Solar cell unit and installation method

Abstract

We provide a solar cell unit that can be installed near windows, offering improved installation flexibility. [Solution] The solar cell unit 100 of the present disclosure is a solar cell unit 100 to be installed near a window, and the solar cell unit 100 comprises a solar cell 10 and a support part 20 attached to a frame part FL near the window and supporting the solar cell 10, and the support part 20 comprises a support rod 21 that can be extended and retracted and detachably attached to the frame part FL. For example, the support rod 21 comprises a thick pipe 21A and a thin pipe 21B that is partially inserted into the thick pipe 21A from one side of the thick pipe 21A, and the support rod 21 extends and retracts as the length of the thin pipe 21B inserted into the thick pipe 21A changes relative to the thick pipe 21A.

Description

Technical Field

[0001] The present disclosure relates to a solar cell unit installed near a window and a method for installing the same.

Background Art

[0002] In Patent Document 1, there is provided a frame body disposed between a window jamb and a window sill inside a window portion of a building, a power generation unit provided on the frame body that receives sunlight incident from the window and generates electricity, and upper and lower connection mechanisms that connect the upper and lower portions of the frame body to the window jamb and the window sill. The frame body is formed by connecting the upper and lower portions of a pair of vertical frames arranged left and right with a pair of horizontal frames. The power generation unit includes a plurality of blades arranged vertically in a posture parallel to the horizontal frame with the longitudinal direction being the horizontal direction, a rotation mechanism that rotates the plurality of blades around a rotation axis arranged parallel to each blade, and a solar cell panel disposed on the outer surface of the blade. A solar power generation system for a window is disclosed in which the connection mechanism includes a holding member that is disposed on the window jamb and the window sill and holds the upper and lower portions of the frame body to maintain the frame body in a vertical posture.

[0003] According to the solar power generation system for a window having the above-described configuration in Patent Document 1, a frame body provided with a power generation unit including a solar power generation panel is disposed between a window jamb and a window sill inside a window portion of a building via a connection mechanism, so that the solar power generation panel can be easily, simply, and safely installed in the window portion.

[0004] In addition, in Patent Document 1, particularly, since this solar cell system holds the upper and lower portions of the frame body via holding members disposed on the window jamb and the window sill of the window portion to maintain the frame body in a vertical posture, it is described that the frame body can be easily and simply connected to an existing window portion of a building, and the power generation unit can be disposed at a predetermined position in the window portion.

[0005] Furthermore, Patent Document 1 states that because this solar cell system is placed on the inside of a window, it can be used safely and with peace of mind even on windows on high floors or non-opening, fixed windows. It also states that, in particular, because the solar power generation panels are placed indoors, no measures are needed to protect against strong winds or rainwater intrusion, and it can be used for a long period of time while drastically reducing the accumulation of dirt and dust on the surface.

[0006] In addition, Patent Document 1 states that the power generation unit has a structure in which multiple vanes, each having a solar cell panel on its surface, are rotated by a rotation mechanism, and that this has the advantage of being able to adjust the orientation of the solar cell panels according to the altitude of the sun and improve its power generation efficiency. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2023-130024 [Overview of the project] [Problems that the invention aims to solve]

[0008] However, Patent Document 1 uses many structures and components such as a frame, connecting mechanism, multiple slats, rotation mechanism, and holding member, resulting in low flexibility in installation in response to changes in the structure around the building's window area.

[0009] This disclosure is made in view of these circumstances, and one of its purposes is to provide a solar cell unit that can be installed near a window with improved installation flexibility, and a method for installing the same. [Means for solving the problem]

[0010] The solar cell unit of this disclosure is a solar cell unit installed near a window, The aforementioned solar cell unit is Solar cells and It comprises a support portion attached to the frame portion near the window and supporting the solar cell, The support portion includes a support rod that can be extended and retracted and detachably attached to the frame portion.

