Application of 48V Lithium Ion Battery Pack System in Automobile

　　(1) Due to the lag of battery technology innovation, the development of pure electric vehicles is slow. Therefore, some experts said that the hybrid power system is more in line with the current demand for energy conservation and emission reduction. In the hybrid power system, the 48V lithium-ion battery pack is the most cost-effective. Automotive lithium-ion battery pack is the power lithium battery of hybrid electric vehicles and electric vehicles. Due to the fact that the energy density, charging and discharging speed and other technical performances of MH Ni batteries are close to the theoretical limit, lithium ion batteries have been unanimously recognized by automobile manufacturers and battery manufacturers due to their high energy density, large capacity, no memory and other advantages. The focus of research and development in various countries is lithium ion batteries. The 48V system is an improvement and upgrade of the 12V micro hybrid system. BSG motor is used to replace the traditional starter motor and generator, which is equivalent to the enhanced automatic start stop system.

　　(2) In addition to the automatic start stop function, the 48V system can also provide auxiliary power when necessary to reduce fuel consumption during startup. As far as power lithium batteries are concerned, ternary lithium ion batteries, lithium iron phosphate batteries and lithium titanate batteries are used in the field of electric vehicles. 2020 is the technology upgrading stage. Industrialization of new lithium ion batteries. The specific energy of energy type lithium ion battery reaches 350whkg, and the specific energy of energy type power lithium ion battery reaches 200whkg. The intelligent manufacturing of power lithium battery has been realized, the product performance and quality have been greatly improved, and the cost has also been greatly reduced. The economy of pure electric vehicles is basically equivalent to that of traditional gasoline vehicles. Plug in hybrid vehicles have entered the stage of promotion and application.

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