Patent ID: 7683576

Claim:
A smart lead-acid battery charging/discharging management system comprising multiple identical smart battery units, an alternator, and a voltage regulator; each smart battery unit being comprised of a controller including a micro-control unit, a time synchronous unit, an access unit, a display unit, an independent communication device, and a smart identifier to execute smart battery unit management, data storage, system identification, master-slave communication, independent communication, estimation of battery life cycle, and judgment of battery charging voltage limits; a lead-acid battery serving as an energy storage device to control charging based on cycle counts and ambient temperature since overcharging or over-discharging will significantly affect energy storage capacity and cycle life; a sensor switch device including a charging switch and a discharging switch to detect voltage, amperage, and temperature data of the lead-acid battery and to further execute charging/discharging management of the battery; and a transmission interface for data transmission among smart battery units; wherein a controller from a smart battery unit within the system is designated as a master controller for the system to automatically constitute with other devices a master-slave system; the master controller causes all batteries to be charged in sequence by turns; and each battery in the course of charging maintains its electrode plate in active status under the lower demand of power to upgrade charging efficiency and extend service life of the lead-acid battery.