Solar battery panel

Abstract

To provide a solar battery panel capable of realizing an electrical connection of a plurality of solar battery modules with a simple configuration.SOLUTION: A solar battery panel 1 is a solar battery panel 1 in which a plurality of solar battery modules 10A, 10B, and 10C are electrically connected to each other, and each of the plurality of solar battery modules 10A, 10B, and 10C includes a conductive member 15 that is laminated on and electrically connected to an electrode part provided at an end part. The plurality of solar battery modules 10A, 10B, and 10C are disposed and electrically connected so that the conductive members 15 and 15 are in contact with each other between adjacent the solar battery modules 10A, 10B, and 10C.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a solar panel. [Background technology]

[0002] Typically, a solar panel is constructed by connecting multiple solar cell modules via conductive members. For example, in the technology described in Patent Document 1, multiple solar modules are arranged so that they do not overlap in a plan view, and adjacent solar cell modules are connected by continuously arranging wiring materials, which are conductive members.

[0003] Another method for manufacturing a solar cell panel is disclosed in Patent Document 2. In the technology described in Patent Document 2, current collecting electrodes are installed at the ends of the solar cell modules when the solar cell modules are manufactured, and the ends of adjacent solar cell modules are connected by overlapping (single-linking). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-61551 [Patent Document 2] Patent Publication No. 2021-166264 Summary of the Invention [Problem to be solved by the invention]

[0005] When multiple solar cell modules are arranged so as not to overlap and connected with wiring, as in the solar cell panel described in Patent Document 1, processes such as positioning adjacent solar cell modules, positioning the connecting wiring, and bonding are required. Furthermore, when the conductive member is a bus bar, a process of fusing the solar cell module and the bus bar at multiple locations is required, and both of these processes tend to increase the number of assembly steps.

[0006] On the other hand, in the solar cell panel described in Patent Document 2, in order to overlap the ends of adjacent solar cell modules and electrically connect them, it is necessary to provide the solar cell modules with collecting electrodes for this connection and accompanying support parts, etc. Therefore, the technology described in Patent Document 2 requires additional parts such as collecting electrodes for the solar cell modules in addition to the process for connecting multiple solar cell modules.

[0007] Therefore, there is a demand for a solar cell panel that allows electrical connection of a plurality of solar cell modules with a simple configuration. [Means for solving the problem]

[0008] A characteristic configuration of the solar cell panel according to the present invention is that it is a solar cell panel formed by electrically connecting a plurality of solar cell modules, each of which has a conductive member that is laminated and electrically connected to an electrode portion provided at the end, and the plurality of solar cell modules are arranged and electrically connected such that the conductive members contact each other between adjacent solar cell modules.

[0009] According to this configuration, in the solar cell panel, the conductive members laminated on the electrode portions at the ends of the multiple solar cell modules contact each other, ensuring electrical continuity between the multiple solar cell modules. Therefore, the solar cell panel can reduce the labor required to assemble the collector electrodes and associated support components to the solar cell modules during manufacturing. Furthermore, the solar cell panel of this configuration does not require the addition of any additional components other than the conductive members. Furthermore, maintaining electrical connection between the multiple solar cell modules can be easily achieved, for example, by laminating the periphery of the conductive members. As a result, the solar cell panel can be easily manufactured by reducing the assembly labor required to electrically connect the multiple solar cell modules.

[0010] In this way, the solar cell panel according to the present invention can realize electrical connection of a plurality of solar cell modules with a simple configuration. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a schematic cross-sectional view of a solar cell module. [Figure 2] FIG. 2 is a perspective view of the solar cell module from above. [Figure 3] 1 is a cross-sectional view illustrating the power generation principle of a solar cell module. [Figure 4] FIG. 2 is a schematic diagram showing a plurality of solar cell modules. [Figure 5] FIG. 1 is a schematic diagram showing a cross-sectional side view of a solar cell module. [Figure 6] FIG. 1 is a schematic plan view of a solar cell panel during manufacturing. [Figure 7] FIG. 1 is a schematic cross-sectional side view of a solar cell panel during manufacturing. [Figure 8] FIG. 1 is a schematic cross-sectional side view of a solar cell panel. [Figure 9] FIG. 1 is a plan view of a first modified example of the first embodiment. [Figure 10] FIG. 1 is a side cross-sectional view of a first modified example of the first embodiment. [Figure 11] FIG. 10 is a plan view of a second modified example of the first embodiment. [Figure 12] FIG. 10 is a side cross-sectional view of a second modified example of the first embodiment. [Figure 13] FIG. 4 is a schematic diagram showing a solar cell module according to a second embodiment. [Figure 14] FIG. 10 is a schematic cross-sectional side view of the second embodiment during manufacturing. [Figure 15] FIG. 10 is a schematic side cross-sectional view of the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of a solar cell panel according to the present disclosure will be described in detail with reference to the drawings. Note that the embodiments described below are examples for explaining the solar cell panel, and the solar cell panel is not limited to these embodiments. Therefore, the solar cell panel according to the present disclosure can be embodied in various forms without departing from the spirit of the present disclosure.

[0013] [Basic structure of solar cell module] As shown in FIGS. 1 and 2 , a solar cell module 10 constituting a solar cell panel 1 according to this embodiment includes one or more (one in this embodiment) so-called perovskite solar cells, and is configured to include a substrate 2, a power generation layer 4 provided on the substrate 2, and the like. The substrate 2 has a transparent substrate 21 and a transparent conductive film 22. The laminate 11 includes the substrate 2, a blocking layer 3, a power generation layer 4, and a hole transport layer 5. The blocking layer 3 is provided on the transparent conductive film 22 and transfers electrons to the transparent conductive film 22, while separating the hole transport layer 5 from the transparent conductive film 22 to prevent recombination of electrons and holes (reverse electron transfer). The power generation layer 4 is provided on the blocking layer 3 and is formed by laminating a perovskite layer 44, which is excited by light and generates electrons, on a porous semiconductor 41. The hole transport layer 5 is provided on the power generation layer 4, and holes generated in the perovskite layer 44 pass through the hole transport layer 5. In the solar cell module 10, the power generation layer 4 and the hole transport layer 5 function as a power generation unit. A photoelectrode 61 that emits electrons via the transparent conductive film 22 is provided on the surface (first end 12) of the blocking layer 3, and a counter electrode 62 that receives electrons is provided on the surface of the hole transport layer 5. The counter electrode 62 is formed from the surface of the hole transport layer 5, along the side surfaces of the hole transport layer 5 and the perovskite layer 44, to the surface (second end 13) of the blocking layer 3. Hereinafter, the photoelectrode 61 and the counter electrode 62 will be collectively referred to as the electrode 6. The arrangement of the electrode 6 is not particularly limited as long as electrons can be transferred; for example, the photoelectrode 61 may be formed by connecting a conductor to the transparent conductive film 22. To enhance the durability of the solar cell module 10, the counter electrode 62 may be protected by a transparent substrate 21 or the like.

[0014] The transparent substrate 21 is made of a light-transmitting material. Examples of the transparent substrate 21 include a transparent glass substrate, a frosted semi-transparent glass substrate, and a transparent resin substrate. Examples of the transparent conductive film 22 include fluorine-doped tin oxide (FTO), tin oxide (SnO), tin-doped indium oxide (ITO), zinc oxide (ZnO), and aluminum-doped zinc oxide (AZO).

