CN204271103U - A kind of high heat radiation solar cell backboard - Google Patents
A kind of high heat radiation solar cell backboard Download PDFInfo
- Publication number
- CN204271103U CN204271103U CN201420864338.7U CN201420864338U CN204271103U CN 204271103 U CN204271103 U CN 204271103U CN 201420864338 U CN201420864338 U CN 201420864338U CN 204271103 U CN204271103 U CN 204271103U
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- solar cell
- cell backboard
- tack coat
- layer
- heat radiation
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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 solar cell backboard technical field, be specifically related to a kind of high heat radiation solar cell backboard, described solar cell backboard comprises the infrared-reflecting layers, the first tack coat, PET base material layer, the second tack coat and the weathering layer that set gradually from top to bottom, fitting with infrared-reflecting layers, PET base material layer respectively in the two sides of the first tack coat, fits with PET base material layer, weathering layer respectively in the two sides of the second tack coat.Back board structure of the present utility model is simple, easy to use, and packaging effect is excellent, lasting and heat dispersion is excellent.
Description
Technical field
The utility model relates to solar cell backboard technical field, is specifically related to a kind of high heat radiation solar cell backboard.
Background technology
Solar module mainly comprises backboard, solar cell circuit, packaging adhesive film and header board.
Solar cell backboard exempts from moisture and oxidation mainly for the protection of solar cell and packaging adhesive film.In the process of assembling solar cell panel, also utilize backboard as preventing the mechanical protection of cut etc. and playing insulating effect.
Sunlight is continuous print spectrum, and under normal circumstances, solar spectral (AM1.5) its energy arriving ground is about 1000W/m
2, the infrared light of wavelength cover from the ultraviolet light of 200nm to 2500nm is main.With the energy gap of silicon for 1.12eV calculates, crystal silicon solar energy battery dominant absorption utilizes the light of about 400-1100nm.And for the high-energy photon of wavelength lower than below 400nm, after being absorbed by solar cell, also can only produce pair of electrons-hole pair, all the other Conversion of Energy heat energy; Infrared spectrum wavelength being greater than to 1100nm can not be converted to electric energy by cell piece utilization, but is converted into heat energy.This two parts heat energy is enough to make inside solar energy battery temperature increase fast.Have document announcement, crystal silicon solar batteries working temperature often raises 1 DEG C, then the transformation efficiency of battery reduces 0.4%-0.5%.Therefore, strengthening heat radiation, reduce solar cell working temperature, is one of approach improving solar cell working efficiency.
In order to reduce solar module internal temperature, being typically employed in the base material one or both sides such as PET at present and being coated with high heat conducting coating, improve the conductive coefficient of backboard, be delivered in environment by the heat of heat conducting mode by battery.But this method is limited to the low thermal conductivity of PET base material, be difficult to obtain whole back plate and have desirable conductive coefficient, the reduction effect therefore often for battery operating temperature is also poor.
Summary of the invention
In order to overcome the shortcoming and defect existed in prior art, the purpose of this utility model is to provide a kind of packaging effect excellent, lasting and the height of heat dispersion excellence heat radiation solar cell backboard.
The purpose of this utility model is achieved through the following technical solutions: a kind of high heat radiation solar cell backboard, described solar cell backboard comprises the infrared-reflecting layers, the first tack coat, PET base material layer, the second tack coat and the weathering layer that set gradually from top to bottom, fitting with infrared-reflecting layers, PET base material layer respectively in the two sides of the first tack coat, fits with PET base material layer, weathering layer respectively in the two sides of the second tack coat.
Further, described weathering layer is the fluororesin modified polyolefin film that surface is provided with concavo-convex network.
Further, the density of described concavo-convex network is 2-6 lattice/10mm
2.
Further, described first tack coat, the second tack coat are layer of polyurethane, acrylate layer or epoxy resin layer.
Further, the water vapor transmittance of described solar cell backboard is < 1g/ m
2d, OTR oxygen transmission rate < 0.5 cm of described solar cell backboard
3/ m
224hatm.
Further, the thickness of described infrared-reflecting layers is 10-40 μm.
Further, the thickness of described first tack coat, the second tack coat is 5-30 μm.
Further, the thickness of described PET base material layer is 100-400 μm.
Further, the thickness of described weathering layer is 15-150 μm.
Further, the outer surface of described infrared-reflecting layers is fitted with the high thermal conductivity layer that thickness is 5-10 μm, and described high thermal conductivity layer is the fluorocarbon resin layer being added with heat filling.
