CN217921901U - Solar photovoltaic cell module and composite packaging adhesive film thereof - Google Patents
Solar photovoltaic cell module and composite packaging adhesive film thereof Download PDFInfo
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- CN217921901U CN217921901U CN202122453682.XU CN202122453682U CN217921901U CN 217921901 U CN217921901 U CN 217921901U CN 202122453682 U CN202122453682 U CN 202122453682U CN 217921901 U CN217921901 U CN 217921901U
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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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Abstract
The utility model provides a solar photovoltaic cell module and compound encapsulation glued membrane thereof is formed by glued membrane sandwich layer and the silicon rubber rete complex that is located glued membrane sandwich layer surface. The utility model provides a compound encapsulation glued membrane, through cover one deck organosilicon material layer on the glued membrane sandwich layer, with organosilicon material layer and battery piece contact during the subassembly lamination, make full use of organosilicon material high bond strength, the characteristic of nos auxiliary agent migration, slip, bubble scheduling problem in the traditional individual layer POE glued membrane lamination process of solution that can be fine.
Description
Technical Field
The utility model relates to a packaging material field for the solar photovoltaic cell module especially relates to a solar photovoltaic cell module and compound encapsulation glued membrane thereof.
Background
The polyolefin elastomer (POE) is a copolymer of ethylene and butylene or octene, and the molecular chain of the polyolefin elastomer is in a saturated olefin structure, is stable and nonpolar, and is not easy to crystallize. Therefore, the polyolefin elastomer has excellent water vapor barrier capacity, ion barrier capacity and high light transmittance, does not generate acidic substances in the aging process, and has excellent aging resistance; and the material has high volume resistivity and excellent PID resistance, and is a material for photovoltaic cell packaging adhesive films which is developed quickly at present.
Besides the polyolefin elastomer resin matrix, the POE packaging adhesive film component also contains addition auxiliaries such as a cross-linking agent, an auxiliary cross-linking agent, a tackifier, a UV stabilizer, a UV absorbent and the like. The added auxiliary agent is generally a polar material, and the POE resin is a non-polar material, so that the auxiliary agent is easy to separate out from the POE adhesive film in the laminating process of the battery assembly and migrates to the surface of the adhesive film due to the large polarity difference between the resin matrix and the auxiliary agent, thereby causing the problems of slippage of a battery piece, lamination bubbles and the like, and influencing the production efficiency and yield of the photovoltaic battery assembly.
In order to solve the problem that the lamination quality of the assembly is affected by the precipitation of an auxiliary agent in the POE adhesive film lamination process, one research direction is to compound an ethylene-vinyl acetate (EVA) adhesive film on the inner layer and the outer layer of the POE adhesive film to form a composite adhesive film with an EPE or EP structure (the E layer is an EVA adhesive film layer, and the P layer is a POE adhesive film layer). The problem of additive precipitation is solved by utilizing the characteristic of good compatibility of the additive and the EVA adhesive film, and the laminating efficiency and yield of the battery assembly are improved. However, the EVA material is easily degraded under the action of light, heat and oxygen, which causes the material to have reduced light transmittance and yellow stain, thereby affecting the long-term service life of the solar cell module.
Therefore, it is an urgent technical problem to solve to provide a technical means to solve the defect of the precipitation of the auxiliary agent in the POE encapsulating adhesive film and to ensure excellent light transmittance and weather resistance.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's defect, provide a solar photovoltaic cell module and compound encapsulation glued membrane thereof.
The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:
in a first aspect, the present invention provides a compound packaging adhesive film, which is composed of an adhesive film core layer and a silicone rubber film layer on the surface of the adhesive film core layer.
In a preferred embodiment, the material of the adhesive film core layer is a polyolefin elastomer.
In a preferred embodiment, one side of the adhesive film core layer is compounded with the silicone rubber film layer.
In another preferred embodiment, both sides of the adhesive film core layer are compounded with the silicone rubber film layer.
In a preferred embodiment, embossing or frosting is arranged on two sides of the adhesive film core layer.
In a preferred embodiment, the polyolefin elastomer is a copolymer elastomer of ethylene and butene or octene.
In a preferred embodiment, the material of the silicone rubber film layer is one or two of polydimethylsiloxane and modified polydimethylsiloxane.
In a preferred embodiment, the total thickness of the composite packaging adhesive film is 0.1mm to 1.2mm.
In a preferred embodiment, the thickness of one silicone rubber film accounts for 5% -40% of the total thickness of the composite packaging adhesive film.
The second aspect, the utility model provides a solar photovoltaic cell module, including above-mentioned compound encapsulation glued membrane.
The utility model adopts the above technical scheme, compare with prior art, have following technological effect:
the utility model provides a compound encapsulation glued membrane, through cover one deck organosilicon material layer on glued membrane sandwich layer, with organosilicon material layer and battery piece contact during the subassembly lamination, make full use of the high bonding strength of organosilicon material, the characteristic of nos booster migration, slip, the bubble scheduling problem of solution traditional individual layer POE glued membrane lamination in-process that can be fine.
Simultaneously, because organosilicon material has advantages such as higher luminousness, good hydrophobicity, good electrical insulation, heat-resisting, resistant ultraviolet ageing, service temperature range width, uses the utility model discloses technical scheme's compound encapsulation glued membrane's battery pack can be stable work for a long time under adverse circumstances, prolongs photovoltaic cell subassembly's life.
Drawings
Fig. 1 is a schematic structural view of a composite packaging adhesive film of the present invention;
FIG. 2 is a schematic structural view of another composite packaging adhesive film of the present invention;
the reference numerals denote the description:
1-glue film core layer and 2-silicon rubber film layer
Detailed Description
The present invention will now be described in detail and specifically with reference to specific examples, which are provided to facilitate a better understanding of the present invention and are not intended to limit the scope of the present invention.
Example 1
Referring to fig. 1, the present embodiment provides a composite packaging film, which includes a film core layer 1 and a silicone rubber film layer 2 located on an outer layer of the film core layer 1.
Specifically, the composite packaging adhesive film is formed by compounding the adhesive film core layer 1 and the silicon rubber film layer 2, and the specific compounding method can be to compound the silicon rubber film layer on the outer surface of the adhesive film core layer 1 through a compounding roller, or can also be to directly spray the material for forming the silicon rubber film layer 2 on the outer surface of the adhesive film core layer 1.
In this embodiment, the film core layer 1 is a polyolefin elastomer. Further, the polyolefin elastomer is a copolymer elastomer of ethylene and butene or octene.
In this embodiment, the two sides of the adhesive film core layer are provided with embossments. Certain effect can be achieved through the arrangement of various different stripes. For example, the embossing is straight stripes or oblique stripes, so that the friction force can be improved, the battery piece is prevented from shifting when the components are sequentially laid in a stacking mode, and meanwhile, an exhaust channel can be formed during lamination and vacuum pumping, and bubbles are prevented from being generated; or the embossing patterns are pyramid or prismoid patterns, and the embossing patterns face the direction of the cell pieces, so that sunlight in gaps among the cell pieces of the assembly can be reflected to the surfaces of the cell pieces, and the utilization rate of the assembly to the sunlight is increased.
In this embodiment, the material of the silicone rubber film layer is one or two of polydimethylsiloxane and modified polydimethylsiloxane.
The outer surface of the adhesive film core layer 1 is compounded with the silicon rubber film layer to form a composite adhesive film, and the problems of slippage, bubbles and the like in the adhesive film laminating process can be well solved by utilizing the characteristics of easiness in curing and forming, no volatilization of an auxiliary agent, high bonding strength and the like of the silicon rubber film layer 2. Because the organic silicon material has the advantages of higher light transmittance, good hydrophobicity, good electrical insulation, heat resistance, ultraviolet aging resistance, wide use temperature range and the like, the defect of poor long-term reliability of an EPE or EP structure adhesive film is overcome, the light transmittance and the weather resistance are ensured, and the service life of the photovoltaic cell component can be prolonged.
In this embodiment, the total thickness of the composite packaging adhesive film is 0.1mm to 1.2mm.
In this embodiment, the thicknesses of the inner and outer silicone rubber films respectively account for 5% -40% of the total thickness of the composite packaging adhesive film.
Example 2
Referring to fig. 1, the present embodiment provides a composite packaging adhesive film, which includes an adhesive film core layer 1 and a silicone rubber film layer 2 disposed on the inner and outer surfaces of the adhesive film core layer 1.
Specifically, the composite packaging adhesive film is formed by compounding an adhesive film core layer 1 and a silicon rubber film layer 2, and the specific compounding method can be that the silicon rubber film layer is compounded on the inner surface and the outer surface of the adhesive film core layer 1 through a compounding roller.
In this embodiment, the adhesive film core layer 1 is a polyolefin elastomer. Further, the polyolefin elastomer is a copolymer elastomer of ethylene and butene or octene.
In this embodiment, glued membrane sandwich layer both sides are equipped with the dull polish line, can improve frictional force, and the encapsulation glued membrane of dull polish line is diffuse reflection or low specular reflection to the reflection of light simultaneously, can pass through diffuse reflection and irregular directive each direction with the light that strikes the battery clearance, and the total reflection through front glass is detained more light in photovoltaic module, has improved the generating efficiency of subassembly from this.
In this embodiment, the material of the silicone rubber film layer 2 is one or two of polydimethylsiloxane and modified polydimethylsiloxane.
