Solar cell and installation method

Abstract

To provide a solar cell which can be replaced easily.SOLUTION: A solar battery includes a power generation body 10 including a photoelectric conversion region in which a power generation portion 11A is disposed, a first fixing portion provided on one side of the power generation body 10, and a second fixing portion provided on the other side opposite to the one side of the power generation body 10, wherein at least one of the first fixing portion and the second fixing portion is a zipper portion (for example, a first zipper portion 20 or a second zipper portion 30). For example, the solar battery is a perovskite solar battery 100 in which a power generation body 10 includes a photoelectric conversion region 11 in which a power generation part 11A3 having a perovskite layer 11A is arranged.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to solar cells and installation methods. [Background technology]

[0002] Patent Document 1 discloses a configuration in which a film- or sheet-shaped perovskite solar cell is mounted on an existing solar cell module, with the aim of providing a solar power generation device that can utilize the existing solar cell structure as is without discarding it.

[0003] Furthermore, Patent Document 2 discloses an installation method using hook-and-loop fasteners as a structure that can be easily installed and more reliably and firmly attached, taking into consideration that the roofs and exterior materials of buildings are not necessarily flat and that solar cell units with highly rigid reinforcing plates have poor adaptability to installation locations. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-117617 [Patent Document 2] Japanese Patent Application Laid-Open No. 2011-249420 Summary of the Invention [Problem to be solved by the invention]

[0005] By the way, solar cells have a lifespan, although the period varies. For example, the current lifespan of perovskite solar cells is said to be around 10 years.

[0006] On the other hand, the lifespan of buildings and other structures is also getting longer every year, and the lifespan of buildings and other structures in which solar cells are installed is much longer than the lifespan of the solar cells themselves, so it can be said that solar cells will need to be replaced regularly many times during the life of the building and other structures.

[0007] Therefore, there is a need for easily replaceable solar cells and installation methods thereof.

[0008] The present disclosure has been made in view of the above circumstances, and aims to provide a solar cell that can be easily replaced and an installation method thereof. [Means for solving the problem]

[0009] The solar cell of the present disclosure comprises: a power generation main body including a photoelectric conversion region in which a power generation unit is disposed; a first fixing portion provided on one side of the power generation main body; a second fixing portion provided on the other side of the power generation main body opposite to the one side, At least one of the first fixing portion and the second fixing portion is a wire fastener portion. [Effects of the Invention]

[0010] According to the present disclosure, an easily replaceable solar cell and an installation method therefor are provided. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram showing a state in which a perovskite solar cell according to a first embodiment of the present disclosure is installed at an installation location. [Figure 2] 2 is a cross-sectional view of the power generation main body taken along line AA in FIG. 1. [Figure 3] This is a diagram showing the state of the power generation main body when the first element portion of the first line fastener portion and the second element portion of the second line fastener portion of the first embodiment of the present disclosure are disengaged and the power generation main body is removed. [Figure 4] This is a diagram showing the state of the first mounting portion and the second mounting portion when the first element portion of the first line fastener portion and the second element portion of the second line fastener portion of the first embodiment of the present disclosure are disengaged and the power generation main body portion is removed. [Figure 5]FIG. 10 is a diagram showing a state in which a perovskite solar cell according to a second embodiment of the present disclosure is installed at an installation location. [Figure 6] FIG. 10 is a perspective view for explaining the installation location of a perovskite solar cell according to a third embodiment of the present disclosure. [Figure 7] FIG. 10 is a cross-sectional view showing a state in which a perovskite solar cell according to a third embodiment of the present disclosure is installed. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, modes for carrying out the invention (hereinafter referred to as "embodiments") will be described in detail with reference to the accompanying drawings. It should be noted that the same elements are denoted by the same numbers or symbols throughout the description of the embodiments.

[0013] However, not all numbers or symbols are assigned to all drawings, and in consideration of ease of viewing the drawings, numbers or symbols may be omitted in some drawings.

[0014] <<First Embodiment>> A solar cell and a method for installing the solar cell according to a first embodiment of the present disclosure will be described with reference to FIGS. 1 to 4. FIG.

[0015] In this embodiment, a case will be described in which the solar cell is a perovskite solar cell 100 as a suitable example, but the type of solar cell may be a solar cell other than the perovskite solar cell 100.

[0016] FIG. 1 is a diagram showing a state in which a perovskite solar cell 100 according to a first embodiment of the present disclosure is installed at an installation location. FIG. 1 is a front view of the light-receiving surface side of the perovskite solar cell 100.

[0017] FIG. 2 is a cross-sectional view of the power generation main body 10 taken along line AA in FIG. In FIG. 2, the upper side is the front side where the light-receiving surface of the perovskite solar cell 100 is located, and the lower side is the back side located opposite the light-receiving surface.

[0018] In the following description of each part, when the light-receiving surface side of the perovskite solar cell 100 is viewed from the front, the left side in the horizontal direction will be referred to as one side, and the right side will be referred to as the other side.

[0019] Furthermore, the upper portion in the vertical direction will be described as one end side, and the lower portion as the other end side, but the one end side and the other end side may be reversed, and the direction does not have to be completely vertical. For example, the perovskite solar cell 100 may be placed at an angle to ensure that sunlight hits the light-receiving surface well, so it does not have to be perfectly vertical.

[0020] In the embodiments, the expressions "one side," "other side," "one end side," and "other end side" merely indicate relative positional relationships, and therefore, there are also the following cases. The expressions "one side" and "the other side" may be used in relation to the vertical direction, in which case the upper or lower part in the vertical direction may be referred to as "one side," and conversely, the lower or upper part may be referred to as "the other side." In this way, the opposite side of either one side or the other side can be considered as the other side or one side.

[0021] Furthermore, when the expressions "one side" and "the other side" are used in the vertical direction, when looking at the light-receiving surface side of the perovskite solar cell 100 from the front, either the left or right side in the horizontal direction is one end side, and the remaining side is the other end side.

[0022] As shown in Figure 1, the perovskite solar cell 100 comprises a power generation main body 10 having a photoelectric conversion region 11 in which a power generation section 11A (see Figure 2) is arranged, a first wire fastener section 20 as a first fixing section provided on one side of the power generation main body 10, and a second wire fastener section 30 as a second fixing section provided on the other side opposite to the one side of the power generation main body 10.

[0023] In this embodiment, the solar cell is a perovskite solar cell 100, and therefore the power generation main body 10 has a photoelectric conversion region 11 in which a power generation section 11A (see Figure 2) having a perovskite layer 11A3 (see Figure 2) is arranged.

[0024] However, for example, if the solar cell is silicon-based, the power generation main body 10 will have a photoelectric conversion region 11 in which a power generation section 11A having a silicon layer is arranged. Furthermore, if the solar cell is an organic semiconductor type, the power generation main body 10 will have a photoelectric conversion region 11 in which a power generation section 11A having an organic layer is arranged.

[0025] [Power generation main body 10] As shown in Figure 1, the power generation main body 10 includes a photoelectric conversion region 11 in which a power generation section 11A (see Figure 2) having a perovskite layer 11A3 (see Figure 2) is arranged, a sealing section 12 that extends outside the photoelectric conversion region 11 and seals the power generation section 11A, and an electrical wiring connection section 13 that is provided on the sealing section 12 outside the photoelectric conversion region 11.

[0026] An electric cable CB is connected to the electric wiring connection part 13 for conducting the electric power generated by the perovskite solar cell 100 to, for example, a power conditioner or a charge controller. In the drawing, the wiring path of the electric cable CB is shown schematically by a dotted line, but in reality, two or more electric cables CB are connected to the electric wiring connection portion 13.

[0027] In addition, in this embodiment, the electric cable CB is made removable at the electric wiring connection portion 13, but this is not a limitation. For example, a lead wire for connection to the electric cable CB may be led out from the electric wiring connection portion 13, and the lead wire and the electric cable CB may be detachably connected.

[0028] (Photoelectric conversion area 11) As shown in FIG. 2, the photoelectric conversion region 11 is a region where a power generating section 11A having a perovskite layer 11A3 is disposed, thereby converting light into electricity.

[0029] In this embodiment, one power generation section 11A is arranged in the photoelectric conversion region 11, but there is no limit to the number of power generation sections 11A that can be arranged, and the number of power generation sections 11A to be arranged can be determined according to the size of the photoelectric conversion region 11 required for the perovskite solar cell 100.

[0030] "Power Generation Unit 11A" The power generation unit 11A includes a first electrode 11A1 (anode) provided on the back surface opposite the light-receiving surface, an electron transport layer 11A2 provided on the first electrode 11A1, a perovskite layer 11A3 serving as a photoelectric conversion layer provided on the electron transport layer 11A2, a hole transport layer 11A4 provided on the perovskite layer 11A3, a translucent second electrode 11A5 (cathode) provided on the hole transport layer 11A4, and a translucent base material 11A6 provided on the second electrode 11A5.

[0031] (1) First electrode 11A1: The first electrode 11A1 is an electrode for extracting electrons generated in the perovskite layer 11A3, and is connected to a wiring (not shown) for extracting a current. For example, the first electrode 11A1 can be made of an opaque metal material that functions as a general electrode, but a transparent electrode material may also be used.

[0032] (2) Electron transport layer 11A2: The electron transport layer 11A2 is a layer that allows electrons generated in the perovskite layer 11A3 to move to the first electrode 11A1, while preventing holes generated in the perovskite layer 11A3 from moving to the first electrode 11A1, and contains, for example, a halogen compound or a metal oxide.

[0033] (3) Perovskite layer 11A3: The perovskite layer 11A3 is a layer that absorbs light and performs photoelectric conversion, and contains a perovskite compound.

[0034] (4) Hole transport layer 11A4: The hole transport layer 11A4 is a layer that allows holes generated in the perovskite layer 11A3 to move to the second electrode 11A5, while preventing electrons generated in the perovskite layer 11A3 from moving to the second electrode 11A5, and can be made of, for example, a metal oxide.

[0035] (5) Second electrode 11A5: The second electrode 11A5 is an electrode that functions as a cathode, and is connected to a wiring (not shown). Second electrode 11A5 is made of a transparent electrode material such as indium tin oxide (ITO) or fluorine-doped tin oxide (FTO) in order to allow light from the light-receiving surface to pass through to perovskite layer 11A3.

[0036] (6) Base material 11A6: The substrate 11A6 is a starting material for forming the second electrode 11A5, the hole transport layer 11A4, the perovskite layer 11A3, the electron transport layer 11A2, and the first electrode 11A1, and is made of a translucent material to allow light from the light-receiving surface to pass through to the perovskite layer 11A3. For example, quartz glass, polyethylene terephthalate, etc. can be suitably used.

[0037] (Sealing portion 12) The sealing portion 12 comprises a back sheet 12A provided on the back surface opposite the light-receiving surface at a distance from the first electrode 11A1, a translucent barrier sheet 12B provided on the light-receiving surface side at a distance from the substrate 11A6, a translucent sealant 12C filled between the back sheet 12A and the barrier sheet 12B and the power generation portion 11A, and an outer edge material 12D provided along the entire outer edge so as to seal the gap at the outer peripheral edges of the back sheet 12A and the barrier sheet 12B. The above-described configuration of the sealing section 12 is merely an example, and the configuration is not limited to this, and it is sufficient if the configuration can appropriately protect the power generation section 11A from, for example, moisture.

[0038] [First wire fastener portion 20] The first line fastener portion 20 has the structure of a typical line fastener, and as shown in Figure 1, comprises a pair of first tape portions 21, a first element portion 22 (engagement teeth) that integrates the pair of first tape portions 21 by interlocking, and a first slider portion 23 that engages and disengages the first element portion 22.

[0039] The other of the pair of first tape portions 21 is attached to one side of the photoelectric conversion region 11 . More specifically, the first tape portion 21 on the other side is provided so as to be fixed to one side edge of the sealing portion 12 outside the photoelectric conversion region 11 .

[0040] On the other hand, one of the pair of first tape portions 21 is attached to one side of the installation location.

[0041] In this embodiment, a first mounting portion 40A for fixing the first tape portion 21 is provided on one side of the installation location, and by fixing the first tape portion 21 on one side to the first mounting portion 40A, the first tape portion 21 on one side is attached to one side of the installation location.

[0042] [Second wire fastener portion 30] Like the first line fastener section 20, the second line fastener section 30 also has the structure of a typical line fastener, and as shown in Figure 1, it comprises a pair of second tape sections 31, a second element section 32 (engagement teeth) that integrates the pair of second tape sections 31 by interlocking, and a second slider section 33 that engages and disengages the second element section 32.

[0043] One of the pair of second tape portions 31 is attached to the other side of the photoelectric conversion region 11 . More specifically, the second tape portion 31 on one side is provided so as to be fixed to the other side of the sealing portion 12 outside the photoelectric conversion region 11 .

[0044] On the other hand, the other second tape portion 31 of the pair of second tape portions 31 is attached to the other side of the installation location.

