A Comprehensive Review of Battery and Supercapacitor Cells Voltage-Equalizer Circuits

Izadi, Yasin; Beiranvand, Reza

doi:10.1109/tpel.2023.3310574

Cited by 9 publications

(1 citation statement)

References 184 publications

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“…There are two main types of equalisation methods: passive equalisation and active equalisation [4,5]. The passive consumes the excess energy through a parallel resistor.…”

Section: Introductionmentioning

confidence: 99%

A Layered Parallel Equaliser Based on Flyback Transformer Multiplexed for Lithium-Ion Battery System

Liu,

Wei,

et al. 2024

Energies

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An effective equaliser is crucial for eliminating inconsistencies in the connected serial batteries and extending the life of the battery system. The current equalisers generally have the problems of low equalisation efficiency, slow equalisation speed, and complex switching control. A layered parallel equaliser based on a flyback transformer multiplexed for a lithium-ion battery system is proposed. The equaliser employs both hierarchical and parallel equalisation techniques, allowing for simultaneous processing of multiple objectives. This enhances both the efficiency and speed of the equalisation process. The efficiency of equalisation can be further improved by implementing PWM control with deadband complement. Additionally, the flyback transformer serves as an energy storage component for both layers of the equalisation module, resulting in a significant reduction in the size and cost of the equaliser. The circuit topology of the equaliser is presented, and its operational principle, switching control, and equalisation control strategy are analysed in detail. Finally, an experimental platform consisting of six lithium-ion batteries is constructed, and equalisation experiments are conducted to verify the advantages of the proposed equaliser in terms of equalisation speed, efficiency, and cost.

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“…There are two main types of equalisation methods: passive equalisation and active equalisation [4,5]. The passive consumes the excess energy through a parallel resistor.…”

Section: Introductionmentioning

confidence: 99%

A Layered Parallel Equaliser Based on Flyback Transformer Multiplexed for Lithium-Ion Battery System

Liu,

Wei,

et al. 2024

Energies

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Integrated modular equalization circuit for energy storage system

Yang,

Ding,

Cao

et al. 2024

Circuit Theory & Apps

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SummaryThis paper proposes an integrated modular equalization circuit for energy storage systems. This integration is achieved by reusing the half‐bridge circuit into the cell‐level equalization circuit and the module‐level equalization circuit, thereby simplifying the system. The proposed equalization circuit has a good equalization effect and balancing speed. In addition, all high‐frequency switches in the equalization circuit can achieve zero voltage switching (ZVS), and the equalization circuit has high efficiency. This paper provides a detailed analysis of the equalization circuit. Mathematical models for cell‐level and module‐level equalization circuits have been derived for optimal design and control of the equalization circuit. The experimental results have good consistency with the analytical results.

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