Battery Management System for Electric Vehicles

A battery management system (BMS) plays crucial role in electric vehicles. The BMS provides safe, secure and reliable battery working operations in electric vehicles. The safety and reliability of battery is authenticated by BMS, which is giving assurance of the battery health state, status of charge and cell balance parameters. Actually, the batteries are working in various atmospheric conditions at various time zones with electrochemical processes. So, battery performance is not predictable then volatility and uncertainty of electric vehicles actions may occur. The BMS evaluates the unbalanced battery conditions to establish the battery performance fulfilments. Because A Lithium-ion battery is having long life span, slow discharging time, extensive effective operation and high energy density, they will be most efficient rechargeable batteries for electric mobility. Battery management systems are used to optimize battery quality and ensure safe operation then they play an important part in the application of Electric Mobility. This work able to improve the performance of batteries for EV applications. This paper presents battery management system that comprises battery cell monitoring, state estimations, controlling of charge and discharge conditions, controlling of temperature conditions, fault diagnosis, data collecting and protective schemes.