• 30Dec

    Nano-tube energy density larger than lithium-ion battery

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    Currently, scientists are still often attempt to vacuum tubes (vacuumtubes) for micro-transformation, but not many success stories, mainly because of the kinds of glass packaging in most applications, the valve has been replaced by transistors.

    The University of Illinois at Urbana-Champaign (UniversityofIllinoisatUrbana-Champaign) researchers argued that vacuum tubes can be used to as a high-energy-density laptop battery, or non-volatile memory of the base; said that, in theory, nano-sized array of the energy density of vacuum tubes up to three times the lithium-ion battery.

    Researchers at the University of Illinois AlfredHubler with OnyeamaOsuagwu, published an article entitled: “Digital Quantum batteries: The energy and density of nano-tube array is stored in the” paper, but research is still theoretical, yet practical verification.

    The paper is based on the establishment of the presence of emission devices (field-emissiondevices) has clearly allows the study of current through the structure; authors claim that the field emission device of nano-level through appropriate design, be able to Electrical Breakdown (electricbreakdown) to quantum the phenomenon of compression; in the gap distance of 10 nm, under its capacitance is very large.

    The nano-tube array structure, the critical spacing is slightly larger than the 10 nm distance to the cathode, anode, cathode rules to vertical alignment, with today’s advanced lithography nodes fairly. Authors pointed out that the vacuum energy density is subject to a vacuum breakdown (vacuumbreakdown) is limited, but in atmospheric pressure below the 106torr circumstances, the electrical field would not rely on residual gas (residualgas), but with the electrode surface characteristics VGP-BPL11.

    Paper pointed out that the nano-tube energy / power density than lithium-ion batteries and electrochemical capacitors (electrochemicalcapacitors), the estimated weight per kg energy density up to 1-Mjoule, while the volume energy density per cubic meter up to 3-Gjoules. And this number of quantum battery (although it requires the number of 1 billion combined into an array of vacuum tubes), there are many other advantages.

    First, the tube can be a traditional wafer lithography technology and application of metal materials, silicon substrate to produce and can be done using silicon oxide as the insulating tube wall; the anode material is recommended for carbon nanotubes , cathode materials, you can use tungsten (tungsten). In addition, the battery can easily be integrated into the IC substrate, the chip that can be used as rechargeable VGP-BPS11 batteries.

    The vacuum tube array, there are other advantages, including its charge and discharge frequency will exceed all the other components; authors also pointed out that, due to nano-tubes can be maintained for several years without loss of electrical power, and therefore may be used as nonvolatile memory components.

  • 29Dec

    New light “paper battery” will be applied to the automotive sector

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    In the future, the production of batteries may be as simple as painting: when we need a battery, come up with “ink” drawing on paper of an on-line.

    Stanford University scientists claim to have successfully developed a paper VGP-BPS8 battery - just to a special layer of silver coated carbon nano-ink on the paper! So, what is the carbon nano-silver ink it? Simply put, this is a mixture of three kinds of material, single-walled carbon nanotubes, silver nanowire film and ink. Among them, the former two used to form a “battery,” while the ink is used to the first two fixed on paper.

    Scientists said that this paper has a high efficiency of the VGP-BPS8A battery, can achieve almost 10 times the notebook lithium batteries, but could be produced using ordinary paper, with low cost and lightweight characteristics, and therefore its application prospect is hard to imagine, for example said that it can solve the issue of troubled electric-powered vehicles until completely changed people’s lives.

  • 28Dec

    Panasonic mass production of 18650 high-capacity lithium-ion battery

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    Panasonic announced the development of the current used in computers, “18650″ size lithium-ion rechargeable batteries, high-performance products. Mass production was in December 2009.

    The company said it plans in the future by connecting multiple 18650 size battery, it also can be used for domestic battery and EV (electric vehicle). If you are using the newly developed VGP-BPS2 battery, such as for the EV, can be the quantity of batteries with less distance to ensure its endurance.

    A new battery “NCR18650A” In addition to cathode material with the original product “NCR18650″ use the same type of material other than nickel, as a security technology is also being equipped with heat-resistant layer between the anode (HRL: Heat Resistance Layer). HRL is configured with the diaphragm separately. The new VGP-BPS2A battery improved the original cathode materials and safety technology, as 18650 size battery to achieve the industry’s high capacity (3.1Ah).

    Voltage is the same as the original is still the same as 3.6V, but the volume energy density by 620Wh / L increased to 675Wh / L. Therefore, the current capacity increased from 2.9Ah to 3.1Ah, battery capacity from the 10.4Wh raised to 11.2Wh. Weight from 44g to 44.5g around about.

  • 27Dec

    Laptop battery life Extended

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    Another advantage of thin and light notebook is a longer battery life.

    Affect the length of notebook battery life when many factors, but primarily concentrated in the battery capacity, battery specifications in two ways. Notebook batteries used in the present there are mainly two - lithium-ion batteries and lithium polymer batteries.

