CN104029469A - Screen printing plate for solar battery and method of manufacturing solar battery - Google Patents
Screen printing plate for solar battery and method of manufacturing solar battery Download PDFInfo
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- CN104029469A CN104029469A CN201410245570.7A CN201410245570A CN104029469A CN 104029469 A CN104029469 A CN 104029469A CN 201410245570 A CN201410245570 A CN 201410245570A CN 104029469 A CN104029469 A CN 104029469A
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- printing
- solar cell
- metal electrode
- silicon chip
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- 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
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Abstract
The invention relates to a screen printing plate for a solar battery and a method of producing the solar battery.The plate is characterized by comprising a screen printing plate frame part, an elastomeric polyester screen part and a printing part, wherein the elastomeric polyester screen part is connected with the screen printing plate frame part and the printing part, and the printing part is a reticular metal sheet which is provided with meshes distributed uniformly cellularly.The method of producing the solar battery with the screen printing plate comprises the following steps of: carrying out felting and cleaning processes on a silicon wafer, diffusing the felted and cleaned silicon wafer, etching and depositing the diffused silicon wafer, printing a first metal electrode for the etched and deposited silicon wafer with the screen printing plate, and then metallizing the silicon wafer after subjected to metal electrode printing.The service life of the screen printing plate can be prolonged, a figure required by the solar battery printed by a silk-screen printing process can be prevented from deformation, and the width of the electrode can be controlled precisely.
Description
Technical field
The present invention relates to solar cell and manufacture field, relate in particular to a kind of method of printing screen plate and production solar cell for solar cell.
Background technology
In solar cell manufacture process, silk-screen printing technique is very crucial connectivity technique, and its Main Function is printing solar cell required various figures (metal level), as conductive metal electrode (positive electrode and negative electrode) etc.If the printing precision of silk-screen printing technique does not reach requirement, will cause solar cell to become useless sheet, so the selection of printing screen plate is of crucial importance.Because steel wire resilience in comparison polyester webs has, string diameter is thin, order number is many, wearability good, and intensity is high, dimensionally stable, draftability are little, ink the feature such as gets well by performance, is applicable to produce solar cell silk-screen printing technique.But steel wire also exists inelastic shortcoming, in printing process, need to discharge the stress of steel wire.The solar cell of prior art comprises the steel wire as the portion that undertakes the printing of, elastic polyester wet end and the half tone frame portion 3 of release steel wire stress with printing screen plate, in the scope of the graphics field that need to print in steel wire.
But at least still there is following problem with printing screen plate in the solar cell of this structure:
1, because metal paste is more and more tending towards high viscosity in characteristic, in continuous printing situation, because steel wire tension force sharply declines, be easy to torsional deformation, thereby cause the figure of printing to deform, need to change more continually printing screen, increased production cost; In addition, in current solar cell is produced, for the efficient light absorption area that increases silicon chip is to promote conversion efficiency, the width of the electrode of battery (main grid line and secondary grid line) is more and more thinner, due to the yielding width that is difficult to accurate control electrode of steel wire;
2, steel wire torsional deformation makes the new printing screen plate of changing and is about to reach between the figure of printing screen plate printing in service life to have larger difference, affected product quality, also easily there are quality problems in the intermediate products that obtain like this in follow-up other technical process.
Summary of the invention
The problems referred to above that exist in order to solve prior art, the invention provides a kind of method of printing screen plate and production solar cell for solar cell, it not only can extend the service life of printing screen plate, and the required figure of the solar cell that can make silk-screen printing technique printing remain unchanged shape, the accurately width of control electrode.
For this reason, the present invention takes following technical scheme: a kind of solar cell printing screen plate, comprise half tone frame portion, elastic polyester wet end and the portion that undertakes the printing of, it is characterized in that, described elastic polyester wet end connect described half tone frame portion and described in the portion that undertakes the printing of, and described in the portion of undertaking the printing of be net metal thin plate, described net metal thin plate has cellular mesh of evenly arranging.
The combination that is shaped as quadrangle, circle, polygon or all kinds of shapes of described mesh.
Described net metal thin plate is made by electroforming process.
Described net metal thin plate is made by aluminium alloy or nickel alloy.
Described net metal gauge of sheet is 15 to 50 microns.
Described net metal gauge of sheet is 40 microns.
