ENHANCED-ACCURACY BATTERY CAPACITY PREDICTION
First Claim
1. A method comprising:
- measuring a voltage across a battery;
detecting a characteristic value of the battery;
selecting a curve from a plurality of battery discharge curves based at least in part on the detected characteristic value;
determining a residual battery capacity based at least in part on the selected battery discharge curve and the measured voltage; and
displaying the residual battery capacity.
1 Assignment
0 Petitions
Accused Products
Abstract
Enhanced-accuracy battery capacity prediction in which a residual capacity of a battery associated with a mobile electronic device are determined and displayed. One or more characteristic values of the battery are detected and an appropriate battery discharge curve is selected from multiple stored battery discharge curves based on the electrical current supply rate or a number of historical charge/discharge cycles of the battery, or both. A detected battery voltage is compared to the selected curve, and the residual capacity of the battery is calculated based on the present discharge capacity and the useful discharge capacity of the battery based on the selected curve. The residual capacity accurately reflects the present operational state of the device and the present state of the battery. The accurate residual capacity of the battery is displayed on a display device for user viewing.
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Citations
31 Claims
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1. A method comprising:
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measuring a voltage across a battery; detecting a characteristic value of the battery; selecting a curve from a plurality of battery discharge curves based at least in part on the detected characteristic value; determining a residual battery capacity based at least in part on the selected battery discharge curve and the measured voltage; and displaying the residual battery capacity. - View Dependent Claims (2, 3)
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4. A method comprising:
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detecting a voltage across a battery, an electrical current supplied by the battery, and a number of charge/discharge cycles of the battery; selecting a first curve from a plurality of battery discharge curves based at least in part on the electrical current supplied by the battery; selecting a second curve from the plurality of battery discharge curves based at least in part on the number of charge/discharge cycles; generating a combined curve based at least in part on the first and second curves; determining a residual battery capacity based at least in part on the measured voltage and the combined curve; and displaying the residual battery capacity. - View Dependent Claims (5)
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6. A method comprising:
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measuring a voltage across a battery; selecting a curve from a plurality of battery discharge curves; and determining a residual battery capacity based at least in part on the measured voltage and the selected curve. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method, comprising:
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measuring a voltage across a battery; measuring an electrical current supplied by the battery; receiving a number of charge/discharge cycles of the battery; selecting a first curve from a plurality of battery discharge curves based at least in part on the measured electrical current; selecting a second curve from the plurality of battery discharge curves based at least in part on the received number; generating a combined curve based at least in part on the first and second curves; and determining a residual battery capacity based at least in part on the measured voltage and the combined curve. - View Dependent Claims (23)
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24. A device comprising:
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a battery; a memory configured to store a plurality of battery discharge curves based at least in part on a discharge characteristic of the battery; a battery characteristic value detector configured to measure a voltage across the battery and a characteristic value of the battery; a battery discharge curve selector configured to select a curve from the plurality of battery discharge curves based at least in part on the measured characteristic value; a controller configured to determine a residual battery capacity based at least in part on the measured voltage and the selected curve; and a display configured to display the residual battery capacity. - View Dependent Claims (25)
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26. A device comprising:
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a battery; a memory configured to store a plurality of battery discharge curves based at least in part on a discharge characteristic of the battery; a battery characteristic value detector configured to measure a voltage across the battery, an electrical current supplied by the battery, and a number of charge/discharge cycles; a battery discharge curve selector configured to select a first curve from the plurality of battery discharge curves based at least in part on the electrical current supplied by the battery, and a second curve from the plurality of battery discharge curves based at least in part on the number of charge/discharge cycles; a controller configured to generate a combined curve based at least in part on the first and second curves, and to determine a residual battery capacity based at least in part on the measured voltage and the combined curve; and a display configured to display the residual battery capacity.
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27. A device comprising:
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a battery; a battery characteristic value detector configured to measure a voltage across the battery; a battery discharge curve selector configured to select a curve from a plurality of battery discharge curves; and a controller configured to determine a residual battery capacity based at least in part on the measured voltage and the selected curve. - View Dependent Claims (28, 29, 30)
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31. A device comprising:
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a battery; a battery characteristic value detector configured to measure a voltage across the battery and an electrical current supplied by the battery; a battery discharge curve selector configured to receive a number of charge/discharge cycles of the battery, and to select a first curve from a plurality of battery discharge curves based at least in part on the measured electrical current and a second curve from the plurality of battery discharge curves based at least in part on the received number; and a controller configured to generate a combined curve based at least in part on the first and second curves, and to determine a residual battery capacity based at least in part on the measured voltage and the combined battery discharge curve.
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Specification