WO2019172258A1 - 太陽電池モジュール、ガラス建材、及び太陽電池モジュールの製造方法 - Google Patents
太陽電池モジュール、ガラス建材、及び太陽電池モジュールの製造方法 Download PDFInfo
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- WO2019172258A1 WO2019172258A1 PCT/JP2019/008645 JP2019008645W WO2019172258A1 WO 2019172258 A1 WO2019172258 A1 WO 2019172258A1 JP 2019008645 W JP2019008645 W JP 2019008645W WO 2019172258 A1 WO2019172258 A1 WO 2019172258A1
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- receiving surface
- light receiving
- solar cell
- surface side
- extending
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- 238000004519 manufacturing process Methods 0.000 title claims description 28
- 239000004566 building material Substances 0.000 title claims description 7
- 239000011521 glass Substances 0.000 title claims description 7
- 239000004065 semiconductor Substances 0.000 claims description 85
- 239000000758 substrate Substances 0.000 claims description 51
- 238000000034 method Methods 0.000 claims description 28
- 238000005452 bending Methods 0.000 claims description 20
- 238000005520 cutting process Methods 0.000 claims description 17
- 230000003746 surface roughness Effects 0.000 claims description 16
- 239000005357 flat glass Substances 0.000 claims description 8
- 230000001678 irradiating effect Effects 0.000 claims description 8
- 238000004040 coloring Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 7
- 229910021417 amorphous silicon Inorganic materials 0.000 description 6
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 229910021419 crystalline silicon Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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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
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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
- H01L31/04—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
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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
- H01L31/04—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
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- 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, a glass building material, and a method for manufacturing a solar cell module.
- Patent Document 1 discloses a daylighting solar cell module that is assumed to be installed on a window glass or the like.
- the solar cell module includes a plurality of solar cells arranged in one direction, and the solar cells have two bus bar electrodes extending in the connection direction on the light receiving surface and the back surface. Of two adjacent solar cells, a bus bar electrode provided on one light receiving surface and a bus bar electrode provided on the other back surface are connected by an interconnector.
- the present disclosure has been made in view of the above problems, and an object thereof is to further improve the productivity of the daylighting type solar cell module.
- the solar cell module according to the present disclosure is provided on the first solar cell extending in the first direction and the light receiving surface side of the first solar cell, and extends in the first direction.
- a first light-receiving surface-side collecting electrode and a first light-receiving surface connected to one end of the first light-receiving-surface-side collecting electrode and extending in a direction intersecting the first direction in the light-receiving surface A side connection electrode and an interconnector connected to the first light receiving surface side connection electrode.
- the first solar cell is provided on a semiconductor substrate, the light receiving surface side of the semiconductor substrate, and a semiconductor film having a conductivity type opposite to that of the semiconductor substrate;
- the side surface disposed between the light receiving surface and the back surface and extending in the first direction, the laser processing region disposed on the side surface and formed by laser processing, and the side surface, the laser processing region more than the laser processing region
- a width of the laser processing region in a direction perpendicular to the light receiving surface is equal to the thickness of the first solar cell. It is good also as a structure which is 40% or less.
- the first solar cell is provided on a semiconductor substrate and the light receiving surface side of the semiconductor substrate, and has a conductivity type opposite to that of the semiconductor substrate.
- the side surface disposed between the light receiving surface and the back surface and extending in the first direction, the back surface region disposed on the side surface and having the first surface roughness, and the side surface, A light receiving surface side region that is disposed closer to the light receiving surface than the back surface side region and has a second surface roughness smaller than the first surface roughness, and the back surface in a direction perpendicular to the light receiving surface
- the width of the side region may be 40% or less of the thickness of the first solar battery cell.
- the first solar cell constitutes an outer shape of the first solar cell as viewed from the light receiving surface side, and the first solar cell A first side extending in the direction may be provided, and an end portion of the first light receiving surface side connection electrode may overlap with the first side when viewed from the light receiving surface side.
- the first solar cell constitutes an outer shape of the first solar cell as viewed from the light receiving surface side, and the first solar cell A first side extending in a direction and an outer shape of the first solar cell as viewed from the light receiving surface side, and a second direction extending in a second direction orthogonal to the first direction on the light receiving surface. And a value obtained by dividing the length of the first side by the length of the second side is more than 5 and less than 100.
- the solar cell module in (1) to (5) above is provided on the back surface side of the first solar battery cell, and the first back surface side collecting electrode extending in the first direction;
- a first back-side connection electrode connected to the other end side of the first back-side current collecting electrode and extending in a direction intersecting the first direction on the back side; It is good also as a structure arrange
- the first solar cell constitutes an outer shape of the first solar cell when viewed from the back surface side, and extends in the first direction. It is good also as a structure which has 3 edge
- the interconnector may be colored in the same color as the color of the first solar cell.
- the solar cell module in the above (7) to (8) is provided on the second solar cell extending in the first direction and on the back side of the second solar cell, and the first A second back side current collecting electrode extending in the direction of the second side, and connected to the other end side of the second back side current collecting electrode, and extending in a direction intersecting the first direction in plan view, It is good also as a structure further including the 2nd back surface side connection electrode connected with the connector.
- the light receiving surface side of the first solar battery cell intersects the first direction other than the first light receiving surface side connection electrode. It is good also as a structure without the electrode extended
- the solar cell module according to (9) is an electrode extending in a direction intersecting the first direction on the back side of the second solar battery cell, in addition to the second back side connection electrode. It is good also as a structure which does not exist.
- a glass building material of the present disclosure includes a window frame, a window glass disposed on the inner peripheral side of the window frame, and the solar cell module according to any one of (1) to (11) above, Electrically connecting the solar cell module, the second solar cell module arranged side by side in a direction intersecting the first direction, the solar cell module, and the second solar cell module; Wiring extending in a direction intersecting the first direction, and the solar cell module and the second solar cell module are arranged so as to overlap the window glass as viewed from the light receiving surface side, The wiring is arranged so as to overlap the window frame when viewed from the light receiving surface side.
