WO2021128585A1 - Solar cell backplane - Google Patents

Solar cell backplane Download PDF

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Publication number
WO2021128585A1
WO2021128585A1 PCT/CN2020/077575 CN2020077575W WO2021128585A1 WO 2021128585 A1 WO2021128585 A1 WO 2021128585A1 CN 2020077575 W CN2020077575 W CN 2020077575W WO 2021128585 A1 WO2021128585 A1 WO 2021128585A1
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WO
WIPO (PCT)
Prior art keywords
layer
fireproof
adhesive layer
solar cell
adhesive
Prior art date
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PCT/CN2020/077575
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French (fr)
Chinese (zh)
Inventor
刘源
夏修旸
李阜阳
李新军
陈洪野
吴小平
Original Assignee
苏州赛伍应用技术股份有限公司
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Application filed by 苏州赛伍应用技术股份有限公司 filed Critical 苏州赛伍应用技术股份有限公司
Priority to JP2020005203U priority Critical patent/JP3232550U/en
Publication of WO2021128585A1 publication Critical patent/WO2021128585A1/en

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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
    • H01L31/049—Protective back sheets
    • 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

Definitions

  • This application belongs to the technical field of solar energy, for example, it relates to a solar cell backplane.
  • the solar cell backplane is located on the back of the solar cell panel, and protects and supports the cells in the solar cell panel. It has reliable insulation, water resistance, aging resistance, etc., and is widely used in solar cell (photovoltaic) modules.
  • Solar cell backsheets are also called solar cell backsheet films, photovoltaic backsheets, photovoltaic backsheet films, and solar backsheets.
  • CN103456817A discloses a fluorine-free multi-layer co-extruded solar cell back sheet material.
  • the back sheet material is divided into three layers, which are respectively a weathering layer, an intermediate layer and an adhesive layer.
  • the weather-resistant layer is modified polycarbonate (PC); the middle layer is modified polybutylene terephthalate (PBT); and the bonding layer is modified PC.
  • the mixture of each layer is first extruded through a twin-screw extruder, and then co-extruded through a multi-layer co-extrusion device to obtain a backing material.
  • CN109485965A discloses a solar battery backboard base material, a preparation method and a solar battery backboard.
  • the solar cell backplane substrate provided by this solution includes a core material layer, and in parts by weight, the core material layer includes the following components: 60 to 85 parts of polyolefin, 1 to 30 parts of heat-resistant reinforcing resin, 1 to 5 parts of toughening agent, 1 to 5 parts of compatibilizer, 0 to 20 parts of inorganic filler and 0 to 3 parts of auxiliary agent.
  • CN207303123U discloses a high-barrier solar cell back sheet, which comprises a weather-resistant protective layer, a base material layer, and a weather-resistant adhesive layer stacked in sequence, the weather-resistant protective layer, a base material layer, and a weather-resistant adhesive layer The thickness ratio of the three is 0.01-0.20:1:0.01-0.20, and the solar cell back sheet further includes at least one aluminum oxide layer disposed between the substrate layer and the weather-resistant protective layer.
  • CN102501514A discloses a solar battery back sheet and a preparation method thereof.
  • the solar cell back sheet sequentially includes a weathering layer, a structural reinforcement layer and a weathering layer, and the structural reinforcement layer and the weathering layer are bonded and fixed by an adhesive layer.
  • the weather-resistant layer is a fluorine material layer
  • the structural reinforcement layer is a polyimide film
  • the material of the fluorine material layer is selected from polyvinylidene fluoride, vinylidene fluoride-tetrafluoroethylene-hexafluoropropylene copolymer, or In combination, the material of the polyimide film is selected from thermoplastic polyimide, low-temperature curing polyimide, or a combination thereof;
  • the material of the adhesive layer is selected from polyvinyl acetate or polyurethane.
  • CN107230732A provides a method for preparing a solar battery back sheet, which includes the following steps: after graphene fillers and resin chips are uniformly mixed, kneading, extrusion, drum shaping and bidirectional stretching are carried out in sequence to obtain solar cells Backplane; the surface of the solar cell backplane is processed into low-temperature plasma, and the surface of the solar cell backplane is coated with paint; drying and curing are performed to obtain the product.
  • the solar cell back sheet of this aspect includes 1) a substrate layer; and 2) a mixed resin layer formed on at least one surface of the substrate layer, which includes a fluorine-based resin and a (meth)acrylic acid-based copolymer resin.
  • the (meth)acrylic acid-based copolymer resin includes a (meth)acrylic acid-based monomer and a maleimide-based monomer.
  • the amount of the fluorine-based resin is 50 to 99% by weight, and the amount of the (meth)acrylic acid-based copolymer is 1 to 50% by weight, and based on 100% by weight based on (formaldehyde) (Meth)acrylic acid-based copolymer, the amount of the (meth)acrylic acid-based monomer is 70-98wt%, the amount of the maleimide-based monomer is 2-30wt%, the mixed resin layer
  • the maleimide-based monomers are selected from the group consisting of N-cyclohexylmaleimide, N-phenylmaleimide, N-methylmaleimide, N-butylmaleimide At least one of imine, N-benzylmaleimide, and N-pyrenylmaleimide.
  • the present application provides a solar cell back sheet, which includes an adhesive layer, a base layer and a fireproof functional layer stacked in sequence, and the fireproof functional layer includes a fireproof layer.
  • the fireproof functional layer includes at least one fireproof layer and at least one adhesive layer.
  • the fireproof functional layer further includes a weather resistant layer.
  • one of the adhesive layers is located on the base layer, and the at least one adhesive layer and the at least one fireproof layer are alternately laminated.
  • the at least one adhesive layer includes a first adhesive layer and a second adhesive layer
  • the fire-resistant functional layer further includes a weather-resistant layer
  • the fire-resistant functional layer is composed of a first adhesive layer laminated in sequence.
  • An adhesive layer, a fireproof layer, a second adhesive layer and a weather-resistant layer are composed, and the first adhesive layer is located on the base layer.
  • the at least one adhesive layer includes a first adhesive layer and a second adhesive layer
  • the at least one fireproof layer includes a first fireproof layer and a second fireproof layer
  • the fireproof functional layer It is composed of a first adhesive layer, a first fireproof layer, a second adhesive layer and a second fireproof layer that are sequentially stacked, and the first adhesive layer is located on the base layer.
  • the fireproof functional layer further includes an adhesive layer.
  • the thickness of the adhesive layer is 0.003mm-0.04mm, and the thickness of the base layer is 0.05mm-1.1mm.
  • the thickness of each of the fireproof layers is independently 0.05mm-3mm.
  • each adhesive layer is independently 0.003mm-0.025mm.
  • the thickness of the weather resistant layer is 0.005mm-0.05mm.
  • the adhesive layer is a fluorine-containing coating layer
  • the base layer is a polyethylene terephthalate (PET) film layer
  • the first adhesive layer is polyurethane Adhesive layer
  • the material of the fireproof layer is graphite sheet
  • the second adhesive layer is a polyurethane adhesive layer
  • the material of the weather resistant layer is UV-resistant PET.
