Multi-main-grid crystalline silicon solar cell series welding method and multi-main-grid crystalline silicon solar cell series welding machine

Abstract

The invention discloses a multi-main-grid crystalline silicon solar cell series welding machine, which comprises welding platforms, metal screen frames, infrared welding devices, multi-main-grid welding strip laying devices and manipulators. The multi-main-grid welding strip laying devices and the manipulators are arranged at side faces of the vacuum absorption cell series welding platforms; the two welding platforms move along an X-axis direction; the infrared welding devices and the multi-main-grid welding strip laying devices can move along a Y-axis direction; when strips and cells are welded and the metal screen frames are laid on one welding platform, a cell series is welded on the other platform; the multi-main-grid cell series is laid and welded on the two platforms alternatively; and the infrared welding devices can move to positions above the platforms to be welded for welding according to the needs. Due to a double-platform design, the capacity and the working efficiency of the series welding machine can be improved; and meanwhile, no relative movement exists between the cells and the welding platforms as well as between the welding strips and the welding platforms, so that the occurrence of the phenomenon that the welding strips cannot be welded on the cells due to the offset of the welding strips is avoided.

Description

technical field [0001] The invention belongs to the design field of solar battery string welding equipment, and in particular relates to a string welding method and a string welding machine for multi-main grid crystalline silicon solar cells. Background technique [0002] Multi-busbar technology has become an important means for photovoltaic module suppliers to reduce costs and increase efficiency by increasing the output power of photovoltaic modules and reducing production costs. At present, multi-busbar technology uses multiple thin metal wires to replace conventional ribbons in series without busbar cells, so the number of busbars (10-25) of multi-busbar cells is greatly increased compared with conventional 4-bar cells. At present, the multi-busbar stringer welding machine uses one welding platform when welding multi-busbar cells, and the cell, ribbon laying and welding cycle of the stringer cannot be completely independent, so the production capacity is low; on the othe...

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Problems solved by technology

[0003] In order to solve the above problems, the present invention discloses a novel multi-busbar battery string welding method and a stringer welding machine, which improves the battery string welding speed and reduces the Welding defects caused by ribbon offset

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