WO2020004847A1 - Module de cellules solaires - Google Patents

Module de cellules solaires Download PDF

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Publication number
WO2020004847A1
WO2020004847A1 PCT/KR2019/007259 KR2019007259W WO2020004847A1 WO 2020004847 A1 WO2020004847 A1 WO 2020004847A1 KR 2019007259 W KR2019007259 W KR 2019007259W WO 2020004847 A1 WO2020004847 A1 WO 2020004847A1
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WO
WIPO (PCT)
Prior art keywords
solar cell
main body
bypass diode
cell module
connecting member
Prior art date
Application number
PCT/KR2019/007259
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English (en)
Korean (ko)
Inventor
우정훈
송용
염정환
전준호
김명환
Original Assignee
엘지전자 주식회사
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Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Publication of WO2020004847A1 publication Critical patent/WO2020004847A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/0203—Containers; Encapsulations, e.g. encapsulation of photodiodes
    • 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
    • H01L31/044—PV modules or arrays of single PV cells including bypass diodes
    • H01L31/0443—PV modules or arrays of single PV cells including bypass diodes comprising bypass diodes integrated or directly associated with the devices, e.g. bypass diodes integrated or formed in or on the same substrate as the photovoltaic cells
    • 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
    • H01L31/0445—PV modules or arrays of single PV cells including thin film solar cells, e.g. single thin film a-Si, CIS or CdTe solar cells
    • H01L31/046—PV modules composed of a plurality of thin film solar cells deposited on the same substrate
    • H01L31/0465—PV modules composed of a plurality of thin film solar cells deposited on the same substrate comprising particular structures for the electrical interconnection of adjacent PV cells in the module
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to a solar cell module, and more particularly, to a solar cell module having an improved structure that can be installed in various locations and spaces.
  • a solar cell module is formed by packaging a plurality of solar cells in series or in parallel.
  • a general solar cell module has a flat panel structure in which a plurality of solar cells are positioned in one direction and in a direction crossing each other in a main body having a large area so as to produce a desired output.
  • the flat panel solar cell module is difficult to install in a narrow area and has no excellent aesthetic characteristics.
  • a solar cell module having various structures other than flat panel structures.
  • a solar cell module has been proposed in which a solar cell is placed on each slat such as a blind or a sun visor and electrically connected thereto.
  • a junction box provided with a bypass diode.
  • a structure has been proposed in which electrodes for the role of the bypass diode are divided into adjacent blinds and the electrodes are exposed to the outside of the slats so that the bypass diodes operate when the slats are in contact with each other.
  • bypass diode may operate only when the slats overlap and the electrodes are in contact with each other. In the case where the slats do not overlap but the solar cell located in some slats due to the shadow does not perform photoelectric conversion, the bypass diode could not work.
  • the present invention has a structure that extends in one direction rather than a flat plate structure to be installed in a variety of positions, for example, a narrow position and to provide a solar cell module excellent in aesthetic characteristics. In this case, there is no need to provide a junction box to provide a solar cell module that can simplify the structure.
  • the present invention is to provide a solar cell module that can realize a sufficient amount of power generation while having a small volume by arranging a plurality of bodies in various numbers, arrangements and the like.
  • a solar cell module is a solar cell module having at least one main body having a shape extending in a first direction, the plurality of solar cells and the main body is connected along the first direction and the And a bypass diode electrically connected to a plurality of solar cells and provided in the main body.
  • the main body may include a first cover member positioned on a first surface side of the plurality of solar cells; A second cover member positioned on a second side of the plurality of solar cells;
  • the display device may further include a sealing material sealing the plurality of solar cells between the first cover member and the second cover member.
  • the bypass diode may be embedded in the body.
  • the sealant includes a first sealant positioned between the first face of the solar cell and the first cover member, and a second sealant positioned between the second face and the second cover member of the solar cell. can do.
  • the bypass diode may be positioned between the first sealing member and the second sealing member and spaced apart from the plurality of solar cells.
  • the bypass diode may be configured as a chip-shaped diode having a thickness smaller than the width and width.
  • the ratio of the thickness of the bypass diode to the thickness of the portion where the bypass diode is not positioned in the main body may be 2 times or less.
