Abstract
With the development of energy saving and environmental protection, the focus of lithium-ion battery applications will focus on power tools, light electric vehicles, new energy vehicles and energy storage systems. The industrial scale of those areas will keep a fast growth trend in the next few years, thus promoting the rapid development of the lithium battery market. The research on the lithium battery can provide theoretical basis for the development of the energy storage for the electric vehicle lithium battery and other new energy power generation system. Moreover, research on the core components of electric car lithium battery has been a hot spot of the current industry research, and lithium-ion battery performance determines the advantages of the electric vehicle in its service life, mileage, etc. Therefore, this paper analyzes the charge and discharge characteristics and other characteristics of the lithium-ion battery on the operating vehicles through experiment, and studies the 6-EVF-100 100AH model lithium battery pack in laboratory. Analysis of the charge and discharge performance of the electric car lithium-ion battery shows that the lithium battery pack owns the best performance at 25 °C, and its performance will be degraded in different degrees under other temperature conditions, but it’s still in good overall consistency. During the charge and discharge process of the lithium battery pack, the module temperature changes in a relatively stable way, and the battery is in good overall operation condition, but the performance of the battery in spring and autumn is more stable than that in summer and winter
