Battery world

According to the person in charge of day Group Technical Center, Tin Group as the largest power battery manufacturers, by virtue of the absolute superiority of the accumulated technology and research and innovation in the traditional power battery, silicone battery is fully developed in recent years has finally fully launched. Comprehensive variety of market research results, silicone battery is bound to set off this day to launch a new wave of battery development trend.

It is reported that the silicone battery of the market by the day can be a newly developed state-level postdoctoral workstation products, imported from Germany's high-purity raw materials and independent research and development of nanoscale rare earth alloy developed from, compared to traditional lead-acid batteries, capacity is greatly increased, and the dosage does not increase the sales price does not rise to a point. In addition, compared to traditional lead-acid battery, its durability greatly enhance and last longer.

It is understood that the domestic famous brand electric car companies and electric vehicle companies adopting Tianneng silicone battery as its supporting batteries. The days can the cooperation of the silicone battery and electric car companies will jointly promote the development of Chinese electric car industry towards a brilliant new pinnacle.


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New energy vehicles refers to all other energy vehicles in addition to gasoline and diesel engines. Including fuel cell vehicles, hybrid vehicles, hydrogen powered cars and solar cars. Exhaust emissions low. According to incomplete statistics, the world has more than 400-10000 LPG cars, over 100 million natural gas vehicles. The Chinese market in the sale of new energy vehicles are hybrid vehicles.

China's new energy automotive industry [1] began in the early 21st century. In 2001, the new energy automotive research project was included in the national "10th Five-Year" period, "863" major scientific and technological issues, and plan strategy with petrol vehicles as a starting point, the goal of advancing to the hydrogen-powered vehicles.

"Eleventh Five-Year", China put forward the strategy of energy conservation and new energy vehicles, "Government attaches great importance to R & D and industrialization of new energy vehicles. In 2008, new energy vehicles in China has shown a full attack potential. 2008 to become China's "new energy vehicles the first year". January to December 2008 sales growth of new energy vehicles is the growth of passenger cars, 1-December new energy passenger car sales of 899 units, an increase of 117 percent, while commercial vehicle sales of 1536 units of new energy vehicles, January to December fell 17 percent.

In 2009, in the context of the intensive support policies, China's new energy vehicles to enter the fast track of development. Although the proportion of new energy vehicles in China's auto market is still minimal, but it is the growth potential in the Chinese commercial vehicle market has begun to release. In January-November 2009, new energy passenger car sales fell 61.96 percent, to 310. January to November 2009, new energy commercial vehicles - passenger car of liquefied petroleum gas, liquefied natural gas buses, hybrid buses, etc. - sales grew by 178.98% to 4034. Compared to the cold reception in the passenger car market, the "new energy vehicles in the Chinese commercial vehicle market has begun to rapid growth.

In 2010, China is stepping up efforts to support the new energy vehicles, and June 1, 2010, the state start in five cities including Shanghai, Changchun, Shenzhen, Hangzhou, Hefei, private purchase of new energy vehicles subsidy pilot. In July 2010, 10 City, one thousand energy-saving and new energy vehicle demonstration and promotion of pilot cities increased from 20 to 25. New energy vehicles are entering a comprehensive policy to support the stage.

"12th Five-Year" period, China's new energy vehicles will be officially entered the stage of industrial development :2011-2015, enter the industrial stage, the whole of society to promote new energy city bus, hybrid cars, small electric cars. Thirteen Five-Year "period that is, 2016-2020, China will further popularize new energy vehicles, multi-energy hybrid, plug-in electric cars, hydrogen fuel cell car will gradually into the ordinary household.

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A, 5.68 tons of standard coal saving of carbon dioxide emissions 14.7 tons
Two months away from China's first photovoltaic noise wall appearance Baoding formal grid. Two months, the PV soundproof walls cumulative generating 1.42 million kilowatt hours. China's first photovoltaic noise walls in addition to the role with the ordinary wall, light energy is converted to clean electricity, contribute to national environmental protection and energy saving.

Isolation, noise landscaping

May 9, the reporter saw a platoon of about 500 meters, about three meters high glass photovoltaic noise walls, erected on the east side of the road in three areas of Baoding Yingli, glass curtain wall in the sun shine, as a beautiful landscape. Across the road from two key laboratory under construction, but there is no loud noise in the park.

