CN205050854U - Silver color solar cell back sheet and subassembly thereof - Google Patents
Silver color solar cell back sheet and subassembly thereof Download PDFInfo
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- CN205050854U CN205050854U CN201520839265.0U CN201520839265U CN205050854U CN 205050854 U CN205050854 U CN 205050854U CN 201520839265 U CN201520839265 U CN 201520839265U CN 205050854 U CN205050854 U CN 205050854U
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- silver color
- solar cell
- high reflection
- reflection layer
- backboard
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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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Abstract
The utility model relates to a solar cell field, in particular to silver color solar cell back sheet and subassembly thereof. The utility model discloses a silver color solar cell back sheet, including multilayer structure, multilayer structure includes the high reflection stratum of silver color. The beneficial effects are that: the utility model provides a silver color solar cell back sheet structural design is simple, has good reflectivity and thermal diffusivity, has reduced photovoltaic module's ages at a rate, has further improved solar energy photovoltaic module's generating efficiency and life, specially adapted photovoltaic power generation.
Description
Technical field
The utility model relates to area of solar cell, particularly a kind of silver color solar cell backboard and assembly thereof.
Background technology
Solar cell is the device directly light energy conversion being become electric energy by photoelectric effect, has permanent, spatter property and the large advantage of flexibility three.Nowadays, solar cell by a large amount of uses in each technical field.
Solar module mainly comprises backboard, solar cell, packaging adhesive film and header board.Normally a kind of multilayer materials of backboard, must have the performance such as high insulation, ageing-resistant, uvioresistant, water vapor rejection and dimensional stability, enough mechanical strengths preferably.The effect of backboard is used to the mechanical strength improving solar cell, and protection crystal silicon chip, prevents the useful life affecting cell piece in water vapor permeable to sealant.Operating time due to solar cell will reach 25 years; therefore; backboard must will possess the destruction that any extraneous factors such as opposing sunlight, rainwater, wind, impact and humiture change are brought in for a long time, and protects the silicon chip in cell piece.
As everyone knows, consider the power output that one of most important performance parameter of photovoltaic module is photovoltaic module, research at present for solar module has been tending towards ripe, the space of improving solar module power has been difficult to break through again, applicant finds through large quantity research and summing up, and the solar cell backboard of reflectivity excellence and the good power output of solar cell backboard to photovoltaic module of thermal diffusivity play material impact.The bad solar cell backboard of reflectivity can absorb sunlight, the temperature of solar module can be caused like this to raise, finally make solar cell temperature raise.Have document announcement, the working temperature of crystal silicon solar energy battery often raises 1 DEG C, then the transformation efficiency of battery will reduce by 0.4% ~ 0.5%.Therefore, strengthening heat radiation and improve reflecting properties, reducing solar cell working temperature, is one of approach improving solar cell working efficiency.And the white solar cell backboard of extensive use at present and black solar cell backboard do not have the feature having reflectivity and thermal diffusivity concurrently.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides the silver color solar cell backboard that a kind of reflectivity is high, thermal diffusivity is good.Another object of the present utility model is to provide the solar module containing this backboard.Silver color solar cell backboard structural design provided by the utility model is simple, has good reflectivity and thermal diffusivity, reduces the aging speed of photovoltaic module, further increase generating efficiency and the useful life of solar photovoltaic assembly.
A kind of silver color solar cell backboard that the utility model provides, its technical scheme is:
A kind of silver color solar cell backboard, comprise sandwich construction, sandwich construction comprises silver color high reflection layer.
Preferably, silver color high reflection layer is arranged on the outermost layer of sandwich construction.
Preferably, any one during silver color high reflection layer comprises containing high reverse--bias additive polyethylene, polypropylene, polyolefin or polyurethane resin.
Preferably, high reverse--bias additive comprises the one in zinc oxide, aluminium hydroxide, zirconia, titanium dioxide, tin indium oxide, indium oxide silver or fluorescent whitening agent.
Preferably, silver color high reflection layer is rete or coating; The thickness of silver color high reflection layer is 5-500 micron.
Preferably, backboard comprises three-decker, is followed successively by silver color high reflection layer, basic unit, silver color high reflection layer; Or be followed successively by silver color high reflection layer, basic unit, fluorine-containing weathering layer.
