WO2014115837A1 - Verre protecteur destiné à une pile solaire et module de piles solaires - Google Patents

Verre protecteur destiné à une pile solaire et module de piles solaires Download PDF

Info

Publication number
WO2014115837A1
WO2014115837A1 PCT/JP2014/051492 JP2014051492W WO2014115837A1 WO 2014115837 A1 WO2014115837 A1 WO 2014115837A1 JP 2014051492 W JP2014051492 W JP 2014051492W WO 2014115837 A1 WO2014115837 A1 WO 2014115837A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass
solar cell
cover glass
glass plate
main surface
Prior art date
Application number
PCT/JP2014/051492
Other languages
English (en)
Japanese (ja)
Inventor
裕介 小林
幸史 桶谷
忠久 金杉
哲 菊地
泰子 一山
小島　浩士
Original Assignee
旭硝子株式会社
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 旭硝子株式会社 filed Critical 旭硝子株式会社
Priority to CN201480005393.3A priority Critical patent/CN104936915A/zh
Priority to JP2014558629A priority patent/JP5812210B2/ja
Publication of WO2014115837A1 publication Critical patent/WO2014115837A1/fr

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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
    • C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to a cover glass for a solar cell and a solar cell module, and more particularly to a cover glass for a solar cell that can achieve reduction of damage in long-term use even if the plate thickness is thin due to a chemical strengthening treatment, and the sun using the same
  • the present invention relates to a battery module.
  • a plan for a solar power plant with a large number of solar cell modules installed on a vast site is underway. For example, in a solar power plant of several tens MW class described in the planning stage, 100,000 or more solar cell modules may be installed.
  • a thickness of about 3 mm has been conventionally used, but in recent years, a thickness of about 1 mm has been proposed.
  • the solar cell module is used outdoors, and many scratches can occur on the surface of the cover glass in the process of outdoor installation for many years. Therefore, even if the strength against various events is secured at the initial stage, the strength may not be sufficiently secured after long-term use.
  • a glass plate of 1.5 mm or less subjected to chemical strengthening treatment has strength as a cover glass for solar cells after such a long period of time has passed.
  • the present invention has an object to provide a cover glass for a solar cell that contributes to weight reduction for wiping out concerns 1 and 2 in installation, and that takes into account changes over time.
  • the present invention relates to a solar cell cover glass having a glass plate having first and second main surfaces and an end surface interposed between the first and second main surfaces.
  • the glass plate has a thickness of 0.5 to 1.5 mm and is chemically strengthened.
  • the surface compressive stress value of the main surface is 400 to 1000 MPa, and the thickness of the compressive stress layer on the main surface in the thickness direction is 15 to 50 ⁇ m,
  • the glass plate provides a cover glass for a solar cell, characterized in that a concentric bending strength obtained by the following method is 30 kgf or more: (1) Obtain a square glass piece having a length of 50 mm and a width of 50 mm in plan view from the glass plate, (2) A square 400 mm of 10 mm ⁇ 10 mm along a line translated from the center line in the horizontal direction of the glass piece up and down by 10 mm each and 3 mm to the right from the center line in the vertical direction.
  • the sandpaper of the count is reciprocated three times with a load of 1.5 kgf to form a rubbing line having a length of 20 mm in the vertical direction on the first main surface, (3) On the support ring having a diameter of 30 mm, the first main surface of the glass piece is in contact with the support ring, and the glass piece and the center point of the support ring overlap so that the glass piece is placed on the support ring. Installed in (4) A load ring having a diameter of 10 mm is placed on the glass piece so that the center points of the two overlap. (5) When a load is applied to the glass piece from the load ring side at 1 mm / min, the load at which the glass piece is broken is defined as a concentric bending strength.
  • this invention provides a solar cell module provided with such a cover glass for solar cells.
  • a cover glass for a solar cell that contributes to weight reduction for wiping out the concerns 1 and 2 in installation, and has ensured strength after long-term use.
  • FIG. 2A shows a state in which rubbing lines are formed on the glass piece
  • FIG. 2B shows a state in which a load is applied to the glass piece.
  • FIG. 2A shows a state in which rubbing lines are formed on the glass piece
  • FIG. 2B shows a state in which a load is applied to the glass piece.
  • FIG. 1 is a perspective view showing an example of the cover glass for a solar cell of the present invention.
  • the solar cell cover glass 1 is composed of a glass plate 10 having a thickness t of 0.5 to 1.5 mm.
  • the glass plate 10 has the 1st and 2nd main surfaces 11a and 11b and the end surface 12 interposed between the main surfaces 11a and 11b.
