CN219513119U - Photovoltaic packaging material and photovoltaic module - Google Patents
Photovoltaic packaging material and photovoltaic module Download PDFInfo
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- CN219513119U CN219513119U CN202320584385.5U CN202320584385U CN219513119U CN 219513119 U CN219513119 U CN 219513119U CN 202320584385 U CN202320584385 U CN 202320584385U CN 219513119 U CN219513119 U CN 219513119U
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Abstract
The utility model relates to the technical field of photovoltaics. The utility model discloses a photovoltaic packaging material, which comprises a base film and an oxide deposition film, wherein the base film is arranged on at least one side of the oxide deposition film, and the ratio of the area of the oxide deposition film to the area of the base film is 0.5-1; the water vapor transmittance of the photovoltaic packaging material is less than or equal to 5 g/(m) 2 Day). The utility model also discloses a photovoltaic module. The photovoltaic packaging material improves the water vapor barrier property and solves the problem of lower water vapor barrier property of the existing photovoltaic packaging material.
Description
Technical Field
The utility model relates to the technical field of photovoltaics, in particular to a photovoltaic packaging material and a photovoltaic module.
Background
The common photovoltaic cell has poor stability and is easy to decompose under the conditions of humidity and illumination, so that the service efficiency of the device is reduced, and the service life of the cell is influenced. Different encapsulant materials are often used to improve the moisture barrier of photovoltaic cells.
However, in implementing the embodiments of the present utility model, the applicant has found that at least the following problems exist in the above-mentioned techniques: the existing photovoltaic packaging material has a general blocking effect on water vapor.
Disclosure of Invention
In order to solve the defects in the prior art, the embodiment of the utility model improves the water vapor barrier property of the photovoltaic packaging material by arranging the oxide deposition film which is deposited on the surface of the base film from the chemical vapor phase.
In one aspect, the embodiment of the utility model provides a photovoltaic packaging material, which comprises a base film and an oxide deposition film, wherein the base film is arranged on at least one side of the oxide deposition film, and the ratio of the area of the oxide deposition film to the area of the base film is 0.5-1; the water vapor transmittance of the photovoltaic packaging material is less than or equal to 5 g/(m) 2 ·day)。
Further, the ratio of the area of the oxide deposition film to the area of the base film is 0.6 to 0.9.
Further, the thickness of the oxide deposition film is 50-100nm.
Further, the surface of at least one side of the oxide deposition film is also provided with a microstructure, and the microstructure is a convex structure or a groove structure.
Further, the microstructure has a projection on the oxide deposition film in a direction perpendicular to the oxide deposition film, and the shape of the projection is at least one of a triangle, a circle, a diamond, a square, or an irregular shape.
Further, the microstructure is a convex structure, and the height of the microstructure is 1-10nm.
Further, both sides of the oxide deposition film are provided with a base film.
Further, the oxide deposition film is a silicon oxide deposition film or an aluminum oxide deposition film.
Further, the base film is at least one of an EVA film, a POE film, a PVB film, a PE film, an organosilicon film, an ionic polymer film or a cyclic polyolefin film.
Further, the base film is at least one of a PET film, a PA film or a PP film.
The utility model also provides a photovoltaic module, which comprises a battery piece and the photovoltaic packaging materials arranged on two sides of the battery piece.
Further, the battery piece is a perovskite battery piece or a perovskite-containing laminated battery piece.
According to the utility model, the oxide deposition film is arranged on the base film, so that the water vapor barrier property of the photovoltaic packaging material is improved, the probability of degradation of the battery piece caused by water vapor entering the photovoltaic module is reduced, the stability of the photovoltaic module is enhanced, and the service life of the photovoltaic module is prolonged.
Drawings
Fig. 1 is a schematic structural view of a photovoltaic module according to an embodiment of the present utility model.
Fig. 2 is a schematic structural diagram of a photovoltaic packaging material according to an embodiment of the present utility model.
Fig. 3 is a schematic structural view of an oxide deposited film according to an embodiment of the present utility model.
Fig. 4 is a schematic structural view of an oxide deposition film according to another embodiment of the present utility model.
Fig. 5 is a schematic view showing a structure of an oxide deposition film according to another embodiment of the present utility model.
Fig. 6 is a schematic structural view of the photovoltaic packaging material of comparative example 1.
In the figure: the photovoltaic module 100, the cell 11, the photovoltaic packaging material 12, the base film 121, the oxide deposition film 122, the microstructure 1221, and the photovoltaic substrate 13.
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.
In order to solve the problem that the existing photovoltaic packaging material has poor water vapor barrier property, the oxide deposition film is arranged on the base film to improve the water vapor barrier property of the photovoltaic packaging material, and the problem that the existing photovoltaic packaging material has low water vapor barrier property is solved.
As shown in fig. 1, an embodiment of the present utility model provides a photovoltaic module 100. The photovoltaic module 100 includes a battery piece 11, a photovoltaic packaging material 12 and a photovoltaic substrate 13, the photovoltaic substrate 13 is disposed on two sides of the battery piece 11, and the photovoltaic substrate 13 plays a role in protecting the battery piece 11. The photovoltaic packaging material 12 is disposed between the battery piece 11 and the photovoltaic substrate 13, and the photovoltaic packaging material 12 bonds the battery piece 11 and the photovoltaic substrate 13 together. The battery piece 11 can be a perovskite battery piece or a perovskite-containing laminated battery piece.
As shown in fig. 2, an embodiment of the present utility model provides a photovoltaic encapsulation material 12. The photovoltaic packaging material 12 comprises a base film 121 and an oxide deposition film 122, wherein the base film 121 is arranged on at least one side of the oxide deposition film 122, and the ratio of the area of the oxide deposition film 122 to the area of the base film 121 is 0.5-1; the moisture vapor transmission rate of the photovoltaic packaging material 12 is 5 g/(m) or less 2 Day). The oxide deposition film 122 has excellent water vapor barrier property, and the deposition of the oxide deposition film 122 on at least one side of the surface of the base film 121 greatly improves the water vapor barrier property of the photovoltaic packaging material 12.
As a specific embodiment, the ratio of the area of the oxide deposition film 122 to the area of the base film 121 is set to 0.5 to 1, ensuring that the oxide deposition film 122 has a sufficient area and the area of the oxide deposition film 122 does not exceed the area of the base film 121. In order to ensure better interfacial adhesion between the encapsulation material and the battery sheet or the substrate, the ratio of the area of the oxide deposition film 122 to the area of the base film 121 is preferably set to 0.6 to 0.9. The oxide deposition film 122 and the base film 121 in the photovoltaic packaging material 12 have water vapor blocking effect, and under the combined action of the oxide deposition film 122 and the base film 121, the water vapor transmittance of the photovoltaic packaging material 12 is less than or equal to 5 g/(m) 2 Day), the photovoltaic packaging material 12 can have enough water vapor blocking protection effect on the battery piece 11, and the performance and the service life of the photovoltaic module 100 are guaranteed. In particular, perovskite or laminated perovskite-containing cells are very sensitive to moisture, and perovskite-containing cells have poor stability and are extremely susceptible to decomposition in the presence of moisture. Thus, the use of the photovoltaic encapsulation material 12 comprising the oxide deposition film 122 can better function as a barrier to moisture vapor for perovskite cells or perovskite-containing laminatesThe erosion of the cells improves the service life of the photovoltaic module 100.
As a specific embodiment, oxide deposited film 122 has a thickness of 50-100nm. When the thickness of the oxide deposition film 122 is less than 50nm, it may result in insufficient moisture barrier properties, affecting the moisture barrier properties of the photovoltaic encapsulant 12. When the thickness of the oxide deposition film 122 is greater than 100nm, the oxide deposition film 122 may crack due to the excessive stress, which affects the service life of the photovoltaic packaging material 12. The thickness of the oxide deposition film is set to 50-100nm, so that the water vapor barrier property of the photovoltaic packaging material 12 is ensured, and the service life of the photovoltaic packaging material 12 is prolonged.
As a specific embodiment, as shown in fig. 3, the surface of at least one side of the oxide deposition film 122 is further provided with a microstructure 1221, and the microstructure 1221 is a bump structure or a groove structure. In the embodiment of the utility model, the microstructure 1221 is arranged on the surface of the oxide deposition film 122, so that the contact area between the oxide deposition film 122 and the base film 121 can be increased, and the connection effect between the oxide deposition film 122 and the base film 121 is further enhanced. At the same time, the microstructure 1221 can improve the propagation path of the modulated light, improve the reflectivity of the light on the surface of the oxide deposition film 122, and further improve the light utilization of the assembly.
As a specific embodiment, as shown in fig. 3, 4, and 5, the microstructure 1221 has a projection on the oxide deposition film 122 in a direction perpendicular to the oxide deposition film 122, and the projected shape is at least one of a triangle (as shown in fig. 3), a hexagon (as shown in fig. 4), a square (as shown in fig. 5), a diamond, or an irregular shape. The microstructures 1221 take different shapes, enhancing the contact area and the connection effect of the base film 121 and the oxide deposition film 122. The microstructure 1221 makes the adhesion between the oxide deposition film 122 and the base film 121 stronger, and the combination is firmer, so as to prevent the oxide deposition film 122 from peeling or loosening when the photovoltaic packaging material 12 is used, and influence the stability of the photovoltaic module 100.
As a specific embodiment, as shown in fig. 3, 4 and 5, in the embodiment of the present utility model, the microstructure 1221 is a convex structure, and the height of the microstructure 1221 is 1-10nm. The contact area between the base film 121 and the oxide deposition film 122 is too small when the height of the microstructure 1221 is less than 1nm, and the distance between the base film 121 and the oxide deposition film 122 is too large when the height of the microstructure 1221 is greater than 10nm to form a void, thereby reducing the contact area. That is, when the height of the microstructure 111 is less than 1nm or more than 10nm, the contact area between the oxide deposition film 122 and the base film 121 is smaller than that when the height of the microstructure 111 is 1 to 10nm. The contact area affects the bonding capability of the base film 121 and the oxide deposition film 122, so that the bonding strength of the microstructure 1221 at a high level of 1-10nm can be maintained, the oxide deposition film 122 and the base film 121 are prevented from loosening or falling off, and the stability of the photovoltaic module 100 is ensured.
As one embodiment, both sides of the oxide deposition film 122 are provided with the base film 121 in the embodiment of the present utility model. The base film 121 has a strong adhesive property, and can well adhere the cell 11 and the photovoltaic substrate 13 on both sides of the photovoltaic module 100. The base films 121 are arranged on two sides of the oxide deposition film 122, so that the bonding effect of the photovoltaic packaging material 12 and the battery piece 11 on the photovoltaic module 100 can be ensured, and the photovoltaic packaging material 12 is prevented from peeling and falling off in the using process of the photovoltaic module 100. On the other hand, by arranging the base films 121 on both sides of the oxide deposition film 122, the oxide deposition film 122 is wrapped by the base films 121, so that the erosion of the external environment to the oxide deposition film 122 is reduced, the service life of the oxide deposition film 122 is prolonged, and the service life of the photovoltaic packaging material 12 is prolonged.
As one implementation, the oxide deposition film 122 is a silicon oxide deposition film or an aluminum oxide deposition film in the embodiment of the present utility model. The oxide deposition film 122 prepared using silicon oxide or aluminum oxide has a better barrier effect against oxygen and water vapor than other oxides, and has an advantage of excellent water vapor barrier property, and the like. The oxide deposition film 122 prepared by using silicon oxide or aluminum oxide enhances the water vapor barrier property of the photovoltaic packaging material 12, and can improve the service life and photoelectric conversion efficiency of the photovoltaic module 100.
In one embodiment, the base film 121 is at least one of an EVA film, a POE film, a PVB film, a PE film, a silicone film, an ionomer film, or a cyclic polyolefin film. The material is easy to process and good in adhesion with the battery pieces 11 or the photovoltaic substrates 13 on two sides of the photovoltaic module 100, and at least one of the materials is used as the base film 121, so that the base film 121 can be more tightly adhered to the battery pieces 11 of the photovoltaic module 100, further, the photovoltaic packaging material 12 is prevented from peeling or falling off when the photovoltaic module 100 is used, and the stability of the photovoltaic module is improved.
As an embodiment, in the embodiment of the present utility model, the base film 121 is at least one of a PET film, a PA film, or a PP film. The material has the advantages of strong plasticity, moisture resistance, low water absorption, strong chemical corrosion resistance, strong impact strength, electric insulation and the like. The use of at least one material as the base film 121 facilitates the processing of the base film 121, provides structural support for the photovoltaic packaging material 12 after processing and molding, increases the strength of the photovoltaic packaging material 12, provides physical insulation and physical protection for the photovoltaic packaging material 12, and provides electrical insulation and moisture barrier. The above materials may also provide excellent corrosion resistance, etc. for the photovoltaic module 100. The use of the above material as the base film 121 improves the mechanical strength, moisture barrier property, corrosion resistance, and the like of the photovoltaic packaging material 12, and improves the stability of the photovoltaic module 100.
