A charge time of a few hours is acceptable for most users

June 24 [Mon], 2013, 16:32
Battery manufacturers are tooling up for the electric vehicle, but what would happen if it failed? Could there be a déjà vu of the fuel cell in the 1990s, or the bio fuels in the last decade that cannot survive without heavy government subsidies? The US Department of Energy (DOE) has admitted that some critical 586029-001 high quality parameters of Li-ion are not met. Newer NiMH batteries, which are cheaper and safer than Li-ion, are also suitable for the electric powertrain but these mature systems are often excluded from government grants for research.

There are no ideal contenders for the electric powertrain, and lithium-ion remains a good choice. Out of the five candidates illustrated in Figure 1, Li-nickel-manganese-cobalt (NMC), Li-phosphate and Li-manganese stand out as being superior. The popular Li-cobalt (not listed) used in consumer products was thought to be not robust enough; nevertheless, this high energy dense “computer battery” powers the Tesla Roadster and Smart Fortwo ED.


The illustration compares batteries in terms of safety; specific energy, also known as capacity; specific power, or the ability to deliver high current on demand; performance, the ability to function at hot and cold temperatures; life span, which includes the number of cycles delivered as well as calendar life; and finally cost. The figure does not mention charge times. All batteries offered for EV powertrains can be charged reasonably fast if a suitable electrical power outlet is available. A charge time of a few hours is acceptable for most users, and super-fast charging is the exception. Nor does the table reveal self-discharge, another battery characteristic that needs scrutiny. In general, Li-ion batteries have low self-discharge, and this parameter can mostly be ignored when the battery is new. However, aging when exposed to heat pockets can increase the self-discharge of the affected cells and cause management problems. Among the EV battery candidates, Li-phosphate exhibits a higher self-discharge than the other systems.

None of the five battery candidates in the figure above show a significant advantage over others, and the size of the spider fields are similar in volume, although different in shape. Focusing on one strong attribute Pavilion G42 high quality inevitably discounts another. NCA, for example, has a high capacity but presents a safety challenge, whereas Li-phosphate is a safer system but has lower capacity. In the absence of a clear winner, car manufacturers include peripherals to compensate for the deficiencies.

Battery manufacturers in turn assist by custom-designing the cell to strengthen the important characteristics needed for the application. Here is a brief summary of the most important characteristics of a battery for the electric powertrain.

These measurements could then guide researchers

March 14 [Thu], 2013, 17:27
As the battery is charged and discharged, Li, originally present in the electrolyte and in the positive electrode, chemically reacts with one or the other electrode, inserting or intercalating into the bulk material. This transport andbuy Presario V600lithiation process changes the chemical identity of the electrode particles, so the properties of the Li-ion battery depend critically on the chemical nature of the electrode material.

Since, by definition, Li is thermodynamically more stable in the positive electrode, a power supply is required to detach Li from the positive electrode (often a transition metal oxide or phosphate) to form Li+ ions and then to push them into the negative electrode (usually, as here, a graphite or carbon composite) for charging. Because lithium reacts with practically everything, the number of potential lithium-ion battery electrode materials—and, therefore, the number of potential lithium-ion battery types—is almost limitless.

In an ideal Li-ion battery, the only process that should occur at the mesoscale (smaller than an electrode, larger than a molecule) is transport of lithium ions through the electrolyte and in the active particles, accompanied by reversible reactions of lithium at appropriate locations within the electrodes. All of the seemingly disparate mechanisms of battery degradation and failure lead in some way to inefficiency or irreversibility of these fundamental transport and associated chemical processes.

Our work is predicated on the notion that a general study of degradation and failure can begin with measurements of Li transport and insertion into porous electrodes in the battery. These measurements could then guide researchers towards other experiments and models that provide fundamental knowledge of durability (aging, degradation and failure) using advanced diagnostic techniques.

Such techniques include (1) in-situ measurements of operating batteries or electrodes at the micro and meso (smaller than an electrode) scales; (2) measurements made in 3 dimensions (3D); and (3) models that takbuy A32-X64e into account microstructural properties and inhomogeneities. With this goal in mind, we have undertaken this research on lithium battery durability, and especially transport in lithium batteries,that is required to understand and predict lithium transport at the mesoscale.

Chemical instabilities limit their lifespan when recharging

October 24 [Wed], 2012, 11:12
ONE of the biggest drawbacks with owning an electric vehicle (EV) is range anxiety - a driver's nagging fear that the replacement battery for 513775-001charge will not get them to their destination. Now IBM claims to have solved a fundamental problem that may lead to the creation of a battery with an 800-kilometre (500-mile) range - letting EVs potentially compete with most petrol engines for the first time.

Standard electric vehicles use lithium-ion (Li-ion) batteries, which are bulky and rarely provide 160 kilometres (100 miles) of driving before they run down.

A newer type, known as a lithium-air cell, is more attractive because it has theoretical energy densities more than 1000 times greater than the Li-ion type, putting it almost on a par with gasoline. Instead of using metal oxides in the positive electrode, lithium-air cells use carbon, which is lighter and reacts with oxygen from the air around it to produce an electrical current.

But there's a problem. Chemical instabilities limit their lifespan when recharging, making them impractical for use in cars, says physicist Winfried Wilcke at IBM's Almaden laboratories, based in San Jose, California.

So Wilcke studied the underlying electrochemistry of these cells using a form of mass spectrometry. What he found was that oxygen is reacting not just with the carbon electrode, as it was known to, but also with the electrolytic solvent - the conducting solution that carries the lithium ions between the electrodes.

However, if the electrolyte reacts with the oxygen when the car is in use it will eventually be depleted. So, working with his colleague Alessandro Curioni at IBM's Zurich research labs in Switzerland, Wilcke used a Blue Gene supercomputer to run extremely detailed models of the reactions to look for alternative electrolytes. This included a form of atomistic modelling right down to the quantum mechanics of the components, says Curioni.

"We now have one which looks very promising," says Wilcke. He won't reveal what material it is but says that several research prototypes have already been demonstrated. And as part of Battery 500, an IBM-led coalition involving four US national laboratories and commercial partners, the hope is to have high quality HSTNN-IB75 a full-scale prototype ready by 2013, with commercial batteries to follow by around 2020.

If it works, this would solve a major obstacle with lithium-air batteries, says Phil Bartlett, head of electrochemistry at the University of Southampton, UK. There are other practical issues to address, such as enabling such batteries to cope with moist air. "Lithium in water spontaneously catches fire," he points out.

Most lithium-ion polymer batteries use a fast charge to charge your device to 80% battery capacity

October 24 [Wed], 2012, 10:55
Standard Technology
Lithium-ion polymer batteries have a high power density that gives you a long battery life in a light package. And you can recharge a lithium-ion polymer hp envy 572032-001whenever convenient, without requiring a full charge or discharge cycle.

Standard Charging
Most lithium-ion polymer batteries use a fast charge to charge your device to 80% battery capacity, then switch to trickle charging. That’s about two hours of charge time to power an iPod to 80% capacity, then another two hours to fully charge it, if you are not using the iPod while charging. You can charge all lithium-ion batteries a large but finite number of times, as defined by charge cycle.

A charge cycle means using all of the battery’s power, but that doesn’t necessarily mean a single charge. For instance, you could listen to your iPod for a few hours one day, using half its power, and then recharge it fully. If you did the same thing the next day, it would count as one charge cycle, not two, so 12 cells Mini 1000 batteryyou may take several days to complete a cycle.

Each time you complete a charge cycle, it diminishes battery capacity slightly, but you can put notebook, iPod, and iPhone batteries through many charge cycles before they will only hold 80% of original battery capacity.

These programs might be more sensitive to battery problems

August 23 [Thu], 2012, 12:46
Does it seem like no matter what you do, your computer is always out of battery power? It might be time to replace the battery. Every battery has a designed capacity—basically the amount of charge that it's designed to hold. Over time replacement Pavilion g62 battery lose their ability to hold a charge. This means that even though you're fully charging your battery, the actual amount of power that the battery can hold is going down.

Some of the telltale signs that your battery is going bad are shorter use times, and subsequently, shorter times to recharge. If you notice the amount of time you can spend unplugged is going down, then chances are your battery has lost much of its ability to hold a charge. Another sign that your battery might be on the wane is that it takes less time to recharge. A battery that's going bad might also cause your computer to turn off or hibernate unexpectedly, even if the battery meter displays ample capacity remaining (70 or 80 percent).

