CN209150134U - A kind of reflective membrane improving photovoltaic conversion efficiency - Google Patents
A kind of reflective membrane improving photovoltaic conversion efficiency Download PDFInfo
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- CN209150134U CN209150134U CN201821896178.9U CN201821896178U CN209150134U CN 209150134 U CN209150134 U CN 209150134U CN 201821896178 U CN201821896178 U CN 201821896178U CN 209150134 U CN209150134 U CN 209150134U
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- layer
- triangular prism
- conversion efficiency
- reflective
- photovoltaic conversion
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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
- Y02E10/52—PV systems with concentrators
Abstract
The utility model discloses a kind of reflective membranes for improving photovoltaic conversion efficiency, including substrate layer, adhesive layer, microprism layer, reflective layer, the lower surface of the substrate layer and the upper surface of adhesive layer connect, the upper surface of the substrate layer is connect with the lower surface of microprism layer, the upper surface of the microprism layer is arranged in the reflective layer, and the microprism layer is rearranged by the different triangular prism sequential parallel of several shape sizes.The utility model greatly increases reflective surface area, and then significantly improve photovoltaic conversion efficiency, pass through the random unordered mode resistance to compression lodging tolerance arranged in parallel that can effectively enhance entire reflective membrane of the different triangular prism of several shape sizes simultaneously, photovoltaic module is not only set to be applicable in the area of different direction of illuminations, and reduce the amount of light reflected outside photovoltaic glass, reduce light offset bring energy loss, improves the solar energy utilization ratio under different solar incident angle degree.
Description
Technical field
The utility model relates to a kind of reflective membrane more particularly to a kind of reflective membranes for improving photovoltaic conversion efficiency.
Background technique
Solar energy is environmentally protective, non-environmental-pollution, and is renewable resource, in the case of current energy shortage, too
Sun can be a kind of tool new energy with broad prospects for development.It therefore, can as emerging by solar photovoltaic technology
Renewable sources of energy technology, is widely used in recent years.
Currently used photovoltaic module is a kind of semiconductor devices that the luminous energy of the sun is converted into electric energy, and market is more
Number photovoltaic module is all that each single battery piece is connected by welding, to form a complete electric path.However
Since welding surface is usually smooth tinning layer, sunlight exposes to welding surface after total reflection, can not continue to utilize,
Cause the reduction of sun light utilization efficiency.Its area coverage accounts for about 3%~4% or so of entire cell area, is equivalent to and has lost entirely
3%~4% output power of Solar use, there are certain limitations.
In order to which by the significantly more efficient utilization of the sunlight at welding position, there are mainly two types of solutions at present: the first is
Special welding is prepared, by the way that V-arrangement ditch slot structure is processed on welding surface, and passes through vapor deposition, spraying plating, chemistry in flute surfaces
The methods of plating obtains the reflective layer with high reflectivity energy, in the groove of incident light beam strikes to welding surface, by reflective layer
Mirror-reflection, glass and air refraction after sunlight secondary reflected into cell piece surface around, to improve incident light
Utilization rate.But this welding is there are processing difficulties, it is inconvenient for use, scolding tin is at high cost the defects of, be unfavorable for producing in batches.The
Two kinds have the reflective strip of triangular prism structure by pasting one on every welding surface to improve sun light utilization efficiency, but should
Kind reflective strip structure is simple, and low efficiency, reflected light limited area, some light, which reflexes to, is unable to fully benefit except photovoltaic cell
With.Under the incidence of different angle sunlight, it is difficult to obtain maximum conversion efficiency.
Summary of the invention
The utility model is usually smooth tinning layer for existing welding surface, and sunlight exposes to welding surface by complete
It can not continue to utilize after reflection, cause the reduction of sun light utilization efficiency, the defects of there are certain limitations provides a kind of new
A kind of reflective membrane improving photovoltaic conversion efficiency.
In order to solve the above-mentioned technical problem, the utility model is achieved through the following technical solutions:
A kind of reflective membrane improving photovoltaic conversion efficiency, including substrate layer, adhesive layer, microprism layer, reflective layer, it is described
The lower surface of substrate layer and the upper surface of adhesive layer connect, and the upper surface of the substrate layer and the lower surface of microprism layer connect
Connect, the reflective layer is arranged in the upper surface of the microprism layer, the microprism layer by several shape sizes it is different three
Prism sequential parallel rearranges.
