Solar cell module

Abstract

A solar cell module (1) of an embodiment has a solar cell element (10), lead-out wires (11, 12), connection wires (21, 22), and a connector (15). The lead-out wires (11, 12) extend from a positive electrode (10p) and a negative electrode (10n) of the solar cell element (10). The lead-out wires (11, 12) are connected to the connection wires (21, 22). The connector (15) is provided at a plurality of sites to connect the connection wires (21, 22) to the outside. The solar cell module (1) also has connection wires (31-34) that are connected to the outside in the connector (15).

Description

Technical Field

[0001] The embodiments of the present invention relate to solar cell modules. Background Technology

[0002] Multiple solar cell modules are connected in series and / or parallel for use. Cost control is required for solar cell modules.

[0003] Existing technical documents Patent documents Patent Document 1: Japanese Patent Application Publication No. 2004-214475 Summary of the Invention

[0004] The technical problem that the invention aims to solve The technical problem to be solved by the present invention is to provide a solar cell module that can suppress costs.

[0005] Means for solving technical problems The solar cell module of this embodiment includes a solar cell element, a positive electrode connection wire, a negative electrode connection wire, a connecting wire, and multiple connectors. The positive electrode connection wire is connected to the positive electrode of the solar cell element. The negative electrode connection wire is connected to the negative electrode of the solar cell element. The connecting wire is not connected to either the positive or negative electrode, but is used for at least one of series connection and parallel connection of the solar cell element. Each of the multiple connectors has at least one of a positive electrode connection terminal for connecting the positive electrode connection wire to an external source, a negative electrode connection terminal for connecting the negative electrode connection wire to an external source, and a connecting terminal for connecting the connecting wire to an external source. Attached Figure Description

[0006] Figure 1 This is a schematic structural diagram of the solar cell module according to the implementation method.

[0007] Figure 2 This is a schematic structural diagram of a solar cell module according to a first variation of the implementation method.

[0008] Figure 3 This is the circuit diagram of the first connector.

[0009] Figure 4 This is the circuit diagram of the second connector.

[0010] Figure 5 This is the layout diagram of the third and seventh connectors.

[0011] Figure 6 This is the circuit diagram of the third connector.

[0012] Figure 7 This is the layout diagram of the fourth, fifth, eighth, and ninth connectors.

[0013] Figure 8 This is the circuit diagram of the fourth connector.

[0014] Figure 9 This is the circuit diagram of the fifth connector.

[0015] Figure 10 This is a schematic structural diagram of a solar cell module according to a second variation of the implementation method.

[0016] Figure 11 This is the layout diagram of the sixth connector.

[0017] Figure 12 This is the circuit diagram for the sixth connector.

[0018] Figure 13 This is a schematic structural diagram of a solar cell module according to the third variation of the implementation method.

[0019] Figure 14 This is the circuit diagram for the seventh connector.

[0020] Figure 15 This is a schematic structural diagram of a solar cell module according to the fourth variation of the implementation method.

[0021] Figure 16 This is the circuit diagram for the eighth connector.

[0022] Figure 17 This is a schematic structural diagram of a solar cell module according to the fifth variation of the implementation method.

[0023] Figure 18 This is the circuit diagram of the ninth connector. Detailed Implementation

[0024] Hereinafter, the solar cell module of the embodiment will be described with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic structural diagram of the solar cell module 1 in the embodiment. Figure 1 The left side is a top view. Figure 1 The right side is a side sectional view along line II. The solar cell module 1 has a base component 2, a cover component 8, and a sealing material 5. The solar cell module 1 has a solar cell element 10, lead wires 11 and 12, connecting wires 21 and 22, connecting wires 31-34, and a connector 15.

[0026] In this application, the X, Y, and Z directions of the orthogonal coordinate system are defined as follows: The Z direction is the thickness direction of the solar cell element 10. The X direction is the direction in which the connecting wires 21, 22 and the connecting wires 31-34 extend. The Y direction is the direction in which the connecting wires 21, 22 and the connecting wires 31-34 are arranged.

[0027] The base component 2 and the cover component 8 are made of a light-transmitting resin sheet or glass substrate, etc. The base component 2 is disposed on the rear side of the solar cell module 1, i.e., the -Z side. The cover component 8 is disposed on the front side of the solar cell module 1, i.e., the +Z side.

[0028] The sealing material 5 is formed of a resin material or the like that has light transmittance and electrical insulation. The sealing material 5 is disposed between the base component 2 and the cover component 8 in the Z direction. The sealing material 5, together with the solar cell element 10, lead wires 11 and 12, connecting wires 21 and 22, and connecting wires 31-34, is formed using semiconductor technology.

[0029] The solar cell element 10 has a semiconductor layer. The semiconductor layer includes perovskite semiconductor, transmissive cuprous oxide (Cu2O) semiconductor, silicon, etc. The perovskite semiconductor contains a perovskite structure in at least a portion. The perovskite structure is one of the crystal structures and is the same crystal structure as perovskite. Typically, the perovskite structure is composed of ions A, B, and X, and is represented by the following general formula (1).

[0030] ABX3···(1) As A, primary ammonium ions can be utilized. Specifically, CH3NH3 can be used as an example. + C2H5NH3 + C3H7NH3 + C4H9NH3 + and HC(NH2)2 + etc., preferably CH3NH3 + However, it is not limited to this. Additionally, A also prefers Cs. + 、Rb + 1,1,1-trifluoro-ethylammonium iodide (FEAI), but not limited to these. As B, Pb can be utilized. 2+ or Sn 2+ Divalent metal ions, but not limited to these. As X, Cl can be used. - ,Br - Or I - Isohalide ions. The materials constituting ions A, B, or X can be single or mixed. The ions that constitute them do not necessarily have the same stoichiometric ratio as ABX3 to function.

[0031] The solar cell element 10 has a positive electrode 10p and a negative electrode 10n. The positive electrode 10p and the negative electrode 10n are disposed at the ends of the solar cell element 10 in the Y direction. The positive electrode 10p is disposed at the end of the solar cell element 10 on the +Y side, and the negative electrode 10n is disposed at the end of the solar cell element 10 on the -Y side. The positive electrode 10p and the negative electrode 10n are integrally formed in the X direction of the solar cell element 10.

[0032] Lead-out wiring 11, 12, connecting wiring 21, 22 and connecting wiring 31-34 are formed of conductive metal materials such as aluminum (Al) and copper (Cu).

[0033] Connecting wires 21 and 22 extend in the X direction. Connecting wires 21 and 22 are positive connecting wire 21 and negative connecting wire 22, respectively. Positive connecting wire 21 and negative connecting wire 22 are arranged in the Y direction. Positive connecting wire 21 is arranged on the +Y side, and negative connecting wire 22 is arranged on the -Y side. Connecting wires 21 and 22 are located on the +Y side of the solar cell element 10. Connecting wires 21 and 22 are located on the -Z side of the solar cell element 10.

[0034] Lead-out wires 11 and 12 are positive lead-out wire 11 and negative lead-out wire 12, respectively. Positive lead-out wire 11 extends from the X-direction end of positive electrode 10p towards the +Y and -Z sides, and connects to positive connection wire 21. Negative lead-out wire 12 extends from the X-direction end of negative electrode 10n towards the -Z and +Y sides, and connects to negative connection wire 22.

[0035] The solar cell module 1 has a bypass diode 26. The bypass diode 26 is formed by crossing the positive connection wire 21 and the negative connection wire 22. The bypass diode 26 bypasses the solar cell element 10 to allow current to flow in the event of a fault. The bypass diode 26 can also be formed by crossing the positive lead wire 11 and the negative lead wire 12. The solar cell module 1 may also have a fuse (or anti-reverse current diode) 27. The fuse (or anti-reverse current diode) 27 is formed in the connection wires 21 and 22 or the lead wires 11 and 12. The fuse 27 cuts off the wiring when a large current flows through it.

[0036] Connecting wires 31-34 extend along the X direction. There are three or more connecting wires 31-34, for example, four. Connecting wires 31-34 are the first connecting wire 31, the second connecting wire 32, the third connecting wire 33, and the fourth connecting wire 34. Connecting wires 31-34 are arranged in the Y direction. The first connecting wire 31, the second connecting wire 32, the third connecting wire 33, and the fourth connecting wire 34 are arranged sequentially from the -Y side to the +Y side. Connecting wires 31-34 are located on the +Y side of connecting wires 21 and 22. Connecting wires 31-34 are located on the -Z side of the solar cell element 10.

[0037] Connector 15 is disposed in multiple locations, for example, in two locations. Connector 15 is disposed at the ends of both sides of the solar cell module 1 in the X direction. Connector 15 is disposed at the front end of the flexible substrate 16. The flexible substrate 16 extends outward in the X direction from the base member 2, the sealing material 5, and the cover member 8. Connecting wires 21, 22 and connecting wires 31-34 extend through the flexible substrate 16 to connector 15. Connector 15 connects connecting wires 21, 22, and connecting wires 31-34 to the outside. Connector 15 has a positive terminal (battery terminal) for connecting positive terminal connecting wire 21 to the outside, a negative terminal (battery terminal) for connecting negative terminal connecting wire 22 to the outside, and a terminal (battery terminal) for connecting wires 31-34 to the outside.

[0038] Figure 2 This is a schematic structural diagram of the solar cell module 1 in the first variation of the implementation. Figure 2 The left side is a top view. Figure 2 The right side is a side sectional view at line II-II. In the first variation, the connecting wires 31-34 are arranged to overlap with the solar cell element 10 when viewed from the Z direction. The connecting wires 31-34 are located in the middle of the solar cell element 10 in the Y direction. The connecting wires 21 and 22 are also similarly located in the middle of the solar cell element 10 in the Y direction. The connecting wires 21 and 22 and the lead wires 11 and 12 are formed separately on both sides of the solar cell element 10 in the X direction. The connecting wires 21 and 22 may also be formed continuously in the X direction.

[0039] In the first variation, the connecting wires 31-34 and / or the connecting wires 21, 22 are configured to overlap with the solar cell element 10 when viewed from the Z direction. The connecting wires 31-34 and / or the connecting wires 21, 22 are located at the middle portion of the solar cell element 10 in the Y direction. As a result, the solar cell module 1 is miniaturized in the Y direction.

[0040] Figure 3 This is the circuit diagram of the first connector 71.

[0041] The connector 70 is formed by alternately connecting multiple solar cell modules 1 and multiple terminal boxes 40. The connection direction between the solar cell modules 1 and the terminal boxes 40 is the R direction. The positive terminal 70p and the negative terminal 70n of the connector 70 are located on the +R side.

[0042] The terminal box 40 has connectors 45 on both sides in the R direction. Connectors 15 of the solar cell module 1 are connected to connectors 45 of the terminal box 40. For example, connector 15 of the solar cell module 1 is one of a socket and a plug, and connector 45 of the terminal box 40 is the other of a socket and a plug. The connector 45 on the +R side of the terminal box 40 has connection terminals 21a, 22a and 31a~34a that connect to the connection wirings 21, 22 and the connection wirings 31-34 of the solar cell module 1. The connector 45 on the -R side of the terminal box 40 has connection terminals 21b, 22b and 31b~34b that connect to the connection wirings 21, 22 and the connection wirings 31-34 of the solar cell module 1.

[0043] Furthermore, the end terminal box connected to the end of the connector 70 on the -R side only has connection terminals 21a, 22a and connection terminals 31a to 34a.

[0044] Terminal box 40 is configured to connect the connecting wires 21, 22 and the connecting wires 31-34 between the solar cell modules 1 arranged on both sides in the R direction. Connector 70 has various terminal boxes 40 with different internal wiring structures.

[0045] The first connector 71 is formed by connecting multiple solar cell modules 1 in parallel. Compared with a typical Si solar cell, the current generated by the solar cell element 10 containing a perovskite semiconductor is small. In practical applications, a structure in which multiple solar cell modules 1 are connected in parallel is envisioned.

[0046] The first connector 71 has two types of terminal boxes: a first terminal box 41 and a first end terminal box 48. The first terminal box 41 is connected to the +R side of the solar cell module 1 included in the first connector 71. The first end terminal box 48 is connected to the -R side of the solar cell module 1 disposed at the -R side of the end of the first connector 71.

[0047] The internal wiring structure of the first terminal box 41 is as follows: The negative connection terminal 22b on the -R side is connected to the negative connection terminal 22a on the +R side. The first connection terminal 31b on the -R side and the first connection terminal 31a on the +R side are connected via internal wiring 31c. The positive connection terminal 21b on the -R side is connected to internal wiring 31c via the anti-reverse current diode 46. Other terminals terminate.

[0048] All terminals in the first end terminal box 48 are terminated.

[0049] In the first terminal box 41 located at the +R side, the first connection terminal 31a on the +R side becomes the positive terminal 70p of the first connector 71, and the negative connection terminal 22a on the +R side becomes the negative terminal 70n of the first connector 71.

[0050] In the first connector 71, multiple solar cell modules 1 are connected in parallel using only the first connecting wire 31 of the four connecting wires 31-34.

[0051] In the first connector 71, the number of parallel-connected solar cell modules 1 is increased by adding a solar cell module 1 and a first terminal box 41 to the +R side. In the first connector 71, the solar cell modules 1 are connected in parallel using only two types of terminal boxes 40: the first terminal box 41 and the first end terminal box 48. The first connector 71 is constructed without external wiring using these solar cell modules 1. Therefore, the cost of the first connector 71 can be reduced.

[0052] Figure 4 This is a circuit diagram of the second connector 72. The second connector 72 is formed by connecting multiple solar cell modules 1 in series. The second connector 72 has two types of terminal boxes: a second terminal box 42 and a second end terminal box 49. The second terminal box 42 is connected to the +R side of the solar cell module 1 included in the second connector 72. The second end terminal box 49 is connected to the -R side of the solar cell module 1 located at the -R side of the second connector 72.

[0053] The internal wiring structure of the second terminal box 42 is as follows: The negative connection terminal 22b on the -R side is connected to the positive connection terminal 21a on the +R side. The first connection terminal 31b on the -R side is connected to the first connection terminal 31a on the +R side. Other terminals terminate the connection.

[0054] The internal wiring structure of the second end terminal box 49 is as follows. The positive connection terminal 21a on the +R side is connected to the first connection terminal 31a on the +R side via the anti-reverse diode 46. Other terminals terminate the connection.

[0055] In the second terminal box 42 at the +R side end, the first connection terminal 31a on the +R side becomes the positive terminal 70p of the second connector 72, and the positive connection terminal 21a on the +R side becomes the negative terminal 70n of the second connector 72.

[0056] In the second connector 72, multiple solar cell modules 1 are connected in series using only the first connecting wire 31 of the four connecting wires 31-34.

[0057] In the second connector 72, the number of solar cell modules 1 connected in series is increased by adding a solar cell module 1 and a second terminal box 42 to the +R side. In the second connector 72, the solar cell modules 1 are connected in series using only the second terminal box 42 and the second end terminal box 49. The second connector 72 is constructed without external wiring using these solar cell modules 1. Therefore, the cost of the second connector 72 can be reduced.

[0058] Figure 5 This is a layout diagram of the third connector 73. Solar cell modules 91, 92, and 93 are the aforementioned solar cell module 1. The third connector 73 comprises a unit consisting of three solar cell modules 91, 92, and 93 connected in series, namely, the first unit A and the second unit B. The first unit A and the second unit B are connected in parallel.

[0059] Figure 6 This is a circuit diagram of the third connector 73. The first unit A and the second unit B are arranged sequentially from the -R side to the +R side. The third connector 73 has three types of terminal boxes: a first terminal box 51, a second terminal box 52, and a third terminal box 53. The first terminal box 51 is connected to the +R side of the solar cell module 91 located at the +R end of the unit. The second terminal box 52 is connected to the +R side of the solar cell module 92 located in the middle of the R direction within the unit. The third terminal box 53 is connected to the +R side of the solar cell module 93 located at the -R end of the unit.

[0060] The internal wiring structure of the first terminal box 51 is as follows: The positive connection terminal 21b on the -R side is connected to the first connection terminal 31b on the -R side. The second connection terminal 32b on the -R side is connected to the second connection terminal 32a on the +R side. The third connection terminal 33b on the -R side and the third connection terminal 33a on the +R side are connected via internal wiring 33c. The negative connection terminal 22b on the -R side is connected to internal wiring 33c. Other terminals terminate.

[0061] The internal wiring structure of the second terminal box 52 is as follows: The negative connection terminal 22b on the -R side is connected to the first connection terminal 31a on the +R side. The positive connection terminal 21b on the -R side is connected to the first connection terminal 31b on the -R side. The second connection terminal 32b on the -R side is connected to the second connection terminal 32a on the +R side. The third connection terminal 33b on the -R side is connected to the third connection terminal 33a on the +R side. Other terminals terminate the wiring.

[0062] The internal wiring structure of the third terminal box 53 is as follows: The negative connection terminal 22b on the -R side is connected to the first connection terminal 31a on the +R side. The second connection terminal 32b on the -R side and the second connection terminal 32a on the +R side are connected via internal wiring 32c. The positive connection terminal 21b on the -R side is connected to internal wiring 32c via the anti-reverse current diode 56. The third connection terminal 33b on the -R side is connected to the third connection terminal 33a on the +R side. Other terminals terminate.

[0063] The first unit A and the second unit B are constructed in the same way. The second unit B is connected to the +R side of the first unit A.

[0064] In the first terminal box 51 of the second unit B, the second connection terminal 32a on the +R side becomes the positive terminal 70p of the third connector 73, and the third connection terminal 33a on the +R side becomes the negative terminal 70n of the third connector 73.

[0065] In the third connector 73, multiple solar cell modules 91-93 are connected in series and in parallel using the first connecting wire 31, the second connecting wire 32 and the third connecting wire 33 of the four connecting wires 31-34.

[0066] In the third connector 73, by adding a solar cell module 92 together with the second terminal box 52 at the middle part in the R direction within the unit, the number of solar cell modules 1 connected in series within the unit increases. In the third connector 73, solar cell modules 91-93 are connected in series within the unit using the first terminal box 51, the second terminal box 52, and the third terminal box 53. By adding other units to the +R side of the second unit B connected to the +R side end of the third connector 73, the number of units connected in parallel increases. With these solar cell modules 91-93, the third connector 73 is constructed without external wiring. Therefore, the cost of the third connector 73 can be reduced.

[0067] Figure 7 This is a layout diagram of the fourth connector 74 and the fifth connector 75. Solar cell modules 91 and 92 are the aforementioned solar cell module 1. The fourth connector 74 comprises a unit consisting of two solar cell modules 91 and 92 connected in parallel, namely, a first unit A, a second unit B, and a third unit C. The first unit A, the second unit B, and the third unit C are connected in series. The fifth connector 75 is similarly connected.

[0068] Figure 8This is the circuit diagram of the fourth connector 74. The first unit A, second unit B, and third unit C are arranged sequentially from the -R side to the +R side. The fourth connector 74 has five terminal boxes: a first terminal box 61, a second terminal box 62, a third terminal box 63, a fourth terminal box 64, and a fifth terminal box 65. The first terminal box 61 is connected to the +R side of the solar cell module 91 located at the +R side end within the third unit C. The second terminal box 62 is connected to the +R side of the other solar cell modules 92 within the third unit C. The third terminal box 63 is connected to the +R side of the solar cell module 91 located at the +R side end within the second unit B. The fourth terminal box 64 is connected to the +R side of the solar cell module 91 located at the +R side end within the first unit A. The fifth terminal box 65 is connected to the +R side of the other solar cell modules 92 within the second unit B and the first unit A.

