CN210040222U - Solar cell module - Google Patents
Solar cell module Download PDFInfo
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- CN210040222U CN210040222U CN201920781499.2U CN201920781499U CN210040222U CN 210040222 U CN210040222 U CN 210040222U CN 201920781499 U CN201920781499 U CN 201920781499U CN 210040222 U CN210040222 U CN 210040222U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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Abstract
The utility model provides a solar module, solar module includes light-transmitting element, preceding encapsulated layer, a plurality of spaced solar cell each other, back encapsulated layer and the encapsulation backplate that sets gradually along its thickness direction, a plurality of spaced solar cell each other form the solar cell array, wherein: in the plane direction of the solar cell module, the area of the solar cell array is smaller than that of the packaging back sheet, and the packaging back sheet has a diffuse reflection layer on the surface of the part of the solar cell array extending beyond the solar cell array, which faces the solar cell array; and the solar cell module further comprises a light guiding film disposed on the surface of the package back sheet inside the solar cell module. According to the utility model discloses a solar module can improve solar module's power by a wide margin.
Description
Technical Field
The utility model relates to a photovoltaic cell technical field specifically, relates to a solar module.
Background
With the increasing environmental problems, the development and application of clean energy is increasingly urgent. Solar energy has received increasing attention as a clean energy source. A solar cell is a device for generating electricity by using solar energy.
A solar cell commonly used at present includes a cell body encapsulated in an encapsulation cover sheet and an encapsulation back sheet. The light irradiates the light-facing surface of the battery body through the packaging cover plate, and the battery body converts the light energy in the light into electric energy.
At present, the power generation efficiency of a solar cell module is low. Currently, numerous methods have been tried to further improve the power generation efficiency of the solar cell module, including providing a light guiding film in the solar cell module to reflect incident light onto the light-facing surface of the solar cell, thereby improving the power generation efficiency.
However, how to further improve the power generation efficiency of the solar cell module is still one of the technical problems to be solved in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a solar module, solar module can realize higher solar module power.
Specifically, the utility model provides a solar module, solar module includes printing opacity component, preceding encapsulated layer, a plurality of spaced solar cell each other, back encapsulated layer and the encapsulation backplate that sets gradually along its thickness direction, a plurality of spaced solar cell each other form the solar cell array, wherein:
in the plane direction of the solar cell module, the area of the solar cell array is smaller than that of the packaging back sheet, and the packaging back sheet has a diffuse reflection layer on the surface of the part of the solar cell array extending beyond the solar cell array, which faces the solar cell array; and is
The solar cell module further comprises a light guide film, and the light guide film is arranged on the surface of the packaging back plate, which is located inside the solar cell module.
According to certain preferred embodiments of the present invention, the diffuse reflective layer is a white film.
According to certain preferred embodiments of the present invention, the white film is a white polyethylene terephthalate film or a white polypropylene film, or a white polyimide film.
According to certain preferred embodiments of the present invention, the thickness of the diffuse reflective layer is in the range of 20 to 200 μm.
According to certain preferred embodiments of the present invention, the packaging back sheet extends beyond the solar cell array at all four edges of the solar cell array.
According to certain preferred embodiments of the present invention, the width of the portion of the packaging backsheet extending beyond the solar cell array is in the range of 1 to 3 cm.
According to certain preferred embodiments of the present invention, the diffuse reflective layer has a diffuse structural feature on a surface thereof.
According to certain preferred embodiments of the present invention, the diffusing structural features are a plurality of protrusions, a plurality of recesses, or a combination thereof.
According to certain preferred embodiments of the present invention, the diffusive reflective layer is fixed to the surface of the packaging backsheet by an adhesive layer.
According to certain preferred embodiments of the present invention, the adhesive layer is an ethylene-vinyl acetate copolymer adhesive layer, a polyolefin resin adhesive layer, a polypropylene oxide adhesive layer, a polyvinyl butyral adhesive layer, a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer adhesive layer, an ethylene-tetrafluoroethylene copolymer adhesive layer, a polyvinylidene fluoride adhesive layer, a polyurethane adhesive layer, a polymethyl methacrylate adhesive layer, a polyimide adhesive layer, an acrylic adhesive layer, or an acrylate adhesive layer.
According to certain preferred embodiments of the present invention, the thickness of the adhesive layer is between 10 and 100 μm.
According to certain preferred embodiments of the present invention, the diffuse reflection layer is further provided with an ultraviolet-proof layer.
According to certain preferred embodiments of the present invention, the package back plate is a transparent package back plate.
According to certain preferred embodiments of the present invention, the transparent packaging backsheet is a glass backsheet or a transparent polymer backsheet.
According to certain preferred embodiments of the present invention, the light guide film is fixed to the surface of the back sheet at the inside of the solar cell module.
According to the utility model discloses a solar module's advantage lies in: by providing a diffuse reflective layer on the surface of the portion of the back sheet extending beyond the solar cell array facing the solar cell array and at the same time providing a light guiding film inside the solar cell module, the power of the solar cell module can be greatly increased.
Drawings
Fig. 1 shows a top perspective view of a solar module according to an embodiment of the present invention; and
FIG. 2 shows a cross-sectional view of one embodiment of portion A-A' shown in FIG. 1.
Reference numerals:
1: a solar cell module; 2: a light-transmitting element; 3: a front encapsulation layer; 4: a solar cell; 5: a rear encapsulation layer; 6: packaging the back plate; 7: a solar cell array; 8: a portion of the package back sheet extending beyond the solar cell array; 9: a diffuse reflective layer; 10: light guide film
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It will be appreciated that other embodiments are contemplated and may be made without departing from the scope or spirit of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense.
To improve the power generation efficiency of a solar cell module, one solution is to redirect light from inactive regions of the photovoltaic module (e.g., gaps between individual solar cells (accounting for about 3.3% of the total area of the solar cell array), and edges of the back sheet of the encapsulant that extend beyond the edges of the solar cell array (accounting for about 6.8% of the total area of the solar cell array)) onto the solar cells. According to the technical scheme of the utility model, when the encapsulation backplate is in solar module's inside provide the leaded light membrane on the surface, provide the diffuse reflection layer in the edge of the encapsulation backplate that extends beyond the solar array edge to improve solar module's generating efficiency by a wide margin. According to the utility model discloses a research result proves, specific position in solar module provides leaded light membrane and diffuse reflection layer simultaneously and has certain synergism in regard to solar module's the increase of generating efficiency.
Specifically, the utility model provides a solar module, solar module includes printing opacity component, preceding encapsulated layer, a plurality of spaced solar cell each other, back encapsulated layer and the encapsulation backplate that sets gradually along its thickness direction, a plurality of spaced solar cell each other form the solar cell array, wherein:
in the plane direction of the solar cell module, the area of the solar cell array is smaller than that of the packaging back sheet, and the packaging back sheet has a diffuse reflection layer on the surface of the part of the solar cell array extending beyond the solar cell array, which faces the solar cell array; and is
The solar cell module further comprises a light guide film, and the light guide film is arranged on the surface of the packaging back plate, which is located inside the solar cell module.
According to the disclosure of the present invention, the "diffuse reflection layer" refers to a reflection layer that reflects light incident to a portion of the package back plate of the solar cell module extending beyond the solar cell array to the solar cell by means of diffuse reflection to improve the power generation efficiency.
According to the technical scheme of the utility model, through in the inside of encapsulation backplate is in solar module provide the leaded light membrane on the surface, extend at the encapsulation backplate and exceed the orientation of solar cell array's part solar cell array provides the diffuse reflection layer on the surface to incide on the light of encapsulation backplate edge reflects solar cell with diffuse reflection's mode, improve solar module power from this.
