JP2002289903A - Sunlight power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sunlight power generator which facilitate wiring work and also facilitates the system setting or change of a solar cell panel. SOLUTION: In this sunray power generator 11 which has a plurality of solar cell panels 14 and an cable assembly 15, leading to the interior of a house from each solar cell panel 14, each solar cell panel 14 has a system selector 23 for connecting the output to some system of the cable assembly 15. The aggregate cable 15 is equipped with a partial cable assembly 19 provided between the connectors of the solar cell panel 14, and the fellow connectors are connected with each other by arranging the solar cell panel 14, and the wiring of the cable assembly 15 is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photovoltaic power generator in which a plurality of solar cell panels are arranged.

[0002]

2. Description of the Related Art In recent years, in buildings such as houses, a solar power generation device or a solar water heater is installed on a roof in order to effectively utilize solar energy. In photovoltaic power generation, a predetermined output is secured by arranging a large number of solar cell panels incorporating solar cells. Each solar panel is connected in series to obtain the required power, and such a series connection is divided into several groups and taken indoors. The fetched wiring is converted and stabilized through an output control device and connected to a load (lighting, electric heater, electric motor, etc.). Conventionally, the solar power generation device 100 has a structure as shown in FIG. In FIG. 10, the terminals of the adjacent solar cell panels 110 which are installed on the roof surface are sequentially connected by inter-panel connection cables 102 to form a solar cell panel group. The positive terminal at one end of the solar cell panel group and the negative terminal of the solar cell panel 102 at the other end of the solar cell panel group.
The main cable 103 is connected to the terminal,
3 is connected to an indoor junction box 104. Further, the junction box 104 is connected to a load 106 via an output control device 105 (Japanese Patent Application Laid-Open No. 12-91617).

[0003]

In such a wiring structure, the terminals of each adjacent solar cell panel 110 are connected by an inter-panel connecting cable 102, and the + terminal at one end of the solar cell panel group is connected to the solar cell panel. In order to connect the main cable 103 to the negative terminal of the solar cell panel 102 at the other end of the group, a large number of connection work needs to be performed on the roof, and the wiring work is complicated. In addition, it is necessary to accurately connect a large number of wirings on the roof, and the work is also difficult in this respect, and the construction takes time. Furthermore, once wired, it was difficult to fix it later.

An object of the present invention is to provide a photovoltaic power generation device which simplifies wiring work and facilitates setting and changing the system of a solar cell panel.

[0005]

Therefore, the present invention employs the following structure to achieve the above object. The invention according to claim 1 will be described with reference to the accompanying drawings.
And a cable extending from each solar cell panel 14 to a room, wherein the cable is a collective cable 15 having a plurality of systems, and each of the solar cell panels 14 It is characterized by having a system selector 23 connected to any system of the cable 15.

According to the first aspect of the present invention, since the output of each of the solar cell panels 14 is connected to the collective cable 15, it is not necessary to connect the terminals of each of the solar cell panels 14 sequentially. Wiring work is not complicated, and workability is improved. Since the solar cell panel 14 has the system selection unit 23, it is not necessary to perform rewiring at the time of system change or correction, and can be easily performed.

According to a second aspect of the present invention, in the solar power generation device of the first aspect, the solar cell panel constitutes a part of the roof of the building. According to the second aspect of the present invention, since the photovoltaic panel 14 is installed on the roof 10 which receives the most sunlight, power can be generated by collecting a lot of light.

According to a third aspect of the present invention, in the photovoltaic power generator 11 according to the first or second aspect, the solar cell panels 14 have connectors 24 for connecting adjacent solar cell panels 14 at both ends. The collective cable 15 includes a partial collective cable 19 provided between the connectors 24.

According to the third aspect of the present invention, since the wiring of the collective cable 15 is completed by the connection of the connector 24, there is no need to perform a cable wiring operation on the roof 10 and a wiring error. Can be prevented and work efficiency can be improved.

According to a fourth aspect of the present invention, in the photovoltaic power generator 11 according to any one of the first to third aspects, the connector 24 is located at a position where the connector 24 is engaged with each other when the solar cell panel 14 is installed. It is characterized by being provided. According to the invention described in claim 4 of this configuration, the connectors 24 are provided at positions where they are engaged with each other with the solar cell panel 14. Is connected, so that no special connection work or connection means is required, and the work efficiency can be further improved.

According to a fifth aspect of the present invention, in the photovoltaic power generator 11 according to any one of the first to fourth aspects, the number of systems of the collective cable 15 is the same as the number of groups of the solar cell panel 14. There is a feature. According to the fifth aspect of the present invention, the collective cable 1
If 5 is connected to a junction box 16 provided in a place different from the panel arrangement place such as the back of a hut, switching for each group can be performed by the junction box 16 instead of on the roof or the like. The vertical / horizontal change of the group or the like is performed by the system selection unit 23.

