Composite PE Separator Series

PE composite separators are made by combining PE separators with special fiberglass felt for battery separators using a composite process. They have good mechanical strength and vibration resistance, effectively preventing the shedding of active materials and extending battery life.

Suitable for high-vibration batteries, taxi batteries, tractor and construction machinery batteries, and power batteries.

Technical Indicators

Advantages of PE Separators

1. PE separators have an excellent microporous structure that ensures smooth electrolyte flow while preventing lead particles from depositing on their surface.

2. PE separators have excellent ductility, strength, and hardness, allowing them to be made into pouches and providing good puncture resistance.

3. PE separators have good oxidation resistance, chemical and thermal stability, effectively preventing early capacity loss in the battery.

4. PE separators have low resistance characteristics, resulting in better cold start performance; sufficiently high porosity and small pore size give them high resistance to short circuits and corrosion.

5. PE separators improve battery specific power and specific energy, increase battery life, and improve battery performance at high temperatures.

Performance Indicators of PE Separators

Separators are placed between the positive and negative plates of a battery to prevent short circuits and maintain stable electrochemical reactions. Separators are a crucial component of batteries, reducing resistance and enabling compact design. The basic functions and necessary characteristics of separators are:

① Mechanically and electrically separate the positive and negative plates;

② Allow free passage of electrons but block fine lead particles;

③ Have good diffusion properties and low electrolyte displacement;

④ Have good acid and oxidation corrosion resistance, with no harmful eluents;

⑤ Have broader characteristics suitable for different types of batteries.

Application of PE Separators in Batteries

PE separators have now partially replaced PVC separators, cellulose separators, fiberglass, and other conventional separators, occupying 100% of the US automotive battery market and over 70% of the global automotive battery market.

Conventional PE separators are widely used in the battery industry, especially in automotive batteries. The combination of PE separators with other types of separators, such as fiberglass separators and rubber separators, has opened up broader prospects for PE separators in stationary batteries and industrial batteries.

Future Prospects of PE Separators

The development needs of separators depend on the future development needs of automotive batteries. Recent trends show that automotive batteries are moving towards higher operating temperatures, higher cycle loads, and faster production efficiency. This trend translates into requirements for separators such as higher oxidation stability (especially at high temperatures), further improved puncture resistance for wider application in grid-type grids, and thinner base thickness to reduce separator internal resistance and provide greater starting current for the battery. A thinner base thickness also ensures optimal cost advantages. Reducing separator base thickness is very challenging, as it further increases the demand for oxidation stability and puncture resistance of the separator.