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:
10/07/2014 01:20 PM
IDTechEx: Electric Vehicles – A $533 Billion Credible Prospect
Electric Vehicles are on a roll, with the global market forecast for all hybrid and pure electric vehicles expected to exceed $533 billion in 2025. These are the new findings by an
10/15/2014 02:53 PM
IDTechEx: The Surreal World of $500 Billion Electric Motors for EVs
Analysts IDTechEx finds over $500 billion will be spent on electric traction motors for electric vehicles between 2014 and 2025. With the number of these motors per vehicle rapidly increasing, IDTechEx closely examines a host of reasons why, in the new report “Electric Motors for Hybrid and Pure Electric Vehicles 2015-2025: Land, Water, Air www.idtechex.com/emotors.
10/21/2014 10:01 PM
Tesla blocked from Michigan with law backed by dealers, General Motors
Tesla Motors' long-running fight to sell its electric vehicles through factory stores rather than franchised dealers had been something of a draw recently, with victories in New York and Ohio offset by a ban in New Jersey. Today, that tide turned against Tesla after Michigan Gov. Rick Snyder signed a bill — backed by the state's auto dealers and General Motors — that Tesla says not only bars its ...
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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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