Solar photovoltaic webex: preliminary forming, in 2019, the New Deal in & other; Comprehensive bidding & throughout; Under the theme of photovoltaic enterprises more competitive, the photovoltaic industry chain all into acceleration period of authors and efficiency increasing. Photovoltaic modules as the core of the photovoltaic power station system, the importance is self-evident, its & other; Competitiveness & throughout; And wafers, cells, and closely related to the component encapsulates each link. What technology is the first selection of affordable Internet environment? And photovoltaic products from the current each link of some advanced technology.
silicon wafers in the upstream of pv modules production link, in the cost of component accounted for 35% 40%, enhance silicon technology to reduce cost, make more leading products are of great significance.
the technical route mm large size monocrystalline silicon is hot recently under enterprise with the latest technology, including ja solar, crystal, trina solar, golden concord and other first-line enterprises are involved in. Ascension wafer size makes the product more by light area, thus improve the output per hour of power batteries, components, make contribution to the cost of equipment, human and other per Wp, system costs have been reduced.
although large size wafer can bring the ascension of power, but also is one of key points, to find the right size by measuring, 158. 75 mm silicon wafers to the modification cost of each section of the component is the lowest, compared to larger wafers are easier to implement, can make the overall costs down, which is why the majority of enterprises to choose 158. 75 mm the size.
cell is a core part of photovoltaic components, its performance directly determines the components of the power and efficiency levels. The current advanced solar cell technology court photovoltaic market, all kinds of products are a distinct advantage.
in the above technologies, the PERC technology is the most mature and efficient battery technology, and the PERC batteries and multiple component technology, the combination of overlapping double double glass, half piece, MBB, imbricate, such as technology, can achieve a higher power.
the PERC, IBC, HJT, MWT, TOP Con, and many other technology is also active in the market. But as for the development of the market at present, HJT battery is subject to the cost of production, localization of progress and incompatibility, and other factors of production line. Of the high cost of the IBC cell when the batteries cost 2 times, the large-scale development also needs time.
for photovoltaic enterprise, higher efficiency, lower electricity cost is undoubtedly the best way to achieve parity with access to the Internet, this also for photovoltaic modules of technology and the reliability higher requirements are put forward.
in recent years, many enterprises will be more effective technology route and overlap with battery products, realizing 1 + 1 & gt; The effect of the two. In the above silicon - Cell - Components in the chain, each link of efficient technology stack whether can produce optimal combination? In fact, efficient battery component technology application and promotion, and its technical maturity, implementation, production speed and is closely related to the production cost.
in the above, the MBB technique recently frequently appear in the public eye, relative to the current mainstream of 5 bb products on the market, its main gate features can reduce broken gate, cracked effect greatly, especially the nine main grid technology, is to increase power and reduce the optimum design of series resistance, while increasing the battery by light area, also can significantly reduce silver paste consumption, will improve 5 - power components 10 w, eventually reduce the degree of electricity costs.
MBB technology roadmap in gradually rise, the products on the environment adaptiveness, the combination of series-parallel circuit design makes the battery internal power loss is reduced, with higher conversion efficiency and better temperature coefficient, even obscured half, there are still 50% of its power output.
half piece and imbricated is nearly two years the rise of new products, compared with the conventional component production process, and a half piece of component simply add laser scribing device, will complete before series welding cell in two, full automatic lobes and transmission, and the string of welding machine with a little modification, mass production can be realized, is a component on the new production line and the preferred direction of the old production line upgrading.
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