JPH08228017A - Solar cell device - Google Patents

Abstract

PURPOSE: To prevent the output of a solar cell panel from being reduced by the shadows of a frame body by a method wherein solar cell elements which are hidden in the paths of the shadows of the frame body, which are generated by shading incident light into the solder cell panel with the frame body, are formed as dummy elements. CONSTITUTION: A solar cell device is constituted of a solar cell panel 5, which uses solar cell elements 2 adhered to one surface of a light-transmitting substrate 1 as its main constituent element, and a frame body 6 for supporting the panel 5. In such a solar cell device, the solar cell elements which are hidden in the parts of the shadows of the frame body 6, which are generated by shading incident light into the panel 5 with the frame body 6, are formed as dummy elements 3. The dummy elements 3 have the same appearance as that of the elements 2, for example, and are made simultaneously with the elements 2 in a process for forming the elements 2. The elements 3 are formed into ones, which are electrically subjected to short-circuit treatment in an electrode formation process to the other elements 2, are omitted an electrode formation process to the elements 3 and do not perform a generating action even if being subjected to irradiation of light.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell device, and more particularly to a solar cell device in which the influence of the shadow of a frame used in the solar cell device is eliminated.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, a solar cell device has a transparent resin 1 on the back side of a transparent substrate 11 such as glass.
, A solar cell panel 14 on which solar cell elements 13, 13, ... Are arranged, and a frame body 15 made of aluminum or the like for fixing the periphery of the solar cell panel 14 to support the solar cell panel 14, 15 and the solar cell panel 14 generates power by receiving irradiation of sunlight.

[0003]

However, in general, solar cells are connected in series between solar cell elements so as to increase the output voltage and decrease the output current in order to increase the power generation efficiency. When the output of even one of the solar cell elements is reduced, the element becomes a resistance connected in series to the solar cell, and the output of the entire solar cell panel is reduced.

On the other hand, in the above-mentioned solar cell device, the solar cell panel is usually installed at an optimum angle so that sunlight can be incident on the entire panel surface. However, depending on the installation location of the solar cell device, it is optimal. It is difficult to set a proper angle. In this case, the light incident at a low angle is blocked by the frame, and the output of the solar cell element shaded by the frame decreases, and as a result, the output of the entire solar cell panel decreases.

Further, if the structure is such that the solar cell element is not attached to the position of the shadow of the frame body, there is a problem that the appearance is impaired.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a shaded portion of a frame body caused by a frame body blocking incident light on a solar cell panel. The solar cell element that enters is a dummy element.

[0007]

According to the present invention, since the solar cell element that enters the shaded portion of the frame is formed as a dummy element, even when the sunlight is incident on the solar cell panel at a low angle, the solar cell element is affected by the shadow. It is possible to prevent the output of the solar cell panel from decreasing.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail with reference to the drawings. 1 and 2 are a cross-sectional view and a plan view of a solar cell device of the present invention, in which 1 is a translucent substrate such as glass, 2,
Denoted by 2 are transparent solar cell elements provided on the back surface side of the transparent substrate 1, which are formed of amorphous silicon. The plurality of solar cell elements 2, 2, ...
Are connected in series so as to obtain a predetermined output power.
3, 3 are dummy elements having the same appearance as the solar cell elements 2, 2, .... Reference numeral 4 denotes a translucent resin, which is filled in order to prevent damage to the solar cell elements 2, 2, ... And prevent invasion of moisture from the outside, and to reinforce the strength of the solar cell elements. The transparent substrate 1, the solar cell element 2,
From the dummy elements 3 and 3 and the transparent resin 4,
The solar cell panel 5 is configured. Reference numerals 6 and 6 denote frame bodies that are fixed to the ends of the solar cell panel 5 and support the panel 5, and are made of aluminum or the like.

Now, the dummy elements 3 and 3 will be described in more detail.

The dummy elements 3, 3 have the same appearance as the solar cell elements 2, 2, ...
It is made at the same time in the process of forming the solar cell elements 2, 2, .... However, the dummy elements 3 and 3 are electrically short-circuited in the electrode forming step for the other solar cell elements 2, 2, ... It does not generate electricity even when exposed to.

