WO2022210270A1 - 太陽電池モジュールの製造方法及びその製造方法を用いて製造された太陽電池モジュール - Google Patents
太陽電池モジュールの製造方法及びその製造方法を用いて製造された太陽電池モジュール Download PDFInfo
- Publication number
- WO2022210270A1 WO2022210270A1 PCT/JP2022/014029 JP2022014029W WO2022210270A1 WO 2022210270 A1 WO2022210270 A1 WO 2022210270A1 JP 2022014029 W JP2022014029 W JP 2022014029W WO 2022210270 A1 WO2022210270 A1 WO 2022210270A1
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- WIPO (PCT)
- Prior art keywords
- laminate
- cell module
- solar cell
- tape
- manufacturing
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims description 22
- 238000007789 sealing Methods 0.000 claims abstract description 76
- 229920005989 resin Polymers 0.000 claims abstract description 62
- 239000011347 resin Substances 0.000 claims abstract description 62
- 238000003475 lamination Methods 0.000 claims abstract description 15
- 125000006850 spacer group Chemical group 0.000 claims description 39
- 230000002093 peripheral effect Effects 0.000 claims description 30
- 238000010030 laminating Methods 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 6
- 238000013022 venting Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 19
- 239000000463 material Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- 229920006124 polyolefin elastomer Polymers 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
-
- 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 manufacturing method and a solar cell module manufactured using the manufacturing method.
- a laminate is formed by laminating a first protective substrate, a first sealing resin film, a solar cell, a second sealing resin film, and a second protective substrate, and the laminate is placed in a laminator.
- a method of manufacturing a solar cell module in which the first sealing resin film and the second sealing resin film are melted and integrated by heating and pressurizing at . During this production, the melted sealing resin may protrude from the end face of the laminate.
- a resin stop film for suppressing the amount of protrusion of the sealing resin is arranged so as to cover the end surface of the laminate from the side surface of the first protective substrate and extend over the side surface of the second protective substrate. Then, the sealing resin protruding from the end face of the laminate can be reliably cut off by a blade member (see, for example, Patent Document 1).
- the present invention provides a method for manufacturing a solar cell module that can eliminate troublesome work by preventing the sealing resin from protruding from the end face of the laminate, and a method for manufacturing the same.
- An object of the present invention is to provide a solar cell module with a
- a method for manufacturing a solar cell module according to the present invention includes a plurality of solar cells having a front surface and a back surface, which are arranged between a light-receiving surface-side cover layer and a back surface-side cover layer, at least one of which is made of glass, and electrically connected to each other.
- the laminating step in order to prevent the sealing resin of the sealing resin layer from protruding from the end face of the laminate, at least the entire stacking direction of the laminate is
- the solar cell module is formed by providing a sealing portion so as to cover the entire area in the outer peripheral direction.
- the sealing portion may be composed of a tape wound around and attached to the outer periphery of the laminate.
- the formation of the integrated solar cell module in the lamination step is performed by vacuuming, and the tape is applied to the portion facing the sealing resin layer. It may have slits or holes for venting.
- the sealing portion may be composed of an annular spacer surrounding the outer circumference of the laminate.
- the formation of the integrated solar cell module in the laminating step is performed by vacuuming, and the spacer protrudes toward the outer peripheral surface side of the laminate.
- a convex portion and a concave portion spaced apart from the outer peripheral surface of the laminate and for releasing gas in the stacking direction may be provided so as to be adjacent to each other in the outer peripheral direction.
- the formation of the integrated solar cell module in the laminating step is performed by vacuuming, and the sealing portion is wrapped around the outer periphery of the laminate. and an annular spacer arranged so as to cover the outer circumference of the tape, and the tape has slits or holes for gas venting in the portion facing the sealing resin layer.
- the spacer is formed so that a protrusion protruding toward the outer peripheral surface of the laminate and a recess spaced apart from the outer peripheral surface of the laminate for releasing gas in the stacking direction are adjacent to each other in the outer peripheral direction.
