Method for detecting remaining battery current, voltage, and temperature capacity by continuously monitoring
First Claim
1. A battery charging condition detecting method comprising steps of:
- obtaining a map charging index representing discharge characteristics of a battery based on a battery voltage under a predetermined discharging operation, said map charging index indicating 100 at a first battery voltage obtainable immediately after said battery starts said predetermined discharging operation from a fully charged condition and also indicating 0 at a second battery voltage obtainable when said battery substantially ceases said predetermined discharging operation;
calculating an accumulative charging index by subtracting a charged capacity from a temporary full-charge capacity of said battery;
correcting said temporary full-charge capacity based on a difference between said map charging index and said accumulative charging index, thereby obtaining a corrected full-charge capacity; and
calculating a dischargeable capacity of said battery by subtracting a discharged capacity from said corrected full-charge capacity.
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Abstract
A map charging index representing discharge characteristics of a battery is obtained based on a battery voltage under a predetermined discharging operation. The map charging index indicates 100 at a first battery voltage obtainable immediately after the battery starts the discharging operation from a fully charged condition and also indicates 0 at a second battery voltage obtainable when the battery substantially ceases the discharging operation. An accumulative charging index is calculated by subtracting a charged capacity from a temporary full-charge capacity of the battery. The temporary full-charge capacity is corrected based on a difference between the map charging index and the accumulative charging index, thereby obtaining a corrected full-charge capacity. And, a dischargeable capacity of the battery is calculated by subtracting the discharged capacity from the corrected full-charge capacity.
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Citations
26 Claims
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1. A battery charging condition detecting method comprising steps of:
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obtaining a map charging index representing discharge characteristics of a battery based on a battery voltage under a predetermined discharging operation, said map charging index indicating 100 at a first battery voltage obtainable immediately after said battery starts said predetermined discharging operation from a fully charged condition and also indicating 0 at a second battery voltage obtainable when said battery substantially ceases said predetermined discharging operation; calculating an accumulative charging index by subtracting a charged capacity from a temporary full-charge capacity of said battery; correcting said temporary full-charge capacity based on a difference between said map charging index and said accumulative charging index, thereby obtaining a corrected full-charge capacity; and calculating a dischargeable capacity of said battery by subtracting a discharged capacity from said corrected full-charge capacity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification