CN115132868A - Light photovoltaic module, method for manufacturing light photovoltaic module and photovoltaic power generation system - Google Patents
Light photovoltaic module, method for manufacturing light photovoltaic module and photovoltaic power generation system Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 17
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- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 48
- 239000011737 fluorine Substances 0.000 claims abstract description 48
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000003063 flame retardant Substances 0.000 claims abstract description 44
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000002313 adhesive film Substances 0.000 claims abstract description 33
- 238000004806 packaging method and process Methods 0.000 claims abstract description 26
- 238000002834 transmittance Methods 0.000 claims abstract description 14
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- 230000035939 shock Effects 0.000 claims abstract description 6
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- 239000004744 fabric Substances 0.000 claims description 16
- 239000002033 PVDF binder Substances 0.000 claims description 12
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- 239000003365 glass fiber Substances 0.000 claims description 11
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 11
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 11
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- 238000000576 coating method Methods 0.000 claims description 5
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
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- Microelectronics & Electronic Packaging (AREA)
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Abstract
The invention provides a light photovoltaic module, a method for manufacturing the light photovoltaic module and a photovoltaic power generation system, and relates to the technical field of photovoltaics. The method comprises the following steps: the light impact-resistant front plate layer is bonded with the battery layer through a packaging adhesive film, the battery layer is bonded with the flame-retardant layer through a packaging adhesive film, and the flame-retardant layer is bonded with the back plate layer through self-adhesive; the lightweight impact resistant front panel layer comprises: the film comprises a fluorine-containing weather-resistant layer, a support material layer and an inner bonding layer which are sequentially laminated, wherein the support material layer is made of a PC material. The light photovoltaic module has the advantages that the front plate is guaranteed to have excellent light transmittance and thin thickness, the light photovoltaic module is endowed with excellent impact resistance, and the application range of the light photovoltaic module is expanded greatly. Effectively promote light photovoltaic module's shock resistance and fire behavior, various installation environment demands of better adaptation. The structure is simpler and more optimized, and the preparation technology is simple, and is convenient for popularization and large-scale manufacturing production.
Description
Technical Field
The invention relates to the technical field of photovoltaics, in particular to a light photovoltaic module, a method for manufacturing the light photovoltaic module and a photovoltaic power generation system.
Background
The photovoltaic module is the core part of photovoltaic power generation system, and its effect is the electric energy with light energy conversion, because traditional photovoltaic module adopts toughened glass as surface packaging material, toughened glass hardness is high, so traditional photovoltaic module exists not have flexibility, inflexible shortcoming, can't laminate and install on curved surface object, and glass thickness generally is more than 3.2mm simultaneously, leads to the weight of photovoltaic module itself to reach 12 kg/square meter, and the demand of lightly installing can't be satisfied to subassembly weight. The photovoltaic module can not meet the application field with lower bearing load requirement when bringing inconvenience to installation and construction.
In some technologies, a PET (polyethylene terephthalate) material or a material formed by laminating fiber resin and PET is used as a support material of a front plate of the component, and the poor impact resistance of PET generally causes the problem of insufficient impact resistance, so that the long-term outdoor use of the photovoltaic component cannot be met.
In addition, the photovoltaic module is mainly applied and installed on the surface of a building such as a roof, which puts higher requirements on the fire resistance of the light photovoltaic module. The existing light photovoltaic module cannot meet the fire-proof requirement on the surface of a building due to the insufficient flame-retardant capability of the adopted high polymer material.
Disclosure of Invention
In view of the above, the present invention has been made to provide a method of manufacturing a lightweight photovoltaic module and a photovoltaic power generation system that solve the above problems or partially solve the above problems.
A first aspect of an embodiment of the present invention provides a lightweight photovoltaic module, including: the battery comprises a light impact-resistant front plate layer, a battery layer, a flame-retardant layer and a back plate layer;
the light anti-impact front plate layer is bonded with the battery layer through a packaging adhesive film, the thickness of the light anti-impact front plate layer is 0.3-2.2mm, and the light transmittance is more than 85%;
the battery layer is bonded with the flame-retardant layer through the packaging adhesive film, or the battery layer is bonded with the back plate layer through the packaging adhesive film;
the flame-retardant layer is bonded with the back plate layer through self-adhesive glue;
wherein the lightweight impact resistant front sheet layer comprises: the light shock-resistant packaging film comprises a fluorine-containing weather-resistant layer, a supporting body material layer and an inner bonding layer which are sequentially stacked, wherein the inner bonding layer is used for bonding the light shock-resistant front plate layer and the packaging adhesive film;
the support material layer is made of PC material.
