IMEC epitaxial solar cells improves transformation efficiency

By admin, September 2, 2010 3:26 am

IMEC epitaxial solar cells use large area(70cm2) and high-quality substrate owns 16.3% conversion efficiency. Previously, low-grade basement area of the battery has received 14.7% of the conversion efficiency. IMEC has successfully doped in the high degree of quality and low cost base, senior metallurgical grade silicon substrates, obtained only 20 microns thick, high-quality epitaxial silicon stack.

“In the high-quality substrate gained 16.3% of the efficiency and cost efficiency of 14.7% of the basement show that the efficiency of industrial-grade can be achieved through existing technology.” IMEC solar energy project director, said Jef Poortmans, “through the use of copper-based access to programs, we can further improve the conversion efficiency, low-cost chip-type thin film epitaxial growth of silicon solar cells become a concern of industrial technology. ”

P +-type back surface field (BSF), p-type substrate and n-type emitter front formed by the chemical vapor deposition. Battery Light-harvesting methods in the epitaxial / substrate site of the former structure and the internal surface of porous silicon ion Bragg reflector combination has reached the light-harvesting purposes. In the high-quality solar cells used on the copper substrate contact with the program.

Low-quality base metal of solar cell technology using screen printing technology, the diffusion step is the formation of pre-form field and plated silicon nitride antireflection coating manufacturing process after the last step. The epitaxial growth of the equivalent chip substrate can be fully used in the standard industrial solar cell production process.

The principle of capacity batteries

By admin, September 1, 2010 10:15 pm

1) Use large volume of battery cells. Its surface is only a thin layer of foil paper, being removed the original battery’s plastic case, and the battery is right-angle side, batteries can be fully filled with the battery compartment. The volume of battery cells are large, and so the capacity is.

2) Improving assembly process, using a thin plate: plate size and battery capacity are related with the amount of active substance, the same size, the greater the thinner the plate area, the higher capacity; plate thinner high density assembly The plate, made of battery capacity will be high.

3) Improving formula.

Can we produce larger capacity batteries?

Battery capacity can’t enlarge freely. In materials, process, under certain conditions, the battery can provide the capacity per unit volume (volume capacity) is a basic fixed.

That is, what size batteries can only make a little battery capacity. Therefore the current capacity of the existing volume and technical conditions have reached their maximum.

Does a bigger capacity with same volume have any negative impacts?

Everything has two sides. so with thin plate, and the battery cycle life will be reduced. Such as the original can be reused 800 times, and now may only reach 650 or even 500 times.

Because the capacity becomes large, so the single-use time is longer multiplied. Overall life = the single standby time * the number, so the overall real life does not really fall into the half. And cycles is a complex issue, if used properly or take certain way, the battery life wouldn’t short than the original battery life.

The new cross-border energy alliance is unveiled in Beijing

By admin, September 1, 2010 4:58 am

On august 28 the “sustainable new energy League of Nations” compositing by the Eaton Corporation and the FOTON  inaugurated in Beijing.

In domestic car field, the new energy alliance is not uncommon, but it is the first international of the new energy alliancenational to break regional boundaries.

Currently a total of six companies joined the alliance, including the three U.S. companies and three Chinese companies. They are top companies with a considerable technological advantage in their respective areas at home and abroad. Of which IBM is the world’s largest information technology and business solutions company, AECOM is the world’s number one design company, Eaton Corporation is a world-renowned automobile transmission and a key component of new energy suppliers.

Foton is China’s largest commercial vehicle manufacturer in 2009, ranking the world’s first commercial vehicle sales. CITIC UNITA solid profit company is the largest lithium cobalt oxide cathode materials for lithium batteries and lithium manganese oxide production enterprises, but the ocean is the largest electrical motor manufacturing companies.

At the same time: Beijing auto design and manufacturing industry, new energy base has more than 50 patent applications, of which nearly 20 patents to meet green energy car R & D, design, trial production, the needs of various stages of manufacture, is the largest green Energy R & D center.

South Korea comes to an agreement with Bolivia in lithium resources resources

By admin, August 31, 2010 10:18 pm

It’s reported that South Korean President Lee Myung-bak on the 26th held talks with Bolivian President Evo Morales about the development of Korean companies in Bolivia lithium lithium resources and resources industrialization.

After the talks the two leaders attended the “resources on the Uyuni salt evaporation of industrial research and development Memorandum of Understanding” signing ceremony. The agreement was signed by Korea Resources Corporation and mineral mining company in Bolivia to sign, marks the Salar de Uyuni lithium resources development co-operation was officially launched. In addition, the request of the Government of Bolivia, Republic of Korea will also actively assist their economic development. The two sides agreed that, as of 2014, Korea will provide 250 million U.S. dollars in Bolivia Economic Development Cooperation Fund loans, and decided to Bolivia next year to include “shared development experience (KSP)” list of the main partner countries.

