JP7325199B2 - SOLAR MODULE, REPAIRED SOLAR MODULE, AND METHOD FOR REPAIRING SOLAR MODULE - Google Patents

Description

The present invention relates to a solar cell module, a repaired solar cell module, and a method of repairing a solar cell module.

Conventionally, there is known a see-through solar cell module that can transmit a part of sunlight in the thickness direction. It is used in applications (for example, Patent Document 1).
In a conventional see-through solar cell module, solar cells having a large light-receiving surface area are laid out, and the space between the adjacent solar cells is used for daylighting.

JP-A-2001-339088

Since the see-through solar cell module generally uses the light received by the power generating portion of the solar cell, the power generating portion is darker than the light receiving portion. Therefore, since the conventional see-through solar cell module has a large power-generating part, when it is used as a translucent building material such as a window, the power-generating part becomes dark and conspicuous, and the design is impaired by the power-generating part. Ta.

Therefore, the present inventor made a prototype of a solar cell module using a solar cell with a small power generation portion in order to make the power generation portion of the solar cell inconspicuous. That is, a solar cell panel capable of generating electricity by itself is subdivided into strips by folding, these solar cells are connected by interconnectors to form a solar cell string, and these solar cell strings are arranged in a plane. Then, a solar cell module connected by a wiring member was prototyped.
The prototype solar battery module has small pieces of solar cells arranged side by side, so even if the power generating part is dark, the space between the light receiving parts is narrow, so the light enters from the light receiving part, making the power generating part less noticeable than before. Ta.

However, a new problem occurred in the prototype solar cell module.
In other words, when the solar cells are subdivided, the width of the solar cells becomes narrower and the number of the solar cells increases. Some solar cells did not generate electricity. If there is a solar cell that does not generate power, the solar cell string to which the solar cell that does not generate power cannot generate power, and there is a problem that the power generation efficiency as designed cannot be obtained.

Therefore, the present invention provides a solar cell module that can ensure normal power generation function even when a solar cell string that does not generate power due to initial failure or the like occurs, a repaired solar cell module that has been repaired, and a method for repairing a solar cell module. intended to provide

A solar string using segmented solar cells has a significantly lower cost than a conventional solar string. Therefore, even if one solar cell string is increased, the cost does not increase significantly.
Therefore, the present inventors have found that by mounting a spare solar cell string, even if a solar cell string does not generate power due to an initial failure or the like, the solar cell string can be replaced with a spare solar cell string. It was considered that it would be possible to achieve the power generation efficiency as set.

One aspect of the present invention derived from the considerations described above has a first substrate and a second substrate, and has a plurality of solar cells between the first substrate and the second substrate. A solar cell module in which battery strings are disposed and a space between the first substrate and the second substrate is sealed with a sealing material, wherein each of the plurality of solar cell strings is subjected to an external load. There are a power generation side solar cell string electrically connected in parallel to the solar cell string and a spare solar cell string electrically open to the external load, which are outside the sealing material and in the thickness direction. Inside the first base and the second base, one power generating side solar cell string is electrically open to the external load, and the spare solar cell string is electrically connected to the external load. It is possible, a solar cell module.
The above aspect has a first substrate and a second substrate, a plurality of solar cell strings are arranged between the first substrate and the second substrate, and the first substrate and the A solar cell module sealed between itself and a second substrate with a sealing material, wherein the plurality of solar cell strings includes power generating side solar cells electrically connected in parallel to an external load. a string and a spare solar cell string electrically open to the external load, wherein one power generating side solar cell string is electrically open to the external load outside the encapsulant; It relates to a solar cell module, wherein said spare solar cell string is electrically connectable to said external load.

According to this aspect, it is possible to electrically open the power generating side solar cell string to an external load outside the encapsulant and electrically connect the spare solar cell string to the external load. Therefore, even if one power-generating-side solar cell string does not generate power at the time of installation due to a failure or the like, the one power-generating-side solar cell string is electrically disconnected from the external load, and the spare solar cell string is connected to the external load. By connecting, it is possible to generate power with the designed power generation capacity.

In a preferred aspect, the solar cell string has a series connection group in which a plurality of solar cells are electrically connected in series via conductors, and an extraction wiring for extracting electricity from the series connection group, The first base material or the second base material has a power generation side through hole and a spare side through hole penetrating in the thickness direction, and the power generation side solar cell string has the extraction wiring and/or the conductor. It is exposed from the opening of the power generation side through-hole, and in the spare solar cell string, part of the extraction wiring is broken, the extraction wiring is exposed from the opening of the spare-side through hole, and the exposed part has a broken part. preferably located.

A preferred aspect has a connection circuit, and the solar cell string has a series connection group in which a plurality of solar cells are electrically connected in series, and an extraction wiring for extracting electricity from the series connection group. and the connection circuit electrically connects the extraction wirings of the power generating side solar cell strings outside the sealing material, and the auxiliary solar cell string is connected to the auxiliary solar cell string. The battery string is electrically open to the power generation side solar battery string.

One aspect of the present invention is a repaired solar cell module obtained by repairing the above solar cell module in which an abnormality has occurred in one power generating side solar cell string, A conductor is disconnected in the power generation side through-hole, electrically connects the disconnection portion of the extraction wiring in the backup side through-hole, and electrically connects the spare solar cell string to the external load. A repaired solar module comprising a connecting member that connects to the .

One aspect of the present invention is a repaired solar cell module obtained by repairing the above solar cell module in which one of the solar cell strings on the power generation side has an abnormality, wherein the connection circuit is partially broken and the one is electrically open to the other power generation side solar cell string, and the spare solar cell string is electrically connected to the other power generation side solar cell string. .

One aspect of the present invention has a first substrate and a second substrate, a plurality of solar cell strings are arranged between the first substrate and the second substrate, and the first substrate A method for repairing a solar cell module in which a space between a material and a second base material is sealed with a sealing material, wherein a plurality of solar cell strings are electrically connected in parallel to an external load. A method for repairing a solar cell module having a solar cell string on the power generation side and a spare solar cell string electrically disconnected from the external load, the method for repairing a solar cell module having an abnormality in one of the solar cell strings on the power generation side. and electrically opening the one power generation side solar cell string to the external load outside the encapsulant and inside the first base material and the second base material in the thickness direction. and electrically connecting the spare solar cell string to the external load.
The above aspect has a first substrate and a second substrate, a plurality of solar cell strings are arranged between the first substrate and the second substrate, and the first substrate and the A method for repairing a solar cell module whose space between itself and a second substrate is sealed with a sealing material, wherein a plurality of solar cell strings are electrically connected in parallel to an external load on a power generating side. A method for repairing a solar cell module having a solar cell string and a spare solar cell string electrically open to the external load, wherein the sealing is performed when one power generating side solar cell string has an abnormality. Repairing a solar cell module by electrically disconnecting the one power generating side solar cell string from the external load and electrically connecting the backup solar cell string to the external load outside the fastener. related to the method.