Optionally, the PC material comprises: pure PC resin material, PC-PET alloy material, PC-PBT alloy material or modified toughening material of PC;
the thickness of the PC material is 0.25-2.0 mm.
Optionally, the fluorine-containing weathering layer includes: fluorine-containing coating, ETFE, PVF or PVDF fluorine-containing transparent film;
if the fluorine-containing weather-resistant layer is the PVDF fluorine-containing transparent film, the PVDF fluorine-containing transparent film is bonded with the supporting material layer through an adhesive.
Optionally, the inner adhesive layer comprises: acrylic, fluorocarbon resin or polyurethane type coatings, or polyolefin type transparent films, or fluorine-containing film type transparent films;
if the inner adhesive layer is the polyolefin type transparent film or the fluorine-containing film type transparent film, the polyolefin type transparent film or the fluorine-containing film type transparent film needs to be adhered to the support material layer through the adhesive.
Optionally, if the fluorinated weather-resistant layer is the PVF and the inner adhesive layer is the polyolefin-type transparent film, the thickness of the PC material is 0.9mm, the thickness of the PVF is 0.025mm, the thickness of the polyolefin-type transparent film is 0.075mm, the total thickness of the lightweight impact-resistant front plate layer is 1.05mm, and the light transmittance is 89%.
Optionally, if the fluorine-containing weather-resistant layer is ETFE, the inner adhesive layer is a fluorine-containing film type transparent film, the thickness of the PC material is 1.0mm, the thickness of ETFE is 0.035mm, the thickness of the fluorine-containing film type transparent film is 0.015mm, the total thickness of the lightweight impact-resistant front panel layer is 1.0mm, and the light transmittance is 88%.
Optionally, the flame-retardant layer is of a flame-retardant fiberglass cloth structure, the refractive index of the flame-retardant fiberglass cloth is 1.43-1.49, and the gram weight of the selected flame-retardant fiberglass cloth is 50-300 g/square meter.
If the flame-retardant glass fiber cloth is bonded with the battery layer through the packaging adhesive film, the flame-retardant glass fiber cloth is soaked and wrapped by the packaging adhesive film in the laminating manufacturing process of the light photovoltaic module.
A second aspect of embodiments of the present invention provides a method for manufacturing a lightweight photovoltaic module according to any one of the first aspect, the method including:
sequentially laminating the light impact-resistant front plate layer, the battery layer, the flame-retardant layer and the back plate layer to form a first photovoltaic module to be laminated; or,
sequentially laminating the light impact-resistant front plate layer, the battery layer and the back plate layer to form a second photovoltaic module to be laminated;
putting the first photovoltaic module to be laminated or the second photovoltaic module to be laminated into a laminating machine, wherein the laminating temperature range of the laminating machine is set to be 100-150 ℃;
vacuumizing the first photovoltaic module to be laminated or the second photovoltaic module to be laminated after being laid into the inner cavity of the laminating machine, wherein the vacuumizing time is 240-800S, and the vacuum degree is 5-25 Pa;
pressurizing the first photovoltaic module to be laminated or the second photovoltaic module to be laminated by using the laminating machine;
conveying the first photovoltaic module to be laminated or the second photovoltaic module to be laminated to a cold pressing area through a conveyor belt for cooling, wherein the cold pressing time is 300-600S, the cold pressing pressure is 30-100kPa, and the cold pressing temperature is 15-40 ℃;
applying the flame-retardant layer to a back plate layer of the cooled second photovoltaic module to be laminated;
wherein the pressurizing is carried out in three stages, the pressurizing pressure of the first pressurizing stage is 35-60 (-kPa), the pressurizing time is 120-240S, the pressurizing pressure of the second pressurizing stage is 60-85 (-kPa), the pressurizing time is 120-240S, the pressurizing pressure of the third pressurizing stage is 85-100 (-kPa), and the pressurizing time is 120-900S.
