Square Battery Semi-auto Winder Machine for Lithium Battery Electrode Sheet and Separator Winding

Square Battery Semi-auto Winder Machine for Lithium Battery Electrode Sheet and Separator Winding

Introduction

This machine is mainly used for precision winding of square lithium-ion battery cells. The working process is as follows: manually introduce the positive and negative plates into the winding part, separate them from the separator, wind according to the process requirements, automatically paste the termination tape, and automatically unload the battery.

Features

1. Adopt double-rolling needle structure.

2. Manual introduction of pole pieces, automatic winding, automatic needle change, automatic tape termination and automatic blanking;

3. The tape is applied longitudinally (the end tape is parallel to the lugs), the tape is flat, and the position of the tape can be precisely controlled and the battery core will not be tightened; the tape is stable and reliable;

4. The winding speed of the winding needle is adjustable;

5. Two separators are automatically unwinded, encoder speed control technology, high-precision air proportional valve controls the tension to be constant, and the tension can be automatically and smoothly adjusted during the winding process;

(Tension control as shown in the figure below)

6. With electrode sheet dust removal device;

7. Electrode sheet outsourcing or separator outsourcing and finishing;

8. The rolled out battery core has no damage, core pulling and electrode sheet dislocation.

9. Easy to operate, simple and quick to adjust and change specifications;

Process

This equipment meets the process standard of square lithium-ion battery winding: that is, the diaphragm completely wraps the negative electrode sheet, and the negative electrode sheet wraps the positive electrode sheet.

The process flow is as follows:

1. Separator pre-coiling: The process of cutting the separator with a heated welding tooth knife can save the length of the pre-coiled separator and avoid the drawing of the separator and the appearance of the battery.

2. Roll into the negative electrode: manually guide the negative electrode sheet into the winding part; Roll into the positive electrode: manually guide the positive electrode sheet into the winding part;

3. Winding;

4. Turn the turntable to transfer stations;

5. Separator cut off, paste termination glue and blanking.

Main components

1. This equipment is composed of winding device, shifting device, diaphragm unwinding device, electrode sheet guide device, gluing device, blanking device and control system.

2. Winding device (two sets): It is composed of staggered winding needles to ensure winding accuracy and easy to replace winding needles;

3. Station shifting device (one set): used for the conversion of winding station and glue station;

4. Separator unwinding device (two sets): automatic unwinding air pressure adjustment control of the separator material roll;

5. Electrode sheet guide device (two sets): unilateral adjustment, easy to adjust;

6. Gluing and blanking device (one set)

Technical parameter

1. Diaphragm width: 35-160MM

Rolling needle specifications: 15-55mm 50-100mm

Electrode sheet width: 33-158mm

2. Material specifications (unit: mm)

3. Equipment capacity: 5~8 pcs/min (according to the width of the winding needle, the length/width of the electrode sheet)

4. Winding accuracy;

When ensuring that the electrode sheet meets the following conditions:

The width error of the electrode sheet is less than ±0.2mm; the "S" bending error of the electrode sheet is less than ±1mm/500mm;

The tower shape error of the diaphragm material roll is less than ±0.2mm;

The winding accuracy can meet:

Separator alignment error is less than ±0.5mm; electrode sheet alignment error is less than ±0.5mm;

It can realize the negative electrode package positive electrode, the separator package negative electrode, the alignment of the finished product section is ±0.5mm

5. Qualification rate: ≥98% (except for non-equipment factors)

Specification