WO2011083790A1 - 太陽電池用集電シート - Google Patents
太陽電池用集電シート Download PDFInfo
- Publication number
- WO2011083790A1 WO2011083790A1 PCT/JP2011/050025 JP2011050025W WO2011083790A1 WO 2011083790 A1 WO2011083790 A1 WO 2011083790A1 JP 2011050025 W JP2011050025 W JP 2011050025W WO 2011083790 A1 WO2011083790 A1 WO 2011083790A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wiring
- solar cell
- current collector
- base material
- collector sheet
- Prior art date
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- 229920005989 resin Polymers 0.000 claims abstract description 72
- 239000011347 resin Substances 0.000 claims abstract description 72
- 239000000463 material Substances 0.000 claims abstract description 62
- 239000011888 foil Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- 238000010030 laminating Methods 0.000 claims abstract description 7
- 238000000059 patterning Methods 0.000 claims abstract description 5
- 229910000679 solder Inorganic materials 0.000 claims description 17
- 229920006290 polyethylene naphthalate film Polymers 0.000 claims description 2
- 238000005476 soldering Methods 0.000 abstract description 20
- 238000010438 heat treatment Methods 0.000 abstract description 18
- 230000037303 wrinkles Effects 0.000 abstract description 16
- 238000000034 method Methods 0.000 description 25
- 230000008569 process Effects 0.000 description 12
- 239000011112 polyethylene naphthalate Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 4
- -1 polyethylene naphthalate Polymers 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- QKAJPFXKNNXMIZ-UHFFFAOYSA-N [Bi].[Ag].[Sn] Chemical compound [Bi].[Ag].[Sn] QKAJPFXKNNXMIZ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- JWVAUCBYEDDGAD-UHFFFAOYSA-N bismuth tin Chemical compound [Sn].[Bi] JWVAUCBYEDDGAD-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910000498 pewter Inorganic materials 0.000 description 1
- 239000010957 pewter Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229940100890 silver compound Drugs 0.000 description 1
- 150000003379 silver compounds Chemical class 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000037373 wrinkle formation Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0516—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module specially adapted for interconnection of back-contact solar cells
-
- 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/202—Conductive
-
- 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 current collector sheet, and more specifically, by laminating a metal foil on the surface of a sheet-like resin base material, and patterning the metal foil into a desired wiring shape, thereby providing wiring. It is related with the current collection sheet for solar cells in which was formed.
- a solar cell module constituting a solar cell has a structure in which a transparent front substrate, a front surface side sealing material sheet, a solar cell, a back side sealing material sheet, and a back surface protection sheet are laminated in order from the light receiving surface side. Yes, it has a function of generating power when sunlight enters the solar battery cell.
- a plurality of solar cells that generate power inside the solar cell module are usually provided inside the solar cell module, and are configured to obtain necessary voltages and currents by connecting them in series and parallel. Yes.
- a solar cell current collector sheet in which a metal foil that becomes a wiring pattern is laminated on the surface of a resin sheet as a base material is used (patent) Reference 1).
- the metal foil which is the wiring provided in the collector sheet for solar cells, and the output electrode of a photovoltaic cell are electrically joined by soldering.
- a metal foil is laminated on the entire surface of the base material, and then this metal The foil may be etched so as to have a desired wiring pattern by photolithography.
- solder When joining the wiring on the solar cell current collector sheet and the output electrode of the solar battery cell by soldering, in general, solder is previously attached to the wiring on the solar battery current collector sheet, and the A battery cell is mounted and the current collection sheet for solar cells is heated. By this heating, the solder attached to the wiring melts and flows, and the molten solder adheres to the output electrode of the solar battery cell. Thereafter, when heating of the solar cell current collector sheet is stopped, the molten solder is solidified between the output electrode of the solar battery cell and the wiring on the solar cell current collector sheet. Thereby, the output electrode of a photovoltaic cell and the wiring on the current collection sheet for solar cells are electrically joined.
- the solar cell current collector sheet is subjected to the heating necessary to melt the solder, so that a heat-resistant and strong material is used.
- a sheet obtained by biaxially stretching a heat-resistant resin is preferably exemplified.
- the biaxially stretched sheet is generally different in the degree of stretching between the TD direction (width direction) and the MD direction (length direction) in the biaxial stretching process.
