LEAD Intelligent Lithium-Ion Battery Manufacturing Equipment

Selection and quotation of LEAD Intelligent equipment: electrode coating and calendering machines, winding and stacking machines, cell assembly and formation lines.

Electrode and Separator Coating Machines

The slot-die coater applies cathode and anode slurry onto copper and aluminium foil, dries the electrode and rewinds it into rolls. Foil width is up to 1500 mm, continuous coating speed up to 140 m/min and coating width accuracy ±0.3 mm. A micro-gravure separator coater runs up to 160 m/min.

Foil width: max 1500 mm
Coating speed: max 140 m/min
Width accuracy: ±0.3 mm
Separator coater: max 160 m/min

Electrode Calendering and Slitting Machines

The calendering machine compacts the coated electrode with large-diameter rollers to ±1 μm thickness accuracy. Speed is up to 140 m/min, incoming electrode width 200-1400 mm and pressure up to 600 t. Rollers are replaced in 12 hours or less; slitting accuracy is ±0.3 mm.

Calendering pressure: max 600 t
Electrode width: 200-1400 mm
Thickness accuracy: ±1 μm
Roller replacement: 12 h or less

Prismatic and Cylindrical Cell Winding Machines

The winding machine for 620-2000 Ah energy storage cells winds jelly rolls at a designed linear speed of up to 5,000 mm/s, and its camera loop keeps winding overhang within ±0.5 mm. The large cylindrical cell winder runs up to 4000 mm/s and 25 PPM; the EV prismatic cell winder reaches 3000 mm/s.

Winding speed: max 5,000 mm/s
Cell capacity: 620-2000 Ah
Cylindrical cells: 25 PPM
Yield: 99.6%

Cutting and Stacking Machines

The EV and ESS cell machine combines laser tab notching, stacking and hot pressing. Vision-guided positioning accuracy is ±0.03 mm, adjacent cathode and anode alignment ±0.2 mm, and the cycle is down to 0.35 s per sheet. Filtering and dedusting keep internal cleanliness at ISO Class 6.

Cycle: from 0.35 s per sheet
Positioning: ±0.03 mm
Electrode alignment: ±0.2 mm
Cleanliness: ISO Class 6

Cell Assembly Lines: Electrolyte Filling and Helium Leak Testing

The 587 Ah energy storage cell line covers pre-heating, hot pressing, ultrasonic tab welding, lid laser welding, helium leak testing and electrolyte filling at 22 PPM with whole-line yield of at least 99%. For large aluminium-can cylindrical cells LEAD builds a 180 PPM assembly line.

Prismatic cells: 22 PPM
Cylindrical cells: 180 PPM
Helium test: 5 s or less
Filling pump: ±0.3% accuracy

Formation, Aging and Capacity Grading Systems

The modular formation and aging system handles 280-628 Ah energy storage cells and can be customized for cells above 1000 Ah. Chamber temperature uniformity is ±2 °C and discharge energy feedback efficiency is over 82%. The line covers HT soaking, vacuum formation and capacity grading.

Cell capacity: 280-628 Ah
Chamber temperature: ±2 °C
Energy feedback: over 82%
Custom design: above 1000 Ah

Choosing Equipment by Cell Production Stage

LEAD Intelligent builds equipment for every stage of lithium-ion cell production: slurry mixing, electrode coating, calendering and slitting, winding or stacking, cell assembly, formation and capacity grading.

For energy storage and EV cells the company offers prismatic, cylindrical and pouch cell solutions; a machine is selected by cell format, capacity and required line throughput.

The winding machine for 620-2000 Ah cells is designed for up to 5,000 mm/s, and the formation system handles 280-628 Ah cells.

Electrode Stage: Slurry, Coating, Calendering, Notching

The twin screw extruder mixing system, with tank and threaded components of hard alloy, prepares high solid content slurry. The slot-die coating machine coats foil up to 1500 mm wide at up to 140 m/min, and separators are coated by micro-gravure at up to 160 m/min.

The calendering and slitting machine with up to 600 t pressure compacts the electrode to ±1 μm thickness accuracy and slits it to ±0.3 mm. Laser tab notching runs at 200 m/min for a 25 mm tab height.

Cell Stage: Winding, Stacking, Assembly, Formation

LEAD winding machines cover EV prismatic cells (up to 3000 mm/s), large cylindrical cells (up to 4000 mm/s, 25 PPM) and energy storage cells (up to 5,000 mm/s). The cutting and stacking machine reaches a cycle of 0.35 s per sheet with ±0.2 mm electrode alignment.

The 587 Ah energy storage cell assembly line runs at 22 PPM, and the large aluminium-can cylindrical cell line at 180 PPM for 33/40/46/60-series cells. Formation completes the stage: HT soaking, vacuum formation and capacity grading.

About the Manufacturer

Wuxi Lead Intelligent Equipment Co., Ltd. (LEAD) was founded in 2002 in Wuxi, China, and has been listed on the ChiNext Board of the Shenzhen Stock Exchange since 2015 (300450.SZ).

Besides lithium-ion and solid-state battery equipment, the company builds photovoltaic, 3C automation, intelligent logistics, automotive line and hydrogen energy equipment.

It has 2 million square meters of R&D and manufacturing facilities, 20 overseas subsidiaries and branches, and exports to more than 25 countries and regions.

LEAD Intelligent and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of LEAD Intelligent and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.