[0069] The internal wiring structure of the first terminal box 61 is as follows: The positive terminal 21b on the -R side is connected to the second terminal 32b on the -R side via the anti-reverse diode 66. The third terminal 33b on the -R side is connected to the third terminal 33a on the +R side. The fourth terminal 34b on the -R side and the fourth terminal 34a on the +R side are connected via internal wiring 34c. The negative terminal 22b on the -R side is connected to internal wiring 34c. Other terminals terminate.

[0070] The internal wiring structure of the second terminal box 62 is as follows: The second connection terminal 32b on the -R side and the second connection terminal 32a on the +R side are connected via internal wiring 32c. The positive connection terminal 21b on the -R side is connected to internal wiring 32c via the anti-reverse current diode 66. The third connection terminal 33b on the -R side is connected to the third connection terminal 33a on the +R side. The fourth connection terminal 34b on the -R side and the fourth connection terminal 34a on the +R side are connected via internal wiring 34c. The negative connection terminal 22b on the -R side is connected to internal wiring 34c. Other terminals terminate.

[0071] The internal wiring structure of the third terminal box 63 is as follows: The first connection terminal 31b on the -R side and the second connection terminal 32a on the +R side are connected via internal wiring 35c. The negative connection terminal 22b on the -R side is connected to internal wiring 35c. The positive connection terminal 21b on the -R side is connected to the second connection terminal 32b on the -R side via the anti-reverse current diode 66. The third connection terminal 33b on the -R side is connected to the third connection terminal 33a on the +R side. Other terminals terminate.

[0072] The internal wiring structure of the fourth terminal box 64 is as follows: The first connection terminal 31b on the -R side and the second connection terminal 32a on the +R side are connected via internal wiring 35c. The negative connection terminal 22b on the -R side is connected to internal wiring 35c. The second connection terminal 32b on the -R side and the third connection terminal 33a on the +R side are connected via internal wiring 36c. The positive connection terminal 21b on the -R side is connected to internal wiring 36c via the anti-reverse current diode 66. Other terminals terminate the connection.

[0073] The internal wiring structure of the fifth terminal box 65 is as follows: The first connection terminal 31b on the -R side and the first connection terminal 31a on the +R side are connected via internal wiring 31c. The negative connection terminal 22b on the -R side is connected to internal wiring 31c. The second connection terminal 32b on the -R side and the second connection terminal 32a on the +R side are connected via internal wiring 32c. The positive connection terminal 21b on the -R side is connected to internal wiring 32c via the anti-reverse current diode 66. The third connection terminal 33b on the -R side is connected to the third connection terminal 33a on the +R side. Other terminals terminate.

[0074] In the first terminal box 61 of the third unit C, the third connection terminal 33a on the +R side becomes the positive terminal 70p of the fourth connector 74, and the fourth connection terminal 34a on the +R side becomes the negative terminal 70n of the fourth connector 74.

[0075] In the fourth connector 74, multiple solar cell modules 91-92 are connected in parallel and in series using all four connecting wires 31-34.

[0076] In the third unit C of the fourth connector 74, the number of solar cell modules 92 connected in parallel within the unit is increased by adding a solar cell module 92 together with the second terminal box 62 in the middle of the unit. In the second unit B and the first unit A, the number of solar cell modules 92 connected in parallel within the unit is increased by adding a solar cell module 92 together with the fifth terminal box 65 in the middle of the unit. By adding a unit identical to the second unit B between the second unit B and the first unit A, the number of units connected in series is increased. The fourth connector 74 is constructed without external wiring using these solar cell modules 91-92. Therefore, the cost of the fourth connector 74 can be reduced.

[0077] Figure 9This is the circuit diagram of the fifth connector 75. The first unit A, second unit B, and third unit C are arranged sequentially from the -R side to the +R side. The fifth connector 75 has three types of terminal boxes: a first terminal box 81, a second terminal box 82, and a third terminal box 83. The first terminal box 81 is connected to the +R side of the solar cell module 91 located at the +R side end of the third unit C. The second terminal box 82 is connected to the +R side of the other solar cell modules 92 within the third unit C. The solar cell modules and terminal boxes located in the second unit B are arranged in the same way as those in the third unit C. The third terminal box 83 is connected to the +R side of the solar cell module 91 located at the +R side end of the first unit A. The second terminal box 82 is connected to the +R side of the solar cell module 92 located at the +R side end of the first unit A.

[0078] The internal wiring structure of the first terminal box 81 is as follows: The positive terminal 21b on the -R side is connected to the first connection terminal 31b on the -R side via the anti-reverse diode 66. The second connection terminal 32b on the -R side is connected to the second connection terminal 32a on the +R side. The third connection terminal 33b on the -R side and the third connection terminal 33a on the +R side are connected via internal wiring 33c. The negative terminal 22b on the -R side is connected to internal wiring 33c. Other terminals terminate.

[0079] The internal wiring structure of the second terminal box 82 is as follows: The second connection terminal 32b on the -R side is connected to the second connection terminal 32a on the +R side. The third connection terminal 33b on the -R side is connected to the first connection terminal 31a on the +R side via internal wiring 35c. The positive connection terminal 21b on the -R side is connected to internal wiring 35c via the anti-reverse current diode 66. The negative connection terminal 22b on the -R side is connected to the third connection terminal 33a on the +R side. Other terminals terminate.

[0080] The internal wiring structure of the third terminal box 83 is as follows: The first connection terminal 31b on the -R side and the second connection terminal 32a on the +R side are connected via internal wiring 35c. The positive connection terminal 21b on the -R side is connected to internal wiring 35c via the anti-reverse current diode 66. The third connection terminal 33b on the -R side and the third connection terminal 33a on the +R side are connected via internal wiring 33c. The negative connection terminal 22b on the -R side is connected to internal wiring 33c. Other terminals terminate.

[0081] In the first terminal box 81 of the third unit C, the second connection terminal 32a on the +R side becomes the positive terminal 70p of the fifth connector 75, and the third connection terminal 33a on the +R side becomes the negative terminal 70n of the fifth connector 75.

[0082] In the fifth connector 75, multiple solar cell modules 91-92 are connected in parallel and in series using three connecting wires 31-33.

