Nickel Hydride Batteries

　　What are the basic characteristics of Nickel Hydride Batteries?

　　The basic characteristics of Nickel Hydride Batteries include volt-ampere characteristics, performance parameters, polarity, etc. The performance parameters are used to measure the performance of the battery. In addition, the types of Nickel Hydride Batteries can be divided into monocrystalline silicon Nickel Hydride Batteries, polycrystalline silicon Nickel Hydride Batteries, and crystalline silicon Nickel Hydride Batteries. Silicon Nickel Hydride Batteries, etc., then I will introduce the relevant content in detail below.

　　1. Basic characteristics of Nickel Hydride Batteries

　　1. Polarity of Nickel Hydride Batteries

　　Nickel Hydride Batteries are generally made into P+/N-type structure or N+/P-type structure. P+ and N+ represent the conductivity type of the semiconductor material of the light layer on the front of the photovoltaic cell; N and P represent the conductivity type of the semiconductor material of the back substrate of the photovoltaic cell. The electrical properties of Nickel Hydride Batteries are related to the properties of the semiconductor materials used to make the cells.

　　2. Performance parameters of Nickel Hydride Batteries

　　The performance parameters of Nickel Hydride Batteries consist of open circuit voltage, short circuit current, maximum output power, fill factor, conversion efficiency, etc. These parameters are a measure of the performance of Nickel Hydride Batteries.

　　3. Volt-ampere characteristics of Nickel Hydride Batteries

　　A P-N junction photovoltaic cell consists of a shallow P-N junction formed on the surface, a strip and finger-shaped front ohmic contact, a back ohmic contact covering the entire back surface, and an anti-reflective layer on the front. When the cell is exposed to the solar spectrum, photons with energy less than the forbidden band width Eg do not contribute to the cell output. Photons with energy greater than the bandgap width Eg will contribute energy Eg to the battery output, and energy less than Eg will be consumed in the form of heat. Therefore, in the design and manufacturing process of Nickel Hydride Batteries, the impact of this heat on battery stability, life, etc. must be considered.

　　2. Various classifications of Nickel Hydride Batteries

　　1. Monocrystalline silicon Nickel Hydride Batteries

　　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 Nickel Hydride Batteries

　　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 Nickel Hydride Batteries

　　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. 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 Nickel Hydride Batteries

　　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 produced industrially. 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.

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