Electric cars will become the mainstream of future cars.

 

The process of human industrialization has gone through the steam age, the internal combustion engine age, and the electrification age. It is still in the second half of the electrification age. The ultimate goal is the full electrification of society. Trends: First, in railway transportation, electric locomotives replaced internal combustion engines; then in the field of unmanned aerial vehicles, electric motors replaced internal combustion engines; then in the field of automobiles, but also in the field of ships; the field of manned aviation was affected by energy density and The specific driving mode restrictions may not be fully electrified.

 

In the past, model airplanes were actuated by diesel engines, which required operators to have considerable skills and experience to overcome extreme complexity and difficulty. Therefore, it was still difficult to miniaturize, and therefore, it was difficult to realize airplane models. Mass popularization; and since the emergence of electric multi-rotor drones, it has become quite simple. Why? Because the flight control computer can adjust the parameters of each motor hundreds of times per second, while on the internal combustion engine, drones have quickly become a major industry.

 

The all-electric propulsion of ships is also a trend. First of all, starting from the warship, the 055 initial big drive gradually adopts all-electric propulsion. The benefits are: simplification of the complex mechanical transmission and speed change mechanism; greatly changed noise; more flexible power adjustment, and so on.

 

From the perspective of automobiles, the advantages of electric vehicles over traditional gasoline vehicles are still quite obvious, and they will become more and more strengthened:

 

1) The mechanical structure is greatly simplified, without the need for complicated gearboxes and transmission mechanisms. The complicated differential locks and other mechanical and electronic devices on the past off-road vehicles will not be needed in the future. In the future, it will be easily solved by using hub motors, and even the car can turn around in place ；

 

2) Simplified maintenance, no chemical combustion process, no complicated mechanical structure, natural maintenance is much simpler;

 

3) More environmentally friendly: Some voices on this issue are controversial. They believe that electric vehicles are not environmentally friendly in terms of the full life cycle of electric vehicles. One point of view is that the electricity from the grid used by electric vehicles is mainly to replace coal power; the other point of view is lithium battery production. The environmental problems that arise when it is scrapped are also great.

 

I think these two views are static views: in 2017, coal power accounted for only 60%, and the conversion of wind power in the future will continue to reduce the cost of photovoltaics, and the proportion of coal power will continue to decline; and the production of lithium batteries will be scrapped. Industrial development and technological progress will always be properly resolved. The exhaust emissions of gasoline trucks are the most important source of PM2.5, and this problem is unsolvable.