CN101707227B - Manufacture method of film solar cell component bus bar and film solar cell component - Google Patents
Manufacture method of film solar cell component bus bar and film solar cell component Download PDFInfo
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- CN101707227B CN101707227B CN 200910209612 CN200910209612A CN101707227B CN 101707227 B CN101707227 B CN 101707227B CN 200910209612 CN200910209612 CN 200910209612 CN 200910209612 A CN200910209612 A CN 200910209612A CN 101707227 B CN101707227 B CN 101707227B
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- film solar
- solar cell
- busbar
- insulation strip
- bus bar
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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
- 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
Abstract
The invention provides a manufacture method of a film solar cell component bus bar, which comprises the following steps of: forming at least one bus bar on a back contact layer of a film solar cell by using conductive sizing agent through a screen printing process, and curing the film solar cell on which the bus bar is formed. The invention also provides a manufacture method of a film solar cell component and a film solar cell component. The invention solves the potential problem of air bubble interception and lamination failure in the traditional fusion welding process, improves the service life and the working efficiency of the solar cell component bus bar, greatly simplifies the manufacture procedures of the solar cell component bus bar, improves the production efficiency of the film solar cell and reduces the production cost.
Description
Technical field
The present invention relates to Thinfilm solar cell assembly and make field, particularly a kind of manufacture method of film solar cell component bus bar and corresponding thin film solar battery module.
Background technology
Thin film solar battery module need use busbar that the electric current that battery generates is pooled together, it usually uses zinc-plated copper strips to reach the purpose that electric current compiles as the back contact fusion weld of busbar and thin film solar cell, and back contact generally adopts the PVD metal film.The fusion weld of existing busbar and back contact adopts complicated manufacturing system to make usually, manufacturing process relates to many aspects such as flux distribution, thermal weld, pneumatics, linear movement control and welding position adjustment at least, needs to be equipped with accurate control appliance and accurately controls.And the welding of carrying out busbar and PVD metal film in the mode of fusion weld damages the PVD metal film that constitutes back contact easily, and pollutes easily.In addition, the busbar that fusion weld forms can bulge into scalariform on back contact, and this can form problems such as voids after component lamination, thereby increases the risk of lamination failure.
Summary of the invention
For addressing the above problem, the objective of the invention is to improve the manufacturing process of film solar cell component bus bar, to abandon expensive complicated busbar welding system.
For achieving the above object, the invention provides a kind of manufacture method of film solar cell component bus bar, it may further comprise the steps:
On the back contact of thin film solar cell, use electrocondution slurry to form the step of at least one busbar by the silk-screen printing technique printing;
The thin film solar cell that is formed with described busbar is cured the step of processing.
As preferably, described use electrocondution slurry comprises by the step that the silk-screen printing technique printing forms at least one busbar: use electrocondution slurry to print respectively in the both sides of the back contact of thin film solar cell by silk-screen printing technique and form the side busbar and solidify; Use dielectric ink on the back contact of thin film solar cell, to form insulation strip and curing in the Width printing of described back contact and two these side busbars of side busbar upper edge, and each side busbar is non-intersect folded to small part and insulation strip by silk-screen printing technique; Use the electrocondution slurry printing to form at least two mutual disjunct horizontal busbars and curing by silk-screen printing technique at the length direction of this insulation strip of described insulation strip upper edge, an end of each described horizontal busbar and the side busbar of respective side electrically connect.
As preferably, the width of described horizontal busbar is less than the width of insulation strip.
As preferably, described insulation strip only overlaps with a marginal portion of each described side busbar.
Preferred as another, two marginal portions of described insulation strip and each described side busbar overlap.
Cured step in the above-mentioned steps can be all to be cured processing after each road silkscreen process, also can be to be cured processing more together after above-mentioned all silkscreen process are all finished.
As preferably, described cured is undertaken by the ultraviolet curing machine;
Preferred as another, described cured is undertaken by the heat tunnel drying oven.
The present invention has proposed a kind of manufacture method of thin film solar battery module on the other hand, comprises the step that forms the component bus bar of described thin film solar cell by the manufacture method of above-mentioned film solar cell component bus bar in this manufacture method.