[0015] Metal oxides are suitable for the blocking layer 3 and the porous semiconductor 41, and examples thereof include titanium dioxide (TiO2), zinc oxide (ZnO), niobium oxide (Nb2O5), tin dioxide (SnO2), and aluminum oxide (Al2O3). In particular, it is preferable to use a sintered body of titanium dioxide (TiO2), which can secure a large surface area for stacking the perovskite layer 44. Furthermore, a portion of the blocking layer 3 extends into a recess 221 formed by removing a portion of the transparent conductive film 22 to form the insulating layer 31, thereby dividing the transparent conductive film 22 into two. In the blocking layer 3, electrons can move in the stacking direction, but have difficulty moving laterally, which is perpendicular to the stacking direction. Furthermore, electrons cannot move between the two transparent conductive films 22 separated by the insulating layer 31. In other words, electrons that enter the blocking layer 3 move smoothly in the stacking direction of the transparent conductive film 22 and are supplied to the photoelectrode 61, but the insulating layer 31 prevents them from moving laterally toward the counter electrode 62, so there is no short circuit between the photoelectrode 61 and the counter electrode 62.

[0016] The perovskite layer 44 is an organic-inorganic hybrid compound. Specifically, the perovskite layer 44 is produced by reacting a compound composed of lead and a halogen element X (PbX2, where X = the halogen element) with methylammonium iodide (CH3NH3I; hereinafter, sometimes abbreviated as "MAI"). Specifically, a solution containing lead and the halogen element X (e.g., a solution of PbI2 in N,N-dimethylformamide) is infiltrated into the pores of the porous semiconductor 41, dried, and then immersed in a mixed solution of MAI, whereby crystals of the perovskite compound (CH3NH3PbI3 when X = I) that forms the perovskite layer 44 are rapidly produced. The halogen element X can be iodine, bromine, chlorine, or the like, and iodine, which has high morphological stability, is preferably used. In addition, halogen element X was converted into mixed cation-mixed halide (FAPbI3) using MABr and 0.2M lead bromide (PbBr2), and FAI and lead iodide (PbI2). 1-x (MAPbBr3) x ) may be used. In this case, for example, (FAPbI3) 0.85 (MAPbBr3) 0.15 etc. can be suitably used.

[0017] Various hole transport materials can be used for the hole transport layer 5. Examples of hole transport materials include 2,2',7,7'-tetrakis(N,N'-di-p-methoxyphenylamino)-9,9'-spirobifluorene (commonly known as "spiro-OMeTAD"). In this embodiment, the hole transport layer 5 and the power generation layer 4 have approximately the same dimensions in a plan view.

[0018] The electrode 6 is made of a conductive material. The electrode 6 is formed using, for example, a metal such as gold, platinum, silver, or copper, an alloy thereof, or an oxide conductor such as FTO or indium tin oxide (ITO). The electrode 6 may be a carbon electrode, or may contain graphite, carbon black, carbon nanotubes, carbon nanofibers, carbon fibers, graphene, fullerene, or the like as a material. The electrode 6 may contain only one of the above-mentioned materials, or may contain two or more of them. The photoelectrode 61 and the counter electrode 62 may be formed using different materials.

[0019] Next, the principle of how the solar cell module 10 generates electricity will be described with reference to Figure 3. When light such as sunlight or room light enters from the transparent substrate 21 side, this incident light passes through the substrate 2 and the blocking layer 3 without being absorbed much, and most of it reaches the power generation layer 4. When the incident light that has reached the power generation layer 4 is irradiated onto the perovskite layer 44, this perovskite layer 44 absorbs the light energy and becomes excited. When this excitation raises the energy level of the perovskite layer 44 to a predetermined level higher than the conduction band potential of the metal oxide that is the porous semiconductor 41, electrons are injected from the perovskite layer 44 into the porous semiconductor 41. The injected electrons pass through the blocking layer 3 and are collected by the photoelectrode 61.

[0020] Meanwhile, holes generated in the perovskite layer 44 reach the counter electrode 62 via the hole transport layer 5, where they recombine with electrons that have passed through the external load 7. In other words, a potential gradient is generated between the photoelectrode 61 and the counter electrode 62, and power can be supplied by connecting the external load 7 between the two electrodes.

