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Coating function
Suitable system: NCM, LFP, LCO, LMO, Graphite, Silicon carbon and other systems battery coating
Coating method: Continuous and intermittent coating (Transfer coating machine)
Oven section: 1m/section
Coating speed: 0~0.5m/min (Depending on the drying state)
Base material thickness: Al foil : 8～30um, Cu foil : 8～30um
Roller width: 330mm
Effective coating width: ≤280mm
Coating roller: Φ120mm
Squeegee roller: Φ80mm
Coating accuracy: ±3um
Weight accuracy of double-sided coating (mg/cm2): Coating center value ±1.0%
Suitable for slurry viscosity: 2000~12000 (mPas)
Single side coating dry thickness range: 20-200μm
Solvent properties
Oily solvent
NMP(s.g=1.033,b.p=204℃)
Aqueous solvent
H2O/NMP(s.g=1.000,b.p=100℃)
Suitable for solid content range: 20~85%
Coating size accuracy (mm): L≤±1, W≤±0.5 (L: length direction, W: width direction)
*Introduction to the structure of coating parts：
1. Integral unwinding, machine head mechanism：
Over roller installation structure: Steel frame firmly installed
Over roller surface treatment: Surface oxidation of metal aluminum roll
Tension control system: Automatic control of constant tension, tension range 0 ~ 50N, servo motor control
Correction method: Automatic EPC control,Stroke 50mm
Feeding Unwinding material method
The material roll is fixed by a 3-inch inflatable shaft；
Unwinding single air expansion shaft
Maximum unwinding diameter: Ф250mm
Maximum load of inflatable shaft: 80Kg
Number of unwinding and inflation shafts: 1Pcs
Main drive motor: Servo motor
Roller surface treatment: Surface oxidation of metal aluminum roll
Scraper structure: Double-sided comma scraper
Coating roller (steel roller): Hard chrome plating
Back roller (rubber roller): The surface is wrapped with imported EPDM
Scraper intermittent height adjustment: Manual adjustment;
Single head position: Installation and operation before drying tunnel
2. Coating drying tunnel
Oven structure: Double-layer independent heating, arranged up and down
Oven length: 1 meter / section
Material: SUS304 stainless steel
Temperature control: Divided into normal working temperature control, over-temperature monitoring and alarm protection control, and cut off the heating main power supply; each section is completely independent control
Heating method: Analog signal control power heating, hot air circulation structure
Heating power of single section oven: 6KW
Temperature in drying tunnel: Design Max150 ℃, temperature difference in single section oven≤ ± 2.5 ℃
Blowing method: Upper and lower air blowing, common heating body for upper and lower air chamber
Wind nozzle structure: The nozzle slot is slotted by a special mold
Fan control: Contactor control
Heating control: solid state relay
Fan material: SUS304 stainless steel
Solvent recovery system: Optional
*Roller winding function：
Rolling purpose: Roller press the battery material coated on aluminum foil or copper foil
Maximum opening thickness of rolling mill: 2 mm
Rolling width: Max 300 mm
*Roller winding parameters：
Rolling force: Max. 35T（Can be customized to increase）
Mechanical speed: Max.10m/min
Roll diameter: Ф200 mm；Material：9Cr3Mo
Roller surface hardness: ＞HRC65
Roller surface width: 330 mm
Pushdown mode: Hydraulic
Rolling accuracy: ±2.5 um
Maximum opening of rolling mill: 2 mm
Reducer and gear box: Modular
Rolling mill motor: AC frequency conversion motor
Winding: With correction function and tension control function
*Control System：
Main control system: Touch screen, PLC, servo system
Operation mode: Manual, automatic, emergency stop; the whole machine can be operated before and after
Alarm situation: When the device fails, the touch screen will display the corresponding correction screen
*Hardware accuracy
Scraper: Round jump≤ ± 1.5um, Ra0.4, straightness≤ ± 1.5um
Coating roller (steel roller): Round jump ≤ ± 1.5um, Ra0.4 straightness≤ ± 1.5um
Glue roll: Round jump ≤10um，straightness≤10um
Roll: Round jump ≤ ± 2um, Ra0.4, straightness≤ ± 2um
Deviation correction: ±0.2mm