According to this aspect, the solar cell string to be used can be changed from the power generation side solar cell string to the spare solar cell string, and the same function as the solar cell module in the normal state can be exhibited.

One aspect of the present invention has a first substrate and a second substrate, a plurality of solar cell strings are arranged between the first substrate and the second substrate, and the first substrate A solar cell module in which a space between a material and a second base material is sealed with a sealing material, wherein the first base material, the second base material, the plurality of solar cell strings, and the sealing material are Each solar cell string has a series connection group in which a plurality of solar cells are electrically connected in series, and an extraction wiring for extracting electricity from the series connection group. The wiring extends inside and outside the main body portion when the first base material is viewed in plan, and one end side of each extraction wiring is exposed from the sealing material and outside the sealing material. Solar cell modules that can be connected to each other directly or via other members.
The above aspect has a first substrate and a second substrate, a plurality of solar cell strings are arranged between the first substrate and the second substrate, and the first substrate and the A solar cell module in which a space between the second substrate and the second substrate is sealed with a sealing material, wherein each solar cell string includes a series connection group in which a plurality of solar cells are electrically connected in series; An extraction wiring is provided for extracting electricity from the connection group, and one end of each extraction wiring is exposed from the sealing material, and can be connected to each other outside the sealing material directly or via another member. related to solar modules.

According to this aspect, even if one solar cell string fails to generate power due to failure or the like, power can be generated with the designed power generation capacity by connecting the solar cell strings other than the failed solar cell string to an external load. .
According to this aspect, since it is possible to connect the extraction wirings outside the sealing material, it is easy to change the layout of the connection between the extraction wirings, and the output can be adjusted by the number of solar cell strings to be connected. be.

According to the solar cell module and the method for repairing the solar cell module of the present invention, normal power generation function can be ensured even when a solar cell string does not generate power due to initial failure or the like.
According to the repaired solar cell module of the present invention, a normal power generation function can be maintained while a solar cell string that does not generate power due to an initial failure or the like is mounted.

1 is a perspective view schematically showing an installation situation of a solar cell module according to a first embodiment of the present invention; FIG. FIG. 2 is a partially broken perspective view of the periphery of the solar cell module of FIG. 1; FIG. 2 is an exploded perspective view of the solar cell module of FIG. 1; FIG. 2 is a plan view of the solar cell module of FIG. 1, omitting a first translucent substrate; FIG. 2 is an electrical circuit diagram of the solar cell module of FIG. 1; FIG. 2 is an explanatory diagram of the solar cell module of FIG. 1, where (a) is a cross-sectional view of a spare solar cell string and (b) is a cross-sectional view of a power generation side solar cell string; FIG. 4 is a perspective view of the solar cell of FIG. 3; FIG. 8 is a perspective view of the photovoltaic cell of FIG. 7 as seen from a direction different from that of FIG. 7; It is explanatory drawing of the photovoltaic cell of FIG. 7, (a) is a top view, (b) is a bottom view. FIG. 10 is an explanatory diagram of the solar battery cell of FIG. 9, where (a) is a cross-sectional view taken along line AA of FIG. 9(b), and (b) is a cross-sectional view taken along line BB of FIG. 9(b); FIG. 2 is an exploded perspective view of a main part of the solar cell module of FIG. 1; It is explanatory drawing of the interconnector of FIG. 4, (a) is a perspective view of a straight interconnector, (b) is a perspective view of a folded interconnector. FIG. 5 is a perspective view around a straight interconnector of the solar cell module of FIG. 4; 5 is a perspective view of the periphery of the folded interconnector of the solar cell module of FIG. 4; FIG. 5 is a perspective view of the periphery of the extraction wiring of the solar cell module of FIG. 4; FIG. FIG. 8 is an explanatory view of an in-process solar cell panel that is a raw material of the solar cell of FIG. 7, (a) is a plan view of the in-process solar cell panel, and (b) is a bottom view of the in-process solar cell panel. The cut portion is indicated by a two-dot chain line. 1 is a block diagram of a management system according to a first embodiment of the present invention; FIG. 2A is an electric circuit diagram of the solar cell module before repair, and FIG. 3B is an electric circuit diagram of the solar cell module after repair. FIG. 2A is a perspective view showing a state in which a lid portion to be cut is removed, and FIG. 4B is a perspective view showing a state in which an interconnector is cut; FIG. It is a figure and (c) is a perspective view showing the state after cutting|disconnection of an interconnector. 2A is a perspective view showing a state in which a lid to be connected is removed, and FIG. 4B is a perspective view showing a state in which the lid is attached; FIG. , and (c) is a perspective view showing a state in which the lid is attached. FIG. 4 is a plan view of a solar cell module according to a second embodiment of the present invention, omitting a frame member and a first translucent substrate; FIG. 22 is an exploded perspective view of a terminal box of the solar cell module of FIG. 21; FIG. 22 is an exploded perspective view of the essential parts of the solar cell module of FIG. 21; 22A is an electric circuit diagram of the solar cell module before repair, and FIG. 22B is an electric circuit diagram of the solar cell module after repair. FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail.

As shown in FIG. 1, the solar cell module 1 of the first embodiment of the present invention is mainly used as a wall building material such as a window. It is used in posture.
The solar cell module 1 is a double-sided see-through solar cell module, has a lighting function, and is capable of partially transmitting light in the thickness direction. Moreover, the solar cell module 1 is a double-sided light-receiving solar cell module capable of receiving light on both front and back sides to generate power.
The solar cell module 1 is managed by a management system 300 in each manufacturing process shown in FIG.

As shown in FIGS. 2, 3, and 4, the solar cell module 1 includes a main body 2 and terminal boxes 3a and 3b. , is connected to the external load 150 shown in FIG.

As shown in FIGS. 4 and 6, the body portion 2 includes, as main constituent members, a first translucent substrate 10 (first base material), a second translucent substrate 11 (second base material), and a plurality of substrates. solar cell string 12 (series connection group), first extraction wiring 14, second extraction wiring 15, and sealing materials 16a and 16b. In the main body 2, a plurality of solar cell strings 12 and lead-out wirings 14 and 15 are arranged between the two translucent substrates 10 and 11, and the space between the translucent substrates 10 and 11 is sealed. It is filled with materials 16a and 16b.

Since the solar cell module 1 of the present embodiment is a double-sided solar cell module, there is no front and back. , the second translucent substrate 11 side will be described as the back side.

As shown in FIG. 3, the light-transmitting substrates 10 and 11 are plate-like members that spread out in a plane, and in this embodiment, have a rectangular shape. The translucent substrates 10 and 11 are members having translucency and insulating properties, and for example, translucent insulating substrates such as glass substrates can be used.

