TWM500990U - Solar energy module - Google Patents

Description

Solar module

The present invention relates to a battery module, and more particularly to a solar module for converting light energy into electrical energy.

The existing solar module usually comprises two plates spaced apart from each other, a plurality of solar cells electrically connected between the plates, and a solar cell disposed between the plates and surrounding the solar cells. Packaging material.

In the use of the solar cell, the light entering the solar module contains light in a wavelength range (400-1100 nm) that can be used for power generation, and ultraviolet light and infrared light.

When light enters the solar module and passes through the package and the solar cells, the solar cells generally cannot completely absorb the light having the wavelength of 400 to 1100 nm. In other words, when light enters the solar module, some of the light having a wavelength of 400 to 1100 nm can be converted into electrical energy for use by the solar cells, but some of the light has a wavelength of 400 to 1100 nm. Not yet absorbed. It can be seen that the conventional solar module has a low light absorption rate for light having a wavelength of 400 to 1100 nm, and has a problem that the photoelectric conversion efficiency is not high.

In addition, in the light entering the solar module, the ultraviolet light will deteriorate the package material and reduce the service life of the solar module, and when the ultraviolet light and the infrared light are accumulated in the solar module, The operating temperature of the solar module is too high, which leads to a decrease in the photoelectric conversion efficiency of the solar cells.

Therefore, the object of the present invention is to provide a solar module which can avoid the problem of excessive operating temperature caused by the accumulation of thermal energy, thereby improving the photoelectric conversion efficiency.

Therefore, one of the solar modules of the present invention comprises: a first plate on the light receiving side, a second plate spaced apart from the first plate and on the backlight side, and a first plate and the second plate. a solar cell unit, a package material between the first plate and the second plate and covering the solar cell unit, and a translucent half disposed between the second plate and the solar cell unit Anti-film. The transflective film allows ultraviolet light and infrared light to pass through, and can reflect light having a wavelength of 400 to 1100 nm toward the solar cell.

The effect of the novel is that the reflection of light having a wavelength of 400 to 1100 nm toward the solar cell through the transflective film can improve the light absorption rate of the solar cell to light having a wavelength of 400 to 1100 nm. Improve photoelectric conversion efficiency. In addition, the transflective film can also allow ultraviolet light and infrared light to pass through and exit the second plate, thereby avoiding the problem that the accumulated heat energy causes the solar module to operate at an excessive temperature and reduce the photoelectric conversion efficiency, thereby Can improve the photoelectric conversion efficiency.

Another solar module of the present invention comprises: a first plate on the light receiving side, a second plate spaced apart from the first plate and on the backlight side, and a first plate disposed between the first plate and the second plate a solar cell unit, a package material between the first plate and the second plate and covering the solar cell unit, and a transflective film disposed between the first plate and the solar cell unit . The transflective film allows light having a wavelength of 400 to 1100 nm to penetrate and reflects ultraviolet light and infrared light toward the first plate.

The effect of the novel is that the solar energy module can be prevented from accumulating heat energy by reflecting the ultraviolet light and the infrared light through the transflective film in a light wavelength range (400~1100 nm) that does not affect the absorption of the solar cell unit. The group operating temperature is too high to reduce the photoelectric conversion efficiency, thereby improving the photoelectric conversion efficiency.

1‧‧‧ first plate

2‧‧‧Second plate

3‧‧‧Package

4‧‧‧Solar battery unit

41‧‧‧ solar cells

5‧‧‧Semi-transparent film

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is an incomplete side cross-sectional view illustrating a first embodiment of the novel solar module. FIG. 2 is an incomplete side cross-sectional view showing the structure of a second embodiment of the novel solar module.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1, a first embodiment of the solar module of the present invention comprises: a first plate 1 and a second plate 2 spaced apart from each other, and a first one between the first plate 1 and the second plate 2; The solar cell unit 4, a package material 3 and a transflective film 5 are provided.

The first plate 1 is a light-transmissive plate and is located on the light-receiving side, and the light-receiving side refers to a side of the solar module that is mainly exposed to light when in use. The material of the first sheet material 1 may specifically be glass, polycarbonate (PC) or polymethyl methacrylate (PMMA).

The second plate 2 is located on the backlight side, and the backlight side refers to the side of the solar module that is facing away from the light when in use. The material of the second plate 2 may specifically be glass or polyethylene terephthalate (PET), and the second plate 2 may be made of a light-transmissive or non-transmissive plate, and is not particularly limited.

The solar cell unit 4 includes a plurality of solar cells 41 arranged in an array between the first plate member 1 and the second plate member 2, and a plurality of solder ribbons electrically connected between the solar cells 41 (the figure Show). As long as the solar cells 41 can convert light energy into electric energy, it is not necessary to limit the types of the solar cells 41. Since the structure of the solar cells 41 and the bonding relationship between the solar cells 41 and the solder ribbons are not the focus of the present invention, they will not be described in detail.