- a recess in the spacer may be aligned with a slit or hole provided in the tape.
- the present invention may also be a solar cell module manufactured using the method for manufacturing a solar cell module described above.
- FIG. 2 is an exploded perspective view of the solar cell module of the present invention; It is a block diagram which shows the process of manufacturing the same solar cell module.
- FIG. 4 is a cross-sectional view cut in the lateral direction showing a laminate in which components of the same solar cell module are laminated;
- FIG. 3 is a cross-sectional view cut in the longitudinal direction showing a laminate in which components of the same solar cell module are laminated;
- FIG. 4 is a longitudinal view showing a state in which a first tape is applied to one edge of the top surface to cover longitudinal lateral sides of the laminate.
- FIG. 4 is a view from the width direction showing a state in which a first tape is attached to one edge of the upper surface in order to cover the lateral side surfaces in the longitudinal direction of the laminate.
- FIG. 4B is a longitudinal view showing a state in which the first tape is attached to the edges of the lateral side surface and the bottom surface of the laminate from the state of FIG. 4A.
- FIG. 4B is a diagram viewed from the short direction, showing a state in which the first tape is attached to the edge of the lateral side surface and the bottom surface of the laminate from the state of FIG. 4B ;
- 5B is a longitudinal view showing a state in which a first tape is also attached to the other side of the laminate of FIG. 5A;
- FIG. FIG. 5C is a view from the short direction showing a state in which the first tape is also attached to the other side of the laminate of FIG. 5B.
- FIG. 10 is a view from the longitudinal direction showing a state in which a second tape is attached to one edge of the upper surface in order to cover one lateral side surface in the short direction of the laminate.
- FIG. 10 is a diagram viewed from the width direction showing a state in which a second tape is attached to one edge of the upper surface in order to cover one side surface of the laminate in the width direction.
- FIG. 7B is a longitudinal view showing a state in which the second tape is attached to the lateral side surface of the laminate in the short-side direction from the state of FIG. 7A ;
- FIG. 7C is a diagram viewed from the width direction, showing a state in which the second tape is attached to the lateral side surface of the laminate in the width direction from the state of FIG. 7B.
- FIG. 8B is a longitudinal view showing a state in which the lower end of the second tape is attached to the edge of the lower surface of the laminate from the state of FIG. 8A;
- FIG. 8C is a view from the short direction showing a state in which the lower end of the second tape is attached to the edge of the lower surface of the laminate from the state of FIG. 8B.
- FIG. 9B is a view from the longitudinal direction showing a state in which the upper and lower portions of the portions protruding from the second tape stack of FIG. .
- FIG. 9B is a view viewed from the lateral direction showing a state in which the upper and lower portions of the portions protruding to the left and right sides from the second tape laminate of FIG.
- FIG. 11B is a longitudinal view showing a state in which a second tape is adhered to cover the other side surface of the laminate in the short direction, similar to FIG. 11A.
- FIG. 11B is a view from the width direction showing a state in which the other side surface in the width direction of the laminate is covered by attaching a second tape, similar to FIG. 11B.
- FIG. 10 is a view from the longitudinal direction showing a state in which spacers are arranged so as to cover the outer periphery of a laminate whose outer periphery is covered with four tapes;
- FIG. 10 is a diagram viewed from the width direction showing a state in which spacers are arranged so as to cover the outer periphery of a laminate whose outer periphery is covered with four tapes;
- FIG. 13B is a longitudinal view showing a state in which a solar cell module is manufactured by performing a lamination step in the state of FIG. 13A;
- FIG. 13B is a view from the short direction showing a state in which a solar cell module is manufactured by performing a lamination step in the state of FIG. 13B;
- 4 is a plan view of four tapes; It is a front view of a 1st tape. It is a front view of a 2nd tape. It is a top view of a spacer. It is the figure which looked at the long side part of the spacer from the inside. It is the figure which looked at the short side part of the spacer from the inside.
