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※twitterでUCニュース配信はじめました。ユーザー名 a77a フォロー自由です

2008/01/24

古河電池のウルトラバッテリー(鉛電池+ultracapacitor)



「ウルトラバッテリーは(豪)CSIRO社が開発し、古河電池が製造し、(米)鉛電池コンソーシアムによって英国で試験している。HVテスト車両(ホンダインサイト)は、ちょうど今英国で100,000マイル(160,000km)を完了。また、ウルトラバッテリーは再生可能エネルギーの蓄電ストレージとして使用されている」とのこと。

CSIRO's UltraBattery to power hybrid cars
ソース:http://www.itwire.com/content/view/16141/1066/

Written by Stuart Corner Thursday, 17 January 2008
The CSIRO has developed a revolutionary 'UltraBattery' for use in hybrid petrol/electrical vehicles that combines supercapacitor and conventional lead acid battery technology into a single unit. It is able to deliver the benefits of both technologies and with much lower cost and longer life that a conventional battery. A test vehicle using the UltraBattery has just completed 100,000 miles (160,000km) of testing in the UK and vehicles using the technology are expected to be in dealers' showrooms within two years.The combination of supercapacitor and battery is attractive for hybrid vehicles because the capacitor is able to deliver power at high levels in short bursts for acceleration and to receive high levels of power input, such as that produced by regenerative breaking. However capacitors are very poor at storing electrical energy over long periods. Batteries, in contrast are excellent for long term storage but do not like being rapidly charged or discharged.However, there are cost, space and weight penalties from using both technologies and complex electronics needed to manage the flow of electrical energy into and out of supercapacitor and the battery add considerably to the cost.The UltraBattery eliminates the need for all the control electronics required to manage electrical energy flows in a dual capacitor/battery system because energy flows are determined at a 'chemical' level by the internal construction of the unit."It is as though the positive plate as been split into two: one half lead [the battery] and one half carbon [the capacity] and that is what the first of our patents relates to," David Lamb, leader of low emissions transport research at CSIRO told iTWire. "The second patent relates to how you make this into a battery in the factory."During development of the UltraBattery the CSIRO discovered that the inclusion of the 'capacitor' created a better battery, and this is what makes the device so attractive. "The inclusion of the carbon seemed to help the battery avoid all the usual battery problems so it lasts four to five times longer that an conventional lead acid battery. That extended battery life is a real plus," Lamb said.He said that, initially the research team had expected use of the UltraBattery to be limited to mild' hyrids - those that are predominantly driven by their internal combustion engine but with some electrical assistance. "After all this testing we are now very confident we can support medium hybrids [like the Toyota Prius] or even full, plug-in hybrids [which are charged overnight from a power point]," Lamb said.
The test vehicle was a Honda Insight: a production hybrid (no longer in production) that used a nickel metal hydride battery (the same technology as powers the Toyota Prius). "Our goal was to fit our battery into the same space," Lamb said. "It is 17kg heavier and that creates a fuel consumption penalty of 2.8 percent. But it is about one quarter of the cost, so you save around $2000 on the cost of building the car."The UK test was undertaken in collaboration with the Furukawa Battery Company of Japan, which manufactured the battery and the US Advanced Lead-Acid Battery Consortium.Lamb said it was likely that Japanese car manufacturers would be well-advanced in the development of production vehicles using the new UltraBattery. "They will have had these batteries on test for a year and if they have done as well as that car in England they will be as thrilled as we are and will be doing their best to find ways to milk the technology in some future model. But they don't tell us what they are doing." However he predicted that cars using the UltraBattery would be in showrooms with two years.The CSIRO is also involved in a company which is looking to commercialising the UltraBattery technology for renewable energy storage from wind and solar power generation, "That will require a totally different approach to battery building," Lamb said.
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●UltraBattery sets new standard for HEVs
ソース:http://tandlnews.com.au/2008/01/17/article/KHIGJXEGFK.html

The odometer of a low emission hybrid electric test vehicle reached 100,000 miles as the car circled a track in the UK using the power of an advanced CSIRO battery system.The UltraBattery combines a supercapacitor and a lead acid battery in a single unit, creating a hybrid car battery that lasts longer, costs less and is more powerful than current technologies used in hybrid electric vehicles (HEVs).“The UltraBattery is a leap forward for low emission transport and uptake of HEVs,” said David Lamb, who leads low emissions transport research with the Energy Transformed National Research Flagship.“Previous tests show the UltraBattery has a life cycle that is at least four times longer and produces 50 per cent more power than conventional battery systems. It’s also about 70 per cent cheaper than the batteries currently used in HEVs,” he said.By marrying a conventional fuel-powered engine with a battery to drive an electric motor, HEVs achieve the dual environmental benefit of reducing both greenhouse gas emissions and fossil fuel consumption.The UltraBattery also has the ability to provide and absorb charge rapidly during vehicle acceleration and braking, making it particularly suitable for HEVs, which rely on the electric motor to meet peak power needs during acceleration and can recapture energy normally wasted through braking to recharge the battery.Over the past 12 months, a team of drivers has put the UltraBattery to the test at the Millbrook Proving Ground in the United Kingdom, one of Europe’s leading locations for the development and demonstration of land vehicles.“Passing the 100,000 miles mark is strong evidence of the UltraBattery's capabilities,” Mr Lamb said. “CSIRO’s ongoing research will further improve the technology’s capabilities, making it lighter, more efficient and capable of setting new performance standards for HEVs.”The UltraBattery test program for HEV applications is the result of an international collaboration. The battery system was developed by CSIRO in Australia, built by the Furukawa Battery Company of Japan and tested in the United Kingdom through the American-based Advanced Lead-Acid Battery Consortium.UltraBattery technology also has applications for renewable energy storage from wind and solar. CSIRO is part of a technology start-up that will develop and commercialise battery-based storage solutions for these energy sources.
/(豪)CISRO社
http://www.det.csiro.au/science/de_s/de_s_topics.htm
/tddaily
http://www.tgdaily.com/content/view/35693/113/


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