Battery charger and charge control system

摘要

A battery charger and charge control system charges series connected lithium-ion batteries to a voltage in the range of about 4.1 volts and about 4.3 volts per battery with a voltage input to the system in the range of about 4.1 to about 4.5 volts per battery. Switching efficiencies associated with the system allow the charging and charge control circuitry of the system to be positioned within the battery housing. The charging and charge control circuitry may mount onto a single circuit board. Morever, the battery charger and charge control system allows the lithium-ion batteries to simultaneously charge and discharge.