Solar cell unit and installation method

Abstract

A solar cell unit having an installation mechanism that can accommodate new installations is provided. [Solution] The solar cell unit 100 of the present disclosure is a solar cell unit 100 having an installation mechanism 20, and the solar cell unit 100 includes a solar cell (e.g., a perovskite solar cell 10) and an installation mechanism 20 that installs the solar cell, the installation mechanism 20 being a mechanism that grips and pulls the solar cell. The installation mechanism 20 also includes, for example, a gripping tool 21 that grips the solar cell and a pulling tool 22 that pulls the gripping tool 21.

Description

[Technical Field]

[0001] The present disclosure relates to a solar cell unit having an installation mechanism and an installation method thereof. [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. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-117617 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the method of Patent Document 1 is not intended for installing solar cells in new locations, and is not suitable for new solar cell installations that will be carried out in the future.

[0005] The present disclosure has been made in view of the above circumstances, and has as its object to provide a solar cell unit having an installation mechanism that can accommodate new installations, and an installation method thereof. [Means for solving the problem]

[0006] The solar cell unit of the present disclosure comprises: A solar cell unit having an installation mechanism, The solar cell unit comprises: A solar cell and the installation mechanism for installing the solar cell; The setting mechanism is a mechanism for gripping and pulling the solar cell.

[0007] The installation method of the present disclosure is a method for installing a solar cell unit, comprising: and a fixing step of gripping and pulling the solar cell to fix it at a fixing location. [Effects of the Invention]

[0008] According to the present disclosure, it is possible to provide a solar cell unit having an installation mechanism that can accommodate new installations, and an installation method thereof. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating an installed state of a solar cell unit according to a first embodiment of the present disclosure. [Figure 2] FIG. 2 is a cross-sectional view taken along the line A1-A1 in FIG. [Figure 3] 1 is a side view showing a gripping tool in a grip release state according to a first embodiment of the present disclosure. FIG. [Figure 4] 1 is a side view showing a gripping tool in a gripping state according to a first embodiment of the present disclosure. FIG. [Figure 5] 1 is a perspective view of a gripping tool according to a first embodiment of the present disclosure. FIG. [Figure 6] FIG. 10 is a diagram showing a state in which a solar cell unit according to a second embodiment of the present disclosure is installed. [Figure 7] FIG. 7 is a cross-sectional view taken along the line A2-A2 in FIG. 6. [Figure 8] FIG. 10 is a top view showing a gripping tool in a grip release state according to a third embodiment of the present disclosure. [Figure 9] FIG. 10 is a top view showing a gripping tool in a gripping state according to a third embodiment of the present disclosure. [Figure 10] FIG. 10 is a perspective view showing a gripping tool in a released state according to a fourth embodiment of the present disclosure. [Figure 11] FIG. 10 is a perspective view showing a gripping tool in a gripping state according to a fourth embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0010] 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.

[0011] However, not all numbers or symbols are assigned to all drawings, and in consideration of ease of viewing the drawings, some numbers or symbols may be omitted from some drawings.

[0012] <<First Embodiment>> A solar cell unit 100 having an installation mechanism 20 according to a first embodiment of the present disclosure and an installation method for the solar cell unit 100 will be described with reference to FIGS. 1 to 5. FIG.

[0013] In the first embodiment, a case will be described in which the sheet-shaped solar cell is a perovskite solar cell 10. However, the solar cell does not have to be limited to the perovskite solar cell 10, and may be any other sheet-shaped solar cell.

[0014] FIG. 1 is a diagram showing a state in which a solar cell unit 100 according to a first embodiment of the present disclosure is installed. FIG. 1 is a front view of the light-receiving surface of the perovskite solar cell 10. FIG. 2 is a cross-sectional view taken along line A1-A1 in FIG. FIG. 3 is a side view showing the gripping tool 21 in the released state according to the first embodiment of the present disclosure. FIG. 4 is a side view showing the gripping tool 21 in the gripping state according to the first embodiment of the present disclosure. FIG. 5 is a perspective view of a gripping tool 21 according to the first embodiment of the present disclosure.

