The main uses of 18650 battery lithium ion 2200mah separators:

　　The diaphragm is a key component of the 18650 battery lithium ion 2200mah and is located at the positive and negative centers of the rechargeable battery. The characteristics of the diaphragm constitute the structure, internal resistance, etc. of the battery, affecting the size, circulation and safety of the battery.

　　The requirements for separators for lithium batteries include:

　　(1) It has the dielectric strength of electronic devices to ensure the protection of positive and negative mechanical equipment;

　　(2) It has a certain diameter and pores to ensure the low resistance and high positive ion conductivity of the lithium-ion battery, which has sufficient organic chemical performance and photocatalytic reliability for the corrosion resistance of the lithium-ion battery electrolyte.

　　(4) The 18650 battery lithium ion 2200mah electrolyte has good wettability, strong moisture retention and water return performance;

　　(5) The reliability of structural mechanics is high, including compressive strength and tensile strength, but the thickness of the thin layer is as small as possible;

　　(6) Reliability and smoothness of indoor space;

　　(7) Good heat resistance and automatic shutdown maintenance;

　　(8) If the shrinkage rate is small, it will cause short circuit failure and the battery charging heat cannot be controlled. In addition, power lithium batteries generally use composite bags with higher separator adjustment.

　　Classification of lithium-ion battery diaphragms:

　　According to the different physical and chemical properties of lithium batteries, 18650 battery lithium ion 2200mah separators can be divided into: textile membranes, non-woven fabrics (non-woven fabrics), microporous membranes, composite bags, separator paper, rolled membranes, etc. Although there are various types, commercial lithium-ion battery separator materials are currently the key choices for high-voltage polyethylene and polypropylene microporous membranes.

　　18650 battery lithium ion 2200mah separator process

　　At this stage, the key production methods for 18650 battery lithium ion 2200mah diaphragms are wet and dry. Use wet separated phase chromatography or thermally induced phase chromatography to mix liquid hydrocarbons or small molecule water chemicals with polyolefin epoxy resin. After melting, a homogeneous compound is produced, which separates the pulse damper, suppresses the pulse damper, and links the molecular structure Heated to a temperature close to . In the dry process, polyolefin epoxy resin, extrusion and blown films are melted into a crystalline polymer plastic film, which is then crystallized into a solution and quenched to obtain a high-width ratio double-layer structure.

　　Wet and dry processing technology has advantages and disadvantages. Among them, the plastic film has small diameter, uniformity, thin film, large engineering investment, complex processing technology, large air pollution, dry processing technology is simple, high added value, green and environmentally friendly, but the diameter and porosity It is not easy to operate and the product cannot be made thin.

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