CN219677271U - Fluoride-free heat dissipation type photovoltaic backboard and photovoltaic module - Google Patents
Fluoride-free heat dissipation type photovoltaic backboard and photovoltaic module Download PDFInfo
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- CN219677271U CN219677271U CN202320016950.8U CN202320016950U CN219677271U CN 219677271 U CN219677271 U CN 219677271U CN 202320016950 U CN202320016950 U CN 202320016950U CN 219677271 U CN219677271 U CN 219677271U
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 77
- 238000000576 coating method Methods 0.000 claims abstract description 119
- 239000011248 coating agent Substances 0.000 claims abstract description 115
- 239000010410 layer Substances 0.000 claims abstract description 53
- 229920000728 polyester Polymers 0.000 claims abstract description 45
- 239000000758 substrate Substances 0.000 claims abstract description 30
- 230000007704 transition Effects 0.000 claims abstract description 18
- 239000002346 layers by function Substances 0.000 claims abstract description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 26
- 229910052710 silicon Inorganic materials 0.000 claims description 26
- 239000010703 silicon Substances 0.000 claims description 26
- 239000012790 adhesive layer Substances 0.000 claims description 23
- 238000001035 drying Methods 0.000 claims description 15
- 238000004806 packaging method and process Methods 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 8
- 238000000151 deposition Methods 0.000 claims description 7
- 239000004447 silicone coating Substances 0.000 claims description 7
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 6
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 5
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 239000002356 single layer Substances 0.000 claims description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 abstract description 12
- 238000010248 power generation Methods 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 230000007774 longterm Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000011247 coating layer Substances 0.000 description 9
- 238000005538 encapsulation Methods 0.000 description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 6
- 229910052731 fluorine Inorganic materials 0.000 description 6
- 239000011737 fluorine Substances 0.000 description 6
- 239000011229 interlayer Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000006462 rearrangement reaction Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
- Laminated Bodies (AREA)
Abstract
The utility model relates to the technical field of solar cells, and particularly discloses a fluorine-free heat dissipation type photovoltaic backboard and a photovoltaic module. The fluoride-free heat dissipation type photovoltaic backboard comprises an intermediate substrate layer; the upper surface of the middle substrate layer is coated with a first polyester coating close to the solar cell, and the lower surface of the middle substrate layer is coated with a transition coating; the lower surface of the transition coating is provided with a heat dissipation functional layer, the lower surface of the heat dissipation functional layer is also coated with a weather-proof coating contacting with external air, and the weather-proof coating is an organosilicon coating. The fluorine-free heat dissipation type photovoltaic backboard does not use a fluorocarbon coating, has higher environmental protection performance, is lower in energy consumption in the manufacturing process, has excellent weather resistance and wear resistance, can effectively spread heat generated in the working process of the photovoltaic module, reduces the working temperature of the photovoltaic module, and can further ensure that the solar cell piece keeps higher photovoltaic power generation efficiency in the long-term outdoor use process.
Description
Technical Field
The utility model relates to the technical field of solar cells, in particular to a fluorine-free heat dissipation type photovoltaic backboard and a photovoltaic module.
Background
Currently, solar power generation is one of the most efficient environmental protection power generation modes, and is gradually accepted by society. In order to pursue return on investment for power generation of solar cell modules (i.e., photovoltaic modules), photovoltaic modules are generally required to have a service life of 25 years. The photovoltaic module is generally a laminated structure, and mainly comprises a glass surface layer, a first encapsulation adhesive layer, a solar cell (for short, a cell), a second encapsulation adhesive layer (such as an EVA layer) and a solar cell back plate (i.e. a photovoltaic back plate), wherein the cell is encapsulated by two sealing layers. The photovoltaic backboard occupies a quite large surface area in the whole photovoltaic module, the photovoltaic backboard is in close contact with the atmosphere, the photovoltaic module is supported, various harmful factors (such as water vapor and ultraviolet rays) in the atmosphere are required to be blocked, and the battery piece is effectively protected for a long time, so that the photovoltaic backboard is a second major functional element of the photovoltaic module, which is next to the battery piece.