- the solar cell module includes, from the bottom, a first plate-shaped member 1 as a light-receiving surface side cover layer, a first sealing resin material 2 as a first sealing resin layer, and six units.
- a solar cell string 3 a plurality of wiring members 4 for electrically connecting the six solar cell strings 3, a second sealing resin material 5 which is a second sealing resin layer, and a back side cover layer. a certain second plate member 6;
- the first plate-like member 1 is made of a rectangular plate-like transparent glass.
- the second plate-like member 6 is made of transparent glass having substantially the same size and thickness as the first plate-like member 1 .
- the first plate-like member 1 and the second plate-like member 6 are made of glass, but one of them may be made of a material other than glass, such as a synthetic resin, in a sheet shape. Also, the second plate member 6 does not necessarily have to be transparent.
- the first sealing resin material 2 is made of a transparent sealing resin material that has substantially the same size as the first plate member 1 and is formed into a sheet.
- the second sealing resin material 5 is composed of a transparent sealing resin material formed in a sheet shape with substantially the same size as the second plate member 6. ing.
- Materials for the first sealing resin material 2 and the second sealing resin material 5 include EVA (ethylene-vinyl acetate copolymer resin), POE (polyolefin elastomer), PVB (polyvinyl butyral), ionomer, and the like.
- Each solar battery string 3 is configured by connecting a plurality of solar battery cells 31 in series, and is configured in a rectangular shape elongated in the lateral direction.
- a plurality of photovoltaic cells 31 are connected by a single ring connection.
- the busbar electrodes of the lower solar cell 31 are arranged so that the backside busbar electrodes of the upper solar cell 31 overlap with the busbar electrodes of the lower solar cell 31, and the overlapping portions of the electrodes are electrically conductive. It is electrically connected through the member.
- the plurality of solar cells 31 are connected in series to form the solar cell string 3 .
- the shingling connection has been described, but a connection other than the shingling connection, that is, the conductive portions of the plurality of solar cells 31 arranged in the short-side direction may be connected with a conductive wire.
- the method for manufacturing a solar cell module includes a laminate forming step 7 for forming a laminate by laminating a plurality of members shown in FIG. a lamination step 8 in which the body is heated and pressed to form an integrated solar cell module.
- 3A and 3B show a substantially rectangular parallelepiped layered body 9 layered in the layered body forming step 7.
- FIG. 3A is a cross-sectional view of the laminate 9 cut in the lateral direction
- FIG. 3B is a cross-sectional view of the laminate 9 cut in the longitudinal direction.
- Formation of the integrated solar cell module that forms the integrated solar cell module in the lamination step 8 is performed by evacuation.
- the lamination process covers at least the entire area in the lamination direction of the laminate 9 and the entire area in the outer peripheral direction.
- forming a solar cell module by providing a sealing portion 10 (see FIG. 2) so as to extend over the entire surface.
- the sealing resins of the sealing resin layers 2 and 5 melted by heating and pressurization are to be prevented from protruding from the end surfaces of the laminate 9, so that the end surfaces of the laminate 9 are covered at least over the entire area in the stacking direction.
- a step of providing the sealing portion 10 is included.
- the sealing portion 10 is composed of a tape wound around and attached to the outer periphery of the laminate 9 .
- the sealing portion 10 is composed of four rectangular tapes 11, 12, 13, and 14 covering the four outer peripheral surfaces of the laminate 9, respectively.
- the four tapes 11, 12, 13, and 14 are masking tapes made of a resin film having an adhesive layer formed on the back surface, and cover the pair of first surfaces 9A and 9B in the longitudinal direction of the laminate 9.
- the first tapes 11 and 12 see FIGS. 6A and 6B
- the second tapes 13 and 14 see FIGS. 12A and 12B for covering the pair of second surfaces 9C and 9D in the lateral direction of the laminate 9 ), and
- the first tapes 11, 12 are configured to have the same dimension in the horizontal direction as the first surfaces 9A, 9B, and the dimension in the vertical direction is the same as that of the first surface 9A. , 9B in the vertical direction.