[0015] As shown in Figure 1, the solar cell unit 100 having the installation mechanism 20 of the first embodiment comprises a sheet-like perovskite solar cell 10 and an installation mechanism 20 that installs the perovskite solar cell 10 in an unfolded state.

[0016] In the first embodiment, the sheet-like perovskite solar cell 10 is rectangular, and in order to install the perovskite solar cell 10 in an unfolded state, the installation mechanism 20 includes four gripping devices 21 corresponding to each corner of the perovskite solar cell 10, and four pulling devices 22 provided for each gripping device 21, which pull the corresponding gripping device 21 and put the perovskite solar cell 10 in an unfolded state.

[0017] [Perovskite solar cells 10] As shown in Figures 1 and 2, the perovskite solar cell 10 comprises 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.

[0018] As mentioned above, the solar cell does not have to be limited to the perovskite solar cell 10, and may be, for example, a sheet-like solar cell in which the power generation section 11A includes a dye-coated titanium oxide nanoparticle film and an electrolyte.

[0019] The solar cell may also be an organic semiconductor sheet-shaped solar cell having an organic semiconductor layer in the power generation section 11A.

[0020] The electrical wiring connection portion 13 may be provided on the back surface side of the photoelectric conversion region 11, which is the side opposite to the light-receiving surface. Furthermore, electrical wiring (not shown) for extracting the power generated by the perovskite solar cell 10 is connected to the electrical wiring connection section 13.

[0021] (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.

[0022] 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 10.

[0023] "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.

[0024] (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.

[0025] (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.

[0026] (3) Perovskite layer 11A3: The perovskite layer 11A3 is a layer that absorbs light and performs photoelectric conversion, and contains a perovskite compound.

[0027] (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.

[0028] (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.

[0029] (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.

[0030] (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.

[0031] [Installation mechanism 20] The installation mechanism 20 is a mechanism for gripping and pulling the solar cell, and more specifically, a mechanism for installing the perovskite solar cell 10, which is a sheet-like solar cell, in an unfolded state.

[0032] The installation mechanism 20 includes a gripping tool 21 that grips the perovskite solar cell 10, and a towing tool 22 that pulls the gripping tool 21 so as to spread the perovskite solar cell 10.

[0033] Specifically, as described above, the installation mechanism 20 of the first embodiment includes four gripping devices 21 that correspond to the respective corners of the perovskite solar cell 10 and are used to grip the respective corners, and four traction devices 22 that are provided for each gripping device 21 and that pull the corresponding gripping device 21 to keep the perovskite solar cell 10 in an unfolded state.

[0034] However, in the first embodiment, the installation mechanism 20 is provided with four gripping devices 21 and four towing devices 22 to make it easier to spread out and install the perovskite solar cell 10, which has a rectangular shape. However, this does not need to be limited to this, and the number of gripping devices 21 and towing devices 22 may be less than four as long as the perovskite solar cell 10 can be spread out and installed.

[0035] Furthermore, when the perovskite solar cell 10 is large, it may be easier to stably install the perovskite solar cell 10 in an unfolded state if the installation mechanism 20 has more gripping devices 21 and towing devices 22, in which case the installation mechanism 20 may have four or more gripping devices 21 and towing devices 22 (for example, five, six, or more).

[0036] Furthermore, the number of gripping tools 21 and the number of towing tools 22 do not need to be limited to the same number; for example, one corresponding towing tool 22 may be used for two gripping tools 21, or multiple corresponding towing tools 22 may be used for one gripping tool 21.

[0037] The fixing place (not shown) for fixing the towing tool 22 does not need to be particularly limited, and any place where the towing tool 22 can be fixed, such as an existing building, may be used as the fixing place. Also, a pillar or frame for fixing the towing tool 22 may be provided, and the pillar or frame may be used as a fixing location for fixing the towing tool 22.

