JP2020155593A - Solar cell module, repaired solar cell module, and repairing method of the solar cell module - Google Patents

Abstract

To provide a solar cell module capable of repairing a normal power generation function even in the case of generating a solar cell string which is not generated doe to an initial failure, a repaired solar cell module, and a repairing method of the solar cell module.SOLUTION: In a solar cell module, a first base material and a second base material are provided, and a plurality of solar cell strings is distributed between the first base material and the second base material. A space between the first base material and the second base material is sealed with a sealing material. The plurality of solar cell strings includes: a power generation side solar cell string electrically connected in parallel to an external load; and a preparation solar cell string electrically open to the external load. In an external part of the sealing material, one power generation solar cell string is electrically opened to the external part load, and the preparation soler cell string is structured so as to be electrically connected to the external load.SELECTED DRAWING: Figure 18

Description

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

Conventionally, a see-through solar cell module capable of transmitting a part of sunlight in the thickness direction has been known, and since this see-through solar cell module can transmit light, it can be used as a translucent building material such as a window. It is used for various purposes (for example, Patent Document 1).
In a conventional see-through solar cell module, solar cells having a large light-receiving surface area are spread over the solar cells, and the space between adjacent solar cells is used for daylighting.

Japanese Unexamined Patent Publication No. 2001-339088

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

Therefore, the present inventor has prototyped a solar cell module using a solar cell having 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, and these solar cell cells are connected by an interconnector 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.
In the prototype solar cell module, small pieces of solar cells are lined up, so even if the power generation part becomes dark, the space between the daylighting parts is narrow, so the light wraps around from the daylighting part and the power generation part becomes less noticeable than before. It was.

However, a new problem has arisen in the prototype solar cell module.
That is, when the solar cells are subdivided, the width of the solar cells becomes narrower and the number of solar cells increases. Therefore, rarely due to external factors such as initial failure and impact, from the time of installation of the solar cell module. In some cases, solar cells that did not generate electricity were generated. When a solar cell that does not generate power is generated, there is a problem that the solar cell string to which the solar cell that does not generate power belongs cannot generate power, and the power generation efficiency as designed cannot be obtained.

Therefore, the present invention relates to a solar cell module capable of ensuring a normal power generation function even when a solar cell string that does not generate power occurs due to an initial failure or the like, a repaired solar cell module that has been repaired, and a method for repairing the solar cell module. The purpose is to provide.

A solar cell string using a subdivided solar cell is extremely low in cost as compared with a conventional solar cell string. Therefore, increasing the number of one solar cell string does not result in a large cost increase.
Therefore, the present inventor can implement a spare solar cell string to replace the solar cell string with a spare solar cell string even when a solar cell string that does not generate power is generated due to an initial failure or the like. 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 above considerations is a plurality of solar cell strings between the first base material, the second base material, and the first base material and the second base material. Is arranged, and the space between the first base material and the second base material is sealed with a sealing material, and 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 and a spare solar cell string electrically opened to the external load, and one power generation side solar cell string is connected to the outside of the sealing material. It is a solar cell module that is electrically open to an external load and can electrically connect the spare solar cell string to the external load.

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

In a preferred aspect, the solar cell string has a series connection group in which one or more solar cell cells are electrically connected in series via a conductor, and a take-out 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 take-out wiring and / or the conductor. The spare solar cell string is exposed from the opening of the power generation side through hole, a part of the take-out wiring is broken, the take-out wiring is exposed from the opening of the spare side through hole, and the broken portion is exposed. Is preferably located.

A preferred aspect is that the solar cell string has a series connection group in which one or more solar cells are electrically connected in series and a take-out wiring for extracting electricity from the series connection group. One end of the take-out wiring is exposed from the sealing material, and the connection circuit electrically connects the take-out wirings of the power generation side solar cell string outside the sealing material, and the spare The solar cell string is electrically open to the power generation side solar cell string.

One aspect of the present invention is a repaired solar cell module in which the above-mentioned solar cell module in which an abnormality has occurred in one power generation side solar cell string is repaired, and the take-out wiring of the one power generation side solar cell string or the said The conductor is disconnected in the power generation side through hole, electrically connects the disconnected portion of the take-out wiring in the spare side through hole, and electrically connects the spare solar cell string to the external load. A repaired solar cell module with a connecting member to connect to.

One aspect of the present invention is a repaired solar cell module in which the above-mentioned solar cell module in which an abnormality has occurred in one power generation side solar cell string is repaired, and the connection circuit is partially disconnected and described above. The power generation side solar cell string is electrically opened to another 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 is that a plurality of solar cell strings are arranged between the first base material, the second base material, the first base material, and the second base material, and the first base material and the first base material. This is a method for repairing a solar cell module in which the space between the second base material and the solar cell module is sealed with a sealing material, and the plurality of solar cell strings are electrically connected in parallel to an external load. A method of repairing a solar cell module having a side solar cell string and a spare solar cell string that is electrically open to the external load, and when there is an abnormality in one power generation side solar cell string, the above-mentioned A solar cell module in which the one power generation side solar cell string is electrically opened to the external load and the spare solar cell string is electrically connected to the external load outside the sealing material. It is a repair 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 that of the solar cell module in the normal state can be exhibited.

One aspect of the present invention is that a plurality of solar cell strings are arranged between the first base material, the second base material, the first base material, and the second base material, and the first base material and the first base material. The solar cell module is sealed with a sealing material between the second base material, and each solar cell string is a series connection group in which one or more solar cells are electrically connected in series. It has take-out wires that take out electricity from the series connection group, and each take-out wire has one end exposed from the encapsulant and can be connected to each other directly or via another member outside the encapsulant. It is a solar cell module.

According to this aspect, even if one solar cell string does not generate power due to a failure or the like, by connecting a solar cell string other than the failed solar cell string to an external load, it is possible to generate power with the power generation capacity as designed. ..
According to this aspect, since each take-out wiring can be connected outside the encapsulant, it is easy to change the layout of the connection between the take-out wires, and the output can be adjusted by the number of solar cell strings to be connected. is there.

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

It is a perspective view which shows typically the installation state of the solar cell module of 1st Embodiment of this invention. It is a partially cutaway perspective view around the solar cell module of FIG. It is an exploded perspective view of the solar cell module of FIG. It is a top view of the solar cell module of FIG. 1, and the first translucent substrate is omitted. It is an electric circuit diagram of the solar cell module of FIG. It is explanatory drawing of the solar cell module of FIG. 1, (a) is the sectional view of the spare solar cell string, and (b) is the sectional view of the solar cell string on the power generation side. It is a perspective view of the solar cell of FIG. It is a perspective view which saw the solar cell of FIG. 7 from the direction different from FIG. It is explanatory drawing of the solar cell of FIG. 7, (a) is a plan view, and (b) is a bottom view. 9 is an explanatory view of the solar cell of FIG. 9, FIG. 9A is a sectional view taken along the line AA of FIG. 9B, and FIG. 9B is a sectional view taken along the line BB of FIG. 9B. It is an exploded perspective view of the main part of the solar cell module of FIG. 4A and 4B are explanatory views of the interconnector, FIG. 4A is a perspective view of a straight interconnector, and FIG. 4B is a perspective view of a folded interconnector. It is a perspective view around the linear interconnector of the solar cell module of FIG. It is a perspective view around the folded interconnector of the solar cell module of FIG. It is a perspective view around the take-out wiring of the solar cell module of FIG. It is explanatory drawing of the work-in-process solar cell panel which is a raw material of the solar cell of FIG. 7, (a) is the plan view of the work-in-process solar cell panel, (b) is the bottom view of the work-in-process solar cell panel. The cut part is indicated by a chain double-dashed line. It is a block diagram of the management system of 1st Embodiment of this invention. It is explanatory drawing of the repair process of the solar cell module of FIG. 1, (a) is the electric circuit diagram of the solar cell module before repair, and (b) is the electric circuit diagram of the solar cell module after repair. It is explanatory drawing of the repair process of the solar cell module of FIG. 1, (a) is the perspective view which shows the state which the lid part to cut is removed, (b) is the perspective view which shows the state which the interconnector is cut. It is a figure, (c) is the perspective view which shows the state after disconnection of an interconnector. It is explanatory drawing of the repair process of the solar cell module of FIG. 1, (a) is the perspective view which shows the state which removed the lid part to connect, (b) is the perspective view which shows the state at the time of attaching a lid part. (C) is a perspective view showing a state in which the lid portion is attached. It is a top view of the solar cell module of the 2nd Embodiment of this invention, and the frame member and the 1st translucent substrate are omitted. It is an exploded perspective view of the terminal box of the solar cell module of FIG. It is an exploded perspective view of the main part of the solar cell module of FIG. It is explanatory drawing of the repair process of the solar cell module of FIG. 21, (a) is the electric circuit diagram of the solar cell module before repair, and (b) is the electric circuit diagram of the solar cell module after repair.

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, and is mainly attached to a frame member 100 fixed to a wall and vertically. It is used in a posture.
The solar cell module 1 is a double-sided light receiving type see-through solar cell module, has a daylighting function, and is capable of transmitting a part of light in the thickness direction. Further, the solar cell module 1 is a double-sided light receiving type solar cell module capable of receiving light on both the front and back sides to generate electricity.
The solar cell module 1 is managed by the 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, via cable members 6a and 6b provided on the terminal boxes 3a and 3b. , Is connected to the external load 150 shown in FIG.

As shown in FIGS. 4 and 6, the main body 2 includes a first translucent substrate 10 (first base material) and a second translucent substrate 11 (second base material) as main constituent members. The solar cell string 12 (series connection group), the first take-out wiring 14, the second take-out wiring 15, and the sealing materials 16a and 16b are provided. Then, in the main body 2, a plurality of solar cell strings 12 and take-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 the materials 16a and 16b.

Since the solar cell module 1 of the present embodiment is a double-sided light receiving type solar cell module, it has no front and back sides. However, in the following description, unless otherwise specified, the first translucent substrate 10 side is the front side. , The second translucent substrate 11 side will be described as the back side.

As shown in FIG. 3, the translucent substrates 10 and 11 are both plate-shaped members having a planar spread, and in the present embodiment, they have a quadrangular shape. The translucent substrates 10 and 11 are members having translucency and insulation, and for example, a translucent insulating substrate such as a glass substrate can be used.

As shown in FIG. 3, the first translucent substrate 10 is composed of a substrate main body 20 and lid members 21a to 21f.
The substrate main body 20 has a plurality of through holes 22a to 22f penetrating in the thickness direction.
The through holes 22a to 22f are work holes for cutting or connecting the take-out wiring 14 from the outside.
The lid members 21a to 21f are members that close 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 through holes 22a to 22f.

