WO2011013814A2 - 太陽電池モジュール - Google Patents
太陽電池モジュール Download PDFInfo
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- WO2011013814A2 WO2011013814A2 PCT/JP2010/062929 JP2010062929W WO2011013814A2 WO 2011013814 A2 WO2011013814 A2 WO 2011013814A2 JP 2010062929 W JP2010062929 W JP 2010062929W WO 2011013814 A2 WO2011013814 A2 WO 2011013814A2
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- electrode
- solar cell
- tab
- finger
- cell module
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/20—Electrodes
- H10F77/206—Electrodes for devices having potential barriers
- H10F77/211—Electrodes for devices having potential barriers for photovoltaic cells
- H10F77/215—Geometries of grid contacts
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
- H10F19/902—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/20—Electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/20—Electrodes
- H10F77/206—Electrodes for devices having potential barriers
- H10F77/211—Electrodes for devices having potential barriers for photovoltaic cells
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/93—Interconnections
- H10F77/933—Interconnections for devices having potential barriers
- H10F77/935—Interconnections for devices having potential barriers for photovoltaic devices or modules
- H10F77/937—Busbar structures for modules
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/93—Interconnections
- H10F77/933—Interconnections for devices having potential barriers
- H10F77/935—Interconnections for devices having potential barriers for photovoltaic devices or modules
- H10F77/939—Output lead wires or elements
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
- H10F19/902—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells
- H10F19/908—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells for back-contact photovoltaic cells
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/20—Electrodes
- H10F77/206—Electrodes for devices having potential barriers
- H10F77/211—Electrodes for devices having potential barriers for photovoltaic cells
- H10F77/219—Arrangements for electrodes of back-contact photovoltaic cells
-
- 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, and relates to a solar cell module including a plurality of solar cells connected to each other by connecting electrodes formed on the surface of the solar cell with a wiring material.
- the solar cell module has a structure in which a plurality of solar cells are electrically connected in series and / or in parallel by a wiring material electrically connected to electrodes on the surface.
- solder is used for the connection between the electrode of the solar cell and the wiring member when the solar cell module is manufactured. Solder is widely used because it is excellent in connection reliability such as conductivity and fixing strength, is inexpensive and versatile.
- Wiring connection using a resin adhesive is performed by placing the resin adhesive between the electrode of the solar cell and the wiring material, and heating the solar cell and the wiring material while relatively pressing the wiring material. It is connected to the electrode of the solar cell.
- the wiring material and the solar cell are relatively pressurized and connected. Part of the pressure at this time is transmitted to the solar cell through the electrode.
- a shear stress may be applied to the substrate of the solar cell, resulting in cracks in the substrate and a decrease in yield. There is a problem of doing. In particular, as the solar cell becomes thinner, it becomes important to deal with shear stress.
- the applicant of the present invention has a plurality of first finger electrodes disposed on the light receiving surface and connected to the wiring material, and a plurality of second finger electrodes disposed on the back surface and connected to the wiring material.
- the solar cell module which has a finger electrode and has arrange
- Patent Document 2 it is ideal that the finger electrode 110 disposed on the light receiving surface side of the solar cell 1 and the finger electrode 120 disposed on the back surface side coincide with each other as shown in FIG. .
- a resin adhesive is disposed between the wiring material 20 and each finger electrode in a state in which the positions of the finger electrodes 110 on the front and back sides coincide with each other, and the wiring material 20 is connected to the solar cell 1 as indicated by arrows in the figure. Pressurize in the direction of.
- the resin adhesive is not shown.
- An object of the present invention is to provide a solar cell module that has been made in view of the above-described conventional circumstances and can improve the yield.
- the present invention is a solar cell module comprising a plurality of solar cells connected to each other by a wiring material, wherein the solar cells are disposed on a light receiving surface and are connected to the wiring material by a plurality of surface side fingers.
- An electrode and a plurality of back surface side finger electrodes disposed on the back surface and connected to the wiring material, and the wiring material is connected to at least one finger electrode of the front surface side finger electrode and the back surface side finger electrode
- An auxiliary electrode portion for covering a region wider than the other finger electrode is provided in a region that is formed and is opposed to the other finger electrode.
- FIG. 2 is a cross-sectional view taken along line AA ′ of FIG. 1.
- FIG. 2 is a schematic cross-sectional view in which a main part of a cross section along line A-A ′ of FIG. It is a top view which shows a solar cell, (a) is the light-receiving surface (front surface) side, (b) is seen from the back surface side.
- It is a schematic plan view which shows the principal part of the solar cell which concerns on 1st Embodiment of this invention.
- It is a schematic sectional drawing of the solar cell module of this invention. It is a schematic diagram which shows the connection process of the tab of the solar cell module of this invention.
- FIG. 1 is a plan view of a solar cell in a solar cell module according to a first embodiment of the present invention
- FIG. 2 is a cross-sectional view taken along the line AA ′ in FIG. 1
- FIG. 4 is a plan view showing a solar cell, where (a) is a view from the light receiving surface side and (b) is a view from the back surface side.
- FIG. 5 is a schematic plan view showing the main part of the solar cell.
- the solar cell module includes a plurality of plate-like solar cells 1.
- the solar cell 1 is made of a crystalline semiconductor composed of single crystal silicon or polycrystalline silicon having a thickness of about 0.15 mm, for example, and has a substantially square shape with a side of 125 mm. It is not limited, and other solar cells may be used.
- an n-type region and a p-type region are formed, and a semiconductor junction for forming an electric field for carrier separation at an interface portion between the n-type region and the p-type region is formed. .
- the solar cell 1 includes a surface electrode 11 on the light receiving surface.
- the surface electrode 11 includes a plurality of finger electrodes 110 formed in parallel to each other. For example, about 55 finger electrodes 110 are formed with a finger electrode width of about 100 ⁇ m and a pitch of about 2 mm.
- the solar cell 1 includes a back electrode 12 on the back surface.
- the back surface electrode 12 includes a plurality of finger electrodes 120 formed in parallel to each other. For example, about 217 finger electrodes 120 with a finger electrode width of about 100 ⁇ m and a pitch of about 0.5 mm are formed.
- Such front surface electrode 11 and back surface electrode 12 can be formed, for example, by screen printing a thermosetting or heat-baked silver paste. In addition, other methods such as vapor deposition, sputtering, or plating may be used.
- the tab 20 is pasted at the position indicated by the broken line in the drawing.
