BC (Back Contact) solar cells represent a new generation of high-efficiency photovoltaic technology, characterized by relocating both positive and negative electrodes to the rear side of the cell, which completely eliminates the shading effect of front-side grid lines found in conventional cells. This design increases the effective light-receiving area and significantly enhances the short-circuit current density (Jsc). At the same time, the grid-free front surface offers a cleaner and more aesthetically appealing appearance, making BC solar cells an ideal choice for high-end applications such as Building-Integrated Photovoltaics (BIPV).
HJT (Heterojunction Technology) cells employ a sophisticated architecture combining crystalline silicon wafers with hydrogenated amorphous silicon (a-Si:H) thin films. The core structure involves sequential deposition of intrinsic amorphous silicon (i-a-Si:H) and doped amorphous silicon layers (p/n-a-Si:H) on both sides of N-type crystalline silicon substrates, forming high-quality heterojunction interfaces.
This equipment is a professional automated screen printing production line for photovoltaic monocrystalline silicon solar cells, integrating the entire process flow including printing, drying, sintering + light injection, UV curing, and testing/sorting. Through high-precision screen printing technology, it achieves accurate formation of cell electrodes, combined with efficient thermal treatment processes and intelligent visual inspection systems, effectively improving the photoelectric conversion efficiency and overall yield of solar cells while ensuring consistency and reliability in mass production.
This equipment is a precision automated printing machine dedicated to back-contact (BC) PV cells, designed specifically for high-precision printing of insulation adhesive and solder paste on the rear side of IBC and other back-contact high-efficiency cells. Through precise control of adhesive volume, pattern alignment, and printing consistency, it effectively improves the welding yield and power generation performance of back-contact cells, ensuring long-term reliability of high-efficiency cells.
Through multiple inspection systems including AOI, IV/EL, and PL, the machine automatically sorts cells into bins based on inspection results, and finally transfers cassettes via shuttle carts to AGV docking stations or packaging lines, achieving fully automated end-to-end operation. As the last critical process in the PV cell production line, this equipment performs comprehensive quality inspection and grading of cells to ensure outgoing product quality, providing reliable quality assurance for downstream module production.
Through multiple inspection systems including AOI, IV/EL, and PL, the machine automatically sorts quarter-cut cells into bins based on inspection results, and transfers cassettes via shuttle carts to AGV docking stations or packaging lines for fully automated operation. Specially designed for quarter-cut cells, this equipment performs comprehensive quality inspection and grading to ensure outgoing product quality, meeting the production requirements of high-efficiency cell modules.
