TW201413995A - Sealing sheet for solar cell and solar cell module - Google Patents
Sealing sheet for solar cell and solar cell module Download PDFInfo
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- TW201413995A TW201413995A TW102127359A TW102127359A TW201413995A TW 201413995 A TW201413995 A TW 201413995A TW 102127359 A TW102127359 A TW 102127359A TW 102127359 A TW102127359 A TW 102127359A TW 201413995 A TW201413995 A TW 201413995A
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- solar cell
- encapsulating material
- sheet
- unevenness
- material sheet
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- 238000007789 sealing Methods 0.000 title abstract 4
- 239000000463 material Substances 0.000 claims description 139
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 239000008393 encapsulating agent Substances 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000003860 storage Methods 0.000 abstract description 13
- 238000003475 lamination Methods 0.000 abstract description 11
- 230000004075 alteration Effects 0.000 abstract 1
- 238000004049 embossing Methods 0.000 description 48
- 230000003068 static effect Effects 0.000 description 19
- 238000005259 measurement Methods 0.000 description 11
- 239000005022 packaging material Substances 0.000 description 10
- 239000003566 sealing material Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 239000005038 ethylene vinyl acetate Substances 0.000 description 8
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 8
- 239000011521 glass Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 239000005340 laminated glass Substances 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
Classifications
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- 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
- B32B17/1055—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 resin layer, i.e. interlayer
- B32B17/10788—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 resin layer, i.e. interlayer containing ethylene vinylacetate
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- 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
- B32B17/1055—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 resin layer, i.e. interlayer
- B32B17/10559—Shape of the cross-section
- B32B17/10577—Surface roughness
- B32B17/10587—Surface roughness created by embossing
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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
Abstract
Description
本發明係關於一種太陽能電池封裝材料片。尤其關於一種太陽能電池封裝材料片、及使用該片之太陽能電池模組，其同時能夠抑制在太陽能電池封裝材料保管時之黏連與在太陽能電池製造步驟的積層時之單元位置偏移的不當情形。 The present invention relates to a sheet of solar cell encapsulating material. In particular, a solar cell encapsulating material sheet and a solar cell module using the same can simultaneously suppress an improper situation in which the adhesion of the solar cell encapsulating material during storage and the cell position in the solar cell manufacturing step are shifted. .
近年來，從資源之有效利用或CO2排放量削減之觀點，直接將陽光轉換成電能的太陽能電池受到矚目，技術開發正在提升中。 In recent years, from the viewpoint of efficient use of resources or reduction of CO 2 emissions, solar cells that directly convert sunlight into electric energy have attracted attention, and technology development is improving.
為現在主流之結晶矽系太陽能電池中，依序積層玻璃、封裝材料片、太陽能電池單元、封裝材料片、背面薄片，在真空‧加熱條件下積層該積層體，利用熔融的封裝材料樹脂封裝單元而製造太陽能電池模組。 In the current mainstream crystalline lanthanide solar cell, the laminated glass, the encapsulating material sheet, the solar cell unit, the encapsulating material sheet, and the back sheet are sequentially laminated under vacuum and heating conditions, and the encapsulating unit is encapsulated by a molten encapsulating material. And manufacturing solar cell modules.
在封裝材料片，現在主要所用之樹脂係乙烯乙酸乙烯酯共聚物(以下，也有將乙烯乙酸乙烯酯共聚物表示為EVA)，將有下列之問題：該樹脂係容易緊貼的材料，於滾壓或積層保管封裝材料片之情形下，發生封裝材料片彼此將會緊貼的黏連，在上述積層步驟大幅降低作業性。 In the encapsulating material sheet, the resin-based ethylene vinyl acetate copolymer which is mainly used now (hereinafter, the ethylene vinyl acetate copolymer is also referred to as EVA) has the following problems: the resin is easy to adhere to the material, and is rolled. In the case where the encapsulating material sheets are stored in a layered manner, the bonding of the encapsulating material sheets to each other occurs, and the workability is greatly reduced in the laminating step.
又，於上述積層步驟中，在太陽能電池單元 與封裝材料片將會緊貼、加熱條件下封裝材料片將會收縮之際，已成為因太陽能電池單元之位置偏移所造成的單元彼此發生干擾、因單元破損而使模組良率降低的原因之一。 Also, in the above lamination step, in the solar cell unit When the encapsulating material sheet will be in close contact and the packaging material sheet will shrink under heating conditions, the cells caused by the positional shift of the solar cell unit interfere with each other, and the module yield is lowered due to cell breakage. one of the reasons.
為了避免上述問題，藉由在封裝材料片之製程進行壓紋加工，在片表面形成凹凸，使片彼此之耐黏連性提高，而採取防止保管時之封裝材料片彼此之緊貼的同時，也減低封裝材料片與太陽能電池單元之摩擦係數的對策。 In order to avoid the above problem, the embossing process is performed on the surface of the encapsulating material sheet, and irregularities are formed on the surface of the sheet to improve the adhesion resistance between the sheets, and the packaging material sheets are prevented from being in close contact with each other during storage. It also reduces the countermeasures for the coefficient of friction between the encapsulating material sheet and the solar cell unit.
於專利文獻1、2中，有人提案一種封裝材料片，其形成有複數個之具有由圓柱或圓錐梯形所構成的下襬部與凸曲面形狀頂部的突起之封裝材料片，或具有高度為0.05至0.5mm之獨立的凸部。 In Patent Documents 1 and 2, there has been proposed a sheet of encapsulating material in which a plurality of encapsulating material sheets having protrusions of a hem portion and a convex curved surface portion composed of a cylindrical or conical trapezoidal shape are formed, or have a height of 0.05 to 0.5mm independent projection.
另一方面，於專利文獻3、4、5中，有人提案一種封裝材料片，其係在封裝材料片中設置Ra為1至20μm左右之凹凸。 On the other hand, in Patent Documents 3, 4, and 5, a package material sheet is proposed in which an unevenness of Ra of about 1 to 20 μm is provided in the package material sheet.
又，於專利文獻6、7中，有人提案一種封裝材料片，其係在相反於壓紋面的面中設置Ra為1至2μm左右之凹凸。 Further, in Patent Documents 6 and 7, a package material sheet in which irregularities having Ra of about 1 to 2 μm is provided in a surface opposite to the embossed surface has been proposed.
[專利文獻1]日本特開2010-258123號公報 [Patent Document 1] Japanese Patent Laid-Open Publication No. 2010-258123
[專利文獻2]日本特開2010-232311號公報 [Patent Document 2] Japanese Patent Laid-Open Publication No. 2010-232311
[專利文獻3]日本特開2010-192804號公報 [Patent Document 3] Japanese Patent Laid-Open Publication No. 2010-192804
[專利文獻4]日本特開2012-7087號公報 [Patent Document 4] Japanese Patent Laid-Open Publication No. 2012-7087
[專利文獻5]日本特開2012-99713號公報 [Patent Document 5] Japanese Laid-Open Patent Publication No. 2012-99713
[專利文獻6]日本特開2010-269506號公報 [Patent Document 6] Japanese Patent Laid-Open Publication No. 2010-269506
[專利文獻7]日本特開2010-269507號公報 [Patent Document 7] Japanese Patent Laid-Open Publication No. 2010-269507
然而，在該專利文獻1至7記載的封裝材料片也對耐黏連性或摩擦係數減低所造成的單元位置偏移抑制達成一定之效果，但無法確保充分之作業性或模組良率。 However, the encapsulating material sheets described in Patent Documents 1 to 7 also have a certain effect on suppressing the cell positional displacement caused by the decrease in the blocking resistance or the friction coefficient, but it is not possible to ensure sufficient workability or module yield.