As shown in FIG. 3, the first translucent substrate 10 is composed of a substrate body 20 and cover members 21a to 21f.
The substrate body 20 has a plurality of through holes 22a to 22f penetrating in the thickness direction.
The through holes 22a to 22f are working holes for cutting or connecting the extraction wiring 14 from the outside.
The cover members 21a to 21f are members for closing the through holes 22a to 22f, and have the same or similar shape to the opening shape of the through holes 22a to 22f.

On the other hand, unlike the first translucent substrate 10, the second translucent substrate 11 does not have the through holes 22a to 22f.

The solar cell string 12 is composed of a plurality of solar cells 30, interconnectors 31a and 31b (conductors), a conductive adhesive 32, an insulating protective material 33, and a colored layer 34 as main constituent members. , the solar cells 30 are electrically and physically connected in series via interconnectors 31a and 31b.
As shown in FIG. 3, the solar cell string 12 of the present embodiment extends meandering between the translucent substrates 10 and 11 when the first translucent substrate 10 is viewed from above. is a positive electrode side end portion 35 and the other end is a negative electrode side end portion 36 .

As shown in FIG. 5, the solar cell string 12 of this embodiment includes power generation side solar cell strings 37a to 37e electrically connected in parallel to the external load 150 and electrically open to the external load 150. There is a spare solar cell string 38 . That is, the solar cell module 1 of the present embodiment is mounted with the spare solar cell string 38 that does not contribute to power generation during power generation.

The photovoltaic cell 30 is a photovoltaic piece obtained by cutting the in-process photovoltaic panel 200 capable of generating electricity by connecting to the external load 150 into strips, and is a vertically long rectangular piece. That is, the solar cell 30 extends in the vertical direction Y with a width in the horizontal direction X as shown in FIG.
The solar cell 30 of this embodiment includes a first electrode layer 40, a photoelectric conversion section 41, and a second electrode layer 42, as shown in FIG.

The first electrode layer 40 is an electrode layer provided on the front side (first translucent substrate 10 side), and is composed of a base electrode layer 45 and a first collecting electrode 46 .
The base electrode layer 45 is an electrode layer that serves as a base for the first collector electrode 46 and is a conductive layer that extracts electricity from the photoelectric conversion section 41 . The base electrode layer 45 of this embodiment is made of a transparent conductive oxide such as indium tin oxide (ITO).
The first collector electrode 46 is a conductive layer partially laminated on the base electrode layer 45, and is composed of a busbar electrode portion 50, first finger electrode portions 51a to 51e, and second finger electrode portions 52a to 52c. It is
The first collecting electrode 46 is made of a material having a higher electrical conductivity than the base electrode layer 45, and in this embodiment, is made of a metal such as gold, silver, aluminum, copper, palladium, or a metal alloy thereof. .

As shown in FIG. 7, the busbar electrode portion 50 is an electrode portion that is unevenly distributed toward one side end portion from the center in the longitudinal direction (vertical direction Y) and extends in the width direction (horizontal direction X).
13, 14, and 15, the busbar electrode portion 50 is a portion that functions as a land to which the interconnectors 31a, 31b or the extraction wirings 14, 15 are connected via the conductive adhesive 32. FIG.
The width of the busbar electrode portion 50 is preferably 1 mm or more and 8 mm or less.

The first finger electrode portions 51a to 51e are linear portions extending in the longitudinal direction (vertical direction Y) from the intermediate portion in the lateral direction X of the busbar electrode portion 50, as shown in FIG.
The first finger electrode portions 51a to 51e are arranged in parallel in the horizontal direction X with a gap therebetween, and all of them extend to the vicinity of the ends in the vertical direction Y. As shown in FIG.
The width of the first finger electrode portions 51a to 51e is narrower than the width of the busbar electrode portion 50, preferably 30 μm or more and 70 μm or less.

As shown in FIG. 7, the first finger electrode portions 51a to 51e have terminal electrode portions 54 and 55 at both ends in the longitudinal direction (longitudinal direction Y).
One end electrode portion 54 is a portion extending from the busbar electrode portion 50 to one end in the longitudinal direction, and the other end electrode portion 55 is a second finger electrode portion that is the farthest from the busbar electrode portion 50 in the longitudinal direction. 52c to the other end in the longitudinal direction.
The terminal electrode portion 54 has overhanging portions 56a and 56b projecting outward from the ends of the base electrode layer 45, and the terminal electrode portion 55 has overhanging portions 56a from the ends of the base electrode layer 45. , and 56b.
In practice, it is rare that the protrusions 56a, 56b, 57a, and 57b occur, and even if they do occur, they hardly protrude. In the present embodiment, for convenience of explanation, it is assumed that there are projecting portions 56a, 56b, 57a, and 57b, and the representation is exaggerated.

The terminal electrode portion 55 is provided with a position information display portion 58 as shown in FIG.
The position information display section 58 is a section that displays information on each solar cell 30 and/or related information associated with the information on each solar cell 30. The in-process solar cell panel serving as the division source shown in FIG. 200 information and the positional information of the in-process solar panel 200 before division can be directly or indirectly displayed.
As shown in FIG. 9, the position information display section 58 of this embodiment is configured by a part of the terminal electrode sections 55 of the plurality of first finger electrode sections 51a, 51b, and 51d.
Specifically, the terminal electrode portions 55 of the predetermined first finger electrode portions 51a, 51b, and 51d are provided with overhanging portions in the lateral direction X, and the cutting positions in the in-process solar cell panel 200 are determined according to the overhanging positions of the overhanging portions. information is displayed. That is, the positions of the position information display portions 58 are different for each solar battery cell 30, and the position information of the in-process solar battery panel 200 before division can be displayed depending on the positional relationship.

As shown in FIG. 9, the second finger electrode portions 52a to 52c are linear portions extending parallel to the busbar electrode portion 50 and perpendicular to the first finger electrode portions 51a to 51e.
The second finger electrode portions 52a to 52c are arranged in parallel in the vertical direction Y with a gap therebetween, and all of them extend to near the ends in the horizontal direction X. As shown in FIG.
The width of each of the second finger electrode portions 52a to 52c is narrower than the width of the busbar electrode portion 50, preferably 30 μm or more and 70 μm or less.

The photoelectric conversion part 41 is a part that converts light energy into electric energy.
The solar cell 30 of the present embodiment is a crystalline solar cell, and the photoelectric conversion section 41 is formed by laminating a semiconductor layer on a semiconductor substrate, and has a PN junction between the semiconductor substrate and the semiconductor layer. ing.

The second electrode layer 42 forms a pair with the first electrode layer 40 and is an electrode layer provided on the back side (the second translucent substrate 11 side). It is composed of two collector electrodes 66 .