  • the glass plate 10 is a chemically strengthened glass plate having a compressive stress layer of 15 to 50 ⁇ m in the plate thickness direction on the main surfaces 11a and 11b.
  • the compressive stress values of the main surfaces 11a and 11b are 400 to 1000 MPa.
  • this glass plate 10 is a glass plate having a high bending strength after a predetermined scratch is applied to the main surface 11a. That is, in this glass plate 10, a glass piece cut out to 50 mm in length and 50 mm in width has a predetermined concentric bending strength.
  • the predetermined concentric bending strength will be described with reference to FIG.
  • FIG. 2 is a diagram schematically showing a method for measuring the concentric bending strength of a glass piece.
  • FIG. 2A shows a state in which rubbing lines are formed on the glass piece
  • FIG. 2B shows a state in which a load is applied to the glass piece.
  • a square glass piece 100 having a length of 50 mm and a width of 50 mm in a plan view is collected from the glass plate 10.
  • the glass piece 100 is cut out so that, for example, the front view center point of the glass plate 10 becomes the center point of the glass piece 100.
  • the glass piece 100 is placed on the support ring 30 having a diameter of 30 mm.
  • the glass piece 100 is placed on the support ring 30 such that the first main surface 11a of the glass piece 100 is in contact with the support ring 30 and the center points of the glass piece 100 and the support ring 30 are overlapped. Is done.
  • a load ring 40 having a diameter of 10 mm is placed on the glass piece 100 (second main surface thereof). At this time, the load ring 40 is installed on the glass piece 100 so that both center points of the glass piece 100 and the load ring 40 overlap.
  • a load is applied to the glass piece 100 from the load ring 40 side at a rate of 1 mm / min.
  • the load at which the glass piece 100 is broken by this load application is defined as a concentric bending strength.
  • the glass plate 10 has a feature that the concentric bending strength measured by this method is 30 kgf or more.
  • the principle that it is beneficial to use a glass plate having such a predetermined strength for the cover glass of the present invention will be described.
  • conventionally scratches that may occur on the main surface of the glass plate as a result of long-term use have not been fully considered.
  • the present inventors have found that the glass plate of the present invention is suitable for a cover glass for a solar cell.
  • the cover glass itself has rigidity, so that the deflection due to a static load such as wind or snow can be suppressed.
  • the plate thickness is 1.5 mm or less, the deflection due to these static loads increases. As a result, since the main surface is scratched, the cover glass is easily broken starting from the scratch.
  • the solar cell module itself can be structured to reduce the deflection of the cover glass by attaching a frame to the periphery or a reinforcing rail on the back side.
  • the weight increases due to the addition of these reinforcing members, and the effect of thinning the cover glass is reduced.
  • the strength of the cover glass after long-term use can be maintained without adding an excessive reinforcing member by using a glass plate having a high bending strength after applying a predetermined scratch like the cover glass of the present invention.
  • the solar cell module using the cover glass of the present invention exhibits good durability without using an excessive reinforcing member.
  • the solar cell module using the cover glass of the present invention clears JIS C8990 “mechanical load test” and exhibits good durability against wind and snow even after long-term use.
  • the glass plate in the present invention is preferably a glass plate in which the above glass piece has a concentric circular bending strength of 70 kgf or more.
  • a bending strength equal to or higher than the bending strength of the cover glass obtained when a glass plate having a thickness of about 3 mm is used can be obtained.
  • the glass plate of the present invention preferably has a surface compressive stress value of 550 to 800 MPa on the main surface and a thickness in the plate thickness direction of the compressive stress layer on the main surface of 20 to 45 ⁇ m. This is because if the surface compressive stress value of the main surface and the thickness of the compressive stress layer on the main surface in the thickness direction are too large, the internal tensile stress value becomes excessively large. In other words, in addition to the occurrence of scratches during long-term use, sharp objects may collide strongly with the cover glass due to falling rocks, stones, or traps. Such a collision of the object causes a crack that penetrates the compressive stress layer of the main surface. At that time, if the internal tensile stress is too large, the fracture is likely to proceed. From this point, the tensile stress value inside the glass plate in the present invention is preferably 10 to 60 MPa.
