METHOD FOR DETERMINING A PARAMETER OF AT LEAST ONE ACCUMULATOR OF A BATTERY
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Accused Products
Abstract
A method for determining a parameter such as the resistance of at least one accumulator of a battery, comprising the steps:
- measuring a first voltage (U1) when the current is substantially equal to a predetermined value;
- conducting the plurality of voltage and current measurements (Un; In) during a current pulse;
- calculating a plurality of resistance values (Rn) from the first voltage and from the plurality of voltage and current measurements;
- determining a resistance value as the average of the calculated resistance values and an associated standard deviation;
- determining an absolute uncertainty on the value of the resistance as the product of the standard deviation and of a Student coefficient;
- if the relative uncertainty is less than or equal to a predetermined accuracy threshold, validating the resistance value (R).
12 Citations
42 Claims
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1-20. -20. (canceled)
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21. A method for determining a parameter of at least one accumulator of a battery, the method comprising the steps:
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conducting a series of voltage and current measurements (Un;
In) on the terminals of said at least one accumulator;calculating a plurality of values of the parameter depending on the voltage and current measurements (Un;
In);determining a value of the parameter as the average of the calculated values of the parameter and an associated standard deviation; determining an absolute uncertainty on the value of the parameter as the product of the standard deviation and of a Student coefficient related to the number of calculated values of the parameter and to a selected probability; determining a relative uncertainty on the value of the parameter; if the relative uncertainty is less than or equal to a predetermined accuracy threshold, validating the value of the parameter. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 39, 40, 41, 42)
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Specification