WO2021010575A1 - Solar cell panel - Google Patents

Solar cell panel Download PDF

Info

Publication number
WO2021010575A1
WO2021010575A1 PCT/KR2020/004842 KR2020004842W WO2021010575A1 WO 2021010575 A1 WO2021010575 A1 WO 2021010575A1 KR 2020004842 W KR2020004842 W KR 2020004842W WO 2021010575 A1 WO2021010575 A1 WO 2021010575A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
solar cell
solar panel
wiring
cover portion
Prior art date
Application number
PCT/KR2020/004842
Other languages
French (fr)
Korean (ko)
Inventor
김민표
최정훈
김충의
김정규
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Publication of WO2021010575A1 publication Critical patent/WO2021010575A1/en

Links

Images

Classifications

    • 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
    • H01L31/0488—Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
    • 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
    • H01L31/02—Details
    • 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
    • H01L31/02—Details
    • H01L31/02002—Arrangements for conducting electric current to or from the device in operations
    • 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
    • H01L31/02—Details
    • H01L31/0203—Containers; Encapsulations, e.g. encapsulation of photodiodes
    • 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
    • H01L31/02—Details
    • H01L31/0216—Coatings
    • 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
    • H01L31/02—Details
    • H01L31/0216—Coatings
    • H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/02162—Coatings for devices characterised by at least one potential jump barrier or surface barrier for filtering or shielding light, e.g. multicolour filters for photodetectors
    • 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
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • 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