[0021] A solar cell panel 1 including a plurality of solar cell modules 10 will be described below with reference to Figures 4 to 8. The solar cell panel 1 of this embodiment is configured by connecting three solar cell modules 10A, 10B, and 10C, which are the plurality of solar cell modules 10. Note that Figures 4 to 8 schematically illustrate the solar cell modules 10A, 10B, and 10C.

[0022] As shown in Fig. 4, the solar cell modules 10A, 10B, and 10C each have a conductive member 15 at the end portions 12 and 13. Specifically, as shown in Figs. 1 to 3, the solar cell modules 10A, 10B, and 10C each have a photoelectrode 61 at the first end portion 12 and a counter electrode 62 at the second end portion 13. As shown in Fig. 4, a conductive member 15 is laminated on each of the photoelectrode 61 and the counter electrode 62. The conductive member 15 is made of various flat metal bodies, conductive tape, or the like. In this embodiment, conductive tape is used as the conductive member 15. The conductive member 15 is laminated on surfaces (end portions 12 and 13) along a pair of side portions 10a and 10a of the solar cell module 10 in a plan view of the solar cell module 10. In this embodiment, the conductive member 15 (conductive tape) is wound around and arranged around the ends 12, 13 of the solar cell module 10, and is arranged continuously on the first surface 11A of the laminate 11 (specifically, the upper surfaces of the photoelectrode 61 and the counter electrode 62 on the transparent conductive film 22), the second surface 11B opposite to the first surface 11A (specifically, the lower surface of the transparent substrate 21), and the side surface 11C between the first surface 11A and the second surface 11B (specifically, the side surface of the transparent conductive film 22 and the transparent substrate 21) (see FIG. 5). That is, as shown in FIG. 5, the conductive member 15 is assembled to the ends 12, 13 of the solar cell module 10 in a U-shape in a side cross-sectional view.

[0023] 6 and 7, the solar cell panel 1 is arranged and electrically connected such that the conductive members 15, 15 of adjacent solar cell modules 10A and 10B, and adjacent solar cell modules 10B and 10C, contact each other. In this embodiment, the solar cell modules 10A, 10B, and 10C of the solar cell panel 1 are arranged and electrically connected such that the conductive members 15, 15 overlap each other in a plan view.

[0024] In the solar cell panel 1, the positions of the solar cell modules 10A, 10B, and 10C are maintained by laminating the peripheries of the conductive members 15. Specifically, as shown in FIG. 7 , sealing material 70 is placed above and below the portions where the conductive members 15 are stacked, and the sealing material 70 is heated and melted to perform lamination around the conductive members 15 of the multiple solar cell modules 10. As a result, as shown in FIG. 8 , a solar cell panel 1 is manufactured in which the peripheries of the ends 12 and 13 where the conductive members 15 are stacked are completely covered with sealing material 70. In the solar cell panel 1 manufactured in this manner, the overlapping portions L between the conductive members 15 of adjacent solar cell modules 10A, 10B, and 10C are maintained in contact by the pressure during the lamination process and the sealing material 70 used in the lamination process. This ensures stable conduction between the adjacent solar cell modules 10A, 10B, and 10C in the solar cell panel 1.

[0025] As shown in FIGS. 2 and 4 , the solar cell module 10 has a non-power-generating region 14 in addition to the electrode portions (61, 62) on the same plane as the power-generating layer 4 and hole transport layer 5, which are the power-generating portion. The non-power-generating region 14 is located at both ends of the region between the pair of sides 10a, 10a in the solar cell module 10. In other words, the non-power-generating region 14 is located between the pair of sides 10a, 10a in a plan view and on both sides of the power-generating portion (the power-generating layer 4 and the hole transport layer 5), and is located above the pair of sides 10b, 10b. Therefore, when the conductive members 15, 15 of the solar cell panel 1 are overlapped, the non-power-generating regions 14, 14 that do not contribute to the power generation of the solar cell can be overlapped, thereby reducing the area of ​​the non-power-generating region 14 in the solar cell panel 1. As a result, the occupancy rate of the power-generating portion (the power-generating layer 4 and the hole transport layer 5) in a plan view of the solar cell panel 1 is increased, thereby improving the power generation efficiency.

[0026] [Modification 1 of the First Embodiment] 9 and 10 show a first modification of the first embodiment. As shown in FIG. 9, the solar cell panel 1 may have a configuration in which a plurality of solar cell modules 10 are arranged in two directions (X direction and Y direction) that are orthogonal to each other in a plan view. In FIG. 9, the horizontal direction of the solar cell panel 1 is defined as the "X direction" and the vertical direction is defined as the "Y direction." FIG. 9 shows the solar cell panel 1 in which three solar cell modules 10 are arranged in each of the X direction and the Y direction. In the solar cell panel 1 of FIG. 9, the groups of solar cell modules 10 in the X direction are defined as column (1), column (2), and column (3) in order from top to bottom in the Y direction.

[0027] In Modification 1, solar cell modules 10A1, 10B1, and 10C1 in column (1) and solar cell modules 10A3, 10B3, and 10C3 in column (3) have the same configuration as in the first embodiment. Solar cell module 10A2 in column (2) has overlapping portions L between the conductive members 15 and solar cell modules 10A1 and 10A3 in columns (1) and (3). Solar cell module 10C2 in column (2) has overlapping portions L between the conductive members 15 and solar cell modules 10C1 and 10C3 in columns (1) and (3). Meanwhile, solar cell module 10B2 in column (2) is spaced apart from solar cell modules 10B1 and 10B3 in columns (1) and (3).

[0028] In this way, solar cell modules 10A1-10C2 in columns (1) and (2) and solar cell modules 10A2-10C3 in columns (2) and (3) are electrically connected to each other in solar cell panel 1. Although not shown, in solar cell panel 1 of Modification 1, the positions of the respective modules are maintained by laminating the periphery of conductive member 15.

[0029] [Modification 2 of the First Embodiment] 11 and 12 show Modification 2 of the first embodiment. As shown in FIG. 11, the solar cell panel 1 of Modification 2 also includes three solar cell modules 10 in each of the X and Y directions. However, in Modification 2, the shape of each solar cell module 10 differs from that of Modification 1. Specifically, each solar cell module 10 of Modification 2 is arranged with the conductive member 15 wrapped around the entire circumference of the end portions 12 and 13. That is, the conductive member 15 is attached to the end portion of the solar cell module 10 in a square shape in a side cross-sectional view. Furthermore, the shape of solar cell module 10B2 in row (2) differs from that of Modification 1. Specifically, solar cell module 10B2 has a shorter length in the X direction than adjacent solar cell modules 10B1 and 10B3. In addition, the solar cell modules 10 in row (2) are connected in a different manner from the solar cell modules 10 in rows (1) and (3). 11 and 12, in Modification 2, solar cell module 10A2 in row (2) is disposed below solar cell modules 10A1 and 10A3 in rows (1) and (3), with their conductive members 15, 15 overlapping. Solar cell module 10C2 in row (2) is also disposed below solar cell modules 10C1 and 10C3 in rows (1) and (3), with their conductive members 15, 15 overlapping. Meanwhile, solar cell module 10B2 in row (2) is disposed above solar cell modules 10B1 and 10B3 in rows (1) and (3), with their conductive members 15, 15 overlapping.

[0030] 12, the solar cell panel 1 of Modification 2 has two solar cell modules 10 arranged one above the other, allowing for a compact configuration of the solar cell panel 1. Although not shown, in the solar cell panel 1 of Modification 2 as well, the positions of the multiple solar cell modules 10 are maintained by laminating the periphery of the conductive member 15.

