JPH0328523Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a solar cell unit that is assembled as a large-capacity solar cell by being attached to a wall of a building, etc., while configuring electrical wiring.

Solar cells are installed on the roofs, walls, etc. of structures such as lighthouses on uninhabited islands, and are widely used as a power source to cover part or all of the electricity used there.

By the way, in conventional solar cells, an output cord for extracting electrical energy obtained by converting light energy is led out on the back side. When attaching such a conventional solar cell to a wall of a building, the installation work must be performed while wiring work including the output cord, and the work is complicated. Further, since the wiring work is performed on the back side of the solar cell, the solar cell cannot be closely attached to the wall of the building, and therefore a sturdy mounting member is required to be interposed between the wall and the solar cell.

This idea was made in view of the above circumstances,
An object of the present invention is to provide a unit type solar cell that can be directly attached to the wall surface of a building, and can also configure electrical wiring at the same time as the installation work.

This invention will be described in detail below with reference to the drawings.

Fig. 1 shows an example of the solar cell unit of this invention.
This is a solar cell unit with a size of approximately 10 mm and a thickness of 10 mm.

This solar cell unit 1 has a solar cell main body 3 attached to the surface of a plate-shaped unit substrate 2, two male contacts 4, 4 on one side of the opposing sides 2a, 2a, and two female contacts 5 on the other side. , 5 are attached. One pair of these contacts 4, 4, 5, 5 is an output male contact 4 from which the electromotive force of the solar cell main body 3 is output.
a, output female contact 5a, and the remaining pair are:
A transmission male contact 4b and a transmission female contact 5b send input from one contact to the other contact.

The unit substrate 2 is a plate-shaped one made of reinforced plastic such as FRP, ceramics, or the like. Slits 2b, 2b are formed along the length of the side surface of the unit substrate 2 in the vertical direction in FIG. 1, other than the side surfaces 2a, 2a. In addition, there is a slit 2 on the back side of the unit board 2.
A unit locking dovetail groove 2c is formed in the same direction as b.

The solar cell main body 3 attached to this unit substrate 2 is a substrate 3 made of smooth stainless steel or the like.
A cell 3b made of amorphous silicon that converts light energy into electrical energy is formed on the plate surface of a. This substrate 3a has both ends in the length direction bent into a U-shaped cross section, and its end edge is connected to the slit 2b of the unit substrate 2,
The solar cell main body 1 is integrally attached to the unit board 2 by being inserted and locked into the unit board 2b.

The positive and negative electrodes of the solar cell main body 1 are connected to an output male contact 4a and an output female contact 5 provided on the side surfaces 2a and 2a of the unit substrate 2 at the upper side in FIG.
electrically connected to a. The output male contact 4a is provided protruding from the side surface 2b, and the output female contact 5a is provided recessed from the side surface 2b. These shapes are designed to fit into each other,
In this example, the output male contact 4a is rod-shaped, and the output female contact 5a has a hollow portion in the shape of a rectangular parallelepiped.

In addition, the positions where these are provided are as follows when the sides of the two solar cell units 1, 1 are brought together.
In the solar cell unit 1 of this example, the unit substrates 2 parallel to the side surface 2b are positioned so that they fit into each other.
The positions are symmetrical to each other with respect to the center plane.

Further, the transmission male contact 4b and the transmission female contact 5b provided at the lower part of the side surfaces 2a, 2a in FIG. 1 have the same shape as the output contacts 4a, 5a, and The attached position, like the output contacts 4a and 5a, is symmetrical with respect to the center plane of the unit substrate 2, which is parallel to the side surface 2b of the solar cell unit 1. The transmission male contact 4a and the transmission female contact 5a are electrically connected by a transmission conductor 6. The transmission conductor 6 is made of an insulated wire or the like, and is buried in a through hole in the substrate 2.

A spacer 7 is fitted onto the rod-shaped male contacts 4, 4. This spacer 7 is a hollow columnar body, and the hollow portion has a shape corresponding to the outer shape of the male contact 4. The length of the spacer 7 in the axial direction of the hollow portion is the width of the gap (joint) between the solar cell units 1 when they are installed.

The one shown in FIG. 2 shows another example of the solar cell unit of this invention, and the same components as those of the solar cell unit 1 of FIG. 1 are given the same numbers and their explanations will be omitted.

The solar cell unit 8 of this example has two sides on one side 2b of the unit substrate 2.
Male contacts 4, 4 are provided. These male contacts 4, 4 are connected to the positive and negative electrodes of the solar cell main body 3, and are connected to the output male contacts 4.
a, 4a. The positions where these output male contacts 4a and 4a are provided are the same positions as the output male contacts 4a and the transmission male contacts 4b in the solar cell unit 1.

Next, how to use these solar cell units 1 and 8 will be explained. In the following explanation,
Solar cell unit 1 will be referred to as unit A, and solar cell unit 8 will be referred to as unit B.

First, the female contacts 5, 5 of the first unit A
Then, insert the male contacts 4, 4 of the second unit A and repeat this in sequence. Finally, insert the male contacts 4, 4 of unit B into the female contacts 5, 5 of unit A at the end. When units A and B are assembled in this manner, the solar cells are connected in series, and their electromotive force is output from the male contacts 4, 4 of unit A at the end.

To assemble units A and B in parallel, for example, connection unit C shown in FIG. 3 is used.

