new energy vehicles, which is what we call the electric car, in fact, its history older than fuel vehicles. As early as 1834, Americans Thomas middot; Davenport would create the world’s first DC-powered electric vehicles. The world’s first battery electric vehicles also born in 1881, is still earlier than the first fuel vehicles. And today, after being dominated motor racing car fuel over a hundred years, with the advent of the oil crisis, the electric car ushered opportunity to turn around. But so far, due to the new energy vehicles trapped in the technical bottlenecks, leading to still want to replace all fuel vehicles will take time, we will come and we talk about new energy vehicles existing five major disadvantages.
1 drawbacks: the manufacturing process itself is not environmentally friendly electric cars
[123 ] a survey shows that the lithium battery of new energy vehicles for the survival of the production process will produce a lot of pollution, lithium mining process is not environmentally friendly. When an electric car off the production line, it has discharged over 25,000 pounds of carbon dioxide, while the same manufacturing an ordinary car, only 16,000 lbs.
Accordingly lithium battery can only be a temporary select the current power source of new energy vehicles, along with the future of graphene covering mature energy technologies and the emergence of lithium batteries will exit the stage, then re-manufacturing new energy car production will greatly reduce pollution.
2 drawbacks: the improper disposal of batteries pollution of nature’s incalculable
now appear in the Chinese market, new energy vehicles are electric powered, because It does not emit carbon dioxide, so called green cars, although the new energy vehicle emissions of carbon dioxide itself does not pollute the environment, but also the largest of its body cells contain the pollution, if thrown away, causing harm to the soil will be much larger than fuel vehicles .
If the pollution caused by fuel vehicles is tangible, that new energy pollution caused by the secretive nature, battery recycling can not solve the problem, then the damage to nature will far exceed the fuel truck the exhaust emissions.
3 drawbacks: the power of the manufacturing process is polluting the environment at the expense of
data shows that the domestic stage largely dependent on thermal power generation coal, accounting for more than 70%, although there are wind power, hydroelectric power, solar power, but the proportion is very small, and therefore the required power electric cars, more thermal power is derived from the great environmental pollution, that although electricity is do not pollute the environment, but the process of power generation is a serious pollution of the environment.
[123 ]
so in the future, if power can no longer burn coal as the main power and replace it with more clean power generation, the new energy vehicles used power will also be more environmental protection, new energy vehicles, “pseudo-green” hat can really take off.
malpractice 4: new energy vehicles trapped battery impact attenuation, low hedge, a car can not be used for a long waste of resources.
today’s new energy vehicles due to the battery power significantly attenuated after prolonged use, leading to increasing the rate of new energy vehicles is much lower than fuel vehicles, and the cost of replacing the battery and high, also making the new energy vehicles life is very short. Fuel vehicles generally use more than 10 years, can not be achieved in electric vehicles, which also led to new energy vehicles more frequent updates, the car costs also increased, although the charge cheaper than refueling, but it is clear that a few years will cost car to be higher for Taiwan, at the same time create more new energy vehicles will lead to waste of resources. If the future can have long-term use of the battery can be replicated, or may also reduce the cost of battery replacement, new energy vehicles can significantly extend the life cycle, the new energy vehicles have more value worthy of existence.
5 drawbacks: Present and charge new energy vehicles still life problem
Since the temperature of the battery charge and discharge Effect maximum performance, if the temperature drops, the electrode response rate also drops, the power output of the battery will decline, and the temperature is too high, battery charging rate will be greatly reduced. In order to effectively charge the lithium battery ambient temperature range should be between 0 ° -28 °, typically within this range the charging efficiency increases with increasing temperature, but when the temperature is below 0 degrees or 40 degrees above the temperature reached performance may be degraded material rechargeable lithium battery, the cycle life of the battery will be shortened.
Thus, for example in northern China, the winter cold summer heat, new energy vehicles in use in endurance performance will be discounted, winter life even decline 40% or more, so many owners miserable.
Further still new energy vehicles charging takes time, although many products can do 80 percent complete 40 minutes the amount of the charge, but can only say that compared to the past been some improvement, still quite different compared to the speed and fuel vehicle refueling.
Conclusion:
said the new energy vehicles are so many drawbacks, in the final analysis are the current new energy vehicle technology bottlenecks caused by the battery technology development has been 100 years, but there is no huge technological update, which is an important factor in the development of new energy vehicles bound. More environmentally friendly batteries, more environmentally friendly power generation technologies as well as increase the life of new energy vehicles, to solve these problems, new energy vehicles to replace fuel vehicles can really have the strength, and for now, needs to be done.