WO2011093450A1 - Module de cellules solaires et procédé de production de module de cellules solaires - Google Patents

Module de cellules solaires et procédé de production de module de cellules solaires Download PDF

Info

Publication number
WO2011093450A1
WO2011093450A1 PCT/JP2011/051752 JP2011051752W WO2011093450A1 WO 2011093450 A1 WO2011093450 A1 WO 2011093450A1 JP 2011051752 W JP2011051752 W JP 2011051752W WO 2011093450 A1 WO2011093450 A1 WO 2011093450A1
Authority
WO
WIPO (PCT)
Prior art keywords
solar cell
wiring member
wiring
disposed
cutting
Prior art date
Application number
PCT/JP2011/051752
Other languages
English (en)
Japanese (ja)
Inventor
悠 丸山
裕幸 神納
Original Assignee
三洋電機株式会社
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
Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Publication of WO2011093450A1 publication Critical patent/WO2011093450A1/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
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • H01L31/0508—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module the interconnection means having a particular shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • 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 a method for manufacturing the solar cell module, and more particularly to a solar cell module provided with a wiring material and a method for manufacturing the solar cell module.
  • a solar cell module provided with a wiring material and a method for manufacturing the solar cell module are known.
  • Such a solar cell module and its manufacturing method are disclosed in, for example, Japanese Patent Application Laid-Open No. 2004-281797.
  • JP-A-2004-281797 discloses a first solar cell and a second solar cell that are arranged adjacent to each other, and a connection tab (wiring material) that connects the first solar cell and the second solar cell.
  • a solar cell module provided is disclosed.
  • connection tabs on the light receiving surface side are arranged on the upper surfaces of the first solar cell and the second solar cell, respectively.
  • connection tabs on the non-light-receiving surface side are arranged on the lower surfaces of the first solar cell and the second solar cell, respectively.
  • connection tab on the light receiving surface side of the second solar cell is provided so as to extend to the lower surface side of the first solar cell, and the connection tab on the non-light receiving surface side disposed on the lower surface of the first solar cell. And are connected by solder on the lower surface side of the first solar cell.
  • the present invention has been made to solve the above-described problems, and one object of the present invention is to suppress the occurrence of cracks, chips and cracks in a solar cell when pressure is applied. It is to provide a solar cell module capable of improving the yield and a method for manufacturing the solar cell module.
  • the solar cell module according to the first aspect of the present invention is arranged on the first solar cell and the second solar cell arranged adjacent to each other and on one surface side of the first solar cell.
  • a third wiring member connected to the wiring member, and an end of the second wiring member on the second solar cell side substantially coincides with an end of the first wiring member on the second solar cell side in plan view Or, it is arranged so as to be located on the side opposite to the second solar cell side from the end of the first wiring member on the second solar cell side.
  • the end of the second wiring member on the second solar cell side when viewed in plan is the end of the first wiring member on the second solar cell side.
  • the second wiring material second by disposing the first wiring material so as to be located on the opposite side of the second solar cell side from the end of the first wiring material on the second solar cell side. Since the first wiring member is present in the portion on the one surface side of the first solar cell corresponding to the portion where the end portion on the solar cell side is disposed, the second wiring side is second from the other surface side of the first solar cell.
  • the pressure applied to the second wiring material can be received at the end of the first wiring material on the second solar cell side or in the plane portion near the end of the first wiring material. it can. Thereby, it can suppress that a pressure concentrates on the part of the surface of the 1st solar cell in which the edge part by the side of the 2nd solar cell of the 1st wiring material is located. Thereby, it can suppress that a crack, a chip
  • the third wiring member is connected to the second wiring member on the other surface side of the first solar cell, so that the pressure applied to the first wiring member from the one surface side is connected to the second wiring member.
  • the solar cell module Since it can receive with a wiring material, it can suppress that a pressure concentrates on the part of the surface of the 1st solar cell corresponding to the edge part by the side of the 2nd solar cell of a 2nd wiring material. Thereby, it can suppress that a crack, a chip
  • an end of the second wiring member on the second solar cell side is closer to the second solar cell side than an end of the first wiring member on the second solar cell side.
  • the interval between the second solar cell side end of the second wiring member and the second solar cell side side surface of the first solar cell is the end of the first wiring member on the second solar cell side. 2 mm or more than the distance between the first solar cell and the side surface of the first solar cell on the second solar cell side. If comprised in this way, while being able to receive the pressure from the other surface side more reliably in the plane part formed by the length of at least about 2 mm near the edge part of the 1st wiring material, Since the pressure can be received by the third wiring member, the concentration of pressure on the surface of the first solar cell can be effectively suppressed.
  • the end of the second wiring member is located on the opposite side of the end of the first wiring member from the second solar cell side, preferably the end of the second wiring member on the second solar cell side.
  • the distance between the second solar cell side of the first solar cell and the second solar cell side end of the first wiring member and the second solar cell side surface of the first solar cell, and It is larger than the thickness of the first solar cell.