  • the bypass diode may have a thickness of about 0.1 mm to about 3 mm.
  • the plurality of solar cells in each of the main bodies include a first end solar cell positioned adjacent to a first end in the first direction, and a second end positioned adjacent to a second end opposite to the first end.
  • the main body may include a first conductive connecting member connected to a first electrode of a first end solar cell at the first end side, and a first end connected to a second electrode of the second end solar cell at the second end side. It may have a second conductive connecting member extending to a portion adjacent to.
  • An anode electrode of the bypass diode may be connected to any one of the first and second conductive connectors, and a cathode electrode of the bypass diode may be connected to the other of the first and second conductive connectors.
  • the first conductive connecting member and the second conductive connecting member may be exposed to the outside through the same first end and not exposed to the outside through the second end.
  • the first conductive connecting member may include a first connecting portion extending in the second direction toward the first end.
  • the second conductive connecting member may include a plurality of solar cells along the first direction from a second connecting portion extending along the second direction toward the second end and from a second connecting portion to a portion adjacent to the first end. It may have an extended portion extending along one edge while being spaced apart.
  • the extended portion may extend along one edge in the second direction and may not be provided at the other edge.
  • the first conductive connecting member may further include a first terminal portion extending outwardly from the first connecting portion through the first end portion.
  • the second conductive connecting member may further include a second terminal portion extending outwardly from the extending portion through the first end portion.
  • the extension portion and the second terminal portion may be positioned adjacent to one edge in the second direction, and the first terminal portion may be positioned adjacent to the other edge in the second direction.
  • the main body may be provided in plurality and connected in series to each other, and each of the main body may include at least one bypass diode. Then, the power generation amount may be proportionally increased according to the number of main bodies so that the solar cell module has a desired power generation amount.
  • the first conductive connecting member of one body and the second conductive connecting member of a body adjacent thereto may be connected to each other in the plurality of main bodies.
  • the output of each main body may be 10W to 40W.
  • the bypass diode may be incorporated in the main body to simplify the structure of the solar cell module.
  • the main body having a relatively small output as in the present embodiment is difficult to use the conventional bypass diode or / and junction box by miniaturization, the internal structure of the bypass diode in each main body to simplify the structure and volume Can be minimized.
  • the solar cell module may be provided with a plurality of the main body to have a desired sufficient output. Then, the solar cell module can be formed in various structures and can be formed to be used for various locations and for various purposes.
  • photoelectric conversion is performed using each main body as a basic unit, when shadows, defects, etc. occur, current does not flow only to the solar cell of the main body through the bypass diode. Accordingly, it is possible to effectively reduce problems such as reduced power generation and hot spots, which may be caused by shadows or defects.
  • FIG. 1 is a perspective view schematically showing various examples of applying a solar cell module according to an embodiment of the present invention.
  • FIG. 2 is a plan view illustrating one main body included in the solar cell module illustrated in FIG. 1.
  • FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 2.
  • FIG. 4 is a partial cross-sectional view of the solar cell taken along line IV-IV of FIG. 2.
  • FIG. 5 is an enlarged partial plan view of a portion A of FIG. 2.
  • FIG. 6 is an enlarged partial plan view of a portion B of FIG. 2.
  • FIG. 7 is a schematic perspective view of the bypass diode shown in FIG. 6.
  • FIG. 8 is a schematic configuration diagram of a plurality of main bodies included in the solar cell module illustrated in FIG. 1 and shown together with a micro inverter.
  • FIG. 9 is a plan view illustrating one body that may be included in a solar cell module according to a modification of the present invention.
  • any part of the specification “includes” other parts, unless otherwise stated, other parts are not excluded, and may further include other parts.
  • a part of a layer, film, region, plate, etc. is said to be “on” another part, this includes not only the case where the other part is “just above” but also the other part located in the middle.
  • parts such as layers, films, regions, plates, etc. are “just above” another part, it means that no other part is located in the middle.
  • FIG. 1 is a perspective view schematically showing various examples of applying a solar cell module according to an embodiment of the present invention.
  • the solar cell module 100 includes a plurality of solar cells (reference numeral 150 of FIG. 2, hereinafter identical), and includes at least a main body 10 having a shape extending in one direction. One can be provided.
  • the solar cell module 100 may be used in various ways including a plurality of main bodies 10 in a direction crossing the one direction.
  • the solar cell module 100 has a louver-type structure, so that a part or the whole of the plurality of main bodies 10 may be overlapped to manually adjust the length or the amount of light. Or applied to automatic blinds.
  • the plurality of main bodies 10 may be disposed in a vertical direction to each other so that the solar cell module 100 may be installed in a porch or the like having a balustrade structure.
  • the fixing part which integrally fixes the plurality of main bodies 10 is not shown.
  • Various configurations known as the fixing portion can be applied.
  • the plurality of main bodies 10 are illustrated to be perpendicular to the bottom surface, but the plurality of main bodies 10 may be positioned to have an inclined portion or a portion overlapping with the bottom surface.
  • the solar cell module 100 may have a sunshade structure in which the solar cell module 100 is installed parallel to or inclined with the bottom surface of the building.
  • the fixing part which integrally fixes the plurality of main bodies 10 is not shown.
  • Various configurations known as the fixing portion can be applied.
  • the plurality of main bodies 10 are illustrated as being parallel to the bottom surface, but the plurality of main bodies 10 may be positioned to have a portion which is formed to be inclined with the bottom surface or partially overlapped.
  • the solar cell module 100 has been described mainly in the case of being installed in a building, but the solar cell module 100 according to the present embodiment may be applied to various objects such as a vehicle and a location.
  • FIG. 2 is a plan view illustrating one main body 10 included in the solar cell module 100 shown in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 2. 4 is a partial cross-sectional view of the solar cell 150 taken along line IV-IV of FIG. 2, and FIG. 5 is an enlarged partial plan view of portion A of FIG. 2.
  • the main body 10 included in the solar cell module 100 includes a plurality of solar cells 150 connected along a first direction (x direction in the drawing).
  • the bypass diode 180 may be electrically connected to the plurality of solar cells 150 and provided in the main body 10.
  • the solar cell module 100 may include a first cover member 110 positioned on a first surface (eg, a front surface) of the plurality of solar cells 150, and a second surface (one of the plurality of solar cells 150).
  • the device further includes a second cover member 120 positioned at the rear side, and a sealing member 130 sealing the plurality of solar cells 150 between the first cover member 110 and the second cover member 120. can do.
  • the solar cell 150 may include a photoelectric conversion unit for converting the solar cell into electrical energy, and an electrode electrically connected to the photoelectric conversion unit to collect and transmit a current.
  • the plurality of solar cells 150 may be connected (eg, connected in series) in a first direction by the wiring member 142 to form a solar cell string.
  • the wiring member 142 electrically connects two neighboring solar cells 150 among the plurality of solar cells 150.
  • the solar cell 150 is exemplified as a silicon crystalline solar cell.
  • the semiconductor substrate 160 may be composed of a crystalline semiconductor (eg, a single crystal or a polycrystalline semiconductor, for example, single crystal or polycrystalline silicon) including a single semiconductor material (eg, a Group 4 element).
  • the conductive regions 20 and 30 may include a first conductive region 20 and a second conductive region 30, and the first or second conductive regions 20 and 30 may be semiconductor substrates 160. It may be composed of a doped region constituting a portion of), or an amorphous, microcrystalline or polycrystalline semiconductor layer.
  • the electrodes 42 and 44 may include a first electrode 42 connected to the first conductivity type region 20 and a second electrode 44 connected to the second conductivity type region 30.
  • the first and second passivation films 22 and 32 and the anti-reflection film 24 may be further included.
  • the first electrode 42 includes a plurality of finger lines 42a positioned in parallel in one direction, and is positioned in a direction crossing (eg, orthogonal to) the finger lines 42a and the wiring member 142.
  • Bus bar 42b corresponding to (eg, one-to-one correspondence).
  • the bus bars 42b may be provided in plurality at predetermined intervals, and may include a pad part 422 having a width equal to or greater than that of the wiring material 142 and substantially connected to the wiring material 142.
  • a line portion 421 may be further provided to connect the pad portion 422 while having a width smaller than that of the 422 and the wiring member 142.
  • the second electrode 44 may also include a finger line and a bus bar, and the bus bar may include a line part and a pad part.
  • the present invention is not limited thereto, and various modifications are possible, such as the second electrode 44 having a shape different from that of the first electrode 42 or being formed as a whole.
  • the first and / or second electrodes 42 and 44 may have a relatively small width and may reduce the area of the bus bar 42b while being used with the wiring member 142. Adhesion can be improved.
  • the width or diameter of the wiring member 142 is 1 ⁇ m or less (for example, 200 ⁇ m to 600 ⁇ m), and a shape having substantially the same length from the center in one direction and a direction crossing the same (eg, a circle). It may have a or rounded portion.
  • the wiring member 142 includes a core layer 142a made of metal and a solder layer 142b formed on the surface of the core layer 142a and including a solder material to enable soldering with the electrodes 42 and 44. It may include. Then, the wiring member 142 can be easily attached to the solar cell 150 by applying heat while the wiring member 142 is positioned on the solar cell 150.
  • the solar cell 150 used in the present embodiment has a shape having substantially the same length in one direction and a direction crossing the same (for example, having an approximately rectangular shape and having an inclined portion 150a at each corner).
  • An octagonal solar cell having an octagonal shape may be cut in one direction to have a long axis and a short axis. Then, the resistance by the current in each solar cell 150 can be reduced while using the existing manufacturing equipment as it is, it is possible to reduce the output loss of the solar cell module 100 including the same.
  • the drawing illustrates that the mother solar cell is cut to pass through the center and divided into two solar cells 150 and three to eleven wiring members 142 are provided.
  • the present invention is not limited thereto, and the mother solar cell that is not cut may be used as it is, or the mother solar cell may be cut and used by three or more solar cells 150.
  • the solar cell 150 cut in a direction parallel to the bus bar 42b is used in the mother solar cell.
  • the finger line 42a is formed in a short axis
  • the bus bar 42b is formed in the long axis
  • the bus bar 42b in which the wiring member 142 is formed in the long axis extends from the front side to the rear side in the two solar cells 150. It may have an extended structure.
  • the solar cells 150 may be connected to each other without overlapping portions to improve an area contributing to photoelectric conversion.
  • the mother solar cell can be formed using existing manufacturing equipment, and the wiring member 142 can be attached to the solar cell 150 using the existing tabbing equipment, thereby simplifying the manufacturing process.
  • the solar cell 150 may have a different structure and shape.
  • various materials known as the semiconductor substrate 160, the conductive regions 20 and 30, the electrodes 42 and 44, the first and second passivation films 22 and 32, the anti-reflection film 24, and the like may be used.
  • the configuration may be applied, and their positions, shapes, and the like may be variously modified.
  • a rear electrode structure other than the double-sided light receiving structure as described above may be applied.
  • the solar cell 150 may be connected to a member having various structures, for example, a ribbon or an interconnector.
  • the plurality of solar cells 150 includes one solar cell string in each body 10, a plurality of strings may be provided in each body 10.
  • the solar cell 150 may have various shapes or structures, such as a thin film solar cell, a semiconductor compound solar cell, a dye-sensitized solar cell, an amorphous solar cell, and the like.
  • the sealant 130 may include a first sealant 131 positioned on the front surface of the solar cell 150 connected by the wiring member 142, and a second sealant 132 positioned on the rear surface of the solar cell 150.
  • the first cover member 110 is disposed on the first seal member 131 to form the front surface of the main body 10
  • the second cover member 120 is positioned on the second seal member 132 to provide the main body 10. Configure the back of the.
  • the solar cell 150 may be sealed by the sealant 130, the first cover member 110, and the second cover member 120 to be protected from external shocks, moisture, ultraviolet rays, and the like.
  • Various insulating materials known as the sealant 130, the first cover member 110, and the second cover member 120 may be used.
  • an ethylene vinyl acetate copolymer resin (EVA), polyvinyl butyral, silicon resin, ester resin, olefin resin, or the like may be used as the sealing material 130.
  • the first or second cover members 110 and 120 may be made of a light transmitting material that can transmit light, and may be provided as a film or a sheet including a resin.
  • the solar cell module 100 may be suitably used as a louver structure, a railing structure, a sunshade structure, and the like by reducing the weight.
  • the present invention is not limited thereto, and at least one of the first and second cover members 110 and 120 may include a glass substrate, a non-transparent material, a reflective material, or the like. Many other variations are possible.
  • FIG. 6 is an enlarged partial plan view of a portion B of FIG. 2, and FIG. 7 is a schematic perspective view of the bypass diode 180 illustrated in FIG. 6.
  • each main body 10 may be provided with a bypass diode 180 built-in. This will be described in more detail later.
  • the some solar cell 150 is the 1st end solar cell 151 located adjacent to the 1st end part 10a in a 1st direction (x-axis direction of drawing), and a 1st And a second end solar cell 152 positioned adjacent to the second end 10b in the direction.
  • Each main body 10 has a first conductive connecting member 172 connected to the first electrode 42 of the first end solar cell 151 at the first end 10a side, and a second at the second end 10b side.
  • a second conductive connector 174 may be provided that is connected to the second electrode 44 of the end solar cell 152 and extends to a portion adjacent to the first end 10a.
  • the anode electrode 182 of the bypass diode 180 is connected to one of the first and second conductive connectors 172 and 174, and the cathode electrode 184 of the bypass diode 180 is connected to the first and second electrodes. It may be connected to the other of the conductive connectors 172, 174.
  • terms such as first and second are used only for differentiation from each other, but the present invention is not limited thereto.
  • the first conductive connector 172 is formed of an electrical and physical connection between the plurality of wiring members 142 connected to the first electrode 42 of the first end solar cell 151 toward the first end 10a.
  • a first terminal portion 172a may be provided, and the first terminal portion 172b may extend further from the first connection portion 172a to the outside.
  • the first connecting portion 172a may be formed in the second direction and the first terminal portion 172b may be formed in the first direction to be manufactured by a simple manufacturing process.
  • the first conductive connecting member 172 may be formed in a single structure including the first connecting portion 172a and the first terminal portion 172b integrally, thereby simplifying the structure.
  • the present invention is not limited thereto.
  • the second conductive connector 174 is a second connection portion in which the plurality of wiring members 142 connected to the second electrode 44 of the second end solar cell 152 are electrically and physically connected to the second end 10b. 174a and an extending portion 174c extending from the second connecting portion 174a to the first end 10a and further extending outwardly from the extending portion 174c. It can be provided.
  • the extended portion 174c may be positioned to be spaced apart from the plurality of solar cells 150 to prevent unwanted short circuits and the like.
  • the second connecting portion 174a is formed in the second direction and the second connecting portion 174a and the second terminal portion 174b are formed long along the first direction on the same line to simplify the structure.
  • the second conductive connecting member 174 may be formed in a single structure including the first connecting portion 172a, the extending portion 174c, and the second terminal portion 174b integrally and manufactured by a simple manufacturing process. .
  • the present invention is not limited thereto.
  • the first terminal portion 172b of the first conductive connecting member 172 and the second terminal portion 174b of the second conductive connecting member 174 pass through the first end 10a of the main body 10 to the outside. Since it extends and is positioned toward the first end 10a, the electrical connection structure with the other main body 10 can be simplified. There is no first and second terminal portion 174b for connection to the outside towards the second end 10b.
  • the second conductive connecting member 174 is provided only near one edge when viewed in the second direction, and the second conductive connecting member 174 is not provided near the other edge, and thus the conductive connecting members 172 and 174 are viewed in the second direction.
  • the second conductive connecting member 174 may be located near the edge of one side where the inclined portion (chamfer portion) 150a of the solar cell 150 is located.
  • the inclined portion 150a of the solar cell 150 when the inclined portion 150a of the solar cell 150 is installed as shown in FIG. 1A, the inclined portion 150a may be positioned at a portion that may overlap with the other main body 10. Then, the interference by the other main body 10 can be minimized and the part which can be covered by the other main body 10 can be effectively utilized.
  • the first and second conductive connectors 172 and 174 can include various known conductive materials (eg, metals). In consideration of stable current flow, the first and second conductive connectors 172 and 174 may have a larger width than the wiring member 142.
  • the bypass diode 180 may be installed inside the main body 10.
  • the bypass diode 180 may be provided in the main body 10 in its entire configuration constituting the bypass diode 180 to be embedded in each main body 10.
  • the cathode electrode 184 and the anode electrode 182 of the bypass diode 180 may be provided together in each main body 10.
  • the bypass diode 180 is positioned between the first sealing member 131 and the second sealing member 132 and is spaced apart from the plurality of solar cells 150, but the first and second conductive connectors 172 and 174 are separated from each other. It may be electrically connected to and physically connected to the plurality of solar cells 150.
  • the bypass diode 180 includes an p-type semiconductor layer and an n-type semiconductor layer, an anode electrode 182 connected to the p-type semiconductor layer, and a cathode electrode connected to the n-type semiconductor layer ( 184 may be configured as a semiconductor device.
  • An anode electrode 182 may be connected to one of the first and second conductive connectors 172 and 174, and a cathode electrode 184 may be connected to the other of the first and second conductive connectors 172 and 174.
  • the bypass diode 180 may be provided as a chip-shaped diode, and may have a different form, a different material, and the like from the solar cell 150, and the cathode electrode 184 and the anode electrode 182 may also be provided with the solar cell 150.
  • the first electrode 42 and the second electrode 44 of the () may be provided in a different form, different materials, and the like. Since the chip type diode has a thickness smaller than the width and width, the chip type diode may be stably positioned between the first sealing material 131 and the second sealing material 132 by a lamination process.
  • the ratio of the thickness T2 of the bypass diode 180 to the thickness T1 of the portion of the body 10 in which the bypass diode 180 is not located is two times or less, or the bypass diode 180
  • the thickness T2 may be 0.1 mm to 3 mm.
  • the bypass diode 180 may be stably embedded in the main body 10, but the present invention is not limited thereto.
  • the bypass diode 180 may have a vertical width or a horizontal width of 5 mm or less so as not to occupy a large area, but the present invention is not limited thereto.
  • the anode electrode 182 and the cathode electrode 184 of the bypass diode 180 may be connected to the first and second conductive connectors 172 and 174 by various methods, respectively.
  • the anode electrode 182 and the cathode electrode 184 of the bypass diode 180 may be directly soldered and connected to the first and second conductive connectors 172 and 174, respectively.
  • the bypass diode 180 may be formed at the portion adjacent to the first end portion 10a at which the first connecting portion 172a of the first conductive connecting member 172 is located. It is illustrated that the extension portion 174c is located adjacent to one side edge where it is located. That is, the bypass diode 180 may be located near the edge of the main body 10 where the first and second conductive connecting members 172 and 174 are adjacent to each other. Then, the structures of the first conductive connecting member 172 and the second conductive connecting member 174 can be simplified. However, the present invention is not limited thereto. Therefore, a plurality of bypass diodes 180 may be provided in each main body 10.
  • the bypass diode 180 may be embedded in the main body 10 to simplify the structure of the solar cell module 100.
  • the main body 10 having a relatively small output as in the present embodiment is difficult to use the conventional bypass diode or / and junction box by miniaturization, the bypass diode 180 in each main body 10 ) To simplify the structure and minimize the volume.
  • bypass diodes 180 are provided in each of the main bodies 10, only the amount of power generated by the main body 10 that does not generate power is reduced, thereby minimizing the amount of power generated.
  • the solar cell module 100 including a plurality of the above-described main body 10 will be described in detail with reference to FIG. 8.
  • FIG. 8 is a schematic configuration diagram illustrating a plurality of main bodies 10 included in the solar cell module 100 illustrated in FIG. 1 and unfolded together with the micro inverter 200.
  • examples of the polarities (ie, (+) and ( ⁇ )) of the conductive connectors 172 and 174 and the micro inverter 30 are illustrated for convenience of understanding, but the present invention is not limited thereto.
  • the solar cell module 100 may include a plurality of main bodies 10, and the solar cells 150 included in the plurality of main bodies 10 may be connected to each other.
  • each body 10 may have a relatively small output (for example, 10W or more, for example, 10W to 40W).
  • the output of the main body 10 is less than 10 W, the amount of power generation is small, and even if the main body 10 is provided, it may not be provided with a desired sufficient amount of power generation.
  • the output of the main body 10 exceeds 40W, the size or length of the main body 10 may increase, which may lower structural stability or may be difficult to install in a narrow space.
  • the main body 10 may have a desired output by having a plurality of solar cells 150 in consideration of the output of the solar cell 150.
  • four or more solar cells 150 may be provided (for example, four or more and six or less), and the plurality of solar cells 150 may be connected in series to have a desired output.
  • the main body 10 having a plurality of solar cells 150 connected in series may have a power generation amount proportional to the number of solar cells 150.
  • the solar cell module 100 may be provided with a plurality of the main body 10 to have a sufficient output desired. That is, when a plurality of the main body 10 having a relatively small output is connected in series to have a desired output, the amount of power generation increases in proportion to the number of the main body 10. Therefore, it is possible to adjust the number of the main body 10 to have a desired amount of power generation. According to this, the solar cell module 100 can be formed in various structures and can be formed to be used for various positions and various purposes. In addition, since photoelectric conversion is performed using each main body 10 as a basic unit, in case of shadows or defects, current does not flow only to the solar cell 150 of the main body 10 through the bypass diode 180. . Therefore, only the amount of power generated corresponding to the solar cell 150 located in the main body 10 is reduced. Accordingly, it is possible to effectively reduce problems such as reduced power generation and hot spots, which may be caused by shadows or defects.
  • the plurality of main bodies 10 may be electrically connected by various methods.
  • the first conductive connecting member 172 of the main body 10 of the plurality of main bodies 10 may be connected to the second conductive connecting member 174 of the main body 10 adjacent thereto.
  • the first and second conductive connecting members 172 and 174 having different polarities of the neighboring main bodies 10 may be sequentially connected at one side, and the plurality of main bodies 10 may be connected in series. Then, the connection structure can be simplified and the space required for the connection can be minimized.
  • the first conductive connecting member 172 and the second conductive connecting member 174 of the main body 10 adjacent to each other may be connected to each other by the third conductive connecting member 176.
  • the third conductive connector 176 may have the same material or structure as or different from the first and / or second conductive connector 172 and 174, and may be formed by the first and second conductive connector 172 by various methods. 174).
  • both ends of the third conductive connector 176 may be directly soldered and connected to the first and second conductive connector 172 and 174, respectively.
  • the present invention is not limited thereto, and the third conductive connector 176 extends from the first or second conductive connector 172 and 174 to form part of the first or second conductive connector 172 and 174. May be Alternatively, the third conductive connector 176 may be an electric cable.
  • the first conductive connecting member 172 and the second conductive connecting member 174 positioned at both sides of the solar cell module 100 may be connected to one terminal and the other terminal of the micro inverter 200, respectively.
  • the first conductive connecting member 172 and the second conductive connecting member 174 may be connected to the micro inverter 200 by the fourth conductive connecting member 178.
  • the fourth conductive connecting member 178 may have the same or different material or structure from at least one of the first to third conductive connecting members 172, 174, and 176, and may be formed by the first and second conductive connecting members in various ways. 172, 174.
  • the fourth conductive connecting member 178 may be directly soldered to the first and second conductive connecting members 172 and 174, respectively.
  • the present invention is not limited thereto, and the fourth conductive connecting member 178 extends from the first or second conductive connecting member 172 and 174 to form part of the first or second conductive connecting member 172 and 174. May be Alternatively, the fourth conductive connecting member 178 may be an electric cable.
  • the micro inverter 200 a micro inverter having a capacity capable of processing a power generation amount according to the number of the main bodies 10 may be used.
  • the micro inverter 200 may have a capacity of 200W to 300W.
  • the present invention is not limited thereto. Therefore, since the power generation amount of the solar cell module 100 can be increased according to the number of the main bodies 10 and has infinite expandability, it can have a large-capacity micro inverter corresponding thereto.
  • the micro inverter 200 may be used for the solar cell module 100 and may have various known structures.
  • One micro inverter 200 may be provided or may be provided in plurality in some cases.
  • the micro inverter 200 may be installed at various positions, verandas, walls, terminal boxes, fixing parts of the solar cell module 100, and the like.
  • the extension portion 174c of the second conductive connecting member 174 is positioned toward the front.
  • the present invention is not limited thereto, and a portion corresponding to the extended portion 174c may be folded along the fold line BL shown in FIG. 9 so that the portion where the extended portion 174c is located is located at the rear side.
  • the folding process by the fold line BL may be performed after the lamination process of the sealing member 130 and the first and second cover members 110 and 120, and is connected to the solar cell 150 before the lamination process. It can be performed in.
  • the solar cell 150 When performing a folding process performed before the lamination process, in order to prevent unnecessary short-circuit with other parts of the solar cell 150, the first conductive connector 172, and the second conductive connector 174, the solar cell 150 An insulating layer may be positioned between the back surface of the back panel) and the extension portion 174b. Many other variations are possible.

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

Abstract

Un module de cellule solaire selon un mode de réalisation de la présente invention comprend au moins un corps principal s'étendant de façon à être long dans une première direction, le corps principal comprenant : une pluralité de cellules solaires connectées dans la première direction ; et une diode de dérivation connectée électriquement à la pluralité de cellules solaires et disposée au niveau du corps principal. Le corps principal peut en outre comprendre : un premier élément de couvercle situé sur un premier côté de surface de la pluralité de cellules solaires ; un second élément de couvercle situé sur un second côté de surface de la pluralité de cellules solaires ; et un élément d'étanchéité pour sceller la pluralité de cellules solaires entre le premier élément de couvercle et le second élément de couvercle.
PCT/KR2019/007259 2018-06-25 2019-06-17 Module de cellules solaires WO2020004847A1 (fr)

Applications Claiming Priority (2)

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KR10-2018-0072785 2018-06-25
KR1020180072785A KR20200000677A (ko) 2018-06-25 2018-06-25 태양 전지 모듈

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WO2020004847A1 true WO2020004847A1 (fr) 2020-01-02

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EP3920411A4 (fr) * 2020-02-17 2023-01-18 Hengdian Group DMEGC Magnetics Co., Ltd. Lame photovoltaïque à obturateur

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KR102538958B1 (ko) * 2022-07-18 2023-06-01 주식회사 솔란드 롤러블 태양광 모듈

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KR20110022958A (ko) * 2009-08-28 2011-03-08 한국전자통신연구원 태양전지를 이용한 차양 장치
US20120006483A1 (en) * 2010-07-01 2012-01-12 7Ac Technologies, Inc. Methods for Interconnecting Solar Cells
JP2014095233A (ja) * 2012-11-09 2014-05-22 Mitsubishi Chemicals Corp 縦型ブラインド
KR20180000898A (ko) * 2016-06-24 2018-01-04 정준석 태양광발전모듈루버를 구비한 루버창호
US20180076762A1 (en) * 2016-09-09 2018-03-15 David R. Hall Photovoltaic Modular System

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KR20110022958A (ko) * 2009-08-28 2011-03-08 한국전자통신연구원 태양전지를 이용한 차양 장치
US20120006483A1 (en) * 2010-07-01 2012-01-12 7Ac Technologies, Inc. Methods for Interconnecting Solar Cells
JP2014095233A (ja) * 2012-11-09 2014-05-22 Mitsubishi Chemicals Corp 縦型ブラインド
KR20180000898A (ko) * 2016-06-24 2018-01-04 정준석 태양광발전모듈루버를 구비한 루버창호
US20180076762A1 (en) * 2016-09-09 2018-03-15 David R. Hall Photovoltaic Modular System

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3920411A4 (fr) * 2020-02-17 2023-01-18 Hengdian Group DMEGC Magnetics Co., Ltd. Lame photovoltaïque à obturateur

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