WO2017043518A1 - Procédé de fabrication de module de batterie solaire, module de batterie solaire, et procédé de connexion de cellules de batterie solaire - Google Patents

Procédé de fabrication de module de batterie solaire, module de batterie solaire, et procédé de connexion de cellules de batterie solaire Download PDF

Info

Publication number
WO2017043518A1
WO2017043518A1 PCT/JP2016/076272 JP2016076272W WO2017043518A1 WO 2017043518 A1 WO2017043518 A1 WO 2017043518A1 JP 2016076272 W JP2016076272 W JP 2016076272W WO 2017043518 A1 WO2017043518 A1 WO 2017043518A1
Authority
WO
WIPO (PCT)
Prior art keywords
type electrode
solar cell
resin
solar
solar battery
Prior art date
Application number
PCT/JP2016/076272
Other languages
English (en)
Japanese (ja)
Inventor
賢一郎 花村
貴啓 藤井
Original Assignee
デクセリアルズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2016173970A external-priority patent/JP2017055112A/ja
Application filed by デクセリアルズ株式会社 filed Critical デクセリアルズ株式会社
Publication of WO2017043518A1 publication Critical patent/WO2017043518A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • 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
    • 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 method for manufacturing a solar cell module, a solar cell module, and a connection of solar cells, in which back contact solar cells are connected to each other using a laminate including a conductive substrate and a conductive adhesive film.
  • This application is based on Japanese Patent Application No. 2015-176593 filed on September 8, 2015 in Japan and Japanese Application No. 2016-173970 filed on September 6, 2016 in Japan. And these applications are hereby incorporated by reference into the present application.
  • a so-called back contact type solar cell module in which a p-type electrode and an n-type electrode are provided on the back surface opposite to the light receiving surface (front surface) of the solar cell.
  • both a p-type electrode and an n-type electrode are provided on the back surface of the solar cell.
  • Patent Document 1 describes a method of connecting a wiring sheet having wiring for connecting electrodes of a back-contact type solar battery cell to the solar battery cell using solder or a conductive adhesive.
  • the technique described in Patent Document 1 increases the cost of the solar cell module because the wiring sheet is expensive.
  • a p-type electrode current collector of one solar battery cell and an n-type electrode current collector of another solar battery cell are arranged adjacent to each other.
  • the method of solder-connecting the p-type electrode current collector part of the solar battery cell and the n-type electrode current collector part of another solar battery cell with a tab wire is employed.
  • FIG. 12 is a bottom view showing an example of a conventional back contact solar cell module.
  • solar cell 100 p-type electrode 101 and n-type electrode 102 are alternately arranged on the back surface of solar cell 100, and a p-type electrode is continuous with one end of p-type electrode 101 along one side edge.
  • a current collector 103 is formed, and an n-type electrode current collector 104 that is continuous with each end of the n-type electrode 102 is formed along the other side edge.
  • several connection points 106 to the tab wire 105 are provided at positions facing each other.
  • Each solar battery cell 100 is arranged such that the p-type electrode current collector 103 and the n-type electrode current collector 104 are adjacent to each other, and the connection points 106 are solder-connected to each other by a thin tab wire 105. ing.
  • the present invention has been proposed in view of such conventional circumstances, and provides a method for manufacturing a solar cell module capable of suppressing warpage and cracking of solar cells.
  • the method for manufacturing a solar cell module according to the present invention includes a plurality of solar cells in which p-type electrodes and n-type electrodes are alternately provided on the back surface opposite to the light-receiving surface of the solar cells.
  • Each p-type electrode and one n-type electrode of the other solar cell on one side edge side and the other side edge side of one solar cell are arranged adjacent to each other, and A step of arranging each n-type electrode so that each p-type electrode of another solar battery cell is adjacent to each other, a p-type electrode of one solar battery cell, and another solar battery cell on the other side edge side.
  • a laminate including a conductive base material and a conductive adhesive film containing an adhesive and conductive particles is pasted so as to straddle the n-type electrode, and the n-type electrode of one solar battery cell and one A step of applying the laminate so as to straddle the p-type electrode of the other solar battery cell on the side edge portion side;
  • the method for manufacturing a solar cell module according to the present invention includes a plurality of solar cells in which p-type electrodes and n-type electrodes are alternately provided on the back surface opposite to the light-receiving surface of the solar cells.
  • Each p-type electrode and one n-type electrode of the other solar cell on one side edge side and the other side edge side of one solar cell are arranged adjacent to each other, and A step of arranging each n-type electrode so that each p-type electrode of another solar battery cell is adjacent to each other, a p-type electrode of one solar battery cell, and another solar battery cell on the other side edge side.
  • a laminate including a conductive base material and a conductive adhesive film containing an adhesive and conductive particles is pasted so as to straddle the n-type electrode, and the n-type electrode of one solar battery cell and one A step of applying the laminate so as to straddle the p-type electrode of the other solar battery cell on the side edge portion side;
