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Electric vehicles, urban hope
Human concerns about quality of live are rapidly growing in 20 century. Negative environment issues are resolving in many ways. Cars with eternal combustion motors seriously pollute urban areas. Emissions of toxic carbon monoxide and dioxide, noise and vibrations got negative impact on human’s quality of life. Many cities overcrowded with vehicles and polluted air are trying to do their best to avoid such negative impacts. Implementation of electric vehicles is one of the most serious cures to this situation. In favor of electric vehicles goes great technical and technological development in area of rechargeable batteries, electronic controllers and electric motors. Nowadays, many cities in the word got zero negative emissions tolerance in their centers. Only way to achieve that is encouraging implementation and further research in the area of electric vehicles. Recent improvements in batteries charging, improving of battery specific power, reducing battery specific weight, implementing of new materials are pushing idea of man relaying on electric vehicles. Nickel cadmium batteries can hold double the power of lead acid. Temperature high Sodium Nickel can hold tree times the power. This is great improvement, but it’s still not enough to provide bigger moving span to electric vehicles. Let’s make some assumptions. 45 liters or 10 gallons of petrol will give a vehicle moving range of 450 km or 300 miles. To take that distance electric vehicle will require 800 kg lithium battery. That’s great deal of weight, so further research and improvement of battery characteristics will deliver smaller and lighter batteries.
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