The national 863 major project of the China National Photovoltaics (CEP) as the main undertaking unit has made important progress in the “Key Technology and Demonstration Production Line for Crystalline Silicon Battery Industrialization Based on High-Efficiency Back-Field and Back-passivation Technology for Over 20% Efficiency†project. Zhongdian Photovoltaic High-efficiency Battery has entered the batch trial stage since mid-September 2014. According to Fraunhofer ISE standards, the average efficiency of China Unicom's photovoltaic high-efficiency battery batch products reached 20.3% to 20.4%, and the single chip efficiency was 20.6% or more. Batch trial production was successful. According to the research team's introduction, the PERC high-efficiency battery of China Light and Power PV adopts a new battery structure design. Using ordinary solar grade silicon wafers, on the basis of ordinary battery production lines, only a small amount of equipment is added, and the battery conversion efficiency is 0.6%. 1% increase. Under this new technology, mass production of PERC high-efficiency batteries can be realized by upgrading and renovating the production line based on the existing battery production line, and the seamless docking of low-cost, high-efficiency solar crystalline silicon cells with existing production lines can be completed. Currently, trial-produced batteries are undergoing the preparation of component products, and subsequent component reliability tests and certifications will be performed. The overall objectives of the 863 project of China Light and Power PV are: "To master the complete sets of major processes and core equipment technologies for crystal silicon solar cells with an efficiency of over 20%, and to establish a demonstration production line of high-efficiency crystalline silicon solar cells with independent intellectual property rights and form batch products." It is planned to mass-produce high-efficiency battery projects with conversion efficiency of more than 20% by the end of 2014, further improve battery conversion efficiency, reduce power generation costs, and increase the cost competitiveness of photovoltaic power generation and conventional thermal power. This will firmly grasp the commanding position of the future energy industry. It is of great significance to form core competitiveness in domestic and foreign markets and promote the rapid and healthy development of new energy in the country.
Basically there are two types of Diameter Tape Measure, one is Pipe OD Tape Measure Diameter Circumference, another is ID (Inner Diameter) PP Tape Measure
Pipe OD Tape Measure Diameter Circumference
Product Description:
The 2-meter Pipe OD Tape Measure Diameter Circumference is made of reliable material to satisfy precise diameter measuring requirement.The reading for the perimeter, accurate to 1 mm. The tape is double sided with circumference (measures in cm & inch) and diameter (measures in inch & inch) on the either part. Pipe od tape measure adopts fiberglass tape to deliver water and stain proof effect and to ensure that it is of good elasticity for diameter measuring. The retracting mechanism is built in the durable ABS case, thus service life is extended. Wintape provides the diameter tape measure with other patterns and offers customized logo for you.
ID (Inner Diameter) PP Tape Measure
Product Description:
Inner diameter tape measure is made of PP material that is of excellent stress tensile strength and high elasticity. The scale numbers are already been calculated so the tape gives you the result directly without calculating. The practical ID measuring tape can be adopted in various ways such as pipe and container measuring. The double sided inner diameter measuring tape makes number reading easier and more convenient.
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