CN217881543U - Novel light conversion photovoltaic backplate and two-sided photovoltaic module - Google Patents
Novel light conversion photovoltaic backplate and two-sided photovoltaic module Download PDFInfo
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- CN217881543U CN217881543U CN202221852897.7U CN202221852897U CN217881543U CN 217881543 U CN217881543 U CN 217881543U CN 202221852897 U CN202221852897 U CN 202221852897U CN 217881543 U CN217881543 U CN 217881543U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 64
- 239000000463 material Substances 0.000 claims abstract description 22
- 230000003287 optical effect Effects 0.000 claims abstract description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 6
- 239000001301 oxygen Substances 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 138
- 238000000576 coating method Methods 0.000 claims description 23
- 239000011248 coating agent Substances 0.000 claims description 21
- 239000000758 substrate Substances 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 15
- 239000002313 adhesive film Substances 0.000 claims description 10
- -1 polyethylene Polymers 0.000 claims description 9
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims description 8
- 229910001930 tungsten oxide Inorganic materials 0.000 claims description 8
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 7
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 7
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000005538 encapsulation Methods 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910021418 black silicon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002070 nanowire Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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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- Photovoltaic Devices (AREA)
Abstract
The utility model relates to a photovoltaic backplate technical field specifically discloses a novel light conversion photovoltaic backplate and two-sided photovoltaic module. The novel light conversion photovoltaic back plate comprises a weather-resistant layer, an optical functional film and an up-conversion layer, wherein the weather-resistant layer, the optical functional film and the up-conversion layer are sequentially stacked from the back to the front; the optical function film comprises a base material layer and a water-blocking oxygen-grouping layer arranged between the weather-resistant layer and the base material layer. This novel light conversion photovoltaic backplate is through the layer of nai time, block water the cooperation on oxygen layer of group and the last conversion layer, and it is applied to two-sided photovoltaic module after, can improve two-sided photovoltaic module's two-sided rate greatly to can ensure the stability and the validity of last conversion layer under long-term outdoor service conditions, improve its life, and then can be stable for a long time, improve two-sided photovoltaic module's photoelectric conversion efficiency effectively.
Description
Technical Field
The utility model relates to a photovoltaic backplate technical field, concretely relates to novel light conversion photovoltaic backplate and have this novel light conversion photovoltaic backplate's two-sided photovoltaic module.
Background
Currently, efficient use of renewable energy sources such as solar, wind and tidal energy is one of the solutions to achieve sustainable use of energy. The power generation amount of the photovoltaic module is closely related to the spectral range and the proportion of the surface absorption of the photovoltaic cell piece incident into the photovoltaic module, the spectral responses of the traditional single polycrystalline silicon cell and the recently rapidly developed black silicon and back-liquid chemical cell have a commonality, namely the conversion efficiency of the traditional single polycrystalline silicon cell to an ultraviolet band is obviously lower than that of a visible light band, and the utilization rate of the ultraviolet light is obviously lower. Therefore, in recent years, organic fluorescent dyes, organic-inorganic rare earth composites, and up-conversion materials are gradually applied to photovoltaic modules to improve the power output of the photovoltaic modules.
Wherein, publication No. CN210110807U provides a two-sided photovoltaic module and photovoltaic power generation system, and this two-sided photovoltaic module is equipped with first up-conversion material layer between second encapsulation glued membrane layer and transparent backplate to be equipped with second up-conversion material layer between front glass and first encapsulation glued membrane layer, consequently can convert infrared light into visible light, so can improve the utilization ratio of two-sided photovoltaic module to the sunlight. However, the transparent back sheet of the double-sided photovoltaic module does not have a light conversion function, and therefore, it is difficult to sufficiently and effectively utilize light rays on the back of the double-sided photovoltaic module, which results in a low double-sided rate of the conventional double-sided photovoltaic module.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provide a novel light conversion photovoltaic backplate and have this novel light conversion photovoltaic backplate's two-sided photovoltaic module to long-term stability, improve two-sided photovoltaic module's two-sided rate and photoelectric conversion efficiency effectively.
Based on the above, the utility model discloses a novel light conversion photovoltaic back plate, which comprises a weather-proof layer, an optical functional film and an up-conversion layer for converting infrared light into visible light, wherein the weather-proof layer, the optical functional film and the up-conversion layer are sequentially laminated from the back to the front; the optical function film comprises a base material layer and a water-blocking oxygen-grouping layer arranged between the weather-resistant layer and the base material layer.
