Laser soldering systems and methods for joining crystalline silicon solar batteries

摘要

The disclosure includes a laser soldering method of connecting crystalline silicon solar batteries. Methods can include placing conductive soldering strips and crystalline silicon solar batteries on a lower press plate and aligning the conductive soldering strips on metal electrodes of crystalline silicon solar batteries. Methods can also include placing an upper press plate on the conductive soldering strips and the crystalline silicon solar batteries and vacuuming between the upper and lower press plates such that absolute pressure between the upper and lower press plates is less than atmospheric pressure. Methods can also include laser soldering the conductive soldering strips and the crystalline silicon solar batteries.

主权项

1. A laser soldering method of connecting crystalline silicon solar batteries, comprising:
placing conductive soldering strips, crystalline silicon solar batteries, and aligning the conductive soldering strips against electrodes of the crystalline silicon solar batteries in sequence according to design of a crystalline silicon solar battery module on a lower press plate; placing the upper press plate on the conductive soldering strips and the crystalline silicon solar batteries; vacuuming the space between the upper and lower press plates such that absolute pressure between the upper and lower press plates of the conductive soldering strips and the silicon solar batteries is less than atmospheric pressure; and laser soldering the conductive soldering strips and the crystalline silicon solar batteries; wherein the lower press plate or the upper press plate further comprising at least one layer of solid sheet or least multiple layers of solid sheets; wherein at least one press plate is laser penetrable; wherein the laser soldering is implemented between the conductive soldering strip and the electrodes of the crystalline silicon solar battery through the press plate; wherein during laser soldering the laser penetrate both the lower press plate and the upper press plate to irradiate on the conductive soldering strips to tightly contact the positive electrode and the negative electrode of the crystalline silicon solar battery, the method further comprising simultaneously implementing the laser soldering conductive soldering strips onto an positive electrode and an negative electrode of the crystalline silicon solar battery.