The application of electric vehicles and energy storage requires for the products with safety, high energy density, long life, low cost, industrialization as well as the proven technology, to match the rapid development of both industries, at present,lithium ion battery is an optimal choice.

　　Statistics show that in the international market, lithium-ion batteries and sodium sulfur battery have close installation proportion, respectively as 39% and 38%; lithium ion battery grows more rapidly . In Chinese market, lithium-ion battery has the largest share of 66%, lead battery and liquid flow cell’s ratio were 15% and 13% respectively. In recent years, the domestic lithium battery consumption situation has changed significantly, the ratios for mobile phone and notebook computer accounted for a decrease of 3% and 5% respectively, electric vehicles and energy storage increased by 5% and 2%, total production volume of new energy vehicles are 31137, an year-on-year increase of 328%. lithium ion battery is being consumed in the fields transfered from the electronics consumption to automobile industry system and storage system, application as power storage battery & power lithium battery will become the twin engines of lithium battery industry.