The package material 3 of the embodiment is located between the first plate material 1 and the second plate material 2 and is wrapped around the solar cell unit 4; and the transflective film 5 is disposed on the second plate material 2 and Between the packaging materials 3. In practice, as long as the transflective film 5 is disposed on the second plate 2 and the The purpose can be achieved between the solar cell units 4, for example, the package material 3 can also be coated around the solar cell unit 4 and the transflective film 5 at the same time.

The material of the packaging material 3 may specifically be ethylene-vinyl acetate copolymer (EVA) or the like, but is not limited to the foregoing examples.

The transflective film 5 is specifically an optical film using a 3M company model, Cool Mirror Film 330, which allows ultraviolet light and infrared light to pass through, and can reflect light having a wavelength of 400 to 1100 nm.

In this embodiment, light is passed through the first plate 1 into the solar module, and passes through the package 3 and the solar cell unit 4. At this time, the solar cell 41 of the solar cell unit 4 A large part of the light having a wavelength of 400 to 1100 nm is absorbed and converted into electric energy for use, and the light having a wavelength of 400 to 1100 nm which has not been absorbed is further advanced toward the transflective film 5 together with the ultraviolet light and the infrared light.

The semi-transmissive film 5 can reflect the characteristics of light having a wavelength of 400 to 1100 nm, and the light having a wavelength of 400 to 1100 nm that has not been absorbed can be reflected toward the solar cells 41 to increase the reflection of the light that has not been absorbed. Refraction path and scattering effect, thereby increasing the chances of the solar cells 41 absorbing the light that has not been absorbed, thereby improving the light absorption rate of the solar cells 41 for light having a wavelength of 400 to 1100 nm, thereby effectively improving photoelectric conversion effectiveness.

At the same time, the transflective film 5 can also penetrate the ultraviolet light and the infrared light, so that the ultraviolet light and the infrared light can be emitted out through the second plate 2 without accumulating in the first plate 1 and the Between the second plates 2. in this way As a result, the solar module does not accumulate excessive thermal energy, so that the problem that the solar module 41 has a high operating temperature and the photoelectric conversion efficiency of the solar cells 41 is reduced.

Referring to FIG. 2, in a second embodiment of the solar module of the present invention, the first embodiment is substantially the same, and the difference between the two is that the transflective film 5 of the embodiment is disposed on the first plate 1 and Between the packaging materials 3. In the implementation, as long as the transflective film 5 is disposed between the first plate material 1 and the solar cell unit 4, the object can be achieved, for example, the package material 3 can be simultaneously coated on the solar cell unit 4 and The periphery of the transflective film 5.

The transflective film 5 of the present embodiment specifically uses a multilayer film structure, which mainly utilizes the characteristics of penetration and reflection when light is incident through different media, and controls the thickness of each layer of the optical film, thereby allowing the wavelength to be 400 to 1100 nm. The light penetrates and reflects ultraviolet and infrared light.

In this embodiment, light is passed through the first plate 1 into the solar module, and the transflective film 5 reflects ultraviolet light and infrared light toward the first plate 1 to reduce ultraviolet light and The opportunity for infrared light to enter the package 3. In this way, not only the damage of the ultraviolet light to the packaging material 3 can be avoided, but the service life of the solar module can be prolonged, and ultraviolet light and infrared light can be prevented from accumulating in the solar module, and the solar temperature is caused by the working temperature being too high. The problem of the photoelectric conversion efficiency of 41 is lowered.

At the same time, the transflective film 5 can penetrate and project light of a wavelength of 400 to 1100 nm to the solar cell unit 4. At this time, the solar cell unit 4 can absorb the light of the aforementioned wavelength and convert it into Electrical energy is available for use.

In other words, in the light of the embodiment, the solar cell unit 4 absorbs the ultraviolet light and the infrared light, thereby preventing the accumulated heat energy from causing the solar module to operate at an excessive temperature. The problem of reducing the photoelectric conversion efficiency is indeed effective in improving the photoelectric conversion efficiency.

However, the above description is only for the embodiments of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent changes and modifications made by the present patent application scope and the contents of the patent specification are still It is within the scope of this new patent.

1‧‧‧ first plate

2‧‧‧Second plate

3‧‧‧Package

4‧‧‧Solar battery unit

41‧‧‧ solar cells

5‧‧‧Semi-transparent film

Claims (4)

A solar module comprising: a first plate on the light receiving side; a second plate spaced apart from the first plate and on the backlight side; a solar cell disposed between the first plate and the second plate a packaging material between the first plate and the second plate, and covering the solar cell unit; and a transflective film disposed between the second plate and the solar cell unit; the half The transflective film allows ultraviolet light and infrared light to pass through, and can reflect light having a wavelength of 400 to 1100 nm toward the solar cell. The solar module of claim 1, wherein the transflective film is disposed between the second plate and the package. A solar module comprising: a first plate on the light receiving side; a second plate spaced apart from the first plate and on the backlight side; a solar cell disposed between the first plate and the second plate a packaging material between the first plate and the second plate, and covering the solar cell unit; and a transflective film disposed between the first plate and the solar cell unit; the half Transflective film allows light with a wavelength of 400~1100nm to pass through It is transparent and can reflect ultraviolet light and infrared light toward the first plate. The solar module of claim 3, wherein the transflective film is disposed between the first plate and the package.