CN207690814U - A kind of light total reflection film of photovoltaic module - Google Patents
A kind of light total reflection film of photovoltaic module Download PDFInfo
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- CN207690814U CN207690814U CN201721698420.7U CN201721698420U CN207690814U CN 207690814 U CN207690814 U CN 207690814U CN 201721698420 U CN201721698420 U CN 201721698420U CN 207690814 U CN207690814 U CN 207690814U
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- total reflection
- photovoltaic module
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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
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Abstract
The utility model relates to a kind of light total reflection films of photovoltaic module, are applied to photovoltaic art.A kind of light total reflection film of photovoltaic module includes adhesive layer, basal layer, structure sheaf, reflective layer, the basal layer is located on adhesive layer, structure sheaf is located above basal layer, the structure sheaf includes pedestal and multiple micro-structures arranged in parallel above pedestal, the bottom surface arrangement form plane of micro-structure, the reflective layer is arranged in micro-structure, and the plane of the bottom surface arrangement form of the micro-structure is directly fitted with pedestal.The base angle of section isosceles trapezoid is crossed using tetragonous rod structure and optimized to the utility model, can be easier to deposition reflective layer and sun light utilization efficiency is made to maximize, to improve the qualification rate of product and the phototranstormation efficiency of photovoltaic module.
Description
Technical field
The utility model relates to a kind of light total reflection films of photovoltaic module, are applied to photovoltaic art.
Background technology
With the development of economy, demand of the people to the energy rapidly increases, and the increasingly depleted of traditional fossil energy and
A series of environmental pollutions caused by it drive people and look for High-efficiency Sustainable and the more clean energy, and solar energy
It is exactly a kind of extraordinary selection.People are exactly photovoltaic generation to the main Land use systems of solar energy at present, and improve photovoltaic group
The generating efficiency of part is the most important thing of current photovoltaic art.
The composition of conventional photovoltaic assemblies is followed successively by preceding glass sheet from top to bottom, encapsulates glue-line, and cell piece encapsulates glue-line and the back of the body
Plate（Or glass）.The welding that 2 ~ 3 width are 2 ~ 3mm can be covered on wherein every cell piece, it can be cell piece by welding
It is together in series, welding accounts for about the surface area of entire component 2 ~ 3%, and the sunlight for being incident on welding region can not be by cell piece
Directly absorb.Sunlight passes through the diffusing reflection of welding surface, reflected light glass and Air Interface be reflected into again on cell piece from
And be absorbed and used, and this utilization ratio is very inefficient.
Invention content
The utility model aim is that place provides a kind of light total reflection film of photovoltaic module against the above deficiency, is a kind of
It can be bonded to the light total reflection film for being used for photovoltaic module on welding, pass through preferred quadrangular micro-structure and section isosceles ladder
The base angle of shape optimizes, and can reduce metallic reflective layer deposition difficulty and maximally utilize the sun for impinging perpendicularly on welding region
Light improves the utilization ratio of photovoltaic module.
A kind of light total reflection film of photovoltaic module is that following technical scheme is taken to realize：
A kind of light total reflection film of photovoltaic module includes adhesive layer, basal layer, structure sheaf and reflective layer.Adhesive layer is used for
The light total reflection film is fixed to photovoltaic module welding strip region.Basal layer is located above adhesive layer, is used to support structure sheaf.It is described
Structure sheaf be located above basal layer.
The structure sheaf includes pedestal and multiple micro-structures arranged in parallel above pedestal, microstructured ar-rangement side
To non-perpendicular with light total reflection film product length direction.Micro-structure is horizontal four-prism, and four-prism section is isosceles trapezoid,
The adjacent trapezoidal bottom edge hand tail of four-prism section is connected.The isosceles trapezoid height is 10-30 μm, and base angle is 20.9 ° ~ 30 °,
Both aluminium reflective layer deposition difficulty can have been reduced, reflected light can also have been met, total reflection occurs with Air Interface in glass and is propagating
It will not be stopped in the process by adjacent microstructures, to maximally utilize the sunlight for impinging perpendicularly on welding region.
The bottom surface arrangement form plane of micro-structure, the reflective layer are arranged in micro-structure, the bottom of the micro-structure
The plane of face arrangement form is directly fitted with pedestal.
