CR2450 battery.Analysis of the advantages and disadvantages of Tesla electric vehicle battery technology

　　Recently, news about Tesla’s electric vehicles entering the Chinese market has repeatedly made headlines. So, what’s so special about Tesla? Does it conform to the trend of automobile development? What is its safety factor? As an engineer who has worked for the three major American automobile companies (Ford, General Motors, and Chrysler), the author also wants to talk about his views on Tesla.

　　Before discussing Tesla, let’s briefly introduce the background knowledge related to electric vehicles. The electric vehicles mentioned in this article only refer to pure electric vehicles with their own driving power supply, excluding hybrid vehicles and vehicles with external power supply (such as trams).

　　If we take the analogy of walking, the engine and battery are equivalent to the heart that outputs energy, and the transmission system in the middle is equivalent to the bones and muscles that transmit energy, and finally drive the feet-the wheels forward. As shown in the figure above, both electric cars and gasoline cars have "hearts, bones, muscles, and feet, but their energy transmission routes are different."

　　Electric vehicles produce no exhaust gas

　　Electric vehicles have many advantages:

　　The first is energy saving. As we all know, the energy source of traditional cars is petroleum. Relative to other major forms of energy, oil reserves are small and non-renewable. Although experts have launched many debates in recent decades about how many years there is enough remaining oil to exploit, it is an indisputable fact that crude oil reserves continue to decrease and production has reached its peak. I believe that car owners are facing rising prices The price of oil will definitely agree with this.

　　At the same time, due to the inconsistency between the main oil producing areas (the Middle East, Russia, and Central Asian countries) and the main oil consuming areas (the United States, Western Europe, and East Asia), various relevant countries have been engaged in intense political and political disputes over the control of oil for decades. Economic and even special games. This issue is also of vital importance to our country. In 2013, China surpassed the United States and became the world's largest oil importer, with its dependence on foreign oil approaching 60%. Therefore, developing electric vehicles and reducing oil dependence on foreign countries are of great significance to China's economic security and geopolitical security.

　　Electric vehicles use secondary energy - electricity. The sources of electric energy are very wide. In addition to coal, which has much richer reserves than petroleum, there are also renewable water energy, wind energy, solar energy, and nuclear energy with great potential. Therefore, if electric vehicles can be widely popularized, it will not only bring significant changes to people's lifestyles, but also change the global geopolitical landscape.

　　The second advantage of electric vehicles is that they help combat smog. Vehicle exhaust is an important source of urban smog. At present, various countries have increasingly stricter standards for vehicle exhaust emissions. Electric vehicles do not emit exhaust gas when running, and have obvious advantages in urban air pollution control. In terms of total pollution, although coal-fired power generation will also cause pollutants, the energy utilization efficiency of large power plants is higher than that of dispersed internal combustion engine vehicles. The centralized treatment of exhaust gases in power plants can also reduce the amount of exhaust gas emissions. reduce.

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