[0011] The installation method described herein is an installation method for installing a solar cell unit near a window, The aforementioned solar cell unit Solar cells and It comprises a support portion attached to the frame portion near the window and supporting the solar cell, The support portion includes a support rod that can be extended and retracted and detachably attached to the frame portion. The installation method includes an installation step of extending and retracting the support rod and attaching it to the frame near the window. [Effects of the Invention]

[0012] This disclosure provides a solar cell unit that can be installed near a window with improved installation flexibility, and a method for installing the same. [Brief explanation of the drawing]

[0013] [Figure 1] This is a diagram illustrating an example of a location for installing the solar cell unit of the first embodiment relating to this disclosure. [Figure 2] This figure shows the solar cell unit of the first embodiment of the present disclosure in an installed state. [Figure 3] This is a cross-sectional view along line AA in Figure 2. [Figure 4] This is a plan view of the support portion of the first embodiment relating to this disclosure. [Figure 5] This is a perspective view showing the first mounting portion of the mounting mechanism of the first embodiment of the present disclosure in a closed state. [Figure 6] This is a perspective view showing the first mounting portion of the mounting mechanism of the first embodiment of the present disclosure in an open state. [Figure 7] This figure shows the solar cell unit of the second embodiment of the present disclosure in an installed state. [Figure 8] Figure 7 is a cross-sectional view along line BB. [Figure 9]This is a diagram for explaining the frame portion of the first modification according to the present disclosure. [Figure 10] This is a diagram for explaining the frame portion of the second modification according to the present disclosure.

Modes for Carrying Out the Invention

[0014] Hereinafter, with reference to the accompanying drawings, embodiments for implementation (hereinafter referred to as "embodiments") will be described in detail. Throughout the description of the embodiments, the same elements are given the same numbers or reference signs.

[0015] However, not all numbers or reference signs are given in all the drawings, and depending on the drawings, numbers or reference signs may be omitted in consideration of the clarity of the drawings.

[0016] <<First Embodiment>> The solar cell unit 100 installed near the window according to the first embodiment of the present disclosure and the installation method of the solar cell unit 100 will be described with reference to FIGS. 1 to 6.

[0017] In the first embodiment, the case where the solar cell 10 is a perovskite solar cell which is a sheet-like solar cell will be described.

[0018] However, the solar cell 10 does not necessarily have to be a perovskite solar cell, and other sheet-like solar cells may also be used.

[0019] Also, the solar cell 10 does not have to be a sheet-like solar cell as long as it is a solar cell that can fit within the load-bearing capacity of the support portion 20 described later.

[0020] FIG. 1 is a diagram for explaining an example of the location where the solar cell unit 100 according to the first embodiment of the present disclosure is installed. FIG. 2 is a diagram showing the state where the solar cell unit 100 according to the first embodiment of the present disclosure is installed, and is a plan view seen from the outer window OWD side. Note that Figure 2 shows only the rectangular inner surface of the frame section FL. Figure 3 is a cross-sectional view taken along line AA in Figure 2.

[0021] Figure 1 shows a so-called double-skin sash, which consists of an outer window OWD and an inner window IWD that is installed, for example, about 40 cm away from the outer window OWD.

[0022] Although not shown in the diagram, damper units and the like are provided on the upper U and lower D sides, forming an airflow in the space between the outer window OWD and the inner window IWD.

[0023] Furthermore, since the inner window IWD is provided to be openable and closable, the space between the outer window OWD and the inner window IWD can be easily accessed. In the first embodiment, a case will be described in which a solar cell unit 100 is installed in the frame FL that forms the space between the outer window OWD and the inner window IWD, as shown in Figure 2.

[0024] As shown in Figure 2, the solar cell unit 100 includes a solar cell 10, a support part 20 attached to the frame part FL near the window (outer window OWD and inner window IWD) to support the solar cell 10, and a mounting mechanism 30 for attaching the solar cell 10 to the support rod 21 of the support part 20.

[0025] [Solar cell 10] As shown in Figures 2 and 3, the solar cell 10 includes a photoelectric conversion region 11 having a power generation section 11A, a sealing section 12 that seals the power generation section 11A, and an electrical wiring connection section 13 provided on the light-receiving surface side of the photoelectric conversion region 11.

[0026] As mentioned earlier, the solar cell 10 is not limited to a perovskite solar cell; for example, the power generation unit 11A may be a sheet-like solar cell containing a titanium oxide nanoparticle film coated with a dye and an electrolyte.

[0027] Furthermore, the solar cell 10 may be an organic semiconductor-based sheet-shaped solar cell having an organic semiconductor layer in the power generation section 11A.

[0028] The electrical wiring connection section 13 may be provided on the back side of the photoelectric conversion area 11, which is opposite to the light-receiving surface. Furthermore, electrical wiring (not shown) for extracting the power generated by the solar cell 10 is connected to the electrical wiring connection section 13.

[0029] (Photoelectric conversion region 11) As shown in Figure 3, the photoelectric conversion region 11 is a region in which light is converted into electricity by the arrangement of a power generation unit 11A having a perovskite layer 11A3.

[0030] In this embodiment, one power generation unit 11A is arranged in the photoelectric conversion region 11, but there is no limit to the number of power generation units 11A that can be arranged. The number of power generation units 11A to be arranged can be determined according to the size of the photoelectric conversion region 11 required for the solar cell 10.

[0031] "Power generation unit 11A" The power generation unit 11A includes a first electrode 11A1 (anode) provided on the back side opposite to the light-receiving surface, an electron transport layer 11A2 provided on the first electrode 11A1, a perovskite layer 11A3 which serves as a photoelectric conversion layer provided on the electron transport layer 11A2, a hole transport layer 11A4 provided on the perovskite layer 11A3, a light-transmitting second electrode 11A5 (cathode) provided on the hole transport layer 11A4, and a light-transmitting substrate 11A6 provided on the second electrode 11A5.

[0032] (1) First electrode 11A1: The first electrode 11A1 is an electrode for extracting electrons generated in the perovskite layer 11A3, and is connected to wiring (not shown) for extracting 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.

[0033] (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 includes, for example, a halogen compound or a metal oxide.

[0034] (3) Perovskite layer 11A3: The perovskite layer 11A3 is a layer that absorbs light and converts it into photoelectricity, and contains a perovskite compound.

[0035] (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. For example, a metal oxide can be used for the hole transport layer 11A4.

[0036] (5) Second electrode 11A5: The second electrode 11A5 is an electrode that functions as a cathode, and wiring (not shown) is connected to it. Furthermore, the second electrode 11A5 uses a transparent electrode material such as indium tin oxide (ITO) or fluorine-doped tin oxide (FTO) to allow light from the light-receiving surface to pass through to the perovskite layer 11A3.

[0037] (6) Base material 11A6: The substrate 11A6 is a starting material for forming the second electrode 11A5, hole transport layer 11A4, perovskite layer 11A3, electron transport layer 11A2, and first electrode 11A1. A translucent material is used to allow light from the light-receiving surface to pass through to the perovskite layer 11A3. For example, quartz glass or polyethylene terephthalate can be suitably used.

[0038] (Sealing part 12) The sealing portion 12 includes a back sheet 12A provided on the back side opposite to the light-receiving surface, spaced apart from the first electrode 11A1; a light-transmitting barrier sheet 12B provided on the light-receiving surface side, spaced apart from the base material 11A6; a light-transmitting sealant 12C filled between the back sheet 12A, the barrier sheet 12B and the power generation portion 11A; and an outer edge material 12D provided along the entire length of the outer edge to seal the gap between the outer edge of the back sheet 12A and the barrier sheet 12B. The above-described configuration of the sealing section 12 is merely an example and is not limited to this configuration. Any configuration that can adequately protect the power generation section 11A from, for example, moisture is acceptable.

[0039] [Support part 20] Figure 4 is a plan view of the support portion 20 of the first embodiment according to this disclosure, and the thick pipe 21A and the thin pipe 21B are shown in cross-sectional view to show their internal state.

[0040] As shown in Figures 2 and 4, the support section 20 comprises a support rod 21 that can be extended and retracted and detachably attached to the frame section FL (see Figure 2), a cap section 22 having a pair of caps (cap 22A and cap 22B) provided at the end of the support rod 21, and a compression coil spring 23 (see Figure 4) housed inside the support rod 21. The set consisting of the support rod 21, the cap portion 22, and the compression coil spring 23 is sometimes referred to as the support mechanism.

[0041] (Support rod 21) As shown in Figure 4, the support rod 21 comprises a thick pipe 21A and a thin pipe 21B that is partially inserted into the thick pipe 21A from one side (left side in Figure 4).