- the first light receiving surface side current collecting electrode and the second light receiving electrode A gap between the light receiving surface side collector electrode and the semiconductor substrate along the dividing line extending in the first direction.
- the semiconductor substrate is bent along the dividing line, and the first light receiving surface side Forming a first solar cell having a current collecting electrode and a second solar cell having the second light receiving surface side current collecting electrode.
- the depth of the groove in the direction perpendicular to the light receiving surface is the first solar cell. It is good also as a manufacturing method which is 40% or less of the thickness.
- the method for extending the first direction toward the back side of the semiconductor substrate is performed before the step of irradiating with the laser light.
- the first light-receiving surface side collecting electrode and the second back surface collecting electrode are disposed after the bending cutting step.
- the manufacturing method may further include a step of connecting with an interconnector.
- the method for manufacturing a solar cell module according to (16) may be a method further including a step of coloring the interconnector to a color similar to the color of the first solar cell.
- FIG. 1 is a schematic plan view showing the light receiving surface side of the solar cell module according to the first embodiment.
- FIG. 2 is a schematic plan view showing the back side of the solar cell module according to the first embodiment.
- FIG. 3 is a schematic plan view showing the light receiving surface side of the solar cell module according to the first embodiment.
- FIG. 4 is a schematic view showing a side surface of the solar cell module according to the first embodiment.
- FIG. 5 is a schematic plan view showing the glass building material according to the first embodiment.
- FIG. 6 is a schematic side view in which the portion A in FIG. 4 is enlarged.
- FIG. 7 is a schematic side view in which part A of FIG. 4 is enlarged.
- FIG. 8 is a plan view showing the light-receiving surface side of a rectangular solar cell used in the method for manufacturing a solar cell module according to the first embodiment.
- FIG. 9 is a plan view showing the back side of a rectangular solar battery cell used in the method for manufacturing a solar battery module in the first embodiment.
- FIG. 10 is a flowchart showing a method for manufacturing the solar cell module according to the first embodiment.
- FIG. 1 is a schematic plan view showing the light receiving surface side of the solar cell module 100 according to the present embodiment.
- the solar battery cell 10 has a shape extending in the first direction.
- the long side extending in the first direction and the second side orthogonal to the first direction in the light receiving surface. It has a substantially rectangular shape having a short side extending in the direction.
- the light receiving surface side collector electrode 12 extending in the first direction is disposed on the light receiving surface side of the solar battery cell 10 and plays a role of collecting carriers generated by photoelectric conversion in the solar battery cell 10.
- the light receiving surface side collecting electrode 12 in the present embodiment is configured to include two finger electrodes.
- the side connection electrode 14 is disposed and electrically connected to the light receiving surface side collecting electrode 12.
- the light receiving surface side connection electrode 14 is an electrode for electrical connection with another solar battery cell, and is an electrode directly connected to the interconnector 21.
- the extending direction of the light-receiving surface side connection electrode 14 is not necessarily orthogonal to the first direction.
- the light receiving surface side connection electrode 14 may be connected to one end side of the light receiving surface side current collecting electrode 12, and is not necessarily connected to the end portion of the light receiving surface side current collecting electrode 12. In the present disclosure, if the light receiving surface side connection electrode 14 is disposed within the range of less than 10% of the length of the light receiving surface side current collecting electrode 12 from the end of the light receiving surface side current collecting electrode 12, It is assumed that the light receiving surface side collecting electrode 12 is disposed on one end side.
- the interconnector 21 is connected to the entire light receiving surface side collecting electrode 12, when the position of the interconnector 21 is shifted, the interconnector 21 and the light receiving surface side collecting electrode 12 are not connected.
- the interconnector 21 creates a shadow on the light receiving surface side of the solar battery cell 10 and lowers the conversion efficiency.
- the presence of the interconnector 21 creates a shadow on the light receiving surface side of the solar battery cell 10. Can reduce the risk.
- the light-receiving surface side connection electrode 14 extends to the long side of the solar battery cell 10. That is, the end portion of the light receiving surface side connection electrode 14 has a first side extending in the first direction among the sides constituting the outer shape of the solar battery cell 10 when viewed from the light receiving surface side, and the light receiving surface side. It is configured to overlap as seen. With such a configuration, the contact area between the light receiving surface side connection electrode 14 and the interconnector 21 is ensured, and high-precision position control is not required, thereby further improving productivity. That is, even if the position of the interconnector 21 is shifted in the second direction orthogonal to the first direction, the light receiving surface side connection electrode 14 extends to the long side of the solar battery cell 10. By setting it as a structure, the contact area of the electrode 14 for light-receiving surface side connection and the interconnector 21 can be ensured.
- FIG. 2 is a schematic plan view showing the back side of the solar cell module 100 according to the present embodiment.
- a back side current collecting electrode 16 extending in the first direction is disposed, and plays a role of collecting carriers generated by photoelectric conversion in the solar cell 10.
- the back surface side collecting electrode 16 in the present embodiment is configured to include two finger electrodes.
- the other end side (the left end side in the example shown in FIG. 2) of the back surface side collecting electrode 16 on the back surface side of the solar battery cell 10 is connected to the back surface side that extends in the direction intersecting the first direction.
- the electrode 18 is disposed and is electrically connected to the back side collecting electrode 16.
- the back surface side connection electrode 18 is an electrode for electrical connection with other solar cells, and is an electrode directly connected to the interconnector 21.
- the light receiving surface side collecting electrode 12 is arranged on one end side of the solar battery cell 10 (right end side in the example shown in FIG. 1).
- the back surface side connection electrode 18 is arranged on the other end side of the solar battery cell 10 (the left end side in the example shown in FIG. 2), The electric electrode 12 and the back surface side connection electrode 18 are arranged at positions that do not face each other with the solar battery cell 10 interposed therebetween.