- the tab 20 is connected orthogonally to the finger electrodes 110 and 120.
- the width a of the tab 20 is about 1.2 mm. In this case, although depending on the apparatus, the accuracy error of the tab attachment position due to the mechanical accuracy is about 0.2 mm.
- the number of finger electrodes 110 of the front surface electrode 11 is smaller than the number of finger electrodes 120 of the back surface electrode 12.
- the thickness of the finger electrode 110 of the front electrode 11 is made larger than the thickness of the finger electrode 120 of the back electrode 12, the resistance of the front electrode 11 can be reduced, and further the solar cell characteristics can be improved.
- at least one of the finger electrodes 120b on the back surface side is arranged on the back surface at a position opposite to the finger electrodes 110 on the front surface.
- the front and back finger electrodes are arranged so that one front surface finger electrode 110 faces every four back surface finger electrodes 120.
- the electrode width of the finger electrode 120b on the back surface is such that the finger electrode 120b on the back surface electrode 12 exists on the back surface side of the surface electrode 11 opposite to the finger electrode 110. Is thickened. Specifically, the electrode width of the back-side finger electrode 120b at a position opposite to the front-side finger electrode 110 is about 200 ⁇ m, which is twice the electrode width of the front-side finger electrode 110. The finger electrode 120b having a thick electrode width forms an auxiliary electrode portion having a larger area than the electrode of the finger electrode 110.
- the finger electrode 120 on the back surface located in the area where the finger electrode 110 on the front surface does not exist is about 100 ⁇ m in this embodiment. That is, the finger electrode 120 on the back surface located in the region where the finger electrode 110 on the front surface does not exist is narrower than the width of the finger electrode 120 b on the back surface facing the finger electrode 110 on the front surface.
- the width of each finger electrode 120 on the back surface may be the same, but by doing this, the difference between the amount of silver used in the front electrode 11 and the amount of silver used in the back electrode 12 is reduced, Suppression of solar cell warpage due to differences in the amount of silver used is suppressed.
- a method for manufacturing a solar cell module using the above-described solar cell 1 will be described.
- a tab 20 as a wiring material is electrically connected to the front electrode 11 and the back electrode 12.
- a resin adhesive is used to connect the tab 20 to the front electrode 11 and the back electrode 12.
- a resin adhesive film 5 is used as the resin adhesive.
- the resin adhesive film for example, an anisotropic conductive adhesive film is used, but not limited to this, an anisotropic conductive adhesive paste may be used.
- the resin adhesive film 5 is disposed between the front electrode 11 and the back electrode 12 of the solar cell 1 and the tabs 20 and 20.
- the resin adhesive film 5 is preferably the same as or slightly narrower than the width of the tab 20 to be connected.
- the width of the resin adhesive film 5 is also set to 0.5 mm to 3 mm corresponding to the width of the tab 20.
- three tabs 20 having a width of 1.2 mm are used.
- the three resin adhesive films 5 having a width corresponding to the width of the tab 20 are disposed on the position where the tab 20 is bonded.
- the resin adhesive film 5 may be wider than the width of the tab 20 as long as it has translucency after curing.
- the tab 20 is composed of a copper thin plate 20a, and the surface of the tab may be coated with tin, solder, silver, or the like.
- a coating layer 20b plated with tin is provided.
- the coating layer 20b constitutes a soft conductor layer that is softer than the finger electrodes 110 and 120.
- the tab 20 is pressed against the resin adhesive film 5, heat treatment is performed while pressing, and the adhesive layer of the resin adhesive film 5 is thermally cured to connect the tab 20 to the front electrode 11 and the back electrode 12.
- the resin adhesive film 5 When the resin adhesive film 5 is an anisotropic conductive adhesive film, the resin adhesive film 5 includes at least an adhesive resin and conductive particles dispersed therein.
- the adhesive resin component is composed of a composition containing a thermosetting resin.
- a thermosetting resin For example, an epoxy resin, a phenoxy resin, an acrylic resin, a polyimide resin, a polyamide resin, a polycarbonate resin, a urethane resin, or the like can be used.
- thermosetting resins are used singly or in combination of two or more, and one or more thermosetting resins selected from the group consisting of epoxy resins, phenoxy resins and acrylic resins are preferable.
- the conductive particles include metal particles such as gold particles, silver particles, copper particles, and nickel particles, or conductive or insulating core particles such as gold plating particles, copper plating particles, and nickel plating particles. Conductive particles formed by coating with a conductive layer such as a layer are used. *
- one end side of the tab 20 is connected to the surface electrode 11 of the predetermined solar cell 1, and the other
- the tabs 20 are arranged on the resin adhesive films 5 arranged on the front and back of the solar cell 1 so that the end side is connected to the back electrode 12 of another solar cell adjacent to the predetermined solar cell 1.
- the solar cell 1 placed on a hot plate is pressed using a heater block at a pressure of about 3 MPa, and the tab 20 is pressed against the solar cell 1 side through the resin adhesive film 5.
- the heater block and hot plate are heated at a temperature at which the resin adhesive component of the resin adhesive film 5 is thermally cured, for example, 120 ° C. or higher and 280 ° C. or lower, preferably 120 ° C. or higher and 200 ° C. or lower.
- the tab 20 is fixed by crimping, the tab 20 is fixed, and the solar cells 1 are electrically connected and arranged.
- an anisotropic conductive resin film is used as the resin adhesive film 5, but an insulating resin adhesive film that does not include conductive particles can also be used as the resin adhesive film 5.
- an insulating resin adhesive electrical connection is made by bringing a part of the surface of the front and back electrodes 11 and 12 into direct contact with the surface of the tab 20.
- the tab 20 is formed by forming a conductive film softer than the collector electrodes 11 and 12 such as tin (Sn) or solder on the surface of a conductor such as copper foil, and a part of the surface electrode 11 and the back electrode 12. It is preferable that the connection is made so as to be embedded in the conductive film.
- the surface electrode 11 is connected between the surface member 41 made of glass and the back surface member 42 made of a member such as a weather-resistant film or glass or plastic.
- the front member 41 side is placed on the front member 41 side and the back electrode 12 is placed on the back member 42 side, and are sandwiched and overlapped with a sealing material sheet having translucency such as EVA.
- the solar cell module shown in FIG. 6 is obtained by sealing the solar cell 1 with the sealing material 43 between the surface member 41 and the back surface member 42 with a laminating apparatus.
- the solar cell module is fitted into an outer frame made of aluminum or the like using a sealing material on the outer periphery as necessary.