The staff, which is China's first photovoltaic noise walls. Compared with conventional sound proof walls, photovoltaic noise wall is all glass components instead of the ordinary insulation materials to achieve the effect of noise abatement.

Beautiful appearance of the glass curtain wall landscaping, decorative surrounding environment, and there is no geographical constraints, can be widely installed in the major trunk roads, with a relatively dense population of community, building in a bustling urban area factories on both sides of the road, effectively reduce or isolate the noise on the basis of the conventional noise wall function to make up for its major drawback.

Third, the energy saving is good economic

It is reported that the photovoltaic noise walls will direct conversion of sunlight into electrical energy, is the most environmentally friendly on the surrounding environment pollution-free, clean energy, to make some contribution for the state environmental protection and energy saving. March 8, China's first photovoltaic noise walls formal grid, two months, the cumulative power generation of 14,200 kwh, equivalent to saving 5.68 tons of standard coal, 14.7 tons of carbon dioxide emissions, 0.13 tons of sulfur dioxide, nitrogen compounds 0.057 t 0.1 tons of dust. Have a positive effect to purify the atmosphere and alleviate the greenhouse effect, global warming, reduce the frequency of acid rain.

According to staff, the within, Yingli Industrial Park, has three photovoltaic noise walls, available for part of the park electricity. Staff member explained that, in fact, the role of a kWh of electricity, it allows a 25-watt light bulb lit continuously 40 hours, the ordinary fans run continuously 15 hours, the TV open 10 hours, also irrigated farmland 0.14 acres, for electric bicycles to walk 0.86 km. Soundproof walls of the electricity delivered to the grid or soundproof walls surrounding populations used, the average national residential electricity prices of about 0.5 yuan per kilowatt, 14,200 kwh and a not to be underestimated cost, with high practical significance .

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Toxic and hazardous substances accounted for the majority of the composition of the lead-acid battery electrolyte sulfuric acid accounted for 16 percent of leaded substances accounted for more than 70% of these two substances on human healthgreat harm.

It is reported that the total production of lead-acid batteries in China, in 2006 approximately 72,414,000 KVAh, after the past few years an increasing trend. Into circulation of lead-acid batteries from the production, use, waste link, the hazards to humans and the environment will inevitably increase.

It is understood that a lead-acid batteries can be sold for 100 yuan, no one will lose, and are sold directly to small traders, most lead-acid batteries "outcome" is that the individual sold to small traders, small traders and then these waste lead-acid batteries sold to small smelter.

Lead-acid batteries have done great harm to humans and the environment, the face of the current lead-acid battery market recovery, the relevant departments should take measures to deal with recycling issues.

First, the relevant departments should rationalize the lead-acid battery recycling mechanism, the establishment of the lead recycling qualification examination system. The face of the relevant departments of the small traders in the recycling chain should be the introduction of recovery mechanisms and the quality audit system be investigated and dealt with the recycling chain improper prohibited waste battery recycling.

Second, focus on the development of recycling industry backbone enterprises. Meet the qualification requirements of the enterprise to the public directory, a virtuous circle. Recycling business, to build a strong strength of strong strength of the recovery of well-known enterprises, and eliminate consumer waste batteries bought for small traders.

Finally, the relevant departments of propaganda work, so that consumers understand the environmental hazards of waste lead-acid batteries, and consciously with a good lead-acid battery recycling.


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In the field of photovoltaic power generation, single crystal silicon and polycrystalline silicon photovoltaic cells photovoltaic mainstream technology, but this is neither of these defects. Monocrystalline silicon cell light fades and the high cost of power consumption is also high.

Polycrystalline silicon cells than monocrystalline silicon cells, low energy consumption, low attenuation, low cost, but poor conversion efficiency.

It is reported that recently, a cross between the polysilicon and monocrystalline silicon material appeared, that is quasi-single crystal.

It is understood that the quasi-single crystal, and these two kinds of crystalline silicon, it can be seen as relatively ordered atomic arrangement of polysilicon. It is casting crystallization polysilicon ingot furnace, through a series of advanced process to produce polysilicon films with high conversion rates.

Its main process is to increase the seed at the bottom of the polysilicon ingot furnace quartz crucible, and accurate segmentation of temperature control, to ensure that the seed part of the melt when the melting of the silicon material, which grow single crystals.