Connection unit C (hereinafter abbreviated as unit C)
consists of blocks 9 of the same size as unit A. Side surface 9a of this block 9 (third
(left side in the figure), female contacts 5, 5, which are the same as unit A, are male contacts 4, 4 of unit A.
It is located at a position corresponding to Two connection male contacts 10, 1 are provided on side surfaces 9b, 9b of the block 9, which intersect at right angles with the side surface 9a.
0, two connection female contacts 1 on the other side 9b
1 and 11 are provided. Connection male contact 1
0 and the connecting female contact 11 are shaped to be joined to each other, and their mounting position is on the side surface 10b.
The position is symmetrical with respect to the center plane of the block 9, which is parallel to the block 9. These contacts 5, 5, 1
0, 10, 11, and 11 are connected by connecting conductive wires 12 and 12, and two pairs of combinations consisting of a female contact 5, a connecting male contact 10, and a connecting female contact 11 are formed.

Units A and B can be freely assembled in parallel or series by using such unit C, and a power source having desired voltage and current can be obtained. What is shown in FIG. 4 is an example of a large capacity solar cell assembled using units A, B, and C. To assemble this large-capacity solar cell, first insert the connecting male contacts 10, 10 of the second unit C into the connecting female contacts 11, 11 of the first unit C, and repeat this process one after another. After assembling unit C..., male contacts 4, 4 of unit A are inserted into female contacts 5, 5... of these side surfaces 9a.... Thereafter, units A and B are connected as described above.

Connections of such contacts are made in units A,
This is done while attaching B and C to the wall of a building, etc. Units A, B, and C are installed using a general tile pasting method such as improved pressure bonding. Figure 5 shows units A, B, and C installed on the wall.
is pasted to the finished mortar surface 14 of the concrete wall of the building by means of adhesive-containing mortar 13.

In units A, B, and C having such a structure, electrical connection between units A and B is completed by inserting the male contact 4 into the female contact 5. Further, since the contacts 4 and 5 are provided on the side surfaces, the contacts 4 and 5 can be attached to the wall of a building or the like at the same time as being connected. Moreover, the construction method used at that time may be a general tiling construction method. Therefore, by using these units A, B, and C, large-capacity solar cells can be easily assembled and attached to the walls of buildings, etc. Furthermore, since units A, B, and C can be directly attached to a wall surface, etc., there is no need for a mounting member that intervenes between the solar cell and the wall surface as in the past. This means that it can also serve as a wall building material that forms the exterior wall surface of the building.

Furthermore, in the case of large-capacity solar cells attached to the walls of buildings, it is unavoidable that there will be areas where light does not enter due to shadows, fallen leaves, and the like. If there is a unit A or B that is unable to generate electricity due to no light being incident, power will not be supplied from the units A or B that are connected in series with that unit A or B. However, since the electrical wiring of units A and B can be freely configured in series or parallel by using unit C, electrical wiring can be configured by combining series and parallel wiring, as in the large capacity solar cell shown in Figure 4. If you do this, even in such a case, power will be supplied from the other units A, B, etc. connected in parallel to unit C, and there will be no problem with the power supply, making it possible to use large-capacity solar cells for practical purposes. becomes.

In the above explanation, two male contacts 4, 4 are attached to the side surface 2a of the substrate 2 of unit A.
Alternatively, although two female contacts 5, 5 are provided, the contacts provided on each side surface 2a may be integrated into a multi-pole connector.

As explained above, in the solar cell unit of this invention, the solar cell body is attached to the surface of a plate-shaped unit substrate, and contacts electrically connected to the electrodes of this solar cell body are provided on the side surface of the unit substrate. Because it is a solar cell, it can be directly attached to the wall of a building, and the electrical wiring can be completed at the same time as the installation work. It becomes suitable.

Furthermore, since both ends of the solar cell main body can be locked and fixed in the slits provided on the side surface of the unit board, it is possible to easily attach and remove the solar cell main body to and from the unit board.

Furthermore, since the locking groove formed on the back surface of the unit board can be locked to a building or the like, the unit board can be securely and firmly fixed to the building.

Furthermore, by connecting a plurality of electrical connections between the electrodes of the solar cell main body and the contacts with appropriate changes, a solar cell having a desired voltage and current can be provided.

[Brief explanation of the drawing]

Figures 1 and 2 are perspective views showing an example of the solar cell unit of this invention, Figure 3 is a perspective view of a connecting block, and Figure 4 shows the solar cell unit assembled into a large-capacity solar cell. The plan view and FIG. 5 are cross-sectional views showing the solar cell unit attached to the wall of a building. 1, A...Solar cell unit (unit), 2...
Unit board, 3... Solar cell body, 4a... Output male contact, 5a... Output female contact, 8, B...
Body photovoltaic unit (unit).

Claims (1)

[Scope of utility model registration request] A slit 2b is formed along the longitudinal direction on a pair of side surfaces 2a of a plate-shaped unit substrate 2, and a locking groove 2c is formed on the back surface of the unit substrate 2 along substantially the same direction as the slit 2b. A solar cell main body 3 having both longitudinal ends bent into a U-shaped cross section is attached to the surface of the unit substrate 2 with both ends engaged with the slits 2b of the unit substrate 2, A solar cell unit characterized in that a contact electrically connected to an electrode of the solar cell body is provided on a side surface of a unit substrate.