- the outer frame is formed of aluminum, stainless steel, a steel plate roll forming material, or the like.
- a terminal box (not shown) is provided, for example, on the surface of the back member 42 as necessary.
- the finger electrode 120 on the back surface has the auxiliary electrode portion 120b having a wide electrode width in the region facing the front side finger electrode. For this reason, even if a mechanical error occurs, the auxiliary electrode portion 120b on the back surface side is located at the position opposite to the finger electrode 110 on the front surface side. As a result, the pressure applied at the time of pressure bonding can be received by the finger electrode 110 and the auxiliary electrode portion 120b, and the shear stress can be relaxed. Thereby, the malfunction of a solar cell module can be reduced by generation
- the line width of the finger electrode 120 on the back side that is not opposed to the finger electrode 110 on the front side is narrowed.
- the amount of silver used is not increased more than necessary, and an increase in cost can be prevented.
- the finger electrode with a narrow line width, the stress applied to the solar cell by the finger electrode 120 on the back surface side can be reduced, and the warpage of the solar cell can be reduced. As a result, the yield can be improved.
- FIG. 8 illustrates a modification of the first embodiment of the present invention.
- the back-side finger electrode 120 is formed to be wide as a whole in a region facing the front-side finger electrode 110.
- the back side finger electrode 120 of the solar cell 1 is wide only in the region facing the front side finger electrode 110 and the tab 20 being disposed.
- the auxiliary electrode portion 122 is formed to have a length that can cover an area slightly wider than the width of the tab 20 in consideration of mechanical errors when the tab is attached.
- the error of the tab attachment position due to the mechanical accuracy is assumed to be ⁇ 0.2 mm, and the interval of 1.6 mm (b in the figure) is taken into consideration for the mechanical accuracy.
- An auxiliary electrode portion 122 is provided.
- auxiliary electrode part 122 only in the part where the front and back finger electrodes 110 and 120 of the solar cell 1 face each other at the place where the tab 20 is arranged, even if a mechanical error occurs, the finger on the surface side is provided.
- the auxiliary electrode portion 122 of the finger electrode 120 on the back surface side is located at a position where the electrode 110 faces.
- the pressure applied at the time of pressure bonding can be received by the front and back finger electrodes 110 and the auxiliary electrode portion 122, and the shear stress can be reduced.
- the entire length of the electrode is not formed wide, the amount of silver used can be reduced when the electrode is formed of silver paste.
- the stress which a finger electrode gives to a solar cell can be made small, and the curvature of a solar cell can be reduced. As a result, the yield can be improved. Moreover, when light is received also on the back surface of the solar cell 1, the light shielding loss due to the back surface side finger electrode 120 can be reduced.
- FIG. 9 to 14 are schematic views showing modifications of the auxiliary electrode portion.
- the form shown in FIG. 9 is a region where the tab 20 is arranged, and a polygonal auxiliary electrode portion 123 is provided in a region facing the front side finger electrode 110 of the back surface side finger electrode 120 of the solar cell 1. .
- the length of the auxiliary electrode portion 123 is formed to the same length (b) as in FIG. 8 in consideration of the mechanical error of the tab.
- FIG. 10 The form shown in FIG. 10 is a region where the tab 20 is arranged, and a plurality of regions extending in a direction parallel to the longitudinal direction of the tab 20 in a region facing the front side finger electrode 110 of the back surface side finger electrode 120 of the solar cell 1.
- An auxiliary electrode portion 124 including an electrode wire portion 124a is provided.
- the length of the auxiliary electrode portion 124 as the length of the finger electrode 120 portion provided with the plurality of electrode wiring portions 124a is formed to the same length (b) as in FIG. 8 in consideration of the tab mechanical error. .
- a rectangular pulse-shaped auxiliary electrode portion 125 is provided in a region where the tab 20 is arranged and in a region facing the front side finger electrode 110 of the back side finger electrode 120 of the solar cell 1. is there.
- the length of the auxiliary electrode portion 125 is formed to the same length (b) as in FIG. 8 in consideration of the mechanical error of the tab.
- a spiral auxiliary electrode portion 126 is provided in a region where the tab 20 is arranged and in a region facing the front side finger electrode 110 of the back surface side finger electrode 120 of the solar cell 1. .
- the length of the auxiliary electrode portion 126 is formed to the same length (b) as in FIG. 8 in consideration of the mechanical error of the tab.
- FIG. 13 The form shown in FIG. 13 is an area where the tabs 20 are arranged, and is formed from a plurality of electrode line portions 127b extending in parallel with the finger electrodes in an area facing the front-side finger electrode 110 of the back-side finger electrode 120 of the solar cell 1.
- An auxiliary electrode portion 127 is provided.
- the length of the auxiliary electrode portion 127 is formed to the same length (b) as in FIG. 8 in consideration of the mechanical error of the tab.
- auxiliary electrode part 128 is provided in a region where the tab 20 is arranged and in a region facing the front side finger electrode 110 of the back side finger electrode 120 of the solar cell 1. is there.
- the length of the auxiliary electrode portion 128 is formed in the same length (b) as in FIG. 8 in consideration of the mechanical error of the tab.
- the finger electrode 120 on the back surface has an auxiliary electrode portion having a wide electrode width in the region facing the finger electrode 110 on the front surface side. .
- the auxiliary electrode part on the back surface side is located at the position opposite to the finger electrode 110 on the front surface side.
- FIG. 15 is a schematic plan view showing the main part of the solar cell of the present invention
- FIG. 16 is a schematic cross-sectional view in which the main part is enlarged.
- the finger electrode 11 on the light receiving surface side has the auxiliary electrode portion 112 at the place where the tab 20 is disposed. That is, the front-side finger electrode 110 has an auxiliary electrode portion in a region facing the back-side finger electrode 120 and in a region where the tab 20 is disposed.
- the auxiliary electrode portion 112 is formed in a region slightly wider than the width of the tab 20 in consideration of the tab mechanical error.
- the error of the tab attachment position due to the mechanical accuracy is assumed to be ⁇ 0.2 mm, and the interval of 1.6 mm (b in the figure) is taken into consideration for the mechanical accuracy.
- An auxiliary electrode portion 112 is provided.
- the front-side finger electrode 110 has an auxiliary electrode portion 112 only in a portion facing the finger electrode 120 on the back surface of the solar cell 1 in the region where the tab 20 is disposed, thereby causing a mechanical error. Even if this occurs, the auxiliary electrode portion 112 exists in a region facing the finger electrode 120 on the back surface side of the front finger electrode 110. As a result, the pressure applied at the time of pressure bonding can be received by the front and back finger electrodes 120 and the auxiliary electrode portion 112, and the shear stress can be reduced.
- the auxiliary electrode portion 112 does not hinder light incidence on the light receiving surface of the solar cell 1.
- the auxiliary electrode portion 112 is provided on the surface side where the number of finger electrodes is small, the volume difference between the front and back finger electrodes is reduced, the stress that the finger electrodes apply to the solar cell can be reduced, and the solar cell is warped. Can be reduced. As a result, the yield can be improved.
- FIGS. 17 to 22 are schematic views showing modifications of the auxiliary electrode portion formed on the surface side.
- a polygonal auxiliary electrode portion 113 is provided in a region where the tab 20 is disposed and in a region facing the front side finger electrode 110 of the back surface side finger electrode 120 of the solar cell 1.
- the length of the auxiliary electrode portion 113 is formed to the same length (b) as in FIG. 15 in consideration of the tab mechanical error.
- the form shown in FIG. 18 is a region where the tab 20 is arranged, and is composed of a plurality of electrode line portions 114 a parallel to the tab 20 in a region facing the front side finger electrode 110 of the back surface side finger electrode 120 of the solar cell 1.
- An auxiliary electrode portion 114 is provided.
- the length of the auxiliary electrode portion 114 as the length of the finger electrode 110 portion provided with the plurality of electrode wiring portions 114a is formed to the same length (b) as in FIG. 15 in consideration of the tab mechanical error. .
- a rectangular pulse-shaped auxiliary electrode portion 115 is provided in a region where the tab 20 is arranged and in a region facing the front side finger electrode 110 of the back side finger electrode 120 of the solar cell 1. is there.
- the length of the auxiliary electrode portion 115 is formed to the same length (b) as in FIG. 15 in consideration of the mechanical error of the tab.
- a spiral auxiliary electrode portion 116 is provided in a region where the tab 20 is arranged and in a region facing the front side finger electrode 110 of the back surface side finger electrode 120 of the solar cell 1. .
- the length of the auxiliary electrode portion 116 is formed to the same length (b) as in FIG. 15 in consideration of the tab mechanical error.
- FIG. 21 The form shown in FIG. 21 is a region where the tab 20 is arranged, and is formed of a plurality of electrode line portions 117b parallel to the finger electrodes in a region facing the front side finger electrode 110 of the back surface side finger electrode 120 of the solar cell 1.
- An auxiliary electrode portion 117 is provided.
- the length of the auxiliary electrode portion 117 is formed to the same length (b) as in FIG. 15 in consideration of the tab mechanical error.
- auxiliary electrode portion 118 is provided in a region where the tab 20 is arranged and in a region facing the front side finger electrode 110 of the back side finger electrode 120 of the solar cell 1. is there.
- the length of the auxiliary electrode portion 118 is formed to the same length (b) as in FIG. 15 in consideration of the tab mechanical error.
- the surface side finger electrode 110 provides an auxiliary electrode part only in the part facing the back surface side finger electrode 120 of the solar cell 1 in the area
- the auxiliary electrode portion exists in a region facing the back surface side finger electrode 120 of the front surface side finger electrode 110.
- FIG. 23 is a plan view showing a solar cell according to the third embodiment, where (a) is viewed from the light receiving surface side and (b) is viewed from the back surface side.
- FIG. 24 is a schematic plan view showing the main part of the solar cell.
- the surface electrode 11 is provided with a bus bar electrode 111 in accordance with the position where the tab is connected.
- the bus bar electrode 111 is electrically connected to all finger electrodes 110.
- the bent-bar-shaped bus bar electrodes 111 are arranged at an interval of 1.6 mm (b in the figure), which is slightly wider than the width of the tab 20.
- the bus bar electrode 111 is disposed within a range in consideration of the mechanical error of the tab 20 displayed by the one-dot chain line in FIG.
- the bus bar electrode 111 is formed in a polygonal line shape so as to bend in the left direction when reaching the right end, and in the tab attaching direction. In this embodiment, three bus bar electrodes 111 are provided.
- one broken line cycle is formed at intervals of five finger electrodes 110.
- the number of finger electrodes 110 of the front surface electrode 11 is made smaller than the number of finger electrodes 120 of the back surface electrode 12.
- a bus bar electrode 121 is provided on the back surface electrode 12.
- the bus bar electrode 121 is formed in a polygonal line shape like the bus bar electrode 111 on the surface.
- the bus bar electrode 121 is electrically connected to all finger electrodes 120.
- the bus bar electrode 111 of the front electrode 11 and the bus bar electrode 121 of the back electrode 12 are formed at positions where they overlap each other. That is, both the bus bar electrodes 111 and 121 are provided on the back side of the solar cell 1 where the front side bus bar electrode 111 exists so that the back side bus bar electrode 121 exists.
- the back side finger electrode 120 has an electrode which becomes the auxiliary electrode portion 120b having a wide electrode width in a region facing the front side finger electrode 110.
- the width of the finger electrode 120b at the portion where the back surface and the front surface coincide with each other is about 200 ⁇ m, which is twice as thick as the other finger electrodes 120.
- a tab 20 as a wiring material is electrically connected to the front electrode 11 and the back electrode 12.
- the resin adhesive film 5 is used.
- the resin adhesive film 5 is disposed between the front electrode 11 and the back electrode 12 of the solar cell 1 and the tabs 20 and 20.
- the resin adhesive film 5 to be bonded is preferably the same as or slightly narrower than the width of the tab 20 to be connected.
- three tabs 20 having a width of 1.2 mm are used.
- three conductive adhesive films 5 having a width corresponding to the width of the tab 20 are attached on the bus bar electrodes 111 and 121 of the solar cell 1 at a position where the tab 20 is bonded.
- the resin adhesive film 5 may be wider than the tab 20 as long as it has translucency even after curing.
- the tab 20 is formed of a copper thin plate, as in the first embodiment, and is provided with a coating layer plated with tin. This coating layer constitutes a soft conductor layer that is softer than the finger electrodes 110 and 120.
- the tab 20 is pressed against the resin adhesive film 5, heat treatment is performed while pressing, and the adhesive layer of the resin adhesive film 5 is thermally cured to connect the tab 20 to the front electrode 11 and the back electrode 12.
