18650 lithium battery application and classification , bear talk about lithium batteries

The excellent performance of lithium secondary battery makes it widely used in the energy battery industry. 18650 pack builder With the development of lithium secondary battery technology, it has been widely used in our daily life, rechargeable batteries for various purposes are more and more favored by consumers. Pay attention to the energy battery industry, fully understand the battery, and then let us do "for my use", the current 18650 lithium battery has a certain application in the following aspects.

Energy storage

Mainly used in base station power supply, battery manufacturing machine clean energy storage, power grid energy storage, home optical storage system, etc.

Power class

It mainly refers to electric urban traffic management tools, li ion battery construction electric bicycles, and new energy development vehicles.

Digital

Mobile phones, tablets, laptops, electric toys, MP3/MP4, headphones, charging baby, airplane model, mobile phone power supply, etc.

From the perspective of classification, the classification of 18650 lithium batteries can be classified in the following ways.

1. Sort by battery performance

Power batteries and energy batteries. Energy batteries are characterized by high energy density and are mainly used for high energy output. The power battery is characterized by high power density and is mainly used for instantaneous high-power output and output batteries. Power and energy lithium batteries are coming with the advent of plug-in hybrid electric vehicles. It requires the battery to store high energy, can support a certain distance of pure electric driving, but also has good power characteristics, low power into the hybrid mode.

Simple analysis and understanding, energy type is similar to marathon runners, to have endurance, that is, we require high capacity, the high current through discharge technology performance design requirements are not high; So for the power type is to improve the sprinter, fight is the outbreak, but the endurance must also have, otherwise the capacity is too small to run far.

2. according to the electrolyte material

Lithium-ion power batteries can be divided into different liquid lithium-ion batteries (LiBs) and polymer as lithium-ion batteries (PLBS).

Liquid lithium-ion batteries use liquid electrolyte (most of which is currently used in power batteries). Polymer lithium-ion batteries are replaced by solid polymer electrolytes, which can be "dry" or "colloidal." At present, most polymer gel electrolytes are used. Regarding solid-state batteries, strictly means that the electrodes and electrolytes are solid.

3. according to product appearance classification

Divided into: cylindrical, flexible packaging, square.

Cylindrical and square outer packaging is mostly steel shell or aluminum shell. Flexible packaging is made of aluminum-plastic film. The soft bag is also square. In the market, it is customary to call the aluminum-plastic film soft bag, and some people call the soft bag battery polymer battery.

For a cylindrical and lithium-ion power battery, its model number is generally 5 digits. The first two Chinese numbers are the diameter of the battery, and the middle two student numbers 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. according to the pole material classification

Cathode material: lithium iron phosphate battery, lithium cobalt oxide, lithium manganese oxide battery (binary battery: lithium nickel manganese oxide/lithium nickel cobalt oxide), ternary battery: lithium nickel cobalt manganese oxide battery (NCM), lithium nickel cobalt aluminate battery (NCA).

Anode materials: Lithium titanate battery (LTO), graphene battery, carbon nanofiber battery.

The concept of graphene on the market mainly refers to graphene-based batteries, that is, graphene paste is added to the plate, or graphene coating is added to the diaphragm. The market for lithium nickel and magnesium based batteries is virtually non-existent.

18650 pack lithium-ion batteries clarification

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