- the thermal shrinkage rate is different between the MD direction and the MD direction. This results in surface formation in such a manner that the thermal contraction rate differs between the vertical and horizontal sides of the solar cell current collector sheet.
- the solar battery cell and the solar battery current collector sheet are joined by soldering, the vertical direction or the horizontal direction of the solar battery current collector sheet is greatly shrunk by heating and joined to the solar battery cell. It leads to generating wrinkles in the vertical direction or the horizontal direction of the current collector sheet for solar cells. If wrinkles are present in the solar cell current collector sheet joined to the solar cell, when the solar cell is modularized, it may cause unexpected stress on the solar cell and It is not preferable from the viewpoint.
- This invention is made
- the present inventors have formed a wiring having an anisotropy on a current collector sheet for a solar cell and set the direction of the wiring having an anisotropy in two directions. It has been found that wrinkles can be suppressed from occurring in the solar cell current collector sheet by matching with a specific direction in the axially stretched resin sheet, even after heating in soldering.
- the present invention has been completed based on such findings.
- the present invention is (1) a solar battery collector in which wiring is formed by laminating a metal foil on the surface of a sheet-shaped resin base material and patterning the metal foil to have a desired wiring shape.
- the resin base material is a biaxially stretched sheet that is stretched in the TD direction and MD direction of a biaxial stretching device after being heated, and is formed on the solar cell current collector sheet
- the wiring has anisotropy because the total extension of one direction component of the wiring is longer than the total extension of other direction components of the wiring, and the one direction component And the direction of MD direction when the said resin base material is extended
- the wiring has a comb shape, the length direction of the comb-shaped tooth portion coincides with the direction of the one-way component, and the length direction of the peak portion of the comb shape Is the current collector sheet for solar cells according to (1), which coincides with the direction of the other direction component.
- the resin base material is a biaxially stretched polyethylene naphthalate film having a thickness of 12 ⁇ m to 250 ⁇ m, and the thermal shrinkage in the MD direction at 150 ° C. for 30 minutes according to JIS-C2318 is 0.00.
- this invention is a solar cell module provided with the member by which the collector sheet for solar cells in any one of (4) (1) to (3) and the electrode of a solar cell element are joined via solder
- a resin-made solar cell current collector sheet capable of suppressing generation of wrinkles associated with heat treatment in soldering.
- FIG. 1 is a partial plan view showing a resin base material used in one embodiment of the solar cell current collector sheet of the present invention.
- FIG. 2 is a plan view showing an embodiment of the solar cell current collector sheet of the present invention.
- a metal foil is laminated on the surface of a sheet-like resin base material 2 and patterned so that the metal foil has a comb-like wiring shape. 3 is formed.
- the resin base material 2 used in the solar cell current collector sheet 1 of the present embodiment will be described.
- the resin base material 2 used in the solar cell current collector sheet 1 of the present embodiment is obtained by subjecting a resin molded into a sheet shape to biaxial stretching.
- Examples of the biaxial stretching process in the present embodiment include a sequential biaxial stretching process using a roll and a tenter.
- the produced resin base material 2 is stretched in two directions (MD direction and TD direction) orthogonal to each other, for example, by a sequential biaxial stretching processing device including a roll and a tenter. Biaxially stretched.
- the resin base material 2 is heated to a temperature higher than Tg, and stretched in the MD direction by the tension between the rolls of the biaxial stretching apparatus.
- the film is stretched in the TD direction by a tenter of a stretching apparatus. Since this series of operations is performed while heating the resin base material 2, the resin base material 2 is partially crystallized while the molecules contained therein are aligned (oriented) along the stretching direction.
- MD Machine Direction
- TD Transverse Direction
- the stretch ratio in the machine length direction (stretch ratio in the MD direction) due to the tension between the rolls is larger than the stretch ratio in the machine width direction (stretch ratio in the TD direction) by the tenter. It becomes.
- the heat shrinkage rate of the resin base material 2 subjected to the biaxial stretching process is generally MD direction> TD direction.
- PEN polyethylene naphthalate
- the heat shrinkage rate at 150 ° C. ⁇ 30 minutes according to JIS-C2318 has a degree of MD 0.6%.