因此，本發明之目的係在於提供一種太陽能電池封裝材料片、及使用該片之太陽能電池模組，其同時能夠抑制在太陽能電池封裝材料保管時之黏連與太陽能電池製造步驟的積層時之單元位置偏移的不當情形。 Accordingly, an object of the present invention is to provide a solar cell encapsulating material sheet and a solar cell module using the same, which can simultaneously suppress the bonding of the solar cell encapsulating material during storage and the solar cell manufacturing step. Improper location offset.
為了解決上述問題，本發明係具有下列之構造。亦即， In order to solve the above problems, the present invention has the following configurations. that is,
(1)一種太陽能電池封裝材料片，其特徵為在將一側之面作為A面、另一側之面作為B面時，該A面係具有平均粗糙度Ra(A1)為3至95μm之凹凸(A1)、與平均粗糙度Ra(A2)為0.3至2.5μm之凹凸(A2)。 (1) A solar cell encapsulating material sheet characterized in that, when a surface on one side is referred to as an A surface and a surface on the other side is a B surface, the A surface has an average roughness Ra (A1) of 3 to 95 μm. The unevenness (A1) and the average roughness Ra (A2) are irregularities (A2) of 0.3 to 2.5 μm.
(2)在(1)記載之太陽能電池封裝材料片，其在該凹凸(A1)之凸部具有平均粗糙度Ra(A3)為0.3至2.5μm之凹凸(A3)。 (2) The solar cell encapsulating material sheet according to (1), wherein the convex portion of the concavities and convexities (A1) has irregularities (A3) having an average roughness Ra (A3) of 0.3 to 2.5 μm.
(3)在(1)或(2)記載之太陽能電池封裝材料片，其中 該凹凸(A1)之平均間隔Sm(A1)為100至2,000μm。 (3) The solar cell encapsulating material sheet according to (1) or (2), wherein The average interval Sm (A1) of the unevenness (A1) is 100 to 2,000 μm.
(4)在(1)至(3)中任一項記載之太陽能電池封裝材料片，其中該凹凸(A2)之平均間隔Sm(A2)為5至80μm。 (4) The solar cell encapsulating material sheet according to any one of (1) to (3), wherein the unevenness (A2) has an average interval Sm (A2) of 5 to 80 μm.
(5)在(1)至(4)中任一項記載之太陽能電池封裝材料片，其中針對該A面，片傳送方向之平均間隔Sm(A-MD)[μm]、與垂直於該片傳送方向之平均間隔Sm(A-TD)[μm]之比(Sm(A-MD)/Sm(A-TD))為1.1至5。 (5) The solar cell encapsulating material sheet according to any one of (1) to (4), wherein, for the A side, an average interval Sm (A-MD) [μm] of the sheet conveying direction is perpendicular to the sheet The ratio (Sm(A-MD)/Sm(A-TD)) of the average interval Sm(A-TD) [μm] in the transport direction is 1.1 to 5.
(6)在(1)至(5)中任一項記載之太陽能電池封裝材料片，其中該B面具有平均粗糙度Ra(B1)為0.5至4μm之凹凸(B1)、且該凹凸(B1)之平均間隔Sm(B1)為10至400μm。 (6) The solar cell encapsulating material sheet according to any one of (1) to (5), wherein the B surface has a concavity (B1) having an average roughness Ra (B1) of 0.5 to 4 μm, and the concavity (B1) The average interval Sm (B1) is 10 to 400 μm.
(7)一種太陽能電池模組，其係藉由依序配置受光面保護材、在(1)至(6)中任一項記載之太陽能電池封裝材料片、太陽能電池單元、在(1)至(6)中任一項記載之太陽能電池封裝材料片、及背面保護材後封裝所獲得。 (7) A solar cell module in which a light-receiving surface protective material, a solar cell encapsulating material sheet according to any one of (1) to (6), a solar battery cell, and (1) to (1) to (1) to (1) 6) The solar cell encapsulating material sheet and the back protective material package described in any one of the following.
(8)在(7)記載之太陽能電池模組，其係將該太陽能電池單元連接至該太陽能電池封裝材料片之A面側的方式來配置。 (8) The solar battery module according to (7), wherein the solar battery unit is connected to the side A side of the solar battery sealing material sheet.
若根據本發明，能夠提供一種太陽能電池封裝材料片、及使用該片之太陽能電池模組，其同時能夠抑制在太陽能電池封裝材料保管時之黏連與在太陽能電池製造步驟的積層時之單元位置偏移的不當情形。 According to the present invention, it is possible to provide a solar cell encapsulating material sheet and a solar cell module using the same, which can simultaneously suppress adhesion at the time of storage of the solar cell encapsulating material and cell position at the time of lamination in the solar cell manufacturing step Improper offset.
A‧‧‧輪廓曲線 A‧‧‧ contour curve
B‧‧‧凹凸(A1) B‧‧‧ bump (A1)
C‧‧‧凹凸(A2) C‧‧‧ bump (A2)
D‧‧‧平均線 D‧‧‧ average line
E‧‧‧凹凸(A1)之凸部(在圖中，被影線的部分為凹凸(A1)之凸部) E‧‧‧ convex part of the concave-convex (A1) (in the figure, the hatched portion is the convex portion of the concave-convex (A1))
第1圖係說明封裝材料片之輪廓曲線、凹凸(A1)、及 凹凸(A2)之圖形。 Figure 1 is a diagram showing the outline curve, unevenness (A1), and Concave (A2) graphic.
第2圖係說明平均線、及封裝材料片之凹凸(A1)的凸部之圖形。 Fig. 2 is a view showing the average line and the pattern of the convex portion of the unevenness (A1) of the encapsulating material sheet.
以下，詳細說明本發明之實施形態。 Hereinafter, embodiments of the present invention will be described in detail.
雖然被用於本發明之太陽能電池封裝材料片之樹脂，並未被特別限定，較佳為具有透明性，在真空積層時之熱板溫度(130至160℃)將會熔融之熱塑性樹脂，適於使用乙烯乙酸乙烯酯共聚物(以下，記載為「EVA」)、改性聚乙烯、離子鍵聚合物、聚乙烯丁縮醛等。 Although the resin used for the solar cell encapsulating material sheet of the present invention is not particularly limited, it is preferably a thermoplastic resin having a transparency which is melted at a hot plate temperature (130 to 160 ° C) at the time of vacuum lamination. An ethylene vinyl acetate copolymer (hereinafter referred to as "EVA"), a modified polyethylene, an ionomer, a polyvinyl butyral, or the like is used.
又，本發明之太陽能電池封裝材料片係為了提高封裝特性，必要時亦可適宜含有交聯劑、交聯助劑、耦合劑、紫外線吸收劑、光安定化劑等之添加劑。 Moreover, in order to improve the package characteristics, the solar cell encapsulating material sheet of the present invention may suitably contain an additive such as a crosslinking agent, a crosslinking assistant, a coupling agent, an ultraviolet absorber, or a light stabilizer.
