Power generation module and building window equipped therewith

Abstract

The present invention provides a power generation module that reduces damage to the circuit board and a building window equipped with the same. [Solution] The power generation module comprises a first substrate and a second substrate facing each other, a sealing member disposed between the first substrate and the second substrate along the outer edges of the first substrate and the second substrate and sealing the internal space between the first substrate and the second substrate, a power generation element disposed inside the first substrate or the second substrate, a filler disposed between the first substrate and the second substrate and covering the power generation element, and a protective member disposed on the outer surface of at least one of the first substrate and the second substrate. The protective member is disposed at least from the outer edge of the filler to the outer edge of the first substrate or the second substrate.

Description

Technical Field

[0001] The present disclosure relates to a power generation module used for building integrated photovoltaics (BIPV) and a building material window equipped with the same.

Background Art

[0002] Building integrated photovoltaics (BIPV) that uses a power generation module as a building material window has been conventionally studied. When using a power generation module as a building material window, a so-called laminated glass structure provided with a filler may be adopted from the viewpoint of strengthening the structure. A laminated glass structure is shown in Patent Document 1.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the case of ordinary laminated glass, since the filler is spread to the end between the upper and lower glasses, when the glass is broken, the scattering of glass fragments can be suppressed. When using a substrate of a laminated glass structure including a solar cell, lead wires and sealing members are arranged at the ends, so there are cases where the filler cannot be filled up to the ends, and there is a possibility that a partial space is formed. In that case, there is a problem that the fragments of the substrate are likely to scatter in the partial space.

[0005] The present disclosure provides a power generation module with reduced scattering of fragments when the substrate is broken and a building material window equipped with the same.

Means for Solving the Problems

[0006] The power generation module of this disclosure comprises a first substrate and a second substrate facing each other; a sealing member disposed between the first substrate and the second substrate along the outer edges of the first substrate and the second substrate and sealing the internal space between the first substrate and the second substrate; a power generation element disposed inside the first substrate or the second substrate; a filler disposed between the first substrate and the second substrate and covering the power generation element; and a protective member disposed on the outer surface of at least one of the first substrate and the second substrate. The protective member is disposed at least from the outer edge of the filler to the outer edge of the first substrate or the second substrate.

[0007] The building window material of this disclosure includes the power generation module described above. [Effects of the Invention]

[0008] The present disclosure provides a power generation module that reduces the scattering of fragments when the substrate is damaged, and a building window equipped with the same. [Brief explanation of the drawing]

[0009] [Figure 1] Schematic front view of the power generation module of Embodiment 1 [Figure 2] Schematic cross-section of the power generation module along line VII-VII in Figure 1. [Figure 3] Schematic front view of the power generation element in the power generation module shown in Figure 1. [Figure 4] Figure 3: Enlarged front view of a portion of the power generation element. [Figure 5] Enlarged cross-sectional view along the VIA-VIA line in Figure 4. [Figure 6] Enlarged cross-sectional view along the VIB-VIB line in Figure 4. [Figure 7] Enlarged cross-sectional view of region Z1 in the power generation module in Figure 2. [Figure 8] Enlarged cross-sectional view of region Z2 in the power generation module shown in Figure 2. [Figure 9] Figure 2 shows a vertical cross-sectional view of the power generation module as seen from direction A. [Figure 10] Vertical cross-sectional view of the power generation module of Embodiment 2 corresponding to Figure 9. [Figure 11] Schematic cross-sectional view of a modified power generation module corresponding to FIG. 2

Mode for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the following description, terms indicating a specific direction or position (terms including, for example, “upper”, “lower”, “right”, and “left”) are used as necessary. However, the use of these terms is for facilitating the understanding of the present disclosure with reference to the drawings, and the technical scope of the present disclosure or the usage mode of the power generation module according to the present disclosure is not limited by the meanings of these terms. Further, the following description is merely exemplary in nature and is not intended to limit the present disclosure, its applications, or its uses. Furthermore, the drawings are schematic, and the ratios of each dimension etc. do not necessarily match the actual ones.

[0011] In this specification, “electrically connected” means that at least one of the following is satisfied: current can flow between a plurality of components, a plurality of components are capacitively coupled, and a plurality of components are electromagnetically coupled.

[0012] (Embodiment 1) ​​​​​​​​​​​​​​The power generation module 10 can be used as a building material for a window or a veranda arranged in a building such that external light is incident from the side of the first substrate 11.