  • the adhesive layer is a fluorine-containing coating layer
  • the material of the base layer is a PET film layer
  • the first adhesive layer is a polyester adhesive layer
  • the The material is mica paper
  • the second adhesive layer is a polyester adhesive layer
  • the material of the second fireproof layer is aluminum foil.
  • the adhesive layer is a fluorine-containing coating layer
  • the base layer is a PET film layer
  • the adhesive layer is an acrylic adhesive layer
  • the material of the fireproof layer is aluminum foil.
  • FIG. 1 is a schematic diagram of the structure of a solar cell back sheet provided in Embodiment 2;
  • FIG. 2 is a schematic diagram of the structure of the solar cell back sheet provided in Embodiment 3;
  • FIG. 3 is a schematic diagram of the structure of a solar cell back sheet provided in Embodiment 4.
  • This embodiment provides a solar cell back sheet, which includes an adhesive layer, a base layer, and a fireproof functional layer stacked in sequence, and the fireproof functional layer includes a fireproof layer.
  • the adhesive layer is used to improve the weather resistance and bonding performance of the solar cell panel
  • the base layer is used to improve the mechanical performance and barrier performance of the solar cell panel
  • the fireproof functional layer has at least fireproof performance.
  • other weather-resistant layers can be added to make the fire-resistant functional layer not only have fire resistance, but also other weather resistance.
  • the bonding layer may include a fluorine-containing coating layer.
  • the base layer may include a PET film layer.
  • the fireproof functional layer includes at least one fireproof layer and at least one adhesive layer.
  • the fireproof layer is used to improve the fireproof performance of the backboard.
  • the adhesive layer is used to improve the bonding performance of the fireproof layer, the weathering layer and the base layer.
  • the fireproof layer is a metal or inorganic film, including any one or a combination of at least two of aluminum foil, copper foil, mica paper, graphite sheet, or thermally conductive silicone cloth.
  • the adhesive layer includes any one or a combination of at least two of a polyurethane adhesive layer, an acrylic resin adhesive layer, an epoxy resin adhesive layer, or a polyester adhesive layer.
  • the fireproof functional layer further includes a weather resistant layer.
  • the weathering layer is used to improve the weathering performance of the solar cell back sheet.
  • the material of the weather resistant layer includes polyvinylidene fluoride and/or polyvinyl fluoride film.
  • one of the adhesive layers is located on the base layer, and the adhesive layer and the fireproof layer are alternately laminated. That is, there is an adhesive layer on the base layer, a fireproof layer on the adhesive layer, and a second adhesive layer can be provided on the fireproof layer. If there is a second fireproof layer, it will be It is arranged on the second adhesive layer. That is, each fireproof layer is located on the adhesive layer, and the fireproof layer and the adhesive layer are alternately stacked.
  • the fireproof functional layer is composed of a first adhesive layer, a fireproof layer, a second adhesive layer, and a weather resistant layer that are sequentially stacked, and the first adhesive layer is located on the solar cell back sheet. ⁇ On the base layer.
  • the materials used for the first adhesive layer and the second adhesive layer are the same as the aforementioned materials used for the adhesive layer. That is, the materials used for the first adhesive layer and the second adhesive layer independently include any one or at least two of a polyurethane adhesive layer, an acrylic resin adhesive layer, an epoxy resin adhesive layer, or a polyester adhesive layer. combination.
  • the fireproof functional layer of the solar battery backsheet adopts the above-mentioned structure having both a fireproof layer and a weather resistant layer.
  • the advantage is that it not only improves the weather resistance of the solar battery backsheet, but also improves the flame retardant performance of the solar battery backsheet. .
  • the fireproof functional layer is composed of a first adhesive layer, a first fireproof layer, a second adhesive layer, and a second fireproof layer that are sequentially stacked, and the first adhesive layer is located on the On the base layer of the solar cell backplane.
  • the materials used for the first adhesive layer and the second adhesive layer are the same as those used for the aforementioned adhesive layer. That is, the materials used for the first adhesive layer and the second adhesive layer independently include any one or at least two of a polyurethane adhesive layer, an acrylic resin adhesive layer, an epoxy resin adhesive layer, or a polyester adhesive layer. combination.
  • the materials used for the first fireproof layer and the second fireproof layer are in the same range as the materials used for the aforementioned fireproof layer. That is, the materials of the first fireproof layer and the second fireproof layer are independently metal or inorganic films, including any one or a combination of at least two of aluminum foil, copper foil, mica paper, graphite sheet, or thermally conductive silicone cloth.
  • the fireproof functional layer of the solar battery backsheet adopts the above-mentioned structure with two fireproof layers at the same time. Its advantage lies in that it can significantly improve the flame retardancy of the solar battery backsheet while ensuring the weather resistance of the solar battery backsheet. performance.
  • the thickness of the adhesive layer in the solar cell backsheet is 0.003mm-0.04mm, such as 0.003mm, 0.005mm, 0.01mm, 0.015mm, 0.02mm, 0.025mm, 0.03mm, 0.035mm or 0.04mm, etc.
  • the thickness of the base layer is 0.05mm-1.1mm, for example, 0.05mm, 0.08mm, 0.1mm, 0.5mm, 1.0mm or 1.1mm.
  • the thickness of each of the fireproof layers is independently 0.05mm-3mm, such as 0.05mm, 0.1mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm or 3mm.
  • each adhesive layer is independently 0.003mm-0.025mm, such as 0.003mm, 0.005mm, 0.010mm, 0.015mm, 0.020mm, 0.025mm, etc.
  • the thickness of the weather resistant layer is 0.005mm-0.05mm, for example, 0.005mm, 0.01mm, 0.02mm, 0.035mm, 0.04mm, 0.05mm, etc. .
  • the adhesive layer, weather resistant layer, and fireproof layer are mainly formed on the surface of the substrate layer by dipping, vapor deposition, pressing and vapor deposition, that is, they are connected together by these methods.
  • the preparation method is not specifically limited, and those skilled in the art can make adjustments according to actual needs.
  • the solar battery backsheet provided by the present application can effectively improve the fireproof performance of the solar battery backsheet by adding a fireproof functional layer.
  • the solar cell backplane provided in this application is based on the Standard Test Method for Surface Flammability of Materials Using a Radiant Heat Energy Source, ASTM E162, and the radiant heat index IS can be reduced to below 35 .
  • the solar battery back sheet provided by the present application can effectively improve the fireproof performance of the back sheet, improve the safety of the solar battery, and reduce fire hazards.
  • This embodiment provides a solar cell back sheet.
  • the structure of the solar cell back sheet is shown in FIG. 1, and includes an adhesive layer 1, a base layer 2, a first adhesive layer 301, and a fireproof layer 4 stacked in sequence.
  • the material of the adhesive layer 1 is a fluorine-containing coating layer (fluorocarbon coating) with a thickness of 0.005 mm;
  • the material of the base layer 2 is a PET film layer with a thickness of 0.075 mm;
  • the first adhesive layer 301 is a polyurethane adhesive layer with a thickness of 0.013mm;
  • the material of the fireproof layer 4 is graphite sheet with a thickness of 3mm;
  • the second adhesive layer 302 is a polyurethane adhesive layer with a thickness of 0.013mm;
  • the weather resistant layer 5 The material is UV-resistant PET with a thickness of 0.05mm.
  • This embodiment provides a solar cell back sheet.
  • the structure of the solar cell back sheet is shown in FIG. 2 and includes an adhesive layer 1, a base layer 2, a first adhesive layer 301, and a first fireproof layer stacked in sequence. 401, a second adhesive layer 302 and a second fireproof layer 402.
  • the material of the adhesive layer 1 is a fluorine-containing coating layer (fluorocarbon coating) with a thickness of 0.008 mm;
  • the material of the base layer 2 is a PET film layer with a thickness of 0.125 mm;
  • the first adhesive layer 301 is a polyester adhesive layer with a thickness of 0.01 mm;
  • the material of the first fireproof layer 401 is mica paper with a thickness of 0.25 mm;
  • the material of the second adhesive layer 302 is a polyester adhesive layer , The thickness is 0.01mm;
  • the material of the second fireproof layer 402 is aluminum foil, and the thickness is 0.05mm.
  • This embodiment provides a solar cell back sheet.
  • the structure of the solar cell back sheet is shown in FIG. 3, and includes an adhesive layer 1, a base layer 2, an adhesive layer 3 and a fireproof layer 4 stacked in sequence.
  • the material of the adhesive layer 1 is a fluorine-containing coating layer (fluorocarbon coating) with a thickness of 0.01 mm;
  • the material of the base layer 2 is a PET film layer with a thickness of 0.125 mm;
  • the adhesive layer 3 is an acrylic adhesive layer with a thickness of 0.008 mm;
  • the material of the fireproof layer 4 is aluminum foil with a thickness of 0.05 mm.
  • the solar cell back sheet provided by this comparative example is the same as the solar cell back sheet provided in Example 4 except that it does not have the fireproof layer 4.
  • the radiant heat index IS test was performed on the solar cell backsheets provided in the foregoing Examples 2 to 4 and Comparative Example 1 in accordance with ASTM E162, and the test results are shown in Table 1 below.
  • the solar battery back sheet provided by the present application can effectively improve the fireproof performance of the solar battery back sheet by adding a fireproof layer.
  • the comparative example does not have a fireproof layer, so its performance is not as good as that of the embodiment in terms of radiant heat index.

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  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
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  • Photovoltaic Devices (AREA)
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Abstract

A solar cell backplane, comprising a bonding layer (1), a substrate layer (2) and a fireproof functional layer that are sequentially stacked, wherein the fireproof functional layer comprises a fireproof layer (4). By means of the solar cell backplane, the fireproof performance of the backplane can be effectively improved, thereby improving the safety of a solar cell and reducing potential fire hazards.

Description

太阳能电池背板Solar battery backplane
本申请要求在2019年12月27日提交中国专利局、申请号为201922407202.9的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with application number 201922407202.9 on December 27, 2019. The entire content of this application is incorporated into this application by reference.
技术领域Technical field
本申请属于太阳能技术领域，例如涉及一种太阳能电池背板。This application belongs to the technical field of solar energy, for example, it relates to a solar cell backplane.
背景技术Background technique
太阳能电池背板位于太阳能电池板的背面，对太阳能电池板中的电池片起保护和支撑作用，具有可靠的绝缘性、阻水性、耐老化性等，且广泛应用于太阳能电池(光伏)组件。太阳能电池背板也称为太阳能电池背板膜、光伏背板、光伏背板膜、太阳能背板。The solar cell backplane is located on the back of the solar cell panel, and protects and supports the cells in the solar cell panel. It has reliable insulation, water resistance, aging resistance, etc., and is widely used in solar cell (photovoltaic) modules. Solar cell backsheets are also called solar cell backsheet films, photovoltaic backsheets, photovoltaic backsheet films, and solar backsheets.
随着太阳能发电的推广，越来越多因太阳能电池组件故障而导致的火灾事故发生，太阳能电池组件本身的防火性能不容忽视。并且随着分布式光伏的普及，建筑屋顶用太阳能电池组件的防火性能要求较高，从而对太阳能电池背板的防火性能的要求也较高，然而相关技术中的太阳能电池背板大多采用的高分子多层复合材料不具备防火性能。With the promotion of solar power generation, more and more fire accidents occur due to the failure of solar cell modules, and the fireproof performance of solar cell modules cannot be ignored. And with the popularization of distributed photovoltaics, solar cell modules for building roofs have higher requirements for fire resistance, and therefore require higher fire performance of solar cell backplanes. However, most of the solar cell backplanes in related technologies use high Molecular multilayer composites do not have fire resistance.
CN103456817A公开了一种无氟多层共挤太阳能电池背板材料，背板材料分为3层，分别为耐候层、中间层、粘结层。耐候层为改性的聚碳酸酯(Polycarbonate，PC)；中间层为改性的聚对苯二甲酸丁二醇酯(polybutylene terephthalate，PBT)；粘结层为改性的PC。各层的混料，先通过双螺杆挤出机挤出，再经过多层共挤装置进行共挤出，得到背板材料。CN103456817A discloses a fluorine-free multi-layer co-extruded solar cell back sheet material. The back sheet material is divided into three layers, which are respectively a weathering layer, an intermediate layer and an adhesive layer. The weather-resistant layer is modified polycarbonate (PC); the middle layer is modified polybutylene terephthalate (PBT); and the bonding layer is modified PC. The mixture of each layer is first extruded through a twin-screw extruder, and then co-extruded through a multi-layer co-extrusion device to obtain a backing material.
CN109485965A公开了一种太阳能电池背板基材与制备方法及太阳能电池背板。该方案提供的太阳能电池背板基材，包含芯材层，按重量份计，所述芯材层包含以下组分：60～85份的聚烯烃、1～30份的耐热补强树脂、1～5份的增韧剂、1～5份的相容剂、0～20份的无机填料和0～3份的助剂。CN109485965A discloses a solar battery backboard base material, a preparation method and a solar battery backboard. The solar cell backplane substrate provided by this solution includes a core material layer, and in parts by weight, the core material layer includes the following components: 60 to 85 parts of polyolefin, 1 to 30 parts of heat-resistant reinforcing resin, 1 to 5 parts of toughening agent, 1 to 5 parts of compatibilizer, 0 to 20 parts of inorganic filler and 0 to 3 parts of auxiliary agent.
CN207303123U公开了一种高阻隔太阳能电池背板，所述太阳能电池背板包括依次层叠设置的耐候保护层、基材层、耐候粘结层，所述耐候保护层、基材层、耐候粘结层三者的厚度之比为0.01～0.20:1:0.01～0.20，所述太阳能电池背板还包括设置在所述基材层和所述耐候保护层之间的至少一层氧化铝层。CN207303123U discloses a high-barrier solar cell back sheet, which comprises a weather-resistant protective layer, a base material layer, and a weather-resistant adhesive layer stacked in sequence, the weather-resistant protective layer, a base material layer, and a weather-resistant adhesive layer The thickness ratio of the three is 0.01-0.20:1:0.01-0.20, and the solar cell back sheet further includes at least one aluminum oxide layer disposed between the substrate layer and the weather-resistant protective layer.
