Discharge curve calibration system and calibration method for initial discharging curve of battery
First Claim
1. A calibration method for a discharging curve of a battery, comprising:
- acquiring an initial discharging curve of the battery;
measuring a first open circuit voltage value of the battery at a first time point and a second open circuit voltage value of the battery at a second time point;
according to the initial discharging curve, acquiring a first discharge capacity corresponding to the first open circuit voltage value and a second discharge capacity corresponding to the second open circuit voltage value;
calculating an ideal discharge capacity according to the first discharge capacity and the second discharge capacity;
measuring a real discharge capacity of the battery between the first time point and the second time point; and
calibrating the initial discharging curve to generate a current discharging curve according to a total discharge capacity difference between the ideal discharge capacity and the real discharge capacity,wherein the initial discharging curve comprises a plurality of sample points, wherein each sample point corresponds to a discharge capacity and an open circuit voltage, and the step of calibrating the initial discharging curve to generate the current discharging curve according to the discharge capacity difference further comprises the step of;
calibrating discharge intervals between any two adjoining sample points according to the total discharge capacity difference to generate the current discharging curve.
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Accused Products
Abstract
A calibration method for an initial discharging curve of a battery is provided. The method includes: measuring a first open circuit voltage at a first time point, a corresponding first discharge capacity, a second open circuit voltage at a second time point, and a corresponding second discharge capacity according to an initial discharging curve; calculating an ideal discharge capacity according to the first discharge capacity and the second discharge capacity; measuring an real discharge capacity between the first time point and the second time point; determining a total discharge capacity difference according to the ideal discharge capacity and the real discharge capacity to calibrate the initial discharging curve to generate a current discharging curve.
19 Citations
11 Claims
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1. A calibration method for a discharging curve of a battery, comprising:
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acquiring an initial discharging curve of the battery; measuring a first open circuit voltage value of the battery at a first time point and a second open circuit voltage value of the battery at a second time point; according to the initial discharging curve, acquiring a first discharge capacity corresponding to the first open circuit voltage value and a second discharge capacity corresponding to the second open circuit voltage value; calculating an ideal discharge capacity according to the first discharge capacity and the second discharge capacity; measuring a real discharge capacity of the battery between the first time point and the second time point; and calibrating the initial discharging curve to generate a current discharging curve according to a total discharge capacity difference between the ideal discharge capacity and the real discharge capacity, wherein the initial discharging curve comprises a plurality of sample points, wherein each sample point corresponds to a discharge capacity and an open circuit voltage, and the step of calibrating the initial discharging curve to generate the current discharging curve according to the discharge capacity difference further comprises the step of; calibrating discharge intervals between any two adjoining sample points according to the total discharge capacity difference to generate the current discharging curve. - View Dependent Claims (2, 3, 4)
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5. A calibration method for a discharging curve of a battery, comprising:
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acquiring an initial discharging curve of the battery; measuring a first open circuit voltage value of the battery at a first time point and a second open circuit voltage value of the battery at a second time point; according to the initial discharging curve, acquiring a first discharge capacity corresponding to the first open circuit voltage value and a second discharge capacity corresponding to the second open circuit voltage value; calculating an ideal discharge capacity according to the first discharge capacity and the second discharge capacity; measuring a real discharge capacity of the battery between the first time point and the second time point; calibrating the initial discharging curve to generate a current discharging curve according to a total discharge capacity difference between the ideal discharge capacity and the real discharge capacity; calculating a count of discharge intervals between the first time point and the second time point according to the ideal discharge capacity; calculating an averaged discharge capacity difference according to the count of the discharge intervals and the total discharge capacity difference; and calibrating the initial discharging curve according to the averaged discharge capacity difference and the count of the discharge intervals.
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6. A discharge curve calibration system, capable of calibrating an initial discharge curve of a battery, comprising:
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a discharge capacity measuring unit, coupled to the battery to measure a discharge capacity of the battery; and a controller, calculating an ideal discharge capacity according to the initial discharge curve, a first open circuit voltage value of the battery at a first time point and a second open circuit voltage value of the battery at a second time point, and controlling the discharge capacity measuring unit to measure a real discharge capacity of the battery between the first time point and the second time point, wherein the controller calibrates the initial discharging curve to generate a current discharging curve according to a total discharge capacity difference between the ideal discharge capacity and the real discharge capacity, wherein the initial discharging curve comprises a plurality of sample points, wherein each sample point corresponds to a discharge capacity and an open circuit voltage, and the controller calibrates discharge intervals between any two adjoining sample points according to the total discharge capacity difference to generate the current discharging curve. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification