Double-Layer SOC and SOH Equalization Scheme for LiFePO 4 Battery Energy Storage System Using MAS Blackboard System

Zhongda Lu, Qilong Wang, Fengxia Xu, Mingqing Fan (), Chuanshui Peng and Shiwei Yan
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Zhongda Lu: School of Mechanical and Electrical Engineering, Qiqihar University, Qiqihar 161000, China
Qilong Wang: School of Mechanical and Electrical Engineering, Qiqihar University, Qiqihar 161000, China
Fengxia Xu: School of Mechanical and Electrical Engineering, Qiqihar University, Qiqihar 161000, China
Mingqing Fan: School of Mechanical and Electrical Engineering, Qiqihar University, Qiqihar 161000, China
Chuanshui Peng: Qiqihar Sida Railway Equipment Co., Ltd., Qiqihar 161006, China
Shiwei Yan: Qiqihar Sida Railway Equipment Co., Ltd., Qiqihar 161006, China

Energies, 2023, vol. 16, issue 14, 1-14

Abstract: 26650 LiFePO 4 battery, as an ideal energy storage battery for the smart grid system, has the shortcomings of fast aging speed and large dispersion of aging trend, which is the reason for accelerating the 26650 battery system aging. However, it is noted that the 26650 LiFePO 4 battery with high aging trend dispersion shows the characteristics of grouping. Therefore, to prolong the 26650 battery system life, this paper proposes a state-of-charge (SOC) and state-of-health (SOH) double-layer equalization scheme for 26650 LiFePO 4 batteries based on a multi-agent blackboard system (MABS) that utilizes these characteristics. Based on MABS, the battery units with similar SOH are clustered into a group by a hierarchical-clustering algorithm. Then, SOH balancing is performed by changing the depth of charge and discharge (DOD) between groups, and SOC balancing is performed within the group. MATLAB simulation results verify the effectiveness of the proposed scheme in ensuring the balance of battery charge and discharge and prolonging the life of the battery energy storage system (BESS).

Keywords: LiFePO 4 battery energy storage system; multi-agent blackboard system; double-layer equalization scheme; state-of-charge (SOC) balancing; state-of-health (SOH) balancing; hierarchical-clustering algorithm (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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