JP2023180973A - Solar cell panel wiring structure - Google Patents

Abstract

To achieve a solar cell panel wiring structure capable of performing maintenance work of a photovoltaic power generation system from the outdoor side of a building.SOLUTION: A solar cell panel 1 includes a panel body 39 including: a plurality of solar cells; and a positive terminal part and a negative terminal part which are disposed on an indoor surface of the panel body 39 and which are electrically connected to the plurality of solar cells. Of the two solar cell panels 1 arranged side by side in the left and right direction, the positive terminal part included in one solar cell panel 1 and the negative terminal part included in the other solar cell panel 1 are connected via an intermediate connection cable 6 at least partially arranged on the outdoor side rather than the panel body 39.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present invention relates to a wiring structure for a solar cell panel that constitutes an outer peripheral wall of a building.

In recent years, in order to realize ZEB (Zero Energy Building), the demand for solar power generation using the outer peripheral walls of buildings and other structures has increased. Therefore, it has been considered to use solar cell panels that can convert light energy into electrical energy in curtain wall panels that constitute the outer peripheral wall of buildings.

26 and 27 show a building 101, which is described in Japanese Unexamined Patent Application Publication No. 2014-136919, in which a part of the outer peripheral wall is formed by a solar cell panel 100.

The outer peripheral wall of the building 101 is constituted by a curtain wall 102. The curtain wall 102 is attached to the floor slab 103 using brackets 104.

The curtain wall 102 includes a plurality of mullions 105, a plurality of mullions 106, a plurality of glass panels 107, and a plurality of solar cell panels 100.

Each of the glass panel 107 and the solar panel 100 is built in a part surrounded on all sides by mullions 105 and mullions 106. The glass panel 107 constitutes a window portion and is provided in a portion corresponding to the indoor space. On the other hand, the solar cell panel 100 constitutes a wall portion and is provided in a portion (spandrel portion) corresponding to the attic space and the underfloor space.

The solar cell panel 100 includes a panel body 108 and a positive terminal portion and a negative terminal portion (not shown).

Panel body 108 has a plurality of solar cells. A plurality of solar cells are connected to each other in series to form a circuit (solar cell module).

The positive terminal section and the negative terminal section are provided on the indoor surface (back surface) of the panel body 108, and are electrically connected to both ends of the circuit. The positive terminal section and the negative terminal section are housed in a terminal box 109. Terminal box 109 is arranged in a space between solar cell panel 100 and inner wall material 110. Further, a positive current collecting cable 111 is connected to the positive terminal portion, and a negative current collecting cable 112 is connected to the negative terminal portion.

The plurality of solar cell panels 100 are connected to each other in series and constitute a solar cell group. For this purpose, among the two solar panels 100 arranged adjacent to each other in the left and right direction, the positive current collector cable 111 of one solar panel 100 and the negative current collector cable of the other solar panel 100 are connected to each other. 112 are drawn out from the space between the solar cell panel 100 and the inner wall material 110 into the indoor space, and are connected inside a cover (not shown) placed in the indoor space.

Each of the solar cell groups is connected to a power conditioner installed in the building by a dedicated output cable 113. This allows the power generated by multiple solar cells to be consolidated into the power conditioner. The power collected by the power conditioner is converted from DC power to AC power, which can be used inside and outside the building. As a result, the primary energy balance consumed by the building can be brought close to zero, contributing to the realization of ZEB.

Japanese Patent Application Publication No. 2014-136919

In order to operate solar power generation stably over a long period of time, maintenance work on the solar power generation system is essential.

However, in the conventional structure described in Japanese Patent Application Publication No. 2014-136919, the solar cell panels 100 belonging to the same solar cell group are connected in an indoor space. Therefore, maintenance work on the solar power generation system cannot be performed from the outside of the building 101, but must be performed from the indoor side of the building 101. Specifically, a maintenance worker needs to enter the indoor space to perform the work.

As a result, the time slots in which work can be performed are likely to be restricted to nighttime, holidays, etc., and the number of days required for maintenance work may increase. Furthermore, in order to carry out maintenance work, it is necessary to remove the cover placed in the indoor space, which may damage interior decoration such as flooring and inner walls.

Note that, conventionally, cables of solar battery panels that constitute the outer peripheral wall of a building have been connected in a space above the ceiling or a space under the floor. In this case, in addition to the problems that occur with the conventional structure described in Japanese Patent Application Laid-open No. 2014-136919, maintenance workers are forced to work in narrow attic spaces and underfloor spaces, resulting in low work efficiency. This may cause problems such as: Further, problems arise in that it becomes difficult to identify cables and to identify defective locations.

An object of the present invention is to provide a solar cell panel wiring structure that allows maintenance work on a solar power generation system to be performed from the outside of a building.

A wiring structure for a solar cell panel according to one aspect of the present invention relates to a wiring structure for a solar cell panel that constitutes an outer peripheral wall of a building.
The solar panel includes a panel body including a plurality of solar cells, and a positive terminal portion and a negative terminal arranged on an indoor surface of the panel body and electrically connected to the plurality of solar cells. It has a section and.
Of the two solar cell panels arranged in a predetermined direction, the positive terminal portion provided on one of the solar cell panels and the negative terminal portion provided on the other solar cell panel. is connected via a connection cable, at least a portion of which is disposed on the outdoor side of the panel body.

In the wiring structure of a solar cell panel according to one aspect of the present invention, the connection cable is composed of at least two cables connected via a connector connection part arranged on the outdoor side of the panel main body. be able to.

In the solar cell panel wiring structure according to one aspect of the present invention, the predetermined direction is the left-right direction, and an insertion portion such as a through hole or a notch is provided between the two solar panels in the left-right direction. Vertical frames can be placed. The connection cable can be inserted and disposed through the insertion portion of the vertical frame.

In the wiring structure of a solar cell panel according to one aspect of the present invention, the predetermined direction is an up-down direction, a glass panel is arranged between the two solar cell panels in the up-down direction, and A vertical frame having an insertion portion such as a through hole or a notch can be arranged on one side of the solar cell panel in the left-right direction. The connection cable can be inserted and disposed through the insertion portion of the vertical frame.

In the wiring structure of a solar cell panel according to one aspect of the present invention, the vertical frame has a cable accommodating portion extending in the vertical direction on the outdoor side of the panel main body, and a part of the connection cable is It can be accommodated in the cable accommodating section.
In this case, the vertical frame has a vertical frame main body fixed to the frame and a decorative material fixed to the outdoor side of the vertical frame main body, and the cable accommodating part is provided in the decorative material. be able to. Alternatively, the cable accommodating portion may be provided in the vertical frame main body.
Further, the vertical frame may have an openable/closeable lid portion that communicates with the cable housing portion.

In the solar cell panel wiring structure according to one aspect of the present invention, the solar cell panel is connected to a positive current collecting cable connected to the positive terminal portion and a negative current collecting cable connected to the negative terminal portion. The cable further includes a cable, and both ends of the connection cable are connected to the positive current collector cable provided on the one solar cell panel and the positive current collector cable provided on the other solar cell panel. Each can be connected to a negative current collecting cable.

In the solar cell panel wiring structure according to one aspect of the present invention, a first connector may be provided at the end of the positive current collecting cable, and a second connector may be provided at the end of the negative current collecting cable. You can prepare.
Furthermore, of both ends of the connection cable, one end connected to the positive current collection cable may be provided with the second connector, and the other end connected to the negative current collection cable. The first connector may be provided at the first connector.

According to the wiring structure of the solar cell panel according to one aspect of the present invention, maintenance work on the solar power generation system can be performed from the outside of the building.

FIG. 1 is a schematic diagram of a building to which a solar cell panel wiring structure according to a first example of the embodiment is applied, as viewed from the outside. FIG. 2 is a longitudinal cross-sectional view corresponding to the cross section taken along the line AA in FIG. FIG. 3 is a cross-sectional view corresponding to the section taken along line BB in FIG. FIG. 4 is a longitudinal sectional view corresponding to the section taken along the line CC in FIG. FIG. 5 is a partially enlarged view of FIG. 3. FIG. 6 is a cross-sectional view corresponding to the cross section taken along line DD in FIG. FIG. 7 is a cross-sectional view corresponding to the section taken along line EE in FIG. FIG. 8 is a cross-sectional view of the mullion taken out from FIG. 5. FIG. 9 is a side view seen from the right side of FIG. 8. FIG. 10 is a cross-sectional view of the mullion main body taken out from FIG. 8. FIG. 11 is a front view seen from the lower side (outdoor side) of FIG. FIG. 12 is a side view seen from the left side of FIG. 10. FIG. 13 is a cross-sectional view showing the decorative material taken out from FIG. 8. FIG. 14 is a front view seen from the lower side (outdoor side) of FIG. 13. FIG. 15 is a schematic diagram of the first example of the embodiment when the solar cell panel is taken out and viewed from the front side (outdoor side). FIG. 16 is a schematic diagram showing the wiring structure of the solar cell panel more specifically than FIG. 1. FIG. 17 is a partially enlarged view of the intermediate portion in the left-right direction of FIG. 16. FIG. 18 is a partially enlarged view of one side portion (left side portion) in the left-right direction of FIG. 16. FIG. FIG. 19 is a partially enlarged view of the other side portion (right side portion) in the left-right direction of FIG. 16. FIG. FIG. 20 is a diagram corresponding to FIG. 15, showing a second example of the embodiment. FIG. 21 is a diagram corresponding to FIG. 18, showing a second example of the embodiment. FIG. 22 is a diagram corresponding to FIG. 15, showing a third example of the embodiment. FIG. 23 is a diagram corresponding to FIG. 18, showing a third example of the embodiment. FIG. 24 is a diagram corresponding to FIG. 15, showing a fourth example of the embodiment. FIG. 25 is a diagram corresponding to FIG. 18, showing a fourth example of the embodiment. FIG. 26 is a schematic diagram showing a building to which a conventional solar cell panel wiring structure is applied. FIG. 27 is a cross-sectional view corresponding to the cross section taken along line FF in FIG. 26.

[First example of embodiment]
A first example of the embodiment will be described using FIGS. 1 to 19.

[Overall structure of the building]
FIG. 1 shows a building 2 in which part of the outer peripheral wall is constituted by solar cell panels 1 wired according to the wiring structure of this embodiment. The building 2 includes a solar power generation system 3 including a solar panel 1, and a curtain wall 4 including the solar panel 1 constitutes an outer peripheral wall.

In the following description, the out-of-plane direction refers to the depth direction (projection direction) when the solar cell panel 1 (curtain wall 4) is viewed from the front. In addition, the in-plane direction refers to a direction (direction) perpendicular to the out-of-plane direction. Further, the outdoor side in the out-of-plane direction is simply referred to as the "outdoor side," and the indoor side in the out-of-plane direction is simply referred to as the "indoor side." Moreover, the left-right direction (horizontal direction) and the up-down direction (vertical direction) refer to each direction when the solar cell panel 1 is viewed from the front. Further, one side in the left-right direction refers to the left side in FIGS. 1, 3, 5 to 8, 10, 11, and 13 to 19, and the other side in the left-right direction refers to the left side in FIGS. ~8, refers to the right side of FIGS. 10, 11, and 13 to 19.

The solar power generation system 3 includes a plurality of solar panels 1, various cables 5 to 7, a power conditioner 8, a storage battery 9, and the like.

The solar panel 1 generates electricity by converting sunlight energy into electrical energy. The power generated by the solar panel 1 is collected through various cables 5 to 7 to a power conditioner 8 installed in an equipment room on the upper floor of the building 2. Then, the power collected in the power conditioner 8 is converted from DC power to AC power and used. Further, the storage battery 9 may store power. In addition, in this example, a case will be explained in which the power conditioner 8 and the storage battery 9 are installed on the top floor of the building 2. However, when implementing the present invention, the installation location of the power conditioner and the storage battery is on the lower floor of the building. There are no particular limitations, such as a basement.

The output voltage of the solar cell group 10 is set lower than the rated input voltage of the power conditioner. For this reason, in this example, a plurality of (several to more than ten) solar cell panels 1 are connected in series to form a solar cell group 10 in accordance with the rated input voltage of the power conditioner 8. There is. Each solar cell group 10 is connected to a power conditioner 8 through a dedicated output cable 5. Note that FIGS. 1 and 16 show an example in which one solar cell group 10 is composed of 16 solar cell panels 1. Further, in FIG. 1, common symbols 1G to 5G are attached to solar cell panels 1 belonging to the same solar cell group 10.

A plurality of solar cell panels 1 belonging to the same solar cell group 10 are connected in series with each other, but depending on the arrangement direction of the two solar cell panels 1 connected in series, The wiring structure is roughly divided into the following two types.

The first wiring structure is a wiring structure of two solar cell panels 1 arranged side by side in the left-right direction.
Two solar panels 1 arranged adjacent to each other in the left-right direction are connected in series to each other using an intermediate connection cable 6 arranged to span the two solar panels 1 in the left-right direction. It is connected to the.

The second wiring structure is a wiring structure of two solar cell panels 1 arranged side by side in the vertical direction.
Two solar panels 1 are arranged vertically side by side with a glass panel 13 in between, which will be described later, and an end connection cable is arranged to extend vertically across the two solar panels 1. 7 and are connected in series to each other.

In this example, the type of cable used for connection differs depending on the arrangement direction of two solar panels 1 connected in series, and the wiring structure also differs. The wiring structure has been devised so that the maintenance work in step 3 can be performed from outside. Therefore, in this example, each of the intermediate connection cable 6 and the end connection cable 7 corresponds to the connection cable described in the claims. In addition, when implementing the present invention, only one of the first wiring structure and the second wiring structure is implemented depending on the number and arrangement direction of the solar cell panels constituting the solar cell group. You can also do that.

Hereinafter, the structure of the curtain wall 4 that constitutes the outer peripheral wall of the building 2 will be explained, and then the details of the wiring structure of the solar cell panel 1 using the intermediate connection cable 6 and the end connection cable 7 will be explained.

[Overall structure of curtain wall]
The curtain wall 4 of this example is a mullion-type curtain wall, and includes a plurality of mullions 11 and 11a, a plurality of mullions 12, a plurality of glass panels 13, and a plurality of solar cell panels 1. Equipped with In this example, the mullions 11 and 11a correspond to the vertical frame described in the claims.

