CN220579171U - Photovoltaic packaging adhesive film and photovoltaic module - Google Patents
Photovoltaic packaging adhesive film and photovoltaic module Download PDFInfo
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- CN220579171U CN220579171U CN202321038348.0U CN202321038348U CN220579171U CN 220579171 U CN220579171 U CN 220579171U CN 202321038348 U CN202321038348 U CN 202321038348U CN 220579171 U CN220579171 U CN 220579171U
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- 239000002313 adhesive film Substances 0.000 title claims abstract description 430
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 114
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 238000002834 transmittance Methods 0.000 claims abstract description 33
- 239000012785 packaging film Substances 0.000 claims description 57
- 229920006280 packaging film Polymers 0.000 claims description 57
- 239000000758 substrate Substances 0.000 claims description 26
- 238000002955 isolation Methods 0.000 claims description 25
- 238000005538 encapsulation Methods 0.000 claims description 16
- 239000012528 membrane Substances 0.000 abstract description 20
- 230000004888 barrier function Effects 0.000 abstract description 17
- 230000035699 permeability Effects 0.000 abstract description 11
- 230000005540 biological transmission Effects 0.000 description 20
- 230000000903 blocking effect Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 230000005012 migration Effects 0.000 description 4
- 238000013508 migration Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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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)
- Laminated Bodies (AREA)
Abstract
The utility model relates to the technical field of photovoltaics. The application discloses photovoltaic packaging adhesive film, photovoltaic packaging adhesive film includes first glued membrane layer and second glued membrane layer, and the second glued membrane layer is located one side of first glued membrane layer. The water vapor permeability of the first adhesive film layer is smaller than that of the second adhesive film layer, and the width of the first adhesive film layer is larger than that of the second adhesive film layer. The application also discloses a pair of photovoltaic packaging adhesive films. The application also discloses a photovoltaic module. The photovoltaic packaging adhesive film improves the water vapor barrier performance of the photovoltaic packaging adhesive film by arranging a plurality of adhesive film layers and arranging different water vapor transmittance and wide film layers.
Description
Technical Field
The utility model relates to the technical field of photovoltaics, in particular to a photovoltaic packaging adhesive film and a photovoltaic module.
Background
The stability of the commonly used photovoltaic cell under the action of water vapor and illumination is poor, the commonly used photovoltaic cell is easy to be corroded and decomposed by the water vapor, and the performance of the assembly can be greatly attenuated, so that the service life of the photovoltaic cell is shortened. Different encapsulant materials are often used to enhance the moisture barrier properties of photovoltaic cells.
However, the applicant found in completing the examples of the present application that the above technique has the following problems: the existing photovoltaic packaging material has a general blocking effect on water vapor.
Disclosure of Invention
In order to solve the prior art not enough, this application is through setting up a plurality of glued membrane layers with the photovoltaic packaging glued membrane and setting up different steam transmissivity and broad width between the glued membrane layer, promotes the steam separation performance of photovoltaic packaging glued membrane.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
one aspect of the application discloses a photovoltaic packaging adhesive film, which comprises a first adhesive film layer and a second adhesive film layer; the second adhesive film layer is arranged on one side of the first adhesive film layer;
the water vapor permeability of the first adhesive film layer is smaller than that of the second adhesive film layer, and the width of the first adhesive film layer is larger than that of the second adhesive film layer.
Further, the photovoltaic packaging adhesive film further comprises an isolation layer, and the isolation layer is arranged between the first adhesive film layer and the second adhesive film layer.
Further, the packaging adhesive film further comprises a third adhesive film layer, the third adhesive film layer is located on one side, far away from the first adhesive film layer, of the second adhesive film layer, and the water vapor transmittance of the third adhesive film layer is smaller than that of the second adhesive film layer.
Further, the width of the third adhesive film layer is smaller than or equal to the width of the first adhesive film layer.
Further, the photovoltaic packaging adhesive film further comprises an isolation layer, and the isolation layer is arranged between the third adhesive film layer and the second adhesive film layer.
Further, the thickness of the first adhesive film layer is 0.1-0.3mm, and the thickness of the second adhesive film layer is 0.1-0.3mm.
The utility model provides a pair of photovoltaic packaging glued membrane is still provided to another aspect of this application, and it includes first glued membrane and the second glued membrane of rolling respectively, and the steam transmissivity of first glued membrane is less than the steam transmissivity of second glued membrane, and the broad width of first glued membrane is greater than the broad width of second glued membrane.