  • the present invention relates to a solar panel, and more particularly, to a solar panel having an improved structure.
  • the solar panel having an integrated building structure in order to be applied to the outer wall of a building, it is required to have excellent aesthetic characteristics even after the solar panel having an integrated building structure is installed, and it is required to diversify the color of the solar panel having the integrated building structure or improve the appearance.
  • the solar cell and the wiring connected thereto can be seen from the outside as it is, or can have only a blue color, which is the color of the solar cell, to improve aesthetics and appearance. There were difficulties.
  • yellowing may occur and the appearance of the solar panel may be deteriorated.
  • a glare phenomenon may be generated by the glass substrate located in front of the solar panel having the integrated building structure by being installed perpendicular to the floor surface.
  • the entire surface of the solar panel is colored beyond a certain thickness, the amount of light incident on the solar panel is reduced, and the output of the solar panel is greatly reduced.
  • a colored film is used as in Japanese Patent No. 3717369, when viewed from the side or when it is bright, the color by the colored film is recognized differently or separately from other members, thereby reducing aesthetics.
  • a wiring portion formed of a metal having a predetermined width or more can be easily recognized undesirably, thereby reducing the aesthetic uniformity.
  • An object of the present invention is to provide a solar panel that has excellent aesthetic uniformity, can prevent glare, and can have excellent output.
  • a solar panel includes a solar cell unit including a solar cell and a wiring unit connected to the solar cell; A sealing material positioned on the solar cell unit; A first cover member disposed on the front surface of the solar cell unit on the sealing material and having a cover unit implementing a specific color, image, pattern, feel, or texture; A second cover member positioned on the other surface of the solar cell unit; And at least one or more layers of colored members covering at least a part of the wiring part on the front side of the solar cell part.
  • the wiring portion may include a wide portion having a width of 1 mm or more, and the colored member may partially or entirely overlap at least the wide portion of the wiring portion to cover at least a portion of the wide portion of the wiring portion.
  • the size of the colored member may be equal to or greater than the size of the wide portion of the wiring member.
  • the maximum width of the wide portion of the wiring member not covered by the colored member may be less than 1 mm.
  • the plurality of solar cells are provided to form a solar cell string extending along one direction, and the wiring portion includes a bus ribbon connected to an end of the solar cell string, and the colored member comprises at least a portion of the bus ribbon. Can be positioned to hide.
  • the difference in saturation between the colored member and the solar cell may be 10 or less.
  • a difference in saturation between the coloring member and the rear portion located at the rear portion of the solar cell portion may be 10 or less.
  • the colored member may be positioned between the front surface of the solar cell unit and the sealing material.
  • the colored member may have a thickness of 1 mm or less in the form of a film, a sheet, or a tape.
  • the first cover member may include a glass substrate
  • the second cover member may include a glass substrate
  • a first transmittance which is an average light transmittance of the cover part for light in the infrared region of the cover part, is equal to or greater than a second transmittance, which is an average light transmittance of the cover part for light in the visible light region;
  • the cover portion may be composed of an oxide ceramic composition having an amorphous glass structure.
  • a wiring portion particularly a wide portion of a wiring portion having a width of a certain level or more, from being recognized, and to prevent glare and glare that may occur when the wiring portion is made of metal. Can be prevented.
  • the cover portion and/or the cover portion is provided as in the present embodiment, the wide portion of the wiring portion can be recognized, and a colored portion is additionally provided to effectively prevent recognition of the wide portion of the wiring portion. . Accordingly, it is possible to improve the aesthetic uniformity of the solar panel.
  • FIG. 1 is a diagram schematically showing an example of a building to which a solar panel according to an embodiment of the present invention is applied.
  • FIG. 2 is an exploded perspective view schematically showing a solar panel according to an embodiment of the present invention.
  • FIG. 3 is a schematic cross-sectional view taken along line III-III of FIG. 2.
  • FIG. 4 is a plan view schematically illustrating a first cover member included in the solar panel shown in FIG. 2.
  • FIG. 5 is a flowchart illustrating an example of a method of manufacturing a first cover member included in a solar panel according to an embodiment of the present invention.
  • 6A to 6D are cross-sectional views illustrating each step of the method of manufacturing the first cover member shown in FIG. 5.
  • FIG. 7 is a graph showing light transmittance according to a wavelength of a cover part included in a solar panel according to an embodiment of the present invention according to colors.
  • FIG. 8 is a graph showing the spectral response of a solar cell based on single crystal silicon according to wavelength.
  • FIG. 9 is a graph showing quantum efficiency of a solar cell based on single crystal silicon according to wavelength.
  • FIG. 10 is a scanning electron microscope photograph of examples of a first cover member included in a solar panel according to an embodiment of the present invention.
  • FIG. 11 is a diagram schematically illustrating light diffusion in a cover portion of a first cover member included in a solar panel according to an exemplary embodiment of the present invention.
  • FIG. 12 is a plan view schematically showing a solar cell, a bus ribbon, and a colored member in the solar panel shown in FIG. 2.
  • FIG. 13 is a partial plan view schematically showing a solar cell, a bus ribbon, and a colored member in a solar panel according to a modification of the present invention.
  • 15 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
  • FIG. 16 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
  • FIG. 17 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
  • FIG. 18 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
  • FIG. 19 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
  • FIG. 20 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
  • 21 is an exploded cross-sectional view schematically showing a solar panel according to a modification of the present invention.
  • FIG. 1 is a diagram schematically showing an example of a building 1 to which a solar panel 100 according to an embodiment of the present invention is applied.
  • the solar panel 100 is, for example, a building-integrated structure applied to the outer wall surface (eg, vertical wall 3, roof surface, etc.) It may be a solar panel having. However, the present invention is not limited thereto, and the solar panel 100 may be installed on the roof of the building 1 or in a place other than the building 1.
  • the solar panel 100 may generate electric power by using sunlight supplied from the sun, including a solar cell (reference numeral 150 in FIG. 2 ).
  • the solar panel 100 may have a certain color, image, pattern, feel, and texture. At this time, while improving the aesthetics of the building 1 by the color of the solar panel 100 as described above, it is possible to minimize or prevent a decrease in solar light conversion efficiency by reducing the loss of sunlight.
  • the solar panel 100 will be described in more detail with reference to FIGS. 2 to 4 along with FIG. 1.
  • FIG. 2 is an exploded perspective view schematically showing the solar panel 100 according to an embodiment of the present invention
  • FIG. 3 is a schematic cross-sectional view taken along line III-III of FIG. 2.
  • FIG. 4 is a plan view schematically illustrating a first cover member 110 included in the solar panel 100 shown in FIG. 2.
  • the first cover member 110 and the second cover member 120 are briefly illustrated, and the cover portion 114 and the cover portion 124 are not illustrated.
  • the structure of the solar cell 150 is not illustrated in detail in FIG. 3, and only the antireflection film 152 formed on the front surface is schematically illustrated.
  • the solar panel 100 includes a solar cell unit SP including a solar cell 150 and wiring units 142 and 145 connected thereto, and The sealing material 130 located on the battery part SP, and the sealing material 130 located on one surface (for example, the front) of the solar battery part SP, and implementing a specific color, image, pattern, feeling, or texture
  • the solar cell 150 may include a photoelectric conversion unit that converts the solar cell into electrical energy, and an electrode that is electrically connected to the photoelectric conversion unit to collect and transmit current.
  • the solar cell 150 may be a solar cell generating electric energy from light in a wavelength range of at least 100 nm to 1400 nm (eg, 100 nm to 1200 nm).
  • the photoelectric conversion unit is formed of a crystalline silicon substrate (for example, a silicon wafer), and a conductive type region including a dopant or a conductive type region formed on or on the crystalline silicon substrate. I can.
  • the solar cell 150 based on the crystalline silicon substrate having high crystallinity and low defects has excellent electrical characteristics.
  • a plurality of solar cells 150 are provided while being spaced apart from each other, and a plurality of solar cells 150 may be electrically connected in series, parallel, or serially parallel by wiring units 142 and 145.
  • a plurality of solar cells 150 may be connected in series by a wiring member 142 to form a solar cell string extending long along a first direction (z-axis direction in the drawing).
  • a bus ribbon 145 extending in a second direction crossing the first direction (the x-axis direction in the drawing) may be provided at an end of the solar cell string.
  • the bus ribbon 145 may be connected to both ends of the wiring member 142 of the solar cell string.
  • the bus ribbon 145 may connect adjacent solar cell strings in series, parallel, or series-parallel in the second direction, or connect the solar cell strings to a junction box that prevents reverse current flow.
  • Various structures and shapes capable of connecting the solar cells 150 such as ribbons and wires may be applied as the wiring material 142.
  • the material, shape, and connection structure of the bus ribbon 145 may be variously modified. The present embodiment is not limited to the number, structure, shape, etc. of the wiring portions 142 and 145 used for each solar cell 150.
  • the present invention is not limited thereto, and the structure and method of the solar cell 150 may be variously modified.
  • the solar cell 150 may have various structures such as a compound semiconductor solar cell, a silicon semiconductor solar cell, and a dye-sensitized solar cell. And it is possible that only one solar cell 150 is provided.
  • an antireflection film 152 for preventing the incidence of light is positioned on the front surface of the solar cell 150, and the solar cell 150 has a certain color (for example, due to constructive interference by the antireflection film 152). For example, it may have blue, black, etc.).
  • the wiring parts 142 and 145 may be made of metal. Accordingly, when the first cover member 110 is provided with only a glass substrate, the boundary between the effective area AA in which the solar cell 150 is located and the non-effective area NA in which the solar cell 150 is not located, the non-effective area ( The wiring parts 142 and 145 located at NA) can be easily recognized.
  • the wiring portions 142 and 145 (eg, bus ribbon 145) having a wide portion having a width of 1 mm or more can be more easily recognized. Then, the aesthetics of the solar panel 100 may be deteriorated. Accordingly, in this embodiment, the first cover member 110 is provided with a cover portion (exterior forming portion) 114 and a colored member 160 is further provided, which will be described in detail later.
  • the antireflection layer 152 of the solar cell 150 includes an oxide, nitride, or carbide including silicon (eg, silicon oxide, silicon nitride, or silicon carbide), silicate, or amorphous silicon. It may have a structure in which a plurality of insulating layers are stacked. Alternatively, the antireflection layer 152 of the solar cell 150 may have a structure in which a plurality of insulating layers made of oxide or nitride oxide including silicon, titanium, aluminum, zirconium, zinc, antimony, and copper are stacked.
  • the anti-reflection layer 152 is composed of oxide or nitride oxide, a layer containing silicon nitride and/or a layer containing silicon carbide nitride is further provided inside or outside thereof to prevent problems caused by ultraviolet rays and moisture. I can.
  • the present invention is not limited thereto, and the antireflection layer 152 may have various materials, stacked structures, and the like.
  • the first cover member 110 is positioned on the sealing material 130 (for example, the first sealing material 131) to constitute one surface (for example, the front surface) of the solar panel 100, and the second cover member ( 120) is located on the sealing material 130 (for example, the second sealing material 132) to configure the other surface (for example, the rear surface) of the solar cell 150.
  • Each of the first cover member 110 and the second cover member 120 may be formed of an insulating material capable of protecting the solar cell 150 from external shock, moisture, ultraviolet rays, and the like. Detailed structures of the first and second cover members 110 and 120 will be described in detail later.
  • the sealing material 130 includes a first sealing material 131 positioned between the solar cell unit SP and the first cover member 110 and a first sealing material 131 positioned between the solar cell unit SP and the second cover member 120. It may include first and second sealing materials 131 and 132. The first sealing material 131 and the second sealing material 132 prevent the inflow of moisture and oxygen, and chemically couple the elements of the solar panel 100.
  • the first and second sealing materials 131 and 132 may be formed of an insulating material having light-transmitting and adhesive properties.
  • first sealing material 131 and the second sealing material 132 ethylene vinyl acetate copolymer resin (EVA), polyvinyl butyral, silicon resin, ester resin, olefin resin (for example, polyolefin), etc. Can be used.
  • Solar electronics including the second cover member 120, the second sealant 132, the solar cell 150, and the wiring parts 142, 145 by a lamination process using the first and second sealants 131, 132, etc.
  • the branch part SP, the coloring member 160, the first sealing material 131, and the first cover member 110 may be integrated to constitute the solar panel 100.
  • first and second sealing materials 131 and 132 may include various materials other than those described above and may have various shapes.
  • the first and second cover members 110 and 120 allow the solar panel 100 to have a desired appearance such as a certain color, image, pattern, feel, texture, or the like, or the solar cell 150 Alternatively, the wiring portions 142 and 145 connected thereto may have a certain structure that can prevent clearly recognized.
  • the first cover member 110 may have light transmittance through which light may be transmitted so as not to block light incident on the solar cell 150. More specifically, the first cover member 110 includes a first base member 112 and a cover part 114 formed on the first base member 112 and formed of an oxide ceramic composition to form a desired appearance. can do. The cover portion 114 may serve to prevent the solar cell 150 or the wiring portions 142 and 145 connected thereto from being clearly recognized while allowing the solar panel 100 to have a desired appearance.
  • the second cover member 120 may have excellent fire resistance and insulation. More specifically, the second cover member 120 may include a second base member 122 and a cover portion 124 formed on the second base member 122. The cover portion 124 may serve to prevent the solar cell 150 or the wiring portions 142 and 145 connected thereto from being clearly recognized.
  • the first base member 112 may be made of a material having excellent light transmittance (for example, transparent).
  • the first base member 112 may be a substrate, film, or sheet made of glass, resin (eg, polycarbonate, etc.).
  • the first base member 112 may be composed of a single layer or a plurality of layers.
  • the second base member 122 may be made of a material having excellent fire resistance, insulation, and the like.
  • the second base member 122 may be a substrate, film, or sheet made of glass or resin.
  • each of the first and second base members 112 and 122 may be formed of a glass substrate having excellent transparency, excellent insulating properties, stability, durability, and fire resistance.
  • the first and second base members 112 and 122 each have a light transmittance of 80% or more (eg, 85% or more) for light having a wavelength of 380 nm to 1200 nm, a low iron glass substrate (for example, It may be a low iron tempered glass substrate).
  • a low-iron glass substrate containing less iron is used as described above, reflection of sunlight can be prevented and transmittance of sunlight can be increased.
  • the use of a low iron tempered glass substrate can effectively protect the solar cell 150 from external impacts.
  • the first or second cover members 110 and 120 or the solar panel may withstand external shocks such as wind pressure, hail, and snow load. (100) should have sufficient strength.
  • the first or second cover members 110 and 120 or the first or second base members 112 and 122 have a deflection of 5 mm or less in the direction of receiving the force when a force of 2400 Nm 2 is applied. I can.
  • the above-described bending exceeds 5mm, durability against external impacts such as wind pressure and hail snow load is insufficient, and thus it may be difficult to use as an exterior material of the building 1.
  • the first or second base members 112 and 122 may have a thickness of 2.8 mm or more, for example, 2.8 mm to 12 mm (more specifically, 2.8 mm to 8 mm), and may have a thickness of 0.04 to 10 m 2 . It can have an area.
  • the thickness of the first or second base members 112 and 122 is less than 2.8 mm, it may be difficult for the solar panel 100 to withstand an external impact or to have sufficient durability to be applied to the building 1.
  • the thickness of the first or second base members 112 and 122 exceeds 12 mm, the weight of the solar panel 100 increases, and thus it may be difficult to apply to the building 1.
  • the areas of the first or second base members 112 and 122 described above are limited in consideration of structural stability and productivity of the solar panel 100.
  • the present invention is not limited thereto, and the value, thickness, area, etc. of the warpage of the first or second base members 112 and 122 may have various values.
  • the cover portion 114 may be formed on the first base member 112.
  • the cover portion 114 is a portion formed so that the solar panel 100 can have a desired color, image, pattern, feel, texture, and the like.
  • the cover portion 114 may have an achromatic color such as white, gray, black, or a chromatic color such as red, yellow, green, blue, etc., and thus may have a certain color.
  • the cover portion 114 exhibits a transparent or translucent property, a matte or a glossy property, or has a texture different from that of the first base member 112 made of a glass substrate or the like, thereby preventing glare.
  • the cover portion 114 may also serve to prevent the solar cell 150 or the wiring portions 142 and 145 connected thereto from being clearly recognized from the outside.
  • a cover portion 124 may be formed on the second base member 122. The cover portion 124 may have a color that prevents the solar cell 150 or the wiring portions 142 and 145 connected thereto from being clearly recognized from the outside.
  • the cover portion 114 and the cover portion 124 may be made of an oxide ceramic composition.
  • the cover portion 114 may be formed to correspond to a portion of the first base member 112 in the thickness direction on one surface.
  • the cover portion 124 will be described in detail.
  • the cover portion 114 may be formed of an oxide ceramic composition. More specifically, the oxide ceramic composition constituting the cover portion 114 may have an amorphous glass structure. For example, the cover portion 114 may be composed of a glassy oxide ceramic composition.
  • a cover part 114 made of an oxide ceramic composition having an amorphous glass structure as described above with reference to FIGS. 5 and 6A to 6D together with FIGS. 1 to 4 is a first base member 112 ), after explaining in detail the method of forming (that is, the method of manufacturing the first cover member 110 having the cover portion 114 according to the present embodiment) in detail, the cover portion 114 manufactured according to the detailed description Explain clearly.
  • FIGS. 6A to 6D are 1 are cross-sectional views showing each step of a method of manufacturing the cover member 110.
  • the method of manufacturing the first cover member 110 includes a substrate cleaning step (S10), a preheating step (S20), a cover forming layer application step (S30), and a drying step (S40). , It may include a glass strengthening step (S50) and a finishing step (S60).
  • the first base member 112 made of a non-tempered glass substrate is cleaned and dried. Foreign substances or oil films of the first base member 112 may be removed by the substrate cleaning step S10.
  • the non-reinforced glass substrate may have a light transmittance of 80% or more (for example, 85% or more) for light having a wavelength of 380 nm to 1200 nm, and a thickness of 2.8 mm or more.
  • the non-reinforced glass substrate is an architectural non-reinforced glass substrate, and may be prepared by cutting, chamfering, or surface processing (etching).
  • a preheating step S20 of preheating the first base member 112 at a temperature lower than the drying step S40 or the glass strengthening step S50 may be performed.
  • the first base member 112 may be preheated to a temperature of 25 to 150° C. during a process in which the first base member 112 is supplied to the apparatus for the cover forming layer application step S30.
  • the preheating may be performed by directly heating the first base member 112 or may be performed using an infrared heating device or the like.
  • a cover forming layer including a ceramic frit (glass frit) (reference numeral 1144 in FIG. 6B) or the like in the cover forming layer application step (S30) (reference numeral 1140 in FIG. 6B) This may be uniformly applied and the adhesion of the cover forming layer 1140 may be improved.
  • a ceramic material layer (ceramic ink, ceramic paste, or ceramic solution) including a ceramic frit 1144, a pigment 1142, and a resin 1146 Etc.) is applied on the first base member 112 to form a cover formation layer 1140.
  • the ceramic material layer may further include an additive or the like. Various materials such as oxides and metals may be included as additives in consideration of desired properties. Alternatively, it may further include wax, water, oil, an organic solvent, or a viscosity adjusting diluent for adjusting the viscosity as an additive.
  • the ceramic frit 1144 basically serves to stably couple the cover portion 114 to the first base member 112 (in particular, a glass substrate), and selectively implements a specific color, texture, and feel. Can play a role.
  • the ceramic frit 1144 is a compound including a plurality of metals and a non-metal, and may be formed including a plurality of metal compounds.
  • the ceramic frit 1144 may be formed of a plurality of metals and an oxygen polyhedron having a glass structure or an irregular network structure including oxygen.
  • a plurality of metal compounds are each composed of a metal oxide, it is possible to easily and stably form an irregular network structure or a glass structure.
  • saying that it may be formed including a plurality of metal compounds means that a ceramic frit ( 1144) may mean that a compound structure including a plurality of metals and a non-metal (eg, oxygen), an irregular network structure, a glass structure, and the like are provided at least in part.
  • metal compounds for example, metal oxide
  • a ceramic frit may mean that a compound structure including a plurality of metals and a non-metal (eg, oxygen), an irregular network structure, a glass structure, and the like are provided at least in part.
  • the ceramic frit 1144 may be included.
  • the ceramic frit 1144 along with silicon oxide (SiOx, for example, SiO 2 ), aluminum oxide (AlOx, for example, Al 2 O 3 ), sodium oxide (NaOx, for example, Na 2 O), bismuth oxide (BiOx, for example, Bi 2 O 3 ), boron oxide (BOx, for example, B 2 O) and zinc oxide (ZnOx, for example, ZnO) based on at least one of It may be formed by including a material.
  • Ceramic frit 1144 is aluminum oxide, sodium oxide, bismuth oxide, boron oxide, zinc oxide, titanium oxide (TiOx, for example, TiO 2 ), zirconium oxide (ZrOx, for example, ZrO 2 ), potassium Oxide (KOx, for example, K 2 O), lithium oxide (LiOx, for example, Li 2 O), calcium oxide (CaOx, for example, CaO), cobalt oxide (CoOx), iron oxide (FeOx) It may be formed by further including.
  • the ceramic frit 1144 is a bismuth boro-silicate series ceramic material (for example, Bi 2 O 3 -Al 2 O) formed by including bismuth oxide, boron oxide, and silicon oxide.
  • the ceramic frit 1144 is composed of a NAOS-based ceramic material (for example, Na 2 O-Al 2 O 3 -SiO 2 -based material) formed including sodium oxide, aluminum oxide, and silicon oxide. Can be.
  • the ceramic frit 1144 may be formed of a ceramic material (eg, a ZnO-SiO 2 -B 2 O 3 based material) formed of zinc oxide, silicon oxide, or boron oxide.
  • the present invention is not limited thereto, and the ceramic frit 1144 may be formed of various other materials.
  • the pigment 1142 is included in order for the cover portion 114 to have a desired appearance.
  • a material capable of displaying a unique color by selectively absorbing or reflecting visible light in sunlight with the dye 1142 may be used.
  • the pigment 1142 may be a pigment.
  • the pigment is a pigment composed of an inorganic component that is not dissolved in water and most organic solvents, and covers the surface of the first base member 112 to exhibit color. Pigments are excellent in chemical resistance, light resistance, weather resistance and hiding power. In other words, the pigment is resistant to bases and acids, does not discolor or fade when exposed to ultraviolet rays, and can withstand the climate well.
  • the molecular structure may be easily broken by sunlight, which may deteriorate stability, and a protective layer or the like must be formed to protect it.
  • the manufacturing process can be complicated.
  • the dye 1142 may not include a dye.
  • the present invention is not limited thereto, and the dye 1142 may include various substances such as dyes.
  • the pigment 1142 may be made of a material that considers the appearance of the desired cover part 114.
  • the dye 1142 is shown to be provided separately from the ceramic frit 1144, but the present invention is not limited thereto.
  • a desired external appearance of the cover portion 114 may be realized by a material constituting the ceramic frit 1144 and thus the pigment 1142 may not be provided separately from the ceramic frit 1144.
  • the distinction between the ceramic frit 1144 and the pigment 1142 may not be clear.
  • the metal of the material included as the dye 1142 may be included by partially substituting a metal of an irregular network structure or a glass structure (eg, an oxygen polyhedron) constituting the ceramic frit 1144.
  • the metal included in the dye 1142 may be located in an irregular network structure, a glass structure, or an interstitial site of an oxygen polyhedron of the ceramic frit 1144.
  • the cover portion 114 may have a white color due to a metal compound (eg, a metal oxide) included in the ceramic frit 1144.
  • a metal compound eg, a metal oxide
  • the ceramic frit 1144 is formed to include at least one of lead oxide (PbOx, for example, PbO), titanium oxide, aluminum oxide, and bismuth oxide, the cover part 114 is white. Can have.
  • the cover part 114 when it has a white color, it may further include a material such as boron oxide in addition to the above-described material.
  • the ceramic frit 1144 is formed of a ceramic material (BiOx-SiOx-B 2 O-based material) formed of bismuth oxide, silicon oxide, and boron oxide, lead oxide, Ceramic material formed including silicon oxide and boron oxide (PbOx-SiOx-B 2 O-based material), ceramic material formed including titanium oxide, silicon oxide, and boron oxide (TiOx-SiOx-B 2 O-based material) , Aluminum oxide, silicon oxide, and boron oxide. It may be composed of a ceramic material (AlOx-SiOx-B 2 O-based material). However, lead oxide may not be included in the cover portion 114 or the ceramic frit 1144 according to the present embodiment in consideration of environmental issues.
  • various pigments 1142 may be included in order for the cover part 114 to have a color other than white. That is, in consideration of a desired color, one or two or more substances corresponding thereto may be used as the pigment 1142.
  • the material constituting the pigment 1142 may be formed of a metal or an oxide, carbide, nitride, sulfide, chloride, silicate, or the like containing a metal.
  • the pigment 1142 For example, containing at least one of copper (Cu), iron (Fe), nickel (Ni), chromium (Cr), uranium (U), and vanadium (V) to represent a series of red, yellow, etc.
  • a substance or the like can be used as the pigment 1142.
  • a material including at least one of titanium (Ti), magnesium (Mg), and rutile may be used as the pigment 1142 in order to represent a series of green or blue colors.
  • the dye 1142 is cobalt oxide, iron oxide, copper oxide (CuOx), chromium oxide (CrOx), nickel oxide (NiOx), manganese oxide (MnOx), tin oxide (SnOx), antimony oxide (SbOx), vanadium.
  • Oxide (VOx) may be included.
  • CoAl 2 O 4 may be used to implement cyan
  • Co 2 SiO 4 may be used to implement blue
  • green may be used.
  • CoCr 2 O 4 etc. can be used for spherical shape
  • Ti(Cr, Sb)O 2 can be used for yellow color
  • CoFe 2 O 4 for black color
  • Co-Cr-Fe-Mn Spinel or the like can be used.
  • the cover part 114 has a certain color.
  • the cover portion 114 may have a transparent or translucent color, may be glossy or matte, may be used to express a specific texture, or to prevent glare.
  • the cover portion 114 may include the pigment 1142 but may not include the pigment 1142.
  • the ceramic frit 1144 may not contain lead oxide, aluminum oxide, or the like, which may exhibit white, in order to prevent the cover part 114 from having white.
  • the ceramic frit 1144 is a ceramic material (NaOx-SiOx-B 2 O-based material) formed of sodium oxide, silicon oxide, and boron oxide. It can be composed of. Titanium oxide and bismuth oxide are materials that can be used to implement white color, but even if some are included, the cover portion 114 may be kept transparent or translucent. However, even when the cover part 114 has a transparent or translucent color, a small amount of a pigment or pigment 1142 may be included for a slight color development (for example, a red translucent, green translucent, etc.).
  • the resin 1146 is a material used to uniformly mix the pigment 1142 and the ceramic frit 1144 to have an appropriate viscosity and fluidity when applying the ceramic material layer, and may be a volatile material that can be volatilized. .
  • the resin 1146 may include various known materials.
  • an organic resin such as an acrylic resin or a cellulose resin may be used, or an inorganic resin such as a silicone resin may be included.
  • the ceramic material layer or the cover formation layer 1140 contains the ceramic frit 1144 in the largest amount, and even when the pigment 1142 is included, the pigment 1142 may be included in a smaller amount than the ceramic frit 1144.
  • the ceramic frit 1144 is 40 to 90 parts by weight (for example, 50 to 90 parts by weight) based on 100 parts by weight of the ceramic material layer or the cover forming layer 1140. It includes, and may include 5 to 50 parts by weight of the pigment 1142, and 0 to 20 parts by weight of the resin 1146 and/or additives.
  • the ceramic frit 1144 is included in an amount of 50 to 100 parts by weight (for example, 60 to 100 parts by weight) based on 100 parts by weight of the ceramic material layer or the cover forming layer 1140.
  • the resin 1146 and/or the additive may be included in an amount of 0 to 50 parts by weight (eg, 0 to 40 parts by weight).
  • the present invention is not limited thereto, and the ceramic material layer or the cover forming layer 1140 may have various compositions.
  • the cover formation layer 1140 may be applied to the first base member 112 by a spray process, a printing process, or a sol-gel process.
  • a printing process inkjet printing (for example, digital inkjet printing) , Lithography printing, laser printing, screen printing, and the like can be applied.
  • the cover forming layer 1140 can be stably formed to have a desired thickness through a simple process.
  • the present invention is not limited thereto, and the cover formation layer 1140 may be applied by various other methods.
  • the drying step (S40) heat is applied to dry the cover forming layer 1140, while the resin 1146 is volatilized.
  • the resin 1146 and the like are first volatilized so that the dye 1142 and the ceramic frit 1144 can be effectively mixed together with the first base member 112.
  • all of the resin 1146 may be removed, or a part of the resin 1146 may remain.
  • bubbles (pores) reference numeral 114V in FIG. 6D) composed of empty spaces may remain in the portion from which at least a portion of the portion from which the resin 1146 is removed.
  • the cover forming layer 1140 may be dried at a temperature of 50 to 200°C.
  • the drying step S40 may be performed using an infrared heating device, ultraviolet curing, or the like.
  • the present invention is not limited thereto, and the drying temperature, drying method, and the like may be variously changed.
  • the non-reinforced glass substrate constituting the first base member 112 is strengthened or semi-strengthened by thermal strengthening by heat treatment or annealing.
  • the ceramic frit 1144, the pigment 1142, etc. included in the cover forming layer 1140 are mixed into the reinforced or semi-reinforced glass substrate to match the phase equilibrium, thereby forming a part of the reinforced or semi-reinforced glass substrate 114 is formed.
  • the cover forming layer 1140 may have a greater specific gravity than the first base member 112 due to a high mass ratio.
  • the cover forming layer 1140 is fused and sticky due to the high temperature in the glass reinforcing step (S50). As it is, it may be more easily incorporated into the interior of the first base member 112 made of a glass substrate.
  • the glass strengthening step (S50) it may be performed at a temperature capable of strengthening or semi-strengthening the non-tempered glass substrate.
  • the heat treatment temperature of the glass reinforcing step (S50) may be 500 to 800°C (for example, 500 to 750°C, for example, 650 to 750°C), and in a state that is not subjected to high pressure (for example, normal pressure Or at a pressure lower than normal pressure).
  • high pressure for example, normal pressure Or at a pressure lower than normal pressure
  • it may be heat-treated at a pressure of 5 to 20 kPa in the case of reinforcement and 4 kPa in the case of semi-reinforcement.
  • the heat treatment time may be adjusted according to the pressure. If the pressure is high, the heat treatment time may be relatively short, and if the pressure is low, the heat treatment time may be relatively long.
  • the present invention is not limited to the temperature, pressure, time, etc. of the glass strengthening step (S50).
  • the non-reinforced glass substrate constituting the first base member 112 may be semi-reinforced.
  • the first base member 112 or the first cover member 110 may be formed of a heat strengthened glass substrate (heat strengthened glass). Accordingly, the transmittance of the first cover member 110 can be maintained high.
  • the first cover member 110 made of semi-tempered glass may have a surface compressive stress of 60 MPa or less (eg, 24 to 52 MPa).
  • the edge stress of the first cover member 110 may be about 30 to 40 MPa.
  • the semi-tempered glass may be formed by slow cooling after heat treatment at a temperature slightly lower than the softening point.
  • the fully tempered glass may be formed by quenching after heat treatment at a temperature higher than the softening point, and the surface compressive stress is 70 to 200 MPa.
  • the light transmittance of the cover part 114 may be maintained high by adjusting the heat treatment temperature and cooling rate in the glass reinforcing step (S50).
  • the heat treatment temperature within a certain range and lowering the cooling rate to a certain level so that the cover part 114 has an amorphous glass structure
  • the average light transmittance of light in the infrared region may be relatively high. This will be described in more detail later.
  • the infrared region due to a change in the amorphous glass structure due to a change in the chemical structure of the oxide ceramic composition, which is a cover, or a change in the interface bonding between the glass substrate It may be difficult to have an average light transmittance of light of a higher level than the average light transmittance of the visible light region.
  • the heat treatment temperature is less than a certain level (for example, less than 650°C)
  • the possibility that the cover part 114 may be peeled off from the base member 112 may increase, and the heat treatment temperature exceeds a certain level (for example, 750 °C)
  • a certain level for example, 750 °C
  • the first cover member 110 on which the glass reinforcing step S50 has been performed is washed and dried. Then, the manufacture of the first cover member 110 having the integrated cover portion 114 is completed.
  • the content of sodium or potassium in the ceramic material layer, the cover forming layer 1140, or the cover portion 114 may be similar to or lower than the sodium or potassium content of the first base member 112.
  • the content of sodium and potassium in the ceramic material layer, the cover forming layer 1140, or the cover portion 114 may be respectively lower than the sodium and potassium content of the first base member 112.
  • the ceramic material layer, the cover forming layer 1140, or the cover portion 114 may contain sodium and potassium in an amount of 10 ⁇ 10 18 pieces/cc or less.
  • the ceramic material layer, the cover forming layer 1140, or the cover part 114 contains sodium or potassium in excess of the above-described range, a potential-induced degradation (PID) phenomenon occurs due to leakage current. Reliability of the solar panel 100 may be deteriorated.
  • the ceramic material layer, the cover forming layer 1140, or the cover portion 114 does not contain lead and/or chromium (for example, lead oxide and/or chromium oxide), environmental problems may not occur.
  • the amount of sodium, potassium, and lead contained in the ceramic material layer, the cover forming layer 1140, or the cover portion 114 may be measured or determined by secondary ion mass spectrometry (SIMS).
  • SIMS secondary ion mass spectrometry
  • the first cover member 110 formed by such a manufacturing process is reinforced, including a first base member 112 composed of a reinforced or semi-tempered glass substrate, and a ceramic frit 1144 in a reinforced or semi-strengthened glass substrate.
  • it may include a cover portion 114 composed of an integrated portion constituting a part of the semi-tempered glass substrate. That is, the cover part 114 is composed of a part of a reinforced or semi-reinforced glass substrate constituting the first base member 112, but a material different from the first base member 112 (for example, a ceramic having an amorphous glass structure). Oxide composition).
  • the cover portion 114, the ceramic frit 1144, the dye 1142, etc. to the inside of the first base member 112 It can be formed by diffusion and penetration and mixing with the material of the glass substrate. According to this, the cover portion 114 is formed integrally with the first base member 112, so that physical durability and chemical durability may be excellent.
  • the cover portion 114 is composed of an oxide ceramic composition having an amorphous glass structure, as described above.
  • the cover part 114 includes a plurality of metal compounds (eg, metal oxides) including a plurality of metals and non-metals (eg, oxygen) included in the ceramic frit 1144 and/or the pigment 1142 It is formed to include, and may have an oxygen polyhedron having an irregular network structure including a plurality of metals and oxygen, a glass structure, an irregular network structure, and the like.
  • XPS X-ray photoelectron spectroscopy
  • the oxide ceramic composition having such an amorphous glass structure may be formed by heat treatment at a temperature lower than a temperature for forming a general oxide ceramic to have an amorphous glass structure. That is, the oxide ceramic composition having an amorphous glass structure may not include a crystalline portion or may include only partially.
  • the amorphous portion may be the same as or more than the crystalline portion, and in particular, the amorphous portion may be included more than the crystalline portion.
  • the oxide ceramic composition having an amorphous glass structure may have a crystallinity of 50% or less (more specifically, less than 50%, for example, 20% or less).
  • the conventional oxide ceramic refers to an inorganic non-metallic material produced at high temperature and high pressure as an oxide in which ionic bonds, covalent bonds, or bonds thereof are mixed. These oxide ceramics are heat-treated under a high temperature of 850° C. or higher (eg, around 1400° C.) and high pressure to have a crystallized state.
  • the cover part 114 may include the ceramic frit 1144 as a basic material (for example, a material included most, a material included in an amount of 50 parts by weight or more).
  • the cover portion 114 may further include a pigment 1142, an additive, etc. added as necessary.
  • the resin 1146 may be volatilized during the heat treatment in the glass reinforcing step (S50)
  • the cover portion 114 may or may not include the resin 1146. Even when the dye 1142 is included in the cover part 114, the distinction between the ceramic frit 1144 and the dye 1142 of the cover part 114 may not be clear.
  • the metal of the material included as the pigment 1142 may exist in a form including metal such as an oxygen polyhedron constituting the ceramic frit 1144, a glass structure, and an irregular network structure.
  • the ceramic frit 1144 included in the cover part 114 may be determined by various component analysis methods (eg, scanning electron microscope-energy dispersive spectroscopy (SEM-EDX), etc.).
  • the first cover member 110 may implement a desired appearance by the cover portion 114.
  • the color, material, area ratio, thickness, etc. of the cover part 114, or the material, size, concentration, density, etc. of the ceramic frit 1144 and the pigment 1142 included in the cover part 114 By adjusting the appearance and transmittance of the first cover member 110 can be adjusted.
  • the cover portion 114 is lower than that of the first base member 112, but has a certain light transmittance and may transmit a part of sunlight. Then, sunlight can be transmitted through the cover portion 114 as well, so that light loss due to the cover portion 114 can be prevented or minimized.
  • the cover part 114 or the first cover member 110 having the same has a light transmittance of 10% or more for light having a wavelength of 380 nm to 1200 nm (for example, 10% to 95%, more specifically, 20% to 95%).
  • the present invention is not limited thereto. Accordingly, the light transmittance may have various values depending on the color, material, and formation area of the cover part 114.
  • the cover portion 114 is made of an oxide ceramic composition (especially, an oxide ceramic composition having an amorphous glass structure), so that a specific light transmittance shape, bubbles (114V), surface roughness, etc.
  • an oxide ceramic composition especially, an oxide ceramic composition having an amorphous glass structure
  • FIG. 7 is a graph showing light transmittance according to a wavelength of a cover part 114 included in the solar panel 100 according to an embodiment of the present invention according to color.
  • 8 is a graph showing the spectral response of the solar cell 150 based on single crystal silicon according to the wavelength
  • FIG. 9 is a graph showing the quantum efficiency of the solar cell 150 based on single crystal silicon according to the wavelength to be.
  • 10 is a scanning electron microscope photograph of examples of the first cover member 110 included in the solar panel 100 according to an embodiment of the present invention.
  • the first transmittance which is the average light transmittance for light in the infrared region
  • the second transmittance which is the average light transmittance for light.
  • the cover portion 114 made of an oxide ceramic composition having an amorphous glass structure may have a first transmittance greater than a second transmittance.
  • the cover portion 114 composed of an oxide ceramic composition having an amorphous glass structure has an average light transmittance for light in the ultraviolet region than the first and second transmittances for each of the infrared and visible light. Phosphorus third transmittance may be smaller.
  • light in the ultraviolet region may be defined as light having a wavelength of 100 nm to 380 nm
  • light in the visible region may be defined as light having a wavelength of 380 nm to 760 nm
  • light in the infrared region may be defined as light having a wavelength of 760 nm to 1200 nm
  • the average light transmittance may be defined as an average of normalized transmittance so as not to reflect the light transmittance of the first base member 112.
  • the tendency of the second transmittance to be greater than the third transmittance and the first transmittance to be equal to or greater than the second transmittance remains as it is.
  • This tendency may be implemented by the heat treatment temperature and cooling rate in the glass reinforcing step (S50).
  • the first transmittance is equal to or greater than the second transmittance, the amount of light in the infrared region among the light passing through the first cover member 110 and reaching the solar cell 150 even if the cover part 114 is provided. It may be equal to or greater than the amount of light in this visible region. Accordingly, even when the transmittance of light is slightly lowered by the cover part 114, a large amount of light in the infrared region reaches the solar cell 150 and can be used effectively. Accordingly, even if the light transmittance is slightly lowered by the cover part 114, the photoelectric conversion efficiency of the solar cell 150 or the output of the solar cell panel 100 may be prevented or minimized from being lowered.
  • the first and second transmittances may be greater than the third transmittance, respectively.
  • the cover part 114 has a refractive index higher than that of the first base member 112 composed of a glass substrate including ceramic frit 1144, a pigment 1142, and additives, and a first base member composed of a glass substrate depending on the material. This is because it has an extinction coefficient higher than (112). Light in the ultraviolet region does not have a large contribution to the photoelectric conversion efficiency of the solar cell 150 and the output of the solar panel 100, and has high photon energy, so the solar cell 150 and the sealing material 130 It can cause deformation of the back, change of characteristics, etc.
  • the cover part 114 serves to reduce the transmittance of light in the ultraviolet region by scattering, blocking, or absorbing light in the ultraviolet region. Accordingly, the photoelectric conversion efficiency of the solar cell 150, the deformation of the solar cell 150, the sealing material 130, etc., which may be generated by ultraviolet rays without having a large influence on the output of the solar cell panel 100, change in characteristics, etc. Can be minimized.
  • the cover part 114 may have a first transmittance greater than the second transmittance by 2% or more.
  • the first difference between the first transmittance and the second transmittance may be greater than the second difference between the second transmittance and the third transmittance.
  • the solar panel 100 may more effectively use light in the infrared region.
  • the above-described light transmittance may be measured by various methods, and it may be measured by a method capable of measuring both the transmittance of vertical light (normal transmittance) and the transmittance of scattered light (diffused transmittance).
  • the light transmittance can be measured by a standard measurement method such as ISO 9050:2003, BS EN 14500:2008, and the like.
  • the spectral response (ie, short-circuit current density (Isc) or output generated at a specific wavelength of light) of the solar cell 150 based on single crystal silicon in light in the infrared region is high.
  • the quantum efficiency of the solar cell 150 based on single crystal silicon is high in light in the infrared region.
  • the light transmittance is slightly lowered by the cover part 114 implementing a specific color, feel, texture, etc. Even light in the infrared region can be used effectively.
  • the photoelectric conversion efficiency of the solar cell 150 or the output of the solar cell panel 100 can be maintained at a high value. Since light in the ultraviolet region has a very low spectral response and quantum efficiency, the photoelectric conversion efficiency of the solar cell 150 or the output of the solar panel 100 according to the third transmittance of the cover portion 114 is low. Does not affect
  • the cover portion 114 may have air bubbles 114V to have porosity.
  • a heat treatment process for forming the cover part 114 for example, in the glass reinforcing process (S40)
  • the ceramic material layer or the resin 1146 provided in the cover forming layer 1140 volatilizes and bubbles (114V) are formed in the corresponding part. Can remain.
  • bubbles 114V having a size of 0.1 ⁇ m or more may be provided. In the size of the bubbles 114V, the effect of the bubbles 114V can be maximized.
  • the size of the air bubbles 114V may vary depending on the method of forming the cover portion 114. For example, a bubble 114V having a size of 0.1 ⁇ m or more may be provided in the cover portion 114 formed by inkjet printing, and a bubble having a size of 0.5 ⁇ m or more in the cover portion 114 formed by scroll printing. (114V) may be provided.
  • the maximum size of the air bubbles 114V may correspond to the thickness of the cover portion 114.
  • the bubble (114V) may have a size of 0.1um to 15um, and more specifically, the bubble (114V) in the cover portion 114 formed by inkjet printing may have a size of 0.1 to 7um, and screen printing
  • the air bubbles 114V in the cover portion 114 formed by this may have a size of 0.5um to 15um.
  • the total area ratio of the air bubbles 114V may be 4% or more.
  • the total area ratio of the bubbles 114V in the cover portion 114 formed by inkjet printing is 4% or more, and the total area ratio of the bubbles 114V in the cover portion 114 formed by screen printing is 7.5% or more I can.
  • the size and area ratio of the above-described bubbles 114V are the ceramic material layer, the cover forming layer 1140, or the cover portion 114 (or the dye 1142, ceramic frit 1144), and the resin 1146 contained therein. ), etc.), a ceramic material layer, a cover forming layer 1140, or a manufacturing method of the cover portion 114, a process condition, and the like.
  • a cross-sectional photograph of the first cover member 110 having the cover portion 114 formed by inkjet printing is attached to (a) of FIG. 10, and the cover formed by screen printing in (b) and (c) of FIG. 10
  • a cross-sectional photograph and a plan photograph of the first cover member 110 including the portion 114 are attached. As shown in FIG. 10, it can be seen that air bubbles 114V of a predetermined size or more are distributed throughout the cover part 114.
  • a part of the light that may be lost toward the area between the solar cells 150 may be used by directing it to the solar cell 150 or reused by the interface between the cover part 114 and the base member 112. Accordingly, even when the cover unit 114 is provided, the amount of light used for photoelectric conversion can be maximized to maintain the photoelectric conversion efficiency of the solar cell 150 and the output of the solar panel 100 high.
  • at least a part of the cover part 114 may be located in a portion corresponding to an area between the solar cells 150. And, as shown by the dashed-dotted line of FIG.
  • the air bubbles 114V of the cover portion 114 scatter light to have a hemispherical transmission shape toward the outside of the solar panel 100 to prevent glare (anti-glare). Can improve.
  • the cover portion 114 does not have the air bubbles 114V, the diffusion transmission may not occur sufficiently compared to the case with the air bubbles 114V, and thus may have a relatively low light transmittance.
  • the surface roughness of the boundary portion between the first base member 112 and the cover portion 114 (that is, the interface of the cover portion 114) in the portion where the cover portion 114 is formed is the cover portion 114 It may be greater than the surface roughness of the other portion of the first base member 112 is not formed. That is, as shown in the enlarged circle of FIG. 3, the surface roughness of the boundary portion formed by the cover portion 114 and one surface of the first base member 112 in the first cover member 110 is the first base member ( 112) may be larger than the surface roughness of the other or side surfaces. This is because when the cover part 114 is formed, the ceramic frit 1144, the dye 1142, etc. are mixed into the inside of the first base member 112, or the material moves for the other phase equilibrium while the first base member ( This is because the surface roughness may be relatively large at the interface with 112).
  • the light diffusion part LD is located on the other surface where the cover part 114 is not formed.
  • the light diffusion unit LD diffuses light to prevent recognition of the solar cell 150 as much as possible, and improves uniformity such as color by the cover unit 114.
  • the light diffusion part LD may serve to improve adhesion by increasing an adhesion area with the sealing material 130.
  • the light diffusion unit LD may have a size of 10 to 500 ⁇ m, and may have various shapes such as a rounded shape (eg, a shape corresponding to a part of a sphere), an angled shape, and a pyramid shape.
  • the above-described light diffusion unit LD may have a protruding shape in an embossed shape, or may have a concave shape in an intaglio shape.
  • the size of the light diffusion part LD may be equal to or greater than the surface roughness of the boundary portion in which the cover part 114 is formed (for example, it may be larger).
  • the size of the light diffusion unit LD may mean a distance between the uppermost end and the lowermost end of the light diffusion unit LD. Accordingly, the diffusion effect by the light diffusion unit LD may be improved.
  • the surface roughness of the boundary portion in which the cover portion 114 is formed may be equal to or greater than the surface roughness of the light diffusion unit LD (for example, it may be greater).
  • the surface roughness of the light diffusion unit LD may mean a surface roughness on the outer surface constituting the shape of the light diffusion unit LD. This is because the light diffusion unit LD has a relatively small surface roughness since the light diffusion unit LD is formed through a specific processing process to have a certain shape.
  • the outer surface of the cover portion 114 is illustrated to be flat, but the present invention is not limited thereto.
  • the outer surface of the cover portion 114 may have irregularities, bent portions, etc. so as to correspond to irregularities and bent portions of the boundary portion between the cover portion 114 and the first base member 112, and the outer surface of the cover portion 114
  • the surface roughness of the boundary portion between the cover portion 114 and the first base member 112 may have the same or similar surface roughness to that of the other portions of the first base member 112.
  • the cover portion 114 can effectively induce light scattering. That is, when high surface roughness is provided at the interface between the air bubbles 114V in the cover portion 114 and the cover portion 114, it is possible to effectively induce light scattering.
  • the cover portion 114 is located in the corresponding portion between the solar cells 150 (that is, the non-effective area (NA))
  • the light by scattering from the cover portion 114 is the solar cell 150 Can be used for photoelectric conversion. Accordingly, the photoelectric conversion efficiency of the solar cell 150 and the output of the solar cell panel 100 can be maintained high.
  • the above-described cover part 114 may have a greater refractive index (for example, a refractive index of 1.48 or more) than the first base member 112 or the sealing material 130.
  • the cover portion 114 may have a thickness of 1 ⁇ m or more (for example, 1 ⁇ m to 15 ⁇ m).
  • the thickness of the cover part 114 may vary according to the manufacturing process of the cover part 114. For example, when the cover portion 114 is formed by scroll printing, it may have a thickness of 1um to 15um, and when formed by inkjet printing, it may have a thickness of 1um to 7um.
  • the thickness of the cover part 114 is less than 1 ⁇ m, it may be difficult to achieve a desired appearance, and when the color 1142 is included, the density of the colorant 1142 may be reduced, and thus it may be difficult to display a desired color.
  • the thickness of the cover portion 114 exceeds 15 ⁇ m (for example, 7 ⁇ m), the overall light transmittance may decrease, and phenomena such as peeling or cracking of the cover portion 114 may occur.
  • the thickness of the cover part 114 may be 1 um to 3 um (for example, 1 um to 2 um), but the present invention is limited thereto. no.
  • the thickness of the cover portion 114 may be adjusted according to the color. For example, when the cover portion 114 has a white color having a relatively low light transmittance, a thickness smaller than that of the cover portion 114 of another color Can have.
  • the conventional layer formed on the first cover member 110 has a low light transmittance in the infrared region, so that the amount of light in the infrared region is less than that in the visible region in the light reaching the solar cell. It was difficult to use.
  • the antireflection layer for preventing reflection has the greatest light transmittance at a corresponding wavelength so as to prevent reflection of light having a short wavelength of about 600 nm, which has the strongest intensity of sunlight.
  • the antireflection layer has a refractive index of about 1.3, which is smaller than that of the first base member 112 and the sealing material 130, and has a thickness of 500 nm or less (for example, about 200 nm). Accordingly, characteristics are different from that of the cover forming layer 114 of the present embodiment, and it is difficult to effectively use the light in the infrared region.
  • the layer (for example, an anti-reflection layer) provided on the first cover member 110 is formed by being stacked on the first cover member 112, the first cover member 110 The surface roughness at the interface of the provided layer (for example, the anti-reflection layer) does not have a difference from other portions.
  • the cover part 114 is provided only in a part of the cover area CA of the first cover member 110, and when viewed from a distance spaced apart by a predetermined distance, the cover part 114 covers the entire cover area CA.
  • the cover area CA means an area recognized as having the same color, image, pattern, feel, texture, etc. so that a certain color, image, pattern, feel, texture, etc. can be realized. More specifically, as shown in (a) of FIG. 4, the cover portions 114 of a certain shape are positioned at regular intervals over the entire area of the first base member 112, and as shown in (b) of FIG. Likewise, when viewed from a certain distance apart, the first base member 112 or the cover area CA in which the cover part 114 is located may be recognized as one color as a whole.
  • the plurality of cover parts 114 interposed between the light transmitting part (LTA) are It can be recognized as one. That is, the first base member having high light transmittance located between the plurality of cover parts 114 while the cover area CA in which the plurality of cover parts 114 is located is recognized as one color by the plurality of cover parts 114 Solar light may be transmitted to the solar cell 150 by passing through the first cover member 110 without significant loss through the light transmitting part LTA composed of 112.
  • the cover portion 114 is formed only on a part of the first or second cover members 110 and 120.
  • the cover portion 114 constituting the cover area CA may have various shapes including a circle, an ellipse, a polygon (triangle, square, etc.), a stripe shape, a checkered shape, an irregular shape, or a combination thereof.
  • the solar panel 100 when the solar panel 100 is viewed with the naked eye away from a certain distance or more (for example, 1 m or more), the solar panel 100 is formed with a certain color, image, and pattern by the first cover member 110. , Feel, texture, etc. can be uniformly overall. For example, when the solar panel 100 is viewed from a distance sufficient to view the exterior of a building (reference numeral 1 in FIG. 1, hereinafter the same), the appearance of the building 1 can be improved while the output is not significantly reduced. have.
  • the present invention is not limited thereto, and the cover portion 114 may be formed while having one color in the entire area of the first cover member 110.
  • the cover portion 114 may include a portion having two or more colors. Other variations are possible.
  • the second cover member 120 may be formed of a colored glass substrate with a cover portion 124.
  • the cover portion 124 may be a portion displaying a certain color so that the solar cell 150, the wiring portions 142, and 145 are not recognized from the outside.
  • the cover portion 124 is located on the rear surface of the solar panel 100 having an integrated building structure, and thus the cover portion 124 does not require diffusion or scattering of light, and thus may have a specific color.
  • the second cover member 120 or the cover portion 124 is a solar cell 150 in the International Lighting Commission (CIE) Lab (i.e., CIE L * a * b * ) color coordinate, D65 standard light source (noon solar light source).
  • CIE International Lighting Commission
  • the color difference ( ⁇ E * ab) level between the antireflection layer 152 of the solar cell 150 and the second cover member 120 may be 11 or less.
  • the above-described color difference ( ⁇ E * ab) level is 11 or less, it is possible to prevent the solar cell 150, the wiring parts 142, 145, and the like from being recognized outside a certain distance or more.
  • the luminance (L * ) of the D65 standard light source may have a relatively dark color of 50 or less. Then, the solar cell 150, the wiring parts 142, 145, and the like can be effectively prevented from being recognized from the outside.
  • the present invention is not limited thereto, and the luminance (L*) exceeds 50 in the International Lighting Commission (CIE) Lab (ie, CIE L*a*b*) color coordinate, D65 standard light source to have a relatively bright color. I can.
  • the color of the cover part 124 may be the same as or different from the color of the cover part 114.
  • the cover portion 124 may not be formed as transparent or translucent, and may have an achromatic color other than white, an opaque color, or a color of the same series as the solar cell 150.
  • the cover portion 124 is black, gray, blue, green, brown, a color of the same series as the solar cell 150 (in particular, the anti-reflection layer 152 of the solar cell 150), or You can have mixed colors. Since white is a color having high brightness, it may be difficult to form the cover portion 124 using it.
  • the solar panel 100 has uniform color as a whole, so that aesthetics may be further improved.
  • the present invention is not limited thereto. Even in colors other than the above-described colors, various colors may be used as long as the color has a lower brightness than the cover part 114 or a light transmittance lower than that of the base member 112 and/or the base part 122.
  • the second cover member 120 has a certain color and prevents the solar cell 150 from being recognized, it is not necessary to change the color of the sealing material 130.
  • Including a pigment (eg, carbon black) for changing color in the sealing material 130 may cause problems such as deterioration of the insulating properties of the sealing material 130 undesirably.
  • the present invention is not limited thereto, and various modifications are possible, such as including a pigment or the like on at least a part of the sealing material 130.
  • the cover portion 124 may be made of an oxide ceramic composition.
  • the first and second cover members 110 and 120 may be formed by the same or similar manufacturing process, thereby simplifying the manufacturing process.
  • the description of the oxide ceramic composition constituting the cover portion 114 and the first cover member 110 described above It can be applied as it is.
  • the cover portion 124 may be formed of a material other than the oxide ceramic composition.
  • the second cover member 120 may include a second base member 122 and a cover portion 124 formed on the second base member 122 and formed of a plurality of cover layers.
  • the plurality of cover layers are formed in a number capable of implementing a specific color, and each cover layer may be made of various materials such as a dielectric material, an insulating material, and a semiconductor material.
  • the cover portion 124 may implement the same or similar color as the anti-reflection layer 152 of the solar cell 150.
  • the cover portion 124 is a silicon layer comprising silicon constituting the photoelectric conversion unit of the solar cell 150, and a dielectric layer or insulating layer disposed on the silicon layer and having the same material and laminated structure as the antireflection layer 152 May include layers. Then, the cover portion 124 may have the same or similar color as the solar cell 150 and thus the same or similar color as the solar cell 150 may be implemented. Accordingly, it is possible to effectively prevent the solar cell 150 and the wiring portions 142 and 145 from being recognized by a simple structure.
  • the cover portion 124 may include a plurality of cover layers each composed of a metal compound (eg, metal oxide or metal nitride oxide).
  • the plurality of cover layers may have a structure in which a plurality of insulating layers composed of oxides or nitride oxides including silicon, titanium, aluminum, zirconium, zinc, antimony, and copper are stacked.
  • the cover portion 124 further includes a layer containing silicon nitride and/or a layer containing silicon carbide nitride inside or outside the plurality of cover layers. , UV rays, moisture, etc. can prevent problems.
  • the cover portion 124 may have a blue color.
  • the cover portion 124 is a first cover layer composed of zirconium oxide, a second cover layer disposed thereon and composed of silicon oxide, a third cover layer disposed thereon and composed of zirconium oxide, and a silicon oxide disposed thereon Including the fourth cover layer including, the cover portion 124 may have a green color.
  • the cover portion 124 can be formed by a simple manufacturing process by evaporation or the like, so that the second cover member 120 having a desired color can be manufactured.
  • the cover portion 124 may be located on the inner surface and/or the outer surface of the second cover member 120.
  • the cover portion 124 may be entirely formed to correspond to the effective area AA and the non-effective area NA, and is formed only in the portion corresponding to the non-effective area NA, and is formed in the effective area AA. May not be formed. If the cover portion 124 is not formed in the effective area AA, the cost for forming the cover portion 124 may be reduced.
  • the second cover member 120 includes the second base member 122 and the cover portion 124 made of a glass substrate, but the present invention is not limited thereto.
  • the cover portion 124 may be formed of a metal film (eg, silver (Ag) or aluminum coated to have a black color), and may be deposited on the second base member 122 formed of a glass substrate.
  • the second cover member 120 may be configured as a single member that is integrated without the second base member 122 and the cover portion 124.
  • the second cover member 120 may be formed of a metal plate (eg, a steel plate), a circuit board, or the like.
  • the second cover member 120 or the second base member 122 is a resin (for example, polycarbonate (PC), polyethylene terephthalate (PET)), ethylene tetrafluoroethylene (ethylene). Tetra fluoro ethylene (ETFE), polytetrafluoroethylene (poly tetra fluoro ethylene, PTFE), etc.) can be composed of a sheet containing, fiber reinforced plastic (fiber reinforced plastic).
  • a separate cover portion 124 may be formed on the second base member 122 made of such a sheet, or a pigment may be included in the second base member 122 to have a certain color.
  • the second base member 122 made of such a sheet or the like may be made of a single layer or a plurality of layers.
  • the second cover member 120 is formed of a colored member having a certain color.
  • the present invention is not limited thereto, and the second cover member 120 may have various characteristics of translucent, non-transmissive, or reflective properties. Other variations are possible.
  • the cover portion 114 is positioned on the outer surface side of the first cover member 110 and the cover portion 124 is positioned on the outer surface side of the second cover member 120. Since the cover part 114 is located on the outer surface of the first cover member 110, glare that may occur when the solar panel 100 is applied to the building 1 can be prevented or minimized by the cover part 114. have.
  • the cover portion 124 may be positioned on the outer surface side of the second cover member 120 and may be positioned close to the rear side of the solar panel 100.
  • the present invention is not limited thereto.
  • the cover portion 114 may be located on at least one of the inner and outer surfaces of the first cover member 112, and/or the cover portion 124 is at least one of the inner and outer surfaces of the second cover member 120 Can be located in
  • the light diffusion portion LD having irregularities, texturing, etc. formed on the cover portion 114 or the other surface on which the cover portion 124 is not formed may be formed.
  • Other variations are possible.
  • a wiring portion including a wide portion having a width of 1 mm or more depending on the shape, color, etc. of the cover portion 114, the shape of the cover portion 124, etc. 142, 145 (eg, bus ribbon 145) may be partially recognized. This phenomenon may occur when the cover part 114 is partially formed as well as when it is formed entirely. Accordingly, in this embodiment, a colored member 160 may be provided. The colored member 160 will be described in detail with reference to FIGS. 2, 3, 12, and 13.
  • FIGS. 12 and 13 schematically illustrate the solar cell 150, the bus ribbon 145, and the coloring member 160, and other configurations other than this are omitted.
  • the colored member 160 is a wiring between the front surface of the solar cell unit SP and the sealing material 130 (more specifically, the first sealing material 131). It may be positioned to cover at least a portion of the parts 142 and 145. In particular, the colored member 160 may partially or entirely overlap a wide portion of 1 mm or more, such as the bus ribbon 145, to cover at least a portion of the wide portion.
  • the colored member 160 may have a specific color (for example, black, gray, or the same or similar color as the solar cell 150), and the wiring portions 142 and 145 (in particular, the bus ribbon 145) Since it has a different reflectivity than that, it is possible to prevent the wiring portions 142 and 145 from being recognized. Considering that the wide portion of the wiring portions 142 and 145 has a relatively large width and is made of metal and can be more easily recognized by reflection, the colored member 160 is used as the wide portion of the wiring portions 142 and 145 It is possible to more effectively prevent the recognition of the wiring parts 142 and 145 by covering them.
  • a difference in saturation between the coloring member 160 and the solar cell 150 may be 10 or less.
  • a difference in saturation between the coloring member 160 and the rear portion (ie, the second sealing material 132 and the second cover member 120) positioned on the rear surface of the solar cell unit SP may be 10 or less.
  • a difference in saturation between the coloring member 160, the solar cell 150, and the rear portion (eg, the second cover member 120) may be 10 or less. If the coloring member 160 has the above-described saturation, it is possible to effectively prevent the recognition of the wide portion of the wiring members 142 and 145.
  • the colored member 160 may be formed in a film form, a sheet form, or a tape form having a thickness of 1 mm or less, and may be positioned at a desired position in various ways.
  • the colored member 160 may be configured to have one or more layered structures.
  • the colored member 160 may be made of the same material as the sealing material 130 and may be configured to include at least a colored first layer and a transparent second layer adhered thereto. In this case, it may be preferable that the transparent second layer is disposed to face the wiring portions 142 and 145. If the first layer is disposed toward the wiring parts 142 and 145, since carbon, one of the materials used to color the first layer, has conductivity, a leakage current may occur and the panel's efficiency may decrease. have.
  • the transparent second layer is disposed so as to face the wiring portion, so that the efficiency of the panel may be prevented from being unexpectedly deteriorated by the coloring member 160.
  • the coloring member 16 may be configured to include a first layer and a second layer configured to have different hues, brightness, or saturation.
  • the colored member 160 composed of such a multi-layered structure is implemented in the form of a film, a sheet, or a tape above, and is a module process in which each component (cover member, sealing material battery part) constituting the solar panel is thermally compressed to integrate It may be attached to the cover member at a desired position in the module, or may be attached before the module process.
  • the colored member 160 may be positioned by being cohesion or adhesion to the solar cell part SP (in particular, the bus ribbon 145).
  • the colored member 160 may be fixed to the solar cell part SP by the sealing material 130 in the lamination process while the colored member 160 is placed on the solar cell part SP (for example, the bus ribbon 145).
  • adhesion refers to an adhesive strength that allows two layers to be attached or separated from each other by physical force at room temperature
  • adhesion refers to two layers being attached to each other through heat treatment to separate the two layers. When doing so, it may mean that any one layer is damaged.
  • the colored member 160 is fixed to the solar cell part SP by adhesion, it is easy to adhere, separate, and position the colored member 160 during the manufacturing process.
  • the colored member 160 When the colored member 160 is fixed to the solar cell part SP by adhesion, the colored member 160 may be more stably fixed during the lamination process. If the colored member 160 is placed on the solar cell unit SP without using a separate adhesive or adhesive material, the process can be simplified.
  • one colored member 160 is formed to cover the entire portion of the plurality of bus ribbons 145 based on one side of the solar panel 100.
  • the present invention is not limited thereto. Accordingly, a plurality of colored members 160 may be provided so as to correspond to the plurality of bus ribbons 145 based on one side of the solar panel 100.
  • the size (eg, width or length) of the colored member 160 may be equal to or greater than the size (eg, width or length) of the wide portion of the wiring members 142 and 145.
  • the size of the colored member 160 may be larger than the size of the wide portion of the wiring members 142 and 145. Then, the colored member 160 may be effectively prevented from being exposed to the wide portions of the wiring members 142 and 145 by overlapping and covering the entire wide portions of the wiring members 142 and 145.
  • the present invention is not limited thereto. Therefore, the size of the colored member 160 may be equal to or greater than the size of the wide portion of the wiring members 142 and 145.
  • the colored member 160 may cover only a part of the wide portion of the wiring members 142 and 145 and expose a part of it.
  • the maximum widths D1 and D2 of the wide portions of the wiring members 142 and 145 not covered by the colored member 160 may be less than 1 mm. In this way, even when the colored member 160 covers only a part of the wide portion of the wiring members 142 and 145, if the maximum widths D1 and D2 of the wide portion of the exposed wiring members 142 and 145 are less than 1 mm, the wiring material You can make (142, 145) not easily recognized.
  • the conventional colored glass has very low light transmittance, and when applied to the first cover member 110 of the solar panel 100, the output of the solar panel 100 may be greatly reduced.
  • the present embodiment it is possible to prevent the wide portion of the wiring portions 142 and 145, particularly the wiring portions 142 and 145 having a width of a certain level or more, from being recognized, and the wiring portions 142 and 145 When it is made of metal, it is possible to prevent glare and glare that may occur.
  • the cover portion 114 and/or the cover portion 114 is provided as in the present embodiment, the wide portion of the wiring portions 142 and 145 can be recognized, and the colored portion 160 is added. Is provided to effectively prevent recognition of the wide portion of the wiring portions 142 and 145. Accordingly, it is possible to improve the aesthetic uniformity of the solar panel 100. As shown in (a) of FIG.
  • the wide portion of the wiring portions 142 and 145 is not recognized, but shown in FIG. 14 (b). As described above, in the conventional case where the colored portion 160 is not provided, the wide portion of the wiring portions 142 and 142 can be recognized.
  • 15 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
  • the second sealing material 132 may be colored to have a certain color.
  • the difference in saturation between the coloring member 160, the solar cell 150, and the rear portion may be 10 or less.
  • the first cover member 110 includes a cover portion (reference numeral 114 in FIG. 3, the same hereinafter)
  • the second cover member 120 includes a cover portion (reference numeral 124 in FIG. 3, the same hereinafter). You may or may not have it.
  • FIG. 16 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
  • the second sealing material 132 may include a first sealing layer 132a and a second sealing layer 132b having different colors.
  • the first sealing layer 132a adjacent to the solar cell part SP may have a higher transmittance than the second sealing layer 132b (for example, composed of a transparent sealing layer), and the second sealing layer (132b) may be colored to have a certain color.
  • the difference in saturation between the coloring member 160, the solar cell 150, and the rear portion (the first sealing material 132 and the second cover member 120, in particular, the second sealing layer 132b) may be 10 or less.
  • the first cover member 110 may or may not include the cover portion 114
  • the second cover member 120 may or may not include the cover portion 124.
  • FIG. 17 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
  • the wiring member 142 and the second sealing member 132 are not provided, and between the solar cell unit SP and the second cover member 120 at the rear surface of the solar cell unit SP.
  • a wiring board 135 having wirings connected to the solar cell 150 and the bus ribbon 140 may be provided.
  • the difference in saturation between the coloring member 160, the solar cell 150, and the rear portion may be 10 or less.
  • the first cover member 110 may include a cover portion 114.
  • FIG. 18 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
  • a junction having an adhesive property between the overlapped solar cells 150 by overlapping a part of the solar cell 150 without a wiring material (reference numeral 142 in FIG. 2, hereinafter the same)
  • a member (not shown) may be positioned to form a solar cell string.
  • 18 illustrates that the second cover member 120 is colored, but the present invention is not limited thereto, and various structures may be applied.
  • the first cover member 110 may include a cover portion 114.
  • FIG. 19 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
  • the solar cell 150 has a rear electrode structure in which first and second electrodes having different polarities are located on the rear side, and the wiring member 142 is adjacent to the solar cell 150.
  • the solar cell 150 can be electrically connected from the rear side.
  • 19 illustrates that the second cover member 120 is colored, but the present invention is not limited thereto, and various structures may be applied.
  • the first cover member 110 may include a cover portion 114.
  • FIG. 20 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
  • the wiring member 142 and the second sealing member 132 are not provided, and between the solar cell unit SP and the second cover member 120 at the rear surface of the solar cell unit SP.
  • a wiring board 135 having wirings connected to the solar cell 150 and the bus ribbon 140 may be provided.
  • a through hole 132a may be formed in the second sealing material 132, and a through bonding material 144 connecting the wiring board 135 and the solar cell 150 may be provided.
  • the difference in saturation between the coloring member 160, the solar cell 150, and the rear portion (the wiring substrate 135 and the second cover member 120, particularly the wiring substrate 135) may be 10 or less.
  • the first cover member 110 may include a cover portion 114.
  • a separate second cover member (reference numeral 120 in FIG. 2) may be omitted and the wiring board 135 may be used as a second cover member constituting the outer surface.

