Solar cell module installation structure

Abstract

To provide an installation structure of a solar cell module capable of outputting original power.SOLUTION: An installation structure of a solar cell module is installed on a roof by combining a rectangular-shaped solar cell module and a polygonal solar cell module. At least some rectangular-shaped solar cell modules and polygonal solar cell modules comprise two strings connected in parallel. The two strings comprise a plurality of cell groups composed of one solar battery cell or a plurality of solar battery cells connected in series. In each of the plurality of cell groups, solar battery cells are distributed in one column in a predetermined distribution direction of the solar cell module main body. The plurality of cell groups are distributed in an orthogonal direction that is orthogonal to the distribution direction. Each of the plurality of cell groups is connected by an intermediate electrode wire. The number of cells of a first string and the number of cells of a second string are equal, and each solar battery cell is composed of a division cell.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present disclosure relates to a solar cell module. Installation structure Regarding. [Background technology]

[0002] For example, in a solar cell module, when one or more solar cells are connected in series to form a plurality of cell groups, the plurality of cell groups are connected by intermediate electrode wiring to form two strings, and the two strings are connected in parallel, the following inconveniences occur.

[0003] That is, in such a solar cell module, if the number of solar cells in one string of two strings is different from the number of solar cells in the other string, the voltage of one string will be different from that of the other string. This will cause a backflow between one string and the other string, resulting in a large power loss. Therefore, the original power cannot be output. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2018 / 173216 Summary of the Invention [Problem to be solved by the invention]

[0005] In this regard, the solar cell module described in Patent Document 1 is merely a complex connection of multiple cell groups, and is not a parallel connection of two strings, each of which is made up of multiple cell groups.

[0006] Therefore, the present disclosure provides a solar cell module that can output the inherent power when one or more solar cell cells are connected in series to form a plurality of cell groups, the plurality of cell groups are connected by intermediate electrode wiring to form two strings, and the two strings are connected in parallel. Installation structure The purpose is to provide. [Means for solving the problem]

[0007] In order to solve the above problems, the solar cell module according to the present disclosure Installation structure teeth, A solar cell module installation structure in which a solar cell module having a rectangular solar cell module body and a polygonal solar cell module having a right-angled corner portion and a corner portion having an angle other than a right angle are combined and installed on a roof, wherein at least a part of the rectangular solar cell modules and the polygonal solar cell module are both: The solar cell array includes two strings connected in parallel, each of the two strings including one solar cell. Also is a series connection of multiple solar cells. In a plurality of cell groups configured to receive a signal from the plurality of cell groups; are, respectively, The solar cell Ru The solar cell module body is arranged in a row in a predetermined row direction, and the plurality of cell groups are arranged in parallel in a direction perpendicular to the row direction, and the plurality of cell groups are connected to each other by intermediate electrode wiring. R, The solar cell cell in a first string of the two strings Le The number of cells and the number of the solar cell cells in the other second string Le The number of cells is equal, The solar cell is composed of divided cells. It is characterized by: Effect of the Invention

[0008] According to the present disclosure, when one or more solar cell cells are each connected in series to form a plurality of cell groups, the plurality of cell groups are each connected by intermediate electrode wiring to form two strings, and the two strings are connected in parallel, it is possible to output the inherent power. [Brief description of the drawings]