A third aspect of the present application provides a photovoltaic module, including a battery string, a photovoltaic substrate disposed on two sides of the battery string, and a packaging layer disposed between the battery string and the photovoltaic substrate; the packaging layer comprises a first adhesive film part and a second adhesive film part attached to one side of the first adhesive film part, the first adhesive film part is attached to the battery string, the water vapor transmittance of the first adhesive film part is smaller than that of the second adhesive film part, and the size of the first adhesive film part is larger than that of the second adhesive film part.
Further, the packaging layer further comprises a third adhesive film portion, the third adhesive film portion is attached to one side, far away from the first adhesive film portion, of the second adhesive film portion, the water vapor transmittance of the third adhesive film portion is smaller than that of the second adhesive film portion, and the size of the third adhesive film portion is smaller than or equal to that of the first adhesive film portion.
Further, the encapsulation layer is made of a photovoltaic encapsulation film as described above or a pair of photovoltaic encapsulation films as described above.
This application is through setting up a plurality of glued membrane layers with the photovoltaic packaging glued membrane and set up different steam transmissivity and broad width between the glued membrane layer, has solved the lower problem of photovoltaic packaging glued membrane separation steam performance, has promoted the separation steam performance and the life of photovoltaic packaging glued membrane.
Drawings
Fig. 1 is a schematic structural diagram of a photovoltaic packaging adhesive film according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a photovoltaic packaging film according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a photovoltaic packaging film according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a photovoltaic packaging film according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a photovoltaic packaging film according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of a photovoltaic packaging film according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present application.
Fig. 8 is a schematic structural diagram of an encapsulation layer according to an embodiment of the present application.
Fig. 9 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present application.
In the figure: the photovoltaic packaging film 100, the first film layer 11, the second film layer 12, the isolation layer 13, the third film layer 14, the first film 15, the second film 16, the photovoltaic module 200, the battery string 21, the photovoltaic substrate 22, the packaging layer 23, the first film portion 231, the second film portion 232 and the third film portion 233.
Detailed Description
In order to make the present utility model better understood by those skilled in the art, the technical solutions in the specific embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model.
The application solves the problem that the barrier water vapor performance of the photovoltaic packaging adhesive film is poor by arranging a plurality of adhesive film layers and arranging different water vapor transmittance and wide adhesive film layers on the photovoltaic packaging adhesive film, and improves the barrier water vapor performance and service life of the photovoltaic packaging adhesive film.
As shown in fig. 1, the present application provides a photovoltaic packaging adhesive film 100. The photovoltaic packaging adhesive film 100 comprises a first adhesive film layer 11 and a second adhesive film layer 12, wherein the second adhesive film layer 12 is arranged on one side of the first adhesive film layer 11. The water vapor transmission rate of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12, and the width of the first adhesive film layer 11 is larger than that of the second adhesive film layer 12. The water vapor barrier is carried out through the combined action of the first adhesive film layer 11 and the second adhesive film layer 12 in the photovoltaic packaging adhesive film 100, the water vapor transmittance of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12, and the water vapor barrier effect of the photovoltaic packaging adhesive film 100 is integrally improved. The breadth of the first adhesive film layer 11 is larger than the breadth of the second adhesive film layer 12, and the water vapor transmittance of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12, so that the area of the first adhesive film layer 11 in the photovoltaic packaging adhesive film 100 is large, the water vapor transmittance is small, and the water vapor blocking effect of the photovoltaic packaging adhesive film 100 is guaranteed because the water vapor enters the photovoltaic packaging adhesive film 100 and passes through the first adhesive film layer 11 anyway.
As an embodiment, as shown in fig. 2, the photovoltaic packaging film 100 further includes an isolation layer 13, where the isolation layer 13 is disposed between the first film layer 11 and the second film layer 12. The isolation layer 13 is provided to isolate the first adhesive film layer 11 from the second adhesive film layer 12, so that the two adhesive film layers are not contacted with each other, thereby solving the problem of migration of the auxiliary agent caused by long-time contact of the two adhesive film layers, and the isolation layer 13 is removed when the photovoltaic packaging adhesive film 100 is needed. The isolation layer 13 is simple in process and convenient to operate, easy to popularize and convenient to operate, and the preservation time and the packaging effect of the photovoltaic packaging adhesive film 100 are improved. Specifically, the isolation layer 13 may be any layered material capable of preventing migration of auxiliaries between the first adhesive film layer 11 and the second adhesive film layer 12.