- the extending direction of the back surface side connection electrode 18 is not necessarily orthogonal to the first direction. Further, the back surface side connection electrode 18 may be connected to the other end side of the back surface side collecting electrode 16, and is not necessarily connected to the end portion of the back surface side collecting electrode 16. In the present disclosure, if the back surface side connection electrode 18 is disposed within the range of less than 10% of the length of the back surface side current collecting electrode 16 from the end portion of the back surface side current collecting electrode 16, It is assumed that the collector electrode 16 is disposed on the other end side.
- the back surface side connection electrode 18 extends to the long side of the solar battery cell 10. That is, the end portion of the back surface side connection electrode 18 overlaps with the third side extending in the first direction among the sides constituting the outer shape of the solar battery cell 10 when viewed from the back surface side and viewed from the back surface side. It is configured to do. With such a configuration, the contact area between the back-side connection electrode 18 and the interconnector 21 is ensured, and high-precision position control is not required, thereby further improving productivity. That is, even when the position of the interconnector 21 is shifted in the second direction orthogonal to the first direction, the back surface side connection electrode 18 extends to the long side of the solar battery cell 10. By doing, the contact area of the electrode 18 for back side connection and the interconnector 21 can be ensured.
- FIG. 3 is a schematic plan view showing the light receiving surface side of the solar cell module 100 according to the present embodiment.
- FIG. 4 is a schematic diagram showing a side surface of the solar cell module 100 according to the present embodiment.
- the solar cell module 100 includes a first solar cell 10A and a second solar cell 10B.
- the first solar cell 10A and the second solar cell 10B are respectively It is configured to be connected on the short side. That is, the first solar cell 10A and the second solar cell 10B are arranged side by side so that their long sides extend in the first direction, and are electrically connected to each other on the short side. It is the composition which becomes.
- the first light receiving surface side collecting electrode 12 ⁇ / b> A extending in the first direction is disposed on the light receiving surface side of the first solar cell 10 ⁇ / b> A.
- the first light receiving surface side of the first light receiving surface side collecting electrode 12A (the right end side in the example shown in FIG. 4) extends in the direction intersecting the first direction in the light receiving surface.
- a connection electrode 14A is disposed and is electrically connected to the first light receiving surface side collector electrode 12A.
- a first back surface side collecting electrode 16A extending in the first direction is disposed on the back surface side of the first solar battery cell 10A, and the other end side of the first back surface side collecting electrode 16A (see FIG. In the example shown in FIG. 4, the first back surface side connection electrode 18A extending in the direction intersecting the first direction in the back surface is disposed on the left end side).
- the first light receiving surface side connection electrode 14A provided in the first solar cell 10A is one end side on the light receiving surface side of the first solar cell 10A (example shown in FIG. 4).
- the first back surface side connection electrode 18A is disposed on the other end side (the left end side in the example shown in FIG. 4) on the back surface side of the first solar cell 10A. . That is, the first light receiving surface side connection electrode 14A and the first back surface side connection electrode 18A are configured not to face each other through the first solar battery cell 10A.
- the second light receiving surface side collector electrode 12 ⁇ / b> B extending in the first direction is formed on the light receiving surface side of the second solar cell 10 ⁇ / b> B. Is arranged on one end side (right end side in the example shown in FIG. 4) of the second light receiving surface side collecting electrode 12B and extends in a direction intersecting the first direction in the light receiving surface.
- a surface-side connection electrode 14B is disposed and electrically connected to the second light-receiving surface-side collector electrode 12B.
- a second back surface side collecting electrode 16B extending in the first direction is disposed on the back surface side of the second solar battery cell 10B, and the other end side of the second back surface side collecting electrode 16B (see FIG. In the example shown in FIG. 4, the second back surface side connection electrode 18B extending in the direction intersecting the first direction in the back surface is disposed on the left end side).
- the second light receiving surface side connection electrode 14B provided in the second solar cell 10B is one end side on the light receiving surface side of the second solar cell 10B (example shown in FIG. 4).
- the second back surface side connection electrode 18B is disposed on the other end side (the left end side in the example shown in FIG. 4) on the back surface side of the second solar cell 10B. . That is, the second light receiving surface side connection electrode 14B and the second back surface side connection electrode 18B are configured not to face each other with the second solar battery cell 10B interposed therebetween.
- an interconnector 21 is disposed between the first solar cell 10A and the second solar cell 10B.
- the interconnector 21 is electrically connected to the first light receiving surface side connection electrode 14A on the light receiving surface side of the first solar cell 10A, and the side surface of the first solar cell 10A and the second solar cell. It is routed to the back surface side of the second solar battery cell 10B via the space between the side surfaces of the cell 10B.
- the interconnector 21 is electrically connected to the second back surface side connection electrode 18B on the back surface side of the second solar battery cell 10B.
- the interconnector 21 is formed using a material having high conductivity such as copper.
- the productivity of the solar cell module 100 in which the shapes of the first solar cell 10A and the second solar cell 10B are extended in the first direction, which is the connection direction of both, is achieved. Further improvement can be realized. That is, according to the above configuration, since the interconnector 21 is connected to the first light receiving surface side connection electrode 14A and the second back surface side connection electrode 18B, the interconnector 21 is connected to the first light receiving surface. There is no need to connect to the entire surface-side collector electrode 12A and the second back-side collector electrode 16B, and highly accurate position control is not required. As a result, further improvement in productivity can be realized.
- the first light receiving surface side connection electrode 14A and the second back surface side connection electrode 18B extend in a direction intersecting the first direction, the position of the interconnector 21 is in the first direction. Even if it deviates in the intersecting direction, it is possible to connect to the first light receiving surface side connection electrode 14A and the second back surface side connection electrode 18. Therefore, further improvement in productivity can be realized.