Abstract

A solar cell panel according to one embodiment of the present invention comprises: a solar cell part including solar cells and a wiring part connected to the solar cells; a sealing material located on the solar cell part; a first cover member which is located on the sealing material above the front surface of the solar cell part , and which has a cover part for implementing a specific color, image, pattern, feel or texture; a second cover member located on the other surface of the solar cell part; and a colored member for covering at least a part of the wiring part on the front surface of the solar cell part.

Description

태양 전지 패널Solar panel
본 발명은 태양 전지 패널에 관한 것으로서, 좀더 상세하게는, 구조를 개선한 태양 전지 패널에 관한 것이다.The present invention relates to a solar panel, and more particularly, to a solar panel having an improved structure.
일반적으로 태양 전지 패널을 건물에 적용하는 경우에는 옥상이나 지붕 등에 설치하였다. 그러나 아파트나 고층 건물 등에서는 옥상이나 지붕에 설치될 수 있는 태양 전지 패널의 크기가 한정되어 태양광을 효율적으로 활용하기 어려웠다. 이에 최근에는 주택, 건물 등의 외벽 등에 설치되어 주택, 건물 등과 일체화되는 건물 일체형 구조를 가지는 태양 전지 패널에 대한 연구가 활발하게 이루어지고 있다. 건물 일체형 구조를 가지는 태양 전지 패널을 적용하면 건물의 외벽의 넓은 면적에서 광전 변환이 이루어질 수 있어 태양광을 효과적으로 사용할 수 있다. In general, when solar panels are applied to buildings, they are installed on a roof or a roof. However, in apartments and high-rise buildings, the size of solar panels that can be installed on the roof or roof is limited, making it difficult to efficiently utilize sunlight. Accordingly, in recent years, research on solar panels having an integrated building structure that is installed on the exterior walls of houses, buildings, etc. and integrated into houses, buildings, etc. has been actively conducted. When a solar panel having an integrated building structure is applied, photoelectric conversion can be performed in a large area of the outer wall of the building, so that sunlight can be effectively used.
그런데, 건물의 외벽에 적용되기 위해서는 건물 일체형 구조를 가지는 태양 전지 패널이 설치된 후에도 우수한 심미적 특성을 가져야 하는바, 건물 일체형 구조를 가지는 태양 전지 패널의 색상을 다양화하거나 외관을 향상하는 것이 요구된다. 그러나 기존의 건물 일체형 구조를 가지는 태양 전지 패널은, 태양 전지, 이에 연결되는 배선 등이 그대로 외부에서 보여지거나, 태양 전지의 색상인 푸른색 계열의 색상만을 가질 수 있어, 심미성, 외관 등을 향상하기에 어려움이 있었다. 더욱이, 태양 전지 패널의 장시간 사용 시 황변이 발생하여 태양 전지 패널의 외관이 저하될 수 있었다. 또한, 건물 일체형 구조를 가지는 태양 전지 패널이 건물의 외벽, 특히 수직 벽체에 설치되면, 바닥면과 수직하게 설치되어 건물 일체형 구조를 가지는 태양 전지 패널의 전면에 위치한 유리 기판에 의하여 눈부심 현상이 발생될 수 있었다. However, in order to be applied to the outer wall of a building, it is required to have excellent aesthetic characteristics even after the solar panel having an integrated building structure is installed, and it is required to diversify the color of the solar panel having the integrated building structure or improve the appearance. However, in a solar panel having an existing building-integrated structure, the solar cell and the wiring connected thereto can be seen from the outside as it is, or can have only a blue color, which is the color of the solar cell, to improve aesthetics and appearance. There were difficulties. Moreover, when the solar panel is used for a long time, yellowing may occur and the appearance of the solar panel may be deteriorated. In addition, when a solar panel having an integrated building structure is installed on an outer wall of a building, especially a vertical wall, a glare phenomenon may be generated by the glass substrate located in front of the solar panel having the integrated building structure by being installed perpendicular to the floor surface. Could
이를 방지하기 위하여 태양 전지 패널의 전면에 일정 두께를 초과하여 착색을 하면 태양 전지 패널에 입사되는 광의 양이 줄어 태양 전지 패널의 출력이 크게 저하되었다. 다른 예로, 일본등록특허 제3717369호와 같이 착색 필름을 사용하면, 옆에서 보거나 밝을 경우에 착색 필름에 의한 색상이 다르게 인식되거나 다른 부재와 별도로 인식되어 심미성을 저하시킬 수 있었다. 그리고 착색 등을 하는 경우에도 일정 이상의 폭을 가지며 금속으로 형성된 배선부는 원하지 않게 쉽게 인식될 수 있어 미관 균일도가 저하될 수 있었다.In order to prevent this, if the entire surface of the solar panel is colored beyond a certain thickness, the amount of light incident on the solar panel is reduced, and the output of the solar panel is greatly reduced. As another example, when a colored film is used as in Japanese Patent No. 3717369, when viewed from the side or when it is bright, the color by the colored film is recognized differently or separately from other members, thereby reducing aesthetics. In addition, even when coloring or the like, a wiring portion formed of a metal having a predetermined width or more can be easily recognized undesirably, thereby reducing the aesthetic uniformity.
본 발명은 우수한 미관 균일도를 가지며 눈부심 현상을 방지할 수 있으며 우수한 출력을 가질 수 있는 태양 전지 패널을 제공하고자 한다.An object of the present invention is to provide a solar panel that has excellent aesthetic uniformity, can prevent glare, and can have excellent output.
본 발명의 실시예에 따른 태양 전지 패널은, 태양 전지 및 상기 태양 전지에 연결되는 배선부를 포함하는 태양 전지부; 상기 태양 전지부 위에 위치하는 밀봉재; 상기 밀봉재 위에서 상기 태양 전지부의 전면 위에 위치하며 특정한 색상, 이미지, 패턴, 느낌, 또는 질감을 구현하는 커버부를 구비하는 제1 커버 부재; 상기 태양 전지부의 타면 위에 위치하는 제2 커버 부재; 및 상기 태양 전지부의 전면 쪽에서 상기 배선부의 적어도 일부를 가리는 적어도 1층 이상의 착색 부재를 포함한다. A solar panel according to an embodiment of the present invention includes a solar cell unit including a solar cell and a wiring unit connected to the solar cell; A sealing material positioned on the solar cell unit; A first cover member disposed on the front surface of the solar cell unit on the sealing material and having a cover unit implementing a specific color, image, pattern, feel, or texture; A second cover member positioned on the other surface of the solar cell unit; And at least one or more layers of colored members covering at least a part of the wiring part on the front side of the solar cell part.
상기 배선부가 폭이 1mm이상인 광폭 부분을 포함하고, 상기 착색 부재가 적어도 상기 배선부의 상기 광폭 부분에 부분적 또는 전체적으로 중첩되어 상기 배선부의 상기 광폭 부분의 적어도 일부를 가릴 수 있다. The wiring portion may include a wide portion having a width of 1 mm or more, and the colored member may partially or entirely overlap at least the wide portion of the wiring portion to cover at least a portion of the wide portion of the wiring portion.
상기 착색 부재의 크기가 상기 배선재의 상기 광폭 부분의 크기와 같거나 그보다 클 수 있다. The size of the colored member may be equal to or greater than the size of the wide portion of the wiring member.
*상기 착색 부재에 의하여 가려지지 않은 상기 배선재의 상기 광폭 부분의 최대 폭이 1mm 미만일 수 있다. * The maximum width of the wide portion of the wiring member not covered by the colored member may be less than 1 mm.
상기 태양 전지가 복수로 구비되어 일 방향을 따라 연장되는 태양 전지 스트링을 구성하고, 상기 배선부가 상기 태양 전지 스트링의 단부에 연결되는 버스 리본을 포함하며, 상기 착색 부재가 상기 버스 리본의 적어도 일부를 가리도록 위치할 수 있다. The plurality of solar cells are provided to form a solar cell string extending along one direction, and the wiring portion includes a bus ribbon connected to an end of the solar cell string, and the colored member comprises at least a portion of the bus ribbon. Can be positioned to hide.
상기 착색 부재와 상기 태양 전지의 채도(saturation) 차이가 10 이하일 수 있다. The difference in saturation between the colored member and the solar cell may be 10 or less.
상기 착색 부재와 상기 태양 전지부의 후면부에 위치한 후면부의 채도 차이가 10 이하일 수 있다. A difference in saturation between the coloring member and the rear portion located at the rear portion of the solar cell portion may be 10 or less.
상기 착색 부재가 상기 태양 전지부의 전면과 상기 밀봉재 사이에 위치할 수 있다. The colored member may be positioned between the front surface of the solar cell unit and the sealing material.
상기 착색 부재는 두께가 1mm 이하인 필름 형태, 시트 형태, 또는 테이프 형태로 구성될 수 있다. The colored member may have a thickness of 1 mm or less in the form of a film, a sheet, or a tape.
상기 제1 커버 부재가 유리 기판으로 포함하고, 상기 제2 커버 부재가 유리 기판을 포함할 수 있다. The first cover member may include a glass substrate, and the second cover member may include a glass substrate.
상기 커버부에서 적외선 영역의 광에 대한 상기 커버부의 평균 광 투과도인 제1 투과도가 가시광선 영역의 광에 대한 상기 커버부의 평균 광 투과도인 제2 투과도와 같거나 그 보다 더 크거나; 또는 상기 커버부가 비정질 상태의 유리 구조를 가지는 산화물 세라믹 조성물로 구성될 수 있다.A first transmittance, which is an average light transmittance of the cover part for light in the infrared region of the cover part, is equal to or greater than a second transmittance, which is an average light transmittance of the cover part for light in the visible light region; Alternatively, the cover portion may be composed of an oxide ceramic composition having an amorphous glass structure.
본 실시예에 의하면, 배선부, 특히 일정 수준 이상의 폭을 가지는 배선부의 광폭 부분이 인식되는 것을 방지할 수 있고, 배선부가 금속으로 구성되는 경우에 발생할 수 있는 반짝임, 글래어(glare) 현상 등을 방지할 수 있다. 특히, 본 실시예에서와 같이 커버부 및/또는 커버 부분이 구비되는 경우에도 배선부의 광폭 부분은 인식될 수 있는바, 착색 부분이 추가로 구비되어 배선부의 광폭 부분의 인식을 효과적으로 방지할 수 있다. 이에 따라 태양 전지 패널의 미적 균일도를 향상할 수 있다. According to the present embodiment, it is possible to prevent a wiring portion, particularly a wide portion of a wiring portion having a width of a certain level or more, from being recognized, and to prevent glare and glare that may occur when the wiring portion is made of metal. Can be prevented. In particular, even when the cover portion and/or the cover portion is provided as in the present embodiment, the wide portion of the wiring portion can be recognized, and a colored portion is additionally provided to effectively prevent recognition of the wide portion of the wiring portion. . Accordingly, it is possible to improve the aesthetic uniformity of the solar panel.
도 1은 본 발명의 실시예에 따른 태양 전지 패널이 적용된 건물의 일 예를 개략적으로 도시한 도면이다.1 is a diagram schematically showing an example of a building to which a solar panel according to an embodiment of the present invention is applied.
도 2는 본 발명의 일 실시예에 따른 태양 전지 패널을 개략적으로 도시한 분해 사시도이다. 2 is an exploded perspective view schematically showing a solar panel according to an embodiment of the present invention.
도 3은 도 2의 III-III 선을 따라 잘라서 본 개략적인 단면도이다. FIG. 3 is a schematic cross-sectional view taken along line III-III of FIG. 2.
도 4는 도 2에 도시한 태양 전지 패널에 포함되는 제1 커버 부재를 개략적으로 도시한 평면도이다.4 is a plan view schematically illustrating a first cover member included in the solar panel shown in FIG. 2.
도 5은 본 발명의 실시예에 따른 태양 전지 패널에 포함되는 제1 커버 부재의 제조 방법의 일 예를 도시한 흐름도이다. 5 is a flowchart illustrating an example of a method of manufacturing a first cover member included in a solar panel according to an embodiment of the present invention.
도 6a 내지 도 6d는 도 5에 도시한 제1 커버 부재의 제조 방법의 각 단계를 도시한 단면도들이다.6A to 6D are cross-sectional views illustrating each step of the method of manufacturing the first cover member shown in FIG. 5.
도 7은 본 발명의 실시예에 따른 태양 전지 패널에 포함되는 커버부의 파장에 따른 광 투과도를 색상에 따라 도시한 그래프이다. 7 is a graph showing light transmittance according to a wavelength of a cover part included in a solar panel according to an embodiment of the present invention according to colors.
도 8은 파장에 따른 단결정 실리콘을 기반으로 하는 태양 전지의 스펙트럼 응답을 도시한 그래프이다. 8 is a graph showing the spectral response of a solar cell based on single crystal silicon according to wavelength.
도 9는 파장에 따른 단결정 실리콘을 기반으로 하는 태양 전지의 양자 효율을 도시한 그래프이다. 9 is a graph showing quantum efficiency of a solar cell based on single crystal silicon according to wavelength.
도 10는 본 발명의 실시예에 따른 태양 전지 패널에 포함되는 제1 커버 부재의 예들을 촬영한 주사전자현미경 사진이다. 10 is a scanning electron microscope photograph of examples of a first cover member included in a solar panel according to an embodiment of the present invention.
도 11은 본 발명의 실시예에 따른 태양 전지 패널에 포함되는 제1 커버 부재의 커버부에서의 광 확산을 개략적으로 설명한 도면이다. 11 is a diagram schematically illustrating light diffusion in a cover portion of a first cover member included in a solar panel according to an exemplary embodiment of the present invention.
도 12는 도 2에 도시한 태양 전지 패널에서 태양 전지, 버스 리본 및 착색 부재를 개략적으로 도시한 평면도이다. 12 is a plan view schematically showing a solar cell, a bus ribbon, and a colored member in the solar panel shown in FIG. 2.
도 13은 본 발명의 변형예에 따른 태양 전지 패널에서 태양 전지, 버스 리본 및 착색 부재를 개략적으로 도시한 부분 평면도이다.13 is a partial plan view schematically showing a solar cell, a bus ribbon, and a colored member in a solar panel according to a modification of the present invention.
도 14의 (a) 및 (b)는 본 발명의 실시예 및 비교예에 따른 태양 전지 패널을 각기 촬영한 사진이다. 14A and 14B are photographs of solar panels according to Examples and Comparative Examples of the present invention, respectively.
도 15는 본 발명의 다른 실시예에 따른 태양 전지 패널을 개략적으로 도시한 분해 단면도이다. 15 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
도 16은 본 발명의 또 다른 실시예에 따른 태양 전지 패널을 개략적으로 도시한 분해 단면도이다. 16 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
도 17은 본 발명의 또 다른 실시예에 따른 태양 전지 패널을 개략적으로 도시한 분해 단면도이다. 17 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
도 18은 본 발명의 또 다른 실시예에 따른 태양 전지 패널을 개략적으로 도시한 분해 단면도이다. 18 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
도 19는 본 발명의 또 다른 실시예에 따른 태양 전지 패널을 개략적으로 도시한 분해 단면도이다. 19 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
도 20은 본 발명의 또 다른 실시예에 따른 태양 전지 패널을 개략적으로 도시한 분해 단면도이다. 20 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
도 21은 본 발명의 일 변형예에 따른 태양 전지 패널을 개략적으로 도시한 분해 단면도이다.21 is an exploded cross-sectional view schematically showing a solar panel according to a modification of the present invention.
이하에서는 첨부한 도면을 참조하여 본 발명의 실시예를 상세하게 설명한다. 그러나 본 발명이 이러한 실시예에 한정되는 것은 아니며 다양한 형태로 변형될 수 있음은 물론이다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it goes without saying that the present invention is not limited to these embodiments and may be modified in various forms.
도면에서는 본 발명을 명확하고 간략하게 설명하기 위하여 설명과 관계 없는 부분의 도시를 생략하였으며, 명세서 전체를 통하여 동일 또는 극히 유사한 부분에 대해서는 동일한 도면 참조부호를 사용한다. 그리고 도면에서는 설명을 좀더 명확하게 하기 위하여 두께, 넓이 등을 확대 또는 축소하여 도시하였는바, 본 발명의 두께, 넓이 등은 도면에 도시된 바에 한정되지 않는다.In the drawings, in order to clearly and briefly describe the present invention, portions not related to the description are omitted, and the same reference numerals are used for identical or extremely similar portions throughout the specification. In addition, in the drawings, the thickness and width are enlarged or reduced in order to clarify the description. However, the thickness and width of the present invention are not limited to those shown in the drawings.
그리고 명세서 전체에서 어떠한 부분이 다른 부분을 "포함"한다고 할 때, 특별히 반대되는 기재가 없는 한 다른 부분을 배제하는 것이 아니며 다른 부분을 더 포함할 수 있다. 또한, 층, 막, 영역, 판 등의 부분이 다른 부분 "위에" 있다고 할 때, 이는 다른 부분 "바로 위에" 있는 경우뿐 아니라 그 중간에 다른 부분이 위치하는 경우도 포함한다. 층, 막, 영역, 판 등의 부분이 다른 부분 "바로 위에" 있다고 할 때에는 중간에 다른 부분이 위치하지 않는 것을 의미한다. In addition, when a certain part "includes" another part throughout the specification, the other part is not excluded, and other parts may be further included unless specifically stated to the contrary. In addition, when a part such as a layer, film, region, plate, etc. is said to be "on" another part, this includes not only the case where the other part is "directly above", but also the case where the other part is located in the middle. When a part such as a layer, a film, a region, or a plate is "directly over" another part, it means that no other part is located in the middle.
그리고 이하에서 "제1", "제2", "제3" 등의 용어는 서로 간의 구별을 위하여 사용한 것일 뿐 본 발명이 그 용어 자체에 한정되는 것은 아니다. In the following, terms such as "first", "second", and "third" are used for distinction from each other, and the present invention is not limited thereto.
이하, 첨부한 도면을 참조하여 본 발명의 실시예에 따른 태양 전지 패널을 상세하게 설명한다. Hereinafter, a solar panel according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명의 실시예에 따른 태양 전지 패널(100)이 적용된 건물(1)의 일 예를 개략적으로 도시한 도면이다.1 is a diagram schematically showing an example of a building 1 to which a solar panel 100 according to an embodiment of the present invention is applied.
도 1을 참조하면, 본 실시예에 따른 태양 전지 패널(100)은, 일 예로, 건물(1)의 외벽면(예를 들어, 수직 벽체(3), 지붕면 등)에 적용되는 건물 일체형 구조를 가지는 태양 전지 패널일 수 있다. 그러나 본 발명이 이에 한정되는 것은 아니며, 태양 전지 패널(100)이 건물(1)의 옥상, 또는 건물(1)이 아닌 다른 곳 등에 설치될 수도 있다. 이러한 태양 전지 패널(100)은 태양 전지(도 2의 참조부호 150)를 포함하여 태양으로부터 공급되는 태양광을 이용하여 전력을 생산할 수 있다. Referring to FIG. 1, the solar panel 100 according to the present embodiment is, for example, a building-integrated structure applied to the outer wall surface (eg, vertical wall 3, roof surface, etc.) It may be a solar panel having. However, the present invention is not limited thereto, and the solar panel 100 may be installed on the roof of the building 1 or in a place other than the building 1. The solar panel 100 may generate electric power by using sunlight supplied from the sun, including a solar cell (reference numeral 150 in FIG. 2 ).
본 실시예에서 태양 전지 패널(100)은 일정한 색상, 이미지, 패턴, 느낌, 질감 등을 가질 수 있다. 이때, 이와 같이 태양 전지 패널(100)의 색상 등에 의하여 건물(1)의 심미성을 향상하면서도 태양광의 손실을 줄여 태양광 변환 효율의 감소를 최소화 또는 방지할 수 있도록 한다. 도 1과 함께 도 2 내지 도 4를 참조하여 태양 전지 패널(100)을 좀더 상세하게 설명한다. In this embodiment, the solar panel 100 may have a certain color, image, pattern, feel, and texture. At this time, while improving the aesthetics of the building 1 by the color of the solar panel 100 as described above, it is possible to minimize or prevent a decrease in solar light conversion efficiency by reducing the loss of sunlight. The solar panel 100 will be described in more detail with reference to FIGS. 2 to 4 along with FIG. 1.
도 2는 본 발명의 일 실시예에 따른 태양 전지 패널(100)을 개략적으로 도시한 분해 사시도이고, 도 3은 도 2의 III-III 선을 따라 잘라서 본 개략적인 단면도이다. 그리고 도 4는 도 2에 도시한 태양 전지 패널(100)에 포함되는 제1 커버 부재(110)를 개략적으로 도시한 평면도이다. 간략하고 명확한 도시를 위하여 도 2에서는 제1 커버 부재(110) 및 제2 커버 부재(120)를 간략하게 도시하여 커버부(114) 및 커버 부분(124)을 도시하지 않았다. 그리고 도 3에서 태양 전지(150)의 구조를 상세하게 도시하지 않았으며 전면에 형성된 반사 방지막(152)만을 개략적으로 도시하였다. 2 is an exploded perspective view schematically showing the solar panel 100 according to an embodiment of the present invention, and FIG. 3 is a schematic cross-sectional view taken along line III-III of FIG. 2. And FIG. 4 is a plan view schematically illustrating a first cover member 110 included in the solar panel 100 shown in FIG. 2. For the sake of simplicity and clarity, in FIG. 2, the first cover member 110 and the second cover member 120 are briefly illustrated, and the cover portion 114 and the cover portion 124 are not illustrated. In addition, the structure of the solar cell 150 is not illustrated in detail in FIG. 3, and only the antireflection film 152 formed on the front surface is schematically illustrated.
도 2 내지 도 4를 참조하면, 본 실시예에 따른 태양 전지 패널(100)은, 태양 전지(150) 및 이에 연결되는 배선부(142, 145)를 포함하는 태양 전지부(SP)와, 태양 전지부(SP) 위에 위치하는 밀봉재(130)와, 밀봉재(130) 위에서 태양 전지부(SP)의 일면(일 예로, 전면)에 위치하며 특정한 색상, 이미지, 패턴, 느낌, 또는 질감을 구현하는 커버부(114)를 구비하는 제1 커버 부재(또는 전면 부재)(110)와, 밀봉재(130) 위에서 태양 전지부(SP)의 타면(일 예로, 후면)에 위치하는 제2 커버 부재(또는 후면 부재)(120)와, 태양 전지부(SP)의 전면 쪽에서 배선부(142, 145)의 적어도 일부를 가리는 착색 부재(160)를 포함한다. 2 to 4, the solar panel 100 according to the present embodiment includes a solar cell unit SP including a solar cell 150 and wiring units 142 and 145 connected thereto, and The sealing material 130 located on the battery part SP, and the sealing material 130 located on one surface (for example, the front) of the solar battery part SP, and implementing a specific color, image, pattern, feeling, or texture A first cover member (or front member) 110 having a cover portion 114, and a second cover member (or a second cover member) positioned on the other surface (for example, the rear surface) of the solar cell unit SP on the sealing material 130 A rear member) 120 and a colored member 160 covering at least a part of the wiring portions 142 and 145 at the front side of the solar cell unit SP.
이때, 태양 전지(150)는, 태양 전지를 전기 에너지로 변환하는 광전 변환부와, 광전 변환부에 전기적으로 연결되어 전류를 수집하여 전달하는 전극을 포함할 수 있다. 예를 들어, 태양 전지(150)는 적어도 100nm 내지 1400nm(일 예로, 100nm 내지 1200nm)의 파장대의 광으로부터 전기 에너지를 생성하는 태양 전지일 수 있다. 본 실시예에서는 일 예로, 광전 변환부가, 결정질 실리콘 기판(일 예로, 실리콘 웨이퍼)과, 결정질 실리콘 기판에 또는 그 위에 형성되며 도펀트를 포함하는 도전형 영역 또는 산화물을 포함하는 도전형 영역으로 구성될 수 있다. 이와 같이 결정성이 높아 결함이 적은 결정질 실리콘 기판을 기반으로 한 태양 전지(150)는 전기적 특성이 우수하다. In this case, the solar cell 150 may include a photoelectric conversion unit that converts the solar cell into electrical energy, and an electrode that is electrically connected to the photoelectric conversion unit to collect and transmit current. For example, the solar cell 150 may be a solar cell generating electric energy from light in a wavelength range of at least 100 nm to 1400 nm (eg, 100 nm to 1200 nm). In this embodiment, as an example, the photoelectric conversion unit is formed of a crystalline silicon substrate (for example, a silicon wafer), and a conductive type region including a dopant or a conductive type region formed on or on the crystalline silicon substrate. I can. The solar cell 150 based on the crystalline silicon substrate having high crystallinity and low defects has excellent electrical characteristics.
그리고 본 실시예에서는 태양 전지(150)가 서로 이격되면서 복수로 구비되며, 복수 개의 태양 전지(150)가 배선부(142, 145)에 의하여 전기적으로 직렬, 병렬 또는 직병렬로 연결될 수 있다. 일 예로, 복수의 태양 전지(150)가 배선재(142)에 의하여 직렬로 연결되어 제1 방향(도면의 z축 방향)을 따라 길게 연장되는 태양 전지 스트링을 구성할 수 있다. 그리고 태양 전지 스트링의 단부에 제1 방향과 교차하는 제2 방향(도면의 x축 방향)으로 연장되는 버스 리본(145)이 구비될 수 있다. 일 예로, 버스 리본(145)은 태양 전지 스트링의 배선재(142)의 양쪽 단부에 연결될 수 있다. 이러한 버스 리본(145)은, 제2 방향에서 인접하는 태양 전지 스트링을 직렬, 병결, 또는 직병렬로 연결하거나, 태양 전지 스트링을 전류의 역류를 방지하는 정션 박스에 연결할 수 있다. 배선재(142)로는 리본, 와이어 등 태양 전지(150)를 연결할 수 있는 다양한 구조, 형상이 적용될 수 있다. 그리고 버스 리본(145)의 물질, 형상, 연결 구조 등은 다양하게 변형될 수 있다. 본 실시예는 각 태양 전지(150)에 사용되는 배선부(142, 145)의 개수, 구조, 형상 등에 한정되지 않는다. Further, in the present embodiment, a plurality of solar cells 150 are provided while being spaced apart from each other, and a plurality of solar cells 150 may be electrically connected in series, parallel, or serially parallel by wiring units 142 and 145. As an example, a plurality of solar cells 150 may be connected in series by a wiring member 142 to form a solar cell string extending long along a first direction (z-axis direction in the drawing). In addition, a bus ribbon 145 extending in a second direction crossing the first direction (the x-axis direction in the drawing) may be provided at an end of the solar cell string. As an example, the bus ribbon 145 may be connected to both ends of the wiring member 142 of the solar cell string. The bus ribbon 145 may connect adjacent solar cell strings in series, parallel, or series-parallel in the second direction, or connect the solar cell strings to a junction box that prevents reverse current flow. Various structures and shapes capable of connecting the solar cells 150 such as ribbons and wires may be applied as the wiring material 142. In addition, the material, shape, and connection structure of the bus ribbon 145 may be variously modified. The present embodiment is not limited to the number, structure, shape, etc. of the wiring portions 142 and 145 used for each solar cell 150.
그러나 본 발명이 이에 한정되는 것은 아니며 태양 전지(150)의 구조, 방식 등은 다양하게 변형될 수 있다. 일 예로, 태양 전지(150)는 화합물 반도체 태양 전지, 실리콘 반도체 태양 전지, 염료 감응형 태양 전지 등의 다양한 구조를 가질 수 있다. 그리고 하나의 태양 전지(150)만이 구비되는 것도 가능하다. However, the present invention is not limited thereto, and the structure and method of the solar cell 150 may be variously modified. For example, the solar cell 150 may have various structures such as a compound semiconductor solar cell, a silicon semiconductor solar cell, and a dye-sensitized solar cell. And it is possible that only one solar cell 150 is provided.
본 실시예에서는 태양 전지(150)의 전면에는 광의 입사를 방지하기 위한 반사 방지막(152)이 위치하는데, 이러한 반사 방지막(152)에 의한 보강 간섭에 의하여 태양 전지(150)가 일정한 색상(예를 들어, 청색, 검은색 등)을 가질 수 있다. 그리고 배선부(142, 145)는 금속으로 구성될 수 있다. 이에 따라 제1 커버 부재(110)가 유리 기판만으로 구비되면 태양 전지(150)가 위치한 유효 영역(AA)와 태양 전지(150)가 위치하지 않은 비유효 영역(NA)의 경계, 비유효 영역(NA)에 위치한 배선부(142, 145) 등이 쉽게 인식될 수 있다. 특히, 폭이 1mm 이상인 광폭 부분을 구비하는 배선부(142, 145)(예를 들어, 버스 리본(145))는 더욱 쉽게 인식될 수 있다. 그러면, 태양 전지 패널(100)의 심미성이 저하될 수 있다. 이에 본 실시예에서는 제1 커버 부재(110)에 커버부(외관 형성부)(114)가 구비되고 착색 부재(160)가 더 구비되는데, 이에 대해서는 추후에 상세하게 설명한다. In this embodiment, an antireflection film 152 for preventing the incidence of light is positioned on the front surface of the solar cell 150, and the solar cell 150 has a certain color (for example, due to constructive interference by the antireflection film 152). For example, it may have blue, black, etc.). In addition, the wiring parts 142 and 145 may be made of metal. Accordingly, when the first cover member 110 is provided with only a glass substrate, the boundary between the effective area AA in which the solar cell 150 is located and the non-effective area NA in which the solar cell 150 is not located, the non-effective area ( The wiring parts 142 and 145 located at NA) can be easily recognized. In particular, the wiring portions 142 and 145 (eg, bus ribbon 145) having a wide portion having a width of 1 mm or more can be more easily recognized. Then, the aesthetics of the solar panel 100 may be deteriorated. Accordingly, in this embodiment, the first cover member 110 is provided with a cover portion (exterior forming portion) 114 and a colored member 160 is further provided, which will be described in detail later.
예를 들어, 태양 전지(150)의 반사 방지층(152)이 실리콘을 포함하는 산화물, 질화물, 또는 탄화물(예를 들어, 실리콘 산화물, 실리콘 질화물, 또는 실리콘 탄화물), 실리케이트, 또는 비정질 실리콘을 포함하는 절연층을 복수로 적층한 구조를 가질 수 있다. 또는, 태양 전지(150)의 반사 방지층(152)은 실리콘, 티타늄, 알루미늄, 지르코늄, 아연, 안티몬, 구리를 포함하는 산화물 또는 질화 산화물로 구성되는 절연층을 복수로 적층한 구조를 가질 수 있다. 반사 방지층(152)이 산화물 또는 질화 산화물로 구성될 경우에 그 내부 또는 외부에 실리콘 질화물을 포함하는 층 및/또는 실리콘 탄화 질화물을 포함하는 층을 더 구비하여, 자외선, 수분 등에 의한 문제를 방지할 수 있다. 그러나 본 발명이 이에 한정되는 것은 아니며 반사 방지층(152)이 다양한 물질, 적층 구조 등을 가질 수 있다.For example, the antireflection layer 152 of the solar cell 150 includes an oxide, nitride, or carbide including silicon (eg, silicon oxide, silicon nitride, or silicon carbide), silicate, or amorphous silicon. It may have a structure in which a plurality of insulating layers are stacked. Alternatively, the antireflection layer 152 of the solar cell 150 may have a structure in which a plurality of insulating layers made of oxide or nitride oxide including silicon, titanium, aluminum, zirconium, zinc, antimony, and copper are stacked. When the anti-reflection layer 152 is composed of oxide or nitride oxide, a layer containing silicon nitride and/or a layer containing silicon carbide nitride is further provided inside or outside thereof to prevent problems caused by ultraviolet rays and moisture. I can. However, the present invention is not limited thereto, and the antireflection layer 152 may have various materials, stacked structures, and the like.
제1 커버 부재(110)는 밀봉재(130)(일 예로, 제1 밀봉재(131)) 상에 위치하여 태양 전지 패널(100)의 일면(일 예로, 전면)을 구성하고, 제2 커버 부재(120)는 밀봉재(130)(이 예로, 제2 밀봉재(132)) 상에 위치하여 태양 전지(150)의 타면(일 예로, 후면)을 구성한다. 제1 커버 부재(110) 및 제2 커버 부재(120)는 각기 외부의 충격, 습기, 자외선 등으로부터 태양 전지(150)를 보호할 수 있는 절연 물질로 구성될 수 있다. 제1 및 제2 커버 부재(110, 120)의 구체적인 구조에 대해서는 추후에 상세하게 설명한다. The first cover member 110 is positioned on the sealing material 130 (for example, the first sealing material 131) to constitute one surface (for example, the front surface) of the solar panel 100, and the second cover member ( 120) is located on the sealing material 130 (for example, the second sealing material 132) to configure the other surface (for example, the rear surface) of the solar cell 150. Each of the first cover member 110 and the second cover member 120 may be formed of an insulating material capable of protecting the solar cell 150 from external shock, moisture, ultraviolet rays, and the like. Detailed structures of the first and second cover members 110 and 120 will be described in detail later.
밀봉재(130)는, 태양 전지부(SP)와 제1 커버 부재(110) 사이에 위치하는 제1 밀봉재(131) 및 태양 전지부(SP)와 제2 커버 부재(120) 사이에 위치하는 제1 및 제2 밀봉재(131, 132)를 포함할 수 있다. 제1 밀봉재(131)와 제2 밀봉재(132)는 수분과 산소의 유입되는 것을 방지하며 태양 전지 패널(100)의 각 요소들을 화학적으로 결합한다. 제1 및 제2 밀봉재(131, 132)는 투광성 및 접착성을 가지는 절연 물질로 구성될 수 있다. 일 예로, 제1 밀봉재(131)와 제2 밀봉재(132)로 에틸렌초산비닐 공중합체 수지(EVA), 폴리비닐부티랄, 규소 수지, 에스테르계 수지, 올레핀계 수지(예를 들어, 폴리올레핀) 등이 사용될 수 있다. 제1 및 제2 밀봉재(131, 132)를 이용한 라미네이션 공정 등에 의하여 제2 커버 부재(120), 제2 밀봉재(132), 태양 전지(150) 및 배선부(142, 145)를 포함하는 태양 전지부(SP), 착색 부재(160), 제1 밀봉재(131), 제1 커버 부재(110)가 일체화되어 태양 전지 패널(100)을 구성할 수 있다.The sealing material 130 includes a first sealing material 131 positioned between the solar cell unit SP and the first cover member 110 and a first sealing material 131 positioned between the solar cell unit SP and the second cover member 120. It may include first and second sealing materials 131 and 132. The first sealing material 131 and the second sealing material 132 prevent the inflow of moisture and oxygen, and chemically couple the elements of the solar panel 100. The first and second sealing materials 131 and 132 may be formed of an insulating material having light-transmitting and adhesive properties. For example, as the first sealing material 131 and the second sealing material 132, ethylene vinyl acetate copolymer resin (EVA), polyvinyl butyral, silicon resin, ester resin, olefin resin (for example, polyolefin), etc. Can be used. Solar electronics including the second cover member 120, the second sealant 132, the solar cell 150, and the wiring parts 142, 145 by a lamination process using the first and second sealants 131, 132, etc. The branch part SP, the coloring member 160, the first sealing material 131, and the first cover member 110 may be integrated to constitute the solar panel 100.
그러나 본 발명이 이에 한정되는 것은 아니다. 따라서, 제1 및 제2 밀봉재(131, 132)가 상술한 설명 이외의 다양한 물질을 포함할 수 있으며 다양한 형태를 가질 수 있다. However, the present invention is not limited thereto. Accordingly, the first and second sealing materials 131 and 132 may include various materials other than those described above and may have various shapes.
본 실시예에서는, 제1 및 제2 커버 부재(110, 120)가, 태양 전지 패널(100)이 일정한 색상, 이미지, 패턴, 느낌, 질감 등의 원하는 외관을 가지도록 하거나, 태양 전지(150) 또는 이에 연결되는 배선부(142, 145)가 명확하게 인식되는 것을 방지할 수 있는 일정한 구조를 가질 수 있다. In this embodiment, the first and second cover members 110 and 120 allow the solar panel 100 to have a desired appearance such as a certain color, image, pattern, feel, texture, or the like, or the solar cell 150 Alternatively, the wiring portions 142 and 145 connected thereto may have a certain structure that can prevent clearly recognized.
제1 커버 부재(110)는 태양 전지(150)로 입사되는 광을 차단하지 않도록 광이 투과할 수 있는 투광성을 가질 수 있다. 좀더 구체적으로, 제1 커버 부재(110)는, 제1 베이스 부재(112)와, 제1 베이스 부재(112)에 형성되며 산화물 세라믹 조성물로 구성되어 원하는 외관을 형성하는 커버부(114)를 포함할 수 있다. 커버부(114)는 태양 전지 패널(100)이 원하는 외관을 가지도록 하면서 태양 전지(150) 또는 이에 연결되는 배선부(142, 145)가 명확하게 인식되는 것을 방지하는 역할을 할 수 있다. The first cover member 110 may have light transmittance through which light may be transmitted so as not to block light incident on the solar cell 150. More specifically, the first cover member 110 includes a first base member 112 and a cover part 114 formed on the first base member 112 and formed of an oxide ceramic composition to form a desired appearance. can do. The cover portion 114 may serve to prevent the solar cell 150 or the wiring portions 142 and 145 connected thereto from being clearly recognized while allowing the solar panel 100 to have a desired appearance.
그리고 제2 커버 부재(120)는 우수한 내화성 및 절연성을 가질 수 있다. 좀더 구체적으로, 제2 커버 부재(120)는, 제2 베이스 부재(122)와, 제2 베이스 부재(122)에 형성되는 커버 부분(124)을 포함할 수 있다. 커버 부분(124)은 태양 전지(150) 또는 이에 연결되는 배선부(142, 145)가 명확하게 인식되는 것을 방지하는 역할을 할 수 있다. In addition, the second cover member 120 may have excellent fire resistance and insulation. More specifically, the second cover member 120 may include a second base member 122 and a cover portion 124 formed on the second base member 122. The cover portion 124 may serve to prevent the solar cell 150 or the wiring portions 142 and 145 connected thereto from being clearly recognized.
이때, 제1 베이스 부재(112)는 우수한 광 투과도를 가지는(일 예로, 투명한) 물질로 구성될 수 있다. 예를 들어, 제1 베이스 부재(112)는 유리, 수지(일 예로, 폴리카보네이트(polycarbonate) 등) 등으로 구성되는 기판, 필름, 시트 등일 수 있다. 이러한 제1 베이스 부재(112)는 단일층 또는 복수의 층으로 구성될 수 있다. 그리고 제2 베이스 부재(122)은 우수한 내화성, 절연성 등을 가지는 물질 등으로 구성될 수 있다. 제2 베이스 부재(122)는 유리, 수지 등으로 구성되는 기판, 필름, 시트 등일 수 있다.In this case, the first base member 112 may be made of a material having excellent light transmittance (for example, transparent). For example, the first base member 112 may be a substrate, film, or sheet made of glass, resin (eg, polycarbonate, etc.). The first base member 112 may be composed of a single layer or a plurality of layers. In addition, the second base member 122 may be made of a material having excellent fire resistance, insulation, and the like. The second base member 122 may be a substrate, film, or sheet made of glass or resin.
특히, 제1 및 제2 베이스 부재(112, 122)가 각기 우수한 투명도, 우수한 절연 특성, 안정성, 내구성, 내화성 등을 가지는 유리 기판으로 이루어질 수 있다. 일 예로, 제1 및 제2 베이스 부재(112, 122)가 각기 380nm 내지 1200nm의 파장을 가지는 광에 대한 광 투과도가 80% 이상(일 예로, 85% 이상)인 저철분 유리 기판(일 예로, 저철분 강화 유리 기판)일 수 있다. 이와 같이 철분을 적게 포함하는 저철분 유리 기판을 사용하면, 태양광의 반사를 방지하고 태양광의 투과율을 높일 수 있다. 그리고 저철분 강화 유리 기판을 사용하면 외부의 충격 등으로부터 태양 전지(150)를 효과적으로 보호할 수 있다. In particular, each of the first and second base members 112 and 122 may be formed of a glass substrate having excellent transparency, excellent insulating properties, stability, durability, and fire resistance. For example, the first and second base members 112 and 122 each have a light transmittance of 80% or more (eg, 85% or more) for light having a wavelength of 380 nm to 1200 nm, a low iron glass substrate (for example, It may be a low iron tempered glass substrate). When a low-iron glass substrate containing less iron is used as described above, reflection of sunlight can be prevented and transmittance of sunlight can be increased. In addition, the use of a low iron tempered glass substrate can effectively protect the solar cell 150 from external impacts.
이때, 태양 전지 패널(100)이 건물(1)의 외장재로 사용될 경우에는, 풍압, 우박, 적설 하중과 같은 외부 충격에도 견딜 수 있도록 제1 또는 제2 커버 부재(110, 120) 또는 태양 전지 패널(100)이 충분한 강도를 가져야 한다. 이를 위하여, 제1 또는 제2 커버 부재(110, 120) 또는 제1 또는 제2 베이스 부재(112, 122)는 2400Nm2의 힘을 가했을 때 힘을 받는 방향으로 발생하는 휨(deflection)이 5mm 이하일 수 있다. 상술한 휨이 5mm를 초과하여 발생하면, 풍압, 우박 적설 하중과 같은 외부 충격에 대한 내구성이 충분하지 않아 건물(1)의 외장재로 사용하기 어려울 수 있다. At this time, when the solar panel 100 is used as an exterior material of the building 1, the first or second cover members 110 and 120 or the solar panel may withstand external shocks such as wind pressure, hail, and snow load. (100) should have sufficient strength. To this end, the first or second cover members 110 and 120 or the first or second base members 112 and 122 have a deflection of 5 mm or less in the direction of receiving the force when a force of 2400 Nm 2 is applied. I can. When the above-described bending exceeds 5mm, durability against external impacts such as wind pressure and hail snow load is insufficient, and thus it may be difficult to use as an exterior material of the building 1.
일 예로, 제1 또는 제2 베이스 부재(112, 122)는 2.8mm 이상, 예를 들어, 2.8mm 내지 12mm(좀더 구체적으로, 2.8mm 내지 8mm)의 두께를 가질 수 있으며, 0.04 내지 10m2의 면적을 가질 수 있다. 제1 또는 제2 베이스 부재(112, 122)의 두께가 2.8mm 미만이면, 태양 전지 패널(100)이 외부 충격을 견디기 어렵거나 건물(1)에 적용되기에 충분한 내구성을 가지기 어려울 수 있다. 제1 또는 제2 베이스 부재(112, 122)의 두께가 12mm를 초과하면, 태양 전지 패널(100)의 무게가 증가하여 건물(1)에 적용되기 어려울 수 있다. 상술한 제1 또는 제2 베이스 부재(112, 122)의 면적은 태양 전지 패널(100)의 구조적 안정성, 생산성 등을 고려하여 한정된 것이다. For example, the first or second base members 112 and 122 may have a thickness of 2.8 mm or more, for example, 2.8 mm to 12 mm (more specifically, 2.8 mm to 8 mm), and may have a thickness of 0.04 to 10 m 2 . It can have an area. When the thickness of the first or second base members 112 and 122 is less than 2.8 mm, it may be difficult for the solar panel 100 to withstand an external impact or to have sufficient durability to be applied to the building 1. When the thickness of the first or second base members 112 and 122 exceeds 12 mm, the weight of the solar panel 100 increases, and thus it may be difficult to apply to the building 1. The areas of the first or second base members 112 and 122 described above are limited in consideration of structural stability and productivity of the solar panel 100.
그러나 본 발명이 이에 한정되는 것은 아니며 제1 또는 제2 베이스 부재(112, 122)의 휨의 값, 두께, 면적 등은 다양한 값을 가질 수 있다. However, the present invention is not limited thereto, and the value, thickness, area, etc. of the warpage of the first or second base members 112 and 122 may have various values.
본 실시예에서 제1 베이스 부재(112)에 커버부(114)가 형성될 수 있다. 여기서, 커버부(114)라 함은 태양 전지 패널(100)이 원하는 색상, 이미지, 패턴, 느낌, 질감 등을 가질 수 있도록 형성된 부분이다. 커버부(114)가 백색, 회색, 검은색 등의 무채색, 또는 빨간색, 노란색, 초록색, 파란색 등과 같은 유채색을 가져 일정한 색상을 가질 수 있다. 또는, 커버부(114)가, 투명 또는 반투명 특성을 나타내거나, 무광택 또는 유광택 특성을 나타내거나, 유리 기판 등으로 구성된 제1 베이스 부재(112)과 다른 질감을 가져 눈부심을 방지할 수 있다. 이러한 커버부(114)는 태양 전지(150), 또는 이에 연결되는 배선부(142, 145) 등이 외부에서 명확하게 인식되는 것을 방지하는 역할도 할 수 있다. 제2 베이스 부재(122) 위에 커버 부분(124)이 형성될 수 있다. 커버 부분(124)은 태양 전지(150), 또는 이에 연결되는 배선부(142, 145) 등이 외부에서 명확하게 인식되는 것을 방지할 수 있는 색상을 가질 수 있다. In this embodiment, the cover portion 114 may be formed on the first base member 112. Here, the cover portion 114 is a portion formed so that the solar panel 100 can have a desired color, image, pattern, feel, texture, and the like. The cover portion 114 may have an achromatic color such as white, gray, black, or a chromatic color such as red, yellow, green, blue, etc., and thus may have a certain color. Alternatively, the cover portion 114 exhibits a transparent or translucent property, a matte or a glossy property, or has a texture different from that of the first base member 112 made of a glass substrate or the like, thereby preventing glare. The cover portion 114 may also serve to prevent the solar cell 150 or the wiring portions 142 and 145 connected thereto from being clearly recognized from the outside. A cover portion 124 may be formed on the second base member 122. The cover portion 124 may have a color that prevents the solar cell 150 or the wiring portions 142 and 145 connected thereto from being clearly recognized from the outside.
본 실시예에서 커버부(114) 및 커버 부분(124)은 산화물 세라믹 조성물로 구성될 수 있다. 일 예로, 커버부(114)는 제1 베이스 부재(112)의 일면에서 두께 방향에서의 일부분에 대응하도록 형성될 수 있다. 이하에서는 산화물 세라믹 조성물로 구성되는 커버부(114)를 상세하게 설명한 후에, 커버 부분(124)에 대하여 상세하게 설명한다. In this embodiment, the cover portion 114 and the cover portion 124 may be made of an oxide ceramic composition. For example, the cover portion 114 may be formed to correspond to a portion of the first base member 112 in the thickness direction on one surface. Hereinafter, after the cover portion 114 formed of the oxide ceramic composition is described in detail, the cover portion 124 will be described in detail.
