Electric Vehicles (EVs)

Electric vehicles (EVs) are propelled by an electric motor (or motors) powered by rechargeable battery packs. Electric motors have several advantages over internal combustion engines (ICEs):
  • Energy efficient. Electric motors convert 75% of the chemical energy from the batteries to power the wheels-internal combustion engines (ICEs) only convert 20% of the energy stored in gasoline.
  • Environmentally friendly. EVs emit no tailpipe pollutants, although the power plant producing the electricity may emit them. Electricity from nuclear-, hydro-, solar-, or wind-powered plants causes no air pollutants.
  • Reduce energy dependence. Electricity is a domestic energy source.
  • Performance benefits. Electric motors provide quiet, smooth operation and stronger acceleration and require less maintenance than ICEs.
The Down Side: Batteries
EVs face significant battery-related challenges:
  • Driving range. Most EVs can only go 150 miles (or less) before recharging-gasoline vehicles can go over 300 miles before refueling.
  • Recharge time. Fully recharging the battery pack can take 4 to 8 hours.
  • Battery cost: The large battery packs are expensive and usually must be replaced one or more times.
  • Bulk & weight: Battery packs are heavy and take up considerable vehicle space.
Researchers are working on improved battery technologies to increase driving range and decrease recharging time, replacement frequency, weight, and cost. These factors will ultimately determine the future of EVs.

Information Articles News Links
other news:
11/26/2014 10:25 AM
Renault-Nissan's electric car sales hit 200,000
Drivers are learning to stop worrying (about range anxiety) and are starting to love plug-in electric vehicles.
11/25/2014 03:17 PM
Electric vehicle range extenders attract over $125 billion report IDTechEx
The new IDTechEx report, “Range Extenders for Electric Vehicles 2015-2025” www.IDTechEx.com/range analyses and forecasts options and trends for range extenders in all applications. It finds that over $125 billion will be spent on them by 2025.
11/17/2014 09:13 PM
Electric vehicles move closer to widespread use, experts say
"What infrastructure do we need for people who own electric vehicles where they know it's easy to charge them, it's quick to charge them, there are lots of spots to charge them, not only within the city, but perhaps along the highway?" she asks. Enter PowerStream, a community-owned energy company that provides power and services to more than 370,000 customers in communities north of Toronto ...
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EVs ON WIKIPEDIA  ·  EVs HISTORY ·  U.S. Patent 1,017,198 , E. W. Bender, Electric Motor vehicle

source: www.fueleconomy.gov

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