  • the distance between the end portion of the second wiring member on the second solar cell side and the side surface of the first solar cell on the second solar cell side is that of the first wiring member. It is not less than the distance between the end portion on the second solar cell side and the side surface on the second solar cell side of the first solar cell, and is 6 mm or less. If comprised in this way, while being able to suppress a pressure concentrating on the surface of the 1st solar cell corresponding to the edge part by the side of the 2nd solar cell of the 1st wiring material, it is 2nd of the 2nd wiring material.
  • the third wiring member is arranged in the second wiring member so as to overlap in a plan view in a state of being arranged on the opposite side of the second wiring member from the first solar cell. Connected to wiring material. If comprised in this way, the part with which the 2nd wiring material and the 3rd wiring material mutually overlapped can be easily connected with solder etc.
  • the third solar cell is preferably disposed on the opposite side of the second solar cell from the first solar cell and adjacent to the second solar cell, and one of the third solar cells.
  • a fourth wiring member disposed on the side surface and extending to the other surface side of the second solar cell; a fourth wiring member disposed on the other surface side of the second solar cell;
  • a third solar cell side end of the fifth wiring member substantially coincides with an end portion of the third wiring member on the third solar cell side in plan view. Or it arrange
  • the 3rd wiring material exists in the part by the side of the one surface side of the 2nd solar cell corresponding to the part by which the edge part by the side of the 3rd solar cell of the 5th wiring material is arrange
  • positioned even when pressure is applied to the fifth wiring member from the other surface side of the second solar cell, the pressure applied to the fifth wiring member is changed to the end of the third wiring member on the third solar cell side or the second wiring member. It can be received in the plane portion near the end of the three wiring members. Thereby, it can suppress that a pressure concentrates on the part of the surface of the 2nd solar cell in which the edge part by the side of the 3rd solar cell of a 3rd wiring material is located.
  • the fourth wiring member is connected to the fifth wiring member on the other surface side of the second solar cell, so that the pressure applied to the third wiring member from the one surface side is connected to the fifth wiring member. Since it can receive with a wiring material, it can suppress that a pressure concentrates on the part of the surface of the 2nd solar cell corresponding to the edge part by the side of the 3rd solar cell of a 5th wiring material. Thereby, it can suppress that a crack, a chip
  • the end of the fifth wiring member on the third solar cell side is located on the opposite side of the third solar cell side from the end of the third wiring member on the third solar cell side. Has been placed. If comprised in this way, while the pressure from the other surface side can be reliably received in the plane part near the edge part of a 3rd wiring material, the pressure from one surface side can be received by a 4th wiring material. Therefore, it can suppress more that a pressure concentrates on the surface of a 2nd solar cell.
  • the end of the second wiring member on the second solar cell side is located on the opposite side of the second solar cell side from the end of the first wiring member on the second solar cell side, and the end of the fifth wiring member on the third solar cell side is the third wiring. It is located on the opposite side to the third solar cell side from the end of the material on the third solar cell side. If comprised in this way, it can suppress that a pressure concentrates on both the surface of a 1st solar cell and the surface of a 2nd solar cell.
  • the fourth wiring member is disposed on the opposite side of the fifth wiring member from the second solar cell.
  • they are connected to the fifth wiring member so as to overlap in plan view. If comprised in this way, the part in which the 4th wiring material and the 5th wiring material overlapped each other can be easily connected with solder etc.
  • the laminate further includes a filler disposed between the first cover and the first solar cell and between the second cover and the second solar cell by laminating.
  • the thickness of the first solar cell and the second solar cell is 150 ⁇ m or less.
  • the first solar cell having a thickness of 150 ⁇ m or less is relatively easily cracked with respect to pressure, in this case, if the configuration according to the first aspect is applied, the first wiring member on the second solar cell side The pressure can be suppressed from concentrating on the surface of the first solar cell corresponding to the end of the second solar cell, and the pressure on the surface of the first solar cell corresponding to the end of the second wiring member on the second solar cell side. Can be concentrated.
  • the manufacturing method of the solar cell module according to the second aspect of the present invention includes a first solar cell and a defective solar cell that are arranged adjacent to each other, and a first wiring that is arranged on one side of the first solar cell.
  • a solar cell group comprising a material and a second wiring material disposed on the one surface side of the defective solar cell
  • the defective solar cell is repaired.
  • a method for manufacturing a solar cell module comprising a step of replacing the solar cell module with a second solar cell for the first wiring material on the other surface side of the first solar cell and the first wiring material when viewed in plan Cut at a position substantially coincident with the end of the defective product on the solar cell side, or at a position opposite to the end of the defective product of the first wiring member on the solar cell side.
  • the third solar cell is disposed on one side of the second solar cell disposed at the position where the defective solar cell is disposed, and extends to the other surface of the first solar cell. Connecting on the other surface side.
  • the second wiring member is disposed on the other surface side of the first solar cell, and the first wiring member is not seen as viewed in plan. Cutting at a position substantially coincident with the end of the non-defective solar cell side, or at a position opposite to the solar cell side of the defective product from the end of the defective first solar cell side of the wiring material, By connecting the second wiring material after cutting and the third wiring material on the other surface side of the first solar cell, the second wiring material corresponding to the portion where the end portion on the second solar cell side of the second wiring material is disposed.
  • the first wiring member is present on the one surface side portion of the one solar cell, the second wiring member and the third wiring member after being cut are connected to each other from the other surface side of the first solar cell. Even when pressure is applied to the second wiring material, the pressure applied to the second wiring material is changed to the second value of the first wiring material. It can be received in the end portion or end plane portion in the vicinity of the first wiring member for solar cell side. Thereby, it can suppress that a pressure concentrates on the part of the surface of the 1st solar cell in which the edge part by the side of the 2nd solar cell of the 1st wiring material is located.
  • the third wiring member is connected to the second wiring member on the other surface side of the first solar cell, so that the pressure applied to the first wiring member from the one surface side is connected to the second wiring member. Since it can receive by a wiring material, it can suppress that a pressure concentrates on the surface of the 1st solar cell corresponding to the edge part by the side of the 2nd solar cell of a 2nd wiring material. Thereby, it can suppress that a crack, a chip
  • the manufacturing method of the solar cell module according to the second aspect preferably, after the step of connecting the second wiring material after cutting and the third wiring material, one side of the first solar cell and the second solar cell. And a step of laminating the filler and the cover on each of the other surface side in this order and laminating by applying pressure.
  • the concentration of pressure on the surfaces of the first solar cell and the second solar cell is suppressed. can do.
  • the step of cutting the second wiring member includes a step of drawing and cutting the second wiring member to the other surface side of the first solar cell, Formed by cutting the second wiring material after the step of cutting the two wiring materials and prior to the step of connecting the second wiring material and the third wiring material after cutting.
  • the method further includes a step of applying a pressure to the folded portion of the second wiring member after being cut to form a straight line. If comprised in this way, if the structure by the said 2nd aspect is applied in the manufacturing method of the solar cell module in which a pressure is applied at the time of a folding correction, it will suppress that a pressure concentrates on the surface of a 1st solar cell. Can do.
  • the step of connecting the second wiring member after cutting and the third wiring member includes the step of connecting the third wiring member to the second wiring member after cutting. It includes a step of connecting to the second wiring member from the side opposite to the first solar cell so as to overlap in plan view. If comprised in this way, the 2nd wiring material after the cutting
  • the portion where the second wiring material and the third wiring material after cutting overlap each other can be easily connected with solder or the like.
  • the step of cutting the second wiring member is configured such that the second wiring member is made less than the end of the defective first wiring member on the solar cell side. It includes a step of cutting at a position opposite to the non-defective solar cell side. If comprised in this way, the pressure from the other surface side added after connecting the 2nd wiring material and 3rd wiring material after a cutting
  • the second wiring member is made of a defective product from a side surface on the solar cell side of the defective product of the first solar cell. It includes a step of cutting at a position having a distance of 6 mm or less on the side opposite to the solar cell side. If comprised in this way, while being able to suppress a pressure concentrating on the surface of the 1st solar cell corresponding to the edge part by the side of the 2nd solar cell of the 1st wiring material, it is 2nd of the 2nd wiring material. It can suppress that a pressure concentrates on the surface of the 1st solar cell corresponding to the edge part by the side of a solar cell.
  • the second wiring member is cut at a position having a distance of 6 mm or less from the side of the defective first solar cell on the solar cell side to the side opposite to the defective solar cell side.
  • the distance between the second solar cell side end of the first solar cell and the side surface of the first solar cell on the second solar cell side becomes too large, and the surface area of the first solar cell in which the second wiring member is not arranged increases.
  • the solar cell group is disposed on the opposite side of the defective solar cell from the first solar cell, and is adjacent to the defective solar cell.
  • the step of cutting the second wiring member is further provided with a solar cell and a fourth wiring member disposed on the one side of the third solar cell and extending to the other side of the defective solar cell.
  • the wiring member is located on the other surface side of the defective solar cell and at a position substantially coincident with the end of the third wiring member on the third solar cell side in plan view, or the third wiring member Including a step of cutting at a position opposite to the third solar cell side with respect to the end portion on the third solar cell side, and after the step of cutting the second wiring material and the fourth wiring material, While removing from the solar cell group, the second thick plate is located at the position where the defective solar cell was placed.
  • a step of arranging a battery, and the step of connecting the second wiring member after cutting and the third wiring member includes a step of connecting the fourth wiring member after cutting disposed on one side of the third solar cell, A step of connecting the fifth wiring member disposed on the other surface side of the second solar cell disposed at the position where the non-defective solar cell has been disposed on the other surface side of the second solar cell. If comprised in this way, it can suppress that a pressure concentrates on both the surface of a 1st solar cell and the surface of a 2nd solar cell.
  • the second wiring material is disposed on the defective solar cell side with respect to the defective solar cell side end of the first wiring material.
  • FIG. 3 is a cross-sectional view of the vicinity of a solar cell group not including a replacement solar cell of the solar cell module taken along line 1000-1000 in FIGS. 1 and 2;
  • FIG. 3 is an enlarged cross-sectional view of a solar cell group not including a replacement solar cell of the solar cell module taken along line 1000-1000 in FIGS. 1 and 2;
  • FIG. 3 is a cross-sectional view of the vicinity of a solar cell group including a replacement solar cell for a solar cell module taken along the line 2000-2000 in FIGS. 1 and 2;
  • FIG. 3 is a cross-sectional view of the vicinity of a solar cell group including a replacement solar cell for a solar cell module taken along the line 2000-2000 in FIGS. 1 and 2;
  • FIG. 3 is an enlarged cross-sectional view of a solar cell group including a solar cell for replacement of a solar cell module along the line 2000-2000 in FIGS. 1 and 2. It is the expanded sectional view which showed the state in which the defective solar cell exists in the replacement
  • a solar cell module 1 includes a plate-like solar cell panel 2 and a terminal box 3 fixed to the back side of the solar cell panel 2 (see FIG. 2). ) And a metal frame 4 that supports the side surface of the solar cell panel 2.
  • the solar cell panel 2 includes a front cover 21 made of a transparent member such as a glass plate or an acrylic plate, and a weather resistant back made of a resin film such as polyethylene terephthalate (PET).
  • Solar cell groups 23, 24, 25, 26, 27, and 28 including a plurality of solar cells 40 that are disposed between the side cover 22, the front-side cover 21, and the back-side cover 22 and are electrically connected in series. (See FIG.
  • the front cover 21 and the back cover 22 are examples of the “first cover” and the “second cover” in the present invention, respectively.
  • the solar cell module 1 includes a replacement solar cell 42 in addition to the normal solar cells 40, 41, and 43.
  • the replacement solar cell 42 refers to a solar cell disposed by replacement work at a position where a defective solar cell 44 (see FIG. 7) described later is disposed.
  • the thickness t in the Z direction between the solar cells 40, 41 and 43 and the replacement solar cell 42 is about 100 ⁇ m.
  • the thickness t of the solar cells 40, 41 and 43 and the replacement solar cell 42 in the Z direction is about 150 ⁇ m or less.
  • the replacement solar cell 42 is an example of the “second solar cell” in the present invention.
  • a plurality of finger electrodes 40a extending in the X direction are provided on the upper surface of the solar cell 40 (the arrow Z1 direction side in FIG. 3).
  • a plurality of finger electrodes 40b extending in the X direction are provided on the lower surface of the solar cell 40 (arrow Z2 direction side in FIG. 3).
  • bus bar electrodes 30 extending in the direction (Y direction) substantially orthogonal to the finger electrodes 40 a and the finger electrodes 40 b are provided on the upper surface and the lower surface of the solar cell 40. Since the bus bar electrode 30 has a small thickness, the bus bar electrode 30 is not shown in FIGS. 3 and 5.
  • the upper surface side (the arrow Z1 direction side in FIG. 3) of one solar cell 40 among the solar cells 40 adjacent to each other and the lower surface side of the other solar cell 40 ( 3 are connected in series by a wiring material (tab electrode) 50a made of solder-plated copper wire or the like via the bus bar electrode 30.
  • each wiring member 50a is connected to a connecting member 3a for connecting to an adjacent solar cell group or terminal box 3 (see FIG. 2).
  • the end of the wiring member 50a arranged on the upper surface side of the plurality of solar cells 40 on the arrow Y2 direction side is a predetermined distance L1 from the side surface of the solar cell 40 on the arrow Y2 direction side. It is located at a distance.
  • the distance L1 is about 1 mm.
  • the solar cell groups 23, 25, 26 and 27 arranged in parallel with the solar cell group 24 also have the same structure as the solar cell group 24.
  • the solar cell 41, the replacement solar cell 42, the solar cell 43, and the solar cell 40 are arranged in this order from the arrow Y1 direction side in the Y direction. ing.
  • the solar cell 41 is an example of the “first solar cell” in the present invention
  • the solar cell 43 is an example of the “third solar cell” in the present invention.
  • the wiring member (tab electrode) 50 b is disposed on the upper surface side of the solar cell 41 and is cut off on the lower surface side of the solar cell 41.
  • a wiring material (tab electrode) 50c is arranged.
  • a wiring member (tab electrode) 50d is disposed on the upper surface side of the replacement solar cell 42.
  • the wiring member 50c and the wiring member 50d are connected by the solder 80 in a state where they overlap each other on the lower surface side of the solar cell 41 (overlapping state). At this time, the wiring member 50d is connected to the wiring member 50c in a state where it overlaps below (Z2 side) the wiring member 50c.
  • the wiring member 50b is an example of the “first wiring member” in the present invention.
  • the wiring member 50c is an example of the “second wiring member” and the “second wiring member after cutting” in the present invention, and the wiring member 50d is an example of the “third wiring member” in the present invention.
  • a wiring member (tab electrode) 50e is disposed on the lower surface side of the replacement solar cell 42. Further, a cut wiring member (tab electrode) 50 f is disposed on the upper surface side of the solar cell 43.
  • the wiring member 50e and the wiring member 50f are connected by the solder 80 in a state where they overlap each other on the lower surface side of the replacement solar cell 42 (overlapping state). At this time, the wiring member 50f is connected to the wiring member 50e in a state where it overlaps below the wiring member 50e (Z2 side).
  • the wiring member 50e is an example of the “fifth wiring member” in the present invention, and the wiring member 50f is an example of the “fourth wiring member” in the present invention.
  • the lower surface side of the solar cell 43 and the upper surface side of the solar cell 40 are connected by the wiring member 50a.
