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

fYear

2009

fDate

7-10 Sept. 2009

Firstpage

78

Lastpage

81

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/VPPC.2009.5289866

Filename

5289866