Detailed classification of 18650 lithium batteries

18650 lithium battery processing must have a protection circuit to guard against overcharge and overdischarge of the battery. Of course, this is a must for lithium batteries. This is also a common drawback of lithium batteries, because the materials used in lithium batteries are basically lithium cobalt oxide materials, and lithium cobalt oxide materials cannot be discharged at high currents and are safe. Inferior, from the perspective of classification, the classification of 18650 lithium batteries can be classified in the following way. 1. According to the practical performance of the battery, power battery and energy battery are classified. Energy batteries are characterized by high energy density and are mainly used for high energy output; power batteries are characterized by high power density and are mainly used for batteries with instantaneous high power output and output. The power energy lithium battery is accompanied by the emergence of plug-in hybrid vehicles. It requires the battery to store high energy, which can support pure electric driving for a certain distance, but also has good power characteristics, and enters the hybrid mode when the battery is low. Simply understand, the energy type is similar to a marathon runner. To have stamina, it requires high capacity and does not require high current discharge performance; then the power type is a sprinter, fighting for bursting power, but endurance is required, otherwise the capacity is too You can't run far when you are young. 2. According to the electrolyte material, lithium batteries are divided into liquid lithium batteries (LIB) and polymer lithium batteries (PLB). Liquid lithium batteries use liquid electrolytes (currently power batteries are mostly of this type). Polymer lithium batteries are replaced by solid polymer electrolytes, which can be dry or colloidal, and most of them currently use polymer gel electrolytes. Regarding solid-state batteries, in a strict sense it means that the electrodes and electrolyte are both solid. 3. According to the product appearance classification, it is divided into: cylinder, soft bag and square. Cylindrical and square outer packagings are mostly steel shells or aluminum shells. The outer packaging of the soft pack is aluminum-plastic film. In fact, the soft pack is also a square shape. In the market, it is customary to call the aluminum-plastic film packaging as a soft pack. Some people call the soft pack battery a polymer battery. Regarding cylindrical lithium batteries, their model is generally 5 digits. The first two digits are the diameter of the battery, and the middle two digits are the height of the battery. The unit is millimeters. For example, the 18650 lithium battery has a diameter of 18 mm and a height of 65 mm. 4. Classification of cathode materials by pole piece 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 Manganese Lithium Battery (NCM), Nickel Cobalt Aluminum Oxide Battery (NCA)). Anode material: lithium titanate battery (LTO), graphene battery, nano carbon fiber battery. Regarding the concept of graphene on the market, it mainly refers to graphene-based batteries, that is, adding graphene slurry to the pole piece or adding a graphene coating to the diaphragm. Lithium nickelate and magnesium-based batteries basically do not exist in the market. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the reasons for the explosion history of 18650 lithium batteries?