The mullions 11 and 11a are arranged with their longitudinal directions facing up and down, and are fixed to the outdoor side of the frame 15 via brackets 14. The mullions 12 are arranged with their longitudinal directions facing the left-right direction, and are connected so as to bridge between the mullions 11 (11a) adjacent in the left-right direction. The glass panel 13 is built into an opening surrounded on all sides by mullions 11 (11a) and blinds 12, and constitutes a window portion of the building 2. The solar panel 1 is built into an opening surrounded on all sides by mullions 11 (11a) and mullions 12, and constitutes a wall portion of the building 2 called a spandrel portion or a waist portion.

Therefore, in the building 2 of this example, the glass panels 13 and the solar battery panels 1 are arranged consecutively in the left-right direction with the mullions 11 in between, and the glass panels 13 and the solar battery panels are arranged in the vertical direction. 1 are arranged alternately with no eyes 12 in between.

The specific structure of each component of the curtain wall 4 will be described below with reference to FIGS. 2 to 15.

<Mulled>
The mullions 11 and 11a have different structures due to the difference in their placement positions in the building 2. That is, a mullion 11 is arranged in the middle part of the building 2 in the left-right direction, and the glass panel 13 and the solar panel 1 are arranged on both sides in the left-right direction, and a mullion 11 is arranged in the end part of the building 2 in the left-right direction. and the mullion 11a in which the solar cell panel 1 is arranged only on one side in the left-right direction (one side or the other side in the left-right direction) have different structures.

As shown in FIGS. 3 and 5, the mullion 11 includes a mullion main body 16, a decorative material 17, glass rims (not shown), and PV rims 18a and 18b, each of which is made of extruded aluminum alloy. It is composed of.

On the other hand, as shown in FIGS. 6 and 7, the mullion 11a includes a mullion body 16, a decorative material 17, a glass rim (not shown), and a PV rim, each of which is made of extruded aluminum alloy material. It is composed of either the ridge 18a or the PV ridge 18b, and either the cover material 19a or the cover material 19b. The mullion 11a does not include the two types of PV ridges 18a and 18b, but includes one type of PV ridge 18a (or 18b) and one type of cover material 19a (or 19b).

The mullion main body 16, which is a part common to the mullions 11 and 11a, is fixed to the outdoor side of the frame 15, and integrally includes a prismatic section 20, a flat plate section 21, and a connecting plate section 22. In this example, the mullion main body 16 corresponds to the vertical frame main body described in the claims.

The prismatic section 20 has a hollow prismatic shape and is provided at the indoor end of the mullion main body 16. The flat plate portion 21 has a flat plate shape and is arranged with the thickness direction facing out-of-plane. The flat plate portion 21 is provided at the outdoor end of the mullion main body 16. The connecting plate portion 22 has a flat plate shape and is arranged with the plate thickness direction facing the left-right direction. The connecting plate portion 22 is provided at an intermediate portion of the mullion main body 16 in the out-of-plane direction, and connects the prismatic portion 20 and the flat plate portion 21 in the out-of-plane direction. Specifically, the connecting plate portion 22 connects the middle portions of the prismatic portion 20 and the flat plate portion 21 in the left-right direction. In the illustrated example, the connecting plate part 22 is not arranged in the center of the prismatic part 20 and the flat plate part 21 in the left-right direction, but is arranged slightly to one side in the left-right direction (left side in FIG. 5). ing. In addition, each of the glass panel 13 and the solar cell panel 1 is arranged between two connecting plate parts 22 that are arranged to face each other in the left-right direction.

A decorative material 17, which is a part common to the mullions 11 and 11a, is fixed to the outdoor side surface of a flat plate part 21 constituting the mullion main body 16 using bolts 23 and nuts 24. Thereby, the decorative material 17 covers the mullion main body 16 from the outdoor side.

The decorative material 17 includes a pair of side plate portions 25a and 25b arranged parallel to each other and separated from each other in the left-right direction, a bottom plate portion 26 that connects the indoor side portions of the pair of side plate portions 25a and 25b, and a pair of side plate portions 25a and 25b. A pair of fins 27a, 27b protrudes in the left-right direction so as to approach each other from the middle portions of the side plates 25a, 25b in the out-of-plane direction, and is attached so as to span over the pair of fins 27a, 27b. It has a lid part 28.

The indoor surface of the bottom plate portion 26 is provided with a dovetail groove portion. The head of the bolt 23 is locked in the dovetail groove.

The decorative material 17 of this example has an intermediate connection cable 6 in a portion surrounded on all sides by a pair of side plate portions 25a, 25b, a bottom plate portion 26, a pair of fin portions 27a, 27b, and a lid portion 28. A cable accommodating portion 29 extending in the vertical direction is provided for accommodating the intermediate portion or the intermediate portion of the end connecting cable 7.

The lid portion 28 has a substantially crank-shaped cross-sectional shape and closes an opening 30 of the cable accommodating portion 29 provided between the pair of fin portions 27a and 27b.

The end portion of the lid portion 28 on the other side in the left-right direction (the right side in FIG. 5) is fixed from the outdoor side to the fin portion 27b on the other side in the left-right direction with a lid screw 31. Further, the end portion of the lid portion 28 on one side in the left-right direction engages with the fin portion 27a on the one side in the left-right direction in an out-of-plane direction.

The lid part 28 can be removed from the pair of fins 27a and 27b toward the outdoors by removing the lid screw 31. Therefore, the lid portion 28 can open and close the opening portion 30 communicating with the cable housing portion 29.

The mullions 11 and 11a hold the respective vertical sides of the glass panel 13 and the solar cell panel 1. For this purpose, the mullion 11 has a glass rim and two types of PV rims 18a and 18b. Furthermore, the mullion 11a has a glass rim and one type of PV rim 18a (also 18b).

Each of the PV ridges 18a and 18b has a substantially L-shaped cross-sectional shape, and is locked so as to be spanned between the outdoor side portion of the prismatic portion 20 and the connecting plate portion 22. With the PV ridge 18a locked to one side in the left-right direction of the mullion main body 16, the outdoor side portion of the PV ridge 18a, the outdoor half of the connecting plate portion 22, and the one side in the left-right direction of the flat plate portion 21. A holding groove 32a is formed in a portion surrounded on three sides by the holding groove 32a. The other longitudinal side of the solar cell panel 1 in the left-right direction is held in the holding groove 32a. On the other hand, when the PV ridge 18b is locked to the other side of the mullion main body 16 in the left-right direction, the outdoor side portion of the PV ridge 18b, the outdoor half of the connecting plate portion 22, and the flat plate portion 21 are connected to each other. A holding groove 32b is formed in a portion surrounded on three sides by the other side portion in the left and right direction. The holding groove 32b holds one vertical side of the solar cell panel 1 in the left-right direction.

As shown in FIG. 6, the mullion body 16 constituting the mullion 11a disposed at one end of the building 2 in the left-right direction has a PV ridge 18b locked on the other side in the left-right direction. A cover member 19a is secured to one side in the left-right direction. On the other hand, as shown in FIG. 7, a PV ridge 18a is engaged on one side of the mullion main body 16 of the mullion 11a disposed at the other end of the building 2 in the left-right direction. A cover member 19b is secured to the other side in the left-right direction.