[0083] In the third unit C of the fifth connector 75, by adding a solar cell module 92 together with the second terminal box 82 in the middle of the unit, the number of solar cell modules 92 connected in parallel within the unit increases. Similarly, the second unit B and the first unit A, along with the third unit C, add the same number of solar cell modules 92 together with the second terminal box 82 in the middle of the unit, thereby increasing the number of solar cell modules 92 connected in parallel within the unit. By adding other units to the +R side of the third unit C, which is connected to the +R side of the fifth connector 75, the number of units connected in series increases. The fifth connector 75 is constructed without external wiring using these solar cell modules 91-92. Therefore, by using three connecting wires 31-33—one less than the four connecting wires 31-34 used in the fourth connector 74—parallel and series connections of multiple solar cell modules 91-92 can be constructed. Thus, compared to the fourth connector 74, costs can be reduced.

[0084] As described in detail above, the solar cell module 1 of the embodiment includes a solar cell element 10, lead wires 11 and 12, connecting wires 21 and 22, and a connector 15. Lead wires 11 and 12 extend from the positive electrode 10p and the negative electrode 10n of the solar cell element 10. Lead wires 11 and 12 are connected to connecting wires 21 and 22. Connectors 15 are disposed at multiple locations to connect connecting wires 21 and 22 to the outside.

[0085] Multiple solar cell modules 1 can be electrically connected via connector 15 through internal connection wiring 21, 22. External wiring for connecting the solar cell modules 1 is not required. Even when multiple solar cell modules 1 are connected in parallel, special wiring for parallel connection is not needed. Therefore, costs can be controlled.

[0086] The solar cell module 1 also has connection wiring 31-34 in connector 15 for external connection.

[0087] The solar cell module 1 has three or more connecting wires 31-34.

[0088] Therefore, it is possible to freely combine series and parallel connections to connect multiple solar cell modules 1.

[0089] The solar cell module 1 has a bypass diode 26 or a fuse 27 in the connecting wiring 21, 22 or the lead wiring 11, 12.

[0090] Therefore, there is no need to add a bypass diode or fuse to the solar cell module 1, which can suppress costs.

[0091] The connecting wires 31-34 or connecting wires 21, 22 are arranged to overlap with the solar cell element 10 when viewed from the thickness direction of the solar cell element 10.

[0092] This enables the miniaturization of the solar cell module 1.

[0093] Figure 10 This is a schematic structural diagram of the solar cell module 1s in the second variation of the implementation. Figure 10 The left side is a top view. Figure 10 The right side is a side sectional view at line S10-S10. The solar cell module 1s of the second variation has a positive electrode connection wire 21 and a negative electrode connection wire 22, two connection wires 31 and 32, and connectors P and Q.

[0094] The positive electrode connection wiring 21 is connected to the positive electrode of the solar cell element 10 via the lead wiring 11. The positive electrode connection wiring 21 is formed only on the +X side of the solar cell element 10.

[0095] The negative electrode connection wiring 22 is connected to the negative electrode of the solar cell element 10 via the lead-out wiring 12. The negative electrode connection wiring 22 is formed only on the -X side of the solar cell element 10.

[0096] Connecting wires 31 and 32 are a first connecting wire 31 and a second connecting wire 32. Connecting wires 31 and 32 are not connected to the positive or negative terminals of the solar cell element 10. Connecting wires 31 and 32 extend longer than the solar cell element 10 in the X direction. Connecting wires 31 and 32 are configured to overlap with the solar cell element 10 when viewed from the Z direction. Connecting wires 31 and 32 can also be configured not to overlap with the solar cell element 10 when viewed from the Z direction. Connecting wires 31 and 32 are used for at least one of series connection and parallel connection of the solar cell element 10.

[0097] Connectors P and Q are the first connector P and the second connector Q. The first connector P is located at the -X side end of the solar cell module 1s. The second connector Q is located at the +X side end of the solar cell module 1s.

[0098] Connectors P and Q have at least one of a positive connection terminal 21q and a negative connection terminal 22p, and connection terminals 31p, 31q, 32p, and 32q. The positive connection terminal 21q connects the positive connection wiring 21 to the outside. The negative connection terminal 22p connects the negative connection wiring 22 to the outside. Connection terminals 31p, 31q, 32p, and 32q connect the connection wirings 31 and 32 to the outside. Connection terminals 31p, 31q, 32p, and 32q are first connection terminals 31p and 31q and second connection terminals 32p and 32q. The first connection terminals 31p and 31q connect the first connection wiring 31 to the outside. The second connection terminals 32p and 32q connect the second connection wiring 32 to the outside.

[0099] Connectors P and Q each have only one positive connection terminal 21q or one negative connection terminal 22p, one first connection terminal 31p, 31q and one second connection terminal 32p, 32q.

[0100] The first connector P has only one negative terminal 22p, one first connection terminal 31p, and one second connection terminal 32p.

[0101] The second connector Q has only one positive connection terminal 21q, one first connection terminal 31q, and one second connection terminal 32q.

[0102] Figure 11 This is a layout diagram of the sixth connector 176. The sixth connector 176 is a circuit formed by connecting the first unit A, the second unit B, and the third unit C in series. The first unit A, the second unit B, and the third unit C are units that connect two solar cell modules 91 and 92 in series. The solar cell modules 91 and 92 of the sixth connector 176 are the solar cell module 1s of the second modified example.

[0103] Figure 12 This is the circuit diagram of the sixth connector 176. The first unit A, the second unit B, and the third unit C are arranged sequentially from the -R side to the +R side. Each unit A, B, and C has two solar cell modules 91 and 92 and one terminal box 151.

[0104] The two solar cell modules 91 and 92 are connected without a terminal box. The second connector Q on the -R side of the solar cell module 91 on the +R side is connected to the first connector P on the +R side of the solar cell module 92 on the -R side. Thus, the solar cell elements 10 of the two solar cell modules 91 and 92 are connected in series.

[0105] Terminal box 151 is disposed on the +R side of two solar cell modules 91, 92. Terminal box 151 has connectors on the -R side and the +R side. The connectors of terminal box 151 have a positive connection terminal 21a or a negative connection terminal 22b, first connection terminals 31a, 31b and second connection terminals 32a, 32b.

[0106] The connector on the -R side of the terminal box 151 has only a negative connection terminal 22b, a first connection terminal 31b, and a second connection terminal 32b. The connector on the -R side of the terminal box 151 is connected to the first connector P on the +R side of the solar cell module 91 on the +R side.

[0107] The connector on the +R side of the terminal box 151 has only a positive connection terminal 21a, a first connection terminal 31a, and a second connection terminal 32a. The connector on the +R side of the terminal box 151 is connected to the second connector Q on the -R side of the solar cell module 92 in the adjacent unit on the +R side.

