CN110970516A - Flexible solar cell front plate, manufacturing method thereof and flexible solar cell - Google Patents
Flexible solar cell front plate, manufacturing method thereof and flexible solar cell Download PDFInfo
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- CN110970516A CN110970516A CN201811133500.7A CN201811133500A CN110970516A CN 110970516 A CN110970516 A CN 110970516A CN 201811133500 A CN201811133500 A CN 201811133500A CN 110970516 A CN110970516 A CN 110970516A
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- -1 polytetrafluoroethylene Polymers 0.000 claims description 28
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 18
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- 229920002313 fluoropolymer Polymers 0.000 claims description 11
- 239000004811 fluoropolymer Substances 0.000 claims description 11
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 10
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 10
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- 229920001155 polypropylene Polymers 0.000 claims description 8
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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
-
- 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
Abstract
The invention discloses a method for manufacturing a flexible solar cell front plate, which comprises the following steps: carrying out multi-layer co-extrusion on the raw material for forming the weather-resistant layer and the raw material for forming the base layer through a multi-layer co-extrusion device to obtain a co-extrusion layer of the weather-resistant layer and the base layer; and arranging a water resisting layer on the surface of the base layer to obtain the flexible solar cell front plate. According to the method, the weather-resistant layer and the base layer are compounded together through a multi-layer co-extrusion process, and the multi-layer co-extrusion process avoids a bonding process of bonding the weather-resistant layer and the base layer together by using a bonding agent, so that the steps of the manufacturing method of the flexible solar cell front plate are simplified, and the cost is reduced; the weather-resistant layer and the base layer are bonded together without using a bonding agent, and a bonding layer cannot be formed between the weather-resistant layer and the base layer.
Description
Technical Field
The invention belongs to the technical field of flexible solar cells, and particularly relates to a flexible solar cell front plate, a manufacturing method thereof and a flexible solar cell.
Background
The flexible solar cell is one of thin film flexible solar cells, is light in weight, can be folded, rolled and carried conveniently, and can be adhered to the surface of other objects, such as automobile glass, clothes and the like, and can be integrated on a window or a roof, an outer wall or an inner wall. The flexible solar cell comprises a plurality of solar cells arranged from top to bottom in sequence: the battery comprises a battery front plate, a battery core assembly and a battery back plate. In practical applications, flexible solar cells are mostly in a harsh environment, such as wind, rain, sunshine, dust, hard objects, and are not frequently replaced and cleaned, so that the requirements on the front panel of the cell are relatively high: for example, the light transmittance is high, the water resistance and the oxygen isolation are good, the mechanical strength is certain, and the like, and the water resistance performance requirement of some flexible solar cells on the front panel of the cell reaches 10-4g/m2And/day is less.
Generally, the flexible solar cell front panel is made of multiple layers of resins, and because the polarity difference between the multiple layers of resins is large, the multiple layers of resins need to be bonded by using bonding layers with large polarity and then laminated, so that the process steps for manufacturing the flexible solar cell front panel are multiple, and the cost of the flexible solar cell front panel is greatly increased.
Disclosure of Invention
The invention provides a flexible solar cell front plate, a manufacturing method thereof and a flexible solar cell, aiming at solving the technical problems that the flexible solar cell front plate in the prior art has more process steps and the cost of the flexible solar cell front plate is greatly increased.
The technical scheme adopted for solving the technical problem of the invention is to provide a method for manufacturing a flexible solar cell front plate, which comprises the following steps:
carrying out multi-layer co-extrusion on the raw material for forming the weather-resistant layer and the raw material for forming the base layer through a multi-layer co-extrusion device to obtain a co-extrusion layer of the weather-resistant layer and the base layer;
and arranging a water-resistant layer on the surface of the base layer (the surface of the co-extrusion layer of the weather-resistant layer and the base layer, which is far away from the light receiving surface) to obtain the flexible solar cell front plate.
Preferably, the weather-resistant layer is a polymer weather-resistant layer, the base layer is a polymer base layer, and the water-resistant layer is an inorganic substance water-resistant layer.
Preferably, the method of providing the water blocking layer on the surface of the base layer comprises: any one of coating, evaporation, chemical vapor deposition, and atomic layer deposition.
Preferably, the material of the weather-resistant layer includes any one or more of a fluoropolymer, Polymethylmethacrylate (PMMA), Polycarbonate (PC), and Polyimide (PI). Any one of fluoropolymer, polymethyl methacrylate (PMMA), Polycarbonate (PC) and Polyimide (PI) is a base material of the weather-resistant layer, and the material of the weather-resistant layer also comprises an ultraviolet-resistant filler and/or a calcium carbonate filler. The base material means a main constituent material.
Preferably, the material of the base layer includes any one or more of polyethylene terephthalate (PET), polypropylene (PP), polymethyl methacrylate (PMMA), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), Polyaniline (PAN), and Polyamide (PA). Any one or more of polyethylene terephthalate (PET), polypropylene (PP), polymethyl methacrylate (PMMA), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), Polyaniline (PAN) and Polyamide (PA) is used as a base material of the base layer, and the base layer further comprises one or more of calcium carbonate filler, antioxidant filler and plasticizer.
Preferably, the fluoropolymer is any one or more of ethylene-tetrafluoroethylene copolymer (ETFE), polyvinylidene fluoride (PVDF), Polytetrafluoroethylene (PTFE), fluorinated ethylene propylene copolymer (FEP), and copolymer of perfluoropropyl perfluorovinyl ether and Polytetrafluoroethylene (PFA).
Preferably, the material of the water-resistant layer comprises any one or more of aluminum oxide, titanium nitride and titanium oxide. Any one or more of alumina, titanium nitride and titanium oxide is/are used as the base material of the water-resistant layer.
Preferably, the weather-resistant layer has a thickness of 15 to 80 μm, the base layer has a thickness of 100 to 200 μm, and the water-blocking layer has a thickness of 30 to 500 nm.
Preferably, the thickness ratio of the weather-resistant layer to the base layer is 1: (2-10).
According to the manufacturing method of the flexible solar cell front plate, the weather-resistant layer and the base layer are compounded together through a multi-layer co-extrusion process to obtain the co-extrusion layer of the weather-resistant layer and the base layer, the multi-layer co-extrusion process avoids a bonding process of bonding the weather-resistant layer and the base layer together by using a bonding agent, the steps of the manufacturing method of the flexible solar cell front plate are greatly simplified, and the cost is reduced; on the other hand, the co-extrusion layer of the weather-resistant layer and the base layer does not need to be bonded by a bonding agent, and a bonding layer cannot be formed between the weather-resistant layer and the base layer.
Drawings
Fig. 1 is a schematic structural view of a flexible solar cell front sheet in embodiment 2 of the present invention;
fig. 2 is a schematic structural view of a flexible solar cell in embodiment 2 of the present invention.
In the figure: 1-a weatherable layer; 2-a base layer; 4-co-extrusion layer; 5-a water-resistant layer; 6-solar cell chip; 7-a back plate; 8-a first tie layer; 9-a second adhesive layer.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1, the present embodiment provides a flexible solar cell front sheet, comprising: weather-resistant layer 1, basic unit 2, the water blocking layer 5 that set gradually.
The weather-resistant layer 1, the base layer 2 and the water-resistant layer 5 are light-transmitting. The weather-resistant layer 1, the base layer 2 and the water-resistant layer 5 are light-transmitting. The weather-resistant layer 1 has the functions of reinforcement, weather resistance, ultraviolet resistance, moisture resistance, low dielectric constant and high breakdown voltage. The base layer 2 has the functions of water resistance and oxygen isolation. The water-blocking layer 5 functions as high water-blocking.