Preferably, the thickness of the upconversion layer is 5 to 15 μm.
Preferably, the water blocking oxygen group layer is a plating layer structure arranged on the back surface of the base material layer.
Further preferably, the plating layer structure is a silicon oxide layer, a silicon nitride layer and an aluminum oxide layer plated on the back surface of the base material layer in sequence; the thicknesses of the silicon oxide layer, the silicon nitride layer and the aluminum oxide layer are all 10-80nm.
Preferably, the optical functional film further includes a heat insulating layer disposed between the substrate layer and the upper conversion layer.
Further preferably, the heat insulation layer is a transparent nano tungsten oxide heat insulation coating coated on the front side of the base material layer; the thickness of the nano tungsten oxide heat insulation coating is 1-3 mu m.
Preferably, the weather-resistant layer, the substrate layer and the up-conversion layer are all transparent layered structures.
Preferably, the base material layer is a three-layer co-extruded base film, the middle layer of the base film is a polyethylene film, and the front side and the back side of the polyethylene film are both polypropylene films; the thickness of the substrate layer is 200-280 μm.
Preferably, the weathering layer is a FEVE coating; the thickness of the weather-resistant layer is 10-30 μm.
The utility model also discloses a two-sided photovoltaic module, include from the front to the back in proper order the stromatolite set up photovoltaic front bezel, first encapsulation glued membrane, photovoltaic cell piece, second encapsulation glued membrane and photovoltaic backplate, the photovoltaic backplate is the utility model relates to an above-mentioned a novel light conversion photovoltaic backplate; the up-conversion layer is arranged on the back surface of the second packaging adhesive film.
Compared with the prior art, the utility model discloses at least, including following beneficial effect:
in the novel light conversion photovoltaic back plate, the upper conversion layer can effectively utilize light rays on the back of the double-sided photovoltaic component to convert infrared light on the front back of the double-sided photovoltaic component into visible light, and the water-blocking oxygen-blocking layer can enable the upper conversion layer to obtain efficient water-blocking steam and oxygen-blocking protection, so that the molecular structure of the upper conversion layer is better ensured not to be damaged by steam molecules, and the photoelectric conversion efficiency of the upper conversion layer is effectively protected; therefore, through the cooperation of the weather-resistant layer, the water-blocking oxygen-containing layer and the up-conversion layer, the novel light-conversion photovoltaic backboard can greatly improve the double-sided rate of the double-sided photovoltaic module after being applied to the double-sided photovoltaic module, can ensure the stability and effectiveness of the up-conversion layer under long-term outdoor use conditions, prolongs the service life of the up-conversion layer, and can further improve the photoelectric conversion efficiency of the double-sided photovoltaic module stably and effectively for a long time.
Drawings
Fig. 1 is a schematic cross-sectional structural view of a bifacial photovoltaic module according to this embodiment.
Fig. 2 is a schematic cross-sectional structural view of the novel light-converting photovoltaic back sheet according to this embodiment.
The reference numbers illustrate: a photovoltaic front panel 1; a first packaging adhesive film 2; a photovoltaic cell sheet 3; a second packaging adhesive film 4; a photovoltaic backsheet 5; an upper conversion layer 51; an optical functional film 52; a heat insulating layer 521; a substrate layer 522; a water blocking oxygen component layer 523; a silicon oxide layer 5231; a silicon nitride layer 5232; an aluminum oxide layer 5233; a weathering layer 53.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Examples
A novel light conversion photovoltaic back plate 5 of this embodiment, see fig. 1, includes a photovoltaic front plate 1, a first encapsulation adhesive film 2, a photovoltaic cell sheet 3, a second encapsulation adhesive film 4 and a photovoltaic back plate 5, which are sequentially stacked from the front side to the back side, the double-sided photovoltaic module includes a plurality of photovoltaic cell sheets 3, the plurality of photovoltaic cell sheets 3 are distributed at intervals between the first encapsulation adhesive film 2 and the second encapsulation adhesive film 4, and the photovoltaic cell sheets 3 are photovoltaic cell sheets 3 capable of performing photovoltaic power generation on the front side and the back side, so that the double-sided photovoltaic module is a photovoltaic module capable of performing photovoltaic power generation on both sides; the photovoltaic backsheet 5 is a novel light-converting photovoltaic backsheet as shown below.