[0108] The internal wiring structure of the terminal box 151 is as follows. The positive connection terminal 21a on the +R side and the negative connection terminal 22b on the -R side are connected by wiring 20. The first connection terminal 31a on the +R side is connected to wiring 20. Wiring 20 is connected to the first connection terminal 31b on the -R side via bypass diode 46. The second connection terminal 32b on the -R side is connected to the second connection terminal 32a on the +R side.

[0109] The sixth connector 176 has a terminal connector W and a conversion box 170.

[0110] The terminal connector W is located on the -R side of the first unit A at the -R side end. The terminal connector W has a positive connection terminal 21a, a first connection terminal 31a, and a second connection terminal 32a. The second connector Q on the -R side of the solar cell module 92 on the -R side of the first unit A is connected to the terminal connector W. Inside the terminal connector W, the positive connection terminal 21a, the first connection terminal 31a, and the second connection terminal 32a are interconnected.

[0111] The converter box 170 is located on the +R side of the third unit C at the end located on the +R side. The first connection terminal 31a and the second connection terminal 32a on the +R side of the terminal box 151 of the third unit C are respectively connected to the first connection terminal 31b and the second connection terminal 32b on the -R side of the converter box 170. Inside the converter box 170, the first connection terminal 31b on the -R side is connected to the first connection terminal 31a on the +R side. The second connection terminal 32b on the -R side is connected to the second connection terminal 32a on the +R side via an anti-reverse current diode 47. In the converter box 170, the second connection terminal 32a on the +R side becomes the positive terminal of the sixth connector 176, and the first connection terminal 31a on the +R side becomes the negative terminal of the sixth connector 176.

[0112] Through the above, achieve Figure 11 The layout of the sixth connector 176 is shown.

[0113] In the sixth connector 176, multiple solar cell modules 91 and 92 are connected in series using two connecting wires 31 and 32. In the sixth connector 176, the number of solar cell modules connected in series is increased by adding a second variant solar cell module 1s between two solar cell modules 91 and 92 in each unit A, B, and C. The number of solar cell modules in each unit A, B, and C corresponds to the number of solar cell modules bypassed by the bypass diode 46 of the terminal box 151.

[0114] Figure 13 This is a schematic structural diagram of the solar cell module 1s in the third variation of the implementation method. Figure 13 The left side is a top view. Figure 13 The right side is a side sectional view along line S13-S13. Sometimes, descriptions of the third variation, which shares similarities with the second variation, are omitted.

[0115] The solar cell module 1s in the third variation has a bypass diode 26. The bypass diode 26 is disposed between the lead wire 11 of the negative terminal on the -Y side and the positive terminal on the +Y side of the solar cell element 10.

[0116] Figure 14 This is the circuit diagram of the seventh connector 177. The seventh connector 177 is implemented... Figure 5 The layout is shown. The seventh connector 177 is a circuit formed by connecting the first unit A and the second unit B in parallel. The first unit A and the second unit B are circuits formed by connecting three solar cell modules 91, 92, and 93 in series. The solar cell modules 91, 92, and 93 of the seventh connector 177 are solar cell modules 1s of the third variation.

[0117] like Figure 14As shown, the first unit A and the second unit B are arranged sequentially from the -R side to the +R side. Each unit A and B has three solar cell modules 91, 92, and 93 and one terminal box 152. The three solar cell modules 91, 92, and 93 are connected without passing through the terminal box. Thus, the solar cell elements 10 of the three solar cell modules 91, 92, and 93 are connected in series.

[0118] Terminal box 152 is disposed on the +R side of three solar cell modules 91, 92, and 93. The internal wiring structure of terminal box 152 is as follows: The first connection terminal 31a on the +R side and the first connection terminal 31b on the -R side are connected by wiring 31c. The negative connection terminal 22b on the -R side is connected to wiring 31c. The second connection terminal 32b on the -R side and the second connection terminal 32a on the +R side are connected by wiring 32c. The positive connection terminal 21a on the +R side is connected to wiring 32c.

[0119] The seventh connector 177 has a terminal connector W and a conversion box 170.

[0120] Inside the terminal connector W, the positive terminal 21a is connected to the second terminal 32a. Other terminals terminate the connection.

[0121] Through the above, achieve Figure 5 The layout shown.

[0122] In the seventh connector 177, multiple solar cell modules 91, 92, and 93 are connected in series and in parallel using two connecting wires 31 and 32. In the seventh connector 177, by adding a third-modified solar cell module 1s to the middle of the R-direction within a unit, the number of solar cell modules connected in series within the unit increases. In the seventh connector 177, by arranging one and only one terminal box 152 at the +R side end within the unit, multiple units are connected in parallel. In the seventh connector 177, by adding other units between the first unit A and the second unit B, the number of units connected in parallel increases. Thus, in the seventh connector 177, the number of solar cell modules connected in series and in parallel can be flexibly adjusted. Using the third-modified solar cell module 1s, the seventh connector 177 is constructed without external wiring. Therefore, the cost of the seventh connector 177 can be reduced.

[0123] As detailed above, the solar cell module 1s of the second and third modifications has a positive terminal connection wiring 21, a negative terminal connection wiring 22, connection wirings 31 and 32, and multiple connectors P and Q. The connection wirings 31 and 32 are the first connection wiring 31 and the second connection wiring 32. The multiple connectors P and Q each have only one positive terminal connection terminal 21b or one negative terminal connection terminal 22a, one first terminal 31a and 31b, and one second terminal 32a and 32b.

[0124] Therefore, multiple solar cell modules 1s can be connected in series without a terminal box. Since solar cell elements containing silicon semiconductors have high current and low voltage, series connection is common. The solar cell modules 1s of the second and third modifications are suitable for use with solar cell elements 10 containing silicon semiconductors.

[0125] Furthermore, the use of triode connectors as connectors P and Q in the solar cell module 1s can reduce the cost of connectors P and Q. This simplifies the wiring of the solar cell module 1s and further reduces its cost.

[0126] In addition, it can reduce the number and types of terminal boxes. It can simplify the wiring of terminal boxes and make them smaller.

[0127] Figure 15 This is a schematic structural diagram of the solar cell module 1p in the fourth variation of the implementation method. Figure 15 The left side is a top view. Figure 15 The right side is a side sectional view along line S15-S15. The solar cell module 1p of the fourth variation has a positive electrode connection wire 21 and a negative electrode connection wire 22, a connecting wire 31, and connectors P and Q. Sometimes, the description of the fourth variation, which is similar to the second variation, is omitted.

