Title :
A MCU-based intelligent charger with multi-charging mode
Author :
Chang-Hua Lin ; Chi-Yu Chen ; Min-Hsuan Hung ; Chien-Ming Wang ; Liang-Cheng Lee
Author_Institution :
Dept. of Electr. Eng., Tatung Univ., Taipei, Taiwan
Abstract :
A MCU-based charger for the LiFeO4 battery pack is implemented in this paper. The main circuit is a full-bridge phase-shift converter. The user can select the charging strategy and observe the state of charge (SOC) of the battery from the operation interface. Moreover, the proposed charger system communicates with the battery management system via the I2C interface, and generates the charging current according to the estimated SOC and the selected operation mode. In addition, the charging current is kept at preset constant value by modulating the phase-shift amount to short the charging time and improve the battery lifespan. Furthermore, there are three charging strategy for user selection. All the experimental results are also provided.
Keywords :
battery chargers; battery management systems; iron compounds; lithium compounds; microcontrollers; power convertors; secondary cells; I2C interface; LiFeO4; MCU-based intelligent charger; battery SOC estimation; battery lifespan improvement; battery management system; battery state of charge estimation; charging current generation; full-bridge phase-shift converter; microcontroller-based intelligent charger; multicharging mode; Batteries; Conferences; Current measurement; Equivalent circuits; Error analysis; Load flow; System-on-chip; SOC; battery; charger; full-bridge phase-shift; microcontroller-based;
Conference_Titel :
Industrial Electronics and Applications (ICIEA), 2014 IEEE 9th Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4799-4316-6
DOI :
10.1109/ICIEA.2014.6931175
