CN205211772U - High resistant photovoltaic module that waits - Google Patents
High resistant photovoltaic module that waits Download PDFInfo
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- CN205211772U CN205211772U CN201521057293.3U CN201521057293U CN205211772U CN 205211772 U CN205211772 U CN 205211772U CN 201521057293 U CN201521057293 U CN 201521057293U CN 205211772 U CN205211772 U CN 205211772U
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- layer
- photovoltaic module
- aluminium foil
- backboard
- high durable
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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 high resistant photovoltaic module that waits, the toughened glass that sets up including top -down, go up EVA layer, solar wafer, EVA layer and backplate down, above -mentioned each layer material forms a whole after the high temperature lamination. Backplate top -down include PET layer, an adhesive layer, aluminium foil layer, the 2nd adhesive layer and the resistant layer of waiting. Aluminium foil layer upper surface high reflectivity has to carry out the texturing processing, formed regular spread's slot, increased the reutilization rate to the sunlight. The utility model discloses an improvement of backplate for the subassembly has better weather resistance and prevents the ability of steam infiltration, has ensured the reliability of subassembly, has also improved the output and the conversion efficiency of subassembly simultaneously indirectly.
Description
Technical field
The utility model relates to technical field of solar, particularly a kind of photovoltaic module with high-weatherability.
Background technology
Along with the continuous progress of society and the intensification day by day of environmental hazard, solar energy is clean as one, free of contamination renewable new forms of energy receive increasing concern, the especially application of solar power generation.Solar power generation has lot of advantages, and as safe and reliable, safeguard simple, the construction period is short, long service life.
The core component of solar power generation is photovoltaic module, and photovoltaic module is normally made up of the backboard of preposition toughened glass, solar cell layer, encapsulating material EVA, rearmounted protection and frame.Backboard is positioned at the below of solar battery sheet, at the outermost layer of assembly, is the important component part of assembly, not only plays the effect of encapsulation, also plays simultaneously and ensures that solar battery sheet is not subject to the effect of environmental impact, guarantee the useful life of assembly.The nucleus of backboard is that PETG (PET), PET are combined with fluorine-containing polymer compound to stop and are hydrolyzed and ultraviolet, the anti-oxidation of blocking oxygen, has good insulating properties, high-low temperature resistant, ageing-resistant and corrosion resistant performance.So backboard is the first line of defence of assembly, do not play very important effect by the impact of outdoor environment at protection photovoltaic module.
The backboard being applied to photovoltaic module is at present generally the structure of TPT and TPE, and wherein the backboard of TPT structure contains two-layer pvf film (PVF), and the backboard of TPE structure is only containing individual layer pvf film.PVF membrane structure is stable, resistance to environmental change, but film surface more easily occurs pin hole, and the water vapor rejection ability of film is poor.When the steam in air enters into component internal through backboard, the adhesive property of EVA can be had influence on, cause backboard and EVA to depart from, and then make the direct contact solar cell sheet of more steam and make it be oxidized.In addition, when hidden splitting occurs solar battery sheet, the infiltration of steam also can cause the hidden place of splitting on solar battery sheet surface to occur lightning line indirectly.Therefore, the water vapor transmittance of backboard is reduced as far as possible to guaranteeing that the weatherability of assembly is most important.
Utility model content
For above problem, the utility model provides a kind of photovoltaic module with high-weatherability, this assembly, by the optimization of material structure, has splendid ageing-resistant performance and extremely low water vapor permeable rate, realizes better secondary simultaneously utilize the solar energy be irradiated on backboard.
The utility model is achieved like this, a kind of high durable photovoltaic module, and comprise the toughened glass arranged, upper EVA layer, solar battery sheet, lower EVA layer and backboard from top to bottom, above-mentioned layers of material forms an entirety after high temperature lamination.Described backboard comprises pet layer, the first adhesive layer, aluminium foil layer, the second adhesive layer and weathering layer from top to bottom, and layers of material is combined as a whole by adhesive.
Described pet layer is transparent PETG.
Described weathering layer is PVF(polyvinyl fluoride), PVDF(Kynoar), ETFE(ethylene-tetrafluoroethylene copolymer) or ECTFE(ethylene-chlorotrifluoro-ethylene copolymer).
Aluminium foil layer upper surface in described backboard has high reflectance, and its reflectivity is higher than 95%.
Described aluminium foil layer upper surface has carried out texturing process, surface has regularly arranged V-groove, the interior angle of V-groove is between 120 degree to 135 degree, and when can ensure that the light arrival toughened glass of V-type groove two face reflections is surperficial like this, its incidence angle is greater than critical angle generation total reflection to be absorbed by solar battery sheet.
The regularly arranged groove of described aluminium foil upper surface can also be the structure of semicircle, half elliptic or arc.
The beneficial effects of the utility model are: (1) improves assembly water vapor rejection performance; (2) light be irradiated on backboard can almost all reflect back by high reflectance aluminium foil, adds assembly and utilizes the secondary of part sunlight, reduce the thermal effect of sunlight; (3) texture structure of aluminium foil surface can the reflection direction of light regulating, increases assembly to the secondary utilance of sunlight.After this kind improves, assembly has the ability of better weatherability and resistance to water vapor permeable, ensure that the reliability of assembly; The conversion efficiency of assembly is also improved indirectly simultaneously.
Accompanying drawing explanation
Fig. 1: a kind of structural representation of high durable photovoltaic module.
Fig. 2: the structural representation of backboard.
