CN202434543U - Solar cell double-glass assembly - Google Patents
Solar cell double-glass assembly Download PDFInfo
- Publication number
- CN202434543U CN202434543U CN 201120447550 CN201120447550U CN202434543U CN 202434543 U CN202434543 U CN 202434543U CN 201120447550 CN201120447550 CN 201120447550 CN 201120447550 U CN201120447550 U CN 201120447550U CN 202434543 U CN202434543 U CN 202434543U
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- glass
- hot melt
- melt adhesive
- adhesive film
- solar cell
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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
A solar cell double-glass assembly comprises an upper glass layer, a first hot melt adhesive film layer, a solar cell string, a second hot melt adhesive film layer and a lower glass layer, all of which are laminated together in order. The first hot melt adhesive film layer is a high UV transmission hot melt adhesive film, and the second hot melt adhesive film layer is a white hot melt adhesive film with a function of UV obstruction. According to the solar cell double-glass assembly, the right side (the lighting side) of the solar cell string is equipped with the high UV transmission hot melt adhesive film to increase absorption of ultraviolet rays by the cells, and the back side of the solar cell string is equipped with the white hot melt adhesive film with a function of UV obstruction, thereby improving zero-depth reflection and enhancing light intensity projected to the surface of each cell.
Description
Technical field
The utility model belongs to the photovoltaic technology field, relates to a kind of solar module, particularly the two glass assemblies of a kind of solar cell of high ultraviolet utilance.
Background technology
As everyone knows, conventional crystalline silicon solar cell modules adopts hot melt adhesive film, like EVA; The i.e. abbreviation of " EVAc "; Do the sealing adhesives, use macromolecular material, like TPT; Make the protection backboard, draw the both positive and negative polarity of assembly through terminal box, then with around the assembly through silica gel or the bonding aluminum alloy frame of two-sided tape.This is a photovoltaic plant, the basic structure of the assemblies of laying such as building roof.Also have a kind of special BIPV (BIPV) assembly, be generally double glazing and the battery sheet sealed, is bonded as one, be installed on facade or the roof through modes such as latent frame or bright frames through hot melt adhesive film (EVA or PVB).
Influence the performance of assembly for the backboard generation xanthochromia that prevents solar module assembly under outdoor exposure in sunshine, in hot melt adhesive film such as EVA, will add the uvioresistant additive usually, get into assembly to stop ultraviolet ray.But like this, but reduced the light intensity that incides solar battery surface, made the short wave response of solar cell weaken, the power output of assembly descends.Two glass assemblies are owing to all use the hot melt adhesive film with ultraviolet-resistant usually, and the light that is radiated at the battery edge place passes assembly, fails to produce the depth zero reflex, and the power output of assembly is descended.
Present conventional crystalline silicon solar cell modules has been said following defective from structure:
The first, assembly life-span was generally 25 years, and main cause is the restriction that receives back veneer material such as TPT etc.Backboard can wear out under outdoor environment gradually, and the function of backboard protection component internal busbar, battery sheet, hot melt adhesive film was lost efficacy gradually.Second; Have optical energy loss: conventional assembly uses two-layer common hot melt adhesive film; Usually add anti ultraviolet agent among this common EVA, make the ultraviolet ray in the sunlight can not see through hot melt adhesive film, also just can not arrive battery sheet surface and be absorbed and convert electric energy into because of reflection and absorption.If can make battery absorb this part ultraviolet light, then can improve the efficient of assembly.The 3rd, basically by the monopolization of major company of external a few family, cost is high at present for conventional back veneer material.The 4th, common two glass assembly depth zero reflexs a little less than, the notion of depth zero reflection is with reference to like Fig. 1.
Our simplified assembly structural model is set forth the notion of depth zero reflection: as shown in Figure 1; In existing pair of glass assembly, stack gradually together be toughened glass or half tempered glass 6, common hot melt adhesive film (like common EVA) 7, battery strings 8, common hot melt adhesive film (like common EVA) 9, toughened glass or half tempered glass 10; When light is injected assembly, incide on the surface of battery strings 8 and absorb through toughened glass or half tempered glass 6, common hot melt adhesive film 7; But not every light is all absorbed by battery; Part light throwed common hot melt adhesive film 9 through the slit between the battery sheet; Can not be absorbed by the battery sheet behind toughened glass or the half tempered glass 10, this part light is lost, thereby loses certain power.
