System and method for controlling charging of battery of portable terminal
First Claim
1. A method for controlling charging of a battery in a portable terminal whose connecting unit is connected to a power charger adapter, the method comprising:
- checking and adjusting, at a power supply, the electric power supplied to the battery via the connecting unit;
controlling, at a controller, the power supply to charge the battery until a charging current that varies according to a charged battery capacity reaches a termination current at a first charge capacity that is lower than a full charge capacity;
adjusting, at the controller, the termination current to fully charge the battery; and
controlling, at the controller, the power supply to charge the battery until the charging current reaches the adjusted termination current at a charge capacity that is configured to be the full charge capacity.
2 Assignments
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Accused Products
Abstract
A portable terminal includes a charging control system. The system supplies electric power to the battery. If the battery is charged completely, the system stops charging the battery temporarily, adjusts the termination current, and then charges the battery to the preset second charge capacity. The system can recharge the battery if the battery of the second charge capacity under goes a natural discharge for a certain time period by a certain rate of the second charge capacity, for example, 1%, or if the maximum voltage corresponding to the second charge capacity drops by 1% of the maximum voltage. Therefore, the system can retail the maximum charged state of the battery.
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Citations
22 Claims
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1. A method for controlling charging of a battery in a portable terminal whose connecting unit is connected to a power charger adapter, the method comprising:
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checking and adjusting, at a power supply, the electric power supplied to the battery via the connecting unit; controlling, at a controller, the power supply to charge the battery until a charging current that varies according to a charged battery capacity reaches a termination current at a first charge capacity that is lower than a full charge capacity; adjusting, at the controller, the termination current to fully charge the battery; and controlling, at the controller, the power supply to charge the battery until the charging current reaches the adjusted termination current at a charge capacity that is configured to be the full charge capacity. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for controlling charging of a battery in a portable terminal, comprising:
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a connecting unit configured to connect to a power charger adapter; a battery configured to be charged by electric power supplied via the connecting unit; a power supply configured to adjust the electric power supplied to the battery; and a controller configured to; control the power supply to charge the battery until a charging current that varies according to a charged battery capacity reaches a termination current at a first charge capacity that is lower than a full charge capacity, adjust the termination current to fully charge the battery, and charge the battery until the charging current reaches the adjusted termination current at a charge capacity that is configured to be the full charge capacity. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A portable terminal comprising:
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a display unit; a memory; a connecting unit configured to connect to a power charger adapter; a battery configured to be charged by electric power supplied via the connecting unit; a power supply configured to check and adjust the electric power supplied to the battery; and a controller configured to; control the power supply to charge the battery until a charging current that varies according to a charged battery capacity reaches a termination current at a first charge capacity, which is lower than a full charge capacity, adjust the termination current to fully charge the battery, and charge the battery until the charging current reaches the adjusted termination current at a charge capacity that is configured to be the full charge capacity. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification