WO2013001865A1 - Batterie solaire et module de batteries solaires - Google Patents

Batterie solaire et module de batteries solaires Download PDF

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Publication number
WO2013001865A1
WO2013001865A1 PCT/JP2012/057146 JP2012057146W WO2013001865A1 WO 2013001865 A1 WO2013001865 A1 WO 2013001865A1 JP 2012057146 W JP2012057146 W JP 2012057146W WO 2013001865 A1 WO2013001865 A1 WO 2013001865A1
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WO
WIPO (PCT)
Prior art keywords
electrode
solar cell
bus bar
adhesive
finger
Prior art date
Application number
PCT/JP2012/057146
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English (en)
Japanese (ja)
Inventor
俊行 佐久間
Original Assignee
三洋電機株式会社
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Filing date
Publication date
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Publication of WO2013001865A1 publication Critical patent/WO2013001865A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/0224—Electrodes
    • H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • H01L31/022433—Particular geometry of the grid contacts
    • 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
    • H01L31/06—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 characterised by potential barriers
    • H01L31/072—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 characterised by potential barriers the potential barriers being only of the PN heterojunction type
    • H01L31/0745—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 characterised by potential barriers the potential barriers being only of the PN heterojunction type comprising a AIVBIV heterojunction, e.g. Si/Ge, SiGe/Si or Si/SiC solar cells
    • H01L31/0747—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 characterised by potential barriers the potential barriers being only of the PN heterojunction type comprising a AIVBIV heterojunction, e.g. Si/Ge, SiGe/Si or Si/SiC solar cells comprising a heterojunction of crystalline and amorphous materials, e.g. heterojunction with intrinsic thin layer
    • 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 and a solar cell module.
  • Patent Document 1 discloses a solar cell module configured by connecting a plurality of solar cells arranged according to the arrangement direction to each other by a wiring member.
  • one solar cell included in the plurality of solar cells has bus bar electrodes formed along the arrangement direction on the main surface. It is disclosed that an adhesive is disposed along the bus bar electrode on the bus bar electrode.
  • a wiring member is disposed along the bus bar electrode on the adhesive, and the bus bar electrode extends from one end of the wiring member toward the end of the main surface in a plan view of the main surface.
  • the adhesive has an adhesive extending on the bus bar electrode.
  • a plurality of finger electrodes and a plurality of bus bar electrodes are provided so as to intersect each solar cell of a solar cell module having a plurality of solar cells.
  • a wiring member for connecting adjacent solar cells to each bus bar electrode is connected by an adhesive.
  • the finger electrode covered with the adhesive may be disconnected due to the pressure applied to the finger electrode via the adhesive.
  • a solar cell module intersects a plurality of solar cells connected by wiring members, at least one first electrode provided on each solar cell, and the first electrode, and on each solar cell. At least one second electrode provided; an adhesive that connects the second electrode; and a wiring member facing the second electrode; and at least one of the first electrode and the second electrode The two intersections are exposed from the adhesive and are covered with the wiring member.
  • a solar cell according to the present invention includes a solar cell having a connection region to which a wiring member is connected and an adhesive region to which an adhesive is adhered, a first electrode provided on the solar cell, and a first electrode. And a second electrode provided on the solar cell, a second electrode, a connection region and an adhesion region facing the second electrode, and the intersection of the first electrode and the second electrode is , Provided outside the adhesion region, and provided within the connection region.
  • the reliability of solar cells and solar cell modules can be improved.
  • FIG. 3 is a sectional view taken along line AA in FIG. 2.
  • it is a flowchart which shows the procedure of the manufacturing method of a solar cell.
  • It is a flowchart which shows the procedure of the manufacturing method of a solar cell module in one Embodiment of this invention. It is an enlarged view of the part of the dashed-two dotted line B in FIG.
  • the solar cell module of a comparative example it is a figure corresponding to FIG. It is a top view by the side of the light-receiving surface of the solar cell which concerns on other embodiment of this invention. It is a top view by the side of the light-receiving surface of the solar cell which concerns on other embodiment of this invention. It is a top view by the side of the light-receiving surface of the solar cell which concerns on other embodiment of this invention.
