WO2015098203A1 - 太陽電池モジュール - Google Patents
太陽電池モジュール Download PDFInfo
- Publication number
- WO2015098203A1 WO2015098203A1 PCT/JP2014/074396 JP2014074396W WO2015098203A1 WO 2015098203 A1 WO2015098203 A1 WO 2015098203A1 JP 2014074396 W JP2014074396 W JP 2014074396W WO 2015098203 A1 WO2015098203 A1 WO 2015098203A1
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- WO
- WIPO (PCT)
- Prior art keywords
- solar cell
- wiring member
- electrically connected
- wiring
- terminal box
- Prior art date
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- 239000000463 material Substances 0.000 claims abstract description 27
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000000945 filler Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 8
- 238000010248 power generation Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—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.
- a bypass diode is connected in parallel with the solar cell group.
- the solar cell group is electrically bypassed by a bypass diode. This prevents the reverse bias voltage from being applied to the solar cell group in which a failure or the like has occurred, and power is generated by the remaining solar cell group.
- a bypass diode is generally disposed in a terminal box provided in the solar cell module.
- Patent Document 1 a solar cell module is provided with a plurality of terminal boxes, one bypass diode is arranged in each terminal box, and the temperature in the terminal box is prevented from rising due to heat generated from the plurality of bypass diodes. ing.
- a solar cell module as described in Patent Document 1 performs maximum power point tracking (MPPT) control and outputs generated electric power.
- MPPT maximum power point tracking
- An object of the present invention is to provide a solar cell module capable of increasing the number of solar cell subgroups while suppressing an increase in the area of the solar cell module.
- the solar cell module of the present invention includes a first solar cell group in which a plurality of solar cells are connected by a wiring material, a second solar cell group in which a plurality of solar cells are connected by a wiring material, and the first solar cell group.
- a surface member disposed on the surface side of the solar cell group and the second solar cell group, a back member disposed on the back surface side of the first solar cell group and the second solar cell group, and the back surface At least one first terminal box provided on the back side of the member; at least one second terminal box provided on the back side of the back member; provided on the back side of the back member; And external wiring for electrically connecting at least one of the terminal boxes and at least one of the second terminal boxes.
- the number of solar cell subgroups can be increased while suppressing an increase in the area of the solar cell module.
- FIG. 1 is a schematic plan view showing the solar cell module of the first embodiment.
- FIG. 2 is a schematic cross-sectional view showing the solar cell module of the first embodiment.
- FIG. 3 is a schematic plan view showing the solar cell module of the second embodiment.
- FIG. 4 is a schematic plan view showing the solar cell module of the third embodiment.
- FIG. 5 is a schematic plan view showing a solar cell module of a comparative example.
- FIG. 1 is a schematic plan view showing the solar cell module of the first embodiment.
- the solar cell module 7 of the present embodiment has a first solar cell group 101 and a second solar cell group 102.
- the first solar cell group 101 has five first solar cell strings 8, 9, 10, 11, and 12.
- the second solar cell group 102 has five second solar cell strings 15, 16, 17, 18 and 19. Accordingly, the first solar cell group 101 and the second solar cell group 102 have an odd number of first solar cell strings and second solar cell strings, respectively.
- the first solar cell strings 8, 9 form one solar cell subgroup.
- Each solar cell string is configured by electrically connecting a plurality of solar cells 1 arranged in the y direction with a first wiring member 4.
- Finger electrodes 6 are formed on the front and back surfaces of each solar cell 1.
- the first wiring member 4 is electrically connected to the finger electrode 6.
- a bus bar electrode that is electrically connected to the finger electrode 6 may be provided in a direction crossing the finger electrode 6. When the bus bar electrode is provided, the bus bar electrode and the first wiring member 4 are electrically connected.
- FIG. 2 is a schematic cross-sectional view showing the solar cell module of the first embodiment.
- FIG. 2 shows a schematic cross-sectional view along the first wiring member 4 of the first solar cell string 8.
- the first wiring member 4 electrically connects the finger electrode 6 on the back surface 1 b of one solar cell 1 and the finger electrode on the surface 1 a of the other solar cell 1 between adjacent solar cells 1. It is provided so that it may connect.
- the finger electrode 6 on the back surface 1b and the finger electrode on the front surface 1a are not shown.
- the other first solar cell strings 9, 10, 11, and 12 and the second solar cell strings 15, 16, 17, 18, and 19 are also the same as the first solar cell string 8.
- the solar cell 1 is electrically connected.
- a transparent surface member 2 is provided on the surface 1 a side of the solar cell 1.
- the surface 1a of the solar cell 1 is a light receiving surface.
- the transparent surface member 2 can be formed from glass etc., for example.
- a back surface member 3 is provided on the back surface 1 b side of the solar cell 1.
- the back member 3 can be formed from, for example, a resin.
- the surface 1 a side of the solar cell 1 is the surface side of the first solar cell group 101 and the second solar cell group 102.
- the back surface 1 b side of the solar cell 1 is the back surface side of the first solar cell group 101 and the second solar cell group 102.
- the filler layer 5 can be formed from a crosslinkable resin such as ethylene / vinyl acetate copolymer (EVA) or an olefin-based non-crosslinkable resin.
- the filler layer 5 includes a filler layer 5a on the surface member 2 side,. And a filler layer 5b on the back member 3 side.
- the filler layer 5b may include a reflection member for reflecting light incident from the surface member 2 side.
- a white pigment such as titanium oxide may be included in the filler layer 5b as a reflecting member.
- the first solar cell group 101 includes five first solar cell strings 8, 9, 10, 11, and 12 arranged in the x direction and second wiring members 31, 32, 33, 35 and 36 are electrically connected.
- the second solar cell group 102 five second solar cell strings 15, 16, 17, 18 and 19 arranged in the x direction are electrically connected by the second wiring members 37, 38, 39, 40 and 41. It is configured by connecting them together. Therefore, in this embodiment, the 1st solar cell group 101 has a plurality of 1st solar cell strings which consist of a plurality of solar cells connected by the 1st wiring material 4, and a plurality of 1st solar cells The battery strings are connected by a second wiring material.
- the second solar cell group 102 has a second solar cell string composed of a plurality of solar cells connected by the first wiring member 4, and the second solar cell string has a second space between the second solar cell strings. Connected by wiring material.
- the third wiring member 34 is electrically connected. Therefore, in this embodiment, the 1st solar cell group 101 and the 2nd solar cell group 102 have an odd number of 1st solar cell strings and 2nd solar cell strings, respectively, and are located in one end.
- the first solar cell string and the second solar cell string are connected by a third wiring material.
- the one end in the y direction of the first solar cell string 8 is electrically connected to the second wiring member 31 by the first wiring member 4.
- the other end in the y direction of the first solar cell string 8 is electrically connected to the second wiring member 36 by the first wiring member 4.
- One end in the y direction of the first solar cell string 9 is electrically connected to the second wiring member 32 by the first wiring member 4.
- the other end in the y direction of the first solar cell string 9 is electrically connected to the second wiring member 36 by the first wiring member 4.
- the one end in the y direction of the first solar cell string 10 is electrically connected to the second wiring member 32 by the first wiring member 4.
- the other end in the y direction of the first solar cell string 10 is electrically connected to the second wiring member 35 by the first wiring member 4.
- One end of the first solar cell string 11 in the y direction is electrically connected to the second wiring member 33 by the first wiring member 4.
- the other end in the y direction of the first solar cell string 11 is electrically connected to the second wiring member 35 by the first wiring member 4.
- the one end in the y direction of the first solar cell string 12 is electrically connected to the second wiring member 33 by the first wiring member 4.
- the other end in the y direction of the first solar cell string 12 is electrically connected to the third wiring member 34 by the first wiring member 4.
- One end of the second solar cell string 15 in the y direction is electrically connected to the third wiring member 34 by the first wiring member 4.
- the other end of the second solar cell string 15 in the y direction is electrically connected to the second wiring member 39 by the first wiring member 4.
- the one end in the y direction of the second solar cell string 16 is electrically connected to the second wiring member 38 by the first wiring member 4.
- the other end of the second solar cell string 16 in the y direction is electrically connected to the second wiring member 39 by the first wiring member 4.
- One end of the second solar cell string 17 in the y direction is electrically connected to the second wiring member 38 by the first wiring member 4.
- the other end of the second solar cell string 17 in the y direction is electrically connected to the second wiring member 40 by the first wiring member 4.
- the one end in the y direction of the second solar cell string 18 is electrically connected to the second wiring member 37 by the first wiring member 4.
- the other end of the second solar cell string 18 in the y direction is electrically connected to the second wiring member 40 by the first wiring member 4.
- One end of the second solar cell string 19 in the y direction is electrically connected to the second wiring member 37 by the first wiring member 4.
- the other end of the second solar cell string 19 in the y direction is electrically connected to the second wiring member 41 by the first wiring member 4.
- a first terminal box 21 and a second terminal box 22 are provided on the back surface 3a (see FIG. 2) side of the back member 3.
- the first terminal box 21 is provided at a position overlapping the first solar cell group 101.
- the second terminal box 22 is provided at a position overlapping the second solar cell group 102.
- the 1st terminal box 21 and the 2nd terminal box 22 are provided so that it may overlap with the solar cell 1 located in the peripheral part of the solar cell module 7.
- the first terminal box 21 includes bypass diodes 30a, 30b and 30c.
- the second terminal box 22 includes bypass diodes 30d and 30e. Therefore, in this embodiment, at least one bypass diode is included in at least one of the first terminal box 21 and the second terminal box 22. In addition, a plurality of bypass diodes are included in at least one of the first terminal box 21 and the second terminal box 22.
- the bypass diode 30 a is electrically connected between the second wiring member 31 and the second wiring member 32. Therefore, the bypass diode 30a is electrically connected in parallel with the solar cell subgroup formed by the first solar cell strings 8 and 9 connected in series via the second wiring member 36.
- the bypass diode 30 b is electrically connected between the second wiring member 32 and the second wiring member 33. Therefore, the bypass diode 30b is electrically connected in parallel with the solar cell subgroup formed by the first solar cell strings 10 and 11 connected in series via the second wiring member 35.
- the bypass diode 30 d is electrically connected between the second wiring member 39 and the second wiring member 40. Therefore, the bypass diode 30d is electrically connected in parallel with the solar cell subgroup formed by the second solar cell strings 16 and 17 connected in series via the second wiring member 38.
- the bypass diode 30 e is electrically connected between the second wiring member 40 and the second wiring member 41. Therefore, the bypass diode 30 e is electrically connected in parallel with the solar cell subgroup formed by the second solar cell strings 18 and 19 connected in series via the second wiring member 37.
- External wiring 20 is provided to connect the first terminal box 21 and the second terminal box 22.
- the external wiring 20 is provided on the back surface 3 a (see FIG. 2) side of the back surface member 3.
- the negative terminal of the bypass diode 30 c is electrically connected to the second wiring member 33, and the positive terminal is electrically connected to one end of the external wiring 20.
- the other end of the external wiring 20 is connected to the negative terminal of the bypass diode 30 d of the second terminal box 22. Therefore, the bypass diode 30 c is electrically in parallel with the solar cell subgroup formed by the first solar cell string 12 and the second solar cell string 15 connected in series via the third wiring member 34. It is connected to the.
- the solar cell subgroup formed by the first solar cell string 12 and the second solar cell string 15 is provided across the first solar cell group 101 and the second solar cell group 102.
- the solar cell subgroup provided across the first solar cell group 101 and the second solar cell group 102 is in parallel with the bypass diode 30 c provided in the first terminal box 21 and the external wiring 20. Connected to.
- the minus terminal of the bypass diode 30 a is electrically connected to the second wiring member 31, and the plus terminal is electrically connected to the second wiring member 32.
- the minus terminal of the bypass diode 30 b is electrically connected to the second wiring member 32, and the plus terminal is electrically connected to the second wiring member 33.
- the minus terminal of the bypass diode 30 d is electrically connected to the second wiring member 39, and the plus terminal is electrically connected to the second wiring member 40.
- the minus terminal of the bypass diode 30 e is electrically connected to the second wiring member 40, and the plus terminal is electrically connected to the second wiring member 41. Therefore, each bypass diode is connected so that a reverse bias voltage is not applied from the other solar cell string to the solar cell string connected in parallel with each bypass diode.
- the number of solar cells in the solar cell string connected in parallel with each bypass diode is eight. It is a piece.
- the 1st solar cell string 8 and the 2nd solar cell string 19 are connected in series with wiring material 4, and the 1st solar cell group
- the battery string 9 and the second solar cell string 18 are connected in series by the wiring member 4, the number of solar cells in the solar cell string connected in parallel with the bypass diode 30a is 16.
- the number of solar cells in the solar cell string connected in parallel with each bypass diode can be reduced. For this reason, the number of solar cells that cannot contribute to the output of the solar cell module can be reduced even if a part of the solar cells of the solar cell group enters into the shade, so that power generation is not possible. A decrease in the output of the battery module can be suppressed.
- the first terminal box 21 and the second terminal box 22 are electrically connected by the external wiring 20, a new region is sandwiched between the front surface member 2 and the back surface member 3. It is not necessary to make a space for providing a wiring material. Therefore, an increase in the area of the solar cell module can be suppressed.
- the present embodiment will be described as a representative example of the embodiment when the first solar cell group 101 and the second solar cell group 102 have an odd number of first solar cell strings and second solar cell strings, respectively. is doing. For example, even when the first solar cell group 101 and the second solar cell group 102 each have seven first solar cell strings and second solar cell strings, similarly to the present embodiment, x The first solar cell string and the second solar cell string located at one end in the direction can be connected by the third wiring member.
- FIG. 3 is a schematic plan view showing the solar cell module of the second embodiment.
- the solar cell module 7 of the present embodiment has a first solar cell group 101 and a second solar cell group 102.
- the first solar cell group 101 of the present embodiment has six first solar cell strings 8, 9, 10, 11, 12, and 13.
- the second solar cell group 102 has six second solar cell strings 14, 15, 16, 17, 18 and 19.
- the one end in the y direction of the first solar cell string 8 is electrically connected to the second wiring member 51 by the first wiring member 4.
- the other end in the y direction of the first solar cell string 8 is electrically connected to the second wiring member 57 by the first wiring member 4.
- One end in the y direction of the first solar cell string 9 is electrically connected to the second wiring member 52 by the first wiring member 4.
- the other end of the first solar cell string 9 in the y direction is electrically connected to the second wiring member 57 by the first wiring member 4.
- the one end in the y direction of the first solar cell string 10 is electrically connected to the second wiring member 52 by the first wiring member 4.
- the other end in the y direction of the first solar cell string 10 is electrically connected to the second wiring member 56 by the first wiring member 4.
- One end of the first solar cell string 11 in the y direction is electrically connected to the second wiring member 53 by the first wiring member 4.
- the other end in the y direction of the first solar cell string 11 is electrically connected to the second wiring member 56 by the first wiring member 4.
- the one end in the y direction of the first solar cell string 12 is electrically connected to the second wiring member 53 by the first wiring member 4.
- the other end in the y direction of the first solar cell string 12 is electrically connected to the second wiring member 55 by the first wiring member 4.
- One end in the y direction of the first solar cell string 13 is electrically connected to the second wiring member 54 by the first wiring member 4.
- the other end in the y direction of the first solar cell string 13 is electrically connected to the second wiring member 55 by the first wiring member 4.
- the one end in the y direction of the second solar cell string 14 is electrically connected to the second wiring member 60 by the first wiring member 4.
- the other end in the y direction of the second solar cell string 14 is electrically connected to the second wiring member 61 by the first wiring member 4.
- One end of the second solar cell string 15 in the y direction is electrically connected to the second wiring member 60 by the first wiring member 4.
- the other end in the y direction of the second solar cell string 15 is electrically connected to the second wiring member 62 by the first wiring member 4.
- the one end in the y direction of the second solar cell string 16 is electrically connected to the second wiring member 59 by the first wiring member 4.
- the other end of the second solar cell string 16 in the y direction is electrically connected to the second wiring member 62 by the first wiring member 4.
- One end of the second solar cell string 17 in the y direction is electrically connected to the second wiring member 59 by the first wiring member 4.
- the other end in the y direction of the second solar cell string 17 is electrically connected to the second wiring member 63 by the first wiring member 4.
- the one end in the y direction of the second solar cell string 18 is electrically connected to the second wiring member 58 by the first wiring member 4.
- the other end in the y direction of the second solar cell string 18 is electrically connected to the second wiring member 63 by the first wiring member 4.
- One end of the second solar cell string 19 in the y direction is electrically connected to the second wiring member 58 by the first wiring member 4.
- the other end in the y direction of the second solar cell string 19 is electrically connected to the second wiring member 64 by the first wiring member 4.
- a first terminal box 23a and a second terminal box 23d are provided on the back surface 3a (see FIG. 2) side of the back member 3.
- the first terminal box 23 a is provided at a position overlapping the first solar cell group 101.
- the second terminal box 23 d is provided at a position overlapping the second solar cell group 102.
- the first terminal box 23 a and the second terminal box 23 d are provided so as to overlap the solar cell 1 located at the peripheral edge of the solar cell module 7.
- the first terminal box 23a includes bypass diodes 30a, 30b and 30c.
- the second terminal box 23d includes bypass diodes 30d, 30e, and 30f. Therefore, also in this embodiment, at least one bypass diode is included in at least one of the first terminal box 23a and the second terminal box 23d. In addition, a plurality of bypass diodes are included in at least one of the first terminal box 23a and the second terminal box 23d.
- the bypass diode 30 a is electrically connected between the second wiring member 51 and the second wiring member 52. Therefore, the bypass diode 30a is electrically connected in parallel with the solar cell subgroup formed by the first solar cell strings 8 and 9 connected in series via the second wiring member 57.
- the bypass diode 30 b is electrically connected between the second wiring member 52 and the second wiring member 53. Therefore, the bypass diode 30 b is electrically connected in parallel with the solar cell subgroup formed by the first solar cell strings 10 and 11 connected in series via the second wiring member 56.
- the bypass diode 30 c is electrically connected between the second wiring member 53 and the second wiring member 54. Therefore, the bypass diode 30 c is electrically connected in parallel with the solar cell subgroup formed by the first solar cell strings 12 and 13 connected in series via the second wiring member 55.
- the bypass diode 30d is electrically connected between the second wiring member 61 and the second wiring member 62. Therefore, the bypass diode 30d is electrically connected in parallel with the solar cell subgroup formed by the second solar cell strings 14 and 15 connected in series via the second wiring member 60.
- the bypass diode 30 e is electrically connected between the second wiring member 62 and the second wiring member 63. Therefore, the bypass diode 30e is electrically connected in parallel with the solar cell subgroup formed by the second solar cell strings 16 and 17 connected in series via the second wiring member 59.
- the bypass diode 30 f is electrically connected between the second wiring member 63 and the second wiring member 64. Therefore, the bypass diode 30 f is electrically connected in parallel with the solar cell subgroup formed by the second solar cell strings 18 and 19 connected in series via the second wiring member 58.
- External wiring 20 is provided to connect the first terminal box 23a and the second terminal box 23d.
- the external wiring 20 is provided on the back surface 3 a (see FIG. 2) side of the back surface member 3.
- One end of the external wiring 20 is connected to the bypass diode 30c of the first terminal box 23a.
- the other end of the external wiring 20 is connected to the bypass diode 30d of the second terminal box 23d.
- each bypass diode is connected so that a reverse bias voltage is not applied to the solar cell string connected in parallel with each bypass diode from other solar cell strings.
- the number of solar cells in the solar cell string connected in parallel with each bypass diode is determined. Can be reduced. For this reason, the number of solar cells that cannot contribute to the output of the solar cell module can be reduced even if a part of the solar cells of the solar cell group enters into the shade, so that power generation is not possible. A decrease in the output of the battery module can be suppressed.
- FIG. 5 is a schematic plan view showing a solar cell module of a comparative example.
- this comparative example includes a first solar cell group 101 having six first solar cell strings 8, 9, 10, 11, 12, and 13, and six second solar cells.
- one bypass diode is provided in one terminal box. Therefore, the three first terminal boxes 23 a, 23 b, and 23 c overlap the first solar cell group 101 on the back surface 3 a (see FIG. 2) side of the back surface member 3 of the first solar cell group 101. In the position. Similarly, on the back surface 3 a side of the back surface member 3 of the second solar cell group 102, three second terminal boxes 23 d, 23 e, and 23 f are provided at positions that overlap with the second solar cell group 102. Yes.
- the first terminal boxes 23a, 23b, and 23c include bypass diodes 30a, 30b, and 30c, respectively, so that one bypass diode is provided in one terminal box.
- the second terminal boxes 23d, 23e, and 23f include bypass diodes 30d, 30e, and 30f, respectively, so that one bypass diode is provided in one terminal box.
- a wiring member 200 is provided to connect the first terminal box 23c and the second terminal box 23d located at one end in the x direction.
- the wiring member 200 is provided in the same manner as the second wiring members 51 to 64.
- One end of the wiring member 200 is connected to the bypass diode 30c of the first terminal box 23c.
- the other end of the wiring member 200 is connected to the bypass diode 30d of the second terminal box 23d.
- the bypass diode 30 a is electrically connected between the second wiring member 51 and the second wiring member 52. Therefore, the bypass diode 30 a is electrically connected in parallel with the first solar cell strings 8 and 9 connected in series via the second wiring member 57.
- the bypass diode 30 b is electrically connected between the second wiring member 52 and the second wiring member 53. Therefore, the bypass diode 30 b is electrically connected in parallel with the first solar cell strings 10 and 11 connected in series via the second wiring member 56.
- the bypass diode 30 c is electrically connected between the second wiring member 53 and the wiring member 200. Therefore, the bypass diode 30 c is electrically connected in parallel with the second solar cell strings 12 and 13 connected in series via the second wiring member 55.
- the bypass diode 30d is electrically connected between the wiring member 200 and the second wiring member 62. Therefore, the bypass diode 30d is electrically connected in parallel with the second solar cell strings 14 and 15 connected in series via the second wiring member 60.
- the bypass diode 30 e is electrically connected between the second wiring member 62 and the second wiring member 63. Therefore, the bypass diode 30e is electrically connected in parallel with the second solar cell strings 16 and 17 connected in series via the second wiring member 59.
- the bypass diode 30 f is electrically connected between the second wiring member 63 and the second wiring member 64. Therefore, the bypass diode 30 f is electrically connected in parallel with the second solar cell strings 18 and 19 connected in series via the second wiring member 58.
- the wiring member 200 is arrange in a region sandwiched between the front surface member 2 and the back surface member 3, and the area of the solar cell module 201 is increased. To do. In order not to increase the area of the solar cell module 201, it is conceivable to arrange the wiring member 200 in a region where the solar cell 1 is provided. In this case, the wiring material 200 is arrange
- a sheet serving as the filler layer 5a on the surface member 2 side is placed on the surface member 2, and a solar cell connected by a wiring material is placed on the sheet, and on the sheet.
- a sheet serving as the filler layer 5b on the back member 3 side is placed, and the back member 3 is placed thereon to produce a laminate, and pressure is applied to the laminate to produce a solar cell module. If the wiring material 200 exists at a position overlapping with the solar cell 1 when this pressure is applied, the wiring material 200 comes into contact with the solar cell 1 and concentrates on the solar cell 1 and a load is applied. For this reason, cell cracks may occur in the solar cell 1.
- the wiring member 200 In order to prevent such a cell crack of the solar cell 1, the wiring member 200 needs to be arranged in an area where the solar cell 1 is not provided. For this reason, like the solar cell module 201 of the comparative example, when the first terminal box 23c and the second terminal box 23d are connected by the wiring member 200, a space for providing the wiring member 200 is required. The area of the solar cell module 201 increases.
- the first terminal box 23c and the second terminal box 23d are electrically connected by the external wiring 20, a space for providing a new wiring material in the solar cell module is provided. There is no need to make. Therefore, an increase in the area of the solar cell module can be suppressed.
- FIG. 4 is a schematic plan view showing the solar cell module of the third embodiment.
- the first solar cell group 101, the second solar cell group 102, and the third solar cell group 103 are arranged in the x direction.
- the first solar cell group 101 has three first solar cell strings 8, 9 and 10.
- the second solar cell group 102 has four second solar cell strings 14, 15, 16 and 17.
- the third solar cell group 103 has three third solar cell strings 42, 43 and 44.
- the first solar cell group 101 is configured by electrically connecting three first solar cell strings 8, 9, and 10 arranged in the x direction with second wiring members 71, 72, and 81. ing.
- the second solar cell group 102 is formed by electrically connecting the four second solar cell strings 14, 15, 16 and 17 arranged in the x direction with the second wiring members 73, 74 and 79. It is configured.
- the third solar cell group 103 is configured by electrically connecting three third solar cell strings 42, 43, and 44 arranged in the x direction with second wiring members 75, 76, and 77. ing.
- the first solar cell string 10 of the first solar cell group 101 and the second solar cell string 14 of the second solar cell group 102 are electrically connected by a second wiring member 80.
- the second solar cell string 17 of the second solar cell group 102 and the third solar cell string 42 of the third solar cell group 103 are electrically connected by a second wiring member 78. .
- the one end in the y direction of the first solar cell string 8 is electrically connected to the second wiring member 71 by the first wiring member 4.
- the other end in the y direction of the first solar cell string 8 is electrically connected to the second wiring member 81 by the first wiring member 4.
- One end in the y direction of the first solar cell string 9 is electrically connected to the second wiring member 72 by the first wiring member 4.
- the other end in the y direction of the first solar cell string 9 is electrically connected to the second wiring member 81 by the first wiring member 4.
- One end in the y direction of the first solar cell string 10 is electrically connected to the second wiring member 72 by the first wiring member 4.
- the other end in the y direction of the first solar cell string 10 is electrically connected to the second wiring member 80 by the first wiring member 4.
- the one end of the second solar cell string 14 in the y direction is electrically connected to the second wiring member 73 by the first wiring member 4.
- the other end in the y direction of the second solar cell string 14 is electrically connected to the second wiring member 80 by the first wiring member 4.
- One end of the second solar cell string 15 in the y direction is electrically connected to the second wiring member 73 by the first wiring member 4.
- the other end of the second solar cell string 15 in the y direction is electrically connected to the second wiring member 79 by the first wiring member 4.
- the one end in the y direction of the second solar cell string 16 is electrically connected to the second wiring member 74 by the first wiring member 4.
- the other end of the second solar cell string 16 in the y direction is electrically connected to the second wiring member 79 by the first wiring member 4.
- One end in the y direction of the second solar cell string 17 is electrically connected to the second wiring member 74 by the first wiring member 4.
- the other end of the second solar cell string 17 in the y direction is electrically connected to the second wiring member 78 by the first wiring member 4.
- the one end in the y direction of the third solar cell string 42 is electrically connected to the second wiring member 75 by the first wiring member 4.
- the other end of the third solar cell string 42 in the y direction is electrically connected to the second wiring member 78 by the first wiring member 4.
- One end of the third solar cell string 43 in the y direction is electrically connected to the second wiring member 75 by the first wiring member 4.
- the other end of the third solar cell string 43 in the y direction is electrically connected to the second wiring member 77 by the first wiring member 4.
- One end of the third solar cell string 44 in the y direction is electrically connected to the second wiring member 76 by the first wiring member 4.
- the other end in the y direction of the third solar cell string 44 is electrically connected to the second wiring member 77 by the first wiring member 4.
- the first terminal box 24 is provided at a position overlapping the first solar cell group 101 on the back surface 3 a (see FIG. 2) side of the back surface member 3 of the first solar cell group 101. It has been.
- a second terminal box 25 is provided at a position overlapping the second solar cell group 102 on the back surface 3 a side of the back surface member 3 of the second solar cell group 102.
- a third terminal box 26 is provided at a position overlapping the third solar cell group 103.
- each terminal box is provided so that it may overlap with the solar cell 1 located in the peripheral part of the solar cell module 7.
- the first terminal box 24 includes bypass diodes 30a and 30b.
- the second terminal box 25 includes bypass diodes 30c and 30d.
- the third terminal box 26 includes a bypass diode 30e.
- External wiring 20 is provided to connect the first terminal box 24 and the second terminal box 25.
- the external wiring 20 is provided on the back surface 3 a (see FIG. 2) side of the back surface member 3.
- One end of the external wiring 20 is connected to the bypass diode 30 b of the first terminal box 24.
- the other end of the external wiring 20 is connected to the bypass diode 30 c of the second terminal box 25.
- External wiring 20 is provided for connecting the second terminal box 25 and the third terminal box 26.
- the external wiring 20 is provided on the back surface 3 a (see FIG. 2) side of the back surface member 3.
- One end of the external wiring 20 is connected to the bypass diode 30 d of the second terminal box 25.
- the other end of the external wiring 20 is connected to the bypass diode 30 e of the third terminal box 26.
- the bypass diode 30 a is electrically connected between the second wiring member 71 and the second wiring member 72. Therefore, the bypass diode 30a is electrically connected in parallel with the solar cell subgroup formed by the first solar cell strings 8 and 9 connected in series via the second wiring member 81.
- the bypass diode 30 b is electrically connected between the second wiring member 72 and the second wiring member 73. Therefore, the bypass diode 30b is electrically in parallel with the solar cell subgroup formed by the first solar cell string 10 and the second solar cell string 14 connected in series via the second wiring member 80. It is connected to the.
- the bypass diode 30 c is electrically connected between the second wiring member 73 and the second wiring member 74. Therefore, the bypass diode 30 c is electrically connected in parallel with the solar cell subgroup formed by the second solar cell strings 15 and 16 connected in series via the second wiring member 79.
- the bypass diode 30d is electrically connected between the second wiring member 74 and the second wiring member 75. Therefore, the bypass diode 30d is electrically in parallel with the solar cell subgroup formed by the second solar cell string 17 and the third solar cell string 42 connected in series via the second wiring member 78. It is connected to the.
- the bypass diode 30 e is electrically connected between the second wiring member 75 and the second wiring member 76. Therefore, the bypass diode 30 e is electrically connected in parallel with the solar cell subgroup formed by the third solar cell strings 43 and 44 connected in series via the second wiring member 77.
- each bypass diode is connected so that a reverse bias voltage is not applied to the solar cell string connected in parallel with each bypass diode from other solar cell strings.
- the solar cell group 101 is divided into the first solar cell group 101, the second solar cell group 102, and the third solar cell group 103 in the x direction, the sun connected in parallel with each bypass diode.
- the number of solar cells in the battery string can be reduced. For this reason, the number of solar cells that cannot contribute to the output of the solar cell module can be reduced even if a part of the solar cells of the solar cell group enters into the shade, so that power generation is not possible. A decrease in the output of the battery module can be suppressed.
- the external wiring 20 electrically connects between the first terminal box 24 and the second terminal box 25 and between the second terminal box 25 and the third terminal box 26. Therefore, it is not necessary to make a space for providing a new wiring material in a region sandwiched between the front surface member 2 and the back surface member 3. Therefore, an increase in the area of the solar cell module can be suppressed.
- the x direction is the direction in which the solar cells are arranged in the solar cell string
- the y direction is the direction in which the solar cell strings are arranged in the solar cell module.
- the solar cell module in which the surface 1a side of the solar cell 1 is the light receiving surface side is described as an example, but the present invention is not limited to this.
- a double-sided light receiving solar cell module that receives light from both the front surface 1a side and the back surface 1b side of the solar cell 1 may be used.
- each terminal box may be provided at a position that does not overlap with the solar cell 1.
- the solar cell module may be provided at a position further outside the solar cell at the peripheral edge.
- third Wiring materials 42 to 44 ... third solar cell strings 51 to 64 ... second wiring materials 71 to 81 ... second wiring material 101 ... first solar cell group 102 ... second solar cell group 03 ... third of the solar cell group 200 ... wiring material 201 ... solar cell module
Abstract
Description
図1は、第1の実施形態の太陽電池モジュールを示す模式的平面図である。本実施形態の太陽電池モジュール7は、第1の太陽電池グループ101と第2の太陽電池グループ102とを有している。第1の太陽電池グループ101は、5つの第1の太陽電池ストリング8、9、10、11及び12を有している。第2の太陽電池グループ102は、5つの第2の太陽電池ストリング15、16、17、18及び19を有している。したがって、第1の太陽電池グループ101及び第2の太陽電池グループ102は、それぞれ奇数個の第1の太陽電池ストリング及び第2の太陽電池ストリングを有している。第1の太陽電池ストリング8、9は1つの太陽電池サブグループを形成する。第1の太陽電池ストリング10と11、第1の太陽電池ストリング12と第2の太陽電池ストリング15、第2の太陽電池ストリング16と17、第2の太陽電池ストリング18と19、も同様に、それぞれ、太陽電池サブグループを形成する。
図3は、第2の実施形態の太陽電池モジュールを示す模式的平面図である。本実施形態の太陽電池モジュール7は、第1の太陽電池グループ101と第2の太陽電池グループ102とを有している。本実施形態の第1の太陽電池グループ101は、6つの第1の太陽電池ストリング8、9、10、11、12及び13を有している。第2の太陽電池グループ102は、6つの第2の太陽電池ストリング14、15、16、17、18及び19を有している。
図5は、比較例の太陽電池モジュールを示す模式的平面図である。この比較例は、第2の実施形態と同様に、6つの第1の太陽電池ストリング8、9、10、11、12及び13を有する第1の太陽電池グループ101と、6つの第2の太陽電池ストリング14、15、16、17、18及び19を有する第2の太陽電池グループ102とを有している。
図4は、第3の実施形態の太陽電池モジュールを示す模式的平面図である。本実施形態では、第1の太陽電池グループ101、第2の太陽電池グループ102及び第3の太陽電池グループ103を、x方向に配列している。第1の太陽電池グループ101は、3つの第1の太陽電池ストリング8、9及び10を有している。第2の太陽電池グループ102は、4つの第2の太陽電池ストリング14、15、16及び17を有している。第3の太陽電池グループ103は、3つの第3の太陽電池ストリング42、43び44を有している。
1a…表面
1b…裏面
2…表面部材
3…裏面部材
3a…裏面
4…第1の配線材
5,5a,5b…充填材層
6…フィンガー電極
7…太陽電池モジュール
8~13…第1の太陽電池ストリング
14~19…第2の太陽電池ストリング
20…外部配線
21…第1の端子ボックス
22…第2の端子ボックス
23a,23b,23c…第1の端子ボックス
23d,23e,23f…第2の端子ボックス
24…第1の端子ボックス
25…第2の端子ボックス
26…第3の端子ボックス
30a~30f…バイパスダイオード
31~33,35~41…第2の配線材
34…第3の配線材
42~44…第3の太陽電池ストリング
51~64…第2の配線材
71~81…第2の配線材
101…第1の太陽電池グループ
102…第2の太陽電池グループ
103…第3の太陽電池グループ
200…配線材
201…太陽電池モジュール
Claims (8)
- 複数の太陽電池が配線材によって接続された第1の太陽電池グループと、
複数の太陽電池が配線材によって接続された第2の太陽電池グループと、
前記第1の太陽電池グループ及び前記第2の太陽電池グループの表面側に配置された表面部材と、
前記第1の太陽電池グループ及び前記第2の太陽電池グループの裏面側に配置された裏面部材と、
前記裏面部材の裏面側に設けられる少なくとも1つの第1の端子ボックスと、
前記裏面部材の裏面側に設けられる少なくとも1つの第2の端子ボックスと、
前記裏面部材の裏面側に設けられ、前記第1の端子ボックスの少なくとも1つと前記第2の端子ボックスの少なくとも1つとを電気的に接続する外部配線とを備える、太陽電池モジュール。 - 前記第1の端子ボックス及び前記第2の端子ボックスのうちの少なくともいずれか一方に、少なくとも1つのバイパスダイオードが含まれている、請求項1に記載の太陽電池モジュール。
- 前記第1の端子ボックス及び前記第2の端子ボックスのうちの少なくともいずれか一方に、複数のバイパスダイオードが含まれている、請求項1または2に記載の太陽電池モジュール。
- 前記配線材が、第1の配線材及び第2の配線材を含み、
前記第1の太陽電池グループが、前記第1の配線材により接続された複数の太陽電池からなる複数の第1の太陽電池ストリングを有し、前記複数の第1の太陽電池ストリング間は前記第2の配線材により接続されており、
前記第2の太陽電池グループが、前記第1の配線材により接続された複数の太陽電池からなる複数の第2の太陽電池ストリングを有し、前記複数の第2の太陽電池ストリング間は前記第2の配線材により接続されている、請求項2または3に記載の太陽電池モジュール。 - 前記第1の太陽電池グループ及び前記第2の太陽電池グループが、それぞれ奇数個の前記第1の太陽電池ストリング及び前記第2の太陽電池ストリングを有し、一方端に位置する前記第1の太陽電池ストリングと前記第2の太陽電池ストリングとが、第3の配線材により接続されている、請求項4に記載の太陽電池モジュール。
- 前記第1の端子ボックスに含まれる少なくとも1つの前記バイパスダイオードと、前記外部配線とが直列に接続され、
直列に接続された前記バイパスダイオードおよび前記外部配線は、直列に接続された前記第1の太陽電池ストリングおよび前記第2の太陽電池ストリングと並列に接続される、請求項5に記載の太陽電池モジュール。 - 前記第1の端子ボックスが、前記第1の太陽電池グループと重畳する位置に設けられ、前記第2の端子ボックスが、前記第2の太陽電池グループと重畳する位置に設けられている、請求項1~6のいずれか一項に記載の太陽電池モジュール。
- 前記第1の端子ボックス及び前記第2の端子ボックスが、太陽電池モジュールの周縁部に位置する前記太陽電池と重畳するように設けられている、請求項1~7のいずれか一項に記載の太陽電池モジュール。
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CN201480070595.6A CN105850034A (zh) | 2013-12-27 | 2014-09-16 | 太阳电池模块 |
JP2015554604A JP6422034B2 (ja) | 2013-12-27 | 2014-09-16 | 太陽電池モジュール |
EP14873748.9A EP3089356B1 (en) | 2013-12-27 | 2014-09-16 | Solar cell module |
US15/191,529 US20160308082A1 (en) | 2013-12-27 | 2016-06-24 | Solar cell module |
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CN112753107A (zh) * | 2018-09-28 | 2021-05-04 | 松下电器产业株式会社 | 太阳能电池模块的制造方法及太阳能电池模块 |
US11581455B2 (en) | 2018-09-28 | 2023-02-14 | Panasonic Holdings Corporation | Solar cell module manufacturing method and solar cell module |
CN112753107B (zh) * | 2018-09-28 | 2023-06-30 | 松下控股株式会社 | 太阳能电池模块的制造方法及太阳能电池模块 |
JP7434600B2 (ja) | 2020-04-07 | 2024-02-20 | 蘇州阿特斯陽光電力科技有限公司 | 太陽電池モジュール |
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CN105850034A (zh) | 2016-08-10 |
JPWO2015098203A1 (ja) | 2017-03-23 |
EP3089356A4 (en) | 2016-12-28 |
US20160308082A1 (en) | 2016-10-20 |
EP3089356A1 (en) | 2016-11-02 |
JP6422034B2 (ja) | 2018-11-14 |
EP3089356B1 (en) | 2021-01-06 |
JP2018207134A (ja) | 2018-12-27 |
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