Mixing( Cathode)
Process:
1.Raw material Wt.
2.Mixing speed
3.Mixing time
4.Temp.
Product:
1.Viscosity
2.Particle size
3.Density
4.Solid content
Condition:
1.Temperature: 23±5℃
2.Humidity: ≤25%
3.Clean: ≤100000
Mixing(Anode)
Process:
1.Raw material Wt.
2.Mixing speed
3.Mixing time
4.Temp.
Product:
1.Viscosity
2.Particle size
3.Density
4.Solid content
Condition:
1.Temperature: 23±5℃
2.Humidity: ≤25%(oil)
≤45%(water)
3.Clean: ≤100000
Coating (Cathode)
Process:
1.Belt speed
2.Position of feeding head
3.Temp of oven
4.Length and length in between
Product:
1.Unit weight
2.Length and length in between
3.pattern appearance
4. areal density
Condition:
1.Temperature: 23±5℃
2.Humidity（begin）: ≤25%
Humidity（finish）: ≤40%
3.Clean: ≤100000
Coating (Anode)
Process：
1.Belt speed
2.Position of feeding head
3.Temp of oven
4.Length and length in between
Product:
1.Unit weight
2.Length and length in between
3.pattern appearance
4.Thickness
Condition:
1.Temperature: 23±5℃
2.Humidity(begin): ≤25%/45%(oil/water)
Humidity(finish):
≤40%/45% (oil/water)
3.Clean: ≤100000
Pressing(Cathode)
Process:
1.Pressure
2.Gap
3.Speed
Product:
1.Thickness
2.Appearance
Condition:
1.Temperature: 23±5℃
2.Humidity: ≤40%
3.Clean ≤100000
Pressing(Anode)
Process:
1.Pressure
2.Gap
3.Speed
Product:
1.Thickness
2.Appearance
Condition:
1.Temperature: 23±5℃
2.Humidity: ≤40%
3.Clean ≤100000
Slitting(Cathode/Anode)
Process:
1.Tension
2.Speed
Product:
1.Width
2.Peeling strength
3.Appearance
4.Burr
Condition:
1.Temperature: 23±5℃
2.Humidity: ≤40%
Clean: ≤100000
Electrode Drying
Process:
1.Drying Temp.
2.Vacuum Degree
3.Drying Time
Product:
1.Water Content
Condition:
1.Temperature: 23±5℃
2. Humidity: ≤40%
3.Clean: ≤100000
Winding(Auto)
Process:
1. Electrode Tension
2. Separator Tension
3. Positioning
4. Welding parameter
Product:
1. Tab Positions
2. Electrode(X-ray)/Separator Position
3. Flatness of Tapes
4. Tab welding strength
Condition:
1.Temperature: 22±6℃
2.Humidity: ≤70%
3.Clean: ≤300000
Al cup forming
Process:
1.Temp
Pressure
1.Dimension
2.Appearance (Al bag & CPP)
3.Sealing test
Sealing
Process:
1.Temp
2.Time
3.Pressure
4.Alignment
Product:
1.Position of the tabs
2.Thickness
3.Hi-pot
4.Parallelism
5.Appearance
Condition:
1.Temperature: 23±5℃
2.Humidity: ≤40%
3.Clean: ≤100000
Battery Drying
Process:
1.Drying Temp.
2.Vacuum Degree
3.Drying Time
Product:
1.Water Content
Condition:
1.Temperature: 23±5℃
2.Dew point : ≤-40℃
3.Clean: ≤100000
Process:
1.Flow rate from pump
2.Temperature
3.Time
4.Pressure
Product:
1.Weight of electrolyte
Condition:
1.Temperature: 23±5℃
2.Glovebox:
Temperature: 23±5℃
Dew point : ≤-40℃
Clean: ≤100000
Degas Sealing
Process:
1.Vacuum time
2.Sealing time
3.Sealing temp
4.Sealing pressure
5. Trimming pressure
Product:
1.Appearance
2.Dimension
3.Sealing test
Condition:
1.Temperature: 23±5℃
Formation
Process:
1.Charge current & Discharge current
2.Charge time
3.Cut-off current
4.Cut-off voltage
Product:
1.Capacity
2.Resistance
3.Voltage
Condition:
1.Temperature: 23±5℃
Aging
Process:
1.Time
2.Temperature
Condition:
Temperature: 40±3℃
Finished product inspection
Quality FQC (Cell)
OQC(Cell)
*C=0 Sampling Plan ,AQL=0.4 or as Customer Requirements.
Pack
Quality FQC (Pack)
OQC(Pack)
*C=0 Sampling Plan ,AQL=0.4 or as Customer Requirements.
Product Certification