[0038] (Gripper 21) As shown in Figures 3 to 5, the gripping tool 21 has a bifurcated gripping portion 21A having a pair of spaced-apart tip ends 21AF and one rear end B, and an adjustment portion 21B that adjusts the distance between the tip ends 21AF.

[0039] More specifically, the gripping tool 21 is formed in a bifurcated shape from the rear end B toward the tip F side, and is equipped with a gripping portion 21A having a pair of tip ends 21AF that can grip the perovskite solar cell 10 provided on the tip F side, and an adjustment portion 21B that adjusts the distance between the tip ends 21AF.

[0040] "Gripping part 21A" The gripping portion 21A comprises a pair of arm portions AM that are united at the rear end B and have their tip ends F spaced apart, and an elastic portion EL that is connected to the opposing sides of the pair of arm portions AM at the rear end B and biases the tip ends F of the pair of arm portions AM so that they are spaced a predetermined distance apart.

[0041] The gripping portion 21A also has a through hole HL (see FIG. 5) formed on the rear end B side, and a plurality of concave and convex portions 21AF1 formed on the opposing sides of each of the tip portions 21AF. The through-hole HL (see FIG. 5) is a portion for fixing the traction tool 22 (through-hole HL for the traction tool 22) which will be described later.

[0042] However, the through hole HL for the towing tool 22 means a hole that can be used when fixing the towing tool 22 to a fixed location, as described below, and it does not matter whether it can be used for another purpose.

[0043] Specifically, each of the tip portions 21AF has an uneven portion 21AF1 formed toward the tip F, the uneven portion 21AF1 having a continuous mountain-valley structure.

[0044] Furthermore, although not visible in Figures 3 to 5, the gripping portion 21A is formed at an intermediate position (a position closer to the tip F than the elastic portion EL and closer to the rear end than the tip portion 21AF) of one of the arm portions AM (the upper arm portion AM in this example), and is equipped with a through hole through which the male screw portion 21B2 of the adjustment portion 21B described below passes, and a female screw groove formed at a position corresponding to the through hole of the other arm portion AM (the lower arm portion AM in this example), into which the male screw portion 21B2 of the adjustment portion 21B described below is screwed.

[0045] "Adjustment section 21B" The adjustment portion 21B includes a head portion 21B1 having a knob that is gripped with fingers when adjusting the separation distance between the tip portions 21AF, and a male screw portion 21B2 extending from the head portion 21B1.

[0046] As described above, the through hole formed at the middle position of one of the arm portions AM (in this example, the upper arm portion AM) through which the male screw portion 21B2 of the adjustment portion 21B passes has an inner diameter larger than the outer diameter of the male screw portion 21B2.

[0047] In addition, the through hole formed at the middle position of one of the arm portions AM (in this example, the upper arm portion AM) through which the male screw portion 21B2 of the adjustment portion 21B passes has an inner diameter smaller than the outer diameter of the flange portion on the male screw portion 21B2 side of the head portion 21B1.

[0048] Therefore, when the head portion 21B1 is rotated in a direction that increases the amount of engagement of the male screw portion 21B2 of the adjustment portion 21B with the female screw groove (not shown) that is formed at a position corresponding to the through hole of the other arm portion AM (in this example, the lower arm portion AM), into which the male screw portion 21B2 of the adjustment portion 21B is screwed, the flange portion of the head portion 21B1 pushes one arm portion AM toward the other arm portion AM, and the pair of tip portions 21AF come into contact as shown in Figure 4.

[0049] Incidentally, rotating the head portion 21B1 in such a direction that the pair of tip portions 21AF come into contact with each other is hereinafter also referred to as rotating the head portion 21B1 in the closing direction.

[0050] On the other hand, if the head portion 21B1 is rotated in a direction that reduces the amount of engagement of the male screw portion 21B2 of the adjustment portion 21B, the flange portion of the head portion 21B1 moves in a direction away from the other arm portion AM, and the pair of tip portions 21AF are separated as shown in Figure 3 due to the force of the elastic portion EL that urges the pair of arm portions AM in a direction separating them.

