li ion 18650 battery pack Manufacturing

　　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 can be classified into power type battery and energy type battery. Energy-type batteries have the characteristics of high energy density, and the key is high energy output.

　　Power-type batteries have grown in size with the advent of electric hybrids. It requires the battery to store high kinetic energy, which can be applied to the distance of pure electric vehicles, and 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 a marathon runner, with physical strength, it is a large current that regulates a large capacity, and the charge and discharge characteristics are not great; then the output power type is a sprinter, and the battle is violent, but the physical strength is strong, Or run very close with a small capacity.

　　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 colloidal, the choice of most current stage polymer electrolyte solutions. In the case of solid-state batteries, the exact meaning is that both the electrical level and the electrolyte are solid.

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

　　4. According to the electrode material: battery positive electrode material: lithium iron phosphate battery (lfp), lithium cobalt oxide battery (LCO), lithium manganese oxide battery (LMO), (binary battery: lithium nickel manganese oxide/lithium nickel cobalt oxide), (Ternary: nickel cobalt lithium manganese oxide battery (NCM), nickel cobalt lithium aluminate battery (NCA)). Anode materials: Lithium titanate battery (LTO), graphene battery, nano-carbon fiber battery.

　　In the market, the key to the concept of graphene is the use of graphene-based rechargeable batteries, that is, adding graphene-based materials to polar TVs or adding graphene-based coatings to diaphragms. There will be no foundation for the sales market of lithium-nickel and magnesium-based rechargeable batteries.