Photovoltaic module

Abstract

To inhibit the impairment of the design property due to a photovoltaic power generation cell provided in a photovoltaic module.SOLUTION: A photovoltaic module 1a according to an embodiment of the present invention includes a first translucent member 11, a second translucent member 12 arranged facing the first translucent member 11, intermediate adhesive films 13, 14 and a colored film 15 that are arranged between the first translucent member 11 and the second translucent member 12, and a photovoltaic power generation cell 21 arranged between the first translucent member 11 and the second translucent member 12. In a plan view of the photovoltaic module 1a, the photovoltaic module 1a has an installation part A1 where the photovoltaic power generation cell 21 is provided, and a non-installation part A2 where no photovoltaic power generation cell 21 is provided. Hue-angle difference between the installation part A1 and the non-installation part A2 is 20 degrees or less.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a solar cell module.

Background Art

[0002] In recent years, in order to utilize natural energy, the use of solar cell modules provided with photovoltaic cells has been promoted. In particular, solar cell modules in which photovoltaic cells are provided inside laminated glass are widely used.

[0003] Patent Document 1 discloses a technique related to a solar cell capable of enhancing the design property by imparting coloring to the solar cell and achieving harmony with the surroundings.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] As described in the background art, in recent years, solar cell modules in which photovoltaic cells are provided inside laminated glass have been widely used. Such solar cell modules are used as building materials such as window glass of buildings.

[0006] However, when a photovoltaic cell is provided inside window glass, there is a problem that the design property of the building is impaired because the photovoltaic cell comes into the human field of view.

[0007] In view of the above problems, an object of the present invention is to provide a solar cell module capable of suppressing the impairment of the design property caused by the photovoltaic cell provided in the solar cell module.

Means for Solving the Problems

[0008] A solar cell module according to one aspect of the present invention is as follows.

[0009] [1] A first light-transmitting member, A second light-transmitting member arranged to face the first light-transmitting member, An intermediate adhesive film disposed between the first light-transmitting member and the second light-transmitting member, A solar cell module comprising a solar cell disposed between the first light-transmitting member and the second light-transmitting member, wherein When the solar cell module is viewed in plan, the solar cell module has an installation portion where the solar cell is installed and a non-installation portion where the solar cell is not installed, The hue angle difference between the installation portion and the non-installation portion is 20 degrees or less. Solar cell module.

[0010] [2] The solar cell module according to [1], wherein the chroma difference between the installation portion and the non-installation portion is 30 or less.

[0011] [3] The solar cell module according to [1] or [2], wherein the visible light transmittance in the non-installation portion is 10% or more and 80% or less.

[0012] [4] The solar cell module according to [1] or [2], wherein the haze in the non-installation portion is 20% or less.

[0013] [5] The solar cell module according to any one of [1] to [4], wherein a colored film is disposed between the first light-transmitting member and the second light-transmitting member.

[0014] [6] The first light-transmitting member side of the solar cell is the light-receiving surface of the solar cell, The solar cell module according to [5], wherein the colored film is disposed on the second light-transmitting member side with reference to the solar power generation cell.

[0015] [7] The solar cell module according to [5] or [6], wherein the colored film is disposed so as to be sandwiched by the intermediate adhesive film in the thickness direction.

[0016] [8] The solar power generation cell is a thin film solar power generation cell, A transparent conductive film and the thin film solar power generation cell are provided on the main surface of the first light-transmitting member on the side where the solar power generation cell is disposed. The solar cell module according to [5] or [6].

[0017] [9] The solar cell module according to [5], wherein the colored film is disposed between the adjacent solar power generation cells when the solar cell module is viewed in plan view.

[0018]

[10] The solar cell module according to any one of [1] to [4], wherein a colored intermediate adhesive film is provided on a part of the intermediate adhesive film.

[0019]

[11] The first light-transmitting member side of the solar power generation cell is a light-receiving surface of the solar power generation cell, The colored intermediate adhesive film is disposed on the second light-transmitting member side of the solar power generation cell. The solar cell module according to

[10] .

[0020]

[12] The intermediate adhesive film is a colored intermediate adhesive film, The solar power generation cell is a thin film solar power generation cell, A transparent conductive film and the thin film solar power generation cell are provided on the main surface of the first light-transmitting member on the side where the solar power generation cell is disposed. The colored intermediate adhesive film is disposed on the second light-transmitting member side of the thin-film solar cell. The solar cell module according to any one of [1] to [4].

[0021]

[13] The solar cell module according to any one of [1] to

[12] , wherein the first light-transmitting member and the second light-transmitting member are made of glass plates.

Advantages of the Invention

[0022] According to the present invention, it is possible to provide a solar cell module capable of suppressing impairment of the design property by the solar cell provided in the solar cell module.

Brief Description of the Drawings

[0023]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0024] <The gist of the present invention> A solar cell module according to one aspect of the present invention includes a first light-transmitting member, a second light-transmitting member arranged to face the first light-transmitting member, an intermediate adhesive film arranged between the first light-transmitting member and the second light-transmitting member, and a photovoltaic cell arranged between the first light-transmitting member and the second light-transmitting member. When the solar cell module is viewed in plan, the solar cell module has an installation portion where the photovoltaic cell is installed and a non-installation portion where the photovoltaic cell is not installed. And the solar cell module according to the present invention is configured such that the hue angle difference between the installation portion and the non-installation portion is 20 degrees or less.

[0025] Thus, the solar cell module according to the present invention is configured such that the hue angle difference between the installation portion and the non-installation portion is small. Therefore, when looking at the solar cell module, the installation portion of the photovoltaic cell can be made less conspicuous in appearance. Accordingly, it is possible to suppress the design property from being impaired by the photovoltaic cell provided in the solar cell module.

[0026] Hereinafter, embodiments of the present invention will be described. Hereinafter, as specific configuration examples of the present invention, configuration examples A to E will be described.

[0027] <Configuration Example A> FIG. 1 is a front view showing Configuration Example A of a solar cell module according to an embodiment. FIG. 2 is a cross-sectional view showing Configuration Example A of the solar cell module according to the embodiment, and is a cross-sectional view taken along the cutting line II-II in FIG. 1.

[0028] As shown in FIGS. 1 and 2, the solar cell module 1a according to this embodiment includes a first light-transmitting member 11, a second light-transmitting member 12, intermediate adhesive films 13 and 14, a colored film 15, and a photovoltaic cell 21. As shown in FIG. 2, the first light-transmitting member 11 and the second light-transmitting member 12 are plate-shaped members having light-transmitting properties, and can typically be configured using a glass plate or a resin material. Hereinafter, in this embodiment, the case where the first light-transmitting member 11 and the second light-transmitting member 12 are configured by glass plates will be described. Also, hereinafter, the first light-transmitting member 11 and the second light-transmitting member 12 will also be referred to as the first glass plate 11 and the second glass plate 12. The solar cell module 1a (laminated glass) according to this embodiment can be suitably used as a building material such as a window glass of a building.

[0029] The thicknesses of the first glass plate 11 and the second glass plate 12 are each, for example, 2 mm or more and 12 mm or less. For example, chemically strengthened glass may be used as the first glass plate 11 and the second glass plate 12. When chemically strengthened glass is used, the first glass plate 11 and the second glass plate 12 can be lightened while maintaining the strength of the first glass plate 11 and the second glass plate 12. Also, in this embodiment, air-cooled strengthened glass may be used as the first glass plate 11 and the second glass plate 12. For example, the first glass plate 11 is disposed on the outdoor side of the building, and the second glass plate 12 is disposed inside the building. In this case, the first glass plate 11 is disposed on the light-receiving surface side of the photovoltaic cell 21, and the second glass plate 12 is disposed on the non-light-receiving surface side of the photovoltaic cell 21.

[0030] As shown in FIG. 2, the intermediate adhesive films 13 and 14 are disposed between the first glass plate 11 and the second glass plate 12, and bond the first glass plate 11 and the second glass plate 12. Also, in this embodiment, a colored film 15 is provided between the intermediate adhesive film 13 and the intermediate adhesive film 14. The colored film 15 is disposed on the non-light-receiving surface side (the second glass plate 12 side) of the photovoltaic cell 21.