- the first tapes 11 and 12 can cover the entire lateral direction of the first surfaces 9A and 9B of the laminate 9, and extend vertically from the upper and lower ends of the first surfaces 9A and 9B, respectively.
- An upper surface edge 91 on the first surface 9A or 9B side of the upper surface of 9 and a lower surface edge 92 on the lower surface of the lower surface on the first surface 9A or 9B side can be covered. As shown in FIG.
- slits (notches) S1, S2, and S3 of the same length and long in the longitudinal direction are formed at intervals in the longitudinal direction at the central portions of the first tapes 11 and 12 in the vertical direction. . Damage to the solar cell module can be prevented by discharging the gas generated during the manufacture of the solar cell module through these slits S1, S2, and S3.
- the distance L1 from the slits S1, S1 located at both longitudinal ends of these slits S1, S2, S3 to both ends of the first tapes 11, 12 is set to be the shortest, and the distance L1 from the slits S1, S1 located at both longitudinal ends is set to be the shortest.
- the distance L2 between the slits S2, S2 adjacent in the longitudinal direction is set to be the second shortest. Longest set. With such a configuration, it is possible to reliably discharge gas at the corners of the solar cell module.
- the slits S1, S2 and S3 are not drawn on the first tapes 11, 12 and the second tapes 13, 14 of FIGS. 5A, 5B to 14A, 14B. 4A and 4B to 14A and 14B are drawn only with lines of the rectangular outline.
- the second tapes 13, 14 are configured to have a lateral dimension longer than the lateral dimension of the second surfaces 9C, 9D, and a vertical dimension. is longer than the vertical dimension of the second surfaces 9C and 9D.
- the second tapes 13 and 14 protrude outward in the left and right direction from the left and right ends of the second surfaces 9C and 9D of the laminate 9 and extend vertically from the upper and lower ends of the second surfaces 9C and 9D, respectively.
- the upper surface edge 93 of the upper surface of the body 9 on the side of the second surfaces 9C and 9D and the lower surface edge 94 of the lower surface on the side of the second surfaces 9C and 9D can be covered.
- slits (notches) S1 and S2 having the same length and being long in the longitudinal direction are formed at intervals in the longitudinal direction at the central portions of the second tapes 13 and 14 in the vertical direction. Damage to the solar cell module can be prevented by discharging the gas generated during the manufacture of the solar cell module through the slits S1 and S2.
- the distance L1 from the slits S1, S1 positioned at both ends in the longitudinal direction of these slits S1, S2 to both ends of the second tapes 13, 14 is set to the same distance as in the case of the first tapes 11, 12, and the slits
- the distance L3 from S1, S1 to the adjacent slits S2, S2 and the distance L3 between the remaining slits S2, S2 (the same distance as the distance L3 between the slits S3, S3 of the first tapes 11, 12) It is set longer than the distance L1. As a result, gas can be reliably discharged from the corners of the solar cell module.
- the sealing portion 10 of this embodiment is a square annular shape arranged so as to surround the outer periphery of the tapes 11, 12, 13, and 14 around which the laminate 9 is wound. is provided with spacers 15 (see FIGS. 16A, 16B, and 16C) made of metal (for example, aluminum). As shown in FIG. 16B , the inside of the long-side portion of the spacer 15 is separated from the outer peripheral surface of the laminate 9 with the protrusions 15A, 15B, and 15C projecting toward the outer peripheral surface of the laminate 9 and extending in the stacking direction. A large number of recesses 15D for extracting (discharging) gas generated during manufacturing of the solar cell module are provided adjacent to each other in the outer peripheral direction.
- the length H1 in the longitudinal direction of the first protrusions 15A, 15A located at both ends in the longitudinal direction of the part on the long side of the spacer 15 is set to be the shortest.
- the length H2 in the longitudinal direction of the second protrusions 15B, 15B adjacent to 15A is set to be the second shortest, and the length H3 in the longitudinal direction of the remaining third protrusion 15C is set to be the longest. This ensures that gas can be discharged from the corners of the solar cell module.