The base electrode layer 65 is an electrode layer that serves as a base for the second collector electrode 66 and is a conductive layer that extracts electricity from the photoelectric conversion section 41 . The base electrode layer 65 of this embodiment is made of a transparent conductive oxide such as indium tin oxide (ITO).

The second collector electrode 66 is a conductive layer partially laminated on the base electrode layer 65, and as shown in FIG. It is composed of parts 72a to 72c.
The second collector electrode 66 is made of a material having a higher conductivity than the underlying electrode layer 65, and in this embodiment, is made of a metal such as gold, silver, aluminum, copper, palladium, or a metal alloy thereof. .

The busbar electrode portion 70 is an electrode portion that is unevenly distributed from the center in the longitudinal direction (vertical direction Y) to one side end portion and extends in the width direction (horizontal direction X). It is provided on the side opposite to the portion 50 and extends in the lateral direction X. As shown in FIG.
The busbar electrode portion 70 is a portion that functions as a land to which the extraction wirings 14, 15 or the interconnectors 31a, 31b are connected via the conductive adhesive 32. As shown in FIG.
The width of the busbar electrode portion 70 is preferably 1 mm or more and 8 mm or less.

The first finger electrode portions 71a to 71e are linear portions extending in the longitudinal direction (vertical direction Y) from the intermediate portion in the lateral direction X of the busbar electrode portion 70, as shown in FIG.
The first finger electrode portions 71a to 71e are arranged side by side at intervals in the horizontal direction X (width direction), and all extend to the vicinity of the ends in the vertical direction Y. As shown in FIG.
The width of the first finger electrode portions 71a to 71e is narrower than the width of the busbar electrode portion 70, and is preferably 30 μm or more and 70 μm or less.

As shown in FIG. 9, the first finger electrode portions 71a to 71e have terminal electrode portions 74 and 75 at both ends in the longitudinal direction (longitudinal direction Y).
One end electrode portion 74 is a portion extending from the busbar electrode portion 70 to one end in the longitudinal direction, and the other end electrode portion 75 is a second finger electrode portion that is the farthest from the busbar electrode portion 70 in the longitudinal direction. 72c to the other end in the longitudinal direction.

The second finger electrode portions 72a to 72c are linear portions extending parallel to the busbar electrode portion 70 and perpendicular to the first finger electrode portions 71a to 71e.
The second finger electrode portions 72a to 72c are arranged side by side in the vertical direction Y at intervals, and all of them extend to the vicinity of the end portion in the horizontal direction X. As shown in FIG.
The width of each of the second finger electrode portions 72a to 72c is narrower than the width of the busbar electrode portion 70, and preferably 30 μm or more and 70 μm or less.

The interconnectors 31a, 31b are connection members that electrically and physically connect the solar cells 30, 30 adjacent in the horizontal direction X or the vertical direction Y. As shown in FIG.

The interconnector 31a is a linear interconnector that connects two adjacent photovoltaic cells 30, 30 and linearly connects them in the vertical direction Y, as shown in FIGS.
The interconnector 31a includes a first connector portion 80, a second connector portion 81, and a first connection portion 82 that connects the connector portions 80 and 81, as shown in FIG. 12(a).

As can be read from FIGS. 12(b) and 14, the interconnector 31b constitutes a folded portion of the solar cell string 12 when the first translucent substrate 10 is viewed from above, and is adjacent to the lateral direction X. It is a folded interconnector that connects two solar cells 30 , 30 .
The interconnector 31b includes a third connector portion 85, a fourth connector portion 86, and a second connection portion 87 that connects the connector portions 85 and 86, as shown in FIG. 12(b).

Information display portions 88a and 88b are provided in the third connector portion 85 and the fourth connector portion 86 of the interconnector 31b, and the information of the solar cells 30 in each row connected by the interconnector 31a is displayed directly or indirectly. It is possible to display
The information display portions 88a and 88b are the in-process solar battery panels that are the division sources of the solar battery cells 30 in the row of the solar battery cells 30 connected in the vertical direction Y by the interconnector 31a (hereinafter also referred to as the solar battery row). 200 information and the position information of the in-process solar cell panel 200 before division of each solar cell 30 in the solar cell array can be directly or indirectly displayed.
The information display units 88a and 88b of the present embodiment are one-dimensional codes or two-dimensional codes that are related information linked to the solar cell information, and are read by the reading unit 305 of the reading device 302, which will be described later. It is possible to read the information of the photovoltaic cell 30 .

The conductive adhesive 32 is an adhesive that electrically and physically connects the busbar electrode portions 50, 70 and the interconnectors 31a, 31b or the busbar electrode portions 50, 70 and the extraction wirings 14, 15. Adhesive.
In this embodiment, the conductive adhesive 32 is a conductive adhesive film having conductive adhesives provided on both sides of the conductive film.

The insulating protective material 33 is an insulating protective layer that has insulating properties and covers and protects the longitudinal end surfaces of the solar cells 30 as shown in FIG. 11 .
The insulation protection material 33a buries the protruding parts 56a and 56b of the terminal electrode part 54 and can prevent contact between the protruding parts 57a and 57b and the interconnector 31a. The overhanging portions 57a and 57b of the portion 55 are buried to prevent contact between the overhanging portions 57a and 57b and the interconnector 31b.

The colored layer 34 is a layer colored in a color different from that of the interconnector 31a, and is a layer that partially covers the interconnector 31a as shown in FIG.
The colored layer 34 has the same color as the color of the photovoltaic cell 30, and is colored closer to the color of the photovoltaic cell 30 than the color of the interconnector 31a.

The extraction wirings 14 and 15 are wirings for extracting electricity from each solar cell string 12 to the outside of the main body 2 .
The extraction wiring 14 is a positive-side wiring having one end connected to the positive-side end 35 of each solar cell string 12 and the other end electrically connected to the cable member 6a within the terminal box 3a. wiring.
As shown in FIG. 5, the extraction wiring 14 includes a main wiring portion 90 connected to the terminal box 3a and a branch wiring branching from the end portion of the main wiring portion 90 toward the positive electrode side end portion 35 of each solar cell string 12. It has parts 91a to 91f.
Of the branched wiring portions 91a to 91f, the branched wiring portion 91a connected to the spare solar cell string 38 is partially cut to form a disconnection portion 92 (disconnection portion). That is, the branch wiring portion 91a is divided into the main wiring portion 90 side and the spare solar cell string 38 side.

The extraction wiring 15 is a negative-side wiring having one end connected to the negative-side end 36 of each solar cell string 12 and the other end electrically connected to the cable member 6b within the terminal box 3b. wiring.
The extraction wiring 15 includes a main wiring portion 95 connected to the terminal box 3b, and branch wiring portions 96a to 96f branching from the end portion of the main wiring portion 95 toward the negative electrode side end portion 36 of each solar cell string 12. ing.