It is to be connected for the ease of reflective membrane with photovoltaic module that the lower surface of substrate layer, which is provided with adhesive layer, is guaranteed anti-
The stability of light film during the work time.In such a way that triangular prism sequential parallel is rearranged microprism layer be in order to it is anti-
Photosphere cooperation, to greatly increase reflective surface area, and then significantly improves photovoltaic conversion efficiency, while passing through several
The random unordered mode resistance to compression arranged in parallel that can effectively enhance entire reflective membrane of the different triangular prism of shape size is anti-fall
Volt ability not only allows photovoltaic module be applicable in the area of different direction of illuminations, but also reduces and reflect outside photovoltaic glass
Amount of light reduces light offset bring energy loss, improves the solar energy utilization ratio under different solar incident angle degree,
More existing general components have 2.0~2.5% power gains, extremely meet the needs of modern society's production and living.
Preferably, a kind of reflective membrane of raising photovoltaic conversion efficiency described above, the extending direction of the triangular prism
Angle with the angle a of the extending direction of substrate layer is 0 °~180 °.
By the angle of the extending direction of triangular prism and the angle a of the extending direction of substrate layer be arranged to 0 °~180 ° be in order to
Guarantee that the light source of different direction of illuminations can reflex in cell piece around, general components is allow to be applicable in different direction of illuminations
Area, increase the versatility of reflective membrane.
Preferably, a kind of reflective membrane of raising photovoltaic conversion efficiency described above, the cross section shape of the triangular prism
Shape is isosceles triangle, and the angle of the apex angle b of the isosceles triangle is 90 °~140 °.
Triangular prism structure is arranged to the polygon prism arrangement form of the unordered apex angle in above-mentioned angular range, it can be effective
Enhance the resistance to compression lodging tolerance of entire reflective membrane, and effectively reduces light source original road and reflect the quantity outside photovoltaic glass, from
And improve light source utilization rate.
Preferably, a kind of reflective membrane of raising photovoltaic conversion efficiency described above, the apex angle of the triangular prism is in circle
Arc, the radius R of the arc-shaped apex angle are 0.5 μm~5 μm.
By triangular prism apex angle be arranged it is in the arc-shaped and by the radius of arc-shaped apex angle setting within the above range can be effective
The entire reflective membrane of enhancing resistance to compression lodging tolerance, and effectively reduce light source original road and reflect the light number outside photovoltaic glass
Amount, to improve light source utilization rate.
Preferably, a kind of reflective membrane of raising photovoltaic conversion efficiency described above, the height h of the triangular prism is 10
μm~20 μm.
Triangular prism structure is arranged to the polygon prism arrangement form of the unordered height in above-mentioned altitude range, can be had into one
Step enhances the resistance to compression lodging tolerance of entire reflective membrane, and greatly reduces light source original road and reflect outside photovoltaic glass, thus into
One step improves light source utilization rate.
Preferably, a kind of reflective membrane of raising photovoltaic conversion efficiency described above, the triangular prism top is by straight line
Or wave cuts off to form section, the wide L of the section is 0.5 μm~5 μm.
By setting is in line at the top of triangular prism structure or waveform cuts off the section arrangement form to be formed, can effectively increase
The resistance to compression lodging tolerance of strong entire reflective membrane, and further reduce light source original road and reflect quantity outside photovoltaic glass,
Greatly improve light source utilization rate.
Trigone preferably, a kind of reflective membrane of raising photovoltaic conversion efficiency described above, in the microprism layer
Column is in periodic arrangement, and the spacing distance W in two periods of arbitrary neighborhood of the periodic arrangement is 1mm~1.2mm, described each
Triangular prism arrangement sequence in period is not exactly the same.
It is in order to ensure this reflective membrane by the form that the triangular prism structure in microprism layer is arranged to above-mentioned periodic arrangement
The width of finished product is equal with the width for being covered in welding surface, and maximumlly utilizes cell piece effective area, to improve
Light source utilization rate.
Preferably, a kind of reflective membrane of raising photovoltaic conversion efficiency described above, one in the microprism layer
In the triangular prism arrangement period, the height of the triangular prism at both ends is higher than the height of intermediate triangular prism.
In a triangular prism arrangement period, the height of the triangular prism at both ends is disposed above to the height of intermediate triangular prism
Degree, can effectively stop the reflection source on edge cell piece to cell piece external reflectance, so that solar source be enable to reflect
It returns in cell piece and is recycled, improve the transfer efficiency of light source.
Preferably, a kind of reflective membrane of raising photovoltaic conversion efficiency described above, the substrate layer with a thickness of 50 μ
M~75 μm, the material of the substrate layer are polycarbonate, poly terephthalic acid binaryglycol ester, polyamide, polyphenyl second
One of alkene, polyethylene, polymethyl methacrylate.