[0016] The Z direction (also referred to as the "first direction") shown in FIGS. 1 to 3 corresponds to the thickness direction of the power generation module 10. The thickness direction of the power generation module 10 is, for example, the stacking direction of the two substrates 11 and 12, or the stacking direction of the solar cell layers included in the power generation module 10. Also, in the plane orthogonal to the Z direction, the directions intersecting (here, orthogonal) with each other are defined as the X direction and the Y direction. The Y direction is, for example, the height direction of the window, and the X direction may be, for example, the width direction of the window.

[0017] The first substrate 11 and the second substrate 12 have light transmittance. "Light transmittance" means transmittance for visible light. The first substrate 11 and the second substrate 12 are, for example, rectangular glass substrates (tempered glass substrates) for building materials, and have a thickness of, for example, 2 mm or more. As shown in FIG. 1, in the top view of the power generation module 10 or a part thereof, for clarity, the illustration of the second substrate 12 may be omitted.

[0018] As shown in FIG. 2, the first substrate 11 and the second substrate 12 are arranged to face each other in the Z direction. The first substrate 11 on the light-receiving side has the same thickness as the second substrate 12, but may be thinner than the second substrate 为了提高透光性,也可以比第二基板12厚以提高强度。第一基板11的周缘部和第二基板12的周缘部由密封构件50密封。在从Z方向看的平面视图中,密封构件50位于比布置发电元件100的区域更向外的位置。作为密封构件50,可以使用例如丁基橡胶等热塑性弹性体来抑制水蒸气侵入。为了防止氧气侵入,可以通过并用乙烯-乙烯醇共聚物树脂(EVOH)来进一步提高密封性能。

[0019] The power generation element 100 is a solar cell module having a solar cell (power generation unit). The power generation element 100 is located between the first substrate 11 and the second substrate 12. In the example shown in Figure 1, the power generation element 100 is arranged in the space enclosed by the first substrate 11, the second substrate 12, and the sealing member 50.

[0020] As shown in Figure 2, the filler material 32 is located between the second substrate 12 and the first substrate 11, and between the second substrate 12 and the upper surface of the power generation element 100. For example, polyvinyl butyral (PVB), ethylene vinyl acetate copolymer (EVA), and polyolefin (PO) can be used as filler material 32. The filler material 32 helps to suppress the influence of air on the solar cell layer within the power generation element 100.

[0021] The filler material 32 is formed by placing the filler material on the power generation element 100 and the first substrate 11, then sealing it with the second substrate 12 and the sealing member 50, and finally pressing and melting it to fill the internal space. Therefore, the filler material 32 is adhered to the first substrate 11 and the power generation element 100. Ideally, the filler material 32 should fill the space surrounded by the first substrate 11, the second substrate 12 and the sealing member 50, but during the manufacturing process, if the lead wires 21 and 22 have an effect near the sealing member 50, or if the filler material 32 does not stretch sufficiently during pressurized melting, a space Ar may be generated. Even if a space Ar is not generated, if the adhesive strength of the sealing member 50 is weaker than that of the filler material 32, sufficient substrate holding force by the sealing member 50 may not be obtained.

[0022] As shown in Figure 1, the power generation module 10 includes a pair of lead wires 21 and 22. The lead wires 21 and 22 are, for example, metal wiring (e.g., tab wires). The lead wires 21 and 22 are electrically connected to the power generation element 100 within a space enclosed by the first substrate 11, the second substrate 12, and the sealing member 50. The lead wires 21 and 22 are drawn out from this space through the sealing member 50 to the outside.

[0023] As shown in Figure 1, the power generation module 10 includes a first wiring 41a and a second wiring 42a extending in the Y-axis direction between the first substrate 11 and the second substrate 12. Lead wire 21 includes the first wiring 41a, and lead wire 22 includes the second wiring 42a. These wirings may be metal wirings. In this embodiment, these wirings are copper wires covered with solder (tab wires). The first wiring 41a is provided on one end of the power generation element 100 in the X direction. The second wiring (e.g., tab wire) 42c is provided on the other end of the power generation element 100 in the X direction.

