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A device and a method for displaying an exact charge capacity of a smart battery includes a portable electric device including a control unit for power management. The portable electric device includes a battery for providing a relative state of charge (RSOC), a control unit for controlling the devi

A device and a method for displaying an exact charge capacity of a smart battery includes a portable electric device including a control unit for power management. The portable electric device includes a battery for providing a relative state of charge (RSOC), a control unit for controlling the device to display battery residual capacity information by receiving the RSOC from the battery, and a display unit for displaying the battery residual capacity information. Here, the control unit detects an output voltage of the battery, compares the detected voltage with the RSOC, and controls the device to display the battery residual capacity information in response to data corresponding to the detected voltage, when the battery is in a period of a first low battery and the detected voltage is different from the RSOC, or controls the device to display the battery residual capacity information in response to the RSOC when the battery is in a period of a second low battery lower than the first low battery. Thus, the portable electric device can display the exact battery residual capacity information by correcting a period where an error is generated between the RSOC and the detected voltage.

대표청구항 ▼

1. A portable electronic device, comprising:a battery providing a power source to said portable electric device; a display unit; and a control unit controlling a display on said display unit of battery residual capacity information by receiving a relative state of charge from said battery, said cont

1. A portable electronic device, comprising:a battery providing a power source to said portable electric device; a display unit; and a control unit controlling a display on said display unit of battery residual capacity information by receiving a relative state of charge from said battery, said control unit detecting an output voltage of said battery, comparing the detected voltage with the relative state of charge, and controlling said portable electronic device to display the battery residual capacity information in response to data corresponding to the output voltage when the battery is in a period of a first low battery and the detected voltage is different from the relative state of charge, said control unit controlling said portable electronic device to display the battery residual capacity information in response to the relative state of charge when the battery is in a period of a second low battery lower than the first low battery period.