본 실시예에서 커버부(114)가 산화물 세라믹 조성물로 구성될 수 있다. 좀더 구체적으로, 커버부(114)를 구성하는 산화물 세라믹 조성물이 비정질 상태의 유리 구조를 가질 수 있다. 예를 들어, 커버부(114)가 유리질 산화물 세라믹 조성물(glassy oxide ceramic composition)로 구성될 수 있다. In this embodiment, the cover portion 114 may be formed of an oxide ceramic composition. More specifically, the oxide ceramic composition constituting the cover portion 114 may have an amorphous glass structure. For example, the cover portion 114 may be composed of a glassy oxide ceramic composition.
이하에서는, 도 1 내지 도 4와 함께, 도 5, 도 6a 내지 도 6d를 참조하여 상술한 바와 같이 비정질 상태의 유리 구조를 가지는 산화물 세라믹 조성물로 구성된 커버부(114)를 제1 베이스 부재(112)에 형성하는 방법(즉, 본 실시예에 따른 커버부(114)를 구비하는 제1 커버 부재(110)를 제조하는 방법)을 상세하게 설명한 후에, 이에 따라 제조된 커버부(114)을 상세하게 설명한다. Hereinafter, a cover part 114 made of an oxide ceramic composition having an amorphous glass structure as described above with reference to FIGS. 5 and 6A to 6D together with FIGS. 1 to 4 is a first base member 112 ), after explaining in detail the method of forming (that is, the method of manufacturing the first cover member 110 having the cover portion 114 according to the present embodiment) in detail, the cover portion 114 manufactured according to the detailed description Explain clearly.
도 5은 본 발명의 실시예에 따른 태양 전지 패널(100)에 포함되는 제1 커버 부재(110)의 제조 방법의 일 예를 도시한 흐름도이고, 도 6a 내지 도 6d는 도 5에 도시한 제1 커버 부재(110)의 제조 방법의 각 단계를 도시한 단면도들이다.5 is a flowchart showing an example of a method of manufacturing the first cover member 110 included in the solar panel 100 according to an embodiment of the present invention, and FIGS. 6A to 6D are 1 are cross-sectional views showing each step of a method of manufacturing the cover member 110.
도 5을 참조하면, 본 실시예에 따른 제1 커버 부재(110)의 제조 방법은, 기판 세정 단계(S10), 예비 가열 단계(S20), 커버 형성층 도포 단계(S30), 건조 단계(S40), 유리 강화 단계(S50) 및 마무리 단계(S60)를 포함할 수 있다. Referring to FIG. 5, the method of manufacturing the first cover member 110 according to the present embodiment includes a substrate cleaning step (S10), a preheating step (S20), a cover forming layer application step (S30), and a drying step (S40). , It may include a glass strengthening step (S50) and a finishing step (S60).
도 6a에 도시한 바와 같이, 기판 세정 단계(S10)에서는 비강화 유리 기판으로 구성된 제1 베이스 부재(112)를 세정하고 건조한다. 기판 세정 단계(S10)에 의하여 제1 베이스 부재(112)의 이물질 또는 유막 등이 제거될 수 있다. As shown in Fig. 6A, in the substrate cleaning step S10, the first base member 112 made of a non-tempered glass substrate is cleaned and dried. Foreign substances or oil films of the first base member 112 may be removed by the substrate cleaning step S10.
이때, 비강화 유리 기판은 380nm 내지 1200nm의 파장을 가지는 광에 대한 광 투과도가 80% 이상(일 예로, 85% 이상)이고, 두께가 2.8mm이상일 수 있다. 일 예로, 비강화 유리 기판은 건축용 비강화 유리 기판이며, 절삭, 면취, 또는 표면 가공(etching) 등에 의하여 준비될 수 있다.In this case, the non-reinforced glass substrate may have a light transmittance of 80% or more (for example, 85% or more) for light having a wavelength of 380 nm to 1200 nm, and a thickness of 2.8 mm or more. For example, the non-reinforced glass substrate is an architectural non-reinforced glass substrate, and may be prepared by cutting, chamfering, or surface processing (etching).
기판 세정 단계(S10) 이후에 건조 단계(S40) 또는 유리 강화 단계(S50)보다 낮은 온도에서 제1 베이스 부재(112)를 예비 가열하는 예비 가열 단계(S20)가 수행될 수 있다. 일 예로, 제1 베이스 부재(112)가 커버 형성층 도포 단계(S30)를 위한 장치로 공급되는 공정 중에 25 내지 150℃의 온도로 예비 가열될 수 있다. 이때, 예비 가열은, 제1 베이스 부재(112)를 직접 가열하는 것에 의하여 수행될 수도 있고, 적외선 가열 장치 등을 이용하여 수행될 수도 있다. 제1 베이스 부재(112)에 예비 가열을 수행하면, 커버 형성층 도포 단계(S30)에서 세라믹 프릿(유리 프릿)(도 6b의 참조부호 1144) 등을 포함하는 커버 형성층(도 6b의 참조부호 1140)이 균일하게 도포될 수 있으며 커버 형성층(1140)의 부착력을 향상할 수 있다. After the substrate cleaning step S10, a preheating step S20 of preheating the first base member 112 at a temperature lower than the drying step S40 or the glass strengthening step S50 may be performed. As an example, the first base member 112 may be preheated to a temperature of 25 to 150° C. during a process in which the first base member 112 is supplied to the apparatus for the cover forming layer application step S30. At this time, the preheating may be performed by directly heating the first base member 112 or may be performed using an infrared heating device or the like. When preliminary heating is performed on the first base member 112, a cover forming layer including a ceramic frit (glass frit) (reference numeral 1144 in FIG. 6B) or the like in the cover forming layer application step (S30) (reference numeral 1140 in FIG. 6B) This may be uniformly applied and the adhesion of the cover forming layer 1140 may be improved.
이어서, 도 6b에 도시한 바와 같이, 커버 형성층 도포 단계(S30)에서는, 세라믹 프릿(1144), 색소(1142) 및 수지(1146)를 포함하는 세라믹 물질층(세라믹 잉크, 세라믹 페이스트, 또는 세라믹 용액 등)을 제1 베이스 부재(112) 위에 도포하여 커버 형성층(1140)을 형성한다. 그리고 세라믹 물질층은 첨가제 등을 더 포함할 수 있다. 첨가제로는 원하는 특성을 고려하여 산화물, 금속 등 다양한 물질이 포함될 수 있다. 또는 첨가제로 점도를 조절하기 위한 왁스, 물, 오일, 유기 용매, 또는 점도 조절용 희석제 등을 더 포함할 수 있다. Subsequently, as shown in FIG. 6B, in the cover forming layer application step (S30), a ceramic material layer (ceramic ink, ceramic paste, or ceramic solution) including a ceramic frit 1144, a pigment 1142, and a resin 1146 Etc.) is applied on the first base member 112 to form a cover formation layer 1140. In addition, the ceramic material layer may further include an additive or the like. Various materials such as oxides and metals may be included as additives in consideration of desired properties. Alternatively, it may further include wax, water, oil, an organic solvent, or a viscosity adjusting diluent for adjusting the viscosity as an additive.
여기서, 세라믹 프릿(1144)은 기본적으로 커버부(114)를 제1 베이스 부재(112)(특히, 유리 기판)에 안정적으로 결합시키는 역할을 하며, 선택적으로 특정한 색상, 질감, 느낌 등을 구현하는 역할을 할 수 있다. Here, the ceramic frit 1144 basically serves to stably couple the cover portion 114 to the first base member 112 (in particular, a glass substrate), and selectively implements a specific color, texture, and feel. Can play a role.
세라믹 프릿(1144)이라 함은 복수의 금속, 그리고 비금속을 포함하는 화합물로서, 복수의 금속 화합물을 포함하여 형성될 수 있다. 이러한 세라믹 프릿(1144)은 복수의 금속, 그리고 산소를 포함하는 불규칙 망목 구조(random network structure) 또는 유리 구조를 가지는 산소 다면체로 구성될 수 있다. 복수의 금속 화합물이 각기 금속 산화물로 구성되면 불규칙 망목 구조 또는 유리 구조를 쉽고 안정적으로 형성할 수 있다. 본 명세서에서 복수의 금속 화합물(일 예로, 금속 산화물)을 포함하여 형성될 수 있다고 함은, 복수의 금속 화합물(일 예로, 금속 산화물)을 사용하여 세라밋 프릿(1144)을 제조하여 세라믹 프릿(1144)이 복수의 금속, 그리고 비금속(일 예로, 산소)를 포함하는 화합물 구조, 불규칙 망목 구조, 유리 구조 등을 적어도 일부 구비하여 형성된 것을 의미할 수 있다. The ceramic frit 1144 is a compound including a plurality of metals and a non-metal, and may be formed including a plurality of metal compounds. The ceramic frit 1144 may be formed of a plurality of metals and an oxygen polyhedron having a glass structure or an irregular network structure including oxygen. When a plurality of metal compounds are each composed of a metal oxide, it is possible to easily and stably form an irregular network structure or a glass structure. In the present specification, saying that it may be formed including a plurality of metal compounds (for example, metal oxide) means that a ceramic frit ( 1144) may mean that a compound structure including a plurality of metals and a non-metal (eg, oxygen), an irregular network structure, a glass structure, and the like are provided at least in part.
세라믹 프릿(1144)으로는 알려진 다양한 물질을 포함할 수 있다. 예를 들어, 세라믹 프릿(1144)은, 실리콘 산화물(SiOx, 예를 들어, SiO2)과 함께, 알루미늄 산화물(AlOx, 예를 들어, Al2O3), 나트륨 산화물(NaOx, 예를 들어, Na2O), 비스무스 산화물(BiOx, 예를 들어, Bi2O3), 보론 산화물(BOx, 예를 들어, B2O) 및 아연 산화물(ZnOx, 예를 들어, ZnO) 중 적어도 하나를 기본 물질로 포함하여 형성될 수 있다. 그 외 세라믹 프릿(1144)은 알루미늄 산화물, 나트륨 산화물, 비스무스 산화물, 보론 산화물, 아연 산화물, 티타늄 산화물(TiOx, 예를 들어, TiO2), 지르코늄 산화물(ZrOx, 예를 들어, ZrO2), 포타슘 산화물(KOx, 예를 들어, K2O), 리튬 산화물(LiOx, 예를 들어, Li2O), 칼슘 산화물(CaOx, 예를 들어, CaO), 코발트 산화물(CoOx), 철 산화물(FeOx) 등을 더 포함하여 형성될 수 있다. 예를 들어, 세라믹 프릿(1144)이 비스무스 산화물, 보론 산화물, 실리콘 산화물을 포함하여 형성되는 비스무스 보로-실리케이트 계열(bismuth boro-silicate) 계열 세라믹 물질(예를 들어, Bi2O3-Al2O-SiO2 계열 물질)로 구성될 수 있다. 또는, 세라믹 프릿(1144)이 나트륨 산화물, 알루미늄 산화물, 실리콘 산화물을 포함하여 형성되는 나오스(NAOS) 계열 세라믹 물질(예를 들어, Na2O-Al2O3-SiO2 계열 물질)로 구성될 수 있다. 또는, 세라믹 프릿(1144)이 아연 산화물, 실리콘 산화물, 보론 산화물을 포함하여 형성되는 세라믹 물질(예를 들어, ZnO-SiO2-B2O3 계열 물질)로 구성될 수 있다. 그러나 본 발명이 이에 한정되는 것은 아니며 세라믹 프릿(1144)이 그 외 다양한 물질로 구성될 수 있다. Various materials known as the ceramic frit 1144 may be included. For example, the ceramic frit 1144, along with silicon oxide (SiOx, for example, SiO 2 ), aluminum oxide (AlOx, for example, Al 2 O 3 ), sodium oxide (NaOx, for example, Na 2 O), bismuth oxide (BiOx, for example, Bi 2 O 3 ), boron oxide (BOx, for example, B 2 O) and zinc oxide (ZnOx, for example, ZnO) based on at least one of It may be formed by including a material. Other ceramic frit 1144 is aluminum oxide, sodium oxide, bismuth oxide, boron oxide, zinc oxide, titanium oxide (TiOx, for example, TiO 2 ), zirconium oxide (ZrOx, for example, ZrO 2 ), potassium Oxide (KOx, for example, K 2 O), lithium oxide (LiOx, for example, Li 2 O), calcium oxide (CaOx, for example, CaO), cobalt oxide (CoOx), iron oxide (FeOx) It may be formed by further including. For example, the ceramic frit 1144 is a bismuth boro-silicate series ceramic material (for example, Bi 2 O 3 -Al 2 O) formed by including bismuth oxide, boron oxide, and silicon oxide. -SiO 2 series material). Alternatively, the ceramic frit 1144 is composed of a NAOS-based ceramic material (for example, Na 2 O-Al 2 O 3 -SiO 2 -based material) formed including sodium oxide, aluminum oxide, and silicon oxide. Can be. Alternatively, the ceramic frit 1144 may be formed of a ceramic material (eg, a ZnO-SiO 2 -B 2 O 3 based material) formed of zinc oxide, silicon oxide, or boron oxide. However, the present invention is not limited thereto, and the ceramic frit 1144 may be formed of various other materials.
색소(1142)는 커버부(114)가 원하는 외관을 가지도록 하기 위하여 포함된 것이다. 예를 들어, 커버부(114)가 일정한 색상을 가지는 경우에는 색소(1142)로 태양광 중의 가시광선을 선택적으로 흡수 또는 반사하여 고유한 색상을 나타낼 수 있는 물질을 사용할 수 있다. 일 예로, 색소(1142)는 안료(pigment)일 수 있다. 안료란 물 및 대부분의 유기 용매에 용해되지 않은 무기 성분으로 구성된 색소로서, 제1 베이스 부재(112)의 표면을 피복하여 색을 나타낸다. 안료는 내화학성, 내광성, 내후성 및 은폐력이 우수하다. 즉, 안료는 염기와 산에 강하고, 자외선에 노출되었을 때 변색, 퇴색이 잘 되지 않고, 기후에 잘 견딜 수 있다. 참조로, 유기 용매에 용해되는 유기 성분으로 구성된 염료(dyestuff)를 색소로 사용하면 태양광에 의하여 분자 구조가 쉽게 깨질 수 있어 안정성이 저하될 수 있으며, 이를 보호하기 위한 보호층 등을 형성하여야 해서 제조 공정이 복잡해질 수 있다. 이에 본 실시예에서 색소(1142)는 염료를 포함하지 않을 수 있다. 그러나 본 발명이 이에 한정되는 것은 아니며 색소(1142)가 염료 등의 다양한 물질 등을 포함할 수도 있다. The pigment 1142 is included in order for the cover portion 114 to have a desired appearance. For example, when the cover part 114 has a certain color, a material capable of displaying a unique color by selectively absorbing or reflecting visible light in sunlight with the dye 1142 may be used. For example, the pigment 1142 may be a pigment. The pigment is a pigment composed of an inorganic component that is not dissolved in water and most organic solvents, and covers the surface of the first base member 112 to exhibit color. Pigments are excellent in chemical resistance, light resistance, weather resistance and hiding power. In other words, the pigment is resistant to bases and acids, does not discolor or fade when exposed to ultraviolet rays, and can withstand the climate well. For reference, if dyestuffs composed of organic components soluble in an organic solvent are used as a dye, the molecular structure may be easily broken by sunlight, which may deteriorate stability, and a protective layer or the like must be formed to protect it. The manufacturing process can be complicated. Accordingly, in this embodiment, the dye 1142 may not include a dye. However, the present invention is not limited thereto, and the dye 1142 may include various substances such as dyes.
색소(1142)는 원하는 커버부(114)의 외관을 고려하는 물질로 구성될 수 있다. 도면에서는 색소(1142)가 세라믹 프릿(1144)과 별도로 구비된 것으로 도시하였으나, 본 발명이 이에 한정되는 것은 아니다. 예를 들어, 세라믹 프릿(1144)을 구성하는 물질에 의하여 원하는 커버부(114)의 외관이 구현되어 세라믹 프릿(1144)과 별도로 색소(1142)가 구비되지 않을 수 있다. 또는, 세라믹 프릿(1144)과 색소(1142)의 구별이 명확하지 않을 수 있다. 본 실시예에서 색소(1142)로 포함된 물질의 금속이 세라믹 프릿(1144)을 구성하는 불규칙 망목 구조 또는 유리 구조(일 예로, 산소 다면체)의 금속을 일부 치환하여 이에 포함될 수 있다. 또는, 색소(1142)에 포함된 금속은 세라믹 프릿(1144)의 불규칙 망목 구조, 유리 구조, 또는 산소 다면체의 침입형 자리에 위치할 수 있다.The pigment 1142 may be made of a material that considers the appearance of the desired cover part 114. In the drawing, the dye 1142 is shown to be provided separately from the ceramic frit 1144, but the present invention is not limited thereto. For example, a desired external appearance of the cover portion 114 may be realized by a material constituting the ceramic frit 1144 and thus the pigment 1142 may not be provided separately from the ceramic frit 1144. Alternatively, the distinction between the ceramic frit 1144 and the pigment 1142 may not be clear. In the present embodiment, the metal of the material included as the dye 1142 may be included by partially substituting a metal of an irregular network structure or a glass structure (eg, an oxygen polyhedron) constituting the ceramic frit 1144. Alternatively, the metal included in the dye 1142 may be located in an irregular network structure, a glass structure, or an interstitial site of an oxygen polyhedron of the ceramic frit 1144.
예를 들어, 세라믹 프릿(1144)에 포함된 금속 화합물(일 예로, 금속 산화물)에 의하여 커버부(114)가 백색을 가질 수 있다. 일 예로, 세라믹 프릿(1144)이 납 산화물(PbOx, 예를 들어, PbO), 티타늄 산화물, 알루미늄 산화물 및 비스무스 산화물을 포함하는 군에서 적어도 하나 이상을 포함하여 형성되면 커버부(114)가 백색을 가질 수 있다. 이때, 커버부(114)가 백색을 가질 때 상술한 물질 외에도 보론 산화물 등의 물질을 더 포함할 수 있다. 일 예로, 커버부(114)가 백색을 가질 때 세라믹 프릿(1144)이, 비스무스 산화물, 실리콘 산화물 및 보론 산화물을 포함하여 형성되는 세라믹 물질(BiOx-SiOx-B2O 계열 물질), 납 산화물, 실리콘 산화물 및 보론 산화물을 포함하여 형성되는 세라믹 물질(PbOx-SiOx-B2O 계열 물질), 티타늄 산화물, 실리콘 산화물 및 보론 산화물을 포함하여 형성되는 세라믹 물질(TiOx-SiOx-B2O 계열 물질), 알루미늄 산화물, 실리콘 산화물 및 보론 산화물을 포함하여 형성되는 세라믹 물질(AlOx-SiOx-B2O 계열 물질) 등으로 구성될 수 있다. 다만, 납 산화물은 환경 문제 등을 고려하여 본 실시예에 따른 커버부(114) 또는 세라믹 프릿(1144) 등에 포함되지 않을 수 있다. For example, the cover portion 114 may have a white color due to a metal compound (eg, a metal oxide) included in the ceramic frit 1144. For example, if the ceramic frit 1144 is formed to include at least one of lead oxide (PbOx, for example, PbO), titanium oxide, aluminum oxide, and bismuth oxide, the cover part 114 is white. Can have. In this case, when the cover part 114 has a white color, it may further include a material such as boron oxide in addition to the above-described material. For example, when the cover portion 114 has a white color, the ceramic frit 1144 is formed of a ceramic material (BiOx-SiOx-B 2 O-based material) formed of bismuth oxide, silicon oxide, and boron oxide, lead oxide, Ceramic material formed including silicon oxide and boron oxide (PbOx-SiOx-B 2 O-based material), ceramic material formed including titanium oxide, silicon oxide, and boron oxide (TiOx-SiOx-B 2 O-based material) , Aluminum oxide, silicon oxide, and boron oxide. It may be composed of a ceramic material (AlOx-SiOx-B 2 O-based material). However, lead oxide may not be included in the cover portion 114 or the ceramic frit 1144 according to the present embodiment in consideration of environmental issues.
다른 예로, 커버부(114)가 백색 이외의 색상을 가지도록 하기 위하여 다양한 색소(1142)가 포함될 수 있다. 즉, 원하는 색상을 고려하여 이에 대응하는 하나 또는 둘 이상의 물질을 색소(1142)로 사용할 수 있다. 색소(1142)를 구성하는 물질은 금속, 또는 금속을 포함하는 산화물, 탄화물, 질화물, 황화물, 염화물, 실리케이트 등의 형태로 구성될 수 있다. As another example, various pigments 1142 may be included in order for the cover part 114 to have a color other than white. That is, in consideration of a desired color, one or two or more substances corresponding thereto may be used as the pigment 1142. The material constituting the pigment 1142 may be formed of a metal or an oxide, carbide, nitride, sulfide, chloride, silicate, or the like containing a metal.
예를 들어, 붉은 색, 노란색 등의 계열을 나타내기 위하여 구리(Cu), 철(Fe), 니켈(Ni), 크롬(Cr), 우라늄(U), 바나듐(V) 중 적어도 하나를 포함하는 물질 등을 색소(1142)로 사용할 수 있다. 초록 색 또는 푸른 색 등의 계열을 나타내기 위하여 티타늄(Ti), 마그네슘(Mg), 루타일(rutile) 중 적어도 하나를 포함하는 물질을 색소(1142)로 사용할 수 있다. 그 외에도 색소(1142)가 코발트 산화물, 철 산화물, 구리 산화물(CuOx), 크롬 산화물(CrOx), 니켈 산화물(NiOx), 망간 산화물(MnOx), 주석 산화물(SnOx), 안티몬 산화물(SbOx), 바나듐 산화물(VOx) 등을 포함할 수 있다. For example, containing at least one of copper (Cu), iron (Fe), nickel (Ni), chromium (Cr), uranium (U), and vanadium (V) to represent a series of red, yellow, etc. A substance or the like can be used as the pigment 1142. A material including at least one of titanium (Ti), magnesium (Mg), and rutile may be used as the pigment 1142 in order to represent a series of green or blue colors. In addition, the dye 1142 is cobalt oxide, iron oxide, copper oxide (CuOx), chromium oxide (CrOx), nickel oxide (NiOx), manganese oxide (MnOx), tin oxide (SnOx), antimony oxide (SbOx), vanadium. Oxide (VOx) may be included.
좀더 구체적인 예로, 색소(1142)로, 청록색(cyan)을 구현하기 위하여 CoAl2O4를 사용할 수 있고, 청색(blue)을 구현하기 위하여 Co2SiO4 등을 사용할 수 있고, 녹색(green)을 구형하기 위하여 CoCr2O4 등을 사용할 수 있고, 노란색을 구현하기 위하여 Ti(Cr, Sb)O2를 사용할 수 있으며, 검은색을 구현하기 위하여 CoFe2O4를, Co-Cr-Fe-Mn 스피넬 등을 사용할 수 있다. 또는, 색소(1142)로, 녹색을 구현하기 위하여 NiO, Cr2O3 등을 사용할 수 있고, 분홍색을 구현하기 위하여 Cr-Al 스피넬, Ca-Sn-Si-Cr 스핀, Zr-Si-Fe 지르콘 등을 사용할 수 있고, 회색을 구현하기 위하여 Sn-Sb-V 루타일, 황색을 구현하기 위하여 Ti-Sb-Ni 루타일, Zr-V 바델라이트 등을 사용할 수 있고, 청색을 구현하기 위하여 Co-Zn-Al 스피넬, 갈색을 구현하기 위하여 Zn-Fe-Cr 스피넬, 녹색을 구현하기 위하여 Ca-Cr-Si 가넷 등을 사용할 수 있고, 어두운 청색을 구현하기 위하여 Co-Zn-Si 윌레마이트, Co-Si 감람석 등을 사용할 수 있으며, 갈색을 구현하기 위하여 Zn-Fe-Cr-Al 스피넬 등을 사용할 수 있으며, 심홍색(magenta)를 구현하기 위하여 Au 등을 사용할 수 있다. 이러한 물질은 일 예로 제시한 것에 불과할 뿐 본 발명이 이에 한정되는 것은 아니다. As a more specific example, as the dye 1142, CoAl 2 O 4 may be used to implement cyan, and Co 2 SiO 4 may be used to implement blue, and green may be used. CoCr 2 O 4 etc. can be used for spherical shape, Ti(Cr, Sb)O 2 can be used for yellow color, CoFe 2 O 4 for black color, and Co-Cr-Fe-Mn Spinel or the like can be used. Alternatively, as the dye 1142, NiO, Cr 2 O 3, etc. can be used to implement green, and to implement pink, Cr-Al spinel, Ca-Sn-Si-Cr spin, Zr-Si-Fe zircon And the like, Sn-Sb-V rutile to realize gray, Ti-Sb-Ni rutile, Zr-V badelite, etc. to realize yellow, and Co- Zn-Al spinel, Zn-Fe-Cr spinel for brown color, Ca-Cr-Si garnet for green color, etc. can be used, and Co-Zn-Si willemite, Co- for dark blue color. Si olivine, etc. can be used, Zn-Fe-Cr-Al spinel, etc. can be used to implement brown, and Au can be used to implement magenta. These materials are only presented as an example, and the present invention is not limited thereto.
상술한 설명은 커버부(114)가 일정한 색상을 가지는 것을 예시한 것이다. 그러나 본 발명이 이에 한정되는 것은 아니다. 따라서 커버부(114)가 투명 또는 반투명 색상을 가지거나, 광택 또는 무광택을 나타내거나, 특정한 질감을 표현하거나, 눈부심을 방지하기 위한 것일 수 있다. 이 경우에는 커버부(114)이 색소(1142)가 포함될 수도 있으나 색소(1142)가 포함되지 않을 수 있다. 이때, 커버부(114)가 백색을 가지지 않도록 하기 위하여 세라믹 프릿(1144)은 백색을 나타낼 수 있는 납 산화물, 알루미늄 산화물 등을 포함하지 않을 수 있다. 일 예로, 커버부(114)가 투명 또는 반투명 색상을 가지는 경우에는 세라믹 프릿(1144)이 나트륨 산화물, 실리콘 산화물 및 보론 산화물을 포함하여 형성되는 세라믹 물질(NaOx-SiOx-B2O 계열 물질) 등으로 구성될 수 있다. 티타늄 산화물, 비스무스 산화물은 백색을 구현하는 데 사용될 수 있는 물질이지만 일부 포함되어도 커버부(114)가 투명 또는 반투명하게 유지될 수 있다. 다만, 커버부(114)가 투명 또는 반투명 색상을 가지는 경우에도 약간의 발색 등을 위하여(예를 들어, 적색향 반투명, 녹색향 투명 등)을 위하여 안료 또는 색소(1142)가 소량 포함될 수도 있다.The above description illustrates that the cover part 114 has a certain color. However, the present invention is not limited thereto. Accordingly, the cover portion 114 may have a transparent or translucent color, may be glossy or matte, may be used to express a specific texture, or to prevent glare. In this case, the cover portion 114 may include the pigment 1142 but may not include the pigment 1142. In this case, the ceramic frit 1144 may not contain lead oxide, aluminum oxide, or the like, which may exhibit white, in order to prevent the cover part 114 from having white. For example, when the cover portion 114 has a transparent or translucent color, the ceramic frit 1144 is a ceramic material (NaOx-SiOx-B 2 O-based material) formed of sodium oxide, silicon oxide, and boron oxide. It can be composed of. Titanium oxide and bismuth oxide are materials that can be used to implement white color, but even if some are included, the cover portion 114 may be kept transparent or translucent. However, even when the cover part 114 has a transparent or translucent color, a small amount of a pigment or pigment 1142 may be included for a slight color development (for example, a red translucent, green translucent, etc.).
수지(1146)는 세라믹 물질층을 도포할 때 적절한 점도, 유동성 등을 가지도록 하고 색소(1142)와 세라믹 프릿(1144)을 균일하게 혼합하게 사용되는 물질로서, 휘발될 수 있는 휘발성 물질일 수 있다. 수지(1146)로는 알려진 다양한 물질을 포함할 수 있다. 예를 들어, 수지(1146)로 아크릴계 수지, 셀룰로오스계 수지 등과 같은 유기계 수지를 사용할 수도 있고, 실리콘계 수지와 같이 무기계 수지를 포함할 수도 있다. The resin 1146 is a material used to uniformly mix the pigment 1142 and the ceramic frit 1144 to have an appropriate viscosity and fluidity when applying the ceramic material layer, and may be a volatile material that can be volatilized. . The resin 1146 may include various known materials. For example, as the resin 1146, an organic resin such as an acrylic resin or a cellulose resin may be used, or an inorganic resin such as a silicone resin may be included.
세라믹 물질층 또는 커버 형성층(1140)은 세라믹 프릿(1144)을 가장 많은 양으로 포함하고, 색소(1142)가 포함되는 경우에도 색소(1142)는 세라믹 프릿(1144)보다 작은 양으로 포함될 수 있다. 예를 들어, 색소(1142)를 포함하는 경우에, 세라믹 물질층 또는 커버 형성층(1140) 100 중량부에 대하여 세라믹 프릿(1144)를 40 내지 90 중량부(일 예로, 50 내지 90 중량부)로 포함하고, 색소(1142)를 5 내지 50 중량부로 포함하고, 수지(1146) 및/또는 첨가제를 0 내지 20 중량부로 포함할 수 있다. 색소(1142)를 별도로 포함하지 않는 경우에는, 세라믹 물질층 또는 커버 형성층(1140) 100 중량부에 대하여 세라믹 프릿(1144)이 50 내지 100 중량부(일 예로, 60 내지 100 중량부)로 포함되고, 수지(1146) 및/또는 첨가제가 0 내지 50 중량부(일 예로, 0 내지 40 중량부)로 포함될 수 있다. 그러나 본 발명이 이에 한정되는 것은 아니며, 세라믹 물질층 또는 커버 형성층(1140)이 다양한 조성을 가질 수 있다. The ceramic material layer or the cover formation layer 1140 contains the ceramic frit 1144 in the largest amount, and even when the pigment 1142 is included, the pigment 1142 may be included in a smaller amount than the ceramic frit 1144. For example, in the case of including the dye 1142, the ceramic frit 1144 is 40 to 90 parts by weight (for example, 50 to 90 parts by weight) based on 100 parts by weight of the ceramic material layer or the cover forming layer 1140. It includes, and may include 5 to 50 parts by weight of the pigment 1142, and 0 to 20 parts by weight of the resin 1146 and/or additives. When the pigment 1142 is not separately included, the ceramic frit 1144 is included in an amount of 50 to 100 parts by weight (for example, 60 to 100 parts by weight) based on 100 parts by weight of the ceramic material layer or the cover forming layer 1140. , The resin 1146 and/or the additive may be included in an amount of 0 to 50 parts by weight (eg, 0 to 40 parts by weight). However, the present invention is not limited thereto, and the ceramic material layer or the cover forming layer 1140 may have various compositions.
이러한 커버 형성층(1140)은 스프레이 공정, 프린팅 공정, 졸-겔 공정에 의하여 제1 베이스 부재(112)에 도포될 수 있는데, 예를 들어, 프린팅 공정으로는 잉크젯 프린팅(일 예로, 디지털 잉크젯 프린팅), 리소그래피 프린팅, 레이저 프린팅, 스크린 프린팅 등이 적용될 수 있다. 프린팅 공정에 의하면 간단한 공정에 의하여 커버 형성층(1140)이 원하는 두께를 가지도록 안정적으로 형성할 수 있다. 그러나 본 발명이 이에 한정되는 것은 아니며 그 외 다양한 방법으로 커버 형성층(1140)을 도포할 수 있다. The cover formation layer 1140 may be applied to the first base member 112 by a spray process, a printing process, or a sol-gel process. For example, as a printing process, inkjet printing (for example, digital inkjet printing) , Lithography printing, laser printing, screen printing, and the like can be applied. According to the printing process, the cover forming layer 1140 can be stably formed to have a desired thickness through a simple process. However, the present invention is not limited thereto, and the cover formation layer 1140 may be applied by various other methods.
이어서, 도 6c에 도시한 바와 같이, 건조 단계(S40)에서는 열을 가하여 커버 형성층(1140)을 건조하면서 수지(1146)를 휘발시킨다. 수지(1146) 등을 먼저 휘발시켜 색소(1142), 세라믹 프릿(1144) 등이 제1 베이스 부재(112)와 함께 효과적으로 혼합될 수 있도록 한다. 건조 단계(S40)에서 수지(1146)는, 모두 제거될 수도 있고, 일부가 잔류할 수도 있다. 이때, 수지(1146)가 제거된 부분의 적어도 일부가 제거된 부분에 빈 공간으로 구성된 기포(기공)(도 6d의 참조부호 114V)가 잔류할 수 있다. 일 예로, 건조 단계(S40)에서는 50 내지 200℃의 온도에서 커버 형성층(1140)을 건조할 수 있다. 건조 단계(S40)는 적외선 가열 장치, 자외선 경화 등을 이용하여 수행될 수 있다. 그러나 본 발명이 이에 한정되는 것은 아니며 건조 온도, 건조 방법 등은 다양하게 변화할 수 있다. Subsequently, as shown in FIG. 6C, in the drying step (S40), heat is applied to dry the cover forming layer 1140, while the resin 1146 is volatilized. The resin 1146 and the like are first volatilized so that the dye 1142 and the ceramic frit 1144 can be effectively mixed together with the first base member 112. In the drying step (S40), all of the resin 1146 may be removed, or a part of the resin 1146 may remain. At this time, bubbles (pores) (reference numeral 114V in FIG. 6D) composed of empty spaces may remain in the portion from which at least a portion of the portion from which the resin 1146 is removed. For example, in the drying step (S40), the cover forming layer 1140 may be dried at a temperature of 50 to 200°C. The drying step S40 may be performed using an infrared heating device, ultraviolet curing, or the like. However, the present invention is not limited thereto, and the drying temperature, drying method, and the like may be variously changed.
이어서, 도 6d에 도시한 바와 같이, 유리 강화 단계(S50)에서는 열처리 또는 어닐링(annealing)에 의한 열강화에 의하여 제1 베이스 부재(112)를 구성하는 비강화 유리 기판을 강화 또는 반강화한다. 그때, 상평형을 맞추기 위하여 커버 형성층(1140)에 포함된 세라믹 프릿(1144), 색소(1142) 등이 강화 또는 반강화 유리 기판 내부로 혼입되면서 강화 또는 반강화 유리 기판의 일부를 구성하는 커버부(114)가 형성된다. 여기서, 커버 형성층(1140)은 질량비가 높아서 제1 베이스 부재(112)보다 큰 비중을 가질 수 있는데, 그러면 유리 강화 단계(S50)에서의 높은 온도에 의하여 커버 형성층(1140)이 융착되면서 끈적 끈적하게 되면서 유리 기판로 구성된 제1 베이스 부재(112)의 내부로 더 쉽게 혼입될 수 있다. Subsequently, as shown in FIG. 6D, in the glass strengthening step S50, the non-reinforced glass substrate constituting the first base member 112 is strengthened or semi-strengthened by thermal strengthening by heat treatment or annealing. At that time, the ceramic frit 1144, the pigment 1142, etc. included in the cover forming layer 1140 are mixed into the reinforced or semi-reinforced glass substrate to match the phase equilibrium, thereby forming a part of the reinforced or semi-reinforced glass substrate 114 is formed. Here, the cover forming layer 1140 may have a greater specific gravity than the first base member 112 due to a high mass ratio. Then, the cover forming layer 1140 is fused and sticky due to the high temperature in the glass reinforcing step (S50). As it is, it may be more easily incorporated into the interior of the first base member 112 made of a glass substrate.
유리 강화 단계(S50)에서는 비강화 유리 기판을 강화 또는 반강화할 수 있는 온도에서 수행될 수 있다. 일 예로, 유리 강화 단계(S50)의 열처리 온도는 500 내지 800℃(예를 들어, 500 내지 750℃, 일 예로, 650 내지 750℃)일 수 있으며, 고압 처리되지 않은 상태에서(일 예로, 상압 또는 상압보다 낮은 압력에서) 열처리될 수 있다. 예를 들어, 강화의 경우에는 5 내지 20 kPa, 반강화일 경우에는 4 kPa의 압력에서 열처리될 수 있다. 이때, 압력에 따라 열처리 시간을 조절할 수 있는데, 압력이 높으면 열처리 시간을 상대적으로 짧게 하고 압력이 낮으면 상대적으로 열처리 시간을 길게 할 수 있다. 그러나 본 발명이 유리 강화 단계(S50)의 온도, 압력, 시간 등에 한정되는 것은 아니다. In the glass strengthening step (S50), it may be performed at a temperature capable of strengthening or semi-strengthening the non-tempered glass substrate. As an example, the heat treatment temperature of the glass reinforcing step (S50) may be 500 to 800°C (for example, 500 to 750°C, for example, 650 to 750°C), and in a state that is not subjected to high pressure (for example, normal pressure Or at a pressure lower than normal pressure). For example, it may be heat-treated at a pressure of 5 to 20 kPa in the case of reinforcement and 4 kPa in the case of semi-reinforcement. At this time, the heat treatment time may be adjusted according to the pressure. If the pressure is high, the heat treatment time may be relatively short, and if the pressure is low, the heat treatment time may be relatively long. However, the present invention is not limited to the temperature, pressure, time, etc. of the glass strengthening step (S50).
일 예로, 유리 강화 단계(S50)에서 제1 베이스 부재(112)를 구성하는 비강화 유리 기판을 반강화할 수 있다. 이에 따라 제1 베이스 부재(112) 또는 제1 커버 부재(110)가 열강화된 반강화 유리 기판(배강도 유리)(heat strengthened glass)으로 구성될 수 있다. 이에 의하면 제1 커버 부재(110)의 투과율을 높게 유지할 수 있다. 여기서, 반강화 유리로 구성된 제1 커버 부재(110)는 표면 압축 응력이 60MPa 이하(예를 들어, 24 내지 52Mpa)일 수 있다. 일 예로, 제1 커버 부재(110)의 에지 응력이 약 30 내지 40MPa 일 수 있다. 즉, 이러한 반강화 유리는 연화점보다 다소 낮은 온도에서 열처리한 후에 서냉하여 형성될 수 있다. 참조로, 완전 강화 유리는 연화점보다 높은 온도에서 열처리한 후에 급냉하여 형성될 수 있는데, 표면 압축 응력이 70 내지 200MPa이다. For example, in the glass reinforcing step (S50), the non-reinforced glass substrate constituting the first base member 112 may be semi-reinforced. Accordingly, the first base member 112 or the first cover member 110 may be formed of a heat strengthened glass substrate (heat strengthened glass). Accordingly, the transmittance of the first cover member 110 can be maintained high. Here, the first cover member 110 made of semi-tempered glass may have a surface compressive stress of 60 MPa or less (eg, 24 to 52 MPa). For example, the edge stress of the first cover member 110 may be about 30 to 40 MPa. That is, the semi-tempered glass may be formed by slow cooling after heat treatment at a temperature slightly lower than the softening point. For reference, the fully tempered glass may be formed by quenching after heat treatment at a temperature higher than the softening point, and the surface compressive stress is 70 to 200 MPa.
이와 같이 본 실시예에서는 유리 강화 단계(S50)에서 열처리 온도, 냉각 속도 등을 조절하여 커버부(114)의 광 투과도를 높게 유지할 수 있다. 특히, 열처리 온도를 일정 범위 이내로 유지하면서 냉각 속도를 일정 수준 이하로 하여 커버부(114)가 비정질 상태의 유리 구조를 가지도록 하여 적외선 영역의 광에 대한 평균 광 투과도를 상대적으로 높게 유지할 수 있다. 이에 대해서는 추후에 좀더 상세하게 설명한다. 이와 달리 열처리 온도가 일정 범위 내로 유지되지 않거나 및/또는 냉각 속도나 압력이 지나치게 큰 경우에는 커버부인 산화물 세라믹 조성물의 화학 구조 변화로 비정질 유리 구조의 상변화 또는 유리 기판 사이의 계면 결합 변화로 적외선 영역의 광에 대한 평균 광 투과도가 가시광선 영역의 평균 광 투과도보다 높은 수준의 값을 가지기 어려울 수 있다. 그리고 열처리 온도가 일정 수준 미만(일 예로, 650℃ 미만)이면 커버부(114)가 베이스 부재(112)로부터 박리될 수 있는 가능성이 높아질 수 있고, 열처리 온도가 일정 수준을 초과(일 예로, 750℃ 초과)하면, 커버부(114)가 원하는 색상을 가지지 않거나 투과도 경향이 변하는 등 커버부(114)가 원하는 특성을 가지기 어려울 수 있다. As described above, in this embodiment, the light transmittance of the cover part 114 may be maintained high by adjusting the heat treatment temperature and cooling rate in the glass reinforcing step (S50). In particular, by keeping the heat treatment temperature within a certain range and lowering the cooling rate to a certain level so that the cover part 114 has an amorphous glass structure, the average light transmittance of light in the infrared region may be relatively high. This will be described in more detail later. In contrast, when the heat treatment temperature is not maintained within a certain range and/or the cooling rate or pressure is too high, the infrared region due to a change in the amorphous glass structure due to a change in the chemical structure of the oxide ceramic composition, which is a cover, or a change in the interface bonding between the glass substrate It may be difficult to have an average light transmittance of light of a higher level than the average light transmittance of the visible light region. And if the heat treatment temperature is less than a certain level (for example, less than 650°C), the possibility that the cover part 114 may be peeled off from the base member 112 may increase, and the heat treatment temperature exceeds a certain level (for example, 750 ℃), it may be difficult for the cover portion 114 to have desired characteristics, such as the cover portion 114 does not have a desired color or the transmittance tendency changes.
이어서, 마무리 단계(S60)에서는 유리 강화 단계(S50)가 수행된 제1 커버 부재(110)를 세정, 건조한다. 그러면, 일체화된 커버부(114)를 구비하는 제1 커버 부재(110)의 제조가 완료된다.Subsequently, in the finishing step S60, the first cover member 110 on which the glass reinforcing step S50 has been performed is washed and dried. Then, the manufacture of the first cover member 110 having the integrated cover portion 114 is completed.
이때, 세라믹 물질층, 커버 형성층(1140), 또는 커버부(114)는 나트륨 또는 칼륨의 함량이 제1 베이스 부재(112)의 나트륨 또는 칼륨의 함량과 유사하거나 이보다 낮을 수 있다. 특히, 세라믹 물질층, 커버 형성층(1140), 또는 커버부(114)는 나트륨 및 칼륨의 함량이 제1 베이스 부재(112)의 나트륨 및 칼륨의 함량보다 각기 낮을 수 있다. 일 예로, 세라믹 물질층, 커버 형성층(1140), 또는 커버부(114)가 나트륨 및 칼륨 각각을 10 X 1018개/cc 이하로 포함할 수 있다. 이와 반대로, 세라믹 물질층, 커버 형성층(1140), 또는 커버부(114)가 상술한 범위를 초과하여 나트륨 또는 칼륨을 포함하면, 누설전류에 의한 열화(potential-induced degradation, PID) 현상이 발생하여 태양 전지 패널(100)의 신뢰성이 저하될 수 있다. 그리고 세라믹 물질층, 커버 형성층(1140), 또는 커버부(114)가 납 및/또는 크롬(일 예로, 납 산화물 및/또는 크롬 산화물)을 포함하지 않아 환경 문제가 발생하지 않도록 할 수 있다. 일 예로, 세라믹 물질층, 커버 형성층(1140), 또는 커버부(114)에 포함된 나트륨, 칼륨, 납의 양은 이차이온질량분석(secondary ion mass spectrometry, SIMS) 등에 의하여 측정 또는 판별될 수 있다.In this case, the content of sodium or potassium in the ceramic material layer, the cover forming layer 1140, or the cover portion 114 may be similar to or lower than the sodium or potassium content of the first base member 112. In particular, the content of sodium and potassium in the ceramic material layer, the cover forming layer 1140, or the cover portion 114 may be respectively lower than the sodium and potassium content of the first base member 112. For example, the ceramic material layer, the cover forming layer 1140, or the cover portion 114 may contain sodium and potassium in an amount of 10×10 18 pieces/cc or less. Conversely, if the ceramic material layer, the cover forming layer 1140, or the cover part 114 contains sodium or potassium in excess of the above-described range, a potential-induced degradation (PID) phenomenon occurs due to leakage current. Reliability of the solar panel 100 may be deteriorated. In addition, since the ceramic material layer, the cover forming layer 1140, or the cover portion 114 does not contain lead and/or chromium (for example, lead oxide and/or chromium oxide), environmental problems may not occur. For example, the amount of sodium, potassium, and lead contained in the ceramic material layer, the cover forming layer 1140, or the cover portion 114 may be measured or determined by secondary ion mass spectrometry (SIMS).
이러한 제조 공정에 의하여 형성된 제1 커버 부재(110)는, 강화 또는 반강화 유리 기판으로 구성된 제1 베이스 부재(112)와, 강화 또는 반강화 유리 기판 내부에 세라믹 프릿(1144) 등을 포함하여 강화 또는 반강화 유리 기판의 일부를 구성하는 일체화된 부분으로 구성되는 커버부(114)를 포함할 수 있다. 즉, 커버부(114)는 제1 베이스 부재(112)를 구성하는 강화 또는 반강화 유리 기판의 일부로 구성되되 제1 베이스 부재(112)와 다른 물질(일 예로, 비정질 상태의 유리 구조를 가지는 세라믹 산화물 조성물)을 포함하는 부분일 수 있다. 이러한 커버부(114)는, 제1 베이스 부재(112)를 구성하는 유리 기판을 강화 또는 반강화하는 공정에서 세라믹 프릿(1144), 색소(1142) 등이 제1 베이스 부재(112)의 내부로 확산 및 침투하여 유리 기판의 물질과 혼합되어 형성될 수 있다. 이에 의하면, 커버부(114)가 제1 베이스 부재(112)과 일체화되어 형성되어 물리적 내구성 및 화학적 내구성이 우수할 수 있다.The first cover member 110 formed by such a manufacturing process is reinforced, including a first base member 112 composed of a reinforced or semi-tempered glass substrate, and a ceramic frit 1144 in a reinforced or semi-strengthened glass substrate. Alternatively, it may include a cover portion 114 composed of an integrated portion constituting a part of the semi-tempered glass substrate. That is, the cover part 114 is composed of a part of a reinforced or semi-reinforced glass substrate constituting the first base member 112, but a material different from the first base member 112 (for example, a ceramic having an amorphous glass structure). Oxide composition). In the process of reinforcing or semi-strengthening the glass substrate constituting the first base member 112, the cover portion 114, the ceramic frit 1144, the dye 1142, etc. to the inside of the first base member 112 It can be formed by diffusion and penetration and mixing with the material of the glass substrate. According to this, the cover portion 114 is formed integrally with the first base member 112, so that physical durability and chemical durability may be excellent.
본 실시예에서 커버부(114)는, 상술한 바와 같이, 비정질 상태의 유리 구조를 가지는 산화물 세라믹 조성물로 구성된다. 예를 들어, 커버부(114)는 세라믹 프릿(1144) 및/또는 색소(1142)에 포함된 복수의 금속과 비금속(일 예로, 산소)를 포함하는 금속 화합물(일 예로, 금속 산화물)을 복수로 포함하여 형성되어, 복수의 금속과 산소를 포함하는 불규칙 망목 구조를 가지는 산소 다면체, 유리 구조, 불규칙 망목 구조 등을 가질 수 있다. 커버부(114)가 산화물 세라믹 조성물 형태로 구비되었는지 여부는 광전자 분석(X-ray photoelectron spectroscopy, XPS) 등에 의하여 판별할 수 있다.In this embodiment, the cover portion 114 is composed of an oxide ceramic composition having an amorphous glass structure, as described above. For example, the cover part 114 includes a plurality of metal compounds (eg, metal oxides) including a plurality of metals and non-metals (eg, oxygen) included in the ceramic frit 1144 and/or the pigment 1142 It is formed to include, and may have an oxygen polyhedron having an irregular network structure including a plurality of metals and oxygen, a glass structure, an irregular network structure, and the like. Whether or not the cover portion 114 is provided in the form of an oxide ceramic composition can be determined by X-ray photoelectron spectroscopy (XPS) or the like.
이러한 비정질 상태의 유리 구조를 가지는 산화물 세라믹 조성물은 일반적인 산화물 세라믹을 형성하는 온도보다 낮은 온도에서 열처리되어 형성되어 비정질 상태의 유리 구조를 가질 수 있다. 즉, 비정질 상태의 유리 구조를 가지는 산화물 세라믹 조성물은 결정질 부분을 포함하지 않거나 부분적으로만 포함할 수 있다. 여기서, 비정질 상태의 유리 구조를 가지는 산화물 세라믹 조성물에는, 비정질 부분이 결정질 부분과 같거나 그보다 많이 포함될 수 있고, 특히, 비정질 부분이 결정질 부분보다 많이 포함될 수 있다. 일 예로, 비정질 상태의 유리 구조를 가지는 산화물 세라믹 조성물은 결정화도가 50% 이하(좀더 구체적으로, 50% 미만, 일 예로, 20% 이하)일 수 있다. 참조로, 기존에 사용하던 일반적인 산화물 세라믹이라 함은 이온 결합, 공유 결합, 또는 이들의 결합이 혼재된 산화물로서 고온 및 고압에서 생성된 무기질 비금속 재료를 의미한다. 이러한 산화물 세라믹은 850℃ 이상(예를 들어, 1400℃ 부근)의 높은 온도, 그리고 높은 압력 하에서 열처리되어 대부분이 결정화된 상태를 가진다.The oxide ceramic composition having such an amorphous glass structure may be formed by heat treatment at a temperature lower than a temperature for forming a general oxide ceramic to have an amorphous glass structure. That is, the oxide ceramic composition having an amorphous glass structure may not include a crystalline portion or may include only partially. Here, in the oxide ceramic composition having an amorphous glass structure, the amorphous portion may be the same as or more than the crystalline portion, and in particular, the amorphous portion may be included more than the crystalline portion. For example, the oxide ceramic composition having an amorphous glass structure may have a crystallinity of 50% or less (more specifically, less than 50%, for example, 20% or less). For reference, the conventional oxide ceramic refers to an inorganic non-metallic material produced at high temperature and high pressure as an oxide in which ionic bonds, covalent bonds, or bonds thereof are mixed. These oxide ceramics are heat-treated under a high temperature of 850° C. or higher (eg, around 1400° C.) and high pressure to have a crystallized state.
