Doctor Blade Continuous Battery Coating Machine

No

Project

Technical Parameters

Remark

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

No

Project

Technical Parameters

Remark

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

No

Project

Technical Parameters

Remark

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

No   

Project

Technical Parameters

Remark

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

No

Project

Technical Parameters

Remark

1

Main control system

Touch screen, PLC

2

Alarm situation

When the device fails, the touch screen will display the corresponding correction screen

No

Project

Technical Parameters

Remark

1

Scraper

Roundness≤±1 5um, Ra0 4, straightness≤±1 5um

2

Coating roller (steel roller)

Circular runout ≤ ±1 5um, Ra0 4 straightness≤ ±1 5um