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Dry Process Lithium Battery Separator Production Line

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Dry Process Lithium Battery Separator Production Line

The main function of lithium battery separators is to separate the positive and negative electrodes of the battery, preventing short circuits caused by contact between the two electrodes. The micropores in the film allow lithium ions to pass through, forming a charging and discharging circuit. The separator is a core and crucial material in lithium batteries, and it is also the most technologically challenging and high-value-added material in lithium batteries. Its performance determines the interface structure, internal resistance, battery capacity, lifespan and safety performance of the battery.

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Product Description

An Overview of the Battery Electrolyte Separator Laminating Film Production Line

The lithium battery separator extrusion production line model is HD/LY1700-3-PP. The products are used for manufacturing dry-process lithium battery separators. The raw material is PP, with a roll surface width of 1700 and a film thickness of 10 to 35 μm.

The main unit adopts a double extrusion structure in the form of ABA membrane layers and enters the three-layer internal composite automatic mold. It uses six-roll extrusion, cooling and shaping, and is equipped with a negative pressure vacuum box and imported edge-locking machine device.

From the continuous forming process to the double station winding process, all adopt a low-tension design.

The lithium battery separator is used between the positive and negative electrodes inside the battery to ensure the passage of lithium ions while hindering the transmission of electrons. The performance of the separator determines the interface structure and internal resistance of the battery, directly affecting the capacity, cycle life and safety performance of the battery. A good separator plays an important role in improving the comprehensive performance of high-capacity batteries.

The production line composition is as follows:

1.Plastic extrusion system

2. Extrusion and Cooling System

3. Lamination Film Thickness Measurement System

4. Traction and fully automatic winding system

5. Electrical Control System

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