The coating type photovoltaic back sheet occupies most of market share nowadays, and the structure mainly comprises an EVA top coating layer, a PET substrate layer and an air top coating layer. In order to satisfy the weather resistance of the photovoltaic back sheet coating, current coatings, especially air top coatings, mainly use fluorine-containing resin coatings, which require the fluorine resin to be crosslinked and cured with isocyanate under high temperature conditions to form the coating. However, the fluorine resin contains fluorocarbon bonds, and degradation thereof is difficult; and its crosslinking curing needs to be performed under high temperature conditions. Therefore, the fluororesin is harmful to the environment, and consumes a lot of energy when it is cured; moreover, the fluorine-containing photovoltaic backboard generates a large amount of hydrogen fluoride after being burnt, the hydrogen fluoride is a highly toxic gas, has strong corrosiveness, has great harm to human bodies, is easy to dissolve in water, can pollute riverbed and groundwater, and has great harm to human health and environment.
Therefore, in order to avoid the environmental pollution and the energy consumption caused by the fluorine-containing resin coating, a fluorine-free photovoltaic back sheet has been actively developed, for example, publication No. CN108511546a provides a solar cell panel back film, and the weather-resistant layer of the back film adopts a non-fluorine-containing resin coating, so that the weather resistance and the corrosion resistance of the back film are good. However, most of the coating type photovoltaic backboard has poor heat dissipation effect, and in the long-term photovoltaic power generation process, the temperature of the battery piece is relatively high, so that the battery piece is overheated and is difficult to rapidly emit heat into the air, the working temperature of the photovoltaic module is continuously increased, and the photovoltaic power generation efficiency of the battery piece is greatly affected.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a fluorine-free heat dissipation type photovoltaic backboard and a photovoltaic module.
Based on the above, the utility model discloses a fluoride-free heat dissipation type photovoltaic backboard, which comprises an intermediate substrate layer; the upper surface of the middle substrate layer is coated with a first polyester coating close to the solar cell, and the lower surface of the middle substrate layer is coated with a transition coating;
the lower surface of the transition coating is provided with a heat dissipation functional layer, the lower surface of the heat dissipation functional layer is also coated with a weather-proof coating contacting with external air, and the weather-proof coating is an organosilicon coating.
Preferably, the heat dissipation function layer is a heat dissipation oxide layer having a thickness of 5-10 μm.
Further preferably, the heat dissipation oxide layer is a single-layer inorganic film or a multi-layer inorganic film formed by depositing far infrared ceramic powder, far infrared ceramic fiber, zirconium dioxide, ferric oxide, chromium oxide or silicon dioxide on the surface of the transition coating.
Preferably, the silicone coating is a room temperature self-drying silicone coating having a thickness of 10-20 μm.
Further preferably, the room temperature self-drying type organic silicon coating is an organic silicon resin coating and/or an organic silicon modified epoxy resin coating.
Preferably, the transition coating is a second polyester coating having a thickness of 5-100 μm.
Further preferably, the second polyester coating is a white polyester coating or a transparent polyester coating.
Preferably, the first polyester coating is a white polyester coating having a thickness of 10-100 μm.
Preferably, the intermediate substrate layer is a PET substrate layer or a PP substrate layer having a thickness of 200-300 μm.
The utility model also discloses a photovoltaic module, which comprises a photovoltaic front plate, a first packaging adhesive layer, a solar cell, a second packaging adhesive layer and a photovoltaic backboard, wherein the photovoltaic front plate, the first packaging adhesive layer, the solar cell, the second packaging adhesive layer and the photovoltaic backboard are sequentially stacked from top to bottom.