- one end side of the tab 20 is connected to the surface electrode 11 of the predetermined solar cell 1, and the other
- the tabs 20 are arranged on the resin adhesive films 5 arranged on the front and back of the solar cell 1 so that the end side is connected to the back electrode 12 of another solar cell adjacent to the predetermined solar cell 1.
- the solar cell 1 placed on a hot plate is pressed using a heater block at a pressure of about 3 MPa, and the tabs 20 are pressed against the solar cell 1 side via the resin adhesive film 5. .
- the temperature of the heater block and hot plate is heated at a high temperature at which the resin component is thermally cured, for example, 120 ° C. or higher and 280 ° C. or lower, preferably 120 ° C. or higher and 200 ° C. or lower.
- the tabs 20 are fixed and the solar cells 1 are electrically connected and arranged.
- part of the polygonal bus bar electrodes 111 and 121 is provided at a location where the tab 20 is connected.
- the bus bar electrodes 111 and 121 provide good electrical connection with the tab 20.
- the bus bar electrodes 111 and 121 and the tab 20 are connected, and the adhesive strength and electrical characteristics with the tab 20 are improved.
- the surface electrode 11 is connected between the surface member 41 made of glass and the back surface member 42 made of a member such as a weather-resistant film or glass or plastic.
- a sealing material 43 having translucency such as EVA with the surface member 41 side and the back electrode 12 on the back member 42 side.
- the solar cell module shown in FIG. 6 is obtained by sealing the solar cell 1 with the sealing material sheet 43 between the surface member 41 and the back surface member 42 with a laminating apparatus.
- the solar cell module is fitted into an outer frame made of aluminum or the like using a sealing material on the outer periphery as necessary.
- the outer frame is formed of aluminum, stainless steel, a steel plate roll forming material, or the like.
- a terminal box (not shown) is provided, for example, on the surface of the back member 42 as necessary.
- the back-side finger electrode 120 is in a region facing the front-side finger electrode 110 and the auxiliary electrode portion 120b on the back surface having a wide electrode width.
- FIG. 25 illustrates a modification of the third embodiment.
- the back-side finger electrode 120 is formed to be wide as a whole in a region facing the front-side finger electrode 110.
- the back side finger electrode 120 is an area facing the front side finger electrode 110 and an area where the tab 20 is arranged.
- a wide auxiliary electrode portion 122 is a length that can cover a region slightly wider than the tab 20 in consideration of the mechanical error of the tab, and is approximately the same as the width (b) formed by bending the bus bar electrode 121. It is formed in the length.
- the auxiliary electrode portion 122 only in the region where the tabs 20 are arranged in the regions where the front and back finger electrodes 110 and 120 of the solar cell 1 are opposed to each other, even if a mechanical error occurs, the surface side fingers
- the auxiliary electrode portion 122 of the finger electrode 120 on the back surface side is located at a position where the electrode 110 faces.
- the pressure applied at the time of pressure bonding can be received by the front and back finger electrodes 110 and the auxiliary electrode portion 122, and the pressure is canceled by the front and back sides, and the shear stress can be relaxed.
- the entire length of the electrode is not formed wide, the amount of silver used can be reduced when the electrode is formed of silver paste.
- the stress which a finger electrode gives to a solar cell can be made small and the curvature of a solar cell can be reduced, a yield can be improved.
- the auxiliary electrode portion 122 is not limited to the one shown in FIG. 25, and the structure shown in FIGS. 9 to 14 can be similarly applied.
- FIG. 26 is a plan view showing a solar cell according to the fourth embodiment, where (a) is seen from the light-receiving surface side and (b) is seen from the back surface side.
- FIG. 27 is a schematic plan view showing the main part of the solar cell.
- the bus bar electrodes 111 and 121 are provided, and the auxiliary electrode is provided at the place where the tab 20 of the finger electrode 110 on the surface side is disposed. A portion 112 is provided.
- the surface electrode 11 is provided with a bus bar electrode 111 in accordance with the position where the tab is connected. As described above, when the width a of the tab 20 is 1.2 mm, the sum of the error of the tab attachment position and the error of the bus bar electrode position accuracy due to the mechanical accuracy is ⁇ 0.2 mm, and the mechanical accuracy is taken into consideration.
- the bus bar electrodes 111 having a width equal to or larger than the finger electrodes 110 and having the same thickness as the finger electrodes 110 are arranged at intervals of 1.6 mm (b in the figure).
- the bus bar electrode 111 is arranged within a range (b in the figure) in consideration of the mechanical error of the tab 20 indicated by the one-dot chain line in FIG.
- the bus bar electrode 111 is formed in a polygonal line shape so as to bend in the left direction when reaching the right end, and in the tab attaching direction. In this embodiment, three bus bar electrodes 111 are provided.
- the front-side finger electrode 110 has an auxiliary electrode portion 112 in a region where the tab 20 is disposed. The five finger electrodes 110 form one broken line period.
- the bus bar electrode 121 is also provided on the back electrode 12 in accordance with the position where the tab is connected. As described above, when the width a of the tab 20 is 1.2 mm, the sum of the error of the tab attachment position and the error of the bus bar electrode position accuracy due to the mechanical accuracy is ⁇ 0.2 mm, and the mechanical accuracy is taken into consideration.
- the bus bar electrodes 120 having a width equal to or larger than the finger electrodes 120 and having the same thickness as the finger electrodes 120 are arranged at intervals of 1.6 mm (b in the drawing).
- the bus bar electrode 121 is disposed within a range (b in the figure) in consideration of the mechanical error of the tab 20 indicated by the one-dot chain line in FIG.
- the bus bar electrode 111 is formed in a polygonal line shape so as to bend in the left direction when reaching the right end, and in the tab attaching direction.
- three bus bar electrodes 121 are provided.
- the bus bar electrode 111 of the front electrode 11 and the bus bar electrode 121 of the back electrode 12 are formed at positions where they overlap each other. That is, both the bus bar electrodes 111 and 121 are provided on the back side of the solar cell 1 where the front side bus bar electrode 111 exists so that the back side bus bar electrode 121 exists.
- the number of finger electrodes 120 of the back surface electrode 12 is made larger than the number of finger electrodes 110 of the front surface electrode 11.
- the front side finger electrode 110 has an auxiliary electrode portion 112 only in a region facing the finger electrode 120 on the back side and where the tab 20 is disposed. Even if a mechanical error occurs, the auxiliary electrode portion 112 of the finger electrode 110 on the front surface side is located at the position opposite to the finger electrode 120 on the rear surface side. As a result, the present embodiment has the same effect as the above-described embodiment.
