Fully Automatic Winding Machine for Lithium-ion Cylindrical Cell Production 

1. Equipment Description:

This equipment is applied in the production of cylindrical lithium-ion battery cells and ranks among the key devices in battery manufacturing. Its process is as follows: The cathode sheets, anode sheets, and separator, which have been prepared by the slitting machine, undergo active unwinding. Then they go through tension control, dust removal, web guiding, iron removal, separator static elimination, and quality inspection. After that, they are fed into the winding section via guiding rollers and electrode feeding mechanisms. Once winding is finished, the cell is taken out by a robotic arm, subjected to short circuit detection, counted by a photoelectric counter, and conveyed to the collection platform via a conveyor. If defective cells are identified during the processing, they will be rejected and sent to the defect collection box.

2. Incoming Material Requirements:

3. Technical Specifications & Functions:

Function Description:

l Fault alarms, parameter & fault logs, operation history

l Lifecycle tracking with alerts, auto-stop

l USB export for production data

l Three-level password protection

l MES interface reserved

4. Equipment Structure Overview:

Electrode Feeding System (Cathode/Anode)

l Unwinding Stand: Single-arm, dual-support, servo-driven with auto-guiding and pneumatic expansion

l Tension Control: Potentiometer with swing arm; adjustable tension

l Dust Removal: Dual-brush + vacuum extraction system

l Web Guiding: Optical sensors and correction actuators

l Feeding Unit: Servo-driven, front/rear de-ironing

Separator Feeding System

l Same structure as electrode feeding

l Includes static elimination and web guiding

Winding Section

l Three-needle, three-position setup

l Pneumatic needle shifting

l Servo-driven rotation, closed-loop angle/speed control

l Scissor-type electrode cutting with dust removal

l Pneumatic tooth-blade separator and tape cutting

l Pneumatic robotic arm for cell discharge

l Short-circuit detection (100–500V DC, 1–9μA)

Tape Feeding

l Passive unwind

l Cylinder-driven unrolling and pressing

l V-blade cutting

Cell Transfer System

l Intermittent belt conveyor, synchronized with machine cycle

l Separates good/defective cells

l Buffer zone ≥8 cells

Machine Frame

l Welded 50×100 steel structure, stress-relieved

l Double-sided ground wall panels

l Aluminum guide rollers, hard anodized, ≤30μm runout

l Left-side electric cabinet, separated zones for strong/weak current

l Fault display via touch screen & protected switches

l Alarm functions: material-end, break, short circuit, missing tabs, etc.

l Rejects defective cells automatically

l Cell counting and length measuring, alarms if ≥3 consecutive anomalies

l Equipped with safety guards

5. Equipment Technical Parameters:

6. Installation & Commissioning Requirements:

7. Major Component Specifications:

8. Spare Parts Supplied with Machine: