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Affiliation of Author(s):材料科学与技术学院

Title of Paper:Numerical simulation of resistance welding of solar cell using a thermal-electrical-mechanical coupled model

Journal:JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY

Key Words:Solar cell Thermal-electrical-mechanical coupled model Temperature field Stress and deformation field

Abstract:A thermal-electrical-mechanical coupled model was established to simulate the Parallel-gap resistance welding (PGRW) process between the Germanium-based solar cell and the silver interconnector. The simulated results showed that the peak temperature during PGRW is lower than the melting temperature of the base material. It is indicated that the connection mechanism of PGRW was mainly the interdiffusion and recrystallization due to pressure of electrode and the resistance heat. A detailed calculation method of current was proposed using semi-layered resistance model and layered resistance model. By comparing these models, it was found that the layered resistance model was more accurate to calculate the current value. The maximum residual stress was generated within the region under the welding electrode, while the maximum deformation was generated on the edge of the interconnector. The current variation trend predicated by the simulation results is in good agreement with the results obtained by the experiments.

ISSN No.:1738-494X

Translation or Not:no

Date of Publication:2018-01-01

Co-author:Zhang, Qi,Qifeng Zhang,Zhu, Zhenxin,Wei Yanhong

Correspondence Author:Xiaohong Zhan