Title :
Charge equalization of battery power modules in series
Author :
Hong, Wei ; Ng, Kong-Soon ; Hu, Jin-Hsin ; Moo, Chin-Sien
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
Abstract :
Battery power modules (BPMs) with associated power converters are connected in series to comply with a high load voltage. With bidirectional power converters, BPMs can perform buck conversion for the charging operation. The continuous conduction mode (CCM) and the discontinuous conduction mode (DCM) of buck converters in series are analyzed. According to the analyzed results, an equalization strategy is proposed to solve the charge imbalance problem by scheduling the individual battery current. Experiments are carried out to demonstrate the effectiveness of the balance charging method.
Keywords :
power convertors; secondary cells; associated power converters; balance charging method; battery power modules; bidirectional power converters; buck converters; charge equalization; charge imbalance problem; continuous conduction mode; discontinuous conduction mode; Batteries; Capacitors; Circuits; Filters; Hybrid electric vehicles; Hybrid power systems; MOSFETs; Multichip modules; Power electronics; Voltage; Battery; Battery power module (BPM); Bidirectional converter; Charge equalization;
Conference_Titel :
Power Electronics Conference (IPEC), 2010 International
Conference_Location :
Sapporo
Print_ISBN :
978-1-4244-5394-8
DOI :
10.1109/IPEC.2010.5544565