- the first solar battery cell 10A and the second solar battery cell 10B have a shape extending in the first direction that is the connection direction as in the present embodiment, the first light receiving surface side current collection is performed.
- the electrode 12A and the second back side collecting electrode 16B are also configured to extend in the first direction.
- the interconnector 21 is connected to the entire first light receiving surface side collecting electrode 12A, when the position of the interconnector 21 is shifted, the interconnector 21 and the first light receiving surface side are connected. Not only is the contact area with the current collecting electrode 12A not guaranteed and the contact resistance increases, but also the interconnector 21 creates a shadow on the light receiving surface side of the first solar cell 10A, resulting in conversion efficiency. However, in the configuration of the present disclosure, it is not necessary to provide the interconnector 21 over the entire first light receiving surface side collecting electrode 12A. The risk of creating a shadow on the light receiving surface side of one solar battery cell 10A can be reduced.
- the first light receiving surface side connection electrode 14A extends to the long side of the first solar cell 10A
- the second back surface side connection electrode 18B is the second solar cell. It is set as the structure extended even to the long side of 10B. That is, the first side of the first light receiving surface side connection electrode 14A extending in the first direction among the sides constituting the outer shape of the first solar cell 10A when viewed from the light receiving surface side. And the end portion of the second back surface side connection electrode 18B as viewed from the light receiving surface side, the side constituting the outer shape of the second solar battery cell 10B as viewed from the light receiving surface side, The first side extending in the first direction overlaps the first side when viewed from the back side.
- the contact area between the first light receiving surface side connection electrode 14A and the second back surface side connection electrode 18B and the interconnector 21 is secured, and highly accurate position control is performed. Can be eliminated, and the productivity can be further improved. That is, even when the position of the interconnector 21 is shifted in the second direction orthogonal to the first direction, the first light receiving surface side connection electrode 14A and the second back surface side connection electrode The contact area between 18B and the interconnector 21 can be secured.
- FIGS. 6 and 7 are schematic side views in which the portion A in FIG. 4 is enlarged, and each shows an example of a side surface extending in the first direction in the solar battery cell of the present embodiment.
- the first solar cell 10 ⁇ / b> A includes a semiconductor substrate 50 and a first semiconductor layer 52 that is provided on the light receiving surface side of the semiconductor substrate 50 and has a reverse conductivity type.
- an n-type single crystal silicon substrate is used as the semiconductor substrate 50, and a first semiconductor having a conductivity type opposite to that of the n-type single crystal silicon substrate is provided on the light receiving surface side of the n-type single crystal silicon substrate.
- a p-type amorphous silicon layer is formed as the layer 52.
- a first i-type amorphous silicon layer 51 is provided between the semiconductor substrate 50 and the first semiconductor layer 52, and the light receiving surface side of the first semiconductor layer 52 is further increased.
- a first transparent electrode layer 53 is provided.
- a second i-type amorphous silicon layer 54, a second semiconductor layer 55 of the same conductivity type as the semiconductor substrate 50, and a second transparent conductive layer 56 are provided in this order.
- an n-type amorphous silicon layer is used as the second semiconductor layer 55.
- the thickness of the semiconductor substrate 50 is, for example, about 200 ⁇ m, and the first i-type amorphous silicon layer 51, the first semiconductor layer 52, the second i-type amorphous silicon layer 54, and the second
- the film thickness of the semiconductor layer 55 is, for example, less than 0.01 ⁇ m, and the film thicknesses of the first transparent electrode layer 53 and the second transparent conductive layer 56 are, for example, about 0.1 ⁇ m. Therefore, the film thickness of the semiconductor substrate 50 occupies most of the film thickness of the first solar cell 10A, and the PN junction formed by the semiconductor substrate 50 and the first semiconductor layer 52 is It is formed in a small area on the light receiving surface side.
- the side surface extended in the 1st direction in the 1st photovoltaic cell 10A is the laser processing field 60 formed by laser processing, and bending cutting. And a bent cutting region 62 formed.
- the laser processing region 60 is disposed closer to the back surface than the bending cutting region 62, and the bending cutting region 62 is disposed closer to the light receiving surface than the laser processing region 60.
- the width of the laser processing region 60 in the direction perpendicular to the light receiving surface, that is, the stacking direction is set to 40% or less of the thickness of the first solar cell 10A.
- the laser processing region 60 has a first surface roughness
- the bent cutting region 62 has a second surface roughness
- the second surface roughness is higher than the first surface roughness. It has a small configuration. That is, the surface roughness of the bent cutting region 62 is smaller than the surface roughness of the laser processing region 60.
- a p-type single crystal silicon substrate is used as the semiconductor substrate 50 ⁇ / b> A, and a first conductive layer having a conductivity type opposite to that of the p-type single crystal silicon substrate is provided on the light receiving surface side of the p-type single crystal silicon substrate.
- An n-type crystalline silicon layer is formed as the semiconductor layer 52A.
- an insulating film 58 having an opening is provided on the light receiving surface side of the first semiconductor layer 52A, and the first light receiving surface side collector is provided through the opening.
- the electric electrode 12A is connected to the first semiconductor layer 52A.
- a p + -type crystalline silicon layer is provided as a second semiconductor layer 55A of the same conductivity type as the semiconductor substrate 50.
- the side surface extending in the first direction in the first solar battery cell 10 ⁇ / b> A has a laser processing region 60 formed by laser processing and a bending cutting region 62 formed by bending cutting. And having.
- the laser processing region 60 is disposed on the back surface side, and the bent cutting region 62 is disposed on the light receiving surface side.
- the width of the laser processing region 60 in the direction perpendicular to the light receiving surface, that is, the stacking direction is set to 40% or less of the thickness of the first solar cell 10A.
- the second solar cell 10B also has the same configuration as the above-described first solar cell 10A.
