Battery pack and charging control method thereof
AssigneeSamsung SDI Co., Ltd.
InventorsJongwoon Yang, Susumu Segawa, Tetsuya Okada, Inkyu Park
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Abstract
A charging control method for a battery pack including a plurality of battery cells in which a full charge voltage value is initially set as a first voltage value. The charging control method includes: charging the plurality of battery cells to the first voltage value in an initial charge mode; and resetting the full charge voltage value to a second voltage value less than the first voltage value in a subsequent charge mode.
Claims18
A charging control method for a battery pack comprising a plurality of battery cells in which a full charge voltage value is initially set as a first voltage value, the charging control method comprising:
- charging the plurality of battery cells to the first voltage value in an initial charge mode;
- and
- resetting the full charge voltage value to a second voltage value less than the first voltage value in a subsequent charge mode,
- wherein the resetting the full charge voltage value comprises:
- measuring a charge capacity of any one of the battery cells several times for a duration after the initial charge mode;
- storing a number of measurement times in which the measured charge capacity is equal to or higher than 90% of a rated capacity of the battery cell as first data, and storing a number of measurement times in which the measured charge capacity is less than 90% of the rated capacity of the battery cell as second data;
- comparing the first data and the second data;
- and
- decreasing the full charge voltage value from the first voltage value to the second voltage value when the first data is greater than the second data.
A charging control method for a battery pack including a plurality of battery cells in which a full charge capacity value is initially set as a first capacity value, the charging control method comprising:
- charging the plurality of battery cells to the first capacity value in an initial charge mode;
- and
- resetting the full charge capacity value to a second capacity value less than the first capacity value in a subsequent charge mode,
- wherein the resetting the full charge capacity value comprises:
- measuring a charge capacity of any one of the battery cells several times for a duration after the initial charge mode;
- storing a number of measurement times in which the measured charge capacity is equal to or higher than 90% of a rated capacities of the battery cells as first data, and storing a number of measurement times in which the measured charge capacity is less than 90% of the rated capacities of the battery cells as second data;
- comparing the first data and the second data;
- and
- decreasing the full charge capacity value from the first capacity value to the second capacity value when the first data is greater than the second data.
Dependencies are inferred from the claim text.