In this example, the intermediate portion of the intermediate connecting cable 6 is disposed in the cable accommodating portion 29 of the mullion 11, and both side portions of the intermediate connecting cable 6 are connected to the panel body 39, which will be described later, constituting the solar panel 1. A plurality of through holes 33a to 36b and cutouts 58a and 58b are formed in the mullion 11 in order to arrange the same indoors. In this example, the through holes 33a to 36b and the cutouts 58a and 58b correspond to the insertion portion described in the claims.

Specifically, in the bottom plate part 26 of the decorative material 17, the bottom plate part 26 is penetrated in an out-of-plane direction at height positions corresponding to the upper and lower parts of the solar cell panel 1, respectively. First through holes 33a and 33b are formed.

Further, a second through hole 34a penetrating through the flat plate part 21 in the out-of-plane direction is provided in a portion of the flat plate part 21 constituting the mullioned main body 16 that faces each of the first through-holes 33a and 33b in the out-of-plane direction. , 34b.

Also, the height is approximately the same as the first through hole 33b and the second through hole 34b, which are formed at a height position corresponding to the lower part of the solar cell panel 1 in the connecting plate part 22 constituting the mullion main body 16. A third through hole 35 passing through the connecting plate portion 22 in the left-right direction is formed at the position shown in FIG.

Furthermore, among the PV ridges 18a that are locked on one side of the mullion body 16 in the left-right direction, a fourth hole that passes through the PV ridges 18a in the left-right direction is located at approximately the same height as the third through hole 35. A notch 58a is formed that penetrates the hole 36a and the PV ridge 18a in an out-of-plane direction. Also, among the PV ridges 18b that are locked on the other side of the mullion body 16 in the left and right direction, a first through hole 33a and a second through hole 33a are formed at a height position corresponding to the upper part of the solar cell panel 1. A fourth through hole 36b that passes through the PV ridge 18b in the left-right direction and a notch 58b that penetrates the PV ridge 18b in an out-of-plane direction are formed at substantially the same height as the through hole 34a.

In this example, each of the first through holes 33a, 33b, the second through holes 34a, 34b, and the third through hole 35 is formed by a vertically long elongated hole. On the other hand, each of the fourth through holes 36a and 36b is constituted by a round hole. Further, a grommet 37 is attached to the inner peripheral edge of each of the fourth through holes 36a and 36b.

Furthermore, in this example, the middle part of the end connection cable 7 is disposed in the cable accommodating part 29 of the mullion 11a, and both sides of the end connection cable 7 are connected to the panels configuring the solar panel 1, which will be described later. In order to arrange it indoors than the main body 39, similarly to the mullion 11, the mullion 11a has first through holes 33a, 33b, second through holes 34a, 34b, third through hole 35, and A fourth through hole 36a (or 36b) and a notch 58a (or 58b) are formed. However, in the mullion 11a arranged at the left and right ends of the building 2, the end connection cable 7 cannot be inserted through all of the first through holes 33a, 33b to the fourth through hole 36a (or 36b). However, as will be described later, it does not pass through some of the holes.

In addition, in this example, the height positions of the first through hole 33a, the second through hole 34a, and the fourth through hole 36b are approximately the same, and the first through hole 33b, the second through hole 34b, and the third through hole The height positions of the through hole 35 and the fourth through hole 36a are approximately the same. However, when implementing the present invention, the height positions of the various through holes can be changed as appropriate. For example, the height position of the first through hole 33a and the second through hole 34a arranged on the upper side can be made lower than the height position of the fourth through hole 36a, or the height position of the first through hole 33a and the second through hole 34a arranged on the lower side The height positions of the through hole 33b and the second through hole 34b can be made higher than the respective height positions of the third through hole 35 and the fourth through hole 36b.

<No eyes>
The blind 12 is composed of a blind main body 59 made of an extruded aluminum alloy material, and a pair of ridges 60a and 60b.

Among the ribs 60a and 60b, one of the ribs 60a is locked to the upper portion of the outdoor end of the blind main body 59. On the other hand, the other of the ribbed edges 60a and 60b is locked to the lower part of the outdoor end of the blind main body 59.

A holding groove 61a is formed in the upper part of the blind 12, which is surrounded on three sides by the blind main body 59 and the ridge 60a. The lower sides of each of the glass panel 13 and the solar cell panel 1 are held in the holding groove 61a.

A holding groove 61b is formed in the lower portion of the blind 12, which is surrounded on three sides by the blind main body 59 and the ridge 60b. The upper sides of the glass panel 13 and the solar cell panel 1 are each held in the holding groove 61b.

<Glass panel>
In the case of this embodiment, the glass panel 13 is double-glazed glass made up of two glass plates 38, and is built in a portion surrounded on all sides by mullions 11 and blinds 12. The glass panel 13 constitutes a window portion of the building 2 and is provided in a portion corresponding to the indoor space.

<Solar panel>
The solar panel 1 generates electricity by converting sunlight energy into electrical energy, and is built in a part surrounded on all sides by mullions 11 and blinds 12. In this example, the solar panel 1 constitutes a wall portion of the building 2 and is provided in a portion corresponding to the attic space and the underfloor space. However, when carrying out the present invention, a see-through type solar cell panel may be used so that the window portion of a building can be constructed from the solar cell panel.

As shown in a schematic diagram in FIG. 15, the solar cell panel 1 includes a panel main body 39, a positive terminal portion 40, a negative terminal portion 41, a positive current collecting cable 42, and a negative current collecting cable 43. are doing. The solar cell panel 1 of this example includes one positive terminal section 40 and one negative terminal section 41, and one positive current collection cable 42 and one negative current collection cable 43.

The panel main body 39 includes a light-transmitting front plate 44 such as a glass plate placed on the outdoor side which is the light-receiving surface side, and a back plate 45 such as a glass plate placed on the indoor side which is the back side. Between the front plate 44 and the back plate 45, there are a plurality of solar cells (not shown) sealed with a transparent filler.

In this example, the outdoor surface (surface) of the panel body 39 is arranged on the same plane as the outdoor surface of the glass panel 13. Furthermore, the outdoor surfaces of the panel bodies 39 arranged in the left-right direction are also arranged on the same plane.

A plurality of solar cells are connected to each other in series or in parallel to constitute a solar cell module 46. The solar cell module 46 is configured by connecting in series a plurality of solar cells arranged adjacent to each other in the left-right direction. In this example, the panel main body 39 is equipped with only one solar cell module 46. In addition, when implementing this invention, a panel main body can also be equipped with several solar cell modules like the 3rd example and 4th example of embodiment mentioned later.

The positive terminal portion 40 and the negative terminal portion 41 are provided on the indoor surface of the panel body 39, that is, on the back surface of the back plate 45. The positive terminal section 40 and the negative terminal section 41 are electrically connected to both ends of a solar cell module 46, which is a circuit configured by connecting a plurality of solar cells to each other. Therefore, one positive terminal section 40 and one negative terminal section 41 are provided for each solar cell module 46.

The positive terminal portion 40 is disposed at an upper portion on the other side in the left-right direction of the panel body 39, and is housed in a terminal box 47a. The negative terminal portion 41 is arranged at an upper portion on one side in the left-right direction of the panel body 39, and is housed in a terminal box 47b.

One end of the positive current collector cable 42 is directly connected to the positive terminal portion 40 . A first connector 48 is provided at the other end of the positive current collection cable 42 . The positive current collection cable 42 is drawn out from the terminal box 47a toward the center of the panel body 39 in the left-right direction. Note that in FIGS. 15 to 19, the first connector 48 is represented by a circle mark (◯).

One end of the negative current collection cable 43 is directly connected to the negative terminal portion 41 . A second connector 49 is provided at the other end of the negative current collection cable 43 . The second connector 49 can be connected only to the first connector 48. The negative current collection cable 43 is drawn out from the terminal box 47b toward the center of the panel body 39 in the left-right direction. Note that in FIGS. 15 to 19, the second connector 49 is represented by a triangular mark (△).

The curtain wall 4 of this example further includes an inner wall material 56 on the indoor side of the solar cell panel 1. The inner wall material 56 is provided between the prismatic portions 20 of the mullions 11 (11a) arranged adjacent to each other in the left-right direction. Therefore, the positive terminal section 40, the negative terminal section 41, the positive current collecting cable 42, and the negative current collecting cable 43 that constitute the solar cell panel 1 are formed between the panel main body 39 and the inner wall material 56. It is located in a space with

<Wiring structure of solar panel>
In this example, a solar cell group 10 is configured by connecting a plurality of solar cell panels 1 in series. In the example shown in FIGS. 1 and 16, one solar cell group 10 is composed of 16 solar cell panels 1, and five solar cell groups 10 of 1G to 5G are arranged on one entire wall of the building 2. It is equipped with

Of the plurality of solar battery panels 1 belonging to the same solar battery group 10, two solar battery panels 1 arranged adjacent to each other in the left-right direction are connected in series with each other using the intermediate connection cable 6. Connected. In addition, among the plurality of solar cell panels 1 belonging to the same solar cell group 10, two solar cell panels 1 arranged vertically with the glass panel 13 in between are connected to each other using the end connection cable 7. are used to connect each other in series.

For this purpose, a second connector 49 is provided at one end of both ends of the intermediate connection cable 6 connected to the positive current collecting cable 42, and at the other end connected to the negative current collecting cable 43. A first connector 48 is provided at the end of the connector. Further, a second connector 49 is provided at one end of both ends of the end connection cable 7 connected to the positive current collection cable 42, and a second connector 49 is provided at the end of the other side connected to the negative current collection cable 43. A first connector 48 is provided at the end.

《First wiring structure》
In this example, the ends on both sides of the intermediate connection cable 6 connecting to two solar panels 1 arranged adjacent to each other in the horizontal direction are placed closer to the indoor side than the indoor surface of the panel main body 39. The intermediate portion of the intermediate connection cable 6 is disposed closer to the outdoors than the outdoor surface of the panel body 39.

For this purpose, as shown in FIGS. 5 and 8, the intermediate connection cable 6 is inserted through the through holes 33a to 36b and notches 58a and 58b provided in the mullion 11.

Specifically, the intermediate portion of the intermediate connection cable 6 is housed in the cable housing portion 29 of the mullion 11 with the longitudinal direction facing up and down. Then, the upper part of the intermediate connection cable 6 is bent about 90 degrees indoors with respect to the middle part of the intermediate connection cable 6, and each of the first through hole 33a, the second through hole 34a, and the notch 58b is cut out of the plane. The fourth through hole 36b is inserted through the fourth through hole 36b in the left-right direction by being bent about 90 degrees toward the other side in the left-right direction. Further, the lower part of the intermediate connection cable 6 is bent about 90 degrees indoors with respect to the middle part of the intermediate connection cable 6, and is inserted through each of the first through hole 33b and the second through hole 34b in an out-of-plane direction. At the same time, it is further bent about 90 degrees toward one side in the left-right direction, and is inserted through each of the third through hole 35, the notch 58a, and the fourth through hole 36a.

Thereby, the upper part of the intermediate connection cable 6 is inserted on the other side in the left-right direction than the mullion 11 and further indoors than the panel main body 39. Further, the lower part of the intermediate connection cable 6 is inserted on one side in the left-right direction than the mullion 11 and further indoors than the panel main body 39. Furthermore, a grommet 37 is provided between the outer peripheral surface of the intermediate connection cable 6 and the fourth through holes 36a, 36b.

In this example, by arranging the intermediate connection cable 6 as described above, the second connector 49 provided at one end of the intermediate connection cable 6 can be connected to two solar panels arranged adjacent to each other in the horizontal direction. It is connected to a first connector 48 provided on the positive current collection cable 42 of one of the solar cell panels 1 among the battery panels 1 . In addition, the first connector 48 provided at the other end of the intermediate connection cable 6 is connected to the negative current collector of the other solar panel 1 of the two solar panels 1 arranged adjacent to each other in the horizontal direction. It is connected to a second connector 49 provided on the cable 43.

In the case of this example, as shown in FIGS. 16 to 19, the positive terminal portion 40 is The horizontal arrangement of the negative terminal portion 41 and the negative terminal portion 41 are the same. Therefore, on even-numbered floors, the positive terminal section 40 and the negative terminal section 41, which are arranged close to each other in the left-right direction, are connected by the intermediate connection cable 6, whereas on odd-numbered floors, they are separated in the left-right direction. The intermediate connection cable 6 connects the positive terminal section 40 and the negative terminal section 41 arranged at the same position. In addition, in FIGS. 16 to 19, circuits formed by various cables 6 (50, 51), 7 (53, 54, 55), 42, 43 are shown with solid lines, and the circuits formed by the first connector 48 and the first A circuit formed by connection with the 2 connector 49 is shown by a broken line.

On even-numbered floors, the second connector 49 provided at one end of the intermediate connection cable 6 is connected to the solar battery panel on one side in the left-right direction among the two solar panels 1 connected by the intermediate connection cable 6. It is connected to a first connector 48 provided on one positive current collection cable 42 . Also, the first connector 48 provided at the other end of the intermediate connection cable 6 is connected to the negative side of the solar battery panel 1 on the other side in the left-right direction among the two solar panels 1 connected by the intermediate connection cable 6. It is connected to a second connector 49 provided on the current collecting cable 43.

On the other hand, on odd-numbered floors, the second connector 49 provided at one end of the intermediate connection cable 6 is connected to the other side in the left and right direction of the two solar panels 1 connected by the intermediate connection cable 6. It is connected to a first connector 48 provided on the positive current collection cable 42 of the solar cell panel 1 . Also, the first connector 48 provided at the other end of the intermediate connection cable 6 is connected to the negative side of the solar battery panel 1 on one side in the left and right direction among the two solar panels 1 connected by the intermediate connection cable 6. It is connected to a second connector 49 provided on the current collecting cable 43.

As described above, in this example, two solar panels 1 are arranged adjacent to each other in the left-right direction on both even-numbered floors and odd-numbered floors, and the middle part is arranged closer to the outdoors than the panel main body 39. They are connected in series to each other using an intermediate connecting cable 6. Note that, before the mullion 11 is fixed to the frame 15, the intermediate connection cable 6 can be attached to the mullion 11 by passing through each of the through holes 33a to 36b and the notches 58a and 58b.

