CN208315576U - Multistage enhancing gain film for photovoltaic module string spacing, piece spacing and welding - Google Patents
Multistage enhancing gain film for photovoltaic module string spacing, piece spacing and welding Download PDFInfo
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- CN208315576U CN208315576U CN201820518212.2U CN201820518212U CN208315576U CN 208315576 U CN208315576 U CN 208315576U CN 201820518212 U CN201820518212 U CN 201820518212U CN 208315576 U CN208315576 U CN 208315576U
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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 proposes a kind of multistage enhancing gain films for photovoltaic module string spacing, piece spacing and welding, comprising: gum layer, the gum layer are EVA hot-melt adhesive layer；Substrate, the substrate are PET base material, and the substrate is located at the upper surface of described gum layer；Multistage enhancing microprism layer, the multistage enhancing microprism layer is to have microprism array or pyramid array composed by the microprism layer of different refractivity or both common existing composite array between any two, the multistage enhancing microprism layer is set to the upper surface of described substrate, and the crest line direction of the microprism and the length substrate direction are arranged at 0 °~180 ° angles；Reflective layer, the reflective layer are set to the outer surface of the multistage enhancing microprism layer；Insulating layer, the insulating layer are set to the outer surface of the reflective layer.A kind of multistage enhancing gain film for photovoltaic module string spacing, piece spacing and welding according to the present utility model, can carry out multistage enhancing reflection to light.
Description
Technical field
It is especially a kind of for photovoltaic module string spacing, piece spacing and welding the utility model relates to a kind of gain film
Multistage enhancing gain film.
Background technique
In photovoltaic module, cell piece typesetting, be laid out, avoid short circuit, avoid breakdown etc. due to, the piece of cell piece
It inevitably has and is left white with piece (between piece) and string and string (between string), the sunray of this partial region is in current component
It can not be utilized or utilization rate is very low, to waste the area that can carry sunlight incidence valuable in component.
In the patent document that publication No. is CN107359215A, we have issued for a kind of between photovoltaic module string
Away from the gain film with piece spacing, the structure of gain film uses the microprism or tetrahedron of homogeneity, and structure is relatively simple, to light
The reflectivity promotion of line is limited, and the structure of gain film certainly will need further innovative design.
In addition, photovoltaic welding belt is applied to the conductive connection between cell piece in photovoltaic module, the weight for collecting electronics is played
It acts on.However welding surface is coated with tin layers, when sun light direct beam is to bright tin surface, photon will be directly mirrored out
Component, therefore this part sunlight cannot be utilized by solar panel, reduce the output power of component.There is part currently on the market
Design has striated structure to sunlight reflection on welding surface, but welding substrate is copper material striated structure hardly possible in processing
To accomplish microstructure, reflective surface is unsatisfactory, Tu Xihou, easily causes tin thickness uneven, easily causes the fragment of cell piece,
Tin raw material price is high simultaneously, blocked up, causes serious waste.
In the patent document of publication No. CN103413861A, CN106449842A, although disclosing for photovoltaic module
Light reflecting membrane, but their structure is the microprism or tetrahedron of homogeneity, structure is relatively simple, the reflection to light
Rate promotion is limited, and the structure of gain film certainly will need further innovative design.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.
For this purpose, a purpose of the utility model is to propose one kind for photovoltaic module string spacing, piece spacing and welding
Multistage enhancing gain film, multistage enhancing reflection can be carried out to light.
A kind of multistage enhancing gain film for photovoltaic module string spacing, piece spacing and welding according to the present utility model,
Include:
Gum layer, the gum layer are EVA hot-melt adhesive layer；
Substrate, the substrate are PET base material, and the substrate is located at the upper surface of described gum layer；
Multistage enhancing microprism layer, the multistage enhancing microprism layer are microprism between any two with different refractivity
Microprism array or pyramid array composed by layer or both common existing composite array, the multistage enhancing microprism
Layer is set to the upper surface of described substrate, and the crest line direction of the microprism is set with the length substrate direction at 0 °~180 ° angles
It sets；
Reflective layer, the reflective layer are set to the outer surface of the multistage enhancing microprism layer；
Insulating layer, the insulating layer are set to the outer surface of the reflective layer.
Advantageously, the crest line direction of the microprism and length substrate direction angulation are 15 °~65 °.