  • the layer body is bonded to the p-type electrode and the n-type electrode at a temperature of 200 ° C.
  • a plurality of solar cells a sealing resin laminated on the light-receiving surface and the back surface of the solar cell, a surface cover disposed on the sealing resin on the light-receiving surface side of the solar cell, and a solar cell And laminating and pressing the back sheet disposed on the back side sealing resin at a temperature of less than 180 ° C.
  • the solar cell module according to the present invention is obtained by a method for manufacturing a solar cell module.
  • a plurality of solar cells in which p-type electrodes and n-type electrodes are alternately provided on the back surface opposite to the light-receiving surface of the solar cells,
  • Each p-type electrode and one n-type electrode of the other solar cell on one side edge side and the other side edge side of one solar cell are arranged adjacent to each other, and
  • a laminate including a conductive base material and a conductive adhesive film containing an adhesive and conductive particles is pasted so as to straddle the n-type electrode, and the n-type electrode of one solar battery cell and one A step of attaching the laminate so as to straddle the p-type electrode of the other solar battery cell on the side edge portion side, and the laminate , A step of pressure-bonding to the p-type electrode and the n-type electrode at a temperature of less than 180 ° C., a plurality of solar cells after pressure-bonding, a sealing resin laminated on the light-receiving surface and the back surface of the solar cells, and solar cells
  • the surface cover disposed on the sealing resin on the light-receiving surface side of the cell and the back sheet disposed on the sealing resin on the back surface side of the solar battery cell are laminated and pressure-bonded at a temperature of less than 180 ° C., p And a step of connecting the n-type electrode and the conductive substrate.
  • a laminate including a conductive substrate and a conductive adhesive film containing an adhesive and conductive particles is pressure-bonded at a temperature of 200 ° C. or less, and laminate-bonded at a temperature of less than 180 ° C. And the curvature and crack of a photovoltaic cell can be suppressed.
  • FIG. 1 is a diagram illustrating an example of a method for manufacturing a solar cell module, and is a bottom view illustrating a state in which solar cells are arranged in a predetermined arrangement.
  • FIG. 2A is a perspective view showing a light receiving surface side of the solar battery cell
  • FIG. 2B is a bottom view showing a surface opposite to the light receiving surface of the solar battery cell.
  • FIG. 3 is a diagram showing an example of a method for manufacturing a solar battery module, and is a bottom view showing a string in which a laminate is attached to a solar battery cell.
  • FIG. 4 is a cross-sectional view showing an example of a laminated body.
  • FIG. 5 is a cross-sectional view showing an example of the conductive adhesive film in the laminate.
  • FIG. 1 is a diagram illustrating an example of a method for manufacturing a solar cell module, and is a bottom view illustrating a state in which solar cells are arranged in a predetermined arrangement.
  • FIG. 2A is a
  • FIG. 6 is a diagram illustrating an example of a method for manufacturing a solar cell module, and is a cross-sectional view illustrating the solar cell module obtained in a laminating process.
  • FIG. 7 is a view showing another example of a method for manufacturing a solar battery module, and is a bottom view showing a string in which a laminate is attached to a solar battery cell.
  • FIG. 8 is an exploded perspective view showing an example of the solar cell module.
  • FIG. 9 is a bottom view showing a configuration in which four electrodes are formed on the surface opposite to the light receiving surface of the solar battery cell.
  • FIG. 10 is a bottom view showing a state in which solar cells are arranged in a predetermined arrangement.
  • FIG. 11 is a cross-sectional view showing a state in which the solar battery cell is warped.
  • FIG. 12 is a bottom view showing an example of a conventional back contact solar cell module.
  • FIG. 1 is a diagram illustrating an example of a method for manufacturing a solar cell module, and is a bottom view illustrating a state in which solar cells are arranged in a predetermined arrangement.
  • Each n-type electrode 4 of 2B is disposed adjacent to each other, and each n-type electrode 4 of one solar cell 2A and each p-type electrode 3 of other solar cells 2B, 2C are adjacent to each other. To place.
  • each p-type electrode 3 of one solar cell 2A and one end 4a of each n-type electrode 4 of another solar cell 2C are arranged adjacent to each other, and one solar cell 2A
  • the one end 4a of each n-type electrode 4 and the one end 3a of each p-type electrode 3 of another solar battery cell 2C are disposed adjacent to each other.
  • FIG. 2 (A) is a perspective view showing a light receiving surface side of the solar battery cell
  • FIG. 2 (B) is a bottom view showing a surface opposite to the light receiving surface of the solar battery cell.
  • the solar battery cell 2 has a photoelectric conversion element 6.
  • the photoelectric conversion element 6 for example, a single crystal silicon photoelectric conversion element or a polycrystalline photoelectric conversion element can be used.
  • the photoelectric conversion element 6 has no electrode formed on the surface to be the light receiving surface 6a.
  • FIG. 2B the photoelectric conversion element 6 is opposite to the light receiving surface 6a.