[0009] [Figure 1] 1 is a plan view illustrating an example of a polygonal solar cell module according to an embodiment of the present invention. [Diagram 2] 1 is a plan view illustrating an example of a polygonal solar cell module according to an embodiment of the present invention. [Figure 3A] 1 is a plan view illustrating an example of a rectangular solar cell module according to an embodiment of the present invention. [Figure 3B] 1 is a plan view illustrating an example of a rectangular solar cell module according to an embodiment of the present invention. [Figure 4] FIG. 2 is a vertical cross-sectional view showing the internal structure of a solar cell module. [Figure 5A] FIG. 11 is a plan view that illustrates a schematic configuration of a solar cell module different from that of the present embodiment. [Figure 5B] FIG. 11 is a plan view that illustrates a schematic configuration of a solar cell module different from that of the present embodiment. [Figure 5C] FIG. 11 is a plan view that illustrates a schematic configuration of a solar cell module different from that of the present embodiment. [Figure 5D] FIG. 11 is a plan view that illustrates a schematic configuration of a solar cell module different from that of the present embodiment. [Figure 6] FIG. 1 is a plan view illustrating a roof on which solar cell modules are installed. [Figure 7] 7 is a plan view showing, in outline, the solar cell modules installed on the installation surface of the roof shown in FIG. 6 and a module installation area in which rectangular solar cell modules are installed. FIG. [Figure 8A] FIG. 3C is a plan view showing another example of the solar cell module shown in FIG. 3B. [Figure 8B] FIG. 3C is a plan view showing still another example of the solar cell module shown in FIG. 3B. [Figure 8C] FIG. 5B is a plan view showing the solar cell module shown in FIG. 5A. [Figure 9] 1. FIG. 4 is a plan view showing another example of the solar cell module shown in FIG. [Figure 10A] 8B is a plan view showing an arrangement pattern in which the solar cell modules shown in FIG. 8A are arranged in three rows and three columns. [Figure 10B]8B is a plan view showing an arrangement pattern in which the solar cell modules shown in FIG. 8A are arranged in two rows and two columns, and the solar cell modules shown in FIG. 8B are arranged in one row and two rows. [Figure 10C] 8B is a plan view showing an arrangement pattern in which the solar cell modules shown in FIG. 8A are arranged in three rows and two columns, and the solar cell modules shown in FIG. 8C are arranged in one row and two rows. [Figure 10D] 8C。 FIG. 8C is a plan view showing an arrangement pattern in which the solar cell modules shown in FIG. 8B are arranged in two rows and four columns, and the solar cell modules shown in FIG. 8C are arranged in one row and four columns. [Figure 11A] 8 is a plan view showing an installation pattern different from the installation pattern shown in FIG. 7. [Figure 11B] 8 is a plan view showing an installation pattern different from the installation pattern shown in FIG. 7. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. The names and functions of the components are also the same. Therefore, detailed description thereof will not be repeated.

[0011] 1 and 2, as well as 3A and 3B, are plan views that are schematic diagrams illustrating examples of solar cell modules M1 and M2 according to the present embodiment. FIGS. 1 and 2 respectively show an example and another example of a solar cell module M1 in which the solar cell module body 30 has a polygonal shape (e.g., a pentagonal shape, a trapezoidal shape, or a triangular shape) having right-angled corners and corners at angles other than right angles. FIGS. 3A and 3B show an example of a solar cell module M2 in which the solar cell module body 30 has a rectangular shape and the polarity is reversed. The solar cell module M1 shown in FIGS. 1 and 2 may be configured so that the polarity is reversed. FIG. 4 is a vertical cross-sectional view illustrating the internal structure of the solar cell modules M1 and M2.

[0012] As shown in Figures 1 and 2 and Figures 3A and 3B, the solar cell modules M1 and M2 include two strings S(1) and S(2) connected in parallel to each other. The two strings S(1) and S(2) each include a plurality of cell groups CG(1,1) to CG(1,n1) and CG(2,1) to CG(2,n2) (n1 and n2 are integers of 2 or more). In the solar cell module M1 shown in Figures 1 and 2, n1=2 and n2=4, and in the solar cell module M2 shown in Figures 3A and 3B, n1=3 and n2=3.

[0013] The cell groups CG(1,1) to CG(1,n1) and CG(2,1) to CG(2,n2) are connected by intermediate electrode wirings La to La (bus bars), respectively. The cell groups CG(1,1) to CG(1,n1) and CG(2,1) to CG(2,n2) include one or more solar cell cells C, C to C (hereinafter simply referred to as C). In the cell groups CG(1,1) to CG(1,n1) and CG(2,1) to CG(2,n2), the solar cell C is connected in series.

[0014] In this embodiment, the solar cell C in the solar cell modules M1 and M2 is exemplified by a solar cell substrate having a size of about 160 mm square divided into two. That is, the solar cell C after division is formed to have an overall size of about 160 mm x 80 mm square.