  • the wiring member 50b connected on the upper surface side of the solar cell 40 located on the arrow Y1 direction side and the lower surface side of the solar cell 40 located on the arrow Y2 direction side are connected.
  • the connected wiring members 50a are respectively connected to the connecting members 3a for connecting to the adjacent solar cell group 27 or the terminal box 3 (see FIG. 2).
  • the ends on the arrow Y2 direction side are respectively disposed at positions separated from the ends on the arrow Y2 direction side of the solar cell 41, the replacement solar cell 42 and the solar cell 43 by a distance L1 (about 1 mm) in the arrow Y1 direction.
  • the end portions on the arrow Y2 direction side of the wiring members 50c and 50e arranged on the lower surface side (arrow Z2 direction side) of the solar cell 41 and the replacement solar cell 42 are respectively the solar cell 41. And it is arrange
  • the end of the wiring member 50e on the lower surface side of the replacement solar cell 42 on the arrow Y2 direction side is disposed on the arrow Y1 direction side of the end of the wiring member 50d on the arrow Y2 direction side.
  • the distance L2 may be not less than the distance L1 (about 1 mm) and not more than about 6 mm.
  • the lower surface side of the solar cell 41 and the upper surface side of the defective solar cell 44 are connected by the wiring member 50c. Further, the lower surface side of the defective solar cell 44 and the upper surface side of the solar cell 43 are connected by the wiring member 50f.
  • the ends of the wiring members 50b and 50c on the arrow Y2 direction side are separated from the ends of the solar cell 41 and the defective solar cell 44 on the arrow Y2 direction side by a distance L1 (about 1 mm) in the arrow Y1 direction. It is arranged at the position.
  • the wiring member 50c is disposed on the lower surface side (arrow Z2 direction side) of the solar cell 41 and the wiring.
  • the defective part of the material 50f is cut with a nipper at predetermined positions A and B, respectively, on the lower surface side of the solar cell 44.
  • the wiring member 50c is cut at a position A away from the end of the solar cell 41 on the arrow Y2 direction side by a distance L2 (about 3 mm) in the arrow Y1 direction
  • the wiring member 50f is The non-defective solar cell 44 is cut at a position B away from the end on the arrow Y2 direction side by a distance L2 in the arrow Y1 direction. That is, the wiring member 50c is cut on the arrow Y1 direction side from the end of the wiring member 50b on the arrow Y2 direction side, and the wiring member 50f is cut on the arrow Y2 direction side of the wiring member 50c in the arrow Y1 direction. Cut by side.
  • solder (not shown) is dissolved to remove the connection between the bus bar electrode 30 on the lower surface of the solar cell 41 and the wiring member 50c, and to connect the bus bar electrode 30 on the lower surface of the defective solar cell 44 to the wiring member 50f. Then, the wiring members 50c and 50f are pulled out in the direction of the arrow Z2 and cut.
  • the wiring material 50c in the vicinity of the position to be cut is cut in a state of being drawn downward (in the direction of arrow Z2), whereby the side of the wiring material 50c in the direction of arrow Z2 is folded. As a result, a folded portion 50g is formed in the wiring member 50c. Thereafter, the defective solar cell 44 is removed.
  • the upper surface side (arrow Z1 direction side) of the solar cell 41 is placed on the stage, and the folded portion 50g extends along the Z direction from the lower surface side (arrow Z2 direction side) of the solar cell 41.
  • the folded portion 50g is corrected to a straight line that is the state before the folded portion 50g occurs (folded correction).
  • the pressure applied to the folded portion 50g is Since the pressure from the lower surface side applied by the folding correction can be received in the plane portion in the vicinity of the end portion of the wiring member 50b, it corresponds to the end portion on the arrow Y2 side of the wiring member 50b on the upper surface side of the solar cell 41. Concentration on the surface portion of the solar cell 41 is suppressed.
  • the defective solar cell 44 is positioned in the replacement solar cell 42 in which the wiring member 50d is disposed on the upper surface side and the wiring member 50e is disposed on the lower surface side. Insert at the position. At this time, the end of the wiring member 50d on the arrow Y2 direction side is disposed at a position away from the end of the replacement solar cell 42 on the arrow Y2 direction side by a distance L1 (about 1 mm) in the arrow Y1 direction. Then, as shown in FIG.
  • the wiring material 50c and the wiring material 50d are soldered on the lower surface side of the solar cell 41 in a state where the wiring material 50d is superimposed on the wiring material 50c from the lower side (Z2 side) of the wiring material 50c. Connect by 80.
  • the wiring member 50e and the wiring member 50f are connected to the lower surface side of the replacement solar cell 42 by the solder 80 in a state where the wiring member 50f is overlapped on the wiring member 50e from the lower side (Z2 side) of the wiring member 50e.
  • the filler 29 and the front cover 21 are sequentially laminated on the upper surface side (arrow Z1 direction side) of the solar cell group 28, and the filler 29 on the lower surface side (arrow Z2 direction side). And the back cover 22 are laminated in order. Thereafter, the front surface side cover 21 is placed on the stage, and laminating is performed by applying pressure from the rear surface side cover 22 side (arrow Z2 direction side).
  • the end of the wiring member 50c on the arrow Y2 direction side is arranged closer to the arrow Y1 direction side than the end of the wiring member 50b on the arrow Y2 direction side. Based on the fact that it is possible to receive pressure at a plane portion formed with a length of about 2 mm in the vicinity of the end of the wiring member 50b and to receive pressure from the upper surface side by the wiring member 50d. The pressure is suppressed from concentrating on the surface portion of the solar cell 41.
  • the end of the wiring member 50e on the arrow Y2 direction side is arranged closer to the arrow Y1 direction side than the end of the wiring member 50d on the arrow Y2 direction side, whereby pressure from the lower surface side is applied to the end of the wiring member 50d.
  • the replacement solar cell 42 Concentration of pressure on the surface portion is suppressed. Thereby, the solar cell panel 2 is formed.
  • the metal frame 4 (see FIGS. 1 and 2) is disposed on the side surface of the solar cell panel 2.
  • the end of the wiring member 50c on the lower surface side of the solar cell 41 on the arrow Y2 direction side is closer to the arrow Y1 direction side than the end of the wiring member 50b on the arrow Y2 direction side.
  • the wiring material 50b is present in the portion on the upper surface side of the solar cell 41 corresponding to the portion where the end of the wiring material 50c on the arrow Y2 direction side is disposed. Even when pressure is applied to the wiring member 50c, the pressure applied to the wiring member 50c can be received at the end of the wiring member 50b on the arrow Y2 direction side or in the plane portion near the end of the wiring member 50b.
  • the wiring material 50d is connected to the wiring material 50c on the lower surface side of the solar cell 41, the pressure applied to the wiring material 50b from the upper surface side can be received by the wiring material 50d connected to the wiring material 50c.
  • the pressure can be prevented from concentrating on the surface portion of the solar cell 41 corresponding to the end of the wiring member 50c on the arrow Y2 direction side. Thereby, it can suppress that a crack, a chip
  • the distance (distance L2) between the end of the wiring member 50c on the arrow Y2 direction side and the side surface of the solar cell 41 on the arrow Y2 direction side is set to about 3 mm.
  • the distance between the end of the material 50b on the arrow Y2 direction side and the side surface on the arrow Y2 direction side of the solar cell 41 (distance L1: about 1 mm) is increased by about 2 mm, and the thickness t (about 100 ⁇ m of the solar cell 41). ).
  • interval (distance L2) between the edge part of the arrow Y2 direction side of the wiring material 50c and the side surface of the arrow Y2 direction side of the solar cell 41 becomes large too much, and the surface of the solar cell 41 in which the wiring material 50c is not arrange
  • the pressure from the lower surface side of the solar cell 41 can be more reliably received in the plane portion formed with a length of about 2 mm in the vicinity of the end of the wiring member 50b on the arrow Y2 direction side.
  • the pressure from the upper surface side can be received by the wiring member 50d, it is possible to effectively suppress the pressure from being concentrated on the surface portion of the solar cell 41. Further, by making the distance L2 larger than the thickness t of the solar cell 41, it is possible to suppress the difficulty in joining the wiring member 50c and the solar cell 41 near the side surface of the solar cell 41 on the arrow Y2 direction side. In addition, the concentration of pressure on the surface of the solar cell 41 can be further suppressed.
  • the end on the arrow Y2 direction side of the wiring member 50e located on the lower surface side of the replacement solar cell 42 is indicated by an arrow from the end on the arrow Y2 direction side of the wiring member 50d. It arranged on the Y1 direction side.
  • the wiring member 50f is connected to the wiring member 50e on the lower surface side of the replacement solar cell 42, whereby the pressure applied to the wiring member 50d from the upper surface side is received by the wiring member 50f connected to the wiring member 50e.
  • the end on the arrow Y2 direction side of the wiring member 50c located on the lower surface side of the solar cell 41 is in the direction of the arrow Y1 rather than the end of the wiring member 50b on the arrow Y2 direction side.
  • the end of the wiring member 50e located on the lower surface side of the replacement solar cell 42 on the arrow Y2 direction side is arranged closer to the arrow Y1 direction side than the end of the wiring member 50d on the arrow Y2 direction side. .
  • the thickness t of the solar cell 41 in the Z direction is set to about 100 ⁇ m.
  • the wiring member 50c and the wiring member 50d are connected in a state where the wiring member 50d is overlapped (overlapped) below the wiring member 50c (on the Z2 side).
  • the wiring member 50e and the wiring member 50f were connected in a state where the wiring member 50f was overlapped below the wiring member 50e (Z2 side).
  • the wiring material 50d of the replacement solar cell 42 inserted after the defective solar cell 44 is easily overlapped with the wiring material 50c after the cutting of the solar cell 41 originally provided in the solar cell group 28. be able to.
  • the wiring material 50f after the cutting of the solar cell 43 originally provided in the solar cell group 28 can be easily overlapped with the wiring material 50e of the replacement solar cell 42.
  • the portion where the wiring member 50c and the wiring member 50d overlap each other and the portion where the wiring member 50e and the wiring member 50f overlap each other can be easily connected with solder or the like.
  • the filler 29 and the surface side cover 21 are sequentially laminated on the upper surface side (arrow Z1 direction side) of the solar cell group 28, and on the lower surface side (arrow Z2 direction side).
  • the filler 29 and the back surface side cover 22 were laminated in order.
  • the front surface side cover 21 was placed on the stage and laminated by applying pressure from the rear surface side cover 22 side (arrow Z2 direction side).
  • the distance L1 (the end of the wiring member arranged on the upper surface side of the solar cell and the solar cell)
  • the distance L2 (space between the side of the battery) and the distance L2 (space between the end of the wiring member arranged on the lower surface side of the solar battery and the side of the solar battery) are equal or the distance L2 is greater than the distance L1.
  • the folding correction and the lamination process were performed. Then, the difficulty of cracking the solar cell in the folding correction and the rate of occurrence of cracking of the solar cell that occurred in the lamination were measured.
  • Example 1 the distance L1 was set to 1 mm and the distance L2 was set to 3 mm.
  • Example 2 the distance L1 was 3 mm, and the distance L2 was 5 mm. That is, in Example 1 and 2, the space
  • Example 3 the distance L1 was set to 1 mm and the distance L2 was set to 1 mm.
  • Example 4 the distance L1 was 3 mm, and the distance L2 was 3 mm. That is, in Example 3 and 4, the space
