Recently, the Ministry of Science released news that "high-energy lithium-ion battery system and battery technology development" project made significant progress. Among them, for electric vehicles with 38.4 volts / 50 Ah battery module energy density reached 121 watt hours / kg, the power density of 800 watts / kg; 345.6 volts / 50 Ah battery system has been used in Chery small electric cars and Austrian New pure electric sanitation truck. The project also made important progress in the localization of manufacturing equipment, developed a fully automatic closed automatic feeding system that automatically clamps the battery battery into the fixture, which greatly enhances the battery consistency, battery cell grouping rate greater than 95%. Edited to see this car with high-energy lithium-ion battery technology breakthroughs in meeting the high requirements of automotive applications has taken an important step forward, but also for the commercialization of electric cars to move forward a big step forward. Energy, environment and transportation are the three major bottlenecks restricting the development of automobiles. They are also the source for the development of electric vehicles. It should be said that after the commercialization of electric vehicles in the future, the first two problems will be effectively alleviated, but the traffic problem still has no solution. Therefore, in Beijing, even the purchase of pure electric vehicles still need to "shake number."