01-27-2012, 08:43 AM
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Tesla's Model S Sets a New Standard for Battery-Powered Cars
Until now, there hasnít been an all-electric car fit for road-tripping. But Teslaís Model S, due out late in 2012, is made for extended drives. Its battery goes up to 300 miles on a charge. Its cabin is spacious enough for seven passengers. And it can get up to cruising speed fastóthe Model S accelerates from 0 to 60 in 5.6 seconds.
At 85 kilowatt-hours, the Model S boasts more than triple the battery capacity of the Nissan Leaf. Its thousands of lithium-ion cells use a new electrode chemistry from Panasonic, which could allow them to store more power than other comparably sized cells.
Tesla plans to install proprietary 440-volt charging stations (first along the I-5 Corridor between Los Angeles and San Francisco) built to match up with the Model Sís circuitry. They will provide a full charge in an hour. Standard chargers will require a full night.
To protect the motor, circuitry and battery from heat, channels filled with liquid coolant run through the components. Pumps cycle coolant through a front radiator and a pair of A/C condensers. This helps the motor deliver twice the power of its Roadster predecessor.
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To increase the sedanís range, the designers of the Model S kept its weight low with a body constructed from 97 percent aluminum. They added heavier structural steel only where necessary for safety: in central supports and front-end crash zones.
The Model Sís batteries sit beneath the floor in a large flat pack that spreads the width of the car and about two thirds of its length. This arrangement leaves ample space in the trunk for cargo or two backward-facing jump seats. The main interior holds five adults.
Top Speed:130 mph
Range: 300 miles
Seats: Five adults, two children