The beneficial effects of the utility model are: backboard of the present utility model adopts reflection to red light layer, improves the reflecting properties of backboard to infrared light, reduces the heat absorption of black box, and then reduce the working temperature of battery, improve battery conversion efficiency.Backboard of the present utility model adopts the first tack coat and the second tack coat, makes all to have good resistance to steam breathability before and after adhesive property excellence, humid heat treatment between each layer.The PET base material layer that backboard of the present utility model adopts has resistant to hydrolysis, anti-oxidation function, extends service life, saves Financial cost.Backboard of the present utility model adopts weathering layer, the surface of fluororesin modified polyolefin film is made to be concavo-convex latticed by calendering sizing, increase the specific area of fluororesin modified polyolefin film, thus with form mechanical tong during backboard package curing and lock, obtain preferably cohesive force.
Back board structure of the present utility model is simple, easy to use, and packaging effect is excellent, lasting and heat dispersion is excellent.
Accompanying drawing explanation
Fig. 1 is the cutaway view of the utility model embodiment one.
Fig. 2 is the cutaway view of the utility model embodiment two.
Reference numeral is: 1-infrared-reflecting layers, the 2-the first tack coat, 3-PET base material layer, the 4-the second tack coat, 5-weathering layer, 6-high thermal conductivity layer.
Embodiment
For the ease of the understanding of those skilled in the art, be further described the utility model below in conjunction with embodiment and accompanying drawing 1-2, the content that execution mode is mentioned is not to restriction of the present utility model.
Embodiment one
Be illustrated in figure 1 the embodiment one of a kind of high heat radiation solar cell backboard described in the utility model, described solar cell backboard comprises infrared-reflecting layers 1, first tack coat 2, PET base material layer 3, second tack coat 4 and the weathering layer 5 that set gradually from top to bottom, fitting with infrared-reflecting layers 1, PET base material layer 3 respectively in the two sides of the first tack coat 2, fits with PET base material layer 3, weathering layer 5 respectively in the two sides of the second tack coat 4.
Backboard of the present utility model adopts reflection to red light layer, improves the reflecting properties of backboard to infrared light, reduces the heat absorption of black box, and then reduces the working temperature of battery, improves battery conversion efficiency.Backboard of the present utility model adopts the first tack coat 2 and the second tack coat 4, makes all to have good resistance to steam breathability before and after adhesive property excellence, humid heat treatment between each layer.The PET base material layer 3 that backboard of the present utility model adopts has resistant to hydrolysis, anti-oxidation function, extends service life, saves Financial cost.Backboard of the present utility model adopts weathering layer 5, the surface of fluororesin modified polyolefin film is made to be concavo-convex latticed by calendering sizing, increase the specific area of fluororesin modified polyolefin film, thus with form mechanical tong during backboard package curing and lock, obtain preferably cohesive force.
Back board structure of the present utility model is simple, easy to use, and packaging effect is excellent, lasting and heat dispersion is excellent.
In the present embodiment, described weathering layer 5 is fluororesin modified polyolefin films that surface is provided with concavo-convex network.Concrete, described fluororesin modified polyolefin film comprises the raw material of following weight portion: PP resin 70-90 part, exhaustive fluorinated ethylene propylene 10-30 part, UV absorbers 0.1-1 part, antioxidant 0.1-0.5 part and TiO
25-10 part.Weathering layer 5 of the present utility model adopts fluororesin modified vistanex, the surface of fluororesin modified polyolefin film is made to be concavo-convex latticed by calendering sizing, increase the specific area of fluororesin modified polyolefin film, thus with form mechanical tong during backboard package curing and lock, obtain preferably cohesive force.
In the present embodiment, the density of described concavo-convex network is 2-6 lattice/10mm
2.This parameter the specific area that can increase fluororesin modified polyolefin film is set, thus with form mechanical tong during backboard package curing and lock, obtain preferably cohesive force.
In the present embodiment, described first tack coat 2, second tack coat 4 is layer of polyurethane, acrylate layer or epoxy resin layer.Tack coat of the present utility model adopts layer of polyurethane, acrylate layer or epoxy resin layer, makes all to have good resistance to steam breathability before and after adhesive property excellence, humid heat treatment between each layer.
In the present embodiment, the water vapor transmittance of described solar cell backboard is < 1g/ m
2d, OTR oxygen transmission rate < 0.5 cm of described solar cell backboard
3/ m
224hatm.Backboard of the present invention has higher water vapor barrier property and oxygen-barrier property, effectively can improve the hydrothermal aging performance of backboard.
In the present embodiment, the thickness of described infrared-reflecting layers 1 is 10-40 μm.For making the utility model reach best result of use, the thickness of described infrared-reflecting layers 1 is 25 μm.
In the present embodiment, the thickness of described first tack coat 2, second tack coat 4 is 5-30 μm.For making the utility model reach best result of use, the thickness of described first tack coat 2, second tack coat 4 is 20 μm.
In the present embodiment, the thickness of described PET base material layer 3 is 100-400 μm.For making the utility model reach best result of use, the thickness of described PET base material layer 3 is 250 μm.
In the present embodiment, the thickness of described weathering layer 5 is 15-150 μm.For making the utility model reach best result of use, the thickness of described weathering layer 5 is 80 μm.
Embodiment two
Be illustrated in figure 2 the embodiment two of a kind of high heat radiation solar cell backboard described in the utility model, be with the difference of above-described embodiment one: the outer surface of described infrared-reflecting layers 1 is fitted with the high thermal conductivity layer 6 that thickness is 5-10 μm, described high thermal conductivity layer 6 is for being added with the fluorocarbon resin layer of heat filling.The utility model is by adopting the fluorocarbon resin layer being added with heat filling as heat-conducting layer 6, and good heat dissipation effect, photoelectric conversion rate are high.
Above-described embodiment is the utility model preferably implementation, and in addition, the utility model can also realize by alternate manner, and any apparent replacement is all within protection range of the present utility model without departing from the concept of the premise utility.
Claims (10)
1. one kind high heat radiation solar cell backboard, it is characterized in that: described solar cell backboard comprises the infrared-reflecting layers, the first tack coat, PET base material layer, the second tack coat and the weathering layer that set gradually from top to bottom, fitting with infrared-reflecting layers, PET base material layer respectively in the two sides of the first tack coat, fits with PET base material layer, weathering layer respectively in the two sides of the second tack coat.
2. a kind of high heat radiation solar cell backboard according to claim 1, is characterized in that: described weathering layer is the fluororesin modified polyolefin film that surface is provided with concavo-convex network.
3. a kind of high heat radiation solar cell backboard according to claim 2, is characterized in that: the density of described concavo-convex network is 2-6 lattice/10mm
2.
4. a kind of high heat radiation solar cell backboard according to claim 1, is characterized in that: described first tack coat, the second tack coat are layer of polyurethane, acrylate layer or epoxy resin layer.
5. a kind of high heat radiation solar cell backboard according to claim 1, is characterized in that: the water vapor transmittance of described solar cell backboard is < 1g/ m
2d; OTR oxygen transmission rate < 0.5 cm of described solar cell backboard
3/ m
224hatm.
6. a kind of high heat radiation solar cell backboard according to claim 1, is characterized in that: the thickness of described infrared-reflecting layers is 10-40 μm.
7. a kind of high heat radiation solar cell backboard according to claim 1, is characterized in that: the thickness of described first tack coat, the second tack coat is 5-30 μm.
8. a kind of high heat radiation solar cell backboard according to claim 1, is characterized in that: the thickness of described PET base material layer is 100-400 μm.
9. a kind of high heat radiation solar cell backboard according to claim 1, is characterized in that: the thickness of described weathering layer is 15-150 μm.
10. a kind of high heat radiation solar cell backboard according to claim 1, it is characterized in that: the outer surface of described infrared-reflecting layers is fitted with the high thermal conductivity layer that thickness is 5-10 μm, described high thermal conductivity layer is the fluorocarbon resin layer being added with heat filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420864338.7U CN204271103U (en) | 2014-12-31 | 2014-12-31 | A kind of high heat radiation solar cell backboard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420864338.7U CN204271103U (en) | 2014-12-31 | 2014-12-31 | A kind of high heat radiation solar cell backboard |
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| Publication Number | Publication Date |
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| CN204271103U true CN204271103U (en) | 2015-04-15 |
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| CN201420864338.7U Active CN204271103U (en) | 2014-12-31 | 2014-12-31 | A kind of high heat radiation solar cell backboard |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106024951A (en) * | 2016-07-26 | 2016-10-12 | 无锡中洁能源技术有限公司 | High-heat-radiation solar cell backboard |
-
2014
- 2014-12-31 CN CN201420864338.7U patent/CN204271103U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106024951A (en) * | 2016-07-26 | 2016-10-12 | 无锡中洁能源技术有限公司 | High-heat-radiation solar cell backboard |
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