A kind of method step that adopts above-mentioned printing screen plate to produce solar cell is as follows: first silicon chip is carried out to making herbs into wool and cleaning; Silicon chip through making herbs into wool and after cleaning is spread; Silicon chip through diffusion is carried out to etching and deposition; Provide described half tone to carry out the first metal electrode printing to the silicon chip through over etching and deposition; Again the silicon chip through metal electrode printing is carried out to metallization process.
Before the step of the silicon chip of process metal electrode printing being carried out to metallization process, provide the second half tone to carry out metal electrode printing for the second time to the silicon chip through over etching and deposition.
Described the second metal electrode is positioned on described the first metal electrode, and the width of described the second metal electrode is less than the width of described the first metal electrode.
The invention has the beneficial effects as follows:
1, use net metal thin plate to substitute traditional stainless (steel) wire as the portion of undertaking the printing of, the steel wire opening that rectangular mesh on net metal thin plate becomes simulation passes through for printing slurry, mesh is more regular, even use full-bodied metal paste continuous printing, net metal thin plate of the present invention is also difficult for torsional deformation, thereby extended the service life of printing screen plate, reduced production cost;
2, because the portion of undertaking the printing of of the present invention is net metal thin plate, be therefore difficult for torsional deformation, make the required figure of the solar cell of printing indeformable, more reliable and more stable, thereby improved product quality;
3, the pulling force between figure and elastic polyester net becomes very large, therefore figure is unshift while printing, half tone tension force declines few, even be still very high through the dimension of picture precision of tens thousand of inferior printings; Be specially adapted to secondary or typography repeatedly;
4, figure height trickle (about 40u～80u), meanwhile, due to sheet metal thickness stable and consistent, has also improved the flatness of printed pattern greatly;
5, net metal thin plate strike through amount is good, and printing continuity is better, and hole is not easy card China ink and causes mesh to stop up.
The specific embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
A solar cell printing screen plate, comprise offer net metal thin plate (as the portion of undertaking the printing of), the half tone frame portion of a plurality of mesh and be located at net metal thin plate and half tone frame portion between elastic polyester wet end.On net metal thin plate, there is cellular mesh of evenly arranging, mesh is uniformly distributed in the ranks direction of net metal thin plate, the shape of mesh can be quadrangle, circle, other polygons (as pentagon, hexagon are waited for) or and combination in a kind of.Net metal thin plate can directly be made by electroforming process, also can make by beat a plurality of holes on sheet metal.Net metal thin plate can be made by the metal of the rigidity such as aluminium alloy or nickel alloy strong (being poor ductility), and thickness can be between 15 to 50 microns, and best is 40 microns.The effect of elastic polyester wet end is to discharge the stress of sheet metal in printing process.
The advantage of the present embodiment is: use net metal thin plate to substitute traditional steel wire as the portion of undertaking the printing of, the steel wire opening that rectangular mesh on net metal thin plate becomes simulation passes through for printing slurry, mesh is more regular, even use full-bodied metal paste continuous printing, the net metal thin plate of the present embodiment is also difficult for torsional deformation, thereby extended the service life of printing screen plate of the present invention, reduced production cost; Because the portion of undertaking the printing of of the present invention is net metal thin plate, be therefore difficult for torsional deformation, make the required figure of the solar cell of printing indeformable, more reliable and more stable, thereby improved product quality; Pulling force between figure and elastic polyester wet end becomes very large, therefore figure is unshift while printing, half tone tension force declines few, even be still very high through the dimension of picture precision of tens thousand of inferior printings; Be specially adapted to secondary or typography repeatedly; Figure height trickle (about 40u～80u), meanwhile, due to sheet metal thickness stable and consistent, has also improved the flatness of printed pattern greatly; Net metal thin plate strike through amount is good, and printing continuity is better, thereby hole is not easy Ka Mo, avoids causing mesh to stop up.
The present embodiment also provides a kind of method of producing solar cell, comprises silicon chip is carried out to making herbs into wool and cleaning; Described silicon chip through making herbs into wool and after cleaning is spread, the silicon chip through diffusion is carried out to etching and deposition; Provide the first half tone to carry out the first metal electrode printing to the described silicon chip through over etching and deposition; And the described silicon chip through metal electrode printing is carried out to metallization process;
As preferably, before the step of the silicon chip of process metal electrode printing being carried out to metallization process, also comprise and provide the second half tone to carry out the second metal electrode printing to the silicon chip through over etching and deposition, wherein, the second metal electrode is positioned on described the first metal electrode, and the width of the second metal electrode is less than the width of described the first metal electrode.
Finally, it should be pointed out that above embodiment is only the more representational example of the present invention.Obviously, the invention is not restricted to above-described embodiment, can also have many distortion.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all should think and belong to protection scope of the present invention.
