Title :
Fast battery equalization with isolated bidirectional DC-DC converter for PHEV applications
Author :
Nie, Ziling ; Mi, Chris
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Michigan-Dearborn, Dearborn, MI, USA
Abstract :
Battery systems in plug-in hybrid electric vehicles (PHEV) suffer from voltage imbalance. This imbalance reduces the available capacity of certain charge/discharge cycles and shortens the battery life cycle. A new topology and smart balancing strategy for PHEV battery systems are proposed in this paper, which uses a bidirectional DC-DC converter to reduce balancing time and the number of switches needed. The simulation on a ten series connected battery cell is compared to a traditional switched capacitor equalizer.
Keywords :
DC-DC power convertors; battery powered vehicles; hybrid electric vehicles; secondary cells; PHEV applications; charge-discharge cycles; fast battery equalization; isolated bidirectional DC-DC converter; plug-in hybrid electric vehicles; smart balancing strategy; switched capacitor equalizer; ten series connected battery cell; voltage imbalance; Batteries; Capacitors; Costs; DC-DC power converters; Equalizers; Hybrid electric vehicles; Safety; Switches; Switching converters; Voltage; Plug-in Hybrid Electric Vehicles; battery balance; battery equalizer; battery management;
Conference_Titel :
Vehicle Power and Propulsion Conference, 2009. VPPC '09. IEEE
Conference_Location :
Dearborn, MI
Print_ISBN :
978-1-4244-2600-3
Electronic_ISBN :
978-1-4244-2601-0
DOI :
10.1109/VPPC.2009.5289866