CN102501514A公开了一种太阳能电池背板及其制备方法。该太阳能电池背板依次包括耐候层、结构增强层和耐候层，所述结构增强层和耐候层之间通过粘结层粘结固定。所述耐候层为氟材料层，所述结构增强层为聚酰亚胺薄膜；所述氟材料层的材料选自聚偏氟乙烯、偏氟乙烯-四氟乙烯-六氟丙烯共聚物、或其组合，所述聚酰亚胺薄膜的材料选自热塑性聚酰亚胺、低温固化聚酰亚胺、或其组合；所述粘结层材料选自聚醋酸乙烯酯或聚氨酯。CN102501514A discloses a solar battery back sheet and a preparation method thereof. The solar cell back sheet sequentially includes a weathering layer, a structural reinforcement layer and a weathering layer, and the structural reinforcement layer and the weathering layer are bonded and fixed by an adhesive layer. The weather-resistant layer is a fluorine material layer, and the structural reinforcement layer is a polyimide film; the material of the fluorine material layer is selected from polyvinylidene fluoride, vinylidene fluoride-tetrafluoroethylene-hexafluoropropylene copolymer, or In combination, the material of the polyimide film is selected from thermoplastic polyimide, low-temperature curing polyimide, or a combination thereof; the material of the adhesive layer is selected from polyvinyl acetate or polyurethane.
CN107230732A提供了一种太阳能电池背板的制备方法，该方法包括如下步骤：将石墨烯类填料和树脂切片混合均匀后，依次进行混炼、挤出、转鼓定型和双向拉伸，得到太阳能电池背板；将所述太阳能电池背板的表面处理出低温等离子体，利用涂料对太阳能电池背板的表面进行涂覆；进行烘干固化，得到产品。CN107230732A provides a method for preparing a solar battery back sheet, which includes the following steps: after graphene fillers and resin chips are uniformly mixed, kneading, extrusion, drum shaping and bidirectional stretching are carried out in sequence to obtain solar cells Backplane; the surface of the solar cell backplane is processed into low-temperature plasma, and the surface of the solar cell backplane is coated with paint; drying and curing are performed to obtain the product.
CN102301492A公开了太阳能电池背板及制备该太阳能电池背板的方法。该方案的太阳能电池背板包括1)基板层；和2)在所述基板层的至少一个表面上形成的混合树脂层，其包含基于氟的树脂和基于(甲基)丙烯酸的共聚物树脂。所述基于(甲基)丙烯酸的共聚物树脂包含基于(甲基)丙烯酸的单体和基于马来酰亚胺的单体。基于100wt％的混合树脂层，所述基于氟的树脂的量为50至99wt％，以及所述基于(甲基)丙烯酸的共聚物的量为1为50wt％，以及基于100wt％的基于(甲基)丙烯酸的共聚物，所述基于(甲基)丙烯酸的单体的量为70～98wt％，所述基于马来酰亚胺的单体的量为2～30wt％，所述混合树脂层的基于马来酰亚胺的单体包含选自N-环己基马来酰亚胺、N-苯基马来酰亚胺、N-甲基马来酰亚胺、N-丁基马来酰亚胺、N-苄基马来酰亚胺和N-芘基马来酰亚胺中的至少一种。CN102301492A discloses a solar battery back sheet and a method for preparing the solar battery back sheet. The solar cell back sheet of this aspect includes 1) a substrate layer; and 2) a mixed resin layer formed on at least one surface of the substrate layer, which includes a fluorine-based resin and a (meth)acrylic acid-based copolymer resin. The (meth)acrylic acid-based copolymer resin includes a (meth)acrylic acid-based monomer and a maleimide-based monomer. Based on 100% by weight of the mixed resin layer, the amount of the fluorine-based resin is 50 to 99% by weight, and the amount of the (meth)acrylic acid-based copolymer is 1 to 50% by weight, and based on 100% by weight based on (formaldehyde) (Meth)acrylic acid-based copolymer, the amount of the (meth)acrylic acid-based monomer is 70-98wt%, the amount of the maleimide-based monomer is 2-30wt%, the mixed resin layer The maleimide-based monomers are selected from the group consisting of N-cyclohexylmaleimide, N-phenylmaleimide, N-methylmaleimide, N-butylmaleimide At least one of imine, N-benzylmaleimide, and N-pyrenylmaleimide.
但是上述方案均无法使得太阳能电池背板具有防火功能。However, none of the above solutions can make the solar battery backsheet have a fireproof function.
发明内容Summary of the invention
本申请提供一种太阳能电池背板，所述太阳能电池背板包括依次层叠的粘结层、基体层以及防火功能层，所述防火功能层中包括防火层。The present application provides a solar cell back sheet, which includes an adhesive layer, a base layer and a fireproof functional layer stacked in sequence, and the fireproof functional layer includes a fireproof layer.
一实施例中，所述防火功能层包括至少一个防火层和至少一个胶黏剂层。In an embodiment, the fireproof functional layer includes at least one fireproof layer and at least one adhesive layer.
一实施例中，所述防火功能层还包括耐候层。In an embodiment, the fireproof functional layer further includes a weather resistant layer.
一实施例中，所述防火功能层中，一个所述胶黏剂层位于所述基体层上，且所述至少一个胶黏剂层和所述至少一个防火层交替层叠。In one embodiment, in the fireproof functional layer, one of the adhesive layers is located on the base layer, and the at least one adhesive layer and the at least one fireproof layer are alternately laminated.
一实施例中，所述至少一个胶黏剂层包括第一胶黏剂层和第二胶黏剂层， 所述防火功能层还包括耐候层，所述防火功能层由依次层叠的第一胶黏剂层、防火层、第二胶黏剂层以及耐候层组成，所述第一胶黏剂层位于所述基体层上。In an embodiment, the at least one adhesive layer includes a first adhesive layer and a second adhesive layer, the fire-resistant functional layer further includes a weather-resistant layer, and the fire-resistant functional layer is composed of a first adhesive layer laminated in sequence. An adhesive layer, a fireproof layer, a second adhesive layer and a weather-resistant layer are composed, and the first adhesive layer is located on the base layer.
一实施例中，所述至少一个胶黏剂层包括第一胶黏剂层和第二胶黏剂层，所述至少一个防火层包括第一防火层和第二防火层，所述防火功能层由依次层叠的第一胶黏剂层、第一防火层、第二胶黏剂层以及第二防火层组成，所述第一胶黏剂层位于所述基体层上。In an embodiment, the at least one adhesive layer includes a first adhesive layer and a second adhesive layer, the at least one fireproof layer includes a first fireproof layer and a second fireproof layer, and the fireproof functional layer It is composed of a first adhesive layer, a first fireproof layer, a second adhesive layer and a second fireproof layer that are sequentially stacked, and the first adhesive layer is located on the base layer.
一实施例中，所述防火功能层还包括胶黏剂层。In an embodiment, the fireproof functional layer further includes an adhesive layer.
一实施例中，粘结层的厚度为0.003mm-0.04mm，基体层的厚度为0.05mm-1.1mm。In one embodiment, the thickness of the adhesive layer is 0.003mm-0.04mm, and the thickness of the base layer is 0.05mm-1.1mm.
一实施例中，每个所述防火层的厚度独立地为0.05mm-3mm。In an embodiment, the thickness of each of the fireproof layers is independently 0.05mm-3mm.
一实施例中，每个所述胶黏剂层的厚度独立地为0.003mm-0.025mm。In an embodiment, the thickness of each adhesive layer is independently 0.003mm-0.025mm.
一实施例中，所述耐候层的厚度为0.005mm-0.05mm。In one embodiment, the thickness of the weather resistant layer is 0.005mm-0.05mm.
一实施例中，所述粘结层为含氟涂覆层，所述基体层为聚对苯二甲酸乙二醇酯(Polyethylene terephthalate，PET)薄膜层，所述第一胶黏剂层为聚氨酯胶粘剂层，所述防火层的材料为石墨片，所述第二胶黏剂层为聚氨酯胶粘剂层，所述耐候层的材料为耐紫外PET。In one embodiment, the adhesive layer is a fluorine-containing coating layer, the base layer is a polyethylene terephthalate (PET) film layer, and the first adhesive layer is polyurethane Adhesive layer, the material of the fireproof layer is graphite sheet, the second adhesive layer is a polyurethane adhesive layer, and the material of the weather resistant layer is UV-resistant PET.
一实施例中，所述粘结层为含氟涂覆层，所述基体层的材料为PET薄膜层，所述第一胶黏剂层为聚酯型胶粘剂层，所述第一防火层的材料为云母纸，所述第二胶黏剂层为聚酯型胶粘剂层，所述第二防火层的材料为铝箔。In one embodiment, the adhesive layer is a fluorine-containing coating layer, the material of the base layer is a PET film layer, the first adhesive layer is a polyester adhesive layer, and the The material is mica paper, the second adhesive layer is a polyester adhesive layer, and the material of the second fireproof layer is aluminum foil.
一实施例中，所述粘结层为含氟涂覆层，所述基体层为PET薄膜层，所述胶黏剂层为丙烯酸胶粘剂层，所述防火层的材料为铝箔。In one embodiment, the adhesive layer is a fluorine-containing coating layer, the base layer is a PET film layer, the adhesive layer is an acrylic adhesive layer, and the material of the fireproof layer is aluminum foil.
附图说明Description of the drawings
图1为实施例2提供的太阳能电池背板的结构示意图；FIG. 1 is a schematic diagram of the structure of a solar cell back sheet provided in Embodiment 2;
图2为实施例3提供的太阳能电池背板的结构示意图；2 is a schematic diagram of the structure of the solar cell back sheet provided in Embodiment 3;
图3为实施例4提供的太阳能电池背板的结构示意图；3 is a schematic diagram of the structure of a solar cell back sheet provided in Embodiment 4;
其中，1-粘结层、2-基体层、3-胶黏剂层、301-第一胶黏剂层、302-第二胶黏剂层、4-防火层、401-第一防火层、402-第二防火层、5-耐候层。Among them, 1-adhesive layer, 2-base layer, 3-adhesive layer, 301-first adhesive layer, 302-second adhesive layer, 4-fireproof layer, 401-first fireproof layer, 402-Second fireproof layer, 5-weatherproof layer.
具体实施方式Detailed ways
为更好地说明本申请，便于理解本申请的技术方案，下面对申请进一步详 细说明。In order to better explain the application and facilitate the understanding of the technical solutions of the application, the application will be described in further detail below.
实施例1Example 1
本实施例提供一种太阳能电池背板，所述太阳能电池背板包括依次层叠的粘结层、基体层以及防火功能层，所述防火功能层中包括防火层。This embodiment provides a solar cell back sheet, which includes an adhesive layer, a base layer, and a fireproof functional layer stacked in sequence, and the fireproof functional layer includes a fireproof layer.
本实施例的太阳能电池背板中，粘结层用于提高太阳能电池板的耐候性能和粘结性能，基体层用于提高太阳能电池板的机械性能和阻隔性能，防火功能层至少具有防火性能，并且可以加入其它耐候层使得防火功能层除了具有防火性外，还具有其它耐候性。粘结层可以包括含氟涂覆层。基体层可以包括PET薄膜层。In the solar cell backsheet of this embodiment, the adhesive layer is used to improve the weather resistance and bonding performance of the solar cell panel, the base layer is used to improve the mechanical performance and barrier performance of the solar cell panel, and the fireproof functional layer has at least fireproof performance. And other weather-resistant layers can be added to make the fire-resistant functional layer not only have fire resistance, but also other weather resistance. The bonding layer may include a fluorine-containing coating layer. The base layer may include a PET film layer.
一实施例中，所述防火功能层包括至少一个防火层和至少一个胶黏剂层。防火层用于提高背板的防火性能。胶黏剂层用于提高防火层、耐候层与基体层的粘结性能。防火层为金属或无机薄膜，包括铝箔、铜箔、云母纸、石墨片或导热矽胶布中的任意一种或至少两种的组合。胶黏剂层包括聚氨酯胶粘剂层、丙烯酸树脂胶粘剂层、环氧树脂胶粘剂层或聚酯胶粘剂层中的任意一种或至少两种的组合。In an embodiment, the fireproof functional layer includes at least one fireproof layer and at least one adhesive layer. The fireproof layer is used to improve the fireproof performance of the backboard. The adhesive layer is used to improve the bonding performance of the fireproof layer, the weathering layer and the base layer. The fireproof layer is a metal or inorganic film, including any one or a combination of at least two of aluminum foil, copper foil, mica paper, graphite sheet, or thermally conductive silicone cloth. The adhesive layer includes any one or a combination of at least two of a polyurethane adhesive layer, an acrylic resin adhesive layer, an epoxy resin adhesive layer, or a polyester adhesive layer.
一实施例中，所述防火功能层还包括耐候层。耐候层用于提高太阳能电池背板的耐候性能。耐候层的材料包括聚偏氟乙烯和/或聚氟乙烯薄膜。In an embodiment, the fireproof functional layer further includes a weather resistant layer. The weathering layer is used to improve the weathering performance of the solar cell back sheet. The material of the weather resistant layer includes polyvinylidene fluoride and/or polyvinyl fluoride film.
一实施例中，所述防火功能层中，一个所述胶黏剂层位于基体层上，且所述胶黏剂层和所述防火层交替层叠。即，有一个胶黏剂层位于基体层上，一个防火层位于该胶黏剂层上，该防火层上还可以再设一个第二胶黏剂层，如果存在第二防火层的话，就将其设置在第二胶黏剂层上。即每个防火层均位于胶黏剂层上，防火层和胶黏层形成交替层叠。In one embodiment, in the fireproof functional layer, one of the adhesive layers is located on the base layer, and the adhesive layer and the fireproof layer are alternately laminated. That is, there is an adhesive layer on the base layer, a fireproof layer on the adhesive layer, and a second adhesive layer can be provided on the fireproof layer. If there is a second fireproof layer, it will be It is arranged on the second adhesive layer. That is, each fireproof layer is located on the adhesive layer, and the fireproof layer and the adhesive layer are alternately stacked.