[0024] [2. Structure of the power generation element 100] The structure of the power generation element 100 in the power generation module 10 will be explained with reference to Figures 3 to 6. Figure 3 is a schematic top view of the power generation element 100 in the power generation module 10. Figure 4 is an enlarged top view of a part of the power generation element 100 in Figure 3. Figure 4 shows an enlarged view of the region 100a shown in Figure 3. Figure 5 is an enlarged cross-sectional view along the VIA-VIA line in Figure 4. Figure 6 is an enlarged cross-sectional view along the VIB-VIB line in Figure 4.

[0025] As shown in Figure 3, the power generation element 100 comprises a power generation unit supported by the first substrate 11, a portion of the first wiring 41a, and a portion of the second wiring 42a, all located on a light-transmitting first substrate 11. In the example shown in Figure 3, the power generation unit includes a plurality of linear strings 120. The power generation unit is located on a portion of the main surface 11s (inner surface) of the first substrate 11.

[0026] The power generation unit includes at least a solar cell layer. As will be described later, the power generation unit has a laminated structure that includes, for example, a pair of transparent electrodes and a solar cell layer located between the pair of transparent electrodes. The laminated structure only needs to be supported by the main surface 11s of the first substrate 11 and does not need to be in direct contact with it.

[0027] The first wiring 41a is located on one end of the first substrate 11. The second wiring 42a is located on the other end of the first substrate 11. Wires 41a and 42a are electrically connected to the power generation section.

[0028] Multiple power generation strings 120 are connected in parallel by wirings 41a and 42a. Here, each string 120 extends along the X direction from one end to the other of the first substrate 11. One end of each string 120 is connected to wiring 41a, and the other end is connected to wiring 42a.

[0029] Multiple strings 120 are arranged on the main surface 11s of the first substrate 11, spaced apart from each other in the Y direction. In a plan view from the Z direction, the multiple strings 120 may, for example, extend parallel to each other. In a plan view from the Z direction, the region 130 located between adjacent strings 120 on the main surface 11s of the first substrate 11 is called the "inter-string region".

[0030] As shown in Figures 4 and 5, each of the multiple strings 120 is a solar cell element string having multiple solar cell elements 150 connected in series.

[0031] As shown in Figures 5 and 6, each string 120 has a laminated structure L in which multiple layers, including a lower transparent conductive layer LE, a solar cell layer PV, and an upper transparent conductive layer UE, are stacked in the Z direction. These layers are supported on a main surface 11s. In the laminated structure L, the solar cell layer PV is located between the lower transparent conductive layer LE and the upper transparent conductive layer UE. The lower transparent conductive layer LE is located on the first substrate 11 side of the solar cell layer PV. The solar cell layer PV is a thin film type, for example, a laminated film including an n-type semiconductor layer, an i-type semiconductor layer, and a p-type semiconductor layer from the first substrate 11 side. The solar cell layer PV may further include an electron transport layer and / or a hole transport layer, as needed.

[0032] The lower transparent conductive layer LE, the solar cell layer PV, and the upper transparent conductive layer UE are separated for each solar cell element 150. In this example, the solar cell layer PV and the upper transparent conductive layer UE are separated for each solar cell element 150 by a separation groove 160. The lower transparent conductive layer LE includes the lower transparent electrode 151 of each solar cell element 150. The upper transparent conductive layer UE includes the upper transparent electrode 155 of each solar cell element 150. The solar cell layer PV includes the semiconductor layer 153 of each solar cell element 150.

[0033] Each solar cell element 150 has a lower transparent electrode 151, an upper transparent electrode 155, and a semiconductor layer 153 located between the lower transparent electrode 151 and the upper transparent electrode 155. The lower transparent electrode 151 (or upper transparent electrode 155) of the solar cell element 150 located at one end of each string 120 is electrically connected to the wiring 141. Similarly, the upper transparent electrode 155 (or lower transparent electrode 151) of the solar cell element 150 located at the other end of each string 120 is electrically connected to the wiring 142.

[0034] The solar cell layer PV (i.e., semiconductor layer 153) is a layer that converts absorbed light into photoelectric energy (photoelectric conversion layer). The solar cell layer PV contains, for example, a perovskite compound (peribskite semiconductor) as the photoelectric conversion material. The perovskite compound is a perovskite crystal structure represented by the chemical formula ABX3 and structures having similar crystals. A is a monovalent cation, B is a divalent cation, and X is a halogen anion. The lower transparent conductive layer LE and the upper transparent conductive layer UE are light-transmitting metal oxide layers such as indium tin oxide (ITO) or indium zinc oxide (IZO), or a fluorine-doped tin oxide (FTO) layer. Note that the materials of each layer constituting the solar cell element are not limited to those described above, and known materials may be used.

