Presentation on theme: "By:. Outline Introduction History Comparison with internal combustion engines How electric Car works ? Currently available electric cars Advantages and."— Presentation transcript:
Outline Introduction History Comparison with internal combustion engines How electric Car works ? Currently available electric cars Advantages and disadvantages Future
Introduction An electric car is an alternative fuel automobile that uses electric motors and motor controllers for propulsion, in place of more common propulsion methods such as the internal combustion engine (ICE). Electric cars are specifically a variety of electric vehicle intended for use as a road-going automobile. Electric cars are commonly powered by on-board battery packs, and as such are battery electric vehicles (BEVs). Electric cars currently enjoy relative popularity in countries around the world for their eco-friendly nature.
History The invention of the electric vehicle is attributed to various people, including the Hungarian inventor of the electric motor, Ányos Jedlik, Vermont blacksmith Thomas Davenport, Professor Sibrandus Stratingh of Groningen, the Netherlands, and Scotsmen Robert Davidson and Robert Anderson. The invention of improved battery technology, including efforts by Gaston Plante in France in 1865, as well as his fellow countryman Camille Faure in 1881, paved the way for electric cars to flourish in Europe.
Comparison with internal combustion engine vehicles Price Electric cars are generally more expensive than gasoline cars. The primary reason is the high cost of car batteries Running costs and Maintenance Most of the running cost of an electric vehicle can be attributed to the maintenance and replace- ment of the battery pack because an electric vehicle has only around 5 moving parts in its engine. Pollution Electric cars produce no pollution at the tailpipe, but their use increases demand a for electricity generation Energy efficiency Internal combustion engines are relatively inefficient at converting on-board fuel energy to propulsion as most of the energy is wasted as heat as compared to electrical engines. Sound Production Electric cars produced less roadway noise as compared to vehicles propelled by a internal combustion engine
How electric Car works ? An electric car is an alternative-design automobile that uses an electric motor to power the car, with the electricity being provided by a battery. While a conventional car does have a lead-acid battery as part of its standard equipment, this battery is for operating the starter and not powering the vehicle. Electric cars have a motor just like conventional, internal combustion engine cars. The difference is that the power supply is derived from battery-stored electricity rather than the mechanical power derived from burning gasoline. The batteries used in electric cars vary in design, and include the lead- acid type familiar to all conventional car owners (albeit, much larger than in a normal car), lithium ion (similar to those used in laptops and mobile phones, but once again much larger), molten salt, zinc-air, and various nickel-based designs.
Currently available electric cars The Tesla Roadster is sold in the US and Europe and has a range of 245 miles per charge. The REVAi, also known as the REVA G-Wiz is available in several countries around the world. The Th!nk City is sold in several European countries and production began in the U.S. in late 2010 Sales of the Mitsubishi i MiEV to the public began in Japan in April 2010, in Hong Kong in May 2010 and in Australia in July The remainder of currently available electric cars are mostly low- speed, low-range neighborhood electric vehicles, electric city cars as well as some small-scale commercial conversion of internal-combustion based vehicles
Advantages of electric car Electricity is readily available. Since there is no IC engine, the vehicle runs noiselessly, in fact many times you wont even know that some vehicle has just passed beside you. There are no emissions from EVs, hence they are environmental friendly. Manufacturing the EV is very easy; you have to merely assemble various components of the vehicle. This is especially true for small motorcycles or mopeds. EVs require less maintenance.
Disadvantages of Electric Cars The major disadvantage of EVs is that the battery has to be charged regularly. The normal working range of battery is about miles and it takes about 6-8 hours to recharge completely. If you are traveling a long distance, you may be at the risk of the battery getting discharged. As such there are no battery charging stations available on roads and highways. Your home must be outfitted with a charging station to recharge the car battery. Your electric bill will probably increase as you have to draw power from your home electrical system to charge your car. Electric cars cannot compete with gas powered cars in terms of speed and acceleration
Future The future of battery electric vehicles depends primarily upon the cost and availability of batteries with high specific energy, power density, short charge time and long life, as all other aspects such as motors, motor controllers, and chargers are fairly mature and cost-competitive with internal combustion engine components. Li-ion, li-poly and zinc-air batteries have demonstrated specific energy high enough to deliver range and recharge times comparable to conventional vehicles. Diarmuid o'connell, vp of business development at tesla motors, estimates that by the year % of the cars driving on the road will be battery, electric or plug-in hybrid. It is estimated that there are sufficient lithium reserves to power 4 billion electric cars.