JP2003303989A - Solar battery module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar battery module capable of maintaining a rated capacity, without being affected by a use environment at low costs in a simple configuration. <P>SOLUTION: A hollow tube connecting board 4 to be used for a solar battery module 1 is configured, by connecting the integrating a plurality of hollow tubes 5, whose member length is equal in parallel wherein their mutual side faces are brought into contact with each other. The hollow tubes 5 are configured by forming holes 11 in zigzag manner in plan view to communicate adjacent hollow parts 10. The back face of the hollow tube connecting board 4 is formed as a smooth face, and an upper face 4a is configured as a solar condensing face so that a top edge face 6 itself of the hollow tube 5 forming the upper face 4a can be molded like a condensing lens. A water supply pipe 12 is disposed on a pair of facing edge faces 4b and 4c of the hollow tube connecting board 4, and temperature control water is made to pass via the water supply pipe 9 to the hollow part 10 of the hollow tube 5 so that heat exchange can be carried out between the temperature control water and the solar battery part 2 protected by the hollow tube connecting board 4 and a sealing resin part 3 for temperature control. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell module capable of maintaining a rated capacity without being affected by the use environment.

[0002]

2. Description of the Related Art A solar cell module provided in a structure or the like is used, for example, as an exterior material for a building, which is installed on the upper surface of a roof that is susceptible to sunlight or formed integrally with a building material. . Under such an environment, the temperature change in the vicinity of the surface glass of the solar cell module is severe, and the temperature is 70 ° C. or higher in the summer due to solar heat and the internal resistance of the cell, and in the winter, it is frozen depending on the region. In such a situation, the solar cell module generally has a standard condition of 25
Not only is it designed so that the rated capacity can be obtained at ° C, but it does not have a temperature guarantee function, so it is used at low power with reduced capacity according to the outside temperature that changes depending on the region and season in consideration of safety. I often do it.

The conversion efficiency of the solar cell module is easily reduced due to the influence of the outside temperature. For example, when the solar cell module exceeds 65 ° C., the power reduction rate is 20%.
It is generally known to reduce by about%. In this way, if the solar cell module is attached to a building by itself, it is not possible to make full use of the original performance of the solar cell module.Therefore, in order to obtain electric power according to the rated capacity of the solar cell module, A cooling device is installed on the back side to maintain the standard temperature.

[0004]

However, the cooling device provided in the solar cell module not only increases the weight of the roof body, but also requires enormous costs for the device itself and the construction cost. Further, since the solar cell module is arranged on the back surface and is cooled through the holding base holding the solar cell module, there is a problem that the cooling efficiency is poor.

In view of the above circumstances, it is an object of the present invention to provide a solar cell module that has a low cost and a simple structure and can maintain the rated capacity without being affected by the operating environment.

[0006]

A solar cell module according to claim 1 comprises a glass substrate, a solar cell portion laid on the lower surface of the glass substrate, and a sealing resin portion for protecting the solar cell portion. In the solar cell module formed by the above, the glass substrate is integrated with a plurality of hollow tubes connected in parallel so that the side surfaces are in contact with each other, and the joint surface with the solar cell portion is formed into a smooth surface. The hollow pipe connecting plate is used, the water supply and drainage pipes are attached to the pair of facing end faces of the hollow pipe connecting plate, respectively, and both ends of the hollow pipe are covered to form the top end face. Is formed in the shape of a condenser lens, and a side surface near the end is provided with a hole that communicates between the hollow portions of the hollow tubes adjacent to each other. The hole is a plan view of the hollow tube connecting plate. It is characterized by being staggered.

The solar cell module according to claim 2 is
A Fresnel lens is used for the top surface of the medium space.

The solar cell module according to claim 3 is
A peripheral surface is formed on a top end surface of the middle space.

The solar cell module according to claim 4 is
In the hollow pipe continuous plate, a single hollow long pipe is used instead of a plurality of hollow pipes, and the hollow long pipes are always in contact with each other at their side surfaces so that U is extended at a predetermined distance. It is characterized in that it is bent into a letter shape and integrated, and the joint surface with the solar cell portion is formed into a smooth surface.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The solar cell module according to the present invention is suitable for obtaining a rated capacity without depending on the temperature change of the surrounding environment by using a hollow tube connecting plate having a temperature adjusting function on a glass substrate. It is intended to realize a solar cell module that can maintain the temperature.