The sealing materials 16a and 16b are translucent adhesives that adhere between the translucent substrates 10 and 11 as shown in FIG. and sealed.
The sealing members 16a and 16b of the present embodiment are insulating resin sheets, specifically EVA (ethylene-vinyl acetate copolymer resin) sheets.

The terminal boxes 3a, 3b have cable members 6a, 6b and box portions 7a, 7b. Inside the box portion 7, the extraction wirings 14, 15 connected to the solar cell string 12 are connected. .

Next, the positional relationship of each member of the solar cell module 1 of this embodiment will be described.

As shown in FIG. 3, the translucent substrates 10 and 11 are arranged to face each other, and sealing materials 16a and 16b are laminated on the two opposing surfaces. Each solar cell string 12 is arranged between the translucent substrates 10 and 11 and embedded in the sealing materials 16a and 16b.
Each solar cell string 12 extends in the vertical direction Y as a whole and is arranged in the horizontal direction X as shown in FIG.

The opening of the through-hole 22a (reserve-side through-hole) of the first translucent substrate 10 corresponds to the disconnection portion of the branch wiring portion 91a connected to the spare solar cell string 38 when the first translucent substrate 10 is viewed from above. It overlaps with 92. That is, the disconnection portion 92 of the branch wiring portion 91a is arranged at a position exposed from the through hole 22a when the lid member 21a is removed.

The openings of the through holes 22b to 22f (power generation side through holes) of the first translucent substrate 10 are branch wirings connected to the power generation side solar cell strings 37a to 37e when the first translucent substrate 10 is viewed from above. It overlaps with the portions 91b to 91f. That is, the branch wiring portions 91b to 91f are arranged at positions exposed from the through holes 22b to 22f when the cover members 21b to 21f are removed.

The busbar electrode portions 50, 70 extend in the width direction (horizontal direction X) of the interconnectors 31a, 31b.
In the straight interconnector 31a, as shown in FIG. 13, the first connector portion 80 is connected to the busbar electrode portion 50 of the first collecting electrode 46 of one solar cell 30a via the conductive adhesive 32, 2 connector portion 81 is connected to busbar electrode portion 70 of second collecting electrode 66 of another solar cell 30b via conductive adhesive 32 .
In the straight interconnector 31a, when viewed from above, the first connector portion 80 overlaps the end electrode portion 54 of the first finger electrode portions 51a to 51e of one solar cell 30a, and the second connector portion 81 overlaps the other. end electrode portions 74 of the first finger electrode portions 71a to 71e of the solar cell 30b.

As shown in FIG. 13, the linear interconnector 31a is covered with a colored layer 34 having a color different from that of the interconnector 31a, and has an exposed portion 84 partially exposed from the colored layer 34 .
The exposed portion 84 of the straight interconnector 31 a is connected to the busbar electrode portions 50 and 70 via the conductive adhesive 32 .
The colored layer 34 is provided over the photovoltaic cell 30 from the linear interconnector 31a.

In the folded interconnector 31b, as shown in FIG. 14, the third connector portion 85 is connected to the busbar electrode portion 70 of the second collector electrode 66 of one solar cell 30c via the conductive adhesive 32, and the The 4-connector portion 86 is connected to the busbar electrode portion 50 of the first collecting electrode 46 of the other solar cell 30 d via the conductive adhesive 32 .
In the folded interconnector 31b, when viewed from above, the third connector portion 85 overlaps the terminal electrode portion 74 of the first finger electrode portions 71a to 71e of one solar cell 30c, and the fourth connector portion 86 overlaps with the terminal electrode portion 74 of the first finger electrode portions 71a to 71e of one solar cell 30c. end electrode portions 54 of the first finger electrode portions 51a to 51e of the solar cell 30d.

As shown in FIG. 15 , one end of the extraction wiring 14 is connected to the busbar electrode portion 50 of the first collecting electrode 46 of the solar cell 30 via the conductive adhesive 32 . The lead-out wiring 14 overlaps the terminal electrode portions 54 of the first finger electrode portions 51a to 51e of the solar battery cell 30 in the vicinity of one end when viewed from above. Similarly, one end of the extraction wiring 15 is connected to the busbar electrode portion 70 of the second collecting electrode 66 of the solar cell 30 via the conductive adhesive 32 . The lead-out wiring 15 overlaps the terminal electrode portions 74 of the first finger electrode portions 71a to 71e of the solar cell 30 in the vicinity of one end thereof when viewed from above.

The insulating protective material 33 covers the end surfaces of the solar cells 30 so that the projecting portions 56a, 56b, 57a, 57b of the first finger electrode portions 51b, 51d, 51b, 51e are buried.

As shown in FIG. 14, the position information display portion 58 of the photovoltaic cell 30 does not overlap with the interconnectors 31a and 31b and is located outside the interconnectors 31a and 31b. That is, the position information display section 58 is not hidden by the interconnectors 31a and 31b and is exposed to the outside.
In the interconnector 31a, the portion between the solar cells 30, 30 adjacent in the vertical direction Y, which are to be connected, is colored closer to the color of the solar cell 30 than the color of the interconnectors 31a, 31b by the colored layer 34. Colored.

As shown in FIGS. 1 and 2, the frame member 100 is a member that covers the four sides of the main body 2 and the terminal boxes 3a and 3b, and is a rectangular annular holding member when viewed from the front.
The frame member 100 includes a first covering portion 101 that covers the main body portion 2 on the first translucent substrate 10 side, a second covering portion 102 that covers the main body portion 2 on the second translucent substrate 11 side, and a first covering portion. It has an end surface covering portion 103 that connects the portion 101 and the second covering portion 102 and covers the end surface of the main body portion 2, and the first covering portion 101 and the second covering portion 102 are provided with openings 105a and 105b, respectively. there is

As shown in FIG. 2, the frame member 100 surrounds the terminal boxes 3a and 3b and also covers the sides of the main body 2. As shown in FIG.
The frame member 100 straddles the through holes 22a to 22f and the lid members 21a to 21f so that the first covering portion 101 does not separate the lid members 21a to 21f from the through holes 22a to 22f. In other words, the through holes 22a and 22b are hidden by the frame member 100 and are substantially invisible when viewed from the front.

Next, the configuration of the in-process solar battery panel 200, which is the raw material of the solar battery cell 30, will be described.

The in-process solar battery panel 200 is a solar battery panel that is a raw material for manufacturing the solar battery cell 30 , and is a work-in-process product of the solar battery cell 30 .
As shown in FIG. 16(a), the in-process solar cell panel 200 has busbar electrode portions 201a and 201b, first finger electrode portions 202a, and second collector electrodes 204a on one main surface (surface) side. Finger electrode portions 203a to 203c are provided, and a panel information display portion 205 is further provided.

On the other hand, as shown in FIG. 16(b), the in-process solar cell panel 200 has busbar electrode portions 201c and 201d, first finger electrode portions 202b, and a second collector electrode 204b on the other main surface (rear surface) side. It has second finger electrode portions 203d to 203f.
In the in-process solar cell panel 200, a wiring member (not shown) is connected to each of the busbar electrode portions 201a, 201b and the busbar electrode portions 201c, 201d, and is connected to the external load 150 via the wiring member. Electricity can be generated when light such as light is received.

The busbar electrode portion 201a is a portion that becomes the busbar electrode portion 50 after cutting, and the busbar electrode portion 201d is a portion that becomes the busbar electrode portion .

The first finger electrode portion 202a is a portion that becomes the first finger electrode portions 51a to 51e after cutting, and the first finger electrode portion 202b is a portion that becomes the first finger electrode portions 71a to 71e.

The first finger electrode portion 202a is provided with a position information display portion 207 corresponding to the position information display portion 58 after cutting.
The second finger electrode portions 203a to 203c are portions that will become the second finger electrode portions 52a to 52c after cutting, and the second finger electrode portions 203d to 203f will become the second finger electrode portions 72a to 72c after cutting. It is a part that becomes.

The panel information display section 205 directly or indirectly displays the management information of the in-process solar battery panel 200 . The panel information display section 205 of the present embodiment is a two-dimensional code, which can be read by an external terminal to display the information of the in-process solar cell panel 200 on the external device.

Next, a management system 300 that manages the solar cell modules 1 will be described.

As shown in FIG. 17, the management system 300 includes a control device 301 and a reading device 302 (reading means) connected wirelessly or by wire.
In the management system 300 of this embodiment, a control device 301 and a reading device 302 can communicate with each other via a network 303 such as the Internet or an intranet.

The control device 301 includes an identification unit 310 (identification means), a collation unit 311, a storage unit 312, and an input/output unit 313, and when receiving information on the photovoltaic cell 30 from the reading device 302, The collating unit 311 collates the information of the photovoltaic cells 30 in each row stored in the storage unit 312 with the received information, and the identifying unit 310 can identify the photovoltaic cells 30 in each row.

The reading device 302 includes a reading unit 305 and an input/output unit 306. By reading the information display units 88a and 88b provided on the interconnector 31b with the reading unit 305, each column connected by the interconnector 31a is read. of the solar cells 30 can be transmitted to the control device 301 .

Next, a method for manufacturing the solar cell module 1 will be described.

First, an in-process solar cell forming step is performed to form in-process solar cell panels 200 capable of photoelectric conversion by connecting to an external load 150 . Manufacture of the in-process solar cell panel 200 formed in the in-process solar cell forming process is substantially the same as that of the conventional solar cell panel, and is publicly known. Therefore, this process will be briefly described.

A semiconductor layer is formed on both sides of a semiconductor substrate using a CVD apparatus or the like to form a photoelectric conversion section 41 , and base electrode layers 45 and 65 are formed on both sides of the photoelectric conversion section 41 using a CVD apparatus or the like. Collecting electrodes 204a and 204b are then formed on the underlying electrode layers 45 and 65 by screen printing or the like to form the solar cell panel 200 in progress.

At this time, a panel information display portion 205 and a position information display portion 207 are formed on the front side.
In addition, the control device 301 of the management system 300 associates the position information display unit 207 of each solar cell 30 with the division position of the in-process solar battery panel 200 and stores it in the storage unit 312. The division positions of the solar battery cells 30 and the in-process solar battery panels 200 can be collated.

Subsequently, a solar cell string process for forming the solar cell string 12 is performed.
Specifically, as indicated by a two-dot chain line in FIG. 16, the in-process solar battery panel 200 is cut so that the longitudinal intermediate portions of the first finger electrode portions 202a and 202b are divided, and the plurality of solar battery cells 30 are divided. Then, the solar cells 30 are formed (cell dividing step, solar cell forming step).
Specifically, the inner portion of the busbar electrode portion 201b and the outer portion of the busbar electrode portion 201a are divided into equal intervals in the horizontal direction X so that the position information display portion 207 of the in-process solar cell panel 200 is included in the vertical direction Y. are divided respectively.
The division method is not particularly limited.
In the present embodiment, the substrate is divided by so-called folding, and a laser is irradiated from the second electrode layer 42 side to make a cut to the semiconductor substrate of the photoelectric conversion section 41, and the semiconductor substrate is bent along the cut to divide. .

The insulating protective material 33 having fluidity is applied to the ends of the split solar cells 30 in the longitudinal direction, and as shown in FIG. , 57b are buried with the insulating protective material 33 (coating step).

Then, one end side of the interconnectors 31a and 31b is connected to the busbar electrode portion 50 of one solar cell 30 via the conductive adhesive 32 (wiring connection step), and the busbar electrode portion of another solar cell 30 is connected. The other ends of the interconnectors 31a and 31b are connected to 70 (second wiring connection step).
The wiring connection process may be performed simultaneously with the second wiring connection process, or may be performed before the second wiring connection process.

A coloring material having fluidity is applied to the portion between one solar cell 30 and another solar cell 30 of the straight interconnector 31a, and the color is closer to the color of the solar cell 30 than the color of the straight interconnector 31a. is formed (coloring step).
At this time, the coloring material is applied to the exposed portions of the straight interconnectors 31a, further applied from above the straight interconnectors 31a to above the photovoltaic cells 30, and cured.

In a separate step, information display portions 88a and 88b are formed on the connector portions 85 and 86 of the folded interconnector 31b as shown in FIG. 12(b). Then, the positional information display section 58 of each solar battery cell 30 is checked for the division position in the in-process solar battery panel 200, and the information display sections 88a and 88b and the position of each solar battery cell 30 and the division in the in-process solar battery panel 200 are compared. The position is tied (information display portion formation step).

Lead wires 14 and 15 are connected to each solar cell string 12 to electrically connect each solar cell string 12 to terminal boxes 3a and 3b. , 16b.

Next, a method for repairing the solar cell module 1 of the first embodiment will be described. In the following description, it is assumed that the power generation side solar cell string 37a has become abnormal due to a failure or the like.

First, as shown in FIG. 18, the branch wiring portion 91b connected to the failed power generation side solar cell string 37a is cut off.
Specifically, as shown in FIG. 19A, the lid member 21b overlapping the branch wiring portion 91b is removed, and as shown in FIG. and cut off in the through hole 22b.

Subsequently, as shown in FIG. 19C, the lid member 21b is attached again to the through hole 22b to close the through hole 22b. That is, the lid member 21b is put on so as to cover the cut portion of the branch wiring portion 91b.

