Introduction
With “carbon neutrality” becoming the consensus of the world’s major economies, the installed capacity of photovoltaic modules is growing rapidly. At present, the new trend of photovoltaic glass installation is a double-sided glass structure. With the development of science and the increase of market demand, the application of lasers in the photovoltaic industry is becoming more and more extensive and varied in response to customer demand. Han’s Laser has actively launched the products to adapt to the new market demand for NPFL-80IR-1.01 series of sub-nanosecond infrared lasers, which can help to drill holes for the back sheet glass of the BIPV.
Understanding the back sheet glass of the BIPV
PV glass is an encapsulation material used in BIPV, whose main function is to protect the cells from moisture, gas oxidation, and rusting of the electrodes. The double glass structure can utilize the energy reflected from the direct sun on the ground on one hand, and on the other hand, it can utilize the energy reflected from the back row of multiple rows of photovoltaic glass panels to the front row, thus helping to increase the overall installation energy.
The ability to utilize the backside of the power generation to generate additional revenue is the main feature of bifacial modules, and the use of bifacial modules can effectively increase the power generation capacity of the PV power plant in the same area. The input-output ratio can be increased by more than 10 times with little increase in cost.
Ground and Multi-Row Reflection Rendering
Double-glass modules are a type of encapsulation for double-sided modules with the highest efficiency. They are resistant to water vapor, corrosion, wind and sand, have a low attenuation rate, long service life and are easy to clean.
Features of the NPFL-80IR-1.01 Series of Sub-Nanosecond Infrared Lasers
1.Perforation stabilization
Sub-nanosecond pulse widths ensure higher energy absorption in glass than conventional MOPA nanosecond lasers compared to picosecond and femtosecond, reducing bubbles or scratches. Due to the use of water cooling, a good solution to the thermal effects produced by the laser, is to ensure the stability and service life of the laser. In the actual production work, it can adapt to the high temperature, high humidity and other complex environments of the photovoltaic glass perforation site. NPFL-80IR-1.01 series sub-nanosecond infrared laser has been tested to be able to maintain normal and stable operation and work in an environment of minus 5 ℃ to 45 ℃.
2.Small Size
The 80W sub-nanosecond infrared laser of Han’s Laser adopts a unique all-fiber optical scheme, choosing a 1064nm modulable semiconductor source with excellent performance, a high brightness 976nm pump source, a heavily doped fiber and a reasonably optimized fiber length, which is capable of suppressing nonlinear effects such as stimulated Raman scattering and stimulated Brillouin scattering.
3.High Peak Power and Superior Beam Quality
Its high peak power allows laser drilling in almost all materials. 80 Watt Infrared Sub-Nanosecond Laser is mainly used in semiconductor, photovoltaic and other laser processing fields. Especially in glass drilling, it helps to improve processing efficiency.
Photovoltaic Ultra-Clear Rolled Glass Drilling
Conclusion
NPFL-80IR-1.01 series sub-nanosecond infrared laser adopts a multi-stage amplification scheme, reasonable allocation of gain at all levels, low hole chipping rate, high machining precision, high efficiency, high quenching efficiency, compared with similar laser products, the machining efficiency and indexes have been improved to different degrees.