As a specific embodiment, as shown in fig. 3, the photovoltaic packaging film 100 further includes a third film layer 14, the third film layer 14 is located on a side of the second film layer 12 away from the first film layer 11, and the moisture vapor transmission rate of the third film layer 14 is smaller than the moisture vapor transmission rate of the second film layer 12. In the photovoltaic packaging film 100, the second film layer 12 is arranged between the first film layer 11 and the third film layer 14, the water vapor transmittance of the third film layer 14 is smaller than that of the second film layer 12, the first film layer 11 and the third film layer 14 play a role in blocking water vapor in the photovoltaic packaging film 100, and the third film layer 14 is arranged on one side, far away from the first film layer 11, of the second film layer 12 through the photovoltaic packaging film 100, so that the effect of blocking water vapor of the photovoltaic packaging film 100 is further improved.
As a specific embodiment, as shown in fig. 4, the width of the third adhesive film layer 14 is less than or equal to the width of the first adhesive film layer 11. The width of the third adhesive film layer 14 is smaller than or equal to the width of the first adhesive film layer 11, water vapor is blocked by the first adhesive film layer 11 through the third adhesive film layer 14, the water vapor blocking effect of the photovoltaic packaging adhesive film 100 is not affected, the adhesive film layer is not completely transparent, the width of the third adhesive film layer 14 is smaller than or equal to the width of the first adhesive film layer 11 under the condition that the blocking effect of the photovoltaic packaging adhesive film 100 is guaranteed, and the light transmittance of the photovoltaic packaging adhesive film 100 is improved. Specifically, the width of the third adhesive film layer 14 may be smaller than that of the second adhesive film layer 12, so that the photovoltaic packaging adhesive film 100 has the best light transmittance. The width of the third film layer 14 may be smaller than that of the first film layer 11 and larger than that of the second film layer 12, so that the light transmittance and the water vapor barrier effect of the provided photovoltaic packaging film 100 are most balanced. The width of the third film layer 14 may be equal to that of the first film layer 11, so that the photovoltaic packaging film 100 has the best effect of blocking water vapor.
As an embodiment, as shown in fig. 5, the photovoltaic packaging film 100 further includes an isolation layer 13, where the isolation layer 13 is disposed between the third film layer 14 and the second film layer 12. The photovoltaic packaging adhesive film 100 can also be provided with an isolation layer 13 between the second adhesive film layer 12 and the third adhesive film layer 14, so that the two adhesive film layers are isolated from being contacted with each other, and no auxiliary agent migration is generated when the two adhesive film layers are not contacted. The isolation layer 13 is removed when the photovoltaic packaging adhesive film 100 is used, so that the preservation time and the packaging effect of the photovoltaic packaging adhesive film 100 are improved. Specifically, the isolation layer 13 may be any layered material capable of preventing migration of auxiliaries between the second adhesive film layer 12 and the third adhesive film layer 14.
As a specific embodiment, the thickness of the first adhesive film layer 11 is 0.1-0.3mm, and the thickness of the second adhesive film layer 12 is 0.1-0.3mm. When the thickness of the adhesive film layer is less than 0.1mm, the barrier effect of the adhesive film layer on water vapor is small, and the water vapor barrier property of the photovoltaic packaging adhesive film 100 cannot be ensured. When the thickness of the film layer is greater than 0.3mm, the transmittance of the film layer is reduced, which affects the transmittance of the photovoltaic packaging film 100. In conclusion, the thickness of the film layer is 0.1-0.3mm, which is most reasonable, so that the water vapor barrier effect of the photovoltaic packaging film 100 is ensured and the light transmittance of the photovoltaic packaging film 100 is also ensured within the thickness range.
The application also provides a pair of photovoltaic packaging adhesive films 100 shown in fig. 6, which comprises a first adhesive film 15 and a second adhesive film 16 which are respectively wound, wherein the water vapor transmittance of the first adhesive film 15 is smaller than that of the second adhesive film 16, and the width of the first adhesive film 15 is larger than that of the second adhesive film 16. The first adhesive film 15 and the second adhesive film 16 are respectively wound, and the adhesive films are sequentially paved as required during use. The water vapor transmission rate of the first adhesive film 15 is smaller than that of the second adhesive film 16, the width of the first adhesive film 15 is larger than that of the second adhesive film, the area of the first adhesive film 15 in the photovoltaic packaging adhesive film 100 arranged in this way is large, the water vapor transmission rate is small, and water enters the photovoltaic packaging adhesive film 100 to pass through the first adhesive film 15 anyway, so that the water vapor blocking effect of the photovoltaic packaging adhesive film 100 is ensured.
