JP2002168062A - Solar battery module and window structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar battery module which enhances electricity generating efficiency thereof, and has a daylighting function, and to provide a window structure using the solar battery module. SOLUTION: In the solar battery module, double-faced power generating solar battery element rows 2a, 2a, etc., are arranged in a plane with translucent portions 21, 21, etc., therebetween, and solar battery element rows 2b, 2b, etc., are arranged in a plane with translucent portions 22, 22, etc., therebeween. Then, the solar battery element rows 2a are superposed on the translucent portions 22, and the solar battery element rows 2b on the translucent portions 21, respectively. Further, a frame body 5 has a rotation shaft 5a, and therefore the frame body is set in a window frame 6 in a manner being swayable about the rotation shaft 5a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a solar cell module having a lighting function and a window structure.

[0002]

2. Description of the Related Art A solar cell module having a lighting function is used as a window material or a skylight material. FIG. 8 is a longitudinal sectional view showing a configuration of a conventional solar cell module having a lighting function.

[0003] In the figure, reference numeral 20 denotes a solar cell element, and several to several tens of the solar cell elements 20, 20, ... are separated by light-transmitting parts 23, 23, ... for transmitting sunlight. Are arranged. The area of the light transmitting portions 23, 23,... The solar cell elements 20 and 2
0,... Can be connected to a terminal box for extracting power generated by the solar cell elements 20, 20,.
They are connected in series or in parallel using the wiring 7.

[0004] The connected solar cell elements 20, 20,
Are sandwiched by a light-transmitting synthetic resin 3 (for example, an EVA resin sheet), and the outside of the light-transmitting plate 1 made of a light-transmitting tempered glass material is used as a power-generating side. The synthetic resin 3 is cross-linked, cured and integrated by sandwiching it with a light-transmitting film 4 using a film, and the peripheral portions of the light-transmitting plate 1 and the light-transmitting film 4 are framed using aluminum. Into a solar cell module.

When the above-described solar cell module is used as a window material, the light-transmitting plate 1 is used in a vertical position facing the sun rays 8. At this time, the solar cell elements 20, 20,... Use the sunlight 8 for power generation and cut off the light. However, the light transmitting plate 1 and the light transmitting film 4 transmit the sunlight 8 with almost no attenuation. Lighting from the units 23, 23,... Becomes possible.

[0006]

However, the conventional solar cell module having the daylighting function has a light-transmitting portion 23,
.. Are provided, the ratio of the area of the solar cell elements 20, 20,... To the area of the solar cell module is limited, and the power generation efficiency is low.

The present invention has been made in order to solve such a problem, and uses a double-sided power generation type solar cell element, and a plurality of the above-mentioned solar cell elements are separated from each other by a light-transmitting portion that transmits sunlight. Between a first solar cell element group, which is arranged in a static manner, and a second solar cell element group, in which a plurality of solar cell elements, at least one surface of which contributes to power generation, are arranged in a plane with a light transmitting portion therebetween. The power generation efficiency is improved by alternately arranging the solar cell elements of the first solar cell element group and the solar cell elements of the second solar cell element group at appropriate intervals with the power generation sides facing each other. In addition, it is another object of the present invention to provide a solar cell module in which sunlight passing through the light transmitting portion contributes to lighting.

[0008] Another object of the present invention is to make the area of the light transmitting portion of the first solar cell element group larger than that of the second solar cell element group, It is an object of the present invention to provide a solar cell module capable of increasing the amount of collected light by providing the area of the portion larger than the area of the solar cell elements of the first solar cell element group. Another object of the present invention is to provide a solar cell module having an excellent heat insulating property and a lighting function by providing a light-transmitting heat-insulating layer between the first solar cell element group and the second solar cell element group. Is to provide.

Another object of the present invention is to provide a window structure capable of improving the power generation efficiency and adjusting the amount of light by adjusting the angular relationship with the sunlight by installing the solar cell module in a swingable manner. The purpose is to provide. Another object of the present invention is to provide a window structure capable of adjusting the positional relationship between the solar cell element groups and the solar cell element group by installing two groups of solar cell element groups in a sliding door shape. The purpose is to provide.

[0010]

The solar cell module according to the first invention comprises a plurality of double-sided power generation solar cell elements.
A first solar cell element group, which is arranged planarly with a light-transmitting part therebetween, and a plurality of solar cell elements, at least one surface of which contributes to power generation, are planarly arranged with a light-transmitting part therebetween. 2 solar cell element group, wherein the solar cell element of the first solar cell element group overlaps the light transmitting part of the second solar cell element group, and the light transmitting part of the first solar cell element group is the second solar cell element. It is characterized in that it is disposed at an appropriate distance so as to overlap the power generation side of the solar cell element of the cell element group.

The solar cell module according to the second invention is characterized in that the area of the solar cell element is smaller than the area of the light transmitting part. A solar cell module according to a third invention is characterized in that a light-transmitting heat-insulating layer is interposed between the first solar cell element group and the second solar cell element group. A window structure according to a fourth invention is characterized in that the solar cell module according to any one of claims 1 to 3 is installed so as to be swingable.

[0012] The window structure according to a fifth aspect of the present invention is a solar cell element group in which a plurality of double-sided power generation type solar cell elements are arranged in a plane with a light-transmitting portion interposed therebetween. Using a solar cell element group that is a solar cell element that contributes to power generation on one side, the power-generating side of the two groups of solar cell elements is directed to the same surface side, and the solar cell element of one of the solar cell element groups is It is characterized in that the two groups of solar cell elements are arranged in a sliding door shape at a position corresponding to the light transmitting portion of the other solar cell element group.

In the first invention, when the first solar cell element group side is directed to sunlight, a part of the incident solar light is incident on the surface of the solar cell element of the first solar cell element group. The remaining part of the solar light passes through the light transmitting part of the first solar cell element group and is incident on the surface of the solar cell element of the second solar cell element group, contributing to power generation, and contributing to electric power generation. Part of the sunlight reflected on the surface of the solar cell element of the cell element group is the first
A part of the solar light incident on the back surface of the solar cell element group and contributing to power generation and reflected by the back surface of the solar cell element of the first solar cell element group is partially transmitted by the light transmitting portion of the second solar cell element group. And a part of the sunlight passing through the light-transmitting portion of the first solar cell element group is transmitted through the light-transmitting part of the second solar cell element group, thereby contributing to the collection of indirect light. By contributing to lighting, the power generation efficiency can be improved and a lighting function can be provided.

When a double-sided power generation type solar cell element is used as a window material for the second solar cell element group, light from the indoor side is incident on the back surface of the second solar cell element group and contributes to power generation. Thus, power generation efficiency can be improved.

In the second invention, the area of the light transmitting portion of the first solar cell element group is larger than the area of the solar cell element of the second solar cell element group, and the area of the light transmitting section of the second solar cell element group is larger. Since the light-transmitting portion of the first solar cell element group overlaps with the light-transmitting portion of the second solar cell element group when the area is larger than the area of the solar cell element of the first solar cell element group, The amount of light collected increases. In the third invention, it can be used as a window material having excellent heat insulating properties.

According to the fourth aspect, it can be used as a window which can be opened and closed by swinging, and by adjusting the angular relationship between the first solar cell element group and the second solar cell element group and the sunlight. In addition, the power generation efficiency can be improved and the amount of collected light can be adjusted. According to the fifth aspect, the window can be used as a window that can be opened and closed by relative movement, and the positional relationship between the solar cell element and the light transmitting portion can be adjusted, so that the amount of light can be adjusted.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings showing the embodiments. Embodiment 1. FIG. 1 is a plan view showing a configuration of a solar cell module according to Embodiment 1 of the present invention, and FIG.
FIG. 2 is a sectional view taken along line II-II of FIG.

In the figure, reference numeral 2 denotes a rectangular double-sided power generation type solar cell element (for example, a HIT solar cell element), in which several to several tens of solar cell elements 2, 2,. Are arranged in a row to form solar cell element rows 2a, 2a,..., And a plurality of solar cell element rows 2a, 2a,. Solar cell element group 20a
Become Similarly, the solar cell elements 2, 2,...
b, 2b,..., and a plurality of solar cell element rows 2b, 2b,.
Are arranged side by side in a plane with an interval to be the light-transmitting portions 22, 22,.
0b.

.. And the light transmitting portions 22, 2
The vertical lengths of the 2,...
.. and the length of the solar cell element rows 2a, 2a,.