Fortunately, Windows can help you know when your battery is unable to hold a full charge. When your battery gets down to 40 percent of its original capacity (that is, it can only hold 40 percent or less of its designed capacity after it has been charged), you'll see a notification via the battery meter icon that your replacement Pavilion dv7 battery might be going bad. This notification is new in Windows 7—earlier versions of Windows can't notify you when your battery is going bad. If you don't want to receive this notification, you can turn it off by clearing the check box on the battery meter.

Many batteries will show signs of problems well before reaching 40 percent of their original capacity. Also, many computer manufacturers have programs that you can use to measure the performance of your battery. These programs might be more sensitive to battery problems and should be used first to check the condition of your computer's battery. For more information about solutions to this problem

This transaction is re-enacted

June 12 [Tue], 2012, 17:35
A renewed emphasis on Yahoo! 's core business mission. Levinsohn will be put forward this line that Yahoo is a major digital media companies, the ultimate answer to this task of mission. He needs to be emphasized that this issue and clearly illustrate the problem to the advertisers, employees and investors.




(2) focus. Scott Thompson scott thompson said, Yahoo can not enter in all areas. Yahoo how to spend the resources obviously have to make tough choices. These resources can not be dispersed cheap Latitude E6500 batteryto one mile wide and only 1 inch thick. This means that Yahoo's smart to do really good things, and make your own with Google and facebook differences of.




Re-contact the advertisers. Yahoo in the past year, the best thing to do is indisputable that the original content of the cooperation with ABC News and Katie creek (katie couric) chaired by talk show. Levinsohn must answer the MacDermid Jackson Avenue (U.S. advertising industry centers) and Yahoo is the best partner to advertisers. This means that the launch customers bundled with interesting original video charges, immersive advertising and promotional activities.




4 unique premium content. ABC worked. Yahoo needs to do more similar transactions. However, Yahoo have to be smart. These types of transactions is very expensive. Yahoo does not have unlimited capital. Premium content is a differentiating factor for Yahoo, even though youtube is also trying to build their own.




(5) in user-generated content. Yahoo from it in the Asian equity or from the patent agreement reached with facebook to get some return on capital, a lot of return on capital will be used to repurchase stock and possibly distribution of dividends to shareholders. Some return on capital should be used to enhance the core business, allowing Yahoo's acquisition of some interesting companies. User-generated content is ideal for Yahoo. This content suitable for mobile with Google and facebook. yelp, zillow, homeaway, and the tripadvisor are appropriate, even though these companies are increasingly expensive.




6 re-enact the deal with Microsoft. Has been a two-year search deal is for both sides did not really play a role. This transaction is re-enacted. On the positive side, the search of the last quarter is actually better than expected, "resulted in a higher click-through rate on Yahoo a better user experience.




External steps taken by the




(1) to strengthen the relationship with Alibaba. For Yahoo, there is no relationship more important than this relationship. Yahoo has a 40% stake in Alibaba. Alibaba may become a market capitalization of $ 100 000 000 000, China's largest Internet companies. Alibaba also have the opportunity to exceed this level. Yahoo is now no reason to sell it holds the entire equity interest in Alibaba. However, now part of the equity sold to Alibaba is logical to help its management before the implementation of the ipo feel more stimulation. The ipo meet the interests of Yahoo and facebook.




(2) to find a win-win situation with facebook. Yahoo should not be with the Thompson's leave to the end and facebook. However, Yahoo is now clearly an opportunity to facebook CEO Mark Zuckerberg (mark zuckerberg) and coo Sherry Sandberg (sheryl sandberg) back to the negotiating table to find a beneficial to both sides of the solution. Facebook the IPO road show video at the same time from the Yahoo board of directors Michael Wolf (by michael wolf) and is also a Yahoo board members Zuckerberg consultant John Hayes john hayes, Wolf can help make this happen.




Sale of the shares of Yahoo Japan. Yahoo Yahoo Japan's equity value is $ 6.4 billion. Softbank seems to think that it should not pay this amount, because Yahoo is the only buyer. Both sides need some sort of agreement. Now is the time to recovery 9cells Studio 1537 batteryof these funds. So that Yahoo can take advantage of the funds.




