The Open Electrical & Electronic Engineering Journal

2014, 8 : 229-233
Published online 2014 December 31. DOI: 10.2174/1874129001408010229
Publisher ID: TOEEJ-8-229

A Kind of Intelligent Fast Charger of the Lead Acid Battery Based on MCU

Lun-qiong Chen , Bei Li and Lin Yu
School of Electronic Information and Electrical Engineering, Changzhou Institute of Technology, Changzhou, China, 213002.

ABSTRACT

Based on pulse fast charge of the lead acid battery, this paper designed a kind of intelligent battery charger, including mainly a minimum system of 16 bit MCU as intelligent center, the constant resistance discharge unit to complete SOC prediction and duty cycle of the pulse charging waveform, the voltage-current-temperature measurement unit, pulse charging control unit. The duty cycle of this charger agreed with SOC of the battery, then using short floating charge in the later stage, thus greatly optimizing the pulse charging mode. Finally, compared with the conventional constant voltage and constant current charging, the charger greatly reduced the charging time.

Keywords:

Duty cycle, microcontroller unit(MCU), pulse fast charge, state of charge (SOC), the constant resistance discharge.