Patent Application
20250038563
This application claims the priority benefits of China application serial No. 2023109216496, filed on Jul. 26, 2023. The entirety of each of the above-mentioned patent applications is hereby incorporated by reference herein and made a part of this specification.
The present invention relates to a photovoltaic cell technology, particularly to an indoor charger equipment using a perovskite-based photovoltaic cell.
Human being has worked hard to overcome the greenhouse effect for tens of years. Nowadays, green electricity is often required in the development process of human beings, and the problem of supplying green electricity needs solving urgently. It is the global goal to reduce carbon emissions by 45% in 2030. Thus, various environment protection technologies emerge, and the efficiencies thereof are persistently advancing. Most green electricity devices, such as the silicon-based solar cells, are placed outdoors. Generally, indoor artificial light sources have very low illuminance and very narrow frequency bands, only functioning to illuminate and decorate. Because the indoor artificial light sources have a very low density of energy, the silicon-based solar cells cannot operate indoors but can only perform photoelectric conversion under sunlight illumination. However, solar power is likely to be affected by weather, light exposure, and dusts, thus instable in power generation efficiency. Besides, the industry still lacks a potential indoor green electricity device currently.
Accordingly, the present invention proposes an indoor charger equipment, which can use indoor artificial light sources to generate electricity and charge batteries, whereby to effectively solve the abovementioned problems.
The primary objective of the present invention is to provide an indoor charger equipment, which makes use of the characteristics of perovskite-based photovoltaic cells to effectively convert the light energy, which the silicon-based solar cells cannot utilize, into electric energy and recycle the light energy, which is originally wasted.
In order to achieve the abovementioned objective, the present invention provides an indoor charger equipment, which is used in an indoor space having an artificial light source and an electric appliance, and which comprises a photoelectric conversion module and an electric energy storage device. The artificial light source emits light. The photoelectric conversion module includes a plurality of perovskite-based photovoltaic cells. The perovskite-based photovoltaic cells are stacked into a multilayer structure facing the artificial light source and placed in the indoor space. The perovskite-based photovoltaic cells receive light. The light penetrates the perovskite-based photovoltaic cells in sequence, absorbed and converted into electric energy by the perovskite-based photovoltaic cells. The electric energy storage device is electrically connected with the photoelectric conversion module and electric appliance to store electric energy and output electric energy to the electric appliance for operation.
In one embodiment of the present invention, the abovementioned perovskite-based photovoltaic cell is a penetration-type perovskite-based photovoltaic cell.
In one embodiment of the present invention, the abovementioned photoelectric conversion module includes a transparent insulating layer at least formed between the perovskite-based photovoltaic cells.
In one embodiment of the present invention, the abovementioned transparent insulating layer also cover the outer sides of the perovskite-based photovoltaic cells.
In one embodiment of the present invention, the areas of the perovskite-based photovoltaic cells gradually increase from the side near the artificial light source to the side far away from the artificial light source.
In one embodiment of the present invention, the perovskite-based photovoltaic cell far away from the artificial light source has the lowest light transmittance.
In one embodiment of the present invention, the perovskite-based photovoltaic cells have openings allowing light to pass except the perovskite-based photovoltaic cell far away from the artificial light source.
In one embodiment of the present invention, the photoelectric conversion module has three or more perovskite-based photovoltaic cells and two or more openings. The sizes of the openings gradually increase from the side near the artificial light source to the side far away from the artificial light source.
In one embodiment of the present invention, the photoelectric conversion module has three or more perovskite-based photovoltaic cells and two or more openings. The sizes of the openings gradually decrease from the side near the artificial light source to the side far away from the artificial light source.
In one embodiment of the present invention, each of the perovskite-based photovoltaic cells has an insulating layer on a side thereof, which is far away from the artificial light source.
In one embodiment of the present invention, except the perovskite-based photovoltaic cell far away from the artificial light source, each of the perovskite-based photovoltaic cells has a reflecting layer on a side thereof, which is far away from the artificial light sources, and the reflecting layer is separated from the perovskite-based photovoltaic cell by an insulating layer.
