Products Description
This advanced equipment is specifically designed for high-precision coating of lithium-ion battery electrodes, including both cathodes and anodes. The system comprises several key components: an unwinding module, a precision coating head, a temperature-controlled drying oven, a traction unit, a winding mechanism, and an integrated electrical control system. Its primary function is to uniformly apply the prepared electrode slurry onto the substrate with exceptional consistency, maintaining strict control over critical parameters such as coating thickness and weight within specified process tolerances. Following the coating process, the material undergoes precise drying treatment before being neatly wound, ensuring optimal preparation for subsequent manufacturing stages in the battery production process.
Technical Parameters
Base material parameters
| Item | Cathode | Anode |
| Base material | Al foil | Cu foil |
| Width(mm) | 180～320 | 180-320 |
| Thickness(µm) | 8～15 | 6～12 |
| Remark：The base material used for acceptance should not have any looseness, uneven thickness and weight, surface oil stains or other phenomena that affect the performance of the tape and coating. | ||
Slurry parameters
| Item | Cathode | Anode |
| Material | LFP, NMC ,etc | Graphite |
| Solvent | NMP | DI-Water |
| Solids（wt%） | 52～65(LFP)60~76(NMC) | 42～50 |
| Specific gravity of slurry（g/cm3） | 1.5～2.5 | 1.0～2.0 |
| Viscosity（mPa.s） | 3500～12000 | 2500～8000 |
| Note:1) Solid content of the same batch: fluctuation ≤±0.5%;2) The same batch of slurry viscosity: fluctuation ≤±500mPa.s, 22-30 range of arbitrary temperature fluctuation ±2℃;At the time of acceptance, positive slurry: one; Negative slurry: one; | ||
Coating parameters
| Item | Cathode | Anode |
| Coating mode | Continuous, Intermittent,Stripe coating | Continuous, Intermittent,Stripe coating |
| Coating width(mm) | Max 300 | Max 300 |
| Dry thickness of single-sided coating（µm） | 70～350 | 60～350 |
| Single coating weight(g/㎡) | 30～250 | 20～200 |
| Coating speed(m/min) | 0.1-0.5 | 0.1-0.5 |
| Explanation: The coating speed is related to product characteristics (material system, coating thickness, solid content, temperature), and the maximum coating speed given in the table cannot meet special coating process requirements; | ||
Equipment specifications and parameters
| No | Item | Content |
| 1. | Roll surface width | 400mm |
| 2. | Mechanical speed (unloaded) | Max.3m/min |
| 3. | Unwinding specifications | Roll diameter: Max φ 300mm；Load bearing: Max.100kg;Roll specification: inner diameter of 3 inches, approximately 76.2mm, length of 400 ± 3mmRoll material: metal, ABS plastic |
| 4. | Winding specifications | Roll diameter: Max φ 300mm；Load bearing: Max.100kg;Roll specification: inner diameter of 3 inches, approximately 76.2mm, length of 400 ± 3mmRoll material: metal, ABS plastic |
| 5. | Oven heating method | Electrical heating |
| 6. | Oven structure | 1 section×1.2m/section=1.2m，single layer； |
| 7. | Oven temperature | Max.140℃ |
Main components of the equipment：
| Name | QTY | Remark |
| Unwinding unit | 1set | Single station, automatic unwinding, manual roll changing; |
| Coating unit | 1set | |
| Coating feeding unit | 1set | Including mixing drum, pump, filter, valve, etc |
| Oven unit | 1set | Single layer，1 section×1.2m=1.2m； |
| Traction unit | 1set | |
| Winding unit | 1set | Single station, automatic unwinding, manual roll changing; |
| Controller | 1set |
