Patent ID: 8237410
Filing Date: 2012-08-07
Classification: H02J

Abstract:
1. A handheld device with a fast-charging capability, connected to a charger to obtain an electric power, comprising: a battery; a charging circuit, electrically connected to the charger and outputting a charge signal when obtaining the electric power; a safety circuit, connected to the charging circuit, for restricting an upper limit of a current transferred by the charging circuit, wherein the safety circuit comprises an adjusting unit for storing a plurality of setting values, wherein the safety circuit further comprises a current-limit sensing circuit, and when the safety circuit releases the restriction on the charging circuit, the current-limit sensing circuit detects a limit of an electric power carried by the charging circuit so as to enable the safety circuit to adjust the upper limit of the electric power transferred by the charging circuit; an input module, for a user to input an emergency charge command; and a control unit, connected to the charging circuit and the safety circuit, for instructing the charging circuit to transfer a current to the battery when obtaining the charge signal, and instructing the adjusting unit to adjust a restriction on the charging circuit through using a setting value corresponding an adjusting information contained in the emergency charge command according to the adjusting information when obtaining the emergency charge command.