Advantageously, the crest line direction of the microprism and length substrate direction angulation are preferably 45 °
Advantageously, the prism vertex angle angle of the microprism is 60 °~150 °.
Advantageously, the prism vertex angle angle of the microprism is preferably 120 °.
Advantageously, the prism bases width of the microprism is 50 μm, and the microprism layer is ultraviolet made of UV solidification
Solidify glue-line, the reflective layer is plating aluminium alloy.
Advantageously, the number of plies of the multistage enhancing microprism layer is 2-10 layers.
Advantageously, the number of plies of the multistage enhancing microprism layer is 3 layers.
Advantageously, in the multistage enhancing microprism layer high-molecular organic material be polymethyl methacrylate (PMMA),
Polystyrene (PS), polycarbonate (PC), polyethylene propylene nitrile copolymer (SAN), poly- 4- methylpentene (TPX) or organosilicon material
Material.
Advantageously, the refractive index of optical material successively reduces from top to bottom in the multistage enhancing microprism layer.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
Fig. 1 is the multistage enhancing micro-prism structure schematic diagram of the utility model.
Fig. 2 is a kind of structural representation of the embodiment for the gain film that the utility model has multistage enhancing micro-prism structure
Figure.
Fig. 3 is the utility model while a kind of embodiment with microprism array and pyramid array gain film
Structural schematic diagram.
Fig. 4 is a kind of structural schematic diagram for embodiment that the utility model has pyramid array gain film.
The title of number and corresponding component represented by letter in figure:
1- multistage enhances the optical material A in microprism layer；2- multistage enhances the optical material B in microprism layer；3- is more
Optical material C in grade enhancing microprism layer；4- gum layer；5- substrate；6- multistage enhances microprism layer；7- reflective layer；8- gold
Word tower.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
Below with reference to the accompanying drawings come be described in detail it is according to the present utility model it is a kind of for photovoltaic module string spacing, piece spacing and
The multistage enhancing gain film of welding.
As shown in Figures 1 to 4, according to the present utility model a kind of for photovoltaic module string spacing, piece spacing and welding
Multistage enhancing gain film, comprising: gum layer 4, substrate 5, multistage enhancing microprism layer 6, reflective layer 7, insulating layer (not shown).
Gum layer 4 is EVA hot-melt adhesive layer；
Substrate 5 is PET base material, and substrate 5 is located at the upper surface of gum layer 4；
Multistage enhancing microprism layer 6 is to have microprism array composed by the microprism layer of different refractivity between any two
Or pyramid array or both common existing composite array, multistage enhancing microprism layer 6 is set to the upper surface of substrate 5, described
The crest line direction of microprism and the length substrate direction are arranged at 0 °~180 ° angles；
Reflective layer 7 is set to the outer surface of multistage enhancing microprism layer 6；
The insulating layer is set to the outer surface of reflective layer 7.
As shown in Figure 1, in a kind of embodiment of the utility model are as follows: multistage enhancing microprism layer 6 designs 3 layers altogether, packet
Include the optical material A in multistage enhancing microprism layer；2- multistage enhances the optical material B in microprism layer；The enhancing of 3- multistage is micro-
The refractive index of optical material tri- kinds of optical materials of C, A, B and C in prism layer is sequentially reduced；
Beneficial effect by adopting the above technical scheme is: not initially entering tool by the light that reflecting layer is reflected in sunlight
There is the optical material A of high refractive index, becomes smaller compared to refraction angle for homogeneous material, then light is again introduced into medium refractive index
Optical material B, refraction angle further decrease or even cannot reflect, and light is totally reflected, and optical material B will be further
Increase the probability of total reflection, light is reflected again after adjacent prismatic reflection layer, improves the reflectivity of light.
In other words, multistage enhancing microprism layer 6 is sensu lato structure, is passed through it includes micro-prism structure, by microprism
The obtained microprism array of V-groove or pyramid structure and the two existing composite construction jointly are set；The rib of microprism
Line direction and the length substrate direction are arranged at 0 °~180 ° angles, i.e. crest line direction and the length substrate direction can group
At any angle；Multistage enhancing microprism layer 6 is made of the material of multilayer different refractivity, the material with different refractivity
For transparent organic polymer material.
Advantageously, the crest line direction of the microprism and length substrate direction angulation are 15 °~65 °.Further,
The crest line direction of the microprism and length substrate direction angulation are preferably 45 °.
