JP2003229590A - Solar battery module and solar battery unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar battery module and a solar battery unit which can be easily assembled to a frame with higher accuracy. <P>SOLUTION: An marginal region 21a where a silicon resin 26 is not coated is provided at the external circumference of a tempered white glass 21. Therefore, the longitudinal and transversal lengths and thickness of the external circumference of the glass 21 are set to the specified sizes of the tempered white glass 21 and fluctuation of such sizes is extremely small. Accordingly, a buffering material 27 and a frame 28 which are previously aligned to the specified sizes of the tempered white glass 21 can be assembled easily to each side of the tempered white glass 21 with higher accuracy. As a result, size accuracy of the solar battery module 11 can be improved. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a solar cell module and a solar cell unit for a house.

[0002]

2. Description of the Related Art In recent years, as one means for generating and using clean energy, solar cells that convert sunlight into electric energy have been drawing attention and spreading. In addition, solar cell modules are provided for home use. This solar cell module forms a solar cell unit by sealing a solar cell layer formed by connecting a plurality of solar cells to each other between a translucent substrate and a back film, and forming a solar cell unit on the outer peripheral edge of the solar cell unit. The frame body is fitted and attached, and a terminal box for taking out an output is provided on the back side of the solar cell unit. Usually, shipping, transportation, and construction are performed with this solar cell module as one unit.

[0003]

By the way, in the conventional solar cell unit, as shown in FIG.
1, a solar cell layer (not shown), a sealing resin film 102, a back film 103, etc. are laminated to have substantially the same size,
As shown in FIG. 11, for example, silicone resin 104 was applied to the end portion of the laminate to improve its waterproof performance. However, since it is extremely difficult to apply the silicone resin 104 uniformly, the thickness of the end portion of the solar cell unit becomes uneven. Therefore, the frame body cannot be fitted into the end of the solar cell unit, or even if it is fitted, an error occurs in the mounting position of the frame body,
The frame body was deformed, which caused a dimensional error in the solar cell module. Then, this invention is made | formed in view of the said conventional problem, and an object of this invention is to provide the solar cell module and solar cell unit which can attach a frame easily and highly accurately.

[0004]

In order to solve the above-mentioned problems, the solar cell module of the present invention comprises a solar cell, a solar cell, and a seal on the translucent substrate in a range excluding the vicinity of the outer peripheral edge of the translucent substrate. A solar cell unit in which at least a stop resin film and a back film are laminated, and a solar cell, a sealing resin film, and a sealing resin that seals the ends of the back film are applied, and a sealing resin. And a frame body attached to the outer peripheral edge of the translucent substrate to which is not applied. According to the present invention having such a configuration, the solar cell, the sealing resin film, and the back film are not laminated in the vicinity of the outer peripheral edge of the transparent substrate of the solar cell unit, and the sealing resin is not applied. . Then, a frame is attached to the outer peripheral edge of the translucent substrate on which the sealing resin is not applied. The translucent substrate is, for example, a glass plate and has a specified dimension. Therefore, unless a sealing resin or the like is applied to the outer peripheral edge of the translucent substrate, the outer peripheral edge of the translucent substrate is The frame can be easily and highly accurately attached to the. Further, in the present invention, a cushioning material is interposed between the outer peripheral edge of the transparent substrate and the frame body. A glass plate is often applied as the translucent substrate. Since the edge of the glass plate is easily chipped, a cushioning material is interposed between the outer peripheral edge of the transparent substrate and the frame body, and the outer peripheral edge of the transparent substrate is closely contacted with the cushioning material to protect it.
The outer peripheral edge of the transparent substrate is prevented from being chipped due to impact or the like. Further, in the present invention, the cushioning material is continuously provided between the outer peripheral edge of the translucent substrate and the frame body.
This makes it possible to protect the entire outer peripheral edge of the transparent substrate. Further, in the present invention, the cushioning material is dispersedly provided at a plurality of positions between the outer peripheral edge of the transparent substrate and the frame body. As a result, the amount of cushioning material used can be reduced. Further, in the present invention, the back film has translucency. Alternatively, the sealing resin has translucency. When the solar cell module is used by fitting it into a window or other sash, if a translucent resin is used as the back film or sealing resin, the amount of light that passes through the solar cell module will increase and Lighting is possible. On the other hand, the solar cell unit of the present invention, in the range excluding the vicinity of the outer peripheral edge of the transparent substrate, on the transparent substrate,
At least the solar cell, the sealing resin film, and the back film are laminated, and the sealing resin that seals the end portions of the laminated solar cell, the sealing resin film, and the back film is applied. According to the present invention having such a configuration, the solar cell, the sealing resin film, and the back film are not laminated in the vicinity of the outer peripheral edge of the transparent substrate of the solar cell unit,
Moreover, since the sealing resin is not applied, the frame body can be easily and highly accurately attached to the outer peripheral edge of the transparent substrate.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a first embodiment of a solar cell module of the present invention. Further, FIG. 2 is a perspective view showing the solar cell module of the present embodiment as viewed from the back surface side. As shown in FIGS. 1 and 2,
In the solar cell module 11 of the present embodiment, a frame 13 is fitted and attached to the outer peripheral edge of the solar cell unit 12, and a terminal box 14 for taking out the output is provided on the back surface of the solar cell unit 12. Next, referring to FIG. 3 to FIG. 7, the solar cell module 1 of the present embodiment
The manufacturing process of No. 1 will be described. First, as shown in FIG. 3, a first encapsulating ethylene vinyl acetate (EVA) layer 22, a plurality of solar cells 23a arranged in a matrix on a tempered white glass plate 21, and a solar cell layer 23, 2 After sequentially laminating the ethylene vinyl acetate (EVA) layer 24 for sealing and the back film 25, the first EVA layer 22 for sealing is applied between the tempered white glass sheet 21 and the solar cell layer 23 by performing heat treatment. The solar cell layer 23 and the back film 25 are bonded to each other by the second sealing EVA layer 24. Here, the length and width of the tempered white sheet glass 21 is set to 1
Set to 000mm x 800mm and the first sealing EV
A layer 22, a solar cell layer 23, a second sealing EVA layer 24,
And the length and width of the back film 25 is 900 mm x 7
The size is set to 00 mm or smaller.
Therefore, as shown in FIG. 4, a region where the first sealing EVA layer 22, the solar cell layer 23, the second sealing EVA layer 24, and the back film 25 do not exist is formed on the outer peripheral edge of the tempered white sheet glass 21. It is formed. Next, as shown in FIG. 5, the first sealing EVA layer 22, the solar cell layer 23, and the second sealing EVA layer 2
4 and the end portion of the laminate composed of the back film 25,
Silicone resin 26 is applied for waterproofing to form solar cell unit 12. At this time, tempered white sheet glass 2
A blank area 21a, on which the silicone resin 26 is not applied, is provided on the outer peripheral edge of 1. Subsequently, as shown in FIGS. 6 and 7, the entire periphery of each edge of the tempered white sheet glass 21 is continuously covered with a cushioning material 27 made of synthetic resin, and a metal frame 28 is provided on the entire surface thereof. It is fitted and protects the edge of the tempered white sheet glass 21 to prevent its chipping. With the above, the solar cell module 11 is completed. As described above, in this embodiment, the glass 21 itself is exposed in the blank area 21a of the tempered white sheet glass 21. Therefore, the vertical and horizontal lengths and thicknesses of the outer peripheral edge of the glass 21 are the specified dimensions of the tempered white sheet glass 21, and their variations are extremely small. Therefore, the cushioning material 27 and the frame body 28, which are preliminarily aligned with the prescribed size of the strengthened white sheet glass 21, can be easily and highly accurately attached to each side of the strengthened white sheet glass 21. As a result, the dimensional accuracy of the solar cell module 11 is improved. The present invention is not limited to the above embodiment, but can be modified in various ways. For example, as shown in FIG. 8, a plurality of cushioning materials 27A may be dispersed and fitted to the outer peripheral edge of the tempered white sheet glass 21, and a metal frame 28 may be fitted thereon. As a result, the amount of cushioning material used can be reduced. In addition, as shown in FIG. 9, a transparent back film 2
5A and transparent silicone resin 26A may be applied. Thereby, each solar battery cell 2 of the solar battery layer 23
Light is transmitted through the gap 3a and the periphery of the solar cell layer 23. For example, when the solar cell module 11 is used by being fitted into a sash such as a window, the solar cell module 11
The amount of light transmitted through the window increases, and it becomes possible to collect light from the window. Furthermore, the frame 28 of the solar cell module 11 may also be used as a window sash.