In this embodiment, the weather-resistant layer 1 is a polymer weather-resistant layer, the material of the weather-resistant layer 1 includes a fluoropolymer, and the fluoropolymer is ethylene-tetrafluoroethylene copolymer (ETFE). The ethylene-tetrafluoroethylene copolymer is a base material of the weather-resistant layer, and the material of the weather-resistant layer also comprises an anti-ultraviolet filler. The base material means a main constituent material.
In this embodiment, the base layer 2 is a polymer base layer, and the material of the base layer 2 includes polyethylene terephthalate (PET). Polyethylene terephthalate is used as a base material of the base layer. The base layer material also comprises calcium carbonate filler, antioxidant filler and plasticizer (mass ratio is 10:1: 1).
In the present embodiment, the water-blocking layer 5 is an inorganic water-blocking layer, and the material of the water-blocking layer 5 includes alumina. Alumina is the base material of the water-resistant layer.
In this example, the weather-resistant layer 1 had a thickness of 25 μm, the base layer 2 had a thickness of 125 μm, and the water-blocking layer 5 had a thickness of 50 nm.
The embodiment also provides a manufacturing method of the flexible solar cell front plate, which comprises the following steps:
1) the raw materials that will form resistant layer 1 and the raw materials that form basic unit 2 carry out the multilayer through the multilayer crowded device altogether and crowd, and is concrete, and the multilayer of this embodiment is crowded device altogether includes the multilayer of extruder and the aircraft nose of extruder is connected altogether and is crowded the die head, and the extruder includes first extruder, second extruder, and the raw materials on resistant layer gets into first extruder and extrudes, and the raw materials on basic unit gets into the second extruder and extrudes. Specifically, the extruder in this embodiment is a screw extruder, the first extruder and the second extruder are both screw extruders, the length-diameter ratio of the first extruder is 22:1, and the length-diameter ratio of the second extruder is 33: 1. The extrusion temperature zones of the first extruder are respectively as follows: 275 deg.C, 300 deg.C, 320 deg.C, 330 deg.C; the head temperature of the first extruder is 340 ℃, and the eye film temperature of the multilayer co-extrusion die head corresponding to the first extruder is 340 ℃. The extrusion temperature zones of the second extruder are respectively as follows: 240 ℃, 265 ℃, 270 ℃, 280 ℃ and 270 ℃; the head temperature of the second extruder is 275 ℃, and the eye film temperature of the multilayer co-extrusion die head corresponding to the second extruder is 275 ℃. The second extruder had a draw ratio of 3 during extrusion. And obtaining the co-extrusion layer 4 of the weather-resistant layer 1 and the base layer 2 through multi-layer co-extrusion.
2) And arranging a waterproof layer 5 on the surface of the base layer 2 of the co-extrusion layer 4 of the weather-resistant layer 1 and the base layer 2 to obtain the flexible solar cell front plate. Specifically, the water-resistant layer 5 is arranged on the surface of the co-extrusion layer 4 of the weather-resistant layer 1 and the base layer 2, which is far away from the light-receiving surface. The method for arranging the water-resistant layer 5 on the surface of the base layer 2 of the co-extruded layer 4 of the weather-resistant layer 1 and the base layer 2 is atomic layer deposition.
According to the manufacturing method of the flexible solar cell front plate, a bonding process that a binder is used for bonding the weather-resistant layer 1 and the base layer 2 together is avoided, and compared with a front plate finally obtained through the bonding process that the binder is used for bonding the weather-resistant layer 1 and the base layer 2 together in the prior art, the cost of the flexible solar cell front plate is reduced by 10-20%, and the light transmittance is improved by 2-3%.
According to the manufacturing method of the flexible solar cell front plate, the weather-resistant layer 1 and the base layer 2 are compounded together through the multilayer co-extrusion process to obtain the co-extrusion layer 4 of the weather-resistant layer 1 and the base layer 2, the multilayer co-extrusion process avoids a bonding process of bonding the weather-resistant layer 1 and the base layer 2 together by using a bonding agent, the steps of the manufacturing method of the flexible solar cell front plate are greatly simplified, and the cost is reduced; on the other hand, need not the binder in the crowded layer 4 of resistant layer 1 and basic unit 2 altogether, just also can not form the tie coat between resistant layer 1 and basic unit 2, for the front bezel of using binder bonding resistant layer and basic unit among the prior art, the light transmissivity of the front bezel that obtains in this embodiment is better, and the thickness of front bezel is thinner.