[0051] Incidentally, rotating the head portion 21B1 in such a direction that separates the pair of tip portions 21AF will hereinafter also be referred to as rotating the head portion 21B1 in an opening direction.

[0052] (Traction tool 22) The towing tool 22 may be, for example, a string or rope, and one end of the towing tool 22 is tied to the through hole HL (see Figure 5) of the gripping portion 21A, and the gripping tool 21 is pulled in the direction of a fixing location (not shown) where the towing tool 22 is fixed so as to spread the perovskite solar cell 10, and the other end of the towing tool 22 is fixed to the fixing location (not shown).

[0053] The traction tool 22 may be an elastic rubber rope or the like, and may have hooks at one end and the other end for use in fastening.

[0054] Furthermore, instead of tying one end of the towing tool 22 to the through hole HL (see FIG. 5) of the gripping portion 21A, the towing tool 22 may be passed through the through hole HL (see FIG. 5) of the gripping portion 21A and fixed by tying one end and the other end of the towing tool 22 to a fixing location (not shown) of the towing tool 22, and how to fix the towing tool 22 may be decided according to the situation.

[0055] Next, a method for installing the solar cell unit 100 having the installation mechanism 20 of the first embodiment will be described.

[0056] As shown in FIG. 3, the description will begin with a state in which the pair of tip ends 21AF of the grip portion 21A are spaced apart. The installation method of the solar cell unit 100 having the installation mechanism 20 includes a fixing step of gripping and pulling the solar cell to fix it in a fixed location.

[0057] More specifically, the fixing step includes an attachment step of attaching a holder 21 so as to hold the sheet-shaped solar cell (in this example, a perovskite solar cell 10), and a traction and fixing step of pulling the holder 21 holding the solar cell with a towing tool 22 to spread the solar cell and fix it in a fixed location.

[0058] As described above, the gripping tool 21 of the first embodiment is formed in a bifurcated shape from the rear end B toward the tip F side, and includes a gripping portion 21A having a pair of tip ends 21AF that can grip a solar cell (in this example, a perovskite solar cell 10) provided on the tip F side, and an adjustment portion 21B that adjusts the distance between the tip ends 21AF.

[0059] Therefore, the installation step includes a placement step in which the gripping portion 21A is placed on the solar cell so that the solar cell (in this example, a perovskite solar cell 10) is positioned between the tip portions 21AF, and a gripping step in which the adjustment portion 21B is adjusted (the head portion 21B1 is rotated in the closing direction) to shorten the distance between the pair of tip portions 21AF, and the solar cell is gripped by the pair of tip portions 21AF.

[0060] Specifically, in the arrangement step, the gripping part 21A is arranged so that the corner of the solar cell (in this example, the perovskite solar cell 10) is positioned between the tip parts 21AF, and then the gripping step is performed.

[0061] More specifically, a placement step and a gripping step are performed on each corner of the solar cell (in this example, perovskite solar cell 10) so that a gripping device 21 is attached to each corner of the solar cell, and once the gripping device 21 is attached to each corner of the solar cell, the traction and fixation step described above is then performed.

[0062] If the solar cell unit 100 has the installation mechanism 20 of the first embodiment as described above, the solar cell unit 100 can be easily installed if there is a fixing location where the towing tool 22 can be fixed so as to pull the solar cells in an unfolded state.

[0063] Furthermore, the solar cell (in this example, perovskite solar cell 10) held by the gripping part 21A can be released simply by rotating the head part 21B1 of the adjustment part 21B in the opening direction. Therefore, replacement of the solar cell due to deterioration or the like can be easily carried out.

[0064] Furthermore, in the solar cell unit 100 having the installation mechanism 20 of the first embodiment, the solar cell (in this example, the perovskite solar cell 10) is held by a holding tool 21, and the holding tool 21 is pulled by a pulling tool 22 to fix it to a fixed location.