Advantageously, the prism vertex angle angle of the microprism is 60 °~150 °.Further, the prism of the microprism
Corner angle is preferably 120 °.
Advantageously, the prism bases width of the microprism is 50 μm.As a result, under the guarantee of Mold Making ability, carefully
Change micro-structure, can preferably recycle incident ray.
Advantageously, the microprism layer is ultra-violet curing glue-line made of UV solidification, and the reflective layer is plating aluminium alloy.
As shown in Fig. 2, in a kind of embodiment of the utility model are as follows: a kind of gain film on photovoltaic module welding strip
Including gum layer 4；Substrate 5；Multistage enhancing microprism layer 6；Reflective layer 7, insulating layer (not shown), gum layer 4 are set under substrate 5
Surface, multistage enhancing microprism layer 6 is 3 layers of microprism array, and set on the upper surface of substrate 5, reflective layer 7 is covered in microprism layer
6 surfaces, the crest line direction and length substrate direction of microprism are arranged at 15 °~65 ° angles, and the reflective layer is covered in described micro-
Prism layer surface, the insulating layer are set to 4 upper surface of reflective layer.
Advantageously, the number of plies of multistage enhancing microprism layer 6 is 2-10 layers, preferably 3 layers.Advantageously, multistage to enhance micro- rib
High-molecular organic material is polymethyl methacrylate (PMMA), polystyrene (PS), polycarbonate (PC), poly- second in mirror layer 6
Alkene acrylonitrile copolymers (SAN), poly- 4- methylpentene (TPX), organosilicon material etc..Advantageously, in multistage enhancing microprism layer 6
Every layer all has the refractive index different from other layer, and refractive index optical material of different sizes can be optionally combined.Advantageously, more
Preferably combination is that the refractive index of optical material from top to bottom successively reduces in grade enhancing microprism layer 6.
Beneficial effect by adopting the above technical scheme is: the crest line direction and length substrate direction of the microprism are angled
Setting, can increase the area of reflecting surface, so that the light reflected is reached greater area of cell piece surface and recycled,
The efficiency of light energy utilization is improved, the output power of photovoltaic module is increased.The insulating layer is set to reflective layer upper surface, can increase reflective
The reflecting effect of layer, and play insulation effect.3 layers of microprism array can improve reflection by changing the refractive index of light
Rate, and then improve the photoelectric conversion efficiency of entire photovoltaic module.
As shown in figure 3, larger increasing reflective area in other embodiments of the utility model in order to reach
Purpose, microstructure design are the composite construction of multistage microprism and pyramid.Beneficial effect by adopting the above technical scheme is:
For the incident angles of sunlight of the different moments in different latitude area and Same Latitude area, changes will occur, in multistage
Compound some pyramid structures can adjust the reflectivity to light at different latitude and moment in microprismatic structure, by optimization
After can find optimal composite design.
As shown in figure 4, further increasing effective reflecting surface in other embodiments of the utility model in order to reach
With the purpose of versatility, multistage enhancing microprism layer 6 becomes pyramid, pyramidal bottom edge by the way that setting is poly-V-grooved
Direction and the microprism base vertical.Beneficial effect by adopting the above technical scheme is: reflecting surface becomes microstructure unit four
Face body, reflecting surface are effectively increased, and reflection light uniformly reaches cell piece surface after sheet glass is totally reflected.
In other embodiments of the utility model, in order to achieve the purpose that construct non-uniform reflection face, the gold word
Tower bottom hem width degree is 50 μm.Beneficial effect by adopting the above technical scheme is: it is consistent with prism dimensions, constitute uniform four sides
Body guarantees that light reflects homogeneity.
In other embodiments of the utility model, in order to make the purpose of multistage prism microstructure, the multistage
Enhancing microprism layer is ultra-violet curing glue-line made of multiple UV solidification.Beneficial effect by adopting the above technical scheme is: first making
Make corresponding from micro-structure different precision dies, first in substrate surface covering uv-curable glue, then in conjunction with precision die,
Microprism bottom is generated using UV curing technology, then, different precision dies is used instead and is generated by identical UV curing technology
The second layer has the structure of different refractivity, and so on, multistage micro-prism structure may finally be obtained.
