Solar battery module

Abstract

To suppress a decrease in a power generation amount due to an increase in the degree of freedom of a shape of a plurality of cells as a whole.SOLUTION: A solar battery module 11 includes a plurality of cells 12 arranged side by side and electrically connected to each other. The plurality of cells 12 include: a plurality of small cells 30 that are connected in parallel with each other to form a parallel circuit; and a large cell 20 that is connected in series with the parallel circuit and has a larger light receiving area than the plurality of small cells 30. The large cell 20 has two electrodes 22 and 23. A first small cell 31 has two electrodes 32 and 33. A second small cell 41 has two electrodes 42 and 43. Electrical resistance values R1, R2, and R3 are set such that a value of a current flowing through the large cell 20 is larger than that in the case where the plurality of small cells 30 and the large cell 20 are connected in series.SELECTED DRAWING: Figure 3

Description

[Technical Field]

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

[0002] Patent Document 1 describes a solar viewing device. The solar viewing device described in Patent Document 1 includes a substrate, and a solar power generation unit and a light emission unit fixed on the substrate. The solar power generation unit is composed of a plurality of small cells. The plurality of small cells are electrically connected to each other.

[0003] Furthermore, in a conventional solar cell module configured by electrically connecting multiple cells to each other, there is a case where rectangular cells having the same shape and size are arranged adjacent to each other in the width direction of the cells, and these cells are electrically connected to each other in series. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2006 / 070724 Summary of the Invention [Problem to be solved by the invention]

[0005] For example, there are solar cell modules that are placed on the outer surface of clothing. If such a solar cell module is converted into the latter type described above, multiple cells are arranged in a rectangular shape as a whole. This limits the degree of freedom in the shape of the solar cell module, i.e., the degree of freedom in design.

[0006] To address this issue, it is conceivable to arrange the cells of a solar cell module in a circular shape as a whole, or to arrange the cells in different shapes and sizes. However, in this case, the current that can be extracted from the solar cell module is the current that can be extracted from the cell with the smallest light-receiving area among the cells. As a result, there is a problem in that the current that can be extracted from the solar cell module is limited.

[0007] This problem is not limited to solar cell modules placed on the outer surface of clothing, but also occurs in other solar cell modules. [Means for solving the problem]

[0008] Various aspects of the solar cell module for solving the above problems will be described below. [Aspect 1] 1. A solar cell module comprising a plurality of cells arranged side by side and electrically connected to each other, wherein the plurality of cells include a plurality of small cells connected in parallel to each other to form a parallel circuit, and a large cell connected in series to the parallel circuit and having a larger light-receiving area than the plurality of small cells, wherein the cells have two electrodes, and the electrical resistance value between the two electrodes of each of the plurality of small cells and the large cell is set so that the value of the current flowing through the large cell is larger than when the plurality of small cells and the large cell are connected in series.

[0009] According to the above configuration, a parallel circuit is formed by connecting multiple small cells in parallel. Therefore, the current value that can be extracted from the parallel circuit is the sum of the current values that can be extracted from each small cell. Furthermore, by setting the electrical resistance between the two electrodes of each of the multiple small cells and the large cell to satisfy the above relationship, the current value flowing through the large cell is larger than when the multiple small cells and the large cell are connected in series. As a result, even if the electrical resistance values, i.e., sizes and shapes, of the multiple cells arranged side by side are different from each other, a larger current can be extracted than when the multiple cells are connected in series. Therefore, a decrease in power generation amount due to increased flexibility in the overall shape of the multiple cells can be suppressed.

[0010] [Aspect 2] A solar cell module according to [Aspect 1], wherein when a direction perpendicular to both the arrangement direction of the plurality of cells and the thickness direction of the cells is defined as the orthogonal direction, each of the cells has an elongated shape with respect to the orthogonal direction, is adjacent to other cells, and has an edge extending along the orthogonal direction, and the electrode is provided on the edge.

[0011] According to the above configuration, each cell has a shape that is elongated in the orthogonal direction, and each cell is adjacent to other cells and has edges that extend along the orthogonal direction, so that the spacing between cells can be reduced. This makes it easier to see the multiple cells as a single unit, thereby improving the design of the solar cell module.

[0012] Furthermore, with the above configuration, since the electrodes are provided at the edges, the electrical resistance of each cell is smaller than when the electrodes are provided at one or the other of the orthogonal ends, and a larger current can be extracted. Therefore, it is possible to effectively prevent a decrease in power generation amount due to the increased flexibility in the overall shape of the multiple cells.

[0013] [Aspect 3] The solar cell module according to [Aspect 1] or [Aspect 2], wherein each of the cells is a perovskite cell.

[0014] According to the above configuration, each cell is flexible, which makes it easier to attach the cells to the surface of an attachment object such as clothing, the shape of which is easily deformed. [Effects of the Invention]

[0015] According to the present invention, it is possible to suppress a decrease in the amount of power generation caused by increasing the degree of freedom in the overall shape of a plurality of cells. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a front view showing a garment to which a solar cell module according to the first embodiment is attached. [Figure 2] FIG. 2 is a front view showing the solar cell module of FIG. [Figure 3] FIG. 3 is a front view showing the electrical configuration of the plurality of cells shown in FIG. [Figure 4] FIG. 4 is a schematic diagram showing an equivalent circuit of a plurality of cells of FIG. [Figure 5] FIG. 5 is a front view showing a solar cell module according to the second embodiment. [Figure 6] FIG. 6 is a schematic diagram showing an equivalent circuit of a plurality of cells of FIG. [Figure 7] FIG. 7 is a front view showing a solar cell module according to a third embodiment. [Figure 8] FIG. 8 is a schematic diagram showing an equivalent circuit of a plurality of cells of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0017] First Embodiment A first embodiment of the solar cell module will be described below with reference to FIGS. As shown by the two-dot chain line in FIG. 1, in this embodiment, the solar cell module 11 is embodied as being attached to the surface of clothing 10.

[0018] <Solar cell module 11> As shown in FIGS. 2 and 3, the solar cell module 11 includes a plurality of cells 12 arranged side by side and electrically connected to each other.

[0019] The multiple cells 12 are strip-shaped and lined up next to each other in the left-right direction (left-right direction in FIGS. 2 and 3) of the garment 10. In this embodiment, five cells 12 are lined up. The plurality of cells 12 as a whole form an integrally shaped solar cell module 11. In this embodiment, the plurality of cells 12 as a whole form the solar cell module 11 having a circular shape when viewed from the front.

[0020] In the following description, the direction in which the cells 12 are arranged will be simply referred to as the arrangement direction W, and the direction perpendicular to both the arrangement direction W and the thickness direction of the cells 12 will be referred to as the perpendicular direction L. Each of the cells 12 has a shape that is elongated in the orthogonal direction L. That is, the length of the cell 12 in the orthogonal direction L is longer than the length of the cell 12 in the arrangement direction W.

[0021] Each of the cells 12 is a perovskite cell 12. As shown in FIG. 2, the surfaces of the plurality of cells 12 are light-receiving surfaces 13 . The plurality of cells 12 includes a large cell 20 and a plurality of small cells 30 each having a light receiving surface 13 with a smaller area (hereinafter referred to as a light receiving area S) than the large cell 20 .

[0022] <Large Cell 20> As shown in FIG. 3, the large cell 20 is located at the center of the five cells 12 in the arrangement direction W.

[0023] Each large cell 20 has a pair of edges 24 on both sides in the alignment direction W. The pair of edges 24 are adjacent to other cells 12 in the alignment direction W and extend along the orthogonal direction L.

[0024] Two electrodes 22, 23 are provided on the back surface 20b of the large cell 20. The two electrodes 22, 23 are provided on a pair of edges 24, respectively. The electrode 22 provided on one edge 24 (the left side in FIG. 3) is a negative electrode. The electrode 23 provided on the other edge 24 (the right side in FIG. 3) is a positive electrode.

[0025] <Small cell 30> As shown in Figure 3, the small cell 30 has two first small cells 31 located on both sides of the large cell 20 in the arrangement direction W, and two second small cells 41 located on the opposite side of the large cell 20 from the two first small cells 31.

[0026] The two first small cells 31 and the two second small cells 41 have symmetrical shapes in the arrangement direction W. Therefore, by describing the first small cells 31 and second small cells 41 on one side (the left side in FIG. 3), a description of the first small cells 31 and second small cells 41 on the other side (the right side in FIG. 3) may be omitted.

[0027] The first small cells 31 have edges 34 on both sides in the arrangement direction W. Each edge 34 is adjacent to another cell 12 in the arrangement direction W and extends along the orthogonal direction L.

[0028] Two electrodes 32 and 33 are provided on the back surface 31b of the first small cell 31. In this embodiment, the electrode 32 is a negative electrode, and the electrode 33 is a positive electrode. The two electrodes 32 and 33 are provided on two edges 34, respectively. The electrode 32 of one first small cell 31 (left side in FIG. 3) is provided on the edge 34a opposite the large cell 20. The electrode 33 of one first small cell 31 (left side in FIG. 3) is provided on the edge 34b on the large cell 20 side. The electrode 32 of the other first small cell 31 (right side in FIG. 3) is provided on the edge 34b on the large cell 20 side. The electrode 33 of the other first small cell 31 (right side in FIG. 3) is provided on the edge 34a opposite the large cell 20.

[0029] The second small cell 41 has a first edge 44 and a second edge 45 . The first edge 44 is adjacent to the first small cell 31 and extends along the orthogonal direction L.

[0030] The second edge 45 has an arc shape, connects both ends of the first edge 44 in the orthogonal direction L, and extends on the opposite side from the adjacent first small cell 31. Two electrodes 42, 43 are provided on the back surface 41b of the second small cell 41. In this embodiment, the electrode 42 is a negative electrode, and the electrode 43 is a positive electrode. The electrode 42 of one second small cell 41 (left side in FIG. 3) is provided on the second edge 45. The electrode 43 of one second small cell 41 (left side in FIG. 3) is provided on the first edge 44. The electrode 42 of the other second small cell 41 (right side in FIG. 3) is provided on the first edge 44. The electrode 43 of the other second small cell 41 (right side in FIG. 3) is provided on the second edge 45.

[0031] 3 and 4, the first small cell 31 and the second small cell 41 are connected in parallel to each other to form a parallel circuit. Furthermore, the parallel circuit formed by the first small cell 31 and the second small cell 41 is connected in series to the large cell 20. As shown in FIG. 3, in this embodiment, the electrode 32 of one (left side of FIG. 3) first small cell 31 is electrically connected to the electrode 42 of one (left side of FIG. 3) second small cell 41. Furthermore, the electrode 33 of one (left side of FIG. 3) first small cell 31 and the electrode 43 of one (left side of FIG. 3) second small cell 41 are electrically connected to the electrode 22 of the large cell 20. Furthermore, the electrode 32 of the other (right side of FIG. 3) first small cell 31 and the electrode 42 of the other (right side of FIG. 3) second small cell 41 are electrically connected to the electrode 23 of the large cell 20. Also, the electrode 33 of the first small cell 31 on the other side (right side in FIG. 3) and the electrode 43 of the second small cell 41 on the other side (right side in FIG. 3) are electrically connected.

[0032] The sum of the light receiving area S2 of the first small cell 31 and the light receiving area S3 of the second small cell 41 is equal to the light receiving area S1 of the large cell 20 (S1=S2+S3). The length L2 of the first small cells 31 in the orthogonal direction L and the length L3 of the second small cells 41 in the orthogonal direction L are smaller than the length L1 of the large cells 20 in the orthogonal direction L (L1>L2, L3).