[0045] In this embodiment, a second mounting portion 40B is provided on the other side of the installation location for fixing the second tape portion 31, and by fixing the second tape portion 31 on the other side to the second mounting portion 40B, the second tape portion 31 on the other side is attached to the other side of the installation location.

[0046] The first mounting portion 40A and the second mounting portion 40B may be, for example, a frame or the like manufactured to suit the installation location, or may be a structural part of an existing building or the like.

[0047] Furthermore, the specific method for fixing the first tape portion 21 on one side and the second tape portion 31 on the other side to the first mounting portion 40A and the second mounting portion 40B may also be a general fixing method.

[0048] For example, any fastening method that can securely fasten the components may be used, such as riveting, screw fastening, or Insulock (registered trademark).

[0049] Figure 3 is a diagram showing the state of the power generation main body 10 when the first element portion 22 of the first line fastener portion 20 and the second element portion 32 of the second line fastener portion 30 of the first embodiment of the present disclosure are disengaged and the power generation main body 10 is removed. 3 is a front view of the light-receiving surface side of the perovskite solar cell 100, similar to FIG.

[0050] Figure 4 is a diagram showing the state of the first mounting portion 40A and the second mounting portion 40B when the first element portion 22 of the first line fastener portion 20 and the second element portion 32 of the second line fastener portion 30 of the first embodiment of the present disclosure are disengaged and the power generation main body portion 10 is removed. FIG. 4 corresponds to FIG. 3.

[0051] As shown in Figure 3, the first line fastener portion 20 includes an upper stop portion 24 provided at one end (upper side of the figure) of the length of the first tape portion 21 on the other side, as shown in Figure 4, an upper stop portion 24 provided at one end (upper side of the figure) of the length of the first tape portion 21 on one side, as shown in Figures 1 and 4, a lower stop portion 25 provided at the other end (lower side of the figure) of the length of the first tape portion 21 on one side, and as shown in Figure 3, a insert pin 26 provided at the other end (lower side of the figure) of the length of the first tape portion 21 on the other side, which is inserted into the lower stop portion 25 when the first element portion 22 is engaged. As shown in FIG. 4, the first slider portion 23 is provided on the first tape portion 21 side on which the bottom stop portion 25 is provided.

[0052] The upper stopper portion 24 and the lower stopper portion 25 are configured to prevent the first slider portion 23 from coming off.

[0053] The above structure may be reversed. In other words, the first line fastener portion 20 may be provided with an upper stop portion 24 provided at one end in the longitudinal direction of the first tape portion 21 on one side, an upper stop portion 24 provided at one end in the longitudinal direction of the first tape portion 21 on the other side, a lower stop portion 25 provided at the other end in the longitudinal direction of the first tape portion 21 on the other side, and a insert pin 26 provided at the other end in the longitudinal direction of the first tape portion 21 on one side and inserted into the lower stop portion 25 when the first element portion 22 is engaged. In this case, the first slider portion 23 may be provided on the side of the first tape portion 21 on the other side where the bottom stop portion 25 is provided.

[0054] Alternatively, the upper stoppers 24 may be provided on the other end side, and the lower stoppers 25 and insert pins 26 may be provided on one end side.

[0055] Similarly, the second line fastener portion 30 includes an upper stop portion 34 provided at one end (upper side of the figure) of the length of the second tape portion 31 on one side, as shown in Figure 3, an upper stop portion 34 provided at one end (upper side of the figure) of the length of the second tape portion 31 on the other side, as shown in Figure 4, a lower stop portion 35 provided at the other end (lower side of the figure) of the length of the second tape portion 31 on the other side, as shown in Figures 1 and 4, and a latch pin 36 provided at the other end (lower side of the figure) of the length of the second tape portion 31 on one side, as shown in Figure 3, and inserted into the lower stop portion 35 when the second element portion 32 is engaged. As shown in FIG. 4, the second slider portion 33 is provided on the second tape portion 31 side, on the other side where the bottom stop portion 35 is provided.

[0056] The upper stopper portion 34 and the lower stopper portion 35 can prevent the second slider portion 33 from coming off.