The inner surface and the outer surface of the adhesive film core layer 1 are compounded with the silicon rubber film layer 2 to form a compound adhesive film, and the problems of slippage, air bubbles and the like in the adhesive film laminating process can be well solved by utilizing the characteristics of easy curing and forming, no volatilization of an auxiliary agent, high bonding strength and the like of the silicon rubber film layer 2. Because the organosilicon material has the advantages of higher light transmittance, good hydrophobicity, good electrical insulation, heat resistance, ultraviolet aging resistance, wide use temperature range and the like, the defect of poor long-term reliability of an EPE or EP structural adhesive film is overcome, the light transmittance and the weather resistance are ensured, and the service life of the photovoltaic cell assembly can be prolonged. Meanwhile, compared with a single-layer silicon rubber film, the cost is greatly reduced.
In this embodiment, the total thickness of the composite packaging adhesive film is 0.1mm to 1.2mm.
In this embodiment, the thicknesses of the inner and outer silicone rubber films respectively account for 5% -40% of the total thickness of the composite packaging adhesive film.
Example 3
The embodiment provides a solar photovoltaic cell module, which comprises the composite packaging adhesive film in the embodiment 1. In some embodiments, the silicone rubber film layer 2 is in contact with a cell sheet in the solar photovoltaic cell module.
Example 4
The embodiment provides a solar photovoltaic cell module, which comprises the composite packaging adhesive film in the embodiment 2.
Test example
The composite packaging adhesive film and POE packaging adhesive film in examples 1-2 were tested for degree of crosslinking, film transmittance, 180 ° peel strength of the adhesive film, and moisture and heat resistance of the adhesive film. The properties were tested as follows:
degree of crosslinking
Laminating, crosslinking and curing the adhesive film on a vacuum laminating machine, taking about 0.5g of the laminated adhesive film, cutting into small particles, putting into a stainless steel wire mesh bag after cleaning and drying, and then putting into a xylene solvent to extract for 5 hours at 140 ℃; after extraction, the sample was taken out and dried in a vacuum oven at 140 ℃ to constant weight. And calculating the crosslinking degree of the adhesive film according to the weight of the dried sample.
And (3) a laminating process: pumping for 5min at 145 deg.C for 10min.
Light transmittance of adhesive film
Testing the light transmittance of the laminated adhesive film according to the method of GB/T2410-2008; the wavelength range is 290 nm-1100 nm.
And (3) laminating process: pumping for 5min at 145 deg.C for 10min.
High strength of 180 deg. peeling adhesive film
Testing the peeling strength of the laminated adhesive film, glass and a back plate according to the method of GB/T2790-1995; the drawing speed was 100mm/min.
Sample structure: glass/adhesive film/backsheet.
And (3) laminating process: pumping for 5min at 145 deg.C for 10min.
Damp and heat resistance of adhesive film
According to IEC 61215-2: 2016. Test for wet and heat resistance of the laminated adhesive film. The stretching speed is 100mm/min, the damp-heat experiment temperature is 85 ℃, the relative humidity is 85 percent, and the time is 2000h.
Sample structure: glass cement film/backsheet.
And (3) a laminating process: pumping for 5min at 145 deg.C for 10min.
The performance test results of examples 1-2 and POE packaging adhesive films are shown in Table 1:
TABLE 1 Performance test results of examples 1-2 and POE packaging adhesive films
The above detailed description of the embodiments of the present invention is only for exemplary purposes, and the present invention is not limited to the above described embodiments. Any equivalent modifications and substitutions to the disclosed embodiments are within the scope of the present invention as those skilled in the art will recognize. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.
Claims (6)
1. A composite packaging adhesive film is characterized by being formed by compounding an adhesive film core layer and a silicon rubber film layer positioned on the surface of the adhesive film core layer; the total thickness is 0.1 mm-1.2 mm; the thickness of one layer of the silicone rubber film accounts for 5-40% of the total thickness of the composite packaging adhesive film.
2. The composite packaging film of claim 1, wherein the film core layer is made of a polyolefin elastomer.
3. The composite packaging film of claim 1, wherein one side of the film core layer is compounded with the silicone rubber film layer.
4. The composite packaging film of claim 1, wherein both sides of the film core layer are compounded with the silicone rubber film layer.
5. The composite packaging film as claimed in claim 1, wherein the adhesive film core layer has embossments or frosted lines on both sides.
6. A solar photovoltaic cell module comprising the composite encapsulant film of any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122453682.XU CN217921901U (en) | 2021-10-12 | 2021-10-12 | Solar photovoltaic cell module and composite packaging adhesive film thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122453682.XU CN217921901U (en) | 2021-10-12 | 2021-10-12 | Solar photovoltaic cell module and composite packaging adhesive film thereof |
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| Publication Number | Publication Date |
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| CN217921901U true CN217921901U (en) | 2022-11-29 |
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| CN202122453682.XU Active CN217921901U (en) | 2021-10-12 | 2021-10-12 | Solar photovoltaic cell module and composite packaging adhesive film thereof |
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| CN (1) | CN217921901U (en) |
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2021
- 2021-10-12 CN CN202122453682.XU patent/CN217921901U/en active Active
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