Battery Charging Method and Battery Pack Using the Same
First Claim
1. A battery charging method in which constant-current charging is performed in a plurality of phases, wherein a magnitude of charge current with which a battery is charged varies according to a charge amount of the battery.
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Abstract
A battery charging method, and a battery pack using the same. In the battery charging method, constant-current charging is performed in a plurality of phases, and a magnitude of charge current with which a battery is charged is determined according to a charge amount of the battery. The charge amount may be determined by measuring the voltage of the battery or by integrating the charging current over time. When the battery charging method is used, a battery charging time is reduced and the battery is less apt to be overcharged.
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Citations
16 Claims
- 1. A battery charging method in which constant-current charging is performed in a plurality of phases, wherein a magnitude of charge current with which a battery is charged varies according to a charge amount of the battery.
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10. A battery pack, comprising:
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a rechargeable battery; and a battery management unit to determine a charge amount of the battery and to control a magnitude of charging current used to charge the battery, wherein the magnitude of the charging current is held constant within each of a plurality of phases, the magnitude of charging current varies among different phases according to the charge amount of the battery. - View Dependent Claims (11, 12, 13, 14)
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15. A method of charging a battery, comprising:
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applying a first charging current to a battery; determining a charge amount of the battery by calculating a state of charge (SOC) by integrating the charging current over time; determining whether to apply a second and lesser charging current to the battery by determining whether the SOC has reached a first threshold. - View Dependent Claims (16)
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Specification