As an embodiment, the first adhesive film layer or the material of the first adhesive film may be selected from at least one of POE, PE, PP, SEBS, SIS or SBS. Preferably, the first adhesive film layer or the material of the first adhesive film may be POE. The second adhesive film layer or the material of the second adhesive film may be selected from at least one of EVA, POP, PVB, EAA, EMA, EBA or EMH. Preferably, the second adhesive film layer or the material of the second adhesive film may be EVA. The third adhesive film layer or the material of the third adhesive film is selected from at least one of POE, PE, PP, SEBS, SIS or SBS. Preferably, the material of the third adhesive film layer or the third adhesive film may be POE. The material of the barrier layer is selected from at least one of PET or PP.
The application also provides a photovoltaic module 200 as shown in fig. 7, where the photovoltaic module 200 includes a cell string 21, a photovoltaic substrate 22 and a packaging layer 23, the photovoltaic substrate 22 is disposed on two sides of the cell string 21, and the packaging layer 23 is disposed between the cell string 21 and the photovoltaic substrate 22. The packaging layer 23 comprises a first adhesive film portion 231 and a second adhesive film portion 232, the second adhesive film portion 232 is attached to one side of the first adhesive film portion 231, the first adhesive film portion 231 is attached to the battery string 21, the water vapor transmittance of the first adhesive film portion 231 is smaller than that of the second adhesive film portion 232, and the size of the first adhesive film portion 231 is larger than that of the second adhesive film portion 232. The water vapor transmission rate of the first adhesive film portion 231 is smaller than that of the second adhesive film portion 232, the battery string 21 is attached and protected by the first adhesive film portion 231 with high water vapor barrier property, and the packaging layer 23 is guaranteed to have the maximum water vapor isolation protection effect. The size of the first adhesive film portion 231 is larger than the size of the second adhesive film portion 232, water vapor enters the packaging layer 23 and passes through the first adhesive film portion 231, so that the water vapor blocking effect of the packaging layer 23 is guaranteed, the packaging layer 23 is not completely transparent, the size of the second adhesive film portion 232 is smaller than the size of the first adhesive film portion 231 on the premise that the size of the first adhesive film portion 231 and the water vapor blocking effect are guaranteed to completely protect the battery string 21, the light transmittance of the packaging layer 23 is improved, and the photoelectric conversion efficiency and power of the photovoltaic module 200 are improved.
As a specific embodiment, as shown in fig. 8, the packaging layer 23 further includes a third adhesive film portion 233, the third adhesive film portion 233 is attached to a side of the second adhesive film portion 232 away from the first adhesive film portion 231, the moisture vapor transmission rate of the third adhesive film portion 233 is smaller than the moisture vapor transmission rate of the second adhesive film portion 232, and the size of the third adhesive film portion 233 is smaller than or equal to the size of the first adhesive film portion 231. The packaging layer 23 in the photovoltaic module 200 plays a role of water vapor barrier, namely an outer layer of adhesive film, a third adhesive film 233 is arranged on one side, far away from the first adhesive film 231, of the second adhesive film 232, and the water vapor transmittance of the third adhesive film 233 is smaller than that of the second adhesive film 232. At this time, the packaging layer 23 plays a role in water vapor barrier, mainly comprising the first adhesive film portion 231 and the third adhesive film portion 233, and the third adhesive film portion 233 is arranged on one side, far away from the first adhesive film portion 231, of the second adhesive film portion 232, so that the water vapor barrier effect of the packaging layer 23 is further improved, and the service life and performance of the photovoltaic module 200 are improved. The encapsulation layer 23 in the photovoltaic module 200 is not completely transparent, and after the first adhesive film portion 231 is ensured to play a role in protecting the battery string 21 from blocking water vapor, the size of the third adhesive film portion 233 is smaller than or equal to the size of the first adhesive film portion 231, so that the light transmittance of the encapsulation layer 23 can be improved, and further the photoelectric conversion efficiency and the power of the photovoltaic module 200 are improved. Specifically, the size of the third adhesive film portion 233 may be smaller than the size of the second adhesive film portion 232, so that the package layer 23 is preferably transparent. The size of the third film portion 233 may be smaller than the size of the first film portion 231 and larger than the size of the second film portion 232, so that the light transmittance and the moisture barrier effect of the encapsulation layer 23 are balanced. The size of the third adhesive film portion 233 may be equal to the size of the first adhesive film portion 231, so that the packaging layer 23 has the best water vapor blocking effect. When in use, the packaging layer 23 with the most proper light transmittance and water vapor blocking effect can be selected according to different environments and different conditions.
In order to better understand the above technical solution, the following describes the above technical solution in detail with reference to specific embodiments.