  • the area of the main surface is 1 m 2 or more to exhibit the effects of the present invention. That is, if the area of the solar cell module increases, the absolute value of deflection tends to increase. Therefore, if it is a conventional glass plate, the reinforcing member necessary to suppress such deflection becomes excessive, but if it is a glass plate in the present invention, the bending strength after long-term use, that is, after scratches are added Therefore, it is not necessary to increase the number of reinforcing members.
  • the thickness of the glass plate in the present invention is 0.7 to 1.2 mm, and further less than 1.0 mm, as an effect of the present invention. That is, if the thickness of the glass plate decreases, the absolute value of the deflection tends to increase. Therefore, if it is a conventional glass plate, the reinforcing member necessary to suppress such deflection becomes excessive, but if it is a glass plate in the present invention, the bending strength after long-term use, that is, after scratches are added Therefore, it is not necessary to increase the number of reinforcing members.
  • the glass plate in the present invention may have a compressive stress layer formed on the end surface as well as the main surface.
  • the compressive stress layer may not exist on the end face.
  • the compressive stress in this invention is uniformly formed in the main surface direction of the glass plate, it may have distribution within a surface. According to the above chemical strengthening treatment, compressive stress can be obtained almost uniformly except for treatment unevenness. Therefore, when measuring various values related to compressive stress, the center of the main surface (a point where diagonal lines intersect when the glass plate is rectangular, or a point corresponding to this when the glass plate is not rectangular) may be used as a representative point.
  • the method of chemical strengthening treatment for obtaining the glass plate in the present invention is not particularly limited as long as it can ion-exchange Na in the glass surface layer and K in the molten salt, but for example, heated potassium nitrate molten salt
  • the method of immersing glass is mentioned.
  • potassium nitrate molten salt, or potassium nitrate salts in the present invention other KNO 3, including those containing KNO 3 and 10 wt% or less of NaNO 3.
  • the chemical strengthening treatment conditions for forming a compressive stress layer having a desired surface compressive stress on glass vary depending on the thickness of the glass plate, but the glass substrate is immersed in molten potassium nitrate at 350 to 550 ° C. for 2 to 20 hours. It is typical. From an economical point of view, it is preferable to immerse under conditions of 350 to 500 ° C. and 2 to 16 hours, and a more preferable immersion time is 2 to 10 hours.
  • the method for producing the glass plate in the present invention there are no particular restrictions on the method for producing the glass plate in the present invention. For example, an appropriate amount of various raw materials are prepared, heated to about 1400-1800 ° C. and melted, and then homogenized by defoaming, stirring, etc. It is manufactured by forming into a plate shape by a downdraw method, a press method, etc., and then cooling to a desired size after slow cooling.
  • the glass transition point Tg of the glass of the glass plate in this invention is 400 degreeC or more. Thereby, relaxation of the surface compressive stress during ion exchange can be suppressed. More preferably, it is 550 degreeC or more.
  • the temperature T2 at which the viscosity of the glass of the glass plate in the present invention is 10 2 dPa ⁇ s is preferably 1800 ° C. or lower, more preferably 1750 ° C. or lower.
  • the temperature T4 at which the viscosity of the glass in the present invention is 10 4 dPa ⁇ s is preferably 1350 ° C. or lower.
  • the specific gravity ⁇ of the glass plate in the present invention is preferably 2.37 to 2.55.
  • the Young's modulus E of the glass plate in the present invention is preferably 65 GPa or more. As a result, the rigidity and breaking strength of the glass cover glass are sufficient.
  • the Poisson's ratio ⁇ of the glass plate in the present invention is preferably 0.25 or less. As a result, the scratch resistance of the glass, particularly the scratch resistance after long-term use, is sufficient.
  • the glass plate in the present invention is preferably made of the following glass because it is easy to perform chemical strengthening treatment: Expressed in terms of mole percentage based on oxide, SiO 2 is 56 to 75%, Al 2 O 3 is 5 to 20%, Na 2 O is 8 to 22%, K 2 O is 0 to 10%, MgO is 0 to 14 %, ZrO 2 0-5%, CaO 0-5% glass. In the following, percentage display refers to the content expressed in mole percentage unless otherwise specified.
  • SiO 2 is a component that constitutes the skeleton of glass and is essential, and reduces the occurrence of cracks when scratches (indentations) are made on the glass surface, or the fracture rate when indentations are made after chemical strengthening. It is a component to make small.
