Archive for July 31st, 2009

Battery Chemistry Information

Friday, July 31st, 2009

Sounds simple, right? Pick a chemical makeup and run with it. Not so fast. “There are as many, if not more, recipes for these notebook batteries as there are companies that supply them,” says Denise Gray, director of hybrid energy storage systems for General Motors. “Automakers need to experiment to find which works best for them. That takes time. We need them to perform as a function of driving style, location and climate. They need to deliver both power and range when needed, every time it’s needed.”

Like other hp laptop battery,hp 338794-001 battery those that use lithium work by shuttling ions (electrically charged atoms or groups of atoms) between their electrodes. When they’re charging, the ions travel in one direction. When they’re discharging, they go in the other. The most widely used have a positive electrode made from cobalt or manganese oxide and a negative electrode made from graphite. The electrolyte (the material through which the ions pass from one electrode to the other) is a lithium-based gel or polymer. These types of batteries are mainly used in laptops, and are not well-suited for the automotive environment, where they’re subject to rapid discharging and recharging, much higher power demands and extremes of heat and cold. The problem is that the chemistry isn’t stable enough, so batteries suffer from overheating—and that can have an explosive effect.

The most promising electrode chemical makeups, then, involve nano-engineered materials like phosphates of iron, lithium-titanate spinel and, most recently, bundles of silicon nanowires. Making an electrode out of these tiny particles increases the available surface area for the ions to bond to and exchange electrons, avoiding a bottleneck that used to result in deformation (and diminished effectiveness) of traditional materials like graphite. The smoother-flowing electrode decreases the battery’s internal resistance and improves its ability to store and deliver energy.

Some battery companies have hp 361742-001 battery,hp 371785-001 battery recipes that are ready for series production now, at least for mild hybrids. Milwaukee-based Johnson Controls/Saft, one of the industry’s top manufacturers for outsourcing hybrid chemistry into Saturn’s Vue series and Mercedes’ diesel hybrid (details on next page), has been touting research it calls NCA, which has been approved for mild and full conversions by OEM powerhouses. “It has demonstrated the required combination of power, range, safety and longevity,” says Mike Andrew, director of Government Affairs and External Communications at Johnson.

Meanwhile, Toyota appears to be close, if not locked into its chemistry, for a demo fleet of plug-in hybrids. In Detroit earlier this month, Toyota’s president Katsuaki Watanabe said they would be accelerating development to have a large-scale (an estimated several-hundred-to-a-thousand-vehicle) test fleet in service by 2010 or earlier. When pressed, he said these demo cars could be on the road by late 2009. So, in order to meet that target, we hear Toyota has the chemistry nearly finalized for their first-generation of electric cars.

Even so, there doesn’t seem to be a clear winner here or a one-size-fits-all solution. “The chemical makeup will, in part, depend on application,” says Dave Vieau, CEO of battery supplier A123 Systems. “One type of lithium-ion hp 372772-001 battery,hp 398876-001 battery might be better for use in hybrids, while another is better for plug-ins.” As PM detailed last year in a cover story on plug-in research, A123 is one of the leaders in this field, with phosphate particles in its electrodes that shrink to about a hundredth of the size of the oxide particles used in existing li-ion batteries. That was good enough to score the MIT geeks at A123 a massive contract with GM to work on its Chevrolet Volt, the power system for which they’re currently developing.

And it’s going to take a lot more practical application to figure what works over the long run. “It’ll take companies like AC Propulsion and Tesla to put some products on the market to see what works and what doesn’t,” says Tom Gage, president and CEO of AC Propulsion, makers of a Scion-based hp 417066-001 battery,hp 346970-001 battery vehicle conversion they call the eBox. “Right now, the market is too small for the top tiers to produce anything.”

Laptop Battery Life Benchmarks Are out of Juice

Friday, July 31st, 2009

In an industry that gets off on throwing obscure benchmarks at buyers ( “pixel fill rate,” anyone?), laptop battery life is one of the easiest to understand.

