Solar cell module

Abstract

This solar cell module is provided with a module body (2) comprising: a plate-shaped solar cell (3) comprising a front surface (3a) and a rear surface (3b); a front-side protective plate (4) facing the front surface (3a) of the solar cell (3) and having translucency; and a rear-side protective plate body (51) facing the rear surface (3b) of the solar cell (3) and sandwiching the solar cell (3) between the rear-side protective plate body (51) and the front-side protective plate (4). The module body (2) comprises a non-power generation part (R2), which is a part where the solar cell (3) is not disposed, at a peripheral edge portion. The non-power generation part (R2) includes a reflection region (R20) capable of reflecting light transmitted through the front-side protective plate (4) at least to the front surface side at a position closer to the rear surface side than the solar cell (3), and a non-reflection region (R21) that does not reflect light incident on the front-side protective plate (4).

Description

Solar cell module ,

[0008] , ,

[0007] Cross-reference to related applications

[0001] This application claims the priority of Japanese Patent Application No. 2024-230970 and Japanese Patent Application No. 2025-144233, and the contents of Japanese Patent Application No. 2024-230970 and Japanese Patent Application No. 2025-144233 are incorporated into the description of this application by reference.

[0002] The present invention relates to a solar cell module including a solar cell.

[0003] Conventionally, a solar cell module including a solar cell protected by a front packaging component and a back packaging component is known (see Patent Document 1).

[0004] In this solar cell module, the front packaging component includes a transparent top cover on the front part of the solar cell module, and the back packaging component has a reflective part that reflects light incident from the front (surface) of the solar cell module. Then, the light incident from the front part and passing between the solar cells is reflected by the reflective part, and a part of the reflected light is reflected on the surface of the transparent top cover or the like, and then enters the front of the solar cell. Thereby, the power generation efficiency of the solar cell module is improved.

[0005] In the above solar cell module, since the sunlight incident from the front part is reflected by the reflective part, the reflective part becomes conspicuous when the solar cell module is viewed from the front side.

[0006] Japanese Unexamined Patent Application Publication No. 2018-137465

[0007] Therefore, an object of the present invention is to provide a solar cell module in which the reflection region is less conspicuous when viewed from the surface side.

[0008] The solar cell module according to the present invention comprises a module body having a plate-shaped solar cell having a front surface and a back surface, a front protective plate facing the front surface of the solar cell and being light-transmitting, and a back protective plate body facing the back surface of the solar cell and sandwiching the solar cell between itself and the front protective plate, wherein the module body has a non-power-generating portion at its periphery, which is a portion where the solar cell is not arranged, and the non-power-generating portion includes a reflective region at a position on the back side of the solar cell that can reflect at least light transmitted through the front protective plate to the front side, and a non-reflective region that does not reflect light incident on the front protective plate.

[0009] In the aforementioned solar cell module, the non-reflective region may be transparent.

[0010] Furthermore, in the solar cell module, the reflective region has a colored layer laminated on the surface of the back protective plate body and reflecting light transmitted through the front protective plate, and a first sealing layer that seals the space between the front protective plate and the colored layer; the non-reflective region has a second sealing layer that seals the space between the front protective plate and the back protective plate body; and the front protective plate and the back protective plate body may be made of glass.

[0011] Furthermore, in the solar cell module, the reflective region may be located adjacent to the power generation section, which is the part of the module body where the solar cells are arranged, and the non-reflective region may be located on the peripheral side of the module body relative to the reflective region.

[0012] Furthermore, the solar cell module includes a frame that supports the module body by holding the peripheral edge of the module body, the frame having a flange at its rear end, the flange extending in at least one direction to the inside and outside of the frame when viewed from the stacking direction of the front protective plate and the rear protective plate body, and may also extend in the direction of the peripheral edge of the module body.

[0013] Furthermore, in the solar cell module, the frame may have a portion that faces the back protective plate body from the back side at the portion that holds the peripheral edge of the module body, and the non-power-generating portion may have a concealing portion that is arranged in a region including the end of the facing portion when viewed from the stacking direction and makes the back side invisible.

[0014] Figure 1 is a view of the solar cell module according to this embodiment, seen from the front. Figure 2 is a view of the solar cell module from the back. Figure 3 is a view of the module body of the solar cell module, seen from the front, illustrating the power generation section and the non-power generation section. Figure 4 is a cross-sectional view of the position IV-IV in Figure 3. Figure 5 is a view of the back protective plate of the module body, seen from the front. Figure 6 is a schematic cross-sectional view of the end of the solar cell module. Figure 7 is a schematic cross-sectional view of the end of a solar cell module according to another embodiment. Figure 8 is a schematic cross-sectional view of the end of a module body according to another embodiment. Figure 9 is a view of the back protective plate according to another embodiment, seen from the front. Figure 10 is an enlarged view of the part indicated by X in Figure 9. Figure 11 is a view of the back protective plate according to another embodiment, seen from the front. Figure 12 is an enlarged view of the part indicated by XII in Figure 11.

[0015] The following describes one embodiment of the present invention with reference to Figures 1 to 6.

[0016] As shown in Figures 1 to 4, the solar cell module 1 according to this embodiment includes a plate-shaped module body 2. The solar cell module 1 also includes a frame 10 that supports the module body 2 by holding its peripheral edge.

[0017] The module body 2 comprises a plate-shaped solar cell 3 having a front surface 3a and a back surface 3b, a front protective plate 4 facing the front surface 3a of the solar cell 3, and a back protective plate 5 facing the back surface 3b of the solar cell 3. The module body 2 also includes a sealing material layer 6 between the front protective plate 4 and the back protective plate 5 to seal the solar cell 3 (see Figure 4). In this embodiment, the module body 2 comprises multiple solar cells 3, and the multiple solar cells 3 are sandwiched between the opposing front protective plate 4 and back protective plate 5 via a sealing material and integrated through a lamination process.

[0018] Furthermore, the module body 2 has a terminal box 7 on its back side (see Figure 2). The module body 2 in this embodiment has three terminal boxes 7.

[0019] The solar cell 3 is a plate-shaped component that generates electricity when light is incident on it, and multiple solar cells 3 are arranged in a matrix. In this embodiment, the solar cell 3 is a rectangular plate shape, and in the multiple solar cells 3 arranged in a matrix, gaps S are formed between adjacent solar cells 3 (see Figure 1). These multiple solar cells 3 are connected in series.

[0020] Specifically, the solar cell 3 is constructed by connecting multiple solar cells in series with wires (for example, by interconnecting them). In this embodiment, the solar cell 3 is formed by electrically connecting adjacent solar cells with wires (interconnecting them) in a plurality of rectangular solar cells. The solar cell 3 in this embodiment is a double-sided light-receiving type. That is, both the front surface 3a and the back surface 3b of the solar cell 3 are light-receiving surfaces.

[0021] The front protective plate 4 is a translucent plate-shaped member. Specifically, the front protective plate 4 is a transparent rectangular plate. In this embodiment, the front protective plate 4 is made of glass.

[0022] The back protective plate 5 is a plate-shaped member that sandwiches the solar cell 3 between itself and the front protective plate 4. As shown in Figure 5, the back protective plate 5 of this embodiment has a plate-shaped protective plate body (back protective plate body) 51 and a colored layer 52 laminated on the protective plate body 51. In Figure 5, the transparent parts are indicated by dots.

[0023] The protective plate body 51 is a translucent plate-shaped member. Specifically, the protective plate body 51 is a transparent rectangular plate. In this embodiment, the protective plate body 51 is made of glass.

[0024] The colored layer 52 is laminated on the surface 51a of the protective plate body 51 and reflects light that has passed through the front protective plate 4. This colored layer 52 has a frame portion 521 that surrounds the periphery of a plurality of solar cells 3 arranged in a matrix, and a grid portion 522 that is positioned inside the frame portion 521 at a location corresponding to the space between adjacent solar cells 3. In this embodiment, the colored layer 52 is laminated on the surface 51a of the protective plate body 51 by ceramic printing. This colored layer 52 is white, but is not limited to this color and may be red, green, silver, etc. In other words, the color of the colored layer 52 should be a color that easily reflects light.

[0025] The frame portion 521 is positioned so that its inner circumference overlaps with the outermost solar cell 3 in a matrix arrangement of multiple solar cells 3 (see Figure 6). Furthermore, the width of each linear portion constituting the grid portion 522 is greater than the gap S between the solar cells 3.

[0026] In the solar cell module 1 of this embodiment, the distance α from the tab wire 31 used to connect (make electrically connected) the solar cells 3 to the edge of the colored layer 52 (more specifically, the frame portion 521) is 10 mm or more (see the partially enlarged view of Figure 1).

[0027] Furthermore, the back protective plate 5 of this embodiment has through holes H for wiring extraction. When viewed from the front (front side), the back protective plate 5 of this embodiment has multiple through holes H (three in the example of Figure 5) spaced apart in the left-right direction at the upper end.

[0028] The sealing layer 6 is composed of a sealing material that seals the solar cell 3 between the front protective plate 4 and the back protective plate 5. The sealing layer 6 in this embodiment includes a front sealing layer 61 formed between the solar cell 3 and the front protective plate 4 in the portion of the module body 2 where the solar cell 3 is arranged (power generation portion: the area indicated by the dots on the central side in Figure 3) R1, a back sealing layer 62 formed between the solar cell 3 of the power generation portion R1 and the back protective plate 5, and a peripheral sealing layer 63 formed between the front protective plate 4 and the back protective plate 5 in the portion of the module body 2 where the solar cell 3 is not arranged (non-power generation portion: the area indicated by the dots on the peripheral side in Figure 3) R2 (see Figures 3 and 4). In this sealing layer 6, the front sealing layer 61, the back sealing layer 62, and the peripheral sealing layer 63 are integrally formed from the same type of sealing material.

[0029] The peripheral sealing layer 63 includes a first sealing layer 64 that seals the space between the front protective plate 4 and the colored layer 52 of the back protective plate 5, and a second sealing layer 65 that seals the space between the front protective plate 4 and the protective plate body 51 of the back protective plate 5.

[0030] The terminal box 7 houses diodes and the like and is positioned in the middle of a series of solar cells 3 connected in series (in the middle of the circuit). This terminal box 7 prevents reverse current flow when some of the solar cells 3 do not generate power due to shading or the like. In this embodiment, the terminal box 7 is positioned on the back surface 51b of the back protective plate 5, in a position that overlaps with the frame portion 521 of the colored layer 52 when viewed from the stacking direction. The position of the terminal box 7 is not limited, but since it is necessary to make holes in the back protective plate 5 for wiring etc. in order to install the terminal box 7, it is preferable to position it away from the periphery of the back protective plate 5 to prevent cracking.

[0031] As shown in Figure 6, the frame 10 has a frame-shaped frame body 11 that holds the peripheral edge of the module body 2, and a flange portion 15 extending from the frame body 11.

[0032] The frame body 11 is rectangular in shape, corresponding to the module body 2, and has a recess 12 into which the peripheral edge of the module body 2 fits. The cross-sectional shape of this frame body 11 (the shape shown in Figure 6) is a long rectangle in the stacking direction of the front protective plate 4 and the back protective plate 5 (the vertical direction in Figure 6; hereinafter also simply referred to as the "stacking direction"). In the frame body 11 of this embodiment, the portion on the back side (the lower side in Figure 6) of the recess 12 is hollow.

[0033] The recess 12 is composed of a first opposing portion 121 facing the front protective plate 4, a second opposing portion 122 facing the back protective plate 5, and a third opposing portion 123 facing the peripheral end surface of the module body 2 and connecting the first opposing portion 121 and the second opposing portion 122. The distance between the first opposing portion 121 and the second opposing portion 122 is slightly greater than the thickness of the module body 2. In the frame 10 of this embodiment, the peripheral edge of the module body 2 is fixed to the recess 12 by a sealing member or adhesive applied inside the recess 12.

[0034] The flange portion 15 extends from the back end of the frame body 11. When viewed from the stacking direction, the flange portion 15 extends from the back end of the frame body 11 to at least one of the inside and outside of the frame 10, and also extends in the periphery direction of the module body 2 (the direction in which the frame body 11 extends). In this embodiment, when viewed from the stacking direction, the flange portion 15 extends from the back end of the frame body 11 to the inside of the frame 10 (the right side in Figure 6), and also extends in the periphery direction of the module body 2.

[0035] In the frame 10 of this embodiment, a flange portion 15 of a constant width (a constant amount of protrusion from the frame body 11) is arranged over the entire circumferential area of ​​the frame 10. The flange portion 15 also has a plurality of holes 151 that are spaced apart in the circumferential direction of the module body 2 (see Figure 2). These holes 151 penetrate the flange portion 15 in the stacking direction and are used to insert bolts or the like when installing (fixing, etc.) the solar cell module 1.

[0036] In the module body 2 of the solar cell module 1 configured as described above, the non-power-generating portion R2 includes a reflective region R20 at a position on the back side of the solar cell 3 that can reflect light transmitted through the front protective plate 4 to the front side, and a non-reflective region R21 that does not reflect light incident on the front protective plate 4 (see Figure 4).

[0037] The reflective region R20 is located adjacent to the power generation unit R1. In this embodiment, the reflective region R20 surrounds the power generation unit R1 around its entire circumference. In the reflective region R20 of this embodiment, the front protective plate 4, the first sealing material layer 64, the colored layer 52, and the protective plate body 51 are arranged sequentially in the stacking direction from the front side to the back side.

[0038] The non-reflective region R21 is located on the peripheral side (outside) of the module body 2 relative to the reflective region R20. In this embodiment, the non-reflective region R21 is located at both ends in the vertical direction of the module body 2 in Figure 3. In the non-reflective region R21 of this embodiment, the front protective plate 4, the second sealing material layer 65, and the protective plate body 51 are arranged sequentially in the stacking direction from the front side to the back side. In this non-reflective region R21, there is no light-reflecting colored layer 52 like in the reflective region R20, and it is transparent. Also, in the non-reflective region R21, the back surface of the front protective plate 4, where the glass is exposed, and the front surface 51a of the protective plate body 51 are in close contact with the second sealing material layer 65. In this embodiment of the solar cell module 1, when the frame 10 is attached to the module body 2, the non-reflective region R21 is only visible on the upper peripheral edge of the solar cell module 1 when viewed from the front side. Here, "upper peripheral edge" refers to the portion located at the upper end of the solar cell module 1 (module body 2) when the solar cell module 1 is installed (the peripheral edge portion).

[0039] The solar cell module 1 described above comprises a module body 2 having a plate-shaped solar cell 3 having a front surface 3a and a back surface 3b, a front protective plate 4 facing the front surface 3a of the solar cell 3 and being light-transmitting, and a protective plate body (back protective plate body) 51 facing the back surface 3b of the solar cell 3 and sandwiching the solar cell 3 between itself and the front protective plate 4. The module body 2 has a non-power-generating portion R2 at its periphery, which is a portion where the solar cell 3 is not arranged. The non-power-generating portion R2 includes a reflective region R20 that can reflect at least light transmitted through the front protective plate 4 to the front side at a position on the back side of the solar cell 3, and a non-reflective region R21 that does not reflect light incident on the front protective plate 4.

[0040] In this way, by providing a non-reflective region R21 in the non-power-generating portion R2 formed on the periphery of the module body 2, the area of ​​the reflective region R20 is reduced, and as a result, the reflective region R20 becomes less noticeable when the solar cell module 1 is viewed from the surface side.

[0041] Furthermore, in the solar cell module 1 of this embodiment, the non-reflective region R21 is transparent. This allows the back side to be viewed through the non-reflective region R21, enabling workers to see the components and structure on the back side from the front side of the solar cell module 1 during installation work.

