CN109830560A - A kind of backboard of solar cell module - Google Patents
A kind of backboard of solar cell module Download PDFInfo
- Publication number
- CN109830560A CN109830560A CN201910024051.0A CN201910024051A CN109830560A CN 109830560 A CN109830560 A CN 109830560A CN 201910024051 A CN201910024051 A CN 201910024051A CN 109830560 A CN109830560 A CN 109830560A
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- layer
- backboard
- pattern
- ultraviolet absorber
- solar cell
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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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- Photovoltaic Devices (AREA)
Abstract
The invention discloses a kind of backboards of solar cell module.The backboard includes substrate, and the pattern layer containing ultraviolet absorber on the inner surface of the substrate with predetermined pattern is arranged in.Backboard provided by the invention on the inner surface of substrate by being arranged the pattern layer containing ultraviolet absorber, so that the backboard has good UVResistant effect, is conducive to promote solar cell module power.
Description
Technical field
The invention belongs to technical field of solar batteries, and in particular to a kind of backboard of solar cell module.
Background technique
Currently, the basic structure of crystal silicon solar batteries component successively includes face glass, upper layer encapsulating material, cell piece
Layer, lower layer's encapsulating material and backboard or back glass, wherein common backboard is the polymer composite layer of white.The polymer
Composite layer is made of outer layer, middle layer and internal layer, and bonding is wherein equipped between outer layer and middle layer and middle layer and internal layer
Material.In the market, solar cell backboard is broadly divided into fluorine-containing backboard and not fluorine-containing backboard two major classes.Wherein fluorine-containing backboard divides again
(such as TPT, KPK, KPF, wherein first letter represents outer layer to double-side fluorine, and medial represents middle layer, the last letter
Represent internal layer) with single side it is fluorine-containing (such as TPE, KPE, KPO, wherein first letter represents outer layer, and medial represents middle layer,
The last letter represents internal layer) two kinds, wherein T refers to that polyvinyl fluoride (PVF) film, K refer to that Kynoar (PVDF) is thin
Film, F are fluoro coatings resinous coat；P refers to the pet film (BOPET) of biaxial tension；E refers to that polyethylene is thin
Film or ethylene-vinyl acetate resin (EVA), O are polyolefin resins.Mostly being then without fluorine-containing backboard will by using adhesive
Multilayer PET or PA gluing are combined.
But existing backboard uvioresistant performance is poor.
Summary of the invention
The purpose of the present invention is to provide a kind of backboards of the good solar cell module of UVResistant effect.
To achieve the goals above, the present invention provides following technical scheme.
A kind of backboard of solar cell module, the backboard include substrate, and the inside table of the substrate is arranged in
With the pattern layer containing ultraviolet absorber of predetermined pattern on face.
Optionally, the solar cell module successively includes face glass, upper layer encapsulating material, battery lamella, lower layer
Cell piece unshielede region in encapsulating material and backboard, the pattern of the pattern layer containing ultraviolet absorber and the battery lamella
The pattern in domain is adapted.
Optionally, the pattern in the pattern layer containing ultraviolet absorber is latticed or strip.
Optionally, on inner surface of the pattern layer containing ultraviolet absorber by the substrate is arranged in have it is described
The cured formation of the coating containing ultraviolet absorber of predetermined pattern.
In the present invention, coating containing ultraviolet absorber can be heat cure coating containing ultraviolet absorber, and preferably low-temperature setting is containing purple
Outer absorbent coating (solidification temperature is at 60 DEG C or less).When preparing the pattern layer containing ultraviolet absorber, according to containing ultraviolet absorber
The pattern of pattern layer will contain ultraviolet absorber coating and be coated on substrate inner surface, after making paint solidification containing ultraviolet absorber
Form the pattern layer containing ultraviolet absorber.
The modes such as web coatable, printing, spraying, coating can be used to be arranged on the inner surface of substrate containing ultraviolet absorber
Coating.