The solar cell element group 20a and the solar cell element group 20b use a light-transmitting plate 1 using a rectangular light-transmitting tempered glass material and a transparent plastic film having the same shape and the same area as the light-transmitting plate 1. The light-transmitting portions 21, 21,... And the light-transmitting portions 21, 21,. Are formed of the synthetic resin 3 between the solar cell element row 2a and the solar cell element row 2a and between the solar cell element row 2b and the solar cell element row 2b, respectively. The peripheral edges of the plate 1 and the translucent film 4 are fitted into a frame 5 made of aluminum.

At this time, the solar cell element group 20a and the solar cell element group 20b are stacked at a distance longer than the thickness of the solar cell element 2 with the synthetic resin 3 interposed therebetween, and the solar cell element rows 2a, 2a,. Overlap with the light transmitting parts 22, 22,.
The light-transmitting portions 21, 21,... Are formed of the solar cell element rows 2b, 2b,.
Are arranged alternately so as to overlap.

The distance between the photovoltaic cell group 20a and the photovoltaic cell group 20b is determined in consideration of the thickness of the photovoltaic module, the relationship between the amount of power generation, and the amount of light collected. When the distance is reduced, the solar cell module becomes thinner, but transmits through the light transmitting portions 21, 21,.
The amount of the sunlight 8 passing through decreases, the amount of direct light decreases, and the light is reflected on the front surface of the solar cell element rows 2b, 2b,. , The amount of sunlight 8 incident on the solar cell element array 2a, 2a,...
The amount of sunlight 8 passing through 2,... Decreases, and the amount of indirect light collected decreases.

The solar cell elements 2, 2,...
Are connected in series or in parallel using a connection plate (for example, a copper plate lead wire solder-plated on a copper plate), and are connected to a terminal box 9 for taking out the electric power generated by the solar cell elements 2, 2,. It is connected. The frame body 5 is provided with rotating shafts 5a, 5a protruding in the lateral direction on one side in the longitudinal direction on both lateral sides in the lateral direction. In addition, on the side of the light transmitting film 4 near the other end, there is provided a tilt angle holding rod 5c that projects toward the indoor side when used as a window material.

When the above-described solar cell module is used as a window material, the light transmitting plate 1 is fitted into the window frame 6 with the rotating shaft 5a facing upward, facing the sun rays 8, and the window frame 6 in the lateral direction. The rotary shafts 5a, 5a are inserted into bearings (not shown) provided near the upper end of the inner surface, and are used so as to be swingable (openable and closable). Near the lower end of the horizontal inner surface of the window frame 6, an inclination angle adjusting unit 6c is provided.
c has several hole-shaped stoppers, adjusts and holds the tilt angle of the solar cell module by inserting one end of the tilt angle holding rod 5c into the stopper, and supports the solar cell module.

At this time, the solar cell element arrays 2a, 2a,.
The surface of the light-transmitting plate 1 and the light-transmitting film 4 transmit the solar light 8 with almost no attenuation, so that the solar light 8 is transmitted through the light-transmitting portions 21, 21,. A part of the light beam 8 is divided into the solar cell element rows 2b, 2b,.
, And contributes to power generation, and the remainder of the solar rays 8 is reflected on the surface of the solar cell element rows 2b, 2b,... And is incident on the back faces of the solar cell element rows 2a, 2a,. To contribute, the solar cell module can improve power generation efficiency.

Also, part of the sunlight 8 reflected between the front surface of the solar cell element arrays 2b, 2b,... And the back surface of the solar cell element arrays 2a, 2a,. When the sunlight 8 is obliquely incident, the part of the sunlight 8 that has passed through the light-transmitting portions 21, 21, passes through the direct light-transmitting portions 22, 22,. As a result, the solar cell module can effectively use the daylighting function.

Further, conventionally, there is a solar cell module in which a solar cell element is provided with a space for preventing contact between the solar cell elements in order to prevent the solar cell elements from coming into contact with each other and causing a short circuit. . The solar cell module of the present invention,
The distance is separated between the solar cell element row 2a and the solar cell element row 2b, and between the solar cell element row 2a and the solar cell element row 2a or between the solar cell element row 2b and the solar cell element row 2b. .. Or the light-transmitting portions 22,
.. Exist, there is no need to provide a conventional contact preventing interval. Therefore, the ratio of the area of the solar cell element to the area of the solar cell module increases, and the power generation efficiency improves.

Further, the solar cell module is connected to a rotating shaft 5
By swinging about a and 5a as axes, it is possible to adjust the angle to obtain the optimum amount of collected light, power generation, and the like in accordance with the solar altitude. For example, by adjusting the light transmitting portions 22, 22,... So as to be covered by the shadows of the solar cell element rows 2a, 2a,. The daylighting function can be provided without reducing the amount of power generated by daylighting. Or, the light transmitting section 2
By adjusting the sunlight 8 to be incident on 2, 22,..., Direct light can be collected. Moreover, since the solar cell element rows 2b, 2b,... Overlap the translucent portions 21, 21,.

It is to be noted that the rotary shaft 5a may be mounted so as to be swingable (openable and closable) about the vertical axis. At this time, the solar cell element rows 2a, 2a,... And the solar cell element rows 2b, 2b,. Such a solar cell module,
For example, when used as a window material on the east side of a house, the sunlight 8
It is possible to easily adjust the amount of power generation and the amount of light to be collected in accordance with the angle of incidence. Moreover, the solar cell element rows 2a, 2a,.
, And the solar cell element arrays 2b, 2b,... Can generate electric power even with indoor light, but the solar cell element arrays 2b, 2b,. At this time, the solar cell element rows 2b, 2b,... Are arranged with the power-generating side facing the solar cell element rows 2a, 2a,.

Also, the light transmitting portions 21, 21,...
The length in the vertical direction of 2, 22,...
.. and the solar cell element rows 2a, 2a,. In this case, the amount of direct light passing through the light transmitting sections 21, 21,... And the light transmitting sections 22, 22,.

Embodiment 2 FIG. 3 is a plan view showing a configuration of a solar cell module according to Embodiment 2 of the present invention,
FIG. 4 is a sectional view taken along line IV-IV in FIG.

In the figure, reference numeral 2 denotes a rectangular double-sided power generation type solar cell element (for example, a HIT solar cell element) in which several to several tens of solar cell elements 2, 2,. Are arranged in a row to form solar cell element rows 2a, 2a,..., And a plurality of solar cell element rows 2a, 2a,. Solar cell element group 20a
Become The solar cell element group 20a is formed by using a translucent synthetic resin 3 between a rectangular translucent plate 1 and a translucent film 4 having the same shape and the same area as the translucent plate 1. Are formed of the synthetic resin 3 between the solar cell element rows 2a.

Similarly, the solar cell elements 2, 2,...
b, 2b,..., and a plurality of solar cell element rows 2b, 2b,.
Are arranged side by side in a plane with an interval to be the light-transmitting portions 22, 22,.
0b, and is laminated between the light transmitting plate 1 and the light transmitting film 4 using the synthetic resin 3. The light transmitting parts 22, 22,.
It is formed of the synthetic resin 3 between the solar cell element rows 2b. Transparent parts 21, 21, ...
, And the lengths of the light-transmitting portions 22, 22,... In the vertical direction are respectively equal to the solar cell element rows 2b, 2b,.
are provided to be longer than the vertical length of a,.

The frame body 5 made of aluminum is formed so that the peripheral portions of the light transmitting plate 1 and the light transmitting film 4 of the solar cell element group 20a or the solar cell element group 20b are joined to the solar cell element group 20a and the solar cell element group 20b. With appropriate distances between them. The solar cell module includes the solar cell element groups 20a and 20b, and the solar cell element groups 20a and 20b.
. 0b face each other, the solar cell element rows 2a, 2a,... And the light transmitting sections 22, 22,... Overlap, and the solar cell element rows 2b, 2b,.
Are fitted in the frame body 5 so as to be overlapped. At this time, the air is sealed between the respective translucent films 4 of the solar cell element groups 20a and 20b to form the heat insulating layer 51.

The solar cell element rows 2a, 2a,... And the solar cell element rows 2b, 2b,. Are connected to terminal boxes 9 for taking out the electric power generated by the solar cell elements 2, 2,. When the above-described solar cell module is used as a window material, the solar cell element group 20a is used with the solar cell element group 20a facing the sunlight 8. At this time, the solar cell module can improve the power generation efficiency and effectively use the daylighting function as in the first embodiment.