[0065] Therefore, there is no need to provide a through hole or the like to be used when fixing with the traction tool 22 in the solar cell itself (for example, in the sealing portion 12 or the like).

[0066] Therefore, damage to the sealing portion 12 and the like is unlikely to occur, and the solar cell can be installed while maintaining high water resistance (weather resistance).

[0067] In the first embodiment, the installation mechanism 20 is provided with the gripping tool 21 and the towing tool 22 as separate parts, but this does not need to be limited to the gripping part and the towing part being separate and distinct, and the gripping tool 21 and the towing tool 22 may be integrally provided (i.e., integrated).

[0068] <<Second embodiment>> Next, a solar cell unit 100 having an installation mechanism 20 according to a second embodiment of the present disclosure and a method for installing the solar cell unit 100 will be described with reference to FIGS. 6 and 7. FIG.

[0069] The second embodiment has the same basic configuration as the first embodiment, and the following mainly describes the differences from the first embodiment, and may omit a description of the similarities.

[0070] FIG. 6 is a diagram showing a state in which the solar cell unit 100 according to the second embodiment of the present disclosure is installed, and corresponds to FIG. 6 is a front view of the light-receiving surface of the perovskite solar cell 10, similar to FIG. FIG. 7 is a cross-sectional view taken along line A2-A2 in FIG. 6, and corresponds to FIG.

[0071] In the second embodiment, the solar cell is also described as a perovskite solar cell 10, but as described in the first embodiment, the solar cell does not have to be limited to a perovskite solar cell 10 and may be any sheet-shaped solar cell.

[0072] As shown in Figures 6 and 7, the perovskite solar cell 10 of the second embodiment has the same configuration as the perovskite solar cell 10 of the first embodiment, and further includes a fixing substrate 14 that is adhesively fixed to a sealing portion 12 (specifically, a back sheet 12A) located on the opposite side of the light-receiving surface.

[0073] For example, the material for the fixing base material 14 has a wider range of choices than the material used for the sealing portion 12, so that a material that is more suitable for gripping by the gripping tool 21 can be selected in terms of strength and the like.

[0074] As shown in Figure 6, the second embodiment differs from the first embodiment in that the corners of the fixing substrate 14 of the perovskite solar cell 10 are gripped by the gripping tool 21, rather than the corners of the sealing portion 12 of the perovskite solar cell 10.

[0075] The method for installing the solar cell unit 100 having the installation mechanism 20 of the second embodiment may be similar to the method for installing the solar cell unit 100 having the installation mechanism 20 of the first embodiment, and therefore description thereof will be omitted.

[0076] Even in the second embodiment described above, as in the first embodiment, the solar cell unit 100 can be easily installed if there is a fixing place where the towing tool 22 can be fixed so as to pull the solar cells in an unfolded state.

[0077] Furthermore, simply by rotating the head portion 21B1 of the adjustment portion 21B in the opening direction, the solar cell (in this example, a perovskite solar cell 10) held by the holding portion 21A can be released, making it easy to replace the solar cell due to deterioration, etc.

[0078] <<Third Embodiment>> Next, a solar cell unit 100 having an installation mechanism 20 according to a third embodiment of the present disclosure and a method for installing the solar cell unit 100 will be described with reference to FIGS. 8 and 9. FIG.

[0079] The solar cell unit 100 having the installation mechanism 20 of the third embodiment differs only in that the gripper 23 is different from the gripper 21 of the solar cell unit 100 having the installation mechanism 20 of the first embodiment.

[0080] Therefore, the following mainly describes the gripper 23 of the solar cell unit 100 having the installation mechanism 20 of the third embodiment, and descriptions of the same points as in the first embodiment may be omitted.