Preferably, backboard comprises four-layer structure, is followed successively by silver color high reflection layer, tack coat, basic unit, silver color high reflection layer; Or be followed successively by fluorine-containing weathering layer, tack coat, basic unit, silver color high reflection layer.
Preferably, backboard comprises five-layer structure, is followed successively by silver color high reflection layer, tack coat, basic unit, tack coat, silver color high reflection layer; Or be followed successively by silver color high reflection layer, tack coat, basic unit, tack coat, fluorine-containing weathering layer.
Preferably, basic unit comprises the one in PETG, polybutylene terephthalate (PBT), PEN, polyimide resin, Merlon or polyphenylene oxide resin; Tack coat comprises the one in polyvinyl butyral film or ethylene-vinyl acetate copolymer; Fluorine-containing weathering layer comprises the one in modification tetrafluoroethylene resin or modification trifluorochlorethylene resin.
The utility model additionally provides a kind of photovoltaic solar cell assembly, and its technical scheme is:
A kind of photovoltaic solar cell assembly, comprise front layer material, encapsulating material, cell piece, solar cell backboard, solar cell backboard is above-mentioned arbitrary a kind of silver color solar cell backboard.
Enforcement of the present utility model comprises following technique effect:
The silver color solar cell backboard structural design that the utility model provides is simple, there is good reflectivity and thermal diffusivity, reducing the aging speed of photovoltaic module, further increase generating efficiency and the useful life of solar photovoltaic assembly, is a kind of solar cell backboard of good performance.Be specially adapted to field of photovoltaic power generation.
Accompanying drawing explanation
Fig. 1 is the silver color solar cell backboard of a kind of three-decker (two-layer silver color layer) of the utility model embodiment
Fig. 2 is the silver color solar cell backboard of a kind of three-decker (one deck silver color layer) of the utility model embodiment
Fig. 3 is the silver color solar cell backboard of a kind of four-layer structure of the utility model embodiment
Fig. 4 is the silver color solar cell backboard of a kind of five-layer structure of the utility model embodiment
1, basic unit; 2, silver color high reflection layer; 3, adhesive linkage; 4, fluorine-containing weathering layer.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in detail, it is pointed out that described embodiment is only intended to be convenient to understanding of the present utility model, and any restriction effect is not play to it.
See Fig. 1 to Fig. 4, a kind of silver color solar cell backboard that the present embodiment provides, comprise sandwich construction, sandwich construction comprises silver color high reflection layer.As preferably, silver color high reflection layer is arranged on the outermost layer of sandwich construction.In the present embodiment, silver color high reflection layer comprises a kind of or several mixture in polyethylene, polypropylene, polyolefin or the polyurethane resin containing high reverse--bias additive.High reverse--bias additive comprises the one in zinc oxide, aluminium hydroxide, zirconia, titanium dioxide, tin indium oxide, indium oxide silver or fluorescent whitening agent or appoints several.Concrete, the weight of high reverse--bias additive is the 0.5%-50% of silver color high reflection layer weight.According to the structure of solar cell backboard, silver color high reflection layer can be rete or coating; The thickness of silver color high reflection layer is 5-500 micron, and be preferably 20-300 micron, more preferably 50-200 micron, concrete numerical value can be selected, 5 microns, 20 microns, 50 microns, 100 microns, 200 microns, 300 microns, 500 microns.The solar cell backboard containing silver color high reflection layer that the present embodiment provides, structural design is simple, there is good reflectivity and thermal diffusivity, reduce the aging speed of photovoltaic module, further increasing generating efficiency and the useful life of solar photovoltaic assembly, is a kind of solar cell backboard of good performance.Be specially adapted to field of photovoltaic power generation.
Concrete, the solar cell backboard containing silver color high reflection layer that the present embodiment provides can be three-decker, four-layer structure or five-layer structure.
Embodiment 1
Shown in Figure 1, backboard comprises three-decker, be followed successively by silver color high reflection layer 2, basic unit 1, silver color high reflection layer 2, basic unit is one or several the compound in PETG, polybutylene terephthalate (PBT), PEN, polyimide resin, Merlon or polyphenylene oxide resin.Basic unit 1 thickness is 100-1000 micron.PETG is selected by the present embodiment basic unit 1.Silver color high reflection layer is the polyethylene containing zinc oxide, aluminium hydroxide, zirconia and titanium dioxide.The reflectivity measuring backboard is 92%, and thermal diffusivity is better than existing backboard.