Example 2
This embodiment provides a flexible solar cell front sheet, which differs from the flexible solar cell front sheet of embodiment 2 in that:
the thickness of the weather-resistant layer is 18 mu m, the thickness of the base layer is 180 mu m, and the thickness ratio of the weather-resistant layer to the base layer is 1: 10.
the present embodiment provides a method for manufacturing the flexible solar cell front panel, which is different from the method in embodiment 2 in that: the extrusion temperature zones of the first extruder are respectively as follows: 282 ℃, 305 ℃, 325 ℃ and 340 ℃; the head temperature of the first extruder is 350 ℃, and the eye film temperature of the multilayer co-extrusion die head corresponding to the first extruder is 345 ℃. The extrusion temperature zones of the second extruder are respectively as follows: 250 deg.C, 275 deg.C, 282 deg.C, 272 deg.C. The second extruder gave a draw ratio of 3.5. Specifically, the extruder in this embodiment is a screw extruder, the first extruder and the second extruder are both screw extruders, the length-diameter ratio of the first extruder is 24:1, and the length-diameter ratio of the second extruder is 25: 1.
The method for arranging the waterproof layer on the surface of the base layer of the co-extrusion layer of the weather-resistant layer and the base layer is chemical vapor deposition.
Example 3
This embodiment provides a flexible solar cell front sheet, which differs from the flexible solar cell front sheet of embodiment 2 in that:
the thickness of the weather-resistant layer is 60 mu m, the thickness of the base layer is 120 mu m, and the thickness ratio of the weather-resistant layer to the base layer is 1: 2.
the present embodiment provides a method for manufacturing the flexible solar cell front panel, which is different from the method in embodiment 2 in that: the extrusion temperature zones of the first extruder are respectively as follows: 290 ℃, 310 ℃, 330 ℃ and 345 ℃; the head temperature of the first extruder is 360 ℃, and the eye film temperature of the multilayer co-extrusion die head corresponding to the first extruder is 350 ℃. The extrusion temperature zones of the second extruder are respectively as follows: 260 deg.C, 285 deg.C, 280 deg.C, 285 deg.C, 275 deg.C. The second extruder had a draw ratio of 4 during extrusion. Specifically, the extruder in this embodiment is a screw extruder, the first extruder and the second extruder are both screw extruders, the length-diameter ratio of the first extruder is 25:1, and the length-diameter ratio of the second extruder is 30: 1.
Example 4
The present embodiments provide a flexible solar cell front sheet comprising: weather-resistant layer, basic unit, the water blocking layer that sets gradually.
The weather-resistant layer, the base layer and the water-resistant layer are light-transmitting. The weather-resistant layer, the base layer and the water-resistant layer are light-transmitting. The weather-resistant layer has the functions of reinforcement, weather resistance, ultraviolet resistance, moisture resistance, low dielectric constant and high breakdown voltage. The base layer has the functions of water resistance and oxygen isolation. The water-resistant layer has the function of high water resistance.
In this embodiment, the weather-resistant layer is a polymeric weather-resistant layer, the material of the weather-resistant layer includes a fluoropolymer, and the fluoropolymer is fluorinated ethylene propylene copolymer (FEP). The fluorinated ethylene propylene copolymer is used as a base material of the weather-resistant layer, and the material of the weather-resistant layer also comprises an anti-ultraviolet filler and a calcium carbonate filler (the mass ratio is 8: 1).
In this embodiment, the base layer is a polymer base layer, and the material of the base layer includes polymethyl methacrylate (PMMA). Polymethyl methacrylate is used as a base material of the base layer. The material of the base layer also includes calcium carbonate filler.
