by weld-aiding cream or tin cream
Now solder layer 3 processed is formed on the back of the body silver face 2-1 of cell piece 2, the welding quality of welding 1 is ensured with this, now the thickness of solder layer 3 processed
Depending on degree can be according to the weld strength ensured on welding 1 and cell piece 2 between back of the body silver face 2-1.
It is enlightenment with above-mentioned desirable embodiment according to the present invention, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to determine its technical scope according to right.
Claims (15)
1. a kind of High-efficiency photovoltaic solder strip, it is characterised in that：Including base band (1-1), the one side of the base band (1-1) is patterned surface,
Another side is smooth surface, and several reflective grooves (1-11) are distributed on the patterned surface, are integrally covered on the patterned surface of the base band (1-1)
It is stamped one layer of predetermined pattern face solder layer (1-2), and predetermined pattern face solder layer (1-2) is located at the position in reflective groove (1-11)
Filling proportion in the reflective groove (1-11) is 5%-40%, and one layer is integrally covered in the smooth surface of the base band (1-1) in advance
Smooth surface solder layer (1-3) processed.
2. High-efficiency photovoltaic solder strip according to claim 1, it is characterised in that：Predetermined pattern face solder layer (1-2)
Thickness is 2-8 μm, and the thickness of the prefabricated smooth surface solder layer (1-3) is 10-30 μm.
3. High-efficiency photovoltaic solder strip according to claim 1, it is characterised in that：The base band (1-1) is copper-based band (1-1).
4. High-efficiency photovoltaic solder strip according to claim 1, it is characterised in that：The reflective groove (1-11) is V-groove.
5. High-efficiency photovoltaic solder strip according to claim 4, it is characterised in that：The V-groove is arranged in twill or straight grain.
6. High-efficiency photovoltaic solder strip according to claim 4, it is characterised in that：The groove depth of the V-groove is 40-150 μm, V
The angle of two cell walls is 80-135 ° in type groove.
7. according to claim 1-6 any one of them High-efficiency photovoltaic solder strips, it is characterised in that：Predetermined pattern face solder layer
(1-2) is molded over the patterned surface of base band (1-1) by the way of plating, hot-dip, and the prefabricated smooth surface solder layer (1-3) uses
It is electroplated, the mode of hot-dip is molded over the smooth surface of base band (1-1).
8. a kind of welding method of High-efficiency photovoltaic solder strip, it is characterised in that：The High-efficiency photovoltaic solder strip is that claim 1-7 is any
High-efficiency photovoltaic solder strip described in works as base during the patterned surface of base band (1-1) and multi-disc cell piece (2) series welding successively
When the patterned surface of band (1-1) is welded with the back of the body silver face (2-1) of cell piece (2)：
First by the way of silk-screen printing, inkjet printing or spraying, weld-aiding cream or tin cream are prepared into base band (1-1)
It waits in the V-groove at position where being welded with the back of the body silver face (2-1) of cell piece (2), to form now solder layer processed in V-groove
(3)；
Then the now position of solder layer (3) processed will be formed in base band (1-1) again and the back of the body silver face (2-1) of cell piece (2) is welded.
9. the welding method of High-efficiency photovoltaic solder strip according to claim 8, it is characterised in that：Solid content in the tin cream
>=70%.
10. a kind of welding method of High-efficiency photovoltaic solder strip, it is characterised in that：The High-efficiency photovoltaic solder strip is that claim 1-7 appoints
High-efficiency photovoltaic solder strip described in one, during the patterned surface of base band (1-1) and multi-disc cell piece (2) series welding successively, when
When the patterned surface of base band (1-1) is welded with the back of the body silver face (2-1) of cell piece (2)：
First on the back of the body silver face (2-1) of cell piece (2), by the way of silk-screen printing, inkjet printing or spraying, it will help
Soldering paste or tin cream are prepared on the back of the body silver face (2-1) of cell piece (2), existing to be formed on the back of the body silver face (2-1) of cell piece (2)
Solder layer (3) processed；
Then solder layer processed (3) welding will be showed on the back of the body silver face (2-1) of the patterned surface of base band (1-1) and cell piece (2) again.