[0042] The support rod 21 is equipped with a pin PN that is bridged in the diametrical direction within the thin pipe 21B.

[0043] Therefore, when the thin pipe 21B is rotated in the first rotational direction, the thin pipe 21B moves in a direction that extends outward from the thick pipe 21A as the pin PN slides along the spiral of the compression coil spring 23, and the overall length of the support rod 21 increases.

[0044] Conversely, when the thin pipe 21B is rotated in the second rotation direction, which is opposite to the first rotation direction, the thin pipe 21B similarly moves in a direction that accommodates it within the thick pipe 21A as the pin PN slides along the spiral of the compression coil spring 23, thereby shortening the overall length of the support rod 21.

[0045] In this way, the support rod 21 expands and contracts as the length of the thin pipe 21B inserted into the thick pipe 21A changes relative to the thick pipe 21A.

[0046] (Cap portion 22) The cap portion 22 includes a cap 22B that closes the opening at the other end of the thick pipe 21A (the right end in Figure 4), and a cap 22A that closes the opening at one end of the thin pipe 21B (the left end in Figure 4).

[0047] The caps on one side and the cap on the other side (cap 22A and cap 22B) have contact surfaces (contact surface 22A1 and contact surface 22B1) that are installed on the frame FL, and the area of ​​both contact surfaces (contact surface 22A1 and contact surface 22B1) is larger than the cross-sectional area of ​​the thick pipe 21A.

[0048] Furthermore, as described above, by increasing the size of the contact surface (contact surface 22A1 and contact surface 22B1), the support rod 21 can be firmly fixed to the frame FL.

[0049] Furthermore, if a pipe with a closed end on one side and an open end on the other side is used as the thick pipe 21A, the cap 22B can be omitted. Similarly, if a pipe with a closed end on one side and an open end on the other side is used, the cap 22A can be omitted. Therefore, the cap portion 22 is not necessarily required.

[0050] Therefore, the support mechanism may consist of a support rod 21 and a compression coil spring 23 as a single set.

[0051] (Compression coil spring 23) The compression coil spring 23 has one end 23A that is free, while the other end 23B is fixed to the other end of the thick pipe 21A or to the other end of the cap 22B.

[0052] Therefore, when the thin pipe 21B is rotated, the rotation of the compression coil spring 23 together with the thin pipe 21B is suppressed, while the rotation of the thin pipe 21B relative to the compression coil spring 23 is permitted.

[0053] The compression coil spring 23 biases the thin pipe 21B in a direction that pushes it out from the thick pipe 21A. Due to this biasing force, the support rod 21 is held taut within the frame FL, allowing the support rod 21 to be installed within the frame FL.

[0054] The structure of the support section 20 described above is merely one example of a preferred form. The support section 20 only needs to include a support rod 21 that can be extended and retracted and detachably attached to the frame section FL, and the mechanism for extending and retracting the support rod may be implemented by a different mechanism.

[0055] For example, it is also possible to create an expandable and contractible support rod 21 by forming a spiral recess on the inner surface of the thick pipe 21A and a spiral projection on the outer surface of the thin pipe 21B that can be screwed into the spiral recess.

[0056] [Mounting mechanism 30] Figure 5 is a perspective view showing the first mounting portion 31 of the mounting mechanism 30 according to the first embodiment of this disclosure in a closed state. Figure 6 is a perspective view showing the first mounting portion 31 of the mounting mechanism 30 of the first embodiment of the present disclosure in an open state.

[0057] As shown in Figures 5 and 6, the mounting mechanism 30 includes a first mounting portion 31 that is detachably attached to the support rod 21, a second mounting portion 32 for detachably attaching the solar cell 10, and a connecting portion 33 that connects the first mounting portion 31 and the second mounting portion 32.

[0058] Alternatively, the connecting portion 33 may be omitted, and the second mounting portion 32 may be directly attached to the first mounting portion 31.

[0059] The first mounting portion 31 includes a pair of semicircular movable pieces 31A, a fixing portion 31B that rotatably fixes one end of each of the movable pieces 31A together, and an engaging portion 31C that engages the other ends of each of the movable pieces 31A together.