(4) borrowing and use of excess cash to implement large-scale share buybacks and special dividend may be small-scale. Dan Loeb and Harry Wilson, harry Wilson's "financial engineering" in this regard can be particularly helpful. Yahoo has 12 million shares issued and outstanding shares. Asset sales of approximately $ 8,000,000,000 to Yahoo reduced by one third the number of shares outstanding to 800 million shares. This means that profits, earnings per share increase of 1 cent increase in the value of 33%.




Actions which are achievable. This is not rocket science, as no easy matter. According to foreign media reports, along with Dan Loeb (dan loeb) joined the board of directors, Yahoo temporary ceo Ross Levinsohn (ross levinsohn) seems ready to begin the implementation of many steps to open the value. Yahoo needs to take 10 steps to success.

Industrial pattern in the adjustment and constantly improve and rationalize

June 12 [Tue], 2012, 17:22
The main products of the led display industry is not only absolute market in mainland China, also occupy a certain share in the global market, the formation of a stable export. With significant improvements in product quality and reliability of the whole, the continent led display application companies in the construction of major projects and key projects performance to compete in the international market, large-scale display systems engineering to undertake the implementation of the ability to significantly increase.

b, industry technological progress, technological innovation has played a leading role in promoting the development of the industry

led display application industry overall technical level of the basic sync with the international development nearly two years of innovative products have been developed active within the industry, technological innovation, product and technology development capabilities continue to strengthen. Meet specific11.1v 5200mah 9cells 590543-001 application requirements of technology development, technical support and technology to ensure the empowerment of key technologies and mainstream product development is more mature.

c, led the development of the upstream industry on the display application development of the industry to promote the obvious

positive interaction led the industry chain downstream, new products, new technologies, promote the use of rapidly led chip materials, Driver ic, control technology, many companies in the industry led integrated application of semiconductor lighting, lighting, lighting engineering and other aspects of the technical basis and production engineering basis. Led large screen in the traditional display technologies and products based on LED display products in the industry market share increased year by year.

d, industrial development was standardized, intensive characteristics

led display industry association has been actively promoting the products and technological exchanges and carry out the standardization work, product technical standards, product testing and other means to effectively promote the development of industry standardization. Normalization and standardization led to enhance the level of industrialization, the accumulation effect of industrial layout reflected the focus on larger-scale enterprises such as Shenzhen. In recent years, China led display application industry in the development of an important feature of the scale of the number of firms increased significantly, the number of medium-sized enterprises has been decreasing the number of small-scale enterprises have also increased. Industry in general by "olive" to "dumbbell-shaped" change.

the effect of e, major events, driven by industrial development to mention

2008, 2009, industrial growth, the pull factors of the major events of the Beijing Olympic Games, the 60th anniversary celebrations, the Shanghai World Expo can not be ignored. In this regard, on the one hand, have a rational understanding, on the other hand to take this opportunity to seriously sum up experience, and actively promote technological innovation, develop new markets in order to maintain the continued development of the industry.

f, industrial pattern in the adjustment and constantly improve and rationalize the

Specialization within the industry has become increasingly evident, the prototype of the LED display industry chain has basically taken shape, and laid a good foundation for the escalation of the industry. Competition, specialization of production, technology development, engineering services, and otherbattery for BQ350AA aspects of the division of labor in the industry reflected in the market segments and prominent core competitiveness, and become the new focus of many companies.
Led line with the unprecedented prosperity of the technology led, led display products of concern, widely used in commercial advertising, live broadcast, traffic guidance, stage interpretation of other fields, now, the LED display showing some of its characteristics.

The company's marketing staff to inform

June 12 [Tue], 2012, 17:16
Today, the Internet of Things in the country, people are inspired; However, the industry to the market is widely accepted and the formation of a virtuous cycle of market-driven and still need to address several key issues:

First. The user experience. Many of the current Internet of Things project outstanding understanding of user needs, they tend to complete some connection function, but did not consider the driving replacement 535753-001force for the user to use these services. Thus, many of the system construction have good intention and vision, but did not get the expected user participation.

Second. Costs. The high cost of terminal equipment for the popularity of the Internet of Things products hinder rather high, in large part because the terminal equipment and the Internet connection cost is too high. As long as the device requires a wireless connection network, users will need to be equipped with a dedicated gateway or use 3g/gprssim card, these two methods will result in a high cost burden for the terminal cost.

