Next-Generation Battery Management Systems: Dynamic Reconfiguration

Han, Weiji; Wik, Torsten; Kersten, Anton; Dong, Guangzhong; Zou, Changfu

doi:10.1109/mie.2020.3002486

Cited by 94 publications

(38 citation statements)

References 49 publications

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“…cells/modules/packs to activate or terminate their electrical connections. Depending on the number of switches around each battery and the battery-switch connection pattern, various RBS designs have been proposed recently and they were reviewed in [1], [8], and [9]. In all these RBS designs, batteries are locally connected in either series or parallel.…”

Section: A Circuit Design For Flexible Series and Parallel Connectionsmentioning

confidence: 99%

“…As compared to the research and industrial efforts devoted to developing various high-performance batteries within a fixed configuration, far less attention has been paid to investigating the influence of dynamic system configurations. However, it has been revealed that appropriately manipulating the system configuration can bring about a number of potential benefits [1], in terms of, e.g., enhanced fault tolerance [2], improved charge balance [3], [4], extended energy delivery [5], programmable terminal voltages [6], as well as hybrid use of batteries of different ages, types, and even chemistries [7]. In view of this, reconfigurable battery systems (RBSs) have been recognized as a promising direction to advanced battery management and control [1].…”

Section: Introductionmentioning

confidence: 99%

“…As a result, unlike a conventional battery system of a fixed configuration, an RBS can operate in different interconvertible connection structures by controlling the states of switches. Various RBS topology designs and hardware implementations have been extensively reviewed in [1], [8], [9]. For instance, as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, as shown in Fig. 2 and Table 1 in [1], a total of 11 emerging RBS topology designs have been compared and analyzed. These RBSs were designed for enhanced fault tolerance, customized terminal voltage range, charge and temperature balance, extended energy delivery, hybrid application of heterogeneous batteries, etc.…”

Section: Introductionmentioning

confidence: 99%

“…These RBSs were designed for enhanced fault tolerance, customized terminal voltage range, charge and temperature balance, extended energy delivery, hybrid application of heterogeneous batteries, etc. To pursue these benefits, RBS management principles as well as control and optimization algorithms have been comprehensively discussed in [1]. On the other hand, to date, several challenges still need to be addressed in the RBS hardware design, system modeling, algorithm development, switch operations, scalability, etc.…”

Section: Introductionmentioning

confidence: 99%

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Analysis and Estimation of the Maximum Switch Current During Battery System Reconfiguration

Han

Kersten

Zou

et al. 2022

IEEE Trans. Ind. Electron.

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Batteries are interconnected in series and/or parallel to meet wide-range power or energy demands in various industrial applications. To pursue the benefits of multiple connection structures in one system, reconfigurable battery systems (RBSs) have recently emerged for safe and efficient operation, extended energy storage and delivery, etc. Switches are the essential elements to enable the battery system reconfiguration, but selecting appropriate switches for RBS designs has not been systematically investigated. To bridge this gap, analytical expressions are derived in this paper to estimate the maximum switch current and its upper limit to facilitate the selection of RBS switches. An RBS prototype based on H-bridges is set up and experimental results verify the effectiveness and advantage of the proposed estimation method. These analytical expressions, relying only on resistances of batteries and switches, are readily applicable to practical RBS design and much more efficient than conducting numerous circuit experiments, simulation tests, or circuit analyses, especially for large-scale systems. Moreover, the analysis framework and estimation method proposed for seriesparallel mutual conversion can be adaptively extended to other complex system reconfigurations to facilitate various RBS designs.

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Section: A Circuit Design For Flexible Series and Parallel Connectionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis and Estimation of the Maximum Switch Current During Battery System Reconfiguration

Han

Kersten

Zou

et al. 2022

IEEE Trans. Ind. Electron.

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Investigating the possibility of using second‐life batteries for grid applications

et al. 2022

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This paper investigates the potential for use of batteries from retired plug-in hybrid electric vehicles (PHEVs) in specific grid applications. In this study, project, a reference capacity test was performed to check the state of health, state of charge (SOC) and battery durability of a PHEV battery, and the pack was then tested under duty cycles for different grid applications to determine whether it would satisfy such applications in technical terms. The duty cycles considered are peak shaving, frequency regulation, photovoltaic (PV) smoothing and renewable energy firming. The data show that the battery can satisfactorily fulfil the requirements of peak shaving applications in terms of stability and battery retention capacity, and that the requirements of the frequency regulation service are also partially met. The untracked time for the battery signal was 4% (slightly exceeding the condition set for passing the tracking test, which is 2%). The SOC and temperature were within permitted limits. The battery, however, did not achieve good performance for PV smoothing or renewable energy (RE) firming. The untracked times were 14% and 11% for PV smoothing and RE firming, respectively (greatly exceeding the 2% condition for passing the tracking test). The SOC and temperature for the PV smoothing were within acceptable limits. The pack failed to complete the RE firming cycle as the SOC reached maximum safety limits after 6 h and 23 min, whereas the duty cycle is 10 h long.

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A Novel Self‐Reconfigurable Battery Pack Design with and without Active Cell Balancing

Bajaj,

Li,

Xiong

et al. 2024

Energy Tech

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In electric vehicle industry, rechargeable multicell battery packs commonly with fixed configurations are adopted. Such fixed battery configurations have several drawbacks, including limited fault tolerance during unusual operating situations, poor cell state variation management, etc. Thus, this article proposes a self‐reconfigurable battery pack design considering two scenarios: with and without active cell balancing. Herein, the issue of cell state variation is mostly solved by the proposed configuration mode, and further monitoring, control, and protection can be easily appended to accomplish other functionalities, for example, meeting dynamic voltage requirement. Each proposed design is validated by simulation results for a six‐cell polymer lithium‐ion battery pack. The proposed design can maximally utilize the battery's capacity and help to protect cells from over‐charging and over‐discharging as well. This research could be further extended to other application scenarios involving wide‐range dynamic voltage requirements.

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Next-Generation Battery Management Systems: Dynamic Reconfiguration

Cited by 94 publications

References 49 publications

Analysis and Estimation of the Maximum Switch Current During Battery System Reconfiguration

Analysis and Estimation of the Maximum Switch Current During Battery System Reconfiguration

Investigating the possibility of using second‐life batteries for grid applications

A Novel Self‐Reconfigurable Battery Pack Design with and without Active Cell Balancing

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