[0035] Next, the lead wires 21 and 22 of the power generation module 10 will be further described with reference to Figures 7 and 8. Figure 7 is an enlarged cross-sectional view of region Z1 in the power generation module 10 of Figure 2. Figure 8 is an enlarged cross-sectional view of region Z2 in the power generation module 10 of Figure 2.

[0036] The lower transparent electrode 151 has a first extended portion 161 and a second extended portion 162 that protrude in the X direction from the semiconductor layer 153 in a plan view. The first extended portion 161 is the region in which the lower transparent electrode 151 protrudes in the -X direction relative to the semiconductor layer 153. The second extended portion 162 is the region in which the lower transparent electrode 151 protrudes in the +X direction relative to the semiconductor layer 153. In this embodiment, each extended portion 161, 162 has a band shape that extends along the Y direction in a plan view.

[0037] The first extension 161 becomes the positive electrode of the power generation module 10. The second extension 162 becomes the negative electrode of the power generation module 10.

[0038] In this embodiment, the lead wire 21 for taking out the positive electrode is connected to the first expansion section 161 over substantially the entire length of each first expansion section 161 in the Y direction. Similarly, the lead wire 22 for taking out the negative electrode is connected to the second expansion section 162 over substantially the entire length of each second expansion section 162 in the Y direction.

[0039] Refer to Figure 9. Figure 9 is a longitudinal cross-sectional view taken from direction A in Figure 2.

[0040] The lead wires 21 and 22 are conductive. In this embodiment, the lead wires 21 and 22 each consist of a copper wire and a solder layer covering the copper wire. The solder layer suppresses the occurrence of rust on the copper wire. Furthermore, when the lead wires 21 and 22 are soldered to other components, the solder layer functions as a pre-solder layer.

[0041] As shown in Figure 9, the sealing member 50 has a through hole 51 that communicates from the internal space of the power generation module 10 to the outside, and the lead wires 21 and 22 pass through the sealing member 50 from within the area enclosed by the sealing member 50 to the outside of the sealing member 50. The lead wires 21 and 22 that extend to the outside of the sealing member 50 are connected, for example, to terminal boxes provided on the positive and negative sides, respectively.

[0042] [3. Protective material] Next, the first protective member 34 and the second protective member 35 will be described in detail with reference to Figures 1, 2, and 9.

[0043] In building-integrated solar cells, unlike conventional laminated glass structures, the power generation elements 100 and lead wires 21 and 22 are installed within the laminated substrate. As a result, the entire power generation module 10 may not have uniform strength, and there is a risk of unexpected damage to the substrates 11 and 12 due to load concentration in certain areas.

[0044] Furthermore, when a laminated glass structure is formed, variations in the thickness of the filler material 32 may occur within the plane, or the filler material 32 may not be sufficiently filled in areas near the edges, such as near the sealing member 50, in order to accommodate the filler material 32 within the first substrate 11 and the second substrate 12.

[0045] Thus, due to manufacturing issues, it may not be possible to fill the edges with filler material 32, potentially creating a gap Ar between the substrates 11 and 12. To solve this problem, the first protective member 34 is positioned along the outer peripheral edge of the first substrate 11, and the second protective member 35 is positioned along the outer peripheral edge of the second substrate 12.

[0046] The first protective member 34 is positioned on the outer surface along the outer circumference of the first substrate 11 to improve the strength of the first substrate 11. Therefore, the first protective member 34 is positioned along each of the four sides of the first substrate 11, extending inward from the outer edge. Similarly, the second protective member 35 is positioned on the outer surface along the outer circumference of the second substrate 12 to improve the strength of the second substrate 12. Similarly, the second protective member 35 is positioned along each of the four sides of the second substrate 12, extending inward from the outer edge. Note that, as shown in Figure 11, the first protective member 34 may be positioned over the entire outer surface of the first substrate 11, and the second protective member 35 may be positioned over the entire outer surface of the second substrate 12.