South Korean media spoke highly of lithium resources in Bolivia reached a joint development agreement called for the Korean government once again in the diplomatic resources to achieve victory. Reported that the Salar de Uyuni’s lithium reserves of 5.4 million tons, accounting for about half of the world. Earlier, South Korea, Japan, France, Brazil and other countries to compete for the right to develop the mine. Lithium is the manufacture of mobile phones, laptop computers, hybrid and electric vehicle battery is the core material, is to enhance the future development of South Korean forces to promote low carbon green growth is necessary for future resources. Lithium-ion battery is one of South Korea’s main R & D, Korea has the world’s lithium-ion battery-class advanced technologies. And the world’s largest producers of lithium ore resources of Bolivia signed a joint development agreement lithium, for the further development of South Korea in the future to create favorable conditions for lithium ion batteries.

Korean research institute predicts that the global battery output from less than 10 billion U.S. dollars last year to 12.3 billion U.S. dollars this year, 2020 will be significantly increased to 77.9 billion U.S. dollars.

11 tips tp extend your laptop battery life(part 2)

By admin, August 31, 2010 3:56 am

7. Don’t multitask – Do one thing at a time when you’re on battery. Rather than working on a spreadsheet, letting your email client run in the background and listening to your latest set of MP3’s, set your mind to one thing only. If you don’t you’ll only drain out your batteries before anything gets completed!

8. Go easy on the PC demands – The more you demand from your PC. Passive activities like email and word processing consume much less power than gaming or playing a DVD. If you’ve got a single battery charge – pick your priorities wisely.9. Get yourself a more efficient laptop – Laptops are getting more and more efficient in nature to the point where some manufacturers are talking about all day long batteries. Picking up a newer more efficient laptop to replace an aging one is usually a quick fix.

9. Set up and optimize your power options – Go to ‘Power Options’ in your windows control panel and set it up so that power usage is optimized (Select the ‘max battery’ for maximum effect). 15. Prevent the Memory Effect – If you’re using a very old laptop, you’ll want to prevent the ‘memory effect’ – Keep the battery healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-Ion batteries (which most laptops have) which do not suffer from the memory effect.

10: Turn off the autosave function. MS-Word’s and Excel’s autosave functions are great but because they keep saving regular intervals, they work your hard driver harder than it may have to. If you plan to do this, you may want to turn it back on as the battery runs low. While it saves battery life in the beginning, you will want to make sure your work is saved when your battery dies.

11: Lower the graphics use. You can do this by changing the screen resolution and shutting off fancy graphic drivers. Graphics cards (video cards) use as much or more power today as hard disks.

Beijing Issued Electric Vehicle Charging Station Standards

By admin, August 30, 2010 9:50 pm

Beijing’s first standard electric vehicle charging station has been released this month. According to the Municipal Quality Supervision Bureau, the electric car charging stations in Beijing will be devided into four levels. And the sites should not be in heavy traffic road.

“Electric vehicle power supply and protection of technical specifications: battery charging station” standard has been approved on July 7 to release. The new standards require that the electric car charging stations should be devided into four levels, of which the energy storage of the first level station should not less than 6,800 kwh, and a first station can generally be available in more than 200 large and medium commercial vehicles to replace or recharge the battery service , or 500 more times to provide passenger service battery replacement or recharge.

As for the charging station location, the new standards said that the site selection should take into account the size of vehicles and traffic laws, without affecting the function of the premise of the original facilities, appropriate with the existing public service facilities in building. In addition, the city should close within the urban road charging station, should not be set in the city roads with heavy traffic intersections and roads in the vicinity.

The responsible person of Beijing Municipal Bureau of Quality Supervision said that the technical guidance document for the city will soon start the construction of the space bridge, Ma F, small business, the four benefits, etc. to provide technical basis for charging stations, establishment of planning and design and construction of building unit shall be in accordance with the standards.

11 tips tp extend your laptop battery life(part 1)

By admin, August 30, 2010 4:54 am

1. Defrag regularly – The faster your hard drive does its work – less demand you are going to put on the hard drive and your battery. Make your hard drive as efficient as possible by defragging it regularly. (but not while it’s on battery of course!) Mac OSX is better built to handle fragmentation so it may not be very applicable for Apple systems.

2. Add more RAM – This will allow you to process more with the memory your laptop has, rather than relying on virtual memory. Virtual memory results in hard drive use, and is much less power efficient. Note that adding more RAM will consume more energy, so this is most applicable if you do need to run memory intensive programs which actually require heavy usage of virtual memory.

3. Keep the battery contacts clean: Clean your battery’s metal contacts every couple of months with a cloth moistened with rubbing alcohol. This keeps the transfer of power from your battery more efficient.

4. Take care of your battery – Exercise the Battery. Do not leave a charged battery dormant for long periods of time. Once charged, you should at least use the battery at least once every two to three weeks. Also, do not let a Li-On battery completely discharge. (Discharing is only for older batteries with memory effects)

5. Hibernate not standby – Although placing a laptop in standby mode saves some power and you can instantly resume where you left off, it doesn’t save anywhere as much power as the hibernate function does. Hibernating a PC will actually save your PC’s state as it is, and completely shut itself down.

6. Keep operating temperature down – Your laptop operates more efficiently when it’s cooler. Clean out your air vents with a cloth or keyboard cleaner.

5 Notes for Car Maintainance

By admin, August 29, 2010 10:48 pm

1, Car body is not just for aesthetic

In autumn,with heavy dew and rain, the surface of car is wet, if the surface has a clear scratch, then the car need comprehensive maintenance, in order to avoid accelerated corrosion under wet conditions. So the first step in autumn maintenance is to do a clean car surface, polishing, waxing, full beauty.

2, Tires need reinflate in time

During the summer, skilled owners will deflate the tire a little to prevent the risk of tire punctured in high temperature. In fall the temperature is relative lower, so you need to add tire pressure to maintain the required pressure range.

3, Engine – examine the oil brake fluid antifreeze

When used for a period of time, especially experienced long-distance driving a car out, engine deposites a layer of sludge inside. It will cause the engine to increase fuel consumption, power down or even damage the engine.

You also need to check the oil of the engine compartment, brake fluid and antifreeze.

4, Battery – be carefully to green oxide joints 

Battery in the autumn is the most error-prone areas, if it does not work, the engine will have problems. No long-term parking the battery will discharge naturally, overload will also affect the results. In addition, the aging of the battery electrode wiring to be generated when the green oxide of oxides of these green power shortage will cause the engine. If you see the green battery wiring to sediment quickly flush with boiling water, then dried, sprayed the repellant to prevent oxidation protection layer.

5, Air conditioning – you’d better take it to specialty store for maintainance
Long hot summer for air conditioning in the overload phase, air-conditioning condenser and radiator cooling line had gathered a lot of impurities, does not clean up in time, will shorten the life of air conditioning, and easy to breed bacteria and odor generated inside the car caused visible mold . If the air filter dirty, the best replacement, the effect will be that much stronger. Air conditioning cleaning and dismantling of the technology and tools required slightly higher, if inadvertently lead to deformation of internal components, the proposed owners of the best shops to car maintenance, please clean professional workers.

6 notes for you to choose electric vehicle batteries

By admin, August 27, 2010 11:37 pm

1, Check electric vehicle batteries signs, including the manufacturer name, model or specifications, date of manufacture, trademark, polarity symbols, signs and other environmental protection. Check the consistency of internal and external signs, in particular, to check whether the product itself striking logo because the quality control departments in the detection is based on the product itself identified.

2, Pay attention to the appearance of electric vehicle batteries if they have deformation, cracks and scratches, if the signs are clear.

3, Pay attention to the electric vehicle battery rated capacity. The larger the battery’s rated capacity marked on the product, the longer the battery discharge. You’d better not to buy non-rated labeled cells.

4, Buy automatic intelligent charger that matchs with the battery, because it can automatically adjust charge size and time, and it is help to extend battery life. Purchasing power type battery, because power accumulator discharges higher electricity than the start accumulator and longer life as well.

5, Pay attention to the battery pollution. It’s best to buy and use clean non-cadmium batteries to prevent the harmful effects of hazardous substances. It is recommended to put the used battery to recycling sation and don’t throw away in case of the environmental and food pollution.

6, Keep a watchful eye on  product quality control information issued by relevant departments. Know some knowledge of battery  purchasing, use and maintenance.

7 tips for battery usage

By admin, August 27, 2010 8:51 pm

1. Please check your original Laptop battery’s part number, Laptop battery model number with our postings and picture before the purchase to make sure you get the correct battery.

2. Fully charge this new laptop battery pack before use. New laptop battery pack needs to be fully charged and discharged (cycled) a few times before it can be conditioned to full capacity.

3. For longer this battery life, turn down the LCD brightness of your laptop.

4. Rechargeable laptop battery undergoes self-discharging when left unused. So your should store the laptop battery pack in a fully charged stage.

5. Fully drain and fully recharge this laptop battery pack every few months.

6. Don’t short circuit the terminals or store laptop battery pack with metal parts.

7. Proper Laptop Battery Care:

The battery should be re-installed every 3-4 weeks and allowed to fully discharge. Leaving a battery in storage for longer than this without using could cause the laptop battery to fully discharge as the circuitry of the battery itself consumes power.

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