It is described in order to achieve the purpose that reflective layer is at low cost, effect is good in other embodiments of the utility model
Reflective layer is plating aluminium alloy.Beneficial effect by adopting the above technical scheme is: obtained reflective layer is low in cost, reflecting effect
Good, corrosion resistance is strong.
In other embodiments of the utility model, in order to reach the mesh that gain film can be stable in conjunction with welding surface
, the gum layer is EVA hot-melt adhesive.Beneficial effect by adopting the above technical scheme is: it is at low cost, it is affixed on welding surface side
Just, securely.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure
Or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model
System.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or more in the description of the present invention, remove
It is non-separately to have clearly specific restriction.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
It inside makes changes, modifications, substitutions and variations to the above described embodiments, each falls within the protection scope of the utility model.
Claims (9)
1. a kind of multistage enhancing gain film for photovoltaic module string spacing, piece spacing and welding characterized by comprising
Gum layer, the gum layer are EVA hot-melt adhesive layer；
Substrate, the substrate are PET base material, and the substrate is located at the upper surface of described gum layer；
Multistage enhancing microprism layer, the multistage enhancing microprism layer is between any two with the microprism layer institute of different refractivity
The microprism array or pyramid array of composition or both common existing composite array, the multistage enhancing microprism layer are set
In the upper surface of described substrate, the crest line direction of the microprism and the length substrate direction are arranged at 0 °~180 ° angles；
Reflective layer, the reflective layer are set to the outer surface of the multistage enhancing microprism layer；
Insulating layer, the insulating layer are set to the outer surface of the reflective layer；
The refractive index of optical material successively reduces from top to bottom in the multistage enhancing microprism layer.
2. the multistage enhancing gain film according to claim 1 for photovoltaic module string spacing, piece spacing and welding, special
Sign is that the crest line direction of the microprism and length substrate direction angulation are 15 °~65 °.
3. the multistage enhancing gain film according to claim 2 for photovoltaic module string spacing, piece spacing and welding, special
Sign is that the crest line direction of the microprism and length substrate direction angulation are preferably 45 °.
4. the multistage enhancing gain film according to claim 1 for photovoltaic module string spacing, piece spacing and welding, special
Sign is that the prism vertex angle angle of the microprism is 60 °~150 °.
5. the multistage enhancing gain film according to claim 4 for photovoltaic module string spacing, piece spacing and welding, special
Sign is that the prism vertex angle angle of the microprism is preferably 120 °.
6. the multistage enhancing gain film according to claim 1 for photovoltaic module string spacing, piece spacing and welding, special
Sign is that the prism bases width of the microprism is 50 μm, and the microprism layer is ultra-violet curing glue-line made of UV solidification,
The reflective layer is plating aluminium alloy.
7. the multistage enhancing gain film according to claim 1 for photovoltaic module string spacing, piece spacing and welding, special
Sign is that the number of plies of the multistage enhancing microprism layer is 2-10 layers.
8. the multistage enhancing gain film according to claim 7 for photovoltaic module string spacing, piece spacing and welding, special
Sign is that the number of plies of the multistage enhancing microprism layer is 3 layers.
9. the multistage enhancing gain film according to claim 1 for photovoltaic module string spacing, piece spacing and welding, special
Sign is that high-molecular organic material is polymethyl methacrylate (PMMA), polystyrene in the multistage enhancing microprism layer
(PS), polycarbonate (PC), polyethylene propylene nitrile copolymer (SAN), poly- 4- methylpentene (TPX) or organosilicon material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820518212.2U CN208315576U (en) | 2018-04-12 | 2018-04-12 | Multistage enhancing gain film for photovoltaic module string spacing, piece spacing and welding |
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| CN201820518212.2U CN208315576U (en) | 2018-04-12 | 2018-04-12 | Multistage enhancing gain film for photovoltaic module string spacing, piece spacing and welding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108538950A (en) * | 2018-04-12 | 2018-09-14 | 善仁（浙江）新材料科技有限公司 | Multistage enhancing gain film for photovoltaic module string spacing, piece spacing and welding |
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2018
- 2018-04-12 CN CN201820518212.2U patent/CN208315576U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108538950A (en) * | 2018-04-12 | 2018-09-14 | 善仁（浙江）新材料科技有限公司 | Multistage enhancing gain film for photovoltaic module string spacing, piece spacing and welding |
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