Solar energy is one of the 21st century the most environmentally friendly and most readily available, along with the global climate warming, the energy shortage and global environmental concerns, solar cell research and the photovoltaic industry development has been national attention and support. The entire PV industry since the beginning of twentieth Century ninety's entered a period of rapid development. In recent years, due to the technical progress and the governments of many countries have introduced policies (such as Germany as early as in 2000 promulgated the matched with the whole network equally of the renewable energy Internet Pricing Method "), further accelerated the rapid development of solar cells and photovoltaic components.
Solar power generation system is a device for converting solar energy directly into electrical energy through the photoelectric effect or the chemical effect of the photovoltaic effect. Consisting of solar cell, controller, battery (Group) and inverter (if the output power is 220 V or 110 V).
Solar panel is the core of the solar power system, according to the different materials used can be divided into: silicon solar cell (monocrystalline silicon solar cells, polycrystalline silicon thin film solar cell and amorphous silicon thin film solar cell), multivariate compound thin film solar cells, polymer multilayer modified electrodes of solar cells, nano crystalline solar cell four categories. Silicon solar cells are the most widely used in the development of the technology, the technology is relatively mature and the photoelectric conversion rate is high. And multi compound thin film solar cells due to the use of less material, small weight, smooth appearance, easy installation in recent years, the rapid development momentum, great development potential.
It is worth noting, solar power generation system will also use battery (Group), its role is in the light of the photo will be solar panels to release electric energy is stored, to need to be released. At present, the use of the battery (Group) is generally lead-acid batteries, there is no doubt that the lithium battery will slowly replace lead-acid batteries.