The solar cell string 12 is composed of a plurality of solar cell cells 30, interconnectors 31a and 31b (conductors), a conductive adhesive material 32, an insulating protective material 33, and a colored layer 34 as main constituent members. , Each solar cell 30 is 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 meanders between the translucent substrates 10 and 11 when the first translucent substrate 10 is viewed in a plan view, and extends in one of the extending directions. Is the positive electrode side end 35, and the other end is the negative electrode side end 36.

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

The solar cell 30 is a piece of a solar cell obtained by cutting a work-in-progress solar cell panel 200 capable of generating electricity by connecting to an external load 150 into a strip shape, and is a vertically long rectangular piece. That is, as shown in FIG. 7, the solar cell 30 extends in the vertical direction Y with a width in the horizontal direction X.
As shown in FIG. 10, the solar cell 30 of the present embodiment includes a first electrode layer 40, a photoelectric conversion unit 41, and a second electrode layer 42.

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 collecting electrode 46, and is a conductive layer that extracts electricity from the photoelectric conversion unit 41. The base electrode layer 45 of the present embodiment is made of a transparent conductive oxide such as indium tin oxide (ITO).
The first collecting electrode 46 is a conductive layer partially laminated on the base electrode layer 45, and is composed of a bus bar electrode portion 50, first finger electrode portions 51a to 51e, and second finger electrode portions 52a to 52c. Has been done.
The first collecting electrode 46 is made of a material having a higher conductivity than the base electrode layer 45, and in the present embodiment, it is made of a metal such as gold, silver, aluminum, copper, palladium, or a metal alloy thereof. ..

As shown in FIG. 7, the bus bar electrode portion 50 is an electrode portion that is provided unevenly distributed from one end portion of the center in the longitudinal direction (longitudinal direction Y) and extends in the width direction (horizontal direction X).
As can be read from FIGS. 13, 14, and 15, the bus bar electrode portion 50 is a portion that functions as a land to which the interconnectors 31a and 31b or the take-out wirings 14 and 15 are connected via the conductive adhesive material 32.
The width of the bus bar electrode portion 50 is preferably 1 mm or more and 8 mm or less.

As shown in FIG. 7, the first finger electrode portions 51a to 51e are linear portions extending in the longitudinal direction (longitudinal direction Y) from the intermediate portion of the bus bar electrode portion 50 in the lateral direction X.
The first finger electrode portions 51a to 51e are arranged in parallel at intervals in the horizontal direction X, and all reach the vicinity of the end portion in the vertical direction Y.
The width of the first finger electrode portions 51a to 51e is narrower than the width of the bus bar electrode portion 50, and is 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 terminal electrode portion 54 is a portion extending from the bus bar electrode portion 50 to one end portion in the longitudinal direction, and the other terminal electrode portion 55 is the second finger electrode portion farthest from the bus bar electrode portion 50 in the longitudinal direction. It is a portion extending from 52c to the other end in the longitudinal direction.
The terminal electrode portion 54 has overhanging portions 56a and 56b protruding outward from the end portion of the base electrode layer 45, and the terminal electrode portion 55 has an overhanging portion 56a from the end portion of the base electrode layer 45. , 56b has overhanging portions 57a and 57b overhanging toward the opposite side.
In reality, overhanging portions 56a, 56b, 57a, 57b are rarely generated, and even if they occur, they hardly overhang. In the present embodiment, for convenience of explanation, it is assumed that there are overhanging portions 56a, 56b, 57a, 57b, and the expression is exaggerated.

As shown in FIG. 7, the terminal electrode portion 55 is provided with a position information display portion 58.
The position information display unit 58 is a portion that displays information on each solar cell 30 and / or related information associated with the information on each solar cell 30, and is a work-in-progress solar panel as a division source shown in FIG. It is possible to directly or indirectly display the information of the 200 and the position information of the in-process solar cell panel 200 before the division.
As shown in FIG. 9, the position information display unit 58 of the present embodiment is composed of a part of the terminal electrode portions 55 of the plurality of first finger electrode portions 51a, 51b, 51d.
Specifically, the terminal electrode portions 55 of the predetermined first finger electrode portions 51a, 51b, 51d are provided with an overhanging portion in the lateral direction X, and the cutting position in the in-process solar cell panel 200 is determined by the overhanging position of the overhanging portion. Information is displayed. That is, the position of the position information display unit 58 is different in each solar cell 30, and the position information in the work-in-process solar 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 bus bar electrode portion 50 and extending orthogonally to the first finger electrode portions 51a to 51e.
The second finger electrode portions 52a to 52c are arranged in parallel at intervals in the vertical direction Y, and all reach the vicinity of the end portion in the horizontal direction X.
The width of the second finger electrode portions 52a to 52c is narrower than the width of the bus bar electrode portion 50, and is preferably 30 μm or more and 70 μm or less.

The photoelectric conversion unit 41 is a portion that converts light energy into electrical energy.
The solar cell 30 of the present embodiment is a crystalline solar cell, in which the photoelectric conversion unit 41 has a semiconductor layer laminated on a semiconductor substrate, and has a PN junction between the semiconductor substrate and the semiconductor layer. ing.

The second electrode layer 42 is an electrode layer that is paired with the first electrode layer 40 and is provided on the back side (second translucent substrate 11 side), and as shown in FIG. 10, the base electrode layer 65 and the second electrode layer 42 It is composed of a double electrode 66.