[0047] The first protective member 34 and the second protective member 35 are, for example, sheet-shaped resin films, such as PET films. When light is incident on the first substrate 11 and the first protective member 34 is placed over the entire outer surface of the first substrate 11 (see Figure 11), if the first protective member 34 is transparent, it is possible to suppress the reduction in the amount of light incident on the solar cell element 150. As shown in Figures 1, 7, and 8, if the first protective member 34 does not overlap the solar cell element 150, it does not have to be transparent. Also, if the first protective member 34 does not overlap the solar cell element 150, the light is not reflected by the first protective member 34 before it enters the solar cell element 150, so compared to the case where it is placed over the entire surface, it is possible to suppress the reduction in the amount of light incident on the solar cell element 150.

[0048] The first protective member 34 is positioned at least from the outer edge E1 of the power generation element 100 to the outer edge of the first substrate 11, and partially overlaps with the filler 32. The second protective member 35 is positioned at least from the outer edge E1 of the power generation element 100 to the outer edge of the second substrate 12, and partially overlaps with the filler 32. As a result, the first protective member 34 is positioned on the region of the first substrate 11 that is in contact with the space Ar formed between the filler 32 and the sealing member 50, thereby reliably reinforcing the region of the first substrate 11 where the strength has decreased. Similarly, the second protective member 35 is positioned on the region of the second substrate 12 that is in contact with the space Ar formed between the filler 32 and the sealing member 50, thereby reliably reinforcing the region of the second substrate 12 where the strength has decreased.

[0049] [4. Effects, etc.] Thus, the power generation module 10 comprises a first substrate 11 and a second substrate 12 facing each other, a sealing member 50 positioned between the first substrate 11 and the second substrate 12 along the outer edges of the first substrate 11 and the second substrate 12 and sealing the internal space between the first substrate 11 and the second substrate 12, a power generation element 100 positioned inside the first substrate 11 or the second substrate 12, a filler material 32 positioned between the first substrate 11 and the second substrate 12 and covering the power generation element 100, and a first protective member 34 or a second protective member 35 positioned on the outer surface of at least one of the first substrate 11 and the second substrate 12. The first protective member 34 or the second protective member 35 is positioned at least from the outer edge of the filler material 32 to the outer edge of the first substrate 11 or the second substrate 12.

[0050] At least one of the first protective member 34 and the second protective member 35 is placed on the outer surface of at least one of the first substrate 11 and the second substrate 12. By reinforcing at least a portion of the surfaces of the first substrate 11 and the second substrate 12 with the protective member, damage to the reinforced substrate and the scattering of substrate fragments in the event of substrate damage can also be suppressed.

[0051] Furthermore, the power generation element 100 is arranged on the first substrate 11, and the first protective member 34 is arranged on the outer surface of the first substrate 11. The filler material 32 is arranged beyond the outer edge E1 of the power generation element 100, and the first protective member 34 is arranged at least from the outer edge E1 of the power generation element 100 to the outer edge of the first substrate 11, partially overlapping with the filler material 32.

[0052] Since the first protective member 34 is positioned on the outer surface of the first substrate 11 on which the power generation element 100 is located, even if damage occurs to the first substrate 11 on the side into which light is incident, the first protective member 34 is positioned on the outside, which can suppress the scattering of damaged fragments outwards.

[0053] In the above-described embodiment 1, the first protective member 34 was placed on the outer surface of the first substrate 11 and the second protective member 35 was placed on the outer surface of the second substrate 12, but the embodiment is not limited to this. The first protective member 34 may be placed only on the outer surface of the first substrate 11, or the second protective member 35 may be placed only on the outer surface of the second substrate 12. If a protective member is placed on only one of the first substrate 11 and the second substrate 12, the protective member may be provided on the outer surface of the substrate on the side from which light is incident.

[0054] Furthermore, the first protective member 34 may be placed not only on the outer surface of the first substrate 11 but also at the Y-axis end. Similarly, the second protective member 35 may be placed not only on the outer surface of the second substrate 12 but also at the Y-axis end. This increases the strength of the ends of the first substrate 11 and the second substrate 12, and prevents fragments from scattering even if the ends of the first substrate 11 and the second substrate 12 are damaged.

[0055] (Embodiment 2) Next, with reference to Figure 10, the power generation module 10A and the building material window 1A of Embodiment 2 will be described. Figure 10 is a longitudinal cross-sectional view of the power generation module 10A and the building material window 1A according to Embodiment 2, which corresponds to Figure 9. In Embodiment 2, the same reference numerals are used for components common to Embodiment 1, and the differences will be described below.

[0056] In Embodiment 1, the protective members 34 and 35 were, for example, resin films, but in Embodiment 2, the protective member 34A is, for example, a frame member such as a sash. Since the protective member 34A is arranged to cover the outer circumference and edges of the outer surfaces of the first substrate 11 and the second substrate 12, the strength of the first substrate 11 and the second substrate 12 is increased, and even if they are damaged near space Ar, fragments will not scatter. The lead wires 21 and 23 may be taken out to the outside through through holes provided in the protective member 34A as shown in the figure, or a terminal box may be placed inside the protective member 34A and connected to the terminal box.

[0057] Furthermore, by using a building window 1A equipped with such a power generation module 10A, the strength of the building window 1A can be increased, thereby increasing its safety.

[0058] (Other embodiments) As described above, the above embodiments have been explained as examples of the technology disclosed in this application. However, the technology in this disclosure is not limited to these embodiments and can be applied to embodiments that have been modified, replaced, added, or omitted as appropriate. Therefore, other embodiments will be described below as examples.

[0059] (Summary of the embodiment) (1) The power generation module of the present disclosure comprises a first substrate and a second substrate facing each other, a sealing member disposed between the first substrate and the second substrate along the outer edges of the first substrate and the second substrate and sealing the internal space between the first substrate and the second substrate, a power generation element disposed inside the first substrate or the second substrate, a filler disposed between the first substrate and the second substrate and covering the power generation element, and a protective member disposed on the outer surface of at least one of the first substrate and the second substrate. The protective member is disposed at least from the outer edge of the filler to the outer edge of the first substrate or the second substrate.

[0060] (2) In the power generation module of (1), the power generation element is arranged on the first substrate, and the protective member is arranged on the outer surface of the first substrate.

[0061] (3) In the power generation module of (2), the filler material is arranged to extend beyond the outer edge of the power generation element, and the protective member is arranged from the outer edge of the power generation element to the outer edge of the first substrate, partially overlapping with the filler material.

[0062] (4) In any of the power generation modules described in (1) to (3), the protective member covers the end faces of the first substrate and the second substrate.

[0063] (5) In any of the power generation modules described in (1) to (4), the protective member is in the form of a sheet.

[0064] (6) In any of the power generation modules described in (1) to (4), the protective member is a window frame.

[0065] (7) In any of the power generation modules described in (1) to (6), the first substrate and the second substrate are made of glass intended for building materials.

[0066] (8) A building window equipped with one of the power generation modules from (1) to (7). [Industrial applicability]

[0067] This disclosure is useful for power generation modules used in building-integrated photovoltaic power generation. [Explanation of symbols]

[0068] 1. 1A Building material window 10, 10A power generation module 11. First circuit board 12 Second board 13 Central area 21, 22 Lead wires 24 Conductive members 32 Filling material 34 First protective member 35 Second protective member 41a First wiring 42a Second wiring 50 Sealing member 51 Through hole 100 power generation element 120 strings 150 solar cell elements 151 Lower transparent electrode 153 Semiconductor layer 155 Upper transparent electrode 160 Separation groove 161 First Expansion Section 162 Second Expansion Section Ar space E1 Outer edge of the power generation element E2 Outer edge of the filler

Claims

1. A first substrate and a second substrate facing each other, A sealing member is provided between the first substrate and the second substrate, positioned along the outer edges of the first substrate and the second substrate, to seal the internal space between the first substrate and the second substrate. A power generation element disposed inside the first substrate or the second substrate, Displaced between the first substrate and the second substrate, and a filler material covering the power generation element, The system comprises a protective member disposed on the outer surface of at least one of the first substrate and the second substrate, The protective member is positioned at least from the outer edge of the filler material to the outer edge of the first substrate or the second substrate. Power generation module.

2. The power generation element is arranged on the first substrate, The protective member is disposed on the outer surface of the first substrate. The power generation module according to claim 1.

3. The filler material is positioned outward beyond the outer edge of the power generation element. The protective member is positioned at least from the outer edge of the power generation element to the outer edge of the first substrate, and partially overlaps with the filler material. The power generation module according to claim 2.

4. The protective member covers the end faces of the first substrate and the second substrate. The power generation module according to claim 1.

5. The protective member is in the form of a sheet. The power generation module according to claim 1.

6. The protective member is a window frame. The power generation module according to claim 1.

7. The first substrate and the second substrate are glass for building materials. The power generation module according to claim 1.

8. A power generation module according to claim 1, Building material windows.

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