Optionally, setting the laminating temperature of the laminator to 145 ℃, the laminating time to 20min, and the laminating pressure to 100 Kpa; alternatively, the laminating temperature of the laminator is set to 135 ℃, the laminating time is set to 18min, and the laminating pressure is set to 100 Kpa.
A third aspect of embodiments of the present invention provides a photovoltaic power generation system, including a lightweight photovoltaic module as described in any one of the first aspect.
According to the light photovoltaic module provided by the invention, the support material layer is made of the high-light-transmission impact-resistant PC material, and the material has excellent performances such as high light transmission, high impact resistance and the like, so that the problem of insufficient impact resistance of the existing light photovoltaic module is effectively solved. The light photovoltaic module is endowed with excellent impact resistance while the front panel is ensured to have excellent light transmission performance and thinner thickness. And the weight of the light photovoltaic module is reduced to about 4kg per square meter, and is reduced by 60 percent compared with the weight of a glass module, so that the application range of the light photovoltaic module is expanded greatly.
In addition, add fire-retardant layer in backplate part and promote light photovoltaic module's fire behavior, can effectively promote light photovoltaic module's shock resistance and fire behavior under the prerequisite that satisfies light photovoltaic module light, the various installation environment demands of better adaptation. Simultaneously, compared with the existing light photovoltaic module, the light photovoltaic module is simpler and more optimized in structure, simple in preparation process, convenient to popularize and manufacture on a large scale.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural view of a lightweight photovoltaic module according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a lightweight impact-resistant front panel layer 1 in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The lightweight photovoltaic module of the present invention comprises: the battery comprises a light impact-resistant front plate layer, a battery layer, a flame-retardant layer and a back plate layer; the light impact-resistant front plate layer is bonded with the battery layer through a packaging adhesive film, the thickness of the light impact-resistant front plate layer is 0.3-2.2mm, and the light transmittance is more than 85%; the battery layer and the flame-retardant layer are also bonded through a packaging adhesive film, or the battery layer and the back plate layer are bonded through a packaging adhesive film; the flame-retardant layer is bonded with the back plate layer through self-adhesive glue. That is, in the structure of the lightweight photovoltaic module of the present invention, the outermost layer may be a flame retardant layer, or may be a backsheet layer. If the flame-retardant layer is the outermost layer, the fireproof requirement on the surface of a building can be better met compared with a structure that the back plate layer is the outermost layer.
Referring to fig. 1, a schematic structural diagram of a lightweight photovoltaic module according to an embodiment of the present invention is schematically shown. Fig. 1 includes: the solar cell module comprises a light impact-resistant front plate layer 1, an encapsulation adhesive film 2, a cell layer 3, an encapsulation adhesive film 4, a flame-retardant layer 5 and a back plate layer 6. It can be appreciated that fig. 1 uses the backsheet layer 6 as the outermost layer of the overall lightweight photovoltaic module. The packaging adhesive film 2 and the packaging adhesive film 4 may also be referred to as adhesive film layers.
The lightweight impact resistant front panel layer in embodiments of the present invention comprises: the packaging film comprises a fluorine-containing weather-resistant layer, a supporting body material layer and an inner bonding layer which are sequentially laminated, wherein the inner bonding layer is used for bonding a light impact-resistant front plate layer 1 and a packaging adhesive film 2; the support material layer is made of a PC material.
Referring to fig. 2, a schematic structural diagram of a lightweight impact-resistant front panel layer 1 according to an embodiment of the present invention is exemplarily shown. Fig. 2 includes: a fluorine-containing weather-resistant layer 11, a support material layer 12, and an inner adhesive layer 13.
In the embodiment of the present invention, the fluorine-containing weather-resistant layer 11 includes: a fluorine-containing coating layer, an ETFE (ethylene-tetrafluoroethylene copolymer), a PVF (polyvinyl fluoride), or a PVDF (polyvinylidene fluoride) fluorine-containing transparent film; that is, the fluorine-containing weather-resistant layer 11 may be made of a fluorine-containing coating layer, ETFE, PVF, or PVDF fluorine-containing transparent film.
