It is reported that "Twelfth Five-Year" National 863 Program with the support of "high-energy lithium-ion battery system and battery technology development" project made significant progress. The project to develop lithium iron phosphate cathode materials, high-energy lithium-ion batteries as the goal, to carry out the lithium-ion battery materials and cell design techniques, including domestic research and evaluation of lithium iron phosphate cathode material, aluminum foil coating technology and diaphragm coating Layer Technology Research. The R & D unit has a capacity of 138.6 watt hours / kg, a power density of 915.6 watts / kg, and a capacity retention rate of 94.1% after 1200 cycles. The results have been applied to batch production of 50 Ah energy-type power batteries on. 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 has also made important progress in the localization of manufacturing equipment and has developed a fully automatic closed automatic feeding system, battery plate automatic laminating machine, large-capacity battery automatic filling machine, battery can automatically clip the battery Into the fixture, and the establishment of automated lithium-ion battery test with the production line group, which greatly enhance the consistency of the battery, battery grouping rate greater than 95%, to meet the high requirements of automotive applications has taken an important step.