A kind of light total reflection film reasonable design of photovoltaic module, compact-sized, being one kind can be bonded on welding and use
In the light total reflection film of photovoltaic module, optimized by the base angle of preferred quadrangular micro-structure and section isosceles trapezoid, it can be with
It reduces metallic reflective layer deposition difficulty and maximally utilizes the sunlight for being incident on welding region, improve component to irradiation to weldering
Region sun light utilization ratio, and then 1% ~ 2% power of component is improved, to improve one class of component.
Description of the drawings
Illustrate the technical solution of the utility model in order to clearer, preferred embodiment is carried out below in conjunction with attached drawing detailed
Thin specific description, so that any technical staff in the art can be used or utilize the utility model.
Fig. 1 is a kind of light total reflection membrane structure diagram of photovoltaic module.
Fig. 2 is a kind of schematic diagram 1 of the micro-structure section isosceles trapezoid base angle selection of the light total reflection film of photovoltaic module.
Fig. 3 is a kind of schematic diagram 2 of the kidney-shapeds base angles such as the micro-structure section of light total reflection film of photovoltaic module selection.
The title of number and the corresponding component represented by letter in figure：
1, adhesive layer；2, basal layer；3, structure sheaf；31, pedestal；32, micro-structure；4, reflective layer；5, sunlight；6, empty
Gas；7, glass；8, hot melt adhesive EVA；9, light total reflection film；10, welding；11, cell piece；12, reflection light；13, total reflection light
Line.
Specific implementation mode
With reference to attached drawing 1-3, a kind of light total reflection film of photovoltaic module includes adhesive layer 1, basal layer 2, structure sheaf 3 and anti-
Photosphere 4.Adhesive layer 1 is used to the light total reflection film be fixed to photovoltaic module welding strip region.Basal layer 2 is located at 2 top of adhesive layer,
It is used to support structure sheaf 3.Structure sheaf 3 is located above basal layer.
The structure sheaf 3 includes pedestal 31 and multiple micro-structures 32 arranged in parallel above pedestal, micro-structure
32 orientations and light total reflection film product length direction are non-perpendicular.Micro-structure 32 is horizontal four-prism, four-prism section
For isosceles trapezoid, the adjacent trapezoidal bottom edge hand tail of four-prism section is connected.The isosceles trapezoid height is 10-30 μm, base angle
It is 20.9 ° ~ 30 °, can have both reduced aluminium reflective layer deposition difficulty, reflected light can also be met and occurred entirely in glass and Air Interface
It reflects and will not be stopped by adjacent microstructures in communication process, welding region is impinged perpendicularly on to maximally utilize
Sunlight.
The micro-structure（32）Bottom surface arrangement form plane, the reflective layer（4）It is arranged in micro-structure（32）On,
The micro-structure（32）Bottom surface arrangement form plane and pedestal（31）It directly fits.
The adhesive layer（1）To heat EVA.
The structure sheaf 3 is epoxy acrylate, polyester acrylate, urethane acrylate, poly terephthalic acid
Ethylene glycol fat（PET）Or polyvinyl chloride（PVC）Material.
The adhesive layer（1）Thickness be 10-50 μm.
The basal layer（2）For one kind in epoxy acrylate, polyester acrylate, urethane acrylate or more
Kind.
The basal layer（2）Thickness be 50-150 μm.
The reflective layer（4）Thickness is 50-150nm.
The reflective layer（4）It aluminizes to be evaporated in vacuo.
The micro-structure（32）It is horizontal four-prism.
The four-prism section is isosceles trapezoid, and isosceles trapezoid bottom edge hand tail is connected, and is located on the same line.
The isosceles trapezoid height is 10-30 μm, and base angle is 20.9 ° ~ 30 °；The bond length of the isosceles trapezoid
For 1-5um, long side length 40-80um.
