Apparatus and method for displaying capacity and charge/discharge state of battery in portable device
AssigneeSamsung Electronics Co., Ltd.
InventorWoo-Chang Lee
Life of this patent
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Abstract
An apparatus and method for displaying battery capacity and a charge/discharge state of a portable device are provided. The apparatus includes a charge Integrated Circuit (IC) for providing current to recharge the battery using an external charge power source, a sensing resistance interposed between the battery and the charge IC, a switch connected to the sensing resistance in parallel and opened to flow the current to the sensing resistance when a capacity of the battery is measured, and a controller for determining the capacity of the battery using voltage values at both ends of the sensing resistance measured when the switch is opened.
Claims20
A portable apparatus using a rechargeable battery, the apparatus comprising:
- a charge Integrated Circuit (IC) for providing current to recharge the battery using an external charge power source;
- a sensing resistance interposed between the battery and the charge IC;
- a switch, connected to the sensing resistance in parallel, for making the current flow to the sensing resistance by being opened when a capacity of the battery is measured;
- and
- a controller for determining the capacity of the battery using voltage values at both ends of the sensing resistance measured when the switch is opened.
An operating method of a portable device using a rechargeable battery, the portable device comprising a charge Integrated Circuit (IC) for providing current to recharge the battery using an external charge power source, a sensing resistance interposed between the battery and the charge IC, and a switch connected to the sensing resistance in parallel, the method comprising:
- when a capacity of the battery is measured, making the current flow through the sensing resistance by opening the switch;
- measuring voltage values applied to both ends of the sensing resistance;
- and
- determining the capacity of the battery using the voltage values at both ends of the sensing resistance.
An operating method of a portable device using a rechargeable battery, the method comprising:
- providing current from a charge Integrated Circuit (IC) to recharge the battery using an external charge power source;
- when a capacity of the battery is measured, making a current flow through a sensing resistance interposed between the battery and the charge IC by turning on a switch connected to the sensing resistance in parallel;
- measuring voltage values applied to both ends of the sensing resistance;
- and
- determining and displaying the capacity of the battery using the voltage values at both ends of the sensing resistance.
Dependencies are inferred from the claim text.