WO2018083733A1 - Matériau d'étanchéité de module de cellules solaires, et procédé de fabrication de module de cellules solaires - Google Patents

Matériau d'étanchéité de module de cellules solaires, et procédé de fabrication de module de cellules solaires Download PDF

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Publication number
WO2018083733A1
WO2018083733A1 PCT/JP2016/082447 JP2016082447W WO2018083733A1 WO 2018083733 A1 WO2018083733 A1 WO 2018083733A1 JP 2016082447 W JP2016082447 W JP 2016082447W WO 2018083733 A1 WO2018083733 A1 WO 2018083733A1
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WIPO (PCT)
Prior art keywords
sealing material
glossiness
solar cell
cell module
light
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PCT/JP2016/082447
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English (en)
Japanese (ja)
Inventor
高好 松田
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三菱電機株式会社
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Priority to PCT/JP2016/082447 priority Critical patent/WO2018083733A1/fr
Priority to JP2018548482A priority patent/JPWO2018083733A1/ja
Publication of WO2018083733A1 publication Critical patent/WO2018083733A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to a solar cell module sealing material and a solar cell module manufacturing method.
  • one of the mounting structures of a solar cell module is one using an EVA (Ethylene-Vinyl Acetate) copolymer as a sealing material.
  • EVA Ethylene-Vinyl Acetate copolymer
  • the EVA copolymer is hereinafter referred to as EVA.
  • Patent Document 1 when a solar cell module is manufactured, a laminated body is formed by laminating a glass substrate, a light-receiving surface sealing material, a solar battery cell constituting a photovoltaic element, a back surface sealing material, and a back sheet in this order. And transported to a laminating apparatus for sealing. EVA is used for the light-receiving surface sealing material and the back surface sealing material. By heating and pressurizing the laminate using laminate, the EVA is melted and cured to complete the sealing of the solar cell module.
  • the light-receiving surface sealing material and the back surface sealing material are members necessary for ensuring insulation performance in addition to sealing performance.
  • a laminating apparatus in which a conveyor is provided on each of a laminator body, a front portion of the laminator body, and a rear portion of the laminator body is used.
  • the light receiving surface sealing body and the back surface sealing body are likely to be displaced, and the workability is not good.
  • the laminate which is a workpiece, is transported to the laminator body while being placed on the transport sheet.
  • the laminator main body heats the workpiece while reducing the pressure inside.
  • the workpiece conveyed to the laminator main body has a high conveyance speed, the workpiece on which the members are stacked is displaced from the original position when the workpiece is stopped, and a good product cannot be obtained effectively.
  • the present invention has been made in view of the above, and an object of the present invention is to obtain a solar cell module excellent in productivity by suppressing the displacement of the sealing material.
  • a method for manufacturing a solar cell module of the present invention includes a translucent substrate, a first sealing material, solar cells connected by tab wires, And a step of sequentially laminating the sealing material of No. 2 and the back sheet to form a laminated body, and a step of heating and pressurizing the laminated body with a sealing portion to seal the solar battery cell.
  • the first sealing material is selected based on a measurement result obtained when the glossiness of at least one surface is measured by a glossiness measurement method based on JIS Z8741.
  • the friction is adjusted, the positional deviation is suppressed, and a solar cell module excellent in productivity is obtained. be able to.
  • Sectional drawing which shows the solar cell module of Embodiment 1 typically The perspective view of the solar cell module of Embodiment 1
  • FIG. The flowchart which shows the manufacturing process of the solar cell module of Embodiment 1.
  • surface which shows the result of having measured the relationship between the sealing material movement distance at the time of conveying the solar cell module of Example 1 to a lamination apparatus, and glossiness
  • surface which shows the measurement result which measured the relationship between the EVA sticking intensity
  • FIG. 1 is a cross-sectional view schematically showing a solar cell module 50 obtained by the method for manufacturing a solar cell module according to Embodiment 1
  • FIG. 2 is a perspective view of the solar cell module
  • FIG. 3 is the solar cell.
  • FIG. 4 is a flowchart which shows the manufacturing process of the solar cell module.
  • the light receiving surface sealing material 2 as the first sealing material and the tab wire 4 are connected to the same surface on the glass substrate as the translucent substrate 1.
  • a plurality of the solar cells 3 arranged, a back surface sealing material 5 as a second sealing material, and a back sheet 6 are sequentially stacked to form the stacked body 10, and the stacked body 10 is heated. And sealing the solar battery cell 3.
  • the glossiness of at least one surface of the light-receiving surface sealing material 2 is measured to obtain a desired glossiness. That is, the light-receiving surface sealing material 2 is selected using the glossiness as a criterion. The glossiness is measured by a method based on JIS Z8741.
  • a plurality of solar cells 3 are connected by a tab wire 4 to form a string S.
  • the laminated body 10 heated and pressurized is fixed around the frame 7 and constitutes a solar cell module 50.
  • the light-receiving surface sealing material 2 is disposed on the lower layer side and laminated.
  • the glossiness of the first surface of the first sealing material in contact with the translucent substrate 1, that is, the first surface of the light-receiving surface sealing material 2, that is, the surface on the light-receiving surface 2A side, is 3.2 or more and 89.1 or less. .
  • the glossiness of the second surface of the light-receiving surface sealing material 2, that is, the surface on the back surface 2B side, disposed on the light-receiving surface 3a side of the solar battery cell 3 is 89.1 or less.
  • the second sealing material that is, the back surface sealing material 5 disposed on the back surface 3b side of the solar battery cell 3 is also composed of EVA resin, and is composed of a back sheet 6 laminated and integrated with polymer resin films.
  • the glossiness of the fourth surface in contact with the backsheet 6 side of the back surface sealing material 5, that is, the surface on the back surface 5B side is 3.2 or more and 89.1 or less.
  • the third surface in contact with the back surface 3b side of the solar cell 3 of the back surface sealing material 5, that is, the surface on the light receiving surface 5A side, has a glossiness of 89.1 or less.
  • the glossiness is obtained by measuring a light beam having a specified opening angle incident on the sample surface with a specified opening angle and reflecting in the specular reflection direction with a light receiver based on JIS Z8741. .
  • the aperture of the light source is assumed to be at the focal position of the lens, and when the mirror surface is placed at the position of the sample, the image of the aperture of the light source forms a clear image at the center of the aperture of the light receiver.
  • the incident angle is an angle formed by a line connecting the center of the aperture of the light source and the center of the lens, that is, the principal point of the lens, and the normal of the sample surface.
  • the opening angles ⁇ 1 and ⁇ 2 are angles at which the openings of the light source and the light receiver are stretched at the lens position, and the opening angles are angles at which the image of the opening is stretched at the lens position.
  • the optical axes on the incident side and the light receiving side intersect at the sample surface.
  • the opening may be replaced by a light source filament at that position.
  • the glossiness is measured at an incident angle of 20 °, 45 °, 60 °, 75 °, and 85 °.
  • FIG. 1 A measurement conceptual diagram of the glossiness Gs ( ⁇ ) is shown in FIG.
  • Light is incident from the light source 202 at an incident angle ⁇ with respect to the normal line 201 of the sample surface 200, and a specular reflection light beam ⁇ s reflected at a reflection angle ⁇ is measured by the light receiver 203.
  • the specular reflection light flux ⁇ os at the same incident angle ⁇ on the glass surface having a refractive index of 1.567 is used as a reference, and the ratio is expressed in%.
  • Gs ( ⁇ ) ( ⁇ s / ⁇ os) ⁇ 100
  • an incident angle of 60 °, 45 °, or 20 ° is generally used.
  • the glossiness is 10 or less at the measurement of the incident angle of 60 °, the measurement is made at the incident angle of 85 °. taking measurement.
  • tests and evaluations were performed in accordance with JIS Z8741.
  • the solar battery cell 3 is formed in step S101.
  • the plurality of solar battery cells 3 are connected by the tab wire 4, and the strings S are formed.
  • the light-receiving surface sealing material 2 and the back surface sealing material 5 are adjusted and the glossiness inspection step S200 is performed to prepare the light-receiving surface sealing material 2 and the back surface sealing material 5 having the above glossiness. Subsequently, as shown in FIG.
  • the light-receiving surface sealing material 2 is laminated on the light-transmitting substrate 1 made of a light-transmitting glass substrate on the transport device 100 as shown in the stage s ⁇ b> 1. And the translucent board
  • the translucent substrate 1 on which the solar cells 3 are stacked is transported to the next process, and as shown in the stage s3, the back surface sealing material 5 and the back sheet 6 are stacked, and the stacked body 10 is formed in step S103. . And the laminated body 10 is conveyed to the laminating apparatus.
  • step S104 a decompression process is performed in step S104, and the inside of the laminating apparatus (not shown) into which the laminate 10 obtained by the above-described lamination is carried is decompressed. Thereafter, a batch heat treatment process is performed in step S105, and the laminate 10 is pressurized in the melt pressurization process. Then, after cooling and curing, the solar cell module 50 shown in FIGS. 1 and 2 is formed in step S106.
  • the manufacturing method of the solar cell module 50 of the first embodiment at this time, in order to form the laminated body 10 without causing the light receiving surface sealing material 2 and the back surface sealing material 5 and the contact member to shift. The glossiness of the light receiving surface sealing material 2 and the back surface sealing material 5 is optimized.
  • the contact members are the translucent substrate 1, the solar battery cell 3, the tab wire 4, and the back sheet 6.
  • the photovoltaic element is configured by arranging a plurality of solar cells 3 in an array and electrically connecting them with tab wires 4.
  • EVA was used for the light-receiving surface sealing material 2.
  • EVA is used for the light-receiving surface sealing material 2, but in addition to this, a thermosetting resin having translucency such as polyethylene polypropylene, polycarbonate polyurethane resin, polyolefin resin, or a laminate thereof. It is possible to use the body. Furthermore, it is effective to crosslink the sealing resin used for the light-receiving surface sealing material 2 in order to improve weather resistance, strength, and adhesiveness.
  • the adhesiveness of the light-receiving surface sealing material 2 is required to be adhesive with the photovoltaic element including the solar battery cell 3 in addition to the adhesiveness with the translucent substrate 1.
  • a crosslinking method a method of generating radicals by heat is effective. Furthermore, it is preferable to add an ultraviolet absorber in order to improve light resistance. However, in order to improve the output of the module, it is preferable to reduce the amount of the ultraviolet absorber.
  • a translucent glass substrate is used as the translucent substrate 1, but a resin plate or the like may be used as long as it is a translucent material.
  • the translucent substrate 1 is fixed to the outer surface of the light receiving surface sealing material 2 located on the light receiving surface A side of the solar cell module 50.
  • the back sheet 6 is fixed to the outer surface of the back surface sealing material 5 located on the back surface B side of the solar cell module 50, and has a function of protecting the solar cells 3 from moisture. It is desirable that the back sheet 6 is a resin having high adhesiveness on the surface in contact with the back surface sealing material 5.
  • the outermost layer on the atmosphere side of the backsheet 6 is preferably a resin having high weather resistance such as polyethylene terephthalate (PET) or polyvinylidene phthalate (PVF: Poly Vinylidene Flate).
  • the back surface sealing material 5 is white.
  • the reason why the resin constituting the back surface sealing material 5 is preferably white is that the light that has entered the translucent substrate 1 and the light receiving surface sealing material 2 is reflected by the white olefin-based resin and has an optical path length. This is because it is incident on the solar cell without loss and contributes to power generation.
  • the glossiness of the surface of the light receiving surface sealing material 2 on the light receiving surface 2A side which is the first surface in contact with the translucent substrate 1 is preferably 3.2 or more and 89.1 or less.
  • the reason is that when the glossiness is smaller than 3.2, the light-receiving surface sealing material 2 slips in the solar cell module conveying step shown by the stage s2 in FIG. This is because the arrangement of the solar battery module 50 is shifted and the productivity of the solar cell module 50 is lowered.
  • the glossiness is larger than 89.1, when the glossy surfaces of the light-receiving surface sealing material 2 come into contact with each other in the process of laminating the light-receiving surface sealing material 2 on the solar cell module 50, the solar cells are attached to each other.
  • the productivity of the module 50 is reduced.
  • the glossiness is small, misalignment may occur during conveyance. Therefore, in order to prevent misalignment during conveyance, the glossiness needs to be 20.5 or more and 89.1 or less.
  • the glossiness of the first surface on the light-transmitting substrate 1 side of the light-receiving surface sealing material 2, that is, the light-receiving surface 2A is too small, slippage occurs between the light-transmitting substrate 1 and the glass, which is inappropriate. It is. On the other hand, if the size is too large, the first surfaces stick together, which is inappropriate.
  • the second surface on the solar cell 3 side of the light-receiving surface sealing material 2, that is, the back surface 2B, is preferably uneven by providing an embossed shape in order to improve the escape of gas during lamination.
  • the embossed shape can also be managed by glossiness.
  • the glossiness of the surface on the back surface 2B side of the light-receiving surface sealing material 2 is desirably 10 or less.