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
As shown in fig. 1, a photovoltaic packaging material 12 includes an oxide deposition film 122 and a base film 121 on both sides of the oxide deposition film 12. The thickness of the silicon oxide deposited film is 50nm, the base film 121 is a PE film, and the silicon oxide deposited film is provided with a convex triangular microstructure 1221 shown in FIG. 3, and the height of the microstructure 1221 is 1nm. The ratio of the area of the oxide deposition film 122 to the area of the base film 121 was set to 1.
Example 2
The photovoltaic packaging material 12 includes an oxide deposition film 122 and base films 121 on both sides of the oxide deposition film 12. The thickness of the silicon oxide deposited film is 50nm, the base film 121 is a PE film, and the silicon oxide deposited film is provided with a convex triangular microstructure 1221 shown in FIG. 3, and the height of the microstructure 1221 is 1nm. The ratio of the area of the oxide deposition film 122 to the area of the base film 121 was set to 0.6.
Example 3
The photovoltaic packaging material 12 includes an oxide deposition film 122 and base films 121 on both sides of the oxide deposition film 12. The thickness of the silicon oxide deposited film is 50nm, the base film 121 is a PE film, and the silicon oxide deposited film is provided with a convex triangular microstructure 1221 shown in FIG. 3, and the height of the microstructure 1221 is 1nm. The ratio of the area of the oxide deposition film 122 to the area of the base film 121 was set to 0.9.
Example 4
The photovoltaic packaging material 12 includes an oxide deposition film 122 and base films 121 on both sides of the oxide deposition film 12. The thickness of the silicon oxide deposited film is 50nm, the base film 121 is a PE film, and the silicon oxide deposited film is provided with a convex triangular microstructure 1221 shown in FIG. 3, and the height of the microstructure 1221 is 1nm. The ratio of the area of the oxide deposition film 122 to the area of the base film 121 was set to 0.5.
Example 5
As shown in fig. 1, a photovoltaic packaging material 12 includes an oxide deposition film 122 and a base film 121 on both sides of the oxide deposition film 12. The thickness of the silicon oxide deposited film is 100nm, the base film 121 is a PE film, the silicon oxide deposited film is provided with a convex triangular microstructure 1221 as shown in FIG. 3, and the height of the microstructure 1221 is 10nm.
Example 6
As shown in fig. 1, a photovoltaic packaging material 12 includes an oxide deposition film 122 and a base film 121 on both sides of the oxide deposition film 12. The thickness of the silicon oxide deposited film is 75nm, the base film 121 is a PE film, and the silicon oxide deposited film is provided with a convex triangular microstructure 1221 shown in FIG. 3, and the height of the microstructure 1221 is 5.5nm.
Example 7
As shown in fig. 1, a photovoltaic packaging material 12 includes an oxide deposition film 122 and a base film 121 on both sides of the oxide deposition film 12. The thickness of the silicon oxide deposited film is 50nm, the base film 121 is a PE film, the silicon oxide deposited film is provided with a concave triangular microstructure 1221 shown in FIG. 3, and the height of the microstructure 1221 is 1nm.
Example 8
As shown in fig. 1, a photovoltaic packaging material 12 includes an oxide deposition film 122 and a base film 121 on both sides of the oxide deposition film 12. The thickness of the silicon oxide deposited film is 50nm, the base film 121 is a PE film, and the silicon oxide deposited film is provided with a raised hexagonal microstructure 1221 as shown in FIG. 4, and the height of the microstructure 1221 is 1nm.
Example 9
As shown in fig. 1, a photovoltaic packaging material 12 includes an oxide deposition film 122 and a base film 121 on both sides of the oxide deposition film 12. The thickness of the silicon oxide deposited film is 50nm, the base film 121 is a POE film, and the surface of the silicon oxide deposited film is smooth without the microstructure 1221.
Example 10
As shown in fig. 1, a photovoltaic packaging material 12 includes an oxide deposition film 122 and a base film 121 on both sides of the oxide deposition film 12. The thickness of the silicon oxide deposited film is 50nm, the base film 121 is a PE film, the silicon oxide deposited film is provided with a concave square microstructure 1221 as shown in FIG. 5, and the height of the microstructure 1221 is 1nm.
Comparative example 1
As shown in fig. 6, in the photovoltaic packaging material 12, the photovoltaic packaging material 12 has only the base film 121, and the base film 121 is a POE film.