Fig. 1 shows a top perspective view of a solar module 1 according to an embodiment of the invention in the direction of its plane. The solar cell module 1 comprises a light-transmitting element 2, a front packaging layer 3, a plurality of solar cells 4, a rear packaging layer 5 and a packaging back plate 6 which are arranged in sequence along the thickness direction of the solar cell module. Since the light-transmissive element 2, the front encapsulation layer 3, the rear encapsulation layer 5 and the package back plate 6 are stacked on each other in a top perspective view and are not specifically shown, please refer to fig. 2 for specific configurations of the light-transmissive element 2, the front encapsulation layer 3, the rear encapsulation layer 5 and the package back plate 6.
As shown in fig. 1, the plurality of solar cells 4 spaced apart from each other form a solar cell array 7. Specifically, as shown in fig. 1, according to an embodiment of the present invention, the solar cell array 7 is composed of 60 solar cells 4 arranged in an array and spaced apart from each other. In the planar direction of the solar cell module 1, the area of the solar cell array 7 is smaller than the area of the packaging back sheet 6, and the packaging back sheet 6 has a diffuse reflection layer 9 on the surface facing the solar cell array of a portion 8 (i.e., an edge-shaded portion shown in the figure) extending beyond the solar cell array 7.
Fig. 2 shows a cross-sectional view of an embodiment of the portion a-a' shown in fig. 1. As shown in fig. 2, the solar cell module 1 includes a light-transmitting member 2, a front encapsulant layer 3, a plurality of solar cells 4 spaced apart from each other, a rear encapsulant layer 5, and an encapsulant back sheet 6, which are sequentially arranged in a thickness direction T thereof. In the planar direction of the solar module 1, the surface of the part 8 of the packaging backsheet 6 extending beyond the solar cell array facing the solar cell array has a diffuse reflective layer 9. The plurality of solar cells 4 spaced apart from each other form an array. The solar module 1 further comprises a light guiding film 10. Light irradiated onto the light guide film 10 is reflected and finally irradiated onto the light facing surface of the solar cell 4 in the direction a. The light guiding film 10 is typically adhered by an adhesive layer on the backlight side surface of the solar cell or on the surface of the back sheet at the inside of the solar cell module.
Preferably, the diffuse reflective layer is a white film. A white-surfaced film is advantageous for diffuse reflection of light. More preferably, the white film is a white polymer film. Specifically, the white film is a white polyethylene terephthalate (PET) film or a white polypropylene (PP) film. In order to achieve a good diffuse reflection effect for light, the thickness of the diffuse reflection layer is in the range of 20 to 200 μm, preferably in the range of 20 to 150 μm, and more preferably in the range of 20 to 100 μm. The specific products of the white film that can be used in the present invention include: white PET film of 50 μm thickness from Dupont hongji film Co., Ltd; a 125 μm thick white polypropylene (PP) film from Lingmei New Material Co., Ltd, Dongguan, Guangdong province; yangzhou wished a white Polyimide (PI) film of 25 μm thickness from scientific insulation.
According to the technical scheme of the utility model, the encapsulation backplate can be in solar array's an edge, two edges or three edge extend and exceed solar array. Preferably, in order to achieve good power gain effects, the encapsulant back sheet extends beyond the solar cell array at all four edges of the solar cell array. That is, the orthographic projection of the solar cell array on the packaging backsheet falls within the packaging backsheet.
Preferably, the width of the portion of the encapsulant back sheet extending beyond the solar cell array is in the range of 1 to 3cm, preferably in the range of 1 to 2 cm. Controlling the width within the above range enables a power gain to be achieved while effectively reducing a risk of a creep of the solar cell module.
According to the technical scheme of the utility model, in order to increase the diffuse reflection of diffuse reflection layer, diffuse reflection layer orientation solar cell array optionally has the diffusion structural feature portion that is favorable to the diffuse reflection effect on the surface. The specific configuration and dimensions of the diffusing structural features may be chosen reasonably by those skilled in the art for the purpose of achieving a diffuse reflective effect. Preferably, the diffusing structural features are a plurality of protrusions (dots), a plurality of recesses (pits), or a combination thereof.
According to the technical scheme of the utility model, diffuse reflection layer passes through the adhesive layer to be fixed to the packaging backplate on the surface. The adhesive may be a pressure sensitive adhesive or a hot melt adhesive. Preferably, the adhesive layer is an ethylene-vinyl acetate copolymer adhesive layer, a polyolefin resin adhesive layer, a polypropylene oxide adhesive layer, a polyvinyl butyral adhesive layer, a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer adhesive layer, an ethylene-tetrafluoroethylene copolymer adhesive layer, a polyvinylidene fluoride adhesive layer, a polyurethane adhesive layer, a polymethyl methacrylate adhesive layer, a polyimide adhesive layer, an acrylic adhesive layer, or an acrylate adhesive layer. Specifically, the adhesive layer according to the present invention was formed by applying the ethylene-vinyl acetate copolymer adhesive disclosed in CN 201710559405.2. Preferably, the thickness of the adhesive layer is between 10-100 μm, preferably 10-50 μm.
Preferably, in order to improve aging resistance of the diffuse reflection layer, an ultraviolet-proof layer is further disposed on the diffuse reflection layer.
Preferably, the package back plate is a transparent package back plate. The transparent packaging back plate is a glass back plate or a transparent polymer back plate. By using a transparent packaging back sheet, light is allowed to enter the solar cell module from the packaging back sheet side of the solar cell module and to irradiate the solar cell sheet through reflection, thereby further improving the power of the solar cell module.
In order to improve the power generation efficiency of the solar cell module, according to the technical scheme of the utility model, must provide the leaded light membrane in the inside specific position of solar cell module. When the solar module is used for generating electricity, light rays can irradiate on the optical structure of the light guide film after passing through the light transmission element. The optical structure of the light directing film can reflect incident light and change the direction of light propagation. Because the light is incident from top to bottom, the light guide film reflects the light upwards towards the light-transmitting element. When light reflected by the light guide film enters the light-transmitting element and is transmitted to the interface between the light-transmitting element and the air in the light-transmitting element, the light is reflected, the transmission direction of the light is changed again, and finally the light irradiates the light-facing surface of the solar cell. Since the solar cell generates electricity using the light, the power generation efficiency is improved. The light guiding film is generally disposed on the backlight side surface of the solar cell or on the surface of the package back sheet at the inside of the solar cell module.
According to the utility model discloses a research result proves, when specific position in solar module provides leaded light membrane and diffuse reflection layer simultaneously, can improve solar module's generated power by a wide margin, the total of power gain when its effect is better than alone providing any in leaded light membrane or the diffuse reflection layer even far away. Therefore, there is a certain synergistic effect in providing both the light guiding film and the diffuse reflection layer at a specific position within the solar cell module with respect to an increase in the power generation efficiency of the solar cell module.
The specific shape of the solar cell is not particularly limited and may be specifically selected according to actual needs among the types of shapes generally employed in the art. Preferably, the solar cells each have a square shape or a rectangular shape.
The utility model discloses in, there is not special regulation to how to set up the leaded light membrane on the encapsulation backplate. For example, as a specific embodiment, each of the light guide films is fixed to the surface of the back sheet at the inside of the solar cell module by an adhesive or an adhesive tape.
The utility model discloses in, do not do special restriction to the concrete structure of leaded light membrane. For convenience of manufacturing, it is preferable that each of the light guide films further includes a base layer, wherein a concave-convex light reflecting structure is disposed on the base layer.
The utility model discloses in, the leaded light membrane can also include the adhesive layer, this adhesive layer with concave convex reflecting structure sets up the both sides at basement layer thickness direction respectively. The light guiding film may be bonded on the surface of the back sheet at the inside of the solar cell module using an adhesive layer. The adhesive may be a pressure sensitive adhesive or a hot melt adhesive.
