JPWO2014175398A1 - Solar cell module - Google Patents

Abstract

The solar cell module 1 includes a translucent substrate 2 having a first surface 2a and a second surface 2b located on the back surface of the first surface 2a, and a first protection having translucency disposed on the second surface 2b. A second protection including a layer 3a, a plurality of solar cell elements 4 disposed on the first protective layer 3a, and a colored portion 3a1 disposed around at least the plurality of solar cell elements 4 and in contact with the second surface 2b. Layer 3b.

Description

  The present invention relates to a solar cell module.

  With the recent increase in environmental protection, solar power generation systems with a low environmental load are attracting attention. In order to expand the spread of solar power generation systems, it is required to increase the conversion efficiency of solar cell modules.

  In the solar cell module disclosed in Japanese Patent Application Laid-Open No. 10-284747, incident light to a place other than the solar cell element is reflected in the solar cell module, and the reflected light is guided to the solar cell element to improve the conversion efficiency. It is increasing.

  In the solar cell module disclosed in Japanese Patent Laid-Open No. 10-284747, since the back surface protection member is located on the back surface side of the solar cell element, a part of the reflected light reflected on the surface of the back surface protection member is a solar cell. It tends to enter the back surface of the device. However, the back surface of the solar cell element may have a collecting electrode provided on almost the entire surface. Therefore, the light incident on the back surface of the solar cell element is unlikely to contribute to photoelectric conversion.

  One of the objects of the present invention is to provide a solar cell module having a simple structure and improved conversion efficiency.

  A solar cell module according to an embodiment of the present invention includes a translucent substrate having a first surface and a second surface located on the back surface of the first surface, and a translucency disposed on the second surface. A first protective layer, and a plurality of solar cell elements disposed on the first protective layer. Furthermore, in this embodiment, the 2nd protective layer which has the colored part which contact | connects the said 2nd surface and is arrange | positioned around the said some solar cell element is provided.

  According to the solar cell module according to the embodiment of the present invention, the amount of light incident on the solar cell element can be increased, so that the conversion efficiency is increased.

It is a figure which shows 1 A of solar cell modules which concern on 1st Embodiment, Fig.1 (a) is the top view seen from the light-receiving surface side, FIG.1 (b) looks at Fig.1 (a) in an AA 'cross section. FIG. 1C is a cross-sectional view of FIG. 1A viewed along the BB ′ cross section. It is a perspective view which decomposes | disassembles and shows the laminated structure of 1 A of solar cell modules shown in FIG. It is a model figure which shows the path | route of the light which injects into the solar cell module 1A shown in FIG. It is a figure which shows the solar cell module used for the test, Fig.4 (a) is a test body corresponding to the solar cell module 1A of 1st Embodiment, and the test body corresponding to the conventional solar cell module 10 used as a comparison object. 4 (b) is a cross-sectional view of the solar cell module 1A of the first embodiment as seen in the CC ′ cross-section of FIG. 4 (a), and FIG. 4 (c) is a cross-sectional view of FIG. It is sectional drawing of the conventional solar cell module 10 seen in CC 'cross section of a). It is a figure which shows the solar cell module 1B which concerns on 2nd Embodiment, Fig.5 (a) shows the top view which looked at the solar cell module 1B from the light-receiving surface side, FIG.5 (b) shows Fig.5 (a). It is sectional drawing seen in DD 'cross section. It is a perspective view which decomposes | disassembles and shows the laminated structure of 1 C of solar cell modules which concern on 3rd Embodiment. It is a figure which shows 1 C of solar cell modules which concern on 3rd Embodiment, and is sectional drawing equivalent to FIG.1 (b). It is a figure which shows 1D of solar cell modules which concern on 4th Embodiment, and is sectional drawing equivalent to FIG.1 (b).

  Embodiments of the present invention will be described with reference to the accompanying drawings.