  • the glossiness of the fourth surface on the back sheet 6 side of the back surface sealing material 5, that is, the back surface 5B is too small, slipping occurs between the back surface 6 and the back surface 6 and is inappropriate. On the other hand, if it is too large, the fourth surfaces stick together, which is inappropriate.
  • the gloss level of the back surface 5B of the back surface sealing material 5 there is an effect of suppressing both slipping and sticking.
  • the glossiness is 3.2 or more and 89 as in the first surface on the light receiving surface 2A side of the light receiving surface sealing material 2. .1 or less is preferable.
  • glossiness of 35 or more and 49 or less is more preferable.
  • the reason for this is that when the friction between the contact surfaces of the back surface sealing material 5 and the back sheet 6 becomes small, the back sheet 6 slips in the transport process of the laminated body up to the back sheet 6 as shown by the stage s3 in FIG. This is because efficient production is not possible.
  • the third surface of the back surface sealing material 5 on the solar cell 3 side is preferably uneven by providing an embossed shape in order to improve the escape of gas during lamination.
  • the embossed shape can also be managed by glossiness.
  • the glossiness of the light receiving surface 5A of the back surface sealing material 5 is desirably 10 or less.
  • the second sealing material that is, the back surface sealing material 5 disposed on the back surface 3b side of the solar battery cell 3 is also composed of EVA resin, and is composed of a back sheet 6 laminated and integrated with polymer resin films.
  • the glossiness of the fourth surface in contact with the backsheet 6 side of the back surface sealing material 5, that is, the surface on the back surface 5B side is 3.2 or more and 89.1 or less.
  • the glossiness of the surface on the light-receiving surface 5A side that contacts the back surface 3b side of the solar battery cell 3 of the back surface sealing material 5 is 89.1 or less.
  • the light-receiving surface sealing material 2 with respect to the light-transmitting substrate 1 is formed by bending the surface of the light-receiving surface sealing material 2 to the back side to form a gap at the interface between the light-transmitting substrate 1 and the light-receiving surface sealing material 2. 2 may be suppressed, and the space between the surface of the translucent substrate 1 may be secured and the escape of gas may be adjusted.
  • the surface of the translucent substrate 1 that is in contact with the glass surface is embossed and glossed.
  • the degree may be smaller than 3.2.
  • the part of the surface in contact with the glass surface means about 70% or less with respect to the area of the glass surface.
  • Glossiness can be measured in a non-contact manner, and high-accuracy measurement can be easily performed without affecting the surfaces of the light-receiving surface sealing material 2 and the back surface sealing material 5.
  • the reason for managing the glossiness of the sealing material surface for both the light receiving surface sealing material 2 and the back surface sealing material 5 is that there is a correlation between the frictional force and the glossiness, and the friction is measured within the manufacturing process. This is because it is easier to manage the glossiness and it can be operated at a lower cost.
  • Glossiness can be measured with an in-line sensor, can be easily installed in mass production facilities, and can be managed at low cost.
  • the light-receiving surface sealing material 2 and the back surface sealing material 5 can be identified by installing an in-line sensor in a mass production facility. It becomes possible, and the misuse of the light-receiving surface sealing material 2 and the back surface sealing material 5 can be prevented.
  • the first surface and the second surface of the light-receiving surface sealing material 2 can be obtained by installing an in-line sensor in a mass production facility. Can be identified, and misuse of the first surface and the second surface can be prevented.
  • a solar battery cell such as a crystalline solar battery can be used.
  • the crystalline solar battery cell include a single crystal silicon solar battery cell and a polycrystalline silicon solar battery cell, but are not limited to the method for manufacturing a solar battery module.
  • the sealing material based on the glossiness of the surface
  • the transport speed of the solar cell module in the production process can be increased, and the productivity is excellent.
  • the solar cell module can be obtained.
  • the glossiness of a usual sealing material is about 5 to 10, but there was no idea of suppressing slipping based on the glossiness as a criterion.
  • Example 1 White plate glass (1700 mm ⁇ 1000 mm ⁇ 3.2 mm) was prepared as the translucent substrate 1. The following 14 sheets were prepared as the light-receiving surface sealing material 2 in contact with the translucent substrate 1 side.
  • the light receiving surface sealing material 2 has a glossiness of 3.2, 5.1, 10.2, 20.5, 24.5, 30.1, 34.8, 39.2, 43.1, 46. 8, 49.5, 80.4, 89.1, 99.2.