Compared with the prior art, the utility model at least comprises the following beneficial effects:
according to the fluorine-free heat dissipation type photovoltaic backboard, a fluorocarbon coating is not used, but an organic silicon coating is used as a weather-resistant coating, the organic silicon coating has excellent weather resistance and wear resistance, the service life of the fluorine-free heat dissipation type photovoltaic backboard can be prolonged, and compared with the existing common solar cell backboard, the fluorine-free heat dissipation type photovoltaic backboard has lower energy consumption in the preparation process, lower production cost and more environmental protection; in addition, the heat dissipation functional layer in the fluoride-free heat dissipation type photovoltaic backboard can effectively dissipate heat generated in the working process of the photovoltaic module, can effectively reduce the working temperature of the photovoltaic module, and can effectively avoid the problem that the photovoltaic power generation power of the solar cell is reduced due to the fact that the working temperature of the solar cell is too high; the first polyester coating and the second packaging adhesive layer made of EVA have partially similar polymer chain segments, so that the first polyester coating and the second packaging adhesive layer made of EVA have good adhesion performance, and the interlayer adhesion force of the fluorine-free heat dissipation type photovoltaic backboard, the second packaging adhesive layer and the solar cell can be improved; the transition coating can also improve the interlayer adhesive force of the fluorine-free heat dissipation type photovoltaic backboard, so that the stability and reliability of the whole fluorine-free heat dissipation type photovoltaic backboard in long-term outdoor use can be improved.
Drawings
Fig. 1 is a schematic cross-sectional structure of a fluorine-free heat dissipation type photovoltaic back sheet according to this embodiment.
Fig. 2 is a schematic cross-sectional structure of a photovoltaic module according to this embodiment.
Reference numerals illustrate: a photovoltaic front panel 1; a first encapsulation adhesive layer 2; a solar cell 3; a second encapsulation adhesive layer 4; a photovoltaic backsheet 5;
a first polyester coating 51; an intermediate substrate layer 52; a transitional coating 53; a heat dissipation functional layer 54; a silicone coating 55.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
Examples
1-2, a fluorine-free heat dissipation type photovoltaic back sheet of the present embodiment, includes an intermediate substrate layer 52; the upper surface of the intermediate substrate layer 52 is coated with a first polyester coating 51, which first polyester coating 51 contacts the second encapsulant layer 4 in the photovoltaic module and is adjacent to the solar cell sheet 3. The first polyester coating 51 and the second packaging adhesive layer 4 made of EVA have partially similar polymer chain segments, so that the first polyester coating 51 and the second packaging adhesive layer 4 made of EVA have good adhesion performance, thereby improving the interlayer adhesion force between the fluorine-free heat dissipation type photovoltaic backboard and the second packaging adhesive layer 4 as well as between the fluorine-free heat dissipation type photovoltaic backboard and the solar cell 3, and further improving the stability and reliability of the fluorine-free heat dissipation type photovoltaic backboard in long-term outdoor use in a photovoltaic module.
Wherein the thickness of the first polyester coating layer 51 is 10-100 μm, for example 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm or 100 μm. Moreover, the first polyester coating layer 51 is preferably a white polyester coating layer; the white polyester coating has high light reflection performance, so that the white polyester coating can reflect sunlight on the back surface of the solar cell 3 back to the solar cell 3, and is beneficial to the solar cell 3 to absorb and reuse the reflected sunlight, so that the light utilization rate and the power generation efficiency can be improved.
Wherein the thickness of the intermediate substrate layer 52 is 200-300 μm, for example 200 μm, 220 μm, 240 μm, 260 μm, 280 μm or 300 μm. Moreover, the middle substrate layer 52 is a PET substrate layer or a PP substrate layer to provide mechanical support for the entire fluorine-free heat dissipation type photovoltaic backsheet.