The intermediate connection cable 6 of this example is composed of two cables, a first intermediate connection cable 50 and a second intermediate connection cable 51.

One end of the first intermediate connection cable 50 constitutes one end of the intermediate connection cable 6. Therefore, one end of the first intermediate connection cable 50 is provided with the second connector 49, and the other end of the first intermediate connection cable 50 is provided with the first connector 48. ing.

On the other hand, the other end of the second intermediate connection cable 51 constitutes the other end of the intermediate connection cable 6. Therefore, the other end of the second intermediate connection cable 51 is provided with the first connector 48 , and the one end of the second intermediate connection cable 51 is provided with the second connector 49 . ing.

By connecting the first connector 48 provided at the other end of the first intermediate connection cable 50 and the second connector 49 provided at the one end of the second intermediate connection cable 51, , and constitute an intermediate connection cable 6. In this example, the connector connection portion 52 between the first connector 48 of the first intermediate connection cable 50 and the second connector 49 of the second intermediate connection cable 51 is housed in the cable housing portion 29. Therefore, by removing the lid part 28 from the mullion 11, the connector connection part 52 of the intermediate connection cable 6 can be accessed from the outdoor side.

《Second wiring structure》
In this example, both ends of the end connection cable 7 that connects to two solar panels 1 arranged vertically with the glass panel 13 in between are connected to the indoor surface of the panel body 39. The intermediate portion of the end connection cable 7 is placed closer to the outdoors than the outdoor surface of the panel main body 39.

In the mullion 11a disposed at one end in the left-right direction of the building 2, as shown in FIG. It is inserted through each of the hole 34a, the notch 58b, and the fourth through hole 36b.

Specifically, the intermediate portion of the end connection cable 7 is housed in the cable housing portion 29 with the longitudinal direction facing up and down. Then, the upper part of the end connection cable 7 is bent about 90 degrees indoors with respect to the middle part of the end connection cable 7, and the two solar panels 1 are connected via the end connection cable 7. Among them, the first through hole 33a, the second through hole 34a, and the notch 58b, which are provided at a height position corresponding to the upper part of the solar cell panel 1 arranged on the upper side, are inserted in an out-of-plane direction. At the same time, it is further bent about 90 degrees toward the other side in the left-right direction, and is inserted through the fourth through hole 36b in the left-right direction. In addition, the lower part of the end connection cable 7 is bent about 90 degrees indoors with respect to the middle part of the end connection cable 7, and the two solar panels connected via the end connection cable 7 are connected. 1, the first through hole 33a, the second through hole 34a, and the notch 58b, which are provided at a height position corresponding to the upper part of the solar cell panel 1 arranged on the lower side, are arranged in an out-of-plane direction. While being inserted, it is further bent about 90 degrees toward the other side in the left-right direction, and is inserted through the fourth through hole 36b in the left-right direction.

As a result, each of the upper and lower parts of the end connection cable 7 is located on the other side in the left-right direction of the mullion 11a disposed at one end of the building 2 in the left-right direction, and closer to the panel body 39. It is also inserted on the indoor side. Furthermore, a grommet 37 (see FIG. 5, etc.) is provided between the outer peripheral surface of the end connection cable 7 and the fourth through hole 36b.

In this example, by arranging the end connection cable 7 as described above, the second connector 49 provided at one end of the end connection cable 7 is connected to the second connector 49 by the end connection cable 7. It is connected to a first connector 48 provided on a positive current collection cable 42 of the lower solar cell panel 1 among the solar cell panels 1 . Also, the first connector 48 provided at the other end of the end connection cable 7 is connected to the solar cell panel 1 disposed on the upper side of the two solar panels 1 to which the end connection cable 7 connects. It is connected to a second connector 49 provided on the negative current collecting cable 43 of. As a result, the two solar panels 1 arranged vertically with the glass panel 13 in between can be connected to each other using the end connection cable 7 whose middle part is arranged on the outdoor side of the panel main body 39. are connected to each other in series. Note that the end connection cable 7 is inserted through each of the through holes 33a, 34a, 36b and the notch 58b before fixing the mullion 11a disposed at one end of the building 2 in the left and right direction to the frame 15. It can be attached to the mullion 11a.

On the other hand, in the mullion 11a disposed at the other end in the left-right direction of the building 2, as shown in FIG. 33b, the second through hole 34b, the third through hole 35, the notch 58a, and the fourth through hole 36a.

Specifically, the intermediate portion of the end connection cable 7 is housed in the cable housing portion 29 with the longitudinal direction facing up and down. Then, the upper part of the end connection cable 7 is bent about 90 degrees indoors with respect to the middle part of the end connection cable 7, and the two solar panels 1 are connected via the end connection cable 7. Among them, the first through hole 33b and the second through hole 34b provided at a height position corresponding to the lower part of the solar cell panel 1 arranged on the upper side are inserted in the out-of-plane direction, and further left and right. It is bent approximately 90 degrees toward one side in the direction, and is inserted through each of the third through hole 35, the notch 58a, and the fourth through hole 36a. In addition, the lower part of the end connection cable 7 is bent about 90 degrees indoors with respect to the middle part of the end connection cable 7, and the two solar panels connected via the end connection cable 7 are connected. 1, each of the first through hole 33b and the second through hole 34b provided at a height position corresponding to the lower part of the solar cell panel 1 arranged on the lower side is inserted in an out-of-plane direction, Furthermore, it is bent approximately 90 degrees toward one side in the left-right direction, and is inserted through each of the third through hole 35, the notch 58a, and the fourth through hole 36a.

As a result, each of the upper and lower parts of the end connection cable 7 is located on one side in the left-right direction of the mullion 11a disposed at the other end of the building 2 in the left-right direction, and closer to the panel body 39. It is also inserted on the indoor side. Furthermore, a grommet 37 (see FIG. 5, etc.) is provided between the outer peripheral surface of the end connection cable 7 and the fourth through hole 36a.

In this example, by arranging the end connection cable 7 as described above, the second connector 49 provided at one end of the end connection cable 7 is connected to the second connector 49 by the end connection cable 7. It is connected to a first connector 48 provided on a positive current collection cable 42 of the lower solar cell panel 1 among the solar cell panels 1 . Also, the first connector 48 provided at the other end of the end connection cable 7 is connected to the solar cell panel 1 disposed on the upper side of the two solar panels 1 to which the end connection cable 7 connects. It is connected to a second connector 49 provided on the negative current collecting cable 43 of. As a result, the two solar panels 1 arranged vertically with the glass panel 13 in between can be connected to each other using the end connection cable 7 whose middle part is arranged on the outdoor side of the panel main body 39. are connected to each other in series. Note that, before fixing the mullion 11a disposed at the other end of the building 2 in the left-right direction to the frame 15, the end connection cable 7 has the through holes 33b, 34b, 35, 36a and the cutout 58a. It can be inserted and attached to the mullion 11a.

The end connection cable 7 of this example is composed of three cables: a first end connection cable 53, a second end connection cable 54, and a relay cable 55.

One end of the first end connection cable 53 constitutes one end of the end connection cable 7. Therefore, one end of the first end connection cable 53 is provided with a second connector 49 , and the other end of the first end connection cable 53 is provided with a first connector 48 . It is equipped.