The present invention is not limited to the specific materials of the front and rear sealing layers. For example, the front and back encapsulant layers may be made using an ethylene vinyl acetate (i.e., EVA) material. The front encapsulation layer and the rear encapsulation layer may be formed of the same material or different materials.
Specifically, the present invention includes the following technical contents:
1. the utility model provides a solar module, solar module includes the printing opacity component, preceding encapsulated layer, a plurality of spaced solar cell each other, back encapsulated layer and the encapsulation backplate that set gradually along its thickness direction, a plurality of spaced solar cell each other form solar cell array, wherein:
in the plane direction of the solar cell module, the area of the solar cell array is smaller than that of the packaging back sheet, and the packaging back sheet has a diffuse reflection layer on the surface of the part of the solar cell array extending beyond the solar cell array, which faces the solar cell array; and is
The solar cell module further comprises a light guide film, and the light guide film is arranged on the surface of the packaging back plate, which is located inside the solar cell module.
2. The solar cell module according to the above embodiment 1, wherein the diffuse reflection layer is a white film.
3. The solar cell module according to the above embodiment 2, wherein the white film is a white polyethylene terephthalate film, a white polypropylene film, or a white polyimide film.
4. The solar cell module according to the above embodiment 1, wherein the thickness of the diffuse reflection layer is in the range of 20 to 200 μm.
5. The solar cell module according to the above embodiment 1, wherein the encapsulant back sheet extends beyond the solar cell array at all four edges of the solar cell array.
6. The solar cell module according to the above embodiment 1, wherein the width of the portion of the encapsulant back sheet extending beyond the solar cell array is in the range of 1 to 3 cm.
7. The solar cell module of embodiment 1 above, wherein the diffusive reflective layer has diffusive structural features on a surface thereof.
8. The solar cell module of embodiment 7 above, wherein the diffusing structural features are a plurality of protrusions, a plurality of recesses, or a combination thereof.
9. The solar cell module according to the above embodiment 1, wherein the diffuse reflection layer is fixed onto the surface of the packaging backsheet by an adhesive layer.
10. The solar cell module according to the above 9-th embodiment, wherein the adhesive layer is an ethylene-vinyl acetate copolymer adhesive layer, a polyolefin resin adhesive layer, a polypropylene oxide adhesive layer, a polyvinyl butyral adhesive layer, a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer adhesive layer, an ethylene-tetrafluoroethylene copolymer adhesive layer, a polyvinylidene fluoride adhesive layer, a polyurethane adhesive layer, a polymethyl methacrylate adhesive layer, a polyimide adhesive layer, an acrylic adhesive layer, or an acrylate adhesive layer.
11. The solar cell module according to the above 9 th embodiment, wherein the thickness of the adhesive layer is between 10-100 μm.
12. The solar cell module according to embodiment 1 above, wherein the diffuse reflection layer is further provided with an ultraviolet-proof layer thereon.
13. The solar cell module according to the above embodiment 1, wherein the packaging back sheet is a transparent packaging back sheet.
14. The solar cell module according to the above 13 embodiment, wherein the transparent encapsulating backsheet is a glass backsheet or a transparent polymer backsheet.
15. The solar cell module according to the above embodiment 1, wherein the light guiding film is fixed to a surface of the back sheet at an inside of the solar cell module.
Examples
The following examples and comparative examples are provided to specifically illustrate the technical effects of the present invention. It should be noted, however, that the examples and comparative examples do not limit the scope of the present invention in any way.