<< First Embodiment >>
As shown in FIG. 1, the solar cell module 1 </ b> A according to the first embodiment of the present invention has a surface 1 a (which also corresponds to one main surface of the translucent substrate 2) that mainly receives light and a back surface of the surface 1 a. It has a corresponding back surface 1b (also corresponding to one main surface of the back surface protection member 6). The solar cell module 1A includes, in order from the surface 1a side, a translucent substrate 2, a first protective layer 3a corresponding to the first covering member or a second protective layer 3b corresponding to the second covering member, and an inner lead. 5, a plurality of solar cell elements 4 connected to each other, a third protective layer 3 c corresponding to a third covering member, a back surface protecting member 6 that protects the back surface 1 b, and a terminal box 7.

  Next, members constituting the solar cell module will be described.

  The translucent substrate 2 functions as a substrate for the solar cell module 1A. As shown in FIG. 1, the translucent substrate 2 has a first surface 2a corresponding to the front surface 1a of the solar cell module 1A and a second surface 2b corresponding to the back surface of the first surface 2a. The second surface 2b has a recess 2c.

  As a material of the translucent substrate 2, for example, white plate tempered glass, soda lime glass, and acrylic resin can be used. For example, when the translucent board | substrate 2 is white board tempered glass, thickness should just be about 2.5 mm-4.5 mm from a viewpoint of obtaining the intensity | strength required for 1 A of solar cell modules. Moreover, the recessed part 2c of the translucent board | substrate 2 can be formed using the roll etc. which were embossed at the time of preparation of the translucent board | substrate 2, for example. The concave portion 2c is, for example, a round rhombus with a diameter of about 0.5 mm to 0.8 mm in a plan view, and a concave portion having a depth of about 0.05 mm to 0.5 mm is spaced at an interval of 1 mm to 1.2 mm. It is formed by aligning vertically and horizontally.

  Further, the recess 2 c has a function of improving the adhesion with the protective layer 3. Further, in the concave portion 2c, light can be reflected (for example, diffusely reflected) at an interface in contact with a substance having a refractive index different from that of the translucent substrate 2. On the other hand, in the recess 2c, light can be almost transmitted at the interface in contact with a substance having the same refractive index as that of the translucent substrate 2.

  The protective layer 3 is a member that is disposed on the second surface 2 b side of the translucent substrate 2 and seals and protects the solar cell element 4. The protective layer 3 includes a first protective layer 3a, a second protective layer 3b, and a third protective layer 3c.

  The first protective layer 3 a is disposed between the second surface 2 b of the translucent substrate 2 and the light receiving surface 4 a (first main surface) of the solar cell element 4. The first protective layer 3 a is formed of a material having a refractive index equivalent to that of the translucent substrate 2. For example, when the translucent substrate 2 is white plate tempered glass (refractive index: 1.50 to 1.54), the first protective layer 3a has a transparent EVA (ethylene-vinyl acetate copolymer) resin (refractive Ratio: 1.50 to 1.54) can be used.

  Thus, by matching the refractive indexes of the translucent substrate 2 and the first protective layer 3a, it is possible to reduce the reflection of light generated at the interface between the translucent substrate 2 and the first protective layer 3a. Thereby, the light incident on the first surface 2 a of the translucent substrate 2 is easily incident on the light receiving surface 4 a of the solar cell element 4. Moreover, the thickness of the 1st protective layer 3a should just be about 0.3 mm-0.8 mm. Thereby, the 1st protective layer 3a is easy to protect the solar cell element 4 while maintaining the light transmittance. In addition, the 1st protective layer 3a can use thermosetting resins, such as PE (polyethylene) or PVB (polyvinyl butyral), when the translucent board | substrate 2 is white board tempered glass. Even if the translucent substrate 2 is soda lime glass (refractive index: 1.51 to 1.52) or acrylic resin (refractive index: 1.48 to 1.57), the first protective layer 3a has EVA (ethylene-vinyl acetate copolymer), PE (polyethylene), PVB (polyvinyl butyral), or the like can be used.