  • substrate 1, the light-receiving surface sealing material 2, and the photovoltaic cell 3 is laminated
  • the back surface sealing material 5 and the back sheet 6 are laminated, and the speed is 50 mm / sec, 100 mm / sec, 200 mm / sec, 300 mm / sec, 400 mm / sec, 500 mm / sec, 600 mm / sec, 1000 mm / sec. 1m, and stopped.
  • the distance that the light-receiving surface sealing material 2 moved in the traveling direction was measured with an image inspection machine.
  • stage s3 In the state of the stage s3 shown in FIG. 3, it was carried into a laminating apparatus (not shown), evacuated at a high temperature of 160 ° C. for 5 minutes, and laminated at a pressing pressure of 50 kPa and a pressing time of 5 minutes.
  • FIG. 5 and FIG. 6 show the results of measuring the relationship between the sealing material moving distance and the glossiness at each conveyance speed, specifically, the sealing material movement when the solar cell module is conveyed to the laminating apparatus. It is the table
  • the transport speed is 50 mm / sec or less based on the table shown in FIG. 5 and the results shown in FIG. In this case, when the glossiness was 3.2 or more, the moving distance of the sealing material was 2 mm or less, and there was no problem, and it was possible to produce a solar cell module without misalignment.
  • the conveyance speed was 100 mm / sec or less, if the glossiness was 5.1 or more, the moving distance of the sealing material was 2 mm or less, and there was no problem, and the solar cell module could be produced without any problem.
  • the conveyance speed is 200 mm / sec or less, if the glossiness is 10.2 or more, the moving distance of the sealing material is 2 mm or less, and there was no problem, and the solar cell module could be produced without any problem.
  • the conveyance speed is 300 mm / sec or less, if the glossiness is 10.2 or more, the moving distance of the sealing material is 2 mm or less, and there was no problem, and the solar cell module could be produced without any problem. .
  • the conveyance speed is 400 mm / sec or less
  • the glossiness is 20.5 or more
  • the moving distance of the sealing material is 2 mm or less, and there was no problem
  • the solar cell module could be produced without any problem.
  • the conveyance speed was 500 mm / sec or less
  • the glossiness was 20.5 or more
  • the moving distance of the sealing material was 2 mm or less, and there was no problem
  • the solar cell module could be produced without any problem.
  • the conveyance speed was 600 mm / sec or less
  • the glossiness was 20.5 or more
  • the moving distance of the sealing material was 2 mm or less, and there was no problem
  • the solar cell module could be produced without any problem.
  • the vertical axis represents the sealing material moving distance
  • the horizontal axis represents the glossiness
  • V 1 is the conveyance speed 50 mm / sec
  • V 2 is the conveyance speed 100 mm / sec
  • V 3 is the conveyance speed 200 mm / sec
  • V 4 is conveying speed 300mm / sec
  • V 5 is the sealing material moving distance of the conveying speed of 400mm / sec
  • V 6 is the conveying speed 500mm / sec
  • V 7 is conveying speed 600mm / sec
  • V 8 are conveying speed 1000 mm / sec - glossiness The curve is shown.
  • the glossiness of the portion of the light receiving surface sealing material 2 on the side of the light receiving surface 2 ⁇ / b> A that is in contact with the translucent substrate 1 is 3.2. It is preferably 89.1 or less. Desirably, the glossiness of the portion of the light receiving surface sealing material 2 on the light receiving surface 2A side is preferably 5.1 or more. Even if the conveyance speed increases, the moving distance can be suppressed to 1 mm or less. More desirably, the glossiness of the portion of the light receiving surface sealing material 2 on the light receiving surface 2A side is preferably 10.2 or more.
  • the gloss of the surface of the light receiving surface sealing material 2 on the light receiving surface 2A side is set to 39.2 or more to move The distance can be suppressed to 1 mm or less.
  • the sealing material slips in the solar cell module conveying step the arrangement of the solar cells 3 stacked thereon is shifted, and the productivity of the solar cell module 50 is increased. It can suppress more that it falls.
  • Example 2 When the light-receiving surface sealing material 2 is laminated on the light-transmitting substrate 1, the glossiness of 3.2 is assumed assuming workability when the glossy surfaces in contact with the glass surface of the light-receiving surface sealing material 2 are attached. To 99.2 EVA were bonded together, the strength of the sticking was confirmed with a push-pull gauge, and workability was further confirmed. The laminating process and the conveying process were performed in the same manner as in the example. 7 and 8 show the relationship between the EVA sticking strength and the sticking width when the glossiness of the surface in contact with the solar battery cell in the solar battery module of Example 2 is changed from 3.2 to 99.2. It is the table
  • FIG. 9 is a diagram showing the result of considering the glossiness from the viewpoint of manufacturing workability and transportability in the solar cell module of Example 2.