When the dummy cell elements 3, 3 are provided with the solar cell elements 2, 2, ... Extending in the vertical direction as shown in FIG. It is located at the left and right ends of the shielded solar cell panel 5.

On the other hand, as shown in FIGS. 4 and 5, when the solar cell elements 2, 2, ... Are provided so as to extend in the horizontal direction, the dummy element 3 receives the incident light Y from the frame body. It is provided so as to be located at the uppermost end of the solar cell panel 5 which is shielded by 6.

Further, assuming that the width for arranging the dummy element 3 is a height A from the upper surface of the solar cell elements 2, 2, ... To the top of the frame body 6 as shown in FIG. That is, within 2 times. That is, the solar cell elements 2, 2,
By arranging the positions such that the positions are at least twice the height of the frame body, the shadow of the frame body 6 causes the solar cell element 2,
2, ...

In the solar cell device configured as described above, light usually reaches the solar cell elements 2, 2, ... The light that reaches the solar cell elements 2, 2, ... Generates electric power, and this light also reaches the dummy elements 3, 3.

However, when the incident angle of sunlight becomes a low angle, the influence of the shadow due to the frame 6 is caused by the dummy element 3,
, And the solar cell elements 2, 2, ... Can maintain the power generation efficiency and obtain the generated power.

[0016]

As is apparent from the above description, according to the present invention, the solar cell element that enters the shaded portion of the frame body caused by the light incident on the solar cell panel being blocked by the frame body is used as a dummy element. The influence of the shadow of the frame is eliminated, the output can be prevented from lowering, and the dummy element has the same appearance as the solar cell element, so that the appearance is not spoiled.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a solar cell device according to the present invention.

FIG. 2 is a plan view in which dummy elements of a solar cell device according to the present invention are located at both left and right ends of a solar cell panel.

FIG. 3 is a sectional view showing incident light X of the solar cell device according to the present invention.

FIG. 4 is a plan view in which a dummy element of the solar cell device according to the present invention is located at the uppermost end of the solar cell panel.

FIG. 5 is a cross-sectional view in which a dummy element of the solar cell device according to the present invention is located at the uppermost end of the solar cell panel.

FIG. 6 is a cross-sectional view showing a configuration in which dummy elements of a solar cell device according to the present invention are arranged.

FIG. 7 is a cross-sectional view showing a conventional solar cell device.

[Explanation of symbols]

 1 translucent substrate 2 solar cell element 3 dummy element 4 translucent resin 5 solar cell panel 6 frame

Claims (9)

[Claims] 1. A solar cell device comprising a solar cell panel having a solar cell element attached to one surface of a translucent substrate as a main constituent element, and a frame supporting the solar cell panel. The solar cell device is characterized in that a solar cell element that enters a shaded portion of the frame body generated when the light incident on the solar cell panel is blocked by the frame body is a dummy element. 2. The solar cell device according to claim 1, wherein the solar cell element extends in the horizontal direction, and the dummy element is located at the uppermost end of the solar cell panel. 3. The solar cell device according to claim 1, wherein the solar cell element extends in a vertical direction, and the dummy elements are located at both left and right ends of the solar cell panel. 4. The solar cell device according to claim 1, wherein the dummy element has the same appearance as a solar cell element. 5. The solar cell according to claim 1, wherein the dummy element is simultaneously formed in the step of forming a solar cell element and is short-circuited in the step of forming an electrode. Battery device. 6. The solar cell according to claim 1, wherein the dummy element is formed simultaneously with the step of forming the solar cell element, and the electrode forming step is omitted. apparatus. 7. The dummy element according to claim 1, wherein the width of the dummy element is set within twice the height of the frame body.
The solar cell device according to claim 2, claim 3, claim 4, claim 5, or claim 6. 8. The solar cell element is composed of an amorphous solar cell.
Claim 2, Claim 3, Claim 4, Claim 5, Claim 6,
Alternatively, the solar cell device according to claim 7. 9. The solar cell element comprises a light-transmissive solar cell composed of an amorphous material, claim 1, claim 2, claim 3, claim 4, claim 5,
The solar cell device according to claim 6, claim 7, or claim 8.