JP2005294454A - Solar cell module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar cell panel having an excellent load resistance, dust-proofness and gas resistance. <P>SOLUTION: A groove 12 is provided in an upper inner wall of a frame body 11 made of aluminum, and the solar cell panel 18 obtained by laminating a glass plate, a resin plate, a solar battery cell, a resin plate and a fluorine film is fitted thereinto. Provided on a back face of the solar cell panel 18 is a terminal box 19 for obtaining electricity generated by the solar battery cell. An interior of the frame body 11 is a hollow space S surrounded by the frame body 11, the solar cell panel 18, and a back side panel 24. After a concentrate solution is poured from an injection hole, the concentrate solution is heated and foamed to fill a foamy composite resin 25 in the hollow space S. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a solar cell module to which a solar cell panel that generates power by sunlight is attached.

  2. Description of the Related Art In recent years, solar power generation that generates power using sunlight has been attracting attention as part of eco-energy and environmental measures. Generally, this solar power generation is a system in which a plurality of solar cells made of single crystal, polycrystal, amorphous silicon, etc. are arranged on a substrate, and electrodes, wirings, etc. are arranged to obtain power from the solar cell module. A plurality of solar cell modules are arranged in parallel according to the place and installation area.

  FIG. 5 shows a cross-sectional view of a conventional solar cell module, which is held by a solar cell panel 2 in which glass, a resin plate, a solar cell, a resin plate, and a fluororesin film are sequentially laminated on an aluminum frame 1. Has been. The solar cell panel 2 is connected with a cable to an electrode (not shown), and is connected to another solar cell panel via the cable or charges the battery with electric power generated by the solar cell panel 2.

  In general, however, solar panels are not always installed in good conditions, and are often used in harsh outdoor environments. However, it is necessary to meet various requirements such as heat resistance, corrosion gas resistance, and water resistance. In addition, in use on the surface of water in, for example, a water purification plant, a sewage treatment plant, etc., it is necessary to cope with moisture and the like rising from the surface of the water, and the required characteristics are becoming increasingly severe.

  The conventional solar cell panel shown in FIG. 5 has several problems as described below. First of all, the solar cell panel 2 is supported by the frame 1, but the lower surface is a hollow space, so if a large load is applied to the solar cell panel 2 due to snow or the like, the strength is insufficient and breaks. Sometimes.

  Secondly, the resin plate and the fluororesin film protecting the solar battery cell from the back surface are easily eroded by the reactive gas, water, and moisture that have entered the frame body 1, and the solar battery panel 2 itself is damaged. As a result, the performance of the solar cell is deteriorated or a failure is caused.

  Thirdly, dust or the like enters from the gaps in the frame 1 and the dust or the like tends to accumulate in the hollow space in the frame 1. It can also be a cause.

  The objective of this invention is providing the solar cell panel which solved the above-mentioned subject and improved load bearing property, dustproof property, water resistance, and corrosion gas resistance.

  In order to achieve the above object, a solar cell panel according to the present invention has a frame attached around a solar cell panel in which a plurality of solar cells are arranged on a substrate, and the solar cell panel on the back side of the solar cell panel. A terminal box for connecting an electric wire to the terminal box, the surface side of the frame body is surrounded by a back side panel except for the terminal box on the back side by the solar cell panel, and the terminal box on the back side of the solar cell panel A sealed space excluding the portion is formed, and the sealed space is filled with a foamable synthetic resin.

  According to the solar cell panel of the present invention, since the hollow space on the back surface of the module is sealed with the synthetic resin foam material, load resistance is improved, and damage can be prevented even when a large load is applied due to snow or the like.

  In addition, the sealing property is improved by the foamable synthetic resin, the invasion of reactive gas, dust, water, and moisture is prevented, and the durability is improved.

  Furthermore, by using a foamable synthetic resin, the total specific gravity becomes 1 or less, and it does not sink even if it falls into water.

The present invention will be described based on the embodiment shown in FIGS.
1 is a perspective view as seen from the front surface of the solar cell panel of the present embodiment, FIG. 2 is a perspective view as seen from the back surface, FIG. 3 is a cross-sectional view along AA, and FIG. 4 is an enlarged cross-sectional view of the solar cell panel. ing. A groove 12 is provided along the upper inner periphery of a rectangular frame 11 made of metal or a synthetic resin material, and includes a glass plate 13, a resin plate 14, and a plurality of solar cells 15 arranged in a plane. A solar cell panel 18 in which a resin plate 16 and a fluororesin film 17 are laminated is fitted. The groove 12 is filled with, for example, butyl rubber, and seals between the frame 11 and the solar cell panel 18. The size of one solar cell panel 18 is, for example, 1580 mm × 802 mm.

  On the back surface of the solar battery panel 18, a terminal box 19 for taking out the electricity generated by the solar battery cell 15 is provided outside, and an electric wire 20 is drawn into the terminal box 19 via a connector 21. The terminal box 19 is provided with a lid 22 for sealing the inside of the terminal box 19, and the lid 22 is provided with a grommet 23 made of synthetic rubber for inserting the electric wire 20 in a liquid-tight manner. .

  Further, a back side panel 24 having a shape excluding the terminal box 19 is attached to the back side of the frame 11, and a portion surrounded by the frame 11, the solar cell panel 18, and the back side panel 24 and excluding the terminal box 19 is provided. The sealed space S is filled with a foamable synthetic resin 25. An injection hole 26 for injecting the foam material into the sealed space S is provided on the side surface 11 a of the frame 11.

  In order to fill the sealed space S with the foamable synthetic resin, the solar cell panel 18 and the back panel 24 are sandwiched from above and below by thick steel plates (not shown) and a foamed urethane stock solution is injected into the sealed space S from the injection hole 26. After the injection, the injection hole 26 is sealed, and the foamed urethane stock solution is heated and foamed at about 80 ° C. for 30 minutes.

  By sandwiching the solar cell panel 18 and the back panel 24 with thick steel plates, even if the urethane resin is foamed and the internal pressure is increased, the solar cell panel 18 and the back panel 24 can be prevented from being expanded and deformed.

  If the thick steel plate is removed after the foamed synthetic resin reaches room temperature, a solar cell module in which the foamable synthetic resin 25 is filled in the sealed space S is obtained. What is necessary is just to carry out about the process of the electric wire 20 grade | etc., Of the terminal box 19 after that.

  This solar cell module can be used in a form that covers a surface filled with water, such as a water purification plant or a sewage treatment plant. If the total specific gravity is made smaller than the specific gravity of water, it will fall on the water surface. Even if it does not permeate into the solar cell panel 18 and sinks below the water surface, it can be floated on the water surface.

Furthermore, in this embodiment, a urethane resin is used as the foamed resin, but other foaming agents can be used regardless of the thermoplastic resin and the thermosetting resin.

It is the perspective view seen from the surface of the solar cell panel. It is the perspective view seen from the back surface. It is AA sectional drawing of FIG. It is an expanded sectional view of a solar cell panel. It is sectional drawing of the conventional solar cell panel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Frame 12 Groove part 13 Glass plate 14, 16 Resin plate 15 Solar cell 17 Fluoropolymer film 18 Solar panel 19 Terminal box 20 Electric wire 21 Connector 22 Lid 23 Grommet 24 Back side panel 25 Foaming synthetic resin 26 Injection hole

Claims (4)

  A frame is attached around a solar cell panel in which a plurality of solar cells are arranged on a substrate, and a terminal box for connecting an electric wire to the solar cell panel is disposed on the back side of the solar cell panel. The surface side is surrounded by the solar cell panel except the terminal box on the back side by the back side panel to form a sealed space excluding the terminal box portion on the back side of the solar cell panel, and foamed in the sealed space A solar cell module filled with a synthetic resin.   The solar cell module according to claim 1, wherein the foamable synthetic resin is heated and foamed after injecting a raw material into the sealed space.   The solar cell module according to claim 1, wherein the terminal box has a lid and has a watertight structure inside.   The solar cell module according to claim 1, wherein the entire specific gravity is set to 1 or less so that the solar cell module can float on the water surface.

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