JPH0573277B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a solar cell device for photovoltaic power generation. [Prior Art] In general, a solar cell device is constructed by fixing a solar cell module 9 to a support frame 8, as shown in FIGS. 3a and 3b. A thermoplastic resin filling material 3 is used between a cover glass 2 with high light transparency and a back material 4 made of a synthetic film with low moisture permeability, which are connected in parallel and encapsulated.
In order to prevent water absorption into the filling material, the periphery is fixed with a metal frame 7 via a rubber elastic sealing material 5 and an adhesive 6 such as a silicone sealer. In this structure, end sealing is performed using a rubber elastic body, adhesive, or a metal frame. Incidentally, this kind of device is shown in Japanese Patent Application Laid-Open No. 58-54679 and Japanese Utility Model Application Publication No. 61-34752. [Problems to be solved by the invention] In the above conventional technology, even if Al is used, the weight of the metal frame accounts for about 30% of the solar cell module 9.
No consideration was given to reducing weight, and when the frame was installed, the sides were covered with metal frames on all sides, resulting in poor ventilation, no consideration given to heat dissipation, and it was heavy and exposed to sunlight. There were problems such as a disadvantage in terms of output due to the rise in temperature of the battery element 1. An object of the present invention is to provide a lightweight solar cell device that has high mechanical strength, weather resistance, good heat dissipation properties, can provide high output, and is lightweight. [Means for solving the problem] The above purpose is to arrange a plurality of solar cell elements connected in series or in parallel between high light transmittance glass and low moisture permeability synthetic resin film, and to The space between the two is filled with a transparent synthetic resin, and the periphery thereof is covered with a weather-resistant synthetic resin made of bisphenol A type epoxy resin and an amine curing material, to which calcium carbonate and carbon powder, and short glass fibers are added. achieved by. [Function] In the present invention, instead of using a metal frame that causes weight increase, the entire circumference of the end of the solar cell module is sealed with a weather-resistant synthetic resin. Weather-resistant synthetic resin is made by adding pigments such as calcium carbonate and carbon powder to epoxy resin to prevent yellowing and decrease in material strength and improve weather resistance, and short glass fibers of about 1 to 3 mm are added. This prevents cracks from occurring. Since the solar cell module is simply sealed with a weather-resistant synthetic resin, if it becomes a long object and bends, there is a risk that the interface between the glass, the synthetic film, and the synthetic resin will peel off due to repeated bending. [Example] Hereinafter, the first example shown as the first example of the present invention will be described.
This will be explained using figures. In FIGS. 1a and 1b, the same or equivalent parts as shown in FIG. 3 are given the same reference numerals. The solar cell module 19 is fixed to the support frame 8 by a support body 17. The solar cell module 19 does not use a metal frame, and the entire circumference of the end portion is sealed with a weather-resistant synthetic resin, that is, a sealing material 15. The sealing material 15 is made of the above-mentioned pigment, carbon powder, and glass short fibers whose main component is a bisphenol A type epoxy resin with an amine resin as a curing agent shown in Table 1, and is used to seal the ends of the module. A weather resistance test was conducted by applying the sealant as sealant 15 to

【table】

〔Effect of the invention〕

According to the present invention, 20 to 28% of the time compared to the conventional one can be achieved without using an expensive and heavy metal frame.
It reduces weight and improves ventilation, so
It is effective in that it is less prone to deterioration of properties due to temperature rise, has high mechanical strength, and improves weather resistance.

[Brief explanation of the drawing]

1a and 1b show an embodiment of the device of the present invention,
a is a perspective view, b is a perspective view along the -cutting line of a, FIG. 2 is a perspective view showing a second embodiment of the device of the present invention, FIGS. 3 a and b show a conventional device, and a is a A perspective view, b is a sectional view taken along the - cutting line of a. DESCRIPTION OF SYMBOLS 1...Solar cell element, 2...Glass, 3...Synthetic resin, 4...Synthetic resin film, 15...Sealing material, 17...Support, 18...Support frame, 19
...Solar cell module.

Claims (1)

[Claims] 1. Multiple solar cell elements connected in series or parallel are placed between high light transmittance glass and low moisture permeability synthetic resin film, and the space between the glass and synthetic resin film is filled with transparent synthetic resin, and the periphery is weatherproofed. In a solar cell device in which a solar cell module coated with a synthetic resin is fixed to a support frame, the weather-resistant synthetic resin is composed of a bisphenol A type epoxy resin and an amine hardening material, and calcium carbonate and carbon powder, and A solar cell device characterized in that short glass fibers are added.