What types of 18650 lithium ion battery cell are there and what are their characteristics?

　　18650 lithium ion battery cell can be divided into monocrystalline silicon 18650 lithium ion battery cell, polycrystalline silicon 18650 lithium ion battery cell, crystalline silicon 18650 lithium ion battery cell and multi-compound 18650 lithium ion battery cell; it can use solar cells to directly convert sunlight energy into electrical energy based on the principle of photovoltaic effect. The following is a detailed introduction. Types and Characteristics of 18650 lithium ion battery cell”.

　　1. Types of 18650 lithium ion battery cell

　　1. Monocrystalline silicon 18650 lithium ion battery cell

　　The photoelectric conversion efficiency of monocrystalline silicon solar cells is about 15%, with the highest reaching 24%. This is the highest photoelectric conversion efficiency among all types of solar cells at present. However, the production cost is so high that it cannot be widely used and widely used. commonly used. Since monocrystalline silicon is generally encapsulated with tempered glass and waterproof resin, it is strong and durable, with a service life of generally up to 15 years and up to 25 years.

　　2. Polycrystalline silicon 18650 lithium ion battery cell

　　The manufacturing process of polycrystalline silicon solar cells is similar to that of monocrystalline silicon solar cells, but the photoelectric conversion efficiency of polycrystalline silicon solar cells is much lower, and its photoelectric conversion efficiency is about 12%. In terms of production cost, it is cheaper than monocrystalline silicon solar cells. The material is easy to manufacture, saves power consumption, and the overall production cost is low, so it has been widely developed. In addition, the service life of polycrystalline silicon solar cells is shorter than that of monocrystalline silicon solar cells. In terms of performance-price ratio, monocrystalline silicon solar cells are slightly better.

　　3. Crystalline silicon 18650 lithium ion battery cell

　　Amorphous silicon solar cells are a new type of thin-film solar cells that appeared in 1976. They are completely different from monocrystalline silicon and polycrystalline silicon solar cells in manufacturing methods. The process is greatly simplified, silicon material consumption is very small, and power consumption is lower. Its main The advantage is that it can generate electricity even in low light conditions. However, the main problem of amorphous silicon solar cells is that the photoelectric conversion efficiency is low, the international advanced level is about 10%, and it is not stable enough. As time goes by, its conversion efficiency decays.

　　4. Multi-compound 18650 lithium ion battery cell

　　Multicomponent compound solar cells refer to solar cells that are not made of single element semiconductor materials. There are many varieties studied in various countries, and most of them have not yet been industrialized. The main ones are as follows:

　　a) Cadmium sulfide solar cells

　　b) Gallium arsenide solar cells

　　c) Copper indium selenide solar cell (new multi-band gap gradient Cu (In, Ga) Se2 thin film solar cell.

　　2. Characteristics of 18650 lithium ion battery cell

　　1. Photovoltaic power generation is based on the principle of photovoltaic effect, using solar cells to directly convert sunlight energy into electrical energy.

　　2. Whether used independently or connected to the grid for power generation, the photovoltaic power generation system mainly consists of three parts: solar panels (components), controllers and inverters. They are mainly composed of electronic components and do not involve mechanical parts. Therefore, photovoltaic The power generation equipment is extremely refined, reliable, stable, long-lasting, and easy to install and maintain.

　　3. Theoretically, photovoltaic power generation technology can be used in any situation that requires power, from spacecrafts to household power supplies, from megawatt power stations to toys as small as toys. Photovoltaic power sources are everywhere.

　　The most basic component of solar photovoltaic power generation is solar cells (chips), including monocrystalline silicon, polycrystalline silicon, amorphous silicon and thin film cells. 4. Currently, monocrystalline and polycrystalline batteries are used the most, and amorphous batteries are used in some small systems and calculator auxiliary power supplies. The efficiency of domestic crystalline silicon cells is about 10 to 13%, and the efficiency of similar foreign products is about 12 to 14%. A solar panel consisting of one or more solar cells is called a photovoltaic module.

　　The above is an introduction to "Types and Characteristics of 18650 lithium ion battery cell". If you have any questions, please feel free to contact us.

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