- the polygonal bus bar electrodes 111 and 121 are provided at locations where the tabs 20 are connected.
- the bus bar electrodes 111 and 121 provide good electrical connection with the tab 20.
- the bus bar electrodes 111 and 121 and the tab 20 are bonded, and the adhesive strength and electrical characteristics with the tab 20 are improved.
- the auxiliary electrode portion 112 is not limited to the one shown in FIG. 27, and the structure shown in FIGS. 17 to 22 can be similarly applied.
- the portion of the adhesive connecting the tab 20, the auxiliary electrode portion 112, and the finger electrode 120 is reduced.
- the portion where the auxiliary electrode portion 112 of the finger electrode 110 on the surface side and the tab 20 are connected is bonded with resin in order to press the tab 20 in a heated state.
- the agent is formed in a fillet shape at the end where the tab 20 and the auxiliary electrode portion 112 are connected so as to extend from the surface of the tab 20 to the side surface of the auxiliary electrode portion 112, and is connected by this fillet-like adhesive layer 51. It will be. For this reason, the connection strength between the finger electrode 110 on the surface side and the tab 20 is mainly held by the fillet-like adhesive layer 51, and the adhesive strength is maintained even if the resin adhesive 5 becomes thin.
- the finger electrode 120 on the back side is also connected to the tab 20 with a fillet-like adhesive layer.
- the number of finger electrodes 120 on the back side is larger than that on the front side, so As a result, the adhesive strength increases.
- the solar cell 1 other than both end portions is formed by the auxiliary electrode portion 114 including a plurality of electrode line portions 114a parallel to the tab 20, and the both end portions have a wide line width and an area.
- a large auxiliary electrode portion 119 is provided.
- fillet-like adhesive layers 51 are formed on both sides of the electrode wire portions 114a as shown in FIG.
- the finger electrodes 110 and the tabs 20 are connected by the fillet-like adhesive layers 51 provided in the plurality of electrode wire portions 114a.
- the amount of the fillet-like adhesive layer 51 connected to the tab 20 increases, and the adhesive strength between the tab 20 and the surface-side electrode 11 can be increased.
- the finger electrodes 110 other than both ends of the solar cell 1 have other finger electrodes 110 on both sides, the stress at the time of connecting the tab 20 is dispersed.
- the finger electrodes 110 at both ends have no electrodes outside thereof. For this reason, stress is concentrated when the tab 20 is connected. Therefore, in this example, an auxiliary electrode portion 119 having a large area is provided at a position located below the tabs at both ends, and the stress at the time of connection is dispersed.
- the bus bar electrodes 111 and 121 in this embodiment are formed in a polygonal line shape.
- the positions where the bus bar electrodes 111 and 121 are provided are formed so as to bend obliquely from the center position to the end considering the mechanical error.
- the bus bar electrode 111 has a position where the finger electrode 110 is provided, such as a position where it intersects with both ends of the arrangement position (b in the drawing) of the tab 20 in consideration of a mechanical error of the finger electrode 110 and a position where it intersects at the center.
- the position of the bus bar electrode 111 is different.
- the finger electrode 110 1 is positioned on the edge of the solar cell 1, a finger electrode finger electrodes 110 6 finger electrodes 110 2 are provided sequentially from the inside it.
- the bus bar electrode 111 from the point at the bottom in the figure extends obliquely upper right direction indicated by a chain line finger electrodes 110 1 considering mechanical error of tabs, one next to the finger electrodes 110 and second central split in crossed, further finger electrodes 110 3 of the next reaches the figure uppermost position indicated by a chain line, where bending bent to extend obliquely lower right direction. Then, it intersects the finger electrodes 110 4 central split the position formed next to it, further finger electrode 110 5 the adjacent reaches the drawing position of the bottom shown by the one-dot chain line where bending bent upper right Extend in the direction.
- the finger electrodes 110 3 and 110 5 at the positions where the bus bar electrode 111 is bent are opposite to the ends of the tabs 20 on the opposite side where the bus bar electrodes 111 are not arranged. Stress will be biased. That is, the portion of bus bar electrode 111, but the bus bar electrode 111 on the left and right finger electrodes 110 3 are arranged, portions having no bus bar electrode 111 becomes only the finger electrodes 110 3, located below the tab 20 electrodes The areas of the regions constituting the are greatly different.
- the electrode area of the finger electrode 110 located under the tab 20 is averaged by changing the length of the electrode line portion 114 constituting the auxiliary electrode portion 114 according to the position of the bus bar electrode 111. It is something to be made.
- the two electrode line portions 114 a close to the bus bar electrode 111 are configured as wide electrode line portions 114 a that are twice as wide as the finger electrodes 110.
- the two outer electrode wire portions 114b corresponding to the end side of the tab 20 are configured to be longer than the electrode wire portion 114a. What is necessary is just to comprise the electrode wire part 114b in the width
- the finger electrodes 110 2 and 110 4 where the bus bar electrode 111 intersects at the center portion all constitute the auxiliary electrode portion 114 with the electrode wire portion 114a having the same length.
- the bus bar electrode 111, the auxiliary electrode portion 114, and the tab 20 can be reliably connected, and sufficient adhesive strength can be obtained.
- the auxiliary electrode portion of this embodiment is as follows. preferable.
- fillet-like adhesive layers 51 are formed on both sides of the electrode wire portions 114a as shown in FIG.
- the finger electrodes 110 and the tabs 20 are connected by the fillet-like adhesive layers 51 provided in the plurality of electrode wire portions 114a.
- the amount of the fillet-like adhesive layer 51 connected to the tab 20 increases, and the adhesive strength between the tab 20 and the surface-side electrode 11 can be increased.
- the finger electrodes 110 other than both ends of the solar cell 1 have other finger electrodes 110 on both sides, the stress at the time of connecting the tab 20 is dispersed.
- the finger electrodes 110 at both ends have no electrodes outside thereof. For this reason, stress is concentrated when the tab 20 is connected. Therefore, in this example, the auxiliary electrode part 119b having a large area is provided at a position located below the tabs at both ends so as to disperse the stress at the time of connection.
- the finger electrode 120 on the back side is also connected to the tab 20 with a fillet-like adhesive layer.
- the number of finger electrodes 120 on the back side is larger than that on the front side, so As a result, the adhesive strength increases.