Conventional commercially available coating containing ultraviolet absorber can be selected in above-mentioned coating containing ultraviolet absorber, is further preferred that use
In the coating containing ultraviolet absorber on backboard, the coating containing ultraviolet absorber as disclosed in 107759983 A of patent CN etc..
Optionally, the substrate includes fluorine-containing outer layer, not fluorine-containing middle layer on the outer layer is arranged and sets
Internal layer on the middle layer is set, the pattern layer setting containing ultraviolet absorbing agent is on the inner layer；The outer layer and
Between the middle layer, adhesive layer is provided between the middle layer and the internal layer.
Optionally, the internal layer is fluorine-containing or not fluorine-containing.
Optionally, the internal layer covers the partial zones that all middle layer or the internal layer cover the middle layer
Domain.
Optionally, the internal layer has pattern identical with the pattern layer containing ultraviolet absorbing agent.
Optionally, the substrate is compounded to form by the not fluorine-containing polymer material layer of multilayer.
Technical effect
The invention has the following advantages:
(1) present invention makes the inside of backboard by the way that the pattern layer containing ultraviolet absorber is arranged on the inner surface of backboard
It is located at the cell piece unshielede region in the cell piece group of solar cell module with good uvioresistant performance, especially enhancing
The uvioresistant performance of backboard internal layer at the opposite position of domain reduces and turns yellow, realizes the maximization of component power；
(2) selection in the present invention about the material of the pattern layer containing ultraviolet absorber can be and directly adopt spraying, apply
The coating containing ultraviolet absorber that modes are arranged such as cover or print, through, containing the pattern layer of ultraviolet absorber, holding made from low-temperature setting
Easily realize.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.
Fig. 1 is the top view of solar photovoltaic assembly in embodiment 1-2；
Fig. 2 is the top view of solar photovoltaic assembly in embodiment 3；
Fig. 3 is the structural schematic diagram of solar photovoltaic assembly in embodiment 1-2；
Fig. 4 is the structural schematic diagram of solar photovoltaic assembly in embodiment 3；
Fig. 5 is the structural schematic diagram of the back panel of solar photovoltaic module of the pattern layer containing ultraviolet absorber in embodiment 1-2；
Fig. 6 is the structural schematic diagram of the back panel of solar photovoltaic module of the pattern layer containing ultraviolet absorber in embodiment 3；
Appended drawing reference in figure respectively indicates:
1 is outer layer；
2 be middle layer；
3 be internal layer；
31 be the pattern layer containing ultraviolet absorber；
4 be adhesive layer；
5 be face glass；
6 be upper layer encapsulating material；
7 be battery lamella；
8 be lower layer's encapsulating material；
9 be backboard；
10 be the cell piece in battery lamella；
11 be the cell piece non-occluded area in battery lamella.
Specific embodiment
Hereinafter, explaining embodiments of the present invention in detail.
Refer to after backboard is installed in solar cell module in the present invention, on the inside of backboard, backboard is towards cell piece
Side；It is understood that side of the backboard far from cell piece is the outside of backboard.
Fig. 1 shows a kind of structure of the backboard of solar cell module provided by the invention, as shown in Figure 1, the backboard
Including substrate, and the pattern layer 31 containing ultraviolet absorber on the inner surface of substrate with predetermined pattern is set.
In the backboard of solar cell module provided by the invention, setting contains ultraviolet absorber on the inner surface of substrate
Pattern layer, i.e., on the regional area of the inner surface of substrate setting have uvioresistant function material layer, pass through UV absorption
Agent absorbs ultraviolet light, reduces damage of the ultraviolet light to backboard other parts, enhances the uvioresistant performance on the inside of backboard, lifting assembly
Power.
Fig. 3 and Fig. 4 respectively illustrates the structure of solar cell module, as shown in Figure 3 and Figure 4, solar cell module
It successively include face glass 5, upper layer encapsulating material 6, battery lamella 7, lower layer's encapsulating material 8 and backboard 9.