It’s also long been one of the least useful, critics charge, due to the industry’s deceptive use of the dominant standard, the MobileMark benchmark created by the Business Applications Performance Corp. (BAPCo), an industry consortium whose members include Intel Corp., Dell Inc., Hewlett-Packard Co., Advanced Micro Devices Inc. and others.

“Everyone in the industry knows this benchmark is wildly optimistic and that the actual battery life you’ll get is often less than half what MobileMark suggests,” wrote analyst Rob Enderle last month. “This is because MobileMark measures battery life much like you might measure gas mileage if you started the car, put it in neutral, and coasted down a long hill.”

The latest MobileMark 2007 report measures laptop battery life under three scenarios: reading a document, watching a DVD movie, and doing a “representative” mix of productivity tasks, such as reading and composing documents, editing photos and encoding Flash videos (see page 13 of white paper).

But rather than using an average time based on all three measures, BAPCo designates its third scenario as the way most people use their laptop.

There are several problems with this, according to critics. First, doubters such as AMD say that the productivity test assumes that the notebook is idle 90% or more of the time.

Second, MobileMark’s “productivity” scenario assumes that users, when active, are using only software such as Adobe Photoshop or Microsoft Office. They don’t test usage of music or video applications such as iTunes or Windows Media Player, games or Web browsing. The test also assumes that Wi-Fi is turned off.

That seems particularly unjustified today, since netbooks are touted as on-the-go, Web-centric devices, or high-definition video-capable machines.

Finally, MobileMark 2007 allows PC vendors to set their laptop screen brightness at the lowest possible setting, provided it is no lower than 60 nits (a nit is a measure of brightness. The problem, again pointed out by AMD, is that 60 nits is quite dim, being only about one-fifth of most notebook PCs’ maximum screen brightness.

According to an informal reader poll at Neowin.net, a Windows community site, fewer than 15% of respondents run their notebooks that dim.

BAPCo defended its MobileMark benchmarks. “The content of BAPCo benchmarks are vigorously debated and cooperatively developed by BAPCo members according to a long and rigorous process,” the company said in an e-mailed statement. “As is the case with all BAPCo benchmarks, MobileMark 2007 was approved by BAPCo according to a democratic voting process similar to ones used by most industry work groups.”

Despite the criticism, many vendors are willing to tout the battery life from the Productivity test as their overall MobileMark score. See these offers from Hewlett-Packard Co., Lenovo Group Ltd., and Dell Inc.

Only Acer Inc. (download PDF here) identified its MobileMark time as a productivity score. Asus Inc., Apple Inc. and Toshiba Corp. didn’t mention MobileMark on their Web sites.

In late June, a class-action lawsuit was filed in U.S. District Court in San Jose, targeting Intel Corp. for, according to the San Jose Mercury News, “essentially rigging those tests to inflate the battery life of laptops powered by its chips.”

Intel denied the claims, and noted that the same law firm, Girard Gibbs of San Francisco, unsuccessfully filed a separate class-action lawsuit against Intel several years earlier, according to the Mercury News.

Intel also disputes the claim that the public is being misled. “Anyone who criticizes consumers’ intelligence when shopping for laptops is underestimating the consumers,” an Intel spokesman told the Mercury News.

Carol Hess-Nickels, director of marketing for business notebooks at HP, took the same line. “I’d say we are pretty pleased with the benchmarks used today,” she said in an interview last month several days before the lawsuit was filed. “I’ve not personally gotten complaints.”

HP claims business netbooks such as the Mini 2140 and the Mini 5101 can run up to eight hours, or a full business day, on an optional, extended battery.

Lenovo, which has claimed as long as 7.5 hours of battery life for its laptops on extended batteries, acknowledges there is a problem, however.

“We don’t really like the fact that something is supposed to get four hours and users routinely say, ‘We divide that number by two and that’s what we get,’” said Lenovo segment marketing manager David Critchley in an interview, also several days before the lawsuit’s filing.

Dell appears to agree with Lenovo. “Customers expect the advertised battery life to reflect the way they really use the product,” Ketan Pandya, head of AMD-based products at Dell, told Newsweek last month.