本發明之太陽能電池封裝材料片，其係在將一側之面作為A面、另一側之面作為B面時，該A面係具有平均粗糙度Ra(A1)為3至95μm之凹凸(A1)、與平均粗糙度Ra(A2)為0.3至2.5μm之凹凸(A2)。藉由一併具有Ra為3至95μm之較粗的凹凸(A1)、與Ra為0.3至2.5μm之微細的凹凸(A2)，而減低封裝材料片彼此、及封裝材料片與太陽能電池單元之接觸面積，僅具有任一種凹凸之情形或不具有任一種凹凸之情形作一比較，能夠抑制在保管時之黏連與積層時之單元位置偏移。還有，從該觀點，特佳的凹凸(A2)之平均粗糙度Ra(A2)為0.5至2.5μm。若凹凸(A1)之平均粗糙度Ra(A1)低於3μm、或凹凸(A2)之平 均粗糙度Ra(A2)低於0.3μm時，將有增加封裝材料片彼此、及封裝材料片與太陽能電池單元的接觸面積、發生黏連或太陽能電池單元的位置偏移之虞。一旦凹凸(A1)之平均粗糙度Ra(A1)超過95μm時，封裝材料片之空隙部將會變大，於積層時，將有氣泡殘留於封裝材料片與太陽能電池單元之間，使模組的外觀惡化之虞。又，一旦凹凸(A2)之平均粗糙度Ra(A2)超過2.5μm時，有實質上僅成為凹凸(A1)的狀態之情形，得不到必要之實際效果。從該觀點，特佳的凹凸(A1)之平均粗糙度Ra(A1)為3至45μm，更佳為6至15μm。 In the solar cell encapsulating material sheet of the present invention, when the surface on one side is the surface A and the surface on the other side is the B surface, the surface A has an unevenness with an average roughness Ra (A1) of 3 to 95 μm ( A1) and the unevenness (A2) having an average roughness Ra (A2) of 0.3 to 2.5 μm. By reducing the coarse concavities and convexities (A1) having Ra of 3 to 95 μm and the fine concavities and convexities (A2) of Ra of 0.3 to 2.5 μm, the encapsulating material sheets, and the encapsulating material sheets and the solar cell units are reduced. In comparison with the case where the contact area has only one type of unevenness or the case where there is no unevenness, it is possible to suppress the cell positional shift at the time of adhesion and lamination at the time of storage. Further, from this viewpoint, the average roughness Ra (A2) of the particularly excellent unevenness (A2) is 0.5 to 2.5 μm. If the unevenness (A1) has an average roughness Ra (A1) of less than 3 μm or flatness of the unevenness (A2) When the average roughness Ra (A2) is less than 0.3 μm, there is a case where the contact areas of the encapsulating material sheets, the contact area of the encapsulating material sheets and the solar cell units, the adhesion or the positional shift of the solar cell are increased. When the average roughness Ra (A1) of the concavities and convexities (A1) exceeds 95 μm, the void portion of the encapsulating material sheet will become large, and when laminating, bubbles will remain between the encapsulating material sheet and the solar cell unit, so that the module The appearance of the deterioration is worse. In addition, when the average roughness Ra (A2) of the unevenness (A2) exceeds 2.5 μm, there is a case where it is substantially only in the state of the unevenness (A1), and the necessary practical effect cannot be obtained. From this viewpoint, the average roughness Ra (A1) of the particularly excellent unevenness (A1) is from 3 to 45 μm, more preferably from 6 to 15 μm.
還有，A面之平均粗糙度Ra(A1)及平均粗糙度Ra(A2)之測定方法係敘述於後。 Further, the measurement methods of the average roughness Ra (A1) and the average roughness Ra (A2) of the A surface are described later.
針對本發明之太陽能電池封裝材料片，為了作成具有平均粗糙度Ra(A1)為3至95μm之凹凸(A1)及與平均粗糙度Ra(A2)為0.3至2.5μm之凹凸(A2)的A面，如後所述，可舉出如下之方法：在太陽能電池封裝材料片之製造步驟，對A面轉印欲賦予該A面具有凹凸形狀之壓紋輥形狀。 In the solar cell encapsulating material sheet of the present invention, in order to form the concavities and convexities (A1) having an average roughness Ra (A1) of 3 to 95 μm and the concavities (A2) having an average roughness Ra (A2) of 0.3 to 2.5 μm As will be described later, in the step of producing a solar cell encapsulating material sheet, an embossing roll shape having an uneven shape on the A side is to be applied to the A side.
本發明之太陽能電池封裝材料片較佳為在凹凸(A1)之凸部具有平均粗糙度Ra(A3)為0.3至2.5μm之凹凸(A3)。藉由在較粗的凹凸(A1)之凸部具有微細的凹凸(A3)，容易獲得減低封裝材料片彼此、及封裝材料片與太陽能電池單元之接觸面積，抑制在保管時之黏連與積層時之太陽能電池單元位置偏移的效果。 The solar cell encapsulating material sheet of the present invention preferably has irregularities (A3) having an average roughness Ra (A3) of 0.3 to 2.5 μm in the convex portion of the concavities and convexities (A1). By having fine concavities and convexities (A3) in the convex portions of the thick concavities and convexities (A1), it is easy to obtain a contact area between the encapsulating material sheets and the encapsulating material sheets and the solar cell cells, thereby suppressing adhesion and lamination during storage. The effect of the positional shift of the solar cell at the time.
還有，所謂凹凸(A1)之凸部係指在JIS B0601 (2001)3.2.4項記載的山(輪廓峰)。亦即，如第2圖所示，係指藉由平均線而切斷該輪廓曲線時之相鄰的二個交點所夾的曲線部分中，較平均線為上側(從物體朝向空間側的方向)之部分。還有，所謂在凹凸(A1)之凸部具有凹凸(A3)係意指針對較凹凸(A1)之輪廓曲線之平均線為高的區域所求得的Ra(A3)為0.3至2.5μm。 In addition, the convex portion of the unevenness (A1) is referred to as JIS B0601. (2001) The mountain (contour peak) described in Section 3.2.4. That is, as shown in Fig. 2, the curve portion of the adjacent two intersection points when the contour curve is cut by the average line is the upper side (the direction from the object toward the space side) Part of it. In addition, the convex portion of the unevenness (A1) has the unevenness (A3), and the Ra (A3) obtained by the region where the average line of the contour curve of the unevenness (A1) is high is 0.3 to 2.5 μm.
針對本發明之太陽能電池封裝材料片，為了作成在凹凸(A1)之凸部具有平均粗糙度Ra(A3)為0.3至2.5μm之凹凸(A3)的A面，如後所述，可舉出如下之方法：在太陽能電池封裝材料片之製造步驟，對A面轉印欲賦予該A面具有凹凸形狀之壓紋輥形狀。 In the solar cell encapsulating material sheet of the present invention, in order to form the surface A of the unevenness (A3) having an average roughness Ra (A3) of 0.3 to 2.5 μm in the convex portion of the unevenness (A1), as will be described later, In the method of manufacturing a solar cell encapsulating material sheet, an embossing roll shape having an uneven shape on the A side is applied to the A side transfer.
本發明之太陽能電池封裝材料片係該凹凸(A1)之平均間隔Sm(A1)較佳為100至2,000μm。藉由使平均間隔Sm(A1)成為2,000μm以下，容易獲得減低封裝材料片彼此、或封裝材料片與太陽能電池單元之接觸面積，抑制在保管時之黏連與積層時之太陽能電池單元位置偏移的效果。另一方面，藉由使凹凸(A1)之平均間隔Sm(A1)成為100μm以上，能夠使封裝材料片之空隙部減低，在積層時，能夠減低氣泡殘留於封裝材料片與太陽能電池之間而造成模組之外觀惡化的風險。 The solar cell encapsulating material sheet of the present invention preferably has an average interval Sm (A1) of the concavities and convexities (A1) of 100 to 2,000 μm. By setting the average interval Sm (A1) to 2,000 μm or less, it is easy to obtain a reduction in contact area between the package material sheets or the package material sheets and the solar battery cells, and to suppress the positional deviation of the solar battery cells during adhesion and lamination during storage. The effect of the shift. On the other hand, when the average interval Sm (A1) of the unevenness (A1) is 100 μm or more, the void portion of the encapsulating material sheet can be reduced, and at the time of lamination, the air bubbles can be reduced between the encapsulating material sheet and the solar cell. The risk of deteriorating the appearance of the module.