In one possible implementation of the present invention, the pattern and battery lamella in the pattern layer 31 containing ultraviolet absorber
The pattern of the non-occluded area 11 of cell piece 10 in 7 is adapted, i.e. the battery lamella in the backboard 9 with solar cell module
In 10 non-occluded area of cell piece, 11 corresponding position backboard inner surface on be arranged the pattern layer 31 containing ultraviolet absorber.
It is understood that blocking due to cell piece 10, ultraviolet light can't be irradiated to the region that backboard is blocked by cell piece 10.
As shown in figure 5, the pattern of the pattern layer 31 containing ultraviolet absorber be it is latticed, the backboard be suitable for cell piece between
Pass through the solar cell module with certain interval between welding connection, cell piece.
As shown in fig. 6, the pattern of the pattern layer 31 containing ultraviolet absorber is strip, which is suitable for imbrication component, i.e.,
It is connected in the form of imbrication with adjacent cell piece in a string of battery strings, it is very close to each other between adjacent cell piece in same a string of battery strings,
There is gap between adjacent two strings battery strings.
Certainly, in the present invention, the pattern of the pattern layer 31 containing ultraviolet absorber is not limited to grid or strip, can be according to group
The setting of part type, pattern correspond to the region that the cell piece in battery lamella does not block.
In the present invention, the pattern layer 31 containing ultraviolet absorber can be preset by having on the inner surface of substrate is arranged in
The cured formation of the coating containing UV absorbers of pattern.
Coating containing UV absorbers can be heat cure coating containing ultraviolet absorber, preferably low-temperature setting (solidification temperature
60 DEG C or less) coating containing ultraviolet absorber.When preparing the pattern layer 31 containing ultraviolet absorber, according to the pattern containing ultraviolet absorber
Coating containing ultraviolet absorber is arranged in base the pattern (such as region 11 that cell piece 10 does not block in battery lamella) of layer 31
On the inner surface of bottom, the pattern layer 31 containing ultraviolet absorber is formed after making the paint solidification containing ultraviolet absorber.
The modes such as web coatable, spraying, coating, printing can be used to be arranged on the inner surface of substrate containing ultraviolet absorber
Coating.
It is understood that in addition to containing other than ultraviolet absorber in the coating containing ultraviolet absorber, also at least containing it is necessary to
Matrix resin.
The specific type present invention of ultraviolet absorber does not have considered critical, conventional ultraviolet absorber.It can be independent
Using a kind of ultraviolet absorber, can also be used in compounding with a variety of ultraviolet absorbers.For example, ultraviolet absorber can be following
One or more of combinations: ESCALOL 567,2-hydroxy-4-n-octoxybenzophenone, 2,4- dihydroxy
Base benzophenone, 2,2,4- trihydroxybenzophenone, 2- (2 '-hydroxyls -3 '-tert-butyl -5 '-aminomethyl phenyl) -5- chloro benzo
Triazole, 2- (2 '-hydroxyls -3 ', 5 '-di-t-butyls -5 '-aminomethyl phenyl) -5- chloro benzo triazole, 3- [3- (2-H- benzo
Triazole -2- base) -4- hydroxyl -5- tert-butyl-phenyl]-propionic acid-macrogol ester, 2- (2 '-hydroxyls -5 '-t-octyl)-benzo three
Azoles, 2,2 '-methylene-(6- (2H- benzotriazole) -4- t-octyl) phenol, 2- (2H- benzotriazole -2- base) -6- dodecane
Base -4- methylphenol, 2- (2 '-hydroxyls -5 '-t-octyl phenyl) benzotriazole, 2- (bis- (the 2,4- 3,5-dimethylphenyls) -1 of 4,6-,
3,5- triazine -2- base) -5- octyloxy phenol, 2- [4- [2- hydroxyl -3- tridecane epoxide propyl] oxygroup] -2- hydroxy phenyl] -4,
Bis- (2,4- the 3,5-dimethylphenyl) -1,3,5- triazines of 6-, 2- [4- [2- hydroxyl -3- dodecyloxy propyl] oxygroup] -2- hydroxy benzenes
Base] bis- (2,4- the 3,5-dimethylphenyl) -1,3,5- triazines of -4,6-.