As shown in FIG. 1, the solar cell module 1
Is composed of a hollow tube continuous plate 4 that functions as a glass substrate, a solar cell section 2, and a sealing resin section 3. The solar cell module 1 has a generally used single front plate structure (Superstrate structure), in which a hollow tube connecting plate 4 is arranged on the light receiving surface side, and the back surface of the hollow tube connecting plate 4 is arranged. The sealing resin portion 3 is provided in the interior of the solar cell, and the solar battery portion 2 including a plurality of solar battery cells is enclosed in the sealing resin portion 3. The sealing resin part 3 is used for the purpose of protecting the solar cell part 2 from the collision of moisture, dust, hail, small stones, wind pressure, etc., and the adhesiveness with the hollow tube continuous plate 4 And a transparent resin having high transparency.

Further, the hollow pipe connecting plate 4 is formed by integrally connecting a plurality of hollow pipes 5 having the same member length in parallel so that their side surfaces are in contact with each other and integrating them. .
The hollow tubes 5 constituting the hollow tube continuous plate 4 are made of a transparent member having sufficient strength to function as a glass substrate such as tempered glass and a transparent acrylic plate, and have one end 8 and The other end 9 is closed and the side surface 7
A hole 11 is provided near one end 8 or the other end 9 so that the hollow portions 10 of the adjacent hollow tubes 5 communicate with each other. The holes 11 are arranged in the order of the hollow tubes 5a arranged at the end of the hollow tube continuous plate 4 to the adjacent hollow tubes 5b and 5c in plan view of the hollow tube continuous plate 4, respectively. The side surfaces 7 near one end 8 and the side surfaces 7 near the other end 9 are alternately arranged to form a zigzag arrangement so that a meandering line is drawn by passing through the hollow portion 10. Has been.

Since the back surface of the hollow tube connecting plate 4 is a joint surface with the sealing resin portion 3, it is formed into a smooth surface, and the top surface 4a serves as a light collecting surface of the sun. Upper surface 4a
The top end surface 6 itself of the hollow tube 5 forming the is formed into a condenser lens shape. As for the shape, for example, as shown in FIG. 1, a Fresnel lens which is generally used as a focus lens of a camera or a field lens of a projector is attached to the top surface 6. Alternatively, as shown in FIG. 2, it is conceivable that the top end surface 6 is formed on the peripheral surface to have a light collecting function. The top end surface 6 of the hollow tube 5 is not limited to this,
Any shape may be used as long as it has a lens-like shape having a light collecting function or a light collecting function.

By the way, as shown in FIG. 1, on the exposed side surfaces of the hollow tubes 5a, 5d arranged at the outermost ends, the above-mentioned holes are formed in a pair of facing end surfaces 4b, 4c of the hollow tube connecting plate 4. 11
At the same time, the water supply / drainage pipes 12 are arranged in a staggered arrangement. The temperature-controlled water is passed through the water supply / drainage pipe 12 to the hollow portion 10 of the hollow pipe 5, so that the temperature-controlled water and the sun protected by the hollow-pipe connecting plate 4 and the sealing resin portion 3 are exposed. Heat is exchanged with the battery unit 2 to adjust the temperature.

Such a solar cell module 1 is shown in FIG.
As shown in, a frame 13 made of an aluminum material or the like is provided so as to surround the outer peripheral end face thereof, and a plurality of frames are connected in series from the ridge side 14a of the roof of the building 14 to the eaves side 14b, A plurality of solar cell modules 1 connected to each other are also arranged in the parallel direction. At this time, in the solar cell module 1, the end faces 4b and 4c of the hollow pipe connecting plate 4 provided with the water supply / drainage pipe 12 are respectively attached to the ridge side 14a and the eaves side 1
It is arranged so as to face 4b.

Further, in the plurality of solar cell modules 1 arranged in series, for example, the water supply / drain pipe 12b provided on the end surface 4c of the eaves side 14b of the solar cell module 1a arranged on the ridge side 14a is provided on the eaves side 14b. The hollow tube connecting plate 4 of each of the solar cell modules 1a and 1b is also inserted into the end surface 4b of the solar cell module 1b on the ridge side 14a.
Are connected by a water supply / drainage pipe 12b. The plurality of solar cell modules 1 arranged in series in this way are the most ridge-side 1
When the temperature adjusting water is supplied to the hollow portion 10 of the hollow tube connecting plate 4 from the water supply / drain pipe 12a provided on the end surface 4b of the solar cell module 1a arranged on the ridge side 14a of the solar cell module 1a, the temperature adjusting water is The battery modules 1a, 1b, 1c pass through the hollow pipe connecting plates 4 in order through the water supply / drainage pipes 12b, 12c, and are drained from the water supply / drainage pipe 12d.

