Design of an active battery management system for electric vehicles

Conference: PCIM Europe 2014 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/20/2014 - 05/22/2014 at Nürnberg, Deutschland

Proceedings: PCIM Europe 2014

Pages: 8Language: englishTyp: PDF

Personal VDE Members are entitled to a 10% discount on this title

Szalai, Thomas; Schwalbe, Ulf; Schilling, Marco; Endert, Fabian; Heidrich, Tobias; Ivanov, Svetlozar-Dimitrov (TU Ilmenau, Germany)

State of the art battery modules for traction drives contain battery management systems (BMS) with passive balancing units to ensure an equal state of charge (SOC) for all cells after charging. This paper will examine the requirements for employing active balancing units in traction batteries to maximize the use and lifetime of the whole battery pack under real driving conditions. After the power requirements are calculated a comparison between available active balancing methods determines which method is suitable. Finally, simulation results and experimental data from the prototype balancing unit are given.