According to , equalization methods can be grouped into three main different categories: first, Battery Selection, which makes up the battery pack by selecting the cells with the same properties.Second, Passive Equalization, in which no active control is utilized to equalize cannot be used for lithium-based batteries as there is a high risk of explosion.
This paper is the second part of the series proposes on-line equalization algorithms for lithium-ion battery packs in EVs based on CCVCs. In the first part, we propose a suitable RCCE algorithm for on-line equalization in EVs which guarantees no over-equalization. It fits packs with different pack consistency and therefore is applicable for
On-line equalization for lithium-ion battery packs based on charging cell voltages: Part 1. Equalization based on remaining charging capacity estimation J Power Sources, 247 ( 2014 ), pp. 676 - 686
In this series of two papers, we discover that DCE is a feasible and appropriate on-line equalization topology for battery packs in EVs. We therefore propose two effective on-line equalization al- gorithms aiming at maximumpack capacity for lithium-ion battery packs based on charging cell voltage curves (CCVCs).
Lithium-ion batteries, being a cornerstone of contemporary energy storage, are extensively utilized in electric vehicles, portable gadgets, energy storage setups, and numerous other domains [].However, with the expansion of its application scope and the increase of complexity, the inconsistency problem of lithium-ion batteries has gradually become prominent,
A multi-module equalization system for lithium-ion battery packs. Luping Wu, Luping Wu. College of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai, China. Therefore, battery
Battery equalization is a crucial technology for lithium-ion batteries, and a simple and reliable voltage-equalization control strategy is widely used because the battery terminal voltage is very
On-line equalization for lithium-ion battery packs based on charging cell voltages: Part 2. Fuzzy logic equalization. J Power Sources (2014) Y. Wang et al. A novel active equalization method for lithium-ion batteries in electric vehicles. Appl Energy (2015) S. Zhang et al.
On-line equalization for lithium-ion battery packs based on charging cell voltages: Part 1. Equalization based on remaining charging capacity estimation. J Power Sources 2014;247:676–86. Lu LG, Han XB, Li JQ, Hua JF, Ouyang MG. A review on the key issues for lithiumion battery management in electric vehicles. J Power Sources 2013;226:272
Haiyan Yao, Aung Thinzar, Lithium-ion battery equalization circuit and control strategy for photovoltaic energy storage applications, International Journal of Low-Carbon
As shown in Figure 11(a), the figure identifies 1 is the drive power module, mainly used for charging each battery in the battery pack; 2 for the electronic load module, model N3305A0 DC electronic load on lithium batteries for constant current discharge operation, input current range of 0–60 A, voltage range of 0–150 V, measurement accuracy of 0.02%; 3 for the
In this series of two papers, we discover that DCE is a feasible and appropriate on-line equalization topology for battery packs in EVs. We therefore propose two effective on
To enhance the consistency of the lithium battery pack while considering equalization efficiency and speed, this study adopts the cascaded Cuk equalization topology,
The difference of inconsistency for lithium-ion battery pack equalization is determined based on the uniform charging cell voltage curves hypothesis. Stability of the
On-line equalization for lithium-ion battery packs based on charging cell voltages: part 2. fuzzy logic equalization. J Power Sources, 247 (2014), pp. 460-466. View PDF View article View in Scopus Google Scholar X. Li, Z. Wang, L. Zhang. Co-estimation of capacity and state-of-charge for lithium-ion batteries in electric vehicles.
The purpose of battery capacity-based equalization is to control the maximum usable capacity of the battery group to converge, and the battery capacity can intuitively reflect
Request PDF | On Feb 1, 2014, Yuejiu Zheng and others published On-line equalization for lithium-ion battery packs based on charging cell voltages: Part 1. Equalization based on remaining charging
Battery inconsistency in electric vehicles is an important factor causing battery capacity degradation and safety problems. Therefore, battery equalization technology plays an important role in improving the performance and safety of battery packs. Among the existing equalization technologies, passive equalization is inefficient and active equalization is
Active Equalization of Lithium-Ion Battery Based on Reconfigurable Topology. January 2023; Applied Sciences 13(2):1154; Control strategy of conventional method (shaded area, dotted line
On-line equalization for lithium-ion battery packs based on charging cell voltages: part 2. fuzzy logic equalization. J. Power Sources, 247 (2014), pp. 460-466. View PDF View article View in Scopus Google Scholar T.A. Stuart, W. Zhu. Modularized battery management for large lithium ion cells.
The equalization technique is a key technique in the secondary utilization of retired batteries. In this paper, a double-layer equalization method is proposed, which combines the reconfigurable topology with the converter active equalization method. The inner layer uses the reconfigurable topology to have a balanced set of battery cells. Thanks to isolating the
Battery balancing is the key issue as well as where the difficulty lies to the BMS. The main idea of battery balancing is to use the power electronic converter to transfer or consume the energy of the battery to achieve the purpose of balance. Generally,
Research on Equalization Technology of Lithium Battery Based on Adaptive Fuzzy Control in Variable Theory Domain. In: Yang, Q., Li, J. (eds) The Proceedings of the 11th Frontier Academic Forum of Electrical Engineering (FAFEE2024). FAFEE 2024. Lithium batteries are known for their high energy density, extended lifespan, fast charging
This paper reviews battery equalization systems and various active equalization circuits and summarizes the working principle and research progress of each active equalization circuit. Then, various active equalization
Dissipative equalization is a feasible on-line equalization method in the battery management system (BMS). However, equalization strategies based on remaining charging capacity (RCC) consistency largely ignore the
On-line equalization for lithium-ion battery packs based on charging cell voltages: part 1. Equalization based on remaining charging capacity estimation. J. Power Sources (Feb. 2014) X Cui et al. Novel active LiFePO4 battery balancing method based on chargeable and dischargeable capacity. Comput. Chem. Eng.
Dissipative equalization is a feasible on‐line equalization method in the battery management system (BMS). However, equalization strategies based on remaining charging capacity (RCC) consistency largely ignore the broader stability and scalability issues that may arise in practical BMS applications, and no explicit methods have been proposed to address these problems.
On-line equalization for lithium-ion battery packs based on charging cell voltages: Part 1. Equalization based on remaining charging capacity estimation. J. Power Sources, 247 (2014), pp. 676-686. View PDF View article View in
Because of the inevitable inconsistency during manufacture and use of battery cells, cell variations in battery packs have significant impacts on battery pack capacities, durability and safety for electric vehicles (EVs) To reduce cell variations and increase pack capacity, cell equalization is essentially required In the series of two papers, we discover that dissipative cell
Many lithium-ion battery cells are usually connected in series to meet the voltage requirements. The voltages of the entire series-connected battery cells in a battery pack should be equal. reviewed active methods of battery equalization. However, they considered a significant number of ancient equalization techniques and ignored a
Semantic Scholar extracted view of "On-line equalization for lithium-ion battery packs based on charging cell voltages: Part 1. Equalization based on remaining charging capacity estimation" by Yuejiu Zheng et al.
Even with the same voltage level, different types of battery packs have different requirements for the volume of the battery equalization circuit. However, most equalization circuits have the same problem: the
DOI: 10.1016/J.JPOWSOUR.2013.09.012 Corpus ID: 95558093; On-line equalization for lithium-ion battery packs based on charging cell voltages: Part 2. Fuzzy logic equalization @article{Zheng2014OnlineEF, title={On-line equalization for lithium-ion battery packs based on charging cell voltages: Part 2.
In order to equalize the battery in the whole State of Charge range and reduce the influence of inaccurate equalization caused by a single equalization variable, according to the
In this paper, the battery pack means the whole battery system, a battery group is a group of n battery cells, and the working part of a battery group consists n or n − 1 battery cells depending on the phase of equalization.
Moreover, the values of the equalization current of the equalization methods were similar, but the effect of hybrid equalization on reducing the differences among batteries was more significant. The average hybrid equalization current was 0.073 A larger than the average active equalization current.
In this paper, the causes and effects of the inconsistencies of lithium-ion batteries are analyzed in detail, and then the existing equalization strategies and technologies
The equalization methods of lithium-ion batteries can be divided into active methods and passive methods. Passive methods use resistors connected in parallel with the batteries to dissipate excess electricity to balance the battery pack [ 13 ].
Solar photovoltaic (PV) is considered a very promising technology, and PV-lithium-ion battery energy storage is widely used to obtain smoother power output. In this paper, we propose a battery equalization circuit and control strategy to improve the performance of lithium-ion batteries.
To better quantify the equalization effect, the battery difference and energy utilization rate are defined for evaluation. In order to address the inconsistency problem of series-connected lithium-ion battery groups in practice, a two-level balanced topology based on bidirectional Sepic-Zeta circuit is designed in this article.
The purpose of battery capacity-based equalization is to control the maximum usable capacity of the battery group to converge, and the battery capacity can intuitively reflect the inconsistency of the battery group.
When the imbalance degrees of the groups are the same, which means the groups have the same amount of electricity to balance, the higher the output power is, the faster the battery group accomplishes its equalization. The equalization process of the battery pack is shown in Figure 15.
The equalization strategy is embedded in a real BMS for practical application analysis. Lithium-ion battery pack capacity directly determines the driving range and dynamic ability of electric vehicles (EVs). However, inconsistency issues occur and decrease the pack capacity due to internal and external reasons.
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