Wherein, 1 is toughened glass, and 2 is upper EVA layer, and 3 is solar battery sheet, and 4 is lower EVA layer, and 5 is backboard, and 6 is pet layer, and 7 is the first adhesive layer, and 8 is aluminium foil layer, and 9 is the second adhesive layer, and 10 is weathering layer.
Embodiment
For understanding technical characteristic of the present utility model and content further, be described below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of high durable photovoltaic module, comprise the toughened glass 1 arranged, upper EVA layer 2, solar battery sheet 3, lower EVA layer 4 and backboard 5 from top to bottom, above-mentioned layers of material is stacked arrangement in order, after high temperature lamination, form an entirety.As shown in Figure 2, backboard 5 comprises pet layer 6, first adhesive layer 7, aluminium foil layer 8, second adhesive layer 9 and weathering layer 10, and layers of material is arranged from top to bottom, by adhesive in conjunction with as a whole.
In the present embodiment, pet layer is transparent PETG, and the sunlight in solar battery sheet gap can be made like this to expose to aluminium foil layer upper surface again through this pet layer.Due to the high reflectance of aluminium foil layer upper surface, the sunlight overwhelming majority being therefore irradiated to aluminium foil layer again can reflect back and be utilized by solar battery sheet secondary.In addition, aluminium foil layer upper surface has carried out texturing process, define regularly arranged V-groove, and the interior angle of V-groove is between 120 degree to 135 degree, this surface texture can the direction of accommodation reflex light better, the light impinging perpendicularly on aluminium foil layer surface can not be returned along original route, but change direction reflexes to toughened glass surface with the incidence angle being greater than 45 degree, this angle is greater than the critical angle 42 degree of toughened glass and Air Interface, therefore this part light can be reflected back solar battery sheet surface again, thus increases the power output of assembly.
In addition, the regularly arranged groove structure of aluminium foil surface also can be set to semicircle, half elliptic or arc, incident light can be made like this by different multipath tolerant, reverberation is reflected uniformly again and utilizes to photovoltaic module, the effect of lifting subassembly power output can be reached equally.
Weathering layer in backboard selects fluorine material, is the one in PVF, PVDF, ETFE or ECTFE, and be preferably PVF, this kind of fluorine material structure is stablized, and has very excellent resistance to environmental aging characteristic, ensure that weatherability and the useful life of assembly.Aluminium foil layer in addition in backboard greatly improves the water vapor rejection ability of backboard, improves weatherability and the reliability of assembly further.
Those of ordinary skill in the art will be appreciated that, above embodiment is only used to the purpose of this utility model is described, and be not used as restriction of the present utility model, as long as in essential scope of the present utility model, the change of the above embodiment, modification all will be dropped in the scope of claim of the present utility model.
Claims (6)
1. a high durable photovoltaic module, comprise the toughened glass arranged, upper EVA layer, solar battery sheet, lower EVA layer and backboard from top to bottom, above-mentioned layers of material forms an entirety after high temperature lamination, it is characterized in that: described backboard comprises pet layer, the first adhesive layer, aluminium foil layer, the second adhesive layer and weathering layer from top to bottom, and layers of material is combined as a whole by adhesive.
2. high durable photovoltaic module as claimed in claim 1, is characterized in that: pet layer is transparent PETG.
3. high durable photovoltaic module as claimed in claim 1, is characterized in that: weathering layer is PVF, PVDF, ETFE or ECTFE.
4. high durable photovoltaic module as claimed in claim 1, it is characterized in that: aluminium foil layer upper surface has high reflectance, its reflectivity is higher than 95%.
5. high durable photovoltaic module as claimed in claim 1, it is characterized in that: aluminium foil layer upper surface has carried out texturing process, surface has regularly arranged V-groove, and the interior angle of V-groove is between 120 degree to 135 degree.
6. high durable photovoltaic module as claimed in claim 1, is characterized in that: the regularly arranged groove of aluminium foil upper surface is the structure of semicircle, half elliptic or arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521057293.3U CN205211772U (en) | 2015-12-17 | 2015-12-17 | High resistant photovoltaic module that waits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521057293.3U CN205211772U (en) | 2015-12-17 | 2015-12-17 | High resistant photovoltaic module that waits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205211772U true CN205211772U (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521057293.3U Expired - Fee Related CN205211772U (en) | 2015-12-17 | 2015-12-17 | High resistant photovoltaic module that waits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205211772U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129159A (en) * | 2016-07-26 | 2016-11-16 | 无锡中洁能源技术有限公司 | The solar cell backboard that a kind of reflecting properties is good |
| CN107623486A (en) * | 2017-09-29 | 2018-01-23 | 努比亚技术有限公司 | Solar cell bonnet, mobile terminal |
| CN108172653A (en) * | 2018-01-19 | 2018-06-15 | 中天科技精密材料有限公司 | A kind of PVDF thin film of high reflectance and preparation method thereof, application |
-
2015
- 2015-12-17 CN CN201521057293.3U patent/CN205211772U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129159A (en) * | 2016-07-26 | 2016-11-16 | 无锡中洁能源技术有限公司 | The solar cell backboard that a kind of reflecting properties is good |
| CN107623486A (en) * | 2017-09-29 | 2018-01-23 | 努比亚技术有限公司 | Solar cell bonnet, mobile terminal |
| CN108172653A (en) * | 2018-01-19 | 2018-06-15 | 中天科技精密材料有限公司 | A kind of PVDF thin film of high reflectance and preparation method thereof, application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20211217 |