一实施例中，所述防火功能层由依次层叠的第一胶黏剂层、防火层、第二胶黏剂层以及耐候层组成，所述第一胶黏剂层位于所述太阳能电池背板的基体层上。In one embodiment, the fireproof functional layer is composed of a first adhesive layer, a fireproof layer, a second adhesive layer, and a weather resistant layer that are sequentially stacked, and the first adhesive layer is located on the solar cell back sheet.的基体层。 On the base layer.
上述防火功能层结构中，第一胶黏剂层和第二胶黏剂层使用的材料与前述对胶黏剂层使用的材料范围是相同的。即，第一胶黏剂层和第二胶黏剂层使用的材料独立地包括聚氨酯胶粘剂层、丙烯酸树脂胶粘剂层、环氧树脂胶粘剂层或聚酯胶粘剂层中的任意一种或至少两种的组合。In the above-mentioned fireproof functional layer structure, the materials used for the first adhesive layer and the second adhesive layer are the same as the aforementioned materials used for the adhesive layer. That is, the materials used for the first adhesive layer and the second adhesive layer independently include any one or at least two of a polyurethane adhesive layer, an acrylic resin adhesive layer, an epoxy resin adhesive layer, or a polyester adhesive layer. combination.
本实施例中，太阳能电池背板的防火功能层采用上述同时具有防火层和耐候层的结构，其优势在于既提高了太阳能电池背板的耐候性能，也提高了太阳 能电池背板的阻燃性能。In this embodiment, the fireproof functional layer of the solar battery backsheet adopts the above-mentioned structure having both a fireproof layer and a weather resistant layer. The advantage is that it not only improves the weather resistance of the solar battery backsheet, but also improves the flame retardant performance of the solar battery backsheet. .
一实施例中，所述防火功能层由依次层叠的第一胶黏剂层、第一防火层、第二胶黏剂层以及第二防火层组成，所述第一胶黏剂层位于所述太阳能电池背板的基体层上。In an embodiment, the fireproof functional layer is composed of a first adhesive layer, a first fireproof layer, a second adhesive layer, and a second fireproof layer that are sequentially stacked, and the first adhesive layer is located on the On the base layer of the solar cell backplane.
上述防火功能层结构中，第一胶黏剂层和第二胶黏剂层使用的材料与前述胶黏剂层使用的材料范围是相同的。即，第一胶黏剂层和第二胶黏剂层使用的材料独立地包括聚氨酯胶粘剂层、丙烯酸树脂胶粘剂层、环氧树脂胶粘剂层或聚酯胶粘剂层中的任意一种或至少两种的组合。In the above-mentioned fireproof functional layer structure, the materials used for the first adhesive layer and the second adhesive layer are the same as those used for the aforementioned adhesive layer. That is, the materials used for the first adhesive layer and the second adhesive layer independently include any one or at least two of a polyurethane adhesive layer, an acrylic resin adhesive layer, an epoxy resin adhesive layer, or a polyester adhesive layer. combination.
上述防火功能层结构中，第一防火层和第二防火层使用的材料与前述防火层使用的材料的范围是相同的。即，第一防火层和第二防火层使得的材料独立地为金属或无机薄膜，包括铝箔、铜箔、云母纸、石墨片或导热矽胶布中的任意一种或至少两种的组合。In the above-mentioned fireproof functional layer structure, the materials used for the first fireproof layer and the second fireproof layer are in the same range as the materials used for the aforementioned fireproof layer. That is, the materials of the first fireproof layer and the second fireproof layer are independently metal or inorganic films, including any one or a combination of at least two of aluminum foil, copper foil, mica paper, graphite sheet, or thermally conductive silicone cloth.
本实施例中，太阳能电池背板的防火功能层采用上述同时具有两层防火层的结构，其优势在于在保证太阳能电池背板耐候性的前提下，能显著提高了太阳能电池背板的阻燃性能。In this embodiment, the fireproof functional layer of the solar battery backsheet adopts the above-mentioned structure with two fireproof layers at the same time. Its advantage lies in that it can significantly improve the flame retardancy of the solar battery backsheet while ensuring the weather resistance of the solar battery backsheet. performance.
一实施例中，所述太阳能电池背板中，粘结层的厚度为0.003mm-0.04mm，例如0.003mm、0.005mm、0.01mm、0.015mm、0.02mm、0.025mm、0.03mm、0.035mm或0.04mm等，基体层的厚度为0.05mm-1.1mm，例如0.05mm、0.08mm、0.1mm、0.5mm、1.0mm或1.1mm等。In one embodiment, the thickness of the adhesive layer in the solar cell backsheet is 0.003mm-0.04mm, such as 0.003mm, 0.005mm, 0.01mm, 0.015mm, 0.02mm, 0.025mm, 0.03mm, 0.035mm or 0.04mm, etc., the thickness of the base layer is 0.05mm-1.1mm, for example, 0.05mm, 0.08mm, 0.1mm, 0.5mm, 1.0mm or 1.1mm.
一实施例中，每个所述防火层的厚度独立地为0.05mm-3mm，例如0.05mm、0.1mm、0.5mm、1mm、1.5mm、2mm、2.5mm或3mm等。In an embodiment, the thickness of each of the fireproof layers is independently 0.05mm-3mm, such as 0.05mm, 0.1mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm or 3mm.
一实施例中，每个所述胶黏剂层的厚度独立地为0.003mm-0.025mm，例如0.003mm、0.005mm、0.010mm、0.015mm、0.020mm、0.025mm等。In an embodiment, the thickness of each adhesive layer is independently 0.003mm-0.025mm, such as 0.003mm, 0.005mm, 0.010mm, 0.015mm, 0.020mm, 0.025mm, etc.
一实施例中，所述耐候层的厚度为0.005mm-0.05mm，例如0.005mm、0.01mm、0.02mm、0.035mm、0.04mm、0.05mm等。。In one embodiment, the thickness of the weather resistant layer is 0.005mm-0.05mm, for example, 0.005mm, 0.01mm, 0.02mm, 0.035mm, 0.04mm, 0.05mm, etc. .
本申请中粘结层、耐候层、防火层主要通过浸涂、蒸镀、压合以及蒸镀的方式在基体层表面依次形成的，即也是通过这些方式连接在一起的，本申请中对具体的制备方法不做具体限定，本领域技术人员可根据实际需要进行调整。In this application, the adhesive layer, weather resistant layer, and fireproof layer are mainly formed on the surface of the substrate layer by dipping, vapor deposition, pressing and vapor deposition, that is, they are connected together by these methods. The preparation method is not specifically limited, and those skilled in the art can make adjustments according to actual needs.