Embodiment 2
Shown in Figure 2, backboard comprises three-decker, and be followed successively by silver color high reflection layer 2, basic unit 1, fluorine-containing weathering layer 4, basic unit is PETG.Fluorine-containing weathering layer is one or several compounds of the high molecular polymers such as modification tetrafluoroethylene resin, modification trifluorochlorethylene resin or other fluorine modified resins, and its structure is large molecule high-crosslinking-degree network structure, and its thickness is 1-30 micron.Silver color high reflection layer is the polypropylene containing tin indium oxide, indium oxide silver and fluorescent whitening agent.The fluorine-containing weathering layer of the present embodiment selects modification trifluorochlorethylene resin.The reflectivity measuring backboard is 91%, and thermal diffusivity is better than existing backboard.
Embodiment 3
Shown in Figure 3, backboard comprises four-layer structure, is followed successively by silver color high reflection layer 2, tack coat 3, basic unit 1, silver color high reflection layer 2.Basic unit is polybutylene terephthalate (PBT), and tack coat is the one in high performance polyvinyl butyral resin (PVB) film or ethylene-vinyl acetate copolymer (EVA).The present embodiment tack coat selects high performance polyvinyl butyral resin (PVB) film.Silver color high reflection layer is the polyolefin containing zinc oxide, aluminium hydroxide, zirconia, titanium dioxide, tin indium oxide, indium oxide silver and fluorescent whitening agent.The reflectivity measuring backboard is 92.5%, and thermal diffusivity is better than existing backboard.
Embodiment 4
Shown in Figure 4, backboard comprises five-layer structure, is followed successively by silver color high reflection layer 2, tack coat 3, basic unit 1, tack coat 3, silver color high reflection layer 2.Basic unit is PEN, and tack coat is ethylene-vinyl acetate copolymer (EVA).Silver color high reflection layer is the polyurethane resin containing zirconia, titanium dioxide and fluorescent whitening agent.The reflectivity measuring backboard is 92%, and thermal diffusivity is better than existing backboard.
The present embodiment additionally provides a kind of photovoltaic solar cell assembly, comprises front layer material, encapsulating material, cell piece, encapsulating material, the solar cell backboard of lamination successively, and solar cell backboard is above-mentioned a kind of silver color solar cell backboard respectively.The structure and working principle of solar module is technology well known in the art, and the improvement of solar module that the utility model provides only relates to above-mentioned solar cell backboard, does not change other parts.Therefore this specification only describes in detail solar cell backboard, the miscellaneous part of solar module and operation principle are repeated no more here.In the content basis that those skilled in the art describe at this specification, solar module of the present utility model can be realized.
The assembly that the solar cell backboard lamination that the assembly adopting the conventional solar cell backboard lamination that market is buied to obtain and 4 embodiments of the present utility model obtain obtains is tested, and performance parameter contrast is as shown in the table:
| Common component | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Backboard reflectivity | 80％ | 92％ | 91％ | 92.5％ | 92％ |
| Thermal diffusivity | Difference | Well | Well | Well | Well |
| Aging speed | Hurry up | Slowly | Slowly | Slowly | Slowly |
| Power increases excessive | 0.5％ | 2～3.8％ | 2.1～3.5％ | 2～4％ | 2～3.7％ |
| Assembly life-span | Short | Long | Long | Long | Long |
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not the restriction to the utility model protection range; although done to explain to the utility model with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical solution of the utility model or equivalent replacement, and not depart from essence and the scope of technical solutions of the utility model.
Claims (10)
1. a silver color solar cell backboard, comprises sandwich construction, it is characterized in that: described sandwich construction comprises silver color high reflection layer.
2. a kind of silver color solar cell backboard according to claim 1, is characterized in that: described silver color high reflection layer is arranged on the outermost layer of described sandwich construction.
3. a kind of silver color solar cell backboard according to claim 1, is characterized in that: described silver color high reflection layer comprises the one in polyethylene, polypropylene, polyolefin or the polyurethane resin containing high reverse--bias additive.
4. a kind of silver color solar cell backboard according to claim 3, is characterized in that: described high reverse--bias additive comprises the one in zinc oxide, aluminium hydroxide, zirconia, titanium dioxide, tin indium oxide, indium oxide silver or fluorescent whitening agent.
