Lithium ion battery is the first choice of electric vehicle power supply?

Source: 2020 - 04 - 10 then hits: lithium ion battery is the main power source of electric cars at present, energy shortage and environmental pollution has become a problem urgently to be solved in the international community. On the one hand, the excessive development and overuse of energy threatens the availability of energy. In terms of China's current energy situation, oil and natural gas per capita is only 1/15 of the world average. On the other hand, the energy problem caused by environmental pollution is very serious. Haze pollution in most cities in north China. In fact, in the amount of air pollution, 60% of the gases are contaminated by fuel cars caused by automobile exhaust emissions into the air. Therefore, advocating energy conservation and emissions reduction, promote the green circle development of energy, is an effective way to solve the energy crisis and environmental problems. The emergence of electric cars played an important role to solve these problems. It has no pollution, low noise, high energy conversion efficiency, without the advantages of internal combustion engine oil pump, so the car has simple structure, low maintenance cost. It USES electricity instead of oil, the advantages of both to avoid the pollution of the environment, and the recycling of electricity are realized. In Beijing, the government has begun to encourage units and individuals to buy electric cars, and plans in various residential areas and main roads are installed on the electric vehicle charging pile. Development of electric cars, however, the first solution is power battery. At present, the commonly used power battery is lithium ion battery. This is because compared with other batteries, lithium ion batteries have the advantages of high density, high working voltage, no memory effect, storage and long cycle life, safety, quick charging, allowable temperature range wide, do not contain harmful substances ( Cadmium, lead, mercury, etc. ) Can cause pollution to the environment. In addition, the lithium ion battery has not only been popularized in the electric car industry, and in all kinds of portable electronic products, aerospace and other fields has been promoted. According to the Chinese chemical physical power industry association statistics, in 2010 alone, China produced 500 million pieces of nickel cadmium battery, 10. 500 million pieces of nickel metal hydride batteries, 2 billion pieces of lithium ion battery, increased significantly. Therefore, lithium ion battery has very broad market prospect