According to a sixth aspect of the present invention, in the photovoltaic power generator 11 according to any one of the first to fifth aspects, the number of systems of the collective cable 15 is the same as the number of the solar cell panels 14. . According to the sixth aspect of the present invention, if the collective cable 15 is connected to a junction box 16 provided on the back of a shed or the like, all the solar cell panels 14 can be freely switched by the junction box 16. Since the vertical / horizontal change of the group and individual setting for each solar cell panel 14 can be performed in the junction box 16, work in a dangerous place such as on the roof 10 becomes unnecessary.

According to a seventh aspect of the present invention, in the photovoltaic power generator 11 according to any one of the first to sixth aspects, the system selection unit 23 is a switch that can be manually operated. According to the sixth aspect of the present invention, since the system selection unit 23 is a switch, it is possible to easily perform group setting, vertical / horizontal change, and the like of the solar cell panel 14.

BEST MODE FOR CARRYING OUT THE INVENTION

An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows an entire building 1 with a solar cell according to the present embodiment. The building 1 with a solar cell has a building body 30 constructed by stacking a plurality of building units 31 manufactured in advance at a factory on a foundation 40, and the gable roof 10 is constructed on the building body 30. is there. Although not shown, the building unit 31 is constructed by assembling construction materials such as flooring materials and wall materials into a substantially rectangular parallelepiped framework incorporating columns and beams.

The gable roof 10 has a roof base 12, and the photovoltaic power generator 1 disposed on the upper surface on the south side of the roof base 12
1 and a roof panel 13 arranged on the upper surface on the north side. The photovoltaic power generation device 11 converts sunlight into electric power and uses it. The photovoltaic power generation device 11 is used to form a plurality of flat-panel-shaped solar cell panels 14, and from the solar cell panels 14 to the inside of the building 1 with solar cells, for example, to the back of a hut 32. And a collective cable 15 connected to the provided junction box 16.

As shown in FIG. 2, each solar cell panel 14
Has a panel body 17 and a casing 18 attached to the lower surface of the panel body 17. The panel main body 17 includes a solar cell (not shown) for converting light into electric energy, and a frame 22 provided around the panel main body 17. In this solar cell, a plurality of solar cells composed of solar cells are arranged side by side on a light-transmitting supporting substrate such as glass and sealed with a resin or the like, and light transmitted through the supporting substrate is converted into electric energy. ing. The solar cell may be a polycrystalline silicon solar cell or a single-crystal silicon solar cell, or may be an amorphous silicon solar cell formed on a small insulating substrate. The solar cell is not limited to this structure, and an existing one may be appropriately used. For example, a solar cell in which a solar cell is sealed between a pair of glass substrates may be used.

As shown in FIG. 3, the casing 18 includes a rectangular flat plate portion 25 having substantially the same dimensions as the panel main body 17.
A frame 26 is provided on the upper surface of the flat plate portion 25 and protrudes from the upper surface. In the internal space of the frame 26, a system selection unit 23 and a connector 24 are provided. The connector 24 is for connecting the solar cell panels 14 adjacent to each other. This connector 24 is connected to the frame 2
6 has a male portion 241 provided at one end of the frame 26 and protruding outside the frame 26, and a female portion 242 provided at the other end of the frame 26 and immersed inside the frame 26. The part 241 and the female part 242 make a pair. The connector 24 is located at a position where the male part 241 of the adjacent solar cell panel 14 and the female part 242 of the solar cell panel 14 are engaged with each other when the plurality of solar cell panels 14 are aligned and installed, for example, each other of the frame 26. It is provided at the center of the opposite end. A partially assembled cable 19 is provided inside the frame 26 between the male portion 241 and the female portion 242. Therefore, as shown in FIG. 4, by connecting the connector 24, the plurality of partially assembled cables 19 are connected to each other, and a part of the assembled cable 15 is configured. This collective cable is connected to the junction box 16 and, as shown in FIG.
Is connected to the load 34 via the. In addition, the female part 2 of the casing 18 at the front end of the array of the solar cell panels 14 in the eaves direction.
A cap 243 is engaged with 42.

The system selection unit 23 is a switch system having a switching unit according to the number of the sub-set cables 19, and the system can be switched manually. When the switch is set to the number 1, the output of the solar cell is connected to the subset cable 19 of the system 1, and when the switch is set to the number 2, the output of the solar cell is connected to the subset cable 19 of the system 2. More specifically, as shown in FIG. 5, the system selection unit 23 includes two lead wires 29 connected to the + terminal 27 and the − terminal 28 of the solar cell, and all the systems of the subset cable 19. Is connected to one of the lead wires 20 connected to the respective terminals.