Summary of the invention
The utility model provides a kind of solar cell two glass assemblies, and purpose is to solve the two glass assembly problems not high to ultraviolet utilance of existing solar cell.
For achieving the above object; The technical scheme that the utility model adopts is: the two glass assemblies of a kind of solar cell; Comprise the upper strata glass, ground floor hot melt adhesive film, solar battery string, second layer hot melt adhesive film and the lower floor's glass that stack gradually together; It is characterized in that: the hot melt adhesive film that said ground floor hot melt adhesive film adopts the ultraviolet height to pass through, said second layer hot melt adhesive film adopts the hot melt adhesive film with ultraviolet-resistant effect.
In a preferred embodiment, said ground floor hot melt adhesive film is for supplying the transparent EVA or the transparent PVB of ultraviolet ray and visible light transmissive; Said second layer hot melt adhesive film is white EVA or white PVB.
In a preferred embodiment, be provided with glass layer between said solar battery string and the said second layer hot melt adhesive film.
In a preferred embodiment, said second layer hot melt adhesive film adopts glass white EVA.
In a preferred embodiment, said upper strata glass is toughened glass or half tempered glass.Preferably, said upper strata glass is the dull and stereotyped toughened glass of super white patterned toughened glass or ultrawhite.
In a preferred embodiment, said lower floor glass is toughened glass or half tempered glass.Preferably, said lower floor glass is ordinary flat toughened glass.
The utility model compared with prior art has advantage and effect:
1, the utility model adopts double-layer glass structure; Glass has extraordinary moisture-proof gas, ageing-resistant, UV resistant, is difficult for aging function; Compare with the backboard of conventional macromolecular material and to have very high weatherability, in the life-span that therefore can improve assembly, estimate 50 year life-span.
2, the utility model adopts the hot melt adhesive film (as supplying ultraviolet ray and all permeable transparent EVA of visible light or transparent PVB) that the ultraviolet height passes through in battery pack front (daylighting face), to increase the battery sheet to ultraviolet absorption.The hot melt adhesive film (like white EVA or white PVB) with ultraviolet-resistant effect is adopted at the back side at the battery sheet, and white hot melt adhesive film has the effect that increases the depth zero reflection, has improved the light intensity that projects assembly battery sheet surface.Simultaneously, white hot melt adhesive film also has the good characteristics of conduction of heat, can reduce the NOCT (Nominal operating cell temperature, battery nominal operation temperature) of assembly.Therefore improved the power output of assembly.
3, the back veneer material of routine, like TPT, basically by the monopolization of major company of external a few family, cost is high at present.After adopting the structure of this patent, need not receive the restriction of back veneer material.This patent assembly adopts conventional ordinary plate glass as backboard, and the home and abroad ample supply of commodities on the market can reduce cost greatly.Simultaneously, the structure of this patent need not the silica gel or the adhesive tape of aluminium section bar frame and bonding aluminium frame, can further reduce cost.Integrate than the packaging cost of existing conventional crystalline silicon solar cell modules and reduced by 1/3 to 1/4.
In addition, in some preferred embodiments of the utility model, be provided with glass layer between said solar battery string and the said second layer hot melt adhesive film, or said second layer hot melt adhesive film directly adopts glass white EVA.
The effect of glass layer or glass is among the above embodiment: 1, improve the displacement of battery sheet: fiberglass surfacing is a coarse structure; Good frictional force is provided, in hot melt adhesive film molten condition following time, if do not have glass layer or glass; The battery sheet is shifted easily, even and sheet.The coarse structure reduction of glass layer or glass has been arranged or stopped displacement and the also generation of sheet.2, improved rate of finished products: the application in assembly of glass layer or glass helps assembly and vacuumizes, and removes bubble, and the assembly rate of finished products is risen.3, produce the good surface appearance effect: owing to use the double-layer glass structure of white EVA; White EVA might overflow to battery sheet front surface when becoming molten state being heated; Can reduce the reliability and the presentation quality of assembly like this; Utilize its loose network structure that white EVA is come with completely cutting off between battery sheet, the transparent EVA after having added glass layer or glass, form the good surface appearance effect.
Description of drawings
Accompanying drawing 1 is the two glass assembly sketch mapes of prior art solar cell.
Accompanying drawing 2 is the two glass assembly first embodiment sketch mapes of the utility model solar cell.
Accompanying drawing 3 is the two glass assembly second embodiment sketch mapes of the utility model solar cell.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
As shown in Figure 2; The two glass assemblies of a kind of solar cell; Comprise the upper strata glass 1, ground floor hot melt adhesive film 2, solar battery string 3, second layer hot melt adhesive film 4 and the lower floor's glass 5 that stack gradually together; The hot melt adhesive film that said ground floor hot melt adhesive film 2 adopts the ultraviolet height to pass through, said second layer hot melt adhesive film 4 adopts the hot melt adhesive film with ultraviolet-resistant effect.
Wherein, said upper strata glass 1 can be toughened glass or half tempered glass; Said lower floor glass 5 can be toughened glass or half tempered glass.
In a preferred embodiment, said ground floor hot melt adhesive film 2 is for supplying the transparent EVA or the transparent PVB of ultraviolet ray and visible light transmissive, and said second layer hot melt adhesive film 4 is white EVA or white PVB.Wherein, EVA is the abbreviation of " EVAc "; PVB is the abbreviation of " polyvinyl butyral resin ".
In a preferred embodiment, said upper strata glass 1 is the super white patterned toughened glass or the dull and stereotyped toughened glass of ultrawhite of high transmission rate; Said lower floor glass 5 is ordinary flat toughened glass.
As shown in Figure 2, when light along the upper strata glass 1, after ground floor hot melt adhesive film 2 is injected solar battery string 3; The gap loss that part light still sees through between the battery sheet is fallen, but because the utility model second layer hot melt adhesive film 4 has adopted the hot melt adhesive film with ultraviolet-resistant effect, like white EVA or white PVB; Basically visible light comprises that ultraviolet light is also intercepted; Such second layer hot melt adhesive film 4 just has strong reflex for light, and this a part of light is gone back through various angle diffuse reflections, and this light that is reflected is through the ground floor hot melt adhesive film 2 of the hot melt adhesive film that adopts the ultraviolet height to pass through; After arriving upper strata glass 1; Because the toughened glass that upper strata glass 1 adopts or the special pattern structure of half tempered glass surface can be with this light secondary reflections again, thereby make a part of light return directive battery sheet, and the battery sheet can be absorbed the light secondary that reflects; Improve the intensity of illumination on battery sheet surface, improved the power output of assembly.This process is exactly the depth zero reflection process.So the reflection of the depth zero of white EVA glued membrane helps the power output of lifting subassembly.
The two glass assembly main features of the utility model solar cell are:
1, adopts the hot melt adhesive film of high transmission rate at battery sheet positive (daylighting face), as supply the transparent EVA or the transparent PVB of ultraviolet ray and visible light transmissive, increase the battery sheet ultraviolet absorption; Adopt the white hot melt adhesive film of ultraviolet high resistant at the back side of battery sheet, like white EVA or PVB, white hot melt adhesive film has the effect that increases the depth zero reflection, has improved the light intensity that projects assembly battery sheet surface.Simultaneously, white hot melt adhesive film also has the good characteristics of conduction of heat, can reduce the NOCT of assembly, has therefore improved the power output of assembly;
2, the utility model assembly can reduce the component package cost, mainly is that the backboard at the back side adopts common toughened glass, and the more conventional backboard of price is compared and had substantial degradation, and the home and abroad ample supply of commodities on the market;
3, simultaneously, two glass modular constructions of the utility model need not the silica gel and the adhesive tape of aluminium section bar frame and bonding aluminium frame, integrate than the packaging cost of existing conventional crystalline silicon solar cell modules to have reduced by 1/3 to 1/4.
As shown in Figure 3, the two glass assemblies of a kind of solar cell, structure from top to bottom is toughened glass or half tempered glass 1; The high seep through film 2 of ultraviolet, the transparent EVA or the transparent PVB that pass through like the ultraviolet height; Solar battery string 3; Glass fiber 11; The white hot melt adhesive film 4 of tool ultraviolet high resistant is like ultraviolet high resistant white EVA; Toughened glass or half tempered glass 5 promptly are provided with glass layer 11 between said solar battery string 3 and said ultraviolet high resistant white hot melt adhesive film 4.Overall structure becomes an integral body through component lamination technology lamination.
The technical pattern of the two glass assemblies of the utility model solar cell:
The super white patterned toughened glass of employing high transmission rate or half tempered glass are as apron plate; With ordinary flat toughened glass or half tempered glass as backboard; Thickness of glass can be selected according to the requirements such as area, weight and load of assembly; 2mm-5mm in addition thicker all can, general before and after the thickness of the glass unanimity of should trying one's best.Battery sheet daylighting face is with the hot melt adhesive film of high transmission rate, like transparent EVA or transparent PVB; Cell back face employing glass fiber adds the composite hot melt adhesive membrane material of high-barrier ultraviolet light, like white EVA.
Wherein, In another embodiment; Two independent stratums like " ultraviolet high resistant white hot melt adhesive film 4 and glass layer 11 " among Fig. 3 are substitutable for one deck " glass white EVA "; This material has the characteristics of ultraviolet high resistant equally, has simplified the structure of assembly simultaneously, reduces and technology manufacturing process has very big benefit for the cost of assembly.
The effect of glass fiber among the utility model embodiment: 1, improve battery sheet displacement: fiberglass surfacing is a coarse structure, and good frictional force is provided, and in hot melt adhesive film molten condition following time, if there is not glass, the battery sheet is shifted easily, even and sheet.The coarse structure reduction of glass has been arranged or stopped displacement and the also generation of sheet.2, improved rate of finished products: the application of glass in assembly helps assembly and vacuumizes, and removes bubble, and the assembly rate of finished products is risen.3, produce the good surface appearance effect: owing to use the double-layer glass structure of white EVA; White EVA might overflow to battery sheet front surface when becoming molten state being heated; Can reduce the reliability and the presentation quality of assembly like this; Add the loose network structure that utilizes it behind the glass white EVA has been come with completely cutting off between battery sheet, the transparent EVA, formed the good surface appearance effect.
The foregoing description only is the technical conceive and the characteristics of explanation the utility model, and its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection range of the utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection range of the utility model.
Claims (8)
1. two glass assemblies of a solar cell; Comprise the upper strata glass, ground floor hot melt adhesive film, solar battery string, second layer hot melt adhesive film and the lower floor's glass that stack gradually together; It is characterized in that: the hot melt adhesive film that said ground floor hot melt adhesive film adopts the ultraviolet height to pass through, said second layer hot melt adhesive film adopts the hot melt adhesive film with ultraviolet-resistant effect.
2. the two glass assemblies of solar cell according to claim 1 is characterized in that: said ground floor hot melt adhesive film is for supplying the transparent EVA or the transparent PVB of ultraviolet ray and visible light transmissive; Said second layer hot melt adhesive film is white EVA or white PVB.
3. the two glass assemblies of solar cell according to claim 1 is characterized in that: be provided with glass layer between said solar battery string and the said second layer hot melt adhesive film.
4. the two glass assemblies of solar cell according to claim 1 is characterized in that: said second layer hot melt adhesive film adopts glass white EVA.
5. the two glass assemblies of solar cell according to claim 1, it is characterized in that: said upper strata glass is toughened glass or half tempered glass.
6. the two glass assemblies of solar cell according to claim 5 is characterized in that: said upper strata glass is the dull and stereotyped toughened glass of super white patterned toughened glass or ultrawhite.
7. the two glass assemblies of solar cell according to claim 1, it is characterized in that: said lower floor glass is toughened glass or half tempered glass.