Because of the PVDF fluorine-containing transparent film, if the fluorine-containing weather-resistant layer 1 is made of the PVDF fluorine-containing transparent film, the PVDF fluorine-containing transparent film needs to be bonded with the support material layer 12 through an adhesive. Thereby ensuring that the PVDF fluorine-containing transparent film needs to be well bonded with the support material layer 12.
In the embodiment of the present invention, the support material layer 12 is made of PC (polycarbonate) material, and the PC material includes: pure PC resin material, PC-PET (PET is polyethylene terephthalate) alloy material, PC-PBT (PBT is polybutylene terephthalate) alloy material or modified toughening material of PC; the thickness of the PC material can be chosen to be 0.25-2.0 mm.
In the embodiment of the present invention, the inner adhesive layer 13 includes: a coating of acrylic, fluorocarbon resin or polyurethane type, or a transparent film of polyolefin type, or a transparent film of fluorine-containing film type; if the inner adhesive layer 13 is a polyolefin type transparent film or a fluorine-containing film type transparent film, the polyolefin type transparent film or the fluorine-containing film type transparent film needs to be adhered to the support material layer 12 by an adhesive.
In the embodiment of the invention, a better light impact-resistant front plate layer can be formed by the following steps: the fluorinated weather-resistant layer 11 is PVF, the inner adhesive layer 13 is a polyolefin type transparent film, the thickness of the PC material is 0.9mm, the thickness of the PVF is 0.025mm, the thickness of the polyolefin type transparent film is 0.075mm, the total thickness of the whole light impact-resistant front plate layer is 1.05mm, and the light transmittance is 89%. Another preferred lightweight impact resistant front panel layer may be formed by: the fluorine-containing weather-resistant layer 11 is ETFE, the inner bonding layer 13 is a fluorine-containing film type transparent film, the thickness of the PC material is 1.0mm, the thickness of the ETFE is 0.035mm, the thickness of the fluorine-containing film type transparent film is 0.015mm, the total thickness of the whole light impact-resistant front plate layer is 1.0mm, and the light transmittance is 88%.
In the embodiment of the invention, the materials of the packaging adhesive films 2 and 4 are fused and crosslinked in the lamination process of the light photovoltaic module so as to bond and combine the materials of all layers of the light photovoltaic module into a whole, and the materials of the packaging adhesive films 2 and 4 have excellent high light transmittance and weather resistance, and can be selected from materials such as POE (polyolefin), EVA (ethylene-vinyl acetate copolymer) or PVB (polyvinyl butyral).
In the embodiment of the invention, the battery layer 3 is a core power generation unit of the light photovoltaic module, and the battery layer 3 can be compatible with the conventional single crystal and polycrystalline battery slices.
In the embodiment of the invention, the flame-retardant layer 5 adopts a flame-retardant glass fiber cloth structure, the glass fiber material has good flame-retardant performance, and if the flame-retardant glass fiber cloth is bonded with the battery layer 3 through the packaging adhesive film 4, the flame-retardant glass fiber cloth is soaked and wrapped by the packaging adhesive film 4 in the lamination manufacturing process of the light photovoltaic module. In addition, in order to ensure good appearance of the light photovoltaic module, the refractive index of the selected flame-retardant glass fiber cloth is 1.43-1.49, and the gram weight of the selected flame-retardant glass fiber cloth is 50-300 g/square meter.
In the embodiment of the present invention, the material of the back sheet layer 6 needs to have good electrical insulation and weather resistance, so various structural types of back sheet materials such as TPC, KPC, TPO, KPO, CPC, reinforced PET, etc. can be selected.
Since the light weight photovoltaic module is different in composition from the currently known photovoltaic modules, the manufacturing method is different. The method for manufacturing the light photovoltaic module comprises the following steps:
step S1: sequentially laminating a light impact-resistant front plate layer, a battery layer, a flame-retardant layer and a back plate layer to form a first photovoltaic module to be laminated; or sequentially laminating the light impact-resistant front plate layer, the battery layer and the back plate layer to form a second photovoltaic module to be laminated;
step S2: putting the first photovoltaic module to be laminated or the second photovoltaic module to be laminated into a laminating machine, and setting the laminating temperature range of the laminating machine to be 100-150 ℃;
step S3: after laying a first photovoltaic module to be laminated or a second photovoltaic module to be laminated and entering an inner cavity of a laminating machine, vacuumizing for 240-800S, wherein the vacuum degree is 5-25 Pa;
step S4: pressurizing the first photovoltaic module to be laminated or the second photovoltaic module to be laminated by using a laminating machine, wherein the pressurizing is divided into three stages, the pressurizing pressure of the first pressurizing stage is 35-60 (-kPa), the pressurizing time is 120-240S, the pressurizing pressure of the second pressurizing stage is 60-85 (-kPa), the pressurizing time is 120-240S, the pressurizing pressure of the third pressurizing stage is 85-100 (-kPa), and the pressurizing time is 120-900S;
step S5: conveying the first photovoltaic module to be laminated or the second photovoltaic module to be laminated to a cold pressing area through a conveyor belt for cooling, wherein the cold pressing time is 300-600S, the cold pressing pressure is 30-100kPa, and the cold pressing temperature is 15-40 ℃;
step S6: and applying the flame-retardant layer to the cooled back plate layer of the second photovoltaic module to be laminated.
As preferable data, the laminating temperature of the laminator was set to 145 ℃, the laminating time was set to 20min, and the laminating pressure was set to 100 Kpa; alternatively, the laminating temperature of the laminator was set at 135 ℃, the laminating time was set at 18min, and the laminating pressure was set at 100 Kpa.
Specific example of production of a certain product 1: the composite material of ETFE/PC/fluorine-containing adhesive layer with the thickness of 1.0mm is used as a light impact-resistant front plate layer 1, a high-transmittance POE (polyolefin elastomer) film with the thickness of 0.5mm is used as an encapsulation adhesive film 2, an M6 single crystal high-efficiency perc battery which is connected in series welding is used, the specification of the battery is 166mm X166mm and is used as a battery layer 3, a high-cutoff POE film with the thickness of 0.5mm is used as an encapsulation adhesive film 4, flame-retardant glass fiber cloth with the refractive index of 1.45 and the gram weight of 200 is used as a flame-retardant layer 5, and a TPC (thermoplastic elastomer) material with the thickness of 0.3mm is used as a back plate layer 6, and the 6 layers are sequentially laminated to form the light photovoltaic module to be laminated.
And putting the light photovoltaic module to be laminated into a laminating machine, wherein the laminating temperature range is set to be 100-150 ℃, the laminating time is set to be 20min, and the laminating pressure is set to be 100 Kpa.
In the vacuumizing stage, after the light photovoltaic module to be laminated is laid and laminated, vacuumizing the inner cavity of a laminating machine, wherein the vacuumizing time is 240-800S, and the vacuum degree is 5-25 Pa;
in the first pressurizing stage, the light photovoltaic module is pressurized, wherein the pressure is 35-60 (-kPa), and the pressurizing time is 120-240S; in the second pressurizing stage, the light photovoltaic module is continuously pressurized, the pressure is 60-85 (-kPa), and the pressurizing time is 120-240S; and in the third pressurizing stage, the light photovoltaic module is continuously pressurized, the pressure is 85-100 (-kPa), and the pressurizing time is 120-900S.
And in the cooling stage, the light photovoltaic module after hot pressing is conveyed to a cold pressing area through a conveyor belt for cold pressing, wherein the cold pressing time is 300-600S, the cold pressing pressure is 30-100kPa, and the cold pressing temperature is 15-40 ℃.
In the production of the above specific finished product 1, a multilayer composite film of PVF/PC/polyolefin film may also be preferably used as the light impact-resistant front plate layer 1, wherein the PVF has a thickness of 0.025mm, the PC has a thickness of 0.9mm, the polyolefin film has a thickness of 0.075mm, the light impact-resistant front plate layer has a total thickness of 1.0mm, and the light transmittance is 88%. The rest is kept unchanged, and a finished product 2 is manufactured.
In the production of the specific finished product 1, the packaging adhesive film 2 can also adopt a high-transmittance EVA (ethylene vinyl acetate) adhesive film, the packaging adhesive film 4 can also adopt a high-cutoff EVA adhesive film, the laminating temperature is set to be 135 ℃, the laminating time is set to be 18min, and the laminating pressure is set to be 100 Kpa. The rest is kept unchanged, and a finished product 3 is manufactured.