[0031] That is, in the present embodiment, the colored film 15 is arranged to be sandwiched between the intermediate adhesive films 13 and 14 in the thickness direction. Also, the side of the first glass plate 11 of the photovoltaic cell 21 is the light-receiving surface of the photovoltaic cell 21, and the colored film 15 is arranged on the side of the second glass plate 12 with respect to the photovoltaic cell 21 as a reference. Thus, in the present embodiment, the colored film 15 is arranged on the side of the second glass plate 12 with respect to the photovoltaic cell 21 as a reference. That is, since the colored film 15 is not provided on the light-receiving surface side of the photovoltaic cell 21, it is possible to suppress a decrease in the amount of light received by the photovoltaic cell 21 and to suppress a decrease in the power generation amount of the photovoltaic cell 21.

[0032] The total thickness of the intermediate adhesive films 13 and 14 and the colored film 15 is preferably 1.0 mm or more and 2.5 mm or less. As the intermediate adhesive films 13 and 14, resin materials such as EVA (ethylene-vinyl acetate copolymer) resin, PVB (polyvinyl butyral) resin, ionomer resin, COP (cycloolefin polymer), polyurethane, PVC (polyvinyl chloride), POE (polyolefin elastomer), and TPO (olefin-based thermoplastic elastomer) can be used.

[0033] The colored film 15 can be produced by including a coloring material in a resin material as a base material and molding it into a film shape. Examples of the coloring material used at this time include organic dyes such as cyanine-based, merocyanine-based, phthalocyanine-based, naphthalocyanine-based, azo-based, quinone-based, quinacridone-based, squarylium-based, triphenylmethane-based, xanthene-based, porphyrin-based, perylene-based, and indigo-based, inorganic dyes using chromium, iron, cobalt, manganese, etc., and carbon black. Also, as the resin material serving as the base material of the colored film 15, polyethylene terephthalate, polypropylene, polyethylene, polyvinyl chloride, and polyolefin can be used. The thickness of the colored film 15 is preferably 0.05 mm or more and 0.2 mm or less.

[0034] For example, when forming the solar cell module 1a, the first glass plate 11, the intermediate adhesive film 13, the photovoltaic cell 21, the intermediate adhesive film 13 (that is, sandwiching the photovoltaic cell 21 with the intermediate adhesive film 13), the colored film 15, the intermediate adhesive film 14, and the second glass plate 12 are laminated in this order, and the laminate is heated and pressed to be bonded, thereby forming the solar cell module 1a. At this time, the intermediate adhesive film 13 bonds the first glass plate 11 and the colored film 15, and the intermediate adhesive film 14 bonds the second glass plate 12 and the colored film 15. Therefore, the first glass plate 11 and the second glass plate 12 are bonded using the intermediate adhesive films 13 and 14.

[0035] The photovoltaic cell 21 is provided between the first glass plate 11 and the second glass plate 12. As shown in FIG. 1, when the photovoltaic cell 21 is viewed in plan of the solar cell module 1a, it is arranged in an array in the horizontal and vertical directions. In FIG. 1, as an example, a configuration in which a plurality of photovoltaic cells 21 are arranged in an array of 4 in the horizontal direction and 6 in the vertical direction (that is, in a 4×6 array) is shown. Note that the configuration shown in FIG. 1 is an example, and the number of photovoltaic cells 21 provided in the horizontal and vertical directions can be arbitrarily determined. The photovoltaic cells 21 inside the solar cell module 1a are connected by a conductive interconnector (not shown).

[0036] The photovoltaic cell 21 can be configured using a photovoltaic cell such as a silicon-based single crystal type, a silicon-based polycrystal type, an amorphous silicon type, a thin film silicon type, a CIGS type, an organic thin film type, a dye-sensitized type, a perovskite type, etc. As shown in FIG. 1, the shape of each photovoltaic cell 21 is rectangular. For example, the shape of each photovoltaic cell 21 may be square, rectangular, or circular. For example, a single-sided light-receiving type photovoltaic cell may be used as the photovoltaic cell 21. Also, a double-sided light-receiving type photovoltaic cell may be used as the photovoltaic cell 21. Further, a thin film photovoltaic cell may be used as the photovoltaic cell 21. In this case, a thin film of the photovoltaic cell may be formed on the surface of the first glass plate 11 on the side of the intermediate adhesive film 13 (see FIGS. 4 and 5).