[0042] Furthermore, in the solar cell module 1 of this embodiment, the reflective region R20 has a colored layer 52 laminated on the surface 51a of the protective plate body (back protective plate body) 51 and reflecting light transmitted through the front protective plate 4, and a first sealing material layer 64 that seals the space between the front protective plate 4 and the colored layer 52, and the non-reflective region R21 has a second sealing material layer 65 that seals the space between the front protective plate 4 and the protective plate body 51, and the front protective plate 4 and the protective plate body 51 are made of glass.

[0043] Because the adhesive strength between the glass and the sealant is stronger than the adhesive strength between the colored layer 52 and the sealant, by providing a portion (non-reflective region) R21 in the non-power-generating section R2 where the glass protective plate body 51 and the second sealant layer 65 are in contact, delamination of the protective plate body 51 becomes less likely to occur in the non-power-generating section R2 of the module body 2.

[0044] Further, in the solar cell module 1 of the present embodiment, the reflection region R20 is disposed at a position adjacent to the power generation portion R1, which is the portion where the solar cells 3 are disposed in the module body 2, and the non-reflection region R21 is disposed on the peripheral side (outer side) of the module body 2 with respect to the reflection region R20. Thus, by disposing the reflection region R20 at a position where the reflected light easily reaches the solar cells 3 (i.e., a position close to the power generation portion R1), even if the non-power generation portion R2 has the non-reflection region R21, a decrease in the power generation efficiency of the solar cell module 1 can be suppressed.

[0045] Further, the solar cell module 1 of the present embodiment includes a frame 10 that supports the module body 2 by holding the peripheral portion of the module body 2. The frame 10 has a flange portion 15 at the end on the back side, and the flange portion 15 extends inside the frame 10 and extends in the peripheral direction of the module body 2 when viewed from the stacking direction of the front side protective plate 4 and the protective plate main body (back side protective plate main body) 51. Thus, by having the flange portion 15 on the frame 10, the strength of the frame 10 can be ensured.

[0046] Note that the solar cell module of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention. For example, the configuration of another embodiment can be added to the configuration of a certain embodiment, and a part of the configuration of a certain embodiment can be replaced with the configuration of another embodiment. Further, a part of the configuration of a certain embodiment can be deleted.

[0047] In the reflection region R20 of the solar cell module 1 of the above embodiment, the colored layer 52 that reflects the light transmitted through the front side protective plate 4 is formed (laminated) on the surface 51a of the protective plate main body 51 by printing, but is not limited to this configuration. The colored layer 52 may be formed (disposed) on the back surface of the protective plate main body 51. Further, a member having a configuration different from the back side protective plate 5 such as a metal foil may constitute the colored layer 52. That is, the colored layer 52 may be located on the back side of the solar cells 3 in the module body 2 and reflect the light transmitted through the front side protective plate 4 to the front side. Further, when the colored layer 52 is a member having a configuration different from the back side protective plate 5, the back side protective plate 5 may be constituted only by the protective plate main body 51.

[0048] Further, although the solar cell 3 in the above embodiment is a double-sided light-receiving type, it is not limited to this configuration. The solar cell 3 may be a single-sided light-receiving type. Even in this case, by forming the reflection region R20, the amount of light incident on the surface (light-receiving surface) of the solar cell 3 increases.

[0049] Further, in the solar cell module 1 of the above embodiment, in the part included in the power generation part R1 in the backside protection plate 5, the part other than the lattice-shaped colored layer 52 (lattice part 522) is transparent, but it is not limited to this configuration. The part included in the power generation part R1 in the backside protection plate 5 may be non-transparent.

[0050] Further, in the solar cell module 1 of the above embodiment, the front-side protection plate 4 is made of glass, but it is not limited to this configuration. The front-side protection plate 4 may be made of a transparent resin such as a resin-made transparent sheet.

[0051] Further, in the solar cell module 1 of the above embodiment, the backside protection plate 5 (specifically, the protection plate main body 51) is made of glass, but it is not limited to this configuration. The backside protection plate 5 (protection plate main body 51) may be made of resin such as a backsheet. In this case, the reflection region R20 and the non-reflection region R21 may be formed by a combination of a transparent sheet and a colored sheet. Also, the protection plate main body 51 may be in a thin sheet shape.