  • FIG. 1 is a cross-sectional view of the solar cell module 1.
  • the solar cell module 1 includes a plurality of solar cells 10, a plurality of wiring members 5, a sealing material 3, a first protection member 2, and a second protection member 4.
  • description will be made assuming that sunlight is incident on the solar cell module 1 along the direction of the arrow L.
  • the plurality of solar cells 10 are arranged at intervals.
  • the wiring member 5 electrically connects the adjacent solar cells 10 to each other.
  • the wiring member 5 is made of a conductive metal or the like. Thereby, the plurality of solar cells 10 are connected in series or in parallel.
  • the first protective member 2 is disposed on the light receiving surface side of the solar cell 10.
  • the 1st protection member 2 can be comprised using glass, translucent resin, etc., for example.
  • the second protective member 4 is disposed on the back side of the solar cell 10.
  • the 2nd protection member 4 can be comprised using the resin film etc. which interposed metal foil, such as a resin film and aluminum foil.
  • the sealing material 3 is sealed between the solar cell 10 and the first protective member 2 and between the solar cell 10 and the second protective member 4.
  • the sealing material 3 can be configured using a resin such as ethylene / vinyl acetate copolymer (EVA) or polyvinyl butyral (PVB), for example.
  • EVA ethylene / vinyl acetate copolymer
  • PVB polyvinyl butyral
  • FIG. 2 is a plan view of the light receiving surface side of the solar cell 10.
  • FIG. 3 is a plan view of the back side of the solar cell 10.
  • 4 is a cross-sectional view taken along line AA in FIG.
  • the “light receiving surface” means a surface on which sunlight is mainly incident.
  • the “back surface” means a surface opposite to the light receiving surface.
  • the solar cell 10 includes a transparent conductive film 11, a p-type amorphous silicon film 12, an i-type amorphous silicon film 13, an n-type single crystal silicon substrate 14, and an i-type amorphous from the light receiving surface side.
  • a silicon film 15, an n-type amorphous silicon film 16, and a transparent conductive film 17 are stacked.
  • the stacking direction of the solar cells 10 indicates the direction in which the above layers are stacked.
  • a collector electrode 21 including two bus bar electrodes 19 and a plurality of finger electrodes 20 is further provided on the light receiving surface side of the solar cell 10.
  • a collector electrode 24 including two bus bar electrodes 22 and a plurality of finger electrodes 23 is further provided on the back side of the solar cell 10.
  • the two bus bar electrodes 19 on the light receiving surface side and the two bus bar electrodes 22 on the back surface side are aligned with each other in the stacking direction of the solar cells 10.
  • being lined up in the stacking direction means a state in which the longitudinal directions of the bus bar electrodes 19 and 22 overlap in a plan view of the solar cell 10.
  • the adhesive 30 connects the collecting electrodes 21 and 24 and the wiring member 5.
  • a thermosetting adhesive such as an epoxy resin, or a two-component curable adhesive obtained by mixing a curing agent with an epoxy resin, an acrylic resin, a urethane resin, or the like can be used.
  • the adhesive 30 is described as using a thermosetting adhesive such as an epoxy resin.
  • the adhesive 30 may contain conductive particles.
  • the n-type single crystal silicon substrate 14 receives the light incident from the light receiving surface and generates carriers.
  • the present invention is not limited to this, and an n-type or p-type conductive crystal semiconductor substrate can be used.
  • a polycrystalline silicon substrate, a gallium arsenide substrate (GaAs), an indium phosphorus substrate (InP), or the like can be used.
  • the i-type amorphous silicon film 13 is an amorphous silicon film laminated on the light-receiving surface of the n-type single crystal silicon substrate 14.
  • the p-type amorphous silicon film 12 is an amorphous silicon film laminated on the i-type amorphous silicon film 13 and doped with p-type impurities.