[0081] The solar cells of the solar cell unit 100 having the installation mechanism 20 of the third embodiment do not have to be limited to the solar cells of the first embodiment (in this example, perovskite solar cells 10), but may also be solar cells (in this example, perovskite solar cells 10) having a fixing substrate 14 adhesively fixed to the sealing portion 12 located on the opposite side of the light-receiving surface of the second embodiment.

[0082] Furthermore, the solar cell does not need to be limited to the perovskite solar cell 10 as described in the first embodiment.

[0083] FIG. 8 is a top view showing the gripping tool 23 in the released state according to the third embodiment of the present disclosure. FIG. 9 is a top view showing a gripping tool 23 in a gripping state according to a third embodiment of the present disclosure.

[0084] As shown in Figures 8 and 9, the gripping tool 23 of the third embodiment has a first piece 23A having a first tip portion 23A1 that abuts against the solar cell (not shown) when gripping, and a first extension portion 23A2 that extends from the first tip portion 23A1 toward the rear end.

[0085] The gripping tool 23 also has a second piece 23B having a second tip portion 23B1 that is located on the opposite side of the first tip portion 23A1 across the solar cell (not shown) when gripping and abuts the solar cell, and a second extension portion 23B2 that extends from the second tip portion 23B1 toward the rear end.

[0086] Although not visible, first tip portion 23A1 and second tip portion 23B1 each have a plurality of convex portions 23C provided at intervals on the surfaces facing each other.

[0087] By providing such a convex portion 23C, when the solar cell (not shown) is clamped between the first tip portion 23A1 and the second tip portion 23B1, the solar cell (not shown) can be prevented from slipping out and can be firmly gripped.

[0088] On the other hand, the second extension portion 23B2 has an arch portion 23B3 that slidably receives the first extension portion 23A2, and the first extension portion 23A2 has a biasing portion 23A3 that abuts against the inside of the arch portion 23B3 and biases the first tip portion 23A1 toward the second tip portion 23B1 when the first piece 23A is slid toward the rear end side of the second piece 23B.

[0089] First piece 23A is provided on the outer surface of first tip portion 23A1 with finger hook 23A11 on the rear end side of second piece 23B for hooking a finger when sliding first piece 23A.

[0090] As can be seen from FIG. 9, the first extending portion 23A2 and the second extending portion 23B2 are provided with an opening AP for a traction tool (not shown) on the rear end side.

[0091] With this type of gripping tool 23 of the third embodiment, the installation method is the same as that of the solar cell unit 100 of the first embodiment except for the attachment step, so below we will explain the attachment step of attaching the gripping tool 23 so as to grip the solar cell.

[0092] In the installation step of attaching the gripping tool 23, an arrangement step is performed in which the gripping tool 23 is placed on the solar cell (not shown) in the released gripping state shown in Figure 8 so that the part of the solar cell to be gripped is between the first tip 23A1 and the second tip 23B1 and is located on the second tip 23B1, and a gripping step is performed in which the first piece 23A is slid toward the rear end side of the second piece 23B to grip the solar cell (see the gripping state shown in Figure 9).

[0093] After the attachment step of attaching the gripping tool 23 according to the above-described procedure is performed, the process is the same as that described in the first embodiment, and therefore the description will be omitted.

[0094] Solar cell unit 100 having installation mechanism 20 of the third embodiment only differs from gripper 21 in the structure of gripper 23, and the same effects as those described in the first embodiment can be obtained.

[0095] <<Fourth Embodiment>> Next, a solar cell unit 100 having an installation mechanism 20 according to a fourth embodiment of the present disclosure and a method for installing the solar cell unit 100 will be described with reference to FIGS.

[0096] The solar cell unit 100 having the installation mechanism 20 of the fourth embodiment differs only in that the gripper 24 is different from the gripper 21 of the solar cell unit 100 having the installation mechanism 20 of the first embodiment.

[0097] Therefore, the following mainly describes the gripping tool 24 of the solar cell unit 100 having the installation mechanism 20 of the fourth embodiment, and descriptions of the same points as in the first embodiment may be omitted.