FIG. 6 shows an arrangement of the solar cell panels 14 in which the horizontal direction is one group. FIG. 7 is a schematic diagram when the arrangement of FIG. 6 is considered as a battery. As shown in FIGS. 6 and 7, the number of systems of the collective cable 15 is four, and the number of groups constituting the solar cell panel 14 is four, and the number of systems and the number of groups are the same. Group 4 for eaves
The ridge direction is group 1, for example, after snowfall in winter,
When it is desired to secure a predetermined voltage when snow remains on the solar panels 14 of the group 4 at the eaves, change to an arrangement in which the solar panels 14 vertically adjacent to each other as one group as shown in FIG. There is a need to. At this time, there is no need to perform rewiring, and switching can be performed by the system selection unit 23. Further, by switching with the system selection unit 23,
Depending on how the snow melts and how the sun hits, as shown in FIG.
Group 1 is a snow group, Groups 2, 3, 4, 5
It is also possible to set a daylight-response group.

If the number of systems of the collective cable 15 is set to 16 which is the same as the number of the solar cell panels 14, the vertical and horizontal changes of the group and the individual switching of the solar cell panels 14 can be performed by the junction box 16 instead of the system selecting section 23. It becomes possible.

Therefore, according to the present embodiment, since the output of each solar cell panel 14 is connected to the collective cable 15, it is not necessary to connect the terminals of each solar cell panel 14 sequentially, so that the wiring is complicated. Workability is improved. Since the solar cell panel 14 has the system selection unit 23, it is not necessary to rewire when changing or correcting the system, and maintenance is easy. Since the system selection unit 23 is a switch that can be operated by a human hand, the operation can be easily performed.

According to the present embodiment, the connector 24
When the solar cell panel 14 is installed, the male part 241 of the solar cell panel 14 and the female part 242 of the solar cell panel adjacent to both ends are provided at the center of the opposite end of the frame 26. The partially assembled cable 19 is provided between the female part 242 and the male part 241. Solar panel 14
Since the wiring is completed only by installing the cable, wiring mistakes can be prevented, and since there is no need to perform cable wiring work on the roof 10, the safety of workers can be ensured and work efficiency can be improved. The connector 2 is located at the center of the opposite end of the frame 26.
4, the partial assembly cable 19 between the connectors 24 is located at the center of the casing 18, and the weight of the entire solar cell panel 14 can be balanced. It will be easier.

Further, since the cap 243 is engaged with the female portion 242 of the casing 18 at the tip of the array of the solar cell panels 14 in the direction of the eaves, the partially assembled cable 19 is protected from rain, dust, etc., which may cause a failure. Protected. Moreover, since the photovoltaic power generation device 11 is disposed on the upper surface of the roof foundation 12 and also serves as a roof finishing material, a large amount of light can be secured without impairing the appearance of the roof.

Further, when the number of systems of the collective cable 15 and the number of groups constituting the solar cell panel 14 are the same, the switching for each group can be performed by the junction box 16. When snow is left on the solar panel 14 of the group 4 at the eaves in the case where the horizontal direction is one group as shown in FIGS. 6 and 7, the connection of the system of the group 4 is cut off by the junction box 16. be able to. There is no need to climb the roof, it is safe and easy to operate. When it is desired to secure a predetermined voltage even when snow remains at the eaves, the user goes up on the roof and changes the group length and width using the switch of the system selection unit 23, as shown in FIG. 8, and there is a decrease in current. However, a predetermined voltage can be secured. Furthermore, even if the cable of the system of group 1 fails, it is possible to change from group 1 to group 2 by the switch of the system selection unit 23, and it is possible to continue power generation without stopping the operation of the solar power generation device 11. .

If the number of systems of the collective cable 15 is the same as the number of the solar panels 14, the vertical and horizontal changes of the group and the individual switching of the solar panels 14 can be performed at the junction box. For example, the solar cell panel 14 in the state of FIG. 6 can be switched to the state of FIG. 8 by a junction box according to the remaining snow.
Further, the setting as shown in FIG. 9 can be made in accordance with how to hit sunlight and how to melt snow. Switching can be performed without work on the roof, making the work easy and safe.

The present invention is not limited to the above-described embodiment, but includes modifications and improvements as long as the object of the present invention can be achieved. For example,
In the above-described embodiment, the solar cell panel 14 is provided as a roof finishing material on the upper surface of the roof foundation 12, but the solar cell panel 14 is not limited to the upper surface of the roof foundation 12, and may be installed on a place exposed to sunlight, for example, a building wall or the like. , And the solar power generator 1 on the roof surface
1 may be placed separately. In addition, the southern roof base 12
Although the solar cell panel 14 is provided only on the upper surface of the device, it may be provided on the north side or both sides. Although the roof is the gable roof 10, it may be a flat roof. The number of systems of the collective cable 15 may be greater than or less than the number of the solar cell panels 14 and is arbitrary. Further, according to the present embodiment, when the solar cell panel 14 is installed, the connector 24 includes the male part 241 of the solar cell panel adjacent to both ends and the female part 24 of the solar cell panel.
2 are provided at the centers of the opposite ends of the frame 26, but it is sufficient if they are provided at positions where they can engage with each other.

[0027]

According to the first aspect of the present invention, since the output of each solar cell panel is connected to the collective cable, it is not necessary to sequentially connect the terminals of each panel, so that wiring is complicated. Workability is improved. Since the solar cell panel has the system selection unit, it is not necessary to rewire when changing or correcting the system, and it can be easily performed.

According to the second aspect of the present invention, since the photovoltaic cell panel is installed on the roof which receives the most sunlight, power can be generated by collecting a lot of light.

According to the third aspect of the present invention, since the solar cell panel has the connector and the partially assembled cable is provided between the connectors, the connection of the connector completes the wiring of the assembled cable. Therefore, there is no need to perform cable wiring work on the roof, wiring errors can be prevented, and work efficiency can be improved.

According to the fourth aspect of the present invention, the connectors are provided at positions where they are engaged with the solar cell panel, and the connectors are connected only by installing the solar cell panel on the roof. No special connection work or connection means is required, and the work efficiency can be further improved.

According to the fifth aspect of the present invention, since the number of systems of the collective cables is the same as the number of groups constituting the solar cell panel, the collective cables are provided at a place different from the panel arrangement place such as the back of a shed. If the connection is made to the junction box provided, the switching for each group can be performed at the junction box instead of on the roof or the like. Changing the vertical and horizontal directions of the group is performed by the system selection unit.

According to the sixth aspect of the present invention, since the number of systems of the collective cable is the same as the number of the solar cell panels,
By connecting the collective cable to the junction box provided on the back of the hut, all the solar panels can be switched freely with the junction box, changing the group length and width, setting individual solar panels, etc. Because it can be done in the junction box,
Work in dangerous places such as rooftops is not required.

According to the seventh aspect of the present invention, since the system selection section is a switch, it is possible to easily perform group setting, vertical / horizontal change, and the like of the solar cell panel.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a building body with a solar cell according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a solar power generation device according to one embodiment of the present invention.

FIG. 3 is a perspective view showing a casing according to an embodiment of the present invention.

FIG. 4 is a plan view showing a main part of the solar power generation device.

FIG. 5 is a plan view showing a main part of a solar cell panel according to one embodiment of the present invention.

FIG. 6 is a plan view showing an arrangement of the solar cell panels.

FIG. 7 is a plan view showing an arrangement of the solar cells according to the same embodiment.

FIG. 8 is a plan view showing an arrangement of a solar cell panel according to another embodiment.

FIG. 9 is a plan view showing an arrangement of a solar cell panel according to another embodiment.

FIG. 10 is a perspective view showing a conventional solar power generation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building with solar cell 10 Roof 11 Solar power generation device 14 Solar cell panel 15 Assembly cable 19 Partial assembly cable 23 System selection part 24 Connector

Claims (7)

[Claims] 1. A photovoltaic power generator having a plurality of solar panels installed in a building and a cable extending from each solar panel to a room, wherein the cable is a collective cable having a plurality of systems. The photovoltaic power generator, wherein each of the solar cell panels has a system selection unit for connecting each output to any system of the collective cable. 2. The photovoltaic power generator according to claim 1, wherein said solar cell panel forms a part of a roof of said building. 3. The photovoltaic power generator according to claim 1, wherein the solar cell panel has connectors at both ends for connecting adjacent solar cell panels, and the collective cable is provided between the connectors. A photovoltaic power generator comprising the provided partial cable set. 4. The photovoltaic power generator according to claim 1, wherein said connectors are provided at positions where they are engaged with each other when said solar cell panel is installed. Solar power generator. 5. The photovoltaic power generation device according to claim 1, wherein the number of system of said collective cable is the same as the number of groups constituting said photovoltaic panel. apparatus. 6. The photovoltaic power generation device according to claim 1, wherein the number of systems of said collective cables is equal to the number of said solar cell panels. 7. The photovoltaic power generator according to claim 1, wherein the system selection unit is a switch that can be manually operated.