The novel light conversion photovoltaic back sheet of the embodiment, referring to fig. 1-2, includes an up-conversion layer 51, an optical functional film 52, and a weather-resistant layer 53, which are sequentially stacked from the front side to the back side, where the up-conversion layer 51 is disposed on the back side of the second encapsulant film 4.
Wherein the thickness of the upconversion layer 51 is 5-15 μm, such as 5 μm, 8 μm, 10 μm, 12 μm or 15 μm. This up-conversion layer 51 can effectively utilize the light at the two-sided photovoltaic module back, and the infrared light with the two-sided photovoltaic module back is converted into visible light high-efficiently to make photovoltaic cell piece 3 can utilize more visible light, further improve two-sided rate of two-sided photovoltaic module, further improve two-sided photovoltaic module's photoelectric conversion efficiency.
Specifically, the upconversion material used in the upconversion layer 51 is a conventional upconversion photochromic material that can produce photochromic to the light energy with the wavelength of 980-1600 nm and can effectively convert the light with the wavelength of 980-1600 nm into green light with the wavelength of 550 nm. The upconverting material is preferably NaYF 4 :Er 3+ /Yb 3+ 、LiYF 4 :Yb 3+ /Er 3+ 、NaYF 4 :Yb 3+ /Tm 3+ 、NaYF 4 :Ho 3+ /Yb 3+ 、Ho 3+ /Yb 3+ Co-doped Gd 2 O 3 Or E 3+ /Yb 3+ Co-doped CeO 2 The material of the nanowires.
Further, the up-conversion layer 51 is a transparent layered structure to enhance the visible light transmittance of the light conversion photovoltaic back plate, which is beneficial to improving the double-sided rate of the double-sided photovoltaic module; for example, the upconversion layer 51 is a transparent upconversion coating or film, and the material used is a conventional upconversion coating or film.
The optical functional film 52 includes a substrate layer 522 and a water-blocking oxygen-containing layer 523 disposed between the weatherable layer 53 and the substrate layer 522. The substrate layer 522 has a thickness of 200 to 280 μm, such as 200 μm, 220 μm, 240 μm, 260 μm, or 280 μm; the substrate layer 522 is a transparent layered structure, specifically, the substrate layer 522 is a three-layer co-extruded base film, the middle layer of the co-extruded base film is a polyethylene film, and the front and back of the polyethylene film are both polypropylene films; so, this substrate layer 522 can provide certain mechanics for light conversion photovoltaic backplate and support, and the transparency is good, can improve the luminousness, can also play if hinder wet, block water, insulating guard action.
Further, the water blocking oxygen group layer 523 is a plating layer structure arranged on the back surface of the substrate layer 522; the coating structure can be a single-layer coating structure or a coating structure formed by multiple layers of coatings, preferably a coating structure formed by multiple layers of coatings, and specifically comprises the following components: a silicon oxide layer 5231, a silicon nitride layer 5232 and an aluminum oxide layer 5233 which are sequentially plated on the back surface of the base material layer 522 in a magnetron sputtering manner; the thickness of the silicon oxide layer 5231, the silicon nitride layer 5232 and the aluminum oxide layer 5233 are all 10-80nm, such as 10nm, 20nm, 40nm, 60nm or 80nm. Because the back of the substrate layer 522 is attached with the water-blocking oxygen-blocking group layer 523, the upper conversion layer 51 can be protected by blocking water vapor and oxygen more efficiently, the molecular structure of the upper conversion layer is better ensured not to be damaged by water vapor molecules, the photoelectric conversion efficiency of the upper conversion layer 51 is effectively protected, the stability of the upper conversion layer 51 under long-term outdoor use conditions is improved, and the service life of the upper conversion layer 51 is greatly prolonged.
Further, the optical functional film 52 further includes a heat insulating layer 521 provided between the base material layer 522 and the upper conversion layer 51. Specifically, the heat insulation layer 521 is a nano tungsten oxide heat insulation coating coated on the front surface of the substrate layer 522, the material used in the heat insulation layer is the existing nano tungsten oxide heat insulation coating, and the nano tungsten oxide heat insulation coating is a transparent coating and can enhance the visible light transmittance of the heat insulation layer 521; the thickness of the nanometer tungsten oxide heat insulation coating is 1-3 μm, such as 1 μm, 2 μm or 3 μm. The thermal insulation layer 521 can effectively block more than 80% of infrared light, has good thermal insulation effect, and can effectively reduce the temperature of the light conversion photovoltaic back plate so as to prevent the light conversion photovoltaic back plate from aging.