이러한 커버부(114)는 세라믹 프릿(1144)을 기본 물질(일 예로, 가장 많이 포함된 물질, 50 중량부 이상으로 포함된 물질)로 포함할 수 있다. 그리고 커버부(114)는, 필요에 따라 첨가된 색소(1142), 첨가제 등을 더 포함할 수 있다. 그리고 유리 강화 단계(S50)에서의 열처리 시 수지(1146)가 휘발될 수 있으므로 커버부(114)는 수지(1146)를 포함하지 않거나 포함하지 않을 수 있다. 커버부(114)에 색소(1142)가 포함되는 경우에도 커버부(114)의 세라믹 프릿(1144)과 색소(1142)의 구별이 명확하지 않을 수 있다. 예를 들어, 색소(1142)로 포함된 물질의 금속이 세라믹 프릿(1144)을 구성하는 산소 다면체, 유리 구조, 불규칙 망목 구조 등의 금속으로 포함된 형태로 존재할 수 있다. 이와 같이 커버부(114)에 포함된 세라믹 프릿(1144) 등은 다양한 성분 분석 방법(예를 들어, 주사전자현미경-에너지 분산형 분광 분석법(SEM-EDX) 등)에 의하여 판별될 수 있다.The cover part 114 may include the ceramic frit 1144 as a basic material (for example, a material included most, a material included in an amount of 50 parts by weight or more). In addition, the cover portion 114 may further include a pigment 1142, an additive, etc. added as necessary. In addition, since the resin 1146 may be volatilized during the heat treatment in the glass reinforcing step (S50), the cover portion 114 may or may not include the resin 1146. Even when the dye 1142 is included in the cover part 114, the distinction between the ceramic frit 1144 and the dye 1142 of the cover part 114 may not be clear. For example, the metal of the material included as the pigment 1142 may exist in a form including metal such as an oxygen polyhedron constituting the ceramic frit 1144, a glass structure, and an irregular network structure. In this way, the ceramic frit 1144 included in the cover part 114 may be determined by various component analysis methods (eg, scanning electron microscope-energy dispersive spectroscopy (SEM-EDX), etc.).
본 실시예에 따른 제1 커버 부재(110)는 커버부(114)에 의하여 원하는 외관을 구현할 수 있다. 예를 들어, 커버부(114)의 색상, 물질, 면적 비율, 두께 등, 또는 커버부(114)에 포함되는 세라믹 프릿(1144), 색소(1142) 등의 물질, 크기, 농도, 밀집도 등을 조절하여 제1 커버 부재(110)의 외관 및 투과율을 조절할 수 있다. 본 실시예에서는 커버부(114)는 제1 베이스 부재(112)보다는 낮지만 일정한 광 투과도를 가져 태양광의 일부를 투과시킬 수 있다. 그러면, 커버부(114)를 통하여서도 태양광이 투과될 수 있어, 커버부(114)에 의한 광 손실을 방지 또는 최소화할 수 있다. 일 예로, 커버부(114) 또는 이를 구비하는 제1 커버 부재(110)가 380nm 내지 1200nm의 파장을 가지는 광에 대한 광 투과도가 10% 이상(일 예로, 10% 내지 95%, 좀더 구체적으로, 20% 내지 95%)일 수 있다. 그러나 본 발명이 이에 한정되는 것은 아니다. 따라서 커버부(114)의 색상, 물질, 형성 면적 등에 따라 광 투과도가 다양한 값을 가질 수 있다. The first cover member 110 according to the present embodiment may implement a desired appearance by the cover portion 114. For example, the color, material, area ratio, thickness, etc. of the cover part 114, or the material, size, concentration, density, etc. of the ceramic frit 1144 and the pigment 1142 included in the cover part 114 By adjusting the appearance and transmittance of the first cover member 110 can be adjusted. In this embodiment, the cover portion 114 is lower than that of the first base member 112, but has a certain light transmittance and may transmit a part of sunlight. Then, sunlight can be transmitted through the cover portion 114 as well, so that light loss due to the cover portion 114 can be prevented or minimized. For example, the cover part 114 or the first cover member 110 having the same has a light transmittance of 10% or more for light having a wavelength of 380 nm to 1200 nm (for example, 10% to 95%, more specifically, 20% to 95%). However, the present invention is not limited thereto. Accordingly, the light transmittance may have various values depending on the color, material, and formation area of the cover part 114.
또한, 본 실시예에 따른 커버부(114)는 산화물 세라믹 조성물(특히, 비정질 상태의 유리 구조를 가지는 산화물 세라믹 조성물)로 구성되어 파장에 따른 특정한 광 투과도 형태, 기포(114V), 표면 거칠기 등을 가져 커버부(114)에 의하여 광 투과도가 다소 낮아지더라도 태양 전지 패널(100)의 출력이 저하되는 것을 방지 또는 최소화할 수 있다. 이를 도 3과 함께 도 7 내지 도 11을 참조하여 상세하게 설명한다. In addition, the cover portion 114 according to the present embodiment is made of an oxide ceramic composition (especially, an oxide ceramic composition having an amorphous glass structure), so that a specific light transmittance shape, bubbles (114V), surface roughness, etc. Thus, even if the light transmittance is slightly lowered by the cover part 114, it is possible to prevent or minimize the output of the solar panel 100 from being lowered. This will be described in detail with reference to FIGS. 7 to 11 along with FIG. 3.
도 7은 본 발명의 실시예에 따른 태양 전지 패널(100)에 포함되는 커버부(114)의 파장에 따른 광 투과도를 색상에 따라 도시한 그래프이다. 도 8은 파장에 따른 단결정 실리콘을 기반으로 하는 태양 전지(150)의 스펙트럼 응답을 도시한 그래프이고, 도 9는 파장에 따른 단결정 실리콘을 기반으로 하는 태양 전지(150)의 양자 효율을 도시한 그래프이다. 도 10는 본 발명의 실시예에 따른 태양 전지 패널(100)에 포함되는 제1 커버 부재(110)의 예들을 촬영한 주사전자현미경 사진이다. 7 is a graph showing light transmittance according to a wavelength of a cover part 114 included in the solar panel 100 according to an embodiment of the present invention according to color. 8 is a graph showing the spectral response of the solar cell 150 based on single crystal silicon according to the wavelength, and FIG. 9 is a graph showing the quantum efficiency of the solar cell 150 based on single crystal silicon according to the wavelength to be. 10 is a scanning electron microscope photograph of examples of the first cover member 110 included in the solar panel 100 according to an embodiment of the present invention.
본 실시예에서는, 도 7에 도시한 바와 같이, 비정질 상태의 유리 구조를 가지는 산화물 세라믹 조성물로 구성된 커버부(114)에서는, 적외선 영역의 광에 대한 평균 광 투과도인 제1 투과도가 가시광선 영역의 광에 대한 평균 광 투과도인 제2 투과도와 같거나 그보다 더 크다. 특히, 비정질 상태의 유리 구조를 가지는 산화물 세라믹 조성물로 구성된 커버부(114)는, 제1 투과도가 제2 투과도보다 클 수 있다. 그리고 비정질 상태의 유리 구조를 산화물 세라믹 조성물로 구성된 커버부(114)는, 적외선 영역 및 가시광선 영역의 광 각각에 대한 평균 광 투과도인 제1 및 제2 투과도보다 자외선 영역의 광에 대한 평균 광 투과도인 제3 투과도가 더 작을 수 있다. 여기서, 자외선 영역의 광은 100nm 내지 380nm의 파장을 가지는 광, 가시광선 영역의 광은 380nm 내지 760nm의 파장을 가지는 광, 적외선 영역의 광은 760nm 내지 1200nm의 파장을 가지는 광으로 정의될 수 있다. 그리고 평균 광 투과도는 제1 베이스 부재(112)의 광 투과도를 반영하지 않도록 정규화된 광 투과도(normalized transmittance)의 평균으로 정의될 수 있다. In this embodiment, as shown in FIG. 7, in the cover portion 114 made of an oxide ceramic composition having an amorphous glass structure, the first transmittance, which is the average light transmittance for light in the infrared region, is in the visible region. It is equal to or greater than the second transmittance, which is the average light transmittance for light. In particular, the cover portion 114 made of an oxide ceramic composition having an amorphous glass structure may have a first transmittance greater than a second transmittance. In addition, the cover portion 114 composed of an oxide ceramic composition having an amorphous glass structure has an average light transmittance for light in the ultraviolet region than the first and second transmittances for each of the infrared and visible light. Phosphorus third transmittance may be smaller. Here, light in the ultraviolet region may be defined as light having a wavelength of 100 nm to 380 nm, light in the visible region may be defined as light having a wavelength of 380 nm to 760 nm, and light in the infrared region may be defined as light having a wavelength of 760 nm to 1200 nm. In addition, the average light transmittance may be defined as an average of normalized transmittance so as not to reflect the light transmittance of the first base member 112.
도 7에 도시한 바와 같이 색상에 따라 차이가 있으나 제2 투과도가 제3 투과도보다 크고, 제1 투과도가 제2 투과도와 같거나 그보다 큰 경향성은 그대로 유지하는 것을 알 수 있다. 이러한 경향성은 유리 강화 단계(S50)에서의 열처리 온도, 냉각 속도 등에 의하여 구현될 수 있다. As shown in FIG. 7, although there is a difference according to color, it can be seen that the tendency of the second transmittance to be greater than the third transmittance and the first transmittance to be equal to or greater than the second transmittance remains as it is. This tendency may be implemented by the heat treatment temperature and cooling rate in the glass reinforcing step (S50).
상술한 바와 같이 제1 투과도가 제2 투과도와 같거나 그보다 크면, 커버부(114)가 구비되어도 제1 커버 부재(110)를 통과하여 태양 전지(150)에 도달하는 광 중에서 적외선 영역의 광의 양이 가시광선 영역의 광의 양과 같거나 그보다 클 수 있다. 이에 따라 커버부(114)에 의하여 광 투과도가 다소 저하되는 경우에도 적외선 영역의 광이 태양 전지(150)에 많이 도달하여 이를 효과적으로 사용할 수 있다. 이에 따라 커버부(114)에 의하여 광 투과도가 다소 저하되어도 태양 전지(150)의 광전 변환 효율 또는 태양 전지 패널(100)의 출력이 저하되는 것이 방지 또는 최소화될 수 있다. As described above, if the first transmittance is equal to or greater than the second transmittance, the amount of light in the infrared region among the light passing through the first cover member 110 and reaching the solar cell 150 even if the cover part 114 is provided. It may be equal to or greater than the amount of light in this visible region. Accordingly, even when the transmittance of light is slightly lowered by the cover part 114, a large amount of light in the infrared region reaches the solar cell 150 and can be used effectively. Accordingly, even if the light transmittance is slightly lowered by the cover part 114, the photoelectric conversion efficiency of the solar cell 150 or the output of the solar cell panel 100 may be prevented or minimized from being lowered.
그리고 상술한 바와 같이 제1 및 제2 투과도가 각기 제3 투과도보다 클 수 있다. 이는 커버부(114)가 세라믹 프릿(1144), 색소(1142), 첨가제 등을 포함하여 유리 기판으로 구성된 제1 베이스 부재(112)보다 높은 굴절률을 가지며 물질에 따라 유리 기판으로 구성된 제1 베이스 부재(112)보다 높은 흡광 계수를 가지기 때문이다. 자외선 영역의 광은 태양 전지(150)의 광전 변환 효율, 그리고 태양 전지 패널(100)의 출력에 기여하는 바가 크지 않고, 높은 광자 에너지(photon energy)를 가져 태양 전지(150), 밀봉재(130) 등의 변형, 특성 변화 등을 일으킬 수 있다. 본 실시예에서는 커버부(114)가 자외선 영역의 광을 산란, 차단, 또는 흡수하여, 자외선 영역의 광의 광 투과도를 낮추는 역할을 한다. 이에 따라 태양 전지(150)의 광전 변환 효율, 태양 전지 패널(100)의 출력에는 큰 영향을 미치지 않으면서 자외선에 의하여 발생할 수 있는 태양 전지(150), 밀봉재(130) 등의 변형, 특성 변화 등을 최소화할 수 있다. In addition, as described above, the first and second transmittances may be greater than the third transmittance, respectively. This is because the cover part 114 has a refractive index higher than that of the first base member 112 composed of a glass substrate including ceramic frit 1144, a pigment 1142, and additives, and a first base member composed of a glass substrate depending on the material. This is because it has an extinction coefficient higher than (112). Light in the ultraviolet region does not have a large contribution to the photoelectric conversion efficiency of the solar cell 150 and the output of the solar panel 100, and has high photon energy, so the solar cell 150 and the sealing material 130 It can cause deformation of the back, change of characteristics, etc. In this embodiment, the cover part 114 serves to reduce the transmittance of light in the ultraviolet region by scattering, blocking, or absorbing light in the ultraviolet region. Accordingly, the photoelectric conversion efficiency of the solar cell 150, the deformation of the solar cell 150, the sealing material 130, etc., which may be generated by ultraviolet rays without having a large influence on the output of the solar cell panel 100, change in characteristics, etc. Can be minimized.
예를 들어, 본 실시예에서 커버부(114)는, 제1 투과도가 제2 투과도보다 2% 이상 더 클 수 있다. 또는, 제1 투과도와 제2 투과도 사이의 제1 차이가 제2 투과도와 제3 투과도 사이의 제2 차이보다 클 수 있다. 이러한 경우에 태양 전지 패널(100)에서 적외선 영역의 광을 좀더 효과적으로 사용할 수 있다. 상술한 광 투과도는 다양한 방법에 의하여 측정될 수 있는데, 수직광의 투과도(정상 투과도)(normal transmittance)와 산란광의 투과도(확산 투과도)(diffused transmittance)를 모두 측정할 수 있는 방법으로 측정될 수 있다. 예를 들어, ISO 9050:2003, BS EN 14500:2008 등과 같은 표준 측정 방법에 의하여 광 투과도를 측정할 수 있다.For example, in the present embodiment, the cover part 114 may have a first transmittance greater than the second transmittance by 2% or more. Alternatively, the first difference between the first transmittance and the second transmittance may be greater than the second difference between the second transmittance and the third transmittance. In this case, the solar panel 100 may more effectively use light in the infrared region. The above-described light transmittance may be measured by various methods, and it may be measured by a method capable of measuring both the transmittance of vertical light (normal transmittance) and the transmittance of scattered light (diffused transmittance). For example, the light transmittance can be measured by a standard measurement method such as ISO 9050:2003, BS EN 14500:2008, and the like.
도 8을 참조하면, 적외선 영역의 광에서 단결정 실리콘을 기반으로 하는 태양 전지(150)의 스펙트럼 응답(즉, 광의 특정 파장에서 생성되는 단락 전류 밀도(Isc) 또는 출력)이 높은 것을 알 수 있다. 그리고 도 9를 참조하면, 적외선 영역의 광에서 단결정 실리콘을 기반으로 하는 태양 전지(150)의 양자 효율이 높은 것을 알 수 있다. 본 실시예에서는 이와 같이 높은 스펙트럼 응답 및 양자 효율을 가지는 적외선 영역에서의 광의 평균 광 투과도를 향상하여, 특정한 색상, 느낌, 질감 등을 구현하는 커버부(114)에 의하여 광 투과도가 다소 저하되는 경우에도 적외선 영역의 광을 효과적으로 사용할 수 있다. 이에 의하여 커버부(114)가 형성되어도 태양 전지(150)의 광전 변환 효율 또는 태양 전지 패널(100)의 출력이 높은 값을 유지할 수 있다. 자외선 영역의 광은 스펙트럼 응답 및 양자 효율이 매우 낮은 값을 가지므로 커버부(114)의 제3 투과도가 낮아도 이에 따른 태양 전지(150)의 광전 변환 효율 또는 태양 전지 패널(100)의 출력에는 큰 영향을 미치지 않는다. Referring to FIG. 8, it can be seen that the spectral response (ie, short-circuit current density (Isc) or output generated at a specific wavelength of light) of the solar cell 150 based on single crystal silicon in light in the infrared region is high. Also, referring to FIG. 9, it can be seen that the quantum efficiency of the solar cell 150 based on single crystal silicon is high in light in the infrared region. In the present embodiment, when the average light transmittance of light in the infrared region having a high spectral response and quantum efficiency is improved as described above, the light transmittance is slightly lowered by the cover part 114 implementing a specific color, feel, texture, etc. Even light in the infrared region can be used effectively. Accordingly, even when the cover portion 114 is formed, the photoelectric conversion efficiency of the solar cell 150 or the output of the solar cell panel 100 can be maintained at a high value. Since light in the ultraviolet region has a very low spectral response and quantum efficiency, the photoelectric conversion efficiency of the solar cell 150 or the output of the solar panel 100 according to the third transmittance of the cover portion 114 is low. Does not affect
그리고 본 실시예에서 커버부(114)가 기포(114V)를 구비하여 다공성을 가질 수 있다. 커버부(114)를 형성하기 위한 열처리 공정(일 예로, 유리 강화 공정(S40))에서 세라믹 물질층 또는 커버 형성층(1140)에 구비된 수지(1146)가 휘발하여 해당 부분에 기포(114V)가 잔류할 수 있다. In addition, in this embodiment, the cover portion 114 may have air bubbles 114V to have porosity. In a heat treatment process for forming the cover part 114 (for example, in the glass reinforcing process (S40)), the ceramic material layer or the resin 1146 provided in the cover forming layer 1140 volatilizes and bubbles (114V) are formed in the corresponding part. Can remain.
일 예로, 0.1um 이상의 크기를 가지는 기포(114V)가 구비될 수 있다. 이러한 기포(114V)의 크기에서 기포(114V)에 의한 효과를 최대화할 수 있다. 기포(114V)의 크기는 커버부(114)의 형성 방법에 따라 달라질 수 있다. 예를 들어, 잉크젯 프린팅에 의하여 형성된 커버부(114)에는 0.1um 이상의 크기를 가지는 기포(114V)가 구비될 수 있고, 스크링 프린팅에 의하여 형성된 커버부(114)에는 0.5um 이상의 크기를 가지는 기포(114V)가 구비될 수 있다. 이러한 기포(114V)의 최대 크기는 커버부(114)의 두께에 해당할 수 있다. 예를 들어, 기포(114V)가 0.1um 내지 15um의 크기를 가질 수 있고, 좀더 구체적으로 잉크젯 프린팅에 의하여 형성된 커버부(114)에서 기포(114V)가 0.1 내지 7um의 크기를 가질 수 있고 스크린 프린팅에 의하여 형성된 커버부(114)에서 기포(114V)가 0.5um 내지 15um의 크기를 가질 수 있다. 예를 들어, 평면에서 볼 때 기포(114V)의 총 면적 비율이 4% 이상일 수 있다. 일 예로, 잉크젯 프린팅에 의하여 형성된 커버부(114)에서 기포(114V)의 총 면적 비율이 4% 이상, 스크린 프린팅에 의하여 형성된 커버부(114)에서 기포(114V)의 총 면적 비율이 7.5% 이상일 수 있다. As an example, bubbles 114V having a size of 0.1 μm or more may be provided. In the size of the bubbles 114V, the effect of the bubbles 114V can be maximized. The size of the air bubbles 114V may vary depending on the method of forming the cover portion 114. For example, a bubble 114V having a size of 0.1 μm or more may be provided in the cover portion 114 formed by inkjet printing, and a bubble having a size of 0.5 μm or more in the cover portion 114 formed by scroll printing. (114V) may be provided. The maximum size of the air bubbles 114V may correspond to the thickness of the cover portion 114. For example, the bubble (114V) may have a size of 0.1um to 15um, and more specifically, the bubble (114V) in the cover portion 114 formed by inkjet printing may have a size of 0.1 to 7um, and screen printing The air bubbles 114V in the cover portion 114 formed by this may have a size of 0.5um to 15um. For example, when viewed in a plan view, the total area ratio of the air bubbles 114V may be 4% or more. For example, if the total area ratio of the bubbles 114V in the cover portion 114 formed by inkjet printing is 4% or more, and the total area ratio of the bubbles 114V in the cover portion 114 formed by screen printing is 7.5% or more I can.
상술한 기포(114V)의 크기, 면적 비율 등은 세라믹 물질층, 커버 형성층(1140), 또는 커버부(114)(또는, 이들에 포함된 색소(1142), 세라믹 프릿(1144), 수지(1146) 등)의 물질, 세라믹 물질층, 커버 형성층(1140), 또는 커버부(114)의 제조 방법, 공정 조건 등에 달라질 수 있다. 도 10의 (a)에 잉크젯 프린팅에 의하여 형성된 커버부(114)를 가지는 제1 커버 부재(110)의 단면 사진을 첨부하였고, 도 10의 (b) 및 (c)에 스크린 프린팅에 의하여 형성된 커버부(114)를 포함하는 제1 커버 부재(110)의 단면 사진 및 평면 사진을 첨부하였다. 도 10에 도시한 바와 같이 커버부(114)의 전체적으로 일정 크기 이상의 기포(114V)가 분포되어 있음을 알 수 있다. The size and area ratio of the above-described bubbles 114V are the ceramic material layer, the cover forming layer 1140, or the cover portion 114 (or the dye 1142, ceramic frit 1144), and the resin 1146 contained therein. ), etc.), a ceramic material layer, a cover forming layer 1140, or a manufacturing method of the cover portion 114, a process condition, and the like. A cross-sectional photograph of the first cover member 110 having the cover portion 114 formed by inkjet printing is attached to (a) of FIG. 10, and the cover formed by screen printing in (b) and (c) of FIG. 10 A cross-sectional photograph and a plan photograph of the first cover member 110 including the portion 114 are attached. As shown in FIG. 10, it can be seen that air bubbles 114V of a predetermined size or more are distributed throughout the cover part 114.
이와 같이 커버부(114)의 내부에 기포(114V)가 존재하면, 도 11에 도시한 바와 같이, 태양 전지 패널(100)로 입사되는 광이 기포(114V)에서 분산되어 넓게 확산된다. 좀더 구체적으로, 커버부(114)가 기포(114V)를 구비하면 정상 투과(diffused transmittance)와 확산 투과(diffused transmittance)가 함께 일어나서 반구형 투과(hemispherical transmittance)가 일어난다. 이때, 도 11의 실선으로 도시한 바와 같이, 커버부(114)의 기포(114V)가 태양 전지 패널(100)의 내부로 입사되는 반구형 투과 형태를 가지도록 광을 산란시킬 수 있다. 그러면, 태양 전지(150) 사이의 영역으로 향하여 소실될 수 있는 광의 일부를 태양 전지(150)로 향하게 하여 사용하거나, 커버부(114)와 베이스 부재(112)의 계면에 의한 재사용할 수 있다. 이에 따라 커버부(114)가 구비되는 경우에도 광전 변환에 사용되는 광의 양을 최대화하여 태양 전지(150)의 광전 변환 효율 및 태양 전지 패널(100)의 출력을 높게 유지할 수 있다. 일 예로, 커버부(114)는 태양 전지(150)의 사이 영역에 대응하는 부분에 적어도 일부가 위치할 수 있다. 그리고 도 11의 일점 쇄선으로 도시한 바와 같이, 커버부(114)의 기포(114V)가 태양 전지 패널(100)의 외부 쪽으로 반구형 투과 형태를 가지도록 광을 산란시켜 눈부심 방지(anti-glare) 특성을 향상할 수 있다. 반면, 커버부(114)가 기포(114V)를 가지지 않는 경우에는 기포(114V)를 가지는 경우에 비하여 확산 투과가 충분하게 일어나지 않아 상대적으로 낮은 광 투과율을 가질 수 있다. In this way, when the air bubbles 114V exist inside the cover part 114, as shown in FIG. 11, light incident on the solar panel 100 is dispersed from the air bubbles 114V and diffuses widely. More specifically, when the cover portion 114 includes the air bubbles 114V, a diffused transmittance and a diffused transmittance occur together, resulting in a hemispherical transmittance. In this case, as shown by the solid line of FIG. 11, light may be scattered so that the air bubbles 114V of the cover portion 114 have a hemispherical transmission shape incident into the interior of the solar panel 100. Then, a part of the light that may be lost toward the area between the solar cells 150 may be used by directing it to the solar cell 150 or reused by the interface between the cover part 114 and the base member 112. Accordingly, even when the cover unit 114 is provided, the amount of light used for photoelectric conversion can be maximized to maintain the photoelectric conversion efficiency of the solar cell 150 and the output of the solar panel 100 high. As an example, at least a part of the cover part 114 may be located in a portion corresponding to an area between the solar cells 150. And, as shown by the dashed-dotted line of FIG. 11, the air bubbles 114V of the cover portion 114 scatter light to have a hemispherical transmission shape toward the outside of the solar panel 100 to prevent glare (anti-glare). Can improve. On the other hand, when the cover portion 114 does not have the air bubbles 114V, the diffusion transmission may not occur sufficiently compared to the case with the air bubbles 114V, and thus may have a relatively low light transmittance.
그리고 본 실시예에서 커버부(114)가 형성된 부분에서 제1 베이스 부재(112)와 커버부(114)의 경계 부분(즉, 커버부(114)의 계면)의 표면 거칠기가 커버부(114)가 형성되지 않은 제1 베이스 부재(112)의 다른 부분의 표면 거칠기보다 클 수 있다. 즉, 도 3의 확대원에서 도시한 바와 같이, 제1 커버 부재(110)에서 커버부(114)와 제1 베이스 부재(112)의 일면이 구성하는 경계 부분의 표면 거칠기가 제1 베이스 부재(112)의 타면 또는 측면의 표면 거칠기보다 클 수 있다. 이는 커버부(114)가 형성될 때 세라믹 프릿(1144), 색소(1142) 등이 제1 베이스 부재(112)의 내부로 혼입되거나 그 외 상평형을 위하여 물질 등이 이동하면서 제1 베이스 부재(112)와의 계면 부분에서 표면 거칠기가 상대적으로 커질 수 있기 때문이다. In this embodiment, the surface roughness of the boundary portion between the first base member 112 and the cover portion 114 (that is, the interface of the cover portion 114) in the portion where the cover portion 114 is formed is the cover portion 114 It may be greater than the surface roughness of the other portion of the first base member 112 is not formed. That is, as shown in the enlarged circle of FIG. 3, the surface roughness of the boundary portion formed by the cover portion 114 and one surface of the first base member 112 in the first cover member 110 is the first base member ( 112) may be larger than the surface roughness of the other or side surfaces. This is because when the cover part 114 is formed, the ceramic frit 1144, the dye 1142, etc. are mixed into the inside of the first base member 112, or the material moves for the other phase equilibrium while the first base member ( This is because the surface roughness may be relatively large at the interface with 112).
일 예로, 도 3에서는 커버부(114)가 형성되지 않은 타면에 광 확산부(LD)가 위치하는 것을 도시하였다. 광 확산부(LD)는 광을 확산시켜 태양 전지(150) 등의 인식을 최대한 방지하고 커버부(114)에 의한 색상 등의 통일성을 개선할 수 있다. 일 예로, 광 확산부(LD)가 밀봉재(130)에 접하여 형성되면 밀봉재(130)와의 접착 면적의 증가시켜 접착력을 향상하는 역할을 할 수 있다. 예를 들어, 광 확산부(LD)가 10 내지 500um의 크기를 가질 수 있으며, 라운드진 형상(일 예로, 구형의 일부에 대응하는 형상), 각진 형상, 피라미드 형상 등 다양한 형상을 가질 수 있다. 상술한 광 확산부(LD)는 양각 형상으로 돌출된 형상을 가질 수 있고, 음각 형상으로 오목한 형상을 가질 수도 있다. For example, in FIG. 3, it is illustrated that the light diffusion part LD is located on the other surface where the cover part 114 is not formed. The light diffusion unit LD diffuses light to prevent recognition of the solar cell 150 as much as possible, and improves uniformity such as color by the cover unit 114. For example, when the light diffusion part LD is formed in contact with the sealing material 130, it may serve to improve adhesion by increasing an adhesion area with the sealing material 130. For example, the light diffusion unit LD may have a size of 10 to 500 μm, and may have various shapes such as a rounded shape (eg, a shape corresponding to a part of a sphere), an angled shape, and a pyramid shape. The above-described light diffusion unit LD may have a protruding shape in an embossed shape, or may have a concave shape in an intaglio shape.
이때, 광 확산부(LD)의 크기가 커버부(114)가 형성된 경계 부분의 표면 거칠기와 같거나 그보다 클 수 있다(일 예로, 클 수 있다). 여기서, 광 확산부(LD)의 크기라 함은 광 확산부(LD)의 최상단과 최하단 사이의 거리를 의미할 수 있다. 이에 의하여 광 확산부(LD)에 의한 확산 효과를 향상할 수 있다. 그리고 커버부(114)가 형성된 경계 부분의 표면 거칠기가 광 확산부(LD)의 표면 거칠기와 같거나 그보다 클 수 있다(일 예로, 클 수 있다). 여기서 광 확산부(LD)의 표면 거칠기는 광 확산부(LD)의 형상을 구성하는 외부 표면에서의 표면 거칠기를 의미할 수 있다. 이는 광 확산부(LD)는 일정한 형상을 가지도록 특정한 가공 공정을 거쳐서 형성된 것이기 때문에 광 확산부(LD)의 외부 표면이 상대적으로 작은 표면 거칠기를 가지기 때문이다.In this case, the size of the light diffusion part LD may be equal to or greater than the surface roughness of the boundary portion in which the cover part 114 is formed (for example, it may be larger). Here, the size of the light diffusion unit LD may mean a distance between the uppermost end and the lowermost end of the light diffusion unit LD. Accordingly, the diffusion effect by the light diffusion unit LD may be improved. In addition, the surface roughness of the boundary portion in which the cover portion 114 is formed may be equal to or greater than the surface roughness of the light diffusion unit LD (for example, it may be greater). Here, the surface roughness of the light diffusion unit LD may mean a surface roughness on the outer surface constituting the shape of the light diffusion unit LD. This is because the light diffusion unit LD has a relatively small surface roughness since the light diffusion unit LD is formed through a specific processing process to have a certain shape.
그리고 도 3 등에서는 커버부(114)의 외부 표면을 편평하게 도시하였으나, 본 발명이 이에 한정되는 것은 아니다. 커버부(114)과 제1 베이스 부재(112)의 경계 부분의 요철, 굴곡부 등에 대응하도록 커버부(114)의 외부 표면이 요철, 굴곡부 등을 구비할 수 있고, 커버부(114)의 외부 표면이 커버부(114)과 제1 베이스 부재(112)의 경계 부분의 표면 거칠기와 동일 또는 유사한 표면 거칠기를 가져 제1 베이스 부재(112)의 다른 부분의 표면 거칠기보다 클 수 있다.In addition, in FIG. 3 and the like, the outer surface of the cover portion 114 is illustrated to be flat, but the present invention is not limited thereto. The outer surface of the cover portion 114 may have irregularities, bent portions, etc. so as to correspond to irregularities and bent portions of the boundary portion between the cover portion 114 and the first base member 112, and the outer surface of the cover portion 114 The surface roughness of the boundary portion between the cover portion 114 and the first base member 112 may have the same or similar surface roughness to that of the other portions of the first base member 112.
이와 같은 커버부(114)의 계면에서의 높은 표면 거칠기에 의하여 커버부(114)가 광의 산란을 효과적으로 유도할 수 있다. 즉, 커버부(114) 내의 기포(114V)와 커버부(114)의 계면에서 높은 표면 거칠기가 함께 구비되면, 광의 산란을 효과적으로 유도할 수 있다. 특히, 태양 전지들(150) 사이에 대응하는 부분(즉, 비유효 영역(NA))에 커버부(114)가 위치하면, 커버부(114)에서의 산란에 의한 광이 태양 전지(150)로 향하여 광전 변환에 사용될 수 있다. 이에 따라 태양 전지(150)의 광전 변환 효율 및 태양 전지 패널(100)의 출력을 높게 유지할 수 있다. Due to such a high surface roughness at the interface of the cover portion 114, the cover portion 114 can effectively induce light scattering. That is, when high surface roughness is provided at the interface between the air bubbles 114V in the cover portion 114 and the cover portion 114, it is possible to effectively induce light scattering. In particular, when the cover portion 114 is located in the corresponding portion between the solar cells 150 (that is, the non-effective area (NA)), the light by scattering from the cover portion 114 is the solar cell 150 Can be used for photoelectric conversion. Accordingly, the photoelectric conversion efficiency of the solar cell 150 and the output of the solar cell panel 100 can be maintained high.
상술한 커버부(114)는 제1 베이스 부재(112) 또는 밀봉재(130)보다 큰 굴절률(일 예로, 1.48 이상의 굴절률)을 가질 수 있다. 그리고 커버부(114)는 1um 이상(일 예로, 1um 내지 15um)의 두께를 가질 수 있다. 커버부(114)의 제조 공정에 따라 커버부(114)의 두께가 달라질 수 있다. 예를 들어, 커버부(114)가 스크링 프린팅으로 형성된 경우에는 1um 내지 15um의 두께를 가질 수 있고, 잉크젯 프린팅으로 형성된 경우에는 1um 내지 7um의 두께를 가질 수 있다. 커버부(114)의 두께가 1um 미만이면, 원하는 외관을 구현하는데 어려움이 있을 수 있고 색소(1142)를 포함하는 경우에 색소(1142)의 밀집도가 저하되어 원하는 색상을 나타내기 어려울 수 있다. 커버부(114)의 두께가 15um(일 예로, 7um)를 초과하면, 광 투과도가 전체적으로 저하될 수 있으며 커버부(114)의 박리, 균열 등의 현상이 발생할 수 있다. 일 예로, 커버부(114)의 제조 공정을 단순화하고 재료 비용을 절감하기 위하여 커버부(114)의 두께가 1um 내지 3um(일 예로, 1um 내지 2um)일 수 있으나, 본 발명이 이에 한정되는 것은 아니다. 또한, 색상에 따라 커버부(114)의 두께를 조절할 수 있는데, 일 예로, 커버부(114)가 상대적으로 낮은 광 투과도를 가지는 백색을 가지는 경우에는 다른 색상의 커버부(114)보다 작은 두께를 가질 수 있다.The above-described cover part 114 may have a greater refractive index (for example, a refractive index of 1.48 or more) than the first base member 112 or the sealing material 130. In addition, the cover portion 114 may have a thickness of 1 μm or more (for example, 1 μm to 15 μm). The thickness of the cover part 114 may vary according to the manufacturing process of the cover part 114. For example, when the cover portion 114 is formed by scroll printing, it may have a thickness of 1um to 15um, and when formed by inkjet printing, it may have a thickness of 1um to 7um. If the thickness of the cover part 114 is less than 1 μm, it may be difficult to achieve a desired appearance, and when the color 1142 is included, the density of the colorant 1142 may be reduced, and thus it may be difficult to display a desired color. When the thickness of the cover portion 114 exceeds 15 μm (for example, 7 μm), the overall light transmittance may decrease, and phenomena such as peeling or cracking of the cover portion 114 may occur. For example, in order to simplify the manufacturing process of the cover part 114 and reduce material cost, the thickness of the cover part 114 may be 1 um to 3 um (for example, 1 um to 2 um), but the present invention is limited thereto. no. In addition, the thickness of the cover portion 114 may be adjusted according to the color. For example, when the cover portion 114 has a white color having a relatively low light transmittance, a thickness smaller than that of the cover portion 114 of another color Can have.
반면, 종래에 제1 커버 부재(110)에 형성되는 층은 적외선 영역의 광의 광 투과도가 낮아 태양 전지에 도달하는 광에서 가시광선 영역의 광보다 적외선 영역의 광의 양이 적어 적외선 영역의 광을 효과적으로 이용하는데 어려움이 있었다. 예를 들어, 반사를 방지하기 위한 반사 방지층은 태양광의 세기가 가장 강한 600nm 정도의 단파장을 가지는 광의 반사를 방지할 수 있도록 해당 파장에서 가장 큰 광 투과도를 가진다. 종래에 제1 커버 부재(110)에 구비되는 층(일 예로, 반사 방지층)이 커버부(114)와 동일 또는 유사한 물질로 구성되는 경우에도 세라믹 형태를 구비하지 않는 경우에는 가시광선 영역의 광에 대한 평균 광 투과도보다 적외선 영역의 광에 대한 평균 광 투과도가 작다. 그리고 반사 방지층은 제1 베이스 부재(112) 및 밀봉재(130)보다 작은 1.3 정도의 굴절률을 가지고 500nm 이하(일 예로, 200nm 내외)의 두께를 가진다. 이에 따라 본 실시예의 커버 형성층(114)과는 특성이 다르며 적외선 영역의 광을 효과적으로 이용하기에는 어려움이 있다. 또한, 대부분의 경우에 제1 커버 부재(110)에 구비되는 층(일 예로, 반사 방지층)의 형성이 제1 커버 부재(112) 위에 적층되는 것에 의하여 이루어지므로, 제1 커버 부재(110)에 구비되는 층(일 예로, 반사 방지층)의 계면에서의 표면 거칠기가 다른 부분과 차이를 가지지 않는다. On the other hand, the conventional layer formed on the first cover member 110 has a low light transmittance in the infrared region, so that the amount of light in the infrared region is less than that in the visible region in the light reaching the solar cell. It was difficult to use. For example, the antireflection layer for preventing reflection has the greatest light transmittance at a corresponding wavelength so as to prevent reflection of light having a short wavelength of about 600 nm, which has the strongest intensity of sunlight. Even when a layer (for example, an anti-reflection layer) provided in the conventional first cover member 110 is made of the same or similar material as the cover part 114, in the case of not having a ceramic shape, The average light transmittance for the infrared region is smaller than the average light transmittance for the infrared region. In addition, the antireflection layer has a refractive index of about 1.3, which is smaller than that of the first base member 112 and the sealing material 130, and has a thickness of 500 nm or less (for example, about 200 nm). Accordingly, characteristics are different from that of the cover forming layer 114 of the present embodiment, and it is difficult to effectively use the light in the infrared region. In addition, in most cases, since the layer (for example, an anti-reflection layer) provided on the first cover member 110 is formed by being stacked on the first cover member 112, the first cover member 110 The surface roughness at the interface of the provided layer (for example, the anti-reflection layer) does not have a difference from other portions.
도 4에서는 제1 커버 부재(110)에서 커버 영역(CA)의 일부에만 커버부(114)가 구비되며, 일정 거리만큼 이격된 거리에서 보면 커버 영역(CA)의 전체에 걸쳐 커버부(114)에 의한 동일한 외관을 가진다고 인식될 수 있다. 여기서, 커버 영역(CA)이라 함은 일정한 색상, 이미지, 패턴, 느낌, 질감 등을 구현할 수 있도록 동일한 색상, 이미지, 패턴, 느낌, 질감 등을 가진다고 인식되는 영역을 의미한다. 좀더 구체적으로, 도 4의 (a)에 도시한 같이 제1 베이스 부재(112)의 전체 영역에 일정한 형상의 커버부(114)가 일정 간격으로 위치하여, 도 4의 (b)에 도시한 바와 같이 일정한 거리만큼 떨어져서 보면 커버부(114)가 위치한 제1 베이스 부재(112) 또는 커버 영역(CA)이 전체적으로 하나의 색으로 인식될 수 있다.In FIG. 4, the cover part 114 is provided only in a part of the cover area CA of the first cover member 110, and when viewed from a distance spaced apart by a predetermined distance, the cover part 114 covers the entire cover area CA. It can be recognized as having the same appearance by Here, the cover area CA means an area recognized as having the same color, image, pattern, feel, texture, etc. so that a certain color, image, pattern, feel, texture, etc. can be realized. More specifically, as shown in (a) of FIG. 4, the cover portions 114 of a certain shape are positioned at regular intervals over the entire area of the first base member 112, and as shown in (b) of FIG. Likewise, when viewed from a certain distance apart, the first base member 112 or the cover area CA in which the cover part 114 is located may be recognized as one color as a whole.
좀더 구체적으로, 복수의 커버부(114)가 일정한 거리를 가지면서 서로 이격되면서 일정 면적 비율 이상 형성되면, 일정 거리에서 보는 경우에 광 투과부(LTA)를 사이에 둔 복수의 커버부(114)가 하나로 인식될 수 있다. 즉, 복수의 커버부(114)에 의하여 복수의 커버부(114)가 위치한 커버 영역(CA)이 하나의 색으로 인식되면서도 복수의 커버부(114) 사이에 위치한 높은 광 투과도의 제1 베이스 부재(112)로 구성된 광 투과부(LTA)를 통하여 태양광은 큰 손실 없이 제1 커버 부재(110)를 통과하여 태양 전지(150)에 전달될 수 있다. More specifically, when the plurality of cover parts 114 are spaced apart from each other while having a certain distance and formed at a certain area ratio or more, when viewed from a certain distance, the plurality of cover parts 114 interposed between the light transmitting part (LTA) are It can be recognized as one. That is, the first base member having high light transmittance located between the plurality of cover parts 114 while the cover area CA in which the plurality of cover parts 114 is located is recognized as one color by the plurality of cover parts 114 Solar light may be transmitted to the solar cell 150 by passing through the first cover member 110 without significant loss through the light transmitting part LTA composed of 112.
상술한 구조에서는 커버부(114)가 제1 또는 제2 커버 부재(110, 120)의 일부에만 형성된 것을 예시하였다. 커버부(114)의 크기, 커버 영역(CA)의 총 면적에 대한 커버부(114)의 총 면적의 비율, 커버부(114)의 간격 등은 일정 거리(일 예로, 1m)를 두고 복수의 커버부(114)를 바라보면 하나의 색으로 인식될 수 있는 다양한 값을 가질 수 있다. 커버 영역(CA)을 구성하는 커버부(114)는 원형, 타원형, 다각형(삼각형, 사각형 등), 스트라이프 형상, 체크 무늬 형상, 불규칙한 형상, 또는 이들의 조합으로 구성되는 다양한 형상을 가질 수 있다. In the above-described structure, it is illustrated that the cover portion 114 is formed only on a part of the first or second cover members 110 and 120. The size of the cover part 114, the ratio of the total area of the cover part 114 to the total area of the cover area CA, the distance between the cover part 114, etc. When looking at the cover part 114, it may have various values that can be recognized as one color. The cover portion 114 constituting the cover area CA may have various shapes including a circle, an ellipse, a polygon (triangle, square, etc.), a stripe shape, a checkered shape, an irregular shape, or a combination thereof.
본 실시예에서는 태양 전지 패널(100)을 일정 거리 이상(일 예로, 1m 이상)에서 떨어져서 육안으로 볼 경우에 제1 커버 부재(110)에 의하여 태양 전지 패널(100)이 일정한 색상, 이미지, 패턴, 느낌, 질감 등을 전체적으로 균일하게 가질 수 있다. 일 예로, 건물(도 1의 참조부호 1, 이하 동일)의 외관을 조망하기에 충분한 거리에서 태양 전지 패널(100)을 본 경우에 건물(1)의 외관을 향상하면서도 출력은 크게 줄지 않도록 할 수 있다. In this embodiment, when the solar panel 100 is viewed with the naked eye away from a certain distance or more (for example, 1 m or more), the solar panel 100 is formed with a certain color, image, and pattern by the first cover member 110. , Feel, texture, etc. can be uniformly overall. For example, when the solar panel 100 is viewed from a distance sufficient to view the exterior of a building (reference numeral 1 in FIG. 1, hereinafter the same), the appearance of the building 1 can be improved while the output is not significantly reduced. have.
그러나 본 발명이 이에 한정되는 것은 아니며 커버부(114)가 제1 커버 부재(110)의 전체 영역에서 하나의 색을 가지면서 형성될 수도 있다. 그리고 커버부(114)가 두 개 이상의 색상을 가지는 부분을 포함할 수 있다. 그 외에 다양한 변형이 가능하다. However, the present invention is not limited thereto, and the cover portion 114 may be formed while having one color in the entire area of the first cover member 110. In addition, the cover portion 114 may include a portion having two or more colors. Other variations are possible.
본 실시예에서는 제2 커버 부재(120)가 커버 부분(124)을 구비하여 착색된 유리 기판으로 구성될 수 있다. 본 실시예에서 커버 부분(124)은 태양 전지(150), 배선부(142, 145) 등이 외부에서 인식되지 않도록 일정한 색상을 나타내는 부분일 수 있다. 커버부(114)와 달리, 건물 일체형 구조를 가지는 태양 전지 패널(100)의 후면에 위치하여 커버 부분(124)은 광의 확산, 산란 등이 요구되지 않으므로 특정한 색상을 가질 수 있다.In this embodiment, the second cover member 120 may be formed of a colored glass substrate with a cover portion 124. In the present embodiment, the cover portion 124 may be a portion displaying a certain color so that the solar cell 150, the wiring portions 142, and 145 are not recognized from the outside. Unlike the cover portion 114, the cover portion 124 is located on the rear surface of the solar panel 100 having an integrated building structure, and thus the cover portion 124 does not require diffusion or scattering of light, and thus may have a specific color.