The thickness of substrate layer is selected in above-mentioned thickness range, can effectively reduce the thickness of entire reflective membrane, really
Protecting component will not select above-mentioned material as base in lamination process because of bad defects such as the blocked up generation bubble of reflective membrane, protrusions
The material of material layer is that while having high transparency, low haze in order to ensure final reflective membrane obtained has certain stiffening property.
Preferably, a kind of reflective membrane of raising photovoltaic conversion efficiency described above, the adhesive layer with a thickness of
10 μm~20 μm, the material of the adhesive layer is one of polyurethane, acetate ethylene copolymer, copolyamide, copolyesters.
By the above-mentioned material of the material selection of adhesive layer be in order to ensure reflective membrane finished product winding when will not be adhered mutually,
Without supplementary protection film, release film, effectively reduce production cost, by adhesive layer select above-mentioned thickness be in order to
Ensure that the bonding force of adhesive layer can satisfy the demand for pasting substrate layer, pasting welding surface.
Preferably, a kind of reflective membrane of raising photovoltaic conversion efficiency described above, the reflective layer with a thickness of 10 μ
M~20 μm, reflective layer are aluminium coated.
Reflective layer is arranged in the optical density and high reflectance of available optimization in above-mentioned thickness range, is had simultaneously
The defects of having low-resistivity, can effectively prevent short circuit current, selects aluminium coated as reflective layer, can effectively reduce life
Cost is produced, while higher light reflectance can be obtained, improves light source utilization rate.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for the reflective membrane for improving photovoltaic conversion efficiency of the utility model；
Fig. 2 is the partial enlarged view in the portion A in Fig. 1；
Fig. 3 is the structural schematic diagram of triangular prism arragement direction in the utility model；
Fig. 4 is the structural schematic diagram when apex angle of triangular prism in the utility model is arranged in the arc-shaped；
Fig. 5 is that the apex angle of triangular prism in the utility model is cut off structural schematic diagram when forming section by straight line；
Fig. 6 is that the apex angle of triangular prism in the utility model is cut off structural schematic diagram when forming section by wave.
Specific embodiment
1-6 and specific embodiment are described in further detail the utility model with reference to the accompanying drawing, but they are not
Limitations of the present invention:
Embodiment 1
A kind of reflective membrane improving photovoltaic conversion efficiency, including substrate layer 3, adhesive layer 4, microprism layer 2, reflective layer 1,
The lower surface of the substrate layer 3 is connect with the upper surface of adhesive layer 4, under the upper surface of the substrate layer 3 and microprism layer 2
The upper surface of the microprism layer 2 is arranged in surface connection, the reflective layer 1, and the microprism layer 2 is by several shape sizes
Different 21 sequential parallel of triangular prism rearranges.
Preferably, the angle of the angle a of the extending direction of the extending direction of the triangular prism 21 and substrate layer 3 is 0 °.
Preferably, the cross-sectional shape of the triangular prism 21 is isosceles triangle, the apex angle b's of the isosceles triangle
Angle is 90 °.
Preferably, the apex angle of the triangular prism 21 is arc-shaped, the radius R of the arc-shaped apex angle is 0.5 μm.
Preferably, the height h of the triangular prism 21 is 10 μm.
Preferably, 21 top of triangular prism is cut off by straight line or wave and forms section, the wide L of the section is
0.5μm。
Preferably, the triangular prism 21 in the microprism layer 2 is in periodic arrangement, any phase of the periodic arrangement
The spacing distance W in adjacent two periods is 1mm, and the triangular prism 21 in each period puts in order not exactly the same.
Preferably, in 21 arrangement period of triangular prism in the microprism layer 2, the height of the triangular prism 21 at both ends
Higher than the height of intermediate triangular prism 21.
Preferably, the substrate layer 3 with a thickness of 50 μm, the material of the substrate layer 3 is polycarbonate, poly- to benzene two
One of formic acid binaryglycol ester, polyamide, polystyrene, polyethylene, polymethyl methacrylate.
Preferably, the adhesive layer 4 with a thickness of 10 μm, the material of the adhesive layer 4 is polyurethane, acetic acid second
One of alkene copolymer, copolyamide, copolyesters.
Preferably, the reflective layer 1 with a thickness of 10 μm, reflective layer 1 is aluminium coated.