In the present embodiment, the water-blocking layer is an inorganic water-blocking layer, and the material of the water-blocking layer includes titanium nitride. Titanium nitride is a base material of the water-resistant layer.
In this example, the weather-resistant layer was 80 μm thick, the base layer was 100 μm thick, and the water-resistant layer was 500nm thick.
The embodiment also provides a manufacturing method of the flexible solar cell front plate, which comprises the following steps:
1) the raw materials that will form resistant layer and the raw materials that form the basic unit carry out the multilayer through the multilayer coextrusion device and crowd altogether, and the multilayer coextrusion device that this embodiment used is the same with the multilayer coextrusion device in embodiment 2, and the raw materials on resistant layer gets into first extruder and extrudes, and the raw materials on basic unit gets into the second extruder and extrudes.
The extrusion temperature zones of the first extruder are respectively as follows: 280-300 ℃, 300-320 ℃, 330-350 ℃ and 350-360 ℃; the temperature of the head of the first extruder is 350-370 ℃, and the temperature of the eye film of the multilayer co-extrusion die head corresponding to the first extruder is 340-360 ℃. The extrusion temperature zones of the second extruder are respectively as follows: 180-210 ℃, 190-230 ℃ and 180-200 ℃; the temperature of the head of the second extruder is 170-190 ℃, and the temperature of the eye film of the multilayer co-extrusion die head corresponding to the second extruder is 180-210 ℃. The second extruder had a draw ratio of 1 during extrusion.
2) And arranging a waterproof layer on the surface of the base layer of the co-extrusion layer of the weather-resistant layer and the base layer to obtain the flexible solar cell front plate. Specifically, the water-resistant layer is arranged on the surface, far away from the light receiving surface, of the weather-resistant layer and the co-extrusion layer of the base layer. The method for arranging the waterproof layer on the surface of the base layer of the co-extrusion layer of the weather-resistant layer and the base layer is evaporation.
Example 5
The embodiment provides a weather-resistant layer, a base layer and a water-resistant layer which are arranged on a flexible solar cell front plate.
The weather-resistant layer, the base layer and the water-resistant layer are light-transmitting. The weather-resistant layer, the base layer and the water-resistant layer are light-transmitting. The weather-resistant layer has the functions of reinforcement, weather resistance, ultraviolet resistance, moisture resistance, low dielectric constant and high breakdown voltage. The base layer has the functions of water resistance and oxygen isolation. The water-resistant layer has the function of high water resistance.
In this embodiment, the weather-resistant layer is a polymeric weather-resistant layer, the material of the weather-resistant layer includes a fluoropolymer, and the fluoropolymer is a copolymer (PFA) of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene (mass ratio 1: 1). The copolymer of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene is used as the base material of the weather-resistant layer.
In this embodiment, the base layer is a polymer base layer, and the material of the base layer includes polypropylene (PP). Polypropylene is used as a base material of the base layer. The material of the base layer also comprises calcium carbonate filler and antioxidant filler (the mass ratio is 20: 1).
In the present example, the water-blocking layer is an inorganic water-blocking layer, and the material of the water-blocking layer includes alumina and titanium oxide (mass ratio 1: 1). Alumina and titania are the base materials of the water-proof layer.
In this example, the weather-resistant layer was 15 μm thick, the base layer was 200 μm thick, and the water-blocking layer was 30nm thick.
The embodiment also provides a manufacturing method of the flexible solar cell front plate, which comprises the following steps:
1) the raw materials that will form resistant layer and the raw materials that form the basic unit carry out the multilayer through the multilayer coextrusion device and crowd altogether, and the multilayer coextrusion device that this embodiment used is the same with the multilayer coextrusion device in embodiment 2, and the raw materials on resistant layer gets into first extruder and extrudes, and the raw materials on basic unit gets into the second extruder and extrudes.
