Compound knurling photovoltaic welds area

• Main Authors: LIANG ZHE, ZHU JINGBING
• Format: Patent
• Language: English
• Published: 09.09.2015
• Subjects: BASIC ELECTRIC ELEMENTS; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The utility model provides a compound knurling photovoltaic welds area, including one be used for with solar wafer on the banded electrically conductive substrate of main grid seam welding, place several special -shaped metal wires that can the light beam in banding electrically conductive substrate upper surface one side, the length of dysmorphism metal wire is no longer than one solar wafer's greatest length. Furtherly, special -shaped metal wire cross sectional shape is greater than 90 isosceles triangle for vertex angle. Furtherly, special -shaped metal wire cross sectional shape are semi -circular. Furtherly, special -shaped metal wire parallel arrangement is on the electrically conductive substrate of banding. Furtherly, the material of special -shaped metal wire are fine copper or silver, if fine copper, then special -shaped metal wire surface plated with one deck soldering tin. The compound knurling photovoltaic welds area course of working can be gone here and there welding process with solar cell and combined. The utility model discloses can improve the photovoltaic and weld area and solar cell back electrode welding strength, improve photovoltaic conversion efficiency simultaneously.