Further, the lower surface of the intermediate substrate layer 52 is also coated with a transition coating 53. Wherein the thickness of the transition coating 53 is 5-100 μm, e.g. 5 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm or 100 μm. Moreover, the transition coating 53 is preferably a second polyester coating, while the intermediate substrate layer 52 is preferably a PET substrate layer; therefore, the second polyester coating and the PET substrate layer have similar polymer chain segments, so that the adhesion performance of the second polyester coating and the PET substrate layer is good, and the interlayer adhesion force of the whole fluorine-free heat dissipation type photovoltaic backboard can be improved.
Specifically, the second polyester coating is a white polyester coating or a transparent polyester coating, and the color and thickness of the second polyester coating can be specifically set according to actual requirements. The first polyester coating 51 and the second polyester coating are both low-cost polyester coatings, so that the production cost of the fluorine-free heat-dissipation type photovoltaic backboard can be reduced.
Further, the lower surface of the transition coating 53 is further provided with a heat dissipation functional layer 54, and the heat dissipation functional layer 54 can effectively dissipate heat generated in the working process of the photovoltaic module, so that the working temperature of the photovoltaic module is reduced, and further, in the long-term outdoor use process, the solar cell 3 can be ensured to keep higher photovoltaic power generation efficiency.
The thickness of the heat dissipation layer 54 is 5-10 μm, for example, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm. The heat dissipation functional layer 54 is a heat dissipation oxide layer, has an excellent heat dissipation effect, and can effectively avoid the problem of the decrease of photovoltaic power generation power caused by the excessively high operating temperature of the solar cell 3.
Specifically, the heat dissipation oxide layer is a single-layer inorganic film formed by depositing far-infrared ceramic powder, far-infrared ceramic fibers, zirconium dioxide, ferric oxide, chromium oxide or silicon dioxide on the surface of the transition coating 53. Of course, in other examples, the heat dissipating oxide layer may be a multi-layer inorganic film formed by depositing far infrared ceramic powder, far infrared ceramic fiber, zirconium dioxide, ferric oxide, chromium oxide or silicon dioxide on the surface of the transition coating 53, that is, the multi-layer inorganic film is formed by sequentially depositing and stacking a plurality of single-layer inorganic films. The heat dissipation oxide layer is specifically a single-layer inorganic film or a multi-layer inorganic film, and can be arranged according to actual requirements.
Further, the lower surface of the heat dissipation functional layer 54 is also coated with a weather-resistant coating, which contacts the outside air; the weather-resistant coating is the organic silicon coating 55 and does not adopt a fluorocarbon coating, so that the organic silicon coating 55 has higher environmental protection performance, does not bring about larger environmental pollution like the fluorocarbon coating, has lower energy consumption, can reduce energy consumption and production cost, has excellent weather resistance and wear resistance, can improve the service life of the fluorine-free heat-dissipation type photovoltaic backboard, and can assist the heat dissipation functional layer 54 to dissipate heat into the air. In addition, since the heat dissipation functional layer 54 is a dense inorganic film deposited by the above oxide, the heat dissipation functional layer 54 has an excellent heat dissipation effect, and also improves the adhesion between the second polyester coating and the silicone coating 55, so that the stability and reliability of the entire fluorine-free heat dissipation type photovoltaic back sheet in long-term outdoor use can be improved.
The thickness of the silicone coating 55 is 10 to 20 μm, for example 10 μm, 12 μm, 14 μm, 16 μm, 18 μm or 20 μm. The organosilicon coating 55 is preferably a room temperature self-drying organosilicon coating, which not only reduces environmental hazards caused by fluorocarbon resin coating, but also can be cured to form a film at room temperature, thereby further reducing production energy consumption and further reducing production cost.
Specifically, the room temperature self-drying type organic silicon coating is preferably an organic silicon resin coating and/or an organic silicon modified epoxy resin coating; that is, the room temperature self-drying type organic silicon coating is an organic silicon resin coating, or an organic silicon modified epoxy resin coating, or a lamination of the organic silicon resin coating and the organic silicon modified epoxy resin coating. The room temperature self-drying organic silicon coating can react with moisture in the air at room temperature to generate crosslinking solidification, and can generate rearrangement reaction between silicon and oxygen, so that the mechanical strength and hardness of the room temperature self-drying organic silicon coating can be enhanced, and the crosslinking solidification of the room temperature self-drying organic silicon coating takes silicon oxygen bonds as a main part, so that the room temperature self-drying organic silicon coating has stronger weather resistance and wear resistance.
