Means the actual conversion rate after decay. For example, the solar radiation power per square is 1000W. The panel conversion rate is 16%, and the panel attenuation is 5% (that is, the maximum conversion rate of the panel is 95%) = 1000 W*16%*95%=the final power generation quantity.
Solar cell is a kind of optoelectronic semiconductor sheet that uses sunlight to directly generate electricity. It is also called a “solar chip” or “photovoltaic cell”. which meets certain lighting conditions, it can instantly output voltage and generate current when there is a loop. In physics, it is called solar photovoltaic (photovoltaic, abbreviated PV), or photovoltaic for short.
Solar cells are devices that directly convert light energy into electrical energyue by photoelectric effect or photochemical effect. Crystalline silicon solar cells that work with the photovoltaic effect are the most widespread, while thin-film cells that work with the photochemical effect are still in their infancy.
Data show that in 2012, Chinese solar cells continued to maintain their advantages in efficiency and cost, and their international competitiveness became stronger and stronger.
With the continued development of the solar cell industry, internal competition is also intensifying. Mergers, acquisitions, integrations and capital transactions among large solar cell companies are becoming more common. more attention to the industry. Market research, especially in-depth research on the industry development environment and product buyers. For this reason, a large number of exMany domestic solar cell brands have rapidly emerged and gradually become leaders in the solar cell industry.
Crystalline silicon solar cells sold on the market have a maximum photoelectric conversion efficiency of 17% and a module conversion efficiency of about 15%.
Solar panel principle
Sunlight shines on the P-N junction of the semiconductor to form new hole-electron pairs. Under the action of the electric field of the P-N junction, the holes flow from the N region towards. In zone P, electrons flow from zone P to zone N and a current is formed once the circuit is connected. This is how photovoltaic solar cells work.
1. Solar power generation methods
There are two solar power generation methods: one is the light-heat-electricity conversion method and the other is the condirect light-electricity version. method.
(1) The light-heat-electricity conversion method uses thermal energy generated by solar radiation to produce electricity. Generally, a solar collector converts the absorbed thermal energy into steam as the working fluid and then drives it away. a steam turbine to produce electricity. The first process is a light-heat conversion process; the second process is a heat-electricity conversion process, which is the same as ordinary thermal power generation. The disadvantages of solar thermal power generation are that its efficiency is very low and its cost is high. Its investment is estimated to be at least higher than that of ordinary thermal power generation. The power plant is 5-10 times more expensive. A 1,000 MW solar thermal power plant requires an investment of 2 to 2.5 billion US dollars. investAverage cost for 1 kW is 2,000-2,500 US dollars. Therefore, currently only small-scaleIt is used on special occasions, but large-scale use is not economically profitable and cannot compete with ordinary thermal or nuclear power plants.
(2) Direct light-to-electricity conversion method This method uses the photoelectric effect to directly convert solar radiation energy into electrical energy. The basic device for converting light into electricity is the solar cell. A solar cell is a device that directly converts solar energy into electrical energy through the photovoltaic effect. When the sun shines on the photodiode, the photodiode converts light energy from the sun into electrical energy, producing current. When many batteries are connected in series or parallel, a solar cell array withc a relatively large output power can be formed. Solar cells are a promising new energy source with three major advantages: solar cells have a long lifespan and can be invested once and used for a long time as long as the sun exists, they are different from production thermal energy; and nuclear energy production. In comparison, solar cells will not cause environmental pollution; Solar cells can be used in both large, medium and small sizes, ranging from a medium-sized power plant with a million kilowatts to a solar battery for a household. uniquely, which is unmatched by other power sources.
Battery board raw materials: glass, EVA, battery sheets, aluminum alloy shells, tin-plated copper sheets, brackets stainless steel, batteries, etc.