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

Hongrui Liu (), Xiangyang Wei, Junjie Ai and Xudong Yang
Additional contact information
Hongrui Liu: Faculty of Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China
Xiangyang Wei: Faculty of Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China
Junjie Ai: Faculty of Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China
Xudong Yang: Faculty of Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China

Energies, 2024, vol. 17, issue 3, 1-15

Abstract: 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.

Keywords: equaliser; multiplexed flyback transformer; layered parallel equalisation; ithium-ion battery (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/17/3/754/pdf (application/pdf)
https://www.mdpi.com/1996-1073/17/3/754/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:17:y:2024:i:3:p:754-:d:1333750

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().