CN102522443A - Material for prolonging service life of small amorphous silicon thin film solar cell component and packaging technology for small amorphous silicon thin film solar cell component - Google Patents
Material for prolonging service life of small amorphous silicon thin film solar cell component and packaging technology for small amorphous silicon thin film solar cell component Download PDFInfo
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- CN102522443A CN102522443A CN2012100099677A CN201210009967A CN102522443A CN 102522443 A CN102522443 A CN 102522443A CN 2012100099677 A CN2012100099677 A CN 2012100099677A CN 201210009967 A CN201210009967 A CN 201210009967A CN 102522443 A CN102522443 A CN 102522443A
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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
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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
Abstract
The invention discloses a material for prolonging the service life of a small amorphous silicon thin film solar cell component and a packaging technology for the small amorphous silicon thin film solar cell component. An epoxy resin floor with a self-leveling characteristic is adopted as a packaging material for an amorphous silicon thin film solar cell, and is acid and alkali resistant, aqueous vapor resistant, high in insulativity, attractive in appearance and durable. By the material, the small amorphous silicon thin film solar cell component can be comprehensively protected, a protective layer can be completely closely fused together with the amorphous silicon thin film solar cell, erosion caused by the entering of aqueous vapor and acid-base liquid can be effectively prevented, and the service life of the small amorphous silicon thin film solar cell component is prolonged.
Description
Technical field
The invention belongs to technical field of solar batteries, particularly a kind ofly be used to promote small pieces the non-crystal silicon thin-film solar cell component selection and the encapsulation technology thereof in useful life.
Background technology
Solar cell industry development in recent years is swift and violent, and along with the continuous reduction of cost, solar cell just progressively gets among people's the life, plays a greater and greater role.
Amorphous silicon thin-film solar cell is a kind of in the solar cell, and it has significant advantages such as low production cost, production process is environment friendly and pollution-free, low light level power generation performance is good, the high temperature power generation performance is good, the comprehensive electric generating ability is strong.Current wide development space arranged.Especially at off-grid small-sized solar battery applications product neck, huge advantages for development and development space are arranged like solar energy lamp, solar energy toy etc.
Generally speaking, the amorphous silicon thin-film solar cell product can be divided into small pieces type and large stretch of type.Wherein the small pieces type is that generated output is little, and generally below 10W, it is mainly used in solar energy lamp, and solar energy toy, solar charger etc. be from net consumer electronic product field, requires solar battery product useful life more than 3-5; Large stretch of type is that generated output is bigger, and generally more than 10W, it is mainly used in big-and-middle-sized photovoltaic generating system, like rooftop photovoltaic systems, and the desert photovoltaic plant, BIPV photovoltaic generating systems etc. require solar battery product useful life more than 20 years.
The battery manufacturing process of each amorphous silicon thin-film solar cell manufacturer is more or less the same at present, and just owing to the difference of process detail and equipment performance, the electrical property of the amorphous silicon thin-film solar cell product of different vendor has certain difference, but difference is little.
By contrast, amorphous silicon thin-film solar cell actual life is prior properties of product measurement index.
The encapsulation technology of amorphous silicon thin-film solar cell is the decision key in its useful life.Several kinds of schemes encapsulate below main at present the employing:
First kind: adopt the EVA material, encapsulate with glass laminates.This packaging effect is best, can guarantee that product uses more than 20 years out of doors.But this technical costs is higher; Mainly be used on the large stretch of type non-crystal silicon thin-film solar cell component product that is applied to medium-and-large-sized photovoltaic generating system, should technology and be applied to the suitable employing of amorphous silicon thin-film solar cell product of the small-sized solar product in consumption electronic products field.
Second kind: encapsulate above being attached to the thin-film solar cells layer with the PVC glued membrane.The shortcoming of this mode is: the packaging effect that the PVC glued membrane attaches is general, and steam very easily immerses battery layers, corrodes solar cell; PVC glued membrane attachment process forms bubble easily, influences reduction rate of finished products attractive in appearance, and bubble area also is etched easily simultaneously; The ultrasonic spot welding poor effect, UV glue easy ageing in actual use comes off, and is attractive in appearance inadequately; It is short to adopt the encapsulation of PVC film to be directly exposed to outdoor Acceptable life, usually about half a year.
The third: adopt the method for silk screen printing acid and alkali-resistance printing ink, encapsulate at the printing ink of amorphous silicon thin-film solar cell surface printing one deck acid and alkali-resistance.This technology derives from the technology of printing protection printing ink protective circuit plate in the circuit board manufacturing process.Its packaging technology flow process is: draw wire bonds at large stretch of amorphous silicon thin-film solar cell design attitude place on screen printer print and use conductive copper cream, baking and curing; Carry out silk screen printing second time silk screen printing last layer protection printing ink (does not print conductive copper cream position) on the monoblock battery again, baking and curing.Carry out glass-cutting again, large stretch of battery is cut into the small pieces battery that designs, more manual welding lead on conductive copper cream.This technological shortcoming is: 1. production technology is complicated, needs screen printing apparatus, and silk screen printing process requires high; It is the potential risk that reduces the life-span that the silk-screen technology must be stayed the clear area of 1mm left and right sides width on battery four limits usually so that locate and make things convenient for large-scale production, silk-screen unprotect district, four limits; 2. because the small pieces amorphous silicon thin-film solar cell all is large stretch of amorphous silicon thin-film solar cells by same specification cuts by design size and domain through glass cutting machine and form; Its silk-screen also is the disposable silk-screen of on sheet, accomplishing; Therefore around every small pieces, need stay the clear area of certain interval (1-2mm) so that make things convenient for the glass-cutting location; Reduce subsequent technique flow process complexity, reduce cost; 3. because the operation that silk-screen causes is complicated, rate of finished products is not high enough; 4. ink for screen printing very thin thickness (can't further thicken protective layer) scratches easily and injures battery.
It seems that totally at present in the encapsulation technology field of small pieces type amorphous silicon thin-film solar cell, it is easy still to lack a kind of production technology, when effectively promoting battery useful life, have the low encapsulation technology of cost.
Summary of the invention
The present invention is exactly the deficiency to technology; A kind of be used to promote small pieces the non-crystal silicon thin-film solar cell component selection and the encapsulation technology thereof in useful life are proposed; Realization is to the general protection of small pieces amorphous silicon thin-film solar cell; Protective layer and amorphous silicon thin-film solar cell are merged fully closely, effectively isolate preventing that steam, soda acid liquid from getting into the erosion that caused to improve small pieces amorphous silicon thin-film solar cell useful life.
Of the present inventionly be used to promote the selection in useful life of small pieces non-crystal silicon thin-film solar cell component, it is characterized in that said encapsulation amorphous silicon thin-film solar cell is from the levelling encapsulating material, like the epoxy resin terrace.
Adopt magnetron sputtering or evaporation coating to prepare one deck alloy film on the described amorphous silicon membrane battery back of the body battery, said alloy film is nickel alloy NiX film or corronil film.
Further, through alloy firm, realization can directly be used the scolding tin welding lead at the amorphous silicon thin-film solar cell back side.
The encapsulation technology that is used to promote small pieces non-crystal silicon thin-film solar cell component useful life of the present invention is:
The first step: behind the large stretch of completion of the amorphous silicon thin-film solar cell back electrode plated film, prepare one deck alloy firm with magnetron sputtering or evaporation coating method, said alloy film is nickel alloy NiX film or corronil film;
Second step: carry out laser grooving and scribing, it is disconnected to adopt the green laser of 532nm wavelength that battery back electrode and alloy material are drawn, and forms traditional strip tandem amorphous silicon thin-film solar cell structure;
The 3rd step: adopt the laser machine in the step 2, at amorphous silicon thin-film solar cell marked welding lead location point;
The 4th step: with the method for electric welding machine or manual welding at the welding mark place direct scolding tin welding battery lead;
The 5th step: mix up from levelling encapsulating material epoxy resin terrace, use automatic roll brushing apparatus, or manually adopt round brush, encapsulating material evenly directly is coated on large stretch of battery, form encapsulated layer;
The 6th step: large stretch of battery that will coat is placed on the loading shelf of level, waits it from levelling, realizes automatically evenly applying;
The 7th the step: from the levelling encapsulating material behind levelling, carry out air-dry;
The 8th step: adopt glass cutting machine that encapsulating material has been solidified large stretch of battery and cut into the small pieces that design, promptly form the small pieces non-crystal silicon thin-film solar cell component.
Further, described round brush is bright and clean dustproof static-proof electricity material.
Beneficial effect of the present invention is: main innovation part of the present invention is to possess the encapsulating material of the epoxy resin terrace of the anti-soda acid from the levelling characteristics, anti-steam, good insulating, attractive and durable material as amorphous silicon thin-film solar cell through employing; Its main feature is can be comprehensive, and complete clad battery All Ranges can be regulated protective layer thickness; Adhesion property is good; Can guarantee effectively that cell package do not have the dead band, guarantee the outdoor long service life of battery, simultaneously since encapsulating material have from the levelling characteristics; It adopts simply can realize encapsulation to the not high coating processes of required precision, and needn't adopt complicated special purpose machinery.
Embodiment
The selection that is used to promote small pieces non-crystal silicon thin-film solar cell component useful life of the present invention is adopted and from levelling, curing voluntarily, good insulating, color material attractive in appearance, the acid and alkali-resistance moisture attacks amorphous silicon thin-film solar cell is encapsulated, like self leveling epoxy resin floor material.
Adopt magnetron sputtering or evaporation coating to prepare one deck alloy film on the described amorphous silicon membrane battery back electrode, said alloy film is nickel alloy NiX film or corronil film.
Further, through alloy firm, realization can directly be used the scolding tin welding lead at the amorphous silicon thin-film solar cell back side.
Utilize the method for epoxy resin floor material encapsulation small pieces non-crystal silicon thin-film solar cell component to be:
The first step: behind the large stretch of completion of the amorphous silicon thin-film solar cell back electrode plated film, prepare one deck alloy firm with magnetron sputtering or evaporation coating method, said alloy film is nickel alloy NiX film or corronil film;
Second step: carry out laser grooving and scribing, it is disconnected to adopt the green laser of 532nm wavelength that battery back electrode and alloy material are drawn, and forms traditional strip tandem amorphous silicon thin-film solar cell structure;
The 3rd step: adopt the laser machine in the step 2, at amorphous silicon thin-film solar cell marked welding lead location point;
The 4th step: with the method for electric welding machine or manual welding at the welding mark place direct scolding tin welding battery lead;
The 5th step: mix up from levelling encapsulating material epoxy resin terrace, use automatic roll brushing apparatus, or manually adopt round brush, encapsulating material evenly directly is coated on large stretch of battery, form encapsulated layer;
The 6th step: large stretch of battery that will coat is placed on the loading shelf of level, waits it from levelling, realizes automatically evenly applying;
The 7th the step: from the levelling encapsulating material behind levelling, carry out air-dry;
The 8th step: adopt glass cutting machine that encapsulating material has been solidified large stretch of battery and cut into the small pieces that design, promptly form the small pieces non-crystal silicon thin-film solar cell component.
Further, described round brush is bright and clean dustproof static-proof electricity material.
Special, technological process of the present invention also not exclusively is confined to above-mentioned encapsulation order, like welding sequence, can reserve solder joint with scolding tin earlier, final step welding lead again, and it is convenient that glass-cutting operation like this may be carried out; Solder joint labeling method and for example can adopt the method for other non-laser markings.
Claims (6)
1. be used to promote the selection in useful life of small pieces non-crystal silicon thin-film solar cell component, it is characterized in that, said encapsulation amorphous silicon thin-film solar cell is from the levelling encapsulating material, like the epoxy resin terrace.
2. as claimed in claim 1ly be used to promote the selection in useful life of small pieces non-crystal silicon thin-film solar cell component; It is characterized in that; Adopt magnetron sputtering or evaporation coating to prepare one deck alloy film on the described amorphous silicon membrane battery back of the body battery, said alloy film is nickel alloy NiX film or corronil film.
3. as claimed in claim 2ly be used to promote the selection in useful life of small pieces non-crystal silicon thin-film solar cell component, it is characterized in that through alloy firm, realization can directly be used the scolding tin welding lead at the amorphous silicon thin-film solar cell back side.
4. as claimed in claim 1ly be used to promote the selection in useful life of small pieces non-crystal silicon thin-film solar cell component, it is characterized in that the described characteristics that possess good insulating, acid and alkali-resistance and moisture attacks from the levelling encapsulating material.
5. utilize the described method of claim 1 to be from levelling encapsulating material encapsulation small pieces non-crystal silicon thin-film solar cell component:
The first step: behind the large stretch of completion of the amorphous silicon thin-film solar cell back electrode plated film, prepare one deck alloy firm with magnetron sputtering or evaporation coating method, said alloy film is nickel alloy NiX film or corronil film;
Second step: carry out laser grooving and scribing, it is disconnected to adopt the green laser of 532nm wavelength that battery back electrode and alloy material are drawn, and forms traditional strip tandem amorphous silicon thin-film solar cell structure;
The 3rd step: adopt the laser machine in the step 2, at amorphous silicon thin-film solar cell marked welding lead location point;
The 4th step: with the method for electric welding machine or manual welding at the welding mark place direct scolding tin welding battery lead;
The 5th step: mix up from levelling encapsulating material epoxy resin terrace, use automatic roll brushing apparatus, or manually adopt round brush, encapsulating material evenly directly is coated on large stretch of battery, form encapsulated layer;
The 6th step: large stretch of battery that will coat is placed on the loading shelf of level, waits it from levelling, realizes automatically evenly applying;
The 7th the step: from the levelling encapsulating material behind levelling, carry out air-dry;
The 8th step: adopt glass cutting machine that encapsulating material has been solidified large stretch of battery and cut into the small pieces that design, promptly form the small pieces non-crystal silicon thin-film solar cell component.
6. utilization as claimed in claim 5 is characterized in that from the method for levelling encapsulating material encapsulation small pieces non-crystal silicon thin-film solar cell component described round brush is bright and clean dustproof static-proof electricity material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100099677A CN102522443A (en) | 2012-01-13 | 2012-01-13 | Material for prolonging service life of small amorphous silicon thin film solar cell component and packaging technology for small amorphous silicon thin film solar cell component |
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| CN2012100099677A CN102522443A (en) | 2012-01-13 | 2012-01-13 | Material for prolonging service life of small amorphous silicon thin film solar cell component and packaging technology for small amorphous silicon thin film solar cell component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106069239A (en) * | 2016-07-08 | 2016-11-09 | 林业城 | A kind of self energizing power saws for landscape engineering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2205991Y (en) * | 1994-10-14 | 1995-08-23 | 李毅 | Solar noncrystalline silicon cell |
| CN1816916A (en) * | 2003-07-07 | 2006-08-09 | 陶氏康宁公司 | Encapsulation of solar cells |
| US20100197051A1 (en) * | 2009-02-04 | 2010-08-05 | Applied Materials, Inc. | Metrology and inspection suite for a solar production line |
| CN102082207A (en) * | 2010-12-14 | 2011-06-01 | 英利能源（中国）有限公司 | Photovoltaic battery component packaged by heat-shrinkable material and preparation method thereof |
| CN102120907A (en) * | 2011-03-30 | 2011-07-13 | 华南理工大学 | Solvent-free nano composite epoxy resin floor coating and preparation method thereof |
-
2012
- 2012-01-13 CN CN2012100099677A patent/CN102522443A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2205991Y (en) * | 1994-10-14 | 1995-08-23 | 李毅 | Solar noncrystalline silicon cell |
| CN1816916A (en) * | 2003-07-07 | 2006-08-09 | 陶氏康宁公司 | Encapsulation of solar cells |
| US20100197051A1 (en) * | 2009-02-04 | 2010-08-05 | Applied Materials, Inc. | Metrology and inspection suite for a solar production line |
| CN102082207A (en) * | 2010-12-14 | 2011-06-01 | 英利能源（中国）有限公司 | Photovoltaic battery component packaged by heat-shrinkable material and preparation method thereof |
| CN102120907A (en) * | 2011-03-30 | 2011-07-13 | 华南理工大学 | Solvent-free nano composite epoxy resin floor coating and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106069239A (en) * | 2016-07-08 | 2016-11-09 | 林业城 | A kind of self energizing power saws for landscape engineering |
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Application publication date: 20120627 |