[0060] Specifically, the engaging portion 31C includes complementary shaped protrusions and recesses 31C1 (see Figure 6) formed on one end of the movable piece 31A and on the other end of the movable piece 31A.

[0061] Then, by rotating the pair of movable pieces 31A around the fixed part 31B so that the other ends of the movable pieces 31A overlap, and by engaging the concave and concave parts 31C1 with the other ends, the first mounting part 31 becomes ring-shaped, as shown in Figure 5.

[0062] Conversely, when the pair of movable pieces 31A are rotated around the fixed portion 31B in a direction that separates the other ends of the movable pieces 31A, the interlocking of the protruding portions 31C1 is released and the engagement of the other ends is released, the ring shape of the first mounting portion 31 opens up on the other end sides of the pair of movable pieces 31A, as shown in Figure 6.

[0063] On the other hand, the second mounting portion 32 is a so-called clip, but it does not need to be limited to a clip; any object to which the solar cell 10 can be attached is acceptable.

[0064] Next, an installation method for installing the solar cell unit 100 of the first embodiment according to this disclosure near a window (outer window OWD and inner window IWD) will be described.

[0065] First, the support rod 21 of the support section 20 is extended and retracted to attach it to the frame section FL near the window (outer window OWD and inner window IWD) in an installation step (also called the first installation step).

[0066] Specifically, the thin pipe 21B of the support rod 21 is rotated to adjust the total length of the support rod 21 so that it is, for example, several centimeters longer than the distance W between the opposite pair of sides of the frame FL (see Figure 2).

[0067] Then, the contact surface 22A1 of the cap 22A on one side that closes the opening at one end of the thin pipe 21B (the left end in Figure 2 and Figure 4) is pressed against one of the pair of opposing sides of the frame FL, thereby pushing the thick pipe 31A to one side against the biasing force of the compression coil spring 23.

[0068] As a result, the compression coil spring 23 compresses, causing the thin pipe 21B to be housed inside the thick pipe 31A, and the overall length of the support rod 21 to shorten.

[0069] Then, when the total length of the support rod 21 becomes shorter than the spacing width W (see Figure 2), the pressure on one side of the thick pipe 31A is released so that the contact surface 22B1 of the other cap 22B that closes the opening at the other end of the thick pipe 21A (Figure 2 and the right end in Figure 4) comes into contact with the other side of the pair of opposing sides of the frame FL.

[0070] As a result, the compression coil spring 23 stretches, causing the thin pipe 21B to move outwards from the thick pipe 31A, increasing the overall length of the support rod 21, and the contact surface 22B1 comes into contact with the other side of the pair of opposing sides of the frame FL.

[0071] As explained earlier, since the total length of the support rod 21 was adjusted to be longer than the spacing width W (see Figure 2), the compression coil spring 23 is not fully extended even when the contact surface 22B1 is in contact with the other side of the pair of opposing sides of the frame FL.

[0072] Therefore, although the thin pipe 21B is still biased to exit the thick pipe 31A in order for the compression coil spring 23 to be fully extended, the compression coil spring 23 cannot extend any further because the pair of caps (caps 22A and 22B) of the cap portion 22 are in contact with the inner surfaces of a pair of opposite sides of the frame portion FL, as shown in Figure 2.

[0073] As a result, the biasing force of the compression coil spring 23 causes the support rod 21 to be braced within the frame FL, and the support rod 21 is installed within the frame FL.

[0074] Then, as described above, after performing the mounting step of attaching it to the frame FL, the next step is to attach the mounting mechanism 30 to the support rod 21 (also called the second mounting step).

[0075] Specifically, as shown in Figure 6, the ring shape of the first mounting portion 31 is opened at the other end of the pair of movable pieces 31A, and when closed, the support rod 21 is positioned inside the ring shape, the protrusions and recesses 31C1 interlock, and the other ends engage, so that the first mounting portion 31 becomes ring-shaped as shown in Figure 5.

[0076] In this manner, after performing the mounting step of attaching the mounting mechanism 30 to the support rod 21, the final mounting step (also called the third mounting step) is performed to attach the solar cell 10.