The extrusion temperature zones of the first extruder are respectively as follows: 300-320 ℃, 320-340 ℃, 340-360 ℃ and 360-370 ℃; the temperature of the head of the first extruder is 370-390 ℃, and the temperature of the eye film of the multilayer co-extrusion die head corresponding to the first extruder is 360-380 ℃. The extrusion temperature zones of the second extruder are respectively as follows: at 210 ℃, 200-210 ℃ and 200-210 ℃; the temperature of the head of the second extruder is 160-250 ℃, 200-300 ℃, 220-300 ℃ and 220-300 ℃, and the temperature of the eye film of the multilayer co-extrusion die head corresponding to the second extruder is 220 ℃. The second extruder had a draw ratio of 4 during extrusion.
2) And arranging a waterproof layer on the surface of the base layer of the co-extrusion layer of the weather-resistant layer and the base layer to obtain the flexible solar cell front plate. Specifically, the water-resistant layer is arranged on the surface, far away from the light receiving surface, of the weather-resistant layer and the co-extrusion layer of the base layer. The method for arranging the waterproof layer on the surface of the base layer of the co-extrusion layer of the weather-resistant layer and the base layer is coating.
Example 6
This embodiment provides a flexible solar cell front sheet, which differs from the solar cell front sheet in embodiment 2 by: the material of the weather-resistant layer comprises polymethyl methacrylate, and the material of the base layer comprises polyethylene naphthalate. Polymethyl methacrylate is a base material of the weather-resistant layer, and the material of the weather-resistant layer also comprises an anti-ultraviolet filler and a calcium carbonate filler (the mass ratio is 5: 1). The polyethylene naphthalate is used as a base material of the base layer, and the base material further comprises calcium carbonate filler.
The embodiment further provides a method for manufacturing the flexible solar cell front panel, which is different from the method in embodiment 2 in that:
the length-diameter ratio of the first extruder is (10-15) to 1, and the length-diameter ratio of the second extruder is (20-25) to 1. The extrusion temperature zones of the first extruder are respectively as follows: 120-125 ℃, 130-135 ℃, 140-145 ℃ and 145-150 ℃; the head temperature of the first extruder is 270 ℃, and the eye film temperature of the multilayer co-extrusion die head corresponding to the first extruder is 270 ℃. The extrusion temperature zones of the second extruder are respectively as follows: 245-255 ℃, 265-275 ℃, 285-290 ℃, 290-305 ℃ and 300-310 ℃; the head temperature of the second extruder is 310 ℃, and the eye film temperature of the multilayer co-extrusion die head corresponding to the second extruder is 310 ℃. The second extruder had a draw ratio of 2 during extrusion.
Example 7
This embodiment provides a flexible solar cell front sheet, which differs from the solar cell front sheet in embodiment 2 by: the material of the weather-resistant layer comprises polycarbonate, and the material of the base layer comprises polyaniline. Polycarbonate is the base material of the weathering layer. Polyaniline is used as a base material of the base layer. The material of the base layer also comprises calcium carbonate filler and a plasticizer (the mass ratio is 10: 3).
The embodiment further provides a method for manufacturing the flexible solar cell front panel, which is different from the method in embodiment 2 in that:
the length-diameter ratio of the first extruder is (20-25) to 1, and the length-diameter ratio of the second extruder is (25-30) to 1. The extrusion temperature zones of the first extruder are respectively as follows: 245-260 ℃, 270-280 ℃, 285-300 ℃ and 300-310 ℃; the head temperature of the first extruder is 305 ℃, and the eye film temperature of the multilayer co-extrusion die head corresponding to the first extruder is 305 ℃. The extrusion temperature zones of the second extruder are respectively as follows: 320-340 ℃, 350-360 ℃, 370-385 ℃, 385-405 ℃ and 395-410 ℃; the head temperature of the second extruder is 410 ℃, and the eye film temperature of the multilayer co-extrusion die head corresponding to the second extruder is 410 ℃.