[0031] Second Embodiment 13 to 15 show the second embodiment. In the solar cell panel 1 of the second embodiment, the solar cell modules 10A to 10C also have conductive members 15 at the ends 12, 13, respectively. However, as shown in FIGS. 13 to 15, this differs from the first embodiment in that the conductive members 15 are laminated on only one surface of the solar cell module 10. The other configurations are the same as those of the first embodiment.

[0032] 13, the conductive member 15 is laminated on the surface portions (end portions 12, 13) along the pair of side portions 10a, 10a of the solar cell module 10 in a plan view of the solar cell module 10. As shown in Fig. 14, the conductive member 15 is laminated on only one surface (the first surface 11A or the second surface 12A) of the end portions 12, 13 of the solar cell module 10. The solar cell panel 1 is arranged such that the conductive members 15, 15 laminated on the first surface 11A and the second surface 11B of adjacent solar cell modules 10A, 10B, 10C that face each other in a side view and a plan view overlap with each other and are electrically connected.

[0033] In the solar cell panel 1 of the second embodiment, the positions of the solar cell modules 10A, 10B, and 10C are maintained by laminating the peripheries of the conductive members 15. Specifically, as shown in FIG. 14 , sealing material 70 is disposed above and below the portions where the conductive members 15 are stacked, and the sealing material 70 is heated and melted to perform lamination around the conductive members 15 of the multiple solar cell modules 10. As a result, as shown in FIG. 15 , a solar cell panel 1 is manufactured in which the peripheries of the ends 12 and 13 where the conductive members 15 are stacked are completely covered with the sealing material 70. In the solar cell panel 1 manufactured in this manner, the overlapping portions L between the conductive members 15 of adjacent solar cell modules 10A, 10B, and 10C are maintained in contact with each other by the pressure during the lamination process and the sealing material 70 used in the lamination process. As a result, in the solar cell panel 1 of the second embodiment, electrical continuity between adjacent solar cell modules 10A, 10B, and 10C is stably ensured.

[0034] [Another embodiment] The present invention may be configured as follows in addition to the above-described embodiments (common numbers and symbols are used to designate components having the same functions as those in the embodiments).

[0035] (a) In the above-described first embodiment and variant 1 of the first embodiment, examples have been shown in which the conductive members 15 are arranged in a U-shape at the ends 12, 13 of the solar cell module 10, but as in variant 2 of the first embodiment, the conductive members 15 may be stacked around the entire periphery of the ends 12, 13.

[0036] (b) In the above-described first embodiment and variant 1 of the first embodiment, examples have been shown in which the solar cell modules 10A, 10B, and 10C are arranged so that the conductive members 15, 15 overlap each other in a planar view. However, as in variant 2 of the first embodiment, the solar cell modules 10A, 10B, and 10C may be electrically connected by bringing the conductive members 15, 15 stacked on the side surface 11C into contact with each other.

[0037] (c) In the above-described first and second modifications of the first embodiment, an example was shown in which the solar cell panel 1 has a plurality of solar cell modules 10 in the X and Y directions, which are orthogonal to each other in a plan view. The second embodiment may also be configured to have a plurality of solar cell modules 10 in the X and Y directions, as in the first and second modifications of the first embodiment. Furthermore, when the solar cell panel 1 has a plurality of solar cell modules 10 in the X and Y directions, a configuration in which the conductive members 15, 15 overlap each other in a plan view and a configuration in which the conductive members 15, 15 stacked on the side surfaces are in contact with each other may be used in combination, or only one of these configurations may be used.

[0038] (d) The conductive member 15 may have adhesive properties on both sides.

[0039] In the above-described embodiment, the following configurations are envisioned. <1> The solar cell panel (1) is a solar cell panel (1) configured by electrically connecting a plurality of solar cell modules (10), each of which has a conductive member (15) stacked on and electrically connected to electrode portions (61, 62) provided at the ends (12, 13), and the plurality of solar cell modules (10) are arranged and electrically connected between adjacent solar cell modules (10) such that the conductive members (15, 15) are in contact with each other.

