18650 battery 3.7v 2000mah.Classification of 18650 lithium batteries

　　The classification of 18650 lithium batteries can be classified in the following ways.

　　1. According to the practical performance of the battery, it is classified into power battery and energy battery. Energy-type batteries have the characteristics of high energy density, and the key is high energy output.

　　Power-type batteries are growing in size with the advent of electric hybrid vehicles. It requires the battery to store high kinetic energy, which can be applied to the distance of pure electric vehicles. It also has good output power characteristics and enters the hybrid mode of gasoline and electricity in low power consumption mode.

　　I also briefly explained to people: similar to marathon runners, they have physical strength, regulate large capacities, and have small charge and discharge characteristics of large currents; then the output power type is sprinters, fighting is violent, but physical strength is strong, Or small capacity runs very close.

　　2. According to the electrolyte material, lithium batteries are divided into liquid lithium batteries (lib) and polymer lithium batteries (plb). Liquid lithium batteries are used in liquid electrolyte solutions (mainly used in power-driven rechargeable batteries). This polymer can be dry or colloid, the choice for most current stage polymer electrolyte solutions. In the case of solid-state batteries, what exactly means is that both the voltage level and the electrolyte are solid.

　　3. Classification by product type: divided into: cylindrical, soft package, square. Cylindrical and square outer packaging are often made of aluminum or aluminum. The outer packaging of the soft bag is aluminum plastic film. In fact, the soft bag is also a square shape. The aluminum-plastic packaging used in the sales market is called a soft bag. Some people call the soft bag a polymer lithium battery. For cylindrical lithium-ion batteries, the model specification is generally 5-digit data. The first two digits are direct and the middle two digits are aspect ratio. The unit is millimeters. For example, the 18650 Li-Ion has a diameter of 18 mm and a height of 65 mm.

　　4. According to the electrode material: battery cathode material: lithium iron phosphate battery (lfp), lithium cobalt oxide battery (LCO), lithium manganate battery (LMO), (binary battery: lithium nickel manganese oxide/lithium nickel cobalt oxide), (Ternary: lithium nickel cobalt manganate battery (NCM), lithium nickel cobalt aluminate battery (NCA)). Anode material: lithium titanate battery (LTO), graphene battery, nanocarbon fiber battery.

　　In the sales market, the key to the graphene concept is the use of graphene-based rechargeable batteries, that is, adding graphene-based materials in polar TV series or adding graphene-based coatings on diaphragms. The sales market for lithium-nickel and magnesium-based rechargeable batteries will have no foundation.

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