TWI533462B - Solar module - Google Patents

Description

Solar module

The invention relates to a battery module, in particular to a solar module which can be used as a roof building material.

In order to save the cost of electric energy, the general plant factory usually installs solar panels on the roof of the greenhouse for planting the plants, such as the patent of Taiwan Patent Publication No. 201436265 "Solid Module with Uniform Light". The solar module of the patent is used as a roof and comprises a transparent substrate, a solar wafer, a hot melt adhesive film and a transparent cover. Wherein, a diffusion film is provided between the transparent substrate and the solar wafer.

In use, a portion of the light is converted into electrical energy through the solar wafers to achieve power generation, and another portion of the light that is not converted by the solar cells enters the scattering film, and the light is evenly distributed through the scattering film and then uniformly The ground is irradiated on the plants to enhance the cultivation effect of the plants.

However, not all wavelengths of light energy can be absorbed by plants, so the above-mentioned method of uniformly distributing the remaining light onto plants, only a part of the wavelength range of wavelengths suitable for plant growth will be utilized, but still Part of the light is not absorbed by solar cells or plants. Therefore, the existing solar modules have yet to be improved in terms of light energy utilization.

Accordingly, it is an object of the present invention to provide a solar module that increases the utilization of light energy.

Therefore, the solar module of the present invention comprises: a first light transmissive material on the light receiving side, a second light transmissive material disposed at a distance from the first light transmissive material and located on the backlight side, and a first translucent material disposed on the first translucent material. a solar unit between the light material and the second light transmissive material, and an optical adjustment unit disposed between the solar unit and the second light transmissive material.

The solar unit includes a plurality of solar cells spaced apart from each other, and a space between two adjacent solar cells defines a light transmissive space through which light can be projected toward the second light transmissive material. The optical adjustment unit comprises a light transmissive substrate, a plurality of scattering particles blended in the light transmissive substrate and capable of scattering light, and a plurality of blending particles in the light transmissive substrate and absorbing light toward the first The two light transmissive materials emit fluorescent fluorescent material.

The effect of the invention is that the light that is not converted by the solar cells can be converted into fluorescent light by being absorbed by the fluorescent material, which not only improves the utilization of light energy, but also increases the proportion of light in a suitable wavelength range projected on the plant. Increase plant absorption. Combined with the scattering particles to scatter light and evenly distribute the light, the light can be uniformly irradiated on the plant and is the most suitable wavelength band for plant growth to accelerate plant growth and improve plant cultivation.

1‧‧‧First light transmissive material

2‧‧‧Second light-transmissive material

3‧‧‧Solar unit

31‧‧‧ solar cells

310‧‧‧Lighting space

32‧‧‧Package

4‧‧‧Optical adjustment unit

41‧‧‧Light transmissive substrate

411‧‧‧First membrane body

412‧‧‧Second membrane

42‧‧‧ scattering particles

43‧‧‧Fluorescent materials

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a side cross-sectional view of a first embodiment of a solar module of the present invention; A side cross-sectional view of a second embodiment of the inventive solar module; and FIG. 3 is a side cross-sectional view of a third embodiment of the solar module of the present invention.

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 a solar module of the present invention comprises a first light transmissive material 1 on the light receiving side, a second light transmissively disposed on the first light transmissive material 1 and located on the backlight side. 2, a solar unit 3 disposed between the first light transmissive material 1 and the second light transmissive material 2, and an optical adjustment unit disposed between the solar unit 3 and the second light transmissive material 2 4.

The first light transmissive material 1 and the second light transmissive material 2 are all in the form of a plate body, and the material thereof may specifically be glass, acrylic, ethylene-vinyl acetate copolymer (EVA), polycarbonate (PC), Polytetrafluoroethylene (PTFE) or ethylene-tetrafluoroethylene polyester (ETFE), but not limited to the above materials.

The solar unit 3 includes a plurality of solar cells 31 spaced apart from each other, and a package 32 enclosing the solar cells 31.

The solar cells 31 can specifically adopt three or five solar powers. Pool, single crystal germanium solar cell, polycrystalline germanium solar cell or copper indium gallium (di) selenide solar cell. In this embodiment, the solar unit 3 further includes a plurality of ribbon conductors (not shown), and the solar cells 31 are electrically connected to each other through the ribbon conductors, and any two adjacent solar energy A light transmissive space 310 is defined between the cells 31 for allowing light to pass therethrough toward the second light transmissive material 2.

The package material 32 is filled between the light-transmissive spaces 310 and between the solar cells 31 and the first light-transmissive material 1 . The encapsulant 32 is made of a light transmissive material, specifically ethylene-vinyl acetate copolymer, acrylic, polyurea or other materials that can be used for encapsulation.

The optical adjustment unit 4 includes a light-transmitting substrate 41 disposed between the solar unit 3 and the second light-transmitting material 2, and a plurality of scattering particles blended in the light-transmitting substrate 41 to scatter light. And a plurality of fluorescent materials 43 blended in the light-transmitting substrate 41 to absorb light and emit fluorescence toward the second light-transmitting material 2.

The light transmissive substrate 41 includes a first film body 411 in which the scattering particles 42 are blended, and a second film body 412 in which the phosphor materials 43 are blended. The first film body 411 is disposed between the solar cell 3 and the second film body 412 . The second film body 412 is disposed between the first film body 411 and the second light transmissive material 2 . In practice, the order of setting the first film body 411 and the second film body 412 can be changed. The material of the first film body 411 and the second film body 412 is an ethylene-vinyl acetate copolymer.

The scattering particles 42 may scatter light, which may be nano particles or micro particles, and the specific material of the scattering particles 42 may be titanium oxide (TiO ₂ ). The scattering particles 42 have a refractive index of 1.5 to 2.5. When the refractive index of the scattering particles 42 is less than 1.5, the scattering effect is not significant; when the refractive index of the scattering particles 42 is greater than 2.5, since the scattering particles 42 are usually colored inorganic salts, the portion will be The wavelength of light is absorbed by it.

The fluorescent material 43 absorbs light and emits fluorescence toward the second light-transmitting material 2, and the fluorescent light is in a wavelength range in which the plant absorption effect is excellent. Specifically, the emission wavelength of the fluorescent light may range from 400 to 1600 nm. In practice, the phosphor material 422 may be selected from an organic fluorescent material or an inorganic fluorescent material, and is not particularly limited. However, when the fluorescent material 422 is an organic fluorescent material, the organic fluorescent material is dispersed in the second film body 412 in a molecular state; when the fluorescent material 422 is made of an inorganic fluorescent material, The inorganic phosphor material is dispersed in the second film body 412 in a particle state, as shown in FIG.

The embodiment is suitable for use as a roofing building material, and the light transmissive effect can introduce external sunlight into the room, and at the same time, the solar energy unit 3 can convert the light energy into electrical energy for use.

Specifically, when the light is irradiated to the solar module of the present invention, light passes through the first light transmissive material 1 and the packaging material 32, and part of the light is irradiated on the solar cells 31, and the other part of the light is irradiated. Then, the light transmissive space 310 between any two adjacent solar cells 31 is directly projected toward the second light transmissive material 2. Among the light rays that are irradiated to the solar cells 31, the solar cells 31 can absorb most of the light and convert them into electric energy, and the remaining unabsorbed light continues through the solar cells 31. And projected toward the second light transmissive material 2.

Then, the light that is directly incident on the second light transmissive material 2 directly passing through the light transmissive space 310 between the two adjacent solar cells 31 is not absorbed or converted by the solar cells 31, Light that is not absorbed by the solar cell 31 enters the light-transmitting substrate 41. At this time, the scattering particles 42 in the transparent substrate 41 can cause optical phenomena such as refraction, reflection, and scattering to enter the first film body 411, so that the light in the first film body 411 can be evenly distributed. Then, it is projected toward the second film body 412.

More importantly, when light enters the second film body 412, light can be absorbed through the phosphor materials 43, and the phosphors can be emitted toward the second light transmissive material 2, respectively. In other words, the present invention can absorb the aforementioned light that is not absorbed by the solar cell 31 through the arrangement of the phosphor materials 43 and convert it into fluorescence suitable for the wavelength range of the plant growth, so that the light can be efficiently used by the plant. The absorption and utilization can not only improve the utilization of light energy, but also increase the proportion of light in a suitable wavelength range projected on plants and increase the absorption effect of plants. The effect of evenly distributing the light scattering by the scattering particles 42 is such that after the light is emitted from the second light-transmitting material 2, the light can be uniformly irradiated on the plant and is the most suitable wavelength band required for plant growth to accelerate the plant. Grow and improve plant cultivation.

