Research on Four-Stage Constant Current Charging Method Based on the Aging Degree of a Li-ion Battery Pack

  • 郭 至恆

Student thesis: Doctoral Thesis


In this thesis three of lithium-ion batteries in series will be applied in the charging experiment as aged lithium-ion batteries they will be charged in the proportion of remaining capacity as considering the degree of aging (DOA) Before beginning the charging experiment we should first discuss the balancing circuit of the batteries This thesis selects a buck converter that is used as a connection between batteries and power supply Based on the setting of the duty on MOSFET switches and the charging current of power supply the corresponding charging current value can be found In this thesis one has to establish the relationship among the duty of MOSFET switches the output current of power supply and the charging current of batteries Then the DOA of each battery can be determined via completely the charging and discharging processes Next the charging current value of each battery will be set according to the current aging degree of the battery the conduction rate of the MOSFET switch and the output current of the power supply so as to charge the battery pack with a four-stage constant current
Date of Award2020
Original languageEnglish
SupervisorChien-Hsing Lee (Supervisor)

Cite this