The present invention relates to a solar power generation system, and more particularly, to a photovoltaic system which utilizes black body radiation effect, and does not need to coat an anti-reflection layer on the solar panel and the solar tracking system. The solar power generation system absorbs full spectrum of the full incoming sunlight and transfers the sunlight into electric energy via different solar panels on the surfaces of the cone-shaped protrusions. The system has reinforced mechanical strength and better heat dispensing feature. The protrusions are able to be installed on an object with irregular surface.
Due to increasing demand for new energy to meet requirements of the modern living way, the energy from the earth is gradually exhausted and a new replacement energy source is needed. The solar energy is one of the replacement energy which is a battery made of semi-conductive material and the solar battery transforms light energy into electric energy.
The conventional solar power generation system includes a flat panel with multiple solar cells composing of an antireflective coating, a first conductive layer or contact grid, a photoelectric conversion layer and a second conductive layer or back contact on a base board made of glass or silicon, an antireflective layer and a lead wire. The incoming light reaches the base board from the bottom thereof and is reflected, the light passes through the first conductive layer and reaches the photoelectric conversion layer which generates electron flows and electron hole flows. The light passes through the first and second conductive layers and is sent to outside of the base board. However, there is a flat surface located between the first conductive layer and the photoelectric conversion layer, before the incoming light is reflected into the photoelectric conversion layer, a part of the incoming light is reflected and scattered by the flat surface between the first conductive layer and the photoelectric conversion layer, and moves away from the photoelectric conversion layer, so that this part of the incoming light is not absorbed by the photoelectric conversion layer and the efficiency of the solar cells are reduced. Therefore, some developers put an anti-reflection layer on the surface of the solar panel, but this will increase the cost and time required for manufacturing the solar panels. Due to different material characteristics, energy saved can transfer partial spectrum or light into power.
Furthermore, the sunlight energy which is not transferred into energy in the solar cells escapes from the photovoltaic cells by way of reflection or it becomes thermal energy which is trapped in the solar cells to cause overheat to the parts of the PV cells. The phenomenon of overheat reduces the conversion efficiency of the solar cells. Generally, the solar cells dispense the heat by two ways, one of which is that the heat is sent to outside air by way of radiation via the package surface of the solar cells. The other way is to deliver the heat to another circuit board by the package structure and the circuit board sending the heat to the outside air. However, when the solar energy absorbed by the solar cells is doubled, the temperature increases dramatically and the heat cannot be quickly escaped from the package surface of the circuit board to the outside air. Therefore, the efficiency of photoelectric conversion reduces.
Besides, the base board of the solar panel is a hard board and occupies certain space, it cannot be mounted to an irregular surface so that restriction of use is a problem and is one of the main concerns of the conventional solar power generation. In addition, in order to let the solar panel to constantly aim the sun to increase the absorbed sunlight and the generated power, some power generation systems are equipped with sun tracking system. Nevertheless, the sun tracking system increases the cost due to maintenance and consums of electric power.
The present invention intends to provide a solar power generation system which is designed to improve the shortcomings of the conventional solar panels.
The main object of the present invention is to provide a solar power generation system which comprises multiple cones connected to a base in an array fashion and the adjacent surfaces between the cones with solar panels made by different materials. The solar panels on the boards of the cones can be any materials with different spectrum absorbing capabilities as mentioned above. When the incoming light reaches the boards of the cones, the light reflects, diffuses and is absorbed, just like entering a black hole and won't be released. Any angular board of the cones can absorb the reflected light of the same or different spectrums so as to increase the effective areas for absorbing the light. That means that the light energy can be effectively collected and the solar panels transfer the solar energy into electric energy, which is used to generate electric power.
Another object of the present invention is to provide a solar power generation system wherein air flows through the gaps between the cones to increase the convection heat transfer, so that the heat dispensing area increases; as the heat is dispensed quickly and the efficiency of the photovoltaic conversion will increase.
A further object of the present invention is to provide a solar power generation system wherein the base of the solar panels are flexible, so that the solar power generation system can be applied to irregular surfaces of objects.
Yet another object of the present invention is to provide a solar power generation system wherein the manufacturing cost becomes low and there is no need to add anti-reflection layer as long as the angles of the cones are small and no incoming sunlight will escape from the array. And there will be no need to install the sun tracking system so as to reduce the time required and the cost for manufacturing.
The solar power generation system of the present invention comprises multiple cones connected to a base in an array manner and each cone comprises at least three boards. Each cone has a bottom surface which can be right triangle surface, square surface, rhombic surface, rectangular surface or hexagonal surface.
Multiple solar panels made of different materials are connected to the corresponding boards of the cones and the solar panels on the cones, which may have any material mentioned above. The solar panels transfer the solar energy from full spectrum of light into electric energy which is used to generate electric power.
The present invention will become more obvious from the following description as in connection with the accompanying drawings, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
Referring to
Each board 31 has multiple solar panels 4 connected thereto and each of the solar panels 4 comprises a first conductive layer, a photoelectric conversion layer and a second conductive layer (not shown). As shown in
Besides, each of the solar panels 4 is made of silicon or non-silicon material. The silicon materials include single crystal silicon, polysilicon and amorphous silicon. In particular use, the solar panels on the cone surface can be any kind of materials as long as they can convert full spectrum of light energy complementarily.
Different materials absorb different wavelengths on spectrum and are arranged alternatively on the cones 3 in this embodiment. When the incoming light is reflected by the boards 31 of the cones 3, the light that cannot be absorbed by some of the cones 3 will reach the boards 31 on other cones 3 and will be absorbed by the boards 31. Therefore, the alternatively arranged cones 3 can absorb a wide rage of wavelengths on spectrum. In other words, the present invention careates better efficiency for collecting light and photoelectric conversion.
Besides, the combination of the solar panels 4 and the cones 3 is to include multiple units of solar panels 4 on a top surface of a huge board and the huge board is cut into multiple boards 31 which are connected to be multiple cones 3. The solar power generation system can also be made by an integral cone 3 to reduce the manufacturing cost.
The solar power generation system 1 comprises multiple cones 3 connected to the base 2 in an array manner and each cone 3 has multiple solar panels 4 connected thereto, or one cone 3 performs as a solar power generation system. The incoming light reaches the boards 31 of the cones and the solar power generation system 1 converts the solar energy into electric energy. The reflected light can reach another board 31 or cone 3, which means the light can be absorbed from any direction or angle such that the area for collecting the light is increased. Any angular board 31 of the cones 3 comprises solar panels made of different materials so as to absorb the light of different spectrums. In another word, not only the area for absorbing the light is increased, the light of different spectrums can also be absorbed. The boards 31 or cones 3 are three-dimensional objects so that the air flow will not be stopped and the area for dispensing heat will be increased. The efficiency of photoelectric conversion will then also be increased. Because the base 2 is flexible and the cones 3 is connected to the base 2, the solar power generation system 1 can be applied to different irregular surfaces and effectively reduces the surface temperature and increases the efficiency of photoelectric conversion. The present invention is manufactured at low cost and is a practical innovation. In addition, the cone-shaped structure increases the mechanical strength of the solar panels which bears ice, snow, rain, wind and sand. The rain can clean the surface of the solar battery panels.
The fourth embodiment is not disclosed in the drawings and the conductive layers of the solar panels 4 of the cones 3 output pre-set currents and voltages by way of parallel circuits or serial circuits.
While we have shown and described the embodiment of the present invention, it should be clear to those the state-of-the-art creatation that further embodiments may be made without distracting the scope of the present invention.