- the length H1 in the longitudinal direction of the first protrusions 15A, 15A positioned at both ends in the longitudinal direction of the inner portion of the spacer 15 on the short side side is set short.
- the length H3 in the longitudinal direction of the first protrusions 15A, 15A located at both ends and the third protrusions 15C, 15C adjacent to each other (the same length as the length H3 on the long side of FIG. 16B) is equal to the length H1. is set longer than This ensures that gas can be discharged from the corners of the solar cell module. Further, the recessed portion 15D of the uneven portion is formed so as to match the slits S1, S2, S3 provided in the tapes 11, 12, 13, 14. As shown in FIG.
- the spacer 15 configured as described above on the outer periphery of the laminate 9 around which the four tapes 11, 12, 13, and 14 are wound, the tapes 11 and 12 are separated by the protrusions 15A, 15B, and 15C of the spacer 15. , 13 and 14 are prevented from expanding radially outward, gas generated when the sealing resin is melted passes through the slits S1, S2 and S3 provided in the tapes 11, 12, 13 and 14 and passes through the recessed portion 15D of the spacer. , it can be reliably ejected to the outside in the vertical direction through the recess 15D.
- the length of the slits S1, S2, S3 and the width of the recess 15D in the horizontal direction are set to be the same or substantially the same, or the width of the recess 15D in the horizontal direction is longer than the length of the slits S1, S2, S3. It is preferable to set
- FIG. 1 the parts shown in FIG. 1 are laminated as shown in FIGS. 3A and 3B to form the laminated body 9 .
- Four tapes 11 , 12 , 13 , 14 cover four outer peripheral surfaces of the laminated body 9 .
- the upper end portion of the first tape 11 is attached to the upper surface edge portion 91 at one end portion in the width direction of the upper surface of the laminate 9 (see FIGS. 4A and 4B).
- the first surface 9A which is one of the first surfaces 9A and 9B, which are a pair of lateral side surfaces in the longitudinal direction of the laminate 9, can be covered.
- the first tape 11 is attached to the first surface 9A of the laminate 9 and the lower surface edge portion 92 at one end of the lower surface in the transverse direction (see FIGS. 5A and 5B).
- the other first surface 9B of the pair of first surfaces 9A and 9B in the longitudinal direction of the laminate 9 is covered with the first tape 12 in the same manner as described above (see FIGS. 6A and 6B).
- the upper end portion of the second tape 13 is attached to the upper surface edge portion 93 at one longitudinal end portion of the upper surface of the laminate 9 (see FIGS. 7A and 7B).
- one of the second surfaces 9C and 9D which are a pair of lateral side surfaces of the laminate 9 in the short direction, can be covered.
- both ends in the longitudinal direction of the second tape 13 overlap the upper ends of the first tapes 11 and 12 that were previously attached, and both ends in the longitudinal direction of the second tape 13 protrude outward in the longitudinal direction. It has become.
- the second tape 13 in the state of FIGS. 7A and 7B is attached to one second surface 9C of the laminate 9 (see FIGS. 8A and 8B). Subsequently, the second tape 13 in the state shown in FIGS. 8A and 8B is attached to the lower surface edge portion 94 of the lower surface of the laminate 9 (see FIGS. 9A and 9B). At this time, the upper portion 13A and the lower portion 13B at both ends in the longitudinal direction of the second tape 13 are attached to the upper and lower ends of the previously attached first tapes 11 and 12, respectively.
- both longitudinal ends of the second tape 13 protruding from both lateral ends of the laminate 9 are attached to the first surfaces 9A and 9B, which are both lateral sides in the longitudinal direction of the laminate 9, respectively.
- the upper portion 13A and the lower portion 13B at one end of the longitudinal direction ends of the second tape 13 are attached to one of the first surfaces 9A and 9B of the laminate 9, and then , the upper part 13A and the lower part 13B of the other end of the second tape 13 in the longitudinal direction are attached to the other first surface 9B of the laminate 9 (see FIGS. 10A and 10B).