Referring to FIG. 2, a second embodiment of the solar module of the present invention is substantially the same as the first embodiment. The difference between the two is that in the embodiment, the transparent substrate 41 is not divided into the first Membrane body 411 (see Fig. 1) and second film body 412 (see Fig. 1). That is, the scattering particles 42 and the fluorescent material 43 of the present embodiment are uniformly blended and distributed on the transparent substrate 41. In the body.

In this embodiment, in addition to the scattering effect of the phosphor material 43 , the path of the light in the transparent substrate 41 is increased, and the scattering particles 42 are directly mixed with the phosphor 43 . The practice in the same layer helps the light to be absorbed by the phosphors 43 and converted into fluorescent light of a suitable wavelength.

It should be noted that, when the fluorescent material 422 is selected from the organic fluorescent material, the organic fluorescent material is uniformly dispersed in the molecular state to the whole of the transparent substrate 41; the fluorescent material 422 is selected from inorganic fluorescent materials. In the case of a light material, the inorganic fluorescent material is uniformly dispersed in the entire state of the light-transmitting substrate 41 in a particle state, that is, as shown in FIG.

Referring to FIG. 3, a third embodiment of the solar module of the present invention is substantially the same as the second embodiment, and the difference between the two is that the phosphor materials 422 of the embodiment are made of an organic fluorescent material, and The phosphor materials 422 are grafted onto the scattering particles 42 in a chemically bonded manner.

Finally, it should be noted that, in Figures 1, 2, and 3, the scattering particles 42 are indicated by larger black dots, and the fluorescent materials 43 are indicated by smaller black dots, but the difference in size of the black dots is only For the purpose of distinguishing between the understanding and reading of the person skilled in the art, it is not intended to limit the conditions that can be implemented by the present invention. Therefore, the size and shape of the black dot are not technically significant, that is, the black dot may be The modification of any shape, the change of the proportional relationship or the adjustment of the size should not fall within the scope of the technical content disclosed by the present invention without affecting the effects and the achievable objectives of the present invention. .

However, the above is only the embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and the patent specification of the present invention are still It is within the scope of the patent of the present invention.

1‧‧‧First light transmissive material

2‧‧‧Second light-transmissive material

3‧‧‧Solar unit

31‧‧‧ solar cells

310‧‧‧Lighting space

32‧‧‧Package

4‧‧‧Optical adjustment unit

41‧‧‧Light transmissive substrate

411‧‧‧First membrane body

412‧‧‧Second membrane

42‧‧‧ scattering particles

43‧‧‧Fluorescent materials

Claims (7)

A solar module comprising: a first light transmissive material on the light receiving side; a second light transmissive material disposed at an interval from the first light transmissive material and located on the backlight side; a solar unit disposed on the first through Between the light material and the second light transmissive material, and comprising a plurality of solar cells spaced apart from each other, any two adjacent solar cells define a light transmission between the adjacent solar cells that allows light to pass through and is projected toward the second light transmissive material. And an optical adjustment unit disposed between the solar unit and the second light transmissive material, and comprising a light transmissive substrate, and a plurality of scattering particles blended in the transparent substrate and capable of scattering light. And a plurality of phosphor materials blended in the light transmissive substrate and absorbing light to emit fluorescence toward the second light transmissive material; wherein the light transmissive substrate comprises a layer for the scattering particles to be incorporated therein a first film body, and a second film body in which the phosphor materials are blended; the first film body is disposed between the solar cell and the second film body, and the second film body is disposed on Between the first film body and the second light transmissive material; the first film And the material of the second film body is an ethylene - vinyl acetate copolymer. The solar module of claim 1, wherein the scattering particles and the phosphor materials are uniformly blended and distributed in the light transmissive substrate. The solar module of claim 1, wherein the fluorescent materials are It absorbs light and emits fluorescence with a wavelength range of 400 to 1600 nm. The solar module of claim 1, wherein the scattering particles have a refractive index of 1.5 to 2.5. The solar module of claim 1, wherein the solar unit further comprises a package covering the solar cells. The solar module of claim 5, wherein the encapsulant is filled in the light transmissive spaces and between the solar cells and the first light transmissive material. The solar module of claim 5, wherein the material of the encapsulant is ethylene-vinyl acetate copolymer, acrylic or polyurea.