還有，所謂凹凸(A1)之平均間隔Sm(A1)係意指在Ra(A1)之測定所得之Sm值。 In addition, the average interval Sm (A1) of the unevenness (A1) means the Sm value obtained by the measurement of Ra (A1).
針對本發明之太陽能電池封裝材料片，為了使凹凸(A1)之平均間隔Sm(A1)成為100至2,000μm，如後所述，可舉出如下之方法：在太陽能電池封裝材料片之 製造步驟，對A面轉印欲賦予該A面具有凹凸的平均間隔Sm之壓紋輥形狀。 In the solar cell encapsulating material sheet of the present invention, in order to make the average interval Sm (A1) of the concavities and convexities (A1) 100 to 2,000 μm, as will be described later, a method is as follows: In the manufacturing step, the embossing roll shape to which the A surface has an uneven interval Sm of unevenness is applied to the A surface.
本發明之太陽能電池封裝材料片係該凹凸(A2)之平均間隔Sm(A2)較佳為5至80μm。藉由使微細的凹凸(A2)之平均間隔Sm(A2)成為80μm以下，與上述同樣地，抑制在保管時之黏連與積層時之太陽能電池單元位置偏移的效果。另一方面，藉由使凹凸(A2)之平均間隔Sm(A2)成為5μm以上，與上述同樣地，能夠減低氣泡殘留而造成模組之外觀惡化的風險。若使凹凸(A2)之平均間隔Sm(A2)低於5μm時，將增大氣泡殘留之風險。 The solar cell encapsulating material sheet of the present invention preferably has an average interval Sm (A2) of the concavities and convexities (A2) of 5 to 80 μm. By the average interval Sm (A2) of the fine concavities and convexities (A2) being 80 μm or less, the effect of the positional shift of the solar cell at the time of storage and deposition at the time of storage is suppressed similarly to the above. On the other hand, by making the average interval Sm (A2) of the unevenness (A2) 5 μm or more, it is possible to reduce the risk of deterioration of the appearance of the module due to the remaining bubbles. When the average interval Sm (A2) of the unevenness (A2) is less than 5 μm, the risk of bubble remaining is increased.
還有，凹凸(A2)之平均間隔Sm(A2)係意指在Ra(A2)之測定所得之Sm值。 Further, the average interval Sm (A2) of the unevenness (A2) means the Sm value obtained by the measurement of Ra (A2).
針對本發明之太陽能電池封裝材料片，為了使凹凸(A2)之平均間隔Sm(A2)成為5至80μm，如後所述，可舉出如下之方法：於太陽能電池封裝材料片之製造步驟，對A面轉印欲賦予該A面具有凹凸的平均間隔Sm之壓紋輥形狀。 In the solar cell encapsulating material sheet of the present invention, in order to make the average interval Sm (A2) of the concavities and convexities (A2) 5 to 80 μm, as will be described later, a method of manufacturing a solar cell encapsulating material sheet, An embossing roll shape to which the A surface has an uneven pitch Sm is applied to the A surface.
本發明之太陽能電池封裝材料片係針對該A面，片傳送方向之平均間隔Sm(A-MD)[μm]、與垂直於該片傳送方向之平均間隔Sm(A-TD)[μm]之比(Sm(A-MD)/Sm(A-TD))較佳為1.1至5。藉由增大片傳送方向之平均間隔Sm(A-MD)，沿著片傳送方向而成為長的凹凸形狀，於所後述的封裝材料片之製造時，能夠使壓紋輥與片之間的空氣夾帶量變少，減低因空氣夾帶造成氣泡之缺陷。藉由使該比(Sm(A-MD)/Sm(A-TD))成為1.1以上，容易獲 得氣泡缺點減低之效果；藉由使其成為5以下，能夠抑制耐黏連性之方向不均。 The solar cell encapsulating material sheet of the present invention is directed to the A side, the average interval Sm (A-MD) [μm] of the sheet conveying direction, and the average interval Sm (A-TD) [μm] perpendicular to the sheet conveying direction. The ratio (Sm(A-MD)/Sm(A-TD)) is preferably from 1.1 to 5. By increasing the average interval Sm (A-MD) in the sheet conveying direction and forming a long uneven shape along the sheet conveying direction, the air between the embossing roll and the sheet can be made at the time of manufacture of the packaging material sheet to be described later. The amount of entrainment is reduced, and the defects of air bubbles caused by air entrainment are reduced. By making the ratio (Sm(A-MD)/Sm(A-TD)) 1.1 or more, it is easy to obtain The effect of reducing the disadvantage of the bubble is obtained, and by making it 5 or less, the direction unevenness of the blocking resistance can be suppressed.
針對本發明之太陽能電池封裝材料片，為了使比(Sm(A-MD)/Sm(A-TD))成為1.1至5，如後所述，可舉出如下之方法：在太陽能電池封裝材料片之製造步驟，對A面轉印欲賦予該A面具有平均間隔Sm比之壓紋輥形狀。 In order to make the ratio (Sm(A-MD)/Sm(A-TD)) to 1.1 to 5, the solar cell encapsulating material sheet of the present invention may be exemplified by the following method: in a solar cell encapsulating material. In the manufacturing step of the sheet, the A-side transfer is to be given an embossing roll shape having an average interval Sm ratio to the A side.
本發明之封裝材料片，針對B面也能夠作成與A面同樣的凹凸形狀，較佳的該B面係平均粗糙度Ra(B1)具有0.5至4μm之凹凸(B1)，且該凹凸(B1)之平均間隔Sm(B1)為10至400μm。 The encapsulating material sheet of the present invention can also have the same uneven shape as the A surface for the B surface, and it is preferable that the B surface average roughness Ra (B1) has a concavity (B1) of 0.5 to 4 μm, and the unevenness (B1) The average interval Sm (B1) is 10 to 400 μm.
本發明之封裝材料片係將A面朝向太陽能電池單元側而積層，藉由積層而容易獲得抑制如上所述之太陽能電池單元位置偏移之效果。另一方面，B面係成為與玻璃或背面薄片連接，玻璃或背面薄片之摩擦係數越大者，越緊貼於玻璃或背面薄片，由於封裝材料片被固定而更難以引起積層時之加熱收縮，使單元之位置偏移變得越小。因而，針對B面，較佳為使凹凸(B1)之平均粗糙度Ra(B1)成為0.5至4μm，使其較A面之Ra(A1)為低而提高摩擦係數。藉由使Ra(B1)成為0.5μm以上，在能夠抑制封裝材料片彼此之黏連的觀點上較佳，藉由成為4μm以下，難以引起單元之位置偏移，故較佳。 The encapsulating material sheet of the present invention has a layer A side facing the solar cell unit side, and it is easy to obtain an effect of suppressing the positional shift of the solar cell unit as described above by laminating. On the other hand, the B surface is connected to the glass or the back sheet, and the friction coefficient of the glass or the back sheet is larger, and the closer to the glass or the back sheet, the more difficult it is to cause heat shrinkage when the laminate is formed because the sheet of the sealing material is fixed. , making the positional shift of the unit smaller. Therefore, it is preferable that the B surface has an average roughness Ra (B1) of the unevenness (B1) of 0.5 to 4 μm so as to be lower than Ra (A1) of the A surface to increase the friction coefficient. When Ra (B1) is 0.5 μm or more, it is preferable from the viewpoint of suppressing the adhesion of the encapsulating material sheets, and it is difficult to cause the positional shift of the cells by 4 μm or less.