Above-mentioned coating containing ultraviolet absorber can be the transparent or white coating containing ultraviolet absorber, so that backboard exists
The non-occluded area of cell piece has preferable uvioresistant performance.
Conventional commercially available coating containing ultraviolet absorber can be selected in coating containing ultraviolet absorber, is further preferred that for carrying on the back
Coating containing ultraviolet absorber on plate, coating containing ultraviolet absorber as disclosed in 107759983 A of patent CN etc..
In the present invention, as shown in Figure 1 and Figure 2, substrate may include: fluorine-containing outer layer 1, be arranged in it is not fluorine-containing on outer layer 1
Middle layer 2 and the internal layer 3 that is arranged in middle layer 2, the pattern layer 31 containing ultraviolet absorbing agent be arranged on internal layer 3；Outside
Between layer 1 and middle layer 2, adhesive layer 4 is provided between middle layer 2 and internal layer 3.
In the embodiment, the inner surface of internal layer 3 is the inner surface of substrate.
Outer layer 1 concretely the fluorine materials such as polyvinyl fluoride (PVF) film, Kynoar (PVDF) film formed it is thin
Film, the pet film (BOPET) of the concretely biaxial tension of middle layer 2, polyethylene film (PE) or
Person's polyamide film (PA).
Internal layer 3 can be fluorine-containing film, such as fluoroethylene film, vinylidene film etc., or not fluorine-containing
Film, such as polyethylene film, ethylene-vinyl acetate resin film or polyolefin resin film etc..
In the present invention, the internal layer 3 of substrate can cover whole middle layers 2 (as shown in Figure 1), can also only cover middle layer
2 regional area (as shown in Figure 2).In a kind of possible implementation, internal layer 3 has and the pattern layer 31 containing ultraviolet absorber
Identical pattern.
It, can be directly in existing double-side fluorine backboard for the backboard that the internal layer 3 of substrate covers whole middle layers 2
Or the pattern layer 31 containing ultraviolet absorber is set on the internal layer of the fluorine-containing backboard of single side.
It, can be first according to the preparation of existing backboard for the backboard that the internal layer 3 of substrate covers the regional area of middle layer 2
Technique prepares the laminated film of outer layer 1 and middle layer 2, later, the bonding internal layer 3 on the regional area of middle layer 2, then including
The pattern layer 31 containing ultraviolet absorber is prepared on layer 3.
In the present invention, substrate can also be compounded to form by the not fluorine-containing polymer material layer of multilayer, for example, multilayer PET film or
Person's multilayer PA film bond is formed.In the implementation, the pattern layer 31 containing ultraviolet absorber is set up directly on innermost layer not
Fluoro-containing macromolecule material layer surface.
In the present invention, the material of the adhesive layer 4 of each position is not limited strictly, as long as can glue backboard various pieces
It connects fixed.Such as it can be used and be bonded layer formula disclosed in the embodiment 1 to embodiment 5 of CN107759983A.
It is described further below by backboard of the specific embodiment to solar cell module provided by the invention.
Embodiment 1
As shown in Figure 1, the backboard of solar cell module provided in this embodiment includes substrate and is arranged in substrate
The pattern layer 31 containing ultraviolet absorber on side surface.
Wherein, substrate is the fluorine-containing TPE backboard of existing single side, i.e. substrate includes outer layer 1, the middle layer 2 on outer layer 1,
Internal layer 3 in middle layer 2 and it is arranged between outer layer 1 and middle layer 2, the adhesive layer 4 between middle layer 2 and internal layer 3,
Outer layer is polyvinyl fluoride thin film, and middle layer 2 is pet film, and internal layer 3 is polyethylene film.