Example 1
A photovoltaic packaging film 100 is shown in fig. 1. The photovoltaic packaging adhesive film 100 includes a first adhesive film layer 11 (POE) and a second adhesive film layer 12 (EVA). The thickness of the first adhesive film layer 11 is 0.1mm, and the thickness of the second adhesive film layer 12 is 0.1mm. The water vapor permeability of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12, and the area ratio of the first adhesive film layer 11 to the second adhesive film layer 12 is set to be 1.1.
The photovoltaic module 200 shown in fig. 7 is prepared by using the photovoltaic packaging adhesive film 100. The photovoltaic module 200 includes a battery string 21, a photovoltaic substrate 22, and a packaging layer 23, the photovoltaic substrate 22 is disposed on two sides of the battery string 21, and the packaging layer 23 is disposed between the battery string 21 and the photovoltaic substrate 22. The encapsulation layer 23 includes a first adhesive film portion 231 and a second adhesive film portion 232. When the photovoltaic module 200 is laminated, the first adhesive film layer 11 is attached to one side of the battery string 21, and the second adhesive film layer 12 is attached to one side of the first adhesive film layer 11 away from the battery string 21. The photovoltaic packaging film 100 is laminated to prepare the packaging layer 23, the first film layer 11 is laminated to form the first film portion 231, and the second film layer 12 is laminated to form the second film portion 232.
Example 2
A photovoltaic packaging film 100 is shown in fig. 1. The photovoltaic packaging adhesive film 100 includes a first adhesive film layer 11 (POE) and a second adhesive film layer 12 (EVA). The thickness of the first adhesive film layer 11 is 0.3mm, and the thickness of the second adhesive film layer 12 is 0.3mm. The water vapor permeability of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12, and the area ratio of the first adhesive film layer 11 to the second adhesive film layer 12 is set to be 1.1.
The photovoltaic module 200 shown in fig. 7 is prepared by using the photovoltaic packaging film 100. The method of setting the photovoltaic module 200 is the same as in example 1.
Example 3
A photovoltaic packaging film 100 is shown in fig. 1. The photovoltaic packaging adhesive film 100 includes a first adhesive film layer 11 (POE) and a second adhesive film layer 12 (EVA). The thickness of the first adhesive film layer 11 is 0.1mm, and the thickness of the second adhesive film layer 12 is 0.1mm. The water vapor permeability of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12, and the area ratio of the first adhesive film layer 11 to the second adhesive film layer 12 is set to be 1.3.
The photovoltaic module 200 shown in fig. 7 is prepared by using the photovoltaic packaging film 100. The method of setting the photovoltaic module 200 is the same as in example 1.
Example 4
A photovoltaic packaging film 100 is shown in fig. 2. The photovoltaic packaging adhesive film 100 includes a first adhesive film layer 11 (POE) and a second adhesive film layer 12 (EVA). The thickness of the first adhesive film layer 11 is 0.1mm, and the thickness of the second adhesive film layer 12 is 0.1mm. The water vapor permeability of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12, the area ratio of the first adhesive film layer 11 to the second adhesive film layer 12 is set to be 1.1, an isolation layer 13 with the thickness of 0.05mm is arranged between the first adhesive film layer 11 and the second adhesive film layer 12, and the isolation layer 13 is removed when the photovoltaic packaging adhesive film 100 is used.
The photovoltaic module 200 shown in fig. 7 is prepared by using the photovoltaic packaging film 100. The method of setting the photovoltaic module 200 is the same as in example 1.
Example 5
A photovoltaic packaging film 100 is shown in fig. 2. The photovoltaic packaging adhesive film 100 includes a first adhesive film layer 11 (POE) and a second adhesive film layer 12 (EVA). The thickness of the first adhesive film layer 11 is 0.1mm, and the thickness of the second adhesive film layer 12 is 0.1mm. The water vapor permeability of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12, the area ratio of the first adhesive film layer 11 to the second adhesive film layer 12 is set to be 1.3, an isolation layer 13 with the thickness of 0.05mm is arranged between the first adhesive film layer 11 and the second adhesive film layer 12, and the isolation layer 13 is removed when the photovoltaic packaging adhesive film 100 is used.
The photovoltaic module 200 shown in fig. 7 is prepared by using the photovoltaic packaging film 100. The method of setting the photovoltaic module 200 is the same as in example 1.
Example 6
A photovoltaic packaging film 100 is shown in fig. 3. The photovoltaic packaging adhesive film 100 includes a first adhesive film layer 11 (POE), a second adhesive film layer 12 (EVA), and a third adhesive film layer 14 (POE). The thickness of the first adhesive film layer 11 is 0.1mm, the thickness of the second adhesive film layer 12 is 0.1mm, and the thickness of the third adhesive film layer 14 is 0.1mm. The water vapor transmission rate of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12, and the water vapor transmission rate of the third adhesive film layer 14 is smaller than that of the second adhesive film layer 12. The ratio of the area of the first film layer 11 to the area of the second film layer 12 was set to 1.3, and the ratio of the area of the third film layer 14 to the area of the second film layer 12 was set to 1.3.