This technology with the high output of polysilicon ingots, high-quality, low-power advantages, the output of the quasi-monocrystalline silicon to the consistency of the grain boundary is significantly reduced, and the atomic arrangement is more orderly, the photoelectric conversion efficiency is also higher than a large cut of polysilicon. The advantage of these exciting, is industry R & D and production of quasi-single crystal of enterprise value.

Some experts said that the quasi-monocrystalline silicon ingots and ordinary polycrystalline compared with the following advantages:

1 cells, high efficiency, large-grain silicon (100) area of ​​more than 70 percent, with an average efficiency greater than 17.6%, 1.0% to 1.3% higher compared with the same line of ordinary polysilicon;

Yanguang the role of good pyramid structure on the surface texturing to reduce the reflectivity;

3 the average efficiency of the entire ingot from 0.5% to 1.0% higher than the conventional ingot.

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It is reported that the new areas of the University of Tokyo Graduate School of invasive research team led by Fujimoto Hiroshi, an associate professor into research institutes in collaboration with Mitsubishi Motors, has successfully developed a smooth driving on slippery road electric vehicle technology, in terms of stormwater sediment to or partially frozen roadcan be separately controlled front and rear drive car maintains the driving force to keep the body stable.

It is understood that the technology enables the front wheel is about to slip critical point, the rear wheels within a few seconds to reach the critical point, the implementation of the previous control ", that is forecast to skid adjust the current and the driving force. The technology uses independently driven front and rear of the car motor and a differential gear, the driving force can be adjusted so the car driving force can be consistent.

Driving experiments show that the use of the technology of electric cars and electric vehicles compared to impose gives the body's gravity decreased from 5% to 2.5% and significantly reduce the accelerated change to the physical swing.

The car started and suppression of accelerated time and space only for the switch to conduct research, but the torque to reduce the problem has not yet come up with solutions, experts in the future will be further studied to accelerate, turn the control technology, to make car travel more smooth and comfortable.


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A quasi-single crystal technology research and development points
First, the temperature gradient to improve. Thermal field of research and development to improved temperature gradient, but also pay attention to the protection of the thermal field; Second, the crystal kinds of preparation. The study found that quasi-Shan Jingjing kinds of preparation direction toward the super-thin direction; again melting accurate control. This link is very difficult to control, which determines the quasi-single crystal to stabilize production, and therefore requires a corresponding melt control equipment.

It is understood that in order to obtain stable control process, Phoenix photovoltaic development set for the quasi-single crystal seed melt control equipment, you can enter the stage of crystal growth at a 0.5mm; Fourth, the dislocation density. In many production processes, the efficiency of attenuation is always inevitable, the dislocation density in this control to the minimum, the key to this process; corner polycrystalline control, that is reasonable and effective control of the corners of the ratio of polycrystalline; Sixth, the ingot yield enhancement. Yield about 40% to 60%, to be improved.

(2) quasi-single crystal production decisive factor

The first is a viable process route. If developed the quasi-single crystal is not a viable process route, the quasi-single crystal products will be only at the laboratory stage; followed by the stability of the control method; Third, the precise melting control equipment; Fourth, the low cost of the transformation and production costs transition, that is, on the basis of the original ingot furnace, thereby reducing costs. Phoenix photovoltaic recently announced that the company through transformation GTSolarDDS450 model furnace, the successful realization of the global quasi-single crystal production, and cost less than crystalline silicon cells.

Quasi-single crystal is not only a viable means of highly efficient silicon ingot plant a way of reducing costs. Cost control problem is well known that the utilization of the battery components, silicon Czochralski silicon rod cylindrical shape, the production of photovoltaic cells need to be four weeks cut off rate of 50% to form a battery components finished or so. Comparison, the slice is at right angles to the square, quasi-monocrystalline silicon ingot square ingot production of solar cells to form a battery components yield of about 65%.

On the cost of the process, Czochralski monocrystalline silicon is 160 yuan / kg, while the quasi-monocrystalline silicon for 60 yuan / kg. Consider the total cost of the photovoltaic cells, and certain other costs of the silicon material, sliced, components under the premise of the entire production chain costs can be reduced by 10% due to the quasi-monocrystalline silicon ingot technology. However, the low cost of the technology to do not only need to master the technology and theoretical knowledge, skilled operation is also essential. A final factor that is, high reliability, the core performance of the products produced can withstand a big temperature difference.

Although the quasi-single crystal has the advantage, but the above-mentioned technical difficulties, and its development, there are many constraints, and need more technological breakthroughs to achieve long-term development.

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