Third. Energy consumption. The battery life is another decisive factor in product popularity of Internet of Things. Such as home security surveillance camera, if the user takes three days to replace the battery, the use of passion must be to reduce the continuous frequent replacement of several; user participation to reduce the product market will be reduced. Therefore, low-power technology in the development of things will play an important role.

Fourth. Sensing technology. The existence of state of the physical world need sensors to map to the Internet, the perception of the more abundant, more multi-dimensional online mapping out the physical world. The past ten years, sensor technology has been greatly developed, tracking the location of goods in the logistics industry from the first sensor, can ascertain the people's idea of ??the state of brain wave sensors, sensor technology development like nerve endings will fundamentally on the ability of perception to promote the Internet of Things.

Fifth. Data processing capabilities. With a large number of sensor information to be included in the ubiquitous network, the development of things would trigger a massive data growth, in fact, the amount of data on the Internet is to grow at a rate of 50 percent a year, we have entered the era of "big data". Thus, with the massive data processing capacity, and to analyze and extract valuable information for service providers, will be the decisive factor.

See the inevitable trend of development of the Internet of things, and perhaps still need three years, five or ten years, but from now on, it is by no means merely a concept. Whether you engage in any other industry, you may have already experienced the era of the handwritten copy to a computer archive, information technology will eventually help you greatly improve production efficiency. 2009, Premier Wen Jiabao visited Wuxi and pointed out that the Internet of things the development of the strategic significance of the term "Internet of Things" in the country rapidly to fame, and at the times the beginning of the year included in the government work report; Wuxi also because of its "Experience China" "China Internet of Things center" label by the nationwide attention. Then, the 12th Five-Year Plan included in one of the seven strategic emerging industries within the next five years, the government will invest 5 billion yuan to support related industries. Many local governments have also invested a lot of money building "smart city" to drive the market. Various aspects of the industry chain, this strong support in the government in droves, and therefore, when you mention the name of the "Internet of Things", people's first reaction often is: government projects, concept.

Internet of Things is really just a concept? "Internet of Things" The name comes from the "sensor network", in the past few decades through radio frequency, such as two-dimensional code technology has been widely used in military and logistics areas, however, the Internet of Things to further broaden the sensor network category, which refers to the line of the physical world with a variety of sensors via the Internet to connect, thus forming a 11.1v 5200mah 9cells 448007-001ubiquitous network. With the formation of the popularity of social networking in recent years, the Internet of Things will allow persons and things, things and things, between people, convenient and seamless connections.

From the cookie on the site to the home security camera, anything can be called the "sensor": it is the real behavior and state of the data mapping. It is estimated that in 2020, there will be 50 billion devices connected to the Internet, more than half comes from sensors scattered around the world, perception of each dimension of the location, move, vibration, temperature, humidity, air quality physical state of existence. "

The nature of the Internet of Things, its development needs to penetrate the industry application received a boost. In the country, the networking industry has not just rush to the production of rfid chip, which has begun to be applied to various fields. High-tech enterprises in agriculture, Jing Peng, a focus on agricultural equipment research and development of Things system in the greenhouse planting and indoor farm project to help users automatically adjust the temperature, humidity, carbon dioxide concentration, light intensity, plant growth to create the most appropriate environment. The company's marketing staff to inform, their goal is this model to the national level, to solve the problem of food safety in recent years and the process of urbanization of land reduced.

In the field of energy, physical interconnection system is widely used in energy-saving. The successful bidder photoelectric is an led lighting products manufacturers, they will be the Internet of Things technology applied to energy efficiency management platform, according to the actual situation will be unnecessary to open the lights turned off. According to the company's engineering staff, led lighting systems can help customers to annual savings of 70% of the electricity and energy efficiency management platform can save another 10%, therefore, the lighting system each year to help customers save 80% power consumption.

Health care is another major areas of the Internet of Things applications. In recent years, community health advocate of Things to be further developed in this field of application. People can stay at their own blood pressure, heart rate, body temperature and other health information transfer to community health centers, 24 hours to allow doctors to understand the status of the patients. Some companies have to develop in this area, the benefits for Physical Recreation, a health care terminal equipment provider, introduced their product has been sold to all provinces, but the vast majority of projects are still associated with government procurement.

The relative price of roadside stalls

June 12 [Tue], 2012, 17:10
For the various functions of mobile phone film industry is also no specification at all, is basically a business "mouthpiece". Business is to seize the psychology of the customer to buy high-end mobile phones generally do not care to spend hundreds of dollars to buy a so-called high-end mobile phone film. As for the so-called radiation, waterproof, and never scratch, businesses play a gimmick. In fact, the gap between the purchase price of all kinds of mobile phone film is not great, but the mobile phone film manufacturers according to different models of mobile phones produced by different types of products.



The price of mobile phone film, in fact, by businesses have the final say on the market, HD, matte, mirror, radiation and other mobile phone film. Due to lack of the necessary regulatory and industry standards, mobile phone film market seems to be rather 11.1v 5200mah 9cells HSTNN-C17C confusing. For example, posted a "high-definition film" generally charges about $ 30, which is printed on the original film of the golden logo of Apple, worth close to 300 yuan.

According to statistics, by the end of May, the Chinese mobile phone users will be more than one billion, is one of the use of mobile phones in the world's most populous country. Accompanied by the expansion of the mobile phone market, mobile phone accessories and related products also will be gradually updated, the increasingly rich, but the corresponding service specification has affected the development of the industry.

Consumer experts called on the parties concerned as soon as possible to industry access standards, price standards, film production there are rules. Meanwhile, under the uniform quality standards, and guide the orderly market competition to develop the industry leader. On the consumer side, should first look at their phones if you really need the film, rather than blindly follow the trend. If you really need, should improve their awareness, to avoid quality problems arise or service disputes, rights nowhere.

A few years ago, landing in the domestic market of mobile beauty services, has now become a fashion choices of young people. But when the reporter visited recently found that cell phone beauty market is not standardized, quality of service is also uneven, is still in the era of huge profits.

The high-speed adoption of smart phones with the fire of the mobile phone film industry. There is a demand market niche. Today, in the downtown business district, or unusual lanes, "mobile film" signs are everywhere.

Endless stream of customers in the store to provide a mobile beauty business phone beauty shop, mobile phone arsenal. Some phones store side of the sales of mobile phone side of the body's beauty, purchase beauty one-stop service, business is very popular.

The look of the phone too homogenization, I am buying a new phone, went to be a beauty directly to their phones to make personalization some. Consumers are saying.

Mobile phone subsidiary of Zhongguancun Hailong Building, phone beauty shop: the first mobile phone lanyard, transparent set, flash, flash antenna, screen savers, stickers and other decorations, are now pediatrics, cell phone stickers drill shedding coating to become among the most The popular mobile phone diy decoration. Their phones into a work of art to attract a growing number of mobile phone users.

In the beauty shop, consumers can buy their own special stickers affixed to match exactly on the phone, but did not unobtrusive. Nail affixed to drill to attract the attention of a large number of young female beauty, and now the phone stickers drill almost become synonymous with the best mobile beauty.

This mobile phone is affordable, and can not afford to. "With the popularity of large-screen smart phone, fire up the mobile phone film, maintenance, brush machines and other peripheral industries. The mobile phones around the industry, small business seem like much, but many firms have gained from the staggering profits. High profits, many businesses have taken a fancy piece of "cake".

In the stall, the seller is more than casually asking price, but customers are free to bargain, the price gap is quite large.

The relative price of roadside stalls, regular stores and the communication mall film price is "outrageous". In a number of mobile phone chain stores, each out of the iPhone 4 dedicated film "packaging and price are not the same, a dozen types of price from 50-300 per month.

A film really worth so much money? Online search to find the cheapest online store apple 4s membrane is 0.7 yuan. The wholesale price of high-definition film "is only one yuan, business advocacy marvelous original film, in fact, Colorful film is the purchase price is not more than 30 yuan, more thancheap HSTNN-C51C hundreds of large quantities of purchase, the price can even dropped to around 15 yuan.

Film quality of the mobile phone market is mostly the same, but the electrostatic adsorption of the film than the adhesive expensive. Some traders see the customer took the more expensive the phone to film, they instigated the customer posted the high-end mobile phone film, the relatively high asking price will naturally. Generally three or four thousand phone people do not care to spend three hundred dollars affixed to a membrane.
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