CN209045573U - Reflective membrane and photovoltaic module - Google Patents
Reflective membrane and photovoltaic module Download PDFInfo
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- CN209045573U CN209045573U CN201821480383.7U CN201821480383U CN209045573U CN 209045573 U CN209045573 U CN 209045573U CN 201821480383 U CN201821480383 U CN 201821480383U CN 209045573 U CN209045573 U CN 209045573U
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- reflective membrane
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model provides a kind of reflective membrane, the reflective membrane successively includes adhesive layer from the bottom to top, basal layer, structure sheaf, reflective layer and protective layer, the structure sheaf includes pedestal and multiple micro-structures arranged in parallel for being set on the pedestal, the protective layer includes upper and lower surfaces, the upper surface is smooth, the shape of the protective layer lower surface is matched with the shape of the reflective layer, so that the protective layer can be covered on the surface of the reflective layer completely, the protective layer is hyaline layer and the covering micro-structure and the reflective layer being arranged in the micro-structure.Reflective membrane provided by the utility model can avoid reflective membrane lower layer by direct sunlight accelerated ageing, reduce reflective layer surface scratch, while reflective layer being avoided to be improved the service life of reflective membrane by the corrosion of acid, steam and oxygen.The utility model also provides a kind of photovoltaic module using the reflective membrane.
Description
Technical field
The utility model relates to solar cell module field more particularly to a kind of reflective membranes and photovoltaic module.
Background technique
With the development of economy, demand of the people to the energy rapidly increases, and solar energy is a kind of extraordinary selection.At present
People are exactly photovoltaic power generation to the main Land use systems of solar energy, main at present to design the micro- knot of zigzag using on welding surface
Structure, increases the total amount of cell piece light in photovoltaic module with the principle of total reflection, so that the power of photovoltaic module is promoted, and
For photovoltaic module during long-time service, encapsulation glue-line will appear aging phenomenon, at the same photovoltaic module open-air atmosphere can not
Steam and oxygen are penetrated into the meeting avoided, and the reflective layer of photovoltaic module is mostly metal material such as aluminium etc., is highly prone to acid corrosion, or
Corrosiveness caused by person's water and oxygen collective effect, the reflective layer being directly exposed to air be easy to cause surface scratch, from
And reflective layer is destroyed, reflector efficiency is reduced, photovoltaic module power is reduced.
Utility model content
In view of this, can avoid reflective layer it is necessary to provide a kind of photovoltaic module reflective membrane and corroded, improve anti-
The service life of light film and the power for guaranteeing photovoltaic module.
The utility model provides a kind of reflective membrane, and the reflective membrane successively includes adhesive layer, basal layer, structure from the bottom to top
Layer, reflective layer and protective layer, the structure sheaf include pedestal and multiple micro-structures arranged in parallel for being set on the pedestal,
The protective layer includes upper and lower surfaces, and the upper surface is plane, the shape of the protective layer lower surface and described anti-
The shape of photosphere matches.
Further, the adhesive layer with a thickness of 10-30 μm, the basal layer with a thickness of 50-150 μm, the bottom
Seat with a thickness of 5-10 μm, the height of the micro-structure is 10-30 μm, the reflective layer with a thickness of 20-300nm, the guarantor
Covering thickness is 10-100 μm.
Further, the shape of the micro-structure is triangular prism, and the micro-structure is arranged on the base, micro- knot
The extending direction of the extending direction of structure and the reflective membrane forms angle α, the angle be 0 °≤α <, 90 ° or 90 ° < α≤
180°。
Further, the micro-structure cross section is isosceles triangle, the bottom edge of the cross-sectional triangle of the micro-structure
Parallel with plane where the pedestal, the isosceles triangle base angle is 30 degree, and bottom edge length is 30~100 μm.
Further, the height of the protective layer is greater than the height of the micro-structure.
A kind of photovoltaic module, including solar battery sheet and backboard, the photovoltaic module further include the reflective membrane.