In a separate process, as shown in FIG. 20(a), the lid member 21a overlapping the branch wiring portion 91a connected to the spare solar cell string 38 is removed, and as shown in FIGS. 20(b) and 20(c), A connection lid member 110 is attached to the through hole 22a to close the through hole 22a.
At this time, a conductive foil 111 (connecting member) is provided on the portion of the connection lid member 110 on the solar cell 30 side, and the conductive foil 111 connects the disconnection portion 92 of the branch wiring portion 91a. That is, as shown in FIG. 18B, the conductive foil 111 of the connection cover member 110 electrically connects the portion of the branch wiring portion 91a on the side of the solar cell 30 and the portion of the main wiring portion 90 side.
The conductive foil 111 of the connection lid member 110 is not particularly limited as long as it has conductivity. For the conductive foil 111, for example, metal such as gold, silver, copper, platinum, palladium, or metal alloy can be used.

According to the solar cell module 1 of the first embodiment, each power generation side solar cell string 37a is electrically opened to the external load 150 outside the sealing members 16a and 16b as shown in FIG. A spare solar cell string 38 can be electrically connected to an external load 150 . Therefore, even if one power generating side solar cell string 37a does not generate power due to failure or the like, the power generating side solar cell string 37a is electrically disconnected from the external load 150 as shown in FIG. By connecting the solar cell string 38 to the external load 150, power can be generated with the power generation capacity as designed.

According to the solar cell module 1 of the first embodiment, the branch wiring portions 91b to 91f of the power generation side solar cell strings 37a to 37e are exposed from the openings of the power generation side through holes 22b to 22f. , there is a disconnection portion 92 in a part of the branch wiring portion 91a, and the disconnection portion 92 is exposed from the opening of the spare side through hole 22a. Therefore, by cutting a part of one branch wiring portion 91b and electrically connecting the disconnected portion 92 of the branch wiring portion 91a, the solar cell string 12 used for power generation can be easily removed from the power generation side solar cell string 37a. It can be changed to a spare solar cell string 38 .

According to the solar cell module 1 of the first embodiment, the solar cells are arranged such that the projecting portions 56a, 56b, 57a, and 57b forming the end portions of the end electrode portions 54 and 55 of the first finger electrode portions 51a to 51e are buried. Since the insulation protection material 33 is formed on the end surface of the cell 30, the projecting portions 56a, 56b, 57a, and 57b forming the end portions of the terminal electrode portions 54 and 55 of the first finger electrode portions 51a to 51e are connected to the interconnector 31a. , 31b can be prevented.

According to the solar cell module 1 of the first embodiment, part of the interconnector 31a is covered with the colored layer 34 closer to the color of the solar cell 30 than the interconnector 31a. The battery cells 30 can be brought closer, and the color of the interconnector 31a is less conspicuous.

According to the solar cell module 1 of the first embodiment, the colored layer 34 is provided over the interconnector 31 a and the solar cell 30 . It also functions as a material, making it difficult for the interconnector 31 a to peel off from the solar battery cell 30 .

According to the solar cell module 1 of the first embodiment, even when a problem such as an initial failure occurs in a specific solar cell 30b, the information associated with the solar cell information is displayed on the information display portions 88a and 88b. Since the information is displayed, it is possible to identify the relationship between the specific solar battery cell 30b in which the problem has occurred and the in-process solar battery panel 200. FIG. Therefore, it is easy to give feedback such as identification of the cause of the problem.

According to the solar cell module 1 of the first embodiment, the information display portions 88a and 88b are visible from the outside in the thickness direction with respect to the solar cell 30 through the first translucent substrate 10 and the sealing material 16a. is. Therefore, it is easy to confirm the positions of the information display portions 88a and 88b, and the information display portions 88a and 88b can be read by the reading portion 305 from the outside of the first translucent substrate 10. FIG.

According to the solar cell module 1 of the first embodiment, in addition to the information display portions 88a and 88b, each solar cell 30 is provided with the position information display portion 58 for displaying the position information of the in-process solar cell panel 200 before division. Therefore, even after the interconnectors 31a and 31b are removed from the photovoltaic cell 30, the positional information of the photovoltaic cell 30 can be specified.

According to the solar cell module 1 of the first embodiment, since the position information display portion 58 is formed at a position separated from the linear interconnector 31a, even when the linear interconnector 31a is connected, the position information display portion 58 can be visually recognized, and the position information in the in-process solar battery panel 200 before the division of the solar battery cells 30 can be specified.

According to the repaired solar cell module 1 repaired by the repair method of the first embodiment, the solar cell module looks substantially the same as before the repair.

According to the management system 300 of the first embodiment, the reading unit 305 reads the related information from the information display units 88a and 88b of the solar cell module 1 to the solar cell information, and the specifying unit 310 reads the solar cell information from the related information. can be specified, a large number of solar cell modules 1 can be collectively managed at the time of manufacture. In addition, even if a specific solar cell 30b has a problem such as an initial failure, the relationship between the specific solar cell 30b and the in-process solar cell panel 200 can be identified. Therefore, it is easy to give feedback such as identification of the cause of the problem.

Next, a solar cell module 400 according to a second embodiment of the invention will be described. In addition, the same code|symbol is attached|subjected about the structure similar to the solar cell module 1 of 1st Embodiment, and description is abbreviate|omitted.

In the solar cell module 400 of the second embodiment, the extraction wiring 414 is provided over the inside and outside of the main body 402, and part of the wiring is arranged inside the terminal box 403a.
As shown in FIG. 21, the solar cell module 400 includes a main body 402 and terminal boxes 403a and 3b. are connected to each other.
The main body part 402 includes, as main constituent members, a first translucent substrate 410 (first base material), a second translucent substrate 11, a plurality of solar cell strings 12, and extraction wirings 414a to 414f and 15. , and sealing materials 16a and 16b.
The first translucent substrate 410 is similar to the first translucent substrate 10, and as shown in FIG. 22, the through holes 22a to 22f are not provided and the cover members 21a to 21f are not provided.
The lead wires 414a to 414f are, as shown in FIG. extends to the outside of the

As shown in FIG. 22, the terminal box 403a includes a connection circuit 421 in a box portion 420 for connecting the extraction wirings 414a to 414f of the main body portion 402 and the cable member 6a.
The box portion 420 is composed of a housing portion 425 having an opening 422 and a lid portion 426 closing the opening 422 .
The connection circuit 421 includes a main wiring portion 430 and branch wiring portions 431a to 431f branching from the end portion of the main wiring portion 430 toward the extraction wirings 414a to 414f.
A switch section 432 is provided in the branch wiring section 431a connected to the extraction wiring 414a connected to the spare solar cell string 38 .
The switch portion 432 can electrically connect and disconnect the main wiring portion 430 side of the branch wiring portion 431a and the spare solar cell string 38 side.
The switch part 432 is turned off in a normal state, and electrically opens the main wiring part 430 side and the spare solar cell string 38 side of the branch wiring part 431a.

Next, a method for repairing the solar cell module 400 of the second embodiment will be described. It should be noted that, in the following description, as in the first embodiment, it is assumed that the power generation side solar cell string 37a has become abnormal due to a failure or the like.

First, as shown in FIG. 24, the branch wiring portion 431b connected to the extraction wirings 414a to 414f connected to the failed power generation side solar cell string 37a is cut off.
Specifically, the lid portion 426 of the terminal box 403a is removed, and the branch wiring portion 431b is cut with a jig in a state where the branch wiring portion 431b is exposed from the opening 422 to be disconnected.

Also, the switch portion 432 of the branch wiring portion 431a connected to the spare solar cell string 38 is turned on to electrically connect the main wiring portion 430 side and the spare solar cell string 38 side of the branch wiring portion 431a.

According to the solar cell module 400 of the second embodiment, even if one power generation side solar cell string 37a does not generate power due to a failure or the like, the backup solar cell strings 38 other than the failed power generation side solar cell string 37a can be externally installed. By connecting to the load 150, power can be generated with the power generation capacity as designed.
In addition, according to the solar cell module 400 of the second embodiment, the wirings 414a to 414f can be connected outside the main body 402, so that the layout of the connection between the wirings 414a to 414f can be easily changed. Yes, and the output can be adjusted by the number of solar cell strings 12 to be connected.

According to the repaired solar cell module 400 repaired by the repair method of the second embodiment, the solar cell module looks the same as before the repair.

In the above-described first embodiment, when repairing, a part of the extraction wiring 14 connected to the solar cell string 12 in which the abnormality has occurred is cut off, and the solar cell string 12 in which the abnormality has occurred is removed from the other solar cell string 12 . Although electrically separated, the present invention is not limited to this. The interconnectors 31a and 31b forming the solar cell string 12 in which an abnormality has occurred may be disconnected to electrically disconnect the solar cell string 12 in which an abnormality has occurred from the other solar cell strings 12 .

Although the solar cells 30 are arranged in the vertical direction Y in the above-described embodiment, the present invention is not limited to this. The solar cells 30 may be arranged in the horizontal direction X or may be arranged in an oblique direction.

In the above-described first embodiment, the disconnection portion 92 is provided in the extraction wiring 14 connected to the positive electrode side end portion 35 of the spare solar cell string 38, but the present invention is not limited to this. A disconnection portion 92 may be provided in the extraction wiring 15 connected to the negative electrode end portion 36 of the spare solar cell string 38 . Similarly, in the second embodiment, the connection circuit 421 is provided inside the terminal box 403a, but the present invention is not limited to this. A connection circuit 421 may be provided in the terminal box 3b.

In the above-described embodiment, the solar cell 30 has a vertically long rectangular shape, but the present invention is not limited to this, and the shape of the solar cell 30 is not particularly limited.
The solar cell 30 may have a substantially square shape, or a polygonal shape such as a triangle, a quadrangle, a pentagon, or a hexagon, as in the conventional case. Also, it may be circular or elliptical.

In the embodiment described above, the conductive adhesive 32 is adhered only to the busbar electrode portions 50 and 70, but the present invention is not limited to this. The conductive adhesive 32 may be provided over the first finger electrode portions 51 and 71 and the underlying electrode layers 45 and 65 from the busbar electrode portions 50 and 70 toward the outer end portions.

In the above-described embodiment, the connecting lid member 110 electrically connects the disconnection portion 92 with the conductive foil 111, but the present invention is not limited to this, and the disconnection portion 92 is electrically connected. There is no particular limitation on the shape of the connecting member. The connecting member may be plate-like or linear.

As long as the above-described embodiments are within the technical scope of the present invention, each component can be freely replaced or added between the embodiments.

1,400 solar cell module 10,410 first translucent substrate (first base material)
11 Second translucent substrate (second base material)
12 solar cell string (series connection group)
14 first extraction wiring 15 second extraction wiring 16a, 16b sealing material 20 substrate main body 21a to 21f cover member 22a through hole (preliminary side through hole)
22b to 22f through holes (power generation side through holes)
30, 30a to 30f Solar cell 31a Straight interconnector (conductor)
31b folded interconnector (conductor)
37a to 37e power generation side solar cell string 38 spare solar cell string 50 busbar electrode portion 51a to 51e first finger electrode portion 52a to 52e second finger electrode portion 70 busbar electrode portion 71a to 71e first finger electrode portion 72a to 72e second second Finger electrode portions 91a, 91f Branch wiring portion 92 Disconnection portion (disconnection portion)
96a to 96f Branch wiring portion 110 Connection lid member 111 Conductive foil (connection member)
150 External loads 414a to 414f Extraction wiring 421 Connection circuits 431a to 431f Branch wiring section 432 Switch section

Claims (4)

a first substrate and a second substrate, a plurality of solar cell strings arranged between the first substrate and the second substrate, and the first substrate and the second substrate; A solar cell module sealed with a sealing material between
The plurality of solar cell strings include a power generating side solar cell string electrically connected in parallel to an external load and a spare solar cell string electrically disconnected from the external load,
outside the encapsulant and inside the first base material and the second base material in the thickness direction, one power generation side solar cell string is electrically open to the external load; A solar cell module, wherein a spare solar cell string is electrically connectable to the external load. The solar cell string includes a series connection group in which a plurality of solar cells are electrically connected in series via conductors, and an extraction wiring for extracting electricity from the series connection group,
The first base material or the second base material has a power generation side through hole and a spare side through hole penetrating in the thickness direction,
In the power generation side solar cell string, the extraction wiring and/or the conductor are exposed from the opening of the power generation side through hole,
2. The solar according to claim 1, wherein said spare solar cell string has a part of said extraction wiring broken, said extraction wiring exposed from an opening of said spare-side through-hole, and a broken part located in said exposed part. battery module. A repaired solar cell module obtained by repairing the solar cell module according to claim 2 in which an abnormality has occurred in one power generating side solar cell string,
the extraction wiring or the conductor of the one power-generating-side solar cell string is disconnected within the power-generating-side through hole,
A repaired solar cell module, comprising: a connecting member that electrically connects a disconnected portion of the extraction wiring in the spare-side through hole and electrically connects the spare solar cell string to the external load. a first substrate and a second substrate, a plurality of solar cell strings arranged between the first substrate and the second substrate, and the first substrate and the second substrate; A method for repairing a solar cell module sealed with a sealing material between
The solar cell module includes a plurality of solar cell strings, each of which has a power generating side solar cell string electrically connected in parallel to an external load and a spare solar cell string electrically disconnected from the external load. a method of repairing the
When there is an abnormality in the one power generation side solar cell string, the one power generation side solar cell string is placed outside the encapsulant and inside the first base material and the second base material in the thickness direction. A method of repairing a solar cell module, comprising electrically disconnecting a battery string from the external load and electrically connecting the spare solar cell string to the external load.

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