又，針對凹凸(B1)之平均間隔Sm(B1)，藉由使其範圍成為40μm以下，在能夠抑制封裝材料片彼此黏連之觀點，故較佳；藉由成為10μm以上，於積層時，能 夠減低氣泡殘留於封裝材料片與玻璃、或背面薄片之間而造成模組之外觀惡化的風險。 In addition, the average interval Sm (B1) of the unevenness (B1) is preferably 40 μm or less, and it is preferable to prevent the sealing material sheets from sticking to each other, and it is preferably 10 μm or more. can It is enough to reduce the risk of bubbles remaining between the encapsulating material sheet and the glass or the back sheet, resulting in deterioration of the appearance of the module.
還有，B面之平均粗糙度Ra(B1)之測定方法係敘述於後。 Further, the measurement method of the average roughness Ra (B1) of the B surface is described later.
又，凹凸(B1)之平均間隔Sm(B1)係意指在Ra(B1)之測定所獲得的Sm值。 Moreover, the average interval Sm (B1) of the unevenness (B1) means the Sm value obtained by the measurement of Ra (B1).
針對本發明之太陽能電池封裝材料片，為了形成平均粗糙度Ra(B1)具有0.5至4μm之凹凸(B1)，且該凹凸(B1)之平均間隔Sm(B1)為10至400μm之B面，如後所述，可舉出如下之方法：在太陽能電池封裝材料片之製造步驟，對B面轉印欲賦予該B面具有凹凸形狀之壓紋輥形狀。 The solar cell encapsulating material sheet of the present invention has a concavity and convexity (B1) of 0.5 to 4 μm in order to form an average roughness Ra (B1), and an average interval Sm (B1) of the concavities and convexities (B1) is a B-plane of 10 to 400 μm. As will be described later, in the production step of the solar cell encapsulating material sheet, the embossing roll shape to which the B surface has an uneven shape is applied to the B surface transfer.
如此之太陽能電池封裝材料片係被裁斷成所要求的長度之切斷片而用於太陽能電池模組之製造。 Such a solar cell encapsulating material sheet is cut into pieces of a desired length and used for the manufacture of a solar cell module.
本發明之太陽能電池係藉由依序配置受光面保護材、本發明之太陽能電池封裝材料片、太陽能電池單元、本發明之太陽能電池封裝材料片、及背面保護材後封裝所獲得。由於本發明之封裝材料片能夠抑制在太陽能電池封裝材料保管時之黏連，於積層上述構造材料之際具優越之作業效率；由於能夠抑制藉由積層而使其一體化之際的單元位置偏移的不當情形，成為歷經長期的耐久性優越之太陽能電池模組。 The solar cell of the present invention is obtained by sequentially arranging a light-receiving surface protective material, a solar cell encapsulating material sheet of the present invention, a solar cell unit, a solar cell encapsulating material sheet of the present invention, and a back protective material post-packaging. Since the encapsulating material sheet of the present invention can suppress adhesion during storage of the solar cell encapsulating material, it has superior work efficiency in laminating the above-mentioned structural materials; and it is possible to suppress cell positional deviation at the time of integration by lamination The improper situation of shifting has become a solar cell module with superior durability over a long period of time.
還有，本發明之太陽能電池模組係藉由依序配置受光面保護材、本發明之太陽能電池封裝材料片、太陽能電池單元、本發明之太陽能電池封裝材料片、及 背面保護材後封裝所獲得的模組。還有，該太陽能電池較佳為藉由使其連接至該太陽能電池封裝材料片之A面側的方式來配置所獲得。藉由作成如此配置之太陽能電池模組，在變得更容易獲得抑制太陽能電池位置偏移的效果之觀點上較佳。 Further, the solar cell module of the present invention is configured by sequentially arranging a light-receiving surface protective material, a solar cell encapsulating material sheet of the present invention, a solar cell unit, a solar cell encapsulating material sheet of the present invention, and The module obtained after the back protective material is packaged. Further, the solar cell is preferably obtained by being configured to be connected to the side A side of the solar cell encapsulating material sheet. By forming the solar cell module thus configured, it is preferable to obtain an effect of suppressing the positional shift of the solar cell more easily.
還有，於本發明中，作為簡易評估保管時之黏連、與積層時之太陽能電池位置偏移之手法，採用各自的實施例記載之耐黏連性、A面之靜摩擦係數。任一值越小者，保管時之黏連、與單元之位置偏移的風險越小，故為良好。 Further, in the present invention, as a method of simply evaluating the adhesion at the time of storage and the displacement of the solar cell at the time of lamination, the blocking resistance and the static friction coefficient of the A surface described in the respective examples are used. The smaller the value, the better the risk of sticking during storage and the positional deviation from the position of the unit.
以下，針對為了獲得本發明之封裝材料片之較佳的製造方法而說明。 Hereinafter, a description will be given of a preferred production method for obtaining the encapsulating material sheet of the present invention.
本發明之太陽能電池封裝材料片之凹凸(凹凸(A1)、凹凸(A2)、凹凸(A3)、凹凸(B1))能夠從藉由具有同樣凹凸之金屬製的壓紋輥、或橡膠製的壓紋輥之轉印而能夠賦予。較佳係在使凹凸轉印性提高之目的下，可舉出將高溫狀態之程序片(於此，所謂程序片係意指形成凹凸之前的封裝材料片。亦即，藉由對程序片賦予凹凸(A1)、凹凸(A2)而成為本發明之封裝材料片。)導入對向於金屬製與橡膠製的2個壓紋輥之方法。又，同時欲將A面與B面之凹凸(凹凸(A1)、凹凸(A2)、凹凸(A3)、凹凸(B1))賦予太陽能電池封裝材料片中之情形，能夠將高溫狀態之程序片導入具有凹凸較粗的A面同樣凹凸之金屬壓紋輥、及與對向的凹凸較微細的B面具有同樣凹凸之橡膠製壓紋輥，一次賦予上述A面、B面二者之凹凸(凹凸 (A1)、凹凸(A2)、凹凸(A3)、凹凸(B1))。 The unevenness (the unevenness (A1), the unevenness (A2), the unevenness (A3), and the unevenness (B1)) of the solar cell encapsulating material sheet of the present invention can be made of an embossing roll made of a metal having the same unevenness or a rubber. The transfer of the embossing roll can be imparted. In order to improve the unevenness transfer property, a program sheet having a high temperature state is preferable (herein, the program sheet means a package material sheet before the unevenness is formed. That is, by giving a program sheet The unevenness (A1) and the unevenness (A2) are the packaging material sheets of the present invention.) A method of introducing two embossing rolls made of metal and rubber is introduced. At the same time, it is desirable to apply the unevenness of the A surface and the B surface (the unevenness (A1), the unevenness (A2), the unevenness (A3), and the unevenness (B1)) to the solar cell encapsulating material sheet, and the high temperature state can be processed. A metal embossing roll having the same unevenness on the A surface having a large unevenness and a rubber embossing roll having the same unevenness as the B surface having a fine unevenness are introduced, and the unevenness of the A surface and the B surface is given once ( Bump (A1), unevenness (A2), unevenness (A3), and unevenness (B1)).
下列顯示本實施例使用之測定法。只要無特別申明，測定n數係設為5，採用平均值。 The assays used in this example are shown below. As long as there is no special declaration, the measurement n number is set to 5, and the average value is used.