- TD is 0.1%.
- the resin used for producing the resin base material 2 is not particularly limited as long as it has heat resistance against heat treatment in soldering.
- examples of such a resin include polyethylene naphthalate, polyimide, polyamide, polyimide amide, polyethylene terephthalate and the like. Among them, polyethylene naphthalate is preferable from the viewpoint of heat resistance and cost.
- the thickness of the resin substrate 2 is preferably 12 ⁇ m to 250 ⁇ m, more preferably 25 ⁇ m to 75 ⁇ m, and most preferably 38 ⁇ m to 50 ⁇ m. If it is less than 12 ⁇ m, it is not preferable in terms of planarity, and if it exceeds 250 ⁇ m, it is not preferable in terms of thermal conductivity.
- the thermal shrinkage in the MD direction at 150 ° C. for 30 minutes according to JIS-C2318 of the resin base material 2 is preferably 0.2% or more and 1.0% or less, and is 0.3% or more and 0.7% or less. More preferably. If it is less than 0.3%, the shrinkage rate is low and the dimensional change is small, so that the effect of the present invention cannot be exerted remarkably. If it exceeds 0.7%, wrinkles will occur even if the present invention is applied. Therefore, it is not preferable.
- the heat shrinkage rate varies depending on the sheet thickness, the Tg (glass transition point) and Tm (melting point) of the resin, the measurement temperature, and the time. Therefore, the above 150 ° C.
- the thermal shrinkage rate in the TD direction is usually smaller than that in the MD direction, and an example measured under the same conditions is 0.2% or less, so MD> TD in the thermal shrinkage rate.
- a metal foil is laminated on the surface of the resin base 2 as described above.
- This metal foil will be the wiring 3 in the solar cell current collector sheet 1 in the future.
- An example of such a metal foil is a copper foil.
- a method of laminating a metal foil on the surface of the resin base material 2 a known method can be used without any particular limitation. As such a laminating method, dry laminating using a urethane adhesive is exemplified.
- the thickness of this metal foil is not specifically limited, what is necessary is just to determine suitably the characteristic etc. which are requested
- the metal foil laminated on the surface of the resin substrate 2 is patterned into a desired shape by a known method to form a wiring pattern (wiring 3) which is an electric wiring.
- the method for patterning the metal foil is not particularly limited, but an etching process by a photolithography method is exemplified.
- the shape of the wiring 3 has anisotropy, and the direction of the wiring 3 having the anisotropy is specified on the resin base material 2 so that the solar cell current collector sheet 1 is heat treated. Suppresses the generation of wrinkles.
- the wiring 3 in the present embodiment has a comb shape, and two comb-shaped wirings 3 are provided as a set so that the portions 31 that become teeth are engaged with each other.
- This wiring 3 has a portion 31 that becomes a tooth and a portion 32 that becomes a peak, and the total extension of the portion 31 that becomes a tooth is longer than the total extension of the portion 32 that becomes a peak.
- the direction of the portion 31 that becomes a tooth and the direction of the portion 32 that becomes a peak are orthogonal to each other.
- the wiring 3 in the present embodiment when considering two directional components orthogonal to each other, the total extension of the unidirectional component of the wiring 3 (directional component of the tooth portion 31) is the other directional component of the wiring 3 (peak It is longer than the direction component of the portion 32, and has anisotropy.
- the wiring 3 in the present embodiment is characterized in that the direction of this one-direction component (the direction component of the portion 31 to be a tooth) matches the direction of the MD direction when the resin base material 2 is stretched.
- the density of the wiring whose direction component is the MD direction of the resin base material 2 is increased.
- the resin base material 2 has a large thermal shrinkage in the MD direction during heat treatment during soldering.
- the wiring 3 having a high density in the MD direction serves as a support for suppressing deformation in the MD direction, and the resin base material 2 tends to shrink in the MD direction. To suppress.
- the solar cell current collector sheet 1 is suppressed from wrinkling due to heat treatment during soldering. That is, the solar cell current collector sheet 1 is subjected to a heat treatment when an electronic component is mounted on the surface thereof, and the formation of wrinkles associated with the resin base material 2 contracting due to the heat treatment is suppressed.