  In the present embodiment, as described above, a plurality of recesses 2 c may be provided on the second surface 2 b of the translucent substrate 2. The plurality of recesses 2c are smaller than the thickness of the first protective layer 3a. Thereby, since the anchor effect is generated in the recess 2c of the translucent substrate 2, the adhesive force between the translucent substrate 2 and the first protective layer 3a is increased.

  The second protective layer 3b is disposed around at least the plurality of solar cell elements 4 so as not to overlap the first protective layer 3a. At this time, the 2nd protective layer 3b does not need to be arrange | positioned over the perimeter of each solar cell element 4. FIG. Moreover, the 2nd protective layer 3b may be arrange | positioned around the solar cell element group arrange | positioned at this matrix form, when the several solar cell element 4 is arrange | positioned planarly in the matrix form.

  Further, the second protective layer 3b is disposed so as to be in contact with the second surface 2b (recess 2c) of the translucent substrate 2. In this embodiment, the 2nd protective layer 3b has the colored part 3b1 in the part which adhere | attaches the 2nd surface 2b of the translucent board | substrate 2 at least. The colored portion 3b1 has a higher refractive index than the translucent substrate 2 and the first protective layer 3a.

  In this embodiment, since the 2nd protective layer 3b has the colored part 3b1, the surface (2) where the incident light 9 contacts the 2nd surface 2b of the translucent substrate 2 and the colored part 3b1 of the 2nd protective layer 3b ( It becomes easy to reflect at the interface. It can be said that such light reflection is caused by a difference in refractive index between the translucent substrate 2 and the colored portion 3b1 of the second protective layer 3b. The colored portion 3b1 may use a color having a high reflectance such as white or silver from the viewpoint of increasing the reflectance of light. Further, in the present embodiment, as shown in FIG. 1B, a plurality of concave portions are formed on the second surface 2b of the translucent substrate 2 where the translucent substrate 2 and the colored portion 3b1 of the second protective layer 3b come into contact. 2c may be provided. In such a form, diffuse reflection is likely to occur at the interface between the plurality of concave portions 2c of the light-transmitting substrate 2 and the colored portion 3b1. As shown in FIG. 3, the diffusely reflected incident light 9 spreads in the translucent substrate 2 in the in-plane direction while being multiple-reflected between the first surface 2 a and the recess 2 c of the translucent substrate 2. And the reflected light (incident light 9) which reached the 1st protective layer 3a from the translucent board | substrate 2 injects into the light-receiving surface 4a of the solar cell element 4. FIG. Since the incident light 9 is incident on the light receiving surface 4a of the solar cell element 4, it easily contributes to photoelectric conversion.

  Thus, in this embodiment, the light which cannot be directly incident on the light receiving surface 4a of the solar cell element 4 is incident on the light receiving surface 4a by reflecting the light using the second protective layer 3b. Specifically, in the present embodiment, light incident on a portion around the solar cell element 4 that deviates from the light receiving surface 4a of the solar cell element 4, for example, a gap between adjacent solar cell elements 4, is input to the gap. The light is incident on the light receiving surface 4a of the solar cell element 4 as reflected light by utilizing reflection at the interface between the second protective layer 3b and the translucent substrate 2 arranged. Thereby, in this embodiment, since the amount of received light increases, conversion efficiency increases.

  Further, in the present embodiment, since reflection is caused at a position closer to the translucent substrate 2 than the light receiving surface 4a of the solar cell element 4, light is received from the back surface 4b (second main surface) of the solar cell element 4. It is easy to make reflected light incident on the surface 4a. As a result, light that easily contributes to photoelectric conversion can be efficiently incident on the solar cell element 4.

