Balance Method of Lithium-Ion Battery Pack Based on Multi-Secondary Coaxial-Winding Transformer

Man Zhang; Cheng Ning Zhang; Zhi Fu Wang

doi:10.4028/www.scientific.net/AMM.310.240

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 310Balance Method of Lithium-Ion Battery Pack Based...

Balance Method of Lithium-Ion Battery Pack Based on Multi-Secondary Coaxial-Winding Transformer

Abstract:

Due to the inconsistency of the lithium-ion battery pack, the active balance method based on multi-secondary coaxial-winding transformer was introduced. The control principle of the balance system was analyzed, and the energy transfer process was explained. A balance system model was established by using MATLAB/Simulink, including battery model, transformer model and SOC calculate model. The duty cycle and the frequency of the MOSFET in the primary and second side of the transformer were studied to work out the balance system control strategy. According to the simulation results, multi-secondary coaxial-winding transformer can be used to balance the batteries’ voltages, and the energy losses can be reduced by choosing high-frequency transformer.

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Periodical:

Applied Mechanics and Materials (Volume 310)

Pages:

240-243

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.310.240

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Online since:

February 2013

Authors:

Man Zhang, Cheng Ning Zhang, Zhi Fu Wang

Keywords:

Active Balance, Battery Management System, Electric Vehicle (EV), Lithium-Ion Battery

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