As a counterbalance, some magazine reviewers go overboard to turn off all of a laptop’s power-saving features, Critchley said, which is equally inaccurate. “We put a lot of time and effort into our power manager,” he said. “You’ll see some significant gains from the way we handle sub-components.”

AMD, which complained that MobileMark essentially discriminates against its chipsets because they are more graphically powerful than Intel’s, is all for reforming MobileMark.

In a blog entitled “There has to be a better way,” AMD suggests turning the widely used performance benchmark, 3DMark06, into “an active battery life test” that it argues would be a more accurate measure of average battery life.

Lenovo, although game, is more cautious. “If Dell, HP and Apple all said, ‘Yea, verily,’ Lenovo would be right there with them,” Critchley said.

Tesla lithium battery company to join the Expert Group on the development of KLD Energy Te

Friday, July 31st, 2009

Headquartered in Austin, the Neue ™ drive simple ™ patented technology laptop battery of high-performance motor system developers KLD Energy TechnologiES Limited appointed as the chief technology officer Rob Ferber. Before Rob Ferber as Tesla Motors (TeSL a Motors Inc.) Scientific director. With the Ferber joined, KLD Energy Technologies will be opening an office in San Jose, California.
KLD Energy Technologies HP laptop battery  co-founder, CEO ChrIS [Summary picture forum] tian Okonsky said, “Rob is our management team as an important complement to the power. He is a true electric vehicle industry innovation. The company is at a critical turning point, there is no doubt that his expertise and experience will further enhance our strength.
The past 20 years, Ferber to the identity of scientists for the AC PropuLSion Tesla Motors Corporation and the development of battery systems. In the work of Tesla Motors, Ferber lithium battery company in charge of the initial stage of the development group compaq EVO N400c battery,compaq EVO N410c battery.
Ferber said, “KLD’s Neue ™ motor system is a typical example of disruptive technology, electric vehicles will change the design and performance. Be able to join such a dynamic company, I am very pleased.”
With the Ferber joined, KLD Energy Technologies will open a new office in San Jose. The company is currently in Austin, Texas, Gilroy, California R & D activities carried out compaq EVO N400 battery,compaq EVO N410 battery,compaq Evo N600C battery.
KLD Energy Technologies Ltd. announced in June the new Deluxe pedal electric motorcycle, its high-performance gear without Neue ™ motor system to the U.S. market. Motorcycle E165 pedal up to 65 miles per hour, using a standard lithium battery, can travel over 100 miles away. Neue ™ innovative motor using nano-crystalline composite materials conduction energy efficient than the traditional iron core motors, with a high frequency of low-speed ratio. Neue ™ systems rely on two rounds and three rounds of vehicle fuel vehicles can be achieved with considerable speed and performance levels. This pedal motorcycle 3,288.00 dollars for the reserve price.
Earlier this year, KLD Energy Technologies Inc. announced the pedal with the Vietnamese motorcycle manufacturers Sufat reached a deal for a series of new pedal of the motor to produce high-performance motorcycles.
About KLD Energy Technologies, Inc.
KLD Energy Technologies is headquartered in Austin, the company designed and authorized by high-performance motor system patented technology. The company’s core technology is a high-frequency, low-speed, non-transmission of electrical systems, electric vehicles can improve the speed and efficiency.
KLD Energy Technologies mission is to transport high-performance electrical systems to reduce pollution. The company’s technology represents the changes in the pattern of the electrical design to support efficient, environmentally friendly production of two and three-wheeled vehicles compaq Evo N610C battery,compaq Evo N620C battery,compaq Presario 1200 battery,compaq Presario 2100 battery.