  As such a second protective layer 3b, a white resin having a thickness of 0.3 mm to 0.8 mm may be used. Specifically, the second protective layer 3b is made of EVA (ethylene-vinyl acetate copolymer), PE (polyethylene), kneaded with a white inorganic pigment such as titanium dioxide, calcium carbonate, and aluminum oxide having a high reflectance as a colorant. A thermosetting resin such as PVB (polyvinyl butyral) can be used. For example, when transparent EVA (ethylene-vinyl acetate copolymer) is used as the base material of the second protective layer 3b and titanium dioxide is used as the white inorganic pigment, the transparent material has a refractive index of 1.50 to 1.54. In such an EVA, fine particles of titanium dioxide having a refractive index of 2.54 are dispersed. Thereby, the second protective layer 3 looks white due to the titanium dioxide particles. The refractive index of the second protective layer 3b is about 2.5, which is higher than the refractive indexes of the translucent substrate 2 and the first protective layer 3a. Further, since titanium dioxide has a relatively high reflectance, the reflectance of the second protective layer 3b is 80% to 95%. By bonding such a second protective layer 3b to the second surface 2b of the translucent substrate 2, the bonded portion becomes the colored portion 3b1. In addition, the 1st protective layer 3a of this embodiment is not restricted to what contained the coloring agent in transparent resin. For example, an originally colored resin may be used.

  The third protective layer 3 c is a resin that protects the back surface 4 b side of the solar cell element 4. From the viewpoint of protecting the solar cell element 4, a resin having a thickness of about 0.3 mm to 0.8 mm may be used as the third protective layer 3c. As such a 3rd protective layer 3c, thermosetting resins, such as PE (polyethylene) and PVB (polyvinyl butyral), other than EVA (ethylene-vinyl acetate copolymer) can be used.

  The first protective layer 3 a is not limited to the same area as the solar cell element 4. For example, when the solar cell module 1 is viewed from the first surface 2a side, the first protective layer 3a having an area larger than the area of the solar cell element 4 may be used. This makes it difficult for the colored portion 3b1 of the second protective layer 3b to enter between the translucent substrate 2 and the solar cell element 4. As a result, since the occurrence of light shielding by the colored portion 3b1 can be reduced, the amount of light received by the solar cell element 4 is unlikely to decrease. At this time, the width of the portion of the first protective layer 3 a that is larger than the solar cell element 4 is smaller than the interval between the adjacent solar cell elements 4. More specifically, when the colored portion 3b1 of the second protective layer 3b is disposed within the space between the adjacent solar cell elements 4, the first protective layer 3a protrudes from the outer peripheral portion of the solar cell element 4. The width in the region (the width in the protruding direction) may be smaller than half the width of the interval (the width in the direction between the solar cell elements 4).

  The solar cell element 4 has a function of converting incident light into electricity. Such a solar cell element 4 includes, for example, a substrate made of single crystal silicon, polycrystalline silicon, or the like, and electrodes provided on the front surface (upper surface) and back surface (lower surface) of the substrate. The electrodes disposed on the surface of the substrate are called bus bar electrodes or finger electrodes, and are formed so as to collect current in a small area from the viewpoint of increasing the effective light receiving area (solar cell element area-electrode area). Further, the light receiving surface 4a of the solar cell element 4 is provided with an antireflection film or a texture structure in order to reduce surface reflection of incident light and improve conversion efficiency. The solar cell element 4 having a single crystal silicon substrate or a polycrystalline silicon substrate has a quadrangular shape. At this time, the size of one side of the solar cell element 4 may be, for example, 100 mm to 200 mm.

  In addition, the kind in particular of the solar cell element 4 is not restrict | limited. For example, a thin film solar cell element made of a material such as amorphous silicon, CIGS, or CdTe may be employed. As the thin film solar cell element described above, for example, a glass substrate on which a photoelectric conversion layer such as an amorphous silicon layer, a CIGS layer, or a CdTe layer, a transparent electrode, and the like are appropriately laminated can be used. Such a thin film solar cell element is obtained by patterning and integrating a photoelectric conversion layer and a transparent electrode on a glass substrate. Therefore, the inner lead 5 is not used in the thin film solar cell element. The thin-film solar cell element has a strip shape. Furthermore, the solar cell element 4 may be a type in which an amorphous silicon thin film is formed on a single crystal or polycrystalline silicon substrate.

  The inner lead 5 has a function of electrically connecting adjacent solar cell elements 4 to each other. Examples of such an inner lead 5 include a copper foil coated with solder for connecting to the solar cell element 4.

  The back surface protection member 6 has a function of protecting the back surface 1b of the solar cell module 1A. Such a back surface protection member 6 is bonded to the third protective layer 3c located on the back surface 1b side of the solar cell module 1A. The back surface protection member 6 is disposed so that the solar cell element 4 and the inner lead 5 are sandwiched between the translucent substrate 2 and the protective layer 3. For example, PVF (polyvinyl fluoride), PET (polyethylene terephthalate), PEN (polyethylene naphthalate) having a thickness of 0.3 mm to 0.5 mm, or a laminate of two or more of these are provided on the back surface protection member 6. Resin can be used.

  The terminal box 7 takes out the output obtained by the solar cell element 4 to the outside. The terminal box 7 has a box, a terminal plate disposed in the box, and an output cable for taking out electric power to the outside of the box. Examples of the material of the box include modified PPE resin (modified polyphenylene ether resin) or PPO resin (polyphenylene oxide resin).

  Next, the test which compares the electric power generation amount of 1 A of solar cell modules of 1st Embodiment and the conventional solar cell module 1 of a super straight structure was done. In this test, the amount of power generation in one solar cell element in the solar cell module is measured.

  As shown in FIG. 4B, the solar cell module 1A according to the first embodiment includes a single solar cell element 4 to which the inner leads 5 are connected, a translucent substrate 2 having a recess 2c, and a first protective layer. The solar cell module laminated and integrated with 3a, the 2nd protective layer 3b, the 3rd protective layer 3c, and the back surface protection member 6 was used.

  On the other hand, the solar cell module 10 as a comparative example has one solar cell element 4 to which the inner lead 5 is connected, the translucent substrate 2, the first protective layer 3a, the third protective layer 3c, and the back surface protective member 6. And a solar cell module integrated with each other. As described above, the solar cell module 10 is different from the solar cell module 1A in that the second protective layer 3b is not provided as shown in FIG.

  In addition, the solar cell module 1A and the solar cell module 10 used the member of the same material. Specifically, white tempered glass is used for the translucent substrate 2, transparent EVA is used for the first protective layer 3a, and EVA in which a white inorganic pigment of titanium dioxide is kneaded is used for the second protective layer 3b and the third protective layer 3c. ing. Moreover, 1 A of solar cell modules and the solar cell module 10 used the solar cell which used the polycrystalline silicon substrate for the solar cell element 4, and used PET for the back surface protection member 6. FIG.

  Moreover, in order to confirm the influence of the area of the recessed part 2c around the solar cell element 4, as shown in FIG. 4, the solar cell module 1 is planarly viewed from the surface 1a side on the first surface 2a of the translucent substrate 2. Then, when the mask 8 was arranged at a distance δ from the outer periphery of the solar cell element 4 and the distance m was 2 mm, 5 mm, and 10 mm, the magnitude of each short-circuit current Isc was measured. As compared with the conventional solar cell module 10, the solar cell module 1A of the first embodiment has confirmed that the short-circuit current Isc is increased by about 0.5% to 0.9%. Further, the short circuit current Isc increased in proportion to the distance m. Thereby, in this embodiment, the short circuit current Isc was able to be increased by making the light reflected by the 2nd protective layer 3b arrange | positioned around the solar cell element 4 in the light-receiving surface 4a. As a result, the conversion efficiency of the solar cell module was improved.

<< Second Embodiment >>
As shown in FIG. 5, the solar cell module 1 </ b> B according to the second embodiment is different from the first embodiment in the shape of the protective layer 3. Specifically, the second protective layer 3 b is in contact with the second surface 2 b of the translucent substrate 2 around the solar cell element 4 and is also in contact with the back surface 4 b of the solar cell element 4. That is, in this embodiment, the 2nd protective layer 3b is arrange | positioned so that the circumference | surroundings and the back surface 4b of the solar cell element 4 may be covered. Therefore, the third protective layer 3c is not provided in the present embodiment.

  As in the first embodiment, the second protective layer 3b in the present embodiment is made of EVA (ethylene-vinyl acetate copolymer), PVB kneaded with a white inorganic pigment such as titanium dioxide, calcium carbonate, and aluminum oxide having a high reflectance. Any thermosetting resin such as (polyvinyl butyral) may be used.

  In the present embodiment, since the second protective layer 3b covers the periphery of the solar cell element 4 and the back surface 4b, it is possible to reduce the amount of materials used as compared with the first embodiment while increasing the amount of received light. As a result, in this embodiment, a solar cell module having a simpler structure can be obtained. Such a 2nd protective layer 3b may be formed using the resin sheet which enlarged the thickness of the part previously corresponded to the circumference | surroundings of the solar cell element 4, for example.

«Third embodiment»
As shown in FIG. 6, the solar cell module 1 </ b> C according to the third embodiment is different from the first and second embodiments in the shape of the protective layer 3. Specifically, in the present embodiment, the first protective layer 3 a has hole portions 3 a 1 at positions corresponding to the periphery of the plurality of solar cell elements 4. Therefore, the 1st protective layer 3a is comprised by the sheet-like member by which the several hole 3a1 was provided in the part which does not overlap with the solar cell element 4, when the solar cell module 1 is planarly viewed from the surface 1a side. . Such a first protective layer 3a can be formed by punching a sheet-like protective layer.

  In the present embodiment, the second protective layer 3b is disposed from the periphery of the plurality of solar cell elements 4 to the hole 3a1 of the first protective layer 3a, and the colored portion 3b1 passes through the hole 3a1. It is in contact with the second surface 2b of the optical substrate 2. Thereby, similarly to 1st Embodiment and 2nd Embodiment, light can be reflected in the interface of the 2nd surface 2b of the translucent board | substrate 2, and the colored part 3b1. In the present embodiment, the third protective layer 3c is not provided as in the second embodiment.

  As described above, in the present embodiment, by using the first protective layer 3a provided with the hole 3a1, when the solar cell modules 1C are stacked and integrated, the number of steps for arranging the first protective layer 3a is omitted. it can. That is, productivity can be improved compared with the case where the 1st protective layer 3a is provided according to each solar cell element 4. FIG.

  In the present embodiment, as shown in FIGS. 6 and 7, the second protective layer 3 b is located in the space between the solar cell elements 4 from the periphery of the plurality of solar cell elements 4. The colored portion 3b1 may be in contact with the second surface 2b of the translucent substrate 2 through the hole 3a1. Thereby, since light can be reflected also in the gap | interval part (space | interval) between adjacent solar cell elements 4, the received light quantity of the solar cell element 4 can be increased more.

  The hole 3a1 may be provided so as to avoid the inner lead 5 when the solar cell module 1C is viewed in plan from the first surface 2a side. Thereby, the inner lead 5 can be more reliably sealed with the protective layer 3 (the first protective layer 3a and the second protective layer 3b).

<< Fourth Embodiment >>
As shown in FIG. 8, the solar cell module 1D according to the fourth embodiment of the present invention differs from the first to third embodiments in the configuration of the first protective layer 3a and the second protective layer 3b. Specifically, the first protective layer 3 a is configured by a sheet-like member having a main surface having substantially the same area as the main surface of the light-transmitting substrate 2, and the first protective layer 3 a includes the light-transmitting substrate 2 and the solar cell element 4. Arranged between. The second protective layer 3b is provided with a coating material as a colored portion 3a1 at a portion located between the adjacent solar cell elements 4 when the solar cell module 1C is viewed in plan from the surface 1a side. The coating material may be in a form in which a coating material is provided on a base material such as a resin, but may be in a form in which a coating material is provided on the second surface 2 b of the translucent substrate 2.

  As such a coating material, a paint colored in a color having a high reflectance such as white or silver may be used. Such a second protective layer 3b is formed, for example, by ceramic coating in which a resin paint kneaded with an inorganic pigment such as titanium dioxide, calcium carbonate, or aluminum oxide is applied to the second surface 2b of the translucent substrate 2 and then dried. can do.

  In the present embodiment, since the structure can be made simpler by approaching the super straight structure, productivity is increased.

1, 1A, 1B, 1C, 1D: Solar cell module 1a: Front surface 1b: Back surface 2: Translucent substrate 2a: First surface 2b: Second surface 2c: Recessed portion 3: Protective layer 3a: First protective layer 3a1: Hole 3b: Second protective layer 3b1: Colored portion 3c: Third protective layer 4: Solar cell element 4a: Light receiving surface (first main surface)
4b: Back surface (second main surface)
5: Inner lead 6: Back surface protection member 7: Terminal box 8: Mask 9: Incident light 10: Solar cell module

A solar cell module according to an embodiment of the present invention includes a translucent substrate having a first surface and a second surface located on the back surface of the first surface, and a translucency disposed on the second surface. electricity and first protective layer, a plurality of solar cell elements having a second main surface located on the back side of the first main surface and the first major surface in contact with the first protective layer, a solar cell elements adjacent with and the inner leads connected, while being arranged so as to cover the second main surface from the periphery of the solar cell element of multiple subjected on the solar cell element, the second having a colored portion in contact with the second surface obtain Bei and a protective layer, a. Furthermore, in the present embodiment, the first protective layer has a hole around the plurality of solar cell elements, and the second protective layer extends from the periphery of the plurality of solar cell elements to the first protective layer. And the colored portion is in contact with the second surface through the hole portion, and the hole portion has the inner lead in a plan view from the first surface side. It is provided to avoid.

Claims (10)

A translucent substrate having a first surface and a second surface located on the back surface of the first surface;
A first protective layer having translucency disposed on the second surface;
A plurality of solar cell elements disposed on the first protective layer;
A solar cell module comprising: a second protective layer having a colored portion in contact with the second surface, which is disposed around at least the plurality of solar cell elements.   2. The solar cell module according to claim 1, wherein the translucent substrate has a plurality of recesses smaller than the thickness of the first protective layer on the second surface that is in contact with the colored portion. The solar cell element has a first main surface in contact with the first protective layer and a second main surface located on the back surface of the first main surface,
The solar cell module according to claim 1 or 2, wherein the second protective layer is disposed so as to cover the second main surface from the periphery of the solar cell element to the top of the solar cell element.   The solar cell module according to claim 1, wherein the colored portion of the second protective layer includes a colored resin.   The solar cell module according to claim 4, wherein the resin is colored white.   The solar cell module according to claim 1 or 2, wherein the colored portion of the second protective layer includes a colored coating material. The solar cell elements are spaced apart from each other and electrically connected to each other,
The solar cell module according to any one of claims 1 to 6, wherein the second protective layer is also disposed in an interval between the solar cell elements. The first protective layer has a region protruding from the outer peripheral portion of the solar cell element when viewed from the first surface side,
The solar cell module according to claim 7, wherein a width of the region is smaller than a width of the gap in a direction in which the first protective layer protrudes. The first protective layer has a hole around the plurality of solar cell elements,
The second protective layer is arranged from the periphery of the plurality of solar cell elements to the hole of the first protective layer, and the colored portion is in contact with the second surface through the hole. The solar cell module according to any one of claims 1 to 8. The first protective layer has a hole around each of the plurality of solar cell elements,
The second protective layer is disposed from the periphery of the plurality of solar cell elements to the hole portion of the first protective layer located within the space between the solar cell elements, and the colored portion extends in the hole portion. The solar cell module according to claim 8, which is in contact with the second surface.

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