[0015] As shown in FIG. 4, the solar cell C includes a front electrode 31 and a back electrode 32. The front electrode 31 is composed of a bus bar electrode 31a and a finger electrode (not shown). The bus bar electrode 31a is strip-shaped and is formed linearly in the arrangement direction X on the front surface of the solar cell C. A large number of finger electrodes are formed so as to extend in a comb-teeth shape from both side edges of the bus bar electrode 31a in an orthogonal direction Y perpendicular to the arrangement direction X. The finger electrodes are patterned to cover the entire light receiving surface of the solar cell C at regular intervals. The back electrode 32 is formed linearly in a strip shape in the arrangement direction X on the back surface of the solar cell C, and is provided so as to face the bus bar electrode 31a on the front and back.

[0016] The solar cell modules M1, M2 each include a solar cell C, wiring material 33 (interconnector), a light-transmitting substrate 34, and a protective member 35. The solar cell C includes a front electrode 31 and a back electrode 32. The wiring material 33 is connected to the bus bar electrode 31a of the front electrode 31 of one solar cell C and the back electrode 32 of the other solar cell C, and connects adjacent solar cells C, C in series. The light-transmitting substrate 34 is provided so as to face the front side (upper side in FIG. 4) of the solar cell C. The protective member 35 is provided so as to face the back side (lower side in FIG. 4) of the solar cell C.

[0017] The solar cell modules M1 and M2 have a structure in which the solar cell C and the wiring material 33 are sealed between a light-transmitting substrate 34 and a protective member 35 by a light-transmitting sealing material 36. The wiring material 33 is configured by coating the outer surface of a base material formed in a long and narrow strip shape with solder (solder plating process). The material of the base material is not particularly limited, but a metal such as copper can be used.

[0018] One side of the wiring member 33 (left side in FIG. 4) is solder-connected to the bus bar electrode 31a on the front surface of the solar cell C. The other side of the wiring member 33 (right side in FIG. 4) is solder-connected to the back surface electrode 32 on the back surface of the adjacent solar cell C. In this embodiment, five bus bar electrodes 31a are formed on the solar cell C, but one bus bar electrode 31a or two to four or six or more parallel bus bars may be formed. In this case, one back surface electrode 32 or two to four or six or more parallel bus bars are also formed, and one wiring member 33-33 or two to four or six or more parallel bus bars are also used.

[0019] Of the two strings S(1) and S(2), the number of solar cells C in the first string S(1) is equal to the number of solar cells C in the other string S(2). In the example shown in Figures 1 and 2, the number of cells in each of the first string S(1) and the second string S(2) is eight. In the example shown in Figures 3A and 3B, the number of cells in each of the first string S(1) and the second string S(2) is thirty.

[0020] According to this embodiment, since the number of solar cells C in the first string S(1) is equal to the number of solar cells C in the second string S(2), the voltage of one string S(1) and the voltage of the other string S(2) can be made the same. This makes it possible to avoid the occurrence of backflow between the one string S(1) and the other string S(2), and effectively prevent power loss. Therefore, it is possible to output the inherent power.

[0021] (First embodiment) In this embodiment, as shown in FIGS. 1 and 2 and 3A and 3B, the solar cell C in the first string S(1) and the solar cell C in the second string S(2) are arranged in a predetermined arrangement direction X of the solar cell module main body 30. The first string S(1) and the second string S(2) are arranged in parallel in the perpendicular direction Y. In each of the first string S(1) and the second string S(2), the cell groups CG(1,1) to CG(1,n1) and CG(2,1) to CG(2,n2) are arranged in parallel in the perpendicular direction Y. End electrode wirings Lb to Lb (bus bars) connected to at least one side of the cell groups CG(1,1) to CG(1,n1) and CG(2,1) to CG(2,n2) are provided at least at one end of the solar cell module main body 30 in the arrangement direction X. 1 and 2, end electrode wirings Lb-Lb connected to both sides of the cell groups CG(1,1)-CG(1,n1) and CG(2,1)-CG(2,n2) are provided at an end on one side (X1) in the arrangement direction X of the solar cell module main body 30. In the example shown in Figs. 3A and 3B, end electrode wirings Lb-Lb connected to both sides of the cell groups CG(1,1)-CG(1,n1) and CG(2,1)-CG(2,n2) are provided at end on both sides (X1,X2) in the arrangement direction X of the solar cell module main body 30.

[0022] In the example shown in FIG. 1, the end electrode wiring Lb of the cell group CG(1,1) and the end electrode wiring Lb of the cell group CG(2,n2) are connected to the connection electrode wiring Lc1. The end electrode wirings Lb of the cell group CG(1,n1) and the cell group CG(2,1) are connected to the connection electrode wiring Lc2. In the example shown in FIG. 2, the end electrode wiring Lb of the cell group CG(1,1) and the end electrode wiring Lb of the cell group CG(2,1) are connected to the connection electrode wiring Lc1. The end electrode wiring Lb of the cell group CG(1,n1) and the end electrode wiring Lb of the cell group CG(2,n2) are connected to the connection electrode wiring Lc2. In the example shown in FIG. 3A and FIG. 3B, the end electrode wiring Lb of the cell group CG(1,1) and the end electrode wiring Lb of the cell group CG(2,n2) are connected to the connection electrode wirings Lc1 and Lc2. The end electrode wirings Lb of the cell group CG(1,n1) and the cell group CG(2,1) are connected to the connection electrode wirings Lc2, Lc1. In the example shown in Fig. 1 and Fig. 2, the output may be from the ends on both sides (X1, X2) in the arrangement direction X of the solar cell module main body 30. In the example shown in Fig. 3A and Fig. 3B, the output may be from one end of the solar cell module main body 30 in the arrangement direction X.

[0023] Second embodiment In this embodiment, the end electrode wiring Lb provided at the end of one side (X1) in the arrangement direction X of the solar cell module main body 30 is provided along the orthogonal direction Y. This makes it possible to make the solar cell module main body 30 compact in the arrangement direction X.

[0024] Third embodiment In this embodiment, at least one of the solar cell cells C to C in the first string S(1) and the second string S(2) is composed of a divided cell. Here, a divided cell refers to a small cell obtained by dividing a standard-sized cell (a cell equivalent to one solar cell wafer, also called a full cell). Examples of divided cells include a standard-sized cell divided in half (a half cell) or a standard-sized cell divided into one-quarters. This makes it possible to reduce the current value per cell (halved in the case of a half cell), thereby reducing the power loss of the solar cell module accordingly. In this example, the solar cell cells C to C are half cells.

[0025] (Fourth embodiment) 1 and 2, the solar cell module M1 has a solar cell module body 30 formed in a polygonal shape having right-angled corners and corners at angles other than right angles. Examples of the polygonal shape include a pentagonal shape having three right-angled corners, a quadrilateral shape having two right-angled corners, or a right-angled triangle shape. In this example, the polygonal shape is a pentagonal shape having three right-angled corners. This can broaden the applications to which the solar cell module M1 can be applied.

[0026] 1 and 2, the solar cell module M1 has a polygonal shape that is a pentagon having three right-angled corners, a quadrangle having two right-angled corners, or a right-angled triangle, so that a pentagonal, quadrangle, or right-angled triangle solar cell module can be installed to match a roof having corners at angles other than right angles (for example, a hip-ridge roof, etc.). This allows efficient installation on roofs having corners at angles other than right angles (for example, a hip-ridge roof, etc.).

[0027] (Other types of solar cell modules) 5A to 5D are plan views that show schematic configurations of solar cell modules M1 and M2 according to the present embodiment. In each of Figs. 5A to 5D, a solar cell module main body 30x shows an example in which a plurality of strings Sx(1) to Sx(m) (m is an integer of 2 or more) are connected in series in a rectangular solar cell module Mx.

[0028] As shown in Figures 5A to 5D, the solar cell module Mx includes a plurality of strings Sx(1) to Sx(m) connected in series to each other. In the solar cell module Mx shown in Figures 5A to 5D, m = 3. Each of the plurality of strings S(1) to S(m) includes two cell groups CGx(1,1) to CGx(1,2) and CGx(m,1) to CGx(m,2).