In order to verify the performance of the lightweight photovoltaic module according to the embodiment of the present invention, the manufactured finished products 1, 2, and 3 were respectively subjected to an impact test with the currently known lightweight photovoltaic module (as a comparative example), and the impact test was performed according to the ball drop test of UL1703, so as to obtain the following comparison table:
as can be seen from the above table, compared with the impact resistance of the existing light photovoltaic module, the light photovoltaic module provided by the embodiment of the invention is greatly improved, and the long-term outdoor use of the light photovoltaic module is completely satisfied.
Based on the light photovoltaic module, the embodiment of the invention further provides a photovoltaic power generation system, and the photovoltaic power generation system comprises the light photovoltaic module.
Through the above examples, the light photovoltaic module provided by the invention adopts the high-light-transmission impact-resistant PC material to prepare the support material layer, and the material has excellent performances such as high light transmission, high impact resistance and the like, and effectively solves the problem of insufficient impact resistance of the existing light photovoltaic module. The light photovoltaic module is endowed with excellent impact resistance while the front panel is ensured to have excellent light transmission performance and thinner thickness. And the weight of the light photovoltaic module is reduced to about 4kg per square meter, and is reduced by 60 percent compared with the weight of a glass module, so that the application range of the light photovoltaic module is greatly expanded.
In addition, the fireproof capacity of the light photovoltaic module is improved by adding the flame-retardant layer to the back plate part, so that the impact resistance and the fireproof capacity of the light photovoltaic module can be effectively improved on the premise of meeting the light weight of the light photovoltaic module, and the light photovoltaic module can better adapt to various installation environment requirements. Simultaneously, compared with the existing light photovoltaic module, the light photovoltaic module is simpler and more optimized in structure, simple in preparation process, convenient to popularize and manufacture on a large scale.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A lightweight photovoltaic module, comprising: the battery comprises a light impact-resistant front plate layer, a battery layer, a flame-retardant layer and a back plate layer;
the light anti-impact front plate layer is bonded with the battery layer through a packaging adhesive film, the thickness of the light anti-impact front plate layer is 0.3-2.2mm, and the light transmittance is more than 85%;
the battery layer is bonded with the flame-retardant layer through the packaging adhesive film, or the battery layer is bonded with the back plate layer through the packaging adhesive film;
the flame-retardant layer is bonded with the back plate layer through self-adhesive glue;
wherein the lightweight impact resistant front sheet layer comprises: the light shock-resistant packaging film comprises a fluorine-containing weather-resistant layer, a supporting body material layer and an inner bonding layer which are sequentially stacked, wherein the inner bonding layer is used for bonding the light shock-resistant front plate layer and the packaging adhesive film;
the support material layer is made of PC material.
2. The lightweight photovoltaic module of claim 1, wherein said PC material comprises: pure PC resin material, PC-PET alloy material, PC-PBT alloy material or modified toughening material of PC;
the thickness of the PC material is 0.25-2.0 mm.
3. The lightweight photovoltaic module of claim 2, wherein the fluorine-containing weatherable layer comprises: fluorine-containing coating, ETFE, PVF or PVDF fluorine-containing transparent film;
if the fluorine-containing weather-resistant layer is the PVDF fluorine-containing transparent film, the PVDF fluorine-containing transparent film is bonded with the supporting material layer through an adhesive.
4. The lightweight photovoltaic module of claim 3, wherein said inner adhesive layer comprises: acrylic, fluorocarbon resin or polyurethane type coatings, or polyolefin type transparent films, or fluorine-containing film type transparent films;
if the inner bonding layer is the polyolefin type transparent film or the fluorine-containing film type transparent film, the polyolefin type transparent film or the fluorine-containing film type transparent film needs to be bonded with the supporting material layer through the adhesive.
5. The lightweight photovoltaic module of claim 4, wherein if the fluorine-containing weatherable layer is the PVF and the inner adhesive layer is the polyolefin-type transparent film, the thickness of the PC material is 0.9mm, the thickness of the PVF is 0.025mm, the thickness of the polyolefin-type transparent film is 0.075mm, the total thickness of the lightweight impact resistant front sheet layer is 1.05mm, and the light transmittance is 89%.
