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Automotive battery equalizers based on joint switched-capacitor and Buck-Boost converters
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Liu, Kailong, Yang, Zhile, Tang, Xiaopeng and Cao, Wenping (2020) Automotive battery equalizers based on joint switched-capacitor and Buck-Boost converters. IEEE Transactions on Vehicular Technology, 69 (11). 12716 -12724. doi:10.1109/TVT.2020.3019347 ISSN 0018-9545.
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Official URL: https://doi.org/10.1109/TVT.2020.3019347
Abstract
A series of integrated equalizers based on joint buck-boost (BB) and switched-capacitor (SC) converters are proposed for balancing the voltages of series-connected battery packs. All these equalizers realize the any-cells-to-any-cells (AC2AC) equalization mode without increasing any MOSFETs and drivers. Corresponding operational principles are analyzed and the expressions of balancing currents are verified by experimental waveforms. According to the comparative balancing experiments for four and six series-connected Li-ion cells, one proposed CBB-PCSC equalizer, which achieves the dual AC2AC balancing modes through the integration of both coupled buck-boost (CBB) and parallel-connected switched-capacitor (PCSC) converters, leads to the highest balancing speed and efficiency. Moreover, compared with several conventional equalizers, this CBB-PCSC topology also has the compact size and low cost, making it become a well-performing integrated topology for automotive battery voltages equalization.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
Journal or Publication Title: | IEEE Transactions on Vehicular Technology | ||||||||
Publisher: | IEEE | ||||||||
ISSN: | 0018-9545 | ||||||||
Official Date: | November 2020 | ||||||||
Dates: |
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Volume: | 69 | ||||||||
Number: | 11 | ||||||||
Page Range: | 12716 -12724 | ||||||||
DOI: | 10.1109/TVT.2020.3019347 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Reuse Statement (publisher, data, author rights): | © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
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