  • SiO 2 content is less than 56%, the stability, weather resistance or chipping resistance of the glass is lowered.
  • SiO 2 is preferably 58% or more, more preferably 60% or more. If SiO 2 exceeds 75%, the viscosity of the glass increases and the meltability decreases.
  • Al 2 O 3 is an effective component for improving ion exchange performance and chipping resistance, and is a component that increases the surface compressive stress, or a component that decreases the crack generation rate when indented with a 110 ° indenter. And essential. If Al 2 O 3 is less than 5%, a desired surface compressive stress value or compressive stress layer thickness cannot be obtained by ion exchange. Preferably it is 9% or more. If Al 2 O 3 exceeds 20%, the viscosity of the glass becomes high and uniform melting becomes difficult. Al 2 O 3 is preferably 15% or less, typically 14% or less.
  • the total SiO 2 + Al 2 O 3 content of SiO 2 and Al 2 O 3 is preferably 80% or less. If it exceeds 80%, the viscosity of the glass at high temperature may increase and melting may be difficult, and it is preferably 79% or less, more preferably 78% or less. Further, it is preferable that SiO 2 + Al 2 O 3 is 70% or more. If it is less than 70%, the crack resistance when an indentation is made decreases, more preferably 72% or more.
  • Na 2 O is a component that forms a surface compressive stress layer by ion exchange and improves the meltability of the glass, and is essential. If Na 2 O is less than 8%, it becomes difficult to form a desired surface compressive stress layer by ion exchange, and it is preferably 10% or more, more preferably 11% or more. If Na 2 O exceeds 22%, the weather resistance is lowered, or cracks are likely to occur from the indentation. Preferably it is 21% or less.
  • K 2 O is not essential, but may be contained in a range of 10% or less in order to increase the ion exchange rate. If it exceeds 10%, cracks are likely to occur from the indentation, or the change in surface compressive stress due to the concentration of NaNO 3 in the molten potassium nitrate salt may increase.
  • K 2 O is preferably 5% or less, more preferably 0.8% or less, still more preferably 0.5% or less, and typically 0.3% or less. When it is desired to reduce the change in the surface compressive stress due to the NaNO 3 concentration in the potassium nitrate molten salt, it is preferable not to contain K 2 O.
  • MgO is a component that increases the surface compressive stress and is a component that improves the meltability and is essential. When it is desired to suppress stress relaxation, it is preferable to contain MgO. When MgO is not contained, the degree of stress relaxation tends to change depending on the location of the chemical strengthening treatment tank due to variations in the molten salt temperature when performing chemical strengthening treatment, and as a result, a stable compressive stress value can be obtained. May be difficult. On the other hand, if MgO exceeds 14%, the glass tends to be devitrified, or the change in surface compressive stress due to the concentration of NaNO 3 in the potassium nitrate molten salt may increase, and it is preferably 13% or less.
  • the preferred glass component of the glass plate in the present invention consists essentially of the components described above, but may contain other components as long as the object of the present invention is not impaired. When such components are contained, the total content of these components is preferably less than 2%, more preferably 1% or less.
  • the other components will be described as an example.
  • ZnO may be contained up to 2%, for example, in order to improve the melting property of the glass at a high temperature, but is preferably 1% or less, and 0.5% or less in the case of manufacturing by a float process. It is preferable to make it. If ZnO exceeds 0.5%, it may be reduced during float molding, resulting in a product defect. Typically no ZnO is contained. Since TiO 2 coexists with Fe ions present in the glass, the visible light transmittance is lowered and the glass may be colored brown, so even if it is contained, it is preferably 1% or less. Does not contain.
  • Li 2 O is a component that lowers the strain point to facilitate stress relaxation, and as a result makes it impossible to obtain a stable surface compressive stress layer, so it is preferably not contained, and even if it is contained, its content Is preferably less than 1%, more preferably 0.05% or less, and particularly preferably less than 0.01%.
  • Li 2 O may be eluted in a molten salt such as KNO 3 during chemical strengthening treatment, but when the chemical strengthening treatment is performed using a molten salt containing Li, the surface compressive stress is remarkably reduced. Li 2 O is preferably not contained from this viewpoint.
