Balance Method of Lithium-ion Battery Pack Based on Multi-secondary Coaxial-winding Transformer
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.
electric vehicles lithium-ion battery active balance battery management system
Man Zhang Chengning Zhang Zhifu Wang
National Engineering Laboratory for Electric Vehicle, Beijing Institute of Technology, Beijing, China
国际会议
石家庄
英文
240-243
2012-10-26（万方平台首次上网日期，不代表论文的发表时间）