제2 커버 부재(120) 또는 커버 부분(124)은, 국제조명위원회(CIE) Lab (즉, CIE L*a*b*) 색좌표, D65 표준 광원(정오 태양광원)에서 태양 전지(150)(특히, 태양 전지(150)의 반사 방지층(152))와 제2 커버 부재(120)의 색차(△E*ab) 수준이 11 이하가 되도록 하는 색상을 가질 수 있다. 상술한 색차(△E*ab) 수준이 11 이하가 되면, 태양 전지(150), 배선부(142, 145) 등이 일정 거리 이상에서는 외부에서 인식되지 않도록 할 수 있다. 여기서, 국제조명위원회(CIE) Lab (즉, CIE L*a*b*) 색좌표, D65 표준 광원에서 휘도(L*)가 50 이하로 상대적으로 어두운 색상을 가질 수 있다. 그러면, 태양 전지(150), 배선부(142, 145) 등이 외부에서 효과적으로 인식되지 않도록 할 수 있다. 그러나 본 발명이 이에 한정되는 것은 아니며, 국제조명위원회(CIE) Lab (즉, CIE L*a*b*) 색좌표, D65 표준 광원에서 휘도(L*)가 50를 초과하여 상대적으로 밝은 색상을 가질 수 있다.The second cover member 120 or the cover portion 124 is a solar cell 150 in the International Lighting Commission (CIE) Lab (i.e., CIE L * a * b * ) color coordinate, D65 standard light source (noon solar light source). In particular, the color difference (ΔE * ab) level between the antireflection layer 152 of the solar cell 150 and the second cover member 120 may be 11 or less. When the above-described color difference (ΔE * ab) level is 11 or less, it is possible to prevent the solar cell 150, the wiring parts 142, 145, and the like from being recognized outside a certain distance or more. Here, in the International Lighting Commission (CIE) Lab (ie, CIE L*a*b*) color coordinate, the luminance (L * ) of the D65 standard light source may have a relatively dark color of 50 or less. Then, the solar cell 150, the wiring parts 142, 145, and the like can be effectively prevented from being recognized from the outside. However, the present invention is not limited thereto, and the luminance (L*) exceeds 50 in the International Lighting Commission (CIE) Lab (ie, CIE L*a*b*) color coordinate, D65 standard light source to have a relatively bright color. I can.
이때, 커버 부분(124)의 색상은 커버부(114)의 색상과 동일할 수도 있고 다를 수도 있다. 특히, 커버 부분(124)은 투명, 반투명 등으로는 형성되지 않을 수 있고, 흰색을 제외한 무채색, 불투명한 색상, 또는 태양 전지(150)와 동일한 계열의 색을 가질 수 있다. 예를 들어, 커버 부분(124)이 검은색, 회색, 푸른색, 녹색, 갈색, 태양 전지(150)(특히, 태양 전지(150)의 반사 방지층(152))와 동일한 계열의 색, 또는 이들을 혼합한 색을 가질 수 있다. 흰색은 명도가 높은 색이므로 이를 이용하여 커버 부분(124)을 형성하기 힘들 수 있다. 일 예로, 커버 부분(124)이 태양 전지(150)와 동일한 계열의 색으로 형성되면 색상의 통일성을 가져 태양 전지 패널(100)이 전체적으로 색상의 통일성을 가지므로 심미성을 좀더 향상할 수 있다. 그러나 본 발명이 이에 한정되는 것은 아니다. 상술한 색 이외의 색이라도 커버부(114)보다 낮은 명도 또는 베이스 부재(112) 및/또는 베이스 부분(122)보다 낮은 광 투과도를 가지는 색이라면 다양한 색을 사용할 수 있다. In this case, the color of the cover part 124 may be the same as or different from the color of the cover part 114. In particular, the cover portion 124 may not be formed as transparent or translucent, and may have an achromatic color other than white, an opaque color, or a color of the same series as the solar cell 150. For example, the cover portion 124 is black, gray, blue, green, brown, a color of the same series as the solar cell 150 (in particular, the anti-reflection layer 152 of the solar cell 150), or You can have mixed colors. Since white is a color having high brightness, it may be difficult to form the cover portion 124 using it. For example, when the cover portion 124 is formed in the same color as the solar cell 150, the solar panel 100 has uniform color as a whole, so that aesthetics may be further improved. However, the present invention is not limited thereto. Even in colors other than the above-described colors, various colors may be used as long as the color has a lower brightness than the cover part 114 or a light transmittance lower than that of the base member 112 and/or the base part 122.
이와 같이 제2 커버 부재(120)가 일정한 색상을 가져 태양 전지(150) 등이 인식되는 것을 방지하면 밀봉재(130)의 색상을 변화시키지 않아도 된다. 밀봉재(130)에 색상을 변화시키기 위한 색소(예를 들어, 카본 블랙) 등을 포함시키면 원하지 않게 밀봉재(130)의 절연 특성 등이 저하되는 등의 문제가 발생할 수 있다. 그러나 본 발명이 이에 한정되는 것은 아니며 밀봉재(130)의 적어도 일부에 색소 등이 구비되는 등 다양한 변형이 가능하다. As described above, if the second cover member 120 has a certain color and prevents the solar cell 150 from being recognized, it is not necessary to change the color of the sealing material 130. Including a pigment (eg, carbon black) for changing color in the sealing material 130 may cause problems such as deterioration of the insulating properties of the sealing material 130 undesirably. However, the present invention is not limited thereto, and various modifications are possible, such as including a pigment or the like on at least a part of the sealing material 130.
일 예로, 본 실시예에서 커버 부분(124)은 산화물 세라믹 조성물로 구성될 수 있다. 그러면 동일 또는 유사한 제조 공정에 의하여 제1 및 제2 커버 부재(110, 120)를 형성할 수 있어 제조 공정을 단순화할 수 있다. 이 경우에 커버 부분(124)를 구성하는 산화물 세라믹 조성물 및 제2 커버 부재(120)에 대해서는, 앞서 설명한 커버부(114)를 구성하는 산화물 세라믹 조성물 및 제1 커버 부재(110) 에 대한 설명이 그대로 적용될 수 있다. For example, in this embodiment, the cover portion 124 may be made of an oxide ceramic composition. Then, the first and second cover members 110 and 120 may be formed by the same or similar manufacturing process, thereby simplifying the manufacturing process. In this case, for the oxide ceramic composition and the second cover member 120 constituting the cover portion 124, the description of the oxide ceramic composition constituting the cover portion 114 and the first cover member 110 described above It can be applied as it is.
그러나 본 발명이 이에 한정되는 것은 아니며 커버 부분(124)이 산화물 세라믹 조성물 이외의 다른 물질로 구성될 수 있다. 예를 들어, 제2 커버 부재(120)가, 제2 베이스 부재(122)와, 제2 베이스 부재(122) 위에 형성되며 복수의 커버층으로 구성된 커버 부분(124)을 포함할 수 있다. 복수의 커버층은 특정한 색상을 구현할 수 있는 개수로 형성되며 각 커버층은 유전 물질, 절연 물질, 반도체 물질 등과 같은 다양한 물질로 구성될 수 있다. However, the present invention is not limited thereto, and the cover portion 124 may be formed of a material other than the oxide ceramic composition. For example, the second cover member 120 may include a second base member 122 and a cover portion 124 formed on the second base member 122 and formed of a plurality of cover layers. The plurality of cover layers are formed in a number capable of implementing a specific color, and each cover layer may be made of various materials such as a dielectric material, an insulating material, and a semiconductor material.
예를 들어, 본 실시예에서 커버 부분(124)은, 태양 전지(150)의 반사 방지층(152)과 동일 또는 유사한 색을 구현할 수 있다. 일 예로, 커버 부분(124)이, 태양 전지(150)의 광전 변환부를 구성하는 실리콘을 포함하는 실리콘층과, 실리콘층 위에 위치하며 반사 방지층(152)과 동일한 물질 및 적층 구조를 가지는 유전층 또는 절연층을 포함할 수 있다. 그러면, 커버 부분(124)이 태양 전지(150)와 동일한 동일 또는 유사한 색을 가질 수 있어 태양 전지(150)와 동일 또는 유사한 색을 구현할 수 있다. 이에 의하여 간단한 구조에 의하여 태양 전지(150), 배선부(142, 145) 등이 인식되는 것을 효과적으로 방지할 수 있다. For example, in the present embodiment, the cover portion 124 may implement the same or similar color as the anti-reflection layer 152 of the solar cell 150. As an example, the cover portion 124 is a silicon layer comprising silicon constituting the photoelectric conversion unit of the solar cell 150, and a dielectric layer or insulating layer disposed on the silicon layer and having the same material and laminated structure as the antireflection layer 152 May include layers. Then, the cover portion 124 may have the same or similar color as the solar cell 150 and thus the same or similar color as the solar cell 150 may be implemented. Accordingly, it is possible to effectively prevent the solar cell 150 and the wiring portions 142 and 145 from being recognized by a simple structure.
다른 예로, 커버 부분(124)이 각기 금속 화합물(일 예로, 금속 산화물 또는 금속 질화 산화물)로 구성되는 복수의 커버층을 포함할 수 있다. 예를 들어, 복수의 커버층이 실리콘, 티타늄, 알루미늄, 지르코늄, 아연, 안티몬, 구리를 포함하는 산화물 또는 질화 산화물로 구성되는 절연층을 복수로 적층한 구조를 가질 수 있다. 그리고 복수의 커버층이 산화물 또는 질화 산화물로 구성될 경우에 커버 부분(124)은 복수의 커버층의 내부 또는 외부에 실리콘 질화물을 포함하는 층 및/또는 실리콘 탄화 질화물을 포함하는 층을 더 구비하여, 자외선, 수분 등에 의한 문제를 방지할 수 있다. As another example, the cover portion 124 may include a plurality of cover layers each composed of a metal compound (eg, metal oxide or metal nitride oxide). For example, the plurality of cover layers may have a structure in which a plurality of insulating layers composed of oxides or nitride oxides including silicon, titanium, aluminum, zirconium, zinc, antimony, and copper are stacked. And when the plurality of cover layers are composed of oxides or nitride oxides, the cover portion 124 further includes a layer containing silicon nitride and/or a layer containing silicon carbide nitride inside or outside the plurality of cover layers. , UV rays, moisture, etc. can prevent problems.
예를 들어, 커버 부분(124)이 실리콘 산화물로 구성된 제1 커버층, 그 위에 위치하며 실리콘 질화물로 구성된 제2 커버층, 그리고 그 위에 위치하며 실리콘 탄화 질화물로 구성된 제3 커버층을 포함하면, 커버 부분(124)이 청색을 가질 수 있다. 또는, 커버 부분(124)이 지르코늄 산화물로 구성된 제1 커버층, 그 위에 위치하며 실리콘 산화물로 구성된 제2 커버층, 그 위에 위치하며 지르코늄 산화물로 구성된 제3 커버층, 그리고 그 위에 위치하며 실리콘 산화물을 포함하는 제4 커버층을 포함하면, 커버 부분(124)이 초록색을 가질 수 있다. For example, if the cover portion 124 includes a first cover layer composed of silicon oxide, a second cover layer disposed thereon and composed of silicon nitride, and a third cover layer disposed thereon and composed of silicon carbide nitride, The cover portion 124 may have a blue color. Alternatively, the cover portion 124 is a first cover layer composed of zirconium oxide, a second cover layer disposed thereon and composed of silicon oxide, a third cover layer disposed thereon and composed of zirconium oxide, and a silicon oxide disposed thereon Including the fourth cover layer including, the cover portion 124 may have a green color.
본 실시예에 의하면, 증착 등에 의한 간단한 제조 공정에 의하여 커버 부분(124)을 형성할 수 있어 원하는 색상을 구비한 제2 커버 부재(120)를 제조할 수 있다. 커버 부분(124)은 제2 커버 부재(120)의 내면 및/또는 외면에 위치할 수 있다. According to the present embodiment, the cover portion 124 can be formed by a simple manufacturing process by evaporation or the like, so that the second cover member 120 having a desired color can be manufactured. The cover portion 124 may be located on the inner surface and/or the outer surface of the second cover member 120.
일 예로, 커버 부분(124)은, 유효 영역(AA) 및 비유효 영역(NA)에 대응하도록 전체적으로 형성될 수도 있고, 비유효 영역(NA)에 대응하는 부분에서만 형성되고 유효 영역(AA)에는 형성되지 않을 수 있다. 유효 영역(AA)에 커버 부분(124)이 형성되지 않으면 커버 부분(124)의 형성을 위한 비용이 절감될 수 있다. For example, the cover portion 124 may be entirely formed to correspond to the effective area AA and the non-effective area NA, and is formed only in the portion corresponding to the non-effective area NA, and is formed in the effective area AA. May not be formed. If the cover portion 124 is not formed in the effective area AA, the cost for forming the cover portion 124 may be reduced.
상술한 설명에서는 제2 커버 부재(120)가 유리 기판으로 구성된 제2 베이스 부재(122)와 커버 부분(124)을 구비한 것을 예시하였으나, 본 발명이 이에 한정되는 것은 아니다. 예를 들어, 커버 부분(124)이 금속막(일 예로, 검은색을 가지도록 코팅된 은(Ag), 또는 알루미늄)으로 이루어져, 유리 기판으로 구성된 제2 베이스 부재(122)에 증착될 수 있다. 또는 제2 커버 부재(120)가 제2 베이스 부재(122)와 커버 부분(124)을 구비하지 않고 일체화된 하나의 부재로 구성될 수 있다. 예를 들어, 제2 커버 부재(120)가 금속 플레이트(일 예로, 강판), 회로 기판 등으로 구성될 수 있다. 그 외에도 제2 커버 부재(120) 또는 제2 베이스 부재(122)가 수지(일 예로, 폴리카보네이트(poly carbonate, PC), 폴리에틸렌테레프탈레이트(poly ethylene terephthalate, PET), 에틸렌테트라플루오로에틸렌(ethylene tetra fluoro ethylene, ETFE), 폴리테트라플루오로에틸렌(poly tetra fluoro ethylene, PTFE) 등)를 포함하는 시트, 섬유 강화 플라스틱(fiber reinforced plastic) 등으로 구성될 수 있다. 이러한 시트 등으로 구성된 제2 베이스 부재(122) 위에 별도의 커버 부분(124)이 형성되거나, 제2 베이스 부재(122)의 내부에 안료 등이 포함되어 일정한 색상을 가질 수 있다. 이러한 시트 등으로 구성된 제2 베이스 부재(122)는 단일층 또는 복수의 층으로 구성될 수 있다.In the above description, it has been exemplified that the second cover member 120 includes the second base member 122 and the cover portion 124 made of a glass substrate, but the present invention is not limited thereto. For example, the cover portion 124 may be formed of a metal film (eg, silver (Ag) or aluminum coated to have a black color), and may be deposited on the second base member 122 formed of a glass substrate. . Alternatively, the second cover member 120 may be configured as a single member that is integrated without the second base member 122 and the cover portion 124. For example, the second cover member 120 may be formed of a metal plate (eg, a steel plate), a circuit board, or the like. In addition, the second cover member 120 or the second base member 122 is a resin (for example, polycarbonate (PC), polyethylene terephthalate (PET)), ethylene tetrafluoroethylene (ethylene). Tetra fluoro ethylene (ETFE), polytetrafluoroethylene (poly tetra fluoro ethylene, PTFE), etc.) can be composed of a sheet containing, fiber reinforced plastic (fiber reinforced plastic). A separate cover portion 124 may be formed on the second base member 122 made of such a sheet, or a pigment may be included in the second base member 122 to have a certain color. The second base member 122 made of such a sheet or the like may be made of a single layer or a plurality of layers.
그리고 상술한 설명에서는 제2 커버 부재(120)가 일정한 색상을 가지는 착색된 부재로 구성된 것을 예시하였다. 그러나 본 발명이 이에 한정되는 것은 아니며 제2 커버 부재(120)가 투광성, 비투광성, 또는 반사 특성의 다양한 특성을 가질 수 있다. 그 외의 다양한 변형이 가능하다. And in the above description, it is illustrated that the second cover member 120 is formed of a colored member having a certain color. However, the present invention is not limited thereto, and the second cover member 120 may have various characteristics of translucent, non-transmissive, or reflective properties. Other variations are possible.
도 3에서는 커버부(114)가 제1 커버 부재(110)의 외면 쪽에 위치하고 커버 부분(124)이 제2 커버 부재(120)의 외면 쪽에 위치하는 것을 예시하였다. 커버부(114)가 제1 커버 부재(110)의 외면 쪽에 위치하여 태양 전지 패널(100)이 건물(1)에 적용되었을 때 발생할 수 있는 눈부심을 커버부(114)에 의하여 방지 또는 최소화할 수 있다. 커버 부분(124)이 제2 커버 부재(120)의 외면 쪽에 위치하여 태양 전지 패널(100)의 후면 측에 가깝게 위치할 수 있다. 그러나 본 발명이 이에 한정되는 것은 아니다. 따라서 커버부(114)가 제1 커버 부재(112)의 내면 및 외면 중 적어도 하나에 위치할 수 있고, 및/또는 커버 부분(124)이 제2 커버 부재(120)의 내면 및 외면 중 적어도 하나에 위치할 수 있다. 그리고 상술한 바와 같이 커버부(114) 또는 커버 부분(124)이 형성되지 않은 다른 일면에 요철, 텍스쳐링 등이 형성된 광 확산부(LD)가 형성될 수 있다. 그 외의 다양한 변형이 가능하다. In FIG. 3, it is illustrated that the cover portion 114 is positioned on the outer surface side of the first cover member 110 and the cover portion 124 is positioned on the outer surface side of the second cover member 120. Since the cover part 114 is located on the outer surface of the first cover member 110, glare that may occur when the solar panel 100 is applied to the building 1 can be prevented or minimized by the cover part 114. have. The cover portion 124 may be positioned on the outer surface side of the second cover member 120 and may be positioned close to the rear side of the solar panel 100. However, the present invention is not limited thereto. Therefore, the cover portion 114 may be located on at least one of the inner and outer surfaces of the first cover member 112, and/or the cover portion 124 is at least one of the inner and outer surfaces of the second cover member 120 Can be located in In addition, as described above, the light diffusion portion LD having irregularities, texturing, etc. formed on the cover portion 114 or the other surface on which the cover portion 124 is not formed may be formed. Other variations are possible.
커버부(114) 및/또는 커버 부분(124)이 형성되는 경우에도, 커버부(114)의 형상, 색상 등, 커버 부분(124)의 형상 등에 따라 폭이 1mm 이상인 광폭 부분을 포함하는 배선부(142, 145)(예를 들어, 버스 리본(145))는 일부 인식될 수 있다. 이러한 현상은 커버부(114)가 일부 형성된 경우뿐만 아니라 전체적으로 형성된 경우에도 나타날 수 있다. 이에 본 실시예에서는 착색 부재(160)를 구비할 수 있다. 도 2, 도 3, 도 12 및 도 13을 참조하여 착색 부재(160)를 상세하게 설명한다. Even when the cover portion 114 and/or the cover portion 124 is formed, a wiring portion including a wide portion having a width of 1 mm or more depending on the shape, color, etc. of the cover portion 114, the shape of the cover portion 124, etc. 142, 145 (eg, bus ribbon 145) may be partially recognized. This phenomenon may occur when the cover part 114 is partially formed as well as when it is formed entirely. Accordingly, in this embodiment, a colored member 160 may be provided. The colored member 160 will be described in detail with reference to FIGS. 2, 3, 12, and 13.
도 12는 도 2에 도시한 태양 전지 패널(100)에서 태양 전지(150), 버스 리본(145) 및 착색 부재(160)를 개략적으로 도시한 평면도이다. 도 13은 본 발명의 변형예에 따른 태양 전지 패널(100)에서 태양 전지(150), 버스 리본(145) 및 착색 부재(160)를 개략적으로 도시한 평면도이다. 간략한 도시를 위하여 도 12 및 도 13에서는 태양 전지(150), 버스 리본(145) 및 착색 부재(160)를 개략적으로 도시하였고 이를 제외한 다른 구성에 대해서는 구체적인 도시를 생략하였다. 12 is a plan view schematically showing a solar cell 150, a bus ribbon 145, and a colored member 160 in the solar panel 100 shown in FIG. 2. 13 is a plan view schematically showing a solar cell 150, a bus ribbon 145, and a colored member 160 in a solar panel 100 according to a modified example of the present invention. For the sake of simplicity, FIGS. 12 and 13 schematically illustrate the solar cell 150, the bus ribbon 145, and the coloring member 160, and other configurations other than this are omitted.
도 2, 도3 및 도 12를 참조하면, 본 실시예에서 착색 부재(160)가 태양 전지부(SP)의 전면과 밀봉재(130)(좀더 구체적으로, 제1 밀봉재(131)) 사이에서 배선부(142, 145)의 적어도 일부를 가리도록 위치할 수 있다. 특히, 착색 부재(160)는 버스 리본(145)과 같이 1mm 이상인 광폭 부분에 부분적 또는 전체적으로 중첩되어 광폭 부분의 적어도 일부를 가릴 수 있다. 2, 3 and 12, in the present embodiment, the colored member 160 is a wiring between the front surface of the solar cell unit SP and the sealing material 130 (more specifically, the first sealing material 131). It may be positioned to cover at least a portion of the parts 142 and 145. In particular, the colored member 160 may partially or entirely overlap a wide portion of 1 mm or more, such as the bus ribbon 145, to cover at least a portion of the wide portion.
착색 부재(160)는 특정한 색상(일 예로, 검은색, 회색, 또는 태양 전지(150)와 동일 또는 유사한 색상)을 가질 수 있고, 배선부(142, 145)(특히, 버스 리본(145))와 다른 반사도를 가져 배선부(142, 145)가 인식되는 것을 방지할 수 있다. 배선부(142, 145)의 광폭 부분이 상대적으로 큰 폭을 가지며 금속으로 구성되어 반사 등에 의하여 좀더 쉽게 인식될 수 있음을 고려하여, 착색 부재(160)로 배선부(142, 145)의 광폭 부분을 가려서 배선부(142, 145)의 인식을 좀더 효과적으로 방지할 수 있다. The colored member 160 may have a specific color (for example, black, gray, or the same or similar color as the solar cell 150), and the wiring portions 142 and 145 (in particular, the bus ribbon 145) Since it has a different reflectivity than that, it is possible to prevent the wiring portions 142 and 145 from being recognized. Considering that the wide portion of the wiring portions 142 and 145 has a relatively large width and is made of metal and can be more easily recognized by reflection, the colored member 160 is used as the wide portion of the wiring portions 142 and 145 It is possible to more effectively prevent the recognition of the wiring parts 142 and 145 by covering them.
여기서, 착색 부재(160)와 태양 전지(150)의 채도(saturation) 차이가 10 이하일 수 있다. 그리고 착색 부재(160)와 태양 전지부(SP)의 후면에 위치하는 후면부(즉, 제2 밀봉재(132)와 제2 커버 부재(120))의 채도 차이가 10 이하일 수 있다. 일 예로, 착색 부재(160), 태양 전지(150) 및 후면부(일 예로, 제2 커버 부재(120))의 채도 차이가 10 이하일 수 있다. 착색 부재(160)가 상술한 바와 같은 채도를 가지면 배선재(142, 145)의 광폭 부분의 인식을 효과적으로 방지할 수 있다. Here, a difference in saturation between the coloring member 160 and the solar cell 150 may be 10 or less. In addition, a difference in saturation between the coloring member 160 and the rear portion (ie, the second sealing material 132 and the second cover member 120) positioned on the rear surface of the solar cell unit SP may be 10 or less. For example, a difference in saturation between the coloring member 160, the solar cell 150, and the rear portion (eg, the second cover member 120) may be 10 or less. If the coloring member 160 has the above-described saturation, it is possible to effectively prevent the recognition of the wide portion of the wiring members 142 and 145.
착색 부재(160)는 두께가 1mm 이하인 필름 형태, 시트 형태, 또는 테이프 형태로 구성되어 다양한 방법으로 원하는 위치에 위치할 수 있다. 또한, 착색 부재(160)는 1층 이상의 층상 구조를 갖도록 구성될 수 있다. 일 예에서, 착색 부재(160)는 밀봉재(130)와 동일한 재료로 구성되면서 적어도 착색된 제1 층과 이에 점착된 투명한 제2 층을 포함하도록 구성될 수 있다. 이 경우에, 투명한 제2 층이 배선부(142, 145)를 향하도록 배치되는 것이 바람직할 수 있다. 만약 제1 층이 배선부(142, 145)를 향하게 배치되면, 제1 층을 착색하는데 사용되는 물질 중 하나인 카본은 도전성을 갖기 때문에, 누설 전류가 발생해 패널의 효율이 떨어지는 문제가 발생할 수 있다. 일 예에서는 투명한 제2 층이 배선부를 향하도록 배치해, 착색부재(160)에 의해 예상치 못하게 패널의 효율이 저하를 방지할 수 있다. 또한 착색 부재(16)는 서로 다른 색상, 명도, 또는 채도를 갖도록 구성된 제1 층과 제2 층을 포함하도록 구성되는 것 역시 가능하다. 이 같은 다층 구조로 구성된 착색 부재(160)는 위의 필름 형태, 시트 형태 또는 테이프 형태로 구현되어, 태양전지 패널을 이루는 각 구성 요소(커버부재, 밀봉재 전지부)를 열 압착해 일체화하는 모듈 공정에서 원하는 위치의 커버 부재에 부착되거나, 또는 모듈 공정 전에 부착될 수 있다.The colored member 160 may be formed in a film form, a sheet form, or a tape form having a thickness of 1 mm or less, and may be positioned at a desired position in various ways. In addition, the colored member 160 may be configured to have one or more layered structures. In one example, the colored member 160 may be made of the same material as the sealing material 130 and may be configured to include at least a colored first layer and a transparent second layer adhered thereto. In this case, it may be preferable that the transparent second layer is disposed to face the wiring portions 142 and 145. If the first layer is disposed toward the wiring parts 142 and 145, since carbon, one of the materials used to color the first layer, has conductivity, a leakage current may occur and the panel's efficiency may decrease. have. In one example, the transparent second layer is disposed so as to face the wiring portion, so that the efficiency of the panel may be prevented from being unexpectedly deteriorated by the coloring member 160. In addition, the coloring member 16 may be configured to include a first layer and a second layer configured to have different hues, brightness, or saturation. The colored member 160 composed of such a multi-layered structure is implemented in the form of a film, a sheet, or a tape above, and is a module process in which each component (cover member, sealing material battery part) constituting the solar panel is thermally compressed to integrate It may be attached to the cover member at a desired position in the module, or may be attached before the module process.
착색 부재(160)는 태양 전지부(SP)(특히, 버스 리본(145))에 점착(cohesion) 또는 접착(adhesion)되어 위치할 수 있다. 또는, 착색 부재(160)가 태양 전지부(SP)(일 예로, 버스 리본(145)) 위에 놓여진 상태에서 라미네이션 공정에서 밀봉재(130)에 의하여 태양 전지부(SP)에 고정될 수 있다. 여기서, 점착이라 함은 상온에서 물리적 힘에 의해 두 개의 층이 서로 부착되거나 분리될 수 있는 정도의 접착력을 의미하는 것이며, 접착이라 함은 열처리를 통해 두 개의 층이 서로 부착되어 두 개의 층을 분리할 때 어느 하나의 층이 손상되는 것을 의미할 수 있다. 착색 부재(160)가 점착에 의하여 태양 전지부(SP)에 고정되면 제조 공정 중 착색 부재(160)의 점착, 분리, 위치 조정 등이 용이하다. 착색 부재(160)가 접착에 의하여 태양 전지부(SP)에 고정되면 라미네이션 공정 중에 착색 부재(160)를 좀더 안정적으로 고정할 수 있다. 착색 부재(160)를 별도의 접착 또는 점착 물질 등을 사용하지 않고 태양 전지부(SP) 위에 위치시키면 공정을 단순화할 수 있다. The colored member 160 may be positioned by being cohesion or adhesion to the solar cell part SP (in particular, the bus ribbon 145). Alternatively, the colored member 160 may be fixed to the solar cell part SP by the sealing material 130 in the lamination process while the colored member 160 is placed on the solar cell part SP (for example, the bus ribbon 145). Here, adhesion refers to an adhesive strength that allows two layers to be attached or separated from each other by physical force at room temperature, and adhesion refers to two layers being attached to each other through heat treatment to separate the two layers. When doing so, it may mean that any one layer is damaged. When the colored member 160 is fixed to the solar cell part SP by adhesion, it is easy to adhere, separate, and position the colored member 160 during the manufacturing process. When the colored member 160 is fixed to the solar cell part SP by adhesion, the colored member 160 may be more stably fixed during the lamination process. If the colored member 160 is placed on the solar cell unit SP without using a separate adhesive or adhesive material, the process can be simplified.
본 실시예에서는 하나의 착색 부재(160)가 태양 전지 패널(100)의 일측을 기준으로 복수의 버스 리본(145)의 전체 부분을 전체적으로 가리도록 형성된 것을 예시하였다. 그러나 본 발명이 이에 한정되는 것은 아니다. 따라서 착색 부재(160)가 태양 전지 패널(100)의 일측을 기준으로 복수의 버스 리본(145)에 대응하도록 복수 개 구비될 수도 있다. In this embodiment, it is illustrated that one colored member 160 is formed to cover the entire portion of the plurality of bus ribbons 145 based on one side of the solar panel 100. However, the present invention is not limited thereto. Accordingly, a plurality of colored members 160 may be provided so as to correspond to the plurality of bus ribbons 145 based on one side of the solar panel 100.
이때, 착색 부재(160)의 크기(예를 들어, 폭 또는 길이)가 배선재(142, 145)의 광폭 부분의 크기(예를 들어, 폭 또는 길이)와 같거나 그보다 클 수 있다. 일 예로, 착색 부재(160)의 크기가 배선재(142, 145)의 광폭 부분의 크기보다 클 수 있다. 그러면, 착색 부재(160)가 배선재(142, 145)의 광폭 부분의 전체 부분에 중첩되어 이를 가리는 것에 의하여 배선재(142, 145)의 광폭 부분의 노출을 효과적으로 방지할 수 있다. 그러나 본 발명이 이에 한정되는 것은 아니다. 따라서 착색 부재(160)의 크기가 배선재(142, 145)의 광폭 부분의 크기와 같거나 그보다 클 수 있다. 또는, 도 13에 도시한 바와 같이, 착색 부재(160)가 배선재(142, 145)의 광폭 부분의 일부만을 가리고 일부는 노출되도록 할 수 있다. 이때, 착색 부재(160)에 의하여 가려지지 않은 배선재(142, 145)의 광폭 부분의 최대 폭(D1, D2)이 1mm 미만일 수 있다. 이와 같이 착색 부재(160)가 배선재(142, 145)의 광폭 부분의 일부만을 가리는 경우에도, 노출되는 배선재(142, 145)의 광폭 부분의 최대 폭(D1, D2)을 1mm 미만이 되도록 하면 배선재(142, 145)가 쉽게 인식되지 않도록 할 수 있다. In this case, the size (eg, width or length) of the colored member 160 may be equal to or greater than the size (eg, width or length) of the wide portion of the wiring members 142 and 145. As an example, the size of the colored member 160 may be larger than the size of the wide portion of the wiring members 142 and 145. Then, the colored member 160 may be effectively prevented from being exposed to the wide portions of the wiring members 142 and 145 by overlapping and covering the entire wide portions of the wiring members 142 and 145. However, the present invention is not limited thereto. Therefore, the size of the colored member 160 may be equal to or greater than the size of the wide portion of the wiring members 142 and 145. Alternatively, as shown in FIG. 13, the colored member 160 may cover only a part of the wide portion of the wiring members 142 and 145 and expose a part of it. In this case, the maximum widths D1 and D2 of the wide portions of the wiring members 142 and 145 not covered by the colored member 160 may be less than 1 mm. In this way, even when the colored member 160 covers only a part of the wide portion of the wiring members 142 and 145, if the maximum widths D1 and D2 of the wide portion of the exposed wiring members 142 and 145 are less than 1 mm, the wiring material You can make (142, 145) not easily recognized.
본 실시예에 의하면, 적외선 영역의 평균 광 투과도인 제1 투과도가 가시광선 영역의 평균 광 투과도인 제2 투과도와 같거나 그보다 큰 커버부(114)가 제1 커버 부재(110)에 구비되어 태양 전지 패널(100)의 외관 및 심미성을 향상하면서도 태양 전지 패널(100)의 출력을 높게 유지할 수 있다. 이러한 커버부(114)는 산화물 세라믹 조성물로 구성되어 제1 커버 부재(110)가 유리 기판을 포함할 경우에 나타날 수 있는 눈부심 현상을 효과적으로 방지할 수 있다. 그리고 태양 전지 패널(100)을 옆에서 보는 경우에도 색상 변화 또는 커버부(114)가 인식되지 않고 원하는 색상, 이미지, 패턴, 느낌, 질감 등을 그대로 유지할 수 있다. 또한, 제2 커버 부재(120)가 커버 부분(124)에 의하여 태양 전지(150), 배선부(142, 145) 등이 인식되지 않도록 하는 색상을 가지도록 착색되어 태양 전지 패널(100)의 외관을 더욱 향상할 수 있다. According to the present embodiment, a cover portion 114 having a first transmittance, which is the average light transmittance in the infrared region, equal to or greater than the second transmittance, which is the average light transmittance in the visible light region, is provided in the first cover member 110 and While improving the appearance and aesthetics of the battery panel 100, it is possible to maintain a high output of the solar panel 100. Since the cover part 114 is made of an oxide ceramic composition, it is possible to effectively prevent a glare phenomenon that may occur when the first cover member 110 includes a glass substrate. In addition, even when the solar panel 100 is viewed from the side, a color change or the cover portion 114 is not recognized, and a desired color, image, pattern, feel, texture, etc. can be maintained as it is. In addition, the second cover member 120 is colored to have a color that prevents the solar cell 150, the wiring portions 142, 145, etc. from being recognized by the cover portion 124, so that the appearance of the solar panel 100 Can be further improved.
반면, 종래 기술로서 제1 또는 제2 베이스 부재(110, 120)와 일체화되지 않으면서 그 위에 별도로 형성되는 착색 부분을 위치시키는 경우에는 옆에서 보거나 밝을 경우에 착색 부분의 색상이 다르게 인식되거나 다른 부재와 별도로 인식되어 심미성을 저하시킬 수 있었다. 또한, 종래에 사용되던 색유리는 광 투과도가 매우 낮아 태양 전지 패널(100)의 제1 커버 부재(110) 등에 적용되면 태양 전지 패널(100)의 출력을 크게 저하시킬 수 있다. On the other hand, in the case of placing a colored portion formed separately on the first or second base member 110 and 120 as a conventional technique, when viewed from the side or when it is bright, the color of the colored portion is recognized differently or other members It was recognized separately and could degrade the aesthetics. In addition, the conventional colored glass has very low light transmittance, and when applied to the first cover member 110 of the solar panel 100, the output of the solar panel 100 may be greatly reduced.
또한, 본 실시예에 의하면, 배선부(142, 145), 특히 일정 수준 이상의 폭을 가지는 배선부(142, 145)의 광폭 부분이 인식되는 것을 방지할 수 있고, 배선부(142, 145)가 금속으로 구성되는 경우에 발생할 수 있는 반짝임, 글래어(glare) 현상 등을 방지할 수 있다. 특히, 본 실시예에서와 같이 커버부(114) 및/또는 커버 부분(114)이 구비되는 경우에도 배선부(142, 145)의 광폭 부분은 인식될 수 있는바, 착색 부분(160)이 추가로 구비되어 배선부(142, 145)의 광폭 부분의 인식을 효과적으로 방지할 수 있다. 이에 따라 태양 전지 패널(100)의 미적 균일도를 향상할 수 있다. 도 14의 (a)에 도시한 바와 같이 본 실시예에 따른 착색 부분(160)이 구비된 경우에는 배선부(142, 145)의 광폭 부분이 인식되지 않는 반면, 도 14의 (b)에 도시한 바와 같이 착색 부분(160)을 구비하지 않는 종래의 경우에는 배선부(142, 142)의 광폭 부분이 인식될 수 있다. In addition, according to the present embodiment, it is possible to prevent the wide portion of the wiring portions 142 and 145, particularly the wiring portions 142 and 145 having a width of a certain level or more, from being recognized, and the wiring portions 142 and 145 When it is made of metal, it is possible to prevent glare and glare that may occur. In particular, even when the cover portion 114 and/or the cover portion 114 is provided as in the present embodiment, the wide portion of the wiring portions 142 and 145 can be recognized, and the colored portion 160 is added. Is provided to effectively prevent recognition of the wide portion of the wiring portions 142 and 145. Accordingly, it is possible to improve the aesthetic uniformity of the solar panel 100. As shown in (a) of FIG. 14, when the colored portion 160 according to the present embodiment is provided, the wide portion of the wiring portions 142 and 145 is not recognized, but shown in FIG. 14 (b). As described above, in the conventional case where the colored portion 160 is not provided, the wide portion of the wiring portions 142 and 142 can be recognized.
이하에서는 본 발명의 다른 실시예에 따른 태양 전지 패널을 상세하게 설명한다. 상술한 설명과 동일 또는 극히 유사한 부분에 대해서는 상세한 설명을 생략하고 서로 다른 부분에 대해서만 상세하게 설명한다. 그리고 상술한 실시예 또는 이를 변형한 예와 아래의 실시예 또는 이를 변형한 예들을 서로 결합한 것 또한 본 발명의 범위에 속한다. 간략한 도시 및 명확한 이해를 위하여 이하의 실시예들과 관련된 도면들에서는 태양 전지 패널의 각 구성을 분해하여 개략적으로 도시하였다. Hereinafter, a solar panel according to another embodiment of the present invention will be described in detail. Detailed descriptions of parts that are the same or extremely similar to those of the above description will be omitted, and only different parts will be described in detail. In addition, a combination of the above-described embodiments or modified examples thereof and the following embodiments or modified examples thereof also falls within the scope of the present invention. In the drawings related to the following embodiments for brief illustration and clear understanding, each configuration of a solar panel is exploded and schematically illustrated.
도 15는 본 발명의 다른 실시예에 따른 태양 전지 패널을 개략적으로 도시한 분해 단면도이다. 15 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
도 15를 참조하면, 본 실시예에서는 제2 밀봉재(132)가 착색되어 일정한 색상을 가질 수 있다. 이 경우에는 착색 부재(160), 태양 전지(150) 및 후면부(제1 밀봉재(132) 및 제2 커버 부재(120), 특히, 제2 밀봉재(132))의 채도 차이가 10 이하일 수 있다. 이때, 제1 커버 부재(110)는 커버부(도 3의 참조부호 114, 이하 동일)을 구비하고, 제2 커버 부재(120)는 커버 부분(도 3의 참조부호 124, 이하 동일)을 구비할 수도 있고 구비하지 않을 수도 있다.Referring to FIG. 15, in this embodiment, the second sealing material 132 may be colored to have a certain color. In this case, the difference in saturation between the coloring member 160, the solar cell 150, and the rear portion (the first sealing material 132 and the second cover member 120, in particular, the second sealing material 132) may be 10 or less. At this time, the first cover member 110 includes a cover portion (reference numeral 114 in FIG. 3, the same hereinafter), and the second cover member 120 includes a cover portion (reference numeral 124 in FIG. 3, the same hereinafter). You may or may not have it.
도 16은 본 발명의 또 다른 실시예에 따른 태양 전지 패널을 개략적으로 도시한 분해 단면도이다. 16 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
도 16을 참조하면, 본 실시예에서는 제2 밀봉재(132)는 서로 다른 색상을 가지는 제1 밀봉층(132a) 및 제2 밀봉층(132b)을 구비할 수 있다. 예를 들어, 태양 전지부(SP)에 인접한 제1 밀봉층(132a)이 제2 밀봉층(132b)보다 높은 투과도를 가질 수 있고(일 예로, 투명 밀봉층으로 구성되고), 제2 밀봉층(132b)이 착색되어 일정한 색상을 가질 수 있다. 이 경우에는 착색 부재(160), 태양 전지(150) 및 후면부(제1 밀봉재(132) 및 제2 커버 부재(120), 특히, 제2 밀봉층(132b))의 채도 차이가 10 이하일 수 있다. 이때, 제1 커버 부재(110)는 커버부(114)을 구비하고, 제2 커버 부재(120)는 커버 부분(124)을 구비할 수도 있고 구비하지 않을 수도 있다. Referring to FIG. 16, in this embodiment, the second sealing material 132 may include a first sealing layer 132a and a second sealing layer 132b having different colors. For example, the first sealing layer 132a adjacent to the solar cell part SP may have a higher transmittance than the second sealing layer 132b (for example, composed of a transparent sealing layer), and the second sealing layer (132b) may be colored to have a certain color. In this case, the difference in saturation between the coloring member 160, the solar cell 150, and the rear portion (the first sealing material 132 and the second cover member 120, in particular, the second sealing layer 132b) may be 10 or less. . In this case, the first cover member 110 may or may not include the cover portion 114, and the second cover member 120 may or may not include the cover portion 124.
도 17은 본 발명의 또 다른 실시예에 따른 태양 전지 패널을 개략적으로 도시한 분해 단면도이다. 17 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
도 17을 참조하면, 본 실시예에서는 배선재(142) 및 제2 밀봉재(132)를 구비하지 않고 태양 전지부(SP)의 후면에서 태양 전지부(SP)와 제2 커버 부재(120) 사이에 태양 전지(150) 및 버스 리본(140)에 연결되는 배선을 구비하는 배선 기판(135)이 구비될 수 있다. 이 경우에는 착색 부재(160), 태양 전지(150) 및 후면부(배선 기판(135) 및 제2 커버 부재(120), 특히 배선 기판(135))의 채도 차이가 10 이하일 수 있다. 이때, 제1 커버 부재(110)는 커버부(114)을 구비할 수 있다. Referring to FIG. 17, in this embodiment, the wiring member 142 and the second sealing member 132 are not provided, and between the solar cell unit SP and the second cover member 120 at the rear surface of the solar cell unit SP. A wiring board 135 having wirings connected to the solar cell 150 and the bus ribbon 140 may be provided. In this case, the difference in saturation between the coloring member 160, the solar cell 150, and the rear portion (the wiring substrate 135 and the second cover member 120, particularly the wiring substrate 135) may be 10 or less. In this case, the first cover member 110 may include a cover portion 114.
도 18은 본 발명의 또 다른 실시예에 따른 태양 전지 패널을 개략적으로 도시한 분해 단면도이다. 18 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
도 18을 참조하면, 본 실시예에서는 배선재(도 2의 참조부호 142, 이하 동일)를 구비하지 않고 태양 전지(150)의 일부를 중첩하여 중첩된 태양 전지(150) 사이에 접착 특성을 가지는 접합 부재(도시하지 않음)을 위치시켜 태양 전지 스트링을 구성할 수 있다. 도 18에서는 제2 커버 부재(120)가 착색된 것을 예시하였으나, 본 발명이 이에 한정되는 것은 아니며 다양한 구조가 적용될 수 있다. 이때, 제1 커버 부재(110)는 커버부(114)을 구비할 수 있다. Referring to FIG. 18, in this embodiment, a junction having an adhesive property between the overlapped solar cells 150 by overlapping a part of the solar cell 150 without a wiring material (reference numeral 142 in FIG. 2, hereinafter the same) A member (not shown) may be positioned to form a solar cell string. 18 illustrates that the second cover member 120 is colored, but the present invention is not limited thereto, and various structures may be applied. In this case, the first cover member 110 may include a cover portion 114.
도 19는 본 발명의 또 다른 실시예에 따른 태양 전지 패널을 개략적으로 도시한 분해 단면도이다. 19 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
도 19를 참조하면, 본 실시예에서는 태양 전지(150)가 서로 다른 극성을 가지는 제1 및 제2 전극이 후면에 위치하는 후면 전극 구조를 가지고 배선재(142)가 이웃한 태양 전지(150)의 후면에서 태양 전지(150)를 전기적으로 연결할 수 있다. 도 19에서는 제2 커버 부재(120)가 착색된 것을 예시하였으나, 본 발명이 이에 한정되는 것은 아니며 다양한 구조가 적용될 수 있다. 이때, 제1 커버 부재(110)는 커버부(114)을 구비할 수 있다. Referring to FIG. 19, in this embodiment, the solar cell 150 has a rear electrode structure in which first and second electrodes having different polarities are located on the rear side, and the wiring member 142 is adjacent to the solar cell 150. The solar cell 150 can be electrically connected from the rear side. 19 illustrates that the second cover member 120 is colored, but the present invention is not limited thereto, and various structures may be applied. In this case, the first cover member 110 may include a cover portion 114.
도 20은 본 발명의 또 다른 실시예에 따른 태양 전지 패널을 개략적으로 도시한 분해 단면도이다. 20 is an exploded cross-sectional view schematically showing a solar panel according to another embodiment of the present invention.
도 20을 참조하면, 본 실시예에서는 배선재(142) 및 제2 밀봉재(132)를 구비하지 않고 태양 전지부(SP)의 후면에서 태양 전지부(SP)와 제2 커버 부재(120) 사이에 태양 전지(150) 및 버스 리본(140)에 연결되는 배선을 구비하는 배선 기판(135)이 구비될 수 있다. 그리고 제2 밀봉재(132)에 관통홀(132a)이 형성되고, 배선 기판(135)과 태양 전지(150)를 연결하는 관통 접합재(144)가 구비될 수 있다. 이 경우에는 착색 부재(160), 태양 전지(150) 및 후면부(배선 기판(135) 및 제2 커버 부재(120), 특히 배선 기판(135))의 채도 차이가 10 이하일 수 있다. 이때, 제1 커버 부재(110)는 커버부(114)을 구비할 수 있다. Referring to FIG. 20, in the present embodiment, the wiring member 142 and the second sealing member 132 are not provided, and between the solar cell unit SP and the second cover member 120 at the rear surface of the solar cell unit SP. A wiring board 135 having wirings connected to the solar cell 150 and the bus ribbon 140 may be provided. In addition, a through hole 132a may be formed in the second sealing material 132, and a through bonding material 144 connecting the wiring board 135 and the solar cell 150 may be provided. In this case, the difference in saturation between the coloring member 160, the solar cell 150, and the rear portion (the wiring substrate 135 and the second cover member 120, particularly the wiring substrate 135) may be 10 or less. In this case, the first cover member 110 may include a cover portion 114.
일 변형예로, 도 21에 도시한 바와 같이, 별도의 제2 커버 부재(도 2의 참조부호 120)를 생략하고 배선 기판(135)을 외면을 구성하는 제2 커버 부재로 사용할 수 있다. As a modified example, as shown in FIG. 21, a separate second cover member (reference numeral 120 in FIG. 2) may be omitted and the wiring board 135 may be used as a second cover member constituting the outer surface.
상술한 바에 따른 특징, 구조, 효과 등은 본 발명의 적어도 하나의 실시예에 포함되며, 반드시 하나의 실시예에만 한정되는 것은 아니다. 나아가, 각 실시예에서 예시된 특징, 구조, 효과 등은 실시예들이 속하는 분야의 통상의 지식을 가지는 자에 의하여 다른 실시예들에 대해서도 조합 또는 변형되어 실시 가능하다. 따라서 이러한 조합과 변형에 관계된 내용들은 본 발명의 범위에 포함되는 것으로 해석되어야 할 것이다.Features, structures, effects, and the like according to the above are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, and the like illustrated in each embodiment may be combined or modified for other embodiments by a person having ordinary knowledge in the field to which the embodiments belong. Accordingly, contents related to such combinations and modifications should be construed as being included in the scope of the present invention.

