A new architecture for battery charge equalization

Dong, Bo; Han, Yehui

doi:10.1109/ecce.2011.6063871

Cited by 14 publications

(4 citation statements)

References 19 publications

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“…Research on LIBs' equalization management is crucial to minimizing performance differences amongst the battery pack's cells [57]. Approaches for equalization can be founded on voltage [58], SoC [59], ability [60], or a mix of these [61][62][63]. The goal of voltage-based approaches is to guarantee that, within a particular range, the voltage remains constant across all of the individual cells.…”

Section: Equalization Managementmentioning

confidence: 99%

Sustainability and Prolonging Rechargeable Battery Life: A Sensor Device Review

Sahu

Tiwari

2023

J. Electron. Electric. Eng.

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Rechargeable batteries have recently experienced increases in productivity and the economy, solidifying their dominance in energy-intensive cultures. Regular performance monitoring is required to lessen the adverse environmental effects of batteries in the face of increased demand. The distinctive features of lithium-ion batteries (LIBs) make them an ideal choice for energy storage. Battery management systems (BMSs) are needed to make sure that LIB systems are safe and operate effectively. Critical problems in the existing structure and operation of BMSs are their limited data storage capacity and weak computational power. This paper studies the idea and architecture of cloud-based smart BMSs and offers some viewpoints on their performance, usability, and advantages for upcoming battery applications. While some of the benefits of sensors have been recognized for more than a hundred years, the combination of diverse sensing technologies with novel battery platforms has the potential to revolutionize the sector by changing how both new and old lithium-ion devices are used. This paper also highlights current advances and their associated benefits focusing on electrochemical, mechanical, acoustic, and optical sensors that can potentially boost battery sustainability and longevity.

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Section: Equalization Managementmentioning

confidence: 99%

Sustainability and Prolonging Rechargeable Battery Life: A Sensor Device Review

Sahu

Tiwari

2023

J. Electron. Electric. Eng.

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“…However, this structure may be inefficient and have long equalization time under certain initial battery charge combinations. To improve the equalization process, a layer-based battery equalization structure is developed in [17]. The block-diagram of such equalization system is given in Figure 2.…”

Section: Layer-based Equalization Structurementioning

confidence: 99%

“…The proposed equalizer is tested using both computer simulations and physical experiment of a 5-cell prototype system. In paper [17], a layer-based battery equalization system is developed. The efficacy of the structure is compared with the traditional series-based equalization structure, where all equalizers are connected in a series manner, using MATLAB simulations and physical circuit experiments of a 4-battery system.…”

Section: Introductionmentioning

confidence: 99%

System-Theoretic Analysis of a Class of Battery Equalization Systems: Mathematical Modeling and Performance Evaluation

Chen

Zhang

Han

2015

IEEE Trans. Veh. Technol.

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Battery equalizers are widely used in multi-battery systems to maintain balanced charge among individual battery cells. While the research on the hardware realization of battery equalizers has received significant attention, rigorous analysis of battery equalization process at the system level remains largely unexplored. In this paper, we study three types of battery equalization system structures: series-based, layer-based, and module-based. Specifically, we derive mathematical models that describe the system-level behavior of the battery equalization processes under these equalization structures. Then, based on the mathematical models, analytical methods are developed to evaluate the performance of the equalization processes. In addition, we carry out statistical analysis to compare the performance of the three equalization structures considered.

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“…Traditional equalization methods take voltage as a balancing criterion, but charge differences exist among cells with the same voltage because of over potential [17], [18]. Some researchers focused on the SoC equalization method [19], [20]. These researchers aimed to minimize the differences between the mean SoC of a pack and a specific battery by balancing.…”

Section: Introductionmentioning

confidence: 99%

Development of an Optimized Algorithm for Bidirectional Equalization in Lithium-Ion Batteries

Sun¹,

Zhu²,

Lu³

et al. 2015

Journal of Power Electronics

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Many equalization circuits have been proposed to improve pack performance and reduce imbalance. Although bidirectional equalization topologies are promising in these methods, pre-equalization global equalization strategy is lacking. This study proposes a novel state-of-charge (SoC) equalization algorithm for bidirectional equalizer based on particle swarm optimization (PSO), which is employed to find optimal equalization time and steps. The working principle of bidirectional equalization topologies is analyzed, and the reason behind the application of SoC as a balancing criterion is explained. To verify the performance of the proposed algorithm, a pack with 12 LiFePO4 batteries is applied in the experiment. Results show that the maximum SoC gap is within 2% after equalization, and the available pack capacity is enhanced by 13.2%. Furthermore, a comparison between previously used methods and the proposed PSO equalization algorithm is presented. Experimental tests are performed, and results show that the proposed PSO equalization algorithm requires fewer steps and is superior to traditional methods in terms of equalization time, energy loss, and balancing performance.

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A new architecture for battery charge equalization

Cited by 14 publications

References 19 publications

Sustainability and Prolonging Rechargeable Battery Life: A Sensor Device Review

Sustainability and Prolonging Rechargeable Battery Life: A Sensor Device Review

System-Theoretic Analysis of a Class of Battery Equalization Systems: Mathematical Modeling and Performance Evaluation

Development of an Optimized Algorithm for Bidirectional Equalization in Lithium-Ion Batteries

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