  • a p-type electrode 3 and an n-type electrode 4 having different polarities are formed on the back surface 6b.
  • line-shaped p-type electrodes 3 and n-type electrodes 4 extending between both side edges are alternately formed in the width direction at substantially equal intervals.
  • one end 3 a of the p-type electrode 3 and one end 4 a of the n-type electrode 4 are positioned substantially in a straight line along the one side edge 2 a side of the solar battery cell 2.
  • one end 3 b of the p-type electrode 3 and one end 4 b of the n-type electrode 4 are positioned on a substantially straight line along the other side edge 2 b side of the solar battery cell 2.
  • the p-type electrode 3 and the n-type electrode 4 can be formed by, for example, applying and baking a conductive paste such as silver paste on the back surface 6b of the photoelectric conversion element 6 in a predetermined pattern.
  • FIG. 3 is a diagram showing an example of a method for manufacturing a solar battery module, and is a bottom view showing a string in which a laminate is attached to a solar battery cell.
  • the manufacturing method of the solar cell module includes a plurality of solar cells 2, a p-type electrode 3 of one solar cell 2A and an n-type electrode of another solar cell 2B.
  • the laminate 9 including the conductive base material 7 and the conductive adhesive film 8 is pasted, and the n-type electrode 4 of one solar battery cell 2A and the p of another solar battery cell 2C.
  • the laminated body 9 is stuck so as to straddle the mold electrode 3.
  • FIG. 4 is a cross-sectional view showing an example of a laminated body.
  • the laminate 9 is formed by laminating a conductive base material 7 and a conductive adhesive film 8 serving as an adhesive layer.
  • the laminated body 9 is stuck so that the conductive adhesive film 8 side may straddle the p-type electrode 3 of one solar battery cell 2A and the n-type electrode 4 of another solar battery cell 2B.
  • the laminated body 9 is affixed so that the conductive adhesive film 8 side may straddle the n-type electrode 4 of one solar cell 2A and the p-type electrode 3 of another solar cell 2C.
  • the length of the laminated body 9 is a length that can be pasted so as to straddle the p-type electrode 3 of one solar battery cell 2A and the n-type electrode 4 of another solar battery cell 2B, or n of one solar battery cell 2A. Any length can be selected as long as it can be pasted so as to straddle the type electrode 4 and the p-type electrode 3 of another solar battery cell 2C. For example, as shown in FIG. 3, in a plurality of solar cells 2, a length that covers the entire surface of the p-type electrode 3 of one solar cell 2 ⁇ / b> A and the entire surface of the n-type electrode 4 of another solar cell 2 ⁇ / b> B. Can be
  • a metal conductive substrate can be used as the conductive substrate 7.
  • a copper foil can be used for the conductive substrate 7.
  • an electrolytic copper foil or a rolled copper foil can be used.
  • the electroconductive base material 7 may have a plating layer as needed.
  • the plating layer can be formed by performing, for example, gold plating, silver plating, tin plating, solder plating, or the like.
  • the thickness of the conductive substrate 7 can be appropriately selected according to the purpose of use, and can be, for example, 30 to 100 ⁇ m, or 20 to 40 ⁇ m.
  • the width of the conductive base material 7 can be appropriately selected within the range where it does not come into contact with the adjacent conductive base material 7 when the laminate 9 is affixed to the solar battery cell 2, and the p-type electrode 3 or the n-type electrode.
  • the width can be substantially the same as the width of 4, for example, 0.1 to 10 mm.
  • the length of the conductive substrate 7 can be the same as the length of the laminate 9 described above.
  • FIG. 5 is a cross-sectional view showing an example of the conductive adhesive film in the laminate.
  • the conductive adhesive film 8 has a film shape as shown in FIG. 5, for example, and contains a thermosetting binder resin 10 and conductive particles 11.
  • the binder resin 10 contains a film-forming resin, a curable resin, and a curing agent, and may further contain other components as necessary.
  • the film-forming resin is preferably a resin having an average molecular weight of 10,000 or more.
  • the average molecular weight of the film-forming resin is preferably about 10,000 to 80,000 from the viewpoint of film formability.
  • the film forming resin include phenoxy resin, unsaturated polyester resin, saturated polyester resin, urethane resin, butadiene resin, polyimide resin, polyamide resin, and polyolefin resin.
  • the film forming resin may be used alone or in combination of two or more.
  • the curable resin examples include an epoxy resin and an acrylate resin, and an epoxy resin is preferable.
  • epoxy resin a commercially available epoxy resin can be used, and a liquid epoxy resin having fluidity at room temperature is preferable.
  • epoxy resins include naphthalene type epoxy resins, biphenyl type epoxy resins, phenol novolac type epoxy resins, bisphenol type epoxy resins, stilbene type epoxy resins, triphenolmethane type epoxy resins, phenol aralkyl type epoxy resins, and naphthol.
  • Type epoxy resin, dicyclopentadiene type epoxy resin, triphenylmethane type epoxy resin, and the like can be used.
  • acrylate resin examples include methyl acrylate, ethyl acrylate, isopropyl acrylate, isobutyl acrylate, epoxy acrylate, ethylene glycol diacrylate, diethylene glycol diacrylate, trimethylolpropane triacrylate, dimethylol tricyclodecane diacrylate, and tetramethylene glycol tetraacrylate.
  • a curable resin may be used individually by 1 type, and may be used in combination of 2 or more type.
  • curing agent examples include imidazoles represented by 2-ethyl 4-methylimidazole; lauroyl peroxide, butyl peroxide, benzyl peroxide, dilauroyl peroxide, dibutyl peroxide, benzyl peroxide, peroxydicarbonate And organic peroxides such as benzoyl peroxide; anionic curing agents such as organic amines; and cationic curing agents such as sulfonium salts, onium salts, and aluminum chelating agents.
  • imidazoles represented by 2-ethyl 4-methylimidazole
  • lauroyl peroxide butyl peroxide
  • benzyl peroxide dilauroyl peroxide, dibutyl peroxide, benzyl peroxide, peroxydicarbonate
  • organic peroxides such as benzoyl peroxide
  • anionic curing agents such as organic amines
  • cationic curing agents such as sulf
  • the binder resin 10 includes at least one film-forming resin selected from phenoxy resin, unsaturated polyester resin, saturated polyester resin, urethane resin, butadiene resin, polyimide resin, polyamide resin, and polyolefin resin, and epoxy resin. It is preferable to contain at least one curing agent selected from imidazoles, anionic curing agents, and cationic curing agents.
  • silane coupling agents include, for example, silane coupling agents, fillers, softeners, accelerators, anti-aging agents, colorants (pigments, dyes), organic solvents, ion catchers, and the like.
  • the conductive particles 11 are, for example, metal particles such as nickel, gold, silver and copper, those obtained by applying gold plating to the resin particles, and those obtained by applying an insulating coating to the outermost layer of the particles obtained by applying gold plating to the resin particles. Etc. can be used.
  • the shape of the conductive particles 18 is preferably a spherical shape or a flat shape.
  • the average particle diameter of the conductive particles 11 is preferably 1 to 50 ⁇ m, and more preferably 1 to 10 ⁇ m.
  • the thickness of the conductive adhesive film 8 is preferably equal to or less than the thickness of the solar battery cell 2. Further, the thickness of the conductive adhesive film 8 is preferably equal to or less than the thickness of the conductive substrate 7. By setting it as such a structure, the curvature and crack of a photovoltaic cell can be suppressed more effectively.
  • the thickness of the conductive adhesive film 8 can be 15 to 25 ⁇ m.
  • the laminate 9 may have a release sheet on the surface opposite to the surface on which the conductive substrate 7 of the conductive adhesive film 8 is laminated.
  • the release sheet for example, PET (Poly Ethylene Terephthalate), OPP (Oriented Polypropylene), PMP (Poly-4-methylpentene-1), PTFE (Polytetrafluoroethylene) and the like can be used.
  • the laminate 9 is formed in a tape shape and is wound around a reel 12.
  • the laminated body 9 is pulled out from the reel 12 and cut into a predetermined length, and then the conductive adhesive film 8 is replaced with the n-type electrode 4 of one solar battery cell 2A and another solar battery cell. It is pasted so as to straddle the 2C p-type electrode 3.
  • the laminated body 9 affixes the electroconductive adhesive film 8 so that it may straddle the p-type electrode 3 of the one photovoltaic cell 2A, and the n-type electrode 4 of the other photovoltaic cell 2B. Thereby, the electroconductive base material 7, the p-type electrode 3, and the n-type electrode 4 can be connected.
  • release sheet and the conductive substrate 7 are formed to have substantially the same width as the widths of the p-type electrode 3 and the n-type electrode 4.
  • the laminate 9 can be obtained, for example, by the following manufacturing method. First, a film-forming resin, a liquid epoxy resin, a latent curing agent, a silane coupling agent, and conductive particles 11 are dissolved in a solvent to obtain a conductive adhesive film forming solution. As the solvent, toluene, ethyl acetate, a mixed solvent thereof or the like can be used. The obtained conductive adhesive film forming solution is applied onto a release sheet, and the solvent is volatilized to obtain a conductive adhesive film 8 with a release sheet. Next, the conductive adhesive film 8 with a release sheet is obtained by laminating the conductive adhesive film 8 on one surface of the conductive substrate 7 by roll lamination or the like, thereby obtaining a laminate 9.
  • a film-forming resin, a liquid epoxy resin, a latent curing agent, a silane coupling agent, and conductive particles 11 are dissolved in a solvent to obtain a conductive adhesive film forming solution.
  • the solvent tolu
  • the laminate 9 is crimped to the p-type electrode 3 and the n-type electrode 4 at a temperature lower than 180 ° C.
  • the pressure-bonding step is performed by applying heat and pressure from above the conductive base material 7 for a predetermined time at a temperature and pressure at which the conductive adhesive film 8 exhibits fluidity and does not cause main curing by a heat bonder, for example. preferable.
  • the heating temperature can be, for example, 100 ° C. or lower, and can be 70 to 80 ° C.
  • the heat pressing time can be, for example, 0.1 second to 10 minutes, or can be 0.1 second to 10 seconds.
  • the pressure in the pressure bonding step can be, for example, 1 MPa or less, and can be 0.01 to 0.5 MPa.
  • FIG. 6 is a diagram illustrating an example of a method for manufacturing a solar cell module, and is a cross-sectional view illustrating the solar cell module obtained in a laminating process.
  • the laminating step the plurality of solar cells 2 after the crimping step, the sealing resin 13 laminated on the light receiving surface 2c and the back surface 2d of the solar cells 2, and the sealing resin 13 on the light receiving surface 2c side are provided.
  • the surface cover 14 disposed and the back sheet 15 disposed on the sealing resin 13 on the back surface 2d side are laminated and pressure-bonded, and the p-type electrode 3 and the conductive base material 7 and the n-type electrode 4 and the conductive material are conductive.
  • the base material 7 is connected.
  • the heating temperature in the laminating step is less than 180 ° C. and can be 150 to 170 ° C.
  • the heat pressing time in the laminating step can be 1 second to 1 hour.
  • the pressure in the laminating step can be 0.01 to 1 MPa, and can also be 0.01 to 0.5 MPa.
  • the sealing resin 13 is, for example, ethylene / vinyl acetate copolymer (EVA), ethylene / vinyl acetate / triallyl isocyanurate (EVAT), polyvinyl butyrate (PVB), polyisobutylene (PIB), silicone resin, polyurethane. Resin or the like can be used.
  • EVA ethylene / vinyl acetate copolymer
  • EVAT ethylene / vinyl acetate / triallyl isocyanurate
  • PVB polyvinyl butyrate
  • PIB polyisobutylene
  • silicone resin polyurethane. Resin or the like can be used.
  • the surface cover 14 can be made of a light-transmitting material such as glass or plastic.
  • the backsheet 15 can be made of glass, polyethylene terephthalate, aluminum or the like.
  • the laminate 9 is thermally pressed from the conductive substrate 7 side by a laminator, so that the conductive adhesive film 8 is interposed between the conductive substrate 7 and the p-type electrode 3 and the n-type electrode 4.
  • the binder resin 10 constituting the spilled out.
  • the binder resin 10 is cured with the conductive particles 11 sandwiched between the conductive base material 7 and the p-type electrode 3 and between the conductive base material 7 and the n-type electrode 4.
  • the adhesive film 8 becomes the adhesive layer 16.
  • the conductive base material 7 and the p-type electrode 3, and the conductive base material 7 and the n-type electrode 4 are connected via the conductive particles 11 in the conductive adhesive film 8, and adjacent solar cells. 2 are connected in series.
  • the metal frames 17, such as aluminum, are attached to the circumference
  • a matrix in which a plurality of strings of solar cells are arranged in a laminating step can be laminated in a lump so that the manufacturing process can be further simplified.
  • the flux that has been used in the conventional soldering method becomes unnecessary, and therefore, the conductive base material that is likely to be generated due to the use of the flux and Separation of the interface with the sealing resin can be suppressed. Therefore, the reliability of the solar cell module can be further improved.
  • the amount of warpage of the solar battery cell is within a practically allowable range, and the solar cell is not cracked, and the crimping as in the manufacturing method according to the second embodiment to be described later is performed.
  • a process and a lamination process may be applied.
  • the laminated body 9 is pressure-bonded to the p-type electrode 3 and the n-type electrode 4 at a temperature of 200 ° C. or lower after the above-described arrangement process and pasting process.
  • the conditions for the placement step and the pasting step in the method for manufacturing the solar cell module according to the second embodiment are synonymous with the placement step and the pasting step in the method for manufacturing the solar cell module according to the first embodiment, and are preferable.
  • the range is the same.
  • the p-type electrode 3 and the conductive substrate 7 are heated from the conductive substrate 7 at a temperature and pressure at which the conductive adhesive film 8 is fully cured for a predetermined time. And the n-type electrode 4 and the conductive substrate 7 are connected.
  • the heating temperature in the crimping step is less than 200 ° C. and can be 190 ° C. or less.
  • the heat pressurizing time can be, for example, 0.1 second to 10 minutes.
  • the pressure in the heat pressurizing step can be set to 2 MPa or less, for example.
  • the conditions of the laminating step are synonymous with the laminating step in the method for manufacturing the solar cell module according to the first embodiment, and the preferred range is also the same.
  • the laminated body 9 extends over one end of the p-type electrode 3 of one solar battery cell 2 and one end of the n-type electrode 4 of another solar battery cell 2. May be pasted.
  • FIG. 7 is a view showing another example of a method for manufacturing a solar battery module, and is a bottom view showing a string in which a laminate is attached to a solar battery cell.
  • the attaching step as shown in FIG. 7, in a pair of adjacent solar cells 2, one end 3a of the p-type electrode 3 of one solar cell 2A and one end of the n-type electrode 4 of another solar cell 2C.
  • the laminate 9 is pasted so as to straddle 4a, and the one end 4b of the n-type electrode 4 of one solar cell 2A and the one end 3b of the p-type electrode 3 of another solar cell 2B are straddled. You may make it affix the laminated body 9.
  • FIG. 7 is a view showing another example of a method for manufacturing a solar battery module, and is a bottom view showing a string in which a laminate is attached to a solar battery cell.
  • FIG. 8 is an exploded perspective view showing an example of the solar cell module 1.
  • the solar cell module 1 includes a string in which a plurality of solar cells 2 are connected in series by a conductive base material 7 and a plurality of strings are arranged.
  • the solar cell module 1 includes a sealing resin 13 laminated on the light receiving surface side of the matrix and the back surface opposite to the light receiving surface, a surface cover 14 provided on the light receiving surface side, and a back surface of the matrix. Laminated together with the back sheet 15 formed.
  • the solar cell module 1 has a metal frame 17 attached around it.