  • CaO may be contained in a range of 5% or less in order to improve the meltability at high temperature or to prevent devitrification. If the CaO content exceeds 5%, the ion exchange rate or the resistance to cracking decreases. Typically no CaO is contained. SrO may be contained as necessary, but since the effect of lowering the ion exchange rate is greater than that of MgO and CaO, the content is preferably less than 1% even when contained. Typically no SrO is contained. Since BaO has the greatest effect of reducing the ion exchange rate among alkaline earth metal oxides, BaO should not be contained, or even if contained, its content should be less than 1%. preferable.
  • the total content thereof is preferably 1% or less, more preferably less than 0.3%.
  • the total content of these four components is preferably less than 1.5%. If the total is 1.5% or more, the ion exchange rate may be lowered, and is typically 1% or less.
  • the present invention provides a solar cell module using the above glass plates as follows.
  • a solar cell module comprising a plurality of solar cells, a sealing material that seals the solar cells, and a first cover glass that is disposed to face at least one surface of the sealing material
  • the solar cell module wherein the first cover glass is a solar cell cover glass using the above glass plates.
  • each glass plate as a cover glass on both sides of the solar cell module.
  • the first cover glass made of each glass plate 10 a and the second cover glass made of each glass plate 10 b are laminated via a sealing material 22.
  • a plurality of solar cells 23 are enclosed in the sealing material 22.
  • Such a solar cell module of the present invention can be suitably used for a factory roof, a roof of a public transportation station building such as a railroad, and a solar power plant often found in a coastal area.
  • a solar power plant often found in a coastal area.
  • sand, dust, salt, and the like frequently fly in factories, stations, and coastal areas, and as a result of installation over a long period of time, many scratches are likely to occur on the main surface of the glass plate.
  • the weight reduction of solar cell modules is strongly demanded for factory roofs, railway station roofs, and solar power plants as mentioned in points 1 and 2 above.
  • the station building here includes a stop, an airport, and a port.
  • the solar cell module of the present invention having the structure in which the end face of the cover glass is exposed can achieve the weight reduction of the entire solar cell module. This is not as simple as reducing the number of parts to achieve weight reduction. That is, such a configuration can be realized by using a cover glass having sufficient strength that does not require a frame around the solar cell module that functions as a reinforcing member.
  • Example 1 is a glass plate according to the cover glass of the present invention
  • Examples 2 to 4 are glass plates according to comparative examples.
  • the glass plates of Examples 1 and 2 are chemically strengthened glass plates.
  • the type of glass plate of Example 1 is LEOFLEX (registered trademark) manufactured by Asahi Glass Co., Ltd., and each reinforced physical property obtained as a result of the chemical strengthening treatment is adjusted to the value shown in the column of “Example 1” in Table 1. is there.
  • the type of the glass plate of Example 2 is soda lime silica glass, and each reinforced physical property obtained as a result of the chemical strengthening treatment is adjusted to the value shown in the column of “Example 2” in Table 1.
  • the surface compressive stress CS (unit: MPa) of the main surface and the thickness DOL (unit: ⁇ m) of the compressive stress layer on the main surface are measured with a surface stress meter FSM-6000 manufactured by Orihara Seisakusho. did. Moreover, internal tensile stress CT (unit: MPa) was calculated from these values.
  • the kind of glass plate of Examples 3 and 4 is soda-lime silica glass.
  • the measured load is the concentric bending strength (unit: kgf).
  • the glass plate of Example 1 has a bending strength greater than the average value of the concentric bending strength before forming the rubbing line of the glass plate of Example 2 because the concentric bending strength after forming the rubbing line is 70 kgf or more. is there. That is, like the glass plate of Example 2, by providing a certain strength at the initial stage, it may be possible to obtain a cover glass that can reduce the plate thickness and achieve weight reduction. On the other hand, it can be said that the glass plate of Example 1 has sufficient strength even after scratches are formed as a result of long-term use. Furthermore, the glass plate of Example 1 is more than the bending strength after a flaw is formed as a result of long-term use of a glass plate having a large plate thickness like the glass plate of Example 4. As described above, the glass plate of Example 1 has bending strength after long-term use that is comparable to a glass plate having a large thickness even if the thickness is reduced in order to reduce the weight of the solar cell module.
  • the cover glass for a solar cell of the present invention wipes away the concerns at the time of installing the solar cell module, is lightweight, and can secure strength even when installed outdoors for a long period of time.