6. The lightweight photovoltaic module of claim 4, wherein if said fluorine-containing weatherable layer is said ETFE and said inner adhesive layer is said fluorine-containing film type transparent film, the thickness of said PC material is 1.0mm, the thickness of said ETFE is 0.035mm, the thickness of said fluorine-containing film type transparent film is 0.015mm, the total thickness of said lightweight impact resistant front sheet layer is 1.0mm, and the light transmittance is 88%.
7. The lightweight photovoltaic module according to claim 5, wherein the flame retardant layer is of a flame retardant fiberglass cloth structure, the flame retardant fiberglass cloth has a refractive index of 1.43 to 1.49, and the selected flame retardant fiberglass cloth has a grammage of 50 to 300 g/square meter.
If the flame-retardant glass fiber cloth is bonded with the battery layer through the packaging adhesive film, the flame-retardant glass fiber cloth is soaked and wrapped by the packaging adhesive film in the laminating manufacturing process of the light photovoltaic module.
8. A method of making a lightweight photovoltaic module according to any of claims 1 to 7, the method comprising:
sequentially laminating the light impact-resistant front plate layer, the battery layer, the flame-retardant layer and the back plate layer to form a first photovoltaic module to be laminated; or,
sequentially laminating the light impact-resistant front plate layer, the battery layer and the back plate layer to form a second photovoltaic module to be laminated;
putting the first photovoltaic module to be laminated or the second photovoltaic module to be laminated into a laminating machine, wherein the laminating temperature range of the laminating machine is set to be 100-150 ℃;
vacuumizing the first photovoltaic module to be laminated or the second photovoltaic module to be laminated after being laid into the inner cavity of the laminating machine, wherein the vacuumizing time is 240-800S, and the vacuum degree is 5-25 Pa;
pressurizing the first photovoltaic module to be laminated or the second photovoltaic module to be laminated by using the laminating machine;
conveying the first photovoltaic module to be laminated or the second photovoltaic module to be laminated to a cold pressing area through a conveyor belt for cooling, wherein the cold pressing time is 300-600S, the cold pressing pressure is 30-100kPa, and the cold pressing temperature is 15-40 ℃;
applying the flame-retardant layer to a back plate layer of the cooled second photovoltaic module to be laminated;
wherein the pressurizing is carried out in three stages, the pressurizing pressure of the first pressurizing stage is 35-60 (-kPa), the pressurizing time is 120-240S, the pressurizing pressure of the second pressurizing stage is 60-85 (-kPa), the pressurizing time is 120-240S, the pressurizing pressure of the third pressurizing stage is 85-100 (-kPa), and the pressurizing time is 120-900S.
9. The method according to claim 8, characterized in that the laminating temperature of the laminator is set at 145 ℃, the laminating time is 20min, and the laminating pressure is 100 Kpa; or,
the laminating temperature of the laminator was set at 135 ℃, the laminating time was set at 18min, and the laminating pressure was set at 100 Kpa.
10. A photovoltaic power generation system comprising the lightweight photovoltaic module of any of claims 1-7.
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| CN109192801A (en) * | 2018-07-16 | 2019-01-11 | 苏州赛伍应用技术股份有限公司 | A kind of light-weight photovoltaic module and preparation method thereof |
| CN110137288A (en) * | 2019-06-12 | 2019-08-16 | 江苏舜大新能源科技有限公司 | A kind of light weight solar electrification component |
| CN110258981A (en) * | 2019-06-12 | 2019-09-20 | 江苏舜大新能源科技有限公司 | A kind of roofing integrated power generation component |
| CN111435687A (en) * | 2018-12-25 | 2020-07-21 | 汉能移动能源控股集团有限公司 | Packaging structure and packaging method of solar cell |
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| CN109192801A (en) * | 2018-07-16 | 2019-01-11 | 苏州赛伍应用技术股份有限公司 | A kind of light-weight photovoltaic module and preparation method thereof |
| CN111435687A (en) * | 2018-12-25 | 2020-07-21 | 汉能移动能源控股集团有限公司 | Packaging structure and packaging method of solar cell |
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