Cold lithium batteries power the development of new energy automobiles and then identified the direction of

Friday, July 31st, 2009
From the beginning of July 1, the “new energy automobile production enterprises and the rules governing market access for their products,” the official start. A new rule has caused an uproar in the market: Prior to the voice of the highest automotive lithium batteries are included in the development of a view, not in the list of large-scale promotion. In other words, was also optimistic about the market, Buffett repeng of lithium batteries Latitude X300 battery, XPS M140 battery, XPS M1210 battery  for electric cars lose a nickel-hydrogen batteries in hybrid hands!
Has just enacted a new access system to the December 31, 2010 apply, with the National Development and Reform Commission published in 2007 compared to the standard, the letter of the standards set by the Department of new energy vehicles for the three technical phases of the fine products of.
The new access system for different types of new energy development and operation of motor vehicles to give a more clearly defined. “The access to the standard mark of China’s new energy into the acceleration period of the automobile industry.” Industry experts said.
What surprised the industry is a new regulation, “the use of lead-acid laptop battery  hybrid passenger cars, electric cars and electric commercial vehicles, and the use of nickel metal hydride hybrid-powered passenger cars were classified as mature view products.
A sudden, the market in an uproar: the voice of the highest previous car was the inclusion of lithium-ion battery development period, the list is not a large scale. In other words, was also optimistic about the market, Buffett repeng of lithium batteries for electric cars lose a nickel-hydrogen batteries DELL laptop battery ,  KD476 battery, TD347 battery in hybrid hands!
Department of Public Works letter why such a launch of new energy vehicle development road map? This road map will eventually lead to new energy sources can not be a readjustment of the industrial structure of China’s best “catalyst”? Can help China to catch the express train of the new energy of the realization of non-transcendence?
Who will lead the new energy automobiles
Nickel-metal hydride batteries and lithium battery, China’s new energy vehicles will be led by whom?
For consultants in the new energy automotive industry researcher Sheng Mao pointed out that the current driving force of new energy automobiles automotive lithium batteries Inspiron 9300 battery, Inspiron 9400 battery  have been the most promising development prospects, but the Department of Public Works this letter is not conducive to the development of a standard lithium cell vehicles across the country to promote universal access to further that this may be China’s new energy constraints of the overall development of the automobile industry.
Department of Public Works letter was optimistic about the nickel-metal hydride battery itself has a certain degree of short-board. China Electrotechnical Society dedicated electric vehicles, director of technical service center Commission Wang Tianshun also said that while China was rich in hydrogen storage materials, but the extraction technology is not high, poor battery consistency, technical problems, there has been no breakthrough, but the cost of nickel-hydrogen batteries Business Notebook NC6115 battery, Business Notebook nc6120 battery, Business Notebook nc6140 battery have been home high.
Energy in the last week of the new car after the introduction of access rules, China’s new energy industry of the largest lithium batteries, “Players” BYD reporters in the face of our interview, saying that “no comment.” But then, this reporter was informed that the exclusive, BYD is committed to the commercialization of electric vehicles has been quietly acceleration process. According to company executives informed sources, the price is expected to 30 million of the BYD E6 Electric Vehicle directory is to declare the country is expected to be listed at the end of this year, at the same time, another F3DM a dual-mode electric vehicle will also determine the 9 on sales to private consumers. “We will be in 13 major cities nationwide in sales, the DM model HP laptop battery , we entered the last year the Department of Public Works letter directory automobile production. At present, the main vehicle to invest in Mainland China, 800,000 have completed the building of capacity.”
Access around the new rules, the industry has formed two distinct voices of the debate:
The first one, represented by Lee Sheng-mao. He pointed out that under the new standards already listed BYD dual-mode electric vehicles, lithium batteries Pavilion dv6000 battery ,  Pavilion dv2000 battery, Pavilion dv4 battery are the automotive, although mass production, but only in approved areas, the scope of product sales, which significantly restricted their products comprehensive promotion. The Chang’an Jie Xun, Chery A5, FAW Benteng, General Grand Hyatt brand, and most other HEV cars are used in nickel-metal hydride batteries used in sales nationwide. Obviously, this kind of national decision-making to the state-owned car business, the Group of tilt.
The second expert opinion is that the new rules show that the country access to a more pragmatic attitude towards the decision-making.
In conjunction with the National Under-Secretary-General by Choi Dong-trees that “look at the new access rules on a more pragmatic national policies, in no hurry to act. Before we are all very optimistic about the lithium electricity, but a matter of fact, after a technological breakthrough development. Lithium definitely the need for a breakthrough in the country currently are not ripe for the promotion. and Ni-MH Compaq laptop battery  time is ripe for the promotion, the cost of nickel-hydrogen, hybrid performance to meet the basic needs of dynamic product mix significantly more mature. ”
