Semi-Automatic Winding Machine for Cylindrical Battery 

I. Equipment Function Description

This machine is mainly used for precision winding of cylindrical lithium-ion battery cells.

Process: The operator manually feeds the positive and negative electrode sheets into the winding section. The sheets are interleaved with the separator and wound according to process requirements. The machine then automatically applies termination tape and automatically discharges the wound cell.

II. Equipment Functions & Features

1. Single-needle through-shaft winding structure.

2. Manual electrode loading → automatic winding → automatic needle change → automatic termination-tape application → automatic discharge.

3. Termination tape applied horizontally (perpendicular to electrode tabs); flat, accurately positioned, does not tension the cell; stable and reliable.

4. Winding-needle speed adjustable.

5. Dual separator rolls with active unwinding; proximity-switch tension control enables smooth automatic adjustment; upper & lower tension adjustable.

6. Separator wrap-out finish.

7. Finished cells are free of damage, core-pulling, or electrode misalignment.

8. Easy operation; quick specification changeover.

III. Process Flow

The machine meets cylindrical-cell winding standards (separator fully wraps anode; anode wraps cathode).

1. Separator pre-winding — toothed-blade method saves separator length.

2. Feed anode manually → Feed cathode manually.

3. Winding.

4. Work-position transfer.

5. Separator cutting → termination-tape application → cell discharge.

 

Dimensional Tolerances (mm)

	W	D	L
Tolerance	< 0.5	< 0.3	< 1000

 

 

IV. Main Assembly

· The machine consists of winding units, positiontransfer unit, separatorunwinding units, electrodeguide units, automatic feeding units, tapeapplication unit, discharge unit, and control system.

· Winding units (2 sets): singlehead throughshaft design ensures precision; needles can be replaced easily.

· Positiontransfer unit (1 set): switches between winding station and taping station.

· Separatorunwinding units (2 sets): active unwinding with pneumatic tension control.

· Electrodeguide units (2 sets): singleside adjustable, easy finetuning.

· Tapeapplication & discharge unit (1 set).

· Automatic feeding units (2 sets):

· Operator places sheets on the feed plate; cylinders position them.

· A cylinder pushes the sheet along a guide rail to the winding point.

· During winding, cylinders press the electrodes to ensure uniform pressure.

· Cylinder feeding guarantees identical sheet position and pressure, ensuring consistent tab location, thickness, and sheet length (assuming material consistency).

V. Technical Standards

1. Separator width: 3 – 10 mm  Winding needle: ∮1.2-∮4.0mm. Customized according to customer requirements.Electrode width: 2.5-8mm

2. Material Specifications (unit: mm)

Material	Length	Width	Thickness	Inner Ø	Outer Ø
Cathode sheet	40 – 800	2.5 – 8	0.1 – 0.2	—	—
Anode sheet	40 – 800	2.5 – 8	0.1 – 0.2	—	—
Separator (roll)	—	3 – 10	0.010 – 0.045	76.2	250
Termination tape (roll)	—	3 – 9	0.01 – 0.035	76.2	150

3. Applicable battery cell outer diameter (∮6mm-∮20mm)

4. Capacity: 6 – 15 pcs/min (depends on sheet dimensions).

5. Winding Accuracy (with materials meeting conditions below):

· Electrodewidth error ≤ ±0.2 mm

· Electrode “S”bend ≤ ±1 mm / 500 mm

· Separatorroll taper ≤ ±0.2 mm

· Achievable precision:

o Separator alignment ≤ ±0.5 mm

o Electrode alignment ≤ ±0.5 mm

o Finished crosssection alignment ≤ ±0.5 mm (anode wraps cathode, separator wraps anode)

6. Yield: ≥ 98 % (non-equipment factors excluded)

VI. General Specifications

Item	Specification	Remarks
Power supply	AC 220 V, 1.5 kVA, 50 Hz
Compressed air	0.4 – 0.6 MPa
Rated capacity	8 pcs/min
Weight	≈ 500 kg
Dimensions	1660 × 1300 × 1570 mm (L×W×H)	Electrode‑tray overhang not included
Winding needle	∮1.2mm-∮4.0mm	One set supplied (others per customer)
Frame & mounting plate	1 set
Winding assembly	1 set
Electrode-feeding unit	2 sets
Separator-feeding unit	2 sets
Tape-application unit	1 set
PLC	Panasonic	AFRX-C60T
Touchscreen	MCGS	7-inch true-color
Winding motor	Panasonic / Lishan	servo (hybrid stepper)
Tension motor	YANKONG / Lishan	Stepper
Sensors	Panasonic / JYC
Pneumatics	AIRTAC / XINGZHEN / Airtac
Main switch	CHINT – leakage-protection breaker
Alarm system	Fault stop, built-in prompts, one-key reset
Operation manual	1 set
Spare-parts kit	1 set (see delivery list)