PERC solar cell production line

Abstract

The invention discloses a PERC solar cell production line. The PERC solar cell production line comprises process equipment, automatic feeding and discharging equipment, automatic transmission equipment and a basket, wherein the automatic feeding and discharging equipment is used for circulating a material in a process, the automatic transmission equipment is used for circulating the material between processes, the process equipment comprises a texturing machine, a cleaning and etching machine, a laser ablation machine, a screen printing machine, a sintering furnace, a test sorting machine, a diffusion furnace, a square resistance detection machine, a back passivation plate PECVD (Plasma Enhanced Chemical Vapor Deposition) and a tubular PECVD, wherein the texturing machine, the cleaning and etching machine, the laser ablation machine, the screen printing machine, the sintering furnace and the test sorting machine are sequentially arranged along a longitudinal direction, the diffusion furnace, the square resistance detection machine, the back passivation plate PECVD and the tubular PECVD are arranged along a transverse direction, the diffusion furnace is arranged at a downstream of the texturing machine, the square resistance detection machine is arranged at an upstream of the cleaning and etching machine, the back passivation plate PECVD is arranged at a downstream of the cleaning and etching machine, and the tubular PECVD is arranged at an upstream of the laser ablation machine. The PERC solar cell production line has the advantages of reasonable layout, high automation, high production efficiency and the like, the product quality is ensured, and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of solar cell manufacturing, in particular to a PERC solar cell production line. Background technique [0002] With the continuous progress of photovoltaic technology, photovoltaic cells are developing towards high efficiency and low cost. The passivation efficiency of conventional aluminum back field cells using SiN on the front has basically reached a bottleneck. High efficiency and low cost cells have become the mainstream trend of solar cell development. Among high-efficiency battery technologies, PERC battery technology (that is, passivated emitter back contact, through the formation of a passivation layer on the back of the solar cell to improve conversion efficiency), has the advantages of high conversion efficiency, good compatibility with traditional battery technology, and reduced mass production costs. , with the best cost performance for industrial upgrading, high-efficiency PERC cells will become the best...

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Problems solved by technology

[0004] At present, although my country's photovoltaic industry is already at the leading level in the world, with photovoltaic cell production capacity exceeding 50GW, equivalent to more than 500 100MW production lines, accounting for more than 70% of the global supply, more than 90% of solar cell manufacturing workshops are still labor-intensive and discrete. Most of the semi-automated workshops still require manual participation, and a small part has realized the automation within the process, or the automation between individual processes and processes. The overall automation and intelligence level of the production line is insufficient. Manual operations affect the quality of batteries, and the production cost cannot be obtained. Effective management and control cannot meet the needs of future high-efficiency battery technology

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