[0077] As explained earlier, the second mounting portion 32 of the mounting mechanism 30 for attaching the solar cell 10 has a so-called clip structure. By clipping one side of the solar cell 10 (the upper side in Figure 2) with the second mounting portion 32, the solar cell 10 is attached, and the solar cell 10 is supported by the support rod 21 of the support portion 20.

[0078] Although the above explanation describes the procedure as performing the first installation step followed by the second installation step, and then the third installation step after the second installation step, this is merely an indication of the order in which the installation work is easiest. The installation work can be performed in any order, so it is not necessary to be limited to the order shown above.

[0079] Furthermore, since the perovskite solar cell 10 of the first embodiment can be made into a very thin sheet, instead of using the mounting mechanism 30 described above, it is also possible to fix it to the support rod 21 of the support part 20 using adhesive or tape, and the mounting mechanism 30 may be replaced with adhesive or tape.

[0080] According to the first embodiment described above, even if the size of the frame portion FL near the window changes, the support portion 20 is equipped with a support rod 21 that can be extended and retracted and detachably attached to the frame portion FL, so it can be installed without design changes or the like in case of a certain degree of size change.

[0081] Thus, the solar cell unit 100 installed near the window in the first embodiment, and the method of installation thereof, offer improved flexibility in installation.

[0082] <<Second Embodiment>> Next, a solar cell unit 100 installed near a window in the second embodiment of the present disclosure, and a method for installing the solar cell unit 100, will be described with reference to Figures 7 and 8.

[0083] The solar cell unit 100 of the second embodiment has the same basic configuration as the solar cell unit 100 of the first embodiment. Therefore, the following description will mainly focus on the differences from the first embodiment, and explanations of similar points may be omitted.

[0084] Figure 7 is a diagram showing the solar cell unit 100 of the second embodiment of this disclosure in an installed state, and is a plan view as seen from the outer window OWD side. Note that Figure 7 corresponds to Figure 2. Figure 8 is a cross-sectional view of line BB in Figure 7, and some components, such as the compression coil spring 23 and thin pipe 21B housed within the support rod 21, are omitted from the illustration.

[0085] As shown in Figure 7, the solar cell unit 100 of the second embodiment has a support portion 20 that includes a pair of support rods 21.

[0086] Specifically, the support portion 20 differs from the first embodiment in that it comprises a support mechanism consisting of a support rod 21, a cap portion 22 having caps (caps 22A and caps 22B), and a compression coil spring 23 provided inside the support rod 21.

[0087] In other words, the support section 20 is equipped with two support mechanisms, each consisting of a support rod 21, a cap section 22, and a compression coil spring 23 as a set, and the pair of support mechanisms are spaced apart and provided on the frame section FL.

[0088] In addition, the mounting mechanism 30 is detachably provided on the pair of support rods 21, and the solar cell 10 is attached to the pair of support rods 21, which is a difference from the first embodiment.

[0089] In other words, the solar cell unit 100 of the second embodiment is detachably mounted on a pair of support rods 21 and includes a mounting mechanism 30 for attaching the solar cell 10 to the pair of support rods 21.

[0090] Since the two support mechanisms provided by the support portion 20 of the second embodiment are the same as those described in the first embodiment, the following description will mainly focus on the mounting mechanism 30 of the second embodiment.

[0091] As shown in Figure 8, the mounting mechanism 30 of the second embodiment includes a first mounting portion 31 (a pair of first mounting portions 31) that is detachably attached to the support rod 21, and a second mounting portion 32 for detachably attaching the solar cell 10.

[0092] Specifically, the mounting mechanism 30 comprises a rectangular base sheet 31S larger than the outer dimensions of the solar cell 10, a pair of hook fasteners 31M1 (for example, the pair of hook fasteners 31M1 on the upper side of Figure 8) provided near one of the opposing sides of the base sheet 31S (a pair of upper and lower sides in Figures 7 and 8) to form a first mounting portion 31, a pair of hook fasteners 31M1 (for example, the pair of hook fasteners 31M1 on the lower side of Figure 8) provided near the other side of the opposing side of the base sheet 31S (a pair of upper and lower sides in Figures 7 and 8) to form a first mounting portion 31, and a hook fastener 31M2 provided at the location on the base sheet 31S where the solar cell 10 is to be mounted, which functions as a second mounting portion 32. Note that the first side may be the lower side and the second side may be the upper side.