Embodiment 1
A kind of light total reflection film 9 of photovoltaic module, structure is as shown in Fig. 1, including adhesive layer 1, basal layer 2, structure
Layer 3（Including pedestal 31, micro-structure 32）With reflective layer 4.Adhesive layer 1 is located at bottom, and basal layer 2 is located at 1 top of adhesive layer, structure
Layer 3 is located above basal layer, and 3 top of structure sheaf is equipped with reflective layer 4.Structure sheaf 3 includes pedestal 31 and micro-structure 32.Micro-structure 32
It is made of multiple parallel horizontal four-prisms, four-prism section is isosceles trapezoid, the adjacent trapezoidal bottom edge of four-prism section
It joins end to end and is located on the same line.
Wherein the thickness of adhesive layer 1 is 10um, and 2 thickness of basal layer is 70um, the isosceles of micro-structure 32 in preferred structure layer 3
Trapezoidal bond length is 1um, can uniformly deposit reflective layer 4 in this way（It aluminizes）, light leakage phenomena is avoided, micro-structure 32 is reduced
The risk being destroyed；The long side length of isosceles trapezoid is 40um, in the light total reflection film width for determining base angle and photovoltaic module
In the case of, the number of trapezoidal height and micro-structure quadrangular thereby determines that.32 height of micro-structure is 10um, reflective layer simultaneously
For metallic aluminum, thickness 40nm is high-purity by vacuum evaporation（99.9%）The mode of aluminium is made.
In order to improve the reflection efficiency of sunlight, the preferably base angle of four-prism section isosceles trapezoid is 20.9 °.Light is all-trans
Light film 9 is bonded on welding 10, when the sunlight 5 perpendicular to photovoltaic module incidence shines the light total reflection film 9 of photovoltaic module
On, as shown in Fig. 2, after the reflective layer 4 of 9 outer layer of light total reflection film is by mirror-reflection, it can just be in glass 7 and 6 boundary of air
Total reflection, angle of total reflection θ are realized at faceTIRBy being calculated as 41.8 °, so as to so that this part light can full illumination to electricity
On pond piece 11, reduce loss of light propagation, corresponding to critical angle α to be obtained by calculation be 20.9 °.
Embodiment 2
A kind of light total reflection film 9 of photovoltaic module, structure is as shown in Fig. 1, including adhesive layer 1, basal layer 2, structure
Layer 3（Including pedestal 31, micro-structure 32）With reflective layer 4.Adhesive layer 1 is located at bottom, and basal layer 2 is located at 1 top of adhesive layer, structure
Layer 3 is located above basal layer, and reflective layer 4 is contained at top.Structure sheaf 3 includes pedestal 31, micro-structure 32.Micro-structure 32 is by multiple flat
Capable horizontal four-prism composition, four-prism section is isosceles trapezoid, and the adjacent trapezoidal bottom edge of four-prism section joins end to end
And it is located on the same line.
Wherein the thickness of adhesive layer 1 is 10um, and 2 thickness of basal layer is 70um, preferably, micro-structure in structure sheaf 3
The bond length of 32 isosceles trapezoid is 1um, can uniformly deposit reflective layer 4 in this way（It aluminizes）, light leakage phenomena is avoided, is reduced
The risk that micro-structure 32 is destroyed；Preferably, the long side length of isosceles trapezoid be 60 μm, at this time ultra-violet curing glue quantity compared with
It is few, material is saved, the pollution to environment is avoided.32 height of micro-structure is 10um simultaneously, and reflective layer is metallic aluminum, and thickness is
40nm, it is high-purity by vacuum evaporation（99.9%）The mode of aluminium is made.
On the light total reflection film 9 of solar irradiation perpendicular to photovoltaic module incidence to photovoltaic module, such as attached drawing 3, warp
After reflective layer 4 is by mirror-reflection, reflection light 12 can just be parallel with adjacent ribs cylinder, to can avoid adjacent prism face
The effect of blocking to reflected light so that total reflection light 13 travels on cell piece 11 after whole reflected lights realize total reflection, to
Maximally utilize sunlight, corresponding to critical angle α be 30 °.
Embodiment 3
A kind of light total reflection film of photovoltaic module, it is contemplated that error when micro-structure makes in actual production, base angle
Optimal selection is 25 °.In view of mold causes micro-structure base angle to increase using protrusion generation abrasion for a long time in production process
The problem of, in the case where base angle is still less than 30 °, the slightly abrasion of mold can't influence the light total reflection film of photovoltaic module
Reflecting effect, can prolong the service life, to reduce production cost.
