Pv ribbon is an important raw material in the process of PV module cell welding. The quality of the pv ribbon will directly affect the current collection efficiency of the PV module and has a great impact on the power of the PV module.
pv ribbone must be welded firmly in the cell series process to avoid false welding phenomenon. Manufacturers must determine what state ofpv ribbon to use based on the characteristics of the selected cell when selecting the tape. The general selection criteria is based on the thickness of the cell and the size of the short-circuit current to determine the thickness of the tape, the width of the tape should be consistent with the width of the main grid line of the battery, the softness of the tape generally depends on the thickness of the cell and welding tools.
Manual welding requires the softer the state of the solder tape, the softer the state of the solder tape on the soldering iron, after walking together will be in good contact with the battery, the stress generated during the welding process is small, which can reduce the rate of shattering. However, too soft solder tape will reduce the tensile strength, easy to be pulled off. For the automatic welding process, the pv ribbon can be slightly stiffer, which is conducive to the welding machine to straighten and press the pv ribbon, too soft pv ribbon used in the machine is easy to deformation, thus reducing the product yield.