[0098] The solar cells of the solar cell unit 100 having the installation mechanism 20 of the fourth embodiment do not have to be limited to the solar cells of the first embodiment (in this example, perovskite solar cells 10), but may also be solar cells (in this example, perovskite solar cells 10) having a fixing substrate 14 adhesively fixed to the sealing portion 12 located on the opposite side of the light-receiving surface of the second embodiment.

[0099] Furthermore, the solar cell does not need to be limited to the perovskite solar cell 10 as described in the first embodiment.

[0100] FIG. 10 is a perspective view showing a gripping tool 24 in a released state according to a fourth embodiment of the present disclosure. FIG. 11 is a perspective view showing a gripping tool 24 in a gripping state according to a fourth embodiment of the present disclosure.

[0101] As shown in Figures 10 and 11, the gripping tool 24 of the fourth embodiment has a first piece 24A having a first tip portion 24A1 that abuts against the solar cell (not shown) when gripping, and a first extension portion 24A2 that extends from the first tip portion 24A1 toward the rear end.

[0102] The gripping tool 24 also has a second piece 24B having a second tip portion 24B1 that is located on the opposite side of the first tip portion 24A1 across the solar cell (not shown) when gripping and abuts the solar cell, and a second extension portion 24B2 that extends from the second tip portion 24B1 toward the rear end.

[0103] The first tip portion 24A1 and the second tip portion 24B1 each have a plurality of protrusions 24D provided on the surfaces facing each other and spaced apart from each other and aligned in the front-rear direction.

[0104] By providing such a convex portion 24D, when the solar cell (not shown) is clamped between the first tip portion 24A1 and the second tip portion 24B1, the solar cell (not shown) can be prevented from slipping out and can be firmly gripped.

[0105] Furthermore, the gripping tool 24 is provided with a locking piece 24C that maintains the state in which the solar cell (not shown) is gripped by the first tip portion 24A1 and the second tip portion 24B1.

[0106] The second extension portion 24B2 has a through hole 24B21 for a traction tool (not shown) provided at the rear end, and an attachment portion 24B22 provided at the tip end side of the through hole 24B21 for rotatably attaching the first extension portion 24A1 and the lock piece 24C.

[0107] The attachment portion 24B22 includes a pair of spaced apart upright pieces 24b1 and 24b2 extending from both ends of the second extending portion 24B2 toward the first extending portion 24A1 and the locking piece 24C.

[0108] The first extending portion 24A1 and the locking piece 24C located between the pair of upright leg pieces 24b1, 24b2 are rotatably attached.

[0109] With this fourth embodiment of the gripping device 24, the installation method is the same as that of the solar cell unit 100 of the first embodiment except for the attachment step, so below we will explain the attachment step of attaching the gripping device 24 so as to grip the solar cell.

[0110] The installation step of attaching the gripping tool 24 includes an arrangement step of placing the gripping tool 24 on the solar cell (not shown) in the released gripping state shown in Figure 10 so that the portion of the solar cell to be gripped is located between the first tip 23A1 and the second tip 23B1, and a gripping step of tilting the first tip 23A1 toward the second tip 23B1 and tilting the lock piece 24C toward the second tip 23B1 to grip the solar cell (see the gripping state shown in Figure 11).

[0111] After the attachment step of attaching the gripping tool 24 according to the above-described procedure is performed, the process is the same as that described in the first embodiment, and therefore the description will be omitted.

[0112] Solar cell unit 100 having installation mechanism 20 of this fourth embodiment only differs from gripper 21 in the structure of gripper 24, and can achieve the same effects as those described in the first embodiment.

