It's too early to replace the fuel truck. Five disadvantages of current new energy vehicles are briefly discussed.

New energy vehicles, which we call electric vehicles, actually have an earlier history than fuel vehicles. As early as 1834, American Thomas Davenport made the world's first electric car driven by DC engine. The world's first battery electric vehicle was also born in 188 1, still earlier than the first fuel vehicle. Today, with the oil crisis coming, electric vehicles have a chance to turn over. But so far, due to the technical bottleneck of new energy vehicles, it will take time to completely replace fuel vehicles. This article will talk to you about the five existing disadvantages of new energy vehicles.

Disadvantages 1: The manufacturing process of electric vehicles is not environmentally friendly.

A survey shows that the lithium battery that new energy vehicles rely on will produce a lot of pollution in the production process, and the lithium mine mining process is not environmentally friendly. An electric car has emitted more than 25,000 pounds of carbon dioxide when it comes off the production line, while it only takes16,000 pounds to make an ordinary car.

Therefore, lithium batteries can only be a temporary choice for the power source of new energy vehicles. With the emergence of energy sources such as graphene and the mature coverage of future technologies, lithium batteries will be withdrawn from the stage, and production pollution will be greatly reduced when new energy vehicles are manufactured.

Disadvantage 2: The pollution of waste batteries to nature is incalculable.

The new energy vehicles appearing in China's market are all electric-driven, so they are called environmentally-friendly vehicles because they will not emit carbon dioxide. Although new energy vehicles themselves will not pollute the environment by emitting carbon dioxide, the batteries contained in them are also the biggest source of pollution. If discarded at will, the harm to soil will be far greater than that of fuel vehicles.

If the pollution caused by fuel vehicles is tangible, the pollution caused by new energy sources is hidden, and the problem of battery recycling cannot be completely solved, then the harm to nature will far exceed the exhaust emissions of fuel vehicles.

Disadvantage 3: The manufacturing process of electricity is at the expense of polluting the environment.

The data shows that at this stage, most of China's power generation depends on coal-fired power generation, accounting for more than 70%. Although there are also wind power generation, hydropower generation and solar power generation. The proportion is very small, so the electricity needed by electric vehicles is more from thermal power generation, which is very polluting to the environment. That is to say, although electricity does not pollute the environment, the process of power generation seriously pollutes the environment.

Then, in the future, if coal is no longer the main power generation, but more clean power generation, then the electricity used by new energy vehicles will be more environmentally friendly, and the "pseudo-environmental protection" hat of new energy vehicles can be really removed.

Disadvantage 4: New energy vehicles are affected by battery attenuation, and the preservation rate is low. A car can't be used for a long time, which wastes resources.

At present, the battery power of new energy vehicles is greatly attenuated after long-term use, which leads to the preservation rate of new energy vehicles is much lower than that of fuel vehicles, and the cost of replacing batteries is very high, which also makes the life of new energy vehicles very short. Fuel vehicles can generally be used for more than 10 years, but it can't be realized on electric vehicles, which leads to more frequent updates of new energy vehicles and a corresponding increase in vehicle costs. Although charging is cheaper than refueling, it is obvious that it will cost more to change a car in a few years, and making more new energy vehicles will also lead to a waste of resources. If batteries that can be used for a long time can be popularized in the future, or the cost of replacing batteries can be reduced, and the life cycle of new energy vehicles can be greatly extended, then new energy vehicles will have more existence value.

Disadvantage 5: At present, the battery life and charging of new energy vehicles are still a problem.

Because the temperature has the greatest influence on the charging and discharging performance of the battery, if the temperature drops, the reaction rate of the electrode will also drop, and the power output of the battery will also drop, while if the temperature is too high, the charging speed of the battery will also be greatly reduced. In order to effectively charge lithium batteries, the ambient temperature should be between 0 and 28 degrees. In this range, the charging efficiency will generally increase with the increase of temperature. However, when the temperature is lower than 0 degrees or higher than 40 degrees, the performance of the rechargeable lithium battery will deteriorate and the cycle life of the battery will be greatly shortened.

Therefore, for example, in northern China, when it is cold in winter and hot in summer, the endurance of new energy vehicles will be reduced, and the endurance in winter will even drop by more than 40%, which makes countless car owners miserable.

In addition, it takes time to charge new energy vehicles. Although many products can complete 80% charging in 40 minutes, it can only be said that it has improved compared with the past, which is not the same as the refueling speed of fuel vehicles.

Conclusion: In the final analysis, so many disadvantages of new energy vehicles are caused by the technical bottleneck of new energy vehicles at present. Battery technology has developed for a hundred years, but there is no huge technical update, which is also an important factor restricting the development of new energy vehicles. Only by using more environmentally friendly batteries, more environmentally friendly power generation technology and increasing the service life of new energy vehicles can these problems be solved, and new energy vehicles can truly have the strength to replace fuel vehicles. Now, there is still a long way to go.

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.