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

The second collecting electrode 66 is a conductive layer partially laminated on the base electrode layer 65, and as shown in FIG. 8, the bus bar electrode portion 70, the first finger electrode portions 71a to 71e, and the second finger electrode It is composed of parts 72a to 72c.
The second collecting electrode 66 is made of a material having a higher conductivity than that of the base electrode layer 65, and in the present embodiment, it is made of a metal such as gold, silver, aluminum, copper, palladium, or a metal alloy thereof. ..

The bus bar electrode portion 70 is an electrode portion that is unevenly distributed from one side end portion of the center in the longitudinal direction (longitudinal direction Y) and extends in the width direction (horizontal direction X), and is a bus bar electrode portion of the first collecting electrode 46. It is provided on the side opposite to the portion 50 and extends in the lateral direction X.
The bus bar electrode portion 70 is a portion that functions as a land to which the take-out wirings 14 and 15 or the interconnectors 31a and 31b are connected via the conductive adhesive material 32.
The width of the bus bar electrode portion 70 is preferably 1 mm or more and 8 mm or less.

As shown in FIG. 8, the first finger electrode portions 71a to 71e are linear portions extending in the longitudinal direction (longitudinal direction Y) from the intermediate portion of the bus bar electrode portion 70 in the lateral direction X.
The first finger electrode portions 71a to 71e are arranged side by side at intervals in the horizontal direction X (width direction), and all reach the vicinity of the end portion in the vertical direction Y.
The width of the first finger electrode portions 71a to 71e is narrower than the width of the bus bar 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 terminal electrode portion 74 is a portion extending from the bus bar electrode portion 70 to one end portion in the longitudinal direction, and the other terminal electrode portion 75 is the second finger electrode portion farthest from the bus bar electrode portion 70 in the longitudinal direction. It is a portion extending from 72c to the other end in the longitudinal direction.

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

The interconnectors 31a and 31b are connecting members that electrically and physically connect the solar cells 30 and 30 adjacent to each other in the horizontal direction X or the vertical direction Y.

As shown in FIGS. 12A and 13, the interconnector 31a is a linear interconnector that connects two adjacent solar cells 30 and 30 and linearly connects them in the vertical direction Y.
As shown in FIG. 12A, 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 can be read from FIGS. 12B and 14, the interconnector 31b constitutes a folded portion of the solar cell string 12 when the first translucent substrate 10 is viewed in a plan view, and is adjacent to the solar cell string 12 in the lateral direction 2 It is a folded interconnector that connects the two solar cells 30 and 30.
As shown in FIG. 12B, 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.

The interconnector 31b is provided with information display units 88a and 88b on the third connector portion 85 and the fourth connector portion 86, and directly or indirectly transmits information on the solar cells 30 in each row connected by the interconnector 31a. It is possible to display the image.
The information display units 88a and 88b are in-process solar cell panels that serve as a division source for each solar cell 30 in a row of solar cell 30 (hereinafter, also referred to as a solar cell row) connected in the vertical direction Y by an interconnector 31a. It is possible to directly or indirectly display the solar cell information composed of the information of 200 and the position information in the in-process solar cell panel 200 before the division of each solar cell 30 in the solar cell row.
The information display units 88a and 88b of the present embodiment are one-dimensional codes or two-dimensional codes that are related information associated with the solar cell information, and are read by the reading unit 305 of the reading device 302 described later in each row. It is possible to read the information of the solar cell 30.

The conductive adhesive material 32 is an adhesive material that electrically and physically connects the bus bar electrode portions 50 and 70 and the interconnectors 31a and 31b, or the bus bar electrode portions 50 and 70 and the take-out wiring 14 and 15, and is conductive and. It has adhesiveness.
In the present embodiment, the conductive adhesive material 32 is a conductive adhesive film in which conductive adhesive materials are provided on both sides of the conductive film.

The insulating protective material 33 has an insulating property, and is an insulating protective layer that covers and protects the end face of the solar cell 30 in the longitudinal direction as shown in FIG.
The insulating protective material 33a is capable of burying the overhanging portions 56a and 56b of the terminal electrode portion 54 to prevent contact between the overhanging portions 57a and 57b and the interconnector 31a, and the insulating protective material 33b is a terminal electrode. The overhanging portions 57a and 57b of the portion 55 are buried, and the contact between the overhanging portions 57a and 57b and the interconnector 31b can be prevented.

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

The take-out wirings 14 and 15 are wirings for taking out electricity from each solar cell string 12 to the outside of the main body 2.
The take-out wiring 14 is a positive electrode side wiring in which one end is connected to the positive electrode side end 35 of each solar cell string 12, and the other end is electrically connected to the cable member 6a in the terminal box 3a. It is the wiring to be done.
As shown in FIG. 5, the take-out wiring 14 is a branch wiring that branches from the main body wiring portion 90 connected to the terminal box 3a and the end portion of the main body wiring portion 90 toward the positive electrode side end portion 35 of each solar cell string 12. The parts 91a to 91f are provided.
Of the branch wiring portions 91a to 91f, the branch wiring portion 91a connected to the spare solar cell string 38 is partially cut off, forming a disconnection portion 92 (disconnection portion). That is, the branch wiring portion 91a is divided into a main body wiring portion 90 side and a spare solar cell string 38 side.

The take-out wiring 15 is a negative electrode side wiring in which one end is connected to the negative electrode side end 36 of each solar cell string 12, and the other end is electrically connected to the cable member 6b in the terminal box 3b. It is the wiring to be done.
The take-out wiring 15 includes a main body wiring portion 95 connected to the terminal box 3b, and branch wiring portions 96a to 96f that branch from the end portion of the main body 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 adhesive materials that adhere between the translucent substrates 10 and 11 as shown in FIG. 6, and fill the space between the translucent substrates 10 and 11. It is intended to be sealed.
The sealing materials 16a and 16b of the present embodiment are insulating resin sheets, and specifically, EVA (ethylene vinyl acetate copolymer resin) sheets.

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

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

As shown in FIG. 3, the translucent substrates 10 and 11 are arranged so as to face each other, and the sealing materials 16a and 16b are laminated on the two facing surfaces. Each solar cell string 12 is arranged between the translucent substrates 10 and 11 and is embedded in the sealing materials 16a and 16b.
As shown in FIG. 4, each solar cell string 12 extends in the vertical direction Y as a whole and is arranged in the horizontal direction X.

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

The openings of the through holes 22b to 22f (through holes on the power generation side) of the first translucent substrate 10 are branch wirings connected to the solar cell strings 37a to 37e on the power generation side when the first translucent substrate 10 is viewed in a plan view. It overlaps with the parts 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 lid members 21b to 21f are removed.

The bus bar electrode portions 50 and 70 extend in the width direction (horizontal direction X) of the interconnectors 31a and 31b.
In the linear interconnector 31a, as shown in FIG. 13, the first connector portion 80 is connected to the bus bar electrode portion 50 of the first collection electrode 46 of one solar cell 30a via a conductive adhesive material 32. The two connector portions 81 are connected to the bus bar electrode portion 70 of the second collection electrode 66 of the other solar cell 30b via the conductive adhesive material 32.
In the linear interconnector 31a, when viewed in a plan view, the first connector portion 80 overlaps with the terminal electrode portions 54 of the first finger electrode portions 51a to 51e of one solar cell 30a, and the second connector portion 81 is the other. It overlaps with the terminal 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 on the outer surface, and an exposed portion 84 exposed from the colored layer 34 is partially formed.
The exposed portion 84 of the linear interconnector 31a is connected to the bus bar electrode portions 50 and 70 via the conductive adhesive material 32.
The colored layer 34 is provided so as to straddle the solar cell 30 from the linear interconnector 31a.

As shown in FIG. 14, the folded interconnector 31b has a third connector portion 85 connected to the bus bar electrode portion 70 of the second collecting electrode 66 of one solar cell 30c via a conductive adhesive material 32. The 4 connector portion 86 is connected to the bus bar electrode portion 50 of the first collection electrode 46 of the other solar cell 30d via the conductive adhesive material 32.
In the folded interconnector 31b, when viewed in a plan view, the third connector portion 85 overlaps with the terminal electrode portions 74 of the first finger electrode portions 71a to 71e of one solar cell 30c, and the fourth connector portion 86 is the other. It overlaps with the terminal 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 take-out wiring 14 is connected to the bus bar electrode portion 50 of the first collection electrode 46 of the solar cell 30 via a conductive adhesive material 32. When viewed in a plan view, the take-out wiring 14 overlaps with the terminal electrode portions 54 of the first finger electrode portions 51a to 51e of the solar cell 30 in the vicinity of one end portion. Similarly, one end of the take-out wiring 15 is connected to the bus bar electrode portion 70 of the second collecting electrode 66 of the solar cell 30 via the conductive adhesive material 32. When viewed in a plan view, the take-out wiring 15 overlaps with 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 portion.

The insulating protective material 33 covers the end face of the solar cell 30 so that the overhanging 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 unit 58 of the solar cell 30 does not overlap with the interconnectors 31a and 31b, and is located at a position separated from the interconnectors 31a and 31b. That is, the position information display unit 58 is not hidden by the interconnectors 31a and 31b, but is exposed to the outside.
The color of the interconnector 31a is closer to the color of the solar cell 30 than the color of the interconnector 31a and 31b due to the coloring layer 34 in the portion between the solar cells 30 and 30 which are the connection targets and are adjacent to each other in the vertical direction Y. It is 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 holding member having a square ring shape when viewed from the front.
The frame member 100 includes a first covering portion 101 that covers the first translucent substrate 10 side of the main body portion 2, a second covering portion 102 that covers the second translucent substrate 11 side of the main body portion 2, and a first covering. It has an end face 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 further covers each side of the main body 2.
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 come off the lid members 21a to 21f from the through holes 22a to 22f. That is, the through holes 22a to 22b are hidden by the frame member 100 when viewed from the front and are substantially invisible.

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

The in-process solar cell panel 200 is a solar cell panel that is a raw material for manufacturing the solar cell 30, and is a work-in-process product of the solar cell 30.
As shown in FIG. 16A, the in-process solar cell panel 200 has bus bar electrode portions 201a and 201b, first finger electrode portions 202a, and second collecting electrodes 204a on one main surface (surface) side. The 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. 16B, the in-process solar cell panel 200 has the bus bar electrode portions 201c and 201d and the first finger electrode portion 202b as the second collecting electrode 204b on the other main surface (back surface) side. It has second finger electrode portions 203d to 203f.
Then, in the in-process solar cell panel 200, a wiring member (not shown) is connected to each of the bus bar electrode portions 201a and 201b and the bus bar electrode portions 201c and 201d, and the solar cell panel 200 is connected to the external load 150 via the wiring member. It is possible to generate electricity when it receives light such as light.

The bus bar electrode portion 201a is a portion that becomes the bus bar electrode portion 50 after the cutting process, and the bus bar electrode portion 201d is a portion that becomes the bus bar electrode portion 70.

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

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

The panel information display unit 205 directly or indirectly displays the management information of the in-process solar cell panel 200. The panel information display unit 205 of the present embodiment is a two-dimensional code, and can display the information of the in-process solar cell panel 200 on an external device by reading it with an external terminal.

Subsequently, the management system 300 that manages the solar cell module 1 will be described.

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

The control device 301 includes a specific unit 310 (specific means), a collation unit 311, a storage unit 312, and an input / output unit 313, and when the information of the solar cell 30 is received from the reading device 302, it is in advance. The collating unit 311 collates the information of the solar cell 30 in each row stored in the storage unit 312 with the received information, and the specifying unit 310 can identify the solar cell 30 in each row.

The reading device 302 includes a reading unit 305 and an input / output unit 306, and by reading the information display units 88a and 88b provided on the interconnector 31b by the reading unit 305, each row connected by the interconnector 31a. Information on the solar cell 30 of the above can be transmitted to the control device 301.

Subsequently, a method of manufacturing the solar cell module 1 will be described.

First, a work-in-process solar cell forming step of forming a work-in-process solar cell panel 200 capable of photoelectric conversion by connecting to an external load 150 is performed. The production of the in-process solar cell panel 200 formed in the in-process solar cell forming step is substantially the same as that of the conventional solar cell panel and is known, so this step will be briefly described.

A semiconductor layer is formed on both sides of the semiconductor substrate by using a CVD device or the like to form a photoelectric conversion unit 41, and base electrode layers 45 and 65 are formed on both sides of the photoelectric conversion unit 41 by using a CVD device or the like. Then, the collector electrodes 204a and 204b are formed on the base electrode layers 45 and 65 by screen printing or the like to form the in-process solar cell panel 200.

At this time, the panel information display unit 205 and the position information display unit 207 are formed on the front side.
Further, the control device 301 of the management system 300 associates the position information display unit 207 of each solar cell 30 with the divided position in the in-process solar cell panel 200 and stores them in the storage unit 312, and the position information display unit 207 self. The split positions of the solar cell 30 and the in-process solar panel 200 can be collated.

Subsequently, a solar cell string step of forming the solar cell string 12 is performed.
Specifically, as shown by the two-point chain line in FIG. 16, the in-process solar cell panel 200 is cut so that the intermediate portion in the longitudinal direction of the first finger electrode portions 202a and 202b is divided, and the plurality of solar cell cells 30 are formed. The solar cell 30 is formed (cell division step, solar cell formation step).
Specifically, it is divided at equal intervals in the horizontal direction X, and the inner portion of the bus bar electrode portion 201b and the outer portion of the bus bar electrode portion 201a so as to include the position information display portion 207 of the in-process solar cell panel 200 in the vertical direction Y. Is divided into each.
The division method is not particularly limited.
In the present embodiment, it is divided by so-called folding, and it is divided by irradiating a laser from the second electrode layer 42 side to make a cut to the semiconductor substrate of the photoelectric conversion unit 41 and bending along the cut. ..

A fluid insulating protective material 33 is applied to the longitudinal end of the divided solar cell 30, and as shown in FIG. 11, the overhanging portions 56a, 56b, 57a of the first finger electrode portions 51a to 51e are applied. , 57b is buried in the insulating protective material 33 (coating step).

Then, one end side of the interconnectors 31a and 31b is connected to the bus bar electrode portion 50 of one solar cell 30 via the conductive adhesive material 32 (wiring connection step), and the bus bar electrode portion of another solar cell 30 is further connected. The other ends of the interconnectors 31a and 31b are connected to 70 (second wiring connection step).
The wiring connection step may be performed at the same time as the second wiring connection step, or may be performed before the second wiring connection step.

A fluid coloring material is applied to the portion between one solar cell 30 and the other solar cell 30 of the linear interconnector 31a, and the color is closer to the color of the solar cell 30 than the color of the linear interconnector 31a. The colored layer 34 of the above is formed (coloring step).
At this time, the coloring material is applied to the exposed portion of the linear interconnector 31a, and further applied from the linear interconnector 31a to the solar cell 30 to be cured.

Further, in a separate step, the information display portions 88a and 88b are formed on the connector portions 85 and 86 of the folded interconnector 31b as shown in FIG. 12B. Then, the position information display unit 58 of each solar cell 30 collates the division position on the in-process solar cell panel 200, and the positions of the information display units 88a and 88b and each solar cell 30 and the division in the in-process solar cell panel 200 are collated. Link the positions (information display unit forming process).

The take-out wirings 14 and 15 are connected to the solar cell strings 12, and the solar cell strings 12 are electrically connected to the terminal boxes 3a and 3b. The sealing material 16a is sandwiched between the two translucent substrates 10 and 11. , 16b.

Subsequently, a repair method of 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 an abnormality 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.
Specifically, as shown in FIG. 19A, the lid member 21b overlapping the branch wiring portion 91b is removed, and as shown in FIG. 19B, a dedicated jig is inserted from the through hole 22b to cut the branch wiring portion 91b. Then, it is cut off in the through hole 22b.

Subsequently, as shown in FIG. 19C, the lid member 21b is reattached to the through hole 22b to close the through hole 22b. That is, the lid member 21b is covered 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 connecting lid member 110 is attached to the through hole 22a to close the through hole 22a.
At this time, the connecting lid member 110 is provided with a conductive foil 111 (connecting member) on the portion on the solar cell 30 side, and the conductive foil 111 connects the broken portion 92 of the branch wiring portion 91a. That is, as shown in FIG. 18B, the conductive foil 111 of the connecting lid member 110 electrically connects the portion of the branch wiring portion 91a on the solar cell 30 side and the portion on the main body wiring portion 90 side.
The conductive foil 111 of the connecting lid member 110 is not particularly limited as long as it has conductivity. As the conductive foil 111, for example, a metal such as gold, silver, copper, platinum, palladium, or a metal alloy can be used.

According to the solar cell module 1 of the first embodiment, as shown in FIG. 18A, each power generation side solar cell string 37a is electrically opened to the external load 150 outside the sealing materials 16a and 16b. The spare solar cell string 38 can be electrically connected to the external load 150. Therefore, even if one power generation side solar cell string 37a does not generate power due to a failure or the like, the power generation side solar cell string 37a is electrically opened to the external load 150 as shown in FIG. By connecting the solar cell string 38 to the external load 150, it is possible to generate power 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 solar cell strings 37a to 37e on the power generation side are exposed from the openings of the through holes 22b to 22f on the power generation side, and the spare solar cell strings 38 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 disconnection portion 92 of the branch wiring portion 91a, the solar cell string 12 used for power generation can be easily connected from the power generation side solar cell string 37a. It can be changed to the spare solar cell string 38.

According to the solar cell module 1 of the first embodiment, the solar cell is embedded so that the overhanging portions 56a, 56b, 57a, 57b forming the ends of the terminal electrode portions 54, 55 of the first finger electrode portions 51a to 51e are buried. Since the insulating protective material 33 is formed on the end surface of the cell 30, the overhanging portions 56a, 56b, 57a, 57b forming the ends of the terminal electrode portions 54, 55 of the first finger electrode portions 51a to 51e are interconnectors 31a. , 31b can be prevented from coming into direct contact with.

According to the solar cell module 1 of the first embodiment, since a part of the interconnector 31a is covered with the colored layer 34 which is closer to the color of the solar cell 30 than the interconnector 31a, the color of the interconnector 31a is changed to the sun. It can be brought close to the battery cell 30, and the color of the interconnector 31a is inconspicuous.

According to the solar cell module 1 of the first embodiment, since the colored layer 34 is provided so as to straddle the interconnector 31a and the solar cell 30, the colored layer 34 adheres the interconnector 31a and the solar cell 30. It also functions as a material, and the interconnector 31a does not easily come off from the solar cell 30.

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

According to the solar cell module 1 of the first embodiment, the information display units 88a and 88b can be visually recognized through the first translucent substrate 10 and the sealing material 16a from the outside in the thickness direction with reference to the solar cell 30. Is. Therefore, the positions of the information display units 88a and 88b can be easily confirmed, and the information display units 88a and 88b can be read by the reading unit 305 from the outside of the first translucent substrate 10.

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

According to the solar cell module 1 of the first embodiment, since the position information display unit 58 is formed at a position separated from the linear interconnector 31a, the position information display unit 58 is formed even when the linear interconnector 31a is connected. Is visible, and the position information on the in-process solar cell panel 200 before the division of the solar cell 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 specific unit 310 reads the related information from the related information. Can be specified, so that a large number of solar cell modules 1 can be collectively managed at the time of manufacturing. Further, even when a defect such as an initial defect occurs in the specific solar cell 30b, the relationship between the specific solar cell 30b and the in-process solar cell panel 200 can be specified. Therefore, it is easy to give feedback such as identifying the cause of the defect.

Subsequently, the solar cell module 400 of the second embodiment of the present invention will be described. The same components as those of the solar cell module 1 of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the solar cell module 400 of the second embodiment, the take-out wiring 414 is provided inside and outside the main body portion 402, and a part thereof is arranged in the terminal box 403a.
As shown in FIG. 21, the solar cell module 400 includes a main body portion 402 and terminal boxes 403a and 3b, and with respect to an external load 150 via cable members 6a and 6b provided on the terminal boxes 403a and 3b. Is connected.
The main body portion 402 includes a first translucent substrate 410 (first substrate), a second translucent substrate 11, a plurality of solar cell strings 12, and take-out wirings 414a to 414f, 15 as main constituent members. , The sealing materials 16a and 16b are provided.
The first translucent substrate 410 is the same as the first translucent substrate 10, and as shown in FIG. 22, the through holes 22a to 22f are not provided, and the lid members 21a to 21f are not provided.
As shown in FIG. 23, the take-out wirings 414a to 414f are wirings for connecting the solar cell strings 12 to the external terminal box 403a of the main body 402, and the positive electrode side ends 35 to the main body 402 of each solar cell string 12. It extends toward the outside of the.

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

Subsequently, a method of repairing the solar cell module 400 of the second embodiment will be described. In the following description, as in the first embodiment, it is assumed that the power generation side solar cell string 37a has an abnormality due to a failure or the like.

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

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

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 spare solar cell string 38 other than the failed power generation side solar cell string 37a is externally attached. By connecting to the load 150, it is possible to generate power with the power generation capacity as designed.
Further, according to the solar cell module 400 of the second embodiment, since each take-out wiring 414a to 414f can be connected outside the main body portion 402, it is easy to change the layout of the connection between the take-out wirings 414a to 414f. Yes, 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 has the same appearance as before the repair.