Embodiment 2
A kind of reflective membrane improving photovoltaic conversion efficiency, including substrate layer 3, adhesive layer 4, microprism layer 2, reflective layer 1,
The lower surface of the substrate layer 3 is connect with the upper surface of adhesive layer 4, under the upper surface of the substrate layer 3 and microprism layer 2
The upper surface of the microprism layer 2 is arranged in surface connection, the reflective layer 1, and the microprism layer 2 is by several shape sizes
Different 21 sequential parallel of triangular prism rearranges.
Preferably, the extending direction of the triangular prism 21 and the angle of the angle a of the extending direction of substrate layer 3 are
180°。
Preferably, the cross-sectional shape of the triangular prism 21 is isosceles triangle, the apex angle b's of the isosceles triangle
Angle is 140 °.
Preferably, the apex angle of the triangular prism 21 is arc-shaped, the radius R of the arc-shaped apex angle is 5 μm.
Preferably, the height h of the triangular prism 21 is 20 μm.
Preferably, 21 top of triangular prism is cut off by straight line or wave and forms section, the wide L of the section is 5 μ
m。
Preferably, the triangular prism 21 in the microprism layer 2 is in periodic arrangement, any phase of the periodic arrangement
The spacing distance W in adjacent two periods is 1.2mm, and the triangular prism 21 in each period puts in order not exactly the same.
Preferably, in 21 arrangement period of triangular prism in the microprism layer 2, the height of the triangular prism 21 at both ends
Higher than the height of intermediate triangular prism 21.
Preferably, the substrate layer 3 with a thickness of 75 μm, the material of the substrate layer 3 is polycarbonate, poly- to benzene two
One of formic acid binaryglycol ester, polyamide, polystyrene, polyethylene, polymethyl methacrylate.
Preferably, the adhesive layer 4 with a thickness of 20 μm, the material of the adhesive layer 4 is polyurethane, acetic acid second
One of alkene copolymer, copolyamide, copolyesters.
Preferably, the reflective layer 1 with a thickness of 20 μm, reflective layer 1 is aluminium coated.
Embodiment 3
A kind of reflective membrane improving photovoltaic conversion efficiency, including substrate layer 3, adhesive layer 4, microprism layer 2, reflective layer 1,
The lower surface of the substrate layer 3 is connect with the upper surface of adhesive layer 4, under the upper surface of the substrate layer 3 and microprism layer 2
The upper surface of the microprism layer 2 is arranged in surface connection, the reflective layer 1, and the microprism layer 2 is by several shape sizes
Different 21 sequential parallel of triangular prism rearranges.
Preferably, the angle of the angle a of the extending direction of the extending direction of the triangular prism 21 and substrate layer 3 is 90 °.
Preferably, the cross-sectional shape of the triangular prism 21 is isosceles triangle, the apex angle b's of the isosceles triangle
Angle is 115 °.
Preferably, the apex angle of the triangular prism 21 is arc-shaped, the radius R of the arc-shaped apex angle is 2.75 μm.
Preferably, the height h of the triangular prism 21 is 15 μm.
Preferably, 21 top of triangular prism is cut off by straight line or wave and forms section, the wide L of the section is
2.75μm。
Preferably, the triangular prism 21 in the microprism layer 2 is in periodic arrangement, any phase of the periodic arrangement
The spacing distance W in adjacent two periods is 1.1mm, and the triangular prism 21 in each period puts in order not exactly the same.
Preferably, in 21 arrangement period of triangular prism in the microprism layer 2, the height of the triangular prism 21 at both ends
Higher than the height of intermediate triangular prism 21.
Preferably, the substrate layer 3 with a thickness of 62.5 μm, the material of the substrate layer 3 is polycarbonate, poly- to benzene
One of dicarboxylic diol ester, polyamide, polystyrene, polyethylene, polymethyl methacrylate.
Preferably, the adhesive layer 4 with a thickness of 15 μm, the material of the adhesive layer 4 is polyurethane, acetic acid second
One of alkene copolymer, copolyamide, copolyesters.
Preferably, the reflective layer 1 with a thickness of 15 μm, reflective layer 1 is aluminium coated.
In short, the above is only the preferred embodiment of the present invention, all ranges according to present utility model application patent
Made equivalent changes and modifications should all belong to the covering scope of the utility model.
Claims (11)
1. a kind of reflective membrane for improving photovoltaic conversion efficiency, including it is substrate layer (3), adhesive layer (4), microprism layer (2), reflective
Layer (1), the lower surface of the substrate layer (3) connect with the upper surface of adhesive layer (4), the upper surface of the substrate layer (3) and
The lower surface of microprism layer (2) connects, and the reflective layer (1) is arranged in the upper surface of the microprism layer (2), and feature exists
In: the microprism layer (2) is rearranged by the different triangular prism of several shape sizes (21) sequential parallel.