    In fact, from theory point of view, lithium polymer batteries are lithium-ion batteries are still a kind of shape but finished speaking, notebook lithium-ion batteries commonly used in general have adopted the appearance of cylindrical batteries, so the weight of heavy, bulky, and the main used in traditional notebooks. The lithium-polymer battery (Li-polymer, also known as lithium polymer batteries), due to high energy density, small size, light weight, high safety and low cost advantages and therefore are more suitable for thin and light notebooks use.

    Traditional notebook uses lithium-ion batteries are mainly 3,4,6,9 cylindrical cores with different specifications, including the most common for 14-inch, 15-inch products on a 6-cell battery, the capacity ranging from 4800mAh ~ 5400mAh. However, in such a battery, the notebook’s battery life is only 2.5 ~ 3.5 hours, only to meet the electricity office to be a short time, such as participation in conferences or classroom records, if the user to be video games or play high-definition movies, the endurance time will be shorter.

    The ultra-thin lithium polymer batteries can be solved just right size and capacity problems. Thin and light notebooks are mostly used in lithium-polymer batteries used block design, the minimum thickness or even just a few millimeters, can be easily placed in the bottom of the fuselage, and the core components leave enough space. Terms of volume, a thin lithium-polymer battery 5600mAh of electricity can have, more than the same size of the traditional cylindrical batteries battery capacity increase of about double. Similarly, without any batteries or plug-in the case of powered equipment, most thin and light dell GD761 battery life can reach 5 hours or more, and even some of the products to reach 10 ~ 12 hours, rated as the most life notebook.

    It is worth mentioning that the lithium-polymer battery also has a very high security. First, it uses solid-state or within the colloidal electrolyte material, it will not happen the leakage of liquid electrolyte problems; the same time, for many of my friends worry about the battery explosion problem, we can very clearly tell you, lithium-polymer battery is no need to worry about the problems.

  • 25Dec

    New battery: laptop battery life up to 20 hours

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    Notebook stress that portability to facilitate our mobile office and learning, but due to the traditional laptop batteries in technical limitations, generally achieve only 2-4 hours or so of life, which for mobile office users to that there was really a headache.

    Today, however, Stanford University (Stanford university) introduced a new notebook dedicated lithium-ion battery (lithium-ion batteries), the success achieved for the notebook computer for 20 hours or so of life, if this technology can be fully promoted, it will the benefit of notebook users around the world.

    The researchers said the new technology to notebook lithium-ion battery materials have been updated, using more advanced materials to replace silicon very great before the carbon material, the release of the battery performance and storage capacity may be raised. This new type of lithium-ion battery technology can not only be used in notebook will be used in other portable devices, such as MP3, MP4, mobile phone, PDA handheld computers are likely to spend this new type of lithium-ion battery.

  • 24Dec

    At present the main power battery technology, performance and price comparison

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    Ni-MH battery with safety, cost and other advantages, has become hybrid (HEV) batteries power the mainstream; but the energy density of nickel-metal hydride batteries, efficiency and so low, is not suitable for hybrid or pure electric was severe vehicle battery power, while the lithium-ion batteries (including lithium cobalt oxide, nickel-cobalt-manganese, manganese oxide of lithium and lithium iron phosphate, etc.) by virtue of a higher specific capacity than the power characteristics is expected to become the future of severe mixed (to reduce fuel consumption over 40%) as well as the battery of choice for pure electric vehicles.

    At present the main power battery technology, performance and price-cost comparison

    The main components of electric vehicles is the motive power batteries, electric motors and energy conversion control systems, at present, which is a technical threshold of the highest power batteries, the most profitable part. According to NREL (National Renewable Energy Laboratory) statistics suggest that the current composition of the cost of new energy vehicles, power HEV battery cost accounting for 26%, slightly lower than the engine; for PHEV20 (pure battery mileage 20 km), the dell TD347 battery costs accounted for 39%, while for PHEV40, battery costs as a percentage cost of vehicles, up 51%; for the future of pure electric vehicles, power batteries are expected as high as 60%.

  • 23Dec

    Panasonic EVOLTA battery break world records

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    Matsushita Group’s development of EVOLTA battery-powered robot has three Le Mans race in France, the second to break the Guinness World Records. The laptop battery in January 2008 for the first time broke the world record, and known as “the most long-lasting AA alkaline batteries.”

    Competition, with the lead car with the infrared device in the back of the two participating robots AA batteries drive robot kept moving tricycle pedal pedal around the Le Mans race course within 24 hours of driving by 5.6 laps around 23,726 meters (about 14.82 miles). Guinness Book of World Records be described as “the longest battery-powered remote control model car.”

    The durability and up to 10-year shelf life of the dell GD761 battery, known since the first time available in April 2008 the Japanese market, the year 2008 to reach 180 million worldwide sales, Matsushita is expected in 2009 worldwide sales could increase to 300 million. It is learned from the TV remote class of low-current applications to digital cameras, high-current application of the class, are the product within the scope of application.