In one embodiment of the present invention, except the perovskite-based photovoltaic cell far away from the artificial light source, each of the perovskite-based photovoltaic cells has an insulating layer on a side thereof, which is far away from the artificial light source, and the perovskite-based photovoltaic cell is separated from an additional perovskite-based photovoltaic cell by the insulating layer.
In one embodiment of the present invention, the photoelectric conversion module is disposed on the inner surface of a lampshade.
In one embodiment of the present invention, the indoor charger equipment has a plurality of photoelectric conversion modules arranged on a surface without overlapping.
In comparison with the prior arts, the indoor charger equipment of the present invention has the efficacies: operating in the place where the conventional silicon-based photovoltaic cells cannot operate, recycling the light energy originally wasted by the conventional silicon-based photovoltaic cells, and effectively converting the light energy into electric energy. In recent years, the efficiency of the perovskite-based photovoltaic cells has greatly risen or even exceeded the efficiency of the silicon-based photovoltaic cells. Further, the perovskite-based photovoltaic cell has advantages of simple fabrication process, low cost, and flexibility.
Below, the embodiments of the present invention will be described in detail to make easily understood the objectives, technical contents, characteristics, and accomplishments of the present invention.
Thereinafter, the present invention will be described in detail with the embodiments to enable the person having ordinary knowledge of the art to further understand the present invention.
The embodiments of the present invention are only to exemplify the present invention but not to limit the scope of the present invention. It should be particularly mentioned: while the ordinals, such as “first”, “second”, “third”, and “fourth”, are used to describe common objects, it is only to mean that these objects are different individual existences of similar objects but not to indicate that these objects should be arranged in a specified order or in a specified sequence unless there is a particular explanation in the text. In the condition that no conflict exists, the embodiments and the characteristics of the embodiments can be recombined arbitrarily. The scientific terms and technological terms used in the present invention have the same meanings as the persons having ordinary knowledge in the field understand unless they are particularly explained.
Refer to
The artificial light source 10 is a light source disposed in an indoor space, emitting light for illumination or decoration. The artificial light source 10 may be but is not limited to be an incandescent bulb, a halogen bulb, a mercury lamp, a fluorescent lamp, or a LED lamp.
The photoelectric conversion module 20 includes a plurality of perovskite-based photovoltaic cells 21. The perovskite-based photovoltaic cell 21 is made of a perovskite-structured ceramic material, which may be expressed by a general chemical formula ABX3, wherein A is a monovalent cation; B is a divalent cation; X is a monovalent halogen anion. It is preferred: the perovskite-based photovoltaic cell 21 used by the present invention is a penetration-type perovskite-based photovoltaic cell having the characteristics of a thin-film battery: light penetrability and flexibility. The perovskite-based photovoltaic cells 21 are stacked to form a multilayer structure, as shown in
The electric energy storage device 30 is electrically connected with the photoelectric conversion module 20, receives and stores the electric energy output by the photoelectric conversion module 20, and provides the electric energy to the electric appliance 40. The electric energy storage device 30 may be but is not limited to be a battery, a reserve-type electric water heater, or a heat-storage electric heater.
The electric appliance 40 is electrically connected with the electric energy storage device 30, receiving the electric energy stored by the electric energy storage device 30 for operation. The electric appliance 40 may be but is not limited to be a light-current electric appliance, such as a telephone, a computer, a television, an audio device, or a broadcasting system, an air conditioner, an electric water heater, or an electric radiator.
Next, the photoelectric conversion module 20 containing four perovskite-based photovoltaic cells 21 is used to illustrate several stack structures of the perovskite-based photovoltaic cells 21. In the following several embodiments, four perovskite-based photovoltaic cells 21 are respectively named as a first perovskite-based photovoltaic cell 211, a second perovskite-based photovoltaic cell 212, a third perovskite-based photovoltaic cell 213, and a fourth perovskite-based photovoltaic cell 214 from the side close to the artificial light source 10 to the side far away from the artificial light source 10.
Refer to
In the first embodiment, all the perovskite-based photovoltaic cells 21 have the same light transmittance. However, the perovskite-based photovoltaic cells 21 may respectively have different light transmittances in practice. Further, the light transmittance of the perovskite-based photovoltaic cell 21 far away from the artificial light source 10, i.e. the fourth perovskite-based photovoltaic cell 214, may be reduced via modifying the material, whereby to increase the photoelectric conversion efficiency. In the first embodiment, all the perovskite-based photovoltaic cells 21 have the same area. However, the perovskite-based photovoltaic cells 21 may respectively have different areas in practice. Further, the area of the perovskite-based photovoltaic cell 21 may gradually increase from the side near the artificial light source 10 to the side far away from the artificial light source 10. In other words, the areas of the fourth perovskite-based photovoltaic cell 214, the third perovskite-based photovoltaic cell 213, the second perovskite-based photovoltaic cell 212, and the first perovskite-based photovoltaic cell 211 decrease in sequence.
Refer to
While the photoelectric conversion module 20 has three or more perovskite-based photovoltaic cells 21, the total number of the openings 23 is two or more. The openings 23 gradually grow larger from the side near the artificial light source 10 to the side far away from the artificial light source 10. In another embodiment, the openings 23 may gradually grow smaller from the side near the artificial light source 10 to the side far away from the artificial light source 10. In the second embodiment, the photoelectric conversion module 20 includes four perovskite-based photovoltaic cells 21; the openings 23 decrease in sizes in the sequence of the first perovskite-based photovoltaic cell 211, the second perovskite-based photovoltaic cell 212, and the third perovskite-based photovoltaic cell 213 except the fourth perovskite-based photovoltaic cell 214, whereby more light of the full frequency bands can reach the fourth perovskite-based photovoltaic cell 214.
Refer to
Refer to
The indoor charger equipment of the present invention may be applied to household indoor spaces. Refer to
In order to achieve industrial power saving, the lampshade of the photolithographic illumination device is covered by the photoelectric conversion module, whereby to achieve illumination and power generation simultaneously. In addition to recycle electric energy and reduce carbon emission, the present invention can absorb the short-wavelength light source (the wavelengths thereof are shorter than 500 nm), which the photolithographic process should keep away from. Refer to
Below is discussed the efficacy of the present invention applied to an environment using 200 pieces of tube lamps. A LED tube lamp consumes a power of 0.025 KWh/hr. Suppose that the photoelectric conversion efficiency of a perovskite-based photovoltaic cell is 20% (i.e. able to recycle 20% electric energy). If the stack structure of the first embodiment is adopted, each photoelectric conversion module has four perovskite-based photovoltaic cells and has a photoelectric conversion efficiency of 46.875%. Thus, 0.025 (KWh/hr)×0.46875 (conversion efficiency)×200 (pieces of tube lamps)×24 (hr)×365 (days)=20531.25 KWh/yr, i.e. 20.5 MWh/yr. 20.5 MWh/yr×0.554 (kg/KWh)=11.357 ton/yr. It means that 11.357 tons of CO2 emissions will be reduced each year. Via applying to the illumination of a photolithographic environment, the present invention can recycle electric energy, reduce CO2 emissions, raise the ratio of green electricity, and push up carbon neutralization.
In conclusion, the present invention provides an indoor charger equipment, which has a multilayer structure of perovskite-based photovoltaic cells able to absorb short-wavelength light. The perovskite-based photovoltaic cells of the indoor charger equipment of the present invention can convert the light energy, which is not utilized but wasted by the conventional silicon-based photovoltaic cells, into electric energy. Further, the efficiency of the perovskite-based photovoltaic cells used by the present invention has greatly advanced or even exceeded the efficiency of the conventional silicon-based photovoltaic cells in recent years. Furthermore, the perovskite-based photovoltaic cell has the advantages of simply fabrication process, low cost, and flexibility. Besides, the indoor charger equipment can be efficiently applied to the existing indoor furniture without occupying space.
The embodiments described above are only to exemplify the present invention but not to limit the scope of the present invention. Any equivalent modification or variation according to the spirit or characteristics of the present invention is to be also included by the scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2023109216496 | Jul 2023 | CN | national |