[0057] The above structure may be reversed. In other words, the second line fastener portion 30 may be provided with an upper stop portion 34 provided at one end of the length of the second tape portion 31 on the other side, an upper stop portion 34 provided at one end of the length of the second tape portion 31 on one side, a lower stop portion 35 provided at the other end of the length of the second tape portion 31 on one side, and a insert pin 36 provided at the other end of the length of the second tape portion 31 on the other side and inserted into the lower stop portion 35 when the second element portion 32 is engaged. In this case, the second slider portion 33 may be provided on the second tape portion 31 side on which the bottom stop portion 35 is provided.

[0058] Alternatively, the upper stopper portions 34 may be provided on the other end side, and the lower stopper portions 35 and insert pins 36 may be provided on one end side.

[0059] The installation method for the perovskite solar cell 100 includes a first installation step in which the first tape portion 21 on one side is attached so as to be fixed to the first attachment portion 40A on one side of the installation location, and a second installation step in which the second tape portion 31 on the other side is attached so as to be fixed to the second attachment portion 40B on the other side of the installation location. It should be noted that either the first mounting step or the second mounting step may be performed first.

[0060] Next, a first integration step is performed in which the first element portion 22 is engaged with the first slider portion 23 to integrate the pair of first tape portions 21, and a second integration step is performed in which the second element portion 32 is engaged with the second slider portion 33 to integrate the pair of second tape portions 31. It should be noted that either the first integration step or the second integration step may be carried out first.

[0061] Finally, a connection step is performed in which the electrical cable CB is connected to the electrical wiring connection portion 13, and the installation of the perovskite solar cell 100 is completed. It should be noted that the connecting step of connecting the electric cable CB to the electric wiring connecting portion 13 may be performed before the integration step.

[0062] In the first embodiment described above, when the power generation main body 10 is replaced periodically, removal of the power generation main body 10 can be done simply by manually operating the first slider portion 23 and the second slider portion 33, and installation of the power generation main body 10 can also be done easily by simply manually operating the first slider portion 23 and the second slider portion 33.

[0063] In particular, when replacing solar panels installed at a high position, temporary scaffolding is generally required, but as the panels can be easily removed and installed as described above, replacement work can be carried out using ladders and gondolas instead of setting up temporary scaffolding.

[0064] Moreover, since the perovskite solar cell 100 can be made extremely lightweight, there are no load-bearing problems even when fastening is performed using a structure such as the first wire fastener portion 20 and the second wire fastener portion 30.

[0065] In addition, by adopting a line fastener structure such as the first line fastener section 20 and the second line fastener section 30, the fastening can be more securely performed than with buttons or Velcro (registered trademark), and there is no need to worry about the fastening coming loose due to strong winds, etc.

[0066] In terms of fastening stability, it is preferable to use the first linear fastener portion 20 as the first fastening portion and the second linear fastener portion 30 as the second fastening portion.

[0067] However, for example, if at least one of the first fixing portion and the second fixing portion is a line fastener portion, even if the fixing portion that is not a line fastener portion (the first fixing portion or the second fixing portion) becomes unfastened, the line fastener portion will remain fixed.

[0068] Therefore, if at least one of the first fixing part and the second fixing part is a wire fastener part, it is possible to avoid a situation in which the fixation is completely released and the perovskite solar cell 100 is blown away by strong winds, etc., so it is sufficient for at least one of the first fixing part and the second fixing part to be a wire fastener part.

[0069] For example, even if at least one of the first fixing portion and the second fixing portion is a line fastener portion and the other is not a line fastener portion, it is preferable that the fixing manner of the non-line fastener portion be a fixing form that can be easily fixed and released.

[0070] For example, the fastening portion on the side that is not a wire fastener portion may be a hook-and-loop fastener portion using a hook-and-loop fastener. Specifically, there are various types of hook and loop fasteners, such as normal type, free type, and snap-in type, and any type of hook and loop fastener may be used for the hook and loop fastener portion.

[0071] In addition, a normal type hook and loop fastener has a hook structure on one side and a loop structure on the other side, and when one side and the other side are brought together, the hook structure and the loop structure interlock and engage with each other.

[0072] In addition, free-type hook-and-loop fasteners have loop and hook structures on both one side and the other side, and when one side is brought together with the other side, the hook and loop structures interlock and engage with each other.

[0073] Furthermore, a snap-in type hook-and-loop fastener has a protrusion structure with an enlarged tip on both one side and the other side, and when one side and the other side are brought together, the protrusions engage with each other.

[0074] The hook and loop fastener is also called Magic Tape (registered trademark) or Velcro (registered trademark).