Comparative example 2
The photovoltaic packaging material 12 includes an oxide deposition film 122 and base films 121 on both sides of the oxide deposition film 12. The thickness of the silicon oxide deposited film is 50nm, the base film 121 is a PE film, and the silicon oxide deposited film is provided with a convex triangular microstructure 1221 shown in FIG. 3, and the height of the microstructure 1221 is 1nm. The ratio of the area of the oxide deposition film 122 to the area of the base film 121 was set to 0.3.
1. Performance test and method
1. Water vapor transmission rate: the packaging materials of examples 1 to 10 and comparative examples 1 to 2 were tested for water vapor transmission rate by the method of GB/T30112-2013 method for measuring moisture sensor of Plastic film and sheet Water vapor transmission rate.
2. And (3) manufacturing a peel strength sample of the packaging material and the battery piece: glass with the thickness of 3mm, a single-chip crystal silicon battery, packaging materials and a backboard are put into a vacuum laminating machine according to the sequence of glass/F406 PS/battery/isolation strips/packaging materials backboard, and laminated and cured for 18min at 145 ℃. The test is carried out on a tensile machine, the peeling speed is 100mm/min, and the peeling strength value is recorded and used for representing the interfacial adhesion force between the packaging material and the battery piece.
2. Test results
The results of the performance tests are shown in Table 1 below
TABLE 1 results of Performance test of photovoltaic encapsulation material 12 in examples 1-10 and comparative examples 1-2
As can be seen from the data in table 1 above:
examples 1 to 10 have a water vapor transmission rate of 3.0 (g/m 2 24 h) was about 8.5 (g/m) relative to the water vapor transmission rate in comparative example 1 2 24 h) is much smaller, only about one third of that of comparative example 1. The method for arranging the oxide deposition film on the base film can greatly reduce the water vapor transmittance of the photovoltaic packaging material and improve the water vapor barrier property of the photovoltaic packaging material. The ratio of the area of the oxide deposition film of the packaging material to the area of the base film is set to be 0.5-1, and the packaging material has good water vapor barrier property and interface binding force.
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 material, characterized in that:
the photovoltaic packaging material comprises a base film and an oxide deposition film, wherein the base film is arranged on at least one side of the oxide deposition film, and the ratio of the area of the oxide deposition film to the area of the base film is 0.5-1; the water vapor transmittance of the photovoltaic packaging material is less than or equal to 5 g/(m) 2 ·day)。
2. The photovoltaic packaging material of claim 1, wherein:
the surface of at least one side of the oxide deposition film is also provided with a microstructure, and the microstructure is a convex structure or a groove structure.
3. The photovoltaic packaging material of claim 2, wherein:
the microstructure has a projection on the oxide deposition film in a direction perpendicular to the oxide deposition film, the projection having at least one of a triangle, a circle, a diamond, a square, or an irregular shape.
4. The photovoltaic packaging material of claim 2, wherein:
the microstructure is a convex structure, and the height of the microstructure is 1-10nm.
5. The photovoltaic packaging material of claim 1, wherein:
the thickness of the oxide deposition film is 50-100nm.
6. The photovoltaic packaging material of claim 1, wherein:
the oxide deposition film is a silicon oxide deposition film or an aluminum oxide deposition film.
7. The photovoltaic packaging material of claim 1, wherein:
the base film is at least one of EVA film, POE film, PVB film, PE film, organic silicon film, ionic polymer film or cyclic polyolefin film.
8. The photovoltaic packaging material of claim 1, wherein:
the base film is at least one of a PET film, a PA film or a PP film.
9. A photovoltaic module, characterized in that:
the photovoltaic module comprises a battery piece and the photovoltaic packaging material according to any one of claims 1-8 arranged on two sides of the battery piece.
10. The photovoltaic module of claim 9, wherein:
the battery piece is a perovskite battery piece or a perovskite-containing laminated battery piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320584385.5U CN219513119U (en) | 2023-03-23 | 2023-03-23 | Photovoltaic packaging material and photovoltaic module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320584385.5U CN219513119U (en) | 2023-03-23 | 2023-03-23 | Photovoltaic packaging material and photovoltaic module |
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| CN219513119U true CN219513119U (en) | 2023-08-11 |
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| CN202320584385.5U Active CN219513119U (en) | 2023-03-23 | 2023-03-23 | Photovoltaic packaging material and photovoltaic module |
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