Photovoltaic module reflective membrane provided by the utility model, is arranged a protective layer on reflective layer, can protect anti-
Crest line, which is worn, at the top of light film micro-structure generates light leakage phenomena etc., is accelerated to can avoid reflective membrane lower layer by direct sunlight
Aging can also reduce reflective layer surface scratch, guarantee reflector efficiency, while the high obstructing performance of protective layer can avoid reflective layer
Corrosion by acid, steam and oxygen in assembly, improves the service life of reflective membrane.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the photovoltaic module reflective membrane in one embodiment of the utility model.
Fig. 2 is the flow diagram of the production method of the photovoltaic module reflective membrane in one embodiment of the utility model.
Main element symbol description
| Reflective membrane | 100 |
| Adhesive layer | 10 |
| Basal layer | 20 |
| Structure sheaf | 30 |
| Pedestal | 31 |
| Micro-structure | 32 |
| Reflective layer | 40 |
| Protective layer | 50 |
The following detailed description will be further explained with reference to the above drawings the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
It should be noted that it can be directly on another component when component is referred to as " being installed in " another component
Or there may also be components placed in the middle.When a component is considered as " being set to " another component, it, which can be, is directly set
Set on another component or may be simultaneously present component placed in the middle.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include
Any and all combinations of one or more related listed items.
Referring to Fig. 1, Fig. 1 is the structural representation of the photovoltaic module reflective membrane 100 in one embodiment of the utility model
Figure, the reflective membrane 100 be covered on the solar battery on piece of photovoltaic module welding or other be set to shadow on photovoltaic module
It rings solar irradiation to be mapped on the component of solar battery on piece, the sunlight reflection refraction for that will be irradiated on the welding
To solar battery on piece, increases the light total amount of cell piece in photovoltaic module, promote the power of photovoltaic module.The reflective membrane
100 successively include adhesive layer 10, basal layer 20, structure sheaf 30, reflective layer 40 and protective layer 50 from bottom to up.The adhesive layer 10
The opposite two sides of the basal layer 20 are respectively arranged at structure sheaf 30, the reflective layer 40 and protective layer 50 are set in turn in institute
It states on structure sheaf 30.
The adhesive layer 10 include adhesive, for the reflective membrane 100 is fixed on solar panel welding or
On person's backboard, the thickness of the adhesive layer 10 is set as 10 μm~30 μm.In the present embodiment, used in the adhesive layer 10
Material is EVA hot-melt adhesive.In other embodiments, material used in the adhesive layer 10 is organic siliconresin, asphalt mixtures modified by epoxy resin
One of rouge, polyvinyl butyral (PVB) and ethylene octene copolymer (POE) or multiple mixed materials.
The adhesive layer 10 is set to 20 side of basal layer, the basal layer 20 with a thickness of 50-150 μm, it is described
20 material therefor of basal layer is PET material, and carries out two-sided corona to improve adhesion strength, in this implementation to the basal layer 20
In mode, the basal layer 20 is high-melting-point transparent PET material.
The structure sheaf 30 includes the micro-structure of pedestal 31 and the multiple periodic arrangements extended to 31 side of pedestal
32, in present embodiment, the micro-structure 32 is arranged in parallel with each other, and is convexly equipped in 31 side of pedestal.The pedestal 31 deviates from
The side of the micro-structure 32 is connected on the basal layer 20, the pedestal with a thickness of 5-10 μm.
In the present embodiment, the shape of the micro-structure 32 is triangular prism structure, for ease of understanding, defines micro- knot
32 extending direction of structure is longitudinal axis, and the extending direction for defining the reflective membrane 100 is transverse axis, and the micro-structure 32 is non-to hang down
In line to be listed on the pedestal 31, i.e., the angle α range of the described longitudinal axis and transverse axis is 0 °≤α <, 90 ° or 90 ° < α
≤180°.As shown in Figure 1,32 extending direction of micro-structure is identical as the extending direction of the reflective membrane 100 at this time, i.e. angle
α is 0 degree.The height of the micro-structure 32 is 10-30 μm, and in the present embodiment, the cross section of the micro-structure 32 is isosceles
Triangle, the bottom edge of the cross-sectional triangle of the micro-structure 32 are parallel with the 31 place plane of pedestal.Two neighboring micro- knot
Close-packed arrays between structure 32.In the present embodiment, the cross section isosceles triangle base angle of the micro-structure 32 is 30 degree,
Bottom edge length is 30~100 μm.32 material of micro-structure is uv-curable glue.