  • the solar cell module according to the present embodiment is manufactured by the above-described manufacturing method, the load on the solar cell 2 is further reduced, and thus the warpage and cracking of the solar cell 2 can be suppressed.
  • the present invention will be described.
  • the amount of warpage of the solar battery cell after being pasted and pressure-bonded across the p-type electrode of one solar battery cell and the n-type electrode of another solar battery cell was confirmed.
  • the solar battery cell was laminated and pressure-bonded together with the EVA sheet, the cover glass and the back sheet, and the presence or absence of cracks in the solar battery cell after the laminate pressure-bonding was confirmed.
  • the present invention is not limited to the following examples.
  • Example 1 A 6-inch single crystal silicon cell was used as the solar battery cell. Specifically, as shown in FIG. 9, a solar battery cell 2 in which two linear p-type electrodes 3 and two n-type electrodes 4 were alternately formed on the back surface 6 b of the photoelectric conversion element 6 was used.
  • FIG. 10 is a bottom view showing a state in which solar cells are arranged in a predetermined arrangement.
  • three solar cells 2A, 2B, and 2C are prepared and arranged so that each p-type electrode of one solar cell 2A and each n-type electrode of the other solar cells 2B and 2C are adjacent to each other.
  • each n-type electrode of one solar battery cell 2A and each p-type electrode of other solar battery cells 2B and 2C are arranged adjacent to each other.
  • a copper foil (average thickness 35 ⁇ m, width 5 mm), adhesive and conductive particles are placed so as to straddle the p-type electrode of one solar battery cell 2A and the n-type electrode of another solar battery cell 2B.
  • a laminate (DT101, manufactured by Dexerials Co., Ltd.) laminated with the conductive adhesive film (average thickness 15 ⁇ m) contained was pasted.
  • the said laminated body was affixed so that it might straddle the n-type electrode of one photovoltaic cell 2A, and the p-type electrode of the other photovoltaic cell 2C.
  • the laminated body was temporarily pressure-bonded to the p-type electrode and the n-type electrode by heat-pressing with a heating bonder from the copper foil side of the laminated body.
  • Thermal pressurization was performed under conditions of 80 ° C., 0.3 MPa, and 5 seconds (pressure bonding condition A).
  • the tempered glass provided on the EVA sheet on the light receiving surface side of the solar battery cell, and the EVA sheet on the back surface side of the solar battery cell was laminated and pressure-bonded together by a laminator. Thereby, the p-type electrode and the copper foil, and the n-type electrode and the copper foil were connected. Lamination pressure bonding was performed under the conditions of 160 ° C., 0.1 MPa, and 15 minutes.
  • Example 2 As shown in FIGS. 2A and 2B, a solar battery cell 2 in which three p-type electrodes 3 and three n-type electrodes 4 are alternately provided on the back surface 6b of the photoelectric conversion element 6 is used. The same procedure as in Example 1 was performed except that it was used.
  • Example 3 As a laminate, a laminate (DT101, manufactured by Dexerials Co., Ltd.) in which a copper foil (average thickness 70 ⁇ m, width 5 mm) and a conductive adhesive film (average thickness 15 ⁇ m) containing an adhesive and conductive particles is laminated is used. The procedure was the same as in Example 1, except that
  • Example 4 As shown in FIGS. 2A and 2B, a solar battery cell 2 in which three p-type electrodes 3 and three n-type electrodes 4 are alternately provided on the back surface 6b of the photoelectric conversion element 6 is used. The same procedure as in Example 3 was performed except that it was used.
  • Example 5 As a laminate, a laminate (DT101, manufactured by Dexerials Co., Ltd.) in which a copper foil (average thickness 100 ⁇ m, width 5 mm) and a conductive adhesive film (average thickness 15 ⁇ m) containing an adhesive and conductive particles is laminated is used. The procedure was the same as in Example 1, except that
  • Example 6 As shown in FIGS. 2A and 2B, a solar battery cell 2 in which three p-type electrodes 3 and three n-type electrodes 4 are alternately provided on the back surface 6b of the photoelectric conversion element 6 is used. The same procedure as in Example 5 was performed except that it was used.
  • Example 7 In the same manner as in Example 1, the laminate was pasted so as to straddle the p-type electrode of one solar battery cell 2A and the n-type electrode of another solar battery cell 2B. The laminate was stuck so as to straddle the n-type electrode and the p-type electrode of the other solar battery cell 2C.
  • the electrically conductive substrate was connected to the p-type electrode and the n-type electrode by applying heat and pressure to the attached laminate body with a heating bonder. Thermal pressurization was performed under conditions of 180 ° C., 2 MPa, and 15 seconds (pressure bonding condition B).
  • the TPT back sheet provided on the laminate was laminated and pressure-bonded by a laminator. Lamination pressure bonding was performed under the conditions of 160 ° C., 0.1 MPa, and 15 minutes.
  • a laminate including a conductive base material and a conductive adhesive film containing an adhesive and conductive particles is pressure-bonded at a temperature of less than 180 ° C., and further laminated at a temperature of less than 180 ° C. Since it crimped
  • 1 solar cell module 1 solar cell module, 2 solar cell, 3 p-type electrode, 4 n-type electrode, 5 string, 6 photoelectric conversion element, 7 conductive substrate, 8 conductive adhesive film, 9 laminate, 10 binder resin, 11 conductive Particles, 12 reels, 13 sealing resin, 14 surface cover, 15 backsheet, 16 adhesive layer, 17 metal frame

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Photovoltaic Devices (AREA)

Abstract

Selon l'invention, un gauchissement ou une fissuration d'une cellule de batterie solaire sont supprimés. Un procédé de fabrication de module de batterie solaire comprend : une étape consistant à agencer une pluralité de cellules de batterie solaire (2), dans lesquelles des électrodes du type p 3 et des électrodes du type n 4 sont disposées en alternance sur une surface arrière (2d), de manière que les électrodes du type p 3 d'une cellule de batterie solaire (2A) soient adjacentes aux électrodes du type n 4 d'autres cellules de batterie solaire (2B, 2C), et que les électrodes du type n 4 de la cellule de batterie solaire (2A) soient adjacentes aux électrodes du type p 3 des autres cellules de batterie solaire (2B, 2C) ; une étape consistant à fixer un stratifié (9), comprenant un matériau de base électroconducteur (7) et un film adhésif électroconducteur (8), de manière à chevaucher les électrodes du type p 3 de la cellule de batterie solaire (2A) et les électrodes du type n 4 de l'autre cellule de batterie solaire (2B), et à fixer le stratifié (9) de manière à chevaucher les électrodes du type n 4 de la cellule de batterie solaire (2A) et les électrodes du type p 3 de l'autre cellule de batterie solaire (2C) ; une étape de collage par pression du stratifié (9) sur les électrodes du type p 3 et les électrodes du type n 4 à une température inférieure à 180 °C ; et une étape de collage par pression de la pluralité de cellules de batterie solaire (2) après le collage par pression du stratifié, d'une résine d'étanchéité (13), d'un couvercle de surface (14) et d'une feuille arrière (15) à une température inférieure à 180 °C, ce qui permet de connecter les électrodes du type p 3 et le matériau de base électroconducteur (7), et de connecter les électrodes du type n 4 et le matériau de base électroconducteur (7).
PCT/JP2016/076272 2015-09-08 2016-09-07 Procédé de fabrication de module de batterie solaire, module de batterie solaire, et procédé de connexion de cellules de batterie solaire WO2017043518A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2015-176593 2015-09-08
JP2015176593 2015-09-08
JP2016-173970 2016-09-06
JP2016173970A JP2017055112A (ja) 2015-09-08 2016-09-06 太陽電池モジュールの製造方法、太陽電池モジュール、及び太陽電池セルの接続方法

Publications (1)

Publication Number Publication Date
WO2017043518A1 true WO2017043518A1 (fr) 2017-03-16

Family

ID=58239790

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/076272 WO2017043518A1 (fr) 2015-09-08 2016-09-07 Procédé de fabrication de module de batterie solaire, module de batterie solaire, et procédé de connexion de cellules de batterie solaire

Country Status (1)

Country Link
WO (1) WO2017043518A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113314637A (zh) * 2021-05-28 2021-08-27 宁夏小牛自动化设备有限公司 一种单面焊接的密栅太阳能电池串的制备方法
JP7490878B1 (ja) 2023-08-09 2024-05-27 晶科能源股分有限公司 セルストリングの溶接方法とストリング溶接機
US12119420B2 (en) 2022-11-24 2024-10-15 Jinko Solar (Haining) Co., Ltd. Method for manufacturing photovoltaic module and photovoltaic module