  • the transparent conductive film 11 is laminated on the p-type amorphous silicon film 12.
  • the transparent conductive film 11 includes, for example, at least one of metal oxides such as indium oxide (In 2 O 3 ), zinc oxide (ZnO), tin oxide (SnO 2 ), and titanium oxide (TiO 2 ). Consists of.
  • the transparent conductive film 11 is described as being formed using indium tin oxide (ITO).
  • the bus bar electrode 19 is an electrode provided for taking out electricity generated in the solar cell 10.
  • the bus bar electrode 19 is preferably arranged so as to collect electricity collected by the finger electrode 20 described later as evenly as possible.
  • a plurality of bus bar electrodes 19 may be provided.
  • the bus bar electrode 19 is formed in a zigzag shape on the transparent conductive film 11.
  • the area width of the bus bar electrode 19 is appropriately determined according to the magnitude of the current to be collected, the thickness of the bus bar electrode 19, and the like, for example, 1 mm.
  • the region width of the bus bar electrode 19 is the width in the short direction of the wiring member 5 and the adhesive 30, and the region where the bus bar electrode 19 is connected to the wiring member 5 is the connection region, and is bonded to the adhesive 30. This area is defined as an adhesion area.
  • the line width of the bus bar electrode 19 is wider than the line width of the finger electrode 20.
  • the finger electrode 20 is an electrode provided to collect and extract the electricity generated in the solar cell 10.
  • the finger electrodes 20 are preferably arranged so that current collection is performed uniformly from within the surface of the solar cell 10.
  • the finger electrode 20 is disposed on the transparent conductive film 11 so as to cross the bus bar electrode 19 and be electrically connected thereto.
  • the plurality of finger electrodes 20 are arranged in parallel to each other.
  • the line width of the finger electrode 20 is appropriately determined according to the magnitude of the current collected, the thickness of the finger electrode 20, and the like, and is set to 100 ⁇ m, for example.
  • the pitch of the finger electrodes 20 is preferably 2 mm, for example.
  • the bus bar electrode 19 and the finger electrode 20 are conductive materials, for example, metals such as Ag (silver), Cu (copper), Al (aluminum), Ti (titanium), Ni (nickel), and Cr (chromium) , And an alloy containing one or more of these metals.
  • the bus bar electrode 19 and the finger electrode 20 can be formed using, for example, a conductive paste such as an Ag paste.
  • the bus bar electrode 19 and the finger electrode 20 will be described as being formed using Ag.
  • the i-type amorphous silicon film 15 is an amorphous silicon film laminated on the back surface of the n-type single crystal silicon substrate 14.
  • the n-type amorphous silicon film 16 is an amorphous silicon film laminated on the i-type amorphous silicon film 15 and doped with n-type impurities.
  • the transparent conductive film 17 is laminated on the n-type amorphous silicon film 16.
  • the transparent conductive film 17 includes the same material as the transparent conductive film 11.
  • the transparent conductive film 17 is described as being formed using indium tin oxide (ITO).
  • the bus bar electrode 22 is an electrode provided for collecting and taking out the electricity generated in the solar cell 10.
  • the bus bar electrode 22 is preferably arranged so as to collect electricity collected by the finger electrode 24 described later as evenly as possible.
  • a plurality of bus bar electrodes 22 may be provided.
  • the bus bar electrode 22 is formed on the transparent conductive film 17 in a zigzag shape.
  • the area width of the bus bar electrode 22 is appropriately determined according to the magnitude of the current collected, the thickness of the bus bar electrode 22, and the like, and is preferably about 1 mm, for example.
  • the region width of the bus bar electrode 22 is the width in the short direction of the wiring member 5 and the adhesive 30, the region where the bus bar electrode 22 is connected to the wiring member 5 is the connection region, and is bonded to the adhesive 30.
  • the region to be described will be described as an adhesion region.
  • the line width of the bus bar electrode 22 is wider than the line width of the finger electrode 23. Since the material and the forming method of the bus bar electrode 22 are the same as those of the bus bar electrode 19, detailed description thereof is omitted.
  • the finger electrode 23 is an electrode provided for collecting and taking out the electricity generated in the solar cell 10. It is preferable to arrange the finger electrodes 23 so as to collect current evenly from within the surface of the solar cell 10.
  • the finger electrode 23 is disposed on the transparent conductive film 17 so as to cross the bus bar electrode 22 and be electrically connected thereto.
  • the plurality of finger electrodes 23 are arranged in parallel to each other.
  • the line width of the finger electrode 24 is appropriately determined according to the magnitude of the current to be collected, the thickness of the finger electrode 23, and the like, for example, 100 ⁇ m.
  • the pitch of the finger electrodes 23 is preferably 1 mm, for example.
  • a metal film may be laminated so as to cover substantially the entire surface of the transparent conductive film 17, and the finger electrode 23 and the bus bar electrode 22 may be formed on the metal film.
  • FIG. 5 is a flowchart showing the procedure of the method for manufacturing the solar cell 10.
  • the n-type single crystal silicon substrate 14 is carried into a vacuum chamber, and an i-type amorphous silicon film 13 is formed on the light receiving surface of the n-type single crystal silicon substrate 14 by using a plasma CVD method.
  • a p-type amorphous silicon film 12 is formed on the i-type amorphous silicon film 13 (S2).
  • an i-type amorphous silicon film 15 is formed on the n-type single crystal silicon substrate 14, and an n-type amorphous silicon film 16 is further formed on the i-type amorphous silicon film 15. Is formed (S4).
  • a transparent conductive film 11 and a transparent conductive film 17 made of ITO are respectively formed on the p-type amorphous silicon film 12 and the n-type amorphous silicon film 16 by using a sputtering method (S6).
  • collector electrodes 21 and 24 are formed on the transparent conductive films 11 and 17, respectively, using a screen printing method (S8).
  • the plurality of bus bar electrodes 19 are provided along the direction intersecting the finger electrodes 20.
  • the adjacent bus bar electrodes 19 are installed in a zigzag shape so that the distance between them is the farthest at the intersection with the adjacent finger electrode 20 and the distance between them is the closest at the intermediate part of the adjacent finger electrode 20. Since the plurality of bus bar electrodes 22 and finger electrodes 23 are installed in the same manner as the plurality of bus bar electrodes 19 and finger electrodes 20, detailed description thereof is omitted. Thus, one solar cell 10 can be obtained by obtaining the steps S2 to S8.
  • FIG. 6 is a flowchart showing the procedure of the method for manufacturing the solar cell module 1.
  • thermocompression-bonding process it is suitable to determine suitably the temperature conditions, pressure conditions, etc. required in order for the wiring member 5 to connect firmly, without shifting with respect to the bus-bar electrode 19. .
  • a pressure of 0.1 MPa to 0.6 MPa at a temperature of 200 ° C. for 5 seconds to 20 seconds.
  • thermocompression treatment is performed under the same conditions as in step S ⁇ b> 14 to connect each bus bar electrode 22 and each wiring member 5 (S ⁇ b> 16).
  • the process of S16 is finished, the plurality of solar cells 10 are electrically connected.
  • the solar cell module 1 can be obtained by obtaining the steps S12 to S18.
  • the wiring member 5 and the bus bar electrode 19 are connected using the adhesive 30 in the step S14 of the method for manufacturing the solar cell module 1.
  • the arrangement relationship of the intersections of the wiring member 5, the adhesive 30, the finger electrode 20, and the bus bar electrode 19 will be described in further detail below.
  • FIG. 7 is an enlarged view of a portion indicated by a two-dot chain line B in FIG.
  • bus bar electrodes 19a, 19b each will be described as bus bar electrodes 19a, 19b.
  • finger electrode 20a, 20b, 20c, 20d is demonstrated as finger electrode 20a, 20b, 20c, 20d.
  • the width d 1 of the wiring member 5 is wider than the width d 2 of the adhesive 30, and as shown in FIG. It is provided so as not to be exposed from the member 5.
  • the width d 2 of the adhesive 30 is 6 mm
  • the width d 1 of the wiring member is preferably 6.5 mm.
  • the intersection 31a is located outside the adhesive 30 and provided inside the wiring member 5, as shown in FIG. . That is, the intersection point 31 a is exposed from the adhesive 30 and is covered with the wiring member 5. Further, the intersections 31b to 31d of the bus bar electrode 19a and the finger electrodes 20b to 20d are also exposed from the adhesive 30 and covered with the wiring member 5 as shown in FIG.
  • intersections 32a to 32d of the zigzag bus bar electrode 19b and the finger electrodes 20a to 20d are exposed from the adhesive 30 as shown in FIG. Covered.
  • intersection points 31a and 32a provided on one finger electrode 20a are separately provided on both sides of the adhesive 30 as shown in FIG.
  • the intersections 31b, 32b to 31d, and 32d provided on the other finger electrodes 20b to 20d are separately arranged on both sides of the adhesive 30.
  • the problem of the comparative example will be described with reference to FIG.
  • the comparative example as shown in FIG. 8, only one bus bar electrode 19 c is provided so as to be covered with the adhesive 30. That is, the intersections 33a to 33d of the bus bar electrode 19c and the finger electrodes 20a to 20d are covered with the adhesive 30. At this time, the line width of the finger electrodes 20a to 20d is narrower than the line width of the bus bar electrode 19c, and the adhesive 30 is used when the wiring member 5 is connected to the bus bar electrode 19c in the portion covered with the adhesive 30.
  • disconnection may occur due to the stress applied to the finger electrodes 20a to 20d through the wire and the influence of the force applied to the finger electrodes 20a to 20d through the adhesive 30 in other processes.
  • a disconnection may occur at a plurality of disconnection locations 25a to 25d and 26a to 26d.
  • the finger electrode 20a is divided into finger electrodes 20a 1 , 20a 2 , and 20a 3 at the disconnection points 25a and 26a.
  • the bus bar electrode 19c is, although it is possible to collector from chopped finger electrodes 20a 3 through the intersection 33a, from finger electrodes 20a 1, 20a 2 occupying most of the finger electrodes 20a be collector
  • the current collection efficiency in the bus bar electrode 19c and thus in the wiring member 5 is lowered, and the reliability of the solar cell module 1 is lowered.
  • the bus bar electrode 19c cannot collect current from the finger electrodes 20b 1 to 20d 2 occupying most of the finger electrodes 20b to 20d.
  • the current collection efficiency in the member 5 is reduced, and the reliability of the solar cell module 1 is reduced.
  • produces in several places above, for example, it may disconnect only in the disconnection part 25a. Even in this case, since the electric charge collected by the finger electrode 20a 1 cannot be collected by the bus bar electrode 19c, the current collection efficiency in the wiring member 5 is lowered, and as a result, the reliability of the solar cell module 1 is lowered. To do.
  • the finger electrode 20a is divided into finger electrodes 20a 1 , 20a 2 , and 20a 3 at the disconnection points 25a and 26a.
  • the charge collected by the finger electrode 20a 1 is collected by the bus bar electrode 19a through the intersection 31a
  • the charge collected by the finger electrode 20a 2 is collected by the bus bar electrode 19b through the intersection 32a.
  • Current is collected.
  • the charges collected by the finger electrodes 20b 1 to 20d 2 are transferred to the bus bar electrodes via the corresponding intersections 31b to 32d, respectively.
  • Current is collected by 19a and 19b.
  • the solar cell module 1 since charges from the finger electrodes 20a 1 to 20d 2 occupying at least most of the finger electrodes 20a to 20d can be collected, current collection in the bus bar electrodes 19a and 19b and eventually the wiring member 5 is possible. Efficiency can be improved and the reliability of the solar cell module 1 can be improved.