8. the two glass assemblies of solar cell according to claim 7, it is characterized in that: said lower floor glass is ordinary flat toughened glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120447550 CN202434543U (en) | 2011-11-11 | 2011-11-11 | Solar cell double-glass assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120447550 CN202434543U (en) | 2011-11-11 | 2011-11-11 | Solar cell double-glass assembly |
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| CN202434543U true CN202434543U (en) | 2012-09-12 |
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| CN 201120447550 Expired - Fee Related CN202434543U (en) | 2011-11-11 | 2011-11-11 | Solar cell double-glass assembly |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842653A (en) * | 2012-09-26 | 2012-12-26 | 上饶光电高科技有限公司 | Solar cell component and manufacturing method of solar cell component |
| CN104157710A (en) * | 2014-07-31 | 2014-11-19 | 江西瑞晶太阳能科技有限公司 | Efficient PID-resistant photovoltaic component |
| CN104157711A (en) * | 2014-07-31 | 2014-11-19 | 江西瑞晶太阳能科技有限公司 | Efficient anti-PID double-glass photovoltaic modules |
| CN105810768A (en) * | 2016-04-14 | 2016-07-27 | 珠海格力电器股份有限公司 | Double-glass assembly |
| CN106711256A (en) * | 2015-07-27 | 2017-05-24 | 东莞南玻光伏科技有限公司 | Double-glass solar photovoltaic module and preparation method thereof |
| CN107681015A (en) * | 2017-11-07 | 2018-02-09 | 苏州中来光伏新材股份有限公司 | The preparation method of PVB glued membranes and the solar double-glass assemblies encapsulated with the PVB glued membranes |
| CN108335991A (en) * | 2018-04-02 | 2018-07-27 | 格润智能光伏南通有限公司 | A kind of pressure-resistant automatic testing equipment of solar double-glass assemblies insulation |
| US10069019B2 (en) | 2014-10-31 | 2018-09-04 | Byd Company Limited | Solar cell unit, solar cell array, solar cell module and manufacturing method thereof |
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2011
- 2011-11-11 CN CN 201120447550 patent/CN202434543U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842653A (en) * | 2012-09-26 | 2012-12-26 | 上饶光电高科技有限公司 | Solar cell component and manufacturing method of solar cell component |
| CN102842653B (en) * | 2012-09-26 | 2016-04-13 | 上饶光电高科技有限公司 | A kind of solar module and preparation method thereof |
| CN104157710A (en) * | 2014-07-31 | 2014-11-19 | 江西瑞晶太阳能科技有限公司 | Efficient PID-resistant photovoltaic component |
| CN104157711A (en) * | 2014-07-31 | 2014-11-19 | 江西瑞晶太阳能科技有限公司 | Efficient anti-PID double-glass photovoltaic modules |
| US10193003B2 (en) | 2014-10-31 | 2019-01-29 | Byd Company Limited | Solar cell unit, solar cell array, solar cell module and manufacturing method thereof |
| US10069019B2 (en) | 2014-10-31 | 2018-09-04 | Byd Company Limited | Solar cell unit, solar cell array, solar cell module and manufacturing method thereof |
| US10381493B2 (en) | 2014-10-31 | 2019-08-13 | Byd Company Limited | Solar cell unit, solar cell array, solar cell module and manufacturing method thereof |
| US10529868B2 (en) | 2014-10-31 | 2020-01-07 | Byd Company Limited | Solar cell array, solar cell module and manufacturing method thereof |
| CN106711256A (en) * | 2015-07-27 | 2017-05-24 | 东莞南玻光伏科技有限公司 | Double-glass solar photovoltaic module and preparation method thereof |
| CN105810768A (en) * | 2016-04-14 | 2016-07-27 | 珠海格力电器股份有限公司 | Double-glass assembly |
| US11258402B2 (en) | 2016-04-14 | 2022-02-22 | Gree Electric Appliances, Inc. Of Zhuhai | Double glass module |
| CN107681015A (en) * | 2017-11-07 | 2018-02-09 | 苏州中来光伏新材股份有限公司 | The preparation method of PVB glued membranes and the solar double-glass assemblies encapsulated with the PVB glued membranes |
| CN107681015B (en) * | 2017-11-07 | 2024-04-16 | 苏州中来光伏新材股份有限公司 | Preparation method of PVB (polyvinyl butyral) adhesive film and double-glass assembly packaged by PVB adhesive film |
| CN108335991A (en) * | 2018-04-02 | 2018-07-27 | 格润智能光伏南通有限公司 | A kind of pressure-resistant automatic testing equipment of solar double-glass assemblies insulation |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20201111 |
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| CF01 | Termination of patent right due to non-payment of annual fee |