A Study on Active Balancing Methods by Battery Stack Power Recovery

다국어 초록 (Multilingual Abstract)

Recently, the demand for energy storage has increased, serial cell configurations are commonly used for high-capacity secondary batteries. Initially, when identical cells are configured in series, the battery cells operate without voltage differences. However, over time, voltage imbalances occur due to differences in the environmental and physical properties of the cells. In addition, the unique characteristics of cells change during charging and discharging, which greatly affects to the degradation of battery efficiency and performance. Various cell balancing techniques have been proposed to achieve high efficiency and performance in battery. This paper proposes a minimum voltage selective balancing topology based on a flyback converter for module balancing of batteries based on active cell balancing techniques. In the proposed topology, the output voltage of each battery is shared through a single transformer, the energy from the converter's primary side is transferred to the battery modules with the minimum voltage. The proposed module balancing circuit can be easily applied to the battery reuse industry. The proposed minimum voltage battery module selective balancing topology was verified through PSIM simulations and experiments.

참고문헌 (Reference)

1 Gabbar HA, "Review of Battery Management Systems (BMS)Development and Industrial Standards" 9 (9): 28-, 2021

2 Z. B. Omariba, "Review of Battery Cell Balancing Methodologies for Optimizing Battery Pack Performance in Electric Vehicles" 7 : 129335-129352, 2019

3 김호용 ; 왕이페이 ; 박성미 ; 박성준 ; 손경종, "Prediction Method of End of Charge Voltage using Battery Parameter Measurement" 25 (25): 387-396, 2022

4 김종철 ; 김춘성 ; 박용운 ; 박성미 ; 박성준, "MG Operation Technique based on DC-Grid Stability using ESS" 26 (26): 1269-1278, 2023

5 M. Naguib, "Lithium-Ion Battery Pack Robust State of Charge Estimation, Cell Inconsistency, and Balancing : Review" 9 : 50570-50582, 2021

6 M. -Y. Kim, "Center-Cell Concentration Structure of a Cell-to-Cell Balancing Circuit With a Reduced Number of Switches" 29 (29): 5285-5297, 2014

7 M. T. Lawderet, "Battery Energy Storage System(BESS)and Battery Management System(BMS)for Grid-Scale Applications" 102 (102): 1014-1030, 2014

8 S. Koraddi, "Analysis of Different Cell Balancing Techniques" 1-4, 2022

9 S. Jeon, "Active cell balancing circuit for series-connected battery cells" 1182-1187, 2015

10 K. -M. Lee, "Active Cell Balancing of Li-Ion Batteries UsingLCSeries Resonant Circuit" 62 (62): 5491-5501, 2015

11 박성준 ; 송광석 ; 박성미, "A Study on the Parameters Estimation for SOC and SOH of the Battery" 23 (23): 853-863, 2020

12 L. Liuet, "A Low-Cost Multiwinding Transformer Balancing Topology for Retired Series-Connected Battery String" 36 (36): 4931-4936, 2021