Another aspect of the invention has proposed a kind of thin film solar battery module, comprising: the side busbar, and it is arranged at the both sides of the back contact of thin film solar cell; Insulation strip, the length direction of itself and described side busbar is arranged on the back contact of thin film solar cell perpendicularly, and each side busbar to small part and insulation strip non-overlapping; Article at least two, mutual disjunct horizontal busbar, it is arranged on the described insulation strip, and an end of each described horizontal busbar forms with the described side busbar of respective side and is electrically connected; Wherein, described side busbar and horizontal busbar use the electrocondution slurry printing to form by silk-screen printing technique, and described insulation strip uses the dielectric ink printing to form by silk-screen printing technique.
As preferably, the marginal portion of each end of described insulation strip and the side busbar of respective side is overlapping.
As preferably, the width of described horizontal busbar is less than the width of insulation strip.
The present invention has eliminated the problem of voids potential in the existing fusion weld technology and lamination failure, need not adopt the busbar welding equipment and the technology of original complexity, craft precision is controlled easily, the manufacturing process of having simplified busbar assembly to a great extent simultaneously, improve the production efficiency of thin film solar cell, reduced production cost.
Description of drawings
Fig. 1 is the flow chart of an embodiment of the manufacture method of film solar cell component bus bar of the present invention;
Fig. 2 is the flow chart of another embodiment of the manufacture method of film solar cell component bus bar of the present invention;
Fig. 3 a-3c is a process schematic diagram of making component bus bar according to flow process shown in Figure 2.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.
Fig. 1 is the flow chart of an embodiment of the manufacture method of film solar cell component bus bar of the present invention, and as shown in the figure, this flow process may further comprise the steps:
S01 on the back contact of thin film solar cell, uses electrocondution slurry to form at least one busbar by the silk-screen printing technique printing;
S02 is cured processing to the thin film solar cell that is formed with described busbar.
In the present embodiment, the scheme that adopts electrocondution slurry (for example, silver slurry) to carry out silk screen printing and cured subsequently substitutes and adopts the tin-coated copper band to carry out the scheme of fusion weld.
Silk-screen printing technique is widely used in PCB and the crystal-silicon solar cell industry, and common silk screen can be made 4mil or lower printing precision easily.And the fixture of using in the present embodiment that is used for fixing silk screen (for example reference column) is simple to operation, well locatees calibration thereby can and add between the silk screen of frame at the glass substrate assembly of thin film solar cell.
Carry out the manufacturing of film solar cell component bus bar by the method for present embodiment, can abandon expensive complicated welding/kinematic system.And, the component bus bar that forms by method printing of the present invention has more durability and contacts fixing than the busbar that forms by fusion weld, the controllable thickness of the busbar that printing simultaneously forms is built in very low range, as 2mil, this has eliminated potential air bubble problem in the fusion weld scheme, avoids occurring in the follow-up component lamination operation bad product.
In one embodiment of the invention, cured in the above-mentioned S02 step uses ultraviolet ray (UV) curing machine to carry out, this UV solidifies machine can be installed in the transmission line that is used to transmit the thin film solar cell that is printed with busbar, thereby the busbar assembly that is formed by electrocondution slurry on this thin film solar cell is cured.
In another embodiment of the present invention, cured in the above-mentioned S02 step uses the heat tunnel drying oven to carry out, the thin film solar cell that is printed with busbar is conveyed into this heat tunnel drying oven, thereby the busbar assembly that is formed by electrocondution slurry on the thin film solar cell is cured by the heat tunnel drying oven.
Fig. 2 is the flow chart of another embodiment of the manufacture method of film solar cell component bus bar of the present invention, and as shown in the figure, this flow process may further comprise the steps;
S11 uses electrocondution slurry to print respectively in the both sides of the back contact of thin film solar cell by silk-screen printing technique and forms the side busbar;
S12 uses dielectric ink to form insulation strip by silk-screen printing technique along the Width printing along this side busbar on the back contact of thin film solar cell, and each side busbar to small part and insulation strip non-overlapping;
S13 uses the electrocondution slurry printing to form at least two mutual disjunct horizontal busbars by silk-screen printing technique at the length direction of this insulation strip of described insulation strip upper edge, and makes an end of each horizontal busbar and the side busbar of respective side electrically connect;
S14 is cured processing to the thin film solar cell that is formed with described busbar.
With reference to Fig. 3 a-3c, in the present embodiment, at first electrocondution slurry is printed on the left and right sides of the back contact 31 of thin film solar cell, forms side busbar 32 respectively, shown in Fig. 3 a, side busbar 32 is arranged at the both sides of the back contact 31 of thin film solar cell respectively; Secondly, on the back contact that is formed with side busbar 32 31 shown in Fig. 3 a, laterally print with dielectric ink, promptly the Width along side busbar 32 prints, obtain horizontal insulation strip 33, shown in Fig. 3 b, insulation strip 33 is horizontally set on the back contact 31, insulation strip 33 does not have printing ink to pass through with the position that side busbar 32 intersects, preferably, in order better to avoid problem of short-circuit, at the position that the end of insulation strip 33 and side busbar 32 intersect, insulation strip 33 is overlapping with the marginal portion of side busbar 32, shown in the partial enlarged drawing on right side among Fig. 3 b; At last, print two horizontal busbars 34 at its length direction of insulation strip 33 upper edges with electrocondution slurry, shown in Fig. 3 c, laterally busbar 34 is arranged on the insulation strip 33, contact with side busbar 32 by silk screen with the position electrocondution slurry that side busbar 32 intersects at horizontal busbar 34, form electrically contact, so that the electric current of side busbar 32 is drawn;
Subsequently the thin film solar cell that is formed with busbar and insulation strip is cured processing.Described cured step can be all to be cured processing after each road silkscreen process, also can be to be cured processing more together after above-mentioned all silkscreen process are all finished.
In the present embodiment, the end of the insulation strip that above-mentioned S12 step is printed can be overlapping with two edge parts of side busbar at the position that the side busbar of itself and respective side intersects, shown in the partial enlarged drawing among Fig. 3 b.But in other embodiments of the invention, the end of insulation strip is also can be only overlapping with the inside edge portion of the side busbar of respective side.
Another embodiment of the present invention provides a kind of manufacture method of thin film solar battery module, and it comprises that the method for utilizing above-mentioned manufacturing film solar cell component bus bar forms the step of component bus bar.This thin film solar battery module provided by the invention has good current collection performance and longer useful life, and its production technology is simplified.
Shown in Fig. 3 a-3a, the present invention also provides a kind of embodiment of thin film solar battery module.In this embodiment, thin film solar battery module comprises back contact 31, side busbar 32, insulation strip 33 and horizontal busbar 34.
In the present embodiment, the side busbar of solar module, insulation strip and horizontal busbar form by silk-screen printing technique, this has improved the useful life and the operating efficiency of solar module, the manufacturing process of having simplified solar module to a great extent simultaneously, improve production efficiency, reduced production cost.
In an embodiment of the present invention, adopt silk-screen printing technique to form side busbar, insulation strip and horizontal busbar, eliminated the problem of voids potential in the existing fusion weld technology and lamination failure, the useful life and the operating efficiency of busbar assembly have been improved, the manufacturing process of having simplified component bus bar to a great extent simultaneously, improve the production efficiency of thin film solar cell, reduced production cost.
The present invention is not limited to above-mentioned particular implementation example; do not deviating under spirit of the present invention and the real situation thereof; skilled personnel can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong within the claims protection range of the present invention.
Claims (9)
1. the manufacture method of a film solar cell component bus bar is characterized in that, may further comprise the steps:
On the back contact of thin film solar cell, use electrocondution slurry to form the step of at least one busbar by the silk-screen printing technique printing;
The thin film solar cell that is formed with described busbar is cured the step of processing,
Wherein, described use electrocondution slurry comprises by the step that the silk-screen printing technique printing forms at least one busbar:
Use electrocondution slurry to print respectively in the both sides of the back contact of thin film solar cell and form the side busbar by silk-screen printing technique;
Use dielectric ink to form insulation strip in the Width printing of this side busbar of the back contact upper edge of thin film solar cell by silk-screen printing technique, and each side busbar to small part and insulation strip non-overlapping;
Use the electrocondution slurry printing to form at least two mutual disjunct horizontal busbars by silk-screen printing technique at the length direction of this insulation strip of described insulation strip upper edge, and make an end of each described horizontal busbar and the described side busbar of respective side electrically connect.