[0093] The pair of hook fasteners 31M1 for forming the first mounting portion 31 are both provided with a width separation that allows them to be wrapped around the support rod 21 of the base sheet 31S.

[0094] Therefore, after performing the first mounting step of the second embodiment, which is the same as the first mounting step of the first embodiment, the second mounting step of the second embodiment, which corresponds to the second mounting step of the first embodiment, is performed by wrapping the first and second sides of the base sheet 31S around the corresponding support rods 21, and bringing the pair of hook fasteners 31M1 together.

[0095] In the first mounting step of the second embodiment, the difference is that the two support mechanisms provided by the support portion 20 are attached, but the procedure for attaching each support mechanism is the same as that described in the first mounting step of the first embodiment.

[0096] As a result, as shown in Figure 8, the first mounting portion 31 becomes a closed ring shape and is attached to the support rod 21.

[0097] The first mounting portion 31 may be made into a ring shape by sewing the first and second sides of the base sheet 31S together so that it does not open. In this case, the second mounting step, which involves attaching to the support rod 21, can be performed before the first mounting step.

[0098] In other words, before performing the first mounting step, the second mounting step can be performed by passing the support rod 21 through the ring-shaped first mounting portion 31 to attach the first mounting portion 31 to the support rod 21.

[0099] Needless to say, the pair of hook-and-loop fasteners 31M1 can be replaced with a pair of buttons or other configurations that can achieve a similar state. Furthermore, as mentioned above, instead of sewing it in to form a ring that does not open, the first mounting part 31 can be fixed with adhesive to form a ring that does not open.

[0100] On the other hand, in the second embodiment, the solar cell 10 is equipped with a hook-and-loop fastener 14 on the back side opposite to the light-receiving surface. For example, a hook-and-loop fastener 14 is provided on the back side of the solar cell 10 by adhesive or other means.

[0101] Therefore, the third mounting step in the second embodiment, which corresponds to the third mounting step in the first embodiment, can be performed by aligning the hook-and-loop fastener 31M2, which functions as the second mounting portion 32, with the hook-and-loop fastener 14 on the back side of the solar cell 10.

[0102] Alternatively, instead of providing a hook-and-loop fastener 31M2 that functions as the second mounting portion 32, the solar cell 10 may be directly bonded and fixed to the mounting location, so that the second mounting portion 32 is made of adhesive.

[0103] Furthermore, in the second embodiment, the two support mechanisms provided by the spaced-apart support portion 20 were shown in an example where the support rod 21 is horizontally provided to the frame portion FL near the window (outer window OWD and inner window IWD), but the support rod 21 may also be provided vertically.

[0104] Furthermore, the solar cell unit 100 installed near the window in the second embodiment, and its installation method, offer improved installation flexibility, similar to the first embodiment, and are configured to easily maintain the solar cell 10 in an extended state.

[0105] <<Other variations>> Next, other modifications relating to this disclosure will be described with reference to Figures 9 and 10. In the first and second embodiments, the frame portion FL near the window on which the solar cell unit 100 is installed is shown to be the frame portion FL between the outer window OWD and the inner window IWD that forms the space between the outer window OWD and the inner window IWD of the double-skin sash. However, the frame portion FL near the window on which the solar cell unit 100 is installed is not limited to such a frame portion FL.

[0106] Figure 9 is a diagram illustrating the frame portion FL of the first modified example relating to this disclosure. Figure 10 is a diagram illustrating the frame portion FL of the second modified example relating to this disclosure.

[0107] As shown in Figure 9, the frame FL near the window to which the solar cell unit 100 (not shown) is attached may be the frame FL for the bay window DWD.

[0108] Furthermore, as shown in Figure 10, the frame FL near the window to which the solar cell unit 100 (not shown) is attached may be the frame FL for the skylight SWD.

[0109] Thus, the frame portion FL near the window on which the solar cell unit 100 (not shown) is attached is not particularly limited to the configuration of the window, as long as it is a frame portion near the window on which the solar cell unit 100 (not shown) can be installed.