Claims (11)

  1. 태양 전지 및 상기 태양 전지에 연결되는 배선부를 포함하는 태양 전지부; A solar cell unit including a solar cell and a wiring unit connected to the solar cell;
    상기 태양 전지부 위에 위치하는 밀봉재; A sealing material positioned on the solar cell unit;
    상기 밀봉재 위에서 상기 태양 전지부의 전면 위에 위치하며 특정한 색상, 이미지, 패턴, 느낌, 또는 질감을 구현하는 커버부를 구비하는 제1 커버 부재; A first cover member disposed on the front surface of the solar cell unit on the sealing material and having a cover unit implementing a specific color, image, pattern, feel, or texture;
    상기 태양 전지부의 타면 위에 위치하는 제2 커버 부재; 및 A second cover member positioned on the other surface of the solar cell unit; And
    상기 태양 전지부의 전면 쪽에서 상기 배선부의 적어도 일부를 가리는 적어도 1층 이상의 착색 부재At least one or more colored members covering at least a part of the wiring part on the front side of the solar cell part
    를 포함하는 태양 전지 패널. Solar panel comprising a.
  2. 제1항에 있어서, The method of claim 1,
    상기 배선부가 폭이 1mm이상인 광폭 부분을 포함하고, The wiring portion includes a wide portion having a width of 1 mm or more,
    상기 착색 부재가 적어도 상기 배선부의 상기 광폭 부분에 부분적 또는 전체적으로 중첩되어 상기 배선부의 상기 광폭 부분의 적어도 일부를 가리는 태양 전지 패널. A solar panel in which the colored member partially or completely overlaps at least the wide portion of the wiring portion to cover at least a portion of the wide portion of the wiring portion.
  3. 제2항에 있어서, The method of claim 2,
    상기 착색 부재의 크기가 상기 배선재의 상기 광폭 부분의 크기와 같거나 그보다 큰 태양 전지 패널. The size of the colored member is the same as or larger than the size of the wide portion of the wiring member.
  4. 제2항에 있어서, The method of claim 2,
    상기 착색 부재에 의하여 가려지지 않은 상기 배선재의 상기 광폭 부분의 최대 폭이 1mm 미만인 태양 전지 패널. A solar panel in which a maximum width of the wide portion of the wiring member not covered by the colored member is less than 1 mm.
  5. 제1항에 있어서, The method of claim 1,
    상기 태양 전지가 복수로 구비되어 일 방향을 따라 연장되는 태양 전지 스트링을 구성하고, The solar cell is provided in plural to form a solar cell string extending along one direction,
    상기 배선부가 상기 태양 전지 스트링의 단부에 연결되는 버스 리본을 포함하며, The wiring portion comprises a bus ribbon connected to the end of the solar cell string,
    상기 착색 부재가 상기 버스 리본의 적어도 일부를 가리도록 위치하는 태양 전지 패널. A solar panel positioned so that the colored member covers at least a portion of the bus ribbon.
  6. 제1항에 있어서, The method of claim 1,
    상기 착색 부재와 상기 태양 전지의 채도(saturation) 차이가 10 이하인 태양 전지 패널. A solar panel in which a difference in saturation between the colored member and the solar cell is 10 or less.
  7. 제1항에 있어서, The method of claim 1,
    상기 착색 부재와 상기 태양 전지부의 후면부에 위치한 후면부의 채도 차이가 10 이하인 태양 전지 패널. A solar panel in which a difference in saturation between the coloring member and a rear portion positioned at a rear portion of the solar cell portion is 10 or less.
  8. 제1항에 있어서, The method of claim 1,
    상기 착색 부재가 상기 태양 전지부의 전면과 상기 밀봉재 사이에 위치하는 태양 전지 패널. A solar panel in which the colored member is positioned between the front surface of the solar cell unit and the sealing material.
  9. 제1항에 있어서, The method of claim 1,
    상기 착색 부재는 두께가 1mm 이하인 필름 형태, 시트 형태, 또는 테이프 형태로 구성되는 태양 전지 패널. The colored member is a solar panel having a thickness of 1 mm or less in the form of a film, a sheet, or a tape.
  10. 제1항에 있어서, The method of claim 1,
    상기 제1 커버 부재가 유리 기판으로 포함하고, The first cover member comprises a glass substrate,
    상기 제2 커버 부재가 유리 기판을 포함하는 태양 전지 패널. The solar panel of the second cover member including a glass substrate.
  11. 제1항에 있어서, The method of claim 1,
    상기 커버부에서 적외선 영역의 광에 대한 상기 커버부의 평균 광 투과도인 제1 투과도가 가시광선 영역의 광에 대한 상기 커버부의 평균 광 투과도인 제2 투과도와 같거나 그 보다 더 크거나; 또는 A first transmittance, which is an average light transmittance of the cover part for light in the infrared region of the cover part, is equal to or greater than a second transmittance, which is an average light transmittance of the cover part for light in the visible light region; or
    상기 커버부가 비정질 상태의 유리 구조를 가지는 산화물 세라믹 조성물로 구성되는 태양 전지 패널.A solar panel comprising an oxide ceramic composition having an amorphous glass structure in the cover portion.
PCT/KR2020/004842 2019-07-15 2020-04-09 Solar cell panel WO2021010575A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2019-0085064 2019-07-15
KR1020190085064A KR20210008660A (en) 2019-07-15 2019-07-15 Solar cell panel