Pattern layer 31 containing ultraviolet absorber is arranged on internal layer 3.
Pattern layer 31 containing ultraviolet absorber be by be printed on internal layer 3 with predetermined pattern containing ultraviolet absorber
Coating is formed through low-temperature setting.
The weather-proof layer formula recorded in the formula of the above-mentioned coating containing ultraviolet absorber such as 107759983 A of CN, specifically such as
Under (mass fraction)
Fluororesin 41088 (Changxing chemistry) 80%；Epoxy resin B 4010P (the beautiful sun of Mitsubishi) 5%；Mica powder is (rich
Red Chemical Co., Ltd.) 5%；Mixed etherificate polyhydroxymethyl melamine resin (Mao Jia chemical company) 9.99%；Ultraviolet absorber
2- (2- hydroxyl -3- tert-butyl -5- aminomethyl phenyl) -5- chloro benzo triazole (BASF Aktiengesellschaft) 0.006%；Light is stablized
Bis- (1- octyloxy -2,2,6,6- tetramethyl -4- piperidyl) sebacates of agent (TaiWan, China forever Optical Chemical Company) 0.001%；
Antioxidant triethylene glycol ether-two (3- tertiary butyl-4-hydroxy -5- aminomethyl phenyl) propionic ester (BASF Aktiengesellschaft) 0.003%.
Solidification temperature is 60 DEG C.
As shown in figure 3, the solar cell module successively includes face glass 5, upper layer encapsulating material 6, battery lamella
7, lower layer's encapsulating material 8 and backboard 9 are connected between the cell piece 10 in battery lamella 7 by welding, are had between cell piece 10
Gap.The pattern of the pattern layer 31 containing ultraviolet absorber and the non-occluded area 11 of the cell piece 10 in the battery lamella
Pattern be adapted, in as shown in Figure 5 latticed.
Embodiment 2
As shown in Figure 1, the backboard of solar cell module provided in this embodiment includes substrate and is arranged in substrate
The pattern layer 31 containing ultraviolet absorber on side surface.
Wherein, substrate is existing double-side fluorine TPT backboard, i.e. substrate includes outer layer 1, the middle layer 2 on outer layer 1,
Internal layer 3 in middle layer 2 and it is arranged between outer layer 1 and middle layer 2, the adhesive layer 4 between middle layer 2 and internal layer 3,
Outer layer is polyvinyl fluoride thin film, and middle layer 2 is pet film, and internal layer 3 is polyvinyl fluoride thin film.
Pattern layer 31 containing ultraviolet absorber is arranged on internal layer 3.
Pattern layer 31 containing ultraviolet absorber be by be sprayed on internal layer 3 with predetermined pattern containing ultraviolet absorber
Coating is formed through low-temperature setting.
The formula of the above-mentioned coating containing ultraviolet absorber is same as Example 1.
As shown in figure 3, the solar cell module successively includes face glass 5, upper layer encapsulating material 6, battery lamella
7, lower layer's encapsulating material 8 and backboard 9 are connected between the cell piece 10 in battery lamella 7 by welding, are had between cell piece 10
Gap.The pattern of the pattern layer 31 containing ultraviolet absorber and the non-occluded area 11 of the cell piece 10 in the battery lamella
Pattern be adapted, in as shown in Figure 5 latticed.
Embodiment 3
As shown in Fig. 2, the backboard of solar cell module provided in this embodiment includes substrate and is arranged in substrate
The pattern layer 31 containing ultraviolet absorber on side surface.
Wherein, substrate includes outer layer 1, the middle layer 2 on outer layer 1, internal layer 3 and setting in middle layer 2
Adhesive layer 4 between outer layer 1 and middle layer 2, between middle layer 2 and internal layer 3, internal layer 3 cover the regional area of middle layer 2,
The pattern of internal layer 3 is identical as the pattern layer 31 containing ultraviolet absorber.