(1)凹凸(A1)之Ra(A1) (1) Ra (A1) of the unevenness (A1)
依據JIS B0601(2001)，利用形狀測定雷射顯微鏡VK-X100(Keyence公司製)，以倍率100拍攝封裝材料片A面之片表面。使用所得之影像，使評估長度成為2,500μm的方式來作成輪廓曲線，使截止值(λc)成為8.0mm、截止值(λs)成為0.25μm時之Ra值設為Ra(A1)。還有，任意之測定係針對成垂直之2方向，分別以n數10進行，採用2方向之平均值。 According to JIS B0601 (2001), a surface measuring laser microscope VK-X100 (manufactured by Keyence Co., Ltd.) was used to take the surface of the sheet of the sealing material sheet A at a magnification of 100. Using the obtained image, a contour curve was prepared so that the evaluation length became 2,500 μm, and the cutoff value (λc) was 8.0 mm, and the value of Ra when the cutoff value (λs) was 0.25 μm was Ra (A1). Further, arbitrary measurement is performed for each of the two directions perpendicular to each other with an n number of 10, and an average value of two directions is employed.
(2)凹凸(A1)之Sm(A1) (2) Sm (A1) of the unevenness (A1)
將在Ra(A1)之測定所得之Sm值(2方向之平均值)設為Sm(A1)。 The Sm value (the average value in the two directions) obtained by the measurement of Ra (A1) is Sm (A1).
(3)凹凸(A2)之Ra(A2) (3) Ra (A2) of the unevenness (A2)
針對封裝材料片之A面，以倍率400拍攝，將評估長度變更成100μm而作成輪廓曲線，進一步將截止值(λc)變更成0.080mm，其他係將利用相同於平均粗糙度Ra(A1)之方法測定時之Ra值(2方向之平均值)設為Ra(A2)。 The A side of the encapsulating material sheet was taken at a magnification of 400, the evaluation length was changed to 100 μm to form a contour curve, and the cutoff value (λc) was further changed to 0.080 mm, and the other lines were made to have the same average roughness Ra (A1). The Ra value (average value in the two directions) at the time of the measurement was set to Ra (A2).
(4)凹凸(A2)之Sm(A2) (4) Sm (A2) of the unevenness (A2)
將在Ra(A2)之測定所得之Sm值(2方向之平均值)設為Sm(A2)。 The Sm value (the average value in the two directions) obtained by the measurement of Ra (A2) is Sm (A2).
(5)凹凸(A3)之Ra(A3) (5) Ra (A3) of the bump (A3)
針對(1)所得之影像，依據JIS B0601(2001)，藉由劃出輪廓曲線與平均線而求出凹凸(A1)之凸部。然後，針對該凹凸(A1)中之任意選出的凸部(還有，此處所謂任意選出的凸部係設為在凸部長度為40μm以上者之中任意選出的凸部)，以400之倍率拍攝，作成將評估長度變更成40μm而作成輪廓曲線，進一步將截止值(λc)變更成0.080mm，其他係將利用相同於平均粗糙度Ra(A1)之方法測出與測定平均粗糙度Ra(A1)相同的部分時之Ra值(2方向之平均值)設為Ra(A3)。還有，在(1)所得之影像中之凹凸(A1)全部之凸部長度小於40μm之情形下，針對任意選出的凸部，將其評估長度設定成任意選出的凸部長度而測得。 With respect to the image obtained in (1), the convex portion of the unevenness (A1) is obtained by drawing a contour curve and an average line in accordance with JIS B0601 (2001). Then, the convex portion that is arbitrarily selected in the unevenness (A1) (the arbitrarily selected convex portion here is a convex portion that is arbitrarily selected among those having a convex portion length of 40 μm or more) is 400 In the magnification shooting, the evaluation curve was changed to 40 μm to form a contour curve, and the cutoff value (λc) was further changed to 0.080 mm. The other system measured and measured the average roughness Ra by the same method as the average roughness Ra (A1). The Ra value (average value in the two directions) at the same portion of (A1) is set to Ra (A3). In the case where all of the unevenness (A1) in the image obtained in (1) has a convex portion length of less than 40 μm, the estimated length of the arbitrarily selected convex portion is set to an arbitrarily selected convex portion length.
(6)Sm比(以下，將比(Sm(A-MD)/Sm(A-TD))簡稱為Sm比) (6) Sm ratio (hereinafter, the ratio (Sm(A-MD)/Sm(A-TD)) is simply referred to as Sm ratio)
以(1)中記載之條件，針對沿著片傳送方向而測定片之A面所求得的Sm值，將n數10之平均值設為Sm(A-MD)。 The average value of the n number of 10 is set to Sm (A-MD) with respect to the Sm value obtained by measuring the A side of the sheet along the sheet conveying direction under the conditions described in (1).
同樣地進行，將沿著垂直於該片傳送方向之方向而測定後所獲得的Sm值之平均值設為Sm(A-TD)。 In the same manner, the average value of the Sm values obtained after the measurement in the direction perpendicular to the sheet conveying direction is Sm (A-TD).
從所獲得的Sm(A-MD)及Sm(A-TD)，求得比(Sm(A-MD)/Sm(A-TD))。 The ratio (Sm(A-MD)/Sm(A-TD)) was obtained from the obtained Sm (A-MD) and Sm (A-TD).
(7)Ra(B1) (7) Ra (B1)
除了將倍率變更成200、評估長度變更成500μm、截止值(λc)變更成0.8mm之外，其他係將利用相同於平均粗糙度Ra(A1)之方法測定封裝材料B面時之Ra值(2方向之平均值)設為Ra(B1)。 In addition to changing the magnification to 200, the evaluation length to 500 μm, and the cutoff value (λc) to 0.8 mm, the Ra value of the B side of the packaging material is measured by the same method as the average roughness Ra (A1) ( The average of the two directions is set to Ra (B1).
(8)Sm(B1) (8)Sm(B1)
將在Ra(B1)之測定所得之Sm值(2方向之平均值)設為Sm(B1)。 The Sm value (the average value in the two directions) obtained by the measurement of Ra (B1) is Sm (B1).
(9)壓紋輥內有無夾帶空氣 (9) Whether there is entrained air in the embossing roller
在封裝材料片之製造時，以目視觀察壓紋輥通過後之金屬製壓紋輥與封裝材料片之間有無空氣。 At the time of manufacture of the encapsulating material sheet, the presence or absence of air between the metal embossing roll and the encapsulating material sheet after the passage of the embossing roll was visually observed.
(10)耐黏連性 (10) Resistance to blocking
從封裝材料片，切割成2片之片傳送方向100mm、寬度方向50mm大小之試驗片。使該試驗片之A面與B面連接的方式來重疊，利用在單面塗布有矽氧烷脫模劑之2片PET(聚對苯二甲酸乙二酯)脫模膜，使矽氧烷塗布面與封裝材料片連接的方式來夾住距離封裝材料片傳送方向一端2/3的面積(66mm×50mm)，進一步在玻璃板2片之間夾住距離封裝材料片傳送方向一端1/2的面積(50mm×50mm)，使施加於該面積之載重成為5kg的方式來將該PET脫模膜之外側重疊載置於玻璃板之上。在40℃之烘箱內24小時處理如上述所設置的試料後，卸除載重之狀態下，在23℃、濕度65%之環境中放置30分鐘以上。然後，從試料取下玻璃板(2片)。接著，180°剝離該試料2片(亦即，為試驗片之2片封裝材料片)，利用拉伸試驗機(島津製作所(股)製自動繪圖儀ASG-J)，以200mm/分鐘之條件下測定其剝離力。 From the sheet of encapsulating material, a test piece having a conveying direction of 100 mm and a width of 50 mm was cut into two pieces. Two sheets of PET (polyethylene terephthalate) release film coated with a decyl alkoxide release agent on one side were superposed on each other so that the A side and the B side of the test piece were connected to each other, and the decane was used. The coated surface is connected to the sheet of encapsulating material to sandwich an area (66 mm×50 mm) from one end of the conveying direction of the encapsulating material sheet, and further sandwiches the end of the conveying sheet from the sheet of the glass sheet by 1/2. The area (50 mm × 50 mm) was placed on the glass plate so that the outer side of the PET release film was superimposed so that the load applied to the area was 5 kg. After the sample set as described above was treated in an oven at 40 ° C for 24 hours, the load was removed and placed in an environment of 23 ° C and a humidity of 65% for 30 minutes or more. Then, the glass plate (2 pieces) was taken out from the sample. Next, two pieces of the sample (that is, two sheets of the packaging material for the test piece) were peeled off at 180°, and a tensile tester (automatic plotter ASG-J manufactured by Shimadzu Corporation) was used at a condition of 200 mm/min. The peeling force was measured.