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008078741A1 (fr) * 2006-12-26 2008-07-03 Kyocera Corporation Module à cellules solaires
JP2013179272A (ja) * 2012-02-08 2013-09-09 Hitachi Chemical Co Ltd 太陽電池モジュールの製造方法、及び樹脂組成物
JP2013258313A (ja) * 2012-06-13 2013-12-26 Hitachi Chemical Co Ltd 太陽電池モジュールの製造方法
JP2014017398A (ja) * 2012-07-10 2014-01-30 Dexerials Corp 太陽電池モジュール及びその製造方法
JP2014084395A (ja) * 2012-10-23 2014-05-12 Hitachi Chemical Co Ltd 導電性接着剤組成物、導電性接着剤付金属導線、接続体及び太陽電池モジュールとその製造方法
JP2015053342A (ja) * 2013-09-05 2015-03-19 デクセリアルズ株式会社 導電性接着剤、太陽電池モジュール、及び太陽電池モジュールの製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008078741A1 (fr) * 2006-12-26 2008-07-03 Kyocera Corporation Module à cellules solaires
JP2013179272A (ja) * 2012-02-08 2013-09-09 Hitachi Chemical Co Ltd 太陽電池モジュールの製造方法、及び樹脂組成物
JP2013258313A (ja) * 2012-06-13 2013-12-26 Hitachi Chemical Co Ltd 太陽電池モジュールの製造方法
JP2014017398A (ja) * 2012-07-10 2014-01-30 Dexerials Corp 太陽電池モジュール及びその製造方法
JP2014084395A (ja) * 2012-10-23 2014-05-12 Hitachi Chemical Co Ltd 導電性接着剤組成物、導電性接着剤付金属導線、接続体及び太陽電池モジュールとその製造方法
JP2015053342A (ja) * 2013-09-05 2015-03-19 デクセリアルズ株式会社 導電性接着剤、太陽電池モジュール、及び太陽電池モジュールの製造方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113314637A (zh) * 2021-05-28 2021-08-27 宁夏小牛自动化设备有限公司 一种单面焊接的密栅太阳能电池串的制备方法
US12119420B2 (en) 2022-11-24 2024-10-15 Jinko Solar (Haining) Co., Ltd. Method for manufacturing photovoltaic module and photovoltaic module
JP7490878B1 (ja) 2023-08-09 2024-05-27 晶科能源股分有限公司 セルストリングの溶接方法とストリング溶接機

Similar Documents

Publication Publication Date Title
JP6064177B2 (ja) 太陽電池モジュールの製造方法
JP5377019B2 (ja) 太陽電池モジュールの製造方法
TWI438916B (zh) 太陽電池模組之製造方法
WO2012033059A1 (fr) Procédé de fabrication d'un module accumulateur solaire, dispositif de connexion d'éléments accumulateurs solaires et module accumulateur solaire
JPWO2009060753A1 (ja) 太陽電池モジュールおよび太陽電池モジュールの製造方法
WO2012086590A1 (fr) Procédé de production d'un module de cellules solaires et module de cellules solaires
KR101441264B1 (ko) 태양전지 모듈, 태양전지 모듈의 제조 방법, 태양전지 셀 및 탭선의 접속 방법
WO2012005318A1 (fr) Module de cellule solaire et procédé de fabrication d'un module de cellule solaire
JP6110244B2 (ja) 導電性接着テープ及び導電性接着テープの接続方法、並びに太陽電池モジュール及びその製造方法
WO2017043518A1 (fr) Procédé de fabrication de module de batterie solaire, module de batterie solaire, et procédé de connexion de cellules de batterie solaire
JP5545569B2 (ja) 太陽電池用バックシートの製造方法
KR102099246B1 (ko) 결정계 태양 전지 모듈 및 그의 제조 방법
JP2014060278A (ja) ストリングのリペア方法、及び結晶系太陽電池モジュールの製造方法
WO2014010486A1 (fr) Module de cellules solaires et son procédé de fabrication
JP2017055112A (ja) 太陽電池モジュールの製造方法、太陽電池モジュール、及び太陽電池セルの接続方法
JP2011222744A (ja) 太陽電池接続用タブ線、接続方法、及び太陽電池モジュール
JP2012079838A (ja) 太陽電池モジュールとその製造方法
WO2011148838A1 (fr) Module de cellules photovoltaïques et cellule photovoltaïque
JP5652911B2 (ja) 太陽電池モジュールの製造方法
JP6492570B2 (ja) 結晶系太陽電池モジュール及びその製造方法
JP6097483B2 (ja) 結晶系太陽電池モジュール
JP2017175016A (ja) 太陽電池モジュールの製造方法、太陽電池モジュール、太陽電池セルの接続方法、及び積層体
JP2024122434A (ja) 太陽電池ストリングの製造方法
JP2013243415A (ja) 太陽電池モジュールの製造方法
JP2016100438A (ja) 結晶系太陽電池モジュール及びその製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16844379

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16844379

Country of ref document: EP

Kind code of ref document: A1