According to example 1 of the present invention, a solar cell module is prepared, a top perspective view of which is shown in fig. 1, and a cross-sectional view of a-a' portion shown in fig. 1 is shown in fig. 2. Specifically, an array of solar cells 4 with a thickness of 0.2mm (where the cell gap is 3mm and the cell string gap is 3mm) is employed and encapsulated with a front encapsulant layer 3 with a thickness of 0.5mm and a rear encapsulant layer 5 with a thickness of 0.5 mm. The light-transmitting element 2 was made of solar high-light-transmitting patterned glass, and the transparent back sheet (a transparent solar cell back film having a thickness of 300 μm, manufactured by new photovoltaic materials ltd, suzhou) was used to make the transparent package back sheet 6. The transparent back sheet 6 has a light guide film 10 (BC 81 manufactured by 3M innovative limited, which has a three-layer structure in which a first layer is a metal reflective layer, a second layer is a micro-structured layer, and a third layer is an adhesive layer) on a side facing the solar cell 4 corresponding to the cell gap and the cell string gap. On the surface of the portion of the transparent packaging backsheet 6 extending beyond the solar cell array 7 facing the solar cell array 7, there is a diffuse reflective layer (white film) 9 (50 μm thick white polyethylene terephthalate (PET) film from dupont hongji film limited, foshan). According to IEC61215 under standard test conditions (AM1.5, 25 ℃, 1000W/m)2) The measured power of the solar module is 379.2W, and the power gain of the module can reach more than 2.49 percent.
According to comparative example 1 of the present invention, a solar cell module was prepared in a similar manner to example 1 except that the transparent back sheet 6 was free of the light guide film 10 at the portion corresponding to the cell gap and the cell string gap on the side facing the solar cell 4 andand there is no white film on the surface of the portion of the transparent packaging backsheet 6 extending beyond the solar cell array 7 facing the solar cell array 7. According to IEC61215 under standard test conditions (AM1.5, 25 ℃, 1000W/m)2) The power of the solar module was measured to be 370W.
According to comparative example 2 of the present invention, a solar cell module was prepared in a similar manner to example 1 except that the portion of the side of the transparent packaging backsheet 6 facing the solar cell 4 corresponding to the cell gap and the string gap had a light guide film 10 (BC 81 produced by 3M innovative limited, which had a three-layer structure in which the first layer was a metal reflective layer, the second layer was a microstructure layer, and the third layer was an adhesive layer), but no white film was present on the surface of the solar cell array 7 facing the portion of the transparent packaging backsheet 6 extending beyond the solar cell array 7. According to IEC61215 under standard test conditions (AM1.5, 25 ℃, 1000W/m)2) The measured power of the solar module is 377W, and the power gain of the module can reach 1.89%.
According to comparative example 3 of the present invention, a solar cell module was prepared in a similar manner to example 1 except that the light guide film 10 was not present at the portion of the side of the transparent back sheet 6 facing the solar cells 4 corresponding to the cell gap and the cell string gap, but a white film was not present at the side of the transparent back sheet facing the solar cells (including the portion corresponding to the edge of the solar cell array). According to IEC61215 under standard test conditions (AM1.5, 25 ℃, 1000W/m)2) The measured power of the solar module is 1W, and the power gain of the module can reach 0.27%.
As is clear from a comparison of the results of comparative examples 1 and 2, the power of the solar cell module can be increased to some extent by providing the light guide film in the portion of the transparent back sheet corresponding to the cell gap and the cell string gap. As can be seen from a comparison of the results of comparative examples 2 and 3, the power of the solar cell module can be increased to some extent as well by providing the white film on the side of the transparent back sheet facing the solar cells (including the portion corresponding to the edge of the solar cell array). As can be seen from a comparison of the results of example 1 and comparative examples 1 to 3 above, when the light guiding film 10 is provided at the portion of the transparent back sheet 6 corresponding to the cell gap and the cell string gap and the white film is provided on the surface of the portion of the transparent back sheet 6 extending beyond the solar cell array 7 facing the solar cell array 7 at the same time, the power of the solar cell module is greatly increased. This result can confirm that providing both the light guiding film and the white film at a specific portion of the solar cell module has a certain synergistic effect on power increase.
