Power Battery Separator

Today, when the world focuses on the development of new energy industries such as electric vehicles and energy storage batteries, lithium batteries have received higher attention as recognized ideal energy storage components. China has also invested huge funds and policy support in the field of power batteries, and has emerged BYD, BAK, Lishen, AVIC lithium battery and other eye-catching backbone enterprises in the global battery industry. Cathode materials, negative electrode materials, battery separators, electrolytes are the four most important raw materials for lithium batteries, lithium battery separators due to large investment risks, high technical thresholds, has not been able to achieve domestic large-scale production, has become a bottleneck restricting the development of China's lithium battery industry, especially in the field of power lithium-ion batteries with higher requirements for safety and consistency, but also China's insurmountable obstacles from lithium battery production countries to lithium battery production powers.
The main production process of lithium battery separator can be divided into two categories: dry process and wet process. The vehicle power battery has large capacity and high safety requirements, which also requires the separator to have higher strength, liquid retention capacity and safe temperature. The dry process can be in the form of multi-layer composite, this kind of separator has many advantages such as structural safety, uniform porosity, good air permeability, good high temperature resistance, etc., fully meets the strict requirements of power lithium batteries, many power battery manufacturers at home and abroad have recognized the separator of this process is the application direction of power lithium batteries.