On the other hand, the other end of the second end connection cable 54 constitutes the other end of the end connection cable 7. Therefore, the other end of the second end connection cable 54 is provided with a first connector 48 , and the one end of the second end connection cable 54 is provided with a second connector 49 . It is equipped.

Further, the relay cable 55 includes a second connector 49 at one end, and a first connector 48 at the other end.

Then, the first connector 48 provided at the other end of the first end connection cable 53 and the second connector 49 provided at the one end of the relay cable 55 are connected, and the second By connecting the second connector 49 provided at one end of the end connection cable 54 and the first connector 48 provided at the other end of the relay cable 55, the end connection cable 7 It consists of In this example, a connector connecting portion 52a between the first connector 48 of the first end connecting cable 53 and the second connector 49 of the relay cable 55, and a connector connecting portion 52a between the first connector 48 of the first end connecting cable 53 and the second connector 49 of the second end connecting cable 54 and the relay cable 55 are connected. A connector connecting portion 52b with the first connector 48 is accommodated in the cable accommodating portion 29. Therefore, by removing the lid part 28 from the mullion 11a, the connector connection parts 52a and 52b of the end connection cable 7 can be accessed from the outdoor side.

In this example, the positions and sizes of the through holes 33a to 36b and the cutouts 58a and 58b are set so that the intermediate connection cable 6 and the end connection cable 7 are not damaged at each bending part, and the intermediate connection cable 6 and the end connection cable 7 are The bending radius of the cable 6 and the end connection cable 7 is ensured to be large to some extent.

In this example, each solar cell group 10 is connected to a power conditioner 8 via an output cable 5. Specifically, among the plurality of solar cell panels 1 constituting the solar cell group 10, the positive terminal portion 40 and the negative terminal portion 41 of two solar cell panels 1 arranged at both ends are connected. , is connected to a power conditioner 8 installed on the top floor of the building 2 via an output cable 5.

Further, the output cable 5 is accommodated in a cable accommodating portion 29 provided in the mullions 11 and 11a. Therefore, the size of the cross-sectional area of the cable accommodating part 29 is determined based on the number and thickness of the various cables 5 to 7 to be accommodated in the cable accommodating part 29. The output cable 5 is led from the cable housing section 29 of the mullions 11 and 11a through the beam section 57 of the building 2 to the power conditioner 8 installed on the top floor.

According to the building 2 having the wiring structure of the solar cell panel 1 as described above, maintenance work on the solar power generation system 3 can be performed from outside.
That is, in this example, a plurality of solar cell panels 1 constituting the same solar cell group 10 are connected to each other using intermediate connection cables 6 and end connection cables whose respective intermediate portions are disposed on the outdoor side of the panel body 39. 7 are used to connect them in series. Therefore, a maintenance worker can access the intermediate portions of the intermediate connection cable 6 and the end connection cable 7 from the outdoors using a gondola or the like. It is possible to inspect the energization status of the Therefore, it is possible to check whether there is a problem with the solar cell panel 1 from outside. As a result, maintenance work on the solar power generation system can be performed from outside.

As a result, the time required for maintenance work is not restricted, and the number of days required for maintenance work can be shortened. Furthermore, since maintenance work can be performed from outside, there is no need to damage interior decorations such as flooring and interior walls. Furthermore, since maintenance work can be performed outdoors, work efficiency can be improved compared to when maintenance work is performed in a narrow space such as an attic space or an underfloor space. Furthermore, it is possible to easily determine whether each cable is good or bad, and it is also possible to easily identify which solar panel 1 in the entire building has a problem. Furthermore, in this example, a portion of the various cables 5 to 7 that constitute the solar power generation system 3 can be accommodated in the cable housing section 29 of the mullions 11 and 11a, and the various cables can be arranged in the indoor space. Since there is no need to do this, it is advantageous in terms of securing a large indoor space.

Further, in this example, the connector connecting portion 52 of the intermediate connecting cable 6 and the connector connecting portions 52a and 52b of the end connecting cable 7 are housed in the cable accommodating portion 29. Therefore, the connection between the first connector 48 and the second connector 49 that constitute the connector connection parts 52, 52a, and 52b is released, and the test equipment is connected to the first connector 48 and the second connector 49 from the outdoor side. Can be connected. Therefore, it is possible to improve the efficiency of maintenance work for the solar cell panel 1. Moreover, compared to the case of using non-contact inspection equipment, inspection performance can be improved. Furthermore, the workability of wiring the intermediate connection cable 6 and the end connection cable 7 can also be improved.

Further, in this example, the intermediate connection cable 6 and the end connection cable 7 housed in the cable housing section 29 can be easily accessed by removing the lid section 28 from the mullion 11. Therefore, it is possible to improve the efficiency of maintenance work while ensuring the aesthetic appearance of the building 2.

[Second example of embodiment]
A second example of the embodiment will be described using FIGS. 20 and 21.

This example is a modification of the first example of the embodiment, and the structure of the solar cell panel 1a is changed from the structure of the first example of the embodiment.

The solar cell panel 1a includes only one solar cell module 46a. The solar cell module 46a is configured by connecting in series a plurality of solar cells arranged adjacent to each other in the vertical direction. The solar cell panel 1a includes one positive terminal portion 40 and one negative terminal portion 41 on the indoor surface of the panel body 39. The positive terminal portion 40 is arranged at an upper portion on one side in the left-right direction of the panel body 39, and the negative terminal portion 41 is arranged at a lower portion on one side in the left-right direction of the panel body 39.

Also in the case of this example, among the plurality of solar battery panels 1a belonging to the same solar battery group 10, two solar battery panels 1a arranged adjacent to each other in the left-right direction are connected to each other using the intermediate connection cable 6. are used to connect each other in series. Furthermore, among the plurality of solar battery panels 1a belonging to the same solar battery group 10, two solar battery panels 1a arranged vertically with the glass panel 13 in between are connected to each other using the end connection cable 7. are used to connect each other in series.

In the case of this example as described above, the positive terminal portion 40 and the negative terminal portion 41 can be arranged to be biased to one side in the left-right direction of the solar cell panel 1. Therefore, it is advantageous to use the space between the solar cell panel 1 and the inner wall material 56 for other purposes.
Other configurations and effects are the same as in the first example of the embodiment.

[Third example of embodiment]
A third example of the embodiment will be described using FIGS. 22 and 23.

This example is a modification of the first example of the embodiment, and the structure of the solar cell panel 1b is changed from the structure of the first example of the embodiment.

The solar cell panel 1b includes two solar cell modules 46. For this reason, the solar cell panel 1b includes two positive terminal portions 40 and two negative terminal portions 41 on the indoor surface of the panel body 39. The positive terminal portions 40 are arranged at the upper and lower portions of the other side of the panel body 39 in the left-right direction, and the negative terminal portions 41 are arranged at the upper portion of the panel body 39 on the other side in the left-right direction. and are arranged at the lower part.

In this example, among the two positive terminal parts 40 and two negative terminal parts 41 provided in the solar cell panel 1b, one set of the positive terminal part 40 and the negative terminal part 41 arranged diagonally By directly connecting the two solar cell modules 46, the two solar cell modules 46 are connected in series.

