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全靠电池驱动的汽车 4秒从0到60公里/时[图]

[日期:2006-07-22] 来源:  作者:[字体: ]
文章概要:<SPAN>和EV-1不同,Tesla 公司开发的电动汽车一次充电可以跑250 公里,它使用了锂离子电池,其电量为EV-1电量的3 倍,另外,它的电池重量也只有900 磅左右,EV-1的电池重量超过了1100磅。</SPAN
作者: CNET科技资讯网 译:李海
CNETNews.com.cn 2006-07-20 09:04:32 AM

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CNET科技资讯网7月20日国际报道 加州一家公司星期三推出了一种电动车,速度相当的快,价格相当的贵。

Tesla 汽车公司已经花费了2500百万美元开发出了一种两人座的敞篷小汽车,其价格在8.5 万到10万美元之间。

这种汽车能够在4 秒钟内将速度从0 提高到每小时60公里,全靠电池做动力。

通用汽车用了10年时间开发出了一种EV-1电动汽车,许多环境保护主义者们希望它可以成为新潮流的先锋,但通用汽车最后却放弃了这种汽车,原因是它的里程数低于100 公里,这使得EV-1无法上市销售。

和EV-1不同,Tesla 公司开发的电动汽车一次充电可以跑250 公里,它使用了锂离子电池,其电量为EV-1电量的3 倍,另外,它的电池重量也只有900 磅左右,EV-1的电池重量超过了1100磅。

EV-1将26块电池连接到一起,Tesla 公司的电动汽车则将6831块电池组合在了一起。这样做的好处是可以将电量集中到一起,另外,如果一块电池坏了,车载电脑将很快查明位置,同时也不会影响其它电池的使用。

这种新型电动车具有一个240 伏电压的充电器,它能够在3 个半小时之内将汽车电量从0 充满,它还可以使用美国家用的110 伏电压,但充电的时间要更长一些。

环保主义者们将Tesla 公司开发的电动汽车称为一个卓越的突破,因为它不使用汽油,全靠清洁的电力作为动力。

目前,美国每加仑的汽油价格为3 美元,用电的成本要更低一些。

Tesla 公司将从星期三开始接受这种电动汽车的预定,明年中期开始上市销售这种新型汽车,公司希望,未来三年,他们能够销售出4 千至5 千辆这种汽车。

Zero to 60 in 4 Seconds, Totally From Revving Batteries

Published: July 19, 2006

WASHINGTON, July 18 — In a new approach to making the electric car a mass-market product, a California company will unveil on Wednesday a model that is very specialized, very expensive and very, very fast.

Tesla Motors, a four-year-old Silicon Valley start-up, has raised $60 million and spent about $25 million developing a two-seat Roadster that will sell for $85,000 to $100,000.

It goes from zero to 60 miles an hour in four seconds, “wicked fast,” said the company’s chairman, Martin Eberhard. Because it is an electric, the driver does not have to shift into second gear until the car hits 65, he said.

The Roadster comes 10 years after the introduction of another two-seat electric car that was hailed as a breakthrough in technology, the EV-1 made by General Motors. While many environmentalists had hoped that would be the vanguard of a new trend, G.M. withdrew that car as the three-year leases expired, saying that its limited range — less than 100 miles — made it unmarketable.

The recent movie “Who Killed the Electric Car?” argues that G.M. and California conspired to kill a vehicle that would have been popular. The EV-1 was leased on a basis comparable to a vehicle in the mid-$30,000 range.

In contrast to the EV-1, the Roadster is supposed to go about 250 miles on a single charge. It uses lithium-ion batteries, the kind most commonly found in laptops, and carries about three times the energy the EV-1 did, although the battery pack weighs only about 900 pounds; the original EV-1 battery pack weighed more than 1,100 pounds.

And where the EV-1 had 26 batteries wired together, the Roadster has 6,831, arranged in what Mr. Eberhard called a complex network. The voltage of the batteries is added together, as if they were wired serially, like flashlight batteries. If one fails, only the computer running the car will notice, he said, and the effect on total energy storage would be like “dropping a couple of marbles in the gas tank of your car.”

The car comes with a kit that connects to a 240-volt circuit and charges the batteries from dead to fully charged in three and a half hours. It can also be charged on a normal 110-volt household outlet, but that takes longer.

At the Natural Resources Defense Council, an environmental group that is not normally a fan of fast cars, Ralph Cavanagh, co-director of the energy program, called the roadster “a remarkable potential breakthrough” because it does not use oil and can be powered by clean sources of electricity.

The last round of electric vehicles was built in anticipation of a “zero emission vehicle” quota to be imposed by California, but the state dropped the mandate.

The Roadster’s advantage is that it avoids gasoline at $3 a gallon. At the national average retail price for electricity and fuel economy of 200 watt-hours per mile, it will go 150 miles on the price of a gallon of unleaded regular.

Still, saving money presumably won’t be the prime motivation of most potential buyers, since to earn back the $65,000 premium over a two-seater like, say, the Mazda Miata, would require more than 700,000 miles of driving.

According to Mr. Eberhard, the way to get a new product into the mass market is to sell it to rich people.

“Cellphones, refrigerators, color TV’s, they didn’t start off by making a low-end product for masses,” he said. “They were relatively expensive, for people who could afford it.” The companies that sold those products at first, he said, did so “not because they were stupid and they thought the real market was at the high end of the market,” but because that was how to get production started. His company and others that have tried electric cars, he said, are too small to produce by the tens of thousands anyway.

The company will start taking orders on Wednesday and hopes to begin deliveries in the middle of next year, he said. It hopes to sell 4,000 to 5,000 over three years and then move on to a larger, more mainstream vehicle. 

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