The light transmitting portions 21, 21,...
Are superposed on the solar cell element rows 2b, 2b,... And the solar cell element rows 2a, 2a,.
Since the light transmitting portions 21 and 22 are vertically larger than the solar cell element rows 2b and 2a, respectively, the light transmitting sections 21, 21,... Overlap the light transmitting sections 22, 22,. ,
For this reason, the amount of collected direct light is increased, and the outside can be seen through from the indoor side. In addition, the solar cell module has excellent heat insulating properties due to the heat insulating effect of the heat insulating layer 51, and also has excellent sound insulating properties.

When the distance between the solar cell element group 20a and the solar cell element group 20b is increased, the thickness of the solar cell module is increased, but the solar cell module is transmitted through the light transmitting sections 21, 21,. , 22,..., The amount of sunlight 8 that passes through the solar cell element rows 2b, 2 increases.
b,... are reflected on the surfaces of the solar cell element arrays 2a, 2a,.
, The amount of sunlight 8 incident on the back surface of the solar cell 8 increases, the amount of power generation increases, and the amount of sunlight 8 reflected by the back surface of the solar cell element rows 2a, 2a,. As the amount increases, the amount of indirect light collected increases. Further, since the amount of air sealed by the heat insulating layer 51 increases, the heat insulating effect and the sound insulating effect also increase. The solar cell module may be used as a window for fitting and fitting, or may be used as a window that can be opened and closed by swinging as in the first embodiment.

Embodiment 3 FIG. 5 is a plan view showing a configuration of a window structure according to Embodiment 3 of the present invention, and FIG.
FIG. 7 is a sectional view taken along line VI-VI of FIG. 5, and FIG. 7 is a sectional view taken along line VII-VII of FIG.

In the second embodiment described above, the solar cell element groups 20a, 20a sandwiched between the light transmitting plate 1 and the light transmitting film 4
b is installed in the frame 5 and fixedly integrated. In the window structure of the third embodiment, the solar cell element group 20a and the solar cell element group 20b are fitted into the frame body 50, respectively, Attach each to 6 in the form of a sliding door. Wheel portions 5b, 5b,... For assisting reciprocating movement on the rail portions 6b, 6b are provided at both ends in the vertical direction of each frame 50.
0a or a plurality of solar cell elements 20b are attached in consideration of the weight, friction, and the like.

The window frame 6 is provided with two sets of rails 6b, 6b for movably mounting the frame 50 on both inner surfaces in the vertical direction and at an appropriate distance in the depth direction. Rail part 6
.. are provided at the same length as the inner width of the window frame 6 in the horizontal direction.

The solar cell module includes a solar cell element group 2
0a so that the light transmitting film 4a and the light transmitting plate 1 of the solar cell element group 20b face each other.
, b,..., the wheel portions 5b, 5b,.
And the wheels 5b, 5b,... Of the solar cell element group 20b. In addition, the same parts as those in the second embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The window structure as described above is used for the solar cell element group 2
0a with the light-transmitting plate 1 facing the sunlight 8 and the solar cell element group 20a or the solar cell element group 2 in the same manner as the sliding door-shaped window.
0b is appropriately moved and used.

The window structure can be opened and closed like a sliding door.
When the window is closed, the solar rays 8 are applied to the solar cell element rows 2a and 2a.
.. and the surface of the solar cell element rows 2b, 2b,. At this time, the solar cell element group 20a
And the solar cell element group 20b do not overlap each other,
The solar rays 8 that have passed through 1, 21,.
b, 2b,..., and the solar cell element rows 2a, 2a,. Can increase the amount of light collected. When the window is opened, the solar cell element group 20a and the solar cell element group 20a
b, the solar cell element row 2a overlaps the light transmitting part 22 and the solar cell element row 2b overlaps the light transmitting part 21, so that the solar cell module has the same power generation efficiency as in the second embodiment. Can be provided with a lighting function.

[0044]

According to the solar cell module of the present invention,
A first solar cell element group in which a plurality of the solar cell elements are arranged in a plane with a light-transmitting portion that transmits sunlight, using a double-sided power generation type solar cell element, and at least one surface contributes to power generation The first solar cell is separated from the second solar cell element group in which a plurality of solar cell elements to be formed are arranged in a plane with the light-transmitting portion therebetween, with the power generation side facing each other at an appropriate interval. By alternately arranging the solar cell elements of the element group and the solar cell elements of the second solar cell element group, when the first solar cell element group side is directed to the sunlight, a part of the incident sunlight is The solar cell element of the first solar cell element group is incident on the surface of the solar cell element group of the first solar cell element group and contributes to power generation, and the remainder of the sunlight passes through the light transmitting part of the first solar cell element group. Incident on the surface of the solar cell to contribute to power generation, Part of the sunlight reflected on the front surface of the element is incident on the back surface of the solar cell element of the first solar cell element group to contribute to power generation, and reflected by the back surface of the solar cell element of the first solar cell element group. A part of the solar light transmitted through the light transmitting portion of the second solar cell element group contributes to the indirect light collection, and a part of the solar light transmitted through the light transmitting part of the first solar cell element group becomes the second light.
The light-transmitting portion of the solar cell element group can be transmitted to contribute to the lighting of the direct light, thereby improving the power generation efficiency and providing a lighting function.