  • the distance (distance L1) between the portion and the side surface of the solar cell was made equal.
  • the distance L1 was 3 mm and the distance L2 was 1 mm. That is, unlike Examples 1 to 4, in the comparative example, the distance (distance L2) between the end of the wiring member arranged on the lower surface side of the solar cell and the side surface of the solar cell is arranged on the upper surface side of the solar cell. It was made smaller than the space
  • a circle ( ⁇ ) indicates that the solar cell was not substantially cracked, and a triangle ( ⁇ ) indicates a solar cell crack. Indicates that some have occurred, and a cross mark ( ⁇ ) indicates that cracking has occurred in all the solar cells.
  • the solar cell was hardly cracked. In Examples 3 and 4, the solar cell was somewhat cracked.
  • the comparative example cracks occurred in all the solar cells.
  • the distance L2 (the distance between the end of the wiring member disposed on the lower surface side of the solar cell and the side surface of the solar cell) is changed to the distance L1 (the end of the wiring member disposed on the upper surface side of the solar cell and the solar cell).
  • the solar cell is cracked at the time of the folding correction as compared with the case where the distance L2 is made equal to the distance L1 (Examples 3 and 4). It has been found that it is possible to further suppress the occurrence of. This is because the pressure from the lower surface side can be received in the plane portion near the end portion of the wiring material arranged on the upper surface side of the solar cell, so that the end portion of the wiring material arranged on the upper surface side of the solar cell This is considered to be because it was possible to further suppress the concentration of pressure on the surface of the corresponding solar cell.
  • the total number of wiring members indicates the number of connected wiring members. Further, the number of positions where cracks occur indicates the number of cracks at the position where the wiring material of the solar cell is disposed. Further, the crack occurrence rate indicates the ratio of the number of wiring members arranged at the position where the solar cell is cracked to the total number of wiring members.
  • Example 1 In the time of laminating, as shown in FIG. 16, in Examples 1 and 2 in which the distance L2 was larger than the distance L1, no crack was generated, and the crack occurrence rate was 0%. On the other hand, in Example 3 in which the distance L2 was the same as the distance L1 (1 mm), the crack occurred only in one wiring material, and the crack occurrence rate was 6.7%. In Example 4 in which the distance L2 was the same as the distance L1 (3 mm), the cracks occurred in four wiring members, and the crack generation rate was 26.7%.
  • the distance L2 (the distance between the end of the wiring member disposed on the lower surface side of the solar cell and the side surface of the solar cell) is changed to the distance L1 (the end of the wiring member disposed on the upper surface side of the solar cell and the solar cell).
  • the solar cell is somewhat cracked during lamination, while the distance L2 is made larger than the distance L1 (Examples 1 and 2).
  • the pressure from the lower surface side can be received in the plane portion near the end portion of the wiring material arranged on the upper surface side of the solar cell, so that the end portion of the wiring material arranged on the upper surface side of the solar cell.
  • the pressure from the upper surface side can be further suppressed from being concentrated on the surface portion of the corresponding solar cell, and the pressure is received by the wiring material connected to the wiring material arranged on the lower surface side of the solar cell. Therefore, it is considered that it was possible to further suppress the pressure from being concentrated on the surface portion of the solar cell corresponding to the end portion of the wiring member arranged on the lower surface side of the solar cell.
  • both the distances L1 and L2 are 1 mm (Example 3)
  • the solar cell is more cracked during the lamination process than when the distances L1 and L2 are both 3 mm (Example 4). It turned out to be difficult. This is considered that when pressure is applied from the lower surface side, the solar cell from the side surface to the end of the wiring member is bent and deformed with the end of the wiring member as a fulcrum. At this time, by reducing the distance from the side surface of the solar cell to the end of the wiring member, the moment based on the bending deformation can be reduced, so that it is considered that the solar cell is less likely to be cracked during lamination. .
  • the output reduction rate is 0.00%.
  • the output reduction rate was 0.00% (0.002%).
  • the output reduction rate was 0.01%.
  • the output reduction rate was 0.03%.
  • the output reduction rate was 0.06% (0.058%).
  • the output reduction rate was 0.10% (0.098%).
  • the reason why the output decreases as the distance L2 increases is considered to be that the current collection efficiency deteriorates due to an increase in the surface area of the solar cell on which the wiring member is not disposed.
  • the distance L2 is larger than 6 mm, it can be estimated from the graph of FIG. 21 that the output decrease rate increases in a quadratic function as the distance L2 is increased.
  • the output reduction rate exceeds 0.10%, it is considered that the performance of the solar cell is insufficient and unacceptable, and therefore it has been found that the distance L2 is preferably 6 mm or less.
  • replacement work may be performed in a plurality of solar cell groups.
  • the present invention is not limited thereto.
  • the present invention is also applicable to a case where a pair of wiring members provided to adjacent solar cells and arranged to overlap on the lower surface side of one solar cell are connected to each other. Is applicable.
  • the case where the pressure is applied to the solar cell is shown as an example of the folding correction and the laminating process, but the present invention is not limited to this.
  • the present invention is not limited to this.
  • even when a pressure is applied during soldering it is possible to prevent the solar cell from being cracked, chipped and cracked.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • 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)
  • Photovoltaic Devices (AREA)

