Assisting converter based integrated battery management system for low power applications

This paper introduces a new battery management system for portable electronics applications based on the flyback converter. This new architecture integrates the voltage step-up and balancing functions inside a single converter. The step-up function is obtained using an assisting concept, where the f...

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Bibliographic Details
Main Authors: Shousha, Mahmoud, McRae, Timothy, Prodic, Aleksandar, Marten, Victor
Format: Conference Proceeding
Language:English
Subjects:
Batteries
Capacitors
Computer architecture
Inductors
Prototypes
System-on-chip
Voltage control
Online Access:Request full text
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Description
Summary:This paper introduces a new battery management system for portable electronics applications based on the flyback converter. This new architecture integrates the voltage step-up and balancing functions inside a single converter. The step-up function is obtained using an assisting concept, where the flyback output is placed at the top of the battery pack and is therefore only processing a portion of the output power. As a result, high power processing efficiency and small converter volume are achieved. The operation of the system is regulated by a digital controller that provides voltage regulation and charge balancing of the battery cells at the same time. Experimental results obtained with 8-to-12V, 20W, 250 KHz prototype demonstrate a peak efficiency of 93.4% and show that the assisting flyback requires about 9 times smaller output capacitor than the conventional boost while maintaining approximately the same inductor volume.
ISSN:1048-2334
2470-6647
DOI:10.1109/APEC.2014.6803517