  • the finger electrode 20 is exposed from the adhesive 30 even if the finger electrode 20 is disconnected in any region covered with the adhesive 30.
  • the finger electrode 20 of the part can maintain the state connected to the bus bar electrode 19. Thereby, the current collection efficiency in the wiring member 5 can be improved, and the reliability of the solar cell module 1 can be improved.
  • the intersection of the finger electrode part 20 provided on the light-receiving surface of the solar cell 10 and the bus bar electrode part 19 was described here, the finger electrode part 23 and the bus bar electrode part 22 provided on the back surface of the solar cell 10 are described.
  • at least the finger electrode 23 exposed from the adhesive 30 can maintain a state where it is connected to the bus bar electrode 22.
  • the solar cell module 1 all the intersections of the bus-bar electrode 19 and the finger electrode 20 are already covered with the wiring member 5 that has already shielded sunlight. That is, since the sun light is not unnecessarily blocked by the bus bar electrode 19, the output of the solar cell module 1 can be improved more suitably.
  • the bus bar electrode 19 and the bus bar electrode 22 on the surface side of the solar cell module 1 are arranged along the stacking direction of the solar cells 10, the connection is made when the wiring member 5 is connected to the bus bar electrodes 19 and 23. It is possible to suppress the shear stress generated by shifting the region and prevent the solar cell 10 from cracking. Further, even when an undesired stress is applied to the wiring member 5 after being formed into the solar cell module 1, the bus bar electrode 19 and the bus bar electrode 22 are aligned with each other along the stacking direction of the solar cells 10, so that stress And the solar cell 10 can be prevented from cracking.
  • the solar cell module 1 described above, all the intersections of the bus bar electrodes 19 and the finger electrodes 20 have been described as being covered by the wiring member 5, but if at least one intersection is covered by the wiring member 5, it is not possible.
  • the current collection efficiency in the bus bar electrode 19 can be improved and the reliability of the solar cell module 1 can be improved while suppressing the necessary light shielding loss.
  • at least one of the intersections of the bus bar electrodes 19 and 23 and the finger electrodes 20 and 22 is aligned along the stacking direction of the solar cells 10 on the light receiving surface side and the back surface side, the solar cell 10 is cracked. Can be prevented.
  • the bus-bar electrode 19 was demonstrated as what has a zigzag-shaped shape, if the intersection of the bus-bar electrode 19 and the finger electrode 20 is the shape which is not covered with the adhesive agent 30, other For example, it may be a stripe shape as shown in FIG. 9, a cross shape as shown in FIG. 10, or a linear shape as shown in FIG. There may be.
  • FIGS. 9 to 11 are plan views on the light receiving surface side of a solar cell 10 which is a modification of the solar cell module 1. Even in such a stripe-shaped, cross-shaped or linear bus bar electrode 19, the intersection of the finger electrode 20 and the bus bar electrode 19 is not covered with the adhesive 30 and is covered with the wiring member 5. Since it is in a state, the same effect as the solar cell module 1 is obtained.
  • the solar cell 10 since the solar cell 10 includes a connection region where the bus bar electrodes 19 and 22 are connected to the wiring member 5 and an adhesive region where the bus bar electrodes 19 and 22 are bonded to the adhesive 30, the solar cell module 1 The same effect as that obtained can be achieved.
  • the solar cell 1 includes at least intersections between the finger electrodes 20 and 23 and the bus bar electrodes 19 and 22 that are provided outside the adhesion region and provided in the connection region. Then, even when part of the finger electrodes 20 and 23 is divided due to the configuration of the intersection, the current collection efficiency in the bus bar electrodes 19 and 22 can be improved, and the reliability of the solar cell 10 can be improved.