本申请提供的太阳能电池背板通过添加防火功能层，可以有效提高太阳能电池背板的防火性能。本申请提供的太阳能电池背板按照用辐射热能源测定材料表面火焰燃烧性能测试方法(Standard Test Method for Surface Flammability of  Materials Using a Radiant Heat Energy Source，ASTM E162)，辐射热量指数IS可以降到35以下。本申请提供的太阳能电池背板能有效提高背板的防火性能，提高太阳能电池的安全性，减少火灾隐患。The solar battery backsheet provided by the present application can effectively improve the fireproof performance of the solar battery backsheet by adding a fireproof functional layer. The solar cell backplane provided in this application is based on the Standard Test Method for Surface Flammability of Materials Using a Radiant Heat Energy Source, ASTM E162, and the radiant heat index IS can be reduced to below 35 . The solar battery back sheet provided by the present application can effectively improve the fireproof performance of the back sheet, improve the safety of the solar battery, and reduce fire hazards.
实施例2Example 2
本实施例提供一种太阳能电池背板，所述太阳能电池背板的结构如图1所示，包括依次层叠的粘结层1，基体层2，第一胶黏剂层301，防火层4，第二胶黏剂层302和耐候层5。This embodiment provides a solar cell back sheet. The structure of the solar cell back sheet is shown in FIG. 1, and includes an adhesive layer 1, a base layer 2, a first adhesive layer 301, and a fireproof layer 4 stacked in sequence. The second adhesive layer 302 and the weather resistant layer 5.
本实施例提供的太阳能电池背板中，粘结层1的材料为含氟涂覆层(氟碳涂层)，厚度为0.005mm；基体层2的材料为PET薄膜层，厚度为0.075mm；第一胶黏剂层301为聚氨酯胶粘剂层，厚度为0.013mm；防火层4的材料为石墨片，厚度为3mm；第二胶黏剂层302为聚氨酯胶粘剂层，厚度为0.013mm；耐候层5的材料为耐紫外PET，厚度为0.05mm。In the solar cell back sheet provided in this embodiment, the material of the adhesive layer 1 is a fluorine-containing coating layer (fluorocarbon coating) with a thickness of 0.005 mm; the material of the base layer 2 is a PET film layer with a thickness of 0.075 mm; The first adhesive layer 301 is a polyurethane adhesive layer with a thickness of 0.013mm; the material of the fireproof layer 4 is graphite sheet with a thickness of 3mm; the second adhesive layer 302 is a polyurethane adhesive layer with a thickness of 0.013mm; the weather resistant layer 5 The material is UV-resistant PET with a thickness of 0.05mm.
本实施例提供的太阳能电池背板的防火性能测试结果见表1。The test results of the fireproof performance of the solar battery backsheet provided in this embodiment are shown in Table 1.
实施例3Example 3
本实施例提供一种太阳能电池背板，所述太阳能电池背板的结构如图2所示，包括依次层叠的粘结层1，基体层2，第一胶黏剂层301，第一防火层401，第二胶黏剂层302和第二防火层402。This embodiment provides a solar cell back sheet. The structure of the solar cell back sheet is shown in FIG. 2 and includes an adhesive layer 1, a base layer 2, a first adhesive layer 301, and a first fireproof layer stacked in sequence. 401, a second adhesive layer 302 and a second fireproof layer 402.
本实施例提供的太阳能电池背板中，粘结层1的材料为含氟涂覆层(氟碳涂层)，厚度为0.008mm；基体层2的材料为PET薄膜层，厚度为0.125mm；第一胶黏剂层301为聚酯型胶粘剂层，厚度为0.01mm；第一防火层401的材料为云母纸，厚度为0.25mm；第二胶黏剂层302的材料为聚酯型胶粘剂层，厚度为0.01mm；第二防火层402的材料为铝箔，厚度为0.05mm。In the solar cell back sheet provided in this embodiment, the material of the adhesive layer 1 is a fluorine-containing coating layer (fluorocarbon coating) with a thickness of 0.008 mm; the material of the base layer 2 is a PET film layer with a thickness of 0.125 mm; The first adhesive layer 301 is a polyester adhesive layer with a thickness of 0.01 mm; the material of the first fireproof layer 401 is mica paper with a thickness of 0.25 mm; the material of the second adhesive layer 302 is a polyester adhesive layer , The thickness is 0.01mm; the material of the second fireproof layer 402 is aluminum foil, and the thickness is 0.05mm.
本实施例提供的太阳能电池背板的防火性能测试结果见表1。The test results of the fireproof performance of the solar battery backsheet provided in this embodiment are shown in Table 1.
实施例4Example 4
本实施例提供一种太阳能电池背板，所述太阳能电池背板的结构如图3所示，包括依次层叠的粘结层1，基体层2，胶黏剂层3和防火层4。This embodiment provides a solar cell back sheet. The structure of the solar cell back sheet is shown in FIG. 3, and includes an adhesive layer 1, a base layer 2, an adhesive layer 3 and a fireproof layer 4 stacked in sequence.
本实施例提供的太阳能电池背板中，粘结层1的材料为含氟涂覆层(氟碳涂层)，厚度为0.01mm；基体层2的材料为PET薄膜层，厚度为0.125mm；胶 黏剂层3为丙烯酸胶粘剂层，厚度为0.008mm；防火层4的材料为铝箔，厚度为0.05mm。In the solar cell back sheet provided in this embodiment, the material of the adhesive layer 1 is a fluorine-containing coating layer (fluorocarbon coating) with a thickness of 0.01 mm; the material of the base layer 2 is a PET film layer with a thickness of 0.125 mm; The adhesive layer 3 is an acrylic adhesive layer with a thickness of 0.008 mm; the material of the fireproof layer 4 is aluminum foil with a thickness of 0.05 mm.
本实施例提供的太阳能电池背板的防火性能测试结果见表1。The test results of the fireproof performance of the solar battery backsheet provided in this embodiment are shown in Table 1.
对比例1Comparative example 1
本对比例提供的太阳能电池背板除了不具有防火层4之外，其他方面与实施例4提供的太阳能电池背板相同。The solar cell back sheet provided by this comparative example is the same as the solar cell back sheet provided in Example 4 except that it does not have the fireproof layer 4.
本对比例提供的太阳能电池背板的防火性能测试结果见表1。The fire performance test results of the solar battery back sheet provided by this comparative example are shown in Table 1.
测试方法testing method
对上述多个实施例2至4和对比例1提供的太阳能电池背板按照ASTM E162进行辐射热量指数IS测试，测试结果见下表1。The radiant heat index IS test was performed on the solar cell backsheets provided in the foregoing Examples 2 to 4 and Comparative Example 1 in accordance with ASTM E162, and the test results are shown in Table 1 below.
表1Table 1
辐射热量指数ISRadiant Heat Index IS
实施例2Example 2 3535
实施例3Example 3 5050
实施例4Example 4 6565
对比例1Comparative example 1 130130
综合上述实施例2至4和对比例1可知，本申请提供的太阳能电池背板通过添加防火层，可以有效提高太阳能电池背板的防火性能。对比例没有防火层，因此在辐射热量指数上不及实施例的产品性能好。Based on the foregoing Examples 2 to 4 and Comparative Example 1, it can be seen that the solar battery back sheet provided by the present application can effectively improve the fireproof performance of the solar battery back sheet by adding a fireproof layer. The comparative example does not have a fireproof layer, so its performance is not as good as that of the embodiment in terms of radiant heat index.