[0128] The positive electrode connection wiring 21 is connected to the positive electrode of the solar cell element 10 via the lead wiring 11. The positive electrode connection wiring 21 extends longer than the solar cell element 10 in the X direction. The positive electrode connection wiring 21 is configured to additionally overlap with the solar cell element 10 when viewed from the Z direction. The positive electrode connection wiring 21 can also be configured not to overlap with the solar cell element 10 when viewed from the Z direction.

[0129] The negative electrode connection wiring 22 is connected to the negative electrode of the solar cell element 10 via the lead-out wiring 12. The negative electrode connection wiring 22 is formed separately on both sides of the solar cell element 10 in the X direction. The negative electrode connection wiring 22 can also be formed continuously in the X direction in the same way as the positive electrode connection wiring 21.

[0130] The connecting wire 31 is a first connecting wire 31. The first connecting wire 31 is not connected to the positive or negative terminal of the solar cell element 10. The first connecting wire 31 extends longer than the solar cell element 10 along the X direction. The first connecting wire 31 is configured to overlap with the solar cell element 10 when viewed from the Z direction. The first connecting wire 31 can also be configured not to overlap with the solar cell element 10 when viewed from the Z direction. The first connecting wire 31 is used for at least one of series connection and parallel connection of the solar cell element 10.

[0131] Connectors P and Q are the first connector P and the second connector Q. The first connector P is disposed at the -X side end of the solar cell module 1p. The second connector Q is disposed at the +X side end of the solar cell module 1p.

[0132] Connectors P and Q have positive connection terminals 21p and 21q, negative connection terminals 22p and 22q, and first connection terminals 31p and 31q. Positive connection terminals 21p and 21q connect positive connection wiring 21 to the outside. Negative connection terminals 22p and 22q connect negative connection wiring 22 to the outside. First connection terminals 31p and 31q connect first connection wiring 31 to the outside.

[0133] Connectors P and Q each have only one positive connection terminal 21p, 21q, one negative connection terminal 22p, 22q, and one first connection terminal 31p, 31q.

[0134] The first connector P has only one negative connection terminal 22p, one positive connection terminal 21p, and one first connection terminal 31p.

[0135] The second connector Q has only one negative connection terminal 22q, one positive connection terminal 21q, and one first connection terminal 31q.

[0136] Figure 16 This is the circuit diagram of the eighth connector 178. The eighth connector 178 is implemented... Figure 7 The layout is shown. The eighth connector 178 is a circuit formed by connecting the first unit A, the second unit B, and the third unit C in series. The first unit A, the second unit B, and the third unit C are two solar cell modules 91 and 92 connected in parallel. The solar cell modules 91 and 92 of the eighth connector 178 are the solar cell module 1p of the fourth variation.

[0137] like Figure 16 As shown, the first unit A, the second unit B, and the third unit C are arranged from the -R side to the +R side in this order. Each unit A, B, and C has two solar cell modules 91 and 92 and one terminal box 161.

[0138] The two solar cell modules 91 and 92 are connected without a terminal box. The second connector Q on the -R side of the solar cell module 91 on the +R side is connected to the first connector P on the +R side of the solar cell module 92 on the -R side. Thus, the solar cell elements 10 of the two solar cell modules 91 and 92 are connected in parallel.

[0139] Terminal box 161 is configured on the +R side of two solar cell modules 91 and 92. Terminal box 161 has connectors on both the -R and +R sides. The connectors of terminal box 161 have positive connection terminals (wiring box positive connection terminals) 21a and 21b, negative connection terminals (wiring box negative connection terminals) 22a and 22b, and first connection terminals (wiring box connection terminals) 31a and 31b.

[0140] The connector on the -R side of the terminal box 161 has only a positive connection terminal 21b, a negative connection terminal 22b, and a first connection terminal 31b. The connector on the -R side of the terminal box 161 is connected to the first connector P on the +R side of the solar cell module 91 on the +R side.

[0141] The connector on the +R side of the terminal box 161 has only a positive connection terminal 21a, a negative connection terminal 22a, and a first connection terminal 31a. The connector on the +R side of the terminal box 161 is connected to the second connector Q on the -R side of the solar cell module 92 in the adjacent unit on the +R side.

[0142] The internal wiring structure of the terminal box 161 is as follows. The positive connection terminal 21a on the +R side and the negative connection terminal 22b on the -R side are connected by wiring 22c. Wiring 22c is connected to the positive connection terminal 21b on the -R side via bypass diode 46. The first connection terminal 31b on the -R side is connected to the first connection terminal 31a on the +R side.

[0143] The eighth connector 178 has a terminal connector W and a conversion box 170.

[0144] The terminal connector W is configured on the -R side of the first unit A, located at the -R side end. The terminal connector W has a positive connection terminal 21a and a first connection terminal 31a. The second connector Q on the -R side of the solar cell module 92 on the -R side of the first unit A is connected to the terminal connector W. Inside the terminal connector W, the positive connection terminal 21a is connected to the first connection terminal 31a.

[0145] The converter box 170 is located on the +R side of the third unit C at the end on the +R side. The positive connection terminal 21a and the first connection terminal 31a on the +R side of the terminal box 161 of the third unit C are respectively connected to the positive connection terminal 21b and the first connection terminal 31b on the -R side of the converter box 170. Inside the converter box 170, the positive connection terminal 21a on the +R side is connected to the positive connection terminal 21b on the -R side. The first connection terminal 31b on the -R side is connected to the first connection terminal 31a on the +R side via an anti-reverse current diode 47. In the converter box 170, the first connection terminal 31a on the +R side becomes the positive terminal of the eighth connector 178, and the positive connection terminal 21a on the +R side becomes the negative terminal of the eighth connector 178.

[0146] Through the above, achieve Figure 7 The layout shown.

[0147] In the eighth connector 178, multiple solar cell modules 91 and 92 are connected in parallel and in series using the first connecting wiring 31. In the eighth connector 178, by adding a fourth-modified solar cell module 1p to the middle of the R-direction within a unit, the number of solar cell modules connected in parallel within the unit increases. In the eighth connector 178, by arranging one and only one terminal box 161 at the +R side end within a unit, multiple units are connected in series. In the eighth connector 178, by adding other units between units A, B, and C, the number of units connected in series increases. Thus, in the eighth connector 178, the number of solar cell modules connected in parallel and in series can be freely adjusted. Using the fourth-modified solar cell module 1p, the eighth connector 178 is constructed without external wiring. Therefore, the cost of the eighth connector 178 can be reduced.

[0148] Figure 17 This is a schematic structural diagram of the solar cell module 1p in the fifth variation of the implementation. Figure 17 The left side is a top view. Figure 17 The right side is a side sectional view along line S17-S17. Sometimes, descriptions of the fifth variation, which shares similarities with the fourth variation, are omitted.

[0149] The solar cell module 1p in the fifth variation has a bypass diode 26. The bypass diode 26 is disposed between the positive lead wire 11 and the negative lead wire 12.

[0150] Figure 18 This is the circuit diagram of the ninth connector 179. The ninth connector 179 implements... Figure 7 The layout is shown. The solar cell modules 91 and 92 of the ninth connector 179 are solar cell modules 1p of the fifth variation.

[0151] like Figure 18 As shown, each unit A, B, and C has one and only one type of terminal box 162. The internal wiring structure of the terminal box 162 is as follows: The positive connection terminal 21a on the +R side is connected to the negative connection terminal 22b on the -R side. The first connection terminal 31b on the -R side is connected to the first connection terminal 31a on the +R side. Other terminals terminate the connection.

[0152] Through the above, achieve Figure 7 The layout shown.

[0153] In the ninth connector 179, by adding a fifth-modified solar cell module 1p to the middle portion in the R direction within the unit, the number of solar cell modules connected in parallel within the unit increases. In the ninth connector 179, multiple units are connected in series by arranging one and only one terminal box 162 at the end on the +R side within the unit. The ninth connector 179 is constructed without external wiring using the fifth-modified solar cell module 1p. Therefore, the cost of the ninth connector 179 can be reduced.

[0154] As detailed above, the solar cell module 1p of the fourth and fifth modifications has a positive connection wiring 21, a negative connection wiring 22, a first connection wiring 31, and multiple connectors P and Q. Each of the multiple connectors P and Q has only one positive connection terminal 21b, one negative connection terminal 22a, and one first connection terminal 31a, 31b.

[0155] Therefore, multiple solar cell modules 1p can be connected in parallel without passing through a terminal box. Solar cell elements containing transmissive cuprous oxide (Cu2O) semiconductors, perovskite semiconductors, etc., have high voltage and low current, so they are mostly connected in parallel. The solar cell module 1p of the fourth and fifth modifications is suitable for the case of solar cell elements 10 containing transmissive cuprous oxide (Cu2O) semiconductors, perovskite semiconductors, etc.

[0156] Furthermore, the use of three-pole connectors for P and Q can reduce the cost of connectors P and Q. This simplifies the wiring of the solar cell module 1p and reduces its cost.

[0157] In addition, it can reduce the number and types of terminal boxes. It can simplify the wiring of terminal boxes and make them smaller.

[0158] In the described embodiment, connectors 15 are arranged on both sides of the solar cell module 1 in the X direction. This allows multiple solar cell modules 1 to be connected and arranged along the X direction. Alternatively, a pair of connectors 15 can be arranged on one side of the solar cell module 1 in either the X or Y direction. For example, a pair of connectors 15 can be arranged on the +Y side of the solar cell module 1. In this case, multiple solar cell modules 1 can be arranged and connected in an alternating manner. Furthermore, the solar cell module 1 may have three or more connectors 15. In this case, multiple solar cell modules 1 can be freely arranged and connected to fit various installation locations.

[0159] In the described embodiment, a bypass diode 26 or a fuse 27 is formed inside the solar cell module 1. Alternatively, a bypass diode or fuse may be formed inside the terminal box.

[0160] According to at least one embodiment described above, a connection wiring 21, 22 and a connector 15 are included. The connector 15 is disposed at multiple locations to connect the connection wiring 21, 22 to the outside. This allows for cost reduction.

[0161] Several embodiments of the present invention have been described, but these embodiments are given by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the scope of the invention as set forth in the claims and its equivalents.

[0162] Explanation of reference numerals in the attached figures A…First unit (unit), B…Second unit (unit), C…Third unit (unit), 1, 1p, 1s, 91, 92, 93…Solar cell module, 10…Solar cell element, 10n…Negative electrode, 10p…Positive electrode, 11…Positive electrode lead-out wiring (lead-out wiring), 12…Negative electrode lead-out wiring (lead-out wiring), 15, P, Q…Connector, 21…Positive electrode connection wiring (connection wiring), 21p, 21q…Positive electrode connection terminal, 22…Negative electrode connection wiring (connection wiring), 22p, 22q…Negative electrode connection terminal, 26…Bypass diode, 27…Fuse, 31…First connection wiring (connection wiring), 31p, 31 q… First connection terminal (connection terminal), 32… Second connection wiring (connection wiring), 32p, 32q… Second connection terminal (connection terminal), 33… Third connection wiring (connection wiring), 34… Fourth connection wiring (connection wiring), 51, 52, 61, 62… Terminal box, 71… First connector (connector), 72… Second connector (connector), 73… Third connector (connector), 74… Fourth connector (connector), 75… Fifth connector (connector), 76… Sixth connector (connector), 77… Seventh connector (connector), 78… Eighth connector (connector), 79… Ninth connector (connector).

Claims

1. A solar cell module, comprising: Solar cell elements; The positive electrode connection wiring is connected to the positive electrode of the solar cell element; The negative terminal connection wiring is connected to the negative terminal of the solar cell element; Connecting wiring, not connected to the positive or negative electrode, but used for at least one of series and parallel connections of the solar cell elements; and Multiple connectors, Each of the plurality of connectors has: At least one of the positive terminal connecting the positive connection wire to the outside and the negative terminal connecting the negative connection wire to the outside; and A connection terminal that connects the connection wiring to the outside.

2. The solar cell module according to claim 1, wherein, It has three or more of the aforementioned connecting wires.

3. The solar cell module according to claim 1 or 2, wherein, It has a bypass diode or fuse.

4. The solar cell module according to claim 1 or 2, wherein, At least one of the positive electrode connection wiring, the negative electrode connection wiring, and the connecting wiring is configured to overlap with the solar cell element when viewed from the thickness direction of the solar cell element.

5. The solar cell module according to claim 1, wherein, The connection wiring is the first connection wiring and the second connection wiring. The connection terminals are a first connection terminal that connects the first connection wiring to the outside and a second connection terminal that connects the second connection wiring to the outside. Each of the plurality of connectors has only one of the positive connection terminals or one of the negative connection terminals, one of the first connection terminals, and one of the second connection terminals.

6. The solar cell module according to claim 1, wherein, Each of the plurality of connectors has only one positive connection terminal, one negative connection terminal, and one connection terminal.

7. The solar cell module according to claim 1, wherein, By connecting multiple solar cell modules directly or indirectly via a terminal box, a unit can be formed that connects the multiple solar cell modules in series or in parallel. By connecting multiple units directly or indirectly via a terminal box, a connection body can be formed by connecting the multiple units in series or in parallel.

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