Claims (9)
1. a solar cell printing screen plate, comprise half tone frame portion, elastic polyester wet end and the portion that undertakes the printing of, it is characterized in that, described elastic polyester wet end connect described half tone frame portion and described in the portion that undertakes the printing of, and described in the portion of undertaking the printing of be net metal thin plate, described net metal thin plate has cellular mesh of evenly arranging.
2. solar cell printing screen plate according to claim 1, is characterized in that, the combination that is shaped as quadrangle, circle, polygon or all kinds of shapes of described mesh.
3. according to the solar cell printing screen plate one of claim 1 to 2 Suo Shu, it is characterized in that, described net metal thin plate is made by electroforming process.
4. according to the solar cell printing screen plate one of claim 3 Suo Shu, it is characterized in that, described net metal thin plate is made by aluminium alloy or nickel alloy.
5. according to the solar cell printing screen plate one of claim 4 Suo Shu, it is characterized in that, described net metal gauge of sheet is 15 to 50 microns.
6. solar cell printing screen plate according to claim 5, is characterized in that, described net metal gauge of sheet is 40 microns.
7. a method of producing solar cell according to the printing screen plate described in claim 1-6, is characterized in that, first silicon chip is carried out to making herbs into wool and cleaning; Silicon chip through making herbs into wool and after cleaning is spread; Silicon chip through diffusion is carried out to etching and deposition; Provide described half tone to carry out the first metal electrode printing to the silicon chip through over etching and deposition; Again the silicon chip through metal electrode printing is carried out to metallization process.
8. the method for production solar cell according to claim 7, is characterized in that, before the step of the silicon chip of process metal electrode printing being carried out to metallization process, provides the second half tone to carry out metal electrode printing for the second time to the silicon chip through over etching and deposition.
9. the method for production solar cell according to claim 8, is characterized in that, described the second metal electrode is positioned on described the first metal electrode, and the width of described the second metal electrode is less than the width of described the first metal electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410245570.7A CN104029469A (en) | 2014-06-04 | 2014-06-04 | Screen printing plate for solar battery and method of manufacturing solar battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410245570.7A CN104029469A (en) | 2014-06-04 | 2014-06-04 | Screen printing plate for solar battery and method of manufacturing solar battery |
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| CN104029469A true CN104029469A (en) | 2014-09-10 |
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| CN201410245570.7A Pending CN104029469A (en) | 2014-06-04 | 2014-06-04 | Screen printing plate for solar battery and method of manufacturing solar battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111559161A (en) * | 2020-04-07 | 2020-08-21 | 苏州腾晖光伏技术有限公司 | Positive electrode screen printing plate of selective emitter solar cell |
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| CN103171264A (en) * | 2011-12-23 | 2013-06-26 | 昆山允升吉光电科技有限公司 | Solar energy battery electrode printing screen plate |
| CN103171256A (en) * | 2011-12-23 | 2013-06-26 | 昆山允升吉光电科技有限公司 | Solar cell electrode printing mask plate and manufacturing method thereof |
| CN103646987A (en) * | 2013-11-06 | 2014-03-19 | 江西弘宇太阳能热水器有限公司 | Front electrode of silicon solar cell and preparation method thereof |
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2014
- 2014-06-04 CN CN201410245570.7A patent/CN104029469A/en active Pending
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| CN101318401A (en) * | 2007-06-08 | 2008-12-10 | 富葵精密组件(深圳)有限公司 | Screen printing plate and manufacturing method thereof |
| CN101555607A (en) * | 2009-04-20 | 2009-10-14 | 昆山美微电子科技有限公司 | Electroforming metal film mesh plate for printing touch mesh spacing contacts |
| CN102214725A (en) * | 2010-04-01 | 2011-10-12 | 无锡尚德太阳能电力有限公司 | Printing screen for solar cell and method for producing solar cell |
| CN201633260U (en) * | 2010-04-23 | 2010-11-17 | 昆山美微电子科技有限公司 | Composite halftone for solar-energy electroforming metal flat screen |
| CN202088647U (en) * | 2011-04-13 | 2011-12-28 | 昆山良品丝印器材有限公司 | Crystalline silicon printing steel sheet composite screen |
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| CN111559161A (en) * | 2020-04-07 | 2020-08-21 | 苏州腾晖光伏技术有限公司 | Positive electrode screen printing plate of selective emitter solar cell |
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Application publication date: 20140910 |