Method and device for fixed connection of solar cell string, and press assembly

A method for a fixed connection of a solar cell string, comprising:

• laying the solar cell string;
• and
• performing a melting-solidification operation;
• wherein the laying of the solar cell string comprises:
• stacking a back film, a first solder ribbon, a solar cell, a second solder ribbon and a front film to form a solar cell unit;
• wherein the first solder ribbon comprise a first solder ribbon section and a second solder ribbon section connected with each other;
• the second solder ribbon comprises a third solder ribbon section and a fourth solder ribbon section connected with each other;
• stacking a back film, a first solder ribbon, a solar cell, a second solder ribbon and a front film to form a solar cell unit;
• wherein the first solder ribbon comprise a first solder ribbon section and a second solder ribbon section connected with each other;
• the second solder ribbon comprises a third solder ribbon section and a fourth solder ribbon section connected with each other;
• wherein the stacking comprises:
• laying the second solder ribbon section on the back film;
• laying the solar cell on the second solder ribbon section;
• laying the third solder ribbon section on the solar cell;
• and
• laying the front film on the third solder ribbon section to form the solar cell unit;
• connecting N solar cell units in series to form the solar cell string, wherein N is an integer equal to or greater than 2;
• and
• placing a first press on the front film to form a laying unit, and placing a second press on the front film of the laying unit, wherein the first press presses against at least a middle portion of the front film;
• and the second press presses against at least a head portion of the front film;
• and the head portion is an end of the front film covering the third solder section;
• and
• the melting-solidification operation is performed through steps of:
• after the first press is placed on the front film, subjecting the laying unit to melting and solidification;
• placing the second press on the laying unit;
• transferring the laying unit with the second press to a melting-solidification zone for melting and solidification to complete fixed connection of the solar cell string;
• and removing the first press and the second press from the front film of the solar cell string;
• or
• after the first press and the second press are both placed on the front film of the laying unit;
• transferring the laying unit with the second press to the melting-solidification zone for melting and solidification to complete fixed connection of the solar cell string;
• and removing the first press and the second press from the front film of the solar cell string.