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

fYear

2014

fDate

9-11 June 2014

Firstpage

286

Lastpage

291

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications (ICIEA), 2014 IEEE 9th Conference on

Conference_Location

Hangzhou

Print_ISBN

978-1-4799-4316-6

Type

conf

DOI

10.1109/ICIEA.2014.6931175

Filename

6931175