[0037] In addition, as shown in FIG. 1, the solar cell module 1a according to the present embodiment has an installation portion A1 where the solar power generation cells 21 are installed and a non-installation portion A2 where the solar power generation cells 21 are not installed when the solar cell module 1a is viewed in plan. And the solar cell module 1a according to the present embodiment is configured such that the hue angle difference between the installation portion A1 and the non-installation portion A2 is 20 degrees or less. Note that the hue angle difference between the installation portion A1 and the non-installation portion A2 is more preferably 18 degrees or less, and still more preferably 15 degrees or less.

[0038] Here, the hue angle is the angle between the direction indicating a certain color and the direction indicating the reference color in the L * a * b * color system. Specifically, the hue angle is the angle obtained by moving counterclockwise with the axis in the red direction as 0° in the L * a * b * color system chromaticity diagram, and h = tan -1 (b * / a * ). Here, h is the hue angle, a * , b * are the color coordinates in the L * a * b * color system. In the present embodiment, it is configured such that the hue angle difference, which is the difference between the hue angle of the installation portion A1 and the hue angle of the non-installation portion A2 in the hue circle, is 20 degrees or less.

[0039] Note that in this specification, the hue angle of the installation portion A1 is the average value of the hue angles obtained by measuring any 50 points of the installation portion A1, and the hue angle of the non-installation portion A2 is the average value of the hue angles obtained by measuring any 50 points of the non-installation portion A2. The hue angle difference between the installation portion A1 and the non-installation portion A2 can be calculated by obtaining the difference between the average value of the hue angles of the installation portion A1 and the average value of the hue angles of the non-installation portion A2 obtained in this way.

[0040] As described above, the solar cell module 1a according to this embodiment is configured such that the hue angle difference between the installation part A1 and the non-installation part A2 is small. Therefore, when looking at the solar cell module 1a, the installation part A1 of the solar power generation cell 21 can be made less conspicuous in appearance. Accordingly, it is possible to suppress the design property from being impaired by the solar power generation cell 21 provided in the solar cell module 1a.

[0041] In this embodiment, the hue angle difference between the installation part A1 and the non-installation part A2 is typically the hue angle difference when the solar cell module 1a is viewed from the first glass plate 11 side (outdoor side). That is, by configuring the hue angle difference between the installation part A1 and the non-installation part A2 to be 20 degrees or less when viewed from the first glass plate 11 side (outdoor side), the installation part A1 of the solar power generation cell 21 can be made less conspicuous when the solar cell module 1a is viewed from the first glass plate 11 side (outdoor side).

[0042] For example, the hue angle of the installation part A1 is determined by the color of the first glass plate 11, the color of the intermediate adhesive film 13, and the color of the solar power generation cell 21. In particular, when the first glass plate 11 and the intermediate adhesive film 13 are colorless, the hue angle of the installation part A1 is determined by the color of the solar power generation cell 21. Further, the hue angle of the non-installation part A2 is determined by the color of the first glass plate 11, the colors of the intermediate adhesive films 13 and 14, the color of the colored film 15, and the color of the second glass plate 12. In particular, when the first glass plate 11, the intermediate adhesive films 13 and 14, and the second glass plate 12 are colorless, the hue angle of the non-installation part A2 is determined by the color of the colored film 15.

[0043] In this embodiment, by adjusting these color elements, the difference in hue angle between the installation part A1 and the non-installation part A2 can be adjusted. In particular, in this embodiment, the hue angle of the installation part A1 may be adjusted using the color of the solar power generation cell 21, and the hue angle of the non-installation part A2 may be adjusted using the color of the colored film 15 so that the hue angle difference between the installation part A1 and the non-installation part A2 is 20 degrees or less.

[0044] For example, the hue angle of the installation part A1 can be adjusted by changing the type of the solar power generation cell 21 to be used. Further, the hue angle of the non-installation part A2 can be adjusted by changing the color of the coloring film 15 to be used. Note that the color of the coloring film 15 can be adjusted by changing the type and amount of the coloring material contained in the coloring film 15.

[0045] Further, in the present embodiment, the chroma difference between the installation part A1 and the non-installation part A2 may be 30 or less, preferably 25 or less, and more preferably 15 or less. By setting the chroma difference between the installation part A1 and the non-installation part A2 within this range, the installation part A1 of the solar power generation cell 21 can be made less conspicuous more effectively. The chroma difference can be measured using a spectrophotometer CM-700d manufactured by Konica Minolta. Note that in this specification, the chroma difference between the installation part A1 and the non-installation part A2 can be calculated by obtaining the difference between the average value of the chroma measured at any 50 points of the installation part A1 and the average value of the chroma measured at any 50 points of the non-installation part A2.

[0046] Further, in the present embodiment, the visible light transmittance in the non-installation part A2 may be 10% or more and 80% or less, preferably 15% or more and 70% or less, and more preferably 30% or more and 70% or less. When the visible light transmittance in the non-installation part A2 is within such a range, visible light transmits well in the non-installation part A2. Therefore, when the solar cell module 1a is viewed from the second glass plate 12 side (indoors side), the outdoor view can be improved. In particular, in the present embodiment, by setting the hue angle difference between the installation part A1 and the non-installation part A2 to 20 degrees or less and setting the visible light transmittance in the non-installation part A2 to 10% or more and 80% or less, the installation part A1 of the solar power generation cell 21 can be made less conspicuous when the solar cell module 1a is viewed from the outdoor side, and the outdoor view can be improved when the solar cell module 1a is viewed from the indoor side. The visible light transmittance can be measured using a U-4100 manufactured by Hitachi High-Tech to measure the transmittance from 780 nm to 380 nm and calculated according to JIS R 3106. Note that in this specification, the visible light transmittance in the non-installation part A2 is the average value of the visible light transmittance measured at any 50 points of the non-installation part A2.

[0047] Also, in this embodiment, the haze in the non-installed portion A2 may be 20% or less, preferably 10% or less, and more preferably 7% or less. When the haze in the non-installed portion A2 is within such a range, light transmits well in the non-installed portion A2. Therefore, when the solar cell module 1a is viewed from the second glass plate 12 side (indoors), the outdoor view can be improved. In particular, in this embodiment, by setting the hue angle difference between the installed portion A1 and the non-installed portion A2 to 20 degrees or less and setting the haze in the non-installed portion A2 to 20% or less, when the solar cell module 1a is viewed from the outdoor side, the installed portion A1 of the solar power generation cell 21 can be made inconspicuous, and when the solar cell module 1a is viewed from the indoor side, the outdoor view can be improved. The haze can be measured using a haze guard i manufactured by BYK (conforming to ISO 14782:1999). In this specification, the haze in the non-installed portion A2 is the average value of the haze obtained by measuring any 50 points of the non-installed portion A2.

[0048] Also, in this embodiment, the reflectance when the non-installed portion A2 is viewed from the second glass plate 12 side may be 10% or less, preferably 5% or less, and more preferably 3% or less. With such a configuration, when the second glass plate 12 is viewed from the indoor side, the reflection of light can be suppressed. Therefore, when the solar cell module 1a is viewed from the indoor side, the outdoor view can be improved. The reflectance when the non-installed portion A2 is viewed from the second glass plate 12 side can be adjusted by forming an antireflection film on the second glass plate 12. The reflectance can be measured by measuring the transmittance from 780 nm to 380 nm with a U-4100 manufactured by Hitachi High-Tech Corporation and calculated according to JIS R 3106. In this specification, the reflectance in the non-installed portion A2 is the average value of the reflectance obtained by measuring any 50 points of the non-installed portion A2.

[0049] <Configuration Example B> Next, a configuration example B of the solar cell module according to the present embodiment will be described. FIG. 3 is a cross-sectional view showing the configuration example B of the solar cell module according to the embodiment. As shown in FIG. 3, the solar cell module 1b according to the configuration example B includes a first glass plate 11, a second glass plate 12, an intermediate adhesive film 16, a colored intermediate adhesive film 17, and a photovoltaic cell 21. That is, in the solar cell module 1b according to the configuration example B, the colored intermediate adhesive film 17 is provided in a part of the intermediate adhesive film. Since the other configurations are the same as those of the solar cell module 1a according to the configuration example A shown in FIGS. 1 and 2, the same reference numerals are given to the same components, and duplicate explanations are omitted.

[0050] As shown in FIG. 3, the intermediate adhesive film 16 is provided on the light-receiving surface side of the photovoltaic cell 21, that is, on the side of the first glass plate 11. The colored intermediate adhesive film 17 is provided on the non-light-receiving surface side of the photovoltaic cell 21, that is, on the side of the second glass plate 12. The same material as the above-described intermediate adhesive films 13 and 14 can be used for the intermediate adhesive film 16. The colored intermediate adhesive film 17 can be formed, for example, by adding the above-described coloring material to the resin material that is the base material of the above-described intermediate adhesive film. Note that the color of the colored intermediate adhesive film 17 can be adjusted by changing the type and amount of the coloring material added to the colored intermediate adhesive film 17. The total thickness of the intermediate adhesive film 16 and the colored intermediate adhesive film 17 is preferably 0.6 mm or more and 1.8 mm or less.

[0051] For example, when forming the solar cell module 1b, the first glass plate 11, the intermediate adhesive film 16, the photovoltaic cell 21, the colored intermediate adhesive film 17, and the second glass plate 12 are laminated in this order, and the laminate is heated and pressed to be bonded, thereby forming the solar cell module 1b. Here, the colored intermediate adhesive film 17 is used for two purposes: coloring and adhesion.

[0052] Also in the solar cell module 1b according to Configuration Example B, the hue angle difference between the installation part A1 where the solar power generation cell 21 is installed and the non-installation part A2 where the solar power generation cell 21 is not installed is set to 20 degrees or less. In this way, since it is configured so that the hue angle difference between the installation part A1 and the non-installation part A2 becomes small, when looking at the solar cell module 1b, the installation part A1 of the solar power generation cell 21 can be made less conspicuous in appearance. Therefore, it is possible to suppress the design property from being impaired by the solar power generation cell 21 provided in the solar cell module 1b.

[0053] <Configuration Example C> Next, Configuration Example C of the solar cell module according to the present embodiment will be described. FIG. 4 is a cross-sectional view showing Configuration Example C of the solar cell module according to the embodiment. As shown in FIG. 4, the solar cell module 1c according to Configuration Example C includes a first glass plate 11, a second glass plate 12, intermediate adhesive films 13 and 14, a colored film 15, a transparent conductive film 22, and a thin-film solar power generation cell 21. That is, the solar cell module 1c according to Configuration Example C is different from the solar cell module 1a according to Configuration Example A shown in FIGS. 1 and 2 in that the solar power generation cell is constituted by the thin-film solar power generation cell 21. For other configurations, since they are the same as those of the solar cell module 1a according to Configuration Example A shown in FIGS. 1 and 2, the same reference numerals are given to the same components, and redundant descriptions are omitted.

[0054] As shown in FIG. 4, in Configuration Example C, the transparent conductive film 22 and the thin-film solar power generation cell 21 are provided on the inner main surface of the first glass plate 11. For example, the transparent conductive film 22 is made of a transparent conductive oxide (Transparent Conductive Oxide: TCO). As the transparent conductive film 22, for example, materials such as indium oxide (In2O3)-based, zinc oxide (ZnO)-based, and tin oxide (SnO2)-based materials can be used. Also, as the thin-film solar power generation cell 21, thin-film solar power generation cells such as thin-film silicon type, organic thin-film type, and perovskite type can be used.

[0055] Note that the intermediate adhesive films 13 and 14 and the colored film 15 used in Configuration Example C are the same as those used in Configuration Example A. When forming the solar cell module 1c, the first glass plate 11 on which the transparent conductive film 22 and the thin-film solar cell 21 are formed, the intermediate adhesive film 13, the colored film 15, the intermediate adhesive film 14, and the second glass plate 12 are laminated in this order, and this laminate is heated and pressed to be crimped, thereby forming the solar cell module 1c. At this time, the intermediate adhesive film 13 adheres the first glass plate 11 and the colored film 15, and the intermediate adhesive film 14 adheres the second glass plate 12 and the colored film 15. Therefore, the first glass plate 11 and the second glass plate 12 are adhered using the intermediate adhesive films 13 and 14.

[0056] In Configuration Example C, the transparent conductive film 22 and the thin-film solar cell 21 are provided on the main surface inside the first glass plate 11. Therefore, since the colored film 15 is not provided on the light-receiving surface side of the thin-film solar cell 21, it is possible to suppress a decrease in the amount of light received by the thin-film solar cell 21 and to suppress a decrease in the power generation amount of the thin-film solar cell 21.

[0057] Also, in the solar cell module 1c according to the present embodiment, the hue angle difference between the installation portion A1 where the thin-film solar cell 21 is installed and the non-installation portion A2 where the thin-film solar cell 21 is not installed is set to 20 degrees or less. In this way, since the hue angle difference between the installation portion A1 and the non-installation portion A2 is configured to be small, when looking at the solar cell module 1c, the installation portion A1 of the thin-film solar cell 21 can be made less conspicuous in appearance. Therefore, it is possible to suppress the design property from being impaired by the thin-film solar cell 21 provided in the solar cell module 1c.

[0058] <Configuration Example D> Next, a configuration example D of the solar cell module according to the present embodiment will be described. FIG. 5 is a cross-sectional view showing the configuration example D of the solar cell module according to the embodiment. As shown in FIG. 5, the solar cell module 1d according to the configuration example D includes a first glass plate 11, a second glass plate 12, a colored intermediate adhesive film 18, a transparent conductive film 22, and a thin-film solar photovoltaic cell 21. The transparent conductive film 22 and the thin-film solar photovoltaic cell 21 are provided on the main surface inside the first glass plate 11. As the materials constituting the transparent conductive film 22 and the thin-film solar photovoltaic cell 21, the same materials as those of the solar cell module 1c according to the configuration example C shown in FIG. 4 can be used.

[0059] A colored intermediate adhesive film 18 is provided between the first glass plate 11 and the second glass plate 12. As the colored intermediate adhesive film 18, the same material as the colored intermediate adhesive film 17 included in the solar cell module 1b shown in FIG. 3 described in the configuration example B can be used. The thickness of the colored intermediate adhesive film 18 is preferably 0.3 mm or more and 1.4 mm or less. When forming the solar cell module 1d, the first glass plate 11 on which the transparent conductive film 22 and the thin-film solar photovoltaic cell 21 are formed, the colored intermediate adhesive film 18, and the second glass plate 12 are laminated in this order, and this laminate is heated and pressed to be pressure-bonded, whereby the solar cell module 1d is formed. At this time, the colored intermediate adhesive film 18 adheres the first glass plate 11 and the second glass plate 12. Further, the colored intermediate adhesive film 17 is also used for coloring purposes.

[0060] As shown in FIG. 5, the colored intermediate adhesive film 17 is disposed on the non-light-receiving surface side of the thin-film solar photovoltaic cell 21, that is, on the second glass plate 12 side. Therefore, since the colored intermediate adhesive film 17 is not provided on the light-receiving surface side of the thin-film solar photovoltaic cell 21, it is possible to suppress a decrease in the amount of light received by the thin-film solar photovoltaic cell 21, and it is possible to suppress a decrease in the power generation amount of the thin-film solar photovoltaic cell 21.

[0061] Also, in the solar cell module 1d according to the present embodiment, the hue angle difference between the installation portion A1 where the thin-film solar power generation cell 21 is installed and the non-installation portion A2 where the thin-film solar power generation cell 21 is not installed is set to 20 degrees or less. In this way, since the hue angle difference between the installation portion A1 and the non-installation portion A2 is configured to be small, when looking at the solar cell module 1d, the installation portion A1 of the thin-film solar power generation cell 21 can be made less conspicuous in appearance. Therefore, it is possible to suppress the design property from being impaired by the thin-film solar power generation cell 21 provided in the solar cell module 1d.

[0062] <Configuration Example E> Next, a configuration example E of the solar cell module according to the present embodiment will be described. FIG. 6 is a cross-sectional view showing the configuration example E of the solar cell module according to the embodiment. As shown in FIG. 6, the solar cell module 1e according to the configuration example E includes a first glass plate 11, a second glass plate 12, intermediate adhesive films 13 and 14, a colored film 15, and a solar power generation cell 21. The solar cell module 1e according to the configuration example E has a different position of the solar power generation cell 21 and the colored film 15 compared to the solar cell module 1a according to the configuration example A shown in FIGS. 1 and 2. For other configurations, since they are the same as those of the solar cell module 1a according to the configuration example A shown in FIGS. 1 and 2, the same reference numerals are given to the same components, and redundant descriptions are omitted.

[0063] As shown in FIG. 6, in the solar cell module 1e according to the configuration example E, when the solar cell module 1e is viewed in plan, the colored film 15 is disposed between adjacent solar power generation cells 21. That is, the colored film 15 is formed in the same layer as the solar power generation cell 21 and is disposed between adjacent solar power generation cells 21. In other words, the colored film 15 is formed in the same layer as the solar power generation cell 21 and is provided in the non-installation portion A2 of the solar power generation cell 21.

[0064] In Configuration Example E, when the solar cell module 1e is viewed in plan view, a colored film 15 is disposed between adjacent solar power generation cells 21. Therefore, when the solar cell module 1e is viewed in plan view, the solar power generation cell 21 and the colored film 15 do not overlap, so that it is possible to suppress a decrease in the amount of light received by the solar power generation cell 21 and to suppress a decrease in the power generation amount of the solar power generation cell 21.

[0065] Also, in the solar cell module 1e according to the present embodiment, the hue angle difference between the installation portion A1 where the solar power generation cell 21 is installed and the non-installation portion A2 where the solar power generation cell 21 is not installed is set to 20 degrees or less. Thus, since the hue angle difference between the installation portion A1 and the non-installation portion A2 is configured to be small, when the solar cell module 1e is viewed, the installation portion A1 of the solar power generation cell 21 can be made inconspicuous in appearance. Therefore, it is possible to suppress the design property from being impaired by the solar power generation cell 21 provided in the solar cell module 1e.

[0066] As described above, the present invention has been described in accordance with the above-described embodiments. However, the present invention is not limited only to the configurations of the above-described embodiments, and various modifications, corrections, and combinations that can be made by those skilled in the art within the scope of the invention of the claims of the present patent application are of course included.

Explanation of Reference Numerals

[0067] 1a~1e Solar cell module 11 First light-transmitting member (first glass plate) 12 Second light-transmitting member (second glass plate) 13, 14, 16 Intermediate adhesive film 15 Colored film 17, 18 Colored intermediate adhesive film 21 Solar power generation cell 22 Transparent conductive film

Claims

1. a first light-transmitting member, a second light-transmitting member arranged to face the first light-transmitting member, an intermediate adhesive film arranged between the first light-transmitting member and the second light-transmitting member, a solar cell arranged between the first light-transmitting member and the second light-transmitting member, wherein the solar cell module: when viewed in plan, the solar cell module has an installation portion where the solar cell is installed and a non-installation portion where the solar cell is not installed; a hue angle difference between the installation portion and the non-installation portion is 20 degrees or less; a solar cell module.

2. The solar cell module according to claim 1, wherein a chroma difference between the installation portion and the non-installation portion is 30 or less.

3. The solar cell module according to claim 1 or 2, wherein a visible light transmittance in the non-installation portion is 10% or more and 80% or less.

4. The solar cell module according to claim 1 or 2, wherein a haze in the non-installation portion is 20% or less.

5. The solar cell module according to claim 1 or 2, wherein a colored film is arranged between the first light-transmitting member and the second light-transmitting member.

6. a side of the solar cell on the first light-transmitting member side is a light-receiving surface of the solar cell; The solar cell module according to claim 5, wherein the colored film is arranged on the second light-transmitting member side with respect to the solar cell.

7. The solar cell module according to claim 6, wherein the colored film is arranged so as to be sandwiched by the intermediate adhesive film in the thickness direction.

8. the solar cell is a thin-film solar cell; a transparent conductive film and the thin-film solar cell are provided on a main surface of the first light-transmitting member on a side where the solar cell is arranged; The solar cell module according to claim 6.

9. The solar cell module according to claim 5, wherein the colored film is arranged between adjacent solar cells when the solar cell module is viewed in plan.

10. The solar cell module according to claim 1 or 2, wherein a colored intermediate adhesive film is provided in a part of the intermediate adhesive film.

11. a side of the solar cell on the first light-transmitting member side is a light-receiving surface of the solar cell; The colored intermediate adhesive film is arranged on the second light-transmitting member side of the solar cell; The solar cell module according to claim 10.

12. The intermediate adhesive film is a colored intermediate adhesive film, The solar cell is a thin-film solar cell, A transparent conductive film and the thin-film solar cell are provided on a main surface of the first light-transmitting member on the side where the solar cell is disposed, The colored intermediate adhesive film is disposed on the second light-transmitting member side of the thin-film solar cell, The solar cell module according to claim 1 or 2.

13. The solar cell module according to claim 1 or 2, wherein the first light-transmitting member and the second light-transmitting member are each composed of a glass plate.

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