In summary, the fluorine-free heat dissipation type photovoltaic backboard according to the embodiment does not use a fluorocarbon coating, but uses the organic silicon coating 55 as a weather-resistant coating, the organic silicon coating 55 has excellent weather resistance and wear resistance, the service life of the fluorine-free heat dissipation type photovoltaic backboard can be prolonged, and compared with the existing common solar cell backboard, the fluorine-free heat dissipation type photovoltaic backboard according to the embodiment has lower energy consumption and is more environment-friendly in the preparation process; in addition, the heat dissipation functional layer 54 in the fluoride-free heat dissipation type photovoltaic backboard can effectively dissipate heat generated in the working process of the photovoltaic module, and can effectively reduce the working temperature of the photovoltaic module; the first polyester coating 51 and the second encapsulation adhesive layer 4 made of EVA have partially similar polymer chain segments, so that the adhesion performance of the first polyester coating 51 and the second encapsulation adhesive layer 4 made of EVA is good, and the interlayer adhesion force of the fluorine-free heat dissipation type photovoltaic backboard, the second encapsulation adhesive layer 4 and the solar cell 3 can be improved; the transition coating 53 can also improve the interlayer adhesion of the fluorine-free heat dissipation type photovoltaic backboard, so that the stability and reliability of the whole fluorine-free heat dissipation type photovoltaic backboard in long-term outdoor use can be improved.
Referring to fig. 2, the photovoltaic module of the embodiment includes a photovoltaic front plate 1, a first encapsulation adhesive layer 2, a solar cell 3, a second encapsulation adhesive layer 4 and a photovoltaic back plate 5, which are sequentially stacked from top to bottom, where the photovoltaic back plate 5 is a fluorine-free heat dissipation type photovoltaic back plate according to the embodiment.
In an example of this embodiment, a photovoltaic module with a fluorine-free heat dissipation type photovoltaic back sheet is manufactured as follows:
1. coating a first polyester coating layer 51 and a second polyester coating layer on the upper surface and the lower surface of the PET substrate layer respectively, wherein the thickness of the first polyester coating layer 51 is 10 mu m, and the thickness of the second polyester coating layer is 5 mu m, and placing the coated PET substrate layer in an oven for drying treatment;
2. after drying treatment, depositing a layer of inorganic film made of ferric oxide on the lower surface of the second polyester coating, and then continuously depositing a layer of inorganic film made of chromium oxide, wherein the sum of the thicknesses of the two layers of inorganic films is controlled to be 10 mu m;
3. coating a layer of room-temperature self-drying organic silicon resin coating with the thickness of 15 mu m on the lower surface of an inorganic film made of chromium oxide, and drying and curing at room temperature to obtain the fluorine-free heat dissipation type photovoltaic backboard;
4. the photovoltaic module of the example is manufactured by using a lamination technology through the photovoltaic front plate 1, the first packaging adhesive layer 2, the solar cell 3, the second packaging adhesive layer 4 and the cured fluorine-free heat dissipation type photovoltaic backboard.
Comparing the fluoride-free heat dissipation type photovoltaic backboard with the existing fluorocarbon coating photovoltaic backboard, the fluoride-free heat dissipation type photovoltaic backboard is found to have no change in appearance performance after the 150kwh ultraviolet-damp-heat resistance test, is superior to the existing fluorocarbon coating photovoltaic backboard, has sand falling performance which is also superior to the existing fluorocarbon coating photovoltaic backboard by 1.5L/mum, and has other performances such as yellowing performance which are not weaker than the existing fluorocarbon coating photovoltaic backboard.