- the solar cell 10 (the first solar cell 10A, the second solar cell 10B) constitutes its outer shape and extends in the first direction (long side). Side) and a second side (short side) extending in a second direction orthogonal to the first direction in the light receiving surface, and the length of the long side is the length of the short side
- the divided value is greater than 5 and less than 100.
- the present disclosure is configured such that the value obtained by dividing the length of the first side extending in the first direction by the length of the second side extending in the second direction exceeds 5.
- a blind tone design can be obtained, which is preferable from the viewpoint of design.
- the value obtained by dividing the length of the first side extending in the first direction by the length of the second side extending in the second direction is less than 100. That is, the mechanical strength of the solar battery cell 10 can be ensured by adopting a configuration in which the solar battery cell 10 is not too long.
- this embodiment has a configuration in which the value obtained by dividing the length of the long side by the length of the short side exceeds 5, the solar cell 10 (first solar cell 10A, second solar cell) In the light receiving surface side and the back surface side of the cell 10B), in addition to the light receiving surface side connection electrode 14 and the back surface side connection electrode 18, there is adopted a configuration in which there is no electrode extending in the direction intersecting the first direction.
- the connection electrode 18 since the value obtained by dividing the length of the long side by the length of the short side exceeds 5, the light receiving surface side collecting electrode 12 extending in the first direction which is the long side direction, and the back side Most of the carriers generated in the solar battery cell 10 can be collected by the connection electrode 18. Therefore, it is possible to adopt a configuration in which a current collecting electrode is not provided in a direction intersecting the first direction. As a result, the productivity can be further improved, and it is also preferable from the viewpoint of design.
- the interconnector 21 is configured to be colored in the same color as the solar battery cell 10 (first solar battery cell 10A, second solar battery cell 10B). With such a configuration, the interconnector 21 does not stand out in the solar cell module 100, which is preferable from the viewpoint of design.
- FIG. 5 is a schematic plan view showing a glass building material in which the solar cell module 100 shown in the present embodiment is installed in a window.
- the glass building material 200 includes a window frame 30 and a window glass 32 disposed on the inner peripheral side of the window frame 30.
- the plurality of solar battery modules 100 are arranged so as to overlap with the window glass 32 when viewed from the light receiving surface side, and each solar battery cell 10 included in the solar battery module 100 extends in the first direction.
- Each solar battery cell 10 is connected by an interconnector 21.
- the some solar cell module 100 is arranged side by side in the direction which cross
- wirings 34 that electrically connect the plurality of solar cell modules 100 are arranged, and the wirings 34 intersect with the first direction. Is included.
- the wiring 34 extending in the direction intersecting the first direction is overlapped with the window frame 30 so as not to be visually recognized by the user, and in the region visually recognized by the user, the first It is possible to realize a configuration in which only the plurality of solar cell modules 100 that are arranged in the direction that intersects the first direction and that are arranged side by side are exposed. As a result, a plurality of solar cell modules 100 that are electrically connected to each other can be formed on the entire window glass 32, and a blind design can be realized.
- the light receiving surface side current collecting electrode 12 and the back surface side current collecting electrode 16 exemplify a configuration including two finger electrodes, respectively.
- the light receiving surface side current collecting electrode 12 and the back surface side current collecting electrode are illustrated.
- the number of finger electrodes constituting the electrode 16 is not limited to this.
- the lengths of the long side and the short side of the solar battery cell 10 are not limited to the values described above.
- the shape of the photovoltaic cell 10 is not limited to a rectangular shape, and may be a parallelogram or other shapes.
- the solar cell module 100 of the present disclosure may be disposed with the light receiving surface side facing the indoor side, or may be disposed with the light receiving surface side facing the outdoor side.
- FIG. 8 is a plan view showing a light receiving surface side of a rectangular solar battery cell used in the method for manufacturing a solar battery module in the present embodiment
- FIG. 9 is a plan view showing a back surface side of the rectangular solar battery cell.
- FIG. 10 is a flowchart which shows the manufacturing method of the solar cell module in this embodiment.
- the manufacturing method of the solar cell module in the present embodiment is a rectangular solar cell including the plurality of solar cells 10 (first solar cell 10A, second solar cell 10B) described above.
- a process S100 for manufacturing the cell 1000 and a process S200 for dividing the rectangular solar battery cell 1000 into a plurality of solar battery cells 10 are included.
- step S100 for manufacturing the rectangular solar battery cell 1000 the step S101 for forming the first semiconductor layer 52, the first light receiving surface side current collecting electrode 12A, and the second light receiving surface side current collecting electrode 12B.
- Step S102 for forming the light receiving surface side connection electrode 14Z Step S104 for forming the first back side current collecting electrode 16A and the second back side current collecting electrode 16B, and the back side And step S105 of forming the connection electrode 18Z.
- the first semiconductor layer 52 having a conductivity type opposite to that of the semiconductor substrates 50 and 50A is formed on the light receiving surface side of the semiconductor substrates 50 and 50A described above with reference to FIGS. , 52A.
- the first semiconductor layers 52 and 52A can be formed by a chemical vapor deposition (CVD) method, for example.
- CVD chemical vapor deposition
- step S102 for forming the first light receiving surface side current collecting electrode 12A and the second light receiving surface side current collecting electrode 12B is performed.
- step S102 of forming the first light receiving surface side current collecting electrode 12A and the second light receiving surface side current collecting electrode 12B the first light receiving surface side of the first semiconductor layer 52 is formed on the first light receiving surface side as shown in FIG.
- the first light receiving surface side collector electrode 12A and the second light receiving surface side collector electrode 12B extending in the direction are formed.
- a plurality of light receiving surface side collecting electrodes 12 provided in other solar cells 10 may be formed simultaneously.
- step S103 for forming the light receiving surface side connection electrode 14 is performed.
- the first light receiving surface side collecting electrode 12A and the second light receiving surface side collecting electrode 12B are connected to one end side (the right end side in FIG. 8), A light receiving surface side connection electrode 14 extending in a direction intersecting the first direction in plan view is formed.
- the light receiving surface side connection electrode 14 may be separately formed for each solar battery cell 10 formed in the step S200 that is divided into a plurality of solar battery cells 10 described later.
- a common light receiving surface side connection electrode 14 ⁇ / b> Z is formed in each solar battery cell 10.
- the light receiving surface side connection electrode 14Z is disposed in the first light receiving surface side connection electrode 14A and the second solar cell 10B disposed in the first solar cell 10A in a dividing step S200 described later.
- the second light receiving surface side connection electrode 14 ⁇ / b> B and the other light receiving surface side connection electrode 14 disposed in the solar battery cell 10 are separated.
- step S104 the step of forming the first back side current collecting electrode 16A and the second back side current collecting electrode 16B on the back side of the semiconductor substrate 50.
- a first back side current collecting electrode 16A and a second back side current collecting electrode 16B are formed.
- a plurality of back surface side collecting electrodes 16 provided on other solar cells 10 may be formed simultaneously.
- step S105 for forming the back side connection electrode 18 is performed.
- the first back side current collecting electrode 16A and the second back side current collecting electrode 16B are connected to the other end side (the left end side in FIG. 9),
- the back side connection electrode 18 is formed to extend in a direction intersecting with the direction in plan view.
- the back surface side connection electrode 18 may be formed separately for each solar battery cell 10 formed in the step S200 for dividing into a plurality of solar battery cells 10 to be described later.
- the back side connection electrode 18Z common to the solar battery cells 10 is formed.
- This back surface side connection electrode 18Z is the second back surface side connection electrode 18A and the second solar cell 10B that are disposed in the first solar cell 10A in the dividing step S200 described later.
- the back surface side connection electrode 18 ⁇ / b> B and the back surface side connection electrode 18 disposed in the other solar battery cell 10 are separated.
- the front-rear relationship between the step S104 for forming the collecting electrode 16A and the second back side collecting electrode 16B and the step S105 for forming the back side connecting electrode 18Z is not limited.
- the step S200 for dividing the plurality of solar cells 10 includes a laser irradiation step S201 and a bending step S202.
- a dividing line CL extending in the first direction is formed between the first light receiving surface side collector electrode 12A and the second light receiving surface side collector electrode 12B.
- a laser beam is irradiated from the back side of the semiconductor substrate 50 to form a groove.
- the depth of the groove to be formed is 40% or less of the thickness of the solar battery cell 10.
- the material which comprises the photovoltaic cell 10 is sublimated, and this sublimated material may adhere to the side surface of the photovoltaic cell 10 exposed from the formed groove
- channel. is there.
- the semiconductor material constituting the semiconductor substrate 50 and the metal material constituting the back surface side connection electrode 18 ⁇ / b> Z may be sublimated and adhere to the side surface of the solar battery cell 10.
- a PN junction is arranged on the light receiving surface side of the solar battery cell 10, and the semiconductor substrate 50 and the first semiconductor layer 52 constituting the PN junction are arranged. The boundary is prevented from being exposed from the groove formed from the back surface side. Therefore, the sublimated material does not adhere to the boundary, and the occurrence of leakage current can be suppressed.
- laser light is irradiated from the back side of the semiconductor substrate 50 not only along the dividing line CL extending in the first direction but also along the dividing line CL2 extending in the second direction.
- Grooves are formed. Specifically, on the one end side (right end side in FIG. 8) from the light receiving surface side connection electrode 14Z and the other end side (left end side in FIG. 9) from the back side connection electrode 18Z, the first Also in the parting line CL2 extending in the second direction orthogonal to the direction, a groove is formed by laser light irradiation.
- the bending step S202 is performed after the laser light irradiation step S201.
- the semiconductor substrate 50 is bent and cut along the dividing line CL, and the first solar cell 10A having the first light receiving surface side current collecting electrode 12A and the second light receiving surface side current collector. This is a step of forming the second solar battery cell 10B having the electric electrode 12B.
- process S200 which divides
- the extending side surface has a laser processing region 60 formed by laser processing and a bending cutting region 62 formed by bending cutting, and the laser processing region 60 is disposed on the back surface side and bending cutting is performed.
- the region 62 is arranged on the light receiving surface side.
- the laser processing region 60 has a first surface roughness
- the bent cutting region 62 has a second surface roughness
- the second surface roughness is higher than the first surface roughness. It has a small configuration.
- the depth of the groove to be formed is 40% or less of the thickness of the solar battery cell 10, so that the productivity of the bending step S202 can be improved. That is, when the elongated solar battery cell 10 extending in the first direction as shown in the present disclosure is divided using the bending step S202, even if only a desired dividing line CL is to be bent, another dividing line CL There is also a possibility that stress will be applied and the material will be divided. However, in this embodiment, since the depth of the groove to be formed is 40% or less of the thickness of the solar battery cell 10, it can be bent and divided for each desired dividing line CL. Productivity of the music process S202 can be improved.
- the step S200 for dividing the rectangular solar cell 1000 into a plurality of solar cells 10 is configured in two stages, a laser light irradiation step S201 and a bending step S202, so that the light receiving surface side connection is performed.
- a plurality of A method of dividing the light receiving surface side connection electrode 14 and the plurality of back surface side connection electrodes 18 can be employed.
- the light receiving surface side connection electrode 14Z and the back surface side connection electrode 18Z are configured as described above.
- the metal material is sublimated and adheres to the side surface of the solar battery cell 10.
- the laser irradiation step S201 and the bending step S202 are included in two stages, and the semiconductor substrate 50 and the first semiconductor layer 52 that form the PN junction in the laser irradiation step S201 The boundary surface is not exposed from the groove. Therefore, the sublimated material does not adhere to the boundary between the semiconductor substrate 50 forming the PN junction and the first semiconductor layer 52, and the occurrence of leakage current can be suppressed.
- the plurality of light receiving surface side connection electrodes 14 and the plurality of back surfaces Since the method of dividing into the side connection electrode 18 can be adopted, a configuration in which the light receiving surface side connection electrode 14 and the back surface side connection electrode 18 are extended to the long side of the solar battery cell 10 is realized. Can do. That is, the ends of the light-receiving surface side connection electrode 14 and the back surface side connection electrode 18 have a first side extending in the first direction among the sides constituting the outer shape of the solar battery cell 10, and the back surface side. It is possible to realize a configuration that overlaps when viewed.
- the contact area of the light receiving surface side connection electrode 14, the back surface side connection electrode 18, and the interconnector 21 is ensured, and highly accurate position control is not required, thereby further improving productivity. be able to. That is, even when the position of the interconnector 21 is shifted in the second direction orthogonal to the first direction, the light receiving surface side connection electrode 14 and the back surface side connection electrode 18 are connected to the solar cell 10. By adopting a configuration that extends to the long side, the contact area between the light receiving surface side connection electrode 14, the back surface side connection electrode 18, and the interconnector 21 can be secured.
- one end side (right end side in FIG. 8) from the light receiving surface side connection electrode 14Z and the other end side from the back surface side connection electrode 18Z ( On the left end side in FIG. 9, a groove was also formed by laser light irradiation in the dividing line CL2 extending in the second direction orthogonal to the first direction.
- the dividing line CL2 extending in the second direction is also divided in the bending step S202.
- the first light receiving surface side connection electrode 14A is arranged on one end side, and on the back surface of the first solar cell 10A, on the other end side.
- the first back side connection electrode 18A can be arranged.
- the solar cell module 100 can be manufactured by connecting the back surface side collecting electrode 16 ⁇ / b> B with the interconnector 21.
- this interconnector 21 may further include the process of coloring this interconnector 21 in the color similar to the color of 10 A of 1st photovoltaic cells.
- This coloring step may be performed before step S100 for manufacturing rectangular solar cells, or may be performed after step S200 for dividing the solar cells into a plurality of solar cells, and a step for manufacturing rectangular solar cells. You may perform between S100 and process S200 which divides
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Abstract
Description
図1は、本実施形態に係る太陽電池モジュール100の受光面側を示す模式的な平面図である。太陽電池セル10は、第1の方向に延伸する形状を有しており、本実施形態においては、第1の方向に延伸する長辺と、受光面内において第1の方向に直交する第2の方向に延伸する短辺と、を有する略長方形状を有している。
以下、図8、9、10を用いて、本実施形態における太陽電池モジュールの製造方法を説明する。図8は、本実施形態における太陽電池モジュールの製造方法で用いる矩形の太陽電池セルの受光面側を示す平面図であり、図9は、矩形の太陽電池セルの裏面側を示す平面図である。また、図10は、本実施形態における太陽電池モジュールの製造方法を示すフローチャートである。
Claims (17)
- 第1の方向に延伸する第1の太陽電池セルと、
前記第1の太陽電池セルの受光面側に設けられ、前記第1の方向に延伸する第1の受光面側集電電極と、
前記第1の受光面側集電電極の一端側に接続され、前記受光面内において前記第1の方向と交差する方向に延伸する第1の受光面側接続用電極と、
前記第1の受光面側接続用電極に接続されたインターコネクタと、
を含む、太陽電池モジュール。 - 前記第1の太陽電池セルは、
半導体基板と、
前記半導体基板の前記受光面側に設けられ、前記半導体基板と逆導電型の半導体膜と、
前記受光面と裏面の間に配置され、前記第1の方向に延伸する側面と、
前記側面に配置され、レーザ加工によって形成されたレーザ加工領域と、
前記側面において、前記レーザ加工領域よりも前記受光面寄りに配置され、折曲切断によって形成された折曲切断領域と、
を含み、
前記受光面に垂直な方向における、前記レーザ加工領域の幅が、前記第1の太陽電池セルの厚みの40%以下である、
請求項1に記載の太陽電池モジュール。 - 前記第1の太陽電池セルは、
半導体基板と、
前記半導体基板の前記受光面側に設けられ、前記半導体基板と逆導電型の半導体膜と、
前記受光面と裏面の間に配置され、前記第1の方向に延伸する側面と、
前記側面に配置され、第1の表面粗さを有する裏面側領域と、
前記側面において、前記裏面側領域よりも前記受光面寄りに配置され、前記第1の表面粗さよりも小さな第2の表面粗さを有する受光面側領域と、
を含み、
前記受光面に垂直な方向における、前記裏面側領域の幅が、前記第1の太陽電池セルの厚みの40%以下である、
請求項1又は2に記載の太陽電池モジュール。 - 前記第1の太陽電池セルは、前記受光面側から見て前記第1の太陽電池セルの外形を構成し、前記第1の方向に延伸する第1の辺を有し、
前記第1の受光面側接続用電極の端部が、前記受光面側から見て、前記第1の辺と重畳する、
請求項1乃至3のいずれか一つに記載の太陽電池モジュール。 - 前記第1の太陽電池セルが、
前記受光面側から見て前記第1の太陽電池セルの外形を構成し、前記第1の方向に延伸する第1の辺と、
前記受光面側から見て前記第1の太陽電池セルの外形を構成し、前記受光面において前記第1の方向に直交する第2の方向に延伸する第2の辺と、を有し、
前記第1の辺の長さを前記第2の辺の長さで割った値が5を超え、且つ100未満である、
請求項1乃至4のいずれか一つに記載の太陽電池モジュール。 - 前記第1の太陽電池セルの裏面側に設けられ、前記第1の方向に延伸する第1の裏面側集電電極と、
前記第1の裏面側集電電極の他端側に接続され、前記裏面において前記第1の方向と交差する方向に延伸する第1の裏面側接続用電極と、を更に含み、
前記裏面側接続用電極が、前記第1の受光面側接続用電極と前記第1の太陽電池セルを介して対向しないよう配置された、
請求項1乃至5のいずれか一つに記載の太陽電池モジュール。 - 前記第1の太陽電池セルは、前記裏面側から見て前記第1の太陽電池セルの外形を構成し、前記第1の方向に延伸する第3の辺を有し、
前記第1の裏面側接続用電極の端部が、前記裏面側から見て、前記第3の辺と重畳する、
請求項6に記載の太陽電池モジュール。 - 前記インターコネクタが、前記第1の太陽電池セルの色と同系色に着色された、
請求項1乃至7のいずれか一つに記載の太陽電池モジュール。 - 前記第1の方向に延伸する第2の太陽電池セルと、
前記第2の太陽電池セルの裏面側に設けられ、前記第1の方向に延伸する第2の裏面側集電電極と、
前記第2の裏面側集電電極の他端側に接続され、前記第1の方向に平面視で交差する方向に延伸し、前記インターコネクタと接続された第2の裏面側接続用電極と、
を更に含む、請求項1乃至8のいずれか一つに記載の太陽電池モジュール。 - 前記第1の太陽電池セルの受光面側において、前記第1の受光面側接続用電極以外に、前記第1の方向に交差する方向に延伸する電極が存在しない、
請求項1乃至9のいずれか一つに記載の太陽電池モジュール。 - 前記第2の太陽電池セルの裏面側において、前記第2の裏面側接続用電極以外に、前記第1の方向に交差する方向に延伸する電極が存在しない、
請求項9に記載の太陽電池モジュール。 - 窓枠と、
前記窓枠の内周側に配置された窓ガラスと、
請求項1乃至11のいずれか一つに記載の太陽電池モジュールと、
前記太陽電池モジュールと、前記第1方向に交差する方向に並べて配置された第2の太陽電池モジュールと、
前記太陽電池モジュールと、前記第2の太陽電池モジュールと、を電気的に接続し、前記第1の方向に交差する方向に延伸する配線と、を含み、
前記太陽電池モジュールと前記第2の太陽電池モジュールとが、前記受光面側から見て前記窓ガラスと重畳するよう配置され、
前記配線が、前記受光面側から見て前記窓枠と重畳するよう配置された、
ガラス建材。 - 半導体基板の受光面側に、前記半導体基板と逆導電型の半導体層を製膜する工程と、
前記半導体層を製膜する工程の後で、前記半導体層の受光面側に、第1の方向に延伸する第1の受光面側集電電極、及び第2の受光面側集電電極を含む複数の受光面側集電電極を形成する工程と、
前記半導体層を製膜する工程の後で、前記第1の受光面側集電電極、前記第2の受光面側集電電極の一端側に接続され、前記第1の方向に平面視で交差する方向に延伸する受光面側接続用電極を形成する工程と、
前記受光面側接続用電極を形成する工程の後で、前記第1の受光面側集電電極と前記第2の受光面側集電電極との間において、前記第1の方向に延伸する分断ラインに沿って、前記半導体基板の裏面側からレーザ光を照射し、溝を形成する工程と、
前記レーザ光を照射する工程の後で、前記分断ラインに沿って、前記半導体基板を折曲切断し、前記第1の受光面側集電電極を有する第1の太陽電池セルと、前記第2の受光面側集電電極を有する第2の太陽電池セルと、を形成する工程と、
を含む、
太陽電池モジュールの製造方法。 - 前記レーザ光を照射する工程において、前記受光面に垂直な方向における、前記溝の深さは、前記第1の太陽電池セルの厚みの40%以下である、
請求項13に記載の太陽電池モジュールの製造方法。 - 前記レーザ光を照射する工程の前に、前記半導体基板の裏面側に、前記第1の方向に延伸する第1の裏面側集電電極、及び第2の裏面側集電電極を形成する工程と、
前記第1の裏面側集電電極、前記第2の裏面側集電電極の他端側に接続され、前記第1の方向に平面視で交差する方向に延伸する裏面側接続用電極を形成する工程と、
を更に含み、
前記裏面側接続用電極は、前記受光面側接続用電極と前記第1の太陽電池セルを介して対向しないよう配置される、
請求項13又は14に記載の太陽電池モジュールの製造方法。 - 前記折曲切断する工程の後で、前記第1の受光面側集電電極と前記第2の裏面側集電電極とを、インターコネクタにより接続する工程を更に含む、
請求項15に記載の太陽電池モジュールの製造方法。 - 前記インターコネクタを、前記第1の太陽電池セルの色と同系色に着色する工程を更に含む、
請求項16に記載の太陽電池モジュールの製造方法。
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Cited By (3)
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JPWO2021200418A1 (ja) * | 2020-03-30 | 2021-10-07 | ||
WO2021206135A1 (ja) * | 2020-04-09 | 2021-10-14 | 株式会社カネカ | 太陽電池モジュール |
EP3940794A4 (en) * | 2019-03-15 | 2023-03-15 | Kaneka Corporation | SOLAR BATTERY MODULE MANUFACTURING PROCESS, SOLAR BATTERY MODULE AND RAW MATERIAL SOLAR BATTERY CELL |
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- 2019-03-05 KR KR1020207028373A patent/KR102504652B1/ko active IP Right Grant
- 2019-03-05 CN CN201980017598.6A patent/CN111868934B/zh active Active
- 2019-03-05 WO PCT/JP2019/008645 patent/WO2019172258A1/ja active Application Filing
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JP7441937B2 (ja) | 2020-04-09 | 2024-03-01 | 株式会社カネカ | 太陽電池モジュール |
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KR102504652B1 (ko) | 2023-03-02 |
JP7085613B2 (ja) | 2022-06-16 |
CN111868934A (zh) | 2020-10-30 |
JPWO2019172258A1 (ja) | 2020-12-10 |
KR20200122394A (ko) | 2020-10-27 |
CN111868934B (zh) | 2024-04-16 |
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