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EGing PV
EGing PV
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| EGing has been growing with the same business model of vertical integration since its founding. Over time, this business model has been proven successful and will continue to have a competitive advantage. We believe that operation under one roof provides more than rigorous control of quality, supply chain convenience and competitive cost structure. EGing’s experience in all value chain of the PV industry allows it to further enhance operation excellence in all manufacturing steps and provide customers with more added values. |
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Silicon Materials |
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Wafer cutting |
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Cell preparation |
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Module Packaging |
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Systems Engineering |
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Polysilicon or simply poly is a material consisting of multiple small silicon crystals. Polycrystalline silicon can be as much as 99.9999999% pure. It is most often mixed with oxygen in sand form. In today's industry, pure silicon is either obtained via the Siemens process or, sometimes, though the fluid bed reactor (FBR) technology.
Semiconductor grade polysilicon is converted to "single crystal" silicon - meaning that the randomly associated atoms of silicon in "polycrystalline silicon" are converted to large "single" crystals of silicon. Single crystal silicon is previously used to manufacture electronic devices. The applications can be found in almost everywhere in our daily life from the cell phone you use to large air craft.
Polysilicon is also a key material for solar modules. The photovoltaic solar industry is growing rapidly and has replaced semi-conductor industry as the main consumer of polysilicon. But the requirement for silicon purity is not that demanding compared with semi-conductor industry. It is most commonly referred to as ‘solar grade silicon'. Previously, polysilicon production is mainly dominated by a few global manufacturers including REC, Hemlock and Wacker. In recent years, a handful of companies, most of them Chinese ones, have joined the silicon club by launching polysilicon manufacturing plants. |
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Silicon Materials |
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Wafer cutting |
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Cell preparation |
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Module Packaging |
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Systems Engineering |
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Once an ingot has been grown it is then sliced up into wafers. Silicon wafers are sliced from the ingot using Wire saws. The Wire saws are more efficient because it is able to slice the entire ingot with one step. In the past few years, solar cell wafers thickness has gone through from over 300μm to 200μm. The trend in the PV-industry is to further reduce the thickness and to reduce the kerf loss while maintaining and even improving the high surface quality. Immediately after slicing, the wafers are cleaned in a series of chemical baths to remove stains. All wafers are then sampled for mechanical parameters. Through partnerships with top equipment manufactuers, EGing manages to reduce the production cost while ensuring the homogeneity of the thickness and the quality of wafers. |
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Silicon Materials |
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Wafer cutting |
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Cell preparation |
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Module Packaging |
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Systems Engineering |
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A solar cell is a device that performs the immediate conversion of light into electrical energy via photovoltaic or photochemical effect.
EGing’s mono-crystalline silicon solar cell production line adopts automation on all processes of cleaning, diffusion, PECVD, etching, printing, and sintering. Under strict control over the entire processes, our yield of high class cells reaches above industry average level. Cell sizes of EGing come both in 125 mm and 156 mm.
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Silicon Materials |
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Wafer cutting |
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Cell preparation |
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Module Packaging |
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Systems Engineering |
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Solar modules are packaged by solar cells and other accessories including cables and junction boxes. The modules can be in different sizes and configurations according to customer’s requirements.
Partnerships with leading industrial players endow EGing with the latest techniques and know-how for modules manufacturing. All our manufacturing staff are required to go through on the job training and rigorous testing. Together with the international standard quality management system, they deliver high and stable efficiency modules at competitive costs to our customers. |
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Silicon Materials |
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Wafer cutting |
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Cell preparation |
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Module Packaging |
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Systems Engineering |
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Solar (photovoltaic) independent power generation system includes solar cell arrays, batteries, power controllers, DC/AC inverters, power transmissions and distributions, low voltage power distribution networks and DC/AC loads.
Solar cell arrays output electricity under the sunshine, and through reverse－charging preventive diode charges the batteries and provides electricity to DC load; meanwhile the output current of the array and the battery is switched into the inverters’ DC input terminals via a controller，and the power is distributed to AC load by a distribution board．In continuous overcast or rainy days, power output from the solar cell arrays cannot reach the load for normal power supply. At that time, the battery will supply power to the load via inverter，Moreover, in order to monitor the performance of the entire system and operation of the equipment，this system can also be equipped with monitoring system．
Nowadays, Solar (PV) independent power generation systems are widely used in transportation, communication, telecommunication, oil and marine industries.
Solar (PV) grid-connection power generation system uses power networks as storage units without battery storage function. The system utilizes solar cell array to converse solar energy into DC current, which is inverted into AC current via grid-connection inverters. The AC current is distributed into power network for power generation.
Thanks to government’s subsidy policy for network power price in grid-connection system, solar (PV) grid-connection power generation system has been developed rapidly, and applied in various fields, such as roof grid-connection power generation and grid-connection project in spare space. |
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