CN104425641A - High-reflection solar-cell back film and processing technology thereof - Google Patents
High-reflection solar-cell back film and processing technology thereof Download PDFInfo
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- CN104425641A CN104425641A CN201310362928.XA CN201310362928A CN104425641A CN 104425641 A CN104425641 A CN 104425641A CN 201310362928 A CN201310362928 A CN 201310362928A CN 104425641 A CN104425641 A CN 104425641A
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- basic unit
- solar cell
- reflector
- whitewash
- high reverse
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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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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- Optical Elements Other Than Lenses (AREA)
Abstract
Disclosed are a high-reflection solar-cell back film and a processing technology thereof. The high-reflection solar-cell back film is characterized by including a substrate, a reflection layer which coats the outer surface of the substrate, and a bottom layer which is on the inner surface of the substrate. A high-brightness spherical surface or a pyramid structure adopted in the high-reflection solar-cell back film increases an area of absolute reflection so as to increase diffuse reflection and thus the power gain of a solar cell assembly is improved so that the overall generated power of a photovoltaic assembly is increased. The adopted processing technology is simpler and the yield is high.
Description
Technical field:
The present invention relates to a kind of encapsulating material for solar module, particularly relate to a kind of high reverse--bias solar cell notacoria, relate to a kind of technique of processing this notacoria simultaneously.
Background technology:
Solar panel is a laminated construction normally, mainly comprises surface layer of glass, EVA sealant, solar cell piece, EVA sealant and solar cell notacoria, and wherein solar cell piece is by two-layer EVA sealant sealed envelope.The Main Function of solar cell notacoria is the overall mechanical strength improving solar panel, water vapor permeable can be prevented in addition in sealant, affect the useful life of cell piece, passes through to increase reflection simultaneously, and the power improving assembly increases excessive.In order to improve the overall performance of notacoria, occur in prior art carrying out improved plan for notacoria in a large number.Such as, Japanese patent application publication No. is the patent of JP2008085294 (A), publication date is on April 10th, 2008, disclose a kind of solar battery back film and preparation method thereof, this notacoria comprises the resin molding on top layer, the resin molding at one deck Obstruct membrane and one deck back side, the main component of surface tree adipose membrane is polyethylene.One deck dielectric film is also had between surface tree adipose membrane and Obstruct membrane.Aluminium foil layer or organic oxidation layer are as barrier layer, and its back side resin molding main component is PEN and PET.The production cost of such scheme is low, function admirable, and its peel strength is high, and block-water performance is good, good weatherability.But notacoria reflection efficiency is lower in such scheme, solar module reflection power is increased excessive not ideal enough.
Summary of the invention:
Technical problem to be solved by this invention is the deficiency overcoming above-mentioned prior art, provides a kind of high reverse--bias solar cell notacoria with highly reflective.
Another technical problem to be solved by this invention is the deficiency overcoming above-mentioned prior art, provides a kind of processing technology can processing the solar cell notacoria with high reverse--bias performance.
According to a kind of high reverse--bias solar cell notacoria provided by the invention, comprise basic unit, be coated in the reflector of the outer surface of described basic unit, and be positioned at the bottom of described base layer interior surface.
According to a kind of high reverse--bias solar cell notacoria provided by the invention, also there is following attached technical characteristic:
Gather in described reflector multiple high whiteness sphere or pyramidal structure.
Described reflector is made by mechanical stamp or gas etching or chemical etching method.
Described reflector thickness is 50 microns-100 microns.
The thickness of described bottom is 10 microns-100 microns.
Described basic unit is PET basic unit, and the thickness of described basic unit is 0.2 millimeter-25 millimeters.
Described reflector is nanoscale fluor resin coating, and described bottom is nanoscale fluor resin coating.
According to the processing technology of a kind of high reverse--bias solar cell notacoria provided by the invention, mainly comprise the following steps:
Mainly comprise the following steps:
(1) plasma etching treatment is carried out in pet sheet face, the degree of depth of etching is 3-5 micron, forms basic unit;
(2) nanoscale fluororesin is added fluorescent material and titanium dioxide filler, make high whiteness whitewash by uniform stirring;
(3) by roller coat, showering, spraying or typography by the inner surface of whitewash uniform deposition in basic unit;
(4) microwave curing or infrared curing or air heat can be passed through after whitewash deposition to solidify, form bottom in base layer interior surface;
(5) by roller coat, showering, spraying or typography by the outer surface of whitewash uniform deposition in basic unit;
(6) multiple sphere or pyramidal structure is formed by the mode of mechanical stamp on surface;
(7) microwave curing or infrared curing or air heat can be passed through after coating deposition to solidify, form reflector in base layer exterior surface.
