Friday, November 30, 2012

Government Motors Gives It Another Try

 Design News:

Unveiled at the Los Angeles Auto Show, the 2014 Chevrolet Spark EV uses a GM-designed, coaxial drive unit and electric motor that deliver 130 hp (110 kW) and 400 lb-ft (542 N-m) of torque. 
(Source: GM)

The new five-door electric car will employ a 20-kWh lithium-ion battery from A123 Systems Inc. that will give the Spark "one of the best EV battery ranges in its segment," GM said. With its 130-hp permanent magnet motor, it will go from zero-to-60-mph in eight seconds and will be the first vehicle to employ the new DC fast-charging standard from the Society of Automotive Engineers (SAE), which will enable it to reach an 80 percent battery charge in 20 minutes.

Inside, the vehicle will employ two high-resolution, seven-inch, color LCD screens; a MyLink radio for infotainment; and apps for navigation and global Internet radio.

That 20 minute 80% charge is key.  


Cinco-X said...

I wonder why there is such an intense focus on chemical energy storage, when a hybrid of a flywheel and a smaller battery should work as well. Spinning a flywheel up happens very fast, and energy could then be drawn off slowly to more efficiently charge a battery AND operate the vehicle.
I guess it's the danger of the flywheel coming apart in an accident that makes manufacturers wary. Same for fluid dynamic energy storage.

Rob Dawg said...

Same reason you won't find a micro turbine backup in an electric vehicle.

Cobradriver said...

I'm almost afraid to do the math on the voltage/current needed to charge a 20KW battery in 20 minutes.

Even just running it up to 80% from a half discharged state is insane...

Heck I'll ask....does this country teach basic math to anyone any more?
The sad part is when you try and explain the numbers,people still won't understand.

Should I talk about the thread I read regarding using "free" energy from your alternator to make hydrogen? I beat my head against the wall trying to explain how alternators generate power...