The Influence of BMSs on the Characterization and Modeling of Series and Parallel Li-Ion Packs

This work analyzes the effects of a BMS (battery management system) on the characterization and modeling of series and parallel connections of Li-ion cell packs. The Li-ion pack studied consists of four series modules connected in parallel. This pack has been characterized by means of charge, discharge and frequency tests. As a result of these tests, series and parallel influence on battery parameters have been determined. A model considering the effects of a BMS is established and compared with a model based on a single-cell approach. Experimental validations show that the single cell based approach gives poor results in comparison with a model that considers BMS effects.

li-ion pack; battery management system (bms) effect; modeling; testing; hardware-in-the-loop (hil) simulation;energy-storage systems; automotive applications; charge estimation; fuel-cell; battery; circuit; state

The Influence of BMSs on the Characterization and Modeling of Series and Parallel Li-Ion Packs Articles