When a double-sided power generation type solar cell element is used as the window material also for the second solar cell element group, light from the indoor side enters the back surface of the second solar cell element group and contributes to power generation. Thus, power generation efficiency can be improved. Further, the area of the light transmitting portion of the first solar cell element group is larger than the area of the solar cell element of the second solar cell element group, and the area of the light transmitting section of the second solar cell element group is set to be equal to that of the first solar cell element group. By providing the area larger than the area of the solar cell element, the light-transmitting part of the first solar cell element group and the light-transmitting part of the second solar cell element group overlap with each other, so that the amount of direct light collected increases. In addition, by providing a light-transmitting heat-insulating layer between the first solar cell element group and the second solar cell element group, it can be used as a window material having excellent heat insulating properties.

Further, according to the window structure of the present invention, by oscillatingly installing the solar cell module, it can be used as a window which can be opened and closed by oscillating. By adjusting the angular relationship between the second solar cell element group and the sunlight, the power generation efficiency can be improved, and the amount of light can be adjusted. Furthermore, according to the window structure of the present invention, by installing the two groups of solar cell elements in a sliding door shape, they can be used as windows that can be opened and closed by relatively moving, and the solar cell element and the light transmitting portion The present invention has excellent effects, for example, the positional relationship can be adjusted and the amount of light can be adjusted.

[Brief description of the drawings]

FIG. 1 is a plan view showing a configuration of a solar cell module according to Embodiment 1 of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a plan view showing a configuration of a solar cell module according to Embodiment 2 of the present invention.

FIG. 4 is a sectional view taken along line IV-IV of FIG.

FIG. 5 is a plan view showing a configuration of a window structure according to Embodiment 3 of the present invention.

FIG. 6 is a sectional view taken along line VI-VI of FIG. 5;

FIG. 7 is a sectional view taken along line VII-VII of FIG. 5;

FIG. 8 is a longitudinal sectional view showing a configuration of a conventional solar cell module having a lighting function.

[Explanation of symbols]

 Reference Signs List 2 solar cell element 2a solar cell element row 21 translucent section 2b solar cell element row 22 translucent section 20a solar cell element group 20b solar cell element group 5a rotating shaft 5b wheel section 51 heat insulating layer 6b rail section

Claims (5)

[Claims] 1. A plurality of double-sided power generation solar cell elements,
A first solar cell element group, which is arranged planarly with a light-transmitting part therebetween, and a plurality of solar cell elements, at least one surface of which contributes to power generation, are planarly arranged with a light-transmitting part therebetween. 2 solar cell element group, wherein the solar cell element of the first solar cell element group overlaps the light transmitting part of the second solar cell element group, and the light transmitting part of the first solar cell element group is the second solar cell element. A solar cell module, wherein the solar cell module is arranged at an appropriate distance so as to overlap a power generation side of a solar cell element of a group of cell elements. 2. The solar cell module according to claim 1, wherein an area of the solar cell element is smaller than an area of the light transmitting part. 3. The solar cell according to claim 1, wherein a light-transmitting heat-insulating layer is interposed between the first solar cell element group and the second solar cell element group. Battery module. 4. A window structure wherein the solar cell module according to claim 1 is swingably installed. 5. A plurality of double-sided power generation solar cell elements,
Two groups of solar cells using a solar cell element group arranged in a plane with a light transmitting portion therebetween and a solar cell element group in which the solar cell elements are solar cell elements at least one side of which contributes to power generation With the power generation side of the element group facing the same surface side, the solar cell element of one of the solar cell element groups is laid at a position corresponding to the light transmitting portion of the other solar cell element group, and A window structure in which solar cell elements are arranged in a sliding door shape.