Outer layer 1 is polyvinyl fluoride thin film, and middle layer 2 is pet film, and internal layer 3 is polyvinyl fluoride
Film.
Pattern layer 31 containing ultraviolet absorber is arranged on internal layer 3.
Pattern layer 31 containing ultraviolet absorber be by be printed on internal layer 3 with predetermined pattern containing ultraviolet absorber
Coating is formed through low-temperature setting.
The formula of coating in the present embodiment containing ultraviolet absorber is same as Example 1.
As shown in figure 4, the solar cell module successively includes face glass 5, upper layer encapsulating material 6, battery lamella
7, lower layer's encapsulating material 8 and backboard 9, the cell piece in battery lamella 7 are connected in the form of imbrication, with cell piece in a string of battery strings
Between it is very close to each other；The pattern of pattern and internal layer 3 in the pattern layer 31 containing ultraviolet absorber with the battery lamella
In the pattern of non-occluded area 11 of cell piece 10 be adapted, be in strip as shown in FIG. 6.
A part of specific embodiment is enumerated above, and the present invention will be described, it is necessary to which indicated herein is the above specific reality
It applies example and is served only for that the invention will be further described, do not represent limiting the scope of the invention.Other people are according to the present invention
The some nonessential modifications and adjustment made still fall within protection scope of the present invention.
Claims (9)
1. a kind of backboard of solar cell module, characterized in that the backboard includes substrate, and the substrate is arranged in
With the pattern layer (31) containing ultraviolet absorber of predetermined pattern on inner surface.
2. the backboard of solar cell module according to claim 1, it is characterized in that: the solar cell module is successively
It is described containing purple including face glass (5), upper layer encapsulating material (6), battery lamella (7), lower layer's encapsulating material (8) and backboard (9)
The pattern of the pattern layer (31) of outer absorbent is adapted with the pattern of cell piece non-occluded area in the battery lamella (7).
3. the backboard of solar cell module according to claim 2, it is characterized in that: the pattern containing ultraviolet absorber
Pattern in layer (31) is latticed or strip.
4. the backboard of solar cell module according to claim 1, it is characterized in that: the pattern containing ultraviolet absorber
The coating containing ultraviolet absorber with the predetermined pattern on inner surface of the layer (31) by the substrate is arranged in is cured
It is formed.
5. the backboard of solar cell module according to claim 1, characterized in that the substrate includes fluorine-containing outer layer
(1), the not fluorine-containing middle layer (2) being arranged on the outer layer (1) and the internal layer (3) being arranged on the middle layer (2),
The pattern layer (31) containing ultraviolet absorbing agent is arranged on the internal layer (3)；The outer layer (1) and the middle layer (2)
Between, adhesive layer (4) are provided between the middle layer (2) and the internal layer (3).
6. the backboard of solar cell module according to claim 1, characterized in that the internal layer (3) is fluorine-containing or not
It is fluorine-containing.
7. the backboard of solar cell module according to claim 1, characterized in that the internal layer (3) covers whole institutes
It states middle layer (2) or the internal layer (3) covers the regional area of the middle layer (2).
8. the backboard of solar cell module according to claim 7, characterized in that the internal layer (3) have with it is described
The identical pattern of pattern layer (31) containing ultraviolet absorbing agent.
9. the backboard of solar cell module according to claim 1, characterized in that the substrate is by the not fluorine-containing height of multilayer
Molecular material layer is compounded to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910024051.0A CN109830560B (en) | 2019-01-10 | 2019-01-10 | Back plate of solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910024051.0A CN109830560B (en) | 2019-01-10 | 2019-01-10 | Back plate of solar cell module |
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| Publication Number | Publication Date |
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| CN109830560A true CN109830560A (en) | 2019-05-31 |
| CN109830560B CN109830560B (en) | 2021-07-16 |
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| CN109830560B (en) | 2021-07-16 |
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