In the first embodiment described above, the solar cell string 12 in which the abnormality has occurred is removed from the other solar cell string 12 by cutting a part of the take-out wiring 14 connected to the solar cell string 12 in which the abnormality has occurred during repair. Although electrically separated, the present invention is not limited to this. The interconnectors 31a and 31b constituting the abnormal solar cell string 12 may be disconnected to electrically disconnect the abnormal solar cell string 12 from the other solar cell string 12.

In the above-described embodiment, the solar cells 30 are arranged in the vertical direction Y, but 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 the oblique direction.

In the above-described first embodiment, the disconnection portion 92 is provided in the take-out 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 take-out wiring 15 connected to the negative electrode side end portion 36 of the spare solar cell string 38. Similarly, in the second embodiment, the connection circuit 421 is provided in the terminal box 403a, but the present invention is not limited thereto. 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 as in the conventional case, or may have a polygonal shape such as a triangle, a quadrangle, a pentagon, or a hexagon. Further, it may be circular or elliptical.

In the above-described embodiment, the conductive adhesive material 32 is adhered only on the bus bar electrode portions 50 and 70, but the present invention is not limited thereto. The conductive adhesive 32 may be provided over the first finger electrode portions 51, 71 and the base electrode layers 45, 65 from above the bus bar electrode portions 50, 70 toward the outer end portion.

In the above-described embodiment, the connection 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. The shape of the connecting member is not particularly limited. The connecting member may be plate-shaped or linear.

As long as the above-described embodiment is included in the technical scope of the present invention, each component can be freely replaced or added between the respective embodiments.

1,400 Solar cell module 10,410 1st translucent substrate (1st substrate)
11 Second translucent substrate (second substrate)
12 Solar cell strings (series connection group)
14 1st take-out wiring 15 2nd take-out wiring 16a, 16b Encapsulant 20 Board body 21a to 21f Lid member 22a Through hole (spare side through hole)
22b to 22f through hole (power generation side through hole)
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 Bus bar electrode part 51a to 51e First finger electrode part 52a to 52e Second finger electrode part 70 Bus bar electrode part 71a to 71e First finger electrode part 72a to 72e Second Finger electrode part 91a, 91f Branch wiring part 92 Disconnection part (disconnection part)
96a to 96f Branch wiring part 110 Connection lid member 111 Conductive foil (connection member)
150 External load 414a to 414f Extract wiring 421 Connection circuit 431a to 431f Branch wiring unit 432 Switch unit

Claims (7)

A plurality of solar cell strings are arranged between the first base material, the second base material, the first base material, and the second base material, and between the first base material and the second base material. Is a solar cell module sealed with a sealing material.
The plurality of solar cell strings include a power generation side solar cell string, each of which is electrically connected in parallel to an external load, and a spare solar cell string that is electrically open to the external load.
Outside the encapsulant, a solar cell capable of electrically opening one power generation side solar cell string to the external load and electrically connecting the spare solar cell string to the external load. module. The solar cell string has a series connection group in which one or a plurality of solar cell cells are electrically connected in series via a conductor, 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 take-out wiring and / or the conductor is exposed from the opening of the power generation side through hole.
The sun according to claim 1, wherein a part of the take-out wiring of the spare solar cell string is broken, the take-out wiring is exposed from the opening of the spare side through hole, and the broken wire portion is located in the exposed portion. Battery module. Has a connection circuit
The solar cell string has a series connection group in which one or a plurality of solar cell cells are electrically connected in series, and an extraction wiring for extracting electricity from the series connection group.
One end of the take-out wiring is exposed from the sealing material.
The connection circuit electrically connects the outlet wiring of the power generation side solar cell string outside the sealing material, and electrically opens the spare solar cell string to the power generation side solar cell string. The solar cell module according to claim 1. A repaired solar cell module obtained by repairing the solar cell module according to claim 2, wherein an abnormality has occurred in one power generation side solar cell string.
The take-out wiring of the one power generation side solar cell string or the conductor is cut off in the power generation side through hole.
A repaired solar cell module comprising a connecting member that electrically connects a broken portion of the take-out wiring in the spare side through hole and electrically connects the spare solar cell string to the external load. A repaired solar cell module obtained by repairing the solar cell module according to claim 3, wherein an abnormality has occurred in one power generation side solar cell string.
The connection circuit is partially disconnected to electrically open the one power generation side solar cell string to another power generation side solar cell string, and open the spare solar cell string to the other power generation side solar cell string. A repaired solar cell module that is electrically connected to. A plurality of solar cell strings are arranged between the first base material, the second base material, the first base material, and the second base material, and between the first base material and the second base material. Is a repair method for solar cell modules sealed with a sealing material.
The plurality of solar cell strings include a power generation side solar cell string, each of which is electrically connected in parallel to an external load, and a spare solar cell string that is electrically open to the external load. It is a repair method of
When there is an abnormality in one power generation side solar cell string, the one power generation side solar cell string is electrically opened to the external load outside the sealing material, and the spare solar cell string is released. A method for repairing a solar cell module that is electrically connected to the external load. A plurality of solar cell strings are arranged between the first base material, the second base material, the first base material, and the second base material, and between the first base material and the second base material. Is a solar cell module sealed with a sealing material.
Each solar cell string has a series connection group in which one or more solar cells are electrically connected in series, and an extraction wiring for extracting electricity from the series connection group.
A solar cell module in which one end of each take-out wiring is exposed from the sealing material and can be connected to each other directly or via another member outside the sealing material.

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