Research on Dynamic Grouping Active Equalization of Series Batteries Based on Reconfigurable Circuits
[1]QIN Dongchen,ZHAO Hongfei,WU Hongxia,et al.Research on Dynamic Grouping Active Equalization of Series Batteries Based on Reconfigurable Circuits[J].Journal of Zhengzhou University (Engineering Science),2024,45(pre):2-.[doi:10. 13705 / j. issn. 1671-6833. 2024. 05. 003]
Copy
Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
45
Number of periods:
2024 pre
Page number:
2-
Column:
Public date:
2024-12-31
- Title:
- Research on Dynamic Grouping Active Equalization of Series Batteries Based on Reconfigurable Circuits
- Keywords:
- lithium-ion battery; active equalization; reconfigurable circuits; dynamic grouping; multi-cell-to-multi-cell
- CLC:
- TM912
- DOI:
- 10. 13705 / j. issn. 1671-6833. 2024. 05. 003
- Abstract:
- In order to solve the problem of inconsistent state of charge (SOC)of single cells in battery pack, the active equalization control technology is studied with series battery pack as the research object. The research content included the improvement of the balancing topology and the design of the balancing control strategy. Firstly, a new topology is proposed and verified. Secondly, the mathematical model of equalization circuit is established, and the effects of voltage difference and switching frequency on equalization performance are analyzed. According to the results of voltage difference analysis, a multi-cell-to-multi-cell balancing control strategy based on variable duty cycle is designed to improve the equalization speed and consistency of battery pack. Finally, the joint simulation of equalization topology and equalization strategy is carried out in MATLAB/Simulink. The results show that, compared with the fixed group balancing control strategy, the proposed balancing topology and control strategy can improve the balancing speed and consistency of the battery pack, the time efficiency is increased by 29.71%, the battery SOC variance is reduced by 16.13% and the number of energy transfers is reduced by 52.5%
- References:
-
[1] 陈港欣, 孙现众, 张熊, 等. 高功率锂离子电池研究进展[J]. 工程科学学报, 2022, 44(4): 612-624.
CHEN G X, SUN X Z, ZHANG X, et al. Progress of high-power lithium-ion batteries[J]. Chinese Journal of Engineering, 2022, 44(4): 612-624.
[2] LU L G, HAN X B, LI J Q, et al. A review on the key issues for lithium-ion battery management in electric vehicles[J]. Journal of Power Sources, 2013, 226: 272-288.
[3] 李节宾, 孟海军, 皮正杰, 等. 锂原电池应用现状及发展趋势[J]. 电源技术, 2018, 42(5): 725-727.
LI J B, MENG H J, PI Z J, et al. Application status and development trends of the lithium primary batteries[J]. Chinese Journal of Power Sources, 2018, 42(5): 725-727.
[4] ZENG X Q, LI M, ABD EL-HADY D, et al. Commercialization of lithium battery technologies for electric vehicles[J]. Advanced Energy Materials, 2019, 9(27): 1900161.
[5] CUI H Y, WEI Z B, HE H W, et al. Novel reconfigurable topology-enabled hierarchical equalization of lithium-ion battery for maximum capacity utilization[J]. IEEE Transactions on Industrial Electronics, 2023, 70(1): 396-406.
[6] FAN X Y, ZHANG W G, WANG Z G, et al. Simplified battery pack modeling considering inconsistency and evolution of current distribution[J]. IEEE Transactions on Intelligent Transportation Systems, 2021, 22(1): 630-639.
[7] Wu L, Pang K, Zheng Y, et al. Amulti‐module equalization system for lithium-ion battery packs[J]. International Journal of Energy Research, 2022, 46(3): 2771-2782.
[8] 刘嘉林. 电动汽车电池组被动均衡策略与SOC估算研究[D]. 昆明: 昆明理工大学, 2019. LIU J L. Research on passive equalization strategy and SOC estimation of electric vehicle battery pack[D].Kunming: Kunming University of Science and Technology, 2019.
[9] LI Y, XU J, MEI X S, et al. A unitized multiwinding transformer-based equalization method for series-connected battery strings[J]. IEEE Transactions on Power Electronics, 2019, 34(12): 11981-11989.
[10] DAOWD M, ANTOINE M, OMAR N, et al. Single switched capacitor battery balancing system enhancements[J]. Energies, 2013, 6(4): 2149-2179.
[11] SHANG Y L, CUI N X, ZHANG C H. An optimized any-cell-to-any-cell equalizer based on coupled half-bridge converters for series-connected battery strings[J]. IEEE Transactions on Power Electronics, 2019, 34(9): 8831-8841.
[12] Das U K, Shrivastava P, Tey K S, et al. Advancement of lithium-ion battery cells voltage equalization techniques: A review[J]. Renewable and Sustainable Energy Reviews, 2020,134:110227.
[13] WU X G, CUI Z H, LI X F, et al. Control strategy for active hierarchical equalization circuits of series battery packs[J]. Energies, 2019, 12(11): 2071.
[14] 郭向伟, 刘震, 耿佳豪, 等. 基于LC储能的串联电池组主动均衡方法研究[J]. 仪器仪表学报, 2020, 41(9): 242-251.
GUO X W, LIU Z, GENG J H, et al. Research on the active balancing method of series battery pack based on LC energy storage[J]. Chinese Journal of Scientific Instrument, 2020, 41(9): 242-251.
[15] Chen Y, Liu X, Shen T, et al. An any-cell(s)-to-cell(s) equalization method with a single magnetic component for lithium-ion battery pack[J]. Journal of Energy Storage, 2020, 33(9): 102071.
[16] Ji F, Liao L, Wu T, et al. Self-reconfiguration batteries with stable voltage during the full cycle without the DC-DC converter[J]. Journal of Energy Storage, 2020, 28:101213.
[17] ZHANG Y, HUANG M M, WU T Z, et al. Reconfigurable equilibrium circuit with additional power supply[J]. International Journal of Low-Carbon Technologies, 2020, 15(1): 106-111.
[18] 熊永华, 杨艳, 李浩, 等. 基于SOC的锂动力电池多层双向自均衡方法[J]. 电子学报, 2014, 42(4): 766-773.
XIONG Y H, YANG Y, LI H, et al. Multi-level Bi-directional active equalization method in lithium-ion power battery based on state-of-charge[J]. Acta Electronica Sinica, 2014, 42(4): 766-773.
[19] FAN T E, LIU S M, YANG H, et al. A fast active balancing strategy based on model predictive control for lithium-ion battery packs[J]. Energy, 2023, 279: 128028.
[20] LUO S Y, QIN D C, WU H X, et al. Multi-cell-to-multi-cell battery equalization in series battery packs based on variable duty cycle[J]. Energies, 2022, 15(9): 3263.
- Similar References:
Memo
-
Last Update:
2024-10-24