Battery Production Transfer Coating Machine with Intermittent and Continuous Coating

Suitable materials

Oil or water-based lithium iron phosphate, lithium cobalt, lithium manganate, ternary, lithium nickel cobalt manganate, lithium titanate, carbon graphite and other systems

Operating substrate parameters

Aluminum foil:

Thickness: 10-30um; Width: 200-620mm; Coil diameter: max.500mm; Weight: max.500kg;

Copper foil:

Thickness: 6-30um; Width: 200-620mm; Coil diameter: max.500mm; Weight: max.500kg;

Design width of roller

650 mm

Effective coating width

200~580mm

Mechanical operation speed of equipment

12m/min

Coating speed

0.5-8m/min

Suitable material viscosity

2000~12000 Cps

Single side coating dry thickness range

50-150μm

Minimum intermittent length

5mm

Minimum coating length of multi-stage

20mm

Solvent properties

Oily solvent: NMP(s.g=1.033,b.p=204℃)

Aqueous solvent: H2O/NMP(s.g=1.000,b.p=100℃)

Suitable solid content

Anode: S．C. 60%±20%

Cathode:

S．C. 50%±10%(PVDF system)

S．C. 50%±5%（SBR system）

Relative density

Anode: 1.5—2.59/cm2

Cathode: 1～1.89/cm2

Coating method

Double layer double side 3-stage unequal distance intermittent transfer coating / second side automatic tracking / continuous transfer coating

Roll change mode

manual

Base material running direction

Forward coating, substrate forward and reverse empty foil operation

Installation structure of roller

Integral vertical plate installation (thickness 30mm)

Roller surface treatment

Oxidation treatment of aluminum roll surface, the surface hardness is HRC65, the run out of roll is ≤ 20 μ m, the surface roughness is Ra0.8, the parallelism is ≤ 0.1mm;

Tension control system

Full automatic PID closed-loop control constant tension; unwinding tension range: 0~50N; tension control accuracy ± 1N;

Correction method

Automatic EPC control, stroke 120mm

Winding method

Uncoiling in up and down direction

The coil is fixed with 3-inch inflatable shaft and inflatable shaft

Unwinding single inflatable shaft, double-sided support

Manual splicing platform, double compression bar mode

Substrate running direction

forward and backward

Substrate running speed

12m/min

Maximum unwinding diameter

Ф500mm

Maximum bearing capacity of inflatable shaft

500Kg

Number of unwinding inflatable shafts

1

Control system

Set the function operation button, which can complete the operation of tape extension, pause, emergency stop, forward and reverse, left and right alignment, etc

Unwinding speed

The unwinding speed is controlled by PLC according to the set coating speed and real-time tension change data; the unwinding power is provided by AC motor + turbine reducer;

Installation structure

50 mm thick overall vertical plate structure, 1 ton overall weight

Main drive motor

Servo motor (750W)

Intermittent push motor

Servo motor (750W)

Roller surface treatment

The surface of aluminum roll is oxidized, the surface hardness is HRC65, the run out of roll is ≤ 20 μ m, the surface roughness is Ra0.8, the parallelism is ≤ 0.1mm;

Reducer

100:1 with 750W reducer

Scraper structure

Double sided comma scraper, electroplated, outer diameter Φ 128mm,

Blade angle rotation control

Handle rotation

Coating roller (steel roller)

The surface is plated with imported hard chromium, with a diameter of 128mm;

Tension

Full automatic PID closed-loop control constant tension, tension range 0 ~ 50N, tension control accuracy ± 1n

Back roll

160mm diameter, imported EPDM for surface bread, fine grinding for roll surface

Trough mixing

Straight movement of rodless cylinder, adjustable speed

Baffle plate

Saigang material, sealed with styrofoam, equipped with special knife mould

Blade intermittent height adjustment

Servo motor adjustment: set the intermittent size of scraper and steel roller on the touch screen, with the minimum adjustment size of 0.1um

Stand alone head position

Installation and operation before drying

Oven structure

Single layer independent heating, up and down arrangement, the first two heating ovens adopt the up and down independent heating bag heating mode, the second two heating ovens adopt the common heating bag heating mode.

First 2 auxiliary heating

The infrared auxiliary heating structure is adopted to prevent the cracking in the heating process and accelerate the drying speed.

Oven length

12m (3m / section, 4 sections in total)

texture of material

Stainless steel, internal container national standard SUS304 (1.0mm), external container national standard SUS201 (1.2mm)

Driving mode of oven guide roller

All guide rollers are mainly driven by servo motor with diameter of Φ 60mm and surface plated with hard chromium; the first and second guide rollers are in ascending arc distribution, the third and fourth guide rollers are in descending arc distribution with total drop of 200mm.

Temperature control

It is divided into normal working temperature control and protection control of over temperature monitoring alarm. When the temperature is over, an audible and visual alarm will appear, and the main heating power supply will be cut off; each section is completely controlled independently

Heating mode

Infrared heating + stainless steel heating pipe electric heating, hot air circulation structure

Heating power of single section oven

Front 2 sections 22KW * 3M, rear 2 sections 18kw * 3M

Temperature in oven

Design Max150 ℃, temperature difference in single section oven ≤ 5 ℃

Surface temperature of box during operation

≤45℃

Blowing method

Upper and lower air blowing, the upper and lower air volume are respectively controlled by the valve, which can be fine adjusted; the upper and lower air chambers share the heating body

Exhaust air volume control of each section

Through mechanical valve, independent control, fine tuning

Nozzle structure

The blowing direction is 30 degrees to the horizontal, and the air nozzle groove is slotted with a special mold

Fan control

AC contactor control

Heating control

Solid state relay

Fan material

National standard SUS304 stainless steel

Blowing capacity of each section (3m)

4500m3 / h, pressure: 550pa at rated speed

Exhaust volume (two in total)

10000m3 / h, pressure: 600Pa at rated speed

Solvent recovery system

No, only interface installation

NMP solvent concentration alarm

None (this function needs to be quoted separately)

Air chamber pressure monitoring

None (this function needs to be quoted separately)

Exhaust air volume

100-350 m3 / min