Publications (1)

Publication Number Publication Date
WO2021010575A1 true WO2021010575A1 (en) 2021-01-21

Family

ID=74210511

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2020/004842 WO2021010575A1 (en) 2019-07-15 2020-04-09 Solar cell panel

Country Status (2)

Country Link
KR (1) KR20210008660A (en)
WO (1) WO2021010575A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102483215B1 (en) * 2022-08-30 2022-12-30 (주)옥토끼이미징 Solar Power Panel and Manufacturing Method for thereof
KR102563720B1 (en) * 2022-08-30 2023-08-04 (주)옥토끼이미징 Solar Power Exterior Panel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005079170A (en) * 2003-08-28 2005-03-24 Kyocera Corp Solar cell module and its manufacturing method
KR20100120795A (en) * 2009-05-07 2010-11-17 해성쏠라(주) Color ribbons used for solar cell modules and the manufacturing method thereof
KR20130055195A (en) * 2011-11-18 2013-05-28 엘지이노텍 주식회사 Solar cell module and method of fabricating the same
KR101890102B1 (en) * 2018-04-04 2018-08-22 (주) 비제이파워 The photovoltaic module having enhanced power generation amount by forming pattern at front
KR20190010236A (en) * 2017-07-21 2019-01-30 한국과학기술연구원 Flexible thin film solar cells with back side of controllable color

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3717369B2 (en) 2000-04-21 2005-11-16 シャープ株式会社 Solar cell module and manufacturing method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005079170A (en) * 2003-08-28 2005-03-24 Kyocera Corp Solar cell module and its manufacturing method
KR20100120795A (en) * 2009-05-07 2010-11-17 해성쏠라(주) Color ribbons used for solar cell modules and the manufacturing method thereof
KR20130055195A (en) * 2011-11-18 2013-05-28 엘지이노텍 주식회사 Solar cell module and method of fabricating the same
KR20190010236A (en) * 2017-07-21 2019-01-30 한국과학기술연구원 Flexible thin film solar cells with back side of controllable color
KR101890102B1 (en) * 2018-04-04 2018-08-22 (주) 비제이파워 The photovoltaic module having enhanced power generation amount by forming pattern at front

Also Published As

Publication number Publication date
KR20210008660A (en) 2021-01-25

Similar Documents

Publication Publication Date Title
WO2020166999A1 (en) Solar cell panel
JP6986037B2 (en) Solar panel
KR20190106689A (en) Solar cell panel
JP7283877B2 (en) solar panel
WO2021010575A1 (en) Solar cell panel
WO2021002570A1 (en) Method for manufacturing graphic cover substrate for solar panel, solar panel and manufacturing method therefor
WO2021040211A2 (en) Solar cell module having excellent visibility
WO2016105026A1 (en) Method for manufacturing light extraction substrate for organic light emitting diode, light extraction substrate for organic light emitting diode, and organic light emitting diode comprising same
US11018274B2 (en) Solar cell panel
WO2021060788A1 (en) Graphic cover substrate for solar panel, method for manufacturing same, and solar panel
WO2016105027A1 (en) Method for manufacturing light extraction substrate for organic light emitting diode, light extraction substrate for organic light emitting diode, and organic light emitting diode comprising same
KR20220135060A (en) Solar cell panel
WO2019225874A1 (en) Infrared reflective film and manufacturing method thereof
KR20210092034A (en) Solar cell panel
WO2021241861A1 (en) Method for manufacturing light-shielding fabric and light-shielding fabric manufactured thereby
CN113809194A (en) Layer containing effect pigments and scattering additives
KR20210092626A (en) Solar cell panel
KR20220129900A (en) Solar cell panel
KR102266581B1 (en) Solar cell module and manufacturing method thereof
CN117486499A (en) High-transmittance solar cell front plate glass and preparation method thereof
DK179912B1 (en) Solar Module
JP6661664B2 (en) Solar cell module
WO2020085705A1 (en) Infrared reflective film and manufacturing method therefor
KR20240047423A (en) Layer containing effect pigments and scattering additives
JP2022548658A (en) Processing method of transparent cover plate and cover plate

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20841418

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20841418

Country of ref document: EP

Kind code of ref document: A1