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

Abstract

L'invention concerne un module de batteries solaires (1) qui comporte : une pluralité de batteries solaires (10) connectées par un élément conducteur (5) ; au moins une électrode à doigt (20) disposée sur les batteries solaires (10) ; au moins une électrode de barre omnibus (19) qui coupe l'électrode à doigt (20) et est disposée sur les batteries solaires (10) ; et un adhésif (30) qui connecte l'électrode de barre omnibus (19) et l'élément conducteur (5) tourné vers l'électrode de barre omnibus (19). Au moins une intersection de l'électrode à doigt (20) et de l'électrode de barre omnibus (19) est exposée à partir de l'adhésif (30) et est recouvert par l'élément conducteur (5).
PCT/JP2012/057146 2011-06-30 2012-03-21 Batterie solaire et module de batteries solaires WO2013001865A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011145570A JP5967512B2 (ja) 2011-06-30 2011-06-30 太陽電池モジュール
JP2011-145570 2011-06-30

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WO2013001865A1 true WO2013001865A1 (fr) 2013-01-03

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WO (1) WO2013001865A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103840017A (zh) * 2014-03-06 2014-06-04 常熟理工学院 一种石墨烯硅基太阳能电池及其制造方法
TWI503995B (zh) * 2013-06-14 2015-10-11 Neo Solar Power Corp 太陽能電池之電極結構及其製造方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HUP1700044A2 (en) * 2017-01-31 2018-12-28 Ecosolifer Invest Ag Solar cell with improved electrodes and solar module composed of such cells

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007062689A1 (de) * 2007-01-05 2008-07-10 Cornelius Paul Ausbildung von Kontaktierungs- und Stromsammelelektroden für Solarzellen
JP2008159895A (ja) * 2006-12-25 2008-07-10 Sanyo Electric Co Ltd 太陽電池セル及び太陽電池モジュール
WO2009099179A1 (fr) * 2008-02-08 2009-08-13 Sanyo Electric Co., Ltd. Module de cellule solaire et cellule solaire
WO2010095583A1 (fr) * 2009-02-17 2010-08-26 三洋電機株式会社 Cellule solaire et module de cellule solaire
WO2010116914A1 (fr) * 2009-04-09 2010-10-14 三洋電機株式会社 Cellule solaire et module de cellule solaire
JP2010238927A (ja) * 2009-03-31 2010-10-21 Sanyo Electric Co Ltd 太陽電池セル、太陽電池モジュールおよび太陽電池システム
WO2011021655A1 (fr) * 2009-08-19 2011-02-24 三洋電機株式会社 Pile solaire, module de pile solaire et système de pile solaire

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5279334B2 (ja) * 2008-04-28 2013-09-04 三洋電機株式会社 太陽電池モジュール

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008159895A (ja) * 2006-12-25 2008-07-10 Sanyo Electric Co Ltd 太陽電池セル及び太陽電池モジュール
DE102007062689A1 (de) * 2007-01-05 2008-07-10 Cornelius Paul Ausbildung von Kontaktierungs- und Stromsammelelektroden für Solarzellen
WO2009099179A1 (fr) * 2008-02-08 2009-08-13 Sanyo Electric Co., Ltd. Module de cellule solaire et cellule solaire
WO2010095583A1 (fr) * 2009-02-17 2010-08-26 三洋電機株式会社 Cellule solaire et module de cellule solaire
JP2010238927A (ja) * 2009-03-31 2010-10-21 Sanyo Electric Co Ltd 太陽電池セル、太陽電池モジュールおよび太陽電池システム
WO2010116914A1 (fr) * 2009-04-09 2010-10-14 三洋電機株式会社 Cellule solaire et module de cellule solaire
WO2011021655A1 (fr) * 2009-08-19 2011-02-24 三洋電機株式会社 Pile solaire, module de pile solaire et système de pile solaire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI503995B (zh) * 2013-06-14 2015-10-11 Neo Solar Power Corp 太陽能電池之電極結構及其製造方法
CN103840017A (zh) * 2014-03-06 2014-06-04 常熟理工学院 一种石墨烯硅基太阳能电池及其制造方法
CN103840017B (zh) * 2014-03-06 2016-06-08 常熟理工学院 一种石墨烯硅基太阳能电池及其制造方法

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