METHOD OF DETERMINING THE STATE OF CHARGE OF A BATTERY OF AN ELECTRONIC APPLIANCE
First Claim
1. A method, comprising:
- iteratively estimating a state of charge of a battery, at least one iteration of the estimating including;
receiving an indication of an intensity of current supplied by the battery;
receiving an indication of a voltage supplied by the battery;
estimating a first state of charge of the battery during the iteration based on an estimated first state of charge of a previous iteration and on the received indication of the intensity of current supplied by the battery;
estimating an intensity of current supplied by the battery based on the received indication of the voltage supplied by the battery and on a corrected state of charge of the battery of the previous iteration, andcalculating a corrected state of charge of the iteration by adding to the estimated first state of charge of the iteration a corrective term, the corrective term being based on a product of a first correction gain and a factor representative of a difference between the estimated intensity of current and the received indication of the intensity of current supplied by the battery.
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Accused Products
Abstract
A state of charge of a battery is estimated in several iterations, each iteration including: acquiring a measurement of intensity of current supplied by the battery, acquiring a measurement of voltage supplied by the battery, estimating a first state of charge of the battery based on a first estimated state of charge obtained upon a previous iteration and on the current intensity measurement, estimating a value of intensity of current supplied by the battery based on the voltage measurement and on a state of charge of the battery obtained upon the previous iteration, and calculating a corrected state of charge by adding to the first estimated state of charge a corrective term obtained by the product of a first correction gain multiplied by a factor representative of a difference between the estimated and measured current intensities.
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Citations
27 Claims
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1. A method, comprising:
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iteratively estimating a state of charge of a battery, at least one iteration of the estimating including; receiving an indication of an intensity of current supplied by the battery; receiving an indication of a voltage supplied by the battery; estimating a first state of charge of the battery during the iteration based on an estimated first state of charge of a previous iteration and on the received indication of the intensity of current supplied by the battery; estimating an intensity of current supplied by the battery based on the received indication of the voltage supplied by the battery and on a corrected state of charge of the battery of the previous iteration, and calculating a corrected state of charge of the iteration by adding to the estimated first state of charge of the iteration a corrective term, the corrective term being based on a product of a first correction gain and a factor representative of a difference between the estimated intensity of current and the received indication of the intensity of current supplied by the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device, comprising:
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a memory; and processing circuitry, which, in operation, iteratively estimates a state of charge of a battery, at least one iteration of the estimating including; receiving an indication of an intensity of current; receiving an indication of a voltage; estimating a first state of charge during the iteration based on an estimated first state of charge of a previous iteration and on the received indication of the intensity of current; estimating an intensity of current based on the received indication of the voltage and on a corrected state of charge of the previous iteration, and calculating a corrected state of charge of the iteration by adding to the estimated first state of charge of the iteration a corrective term, the corrective term being based on a product of a first correction gain and a factor representative of a difference between the estimated intensity of current and the received indication of the intensity of current. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A non-transitory computer-readable memory medium whose contents cause one or more processing devices to, in operation, iteratively estimate a state of charge of a battery, at least one iteration of the estimating including:
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receiving an indication of an intensity of current; receiving an indication of a voltage; estimating a first state of charge during the iteration based on an estimated first state of charge of a previous iteration and on the received indication of the intensity of current; estimating an intensity of current based on the received indication of the voltage and on a corrected state of charge of the previous iteration, and calculating a corrected state of charge of the iteration by adding to the estimated first state of charge of the iteration a corrective term, the corrective term being based on a product of a first correction gain and a factor representative of a difference between the estimated intensity of current and the received indication of the intensity of current. - View Dependent Claims (25, 26, 27)
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Specification