It is reported that the release of the new standard for the new energy vehicle technology stage, is divided into the initial period, development period, the mature stage of the three different technologies. Means the product is still at an initial stage of fuel cell vehicles, hydrogen cars and dimethyl ether engine car. Period of product development including power lithium-ion batteries Presario R3000 battery , Presario V4000 battery for hybrid-powered passenger cars, commercial vehicles, as well as pure electric vehicles. Mature technology, the principle is the realization of the path clear, product technology and production technology is mature, industry-standard countries and the basic sound, you can enter the stage of the industrialization of products. The production of lead-acid battery hybrid passenger cars, electric cars and electric commercial vehicles.
Obviously, the products are mature faster, “the road.”
In this regard, Li Sheng-mao that “lithium-ion powered car, only in approved areas, the scope, duration and conditions of sale, the use of.” The new regulations will greatly affect the development of lithium batteries car speed, and to some extent, the impact of car prices on lithium battery research and development initiative of motor vehicles, lithium-ion battery is not conducive to the development of the automobile industry.
More promotion of Ni-MH battery
After an investigation, the reporter found, become the new darling of the nickel-metal hydride batteries, has a unique advantage.
It is reported that, at present, there is only one place in Guangdong, more than 100 Ni-MH batteries do the private sector. New energy-sensitive battery-making enterprises have already begun the distribution of nickel-hydrogen batteries as plans for the future.
Li Yuan and the Hong Kong Branch super in July last year on the signing of a joint venture agreement, co-funded the establishment of 50 million yuan in Hunan Branch Pa Power Battery Co., Ltd., in June this year, much to our Section 120 million yuan in cash to acquire electronic limited Changsha and Seoul liability company 100% ownership. Plans to invest in new sets of 48,000 nickel-hydrogen battery vehicle energy package, and a relatively substantial production capacity expansion, after the completion of Phase II expansion project will have an annual output of 60,000 sets of the vehicle’s nickel-hydrogen  Evo N600C battery capacity .
Compared with lithium, nickel-metal hydride battery is characterized by high security, it is not easy explosion.
Guotai Junan Securities Research on alternative energy expert Wang Zhen of the judge, with the introduction of the new access system, nickel-metal hydride battery is expected to accelerate industrial development, and related businesses due to limited production capacity, production still needs further observation, but such a listed company pre-or have a larger, very high valuation on the Ni-MH battery will be cautious about the stock.
“In the lithium iron phosphate Sony laptop battery technology is not yet mature, the Department of Public Works issued a letter of the new energy standards for motor vehicle access to the new Ni-MH battery also ushered in a major automotive development opportunities.” Vote in the new energy automotive industry consultant researcher Sheng-mao told reporters this. A few days ago, released a consultancy in the cast of “2009-2012 China Li-ion battery industry and prospects for investment analysis report,” the study shows that the current hybrid battery market share of 99% for nickel-hydrogen batteries VGP-BPS9/B battery , VGP-BPS9A battery , commercial representative of Toyota The Prius.
However, the objective point of view, Ni-MH battery, there are some “elbow Mount” in: refining technology is not mature enough, the cost is too high.
China Electrotechnical Society, according to electric vehicles designed, director of technical service center Commission presented王天顺, our country 10 years ago began to study the development of electric vehicles, but has been constrained by technology. Consistency is the biggest problem. Low-power battery pack can be, but as a hybrid, the major source of energy for electric vehicles is the need to make high-power battery packs do, the greater the power, the greater the difference.
The possibility of common prosperity
Industry experts believe that the new car as an emerging energy field, is becoming the world’s auto industry to catch up with China’s auto industry is a rare technology “leapfrogging” a good opportunity, so the development of comparative advantages of our Toshiba laptop battery  line. In fact, this reporter found in the survey, nickel-metal hydride batteries and lithium batteries have different advantages, in the future is entirely possible to achieve “common prosperity.”
Shun Securities analysts said the driving force for the future of lithium-ion batteries and nickel-hydrogen batteries is expected to achieve common prosperity, Toyota hybrid (HEV) in all of the use of nickel-hydrogen batteries, and lithium-ion power batteries for hybrid-electric plug ( PHEV), the two different application areas. Line in the choice of technology should not only attach importance to the advanced nature of technology, but also consider the success rate of commercialization.
In fact, China’s new energy industry development should be from the Japanese companies learn from the experience and learning.
