• analog
• battery
• digital
• environments
• Li-ion
• model
• simulation

This thesis deals with the development of an equivalent model of a Li-ion battery to be used in multi-domain simulations, aimed at the design and at the optimization of battery management systems and battery chargers. A complete modelling process is realized for a portable electronic device Li-ion battery. To account for the battery behaviour in multi-domain simulations, three different versions of the battery model are implemented in different simulation environments. The first model is realized in a high-level environment such as Matlab/Simulink. The second model is implemented as an analog electrical circuit in the Cadence Virtuoso environment. The third model is a digital/mixed-signal model and it is implemented using SystemVerilog language; its simulations are performed in the Cadence Incisive environment. After the battery model implementation, a validation is performed on the three battery models in order to verify the correctness of their behaviour by comparing the simulations to the measures. A root mean square error less than 0.3 % and a 0.8 % maximum error on the voltage show that the implemented models are able to predict the battery behaviour accurately, in all the three different simulation environments.