Solar cell manufacturing process Common solar cells are divided into two types:
1. A solar crystalline silicon cell made of polysilicon and occasionally monocrystalline silicon
2. One is that in the most widely used polysilicon solar product production process of solar thin-film batteries, the raw materials are melted first, and then silicon ingots are formed through a crystallization process. The silicon ingots are cut and shaped and then made into silicon wafers by high-precision slicing techniques. The wafer is then made into a battery using a multi-step production process that includes etching, doping, coating, and laying electrical contacts. On this basis, the solar cells are connected to each other and encapsulated, thereby forming a solar module, together with other system components.
Issued to the system integrator, installed in the solar energy system
1. Solar crystalline silicon cells Understand the main manufacturing processes of solar energy systems, silicon-silicon ingots-wafers-batteries-solar modules-solar energy systems, in which silicon ingots and silicon wafers are two processes that generate silicon waste. Because the pure silicon material is very expensive, if these wastes that were originally to be discarded are cleaned up and recycled, the utilization rate of silicon raw materials is increased, and the material cost is greatly saved. The Wellbelt (Group) pressure blasting system is the ideal solution for this recyclable silicon raw material cleaning.
2. Solar thin film battery
The pressure blasting system can also be applied to the manufacture of thin-film solar modules Wielbeelt (Group) provides surface cleaning solutions for the solar manufacturing sector
Application I - Sandblasting of silicon ingots produces silicon waste during silicon ingots. The silicon wafer forms the basis of the solar module. After the silicon ingot is cut and shaped, it is formed by a high-precision slicing technology. The damaged silicon wafer generated during the process is also recycled.
For the recycling of silicon waste, it is mainly to clean the surface of dirt, impurities, and debris. The Verbelatite (Group) pressure blasting system is the best solution for this cleaning application. As the sandblasting process, the maximum material wear will reach 1mm, it will produce a lot of dust, which puts special requirements on the high wear resistance of sandblasting equipment.
What's more, the Verbellat (Group) pressure blasting uses photogrammetry to search for inclusions and perform targeted blasting.
Fully automatic cleaning room consists of 2 blasting systems, camera systems, part loading/unloading systems, turntable systems and waste conveyors
Application No. 2 - Sandblasting of a cutting tool Cleans residues on tools such as wire saws that cut silicon ingots into silicon wafers. The thickness of the residual layer is very thin, but the area is large. Therefore, sandblasting equipment also needs special high wear resistance. The Verbelater (Group) pass-through pressure blasting system is the best choice for cleaning the residue on the surface of the sawing tool.
Sand-blasting with a three -application tool was used to blast clean the coating tools and supports used in the fabrication of solar films. These tools and supports were used to coat the conductive glass substrate with a photovoltaic coating.
Verbellat (Group) provides a sandblasting system for cleaning the above coating tools and supports. The system includes a large sandblasting chamber for the nozzle manipulator. The pellet recovery system is equipped with an efficient magnetic separation separation unit and a pellet sieve. Splitter.
In the application of the four photovoltaic industry, the processing and processing of raw silicon ingots is very complicated, and taking into account the high purity and utilization of silicon is the key. In order to recycle and recycle the recyclable silicon produced in the manufacturing process, Vilbertet (Group) provides a special cleaning system for searching for impurities and targeted blasting. After that, the cleaned silicon material can be re-melted to become a high-purity silicon that is repeatedly used. Manual cleaning methods are cumbersome, polluting, and costly. The Verbellat (Group) pressure blasting system has automatic and high wear resistance. Due to the direct spraying of silicon material, the wear and tear of the sandblasting equipment is quite astonishing, because the wear resistance of the equipment is extremely high. The solar cell industry requires very high purity silicon, and except for Verbeilet (Group), which has exclusive technology to ensure the high-purity cleaning requirements of recyclable silicon, no other manufacturer has yet reached the purity standard. Utilizing the highly automated compressed air blasting system of Verbelatite (Group) enables solar cell manufacturers around the world to make maximum use of expensive silicon raw materials to ensure the high purity of recyclable materials, thereby greatly reducing production and raw material costs.
Application 5 - VAQUA Wet Sandblasting Machine for Wafer Cleaning Before processing, all raw material surfaces must be thoroughly and properly cleaned, then melted in a high-temperature melting furnace to form silicon ingots through a crystallization process. The silicon ingot was cut and shaped to produce a silicon wafer.
Cleaning methods include mechanical blasting and chemical pickling. However, chemical methods and cleaners have high costs. More importantly, the treated wastewater contains a large amount of harmful substances that endanger the environment and health. Many manufacturers cannot solve the problem of emissions caused by chemical cleaning.
The traditional dry spray method, even with a high-performance dust removal unit, still cannot avoid the silica dust from contaminating the working environment. Dust remains on the surface of the treated silicon and reduces the purity of the silicon. In order to overcome these problems, the VAQUA wet blasting system was introduced by Verbelatite (Group). The system consists of a sandblast cabinet with a depth of 1200mm x width 1320mm x height 76mm. A built-in heavy-duty turntable with a diameter of 1067mm can be used for continuous cleaning. With high-efficiency cleaning ability, a cleaner surface, no dust generation, low consumption of pellets, and low wear on equipment.
The advantages of wet sandblasting silicon wafers: Due to the high cost of silicon raw materials, silicon ingots can be recycled to the maximum extent possible, and the purity of the recyclable silicon material is the key to save. Raw material costs. Utilizing the Welberlite (Group) wet blasting system, while maximizing the utilization of silicon, it can guarantee high-quality silicon ingots and wafers, enabling customers to obtain higher profits in the unit silicon.
ROMA 1080
Width : 1080mm
Efficient width : 940mm
Thickness : 2.0mm, 2.3mm, 2.5mm, 2.8mm, 3.0mm
Length : customized(times of unit length 328mm)
Purlin distance : 984mm
Aplication : villa, residential roof, etc.
Roma Roof Sheet ,Corrugated Roof Panels,Corrugated Plastic Panels,Corrugated Plastic Roofing
FOSHAN CHANCHENG XINGFA TILE INDUSTRY CO., LTD. , https://www.upvcsheetsupplier.com