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电机节能撬动变频器大市场
addtime:2012-4-8 0:12:14        URL:EPOWER
Solar power into the battery technology of crystalline silicon and thin-film battery technology. In recent years, photovoltaic solar energy industry is the rapid development of the same carrier for solar power, thin film batteries with photovoltaic cells compared but development is slow. Why thin film battery has not been taken seriously?
Industry Insights: the turning point of the thin film battery

The world's largest silicon thin-film producers landing in Hainan

Hainan Han silicon thin film solar R & D and manufacturing base was officially put into operation in a 29, the thin film solar production capacity of 2 million kilowatts, the world's largest manufacturer of silicon thin film. This gave rise to a series of discussions on the thin-film solar cells.

What are the advantages

Solar power into the battery technology of crystalline silicon and thin-film battery technology. In recent years, photovoltaic solar energy industry is the rapid development of the same carrier for solar power, thin film batteries with photovoltaic cells compared but development is slow. Why thin film battery has not been taken seriously?

"The key is the lower threshold of crystalline silicon cell technology, the most mature technology, high cell conversion efficiency." Han Holding Group Chairman Li River Jun says, "But silicon, silicon materials for battery need to consume more power. ", according to estimates by experts in the areas of China's medium-light conditions, install a 1 MW solar photovoltaic power generation system can generate about 1.2 million kwh; 1 MW crystalline silicon battery power consumption for more than 3 million kwh in the production process, that is, 3 years in order to balance its own power consumption. Thin-film battery in the production process energy consumption is small, the battery is put into power generation, electricity a year and a half can make up to the energy consumed in the production.

Crystalline silicon cells in the production process of high energy consumption, high pollution problem is also very prominent. At present, China's polysilicon production process is modified Siemens process, on the basis of the traditional Siemens process improvement, able to recycle a large amount of byproducts, but to produce one unit of polysilicon products will generate more than 10 units toxic and hazardous by-product of silicon tetrachloride liquid waste, the ecological environment of industrial waste will cause damage difficult to restore. Processing of silicon tetrachloride need to install the recycling equipment, but not all companies can do. According to Professor Zhou Lang, Nanchang University, photovoltaic, Dean of, the majority of polysilicon enterprises to achieve cleaner production, but there are some enterprises have yet to master the recycling technology of silicon tetrachloride, it is estimated that the proportion of about 10%. In April of this year, 600 tons of silicon tetrachloride liquid waste the Zhongxiang urban drainage network into the sewage treatment plant, sewage treatment plant biological species all death, serious damage to equipment, sewage treatment plant so paralyzed for more than two months.

In environmental protection "and thin film batteries significantly more than crystalline silicon cells." According to Li River Jun, compared with crystalline silicon cells, thin film batteries can reduce 97% of the silicon raw material use, which the root causes of making thin-film battery more environmentally friendly, green, at the same time of dependence of the silicon raw material, its manufacturing cost is also much lower than crystalline silicon cells. Glass, stainless steel and special plastic substrate thin film batteries can also be made of flexible batteries on request, to further expand the applications.

Has the characteristics of thin film batteries can be widely used in remote monitoring communications, and field power supply; also due to the use of plastic and other lightweight soft material as the substrate, thin film batteries for watches, calculators, curtains or clothing. In the near future, when you out of town or office, will carry the thin-film solar panels Shop on any place that can be exposed to light to, you can power mobile phones, computers and other equipment.

In addition, thin film batteries are more stable performance in hot weather conditions. Related tests indicated that the thin film batteries in 50 ℃ direct conditions, the energy efficiency up to 3% to 5% reduction in energy-efficiency crystalline silicon cells at the same temperature will be reduced by 15% or more. According to experts, based on this performance of thin film batteries, when used in Xinjiang, Chongqing and other areas with high summer temperatures, and its role will be considerable.

Moreover, low-light power generation of thin-film batteries, the absorption of visible light than crystalline silicon cells, and its extensive power generation. Thin film batteries to adapt to various intensities of sunlight, so its performance is less affected by weather and can also generate electricity in the morning and evening.

The 12th Five-Year Plan of the photovoltaic industry will support the thin film battery

"12" solar photovoltaic industry development plan will be introduced. It is understood that the thin film battery was in an awkward position in the "planning" in the draft, received unprecedented attention.

Great importance to the development of thin film batteries echoes, June 15, Han Holding Group in Shuangliu County, a silicon thin film battery production base put into operation, to become the world's most productive film battery production line with the "planning". This may be a prelude to the thin-film battery industry in China back to life.