Example 8
This embodiment provides a flexible solar cell front sheet, which differs from the solar cell front sheet in embodiment 2 by: the material of the weather-resistant layer comprises polyimide and polycarbonate (mass ratio of 2:3), and the material of the base layer comprises polyamide. Polyimide and polycarbonate are base materials of the weather-resistant layer, and the weather-resistant layer also comprises an anti-ultraviolet filler. Polyamide is used as a base material of the base layer. The base layer material also comprises calcium carbonate filler, antioxidant filler and plasticizer (the mass ratio is 5:1: 0.5).
The embodiment further provides a method for manufacturing the flexible solar cell front panel, which is different from the method in embodiment 2 in that:
the length-diameter ratio of the first extruder is (20-25) to 1, and the length-diameter ratio of the second extruder is (15-20) to 1. The extrusion temperature zones of the first extruder are respectively as follows: 275-290 ℃, 300-310 ℃, 320-330 ℃ and 330-345 ℃; the head temperature of the first extruder is 340 ℃, and the eye film temperature of the multilayer co-extrusion die head corresponding to the first extruder is 340 ℃. The extrusion temperature zones of the second extruder are respectively as follows: 185-195 ℃, 200-210 ℃, 215-220 ℃, 220-230 ℃ and 225-235 ℃; the head temperature of the second extruder is 350 ℃, and the eye film temperature of the multilayer co-extrusion die head corresponding to the second extruder is 350 ℃. The second extruder had a draw ratio of 4 during extrusion.
Example 9
This embodiment provides a flexible solar cell front sheet, which differs from the solar cell front sheet in embodiment 2 by: the material of the weather-resistant layer comprises a fluorine-containing polymer, the fluorine-containing polymer is polyvinylidene fluoride, and the material of the base layer comprises polyethylene terephthalate and polybutylene terephthalate (mass ratio is 1: 1). Polyvinylidene fluoride is a base material of the weather-resistant layer, and the material of the weather-resistant layer further comprises an anti-ultraviolet filler and a calcium carbonate filler (the mass ratio is 3: 7). Polyethylene terephthalate and polybutylene terephthalate are used as base materials of the base layer. The material of the base layer also comprises calcium carbonate filler and antioxidant filler (the mass ratio is 7: 1).
The embodiment further provides a method for manufacturing the flexible solar cell front panel, which is different from the method in embodiment 2 in that:
the length-diameter ratio of the first extruder is (10-15) to 1, and the length-diameter ratio of the second extruder is (20-25) to 1. The extrusion temperature zones of the first extruder are respectively as follows: 155-165 ℃, 170-180 ℃, 180-190 ℃ and 190-200 ℃; the head temperature of the first extruder is 195 ℃, and the eye film temperature of the multilayer co-extrusion die head corresponding to the first extruder is 195 ℃. The extrusion temperature zones of the second extruder are respectively as follows: 240-260 ℃, 265-285 ℃, 270-280 ℃, 280-285 ℃ and 270-275 ℃; the head temperature of the second extruder is 275 ℃, and the eye film temperature of the multilayer co-extrusion die head corresponding to the second extruder is 275 ℃.
Example 10
This embodiment provides a flexible solar cell front sheet, which differs from the solar cell front sheet in embodiment 2 by: the material of the weather-resistant layer comprises fluorine-containing polymer, the fluorine-containing polymer is polytetrafluoroethylene, and the material of the base layer comprises polymethyl methacrylate (PMMA). The polytetrafluoroethylene is a base material of the weather-resistant layer. Polymethyl methacrylate is used as a base material of the base layer. The material of the base layer also comprises calcium carbonate filler and antioxidant filler (the mass ratio is 8: 1).