[0033] Furthermore, the longest width W1 of the first small cells 31 in the arrangement direction W is equal to the longest width W2 of the second small cells 41 in the arrangement direction W (W1=W2). The electrical resistance value R1 between the two electrodes 22, 23 of the large cell 20, the electrical resistance value R2 between the two electrodes 32, 33 of the first small cell 31, and the electrical resistance value R3 between the two electrodes 42, 43 of the second small cell 41 are set as follows: That is, the electrical resistance values R1, R2, and R3 are set so that the value of the current flowing through the large cell 20 is larger than when multiple small cells 30 and large cells 20 are connected in series.

[0034] <Operation of this embodiment> As shown in Fig. 4, a parallel circuit is formed by connecting the first small cell 31 and the second small cell 41 in parallel. Therefore, the current that can be extracted from the parallel circuit is the sum of the currents that can be extracted from each of the small cells 31, 41. Furthermore, by setting the electrical resistances R1, R2, and R3 to satisfy the above relationship, the current that flows through the large cell 20 is larger than when the first small cell 31, the second small cell 41, and the large cell 20 are connected in series. For these reasons, even if the electrical resistances R1, R2, and R3 of the multiple cells 12 arranged side by side, i.e., the sizes and shapes, are different from one another, a larger current can be extracted than when the multiple cells 12 are connected in series.

[0035] <Effects of this embodiment> (1-1) The electrical resistance values R1, R2, and R3 are set so that the value of the current flowing through the large cell 20 is larger than when the first small cell 31, the second small cell 41, and the large cell 20 are connected in series.

[0036] With this configuration, the above-mentioned effects are achieved, and it is possible to suppress a decrease in the amount of power generation caused by increasing the degree of freedom in the shape of the plurality of cells 12 as a whole. (1-2) The large cell 20, the first small cell 31, and the second small cell 41 have a shape that is elongated in the orthogonal direction L, and each have a pair of edges 24, two edges 34, and a first edge 44 that are adjacent to other cells 12 and extend along the orthogonal direction L. The electrodes 22 and 23 are provided on the pair of edges 24, respectively. The electrodes 32 and 33 are provided on the two edges 34, respectively. The electrodes 42 and 43 are provided on the first edge 44 and the second edge 45, respectively.

[0037] According to this configuration, each of the cells 20, 31, 41 has a shape that is long in the orthogonal direction L, and has edges 24, 34, 44 that are adjacent to other cells 12 and extend along the orthogonal direction L, so that it is possible to reduce the intervals between the cells 20, 31, 41. This makes it easier to visually recognize the plurality of cells 12 as a single unit, thereby improving the design of the solar cell module 11.

[0038] Furthermore, according to the above configuration, the electrodes 22, 23, the electrodes 32, 33, and the electrodes 42, 43 are provided on the edge 24, the edge 34, the second edge 45, and the first edge 44, respectively. Therefore, the electrical resistance values R1, R2, and R3 of the cells 20, 31, and 41 are smaller than when the electrodes are provided on one end or the other end of each cell 20, 31, and 41 in the orthogonal direction L. This allows a large current to be extracted from each cell 12. Therefore, it is possible to effectively prevent a decrease in the amount of power generation due to an increase in the degree of freedom in the overall shape of the multiple cells 12.

[0039] (1-3) Each of the cells 12 is a perovskite-type cell 12. According to this configuration, each cell 12 has flexibility, and therefore the cells 12 can be easily attached to the surface of an attachment target such as clothing 10, the shape of which is easily deformed.

[0040] Second Embodiment Next, a second embodiment of the solar cell module will be described with reference to FIGS.

[0041] In the following, for configurations of the second embodiment that are identical to or correspond to the configurations of the first embodiment, duplicate explanations may be omitted by adding the symbol "1**", which is the symbol "**" of the configurations of the first embodiment plus "100".

[0042] As shown in FIG. 5, in this embodiment, a plurality of cells 112 form a solar cell module 111 that is annular as a whole when viewed from the front. The plurality of cells 112 includes a pair of small cells 130 , two large cells 120 , and two end cells 140 .

[0043] <Small Cell 130> The pair of small cells 130 are positioned at the center in the arrangement direction W, and are arranged apart from each other in the perpendicular direction L.

[0044] The pair of small cells 130 have a pair of edges 134 on both sides in the alignment direction W. Each of the edges 134 is adjacent to another cell 112 in the alignment direction W and extends along the orthogonal direction L.

[0045] Electrodes 132 and 133 are provided on the pair of edges 134, respectively. The two large cells 120 and the two end cells 140 have symmetrical shapes in the arrangement direction W. Therefore, by describing the large cells 120 and end cells 140 on one side (the left side in FIG. 5), a description of the large cells 120 and end cells 140 on the other side (the right side in FIG. 5) may be omitted.

[0046] <Large cell 120> The two large cells 120 are arranged adjacent to each other on both sides of the two small cells 130 in the arrangement direction W.

[0047] The large cell 120 has a first edge 124 and a second edge 125 extending in the perpendicular direction L on both sides in the arrangement direction W. The first edge 124 is located on the small cell 130 side in the arrangement direction W.

[0048] The first edge 124 has a pair of first portions 126 that are adjacent to the pair of small cells 130 and extend along the orthogonal direction L, and a second portion 127 that connects the inner ends of the pair of first portions 126 in the orthogonal direction L. The second portions 127 are recessed toward the inside of the large cells 120 in the arrangement direction W.

[0049] The second edge 125 is located on the opposite side of the small cell 130 in the arrangement direction W, and extends along the orthogonal direction L. An electrode 122 is provided on a second edge 125 of one large cell 120 (left side in FIG. 5). An electrode 123 is provided on a pair of first portions 126 of one large cell 120 (left side in FIG. 5). An electrode 122 is provided on a pair of first portions 126 of the other large cell 120 (right side in FIG. 5). An electrode 123 is provided on a second edge 125 of the other large cell 120 (right side in FIG. 5).

[0050] <End cell 140> The two end cells 140 have a first edge 144 and a second edge 145 . The first edge 144 is adjacent to the large cell 120 and extends along the orthogonal direction L.

[0051] The second edge 145 has an arc shape, connects both ends of the first edge 144 in the orthogonal direction L, and extends in the opposite direction from the adjacent large cell 120. Two electrodes 142 and 143 are provided on a rear surface 141 of the end cell 140. In this embodiment, the electrode 142 is a negative electrode, and the electrode 143 is a positive electrode.

[0052] The electrode 142 of the end cell 140 on one side (the left side in FIG. 5) is provided on the second edge 145. The electrode 143 of the end cell 140 on one side (the left side in FIG. 5) is provided on the first edge 144.

[0053] Also, the electrode 142 of the end cell 140 on the other side (the right side in FIG. 5) is provided on the first edge 144. The electrode 143 of the end cell 140 on the other side (the right side in FIG. 5) is provided on the second edge 145.

[0054] As shown in FIGS. 5 and 6, the two small cells 130 are connected in parallel with each other to form a parallel circuit. In the parallel circuit formed by the small cells 130, two large cells 120 are respectively connected in series. Two end cells 140 are respectively connected in series to the two large cells 120. As shown in FIG. 5, in this embodiment, the electrode 143 of the end cell 140 on one side (the right side in FIG. 5) is electrically connected to the electrode 122 of the large cell 120 on one side (the left side in FIG. 5). Also, the electrodes 132 of the pair of small cells 130 are respectively connected to the electrode 123 of the large cell 120 on one side (the left side in FIG. 5). Also, the electrodes 133 of the pair of small cells 130 are respectively connected to the electrode 122 of the large cell 120 on the other side (the right side in FIG. �). Also, the electrode 123 of the large cell 120 on the other side (the right side in FIG. 5) is electrically connected to the electrode 142 of the end cell 140 on the other side (the right side in FIG. 5).

[0055] The light-receiving area S21 of the large cell 120 is larger than the light-receiving area S22 of each small cell 130 (S21 > S22). The light-receiving area S21 of the large cell 120 is equal to the light-receiving area S23 of the end cell 140 (S21 = S23). The sum of the light-receiving areas S22 of the two small cells 130 is equal to the light-receiving area S21 of the large cell 120 and the light-receiving area S23 of the end cell 140 (S22 × 2 = S21, S23).

[0056] The length L21 of the large cell 120 in the orthogonal direction L and the length L23 of the end cell 140 in the orthogonal direction L are larger than the length L22 of the small cell 130 in the orthogonal direction L (L22 < L21, L23). The lengths W22 of the pair of small cells 130 in the arrangement direction W are equal.

[0057] The electrical resistance value R1 of the large cell 120, the electrical resistance value R2 of the small cell 130, and the electrical resistance value R3 of the end cell 140 are set as follows: That is, the electrical resistance values R1, R2, and R3 are set so that the current value flowing through the large cell 120 and the end cell 140 is larger than when multiple small cells 130, multiple large cells 120, and multiple end cells 140 are connected in series.

[0058] <Effects of the Second Embodiment> According to this embodiment, it is possible to achieve the same effects as the effects (1-1) to (1-3) of the first embodiment.

[0059] <Third embodiment> Next, a third embodiment of the solar cell module will be described with reference to FIGS.

[0060] In the following, for configurations of the third embodiment that are the same as or correspond to those of the first embodiment, duplicate explanations may be omitted by adding the symbol "2**", which is the symbol "**" of the configuration of the first embodiment plus "200".

[0061] As shown in FIG. 7, in this embodiment, a plurality of cells 212 form a solar cell module 211 that is shaped as a square frame when viewed from the front as a whole. The plurality of cells 212 includes two large cells 220 spaced apart in the alignment direction W, and a plurality of small cells 230 respectively provided between one end and the other end of the two large cells 220 in the perpendicular direction L.

[0062] <Large Cell 220> The large cells 220 have a rectangular shape when viewed from the front, and have short sides 225 extending along the arrangement direction W and long sides 224 extending along the perpendicular direction L.

[0063] Electrodes 222 and 223 are provided on the pair of long sides 224, respectively. <Small Cell 230> Each of the small cells 230 has a rectangular shape in a front view, and has a pair of short sides 235 extending along the arrangement direction W and a pair of long sides 234 extending along the perpendicular direction L.

[0064] Between one ends of the two large cells 220 in the orthogonal direction L, three small cells 230 are arranged adjacent to each other in the arrangement direction W. Furthermore, between the other ends of the two large cells 220 in the orthogonal direction L, three small cells 230 are arranged adjacent to each other in the arrangement direction W.

[0065] The small cells 230 have a symmetrical shape in the orthogonal direction L. Electrodes 232 and 233 are provided on the pair of long sides 234, respectively. Of the three small cells 230, the long sides 234 of the small cells 230 located at both ends in the arrangement direction W are adjacent to the long sides 224 of the large cells 220, respectively.

[0066] In this embodiment, the long sides 224 of the large cells 220 and the long sides 234 of the small cells 230 correspond to the edges of the present invention. 7 and 8, three small cells 230 provided between one end and the other end of two large cells 220 in the orthogonal direction L are connected in parallel to each other to form a parallel circuit. Each of the parallel circuits formed by the small cells 230 is connected in series to the two large cells 220. As shown in FIG. 7, in this embodiment, the electrodes 232 of six small cells 230 are electrically connected to the electrode 223 of one large cell 220 (left side in FIG. 7). In addition, the electrodes 233 of the six small cells 230 are electrically connected to the electrode 222 of the other large cell 220 (right side in FIG. 7).

[0067] The six small cells 230 have the same shape. The length L32 of the small cells 230 in the orthogonal direction L is smaller than the length L31 of the large cells 220 in the orthogonal direction L (L31>L32).

[0068] The light receiving area S32 of the small cell 230 is smaller than the light receiving area S31 of the large cell 220 (S31>S32). The sum of the light-receiving areas S32 of the six small cells 230 is equal to the light-receiving area S31 of the large cell 220 (S32×6=S31).