Turning point perhaps appears

Up to 14% ~ 16% conversion rate of the crystalline silicon cells, but the cost to 30% more expensive than thin-film batteries; and thin film batteries, although the price is low, but the conversion rate is only 6% to 8%, much lower than crystalline silicon cells Zhou waves told reporters that these thin-film batteries is technically no significant progress, the conversion rate was maintained at between 6% and 8%, resulting in thin film battery market could not be opened, the large-scale production has not been able to achieve. Therefore, the support of relevant national policies for the development of thin film battery industry is vital.

It is understood that the share of thin film batteries in photovoltaic solar energy market in China is less than 10% in 2008, the capital market in 2009 was once sought after by film concept, but now have been gradually cool, a lot of thin-film battery production enterprises is a serious lack of funds, no longer Following. In August 2010, Suntech announced the end of the thin film solar panel production planning in Shanghai, transformation of crystalline silicon cells, has triggered a paranoia of the film battery industry.

Suntech, a spokesman told reporters that the thin film batteries in trouble because after the financial crisis in 2008, the polysilicon price dropped from $ 400 / kg to 50 U.S. dollars / kg, and directly lead to substantial cost of crystalline silicon cells decline, narrowing the difference between the thin film battery. Thin film batteries from 2008 to date on the technology and cost are not progress, therefore, become increasingly competitive with crystalline silicon cells decline.

The upcoming "12th Five-Year solar photovoltaic industry development plan proposed in the" 12th Five-Year "period will focus on the development of amorphous and microcrystalline combination of laminated and multi-junction thin-film batteries. In order to reduce light-induced attenuation of the thin film battery, the "planning" to encourage business R & D 5.5 on behalf of a large area of ​​high-efficiency silicon-based thin film batteries, the development of flexible silicon-based thin-film batteries. A participate in the program developed by experts, said the above in order to promote the industrialization process of thin film batteries, belonging to the timely help move the thin-film battery industry in China in the cold, such as the state does not appear to support, is likely to be a comprehensive destruction. "It is understood that converting or shutdown, power plants, either in the domestic film battery manufacturing plant arrival of these enterprises is not only low yield, no inventory, even equipment not entirely, due to a lot of thin-film battery manufacturers.

"As long as Suntech, Yingli, the strength of large enterprises to enter the goal of revitalizing the thin-film battery industry is not difficult." A state-owned power generation groups said, the thin film battery is not without prospects for development, its low cost and resistance to harsh environments The advantage of very competitive, which is the world's largest thin-film battery manufacturer, the first U.S. solar company's success. It is reported that the first U.S. solar company's products average conversion rate has reached 11.7%, the test battery conversion rate of 17.3% in R & D, financing and other aspects of the thin film battery manufacturers in the "12th Five-Year" period, the State a reasonable subsidies, the thin film battery market in China is not far away from the open the day. "

Earthquake in Japan lead the world to re-examine nuclear power development policy, but also enables governments to significantly enhance solar power goals. The goal of China's solar power has improved, is expected in 2015, the domestic photovoltaic power generation capacity target to reach 10 million kilowatts by 2020, the goal of at least 50 million kilowatts. In accordance with the requirements of the "planning", 2015, the conversion efficiency of monocrystalline silicon battery industry to achieve 21%, 19% polycrystalline silicon cells, amorphous silicon thin film battery to reach 12%. In addition, thin film batteries, such as the "Renewable Energy Development" 12 "Planning", the next five years, our rooftop thin film batteries installed capacity target of 3 million kilowatts, up to 25 million kilowatts by 2020, in on the basis of 300,000 kilowatts, an increase of 80 times, accounting for half of the medium-and long-term goal of the solar power.

It should be said that the thin film batteries is limited by the optical conversion efficiency and other technical indicators of disadvantage, for a long period of time will not shake the status of crystalline silicon cells, but as the country's support the introduction of the policy and technology research and development to speed up and rooftop thin-film battery in the future large-scale construction for the thin film battery industry long-term disadvantage in the photovoltaic industry, the dawn of dawn or will appear.

Thin film batteries rise of 100 billion market

Renewable energy development "12th Five-Year" plan ", the roof of the next five years of solar energy installed capacity target of 3 million kilowatts by 2020, up to 25 million kilowatts, 80 times growth in the current on the basis of 300,000 kilowatts, accounting for Solar power for half of the medium and long-term goals.

Industry analysts believe that with the large-scale construction of rooftop photovoltaic power plant in the future, relatively more suitable for thin film solar rooftop power station component market is expected to usher in development opportunities, the size of this market over the next 10 years or up to 100 billion yuan or more. Had generally not been promising thin film solar cell module providers are expected to enter the results of substantial growth in the channel.