[0075] In addition, the fixing portion on the side that is not the line fastener portion may be a fixing portion using, for example, an eye clip or a button, and the fixing structure of the fixing portion on the side that is not the line fastener portion may be one that can be fixed and released relatively easily.

[0076] In this way, when only either the first fixing portion or the second fixing portion is a line fastener portion, the tape portion on the other side or one side (the tape portion 21 on the other side of the first tape portion 21, or the tape portion 31 on one side of the second tape portion 31) is attached to one side or the other side of the photoelectric conversion region 11 (more specifically, to one side edge of the sealing portion 12, or the other side edge of the sealing portion 12).

[0077] Furthermore, even in this way, when only either the first fixing portion or the second fixing portion is a line fastener portion, the installation method includes an attachment step of attaching the tape portion on one side or the other side (the tape portion 21 on one side of the first tape portion 21, or the tape portion 31 on the other side of the second tape portion 31) to one side or the other side of the installation location (more specifically, the first attachment portion 40A on one side or the second attachment portion 40B on the other side), and an integration step of engaging the element portion (the first element portion 22 or the second element portion 32) with the slider portion (the first slider portion 23 or the second slider portion 33) to integrate the pair of tape portions (the first tape portion 21 or the second tape portion 31).

[0078] The line fastener portion is not limited to being completely straight, and may be curved depending on the shape of the perovskite solar cell 100 or the object to be fixed.

[0079] Furthermore, since the first fixing portion (first wire fastener portion 20) and the second fixing portion (second wire fastener portion 30) are arranged in opposing positions across the power generation main body portion 10, the power generation main body portion 10 can be held firmly in an expanded state, allowing light to hit the light-receiving surface of the perovskite solar cell 100 well.

[0080] In the above, a structure has been described that can be attached using the first fixing portion (first wire fastener portion 20) and the second fixing portion (second wire fastener portion 30). However, it goes without saying that the number of wire fastener portions can be increased by providing a third fixing portion (third wire fastener portion) on a side that does not face the first fixing portion (first wire fastener portion 20) and the second fixing portion (second wire fastener portion 30), for example, on the side of the sealing portion 12 on one end side (upper side of Figure 1) or the other end side (lower side of Figure 1) of the power generation main body portion 10. The third fastening portion may be a fastening portion having a structure other than a wire fastener, such as the hook and loop fastener portion described above.

[0081] Furthermore, in order to improve the efficiency of the perovskite solar cell 100, when improving the power generation unit 11A and conducting performance tests, it is conceivable that the power generation main body 10 will need to be replaced relatively frequently, and the configuration of the above embodiment is also suitable in such cases.

[0082] <<Second embodiment>> Next, a solar cell and a method for installing a solar cell according to a second embodiment of the present disclosure will be described with reference to FIG. As in the first embodiment, the present embodiment will be described as a suitable example in which the solar cell is a perovskite solar cell 100, but the type of solar cell may be a solar cell other than the perovskite solar cell 100.

[0083] FIG. 5 is a diagram showing a state in which a perovskite solar cell 100 according to a second embodiment of the present disclosure is installed at an installation location, and corresponds to FIG. Although the electric cable CB is not shown, the electric cable CB may be the same as that in the first embodiment.

[0084] In the second embodiment, the basic configuration is the same as in the first embodiment, and similar configurations are given the same numbers or symbols, so below we will mainly explain the differences from the first embodiment, and may omit explanations of similar parts.

[0085] As shown in FIG. 5, in the second embodiment, the power generation main body 10 further includes a fixing base material 14 that extends beyond the sealing portion 12 and fixes the sealing portion 12 in place.

[0086] Specifically, the back surface of the sealing section 12, which is the back surface side opposite the light-receiving surface of the perovskite solar cell 100, is adhesively fixed to the surface of the fixing substrate . Note that the fixing method is not limited to adhesive fixing, and the sealing portion 12 may be fixed to the fixing base material 14 by sewing it using the portion of the sealing portion 12 outside the photoelectric conversion region 11 .

[0087] The first linear fastener portion 20 and the second linear fastener portion 30 are provided on the fixing base material 14 outside the sealing portion 12 . Specifically, the first tape portion 21 on the other side of the first line fastener portion 20 is arranged so as to be fixed to one side edge of the fixed base material 14, and the second tape portion 31 on one side of the second line fastener portion 30 is arranged so as to be fixed to the other side edge of the fixed base material 14.

[0088] Even with this configuration, the perovskite solar cell 100 can be installed in the same manner as described in the first embodiment.

[0089] Furthermore, since there is a wider range of materials to choose from for the fixing base material 14 than for the sealing portion 12, if a lighter and stronger material (for example, a high-strength cloth or glass cloth) is used, damage in strong winds can be more reliably prevented. Furthermore, since the solar cells can be supported by a strong material, it is also suitable for cases where the solar cells are heavy. However, a mount or the like may be used as the fixing base material 14 depending on the installation environment.

[0090] <<Third Embodiment>> Next, a solar cell and a method for installing a solar cell according to a third embodiment of the present disclosure will be described with reference to FIGS.

[0091] As in the first embodiment, the present embodiment will be described as a suitable example in which the solar cell is a perovskite solar cell 100, but the type of solar cell may be a solar cell other than the perovskite solar cell 100.

[0092] FIG. 6 is a perspective view for explaining the installation location of the perovskite solar cell 100 according to the third embodiment of the present disclosure. FIG. 7 is a cross-sectional view showing a state in which a perovskite solar cell 100 according to a third embodiment of the present disclosure has been installed. 7 is a cross-sectional view drawn to show a cross section when cut in a direction perpendicular to the extending direction of the parapet PPT.

[0093] The third embodiment differs from the first embodiment mainly in the installation location, but the perovskite solar cell 100 is the same as that of the first embodiment. Therefore, in the following, differences from the first embodiment will be described, and descriptions of similarities to the first embodiment may be omitted.

[0094] As shown in FIG. 6, in the third embodiment, a perovskite solar cell 100 (not shown) is installed on a parapet PPT provided on the rooftop or the like of a building. Although the third embodiment will be described using the perovskite solar cell 100 described in the first embodiment as an example, it is of course also possible to use the perovskite solar cell 100 described in the second embodiment.

[0095] In other words, the perovskite solar cell 100 of the third embodiment may be one in which the back surface of the sealing portion 12, which is the back surface side opposite the light-receiving surface of the perovskite solar cell 100 described in the second embodiment, is adhesively fixed to the surface of the fixing substrate 14, and the first line fastener portion 20 and the second line fastener portion 30 are provided on the fixing substrate 14 outside the sealing portion 12.

[0096] The parapet PPT includes a standing wall portion PPT1 that rises from the bottom surface of the roof along the periphery of the roof, and a coping portion PPT2 that is provided on the standing wall portion PPT1.

[0097] The capping section PPT2 is generally waterproofed WP (see Figure 7), for example, by attaching a waterproof plate or applying waterproof paint.

[0098] As shown in Figure 7, in this embodiment, a first mounting portion 40A for fixing the first tape portion 21 on one side (the first tape portion 21 on one side of the first line fastener portion 20) is fixed to one side surface of the vertical wall portion PPT1 of the parapet PPT with an anchor bolt AB.

[0099] The first mounting portion 40A extends along the parapet PPT to a position slightly above the edge of the upper surface of the capping portion PPT2, and the first tape portion 21 on one side (the first tape portion 21 on one side of the first line fastener portion 20) is fixed to the first mounting portion 40A located on the upper surface of the capping portion PPT2.

[0100] In addition, in this embodiment, the second mounting portion 40B for fixing the second tape portion 31 on the other side (the second tape portion 31 on the other side of the second line fastener portion 30) is fixed to the other side surface of the vertical wall portion PPT1 of the parapet PPT with an anchor bolt AB.

[0101] The second mounting portion 40B extends along the parapet PPT to a position slightly above the edge of the upper surface of the capping portion PPT2, and the second tape portion 31 on the other side (the second tape portion 31 on the other side of the second line fastener portion 30) is fixed to the second mounting portion 40B located on the upper surface of the capping portion PPT2.

[0102] As described above, the first mounting portion 40A and the second mounting portion 40B are fixed with anchor bolts AB or the like at positions that avoid the fascia portion PPT2 of the parapet PPT (more specifically, the waterproofing WP area), and the first mounting portion 40A and the second mounting portion 40B extend from the fixed points to the installation position of the perovskite solar cell 100, so that the waterproofing WP area will not be damaged.

[0103] Therefore, as in the case of driving anchor bolts AB into a waterproofed WP portion, it is possible to eliminate the need to waterproof that portion again after installing the anchor bolts AB.