(11)A面之靜摩擦係數 (11) Static friction coefficient of side A
利用摩擦計(新東科學(股)製HEIDON Tribo Gear μs TYPE：94i)而測定游標(黃銅、硬鉻處理、40g)與封裝材 料片之A面的靜摩擦係數。測定係以n數20進行，採用平均值。 Vernier (brass, hard chrome, 40g) and packaging materials were measured using a tribometer (HEIDON Tribo Gear μs TYPE: 94i) The coefficient of static friction of the A side of the web. The measurement was carried out at n number 20, and the average value was used.
將EVA樹脂(乙酸乙烯酯含量：28質量%、熔融流速：15g/10分鐘(190℃)、熔點：71℃)100質量份、作為交聯劑之三級丁基過氧化碳酸-2-乙基已酯(1小時半衰期溫度：119℃)0.7質量份供應至雙軸擠出機而熔融混煉，從T模頭擠出而獲得厚度450μm之EVA片。利用陶瓷加熱器，將該EVA片加熱直到溫度70℃，在該加熱狀態下，通入具有凹凸之SUS製(不鏽鋼製)的壓紋輥(表面溫度25℃)與矽橡膠製的壓紋輥(表面溫度25℃)之間(線壓：350N/cm)，獲得封裝材料片。 EVA resin (vinyl acetate content: 28% by mass, melt flow rate: 15 g/10 min (190 ° C), melting point: 71 ° C) 100 parts by mass, as a crosslinking agent, tertiary butyl peroxycarbonate-2-B The hexyl ester (1 hour half-life temperature: 119 ° C) 0.7 parts by mass was supplied to a twin-screw extruder to be melt-kneaded, and extruded from a T die to obtain an EVA sheet having a thickness of 450 μm. The EVA sheet was heated to a temperature of 70 ° C by a ceramic heater, and an embossing roll (surface temperature: 25 ° C) made of SUS (made of stainless steel) having irregularities and an embossing roll made of ruthenium rubber were passed through the heated state. (Between surface temperatures of 25 ° C) (linear pressure: 350 N/cm), a sheet of encapsulating material was obtained.
評估所得之片的Ra(A1)、Sm(A1)、Ra(A2)、Sm(A2)、Ra(A3)、Sm比、Ra(B1)、Sm(B1)、及壓紋輥內有無夾帶空氣、耐黏連性、A面之靜摩擦係數。將結果顯示於表1。如表1所示，為壓紋輥內夾帶空氣少、具優越之耐黏連性、靜摩擦係數之封裝材料片。 The obtained sheets were evaluated for Ra (A1), Sm (A1), Ra (A2), Sm (A2), Ra (A3), Sm ratio, Ra (B1), Sm (B1), and presence or absence of entrainment in the embossing roll. Air, blocking resistance, static friction coefficient of side A. The results are shown in Table 1. As shown in Table 1, it is a package material sheet with less air entrained in the embossing roll and excellent adhesion resistance and static friction coefficient.
除了使片之Ra(A1)變小的方式來變更SUS製壓紋輥之外，利用與實施例1同樣的方法作成封裝材料片。所得之封裝材料片係如表1所示，為壓紋輥內夾帶空氣少、具優越之耐黏連性、靜摩擦係數的封裝材料片。 An encapsulating material sheet was produced in the same manner as in Example 1 except that the SUS embossing roll was changed in such a manner that the Ra (A1) of the sheet was made small. The obtained encapsulating material sheet is shown in Table 1. It is a sheet of encapsulating material which has less air entrained in the embossing roll and has excellent blocking resistance and static friction coefficient.
除了使片之Ra(A1)變大的方式來變更SUS製壓紋輥之外，利用與實施例1同樣的方法作成封裝材料片。所得 之封裝材料片係如表1所示，為壓紋輥內夾帶空氣少、具優越之耐黏連性、靜摩擦係數的封裝材料片。 A sealing material sheet was produced in the same manner as in Example 1 except that the SUS embossing roll was changed in such a manner that the Ra (A1) of the sheet was increased. Income The package material sheet is shown in Table 1. It is a package material sheet with less air entrained in the embossing roll and excellent adhesion resistance and static friction coefficient.
除了使片之Ra(A1)變大的方式來變更SUS製壓紋輥之外，利用與實施例1同樣的方法作成封裝材料片。所得之封裝材料片係如表1所示，為壓紋輥內夾帶空氣少、具優越之耐黏連性、靜摩擦係數的封裝材料片。 A sealing material sheet was produced in the same manner as in Example 1 except that the SUS embossing roll was changed in such a manner that the Ra (A1) of the sheet was increased. The obtained encapsulating material sheet is shown in Table 1. It is a sheet of encapsulating material which has less air entrained in the embossing roll and has excellent blocking resistance and static friction coefficient.
除了使片之Ra(A2)變小的方式來變更SUS製壓紋輥之外，利用與實施例1同樣的方法作成封裝材料片。所得之封裝材料片係如表1所示，為壓紋輥內夾帶空氣少、具優越之耐黏連性、靜摩擦係數的封裝材料片。 An encapsulating material sheet was produced in the same manner as in Example 1 except that the SUS embossing roll was changed in such a manner that the Ra (A2) of the sheet was made small. The obtained encapsulating material sheet is shown in Table 1. It is a sheet of encapsulating material which has less air entrained in the embossing roll and has excellent blocking resistance and static friction coefficient.
除了使片之Ra(A2)變大的方式來變更SUS製壓紋輥之外，利用與實施例1同樣的方法作成封裝材料片。所得之封裝材料片係如表1所示，為壓紋輥內夾帶空氣少、具優越之耐黏連性、靜摩擦係數的封裝材料片。 A sealing material sheet was produced in the same manner as in Example 1 except that the SUS embossing roll was changed so that the Ra (A2) of the sheet was increased. The obtained encapsulating material sheet is shown in Table 1. It is a sheet of encapsulating material which has less air entrained in the embossing roll and has excellent blocking resistance and static friction coefficient.
除了使片之Sm(A1)變大的方式來變更SUS製壓紋輥之外，利用與實施例1同樣的方法作成封裝材料片。所得之封裝材料片係如表1所示，雖然耐黏連性、靜摩擦係數稍微變差，但為壓紋輥內夾帶空氣少的封裝材料片。 An encapsulating material sheet was produced in the same manner as in Example 1 except that the SUS embossing roll was changed so that the Sm (A1) of the sheet was increased. The obtained packaging material sheet is shown in Table 1. Although the blocking resistance and the static friction coefficient were slightly deteriorated, it was a sheet of encapsulating material with less air entrained in the embossing roll.
除了使片之Ra(A3)變小的方式來變更SUS製壓紋輥之外，利用與實施例1同樣的方法作成封裝材料片。所得 之封裝材料片係如表1所示，雖然耐黏連性、靜摩擦係數稍微變差，但為壓紋輥內夾帶空氣少的封裝材料片。 A sealing material sheet was produced in the same manner as in Example 1 except that the SUS embossing roll was changed in such a manner that the Ra (A3) of the sheet was made smaller. Income The package material sheet is as shown in Table 1. Although the blocking resistance and the static friction coefficient are slightly deteriorated, it is a sheet of encapsulating material with less air entrained in the embossing roll.
除了使片之Sm(A2)變大的方式來變更SUS製壓紋輥之外，利用與實施例1同樣的方法作成封裝材料片。所得之封裝材料片係如表1所示，雖然耐黏連性、靜摩擦係數稍微變差，但為壓紋輥內夾帶空氣少的封裝材料片。 A sealing material sheet was produced in the same manner as in Example 1 except that the SUS embossing roll was changed so that the Sm (A2) of the sheet was increased. The obtained packaging material sheet is shown in Table 1. Although the blocking resistance and the static friction coefficient were slightly deteriorated, it was a sheet of encapsulating material with less air entrained in the embossing roll.
除了使片之Sm比成為1.0的方式來變更SUS製壓紋輥之外，利用與實施例1同樣的方法作成封裝材料片。所得之封裝材料片係如表1所示，雖然確認壓紋輥內夾帶空氣，但為具優越之耐黏連性、靜摩擦係數的封裝材料片。 An encapsulating material sheet was produced in the same manner as in Example 1 except that the SUS embossing roll was changed so that the Sm ratio of the sheet was 1.0. The obtained encapsulating material sheets are as shown in Table 1. Although it was confirmed that air was entrained in the embossing roll, it was a sheet of encapsulating material having excellent adhesion resistance and static friction coefficient.
除了使片之Ra(B1)變小的方式來變更矽橡膠製壓紋輥之外，利用與實施例1同樣的方法作成封裝材料片。所得之封裝材料片係如表1所示，雖然耐黏連性稍微變差，但為壓紋輥內夾帶空氣少、具優越之靜摩擦係數的封裝材料片。 An encapsulating material sheet was produced in the same manner as in Example 1 except that the enamel rubber embossing roll was changed in such a manner that the Ra (B1) of the sheet was reduced. The obtained encapsulating material sheet is shown in Table 1. Although the blocking resistance was slightly deteriorated, it was a sheet of encapsulating material which contained less air and had a superior static friction coefficient in the embossing roll.
除了使片之Sm(B1)變大的方式來變更矽橡膠製壓紋輥之外，利用與實施例1同樣的方法作成封裝材料片。所得之封裝材料片係如表1所示，雖然耐黏連性稍微變差，但為壓紋輥內夾帶空氣少、具優越之靜摩擦係數的封裝材料片。 An encapsulating material sheet was produced in the same manner as in Example 1 except that the enamel rubber embossing roll was changed so that the Sm (B1) of the sheet was increased. The obtained encapsulating material sheet is shown in Table 1. Although the blocking resistance was slightly deteriorated, it was a sheet of encapsulating material which contained less air and had a superior static friction coefficient in the embossing roll.
除了使片之Sm(A2)變大的方式來變更SUS製壓紋輥之外，利用與實施例1同樣的方法作成封裝材料片。所得之封裝材料片係如表1所示，為壓紋輥內夾帶空氣少、具優越之耐黏連性、靜摩擦係數的封裝材料片。 A sealing material sheet was produced in the same manner as in Example 1 except that the SUS embossing roll was changed so that the Sm (A2) of the sheet was increased. The obtained encapsulating material sheet is shown in Table 1. It is a sheet of encapsulating material which has less air entrained in the embossing roll and has excellent blocking resistance and static friction coefficient.
除了使片之Ra(A1)變小的方式來變更SUS製壓紋輥之外，利用與實施例1同樣的方法作成封裝材料片。所得之封裝材料片係如表1所示，雖然壓紋輥內夾帶空氣少，但為耐黏連性、靜摩擦係數變差的封裝材料片。 An encapsulating material sheet was produced in the same manner as in Example 1 except that the SUS embossing roll was changed in such a manner that the Ra (A1) of the sheet was made small. The obtained encapsulating material sheets are as shown in Table 1. Although the embossing rolls contained less air, they were sheets of encapsulating material which were inferior in blocking resistance and static friction coefficient.
除了使片之Ra(A2)變小的方式來變更SUS製壓紋輥之外，利用與實施例1同樣的方法作成封裝材料片。所得之封裝材料片係如表1所示，雖然壓紋輥內夾帶空氣少，但為耐黏連性、靜摩擦係數變差的封裝材料片。 An encapsulating material sheet was produced in the same manner as in Example 1 except that the SUS embossing roll was changed in such a manner that the Ra (A2) of the sheet was made small. The obtained encapsulating material sheets are as shown in Table 1. Although the embossing rolls contained less air, they were sheets of encapsulating material which were inferior in blocking resistance and static friction coefficient.
在表中，所謂「Sm比」係表示「Sm(A-MD)/Sm(A-TD)」。 In the table, the "Sm ratio" means "Sm(A-MD)/Sm(A-TD)".
由於本發明之封裝材料片同時能夠抑制在太陽能電池封裝材料片之黏連與在太陽能電池製造步驟的積層時之單元位置偏移的不當情形，適於作為太陽能電池用之封裝材料片使用。 Since the encapsulating material sheet of the present invention can simultaneously suppress an improper situation in which the cell position of the solar cell encapsulating material sheet is overlapped with the lamination of the solar cell manufacturing step, it is suitable for use as a packaging material sheet for a solar cell.
A‧‧‧輪廓曲線 A‧‧‧ contour curve
B‧‧‧凹凸(A1) B‧‧‧ bump (A1)
C‧‧‧凹凸(A2) C‧‧‧ bump (A2)
Claims (8)
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| JP (1) | JPWO2014045692A1 (en) |
| KR (1) | KR20150059738A (en) |
| CN (1) | CN104619492B (en) |
| TW (1) | TW201413995A (en) |
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| US11565507B2 (en) | 2014-04-09 | 2023-01-31 | Sekisui Chemical Co., Ltd. | Laminated-glass intermediate film, rolled body, laminated glass, and method for producing laminated glass |
| JPWO2018062074A1 (en) * | 2016-09-27 | 2019-07-04 | 東レフィルム加工株式会社 | Transfer film for soft resin layer |
| JPWO2018083733A1 (en) * | 2016-11-01 | 2019-01-17 | 三菱電機株式会社 | Solar cell module sealing material and method for manufacturing solar cell module |
| US11929444B2 (en) | 2020-06-16 | 2024-03-12 | Jinko Green Energy (Shanghai) Management Co., LTD | Functional part, photovoltaic module and method for manufacturing photovoltaic module |
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| JP2010192804A (en) * | 2009-02-20 | 2010-09-02 | Bridgestone Corp | Sealing film for solar cell and solar cell using the same |
| JP5604191B2 (en) * | 2010-06-25 | 2014-10-08 | 株式会社ブリヂストン | Ethylene-vinyl acetate copolymer film, and laminated glass and solar cell using the same |
| JP2012099713A (en) * | 2010-11-04 | 2012-05-24 | Achilles Corp | Solar cell sealing material |
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2013
- 2013-07-18 JP JP2013535183A patent/JPWO2014045692A1/en active Pending
- 2013-07-18 WO PCT/JP2013/069523 patent/WO2014045692A1/en active Application Filing
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- 2013-07-18 KR KR1020157005767A patent/KR20150059738A/en not_active Application Discontinuation
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| CN104619492A (en) | 2015-05-13 |
| WO2014045692A1 (en) | 2014-03-27 |
| JPWO2014045692A1 (en) | 2016-08-18 |
| CN104619492B (en) | 2016-08-24 |
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