  • the relationship between the EVA sticking strength and the sticking width when the glossiness of the surface in contact with the solar battery cell was changed from 3.2 to 99.2 was measured.
  • a measurement result is shown with the table
  • the EVA sticking width is a width in which the glossy surfaces of EVA are in contact with each other during the work. In that case, since the contact surfaces have frictional force and adhesiveness to each other, the labor required for peeling off increases as the attached width increases. Therefore, the index is shown by the pasting width. In FIG.
  • the vertical axis is sticking strength
  • the horizontal axis is glossiness
  • W 1 is sticking width 10 mm
  • W 2 is sticking width 50 mm
  • W 3 is sticking width 100 mm
  • W 4 is sticking width 200 mm
  • W 5 represents a sticking width-gloss degree curve with a sticking width of 500 mm.
  • the laminate 10 From the viewpoint of conveyance in the production process, it is preferable to convey the laminate 10 at 300 mm / sec or more in order to increase productivity.
  • the conveyance speed is generally 300 mm / sec to 500 mm / sec in a standard production line for solar cell modules.
  • the glossiness is 20.5 to 89.1, generally 21 to 49.
  • the glossiness is more preferably from 34.8 to 49.5, generally from 35 to 49, from the viewpoint of both transportability and workability.
  • the conveyance speed may be 50 mm / sec to 200 mm / sec.
  • the glossiness is desirably 10.2 to 89.1, and generally 10.5 to 89.
  • the glossiness is more preferably 20.5 to 49.5, generally 21 to 49.
  • Example 2 using a laminating apparatus, vacuuming was performed at a high temperature of 160 ° C. for 5 minutes, and the laminating process was performed at a pressing pressure of 50 kPa and a pressing time of 5 minutes.
  • Example 3 Further, assuming the ease of slipping on the light-transmitting substrate 1, the light-receiving surface is sealed so that the glossy surface of the light-receiving surface sealing material 2 of 200 mm ⁇ 200 mm is in contact with the light-transmitting substrate 1 made of a glass substrate. Place the stop material 2, place a 1kg weight with a bottom area of 5cm x 10cm on it, fix the light-receiving surface sealing material 2 made of EVA and 1kg weight with double-sided tape, and EVA and glass with push-pull gauge The frictional force was measured when sliding started between the substrates.
  • the light-receiving surface sealing material 2 in this case was tested by preparing several types of light-receiving surface sealing material 2 having a glossiness of 3.2 to 99.2 at a room temperature of 25 ° C.
  • the results are shown in the table of FIG. 10 and FIG. 10 and 11 are a table and a diagram showing the results of measuring the relationship between the glossiness and the frictional force of the surface of the light-receiving surface sealing material in contact with the solar cell in the solar cell module of Example 3.
  • Example 2 Note that as the glossiness obtained in Example 1 increases, the glossiness increases as shown in the table of Example 3 shown in FIG. This is because the frictional force is improved. Also in Example 2, the lamination process and the conveyance process were the same.
  • Example 3 it is possible to improve the productivity of the solar cell module by defining the conveyance speed in production and the glossiness or frictional force of the sealing material in contact with the light-transmitting substrate.
  • the sensor can always check the slipperiness of the sealant in a non-contact manner, and control the position of the sealant by predicting the slippage of the sealant. It is also possible to do. Further, even when the temperature of the sealing material is brought close to the melting point, the glossiness can be measured, and the sealing material can be melted without causing slipping, so that the glossiness can be controlled.
  • Example 3 using the laminating apparatus shown in FIG. 3, evacuation was performed at a high temperature of 160 ° C. for 5 min, and the laminating process was performed at a pressing pressure of 50 kPa and a pressing time of 5 min.
  • Embodiment 2 the laminated body which laminated
  • Other conditions are the same as in the first embodiment. Also, in the following second to fourth embodiments, the constituent members are the same as those in the first embodiment, and therefore the same drawings are referred to.
  • FIG. 12 and FIG. 13 show the results of measuring the relationship between the sealing material moving distance and the glossiness at each conveyance speed, specifically, sealing when the solar cell module is conveyed to the laminating apparatus. It is the table
  • the conveyance speed is 100 mm / sec or less, even if the glossiness is 3.2 or less, the moving distance after laminating the back surface sealing material 5 and the back sheet 6 is 1 mm or less, and there is no problem, and there is no problem with the solar cell module without displacement. It was possible to produce.
