Analyze the advantages and disadvantages of Tesla's electric vehicle battery technology

Analysis of the advantages and disadvantages of Tesla's electric vehicle battery technology Recently, news of Tesla's electric vehicles entering the Chinese market has frequently made headlines. What are the special features of Tesla? Does this conform to the development trend of automobiles? How safe is it? As an engineer who has worked for the three major automobile companies in the United States (Ford, GM, and Chrysler), I also want to talk about it Talk about your views on Tesla. Before we comment on Tesla, let's briefly analyze electric vehicles. The electric vehicle mentioned in this article refers to a pure electric vehicle with autonomous power, excluding hybrid vehicles and externally powered vehicles (such as trams). In the analogy of human walking, the engine and battery are equivalent to the heart that outputs energy, and the transmission system in the center is equivalent to the bones and muscles that transmit energy, and finally drives the bicycle wheels to move forward. As shown in the figure above, electric cars and gasoline cars have a heart, bones, muscles and feet, but the energy transmission path is different. Analysis of the advantages and disadvantages of Tesla's electric vehicle battery technology. Electric vehicles will not have exhaust gas. There are many advantages of electric vehicles: first of all, energy saving. As we all know, the energy source of traditional cars is petroleum. Compared with other important energy sources, oil reserves are small and non-renewable. Although experts have been arguing about how much oil remains to be exploited in recent decades, it is an indisputable fact that oil reserves have been declining and production has peaked. Faced with rising gasoline prices, motorists will agree with this statement. At the same time, there have been fierce political, economic, and even military struggles to control oil for decades because of inconsistencies between important oil processing countries (Middle East, Russia, and Central Asia) and important oil consumers (U.S., Western Europe and East Asia). This issue is also very important to our country. In 2013, my country surpassed the United States to become the world's largest oil importer, and its dependence on foreign oil was close to 60%. Therefore, the development of electric vehicles to reduce dependence on oil is of great significance to my country's economic security and geopolitical security. Electric vehicles use secondary power electricity. There are a wide range of sources of electricity, including renewable water, wind, solar, and potentially nuclear energy, as well as coal, which is much more abundant than oil. Therefore, if electric vehicles become popular, it will not only greatly change people's lifestyles, but also change the global geopolitical situation. The second benefit of electric vehicles is that they help combat smog. Automobile exhaust is an important source of urban smog. Now, all countries have stricter and stricter regulations on vehicle emissions. However, electric vehicles do not emit exhaust gas during driving, which has obvious advantages in controlling urban air pollution. In terms of total pollution, although coal-fired power generation is also polluting, large power plants consume more electricity than loose diesel locomotives, and emissions can be reduced through the assembly of power plants. The third point is the advantages of transmission and control, which involves some characteristics of electric vehicle transmission. For example, gasoline engines work at thousands of degrees Celsius and dozens of atmospheric pressures, requiring complex manufacturing technology, operating skills, and a messy and smooth system and cooling system (the system continuously releases the heat of burning precious gasoline into the atmosphere) . This engine needs regular maintenance and oil changes. The engine transfers energy to the wheels through messy gearboxes, drive shafts, and reducers. Most of the transmission process is realized by hard joints of metal gears and bearings. Everything requires a messy manufacturing process and a simple failure (think how many manufacturers have recalled because of automatic transmissions). All these problems are not problems with electric vehicles. The batteries and motors of electric vehicles generate heat, but the heat dissipation is much simpler than that of internal combustion engines. Don't mess with the fragile hard connections for the energy transmission of electric vehicles, just like flexible wires. Since the operation technology of the electric system is more complicated, the operation of the electric vehicle is relatively simple. For example, many people know that electric cars are faster than gasoline cars. This is because the regulating power of the engine is shorter than that of the internal combustion engine. Another example is that an electric vehicle can be relatively simple to install a separate motor on each wheel, instead of controlling the speed of each wheel. Therefore, the steering function of the car will begin to leapfrog. Due to dissemination issues. Statement: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.