July 2, Japanese media reported that Hitachi plans to invest 20 billion -300 billion yen (about ¥ 96 1 U.S. dollars) in 2015 for the current lithium-ion PA3178U-1BRS battery hybrid production capacity increased by about 70 times to reach 700,000 vehicles for the level of support. At present, Japan’s leading auto and battery companies have to invest in automotive lithium-ion power battery production line, to concentrate production in 2010-2011. Lithium-ion battery technology as the mainstream of the next line of no doubt.
This would be regarded as Japan’s new automotive research and development of energy has been quietly changing the direction. Nickel-metal hydride batteries in the world’s leading technology, the Japanese pay more attention to the development of lithium batteries PA3191U-1BRS battery , PA3191U-2BRS battery .
Nevertheless, Japan’s Panasonic and Sanyo have said that “lithium batteries also need to continue tackling issues such as security, so it still takes time to commercialize.”
In this regard, investment advisers in the new energy automotive industry researcher Sheng-mao believes that new energy sources for electric vehicles in recent years, the voices growing louder and louder, and lithium cell vehicles have been the most promising development prospects, therefore, all countries, as well as car manufacturers are to the development of lithium batteries as the car focus on the direction of Japan in this regard is as a new energy vehicles to focus on the development of strategic focus.
Sheng-mao said that China’s car prices and promote the battery business in addition to Ni-MH battery industry, the Government should look to more long-term investment of human and material resources to carry out research and development driving force for lithium batteries and fuel cells to maintain the technical follow-up for the occupation of a broader market of new energy to prepare. After all, the new energy vehicles to China with a rare start at the same time the international automobile industry the opportunity to miss this opportunity to once, the consequences would be disastrous.
The threshold of the new rules to improve the industry
In addition to the types of new energy vehicles have been divided, the new rules of access to another major significance is the threshold for the development of the industry, the new energy future based on the rule.
Access under the new rules, new energy, auto companies should be the National Development and Reform Commission announced the vehicle manufacturer and product notice vehicle manufacturers or modified types of commercial vehicle manufacturers; new car should be in accordance with the relevant provisions of the Investment Management to handle project approval or registration procedures.
In this regard, the research department of CITIC Securities analyst Li Chunbo car that new entrants into the business, must abide by the “automobile industry development policy,” the requirements of Development and Reform Commission reported that the approval of access to traditional automobile “birth allow card “, so a total investment of not less than 20 billion yuan. Would like to enter a new energy future, the ranks of the more difficult car.
Guotai Junan Wang Zhen alternative energy researchers believe that the new energy from the previous car’s development, production does not require the industry to now set the threshold, which has a definite progress. Car prices from R & D capability, quality, consistency, the new energy automotive industry has increased the threshold for a matter of fact. “The access rules of the lead-acid battery products PA3285U-3BRS battery , PA3331U-1BRS battery  are included in the mature product, and at present all over the country of production of lead-acid electric vehicles dotted the small business, and part of the local government has received permission to allow the local road. However, the size of the of view, these enterprises do not meet the threshold requirements. ”
Tao, deputy general manager of Chery Automobile said last week that “For a mature new energy automotive industry, product reliability and consistency are the most important, and to ensure that this point, it is necessary to carry out a large number of tests, vehicles plant and components must go through a long-term co-ordination and testing. “Therefore, the Department of Public Works letter of the rules governing the application of new energy automotive products is still at an initial stage or stages of the development of technical, need to submit after-sales service commitment, he said he was authorized .
SAIC and Chang are the person last week said he was in favor of the new energy automotive and product manufacturers access to the threshold “will be the beginning of the high.” Access to the promulgation of new rules, have been robbed of these new car-based energy companies,  PA3384U-1BRS battery , PA3395U-1BRS battery is extremely beneficial. This year, Beijing’s new energy auto base car new energy base in Chongqing have been established, Beijing Jianlong Group Heavy investment in “new car key components of energy” project in April 2009 set up a formal xiqing ,Tianjin of District. Wuhan Dongfeng Electric Vehicle Industrial Park was also unveiled in June. Followed by SAIC and its listed companies Shanghai Automotive (600,104) joint venture of Shanghai Automotive Technology Dresdner Limited (Dresdner Shanghai) also formally inaugurated the operations.
“In fact, the development of electric vehicles in terms of technology, SMEs have also have a lot of leading-edge technology.” China Electrotechnical Society dedicated electric vehicles director of the Center for Technical Services Committee told reporters王天顺, but the new access rules these smaller block on the outside.

NEC and Nissan joint venture of a new generation of high-performance lithium batteries

Friday, July 31st, 2009
Recently, Nissan Motor Co., Ltd. (hereinafter referred to Nissan) and the Nippon Electric Co., Ltd. (hereinafter referred to as NEC), NEC Tokin Co., Ltd. (hereinafter referred to as NEC Togane) joint venture, Automotive Energy Supply Company (Automotive Energy Supply Corporation, hereinafter referred to AESC) announced in Zama, Kanagawa Prefecture plant began trial production a new generation of automotive lithium batteries 6Y270 battery , 75UYF battery , 7T670 battery .
And compared to the current nickel-metal hydride batteries, AESC Li-ion battery developed to provide nearly twice the power capacity. And unique pyramid structure, and also the size of lithium-ion laptop battery  module is more compact and practical. At the same time, NEC Group, the development of the electrode made of manganese metal, with better stability, sheet structure also contribute to cooling performance. The vehicles in the real experiment, not only the safety of products has been verified, but also the realization of more than 100,000 kilometers of travel (*) The long service life.
At present, the AESC has been established for mass production system, it is estimated that annual production capacity of about 13,000 about Taiwan’s future production capacity will be gradually AESC, and in 2011 in Taiwan to reach the scale of 65,000.
By AESC Li-ion Latitude D830 battery production, mainly to supply Nissan in 2010 in the United States and Japan’s production of electric vehicles, as well as the Nissan Hybrid cars. Does not rule out future AESC will supply its products to other automobile manufacturers.

How To Equalizing Battery Packs?

Friday, July 31st, 2009

Many battery packs are made up of individual battery cells. When batteries are purchased to be made into a pack it is a good idea to equalize the charge on the batteries before building the pack.

Equalizing the batteries is nothing more than ensuring the voltage on each cell is within a very close range at the same state of charge (i.e. fully charged).

If you do not equalize the batteries properly before building a pack, the charge and discharge cycles will be harder on some of the cells and will effectively shorten their life. Once a cell fails the entire pack will be weaker because of the one defunct cell.

There are a couple of ways to equalize a set of batteries:

  • The first way is to connect the set that will go in the pack in a parallel configuration. Leave them in this state for at least 24 hours. The cells that have a higher charge will charge the ones with a lower charge and they will all equalize.
  • The second way is to put them in a parallel configuration again, but charge them together at 1.4V, current limited to total capacity divided by 40 (e.g. 3000mAh/40 => 75mA current limit). This may be faster than equalizing via the previously mentioned parallel method and you will start with a charged set of cells when you make the pack. Be sure to have an accurate voltmeter to check the charge voltage.