For example, when the cooling water is used as the temperature adjusting water in a high temperature period such as summer, the cooling water and the hollow pipe connecting plate 4 are
And the heat of the solar cell part 2 protected by the sealing resin part 3 is heat-exchanged and the solar cell module 1 is cooled to a desired temperature. At this time, the temperature-adjusted water that has been heat-exchanged into hot drainage water can be used as a heat source directly or by a heat exchanger or the like. As described above, the solar cell module 1 supplies the temperature-adjusted water to the hollow tube continuous plate 4 while adjusting the temperature suitable for the environment, so that the temperature of the solar cell module 1 is always kept at an appropriate temperature. It is to keep warm. The temperature-adjusted water to be supplied is the same as that used in the conventional solar cell module cooling system, and the supply method is also the same as the conventional method such as pressure feeding by the pump 16.

The hollow tube connecting plate 4 of the solar cell module 1 as described above is not limited to the above-mentioned constitution,
As shown in FIG. 4, a plurality of hollow tubes 5 are attached to the hollow tube connecting plate 4.
Instead of one, one hollow long pipe 15 may be used. Like the hollow tube 5, the hollow long pipe 15 has a smooth lower surface and a light collecting function on the top end surface, and covers the entire surface of the encapsulating resin portion 3 that protects the solar cell portion 2. By repeating the configuration of bending in a U shape for each width that can be covered and joining adjacent side surfaces until a length that can cover the entire surface of the sealing resin portion 3 is reached,
The hollow tube continuous plate 4 is formed.

In this embodiment, as shown in FIGS. 1 to 4, the hollow tube connecting plate 4 is connected to the solar cell section 2
The hollow tube 5 and the hollow long pipe 15 are formed to be parallel to the sealing resin portion 3 that protects the resin in the width direction. The hollow tube continuous plate 4 may be formed by arranging in any direction, such as by arranging in a direction or an oblique direction.

Further, as shown in FIG. 3, the solar cell module 1 has a plurality of hollow tubes 5 with respect to the building 14 on the ridge side 1.
Although it was attached so as to be arranged in a direction orthogonal to the axis connecting 4a and the eaves side 14b, it is not particular about this, and it is located in parallel with the axis connecting the ridge side 14a and the eaves side 14b.
Alternatively, it may be arranged in any direction as long as it is arranged in a direction in which the efficiency of collecting sunlight can be improved, such as in an oblique direction.

Further, in the present embodiment, the solar cell module 1 is arranged so that the end surfaces 4b and 4c of the hollow pipe connecting plate 4 provided with the water supply and drainage pipe 12 face the ridge side 14a and the eaves side 14b, respectively. However, the temperature-adjusted water to be supplied does not stay in a part of the hollow portion 10 of the hollow pipe connecting plate 4 for a long time, and the hollow portion 1 is not limited to this.
It does not matter which mounting method is used as long as it can pass through the entire zero. Further, the solar cell module 1 is not only provided on the upper surface of the roof, but also the building 14
It may be installed at any place, such as being provided on the wall surface of.

According to the above-mentioned structure, since the solar cell module 1 has a structure in which the hollow tube connecting plate 4 functioning as a glass substrate is integrally provided with a temperature adjusting function, The solar cell module 1 can be cooled efficiently, and the power generation output reduction rate can be significantly suppressed in any usage environment, and the power that is always commensurate with the rated capacity can be obtained regardless of environmental changes such as regional characteristics and seasons. It becomes possible to enjoy.

In addition, when planning the installation of the solar cell module 1, it is not necessary to consider the loss due to the operating environment.
The degree of freedom in design can be increased.

Further, as compared with the conventional solar cell module 1 in which a cooling device is separately provided on the back surface, it is applied as a building material integrated solar module that has a slim appearance and good workability, and has high versatility and design. Is possible.

The temperature-adjusted water used for the hollow tube connecting plate 4 can be effectively used as a heat source directly or by a heat exchanger, and an environment-friendly structure in which resources can be circulated and used can be realized. Becomes

Since the upper surface 4a of the hollow tube connecting plate 4 is formed in the shape of a condenser lens, the condenser efficiency can be increased and the power generation efficiency can be improved with a simple structure.