[0029] The cell groups CGx(1,1) to CGx(1,2) and CGx(m,1) to CGx(m,2) are connected by intermediate electrode wirings La to La (bus bars), respectively. The cell groups CGx(1,1) to CGx(1,2) and CGx(m,1) to CGx(m,2) include one or more solar cell cells C. In the cell groups CGx(1,1) to CGx(1,2) and CGx(m,1) to CGx(m,2), the solar cell cells C are connected in series. The two cell groups CGx(1,1) to CGx(1,2) and CGx(m,1) to CGx(m,2) are connected in parallel by intermediate electrode wirings La to La.

[0030] The multiple strings Sx(1) to Sx(m) are arranged in parallel in the orthogonal direction Y. In each of the multiple strings Sx(1) to Sx(m), cell groups CGx(1,1) to CGx(1,2) and CGx(m,1) to CGx(m,2) are arranged in parallel in the orthogonal direction Y. The multiple strings Sx(1) to Sx(m) are connected in series by end electrode wirings Lb to Lb (bus bars), respectively.

[0031] The internal structure of the solar cell module Mx is similar to the internal structures of the solar cell modules M1 and M2 shown in FIG. 4, and a description thereof will be omitted here.

[0032] [Embodiments of solar cell module] 5A, the end electrode wiring Lb of positive or negative polarity (positive polarity in this example) is provided in the string Sx(1) on one side (Y1) in the orthogonal direction Y of an end portion on one side (X1) in the arrangement direction X. The end electrode wiring Lb of the other polarity (negative polarity in this example) is provided in the string Sx(m) on the other side (Y2) in the orthogonal direction Y of an end portion on the other side (X2) in the arrangement direction X.

[0033] 5B, the end electrode wiring Lb of positive or negative polarity (positive polarity in this example) is provided in the string Sx(1) on one side (Y1) in the orthogonal direction Y of the end portion on the other side (X2) in the arrangement direction X. The end electrode wiring Lb of the other polarity (negative polarity in this example) is provided in the string Sx(m) on the other side (Y2) in the orthogonal direction Y of the end portion on the one side (X1) in the arrangement direction X.

[0034] In the solar cell module Mx shown in Fig. 5C, the end electrode wiring Lb of positive or negative polarity (positive polarity in this example) is provided in the string Sx(1) on one side (Y1) in the orthogonal direction Y of the end portion on one side (X1) in the arrangement direction X. The end electrode wiring Lb of the other polarity (negative polarity in this example) is provided in the string Sx(2) in the center in the orthogonal direction Y of the end portion on the other side (X2) in the arrangement direction X.

[0035] 5D, the end electrode wiring Lb of positive or negative polarity (positive polarity in this example) is provided in the string Sx(2) at the center in the orthogonal direction Y of the end on the other side (X2) in the arrangement direction X. The end electrode wiring Lb of the other polarity (negative polarity in this example) is provided in the string Sx(1) on one side (Y1) in the orthogonal direction Y of the end on one side (X1) in the arrangement direction X.

[0036] Fifth embodiment [Installation of solar cell modules on roofs] Fig. 6 is a plan view showing a roof 10 on which solar cell modules M1, M2, and Mx are installed. Fig. 7 is a plan view showing a solar cell module M1 and a rectangular solar cell module M2 installed on an installation surface α of the roof 10 shown in Fig. 6, as well as a module installation area β.

[0037] Fig. 8A and Fig. 8B are plan views showing another example and yet another example of the solar cell module M2 shown in Fig. 3B, Fig. 8C is a plan view showing the solar cell module Mx shown in Fig. 5A, and Fig. 9 is a plan view showing another example of the solar cell module M1 shown in Fig. 1.

[0038] Solar cell modules M21 and M22 shown in FIGS. 8A and 8B are two solar cell modules M2 and M2 in which the number of solar cell cells C in the cell groups CG(1,1) to CG(1,n1) and CG(2,1) to CG(2,n2) in the solar cell module M2 shown in FIG. 3B is increased to 9 and 7, respectively. average The solar cell module M21 shown in Fig. 8A can output power equivalent to 54 full cells (108 half cells) connected in series (54 series equivalent (108 half cells)). The solar cell module M22 shown in Fig. 8B can output power equivalent to 42 full cells (84 half cells) connected in series (42 series equivalent (84 half cells)).

[0039] The solar cell module Mx shown in Fig. 8C is the same as the solar cell module Mx shown in Fig. 5A. The solar cell module Mx shown in Fig. 8C (the solar cell module Mx shown in Fig. 5A) can output power equivalent to 30 full cells (60 half cells) connected in series (equivalent to 30 series (60 half cells)).

[0040] The solar cell module M1 shown in Fig. 9 is symmetrical with respect to a central axis line along the row installation direction X that passes through the center of the orthogonal direction Y in the solar cell module M1 shown in Fig. 1. The solar cell module M1 shown in Fig. 9 can output power equivalent to 20 full cells (40 half cells) connected in series (equivalent to 20 series (40 half cells)).

[0041] (Solar cell module arrangement pattern) Fig. 10A is a plan view showing an arrangement pattern PTa1 in which the solar cell modules M21 shown in Fig. 8A are arranged in three rows and three columns. Fig. 10B is a plan view showing an arrangement pattern PTa2 in which the solar cell modules M21 shown in Fig. 8A are arranged in two rows and two columns and the solar cell module M22 shown in Fig. 8B is arranged in one row and two columns. Fig. 10C is a plan view showing an arrangement pattern PTa3 in which the solar cell modules M21 shown in Fig. 8A are arranged in three rows and two columns and the solar cell module Mx shown in Fig. 8C is arranged in one row and two columns. Fig. 10D is a plan view showing an arrangement pattern PTa4 in which the solar cell modules M22 shown in Fig. 8B are arranged in four rows and two columns and the solar cell module Mx shown in Fig. 8C is arranged in four rows and one column.

[0042] In the parallel arrangement pattern PTa1 shown in FIG. 10A, it is possible to output power equivalent to 54 full cells (108 half cells) connected in series in three rows and three columns. In the parallel arrangement pattern PTa2 shown in FIG. 10B, it is possible to output power equivalent to 54 full cells (108 half cells) connected in series in two rows and two columns, and power equivalent to 42 full cells (84 half cells) connected in series in one row and two columns. In the parallel arrangement pattern PTa3 shown in FIG. 10C, it is possible to output power equivalent to 54 full cells (108 half cells) connected in series in two rows and three columns, and power equivalent to 30 full cells (60 half cells) connected in series in one row and two columns. In the parallel arrangement pattern PTa4 shown in FIG. 10D, it is possible to output power equivalent to 42 full cells (84 half cells) connected in series in two rows and four columns, and power equivalent to 30 full cells (60 half cells) connected in series in one row and four columns.

[0043] 11A and 11B are plan views showing installation patterns PTb2 and PTb3 which are different from the installation pattern PTb1 shown in FIG.

[0044] The installation pattern PTb2 shown in Fig. 11A is obtained by installing rectangular solar cell modules Mx shown in Fig. 8C instead of the rectangular solar cell modules M2 shown in Fig. 3A on both sides of the module installation area β in the installation pattern PTb1 shown in Fig. 7, and installing a rectangular solar cell module M21 shown in Fig. 8A in the module installation area β. A In the installation pattern PTb2 shown in the figure, it is possible to output the power of three series-connected cells equivalent to 54 full cells (108 half cells), six series-connected cells equivalent to 30 full cells (60 half cells), or six series-connected cells equivalent to 20 full cells (40 half cells) arranged in parallel (54 series equivalent (108 half cells), 30 series equivalent (60 half cells), and pentagonal series equivalent to 20 cells (40 half cells) in three rows).

[0045] The installation pattern PTb3 shown in FIG. 11B is obtained by installing rectangular solar cell modules Mx shown in FIG. 8C instead of the rectangular solar cell modules M2 shown in FIG. 3A on both sides of the module installation area β in the installation pattern PTb1 shown in FIG. 7, and installing a rectangular solar cell module M22 shown in FIG. 8B in the module installation area β. 1B In the installation pattern PTb3 shown in the figure, it is possible to output the power of three series-connected cells equivalent to 42 full cells (84 half cells), six series-connected cells equivalent to 30 full cells (60 half cells), or six series-connected cells equivalent to 20 full cells (40 half cells) arranged in parallel (42 series equivalent (84 half cells), 30 series equivalent (60 half cells), and pentagonal series equivalent to 20 series (40 half cells) in three rows).