[0006]

As described above, according to the present invention, the solar cell, the sealing resin film, and the back film are not laminated in the vicinity of the outer peripheral edge of the transparent substrate of the solar cell unit,
Moreover, the sealing resin is not applied. Then, a frame is attached to the outer peripheral edge of the translucent substrate on which the sealing resin is not applied. The translucent substrate is, for example, a glass plate and has a specified dimension. Therefore, unless a sealing resin or the like is applied to the outer peripheral edge of the translucent substrate, the outer peripheral edge of the translucent substrate is The frame can be easily and highly accurately attached to the.
Further, according to the present invention, a glass plate is usually applied as the translucent substrate, and since the edge of the glass plate is easily chipped, a buffer material is provided between the outer peripheral edge of the translucent substrate and the frame body. The outer peripheral edge of the translucent substrate is closely contacted with the cushioning material to protect it so as to prevent the outer peripheral edge of the translucent substrate from being chipped due to impact or the like. Further, according to the present invention, the cushioning material is continuously provided over the entire outer peripheral edge of the transparent substrate and the frame body to protect the entire outer peripheral edge of the transparent substrate. Further, according to the present invention, the cushioning material is dispersedly provided at a plurality of positions between the outer peripheral edge of the translucent substrate and the frame body to reduce the usage amount of the cushioning material. Furthermore,
According to the present invention, a transparent film is used as the back film, and a transparent resin is used as the sealing resin to increase the amount of light transmitted through the solar cell module. As a result, even if the solar cell module is attached to the window, it is possible to illuminate through the window.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a solar cell module of the present invention.

FIG. 2 is a perspective view showing the solar cell module of the present embodiment as viewed from the back surface side.

FIG. 3 is an exploded perspective view showing a solar cell unit in the solar cell module of the present embodiment.

FIG. 4 is a perspective view showing the vicinity of the outer peripheral edge of the tempered white sheet glass of the solar cell unit of FIG.

5 is a perspective view showing a state in which the solar cell layer of the solar cell unit of FIG. 3 and the end portions of the back film and the like are sealed with a silicone resin.

6 is a perspective view showing a cushioning material and a frame body fitted to the outer peripheral edge of the reinforced white sheet glass of the solar cell unit of FIG.

7 is a perspective view showing a state in which a cushioning material and a frame are fitted to the outer peripheral edge of the reinforced white sheet glass of the solar cell unit of FIG.

FIG. 8 is a perspective view showing a modified example of the cushioning material fitted to the outer peripheral edge of the reinforced white sheet glass of the solar cell unit.

FIG. 9 is a perspective view showing a modified example of the solar cell unit.

FIG. 10 is a perspective view showing the vicinity of the outer peripheral edge of a tempered white sheet glass of a conventional solar cell unit.

11 is a perspective view showing a state where the solar cell layer of the solar cell unit of FIG. 10 and the end portions of the back film and the like are sealed with a silicone resin.

[Explanation of symbols]

11 Solar Cell Module 12 Solar Cell Unit 13 Frame 14 Terminal Box 21 Reinforced White Plate Glass 22 First Sealing Ethylene Vinyl Acetate (EVA)
Layer 23 Solar cell layer 24 Second sealing ethylene vinyl acetate (EVA)
Layer 25 Back film 26 Silicone resin 27 Buffer material 28 Frame

Claims (7)

[Claims] 1. A solar cell, a sealing resin film, and a back film are laminated at least on the transparent substrate in a range excluding the vicinity of the outer peripheral edge of the transparent substrate, and the laminated solar cell. A sealing resin film, and a solar cell unit coated with a sealing resin for sealing the end portion of the back film, and a frame body attached to the outer peripheral edge of the translucent substrate on which the sealing resin is not coated. A solar cell module. 2. The solar cell module according to claim 1, wherein a cushioning material is interposed between the outer peripheral edge of the translucent substrate and the frame body. 3. The buffer material is continuously provided over the entire outer peripheral edge of the translucent substrate and the frame body.
The solar cell module described in 1. 4. The solar cell module according to claim 2, wherein the cushioning material is dispersedly provided at a plurality of positions between the outer peripheral edge of the transparent substrate and the frame body. 5. The solar cell module according to claim 1, wherein the back film has a light-transmitting property. 6. The solar cell module according to claim 1, wherein the sealing resin has a light-transmitting property. 7. A solar cell, a sealing resin film, and a back film are laminated at least on the transparent substrate in a range excluding the vicinity of the outer peripheral edge of the transparent substrate, and the laminated solar cell. A solar cell unit, wherein a sealing resin film and a sealing resin for sealing the end portion of the back film are applied.