Wherein the weatherable layer 53 has a thickness of 10-30 μm, such as 10 μm, 15 μm, 20 μm, 25 μm, or 30 μm; the back surface of the weather-resistant layer 53 faces the air surface of the outside, and the weather-resistant layer 53 is preferably a fluorocarbon coating, more preferably an FEVE coating, and the material used in the weather-resistant layer is an existing FEVE coating so as to ensure excellent weather resistance and corrosion resistance of the light conversion photovoltaic back sheet.
Further, the weather-resistant layer 53 is a transparent layered structure to enhance the light transmittance of the light conversion photovoltaic back plate, and thus, the double-sided rate of the double-sided photovoltaic module is improved.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the invention.
The technical solution provided by the present invention is introduced in detail, and the principle and the implementation of the present invention are explained by applying specific examples, and the explanation of the above examples is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (10)
1. A novel light conversion photovoltaic backboard is characterized by comprising a weather-resistant layer, an optical functional film and an up-conversion layer for converting infrared light into visible light, wherein the weather-resistant layer, the optical functional film and the up-conversion layer are sequentially stacked from the back to the front; the optical function film comprises a base material layer and a water-blocking oxygen-grouping layer arranged between the weather-resistant layer and the base material layer.
2. The novel light-converting photovoltaic backsheet according to claim 1, wherein the thickness of said upconverting layer is from 5 to 15 μm.
3. The novel light-converting photovoltaic back sheet according to claim 1, wherein the water-blocking oxygen-containing layer is a coating structure disposed on the back surface of the substrate layer.
4. The novel light-converting photovoltaic back sheet according to claim 3, wherein the coating structure is a silicon oxide layer, a silicon nitride layer and an aluminum oxide layer sequentially coated on the back surface of the substrate layer; the thicknesses of the silicon oxide layer, the silicon nitride layer and the aluminum oxide layer are all 10-80nm.
5. The novel light-converting photovoltaic backsheet according to claim 1, wherein said optical functional film further comprises a thermal insulating layer disposed between the substrate layer and the upconversion layer.
6. The novel light-converting photovoltaic back sheet according to claim 5, wherein the thermal insulation layer is a transparent nano tungsten oxide thermal insulation coating layer coated on the front surface of the substrate layer; the thickness of the nano tungsten oxide heat insulation coating is 1-3 mu m.
7. The novel light-converting photovoltaic backsheet according to claim 1, wherein said weatherable layer, said substrate layer and said upconverting layer are all transparent layered structures.
8. The novel light-converting photovoltaic back sheet according to claim 1, wherein the substrate layer is a three-layer co-extruded base film, the middle layer of the base film is a polyethylene film, and the front surface and the back surface of the polyethylene film are both polypropylene films; the thickness of the substrate layer is 200-280 mu m.
9. The novel light-converting photovoltaic backsheet according to claim 1, wherein said weatherable layer is a FEVE coating; the thickness of the weather-resistant layer is 10-30 μm.
10. A double-sided photovoltaic module, which comprises a photovoltaic front plate, a first packaging adhesive film, a photovoltaic cell sheet, a second packaging adhesive film and a photovoltaic back plate which are sequentially stacked from the front side to the back side, wherein the photovoltaic back plate is the novel light conversion photovoltaic back plate as claimed in any one of claims 1 to 9; the up-conversion layer is arranged on the back face of the second packaging adhesive film.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221852897.7U CN217881543U (en) | 2022-07-18 | 2022-07-18 | Novel light conversion photovoltaic backplate and two-sided photovoltaic module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221852897.7U CN217881543U (en) | 2022-07-18 | 2022-07-18 | Novel light conversion photovoltaic backplate and two-sided photovoltaic module |
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| Publication Number | Publication Date |
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| CN217881543U true CN217881543U (en) | 2022-11-22 |
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| CN202221852897.7U Active CN217881543U (en) | 2022-07-18 | 2022-07-18 | Novel light conversion photovoltaic backplate and two-sided photovoltaic module |
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| Country | Link |
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| CN (1) | CN217881543U (en) |
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