[0040] According to this configuration, the solar cell panel (1) has the conductive members (15, 15) stacked on the electrode portions (61, 62) of the multiple solar cell modules (10) in contact with each other. This allows the multiple solar cell modules (10) to be easily electrically connected by the conductive members (15). As a result, the solar cell panel (1) can be manufactured with reduced assembly steps for electrically connecting the multiple solar cell modules (10). Specifically, the manufacturing process of the solar cell panel (1) can be omitted, which is required when bus bars are used as conductive members. Furthermore, in the solar cell panel (1) of this embodiment, electrical connectivity between the multiple solar cell modules (10) can be ensured, for example, by pressure applied during lamination toward the contact portions (e.g., overlapping portions L) between the conductive members (15, 15) and the holding force of the sealing material 70 used in the lamination process, without adding any additional components other than the conductive members (15).

[0041] <2> <1> In the solar cell panel (1), the plurality of solar cell modules (10) are preferably arranged so that the conductive members (15, 15) overlap each other in a plan view and are electrically connected to each other.

[0042] According to this configuration, the solar cell panel (1) electrically connects the conductive members (15, 15) of adjacent solar cell modules (10) by overlapping them when viewed in a plane, thereby ensuring reliable conduction between the multiple solar cell modules (10).

[0043] <3> <2> In the solar cell panel (1), it is preferable that at least one of the plurality of solar cell modules (10) has a conductive member (15) laminated only on the opposing surface (either the first surface 11A or the second surface 11B) of the adjacent solar cell module (10).

[0044] According to this configuration, the conductive members 15 can be reduced to a necessary minimum in the solar cell panel 1. This makes it easier to assemble the conductive members 15 to the solar cell modules 10 of the solar cell panel 1, and also allows the solar cell panel 1 to be made smaller.

[0045] <4> <1> ~ <3> In the solar cell panel (1), it is preferable that the conductive members (15) of the plurality of solar cell modules (10) are arranged in an area other than the power generation sections (4, 5) of the solar cell modules (10) in a plan view.

[0046] With this configuration, when the conductive members (15, 15) are overlapped with each other, the non-power generating regions (14, 14) that do not contribute to the power generation of the solar cells can be overlapped with each other, thereby reducing the area of ​​the non-power generating regions (14) in the solar cell panel (1). As a result, the occupancy rate of the power generating sections (4, 5) in the solar cell panel (1) in a plan view is increased, thereby improving the power generation efficiency. [Industrial Applicability]

[0047] The present invention is widely applicable to solar panels. [Explanation of symbols]

[0048] 1: solar cell panel, 4: power generation layer (power generation section), 5: hole transport section (power generation section), 10: solar cell module, 12: first end (end section), 13: second end (end section), 15: conductive member, 61: photoelectrode (electrode section), 62: counter electrode (electrode section), 70: sealing material, L: overlapping section

Claims

1. A solar cell panel configured by electrically connecting a plurality of solar cell modules, Each of the plurality of solar cell modules has a conductive member laminated on and electrically connected to an electrode portion provided at an end portion thereof, The solar cell panel, wherein the plurality of solar cell modules are arranged so that the conductive members are in contact with each other and are electrically connected.

2. The solar cell panel according to claim 1 , wherein the plurality of solar cell modules are arranged and electrically connected such that the conductive members overlap each other in a plan view.

3. The solar cell panel according to claim 2 , wherein in at least one of the plurality of solar cell modules, the conductive member is stacked only on the opposing surface of the adjacent solar cell module.

4. The solar cell panel according to any one of claims 1 to 3, wherein the conductive member is stacked in a region of the plurality of solar cell modules other than a power generation portion of the solar cell module in a plan view.

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