The photovoltaic power generation

The photovoltaic power generation

“Photovoltaic effect” that the photovoltaic effect canon bg-e6 battery grip, refers to non-uniform illumination so that the semiconductor or semiconductor-metal combinations of potential difference between the different parts of the phenomenon. Direct conversion of light into electrical energy in the process, namely photovoltaic power generation. Solar radiation intercepted by the Earth, only about solar energy capacity 3/10000000, but higher than the world’s generation capacity is also currently available is 10 million times. The light energy is converted to electrical energy converter canon eos 20d battery grip, is the solar cells. Solar cells formed by the semiconductor, whose main material is silicon.

On the other hand, domestic enterprises are located mostly to the back-end solar cells and modules production processes, while the main raw material for the production of crystalline silicon technology, now firmly in the United States, Japan, Germany and the hands of a few countries, 90% of domestic enterprises more than rely on imports. Crystalline silicon is highly dependent on overseas raw material supply, resulting in domestic solar PV industry in the global industrial vgp-bps2 , vgp-bps2a chain is located in the lower reaches of the profit can not be guaranteed. 2004 polysilicon material on the international market less than 40 U.S. dollars per kilogram, and now to buy 200 U.S. dollars per kilogram less than the international market, the export price of solar photovoltaic cells has remained basically unchanged, resulting in profits of domestic solar photovoltaic cells greatly ” shrunk “, some of the new production of the enterprises are facing a shortage of raw materials.

Some companies are trying to change this situation. It is understood that last year, Suntech to foreign deployment of the “troops” in the United States set up a branch, while Japan’s MSK Corporation acquisition of rival, and gradually extending to the marketing field of vision from Europe outside Europe for vgp-bps2b , vgp-bps2c. “Establish a complete industrial chain only the problem of ‘two out’ in an issue of raw materials, photovoltaic cell industry’s further development depends on the expansion of domestic demand in China to rely on countries to formulate a long-term development planning and introducing the relevant policy support.” 1 position in the industry source said.

laptop li-ion battery separator be more efficient

As international oil prices high,adapter for laptop more and more car drivers to take into account in determining the fuel economy, which directly led to a worldwide market share of hybrid vehicles rose. Expected that by 2012, U.S. sales of hybrid cars will be increased to 100 million. In order to meet the demanding needs of hybrid cars, laptop battery is key components – membranes must be improved, improve energy efficiency, thus providing more power for this vehicle, the courage to deal with the challenges of the world’s energy shortages.

The important role of the diaphragm is small

Due to the high energy density lithium batteries(xps m1330 battery,latitude d830 battery), long cycle life, light weight, small size and other characteristics, but also has a safe, reliable and can quickly charge and discharge, etc., to become the new power technology in recent years, the research hotspot in the field of high-energy and high-power reserved popular. In the lithium battery structure, the inner membrane is a key component of the. Diaphragm made of plastic film is able to isolate the battery positive and negative, in order to prevent short circuit; also be in the battery overheating, through closed-cell function to block cell in the current conduction.

Chemical’s chief polymer scientist said Bai Peide, lithium battery separator battery costs account for the cost of a / 3. Membrane determines the performance of the batteries(gd761,kd476) interface structure, resistance and so on, a direct impact on the battery capacity, cycle performance, and security features such as, high-performance membrane in improving overall performance of the battery has an important role. At present 60% to 70% of the membrane market, mainly in wet bi-oriented process, because the wet, bi-lateral vertical stretch more evenly balanced. It is mainly used for high-end diaphragm wet, dry method has been applied in the low-end products.

A huge global market volume

Global Li-ion battery production in the past 15 to 17 years has maintained an average of 10% to 20% growth rate from 2001 onwards, the average annual growth rate was as high as 40%. Rapidly growing lithium battery market, in addition to watches, and other one-time button-type batteries,inspiron b120 battery and inspiron b130 battery, as well as secondary rechargeable lithium-ion batteries. In addition to the current lithium ion batteries are widely used in daily well-known mobile phones, notebook computers and MP3 and other digital electronic products, in electric cars, electric bicycles and some other high-power batteries have also been started.

At present, countries are scrambling to develop electric cars, hybrid cars will need batteries to provide power, as a pure electric vehicles matching power supply, lithium-ion power supply for its outstanding performance, is becoming the core of the power type. As the hybrid line with today’s national energy development needs of a large environmental protection, consumption growth must be greater than 20%. Reason to believe that lithium batteries will eventually occupy the dominant position of secondary battery market, as its key components, the lithium battery separator huge market capacity.

Personality development to improve energy efficiency

Battery separator is mainly the development of lithium-ion batteries(inspiron e1705 battery,inspiron e1505 battery) with the evolving needs and continue to develop, from the volume point of view, lithium-ion batteries are moving in the small and large two distinct direction. In some, such as mobile phones, digital cameras and other electronic products, in order to meet the beautiful, easy to carry the demand on the battery batteries battery factory has been very small. In pursuit of high energy density, in the small size of the electrode can accommodate more material, the battery manufacturers want to divide the thickness of the thinner the better. Smaller diaphragm is a challenge because of the need to do a thin membrane, but to be able to maintain the original battery capacity, cycle performance, and security features, and greater power, the design easier.

By contrast, in electric bicycles, electric vehicles and electric tools used by power batteries, in order to obtain high-capacity, high-power, usually a battery need to use dozens or even hundreds of batteries to concatenation. Because lithium batteries have the potential explosion hazard, the safety diaphragm is important. Due to become bigger and bigger, technically demanding more efficient and reduce greenhouse gas emissions, power stronger.

Bai Peide convinced, lithium battery separator according to the different needs of different customers to develop targeted products, which divide the future trends. Although the divide is mainly single-market products, but Exxon Mobil has been able to put different materials on different membrane layers, each layer with different formulations vgp-bps2c battery of solvents and raw materials to multi-layer co-extruded to produce hot-melt thickness and diameter of hair, similar to divide and thus produce different properties of products, Bai Peide predict the future trend of multi-layer membrane is also obvious.

Still need to speed up the development of China

According to the Irish market research firm recently issued a lithium battery market forecasts show that China’s current production of lithium batteries as the world’s largest. In the global lithium battery production, the Chinese mainland accounted for 16.9%, China Taiwan region accounted for 6.9%. According to China’s Power Industry Association of Chemistry and Physics, Statistics, 2007 China Li-ion rechargeable battery production reached 1 billion.Affected by China’s lithium-ion battery separator market-oriented development has also begun to take shape, now showing a very good momentum of development. In accordance with the battery output of 1 billion is estimated that consumption of each diaphragm 300 million ~ 500 million square meters between the market value of 10 billion to 1.5 billion.

However, China’s research and development of lithium-ion battery separator got a late start, lithium-ion thinkpad t60 battery separator still mainly rely on imports, leading to the market price remains high. At present, only Japan, the United States and a few countries have a lithium battery separator production technology and the corresponding large-scale industry. China’s domestic market, over 80% of diaphragm were the United States, Japan and the occupation of imported products, domestic divide is mainly in the middle and low-end markets.

The future, China needs to strengthen the industry, academia, research inputs, to develop research achievements with independent intellectual property rights, breaking the Japanes and American enterprises in the membrane industry, technological monopoly; the other hand, enterprises and research institutes should strengthen cooperation, speed up the results The industrialization process of transformation.