2. a kind of reflective membrane for improving photovoltaic conversion efficiency according to claim 1, it is characterised in that: the triangular prism
(21) angle of the angle a of the extending direction of extending direction and substrate layer (3) is 0 °~180 °.
3. a kind of reflective membrane for improving photovoltaic conversion efficiency according to claim 1, it is characterised in that: the triangular prism
(21) cross-sectional shape is isosceles triangle, and the angle of the apex angle b of the isosceles triangle is 90 °~140 °.
4. a kind of reflective membrane for improving photovoltaic conversion efficiency according to claim 3, it is characterised in that: the triangular prism
(21) apex angle is arc-shaped, and the radius R of the arc-shaped apex angle is 0.5 μm~5 μm.
5. a kind of reflective membrane for improving photovoltaic conversion efficiency according to claim 3, it is characterised in that: the triangular prism
(21) height h is 10 μm~20 μm.
6. a kind of reflective membrane for improving photovoltaic conversion efficiency according to claim 3, it is characterised in that: the triangular prism
(21) top is cut off by straight line or wave forms section, and the wide L of the section is 0.5 μm~5 μm.
7. a kind of reflective membrane for improving photovoltaic conversion efficiency according to claim 1, it is characterised in that: the microprism layer
(2) triangular prism (21) in is in periodic arrangement, and the spacing distance W in two periods of arbitrary neighborhood of the periodic arrangement is
1mm~1.2mm, the triangular prism (21) in each period put in order not exactly the same.
8. a kind of reflective membrane for improving photovoltaic conversion efficiency according to claim 7, it is characterised in that: the microprism layer
(2) in triangular prism (21) arrangement period in, the height of the triangular prism (21) at both ends is higher than intermediate triangular prism (21)
Highly.
9. a kind of reflective membrane for improving photovoltaic conversion efficiency according to claim 1, it is characterised in that: the substrate layer
(3) with a thickness of 50 μm~75 μm, the material of the substrate layer (3) is polycarbonate, poly terephthalic acid binaryglycol ester, poly-
One of amide resin, polystyrene, polyethylene, polymethyl methacrylate.
10. a kind of reflective membrane for improving photovoltaic conversion efficiency according to claim 1, it is characterised in that: the adhesive
Layer (4) with a thickness of 10 μm~20 μm, the material of the adhesive layer (4) is polyurethane, acetate ethylene copolymer, copolymerization acyl
One of amine, copolyesters.
11. a kind of reflective membrane for improving photovoltaic conversion efficiency according to claim 1, it is characterised in that: the reflective layer
(1) with a thickness of 10 μm~20 μm, reflective layer (1) is aluminium coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821896178.9U CN209150134U (en) | 2018-11-19 | 2018-11-19 | A kind of reflective membrane improving photovoltaic conversion efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821896178.9U CN209150134U (en) | 2018-11-19 | 2018-11-19 | A kind of reflective membrane improving photovoltaic conversion efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209150134U true CN209150134U (en) | 2019-07-23 |
Family
ID=67286269
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821896178.9U Active CN209150134U (en) | 2018-11-19 | 2018-11-19 | A kind of reflective membrane improving photovoltaic conversion efficiency |
Country Status (1)
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| CN (1) | CN209150134U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473501A (en) * | 2018-11-19 | 2019-03-15 | 常州华威新材料有限公司 | A kind of reflective membrane and preparation method thereof improving photovoltaic conversion efficiency |
| US11351745B2 (en) | 2020-08-27 | 2022-06-07 | Aura Optical Systems, Lp | Microprismatic retroreflective mold, sheet, and article and methods of manufacture thereof |
-
2018
- 2018-11-19 CN CN201821896178.9U patent/CN209150134U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473501A (en) * | 2018-11-19 | 2019-03-15 | 常州华威新材料有限公司 | A kind of reflective membrane and preparation method thereof improving photovoltaic conversion efficiency |
| US11351745B2 (en) | 2020-08-27 | 2022-06-07 | Aura Optical Systems, Lp | Microprismatic retroreflective mold, sheet, and article and methods of manufacture thereof |
| US11691365B2 (en) | 2020-08-27 | 2023-07-04 | Aura Optical Systems, Lp | Microprismatic retroreflective mold, sheet, and article and methods of manufacture thereof |
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