2. the manufacture method of film solar cell component bus bar as claimed in claim 1 is characterized in that, the marginal portion of each end of described insulation strip and the side busbar of respective side is overlapping.
3. the manufacture method of film solar cell component bus bar as claimed in claim 1 or 2 is characterized in that, the width of described horizontal busbar is less than the width of insulation strip.
4. the manufacture method of film solar cell component bus bar as claimed in claim 1 is characterized in that, the step of described cured is undertaken by the ultraviolet curing machine.
5. the manufacture method of film solar cell component bus bar as claimed in claim 1 is characterized in that, the step of described cured is undertaken by the heat tunnel drying oven.
6. the manufacture method of a thin film solar battery module is characterized in that, comprises by make the step of component bus bar as the manufacture method of each described film solar cell component bus bar in the claim 1 to 5.
7. a thin film solar battery module is characterized in that, comprising:
The side busbar, it is arranged at the both sides of the back contact of thin film solar cell;
Insulation strip, the length direction of itself and described side busbar is arranged on the back contact of described thin film solar cell perpendicularly, and each side busbar to small part and insulation strip non-overlapping;
Article at least two, mutual disjunct horizontal busbar, it is arranged on the described insulation strip, and the described side busbar of an end of each described horizontal busbar and respective side electrically connects;
Wherein, described side busbar and horizontal busbar use the electrocondution slurry printing to form by silk-screen printing technique, and described insulation strip uses the dielectric ink printing to form by silk-screen printing technique.
8. thin film solar battery module as claimed in claim 7 is characterized in that, the marginal portion of each end of described insulation strip and the side busbar of respective side is overlapping.
9. thin film solar battery module as claimed in claim 7 is characterized in that the width of described horizontal busbar is less than the width of insulation strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910209612 CN101707227B (en) | 2009-10-30 | 2009-10-30 | Manufacture method of film solar cell component bus bar and film solar cell component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910209612 CN101707227B (en) | 2009-10-30 | 2009-10-30 | Manufacture method of film solar cell component bus bar and film solar cell component |
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| Publication Number | Publication Date |
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| CN101707227A CN101707227A (en) | 2010-05-12 |
| CN101707227B true CN101707227B (en) | 2011-07-20 |
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| CN 200910209612 Expired - Fee Related CN101707227B (en) | 2009-10-30 | 2009-10-30 | Manufacture method of film solar cell component bus bar and film solar cell component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012109777A1 (en) | 2012-10-15 | 2014-04-17 | Heliatek Gmbh | Method for printing optoelectronic components with busbars |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347392A (en) * | 2010-08-02 | 2012-02-08 | 新日光能源科技股份有限公司 | Solar battery and electrode structure and manufacturing method thereof |
| CN102509747A (en) * | 2011-11-08 | 2012-06-20 | 江西赛维Ldk太阳能高科技有限公司 | Connecting method for solar cells and bus-bar with conductive adhesives |
| CN107611211A (en) * | 2017-09-20 | 2018-01-19 | 山东拜科通新材料科技有限公司 | The method and circuit of a kind of enhancing electrical safety performance for solar energy back contacts |
| CN108878587A (en) * | 2018-06-27 | 2018-11-23 | 北京铂阳顶荣光伏科技有限公司 | A kind of light transmission processing method of photovoltaic chip |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1917236A (en) * | 2005-06-16 | 2007-02-21 | 三洋电机株式会社 | Method for manufacturing photovoltaic module |
| CN101373796A (en) * | 2007-08-02 | 2009-02-25 | 三洋电机株式会社 | Solar cell module and method for manufacturing the same |
-
2009
- 2009-10-30 CN CN 200910209612 patent/CN101707227B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1917236A (en) * | 2005-06-16 | 2007-02-21 | 三洋电机株式会社 | Method for manufacturing photovoltaic module |
| CN101373796A (en) * | 2007-08-02 | 2009-02-25 | 三洋电机株式会社 | Solar cell module and method for manufacturing the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012109777A1 (en) | 2012-10-15 | 2014-04-17 | Heliatek Gmbh | Method for printing optoelectronic components with busbars |
| WO2014060912A1 (en) | 2012-10-15 | 2014-04-24 | Heliatek Gmbh | Method for imprinting opto-electronic components with bus bars |
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| Publication number | Publication date |
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| CN101707227A (en) | 2010-05-12 |
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