Abstract

La présente invention concerne un module de cellules solaires qui se divise en cellules solaires lors de l'application d'une pression, supprime la production d'ébréchures et de fissures, et peut accroître le rendement. Dans ce module de cellules solaires, l'extrémité du côté d'une seconde cellule solaire d'un second matériau de câblage est disposée de manière soit à correspondre plus au moins à l'extrémité du côté de la seconde cellule solaire d'un premier matériau de câblage d'un point de vue planaire, soit pour être positionnée sur la face arrière depuis le côté de la seconde cellule solaire par rapport à l'extrémité du côté de la seconde cellule solaire du premier matériau de câblage.
PCT/JP2011/051752 2010-01-29 2011-01-28 Module de cellules solaires et procédé de production de module de cellules solaires WO2011093450A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-017586 2010-01-29
JP2010017586A JP5377347B2 (ja) 2010-01-29 2010-01-29 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

Publications (1)

Publication Number Publication Date
WO2011093450A1 true WO2011093450A1 (fr) 2011-08-04

Family

ID=44319430

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/051752 WO2011093450A1 (fr) 2010-01-29 2011-01-28 Module de cellules solaires et procédé de production de module de cellules solaires

Country Status (2)

Country Link
JP (1) JP5377347B2 (fr)
WO (1) WO2011093450A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2752888A4 (fr) * 2011-08-31 2015-11-04 Sanyo Electric Co Procédé permettant de fabriquer un module solaire et module solaire
EP2752889B1 (fr) * 2011-08-31 2018-11-28 Panasonic Intellectual Property Management Co., Ltd. Procédé de fabrication de module de piles solaires
KR101820103B1 (ko) * 2014-10-27 2018-01-18 엘지전자 주식회사 태양전지 모듈, 그 리페어 방법 및 리페어 장치
JP2016111853A (ja) * 2014-12-08 2016-06-20 オーナンバ株式会社 太陽電池モジュール
WO2017056354A1 (fr) * 2015-09-30 2017-04-06 パナソニックＩｐマネジメント株式会社 Module solaire et procédé de fabrication de module solaire
JP2017228636A (ja) * 2016-06-22 2017-12-28 シャープ株式会社 太陽電池セル及び太陽電池モジュール
JP2020096090A (ja) * 2018-12-13 2020-06-18 デクセリアルズ株式会社 太陽電池

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11214733A (ja) * 1998-01-29 1999-08-06 Kyocera Corp 太陽電池装置
JP2002222978A (ja) * 2000-11-21 2002-08-09 Sharp Corp 太陽電池モジュール、交換用太陽電池セル、及び太陽電池セルの交換方法
JP2003332608A (ja) * 2002-05-09 2003-11-21 Canon Inc 太陽電池アレイの補修方法
JP2004281797A (ja) * 2003-03-17 2004-10-07 Kyocera Corp 太陽電池モジュール
JP2006253497A (ja) * 2005-03-11 2006-09-21 Mitsubishi Electric Corp インターコネクタ及び太陽電池モジュール

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005251960A (ja) * 2004-03-04 2005-09-15 Mitsubishi Electric Corp 太陽電池パネルの修理方法及びその製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11214733A (ja) * 1998-01-29 1999-08-06 Kyocera Corp 太陽電池装置
JP2002222978A (ja) * 2000-11-21 2002-08-09 Sharp Corp 太陽電池モジュール、交換用太陽電池セル、及び太陽電池セルの交換方法
JP2003332608A (ja) * 2002-05-09 2003-11-21 Canon Inc 太陽電池アレイの補修方法
JP2004281797A (ja) * 2003-03-17 2004-10-07 Kyocera Corp 太陽電池モジュール
JP2006253497A (ja) * 2005-03-11 2006-09-21 Mitsubishi Electric Corp インターコネクタ及び太陽電池モジュール

Also Published As

Publication number Publication date
JP2011159646A (ja) 2011-08-18
JP5377347B2 (ja) 2013-12-25

Similar Documents

Publication Publication Date Title
WO2011093450A1 (fr) Module de cellules solaires et procédé de production de module de cellules solaires
JP5147672B2 (ja) 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
EP3136448B1 (fr) Barres omnibus photovoltaïques formées
EP2587550B1 (fr) Module de cellules solaires et procédé de fabrication de module de cellules solaires
TW201444103A (zh) 具有特定電極架構之光伏電池元件
CN106206766A (zh) 太阳能电池单元、电池片阵列、电池组件及其制备方法
EP2752888A1 (fr) Procédé permettant de fabriquer un module solaire et module solaire
CN110165007B (zh) 一种叠瓦电池串的连接方法及叠瓦组件的制造方法
JP6519812B2 (ja) 太陽電池モジュール
CN102097511B (zh) 分段焊接的封装组件
CN114220879A (zh) 一种无主栅线电极的叠瓦电池组件及其制备方法
US9490382B2 (en) Solar module and manufacturing method therefor
JP2008300449A (ja) 太陽電池モジュール及びその製造方法
US20100263706A1 (en) Solar cell module and method for manufacturing solar cell module
CN101937936B (zh) 一种太阳能电池组件
JP2017533597A (ja) 太陽電池アレイ、太陽電池モジュール、及びこれらの製造方法
CN114203836A (zh) 一种异质结叠瓦光伏电池组件及其制备方法
JP5556935B2 (ja) 太陽電池モジュールの製造方法
JP2010135698A (ja) 太陽電池、太陽電池モジュール及び太陽電池の交換方法
CN211957654U (zh) 一种大尺寸太阳能电池光伏组件
CN111129175A (zh) 双面电池组件结构
US20240170594A1 (en) Solar cell string and method for producing a solar cell string
CN115241294A (zh) 一种光伏叠瓦组件及其制备方法
CN212625609U (zh) 一种光伏组件
CN210743958U (zh) 一种大尺寸太阳能电池的光伏组件

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: 11737160

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: 11737160

Country of ref document: EP

Kind code of ref document: A1