Semi-Automatic Battery Electrode Winding Machine

1. Equipment Description:

This equipment is used for the production of cylindrical lithium-ion battery cells and is one of the key devices in battery manufacturing. The process is as follows: The cathode and anode sheets and separator—prepared by the slitting machine—are actively unwound, pass through tension control, dust removal, web guiding, de-ironing, separator static elimination, quality inspection, and are fed via guiding rollers and electrode feeding mechanisms into the winding section. After winding is completed, the cell is removed by a robotic arm, undergoes short circuit detection, is counted by a photoelectric counter, and transported via a conveyor to the collection platform. If defective cells are detected during processing, they are rejected and sent to the defect collection box.

 

2. Incoming Material Requirements:

Item	Specification
Cathode and Anode Sheets
Slitting Width Tolerance	Within ±0.1 mm
Coating Width Deviation	Within 3%
Waviness, Warping, Curling	No edge waviness or curling; snake-like bending deviation < 0.3 mm/m
Tab Connection	Red or green tape for detection; single roll ejection
Final Marking	Remaining material on original roll must signal end; uncoated terminal > 1 m
Separator Film
Slitting Width Tolerance	Within ±0.05 mm
Waviness, Curling, Skirt Shape	Visually screened
Final Marking	Green or black marking signals end of material

 

3. Technical Specifications & Functions:

Category	Parameter	Value
Applicable Material	Electrode Width (excluding tabs)	9–60 mm
	Tab Exposure Length	8–25 mm
	Electrode Unit Length	150–500 mm
	Electrode Unwinding Diameter	φ400 mm
	Winding Needle Diameter	1.8–6 mm (initial: 3 mm)
	Separator Unwinding Diameter	φ300 mm
	Separator Width	10–65 mm
	Winding Diameter	φ6–20 mm
	Unwinding Core Inner Diameter	φ76.2 mm
	Termination Tape Wraps	0.5–1.5 turns
	Termination Tape Width	20–50 mm
	Tape Roll Inner Diameter	φ76.2 mm
Winding Mode	Tab Configuration	One cathode & one anode tab
	Tab Insertion Order	Anode-first or cathode-first, freely settable

 

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:

Item	Parameter
Cutting Burrs	Lateral: <30μm, Longitudinal: <15μm
Alignment Accuracy	Cathode/Anode: ≤±0.5 mm, Anode/Separator: ≤±0.5 mm
Cell Diameter Tolerance	≤±0.20 mm
Pass Rate	≥99.0% (non-equipment faults excluded)
Uptime Rate	≥95% (excluding non-equipment downtime)
Productivity	5–12 PPM (φ10, 250 mm electrode)
Electrode Tension	20 N adjustable (touch/manual)
Separator Tension	18 N adjustable (touch/manual)

 

6. Installation & Commissioning Requirements:

Item	Specification
Air Source Pressure	0.5 MPa
Air Flow	100 L/min
Power Supply	3-phase 380V, 50 Hz
Power	10 kW
Weight	2000 kg
Ambient Temp	-40°C to +45°C
Humidity	≤60% RH
Dimensions	2800 mm (L) × 1700 mm (H) × 1350 mm (W)
Color	Per customer request

  

 

7. Major Component Specifications:

No.	Name	Brand	Origin
1	PLC	INOVANCE	—
2	Detection Parts	Omron/Keyence	Japan
3	Motor	TUNGLEE	Taiwan
4	Servo Motor	INOVANCE	—
5	Pneumatic Parts	SMC	Japan
6	Bearings	NSK	Japan
7	HMI	WEINVIEW TK6102	—

 

8. Spare Parts Supplied with Machine:

Name	Specification	Unit	Qty	Remarks
Winding Needle	3.0	Set	2	3 included, 3 additional
Separator Knife	—	Pc	1	1 included, 1 additional
Magnetic Sensor	—	Pc	2
Toolbox	—	Pc	1
Allen Wrench Set	1.5–10 mm	Set	1
Phillips Screwdriver	—	Pc	1
Long Nose Pliers	—	Pc	1
Adjustable Wrench	250 mm	Pc	1
Open Wrench	5.5–7 mm	Pc	1
Open Wrench	8–10 mm	Pc	1
Open Wrench	12–14 mm	Pc	1
Open Wrench	14–17 mm	Pc	1
Solenoid Valve	4V-110-06	Pc	1
Regulating Valve	SCW-045	Pc	2