Manufacturing method of back contact solar battery pack

Abstract

The invention discloses a manufacturing method of a back contact solar battery pack. The manufacturing process comprises the steps of: S1, forming a positive charge film layer on the front surface anda negative charge film layer on the back surface of crystalline silicon to manufacture a crystalline silicon integrated board; performing a boron diffusion process on a shady surface of the crystalline silicon integrated board to form a P-type diffusion region; S3, adopting a magnetron sputtering method for fully penetrating phosphorus atoms onto the crystalline silicon integrated board, so thatan infiltrated portion forms an N-type diffusion region; S4, adopting chemical vapor deposition method; S5, bonding the processed crystalline silicon integrated board to tempered glass of the corresponding size; S6, performing seal punching on the crystalline silicon integrated board obtained in step S5; S7, carrying out sealed stamping for 2-4 hours to form a solar battery pack; S8, and startingcharging of the battery. The back contact solar battery pack manufactured by adopting the manufacturing method has the advantages of fast charging, long service life and wide charging temperature range, has low processing consumable cost, greatly improves the process yield, and achieves good economic benefits.

Description

technical field [0001] The invention relates to the technical field of battery processing, in particular to a method for manufacturing a back-contact solar cell group. Background technique [0002] Solar cells, also known as "solar chips" or "photovoltaic cells", are photoelectric semiconductor sheets that use sunlight to generate electricity directly. As long as it is illuminated by light that meets certain illumination conditions, it can output voltage instantly and generate current when there is a loop. In physics, it is called solar photovoltaic (Photovoltaic, abbreviated as PV), or photovoltaic for short. A solar cell is a device that directly converts light energy into electrical energy through the photoelectric effect or photochemical effect. Crystalline silicon solar cells that work on the photoelectric effect are the mainstream, while thin-film solar cells that work on the photochemical effect are still in their infancy. [0003] At present, the application of so...

AI Technical Summary

Problems solved by technology

But at this stage, its cost is very high, and its service life is short, in view of these problems, here we propose a manufacturing method of back-contact solar cells