- the length of the electrode line part of the auxiliary electrode part 114 provided in the finger electrodes 110 3 and 110 5 is changed.
- the two electrode line portions 114 a close to the bus bar electrode 111 are configured as electrode line portions 114 a having a width about twice that of the finger electrode 110, and the two outer electrode lines corresponding to the end side of the tab 20 are formed.
- the electrode wire portion 114b is configured to be longer than the electrode wire portion 114a.
- the length of the electrode wiring portion of the auxiliary electrode portion 114 is not limited to this, and as shown in FIG. 34, the length of the electrode wiring portion may be sequentially increased as the distance from the polygonal bus bar electrode 111 increases. .
- the electrode wire portion of the auxiliary electrode portion 114 provided on the finger electrodes 110 3 and 110 5 is configured by electrode wiring portions 114b 1 , 114b 2 , 114b 3 , and 114b 4 that gradually become longer from the electrode wire portion 114a that contacts the bus bar electrode 111. is doing.
- the auxiliary electrode part 119 having a large area is provided at a position located below the tabs at both ends, and the stress at the time of connection is distributed.
- the total area only needs to be large.
- the number of the areas is not limited to one island, and a plurality of parallel areas with the tabs 20 are provided as shown in FIGS. If the electrode wiring part 119a is provided and the total area of the plurality of electrode parts is set to a predetermined size, a desired effect can be obtained.
- a wide electrode wiring portion is used.
- the electrode wiring portion 119c is formed long to ensure a predetermined area.
- a fillet-like adhesion layer will be formed in the both sides of these electrode wiring parts, and adhesive strength will increase.
- the tab 20 is formed by forming a conductive film softer than the surface electrodes 11 and 12 such as tin (Sn) or solder on the surface of a conductor such as a copper foil plate.
- a part of the back electrode 12 is connected so as to be embedded in the conductive film, the tab 20 is not limited thereto.
- the surface of a conductor 20a such as a copper foil plate coated with silver 20b 1 or 20b 2 can be used.
- the tab 20 is configured such that the surface 20b 2 has a fine uneven shape and scatters light.
- the silver-coated tab 20 is formed to be more rigid than the surface electrodes 11 and 12.
- the surface electrodes 11, 12 are not inserted into the tab 20, and conversely, the surfaces of the surface electrodes 11, 12 are deformed and brought into close contact, but even in such a configuration, the auxiliary electrode portion 112 of the finger electrode 110 is also attached. and are connected by a fillet-like adhesive layer 51 between the coating surface 20b 1 of the tab 20, it is possible to obtain a predetermined connection strength.
- the gap between the fillet-like adhesive layer 51 plays a role of a buffer layer, and the solar cell module It can be expected that peeling of the tab 20 and the like is suppressed by repeated thermal expansion and thermal contraction that occur during use.
- the resin adhesive tape is used to provide the adhesive layer 51 that connects the tab 20 and the electrodes 11 and 12.
- the tab 20 and the electrode 11 are formed using a resin paste such as an anisotropic conductive resin paste. , 12 can also be provided.
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Abstract
Description
される位置に合わせてバスバー電極111が設けられている。上述したように、タブ20の幅aが1.2mmの場合、機械精度によるタブの貼り付け位置の誤差とバスバー電極の位置精度誤差の合計が±0.2mmとして、その機械精度を考慮して、1.6mmの間隔(図中b)に、折れ線状にフィンガー電極110以上の幅でフィンガー電極110と同程度の厚みのバスバー電極111が配置されるように形成されている。図26の1点鎖線で表示されているタブ20の機械的誤差を考慮した範囲内(図中b)に、バスバー電極111が配置される。即ち、中心位置から図中左方向に斜めに延び0.8mm左側に達した点から右方向に斜めに折れ曲がって左端から右端まで1.6mmの位置まで延びる。そして、右端まで達すると左方向に折れ曲がるようにして折れ線状に、タブの貼り付け方向にバスバー電極111が形成されている。この実施形態では、3本のバスバー電極111が設けられている。表面側のフィンガー電極110は、タブ20が配置される領域に、補助電極部112を有する。また、5本のフィンガー電極110で1つの折れ線の周期が形成されている。
110 フィンガー電極
111 バスバー電極
120 フィンガー電極
121 バスバー電極
120b フィンガー電極
5 樹脂接着フィルム
20 タブ
Claims (16)
- 配線材によって互いに接続された複数の太陽電池を有する太陽電池モジュールにであって、
前記太陽電池は、受光面に配設され、前記配線材と接続される複数の表面側フィンガー電極と、裏面に配設され、前記配線材と接続される複数の裏面側フィンガー電極とを有し、
前記表面側フィンガー電極と裏面側フィンガー電極の少なくとも一方のフィンガー電極は、前記配線材が接続される領域であって他方のフィンガー電極と相対する領域に、他方のフィンガー電極が配設された領域より広い領域をカバーするための補助電極部を有することを特徴とする太陽電池モジュール。 - 前記配線材は、前記太陽電池の受光面又は裏面に樹脂接着剤によって接続されていることを特徴とする請求項1記載の太陽電池モジュール。
- 前記裏面側フィンガー電極の本数は前記表面側フィンガー電極の本数より多く形成されていることを特徴とする請求項1に記載の太陽電池モジュール。
- 前記太陽電池の受光面又は裏面の少なくとも一方に、タブが接続される位置に合わせてバスバー電極が設けられていることを特徴とする請求項1に記載の太陽電池モジュール。
- 前記バスバー電極は、折れ線状の形状を有することを特徴とする請求項4に記載の太陽電池モジュール。
- 前記補助電極部は、少なくとも配線材が接続される領域において表面側のフィンガー電極より広い幅の領域に形成された裏面側のフィンガー電極を含むことを特徴とする請求項1に記載の太陽電池モジュール。
- 前記補助電極部は、前記配線材が配置される方向と平行に延びる複数の電極線部を有することを特徴とする請求項6に記載の太陽電池モジュール。