- upper and lower portions 13C and 13D are formed by folding the upper and lower ends of each of the longitudinal ends of the second tape 13 into a substantially trapezoidal shape when viewed from the short side direction, as shown in FIG. 10B.
- the remaining second tape 14 is attached to the other second surface 9D of the laminate 9 in the same manner as described above, and the operation of attaching the four tapes 11, 12, 13, and 14 is completed (FIGS. 12A and 12B). 12B).
- the stack 9 masked with four tapes 11, 12, 13, 14 is put into a vacuum laminator (not shown), and the spacer 15 is placed on the stack 9. Arranged on the outer circumference (see FIGS. 13A and 13B). After this arrangement, the laminated body 9 is heated and pressurized in a vacuumed state to form an integrated solar cell module 16 (see FIGS. 14A and 14B).
- FIGS. 14A and 14B see FIGS.
- the first sealing resin material 2 and the second sealing resin material 5 are melted and the thickness in the vertical direction is reduced.
- the sealing portion 10 By providing the sealing portion 10 in this way, it is possible to prevent the sealing resin that melts when the laminate 9 is heated and pressurized in a vacuumed state from protruding from the end surface (peripheral surface) of the laminate 9. Therefore, troublesome work such as cutting off the protruding sealing resin with a blade member can be eliminated.
- the sealing portion 10 includes tapes 11 , 12 , 13 , 14 and spacers 15 for masking at least the end faces (peripheral faces) of the laminate 9 . Therefore, if the tapes 11, 12, 13, and 14 expand more than necessary when the laminated body 9 is heated and pressurized in a vacuumed state, the spacer 15 can prevent this expansion, so that the tapes can be melted more reliably. It is possible to prevent the sealing resin from protruding from the end face (peripheral face) of the laminate 9 . In addition, it is also possible to provide only one of the tapes 11, 12, 13, 14 and the spacer 15 for implementation.
- the sealing portion may be formed by forming a spacer so that the size of the diameter can be adjusted, and attaching an annular tape having an adhesive layer on both sides to the inner side of the spacer to integrate the sealing portion.
- a spacer whose inner diameter is adjusted to be larger than the outer diameter of the laminate is placed on the outer periphery of the laminate, and the inner diameter of the spacer is reduced after placement, so that the inner tape of the spacer adheres to the outer peripheral surface of the laminate.
- the sealing portion can be arranged by sticking.
- the order of attaching the tapes and the method of attaching the tapes shown in the embodiment can be freely changed.
- the present invention may be a solar cell module manufactured using the manufacturing method described above.
- the sealing portion 10 by providing the sealing portion 10 so as to cover the entire area in the stacking direction of the laminate 9 and extend over the entire area in the outer peripheral direction, the sealing resin that melts when the laminate 9 is heated and pressurized does not cover the laminate 9. Protrusion from the end face can be prevented. Therefore, troublesome work such as cutting off the protruding sealing resin with a blade member can be eliminated.
- the tapes 11, 12, 13, 14 are provided with gas venting slits S1, S2, S3 or holes, the gas generated when the sealing resin is melted can pass through the slits S1, S2, S3 or holes. Can be discharged to the outside.
- the spacer 15 has an uneven portion, the gas generated when the sealing resin is melted can be discharged to the outside through the concave portion 15D of the uneven portion.
- the sealing portion 10 includes tapes 11, 12, 13, and 14 that are wound around and attached to the outer periphery of the laminate 9, and an annular shape that is arranged to cover the outer periphery of the tapes 11, 12, 13, and 14.
- the provision of the spacer 15 prevents the tapes 11, 12, 13, and 14 from expanding outward when the sealing resin that melts when the laminate 9 is heated and pressurized protrudes outward from the end surfaces of the laminate 9.
- the protrusions 15A, 15B, and 15C of the spacer 15 can prevent this.