The embodiment further provides a method for manufacturing the flexible solar cell front panel, which is different from the method in embodiment 2 in that:
the length-diameter ratio of the first extruder is (25-30) to 1, and the length-diameter ratio of the second extruder is (10-15) to 1. The extrusion temperature zones of the first extruder are respectively as follows: 300-315 ℃, 325-340 ℃, 350-360 ℃ and 360-380 ℃; the head temperature of the first extruder is 370 ℃, and the eye film temperature of the multilayer co-extrusion die head corresponding to the first extruder is 370 ℃. The extrusion temperature zones of the second extruder are respectively as follows: 120-125 ℃, 130-135 ℃, 140-145 ℃, 145-150 ℃ and 145-150 ℃; the head temperature of the second extruder is 150 ℃, and the eye film temperature of the multilayer co-extrusion die head corresponding to the second extruder is 150 ℃. The second extruder had a draw ratio of 2 during extrusion.
Example 11
As shown in fig. 2, the present embodiment provides a flexible solar cell, which includes a front plate, a first adhesive layer 8, a solar cell chip 6, a second adhesive layer 9, and a back plate 7, which are sequentially disposed in any one of embodiments 1 to 10. Specifically, the front sheet and one surface of the solar cell chip 6 are bonded together with an adhesive, and the other surface of the solar cell chip 6 and the back sheet 7 are bonded together with an adhesive. Among them, the binder may be, for example, ethylene-vinyl acetate copolymer (EVA), 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide (TPO), etc.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A manufacturing method of a flexible solar cell front plate is characterized by comprising the following steps:
carrying out multi-layer co-extrusion on the raw material for forming the weather-resistant layer and the raw material for forming the base layer through a multi-layer co-extrusion device to obtain a co-extrusion layer of the weather-resistant layer and the base layer;
and arranging a water resisting layer on the surface of the base layer to obtain the flexible solar cell front plate.
2. The method for manufacturing the flexible solar cell front plate according to claim 1, wherein the specific method for arranging the water-blocking layer on the surface of the base layer is as follows: any one of coating, evaporation, chemical vapor deposition, and atomic layer deposition.
3. The flexible solar cell front sheet according to claim 1 or 2, wherein the material of the weatherable layer comprises any one or more of a fluoropolymer, a polymethylmethacrylate, a polycarbonate, a polyimide.
4. The flexible solar cell front sheet according to claim 3, wherein the fluoropolymer is any one or more of ethylene-tetrafluoroethylene copolymer, polyvinylidene fluoride, polytetrafluoroethylene, fluorinated ethylene propylene copolymer, perfluoropropyl perfluorovinyl ether copolymer with polytetrafluoroethylene.
5. The flexible solar cell front sheet according to claim 1 or 2, wherein the material of the base layer comprises any one or more of polyethylene terephthalate, polypropylene, polymethyl methacrylate, polybutylene terephthalate, polyethylene naphthalate, polyaniline, polyamide.
6. The flexible solar cell front sheet according to claim 1 or 2, wherein the material of the water blocking layer comprises any one or more of aluminum oxide, titanium nitride and titanium oxide.
7. The flexible solar cell front sheet according to any one of claims 1, 2 or 4, wherein the weatherable layer has a thickness of 15 to 80 μm.
8. The flexible solar cell front sheet according to any one of claims 1, 2 or 4, wherein the base layer has a thickness of 100 to 200 μm.
9. The flexible solar cell front sheet according to any one of claims 1, 2 or 4, wherein the water blocking layer has a thickness of 30 to 500 nm.
10. The flexible solar cell front sheet according to any one of claims 1, 2 or 4, wherein the thickness ratio of the weatherable layer to the base layer is 1: (2-10).
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| CN105990459A (en) * | 2015-02-28 | 2016-10-05 | 汉能新材料科技有限公司 | Flexible package composite film and manufacturing method thereof |
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| CN103079823A (en) * | 2010-08-23 | 2013-05-01 | 琳得科株式会社 | Transparent protective sheet and solar cell module using same |
| JP2014188910A (en) * | 2013-03-28 | 2014-10-06 | Sumitomo Bakelite Co Ltd | Polycarbonate resin laminate, roof, outdoor signboard, and exterior wall |
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