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Glass Compositions (AREA)
  • Surface Treatment Of Glass (AREA)
  • Photovoltaic Devices (AREA)

Abstract

La présente invention concerne un verre protecteur destiné à une pile solaire possédant une plaque en verre possédant des première et seconde surfaces principales et des surfaces de bord disposées entre les première et seconde surfaces principales, le verre protecteur destiné à une pile solaire étant caractérisé en ce que la plaque de verre possède une épaisseur de plaque de 0,5 à 1,5 mm et qu'elle a été soumise à un traitement de renforcement chimique, les surfaces principales possèdent une valeur de contrainte de compression de surface de 400 à 1 000 MPa, l'épaisseur dans le sens de l'épaisseur de plaque d'une couche de contrainte de compression sur les surfaces principales va de 15 à 50 µm et la plaque en verre possède une résistance à la flexion circulaire concentrique d'au moins 30 kgf.
PCT/JP2014/051492 2013-01-24 2014-01-24 Verre protecteur destiné à une pile solaire et module de piles solaires WO2014115837A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201480005393.3A CN104936915A (zh) 2013-01-24 2014-01-24 太阳能电池用覆盖玻璃及太阳能电池模块
JP2014558629A JP5812210B2 (ja) 2013-01-24 2014-01-24 太陽電池用カバーガラスおよび太陽電池モジュール

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013010834 2013-01-24
JP2013-010834 2013-01-24

Publications (1)

Publication Number Publication Date
WO2014115837A1 true WO2014115837A1 (fr) 2014-07-31

Family

ID=51227626

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/051492 WO2014115837A1 (fr) 2013-01-24 2014-01-24 Verre protecteur destiné à une pile solaire et module de piles solaires

Country Status (4)

Country Link
JP (1) JP5812210B2 (fr)
CN (1) CN104936915A (fr)
TW (1) TW201442973A (fr)
WO (1) WO2014115837A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2985267A4 (fr) * 2013-04-12 2016-11-09 Asahi Glass Co Ltd Plaque de verre renforcée chimiquement pour usage extérieur
CN107311448B (zh) * 2017-07-21 2020-05-12 厦门大学 一种复眼式太阳能电池封装玻璃及其制备方法和应用