[0027]

According to the solar cell module of claim 1, the solar cell module is formed of a glass substrate, a solar cell portion laid on the lower surface of the glass substrate, and a sealing resin portion for protecting the solar cell portion. In the solar cell module, the glass substrate is integrally formed with a plurality of hollow tubes connected in parallel so that their side surfaces are in contact with each other, and a joint surface with the solar cell portion is formed into a smooth surface. An empty pipe connecting plate is used, and a pair of opposing end faces of the hollow pipe connecting plate are respectively attached with water supply and drainage pipes, and the hollow pipe is
Both ends are covered and the top surface is formed into a condenser lens shape,
The side surface near the end is provided with holes for communicating the hollow portions of the hollow tubes adjacent to each other, and the holes are arranged in a staggered manner in a plan view of the hollow tube connecting plate, which is efficient. In addition to being able to cool the solar cell module, the power generation output reduction rate can be greatly suppressed in any usage environment, and always receive the power that matches the rated capacity, regardless of environmental changes such as regional characteristics and seasons. Will be possible.

In addition, since it is not necessary to consider the loss due to the use environment when planning the installation of the solar cell module, the degree of freedom in design can be increased.

Further, as compared with a conventional solar cell module in which a cooling device is separately provided on the back surface, it can be applied as a building material-integrated solar module that has a slim appearance and good workability, and has high versatility and design. It will be possible.

The temperature-adjusted water used for the hollow pipe connecting plate can be effectively used as a heat source directly or by a heat exchanger, and an environment-friendly structure in which resources can be circulated and used can be realized. Become.

According to the solar cell module of the second and third aspects, a Fresnel lens is used on the top end surface of the middle space. Alternatively, since the peripheral surface is formed on the top end surface of the middle space, it is possible to improve the light-collecting efficiency and the power generation efficiency with a simple configuration.

According to the solar cell module of claim 4, the hollow tube connecting plate is replaced with a plurality of hollow tubes,
One hollow long pipe is used, and the hollow long pipes are bent into a U-shape at predetermined intervals so that the side faces are always in contact with each other to be integrated, and the joint surface with the solar cell section is smoothed. Since it is molded on the surface, the solar cell module can be cooled efficiently with a simple structure, and the power generation output reduction rate can be significantly suppressed in any usage environment, depending on environmental changes such as regional characteristics and seasons. Without fail, it is possible to always enjoy the power commensurate with the rated capacity.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a solar cell module according to the present invention.

FIG. 2 is a diagram showing an example of a hollow exchange connecting plate of a solar cell module according to the present invention.

FIG. 3 is a diagram showing a mounting example of a solar cell module according to the present invention to a building.

FIG. 4 is a view showing another example of the hollow exchange connecting plate of the solar cell module according to the present invention.

[Explanation of symbols]

1 solar cell module 2 solar cell section 3 Sealing resin part 4 Hollow tube connection plate 4a upper surface 4b end face 4c end face 5 hollow tubes 5a hollow tube 5b hollow tube 5c hollow tube 5d hollow tube 6 crown 7 sides 8 One end face 9 The other end face 10 Hollow part 11 holes 12 water supply and drainage pipe 12a Water supply / drainage pipe 12b Water supply / drainage pipe 12c water supply and drainage pipe 12d water supply and drainage pipe 13 frame 14 buildings 14a building 14b eaves 15 Hollow long pipe 16 pumps

Claims (4)

[Claims] 1. A solar cell module comprising a glass substrate, a solar cell portion laid on a lower surface of the glass substrate, and a sealing resin portion for protecting the solar cell portion, the solar cell module comprising: Is a hollow tube connecting plate formed by integrating a plurality of hollow tubes connected in parallel so that the side surfaces are in contact with each other, and forming a joint surface with the solar cell portion into a smooth surface. Water supply and drainage pipes are respectively attached to a pair of opposing end faces of the empty pipe connecting plate, and both ends of the hollow pipe are covered, and a top end face is formed into a condenser lens shape, and a side face near the end portions. Is provided with a hole that communicates the hollow portions of the hollow short tubes that are adjacent to each other, and the holes are arranged in a staggered manner in a plan view of the hollow tube continuous plate. 2. The solar cell module according to claim 1, wherein a Fresnel lens is used on a top end surface of the hollow tube. 3. The solar cell module according to claim 1, wherein a peripheral surface is formed on a top end surface of the hollow tube. 4. The solar cell module according to claim 1, wherein the hollow tube continuous plate uses a single hollow long pipe instead of a plurality of hollow tubes. Make sure that the long pipes are always in contact with each other,
A solar cell module, wherein the solar cell module is bent at a predetermined distance into a U shape to be integrated, and a joint surface with the solar cell portion is formed into a smooth surface.