Also in the case of this example, among the plurality of solar battery panels 1b belonging to the same solar battery group 10, two solar battery panels 1b arranged adjacent to each other in the left-right direction are connected to each other by the intermediate connection cable 6. are used to connect each other in series. Also, among the plurality of solar battery panels 1b belonging to the same solar battery group 10, two solar battery panels 1b arranged vertically with the glass panel 13 in between are connected to each other using the end connection cable 7. are used to connect each other in series.

In the case of this example as described above, since one solar cell panel 1b is provided with two solar cell modules 46, the output per solar cell panel 1b can be increased.
Other configurations and effects are the same as in the first example of the embodiment.

[Fourth example of embodiment]
A fourth example of the embodiment will be described using FIGS. 24 and 25.

This example is a modification of the second example of the embodiment, and the structure of the solar cell panel 1c is changed from the structure of the second example of the embodiment.

The solar cell panel 1c includes two solar cell modules 46a. For this reason, the solar cell panel 1c includes two positive terminal portions 40 and two negative terminal portions 41 on the indoor surface of the panel body 39. The positive terminal portions 40 are arranged at upper portions on both left and right sides of the panel body 39, and the negative terminal portions 41 are arranged at lower portions on both left and right sides of the panel body 39. .

In this example, among the two positive terminal parts 40 and two negative terminal parts 41 provided in the solar cell panel 1c, one set of the positive terminal part 40 and the negative terminal part 41 arranged diagonally By directly connecting the two solar cell modules 46a, the two solar cell modules 46a are connected in series.

Also in the case of this example, among the plurality of solar battery panels 1c belonging to the same solar battery group 10, two solar battery panels 1c arranged adjacent to each other in the left-right direction are connected to each other using the intermediate connection cable 6. are used to connect each other in series. Furthermore, among the plurality of solar battery panels 1c belonging to the same solar battery group 10, two solar battery panels 1c arranged vertically with the glass panel 13 in between are connected to each other using the end connection cable 7. are used to connect each other in series.

Also in the case of this example as described above, the output per solar cell panel 1c can be increased similarly to the third example of the embodiment.
The other configurations and effects are the same as the first and second examples of the embodiment.

Although the embodiments of the present invention have been described above, the present invention is not limited thereto, and can be modified as appropriate without departing from the technical idea of the invention. Moreover, when implementing the present invention, the structures of each example of the embodiment can be combined as appropriate.

The wiring structure of a solar cell panel of the present invention is applicable not only to the solar cell panel forming the outer peripheral wall of a building, but also to the wiring structure of a solar cell panel forming the outer peripheral wall of other buildings. Further, when carrying out the present invention, the structure of the mullions corresponding to the vertical frames is not limited to the structure of the embodiment, and can be changed as appropriate. Further, when carrying out the present invention, the connection cable is not limited to a structure in which a plurality of cables are connected by a connector connection part, but can be constructed from a single cable. Furthermore, when the connection cable is composed of a plurality of cables, the number of cables is not limited to the number described in the embodiment, and can be changed as appropriate.

1, 1a, 1b, 1c solar panel 2 building 3 solar power generation system 4 curtain wall 5 output cable 6 intermediate connection cable 7 end connection cable 8 power conditioner 9 storage battery 10 solar cell group 11, 11a mullion 12 blind 13 Glass panel 14 Bracket 15 Frame 16 Mullet main body 17 Decorative material 18a, 18b PV ridges 19a, 19b Cover material 20 Square column part 21 Flat plate part 22 Connecting plate part 23 Bolt 24 Nut 25a, 25b Side plate part 26 Bottom plate part 27a, 27b Fin Part 28 Lid 29 Cable housing 30 Opening 31 Lid screws 32a, 32b Holding grooves 33a, 33b First through hole 34a, 34b Second through hole 35 Third through hole 36a, 36b Fourth through hole 37 Grommet 38 Glass plate 39 Panel body 40 Positive terminal portion 41 Negative terminal portion 42 Positive current collection cable 43 Negative current collection cable 44 Front plate 45 Back plate 46, 46a Solar cell module 47a, 47b Terminal box 48 First connector 49 No. 2 Connector 50 First intermediate connection cable 51 Second intermediate connection cable 52, 52a, 52b Connector connection part 53 First end connection cable 54 Second end connection cable 55 Relay cable 56 Inner wall material 57 Beam part 58a, 58b Notch 59 Closed main body 60a, 60b Ribbed edge 61a, 61b Holding groove 100 Solar panel 101 Building 102 Curtain wall 103 Floor slab 104 Bracket 105 Mulled 106 Closed 107 Glass panel 108 Panel main body 109 Terminal box 110 Inner wall material 111 Positive collection Power cable 112 Negative current collection cable 113 Output cable

Claims (9)

A wiring structure of a solar panel that constitutes the outer peripheral wall of a building,
The solar panel includes a panel body including a plurality of solar cells, and a positive terminal portion and a negative terminal arranged on an indoor surface of the panel body and electrically connected to the plurality of solar cells. and has a
Of the two solar cell panels arranged in a predetermined direction, the positive terminal portion provided on one of the solar cell panels and the negative terminal portion provided on the other solar cell panel. and are connected via a connection cable at least partially disposed on the outdoor side of the panel body,
Wiring structure of solar panel. The connection cable is made up of at least two cables connected via a connector connection part located on the outdoor side of the panel body.
A wiring structure for a solar cell panel according to claim 1. The predetermined direction is a left-right direction,
A vertical frame having an insertion portion is arranged between the two solar panels in the left and right direction,
The connection cable is disposed to be inserted into the insertion portion of the vertical frame,
A wiring structure for a solar cell panel according to claim 1. The predetermined direction is an up-down direction,
A glass panel is disposed between the two solar panels in the vertical direction, and a vertical frame having an insertion portion is disposed on one side of the two solar panels in the left-right direction. and
The connection cable is disposed to be inserted into the insertion portion of the vertical frame,
A wiring structure for a solar cell panel according to claim 1. The vertical frame has a cable accommodating part extending in the vertical direction on the outdoor side from the panel main body,
A part of the connection cable is housed in the cable housing part,
The wiring structure of a solar cell panel according to claim 3 or 4. The vertical frame has a vertical frame main body fixed to the frame, and a decorative material fixed to the outdoor side of the vertical frame main body,
The cable accommodating portion is provided in the decorative material.
The wiring structure of a solar cell panel according to claim 5. 6. The solar cell panel wiring structure according to claim 5, wherein the vertical frame has a lid part that can open and close an opening of the cable housing part. The solar cell panel further includes a positive current collection cable connected to the positive terminal portion, and a negative current collection cable connected to the negative terminal portion,
Both ends of the connection cable are connected to the positive current collection cable provided on the one solar cell panel and the negative current collection cable provided on the other solar cell panel, respectively. It is connected,
A wiring structure for a solar cell panel according to claim 1. A first connector is provided at the end of the positive current collection cable,
A second connector is provided at the end of the negative current collection cable,
Of both ends of the connection cable, one end connected to the positive current collection cable is provided with the second connector, and the other end connected to the negative current collection cable is provided with the second connector. The end portion is provided with the first connector.
The wiring structure of a solar cell panel according to claim 8.

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