Title :
Equalization of EV and HEV batteries with a ramp converter
Author :
Gottwald, T. ; Ye, Z. ; Stuart, T.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Toledo Univ., OH, USA
Abstract :
Valve-regulated Pb-acid (VRLA) batteries used on electric vehicles (EVs) and hybrid electric vehicles (HEVs) are subject to voltage imbalances which greatly diminish battery lifetime and vehicle range. This paper describes an equalizer that is implemented with a high frequency, soft-switching power converter that corrects this imbalance. Experimental results are presented for a pack of 27 batteries.
Keywords :
DC-DC power convertors; electric vehicles; lead; secondary cells; battery equalisation; electric vehicle; hybrid electric vehicles; ramp power converter; valve-regulated Pb-acid batteries; Battery management systems; Battery powered vehicles; Circuits; DC-DC power converters; Electrodes; Equalizers; Hybrid electric vehicles; Low voltage; Monitoring; Rectifiers;
Conference_Titel :
Power Electronics in Transportation, 1996., IEEE
Print_ISBN :
0-7803-3292-X
DOI :
10.1109/PET.1996.565911
