New Lithium Battery Balancing Circuit Design Using Isolated Converter

In order to pursue small size, high efficiency and low cost, this paper proposes a method of balancing the battery pack using an isolated bidirectional converter. The proposed converter adopts active clamping technology and synchronous rectification technology, combined with switch control, and can...

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Bibliographic Details
Published in2019 IEEE Eurasia Conference on IOT, Communication and Engineering (ECICE) pp. 346 - 349
Main Authors Liu, Van-Tsai, Lu, Hong-Yi, Wang, Sun-Kai
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2019
Subjects
active balanced
Battery management systems
Clamps
Estimation
isolated bidirectional converter
Lithium batteries
Lithium battery
soft switching
State of charge
Switches
Zero voltage switching
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Summary:In order to pursue small size, high efficiency and low cost, this paper proposes a method of balancing the battery pack using an isolated bidirectional converter. The proposed converter adopts active clamping technology and synchronous rectification technology, combined with switch control, and can achieve zero voltage switching (ZVS) effect and improve efficiency. In order to improve the accuracy of the state of charge (SOC) estimation, the average SOC is calculated by a lookup table method and a Coulomb integration method to determine the equilibrium state of the battery pack.
DOI:10.1109/ECICE47484.2019.8942764