WO2019243002A1 - Module photovoltaïque et son procédé de fabrication - Google Patents

Module photovoltaïque et son procédé de fabrication Download PDF

Info

Publication number
WO2019243002A1
WO2019243002A1 PCT/EP2019/063729 EP2019063729W WO2019243002A1 WO 2019243002 A1 WO2019243002 A1 WO 2019243002A1 EP 2019063729 W EP2019063729 W EP 2019063729W WO 2019243002 A1 WO2019243002 A1 WO 2019243002A1
Authority
WO
WIPO (PCT)
Prior art keywords
photovoltaic
photovoltaic module
cover layer
fabric
photovoltaic element
Prior art date
Application number
PCT/EP2019/063729
Other languages
German (de)
English (en)
Inventor
Peter Chabrecek
Dario BUZZIOL
Matthias Meissner
Original Assignee
Sefar Ag
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 Sefar Ag filed Critical Sefar Ag
Publication of WO2019243002A1 publication Critical patent/WO2019243002A1/fr

Links

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
    • H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/067—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10018—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising only one glass sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • H01L31/04—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/712—Weather resistant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/12—Photovoltaic modules
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/52—PV systems with concentrators

Definitions

  • the invention relates to a photovoltaic module with a flat base support, at least one photovoltaic element attached to it, a conductor arrangement for electrically contacting the at least one photovoltaic element and a transparent cover layer, the at least one photovoltaic element and the conductor arrangement being arranged between the base support and the cover layer and form a unit, according to the preamble of claim 1.
  • the invention also relates to a method for producing such a photovoltaic module according to the preamble of claim 11.
  • Photovoltaic modules have long been known as so-called solar cells. These generally consist of a large number of photovoltaic elements which have optoelectrical surface elements which lead to an electrical charge separation in the event of light. In this way, light energy can be converted into electrical energy, which can be dissipated and used by means of a conductor track arrangement.
  • Such photovoltaic modules are used, for example, on buildings, in particular on the roof or on walls.
  • photovoltaic modules have a dark or metallic bluish shimmering surface, which is often perceived as annoying. This can limit the use and also the extent of the use of photovoltaic modules. It is known to print a pattern on a surface of existing photovoltaic modules or to provide a pattern with an adhesive film in order to improve the overall optical impression of a photovoltaic module or to adapt it to an architecture in a desired manner.
  • a photovoltaic module is known in which the actual optoelectronically active photovoltaic element is electrically contacted by means of a fabric with metallically conductive threads as conductor tracks.
  • the invention is based on the object of specifying a photovoltaic module which is particularly flexible and efficiently adaptable in its external appearance. It is also an object to specify a method for producing such a photovoltaic mode.
  • the photovoltaic module according to the invention is characterized in that a sample carrier is arranged between the at least one photovoltaic element and the transparent cover layer and that the sample carrier is designed as an open-mesh fabric.
  • a flat base support which receives and holds one or more photovoltaic elements with an associated conductor track arrangement for the electrical contacting and dissipation of the generated electrical energy.
  • a transparent cover layer which is preferably a glass pane or a transparent plastic layer, is provided on the top side of the at least one photovoltaic element that is exposed to light.
  • the photovoltaic module is designed as an integrated unit. According to the invention, provision is made here for a sample carrier to be provided between the transparent cover layer and the at least one photovoltaic element on a surface side exposed to the light, which is designed according to the invention as an open-mesh fabric.
  • Such an open-mesh fabric also allows a relatively good passage of light, in particular with an essentially vertical angle of incidence of the light.
  • the optical impression of the photovoltaic module for the viewer is noticeably changed by a tissue provided in this way. This applies both to an essentially frontal view of the photovoltaic module and in particular to a viewing angle at an angle to the surface of the photovoltaic module.
  • the visual impression can be influenced by an appropriate selection of the type, size and color of the threads with which the fabric is produced.
  • a particularly preferred development of the invention consists in the pattern carrier being designed to receive a pattern and / or a color. In this way, the overall visual impression can be changed and influenced in a particularly varied and flexible manner.
  • the pattern and / or the color is applied as a layer on an upper side of the fabric, which faces the transparent cover layer.
  • This upper side is particularly important for the optical impression of the photovoltaic module according to the invention.
  • a particularly expedient embodiment of the invention is that the layer is also applied to the fabric by printing, coating or metallizing. In this way, a coating can be created in a particularly economical manner. Since the sample carrier coated in this way is protected by the overlying transparent cover layer, the sample carrier designed in this way is particularly weather-resistant.
  • an underside of the fabric which faces the at least one photovoltaic element, to be reflective, in particular white.
  • the energy yield of the preferably several photovoltaic elements can be improved. Because light emitted from a surface of the photovoltaic elements can do so are at least partially reflected back from the underside of the fabric lying thereon and can thus contribute to energy generation. In addition, unwanted reflections and reflections from a photovoltaic module can be efficiently reduced through the applied fabric.
  • the fabric can be formed from corresponding reflective or white threads, which are then provided with the layer for the pattern and / or the color only on their upper side.
  • the patterns and colors for application to the sample carrier can be chosen almost arbitrarily. Patterns can be understood to mean not only repeating patterns, but also pictures, letters or numbers and also overall uniform or changing colored areas. Color can also be understood to mean a metallic coating.
  • the sample carrier is electrically insulated from the at least one photovoltaic element, so that it does not impair the conductor track arrangement, which is preferably arranged on the rear side of the at least one photovoltaic element facing the base carrier.
  • the conductor track arrangement itself is designed as a fabric with at least partially electrically conductive threads. In particular, such a fabric can be formed with transparent threads, so that the conductor track arrangement is not or hardly visible.
  • An essentially transparent woven conductor track arrangement can also be arranged on an upper side of the at least one photovoltaic element provided for the incidence of light.
  • the sample carrier is then on the conductor track arrangement or is formed together with it.
  • the fabric can be made from any thread, in particular also from multifilament threads.
  • the fabric is woven from monofilament threads which are formed from a plastic.
  • the monofilament threads can have a diameter between 20 ⁇ m and 500 ⁇ m, in particular between 50 ⁇ m and 300 ⁇ m.
  • the monofilament threads can be provided in the weft and / or in the warp direction.
  • any suitable plastic for forming the threads can be provided.
  • the plastic comprises PET, PEN, PP, PEEK, PPS or a fluorine-containing polymer. These materials are particularly weather-resistant and show little shrinkage even when used for long periods in exposed light.
  • the tissue has an openness of between 25% and 80%, preferably between 50% and 80%. This means that there is 25% to 80% openings in the fabric of an illuminated area, while the rest is occupied by the threads. With this degree of openness, good stability is achieved in a preferably single-layer fabric with a simultaneous high degree of light transmission and the receptivity for a pattern and / or color.
  • an adhesive film is provided between the base carrier and the at least one photovoltaic element and / or between the photovoltaic element and the sample carrier and / or between the sample carrier and the cover layer is.
  • an adhesive layer can also be applied. The film or the layer can harden in a connection step to form a firm connection.
  • the photovoltaic module is designed as a plate element which comprises at least one outer frame element.
  • the frame can be arranged in regions or along the entire circumference of the photovoltaic module.
  • a total of surfaces, such as roofs or walls, can be partially or completely covered with the plate-shaped photovoltaic module.
  • the photovoltaic module can thus be used specifically as an architectural or design element.
  • the invention also includes a method for producing the photovoltaic module according to the invention described above.
  • At least one photovoltaic element and a conductor track arrangement for electrically contacting the at least one photovoltaic element are arranged on a base carrier. It is further provided that a sample carrier, which is designed as a fabric, is applied to the at least one photovoltaic element before applying a transparent cover layer. The fabric can also be integrated into the transparent cover layer.
  • the drawing figure shows an enlarged schematic cross section through a photovoltaic module 10 according to the invention.
  • the photovoltaic module 10 has a plate-shaped base support 12, to which a conductor track arrangement 22 with electrical conductor tracks is applied by means of an adhesive film 14.
  • Several photovoltaic elements 20 are arranged on the conductor track arrangement 22 in such a way that electrical charges which form when light is incident can be dissipated as electrical energy via the conductor track arrangement 22.
  • the photovoltaic elements 20 are in particular soldered to the conductor track arrangement 22 or electrically contacted in some other way.
  • a schematically illustrated open-mesh fabric 32 is placed on the photovoltaic elements 20 as a sample carrier 30.
  • a pattern is applied to an upper side 34 of the fabric 32.
  • the monofilament threads forming the fabric 32 can be white or black on an underside 36 of the fabric.
  • the underside 36 of the preferably single-layer fabric 32 can rest directly on the photovoltaic elements 20 or with the interposition of a further adhesive film, not shown here.
  • An upper side of the photovoltaic module 10 according to the invention is closed by a transparent cover layer 18, which can be a glass or a transparent plastic, for the light to enter.
  • An attachment of the transparent cover layer 18 can also be done by means of an adhesive film.
  • adhesive films liquid or solidly applied adhesive layers can also be provided.
  • the individual layers can be firmly connected to one another by a lamination process, for example under the influence of heat. This enables them to form a unit. Alternatively or additionally, all or individual layers can also be held together to form a unit, which is attached along an outer circumference of the photovoltaic module 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Textile Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