- the recesses 15D of the spacer 15 are aligned with the slits S1, S2, S3 or the holes provided in the tapes 11, 12, 13, 14, the gas generated when the sealing resin is melted , 14 to the recessed portion 15D of the spacer 15 and then reliably discharged to the outside through the recessed portion 15D.
- the tape wound around the outer periphery of the laminate has slits for gas release, but a plurality of holes with a size that prevents passage of the molten sealing resin may be formed.
- the tape is composed of four tapes, it may be composed of one or a plurality of arbitrary number of tapes.
- the tape is attached to the upper surface edges 91 and 93 of the upper surface of the laminate 9 and the lower surface edges 92 and 94 of the lower surface of the laminate 9 .
- the tape may be attached only to the end face (peripheral face).
- the spacer 15 includes the projections 15A, 15B, and 15C projecting toward the outer peripheral surface of the laminate 9 and the recess 15D spaced apart from the outer peripheral surface of the laminate 9 for releasing gas in the stacking direction.
- the concave-convex portions are formed so as to be adjacent to each other in the outer peripheral direction, slits or holes for gas venting may be provided.
- two encapsulation resin members 2 and 5 are provided, but one encapsulation resin member or any number of encapsulation resin members of three or more may be provided. .
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Abstract
Description
Claims (7)
- 少なくとも一方がガラスで構成される受光面側カバー層及び裏面側カバー層間に配置され互いに電気的に接続され、表面及び裏面を有する複数の太陽電池セルを配置し、該複数の太陽電池セルの表裏面のうちの少なくとも一方の面に封止樹脂層を積層して積層体を形成する積層体形成工程と、前記積層体を加熱及び加圧することにより、前記封止樹脂層を溶融して前記受光面側カバー層と前記裏面側カバー層との間に前記複数の太陽電池セルを封止した一体化された太陽電池モジュールを形成するラミネート工程と、を備えた太陽電池モジュールの製造方法であって、
前記ラミネート工程において、前記積層体の端面からの前記封止樹脂層の封止樹脂のはみ出しを防止すべく、少なくとも該積層体の積層方向全域を覆うとともに外周方向全域に亘るように封止部を設けて前記太陽電池モジュールを形成することを特徴とする太陽電池モジュールの製造方法。 - 前記封止部は、前記積層体の外周に巻き付けてられて付着されるテープから構成されていることを特徴とする請求項1に記載の太陽電池モジュールの製造方法。
- 前記ラミネート工程における一体化された太陽電池モジュールの形成は、真空引きすることによって行い、
前記テープは、前記封止樹脂層に面する部分にガス抜き用のスリット又は孔を備えていることを特徴とする請求項2に記載の太陽電池モジュールの製造方法。 - 前記封止部は、前記積層体の外周を囲う環状のスペーサから構成されていることを特徴とする請求項1に記載の太陽電池モジュールの製造方法。
- 前記ラミネート工程における一体化された太陽電池モジュールの形成は、真空引きすることによって行い、
前記スペーサは、前記積層体の外周面側に突出する凸部と該積層体の外周面から離間して積層方向にガスを抜くための凹部とが外周方向で隣り合うように形成される凹凸部を備えていることを特徴とする請求項4に記載の太陽電池モジュールの製造方法。 - 前記ラミネート工程における一体化された太陽電池モジュールの形成は、真空引きすることによって行い、
前記封止部は、前記積層体の外周に巻き付けてられて付着されるテープと、該テープの外周を覆うように配置される環状のスペーサと、を備え、
前記テープは、前記封止樹脂層に面する部分にガス抜き用のスリット又は孔を備え、前記スペーサは、前記積層体の外周面側に突出する凸部と該積層体の外周面から離間して積層方向にガスを抜くための凹部とが外周方向で隣り合うように形成される凹凸部を備え、
前記テープに設けられるスリット又は孔に前記スペーサの凹部が一致していることを特徴とする請求項1に記載の太陽電池モジュールの製造方法。 - 請求項1~6のうちのいずれか1項の太陽電池モジュールの製造方法を用いて製造された太陽電池モジュール。
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