The reflective layer 40 is the film layer being arranged in the micro-structure 32, specifically, the reflective layer 40 is logical for metal
Film layer made of the methods of vacuum evaporation, magnetron sputtering, vacuum sputtering or galvanoplastic is crossed, the reflective layer 40 is evenly applied to institute
State the surface of micro-structure 32.In the present embodiment, the film layer production method is vacuum evaporation, and the metal is aluminium.At it
In his embodiment, the metal is the one such or multiple mixed materials such as silver, chromium, nickel.The thickness of the reflective layer 10
For 20-300nm, preferably 40-100nm.
The protective layer 50 is arranged on the reflective layer 40, specifically, the protective layer 50 includes upper surface and following table
Face, the upper surface are sunlight shadow surface, and the upper surface is plane, can effectively avoid the unevenness because of the upper surface, shadow
The problem of ringing ray refractive index, the shape of 50 lower surface of protective layer is matched with the shape of the reflective layer, so that the guarantor
Sheath 50 can be covered on 40 surface of reflective layer completely.Specifically, the shape of the triangular prism shape and the micro-structure 32
Shape is mutually complementary, is fitted in the lower surface of the protective layer 50 on the reflective layer 40, the protective layer 50 covers described reflective
Layer 40 and micro-structure 32, the thickness of the protective layer 50 is greater than the thickness of the micro-structure 32, for ensuring the protective layer 50
The micro-structure 32 and reflective layer 40 can be completely covered, to play a protective role.The protective layer 50 is hyaline layer, to increase
Its light transmittance, the protective layer 50 with a thickness of 10-100 μm.The protective layer 50 be fluorine resin or fluoro-containing coating, wherein
The fluorine resin is one of ETF, PCTFE, PFA, FEP or multiple mixed materials.The protective layer 50 is mainly used for protecting
It protects the reflective layer 40 and is worn generation defect, while can also effectively obstruct acid, steam and oxygen etc. avoid described reflective
Layer 40 is corroded.
Fig. 2 is a kind of process signal of production method of the photovoltaic module reflective membrane 100 provided by the utility model
Figure, specifically includes the following steps:
S21 provides a kind of substrate, substrate is placed on coating apparatus, by roll-to-roll mode, on coating apparatus
Ultra-violet curing glue is added dropwise in substrate surface, glue is unfolded uniformly under the squeezing action of pressure roll and mold roller, and ultraviolet
Micro-structure is transferred out on solidification glue water layer, while carrying out radiation curing using high-intensitive ultraviolet lamp in the another side of substrate, is made
Then glue instantaneous solidification is removed from mold roller；
S22 is coated with one layer of hot melt adhesive by squeezing out compound method in the another side for the substrate for having made micro-structure；
S23 is coated with reflective layer in micro-structure surface by way of roll-to-roll vapor deposition；
S24 squeezes out a compound protective layer or using roll-to-roll mode in reflective layer in reflective layer surface using extruder
Surface coat protective layer；
S25, by way of cutting reflective membrane cut into the matched width of welding, and be wound into finished product.
In the step S21, die roll surface is carved with structure.On coating apparatus, substrate surface passes through automatic glue-dropping
Ultra-violet curing glue is added dropwise in system.The radiation intensity of ultraviolet lamp is 100~500mJ/cm2, transmission speed of the substrate in equipment
For 10~50m/min.Substrate is high-melting-point PET material.
The method of applying hot melt adhesives is to be expressed on substrate by single screw extrusion machine by die orifice in the step S22, heat
Melten gel be EVA or EAA, wherein the processing temperature of EVA hot-melt adhesive be 200 DEG C, content be 20~40%, recombination velocity be 50~
80m/min。
Evaporation rate in the step S23 is 100~300m/min.
Extruder temperature in the step S24 is 300~350 DEG C.Protective layer be fluorine resin or fluoro-containing coating, wherein
The fluorine resin is one of ETF, PCTFE, PFA, FEP or multiple mixed materials.
The width of reflective membrane is set as 1.2mm in the step S25.
Photovoltaic module reflective membrane provided by the utility model, is arranged a protective layer on reflective layer, can protect anti-
Crest line, which is worn, at the top of light film micro-structure generates light leakage phenomena etc., is accelerated to can avoid reflective membrane lower layer by direct sunlight
Aging can also reduce reflective layer surface scratch, guarantee reflector efficiency, while the high obstructing performance of protective layer can avoid reflective layer
Corrosion by acid, steam and oxygen in assembly, improves the service life of reflective membrane.
Those skilled in the art it should be appreciated that more than embodiment be intended merely to illustrate that this is practical new
Type, and be not used as the restriction to the utility model, as long as implementing in the spirit of the utility model to above
Suitably change and change made by mode and all falls in the range of the requires of the utility model protection.
Claims (6)
1. a kind of reflective membrane, it is characterised in that: the reflective membrane successively includes adhesive layer from the bottom to top, basal layer, structure sheaf, anti-
Photosphere and protective layer, the structure sheaf includes pedestal and multiple micro-structures arranged in parallel for being set on the pedestal, described
Protective layer includes upper and lower surfaces, and the upper surface is plane, the shape of the protective layer lower surface and the reflective layer
Shape matching.
2. photovoltaic module reflective membrane as described in claim 1, it is characterised in that: the adhesive layer with a thickness of 10-30 μm,
The basal layer with a thickness of 50-150 μm, the pedestal with a thickness of 5-10 μm, the height of the micro-structure is 10-30 μm,
The reflective layer with a thickness of 20-300nm, the protective layer thickness is 10-100 μm.
3. photovoltaic module reflective membrane as described in claim 1, it is characterised in that: the shape of the micro-structure is triangular prism,
On the base, the extending direction of the extending direction of the micro-structure and the reflective membrane forms angle for the micro-structure setting
α, the angle are 90 ° or 90 ° α≤180 ° < 0 °≤α <.
4. photovoltaic module reflective membrane as claimed in claim 3, it is characterised in that: the micro-structure cross section is isoceles triangle
Shape, the bottom edge of the cross-sectional triangle of the micro-structure is parallel with plane where the pedestal, and the isosceles triangle base angle is
30 degree, bottom edge length is 30~100 μm.
5. photovoltaic module reflective membrane as described in claim 1, it is characterised in that: the height of the protective layer is greater than described micro-
The height of structure.
6. a kind of photovoltaic module, including solar battery sheet and backboard, it is characterised in that: the photovoltaic module further includes such as right
It is required that reflective membrane described in 1-5 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821480383.7U CN209045573U (en) | 2018-09-10 | 2018-09-10 | Reflective membrane and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821480383.7U CN209045573U (en) | 2018-09-10 | 2018-09-10 | Reflective membrane and photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209045573U true CN209045573U (en) | 2019-06-28 |
Family
ID=67032828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821480383.7U Active CN209045573U (en) | 2018-09-10 | 2018-09-10 | Reflective membrane and photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209045573U (en) |
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2018
- 2018-09-10 CN CN201821480383.7U patent/CN209045573U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230519 Address after: No. 99, Tongren Road, Nantong Economic and Technological Development Zone, Jiangsu Province, 226015 Patentee after: ZHONGTIAN PHOTOVOLTAIC MATERIALS Co.,Ltd. Address before: 226009 No. 3 Tiantian Road, Nantong Development Zone, Jiangsu Province Patentee before: ZHONGTIAN TECHNOLOGY ADVANCED MATERIALS Co.,Ltd. Patentee before: JIANGSU ZHONGTIAN TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |