Smart Battery Pack for Electric Vehicles Based on Active Balancing with Wireless Communication Feedback

Mattia Ricco, Jinhao Meng, Tudor Gherman, Gabriele Grandi and Remus Teodorescu
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Mattia Ricco: Department of Electric, Electronic and Information Engineering, University of Bologna, 40136 Bologna, Italy
Jinhao Meng: School of Automation, Northwestern Polytechnical University, Xi’an 710072, China
Tudor Gherman: Applied Electronics Department, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania
Gabriele Grandi: Department of Electric, Electronic and Information Engineering, University of Bologna, 40136 Bologna, Italy
Remus Teodorescu: Energy Technology Department, Aalborg University, 9220 Aalborg, Denmark

Energies, 2019, vol. 12, issue 20, 1-15

Abstract: In this paper, the concept of smart battery pack is introduced. The smart battery pack is based on wireless feedback from individual battery cells and is capable to be applied to electric vehicle applications. The proposed solution increases the usable capacity and prolongs the life cycle of the batteries by directly integrating the battery management system in the battery pack. The battery cells are connected through half-bridge chopper circuits, which allow either the insertion or the bypass of a single cell depending on the current states of charge. This consequently leads to the balancing of the whole pack during both the typical charging and discharging time of an electric vehicle and enables the fault-tolerant operation of the pack. A wireless feedback for implementing the balancing method is proposed. This solution reduces the need for cabling and simplifies the assembling of the battery pack, making also possible a direct off-board diagnosis. The paper validates the proposed smart battery pack and the wireless feedback through simulations and experimental results by adopting a battery cell emulator.

Keywords: smart battery pack; active balancing; wireless feedback; electrical vehicles (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: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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