11. a kind of screen printing apparatus of welding method that implementing High-efficiency photovoltaic solder strip as claimed in claim 8, is used for butt welding
The printing process of the existing solder layer (3) processed of patterned surface of band (1), it is characterised in that：The screen printing apparatus includes：
Rack (4)；
Platform (5), sliding are located in the rack (4), have the inner cavity for accommodating weld-aiding cream or tin cream on the platform (5)
(5-1)；
Web plate (6) has the printing mouth (6-1) for printing now solder layer (3) processed on welding (1), the web plate (6) fixed
The bottom of inner cavity (5-1) on platform (5)；
Pedestal (7) is used for holding welding (1), and the pedestal (7) is fixed in rack (4), and the pedestal (7) is located at web plate (6)
Lower section, and it is opposed with web plate (6)；
Scraper (8) is arranged in the inner cavity (5-1) of platform (5)；
Web plate press mechanism, for web plate (6) with moving platform (5) and thereon with respect to being moved down on pedestal (7) work in rack (4)
It is dynamic；
Scraper press mechanism, for driving scraper (8) to be pressed on web plate (6)；
And scraper motion, for driving scraper (8) to be moved on web plate (6), with this by the weld-aiding cream in inner cavity (5-1)
Or tin cream blows into the printing mouth (6-1) of web plate (6).
12. screen printing apparatus according to claim 11, it is characterised in that：Printing mouth (6-1) on the web plate (6)
There are multiple, the quantity of printing mouth (6-1) and arrangement mode correspondence and the silver-colored face (2-1) of the back of the body on cell piece (2) on the web plate (6)
Quantity and arrangement mode are consistent.
13. screen printing apparatus according to claim 11, it is characterised in that：The web plate press mechanism includes external part
Web plate lower air cylinder (9) upward and guide post (10), the guide post (10) are fixed in rack (4), and the platform (5) is sliding
Dynamic to be arranged in the guide post (10), the cylinder body of the web plate lower air cylinder (9) is fixed in rack (4), under the web plate
The external part of air cylinder (9) is fixedly connected with platform (5), axis direction and the web plate lower air cylinder (9) of the guide post (10)
The axis direction of external part is consistent.
14. screen printing apparatus according to claim 11, it is characterised in that：The scraper press mechanism includes slide
(11) and external part scraper lower air cylinder (12) directed downwardly, the slide (11) is slidably arranged on the platform (5), described to scrape
The cylinder body of knife lower air cylinder (12) is fixed on slide (11), and the external part and scraper (8) of the scraper lower air cylinder (12) are solid
Fixed connection.
15. screen printing apparatus according to claim 14, it is characterised in that：The scraper motion includes motor
(13), active synchronization wheel (14), driven synchronizing wheel (15) and synchronous belt (16), the motor (13) are fixed on platform (5), institute
State active synchronization wheel (14) and driven synchronizing wheel (15) be located at the both ends of inner cavity (5-1), the active synchronization wheel (14) and
Driven synchronizing wheel (15) is rotatably arranged on platform (5), leads between the active synchronization wheel (14) and driven synchronizing wheel (15)
Synchronous belt (16) drive connection is crossed, output end and the active synchronization wheel (14) of the motor (13) are sequentially connected, the slide
(11) it is fixed on synchronous belt (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810594307.7A CN108682711A (en) | 2018-06-11 | 2018-06-11 | High-efficiency photovoltaic solder strip and its welding method and the screen printing apparatus for implementing this method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810594307.7A CN108682711A (en) | 2018-06-11 | 2018-06-11 | High-efficiency photovoltaic solder strip and its welding method and the screen printing apparatus for implementing this method |
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|---|---|
| CN108682711A true CN108682711A (en) | 2018-10-19 |
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ID=63810783
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|---|---|---|---|
| CN201810594307.7A Pending CN108682711A (en) | 2018-06-11 | 2018-06-11 | High-efficiency photovoltaic solder strip and its welding method and the screen printing apparatus for implementing this method |
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