- a copper foil having a comb shape shown in FIG. A wiring 3 having a thickness of 35 ⁇ m was formed.
- the longitudinal direction of the part 31 which becomes the teeth of the comb-shaped wiring 3 was made to coincide with the MD direction of the resin base material 2. Therefore, the total extension of one direction component of the wiring 3 (direction component of the tooth portion 31) is longer than the other direction component of the wiring 3 (direction component of the peak portion 32), and thus has anisotropy.
- the one-way component coincides with the MD direction of the resin base material 2 as described above.
- the MD direction thermal contraction rate of the solar cell collector sheet 1 was 0.05% (150 ° C. ⁇ 30 minutes). From this, in the solar cell current collector sheet 1, the thermal contraction rate in the MD direction was reduced to about 1/8 compared with the original resin base material 2. From this, it can be understood that wrinkle formation in the MD direction is suppressed even when the solar cell current collector sheet 1 is subjected to heat treatment for soldering when an electronic component is mounted on the surface thereof.
- the solar cell current collector sheet 1 of the present embodiment is preferably used for wiring of solar cells. This will be described with reference to FIG.
- FIG. 3 is a perspective view showing a state in which the solar battery cells 4 are joined to the solar battery collector sheet 1 of the present embodiment.
- the surface of the wiring 3 and the output electrode of the solar cell 4 are joined by soldering. Thereby, the solar cell current collector sheet 1 and the solar battery cell 4 are electrically joined, and the solar battery current collector sheet 1 becomes an electrical wiring inside the solar battery module.
- the electrode of the solar battery cell 4 is an electrode for outputting the electric power generated by the solar battery cell 4 by receiving light to the outside of the solar battery cell 4.
- this electrode is made of silver or a silver compound, for example.
- two comb-shaped wirings 3 are formed as a set on the solar cell current collector sheet 1 of the present embodiment.
- one of the set of wires 3 is joined to the positive electrode provided on the back surface of the solar battery cell 4, and the other of the set of wires 3 is joined to the negative electrode provided on the back surface of the solar battery cell 4.
- solder In order to join the wiring 3 of the solar battery collector sheet 1 and the electrode of the solar battery cell 4 by soldering, either one or both of the electrode of the solar battery cell 4 and the wiring 3 of the solar battery collector sheet 1 are used. Solder is attached to the surface of the solar cell, and further, the solar battery cell 4 and the solar battery current collector sheet 1 so that the position of the electrode of the solar battery cell 4 and the position of the wiring 3 of the solar battery current collector sheet 1 coincide with each other. And then the solar cell current collector sheet 1 may be heated at a temperature at which the solder melts.
- solder used in the soldering process a conventionally known solder can be used without any particular limitation. Examples of such solder include lead-tin alloy solder, silver-containing solder, lead-free solder, tin-bismuth solder, tin-bismuth-silver solder, and the like.
- the resin base material 2 of the solar cell current collector sheet 1 when the resin base material 2 of the solar cell current collector sheet 1 is heated, the resin base material 2 does not shrink much in the TD direction in the stretching process, but greatly heats in the MD direction in the stretching process. Shrink. For this reason, normally, when a solar battery current collector sheet using such a resin base material is joined to a solar battery cell by soldering, wrinkles are generated in the solar battery current collector sheet by heat treatment in the soldering process. Will do. The presence of such wrinkles is not preferable from the viewpoint of causing stress to the solar battery cell inside the solar battery module and possibly reducing the life of the solar battery module.
- the wiring 3 has a comb shape, and the tooth portion 31 and the peak portion 32 are orthogonal to each other. Furthermore, the total extension of the direction component of the portion 31 that becomes the tooth is longer than the total extension of the direction component of the portion 32 that becomes the peak.
- the direction of the direction component of the portion 31 serving as a tooth matches the MD direction of the resin base material 2.
- the direction component of the tooth portion 31 in FIG. 2 coincides with the TD direction of the resin base material 2, that is, a solar cell current collector sheet that does not have the configuration of the present invention.
- the total extension of the directional component in the TD direction of the resin base material is larger than the total extension of the directional component in the MD direction of the resin base material.