L'invention concerne un module photovoltaïque ayant un support de base plat, au moins un élément photovoltaïque fixé à celui-ci, un dispositif de piste conductrice pour mettre électriquement en contact au moins un élément photovoltaïque et une couche de recouvrement transparente, l'élément photovoltaïque et le dispositif de piste conductrice étant disposés entre le support de base et la couche de recouvrement et formant une unité. Un support de motif est disposé entre l'au moins un élément photovoltaïque et la couche de recouvrement transparente et le support de motif est réalisé sous la forme d'un tissu à mailles ouvertes.
PCT/EP2019/063729 2018-06-19 2019-05-28 Module photovoltaïque et son procédé de fabrication WO2019243002A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202018103447.2U DE202018103447U1 (de) 2018-06-19 2018-06-19 Photovoltaikmodul
DE202018103447.2 2018-06-19

Publications (1)

Publication Number Publication Date
WO2019243002A1 true WO2019243002A1 (fr) 2019-12-26

Family

ID=66690343

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/063729 WO2019243002A1 (fr) 2018-06-19 2019-05-28 Module photovoltaïque et son procédé de fabrication

Country Status (2)

Country Link
DE (1) DE202018103447U1 (fr)
WO (1) WO2019243002A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114784137A (zh) * 2021-06-19 2022-07-22 北京劲吾新能源科技有限公司 一种在光伏晶片上印制色彩的方法及其应用

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT522994A1 (de) * 2019-09-18 2021-04-15 Lenzing Plastics Gmbh & Co Kg Photovoltaikelement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080006323A1 (en) * 2006-07-08 2008-01-10 Kalkanoglu Husnu M Photovoltaic Module
DE102008055973A1 (de) * 2008-08-05 2010-02-11 Sefar Ag Flächenstück sowie Verfahren zu dessen Herstellung
DE202014104008U1 (de) * 2013-08-29 2014-09-30 Fuchi Textile Co., Ltd. Flexible Photovoltaikvorrichtung
EP2790196A1 (fr) 2013-04-09 2014-10-15 Sefar AG Substrat conducteur d'électricité pour un dispositif opto-électrique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9281186B2 (en) * 2011-03-31 2016-03-08 Ats Automation Tooling Systems Inc. Colored photovoltaic modules and methods of construction
CN205564775U (zh) * 2015-11-25 2016-09-07 江苏斯威克新材料有限公司 新型高反射率eva封装胶膜

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080006323A1 (en) * 2006-07-08 2008-01-10 Kalkanoglu Husnu M Photovoltaic Module
DE102008055973A1 (de) * 2008-08-05 2010-02-11 Sefar Ag Flächenstück sowie Verfahren zu dessen Herstellung
EP2790196A1 (fr) 2013-04-09 2014-10-15 Sefar AG Substrat conducteur d'électricité pour un dispositif opto-électrique
DE202014104008U1 (de) * 2013-08-29 2014-09-30 Fuchi Textile Co., Ltd. Flexible Photovoltaikvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114784137A (zh) * 2021-06-19 2022-07-22 北京劲吾新能源科技有限公司 一种在光伏晶片上印制色彩的方法及其应用

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