  • the conveyance speed was 300 mm / sec or less
  • the gloss distance was 5.1 or more
  • the moving distance of the sealing material was 2 mm or less, and the solar cell module could be produced without any problem without positional displacement.
  • the moving distance of the sealing material was 2 mm or less if the glossiness was 10.2 or more, and the solar cell module could be produced without any problem without positional displacement.
  • the moving distance of the sealing material is 2 mm or less if the glossiness is 10.2 or more, and the solar cell module can be produced without any problem without positional displacement.
  • the moving distance of the sealing material is 2 mm or less if the glossiness is 10.2 or more, and the solar cell module can be produced without any problem without positional displacement.
  • the conveyance speed is 1000 mm / sec or less
  • the gloss distance is 20.5 or more
  • the moving distance of the sealing material is 2 mm or less
  • FIG. 14 is a diagram showing the result of considering the glossiness from the viewpoint of manufacturing workability and transportability in the solar cell module of the second embodiment.
  • Transport in the state where the translucent substrate 1, the light receiving surface sealing material 2, the photovoltaic element provided with the solar cells 3, the back surface sealing material 5, and the PET backsheet 6 are laminated is performed before the laminating step. It is a conveyance process.
  • the laminating step is a step of heating while evacuating, and is the most time consuming step in the manufacturing process of the solar cell module. Therefore, it is desired to shorten the time for the previous transport process. Therefore, the glossiness was considered from the viewpoint of workability and transportability.
  • the result is shown in FIG. Similarly to the case described in Example 1 with reference to FIG.
  • the conveyance speed is desirably 300 mm / sec to 500 mm / sec and 600 mm / sec to 1000 mm / sec.
  • the gloss rate is 10.2 or more under any condition of the conveyance speed of 300 mm / sec to 500 mm / sec and the condition of 600 mm / sec to 1000 mm / sec, there is no significant problem in conveyance although fine movement is possible. If the glossiness is 20.5 or more, there is no problem in conveyance. More preferably, when the conveyance speed is 300 mm / sec to 500 mm / sec, the deviation of the sealing material can be suppressed to 0.5 mm or less if the glossiness is 34.8 or more.
  • the glossiness is desirably 10.2 to 89.1 and generally 11 to 89. Further, the glossiness is more desirably 20.5 to 49.5, and more desirably 21 to 49.
  • Embodiment 3 FIG.
  • the solar cell module 50 of Embodiment 3 has different glossiness between the light-receiving surface sealing material 2 and the back surface sealing material 5. Other configurations are the same as those of the solar cell module 50 of the first embodiment.
  • a sealing material with high glossiness is used as the light-receiving surface sealing material.
  • the back surface sealing material can be arbitrarily selected. Since the glossiness of the conventional sealing material is about 5 to 10, it is possible to use a usual material for the backside sealing material by making the backside sealing material equivalent to the conventional glossiness, Manufacturing cost can be reduced.
  • a material having a glossiness of about 5 to 10 and a material having a glossiness of 35 to 50 can be identified visually, and can also be easily identified by a glossiness sensor. Therefore, even if the glossiness of the light-receiving surface sealing material 2 and the back surface sealing material 5 is changed, management in manufacturing is easy.
  • the glossiness of the light-receiving surface sealing material 2 is desirably about 5 to 10.
  • the gloss of the back surface sealing material 5 is desirably 35 to 50.
  • Embodiment 4 is an example in which the glossiness is different between the light receiving surface 2A side and the back surface 2B side of the light receiving surface sealing material 2. Other configurations are the same as those in the first embodiment.
  • the first surface having a high glossiness is used on the light receiving surface 2A side of the light receiving surface sealing material 2.
  • Workability and transportability are determined by the glossiness on the light-receiving surface 2A side, which is a surface in contact with the glass substrate that is the translucent substrate 1, and can be arbitrarily selected for the back surface 2B side. Since the glossiness of the usual sealing material is about 5 to 10, the back surface 2B side can be manufactured in the same manner as the usual solar cell module for one side by making it equal to the usual glossiness. Manufacturing cost can be reduced.
  • a material having a glossiness of about 5 to 10 and a material having a glossiness of 35 to 50 can be identified visually, and can also be easily identified by a glossiness sensor. Therefore, even if the glossiness on the light receiving surface side and the back surface side is changed, management in manufacturing is easy.