[0069] The electrical resistance value R1 of the large cell 220 and the electrical resistance value R2 of the small cell 31 are set so that the current value flowing through the large cell 220 is larger than when a plurality of small cells 230 and large cells 220 are connected in series.

[0070] <Effects of the Third Embodiment> According to this embodiment, it is possible to achieve the same effects as the effects (1-1) to (1-3) of the first embodiment.

[0071] <Example of change> This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0072] In the above-described embodiments, the perovskite type cells 12, 112, 212 are used as the cells 12, 112, 212, but silicon type cells 12, 112, 212 may also be used.

[0073] In the above embodiments, each of the cells 12, 112, 212 has an edge 24, 34, 44, 124, 134, 144, 224, 234 that is adjacent to the other cells 12, 112, 212 and extends along the orthogonal direction L. However, this is not limiting. The edge adjacent to another cell may be curved relative to the edge of the adjacent cell, for example.

[0074] In the above embodiment, each of the cells 12, 112, 212 has a shape that is elongated in the orthogonal direction L, but may have a shape that is elongated in the arrangement direction W as long as the above-mentioned electrical resistance value setting is satisfied.

[0075] In the above embodiment, the sum of the light-receiving areas of the cells forming the parallel circuit is equal to the light-receiving area of the cells connected in series to the parallel circuit, but this is not limiting. For example, if the power generation amount of each cell forming the parallel circuit is smaller than the power generation amount of the cells connected in series to the parallel circuit, the sum of the light-receiving areas of the cells forming the parallel circuit may be larger or smaller than the light-receiving area of the cells connected in series to the parallel circuit.

[0076] In the above embodiments, the widths of the cells forming the parallel circuits in the arrangement direction W are equal, but this is not limiting. The widths of the cells forming the parallel circuits in the arrangement direction W may be different.

[0077] In the above embodiments, the widths of the cells forming the parallel circuit in the arrangement direction W are equal, but the widths of the cells connected in series in the arrangement direction W may also be equal to the widths of the cells forming the parallel circuit in the arrangement direction W.

[0078] In the above embodiments, the plurality of cells 12, 112, 212 are configured to have a circular or annular shape as a whole when viewed from the front, but the shape formed by the plurality of cells as a whole may be changed as appropriate. In the above embodiment, the solar cell module 11 is attached to the surface of the clothing 10, but the object to which the solar module is attached may be changed as appropriate. [Explanation of symbols]

[0079] 10...Clothing 11,111,211...Solar cell modules 12,112,212…cells 13…Light receiving surface 20, 120, 220...Large cells 20b…Back side 22,122,222…electrode 23,123,223…electrode 24...Edge 30, 130, 230...Small cells 31...1st small cell 31b…Back side 32,132,232…electrode 33,133,233…electrode 34,34a,34b,134...Edge 41...Second small cell 41b…Back side 42...Electrode 43...Electrode 44,144...First edge 45,145...Second edge 124...First edge 125...Second edge 126…Part 1 127…Second part 140...End cell 141...Back side 142...Electrode 143...Electrode 144...First edge 145...Second edge 224,234...long side 225,235...short side

Claims

1. A solar cell module comprising a plurality of cells arranged side by side and electrically connected to one another, the plurality of cells include a plurality of small cells connected in parallel to each other to form a parallel circuit, and a large cell connected in series to the parallel circuit and having a light-receiving area larger than that of the plurality of small cells; The cell has two electrodes; an electrical resistance value between the two electrodes of each of the plurality of small cells and the plurality of large cells is set so that a current value flowing through the large cell is larger than that when the plurality of small cells and the plurality of large cells are connected in series; Solar cell module.

2. When a direction perpendicular to both the arrangement direction of the plurality of cells and the thickness direction of the cells is defined as an orthogonal direction, Each of the cells has a shape elongated in the orthogonal direction, and has an edge adjacent to another cell and extending along the orthogonal direction; The electrode is provided on the edge. The solar cell module according to claim 1 .

3. Each of the cells is a perovskite cell. The solar cell module according to claim 1 or 2.

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