|
For Full-Text PDF, please login, if you are a member of IEICE,
or go to Pay Per View on menu list, if you are a nonmember of IEICE.
|
Individual Cell Equalization for Series Connected Lithium-Ion Batteries
Yuang-Shung LEE Ming-Wang CHENG Shun-Ching YANG Co-Lin HSU
Publication
IEICE TRANSACTIONS on Communications
Vol.E89-B
No.9
pp.2596-2607 Publication Date: 2006/09/01 Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.9.2596 Print ISSN: 0916-8516 Type of Manuscript: PAPER Category: Energy in Electronics Communications Keyword: bi-directional converter, DCVM Cuk converter, lithium-ion battery, individual cell equalizer, ZVS,
Full Text: PDF(2.5MB)>>
Summary:
A systematic approach to the analysis and design of a bi-directional Cuk converter for the cell voltage balancing control of a series-connected lithium-ion battery string is presented in this paper. The proposed individual cell equalizers (ICE) are designed to operate at discontinuous-capacitor-voltage mode (DCVM) to achieve the zero-voltage switching (ZVS) for reducing the switching loss of the bi-directional DC/DC converters. Simulation and experimental results show that the proposed battery equalization scheme can not only enhance the bi-directional battery equalization performance, but also can reduce the switching loss during the equalization period. Two designed examples are demonstrated, the switch power losses are significantly reduced by 52.8% from the MOSFETs and the equalization efficiency can be improved by 68-86.9% using the proposed DCVM ZVS battery equalizer under the specified cell equalization process. The charged/discharged capacity of the lithium-ion battery string is increased by using the proposed ICEs equipped in the battery string.
|
|
|