[0046] (Other embodiments) In the first to fifth embodiments, a standard size cell (full cell) divided in half is used as the solar cell, but a cell divided into quarters or a full cell may also be used.

[0047] In addition, in the first to fifth embodiments, the present invention is applied to a monocrystalline solar cell module in which electrodes are formed on both the light-receiving surface and the back surface opposite the light-receiving surface, but the present invention may also be applied to a back electrode type solar cell module (so-called back contact type solar cell module) in which a p-type electrode and an n-type electrode are formed on the back surface opposite the light-receiving surface.

[0048] The present disclosure is not limited to the above-described embodiments, and can be implemented in various other forms. Therefore, the embodiments are merely illustrative in all respects and should not be interpreted as being limited. The scope of the present disclosure is indicated by the claims, and is not restricted in any way by the text of the specification. Furthermore, all modifications and changes within the scope of the claims are within the scope of the present disclosure. [Explanation of symbols]

[0049] 10. Roof 30 Solar cell module body C. Solar cell CG Cell Group La Intermediate electrode wiring Lb end electrode wiring Lc connection electrode wiring M1 Solar Module M2 Solar Module M21 Solar Module M22 Solar Module PTa1 parallel pattern PTa2 parallel pattern PTa3 parallel pattern PTa4 parallel pattern PTb1 installation pattern PTb2 installation pattern PTb3 Installation Pattern S String X row direction Y orthogonal direction α Installation surface β Module installation area

Claims

1. A solar cell module installation structure in which a solar cell module body having a rectangular shape and a solar cell module body having a polygonal shape having right-angled corners and corners at angles other than right angles are combined and installed on a roof, At least a part of the rectangular solar cell modules and the polygonal solar cell module are each Two strings connected in parallel, Each of the two strings includes one solar cell or a plurality of cell groups each including a plurality of solar cells connected in series; In each of the plurality of cell groups, the solar cells are arranged in a row in a predetermined arrangement direction of the solar cell module body, and the plurality of cell groups are arranged side by side in an orthogonal direction perpendicular to the arrangement direction, The plurality of cell groups are connected to each other by intermediate electrode wiring, the number of the solar cells in one of the two strings, a first string, is equal to the number of the solar cells in the other of the two strings, a second string; 2. A solar cell module installation structure, wherein the solar cell is composed of divided cells.

2. The solar cell module installation structure according to claim 1, A solar cell module installation structure comprising: one or more rectangular solar cell modules; and one or more polygonal solar cell modules installed to the side of the rectangular solar cell modules.

3. The solar cell module installation structure according to claim 1, A solar cell module installation structure comprising: the polygonal solar cell module; and the rectangular solar cell module and another polygonal solar cell module installed on the eaves side of the polygonal solar cell module.

4. The solar cell module installation structure according to claim 1, A solar cell module installation structure comprising: the polygonal solar cell module; and the rectangular solar cell module installed on the eaves side of the polygonal solar cell module.

5. The solar cell module installation structure according to claim 1, A solar cell module installation structure comprising: one or more rectangular solar cell modules; and a plurality of polygonal solar cell modules installed on both sides of the one or more rectangular solar cell modules.

6. The solar cell module installation structure according to claim 1, A solar cell module having a plurality of rectangular shapes and a solar cell module having a polygonal shape, A solar cell module installation structure, wherein the plurality of rectangular solar cell modules are a mixture of a plurality of types of rectangular solar cell modules having different numbers of divided cells.

7. An installation structure for a solar cell module according to claim 1, A solar cell module having a plurality of rectangular shapes and a solar cell module having a polygonal shape, 1. A solar cell module installation structure, wherein the plurality of rectangular solar cell modules are a mixture of a plurality of types of rectangular solar cell modules having different outer sizes.

8. The solar cell module installation structure according to claim 1, the rectangular solar cell modules include a rectangular solar cell module having a plurality of strings connected in series, the rectangular solar cell module being different from the portion of the rectangular solar cell modules; A solar cell module installation structure, characterized in that each of the strings of a rectangular solar cell module having a plurality of strings connected in series has two rows of cell groups connected in parallel.

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