Electric Cars. New England Electric Automobile Association. What you will learn. What is an electric car? How do they work? History of Electric Cars Present Electric Cars Future of Electric Cars/ X-prize Batteries and Charging. What is an electric car?. - PowerPoint PPT Presentation
Electric CarsNew England Electric Automobile AssociationWhat you will learnWhat is an electric car?How do they work?History of Electric CarsPresent Electric CarsFuture of Electric Cars/ X-prizeBatteries and Charging2What is an electric car?A vehicle with either 3 or 4 wheels that uses an electric motor (AC or DC) as its sole propulsion system. Most operate between 72 volts and 400 volts
In alternating current (AC, also ac) the movement (or flow) of electric charge periodically reverses direction. In direct current (DC), the movement (or flow) of electric charge is only in one direction.
Direct current (DC) is the unidirectional flow of electric charge. Direct current is produced by such sources as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can also be through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric charge flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for direct current was Galvanic current.
3How do they work?
History of Electric Cars
Thomas Davenports Electric Car1835Failed due to expensive motor and battery was not rechargeable
Jay Lenos1909 Baker1909 Baker 12 Alkaline Batteries, 110 mile range, top speed 25 mph steering via tiller, preferred by women.
5History of Electric CarsJay Lenos1909 Baker
Chevy S10 Electric1997 California Zero Emissions law production vehicles Solectria, EV1, RAV4, S10 click for each
6Present Electric Cars
ApteraSingle Gear Transmission Tesla, Coda, Leaf, Aptera7
Future of Electric Cars/ X-prize
Vehicles in both classes must have a fuel economy of 100 MPGe (21 kWh or 2.35 liters of petrol/100 kilometer) and produce less than 200 grams/mile CO2 emissions (measured well-to-wheel). For electric vehicles, the CO2 emissions requirement is a more binding constraint. Because CO2 emissions will be calculated assuming a national average of electricity sources projected to 2014, an all-electric car will have to achieve 114 MPGe in order to produce less than 200 grams/mile CO2 emissions. Further, electricity consumption is measured at the "plug" side of the battery charging device, so it would have to achieve 114 MPGe, assuming 100% efficient battery charging. If the charger were 85% efficient, this requirement would grow to 134 MPGe. In the other words, efficiency of electric cars should be not 21 but 16 kWh/100 km.
The alternate class vehicle must seat at least two people, accelerate from 0 to 60mph (97km/h) in 18 seconds or less, and be able to drive 100miles (160km) without refueling or recharging. The alternative vehicle has no minimum number of wheels, but it must remain upright when stopped with no driver inputs.
8Batteries and ChargingLead AcidManganeseLithium
Charging110v aka Level1220v aka Level 2High Speed aka Level 39For more InformationNEEAA on Yahoo GroupsElectric Automobile Association