[0052] Further, in the solar cell module 1 of the above embodiment, the solar cell 3 is a solar cell string composed of a plurality of solar cells, but it is not limited to this configuration. The solar cell 3 may be composed of a single solar cell.

[0053] Further, in the solar cell module 1 of the above embodiment, the non-reflection region R21 of the non-power generation part R2 is arranged on two opposite sides at the peripheral edge of the rectangular module main body 2, but it is not limited to this configuration. The non-reflection region R21 may be arranged on each side at the peripheral edge of the rectangular module main body 2, or may be arranged on any three sides. That is, the non-reflection region R21 only needs to be arranged on at least one side at the peripheral edge of the rectangular module main body 2.

[0054] Furthermore, the non-reflective region R21 may be arranged intermittently in the circumferential direction at the periphery of the module body 2. That is, if the non-reflective region R21 is located at any position in the non-power generation section R2, the range (area) of the reflective region R20 in the non-power generation section R2 is reduced, thereby reducing the prominence of the reflective region R20 when the solar cell module 1 is viewed from the surface side.

[0055] Furthermore, although the non-reflective region R21 in the solar cell module 1 of the above embodiment is transparent, the configuration is not limited to this. The non-reflective region R21 may be colored with a color that does not reflect or reflects light poorly, such as black. In this case, it is sufficient that a layer that does not reflect light or a layer that reflects light poorly is placed at any position in the non-reflective region R21 in the stacking direction. Alternatively, any of the front protective plate 4, back protective plate 5, and second sealing material layer 65 that constitute the non-reflective region R21 may be configured to absorb light.

[0056] Furthermore, in the solar cell module 1 of the above embodiment, the structure of the inside of the frame 10 and other components can be seen from the front side of the solar cell module 1 through the transparent non-reflective region R21, but the configuration is not limited to this.

[0057] For example, as shown in Figure 7, in the solar cell module 1, the frame 10 has a second opposing portion (opposing portion) 122 that faces the protective plate body (back protective plate body) 51 from the back side in the portion that holds the peripheral edge of the module body 2, and the non-power-generating portion R2 may have a concealing portion 8 that is arranged in the region including the end of the second opposing portion 122 when viewed from the stacking direction and makes the back side invisible.

[0058] In this way, by placing the concealing portion 8 in the region including the second opposing portion 122, the back side of that portion (the portion where the concealing portion 8 is placed) becomes invisible, thus preventing any material protruding from the end of the second opposing portion 122 (such as a sealing member or adhesive placed between the peripheral edge of the module body 2 and the second opposing portion 122) from being visible from the front side.

[0059] The concealing portion 8 may have the same configuration as the colored layer 52 in the above embodiment. That is, the concealing portion 8 may be formed by ceramic printing on the surface 51a of the protective plate body 51. The concealing portion 8 may also have a different configuration (a different component) from the back protective plate 5. Alternatively, the concealing portion 8 may be formed by making the back side invisible by coloring or the like on a corresponding portion of at least one of the front protective plate 4 and the back protective plate 5.

[0060] Furthermore, the concealing portion 8 is not limited to being laminated on the surface 51a of the protective plate body 51, but may be positioned on the back surface 51b of the protective plate body 51, or on the front side of the back surface 51b.

[0061] Furthermore, as shown in Figure 8, the concealing portion 8 may be positioned to conceal only the end of the second opposing portion 122 and its surrounding area.

[0062] Furthermore, in the solar cell module 1 of the above embodiment, the flange portion 15 of the frame 10 extends inward (to the right in Figure 6), but the configuration is not limited to this. The flange portion 15 may extend outward (to the left in Figure 6) of the frame 10. Also, the flange portion 15 may be arranged intermittently in the circumferential direction of the frame 10. Moreover, the frame 10 may be configured without the flange portion 15, i.e., consisting only of the frame body 11.

[0063] In the back protective plate 5, the arrangement pattern of the colored layer 52 placed on (overlaid on) the protective plate body 51 is not limited. For example, the colored layer 52 may have the configuration (arrangement pattern) shown in Figures 9 and 10. That is, in the non-power-generating section R2, the colored layer (outer colored section) 523 may be placed outside the frame section 521, with a gap between it and the frame section 521. Note that in Figures 9 and 10, the transparent portion is shown as a dot.

[0064] Furthermore, as shown in Figures 11 and 12, in the back protective plate 5, the end of the transparent portion surrounded by the frame portion 521 and the outer colored portion 523 may protrude from the end of the transparent portion surrounded by the frame portion 521 (the area overlapping with the solar cell 3) (see reference numeral B in Figure 12). Note that in Figures 11 and 12, the transparent portion is indicated by a dot.

[0065] In order to express the present invention, the invention has been adequately and sufficiently described above through embodiments with reference to the drawings, but those skilled in the art should recognize that it is easy to modify and / or improve the above embodiments. Accordingly, unless such modifications or improvements implemented by those skilled in the art deviate from the scope of the claims described in the claims, such modifications or improvements shall be interpreted as being included within the scope of the claims.

[0066] 1...Solar cell module, 2...Module body, 3...Solar cell, 3a...Front surface, 3b...Back surface, 31...Tab wire, 4...Front protective plate, 5...Back protective plate, 51...Protective plate body (Back protective plate body), 51a...Front surface, 51b...Back surface, 52...Colored layer, 521...Frame part, 522...Grid part, 523...Outer colored part, 6...Sealing material layer, 61...Front sealing material layer, 62...Back sealing material layer, 63...Peripheral sealing material layer, 6 4...First sealing layer, 65...Second sealing layer, 7...Terminal box, 8...Concealing section, 10...Frame, 11...Frame body, 12...Recess, 121...First opposing section, 122...Second opposing section, 123...Third opposing section, 15...Flange section, 151...Hole, B...Protrusion amount, H...Through hole, α...Distance from tab wire to the end of frame section 521, R1...Power generation section, R2...Non-power generation section, R20...Reflective area, R21...Non-reflective area, S...Gap

Claims

1. A solar cell module comprising a module body having a plate-shaped solar cell having a front surface and a back surface, a front protective plate facing the front surface of the solar cell and being light-transmitting, and a back protective plate body facing the back surface of the solar cell and sandwiching the solar cell between itself and the front protective plate, wherein the module body has a non-power-generating portion at its periphery, which is a portion where the solar cell is not arranged, and the non-power-generating portion includes a reflective region at a position on the back side of the solar cell that can reflect at least light transmitted through the front protective plate to the front side, and a non-reflective region that does not reflect light incident on the front protective plate.

2. The solar cell module according to claim 1, wherein the non-reflective region is transparent.

3. The solar cell module according to claim 1 or 2, wherein the reflective region has a colored layer laminated on the surface of the back protective plate body and reflecting light transmitted through the front protective plate, and a first sealing layer sealing the space between the front protective plate and the colored layer, the non-reflective region has a second sealing layer sealing the space between the front protective plate and the back protective plate body, and the front protective plate and the back protective plate body are made of glass.

4. The solar cell module according to claim 1 or 2, wherein the reflective region is located adjacent to the power generation section, which is the part of the module body where the solar cell is located, and the non-reflective region is located on the peripheral edge side of the module body relative to the reflective region.

5. A solar cell module according to claim 1 or 2, comprising a frame that supports the module body by holding the peripheral edge of the module body, wherein the frame has a flange at its rear end, and the flange extends in at least one direction to the inside and outside of the frame, as viewed from the stacking direction of the front protective plate and the rear protective plate body, and also extends in the peripheral direction of the module body.

6. The solar cell module according to claim 5, wherein the frame has a portion that faces the back protective plate body from the back side in the portion that holds the peripheral edge of the module body, and the non-power-generating portion has a concealing portion that is arranged in a region including the end of the facing portion when viewed from the stacking direction and makes the back side invisible.

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