5. a kind of silver color solar cell backboard according to claim 1, is characterized in that: described silver color high reflection layer is rete or coating; The thickness of described silver color high reflection layer is 5-500 micron.
6., according to the arbitrary described a kind of silver color solar cell backboard of Claims 1 to 5, it is characterized in that: described backboard comprises three-decker, be followed successively by silver color high reflection layer, basic unit, silver color high reflection layer; Or be followed successively by silver color high reflection layer, basic unit, fluorine-containing weathering layer.
7., according to the arbitrary described a kind of silver color solar cell backboard of Claims 1 to 5, it is characterized in that: described backboard comprises four-layer structure, be followed successively by silver color high reflection layer, tack coat, basic unit, silver color high reflection layer; Or be followed successively by fluorine-containing weathering layer, tack coat, basic unit, silver color high reflection layer.
8., according to the arbitrary described a kind of silver color solar cell backboard of Claims 1 to 5, it is characterized in that: described backboard comprises five-layer structure, be followed successively by silver color high reflection layer, tack coat, basic unit, tack coat, silver color high reflection layer; Or be followed successively by silver color high reflection layer, tack coat, basic unit, tack coat, fluorine-containing weathering layer.
9. a kind of silver color solar cell backboard according to claim 8, is characterized in that: described basic unit comprises the one in PETG, polybutylene terephthalate (PBT), PEN, polyimide resin, Merlon or polyphenylene oxide resin; Described tack coat comprises the one in polyvinyl butyral film or ethylene-vinyl acetate copolymer; Described fluorine-containing weathering layer comprises the one in modification tetrafluoroethylene resin or modification trifluorochlorethylene resin.
10. a photovoltaic solar cell assembly, comprises front layer material, encapsulating material, cell piece, solar cell backboard, it is characterized in that: described solar cell backboard is the arbitrary described a kind of silver color solar cell backboard of claim 1 ~ 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520839265.0U CN205050854U (en) | 2015-10-27 | 2015-10-27 | Silver color solar cell back sheet and subassembly thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520839265.0U CN205050854U (en) | 2015-10-27 | 2015-10-27 | Silver color solar cell back sheet and subassembly thereof |
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| CN205050854U true CN205050854U (en) | 2016-02-24 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106024947A (en) * | 2016-07-25 | 2016-10-12 | 无锡中洁能源技术有限公司 | Solar backboard structure with high conversion efficiency |
| CN106057948A (en) * | 2016-07-29 | 2016-10-26 | 无锡中洁能源技术有限公司 | Production process of multilayer solar energy backboard |
| CN106206801A (en) * | 2016-08-11 | 2016-12-07 | 绍兴文理学院 | A kind of high-performance solar backboard |
| CN106206788A (en) * | 2016-07-29 | 2016-12-07 | 无锡中洁能源技术有限公司 | Multiple field solar energy backboard |
| CN106206851A (en) * | 2016-08-27 | 2016-12-07 | 无锡中洁能源技术有限公司 | A kind of production technology of application type solar energy backboard |
| KR101716871B1 (en) * | 2016-04-27 | 2017-03-28 | 주식회사 에스에프씨 | Back-protective sheet for solar cell module |
-
2015
- 2015-10-27 CN CN201520839265.0U patent/CN205050854U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101716871B1 (en) * | 2016-04-27 | 2017-03-28 | 주식회사 에스에프씨 | Back-protective sheet for solar cell module |
| CN106024947A (en) * | 2016-07-25 | 2016-10-12 | 无锡中洁能源技术有限公司 | Solar backboard structure with high conversion efficiency |
| CN106057948A (en) * | 2016-07-29 | 2016-10-26 | 无锡中洁能源技术有限公司 | Production process of multilayer solar energy backboard |
| CN106206788A (en) * | 2016-07-29 | 2016-12-07 | 无锡中洁能源技术有限公司 | Multiple field solar energy backboard |
| CN106206801A (en) * | 2016-08-11 | 2016-12-07 | 绍兴文理学院 | A kind of high-performance solar backboard |
| CN106206801B (en) * | 2016-08-11 | 2017-11-21 | 绍兴文理学院 | A kind of high-performance solar backboard |
| CN106206851A (en) * | 2016-08-27 | 2016-12-07 | 无锡中洁能源技术有限公司 | A kind of production technology of application type solar energy backboard |
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