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010116276A (ja) * 2008-11-11 2010-05-27 Nippon Electric Glass Co Ltd 強化ガラス基板及びその製造方法
WO2011114821A1 (fr) * 2010-03-19 2011-09-22 石塚硝子株式会社 Composition de verre pour renforcement chimique et matériau en verre chimiquement renforcé
JP2012076994A (ja) * 2007-01-16 2012-04-19 Nippon Electric Glass Co Ltd 強化ガラス基板の製造方法及び強化ガラス基板
JP2012089403A (ja) * 2010-10-21 2012-05-10 Sony Corp 太陽電池及び太陽電池の製造方法
WO2012099053A1 (fr) * 2011-01-18 2012-07-26 日本電気硝子株式会社 Verre trempé et plaque de verre trempé
JP2012148955A (ja) * 2010-09-30 2012-08-09 Avanstrate Inc カバーガラスの製造方法及びカバーガラス
JP2012180262A (ja) * 2011-02-10 2012-09-20 Nippon Electric Glass Co Ltd 強化ガラス板
JP2012236760A (ja) * 2007-08-03 2012-12-06 Nippon Electric Glass Co Ltd 強化ガラス基板及びその製造方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012076994A (ja) * 2007-01-16 2012-04-19 Nippon Electric Glass Co Ltd 強化ガラス基板の製造方法及び強化ガラス基板
JP2012236760A (ja) * 2007-08-03 2012-12-06 Nippon Electric Glass Co Ltd 強化ガラス基板及びその製造方法
JP2010116276A (ja) * 2008-11-11 2010-05-27 Nippon Electric Glass Co Ltd 強化ガラス基板及びその製造方法
WO2011114821A1 (fr) * 2010-03-19 2011-09-22 石塚硝子株式会社 Composition de verre pour renforcement chimique et matériau en verre chimiquement renforcé
JP2012148955A (ja) * 2010-09-30 2012-08-09 Avanstrate Inc カバーガラスの製造方法及びカバーガラス
JP2012089403A (ja) * 2010-10-21 2012-05-10 Sony Corp 太陽電池及び太陽電池の製造方法
WO2012099053A1 (fr) * 2011-01-18 2012-07-26 日本電気硝子株式会社 Verre trempé et plaque de verre trempé
JP2012180262A (ja) * 2011-02-10 2012-09-20 Nippon Electric Glass Co Ltd 強化ガラス板

Also Published As

Publication number Publication date
CN104936915A (zh) 2015-09-23
JPWO2014115837A1 (ja) 2017-01-26
JP5812210B2 (ja) 2015-11-11
TW201442973A (zh) 2014-11-16

Similar Documents

Publication Publication Date Title
JP5429684B2 (ja) 強化ガラス基板及びその製造方法
JP5721065B2 (ja) 強化用ガラス板
JP5483262B2 (ja) 合わせガラス
WO2012099053A1 (fr) Verre trempé et plaque de verre trempé
CN103097315B (zh) 化学强化用玻璃、化学强化玻璃及显示装置用玻璃板
US20130017380A1 (en) Tempered glass and tempered glass sheet
EP3613710B1 (fr) Composition pour verre, verre d'aluminosilicate alcalin, procédé de préparation et applications associés
WO2012108417A1 (fr) Plaque de verre trempé
WO2014156577A1 (fr) Substrat de verre renforcé et son procédé de production
JP2009013052A (ja) 強化ガラス基板及びその製造方法
WO2014168246A1 (fr) Plaque de verre renforcée chimiquement pour usage extérieur
WO2012099055A1 (fr) Verre trempé et plaque de verre trempé
TW201404753A (zh) 強化玻璃、強化玻璃板及強化用玻璃
JP6311704B2 (ja) 建築窓用複層ガラス
JP2014001124A (ja) 化学強化ガラス板、カバーガラスおよびディスプレイ装置
CN107108330A (zh) 玻璃板
CN105621882A (zh) 一种玻璃用组合物、低脆性化学强化玻璃及其制备方法和应用
CN109148633B (zh) 一种光伏组件用超薄增强型玻璃背板、其制备方法及包含它的光伏组件
JP5812210B2 (ja) 太陽電池用カバーガラスおよび太陽電池モジュール
JP2018510834A (ja) ガラス
CN109768108B (zh) 一种包边超薄增强玻璃背板、其制备方法及包含它的光伏组件
JP6172445B2 (ja) カバーガラス
CN209266422U (zh) 一种包边超薄增强玻璃背板及包含它的光伏组件
JP2005327886A (ja) 太陽光発電モジュール
US20200223740A1 (en) Aluminosilicate glass, chemically strengthened glass, and application

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: 14743614

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2014558629

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14743614

Country of ref document: EP

Kind code of ref document: A1