Claims (14)

  1. 一种太阳能电池背板，包括依次层叠的粘结层、基体层以及防火功能层，其中，所述防火功能层包括防火层。A solar battery backboard includes an adhesive layer, a base layer and a fireproof functional layer laminated in sequence, wherein the fireproof functional layer includes a fireproof layer.
  2. 根据权利要求1所述的太阳能电池背板，其中，所述防火功能层包括至少一个防火层和至少一个胶黏剂层。The solar cell back sheet according to claim 1, wherein the fireproof functional layer comprises at least one fireproof layer and at least one adhesive layer.
  3. 根据权利要求1所述的太阳能电池背板，其中，所述防火功能层还包括耐候层。The solar cell back sheet according to claim 1, wherein the fireproof functional layer further comprises a weather resistant layer.
  4. 根据权利要求2所述的太阳能电池背板，其中，所述防火功能层中，一个所述胶黏剂层位于所述基体层上，且所述至少一个胶黏剂层和所述至少一个防火层交替层叠。The solar cell back sheet according to claim 2, wherein, in the fireproof functional layer, one of the adhesive layers is located on the base layer, and the at least one adhesive layer and the at least one fireproof layer The layers are stacked alternately.
  5. 根据权利要求2所述的太阳能电池背板，其中，所述至少一个胶黏剂层包括第一胶黏剂层和第二胶黏剂层，所述防火功能层还包括耐候层，所述防火功能层由依次层叠的所述第一胶黏剂层、所述防火层、所述第二胶黏剂层以及所述耐候层组成，所述第一胶黏剂层位于所述基体层上。The solar cell back sheet according to claim 2, wherein the at least one adhesive layer includes a first adhesive layer and a second adhesive layer, the fire-resistant functional layer further includes a weather-resistant layer, and the fire-resistant The functional layer is composed of the first adhesive layer, the fireproof layer, the second adhesive layer, and the weather resistant layer that are sequentially stacked, and the first adhesive layer is located on the base layer.
  6. 根据权利要求2所述的太阳能电池背板，其中，所述至少一个胶黏剂层包括第一胶黏剂层和第二胶黏剂层，所述至少一个防火层包括第一防火层和第二防火层，所述防火功能层由依次层叠的所述第一胶黏剂层、所述第一防火层、所述第二胶黏剂层以及所述第二防火层组成，所述第一胶黏剂层位于所述基体层上。The solar cell back sheet according to claim 2, wherein the at least one adhesive layer comprises a first adhesive layer and a second adhesive layer, and the at least one fireproof layer comprises a first fireproof layer and a second adhesive layer. Two fireproof layers, the fireproof functional layer is composed of the first adhesive layer, the first fireproof layer, the second adhesive layer, and the second fireproof layer stacked in sequence, and the first The adhesive layer is located on the base layer.
  7. 根据权利要求1所述的太阳能电池背板，其中，所述防火功能层还包括胶黏剂层。The solar cell back sheet according to claim 1, wherein the fireproof functional layer further comprises an adhesive layer.
  8. 根据权利要求1-7中任一项所述的太阳能电池背板，其中，所述粘结层的厚度为0.003mm-0.04mm，所述基体层的厚度为0.05mm-1.1mm。The solar cell backsheet according to any one of claims 1-7, wherein the thickness of the adhesive layer is 0.003mm-0.04mm, and the thickness of the base layer is 0.05mm-1.1mm.
  9. 根据权利要求2、4-6任一项所述的太阳能电池背板，其中，每个所述防火层的厚度为0.05mm-3mm。The solar cell back sheet according to any one of claims 2, 4-6, wherein the thickness of each of the fireproof layers is 0.05mm-3mm.
  10. 根据权利要求2、4-6任一项所述的太阳能电池背板，其中，每个所述胶黏剂层的厚度为0.003mm-0.025mm。The solar cell back sheet according to any one of claims 2, 4-6, wherein the thickness of each adhesive layer is 0.003mm-0.025mm.
  11. 根据权利要求3或5所述的太阳能电池背板，其中，所述耐候层的厚度为0.005mm-0.05mm。The solar cell back sheet according to claim 3 or 5, wherein the thickness of the weather resistant layer is 0.005mm-0.05mm.
  12. 根据权利要求5所述的太阳能电池背板，其中，所述粘结层为含氟涂覆层，所述基体层为聚对苯二甲酸乙二醇酯PET薄膜层，所述第一胶黏剂层为聚氨酯胶粘剂层，所述防火层的材料为石墨片，所述第二胶黏剂层为聚氨酯胶粘剂 层，所述耐候层的材料为耐紫外PET。The solar cell back sheet according to claim 5, wherein the adhesive layer is a fluorine-containing coating layer, the base layer is a polyethylene terephthalate PET film layer, and the first adhesive layer The agent layer is a polyurethane adhesive layer, the material of the fireproof layer is graphite sheet, the second adhesive layer is a polyurethane adhesive layer, and the material of the weather resistant layer is ultraviolet resistant PET.
  13. 根据权利要求6所述的太阳能电池背板，其中，所述粘结层为含氟涂覆层，所述基体层的材料为PET薄膜层，所述第一胶黏剂层为聚酯型胶粘剂层，所述第一防火层的材料为云母纸，所述第二胶黏剂层为聚酯型胶粘剂层，所述第二防火层的材料为铝箔。The solar cell back sheet according to claim 6, wherein the adhesive layer is a fluorine-containing coating layer, the material of the base layer is a PET film layer, and the first adhesive layer is a polyester adhesive The material of the first fireproof layer is mica paper, the second adhesive layer is a polyester adhesive layer, and the material of the second fireproof layer is aluminum foil.
  14. 根据权利要求7所述的太阳能电池背板，其中，所述粘结层为含氟涂覆层，所述基体层为PET薄膜层，所述胶黏剂层为丙烯酸胶粘剂层，所述防火层的材料为铝箔。The solar cell back sheet according to claim 7, wherein the adhesive layer is a fluorine-containing coating layer, the base layer is a PET film layer, the adhesive layer is an acrylic adhesive layer, and the fireproof layer The material is aluminum foil.
PCT/CN2020/077575 2019-12-27 2020-03-03 Solar cell backplane WO2021128585A1 (en)

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KR20160011478A (en) * 2014-07-22 2016-02-01 주식회사 엘지화학 Back sheet for light module, method for manufacturing the same and light module comprising the same
CN205194718U (en) * 2015-12-02 2016-04-27 江阴宝柏包装有限公司 High resistant separates flexible solar cell backplate
CN106876511A (en) * 2017-02-22 2017-06-20 苏州赛伍应用技术有限公司 A kind of solar cell backboard

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KR20160011478A (en) * 2014-07-22 2016-02-01 주식회사 엘지화학 Back sheet for light module, method for manufacturing the same and light module comprising the same
CN205194718U (en) * 2015-12-02 2016-04-27 江阴宝柏包装有限公司 High resistant separates flexible solar cell backplate
CN106876511A (en) * 2017-02-22 2017-06-20 苏州赛伍应用技术有限公司 A kind of solar cell backboard

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