The photovoltaic module 200 shown in fig. 9 is prepared by using the photovoltaic packaging film 100. The photovoltaic module 200 includes a battery string 21, a photovoltaic substrate 22, and a packaging layer 23, the photovoltaic substrate 22 is disposed on two sides of the battery string 21, and the packaging layer 23 is disposed between the battery string 21 and the photovoltaic substrate 22. The encapsulation layer 23 includes a first adhesive film 231, a second adhesive film 232, and a third adhesive film 233. When the photovoltaic module 200 is laminated, the first adhesive film layer 11 is attached to one side of the battery string 21, the second adhesive film layer 12 is attached to one side of the first adhesive film layer 11 away from the battery string 21, and the third adhesive film layer 14 is attached to one side of the second adhesive film layer 12 away from the first adhesive film layer 11. The photovoltaic packaging film 100 is laminated to prepare the packaging layer 23, the first film layer 11 is laminated to the first film portion 231, the second film layer 12 is laminated to the second film portion 232, and the third film layer 14 is laminated to the third film portion 233.
Example 7
A photovoltaic packaging film 100 is shown in fig. 3. The photovoltaic packaging adhesive film 100 includes a first adhesive film layer 11 (POE), a second adhesive film layer 12 (EVA), and a third adhesive film layer 14 (POE). The thickness of the first adhesive film layer 11 is 0.1mm, the thickness of the second adhesive film layer 12 is 0.1mm, and the thickness of the third adhesive film layer 14 is 0.1mm. The water vapor transmission rate of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12, and the water vapor transmission rate of the third adhesive film layer 14 is smaller than that of the second adhesive film layer 12. The ratio of the area of the first film layer 11 to the area of the second film layer 12 was set to 1.3, and the ratio of the area of the third film layer 14 to the area of the second film layer 12 was set to 0.7.
The photovoltaic module 200 shown in fig. 9 is prepared by using the photovoltaic packaging film 100. The method of setting the photovoltaic module 200 is the same as in example 6.
Example 8
A pair of photovoltaic packaging adhesive films 100 as shown in fig. 6. The photovoltaic packaging adhesive film 100 includes a first adhesive film 15 (POE) and a second adhesive film 15 (EVA) wound up respectively. The thickness of the first adhesive film layer 11 is 0.1mm, and the thickness of the second adhesive film layer 12 is 0.1mm. The water vapor transmission rate of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12. The ratio of the area of the first film layer 11 to the area of the second film layer 12 was set to 1.3.
The photovoltaic module 200 shown in fig. 9 is prepared by using the photovoltaic packaging film 100. In the preparation of the photovoltaic module 200, the photovoltaic packaging film 100 is manufactured by sandwiching one second film 16 between two first films 15. The method of setting the photovoltaic module 200 is the same as in example 6.
Comparative example 1
A photovoltaic packaging film 100 is shown in fig. 1. The photovoltaic packaging adhesive film 100 includes a first adhesive film layer 11 (POE) and a second adhesive film layer 12 (EVA). The thickness of the first adhesive film layer 11 is 0.1mm, and the thickness of the second adhesive film layer 12 is 0.1mm. The water vapor permeability of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12, and the ratio of the area of the first adhesive film layer 11 to the area of the second adhesive film layer 12 is set to be 1.
The photovoltaic module 200 shown in fig. 7 is prepared by using the photovoltaic packaging film 100. The photovoltaic module 200 includes a battery string 21, a photovoltaic substrate 22, and a packaging layer 23, the photovoltaic substrate 22 is disposed on two sides of the battery string 21, and the packaging layer 23 is disposed between the battery string 21 and the photovoltaic substrate 22. The encapsulation layer 23 includes a first adhesive film portion 231 and a second adhesive film portion 232. When the photovoltaic module 200 is laminated, the first adhesive film layer 11 is attached to one side of the battery string 21, and the second adhesive film layer 12 is attached to one side of the first adhesive film layer 11 away from the battery string 21. The photovoltaic packaging film 100 is laminated to prepare the packaging layer 23, the first film layer 11 is laminated to form the first film portion 231, and the second film layer 12 is laminated to form the second film portion 232.
