A Study on an Advanced Lithium-ion Battery System for EVs

This paper presents an extensive study concerning a lithium-ion battery system for constructing high-performance power source systems intended to make advanced environmental vehicles a practical reality. Battery performance must be predicted and designed with higher accuracy in order to achieve performance attributes suitable for such power source systems. For example, more quantitative approaches for improving battery power output are needed that are based on a thorough understanding of the fundamental processes which take place in a battery. In line with these perspectives, we constructed a simulation model of electrode reactions and charge transport processes and used it to examine the effects of different factors on battery performance.This approach is considered to be promising for the construction of a high-performance battery system for EV application. Higher battery performance can be expected from optimization of the electrode parameters. With regard to specific power in particular, the present study examined the possibility of improving battery power output during a short duration.This paper describes how the concept of short-duration power output might be derived from the electrode characteristics and discusses its potential effects on the overall battery system. It also presents the results of simulations that examined the battery system from the standpoint of thermal behavior.