BATTERY PACK AND METHOD OF CHARGING THE SAME
First Claim
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1. A method of charging a battery pack including at least one secondary battery, comprising:
- charging the secondary battery using a constant current-constant voltage method;
measuring a charging voltage applied to the secondary battery;
interrupting the charging of the secondary battery when the charging voltage of the secondary battery is equal to or higher than a first set voltage;
measuring an open circuit voltage (OCV) of the battery pack after the charging has been interrupted; and
terminating the charging of the battery pack when the measured OCV is equal to or higher than a second set voltage.
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Abstract
A method of charging a battery pack including at least one secondary battery includes charging the secondary battery using a constant current-constant voltage method, measuring a charging voltage applied to the secondary battery, interrupting the charging the secondary battery when the charging voltage of the secondary battery is equal to or higher than a first set voltage, measuring an open circuit voltage (OCV) of the battery pack in during or after a second time period after the charging has been interrupted, and terminating the charging of the battery pack when the measured OCV is equal to or higher than a second set voltage.
29 Citations
25 Claims
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1. A method of charging a battery pack including at least one secondary battery, comprising:
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charging the secondary battery using a constant current-constant voltage method; measuring a charging voltage applied to the secondary battery; interrupting the charging of the secondary battery when the charging voltage of the secondary battery is equal to or higher than a first set voltage; measuring an open circuit voltage (OCV) of the battery pack after the charging has been interrupted; and terminating the charging of the battery pack when the measured OCV is equal to or higher than a second set voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12)
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10. A method of charging a battery pack including at least one bare cell and a battery management system controlling charging/discharging of the bare cell, comprising:
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measuring a charging voltage applied to the bare cell through the battery management system; interrupting a charging of the battery pack after a first set time period when the measured charging voltage is equal to or higher than a first set voltage; measuring an OCV of the battery pack during or after a second set time period after the charging is interrupted; and terminating the charging of the battery pack when the OCV of the battery pack is equal to or higher than a second set voltage. - View Dependent Claims (13, 14, 15, 16)
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17. A battery pack comprising:
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a battery assembly including at least one unit battery; and a battery management system that controls charging/discharging of the battery assembly and controls the charging of the battery assembly according to an OCV of the battery assembly. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A method of charging a battery pack that includes at least one secondary battery, comprising:
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commencing charging of the secondary battery by a constant current-constant voltage method while measuring a charging voltage applied to the secondary battery; when the applied charging voltage of the secondary battery reaches a first set voltage, maintaining the charging voltage at the applied first set voltage for a first set time period; interrupting the charging of the secondary battery after the first set time period; measuring an open circuit voltage (OCV) of the battery pack during or after a second set time period after the interrupting of the charging; comparing the measured OCV with a second set voltage; if the measured OCV is less than a second set voltage, repeating the maintaining of the charging voltage at the applied first set voltage for the first set time period, the interrupting of the charging of the secondary battery after the first set time period, the measuring of the open circuit voltage (OCV) of the battery pack during or after the second set time period and the comparing of the measured OCV with the second set voltage; and if the measured OCV is equal to or higher than the second set voltage, terminating the charging of the battery pack. - View Dependent Claims (24, 25)
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Specification