According to the processing technology of another high reverse--bias solar cell notacoria provided by the invention, mainly comprise the following steps:
(1) plasma etching treatment is carried out in pet sheet face, the degree of depth of etching is 3-5 micron, forms basic unit;
(2) nanoscale fluororesin is added fluorescent material and titanium dioxide filler, make high whiteness whitewash by uniform stirring;
(3) by roller coat, showering, spraying or typography by the inner surface of whitewash uniform deposition in basic unit;
(4) microwave curing or infrared curing or air heat can be passed through after coating deposition to solidify, form bottom in base layer interior surface;
(5) by roller coat, showering, spraying or typography by the outer surface of whitewash uniform deposition in basic unit;
(6) microwave curing or infrared curing or air heat can be passed through after coating deposition to solidify, form reflector in base layer exterior surface;
(7) multiple sphere or pyramidal structure is formed by the mode of gas etching or chemical etching on surface, reflector.
According to a kind of high reverse--bias solar cell notacoria provided by the invention and processing technology compared with prior art tool have the following advantages: the high whiteness sphere that the present invention adopts or pyramid structure, add the area of absolute reflection to increase diffuse reflection, the power improving solar module increases excessive, and then increases the overall energy output of photovoltaic module.And the processing technology adopted is more simple, and rate of finished products is high.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of a kind of embodiment of the present invention.
Fig. 2 is the structural representation of another kind of embodiment of the present invention.
Embodiment
See Fig. 1, in the embodiment of a kind of high reverse--bias solar cell notacoria provided by the invention, comprise basic unit 1, be coated in the reflector 3 of the outer surface of described basic unit 1, and be positioned at the bottom 2 of described basic unit 1 inner surface.The present invention arranges reflector 3 at the outer surface of basic unit 1 thus can will improve the light reflection of notacoria, improves the generating efficiency of solar cell.The outer surface of the present invention here so-called basic unit 1 refers to that one side is then inner surface in addition for solar cell silicon wafer provides the one side of reverberation.
See Fig. 1, in above-described embodiment provided by the invention, gather in described reflector 3 multiple high whiteness spherical structure.The present embodiment forms multiple spherical structure on reflector 3, the reflective surface area in reflector 3 is increased, thus improves reflection ray.
See Fig. 1, in above-described embodiment provided by the invention, described reflector 3 is made by mechanical stamp or gas etching or chemical etching method.The processing effect in the reflector 3 in the present invention is better, conveniently can realize the processing in reflector 3.Described reflector 3 thickness is 50 microns-100 microns.The present embodiment is 60 microns.Above-mentioned size can better meet the needs that reflector 3 is arranged, thus improves reflecting effect.
See Fig. 1, in above-described embodiment provided by the invention, the thickness of described bottom is 10 microns-100 microns.The present embodiment is 50 microns.Described bottom better plays the effect of protection.
See Fig. 1, in above-described embodiment provided by the invention, described basic unit is PET basic unit, and the thickness of described basic unit is 0.2 millimeter-25 millimeters.The present embodiment is 2 millimeters.The needs of notacoria can be better met.
See Fig. 1, in above-described embodiment provided by the invention, described reflector 3 is nanoscale fluor resin coating, and described bottom 2 is nanoscale fluor resin coating.These materials have good performance, can meet the performance requirement of notacoria.
See Fig. 2, in another embodiment provided by the invention, gather in described reflector 3 multiple pyramidal structure.Pyramidal structure also effectively can increase the reflective surface area of light, improves reflection efficiency.
According to the processing technology of a kind of high reverse--bias solar cell notacoria provided by the invention, mainly comprise the following steps:
(1) plasma etching treatment is carried out in pet sheet face, the degree of depth of etching is 3-5 micron, forms basic unit 1;
(2) nanoscale fluororesin is added fluorescent material and titanium dioxide filler, make high whiteness whitewash by uniform stirring;
(3) by roller coat, showering, spraying or typography by the inner surface of whitewash uniform deposition in basic unit 1;
(4) microwave curing or infrared curing or air heat can be passed through after whitewash deposition to solidify, form bottom 2 at basic unit 1 inner surface;
(5) by roller coat, showering, spraying or typography by the outer surface of whitewash uniform deposition in basic unit 1;
(6) multiple sphere or pyramidal structure is formed by the mode of mechanical stamp on surface;
(7) microwave curing or infrared curing or air heat can be passed through after coating deposition to solidify, form reflector 3 in base layer exterior surface.
According to the processing technology of another high reverse--bias solar cell notacoria provided by the invention, mainly comprise the following steps:
(1) plasma etching treatment is carried out in pet sheet face, the degree of depth of etching is 3-5 micron, forms basic unit 1;
(2) nanoscale fluororesin is added fluorescent material and titanium dioxide filler, make high whiteness whitewash by uniform stirring;
(3) by roller coat, showering, spraying or typography by the inner surface of whitewash uniform deposition in basic unit 1;
(4) microwave curing or infrared curing or air heat can be passed through after coating deposition to solidify, form bottom 2 at basic unit 1 inner surface;
(5) by roller coat, showering, spraying or typography by the outer surface of whitewash uniform deposition in basic unit 1;
(6) microwave curing or infrared curing or air heat can be passed through after coating deposition to solidify, form reflector 3 at basic unit 1 outer surface;
(7) multiple sphere or pyramidal structure is formed by the mode of gas etching or chemical etching on surface, reflector.
Above-mentioned two kinds of processing technologys can make the outer surface in reflector 3 form sphere or pyramidal structure, thus increase reflective surface area.Processing technology of the present invention is more simple and convenient, and rate of finished products is high.
For 230W assembly, size of components 1580*990, uses product of the present invention compared with similar products, and every data are as follows:
| Characteristic | Unit | Traditional product | This product |
| Whiteness value | / | 80～90 | 95 |
| Reflective surface area | m 2 | 1.5642 | 1.5945 |
| Power | W | 228 | 230.5 |
By contrasting above and can finding out, the present invention, on indices, is obviously better than traditional product.
Claims (9)
1. a high reverse--bias solar cell notacoria, is characterized in that: comprise basic unit, is coated in the reflector of the outer surface of described basic unit, and is positioned at the bottom of described base layer interior surface.
2. a kind of high reverse--bias solar cell notacoria as claimed in claim 1, is characterized in that: gather in described reflector multiple high whiteness sphere or pyramidal structure.
3. a kind of high reverse--bias solar cell notacoria as claimed in claim 1, is characterized in that: described reflector is made by mechanical stamp or gas etching or chemical etching method.
4. a kind of high reverse--bias solar cell notacoria as claimed in claim 1, is characterized in that: described reflector thickness is 50 microns-100 microns.
5. a kind of high reverse--bias solar cell notacoria as claimed in claim 1, is characterized in that: the thickness of described bottom is 10 microns-100 microns.
6. a kind of high reverse--bias solar cell notacoria as claimed in claim 1, is characterized in that: described basic unit is PET basic unit, and the thickness of described basic unit is 0.2 millimeter-25 millimeters.
7. a kind of high reverse--bias solar cell notacoria as claimed in claim 1, it is characterized in that: described reflector is nanoscale fluor resin coating, described bottom is nanoscale fluor resin coating.
8. a processing technology for high reverse--bias solar cell notacoria, is characterized in that: mainly comprise the following steps:
(1) plasma etching treatment is carried out in pet sheet face, the degree of depth of etching is 3-5 micron, forms basic unit;
(2) nanoscale fluororesin is added fluorescent material and titanium dioxide filler, make high whiteness whitewash by uniform stirring;
(3) by roller coat, showering, spraying or typography by the inner surface of whitewash uniform deposition in basic unit;
(4) microwave curing or infrared curing or air heat can be passed through after whitewash deposition to solidify, form bottom in base layer interior surface;
(5) by roller coat, showering, spraying or typography by the outer surface of whitewash uniform deposition in basic unit;
(6) multiple sphere or pyramidal structure is formed by the mode of mechanical stamp on surface;
(7) microwave curing or infrared curing or air heat can be passed through after coating deposition to solidify, form reflector in base layer exterior surface.
9. a processing technology for high reverse--bias solar cell notacoria, is characterized in that: mainly comprise the following steps:
(1) plasma etching treatment is carried out in pet sheet face, the degree of depth of etching is 3-5 micron, forms basic unit;
(2) nanoscale fluororesin is added fluorescent material and titanium dioxide filler, make high whiteness whitewash by uniform stirring;
(3) by roller coat, showering, spraying or typography by the inner surface of whitewash uniform deposition in basic unit;
(4) microwave curing or infrared curing or air heat can be passed through after coating deposition to solidify, form bottom in base layer interior surface;
(5) by roller coat, showering, spraying or typography by the outer surface of whitewash uniform deposition in basic unit;
(6) microwave curing or infrared curing or air heat can be passed through after coating deposition to solidify, form reflector in base layer exterior surface;
(7) multiple sphere or pyramidal structure is formed by the mode of gas etching or chemical etching on surface, reflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310362928.XA CN104425641A (en) | 2013-08-19 | 2013-08-19 | High-reflection solar-cell back film and processing technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310362928.XA CN104425641A (en) | 2013-08-19 | 2013-08-19 | High-reflection solar-cell back film and processing technology thereof |
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| CN104425641A true CN104425641A (en) | 2015-03-18 |
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| CN201310362928.XA Pending CN104425641A (en) | 2013-08-19 | 2013-08-19 | High-reflection solar-cell back film and processing technology thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449830A (en) * | 2016-12-22 | 2017-02-22 | 苏州高德辰光电科技有限公司 | Reflecting back plate for photovoltaic assembly |
| CN106531830A (en) * | 2016-12-22 | 2017-03-22 | 苏州高德辰光电科技有限公司 | Reflective back plate used for photovoltaic module |
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2013
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449830A (en) * | 2016-12-22 | 2017-02-22 | 苏州高德辰光电科技有限公司 | Reflecting back plate for photovoltaic assembly |
| CN106531830A (en) * | 2016-12-22 | 2017-03-22 | 苏州高德辰光电科技有限公司 | Reflective back plate used for photovoltaic module |
| CN106449830B (en) * | 2016-12-22 | 2018-07-17 | 苏州高德辰光电科技有限公司 | A kind of reflective back plane for photovoltaic module |
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Application publication date: 20150318 |