Manufacturing method of copper-indium-gallium-selenium thin-film solar cell and welding device of bus bar

• Main Authors: HE QIQI, LIU XIAOYU, ZHU DENGHUA, ZHANG WEI, ZHANG KUANXIANG, WANG ZHENXING
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SEMICONDUCTOR DEVICES; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention discloses a manufacturing method of a copper-indium-gallium-selenium thin-film solar cell and a welding device of a bus bar, and belongs to the technical field of solar cells. The welding device of the bus bar comprises a rack, a guide assembly, a traction assembly, a welding assembly and a pressing assembly, wherein a to-be-welded bus bar is pulled to the tail end of a to-be-welded area by the traction assembly and pressed by a tail pressing block, then the bus bar is welded by the welding assembly, meanwhile, the bus bar and a back electrode layer are pressed by the pressing assembly, and welding work is completed. According to the device, the bus bar is connected with the back electrode of the thin-film solar cell in a cold processing mode. According to the manufacturing method of the solar cell, the bus bar welding device is used for welding the bus bar, continuous production is achieved by effectively arranging welding spots, and the technical problems of high production cost, long equipmen