Battery charger current limiting based on maximum current capacity of AC adapter as determined by adapter identification subsystem
February 15, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesElectronic system to discriminate a plurality of power sources Distributed power regulation in a portable computer to optimize heat dissipation and maximize battery run-time for various power modes Control system for charging batteries and electronic apparatus using same Power supply system for portable electronic devices IC card compatible with different supply voltages, IC card system comprising the same, and IC for the IC card Power supply control in portable data terminal Method and system to determine external power available and fault states Patent #: 6795302 InventorsApplicationNo. 10077468 filed on 02/15/2002US Classes:713/340, Having power source monitoring320/162, With detection of current or voltage amplitude320/106, MEANS TO IDENTIFY CELL OR BATTERY TYPE307/64, Substitute or emergency source320/128, With charging710/301, Card insertion700/22, Electrical power distribution361/679For electronic systems and devicesExaminersPrimary: Lee, Thomas C.Assistant: Wang, Albert Attorney, Agent or FirmInternational ClassG06F001/26AbstractAn information handling system comprising a processor, a battery to provide power to the information handling system, an AC adapter input port coupled to the battery configured to receive an AC adapter, and a battery charger coupled to the battery and the AC adapter input port configured to identify a characteristic of the AC adapter and adjust a battery charge current based upon the characteristic. The battery charger comprises an adapter identification subsystem coupled to the AC adapter input port configured to identify the characteristic and provide an adjustment current, and an adjustable charger coupled to the adapter identification subsystem and the battery, configured to set the battery charging current based upon the adjustment current. The AC adapter identification subsystem comprises an adapter identification circuit coupled to the AC adapter input port configured to identify the characteristic, and a microcontroller configured to provide the adjustment current to the adjustable charger. | |