Comparing the photovoltaic module of this example with the existing photovoltaic module using fluorocarbon coating photovoltaic back plate on the market, under the same outdoor condition, the temperature of the photovoltaic module is tested every two hours, and it is found that: the temperature of the photovoltaic module using this example is at least 1 ℃ lower than the temperature of the existing photovoltaic modules on the market using fluorocarbon coated photovoltaic back sheets.
While preferred embodiments of the present utility model have been described, additional variations and modifications in those 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 embodiment and all such alterations and modifications as fall within the scope of the embodiments of the utility model.
The foregoing has outlined rather broadly the more detailed description of the utility model in order that the detailed description of the utility model that follows may be better understood, and in order that the present principles and embodiments may be better understood; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.
Claims (10)
1. The fluoride-free heat dissipation type photovoltaic backboard is characterized by comprising an intermediate substrate layer; the upper surface of the middle substrate layer is coated with a first polyester coating close to the solar cell, and the lower surface of the middle substrate layer is coated with a transition coating;
the lower surface of the transition coating is provided with a heat dissipation functional layer, the lower surface of the heat dissipation functional layer is also coated with a weather-proof coating contacting with external air, and the weather-proof coating is an organosilicon coating.
2. The fluorine-free heat dissipation type photovoltaic backsheet according to claim 1, wherein the heat dissipation functional layer is a heat dissipation oxide layer having a thickness of 5-10 μm.
3. The fluoride-free heat dissipation type photovoltaic back sheet according to claim 2, wherein the heat dissipation oxide layer is a single-layer inorganic film or a multi-layer inorganic film formed by depositing far infrared ceramic powder, far infrared ceramic fiber, zirconium dioxide, ferric oxide, chromium oxide or silicon dioxide on the surface of the transition coating.
4. The fluorine-free heat dissipation type photovoltaic backsheet according to claim 1, wherein the silicone coating is a room temperature self-drying silicone coating having a thickness of 10-20 μm.
5. The fluorine-free heat dissipation type photovoltaic back sheet according to claim 4, wherein the room temperature self-drying type organic silicon coating is an organic silicon resin coating and/or an organic silicon modified epoxy resin coating.
6. A fluorine-free heat dissipation type photovoltaic backsheet according to claim 1, characterized in that the transition coating is a second polyester coating with a thickness of 5-100 μm.
7. The fluorine-free heat dissipation type photovoltaic backsheet of claim 6 wherein the second polyester coating is a white polyester coating or a transparent polyester coating.
8. The fluorine-free heat dissipation type photovoltaic backsheet according to claim 1, wherein the first polyester coating is a white polyester coating having a thickness of 10-100 μm.
9. The fluorine-free heat dissipation type photovoltaic backsheet according to claim 1, wherein the intermediate substrate layer is a PET substrate layer or a PP substrate layer having a thickness of 200-300 μm.
10. A photovoltaic module comprising a photovoltaic front plate, a first packaging adhesive layer, a solar cell, a second packaging adhesive layer and a photovoltaic back plate which are sequentially stacked from top to bottom, wherein the photovoltaic back plate is a fluorine-free heat dissipation type photovoltaic back plate according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320016950.8U CN219677271U (en) | 2023-01-04 | 2023-01-04 | Fluoride-free heat dissipation type photovoltaic backboard and photovoltaic module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320016950.8U CN219677271U (en) | 2023-01-04 | 2023-01-04 | Fluoride-free heat dissipation type photovoltaic backboard and photovoltaic module |
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|---|---|
| CN219677271U true CN219677271U (en) | 2023-09-12 |
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| CN202320016950.8U Active CN219677271U (en) | 2023-01-04 | 2023-01-04 | Fluoride-free heat dissipation type photovoltaic backboard and photovoltaic module |
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| Country | Link |
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- 2023-01-04 CN CN202320016950.8U patent/CN219677271U/en active Active
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