Doctor Blade Continuous Battery Coating Machine

1   

Suitable system

Coating process for positive and negative electrodes of ternary, lithium iron phosphate, lithium cobalt oxide, lithium manganese oxide, graphite, silicon carbon and other battery systems

2   

Coating method

Continuous coating with doctor blade

3   

Coating speed

0 ~ 0.5 m /min

Depends on the drying conditions

4   

Operating substrate thickness

Aluminum foil (Al): 8～30um

Copper foil (Cu): 6 ~ 30um

5   

Roller surface design width

230 mm

6   

Ensure coating width

Within 200mm

7   

scraper roller

Φ 100mm

8   

Coating accuracy

±3um

9   

Suitable slurry viscosity

2000~12000 (mPas)

10   

Single-sided coating dry thickness range

20-200μm

11   

Solvent characteristics

Oily solvent NMP (sg=1 033, bp=204℃)

Aqueous solvent H2O/NMP (sg=1 000, bp=100℃)

12   

Suitable solid content range

20~85%

13   

Coating size accuracy(mm)

L≤±1,W≤±0 5

L: length direction

W: width direction

14

Front and back positioning accuracy(mm)

L≤±1,W≤±0 5

1

Roller installation structure

Steel frame firmly installed

2

Roller surface treatment

Surface oxidation of metal aluminum roller

3

Tension control system

Automatic control of constant tension

4

Coil loading method

The material roll is fixed with a 3-inch air shaft;

Unwinding single air shaft

5

Maximum unwinding diameter

Ф250mm

6

Maximum load bearing of air shaft

50Kg

Number of unwinding air shafts

1

10

Roller surface treatment

Surface oxidation of metal aluminum roller

11

Scraper structure

Double-sided comma scraper

12

Coating roller (steel roller)

Surface hard chrome plating

14

Scraper intermittent height adjustment

Precision screw adjustment;

15

Single head position

Installation and operation before drying tunnel

1

Oven structure

Double-layer independent heating, arranged up and down

2

Oven length

1m /section

3

Material

SUS304 stainless steel

4

Temperature control

It is divided into normal working temperature control, over-temperature monitoring alarm protection control, and cuts off the main power supply of heating; each section is completely independently controlled

5

Heating method

Analog signal controls power heating , hot air circulation structure , accuracy±0 5℃

6

Single section oven heating power

3 KW

7

Temperature in drying tunnel

Designed Max 150℃, temperature difference in a single oven ≤±2 5℃

8

Blowing method

Blowing air from top to bottom, the upper and lower air chambers share a common heating element

9

Nozzle structure

The nozzle slot is slotted with a special mold

10

Fan control

Contactor control

11

Heating control

Analog signal controlled power solid state relay

12

Fan material

SUS304 stainless steel

13

Solvent recovery system

Optional

1

Automatic correction

Installation of drying outlet

2

Automatic tension

Automatic control of constant tension

3

Installation structure

Steel frame firmly installed

4

Number of wind-up air shafts

1

Single-arm reeling