Comparative example 2
A photovoltaic packaging film 100 is shown in fig. 3. The photovoltaic packaging adhesive film 100 includes a first adhesive film layer 11 (POE), a second adhesive film layer 12 (EVA), and a third adhesive film layer 14 (POE). The thickness of the first adhesive film layer 11 is 0.1mm, the thickness of the second adhesive film layer 12 is 0.1mm, and the thickness of the third adhesive film layer 14 is 0.1mm. The water vapor transmission rate of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12, and the water vapor transmission rate of the third adhesive film layer 14 is smaller than that of the second adhesive film layer 12. The ratio of the area of the first adhesive film layer 11 to the area of the second adhesive film layer 12 is set to 1, and the ratio of the area of the third adhesive film layer 14 to the area of the second adhesive film layer 12 is set to 1.
The photovoltaic module 200 shown in fig. 9 is prepared by using the photovoltaic packaging film 100. The photovoltaic module 200 includes a battery string 21, a photovoltaic substrate 22, and a packaging layer 23, the photovoltaic substrate 22 is disposed on two sides of the battery string 21, and the packaging layer 23 is disposed between the battery string 21 and the photovoltaic substrate 22. The encapsulation layer 23 includes a first adhesive film 231, a second adhesive film 232, and a third adhesive film 233. When the photovoltaic module 200 is laminated, the first adhesive film layer 11 is attached to one side of the battery string 21, the second adhesive film layer 12 is attached to one side of the first adhesive film layer 11 away from the battery string 21, and the third adhesive film layer 14 is attached to one side of the second adhesive film layer 12 away from the first adhesive film layer 11. The photovoltaic packaging film 100 is laminated to prepare the packaging layer 23, the first film layer 11 is laminated to the first film portion 231, the second film layer 12 is laminated to the second film portion 232, and the third film layer 14 is laminated to the third film portion 233.
Comparative example 3
A photovoltaic packaging film 100 is shown in fig. 1. The photovoltaic packaging adhesive film 100 includes a first adhesive film layer 11 (POE) and a second adhesive film layer 12 (EVA). The thickness of the first adhesive film layer 11 is 0.1mm, and the thickness of the second adhesive film layer 12 is 0.1mm. The water vapor permeability of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12, the area ratio of the first adhesive film layer 11 to the second adhesive film layer 12 is set to be 1.3, and the first adhesive film layer 11 and the second adhesive film layer 12 are manufactured into the photovoltaic packaging adhesive film 100 in a coextrusion mode.
The photovoltaic module 200 shown in fig. 7 is prepared by using the photovoltaic packaging film 100. The photovoltaic module 200 includes a battery string 21, a photovoltaic substrate 22, and a packaging layer 23, the photovoltaic substrate 22 is disposed on two sides of the battery string 21, and the packaging layer 23 is disposed between the battery string 21 and the photovoltaic substrate 22. The encapsulation layer 23 includes a first adhesive film portion 231 and a second adhesive film portion 232. The photovoltaic packaging film 100 is co-extruded to prepare the packaging layer 23.
Comparative example 4
A photovoltaic packaging film 100 is shown in fig. 3. The photovoltaic packaging adhesive film 100 includes a first adhesive film layer 11 (POE), a second adhesive film layer 12 (EVA), and a third adhesive film layer 14 (POE). The thickness of the first adhesive film layer 11 is 0.1mm, the thickness of the second adhesive film layer 12 is 0.1mm, and the thickness of the third adhesive film layer 14 is 0.1mm. The water vapor permeability of the first adhesive film layer 11 is smaller than that of the second adhesive film layer 12, the water vapor permeability of the third adhesive film layer 14 is smaller than that of the second adhesive film layer 12, the area ratio of the first adhesive film layer 11 to the area of the second adhesive film layer 12 is set to be 1.3, the area ratio of the third adhesive film layer 14 to the area of the second adhesive film layer 12 is set to be 1.3, and the photovoltaic packaging adhesive film 100 is manufactured between the first adhesive film layer 11 and the second adhesive film layer 12 and the third adhesive film layer respectively in a coextrusion mode.
The photovoltaic module 200 shown in fig. 9 is prepared by using the photovoltaic packaging film 100. The photovoltaic module 200 includes a battery string 21, a photovoltaic substrate 22, and a packaging layer 23, the photovoltaic substrate 22 is disposed on two sides of the battery string 21, and the packaging layer 23 is disposed between the battery string 21 and the photovoltaic substrate 22. The encapsulation layer 23 includes a first adhesive film 231, a second adhesive film 232, and a third adhesive film 233. The photovoltaic packaging film 100 is co-extruded to prepare the packaging layer 23.
Performance test:
1. water vapor transmission rate
The moisture vapor transmission rate of the photovoltaic packaging adhesive film is tested by adopting a method in ISO 15106-2-2003 plastic film and sheet, determination of the moisture vapor transmission rate, part 2, infrared detection sensor method. The test condition is 38 ℃/100%RH, and the test area is the wide edge area of the packaging adhesive film.
2. Transmittance of light
The light transmittance of the photovoltaic packaging adhesive film is tested by adopting a method in GB/T2410-2008 determination of light transmittance and haze of transparent plastics. And testing the light transmittance of the photovoltaic packaging adhesive film in the 380nm-1100nm wave band by using an ultraviolet spectrophotometer, wherein the testing area is an area containing all adhesive film layers in the middle of the packaging adhesive film, testing three repeated samples by using the same sample, and taking an average value of the obtained results.
Test results: as shown in Table 1 below
TABLE 1 results of Performance test of photovoltaic packaging films in examples 1-8 and comparative examples 1-4
As can be seen from the data in table 1:
the water vapor transmission rate of the packaging film in example 1 is much smaller than that of the packaging films of comparative examples 1 and 3. The water vapor transmission rate of the packaging film in example 6 was much smaller than that of the packaging films of comparative examples 2 and 4. In summary, the water vapor transmittance of the first adhesive film layer is smaller than that of the second adhesive film layer, and the width of the first adhesive film layer is larger than that of the second adhesive film layer, so that the water vapor transmittance of the packaging adhesive film is greatly reduced, and the water vapor barrier property of the packaging adhesive film is improved.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (10)
1. A photovoltaic packaging adhesive film, comprising:
a first adhesive film layer;
the second adhesive film layer is arranged on one side of the first adhesive film layer;
the water vapor transmittance of the first adhesive film layer is smaller than that of the second adhesive film layer, and the width of the first adhesive film layer is larger than that of the second adhesive film layer.
2. The photovoltaic packaging film of claim 1, wherein:
the photovoltaic packaging adhesive film further comprises an isolation layer, and the isolation layer is arranged between the first adhesive film layer and the second adhesive film layer.
3. The photovoltaic packaging film of claim 1, wherein:
the packaging adhesive film further comprises a third adhesive film layer, the third adhesive film layer is located on one side, far away from the first adhesive film layer, of the second adhesive film layer, and the water vapor transmittance of the third adhesive film layer is smaller than that of the second adhesive film layer.
4. The photovoltaic packaging film of claim 3, wherein:
the width of the third adhesive film layer is smaller than or equal to that of the first adhesive film layer.
5. The photovoltaic packaging film of claim 3, wherein:
the photovoltaic packaging adhesive film further comprises an isolation layer, wherein the isolation layer is arranged between the third adhesive film layer and the second adhesive film layer and between the first adhesive film layer and the second adhesive film layer.
6. The photovoltaic packaging film of claim 1, wherein:
the thickness of the first adhesive film layer is 0.1-0.3mm, and the thickness of the second adhesive film layer is 0.1-0.3mm.
7. A pair of photovoltaic packaging adhesive film, which is characterized by comprising:
the first adhesive film and the second adhesive film are respectively rolled, the water vapor transmittance of the first adhesive film is smaller than that of the second adhesive film, and the width of the first adhesive film is larger than that of the second adhesive film.
8. A photovoltaic module, characterized in that:
the photovoltaic module comprises a battery string, photovoltaic substrates arranged on two sides of the battery string and a packaging layer arranged between the battery string and the photovoltaic substrates;
the packaging layer comprises a first adhesive film portion and a second adhesive film portion attached to one side of the first adhesive film portion, the first adhesive film portion is attached to the battery string, the water vapor transmittance of the first adhesive film portion is smaller than that of the second adhesive film portion, and the size of the first adhesive film portion is larger than that of the second adhesive film portion.
9. The photovoltaic module of claim 8, wherein:
the packaging layer further comprises a third adhesive film portion, the third adhesive film portion is attached to one side, far away from the first adhesive film portion, of the second adhesive film portion, the water vapor transmittance of the third adhesive film portion is smaller than that of the second adhesive film portion, and the size of the third adhesive film portion is smaller than or equal to that of the first adhesive film portion.
10. The photovoltaic module of claim 8, wherein:
the encapsulation layer is made from the photovoltaic encapsulation film of any one of claims 1 to 6 or from the pair of photovoltaic encapsulation films of claim 7.
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| CN202321038348.0U CN220579171U (en) | 2023-05-04 | 2023-05-04 | Photovoltaic packaging adhesive film and photovoltaic module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321038348.0U CN220579171U (en) | 2023-05-04 | 2023-05-04 | Photovoltaic packaging adhesive film and photovoltaic module |
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