It will be apparent to those skilled in the art that various changes and modifications can be made in the present disclosure without departing from the spirit and scope of the disclosure. Thus, if such modifications and variations of the present disclosure fall within the scope of the claims of the present invention and their equivalents, the present disclosure is also intended to encompass such modifications and variations.
Claims (15)
1. The utility model provides a solar module, solar module includes the printing opacity component, preceding encapsulated layer, a plurality of spaced solar cell each other, back encapsulated layer and the encapsulation backplate that set gradually along its thickness direction, a plurality of spaced solar cell each other form solar cell array, wherein:
in the plane direction of the solar cell module, the area of the solar cell array is smaller than that of the packaging back sheet, and the packaging back sheet has a diffuse reflection layer on the surface of the part of the solar cell array extending beyond the solar cell array, which faces the solar cell array; and is
The solar cell module further comprises a light guide film, and the light guide film is arranged on the surface of the packaging back plate, which is located inside the solar cell module.
2. The solar cell module of claim 1 wherein the diffuse reflective layer is a white film.
3. The solar cell module of claim 2 wherein the white film is a white polyethylene terephthalate film, a white polypropylene film, or a white polyimide film.
4. The solar cell assembly of claim 1 wherein the diffuse reflective layer has a thickness in the range of 20 to 200 μ ι η.
5. The solar cell assembly of claim 1 wherein the encapsulant backplane extends beyond the solar cell array at all four edges of the solar cell array.
6. The solar cell module of claim 1 wherein the width of the portion of the encapsulant backsheet extending beyond the solar cell array is in the range of 1 to 3 cm.
7. The solar cell assembly of claim 1 wherein the diffusive reflective layer has diffusive structural features on a surface thereof.
8. The solar cell assembly of claim 7 wherein the diffusing structural features are a plurality of protrusions, a plurality of recesses, or a combination thereof.
9. The solar cell assembly of claim 1 wherein the diffusive reflective layer is secured to the surface of the packaging backsheet by an adhesive layer.
10. The solar cell module of claim 9, wherein the adhesive layer is an ethylene-vinyl acetate copolymer adhesive layer, a polyolefin resin adhesive layer, a polypropylene oxide adhesive layer, a polyvinyl butyral adhesive layer, a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer adhesive layer, an ethylene-tetrafluoroethylene copolymer adhesive layer, a polyvinylidene fluoride adhesive layer, a polyurethane adhesive layer, a polymethyl methacrylate adhesive layer, a polyimide adhesive layer, an acrylic adhesive layer, or an acrylate adhesive layer.
11. The solar cell module of claim 9 wherein the adhesive layer has a thickness of between 10-100 μ ι η.
12. The solar cell assembly of claim 1 wherein the diffuse reflective layer is further provided with an ultraviolet-resistant layer thereon.
13. The solar cell module of claim 1 wherein the encapsulant backsheet is a transparent encapsulant backsheet.
14. The solar cell module of claim 13 wherein the transparent encapsulant backsheet is a glass backsheet or a transparent polymer backsheet.
15. The solar cell assembly of claim 1 wherein the light directing film is secured to a surface of the back sheet that is on the interior of the solar cell assembly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920781499.2U CN210040222U (en) | 2019-05-28 | 2019-05-28 | Solar cell module |
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| CN201920781499.2U CN210040222U (en) | 2019-05-28 | 2019-05-28 | Solar cell module |
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| CN210040222U true CN210040222U (en) | 2020-02-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114248931A (en) * | 2020-09-24 | 2022-03-29 | 海鹰航空通用装备有限责任公司 | Design method for solar unmanned aerial vehicle crystalline silicon solar cell array |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114248931A (en) * | 2020-09-24 | 2022-03-29 | 海鹰航空通用装备有限责任公司 | Design method for solar unmanned aerial vehicle crystalline silicon solar cell array |
| CN114248931B (en) * | 2020-09-24 | 2024-05-07 | 海鹰航空通用装备有限责任公司 | Design method of solar unmanned aerial vehicle crystalline silicon solar cell array |
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