  • the manufacturing cost can be reduced and the management in manufacturing can be performed.
  • the glossiness of one surface is desirably about 5 to 10.
  • the glossiness of the other surface is desirably 35 to 50.
  • a material having a glossiness of about 5 to 10 and a material having a glossiness of 35 to 50 can be identified visually, and can also be easily identified by a glossiness sensor. Therefore, even if the glossiness of the light-receiving surface sealing material and the back surface sealing material is changed, management in manufacturing is easy.
  • the translucent substrate, the light-receiving surface sealing material, the solar battery cell, the back surface sealing material, and the back sheet are stacked in this order so that the positional shift can be further suppressed.
  • the side disposed on the lower side in the laminate chamber is the light receiving surface sealing material.
  • the back sheet, the back surface sealing material, the solar cell installation, the light receiving surface sealing material, and the light transmitting substrate are stacked in the reverse direction to the stacking direction of the solar cell modules of the first to fourth embodiments. The same effect can be obtained by treating the glossiness of the surface of the back surface sealing material in contact with the back sheet as the surface of the light receiving surface sealing material in contact with the translucent substrate.

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  • 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)
  • Photovoltaic Devices (AREA)

Abstract

L'invention concerne un matériau d'étanchéité de surface de réception de lumière (2) pour un module de cellules solaires comprenant une surface de réception de lumière (2A) qui est une première surface venant en butée contre un substrat optiquement transparent 1, et une surface arrière (2B) qui est une seconde surface opposée à la première surface, la surface de réception de lumière ayant un degré de brillance supérieur ou égal à 21 et inférieur ou égal à 89 tel que mesuré par un procédé de mesure de degré de brillance basé sur JIS Z8741. Le degré de brillance est mesuré par un procédé basé sur JIS Z8741. Le matériau d'étanchéité destiné à être utilisé dans le module de cellules solaires est sélectionné de manière appropriée à l'aide du degré de brillance en tant que norme de détermination, ce qui permet de fournir un module de cellules solaires ayant une productivité élevée et son procédé de fabrication.
PCT/JP2016/082447 2016-11-01 2016-11-01 Matériau d'étanchéité de module de cellules solaires, et procédé de fabrication de module de cellules solaires WO2018083733A1 (fr)

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PCT/JP2016/082447 WO2018083733A1 (fr) 2016-11-01 2016-11-01 Matériau d'étanchéité de module de cellules solaires, et procédé de fabrication de module de cellules solaires
JP2018548482A JPWO2018083733A1 (ja) 2016-11-01 2016-11-01 太陽電池モジュールの封止材および太陽電池モジュールの製造方法

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PCT/JP2016/082447 WO2018083733A1 (fr) 2016-11-01 2016-11-01 Matériau d'étanchéité de module de cellules solaires, et procédé de fabrication de module de cellules solaires

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010212496A (ja) * 2009-03-11 2010-09-24 Lintec Corp 太陽電池モジュール用保護シート
JP2012234974A (ja) * 2011-05-02 2012-11-29 Ma Packaging:Kk 太陽電池モジュール用バックシート
WO2013118729A1 (fr) * 2012-02-06 2013-08-15 三菱樹脂株式会社 Feuille d'étanchéité destinée à une cellule solaire
WO2014045692A1 (fr) * 2012-09-20 2014-03-27 東レ株式会社 Feuille d'étanchéité destinée à une cellule solaire et module de cellule solaire
WO2015115492A1 (fr) * 2014-01-30 2015-08-06 旭硝子株式会社 Plaque de verre avec fonction antireflets pour cellules solaires

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010212496A (ja) * 2009-03-11 2010-09-24 Lintec Corp 太陽電池モジュール用保護シート
JP2012234974A (ja) * 2011-05-02 2012-11-29 Ma Packaging:Kk 太陽電池モジュール用バックシート
WO2013118729A1 (fr) * 2012-02-06 2013-08-15 三菱樹脂株式会社 Feuille d'étanchéité destinée à une cellule solaire
WO2014045692A1 (fr) * 2012-09-20 2014-03-27 東レ株式会社 Feuille d'étanchéité destinée à une cellule solaire et module de cellule solaire
WO2015115492A1 (fr) * 2014-01-30 2015-08-06 旭硝子株式会社 Plaque de verre avec fonction antireflets pour cellules solaires

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