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:
03/04/2015 02:23 AM
FDG is Presented with the New Development Opportunities by Signing a Cooperation Framework Agreement with Kunming ...
HONG KONG, Mar 4, 2015 - (ACN Newswire) - FDG Electric Vehicles Limited (the "FDG Electric Vehicles", "FDG" or "Group", Stock Code: 00729.HK) is pleased to announce that in order to implement the Kunming government's "Implementation plan for the promotion and application of new energy vehicles and the industrial development" published at the end of 2014, Yunnan FDG Automobile Co., Ltd. (the ...
03/05/2015 02:25 PM
Geneva Motor Show: embracing the battery
At this year's Geneva Motor Show, there is clearly a bigger buzz among mainstream manufacturers about electric vehicles. According to Mercedes-Benz executive Harald Kroger, who oversees the company's e-drive vehicles, this growing interest could be because a battery-power breakthrough is on the horizon. The driving range of current electric vehicles is already improving but within 10 years, the ...
03/02/2015 10:24 AM
Energy Harvesting/ Regeneration for Electric Vehicles Land, Water & Air 2015-2025
Dublin, March 02, 2015-- Research and Markets has announced the addition of the "Energy Harvesting/ Regeneration for Electric Vehicles Land, Water& Air 2015-2025" report to their offering. The ...
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EVs ON WIKIPEDIA  ·  EVs HISTORY ·  U.S. Patent 1,017,198 , E. W. Bender, Electric Motor vehicle

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