- 前記表面側のフィンガー電極より広い幅の領域に形成される裏面側フィンガー電極部分は、機械的誤差量分だけ大きく形成されていることを特徴とする請求項6に記載の太陽電池モジュール。
- 表面側フィンガー電極が存在しない領域の裏面側フィンガー電極が、表面側のフィンガー電極と相対する裏面側フィンガー電極より幅が細く形成されていることを特徴とする請求項6に記載の太陽電池モジュール。
- 前記太陽電池の端部に位置する前記補助電極部は、他の位置の補助電極部より面積が大きく形成されていることを特徴とする請求項6に記載の太陽電池モジュール。
- 前記補助電極部は、少なくとも配線材が接続される領域において裏面側のフィンガー電極より広い幅の領域に形成された表面側のフィンガー電極を含む特徴とする請求項1に記載の太陽電池モジュール。
- 前記補助電極部は、タブが配置される方向と平行に延びる複数の電極線部を有することを特徴とする請求項11に記載の太陽電池モジュール。
- 前記裏面側のフィンガー電極より広い幅の領域に形成される表面側フィンガー電極部分は、機械的誤差量分だけ大きく形成されていることを特徴とする請求項11に記載の太陽電池モジュール。
- 前記電極線部の長さは、前記バスバー電極とフィンガー電極とが交差する位置に対応して変化することを特徴とする請求項12に記載の太陽電池モジュール。
- 前記電極線部の長さは、前記バスバー電極より遠い位置の電極線部が長く形成されていることを特徴とする請求項14に記載の太陽電池モジュール。
- 前記太陽電池の端部に位置する前記補助電極部は、他の位置の補助電極部より面積が大きく形成されていることを特徴とする請求項11に記載の太陽電池モジュール。
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201080033883.6A CN102473755B (zh) | 2009-07-30 | 2010-07-30 | 太阳能电池组件 |
| BR112012002039A BR112012002039A2 (pt) | 2009-07-30 | 2010-07-30 | módulo de célula solar |
| MX2012001289A MX2012001289A (es) | 2009-07-30 | 2010-07-30 | Modulo de celda solar. |
| AU2010278095A AU2010278095A1 (en) | 2009-07-30 | 2010-07-30 | Solar cell module |
| EP10804560.0A EP2461367B1 (en) | 2009-07-30 | 2010-07-30 | Solar cell module |
| SG2012006318A SG178153A1 (en) | 2009-07-30 | 2010-07-30 | Solar cell module |
| US13/361,007 US9608138B2 (en) | 2009-07-30 | 2012-01-30 | Solar cell module |
| US15/428,032 US10224439B2 (en) | 2009-07-30 | 2017-02-08 | Solar cell module |
| US16/269,512 US10896984B2 (en) | 2009-07-30 | 2019-02-06 | Solar cell module |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009178320 | 2009-07-30 | ||
| JP2009-178320 | 2009-07-30 | ||
| JP2010124428A JP5602498B2 (ja) | 2009-07-30 | 2010-05-31 | 太陽電池モジュール |
| JP2010-124428 | 2010-05-31 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US13/361,007 Continuation-In-Part US9608138B2 (en) | 2009-07-30 | 2012-01-30 | Solar cell module |
| US13/361,007 Continuation US9608138B2 (en) | 2009-07-30 | 2012-01-30 | Solar cell module |
Publications (2)
| Publication Number | Publication Date |
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| WO2011013814A2 true WO2011013814A2 (ja) | 2011-02-03 |
| WO2011013814A3 WO2011013814A3 (ja) | 2011-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/JP2010/062929 Ceased WO2011013814A2 (ja) | 2009-07-30 | 2010-07-30 | 太陽電池モジュール |
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| Country | Link |
|---|---|
| US (3) | US9608138B2 (ja) |
| EP (1) | EP2461367B1 (ja) |
| JP (1) | JP5602498B2 (ja) |
| KR (1) | KR20120038985A (ja) |
| CN (1) | CN102473755B (ja) |
| AU (1) | AU2010278095A1 (ja) |
| BR (1) | BR112012002039A2 (ja) |
| MX (1) | MX2012001289A (ja) |
| SG (1) | SG178153A1 (ja) |
| TW (1) | TWI502752B (ja) |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011148839A1 (ja) * | 2010-05-28 | 2011-12-01 | 三洋電機株式会社 | 太陽電池モジュール及び太陽電池 |
| WO2012102122A1 (ja) * | 2011-01-28 | 2012-08-02 | 三洋電機株式会社 | 太陽電池及び太陽電池モジュール |
| US20120227784A1 (en) * | 2011-03-08 | 2012-09-13 | Hitachi Chemical Company, Ltd | Solar battery cell, solar battery module, method of making solar battery cell and method of making solar battery module |
| US20120305048A1 (en) * | 2011-05-31 | 2012-12-06 | Hitachi Chemical Company, Ltd. | Solar battery cell, solar battery module and method of making solar battery module |
| WO2013136433A1 (ja) * | 2012-03-13 | 2013-09-19 | 三洋電機株式会社 | 太陽電池 |
| WO2013136436A1 (ja) * | 2012-03-13 | 2013-09-19 | 三洋電機株式会社 | 太陽電池 |
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- 2010-07-28 TW TW099124863A patent/TWI502752B/zh not_active IP Right Cessation
- 2010-07-30 SG SG2012006318A patent/SG178153A1/en unknown
- 2010-07-30 WO PCT/JP2010/062929 patent/WO2011013814A2/ja not_active Ceased
- 2010-07-30 KR KR1020127002341A patent/KR20120038985A/ko not_active Withdrawn
- 2010-07-30 AU AU2010278095A patent/AU2010278095A1/en not_active Abandoned
- 2010-07-30 MX MX2012001289A patent/MX2012001289A/es not_active Application Discontinuation
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20120038985A (ko) | 2012-04-24 |
| AU2010278095A1 (en) | 2012-02-23 |
| US20120125396A1 (en) | 2012-05-24 |
| EP2461367B1 (en) | 2019-05-01 |
| MX2012001289A (es) | 2012-08-03 |
| US9608138B2 (en) | 2017-03-28 |
| US10224439B2 (en) | 2019-03-05 |
| WO2011013814A3 (ja) | 2011-04-14 |
| US10896984B2 (en) | 2021-01-19 |
| CN102473755B (zh) | 2015-06-03 |
| SG178153A1 (en) | 2012-03-29 |
| EP2461367A2 (en) | 2012-06-06 |
| US20190172959A1 (en) | 2019-06-06 |
| JP5602498B2 (ja) | 2014-10-08 |
| CN102473755A (zh) | 2012-05-23 |
| EP2461367A4 (en) | 2017-11-15 |
| TW201110360A (en) | 2011-03-16 |
| US20170148935A1 (en) | 2017-05-25 |
| JP2011049525A (ja) | 2011-03-10 |
| TWI502752B (zh) | 2015-10-01 |
| BR112012002039A2 (pt) | 2016-05-24 |
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