Fast Flexible Charging Strategy for Electric Vehicles Based on Lithium Iron Phosphate Battery Characteristics

Lithium iron phosphate battery has the characteristics of long cycle life, high energy density and green environmental protection, so it is widely used in the field of electric vehicle power battery. In this paper, the temperature characteristics of the lithium iron phosphate battery, voltage characteristics are studied, and combined with the battery charged state (state of charge, SOC) put forward a kind of charging of battery life strategy, and realize the rapid and flexible charging the battery. Finally, in the model built on MATLAB simulation platform verification, results show that the proposed method to improve the service life of the battery has obvious effect, and to a certain extent, improve the charging efficiency.