[0110] Furthermore, it is not necessary to limit the frame to a protruding section FL, such as a bay window DWD or a skylight SWD. Even a frame (not shown) for installing a general aluminum sash can be used as the frame near the window to which the solar cell unit 100 (not shown) is installed, as long as it has a width that allows the solar cell unit 100 (not shown) to be installed.

[0111] Furthermore, even in the case of aluminum sashes, if the frame of the aluminum sash itself, which has window rails, etc., is wide and a solar cell unit 100 (not shown) is attached, the frame of the aluminum sash itself may be used as the frame portion near the window to which the solar cell unit 100 (not shown) is attached.

[0112] Although the above has been explained based on specific embodiments, this disclosure is not limited to the embodiments described above.

[0113] For example, while the embodiments have mainly shown cases where the solar cell unit 100 is installed on the inside of a building, the solar cell unit 100 may also be installed on the outside of the building, near the window frame FL.

[0114] However, if the solar cell 10 is a perovskite solar cell as shown in the embodiment, it is possible that it will degrade more easily if installed on the outside of the building. Therefore, it is preferable to install it on the inside side of the frame FL near the window.

[0115] Thus, the scope of this disclosure also includes modifications and improvements to the embodiments, which will be apparent to those skilled in the art from the claims. [Explanation of Symbols]

[0116] 10...Solar cell, 11...Photoelectric conversion region, 11A...Power generation section, 11A1...First electrode, 11A2...Electron transport layer, 11A3...Perovskite layer, 11A4...Hole transport layer, 11A5...Second electrode, 11A6...Substrate, 12...Sealing section, 12A...Backsheet, 12B...Barrier sheet, 12C...Sealant, 12D...Outer edge material, 13...Electrical wiring connection section, 14...Flip-flop fastener, 20...Support section, 21...Support rod, 21A...Thick pipe, 21B...Thin pipe, 22... • Cap section, 22A, 22B... Cap, 22A1, 22B1... Contact surface, 23... Compression coil spring, 23A, 23B... End section, 30... Mounting mechanism, 31... First mounting section, 31A... Movable piece, 31B... Fixed section, 31C... Engaging section, 31C1... Concave and concave section, 31S... Base sheet, 31M1, 31M2... Velcro fastener, 32... Second mounting section, 33... Connecting section, D... Lower side, FL... Frame section, IWD... Inner window, OWD... Outer window, PN... Pin, U... Upper side, W... Separation width

Claims

1. A solar panel unit to be installed near a window, The aforementioned solar cell unit is Solar cells and It comprises a support portion attached to the frame portion near the window and supporting the solar cell, The support portion is a solar cell unit that includes a support rod that can be extended and retracted and detachably attached to the frame portion.

2. The aforementioned support rod is Thick pipe and The system comprises a thin pipe inserted into the thick pipe from one side of the thick pipe, The solar cell unit according to claim 1, wherein the support rod expands and contracts as the length of the thin pipe inserted into the thick pipe changes relative to the thick pipe.

3. The support portion comprises a cap portion having a pair of caps provided at the end of the support rod, The aforementioned cap portion is The other end cap closes the opening at the other end of the thick pipe, It comprises a cap on one end that closes the opening at one end of a thin pipe, The caps on one side and the other side have a contact surface that is installed on the frame portion. The solar cell unit according to claim 2, wherein the area of ​​each of the aforementioned contact surfaces is greater than the cross-sectional area of ​​the thick pipe.

4. The support portion comprises a pair of support rods, The solar cell unit according to any one of claims 1 to 3, wherein the solar cell unit is detachably provided with respect to a pair of support rods and comprises a mounting mechanism for attaching the solar cell to the pair of support rods.

5. The aforementioned mounting mechanism is A first mounting portion attached to the support rod, The solar cell unit according to claim 4, further comprising a second mounting portion for attaching the aforementioned solar cell.

6. A method of installing solar panels near a window, The aforementioned solar cell unit Solar cells and It comprises a support portion attached to the frame portion near the window and supporting the solar cell, The support portion includes a support rod that can be extended and retracted and detachably attached to the frame portion. The installation method includes an installation step of extending and retracting the support rod and attaching it to the frame near the window.

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