The Concept of Li-Ion Battery Control Strategies to Improve Reliability in Electric Vehicle (EV) Applications

Abstract

The nonlinear features of lithium-ion batteries make the lifetime performance, reliability assessment, and control of the battery more difficult. The battery management system (BMS) has been known as a key system for monitoring, controlling, and improving the lifespan and reliability of the Li-ion battery from the cell to pack levels in electric vehicles (EVs). To improve the abovementioned issue, the BMS should control and monitor the current, voltage, and temperature of the battery system during the lifespan of the battery. In this chapter, the BMS definition, SoH and SoC methods, and battery fault detection methods have been described as key aspects of the control strategy of Li-ion batteries for improving the reliability of the system. Moreover, the challenges and further work relating to the estimation of the state of function of the Li-ion batteries for EV applications have been investigated.