To the above preferred embodiment, those skilled in the art, can on the basis of not departing from the utility model principle
With various modification can be adapted or transformation.It should be appreciated that the embodiment enumerated in specification is only preferred embodiment, and it is not all
Embodiment.Those skilled in the art make the embodiment of the present disclosure and Structure Figure under the premise of no creative work each
Kind modification or transformation, all belong to the protection domain of the disclosure.
Claims (10)
1. a kind of light total reflection film of photovoltaic module, it is characterised in that：Including adhesive layer, basal layer, structure sheaf and reflective layer；
The basal layer is located on adhesive layer, and structure sheaf is located above basal layer；The structure sheaf include pedestal and be located at pedestal
Multiple micro-structures arranged in parallel of top, the bottom surface arrangement form plane of micro-structure, the reflective layer are arranged in micro-structure
On, the plane of the bottom surface arrangement form of the micro-structure is directly fitted with pedestal.
2. a kind of light total reflection film of photovoltaic module according to claim 1, it is characterized in that：The adhesive layer is heat
Melten gel EVA.
3. a kind of light total reflection film of photovoltaic module according to claim 1, it is characterized in that：The thickness of the adhesive layer
Degree is 10-50 μm.
4. a kind of light total reflection film of photovoltaic module according to claim 1, it is characterized in that：The structure sheaf is ring
Oxypropylene acid esters, polyester acrylate, urethane acrylate, polyethylene terephthalate（PET）Or polyvinyl chloride
（PVC）Material；
The basal layer is one or more in epoxy acrylate, polyester acrylate, urethane acrylate.
5. a kind of light total reflection film of photovoltaic module according to claim 1, it is characterized in that：The thickness of the basal layer
Degree is 50-150 μm.
6. a kind of light total reflection film of photovoltaic module according to claim 1, it is characterized in that：The reflective layer thickness
For 50-150nm.
7. a kind of light total reflection film of photovoltaic module according to claim 1, it is characterized in that：The reflective layer is true
Empty evaporation plating aluminium.
8. a kind of light total reflection film of photovoltaic module according to claim 1, it is characterized in that：The micro-structure is horizontal
The four-prism set.
9. a kind of light total reflection film of photovoltaic module according to claim 8, it is characterized in that：The four-prism is disconnected
Face is isosceles trapezoid, and isosceles trapezoid bottom edge hand tail is connected, and is located on the same line.
10. a kind of light total reflection film of photovoltaic module according to claim 9, it is characterized in that：The isosceles trapezoid
Height is 10-30 μm, and base angle is 20.9 ° ~ 30 °；The bond length of the isosceles trapezoid is 1-5um, long side length 40-
80um。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721698420.7U CN207690814U (en) | 2017-12-08 | 2017-12-08 | A kind of light total reflection film of photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721698420.7U CN207690814U (en) | 2017-12-08 | 2017-12-08 | A kind of light total reflection film of photovoltaic module |
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| Publication Number | Publication Date |
|---|---|
| CN207690814U true CN207690814U (en) | 2018-08-03 |
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ID=62996608
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721698420.7U Active CN207690814U (en) | 2017-12-08 | 2017-12-08 | A kind of light total reflection film of photovoltaic module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108022997A (en) * | 2017-12-08 | 2018-05-11 | 中天科技精密材料有限公司 | A kind of light total reflection film of photovoltaic module |
-
2017
- 2017-12-08 CN CN201721698420.7U patent/CN207690814U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108022997A (en) * | 2017-12-08 | 2018-05-11 | 中天科技精密材料有限公司 | A kind of light total reflection film of photovoltaic module |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230625 Address after: No.99 Tongren Road, Nantong Development Zone, Jiangsu Province, 226015 Patentee after: ZHONGTIAN PHOTOVOLTAIC MATERIALS Co.,Ltd. Address before: 226009 No. 3 Zhongtian Road, Nantong economic and Technological Development Zone, Jiangsu Patentee before: ZHONGTIAN TECHNOLOGY ADVANCED MATERIALS Co.,Ltd. Patentee before: JIANGSU ZHONGTIAN TECHNOLOGY Co.,Ltd. |