[0104] The material of the first attachment portion 40A and the second attachment portion 40B may be a rigid metal or plastic, or may be a deformable material such as a sheet or cloth. Furthermore, the sheet-like or cloth-like deformable material may be a stretchable (elastic) material.

[0105] For example, if the first mounting portion 40A and the second mounting portion 40B are made of a rigid metal or plastic, the shape must be precisely created. In view of this, it is preferable to use a deformable material such as a sheet or cloth, since there is no need to create a precise shape and it is only necessary to adjust the width.

[0106] Furthermore, if the first mounting portion 40A and the second mounting portion 40B are made of a sheet-like or cloth-like material that has stretchability (elasticity), then even if there is a slight difference in the dimensions of the installation location, the difference in dimensions can be absorbed by stretching without changing the design (width). In other words, if the first mounting portion 40A and the second mounting portion 40B are made of a sheet-like or cloth-like stretchable (elastic) material, they can be installed in various locations while maintaining the same design.

[0107] As in the first embodiment, the method of installing the perovskite solar cell 100 involves first performing a first installation step of attaching the first tape portion 21 on one side to the first installation portion 40A on one side of the installation location, and then performing a second installation step of attaching the second tape portion 31 on the other side to the second installation portion 40B on the other side of the installation location.

[0108] Although the present disclosure has been described above based on specific embodiments, it should be understood that the present disclosure is not limited to the above embodiments. In the embodiments, the solar cell is a perovskite solar cell 100. The perovskite solar cell 100 has the characteristics of being flexible, thin, and lightweight, but because it is so light, it can easily be blown away by wind, etc.

[0109] Therefore, it is a suitable solar cell to be fixed in a manner using a wire fastener that can be easily attached and removed and can be fixed very firmly, and this is an example of the optimum solar cell for the present disclosure. However, as mentioned above, solar cells other than the perovskite solar cell 100 may also be used, and the disclosure of the embodiments does not preclude application of the disclosure to other solar cells.

[0110] As such, the present disclosure also encompasses modifications and improvements to the embodiments within its technical scope, which will be apparent to those skilled in the art from the claims. [Explanation of symbols]

[0111] REFERENCE SIGNS LIST 10 power generating main body portion, 11 photoelectric conversion region, 11A power generating portion, 11A1 first electrode, 11A2 electron transport layer, 11A3 perovskite layer, 11A4 hole transport layer, 11A5 second electrode, 11A6 substrate, 12 sealing portion, 12A back sheet, 12B barrier sheet, 12C sealant, 12D outer edge material, 13 electrical wiring connection portion, 14 fixing substrate, 20 first wire fastener portion, 21 first tape portion, 22 first element part, 23...first slider part, 24...upper stop part, 25...lower stop part, 26...bow pin, 30...second wire fastener part, 31...second tape part, 32...second element part, 33...second slider part, 34...upper stop part, 35...lower stop part, 36...bow pin, 40A...first mounting part, 40B...second mounting part, 100...perovskite solar cell, AB...anchor bolt, PPT...parapet, PPT1...standing wall part, PPT2...cap part, WP...waterproofing

Claims

1. A solar cell, The solar cell is a power generation main body including a photoelectric conversion region in which a power generation unit is disposed; a first fixing portion provided on one side of the power generation main body; a second fixing portion provided on the other side of the power generation main body that faces the one side, At least one of the first fixing portion and the second fixing portion is a wire fastener portion.

2. the power generation main body includes a sealing portion that extends beyond the photoelectric conversion region and seals the power generation portion; The solar cell according to claim 1 , wherein the first fixing portion and the second fixing portion are provided on the sealing portion outside the photoelectric conversion region.

3. The power generation main body includes a sealing portion that seals the power generation portion; a fixing base material that is present outside the sealing portion and fixes the sealing portion, The solar cell according to claim 1 , wherein the first fixing portion and the second fixing portion are provided on the fixing base material outside the sealing portion.

4. The line fastener portion is A pair of tape portions; an element portion that integrates the pair of tape portions by meshing; a slider portion that engages and disengages the element portion, The solar cell according to claim 1 , wherein the tape portion on the other side or one side is attached to one side or the other side of the photoelectric conversion region.

5. The solar cell installation method according to claim 4, The installation method includes: an attachment step of attaching the tape portion on one side or the other side to one side or the other of an installation location; and an integration step of engaging the element portion with the slider portion to integrate the pair of tape portions.

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