  • 22Dec

    Using conductive coating to change paper into the battery

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    There is a silver nanowires with carbon nanotubes with the composition of the paper batteries, can do for the portable device applications; study and claimed that, with this new dell XPS M140 battery is a disposable type can also produce according to the needs of different devices into a variety of Shape.

    R & D in the battery Stanford University (StanfordUniversity) Assistant Professor of Materials Science and Engineering YiCui his team, showing that can be applied to include the super capacitor (supercapacitors) to low-cost electrode.
     
    Battery parts and other conductive coating; Cui said that a few years the technology will be able to import a commercial.

    Cui said: “The paper can now be used as a substrate to create functional conductive electrode;”; his research team developed conductive paper made of a carbon nanotubes and silver nanowires containing a special nano-ink solution to coating; the kinds of paint will form a one-dimensional structure of the film, adhesion in the fibrous paper surface.
     
    Post-doctoral researcher at Stanford University with a special ink coating BingHu ordinary paper, so that the ink inside the nanotubes deposited on the paper surface, to create a dell XPS M1210 battery-coated paper after the paper will become a reservoir of high conductivity electrical components, The researchers will be followed by its plans to start charging LED; the kinds of batteries can store a charge, better than capacitors, although its current per unit of time (currentperunitoftime) are less capable.

    The researchers said that because of its high surface volume ratio (surface-to-volumeratio), the kinds of conductive paper also do super-capacitors for electric vehicles use; or which is part of a large array of rechargeable batteries at night storage supply network excess power, and then released during the day when the power went out redistribution.

    According to Stanford researchers tested, the kinds of paper can be repeated charge and discharge battery up to 4 million times, the performance of traditional lithium-ion batteries 10 times.

  • 20Dec

    Acer recall laptop battery

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    Recently, Acer’s European subsidiary, Packard Bell announced its 2007 sales of between 7-12 months EasyNote MX36/MX37/MX51/MX52 several batteries used in notebook recall.
    According to PC Marker said the existence of these models of internal short-circuit the acer laptop battery used in the hidden dangers that can lead to cell overheating and may cause a fire. However, media coverage has not been so hidden dangers caused by disaster.
    Packard Bell to remind users of their products in time to visit their official site, or call the company’s customer service hotline in order to ascertain whether the products purchased by their own will be the impact of such a battery failure, according to Packard Bell said that if the models find themselves the existence of such hidden dangers, users should immediately remove the laptop battery and uses a random power cord for notebook power supply.

  • 18Dec

    My summary of laptop battery usage

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    Just change the battery, a brief talk about the parity of the battery to use it, these strategies from the technology market, dell laptop repair department and technical support, you may have better methods, but this program is feasible.

     First use of the battery:

    Manufacturers will be retained as part of a new DELL laptop battery  in the battery, is used to verify the battery good and bad, and do not care about the first time the use of the battery to fully charge and discharge three times, although some sites say manufacturers have put away the battery charge, please do not believe The trick, no manufacturer would be an idiot to such a degree; also do not believe there is no memory effect Lithium-Ion battery, it is Che Dan, in theory, Lithium-Ion battery is a memory effect. So, obediently complete charge and discharge three times, the so-called fully charge and discharge refers to the charge to 100%, and then into the 3% ~ 5%, is called fully charge and discharge. It seems a bit different with the depth of charge and discharge, as to what is, I am not very clear, do not have to studied further.

    A long time no Battery:

    If you do not often use the battery, you can take off the battery placement, but every other period of time on the battery to a full charge and discharge, this time is between two weeks to a month, a comprehensive look at may be 20 days, Oh, reasons or because there is a lithium battery memory. Save when you remove the battery to let the dell Inspiron 5150 battery’s power kept at 40% ~ 60% of all can, avoid shorting or full-filled state, batteries stored in a dry place and away from heat and sunlight. In addition, there was an argument online is to prevent the voltage instability, the best has been stuck in the battery, which is holding the recommendations of the users of this classic, and now the notebook has a large capacitor to protect the voltage stability, unless there is power or a large voltage range, or books do not plug the battery is completely possible, rest assured.

    Always chips in Battery:

    If the fear of power, then you can always put the battery inserted in the books, in order to minimize the battery consumption, do not let the battery less than 95%, because more than 95% of the time, the battery is the micro-charging, that is, not be counted in that number of lithium within the charge, of course, even if the micro-charging, the battery life will also be some impact, it is proposed that, if not often power outages, you can consider the dell Inspiron 5160 battery brought down. At the same time, but also in between the half to fully charge and discharge once a month.

    These are my use of laptop batteries a summary, not to paste, so if there are problems, you can come to me directly to explore the issue of laptop batteries, I have intermittently been studies of 3,4 months, although not it could be like a veteran as DRY, but basically use what is already great deal of research, and write too much today, wanted to destroy as soon as possible and then how to write a laptop battery, limited space, the next write it.

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