[0113] The above explanation has been given based on specific embodiments, but the present disclosure is not limited to the above embodiments, and modifications and improvements to the embodiments are also included in the technical scope, which will be clear to those skilled in the art from the description of the claims. [Explanation of symbols]

[0114] 10···Perobspace solar cell, 11···Photovoltaic conversion field, 11A···Electrification section, 11A1···First electrode, 11A2···Electron transport layer, 11A3···Perobspace layer, 11A4···Positive hole transport layer, 11A5···Second electrode, 11A6···Substrate, 12···Sealing section, 12A···Backsheet, 12B···Valleysheet, 1 2C···Sealing agent, 12D···Outer material, 13···Electrical wiring connection part, 14···Fixing base material, 20···Setting mechanism, 21···Holding tool, 21A···Holding part, 21AF···Tip end, 21AF1···Concave and convex part, AM···Arm part, 21B···Adjustment part, 21B1···Head part, 21B2···Male part, 22···Traction device, 23··· • Grip, 23A···First piece, 23A1···First tip, 23A11···Finger part, 23A2···First extension part, 23A3···Second piece, 23B···Second piece, 23B1···Second tip, 23B2···Second extension part, 23B3···Arch part, 23C···Protrusion part, 24···Grip, 24A···First piece, 24A1···First tip End, 24A2··· First extension, 24B··· Second piece, 24B1··· Second tip, 24B2··· Second extension, 24B21··· Penetrating hole, 24B22··· Taking part, 24b1, 24b2··· Support piece, 24C··· Lock piece, 24D··· Protrusion, AP··· Opening, B··· Rear end, EL··· Elastic part, F··· Tip, HL··· Penetrating hole

Claims

1. A solar cell unit having an installation mechanism, The solar cell unit comprises: A solar cell and the installation mechanism for installing the solar cell; The solar cell unit, wherein the installation mechanism is a mechanism for gripping and pulling the solar cell.

2. The installation mechanism includes: a holder for holding the solar cell; The solar cell unit according to claim 1 , further comprising: a towing tool for towing the gripping tool.

3. The gripping tool is a forked gripping portion having a pair of spaced-apart front ends and one rear end; an adjustment unit that adjusts the distance between the tip ends, The gripping portion is a through hole for a towing tool formed on the rear end side; The solar cell unit according to claim 2 , further comprising a plurality of concave and convex portions formed on opposing sides of each of the tip portions.

4. The gripping tool is a first piece having a first tip portion that contacts the solar cell when gripped, and a first extension portion that extends from the first tip portion toward a rear end; a second piece having a second tip portion that is located on the opposite side of the first tip portion across the solar cell and that comes into contact with the solar cell when gripped, and a second extension portion that extends from the second tip portion toward a rear end, the second extension portion includes an arch portion that slidably receives the first extension portion; the first extending portion includes a biasing portion that contacts an inner side of the arch portion and biases the first tip portion toward the second tip portion when the first piece is slid toward the rear end side of the second piece, The solar cell unit according to claim 2 , wherein the first extension and the second extension have openings for the towing tool at rear end sides.

5. The gripping tool is a first piece having a first tip portion that contacts the solar cell when gripped, and a first extension portion that extends from the first tip portion toward a rear end; a second piece having a second tip portion that is located on the opposite side of the first tip portion across the solar cell when gripped and that abuts against the solar cell, and a second extension portion that extends from the second tip portion toward a rear end; a lock piece that maintains a state in which the solar cell is gripped by the first tip portion and the second tip portion, The second extension portion is a through hole for the towing tool provided on the rear end side; The solar cell unit according to claim 2 , further comprising: a mounting portion provided on a tip side of the through hole, the mounting portion being adapted to rotatably mount the first extension portion and the lock piece.

6. the solar cell is rectangular; The solar cell unit according to claim 2 , wherein the installation mechanism includes four or more of the gripping tools and the towing tools.

7. A method for installing a solar cell unit, comprising: The installation method includes a fixing step of gripping and pulling the solar cell to fix it to a fixed location.

8. The fixing step an attachment step of attaching a gripping tool so as to grip the solar cell; The installation method according to claim 7 , further comprising a towing and fixing step of towing the holding tool holding the solar cell with a towing tool to fix the solar cell to a fixing location.

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