BATTERY CAPACITY ESTIMATION APPARATUS AND METHOD, AND BATTERY MANAGEMENT APPARATUS PROVIDED WITH SAME AND METHOD THEREOF
First Claim
1. A battery capacity estimation apparatus comprising:
- a battery;
a sensing unit connected to the battery to measure an OCV of the battery;
an SOC estimation unit connected to the sensing unit to estimate an SOC of the battery using the OCV measured from the sensing unit;
a memory unit configured to store data including the SOC and the OCV of the battery the memory unit being connected to the SOC estimation unit; and
an operation unit connected to the SOC estimation unit and the memory unit, the operation unit being configured to calculate an SOC reduction degree according to a use voltage range change and re-calculate a changed SOC according to a changed use capacity.
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Accused Products
Abstract
A battery capacity estimation apparatus including: a battery; a sensing unit connected to the battery to measure an OCV of the battery; an SOC estimation unit connected to the sensing unit to estimate an SOC of the battery using the OCV measured from the sensing unit; a memory unit storing data including the SOC and the OCV of the battery, the memory unit being connected to the SOC estimation unit; and an operation unit connected to the SOC estimation unit and the memory unit, the operation unit being configured to calculate an SOC reduction degree according to a use voltage range change and re-calculate a changed SOC according to a changed use capacity.
2 Citations
16 Claims
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1. A battery capacity estimation apparatus comprising:
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a battery; a sensing unit connected to the battery to measure an OCV of the battery; an SOC estimation unit connected to the sensing unit to estimate an SOC of the battery using the OCV measured from the sensing unit; a memory unit configured to store data including the SOC and the OCV of the battery the memory unit being connected to the SOC estimation unit; and an operation unit connected to the SOC estimation unit and the memory unit, the operation unit being configured to calculate an SOC reduction degree according to a use voltage range change and re-calculate a changed SOC according to a changed use capacity. - View Dependent Claims (2, 3, 4)
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5. A battery management apparatus comprising:
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a battery; a sensing unit connected to the battery to measure an OCV of the battery; an SOC estimation unit connected to the sensing unit to estimate an SOC of the battery using the OCV measured from the sensing unit; a memory unit configured to store data including the SOC and the OCV of the battery, the memory unit being connected to the SOC estimation unit; an operation unit connected to the SOC estimation unit and the memory unit and configured to calculate an SOC reduction degree according to a use voltage range change and re-calculate a changed SOC according to a changed use capacity; a control unit connected to at least one of the operation unit and the memory unit to control charging and discharging of the battery according to a state of the battery by referring to the SOC; and a switching unit provided between the battery and a load to charge/discharge the battery according to a control signal of the control unit. - View Dependent Claims (6)
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7. A battery capacity estimation method comprising:
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measuring an OCV of a battery; estimating an initial SOC according to the measured OCV; calculating a changed SOC after calculating a SOC reduction degree according to a use voltage range change; and calculating a changed OCV according to the changed SOC. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A battery management method comprising:
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measuring an OCV of a battery; estimating an initial SOC according to the measured OCV; calculating a changed SOC after calculating a SOC reduction degree according to a use voltage range change; calculating a changed OCV according to the changed SOC; and controlling charging/discharging of the battery according to the state of the battery with reference to the changed SOC. - View Dependent Claims (15, 16)
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Specification