- transformation of the resin base material by wiring becomes larger with respect to the TD direction than the MD direction of the resin base material. For this reason, when the resin base material tries to thermally shrink in the MD direction, the effect of suppressing deformation due to wiring is reduced, and the resin base material is thermally contracted in the MD direction. For this reason, when the solar cell current collector sheet and the solar battery cells are joined by soldering, wrinkles are generated in the solar battery current collector sheet.
- the solar cell current collector sheet 1 of the present embodiment having the configuration of the present invention it is understood that generation of wrinkles due to heat treatment in soldering can be suppressed.
- the wiring 3 has a comb shape, but is not limited to such a shape.
- the wiring 3 is anisotropic because the total extension of one direction component of the wiring 3 is longer than the total extension of other direction components when two directional components orthogonal to each other are taken into consideration. It is necessary to have. And it is necessary to make the direction of the direction component with the long total extension coincide with the MD direction of the resin base material 2 among the directions of the two direction components.
- the solar cell current collector sheet 1 of the above embodiment was used for wiring in the solar cell module, the solar cell current collector sheet of the present invention is not limited to this application.
- the resin base material 2 to which the biaxial stretching process by the roll and the tenter was performed was used for the solar cell current collector sheet 1 of the above embodiment, the biaxial stretching process was performed by another method.
- a resin base material may be used. In this case, if the resin base material has different heat shrinkage rates in the TD direction and the MD direction, the effect of the present invention can be obtained.
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Abstract
Description
以上、具体的な実施形態を示して本発明の太陽電池用集電シートについて説明したが、本発明は、以上の実施形態に何ら制限されず、本発明の構成の範囲において適宜変更を加えて実施することができる。
2 樹脂基材
3 配線
4 太陽電池セル
Claims (4)
- シート状である樹脂基材の表面に金属箔を積層し、当該金属箔を所望の配線形状となるようにパターニングすることで、配線が形成された太陽電池用集電シートであって、
前記樹脂基材は、二軸延伸装置のTD方向及びMD方向に延伸加工された二軸延伸シートであり、
前記太陽電池用集電シートに形成された配線は、互いに直行する二つの方向成分を考慮したとき、前記配線の一方向成分の総延長が前記配線の他方向成分の総延長よりも長いことにより異方性を有し、
前記一方向成分の向きと、前記樹脂基材が延伸された際のMD方向の向きと、が一致することを特徴とする太陽電池用集電シート。 - 前記配線が櫛型形状であり、前記櫛型形状の歯部分の長さ方向が前記一方向成分の方向と一致し、前記櫛型形状の峰部分の長さ方向が前記他方向成分の方向と一致する請求項1記載の太陽電池用集電シート。
- 前記樹脂基材は、厚さ12μmから250μmの二軸延伸ポリエチレンナフタレートフィルムであり、JIS-C2318による150℃×30分でのMD方向の熱収縮率が0.2%以上1.0%以下である請求項1又は2記載の太陽電池用集電シート。
- 請求項1から3いずれか記載の太陽電池用集電シートと、太陽電池素子の電極とがハンダを介して接合されている部材を備える太陽電池モジュール。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/521,657 US9006561B2 (en) | 2010-01-06 | 2011-01-05 | Collector sheet for solar cell |
KR1020127017284A KR101445462B1 (ko) | 2010-01-06 | 2011-01-05 | 태양 전지용 집전 시트 |
CN201180005272.5A CN102742023B (zh) | 2010-01-06 | 2011-01-05 | 太阳能电池用集电片 |
JP2011549004A JP5590047B2 (ja) | 2010-01-06 | 2011-01-05 | 太陽電池用集電シート |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-000908 | 2010-01-06 | ||
JP2010000908 | 2010-01-06 |
Publications (1)
Publication Number | Publication Date |
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WO2011083790A1 true WO2011083790A1 (ja) | 2011-07-14 |
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PCT/JP2011/050025 WO2011083790A1 (ja) | 2010-01-06 | 2011-01-05 | 太陽電池用集電シート |
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US (1) | US9006561B2 (ja) |
JP (1) | JP5590047B2 (ja) |
KR (1) | KR101445462B1 (ja) |
CN (1) | CN102742023B (ja) |
TW (1) | TWI505478B (ja) |
WO (1) | WO2011083790A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013042101A (ja) * | 2011-07-19 | 2013-02-28 | Dainippon Printing Co Ltd | 太陽電池モジュール用の封止材シートの製造方法 |
JP2014174656A (ja) * | 2013-03-07 | 2014-09-22 | Dainippon Printing Co Ltd | タッチパネル用電極部材、タッチパネル、及び画像表示装置 |
WO2016157682A1 (ja) * | 2015-03-30 | 2016-10-06 | パナソニックIpマネジメント株式会社 | 太陽電池モジュール |
WO2016157696A1 (ja) * | 2015-03-31 | 2016-10-06 | パナソニックIpマネジメント株式会社 | 太陽電池モジュール |
Families Citing this family (2)
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JP6941022B2 (ja) * | 2017-10-06 | 2021-09-29 | 株式会社ディスコ | 拡張方法及び拡張装置 |
KR102702416B1 (ko) * | 2022-11-03 | 2024-09-04 | 한화솔루션 주식회사 | 태양 전지 패널 |
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JP2007281071A (ja) * | 2006-04-04 | 2007-10-25 | Teijin Dupont Films Japan Ltd | アモルファスシリコン太陽電池基板用二軸配向ポリエステルフィルム |
JP2009045888A (ja) * | 2007-08-22 | 2009-03-05 | Teijin Dupont Films Japan Ltd | 太陽電池裏面保護膜用フィルム |
JP2009188391A (ja) * | 2008-01-09 | 2009-08-20 | Arata Yokoyama | 光起電力素子、その製造方法および光起電力素子を作製するための光起電力素子セット |
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2011
- 2011-01-05 KR KR1020127017284A patent/KR101445462B1/ko active IP Right Grant
- 2011-01-05 US US13/521,657 patent/US9006561B2/en not_active Expired - Fee Related
- 2011-01-05 CN CN201180005272.5A patent/CN102742023B/zh not_active Expired - Fee Related
- 2011-01-05 WO PCT/JP2011/050025 patent/WO2011083790A1/ja active Application Filing
- 2011-01-05 JP JP2011549004A patent/JP5590047B2/ja not_active Expired - Fee Related
- 2011-01-06 TW TW100100537A patent/TWI505478B/zh not_active IP Right Cessation
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JP2009045888A (ja) * | 2007-08-22 | 2009-03-05 | Teijin Dupont Films Japan Ltd | 太陽電池裏面保護膜用フィルム |
JP2009188391A (ja) * | 2008-01-09 | 2009-08-20 | Arata Yokoyama | 光起電力素子、その製造方法および光起電力素子を作製するための光起電力素子セット |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2013042101A (ja) * | 2011-07-19 | 2013-02-28 | Dainippon Printing Co Ltd | 太陽電池モジュール用の封止材シートの製造方法 |
JP2014174656A (ja) * | 2013-03-07 | 2014-09-22 | Dainippon Printing Co Ltd | タッチパネル用電極部材、タッチパネル、及び画像表示装置 |
WO2016157682A1 (ja) * | 2015-03-30 | 2016-10-06 | パナソニックIpマネジメント株式会社 | 太陽電池モジュール |
WO2016157696A1 (ja) * | 2015-03-31 | 2016-10-06 | パナソニックIpマネジメント株式会社 | 太陽電池モジュール |
JPWO2016157696A1 (ja) * | 2015-03-31 | 2018-01-25 | パナソニックIpマネジメント株式会社 | 太陽電池モジュール |
JP2018142747A (ja) * | 2015-03-31 | 2018-09-13 | パナソニックIpマネジメント株式会社 | 太陽電池モジュール |
Also Published As
Publication number | Publication date |
---|---|
TWI505478B (zh) | 2015-10-21 |
KR20120101497A (ko) | 2012-09-13 |
US20120305058A1 (en) | 2012-12-06 |
KR101445462B1 (ko) | 2014-09-29 |
JP5590047B2 (ja) | 2014-09-17 |
JPWO2011083790A1 (ja) | 2013-05-13 |
CN102742023A (zh) | 2012-10-17 |
TW201138122A (en) | 2011-11-01 |
US9006561B2 (en) | 2015-04-14 |
CN102742023B (zh) | 2015-05-13 |
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