Charge equalization for an electric vehicle battery system

Author

Kutkut, Nasser H. ; Wiegman, H.L.N. ; Divan, Deepak M. ; Novotny, D.W.

Author_Institution

Soft Switching Technol., Middleton, WI, USA

Volume

34

Issue

1

fYear

1998

fDate

1/1/1998 12:00:00 AM

Firstpage

235

Lastpage

246

Abstract

Charge equalization for series connected battery strings has important ramifications on battery life. It enhances the uniformity of the battery cells and hence improves the life of the battery as a whole. A new charge equalization technique for a series string of battery cells has been recently proposed by the authors. The basic technique utilizes a simple isolated dc-to-dc converter with a capacitive output filter along with a multiwinding transformer. The possibility of integrating the trickle charge function with the charge equalization function is potentially very attractive, as it can lead to an efficient and low cost implementation

Keywords

battery chargers; economics; electric vehicles; equivalent circuits; power transformers; secondary cells; Pb; battery cells; battery life; capacitive filter; capacitive output filter; charge equalization; converter topologies; dc-to-dc converter; electric vehicle battery; equivalent circuit; lead acid battery; low cost implementation; multiwinding transformer; series connected battery strings; trickle charge function; uniformity; Automotive engineering; Batteries; Cost function; Electric vehicles; Electrochemical processes; Electrodes; Filters; Lead; Power engineering computing; Voltage;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.640281

Filename

640281