The silver paste is printed to the surface of the cell by pressure, and becomes the positive and negative electrodes of the solar cell after drying and firing.
Process Flow:
Loading→1st Rear Printing→ Drying →2ndRear Printing → Drying →1st Front Printing → Drying →2nd Front Printing →Firing→ Light Injection →Test &Sorting
CT:210mm half cell, CT<1.45s ;182mm half cell, CT<1.33s.
Adopt high-speed rotary DD motor, with four paper reeling tables which can quickly complete the wafer in /out and the turntable time can be less than 200ms.
The squeegee head adopts the structure of direct-drive voice coil motor to realize real time pressure mode,which can realize real pressure monitoring.
High precision camera alignment,the kinematics calibration algorithm with independent intellectual property rights, to achieve high-precision alignment.
Automatic wet weight weighing unit, on-line printing quality monitoring (AOI) unit can be optional,to monitor the printing quality and realize loss control.