SOC-Based Bi-Directional Active Equalization Control for Lithium-Ion Power Battery

Authors

Shaojian Song, School of Electrical Engineering, Guangxi University, Nanning 530004, China;
Zhihao Wang, School of Electrical Engineering, Guangxi University, Nanning 530004, China;
Xiaofeng Lin, School of Electrical Engineering, Guangxi University, Nanning 530004, China;

Abstract

Abstract: The inconsistency of cell in the electric vehicles' lithium-ion power battery pack leads to decrease the battery pack's capacity and lifetime, and even seriously affect the electric vehicles' performance. An active equalization system was designed based on the bi-directional Buck-Boost topology. A novel active equalization control strategy was proposed to balance the lithium-ion battery pack in the process of charging and static state, which extreme learning machine (ELM) was used to predict the state of charge(SOC), and SOC was employed as the main balance criterion. The simulation results show that the proposed bi-directional active equalization method can realize the equalization target accurately and efficiently with less energy loss.

Recommended Citation

Song, Shaojian; Wang, Zhihao; and Lin, Xiaofeng (2020) "SOC-Based Bi-Directional Active Equalization Control for Lithium-Ion Power Battery," Journal of System Simulation: Vol. 29: Iss. 3, Article 19.
DOI: 10.16182/j.issn1004731x.joss.201703019
Available at: https://dc-china-simulation.researchcommons.org/journal/vol29/iss3/19

First Page

609

Revised Date

2015-09-03

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.201703019

Last Page

617

CLC

TM912

Recommended Citation

Song Shaojian, Wang Zhihao, Lin Xiaofeng. SOC-Based Bi-Directional Active Equalization Control for Lithium-Ion Power Battery[J]. Journal of System Simulation, 2017, 29(3): 609-617.

DOI

10.16182/j.issn1004731x.joss.201703019