An Optimal Strategy of Balancing for LiFePO4 Battery in Battery Energy Storage System

DOI

10.2991/icsem.2013.68How to use a DOI?

Keywords

Balancing Strategy, Imbalance Analysis, LiFePO4 Battery, Battery Energy Storage System (BESS).

Abstract

Cell imbalance is one of the key factors that limit the capacity and power of battery energy storage systems (BESS), especially the large lithium-ion battery packs. To deal with the unbalancing problem, an effective balancing circuit is required, so is an optimal balancing strategy. In this paper, an optimal strategy for cells balancing has been presented. Contrary to the conventional balancing algorithms which base on instantaneous voltage or state-of-charge (SOC) no matter what the cause of imbalance is, the proposed strategy is targeted to different imbalance situations. Four cases of cell imbalance have been analyzed and the balancing effects of different algorithms are discussed. The simulation results show that the proposed strategy improves the performances of battery packs, including the usable capacity and maximum power.

Copyright

© 2013, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Bo Li
AU  - Daiming Yang
AU  - Jianzheng Liu
AU  - Man Chen
AU  - Zhigang Lu
PY  - 2013/04
DA  - 2013/04
TI  - An Optimal Strategy of Balancing for LiFePO4 Battery in Battery Energy Storage System
BT  - Proceedings of the 2nd International Conference On Systems Engineering and Modeling (ICSEM 2013)
PB  - Atlantis Press
SP  - 363
EP  - 370
SN  - 1951-6851
UR  - https://doi.org/10.2991/icsem.2013.68
DO  - 10.2991/icsem.2013.68
ID  - Li2013/04
ER  -