Method and system for joint battery state and parameter estimation
First Claim
1. A method for estimating a present augmented state of an electrochemical cell system, the method comprising:
- making an internal augmented states prediction of the cell where said augmented state always comprises at least one internal state value and at least one internal parameter value;
making an uncertainty prediction of said internal augmented states prediction;
correcting said internal augmented states prediction and said uncertainty prediction;
applying an algorithm that iterates said making an internal augmented states prediction, said making an uncertainty prediction and said correcting;
providing an ongoing estimation of said augmented state and an ongoing uncertainty of said augmented state estimation as a result of the application of the algorithm; and
ensuring convergence of one or more augmented states to their respective physical values.
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Abstract
A method and apparatus for estimation of the augmented state of an electrochemical cell, the method comprising: making an internal augmented states prediction of the cell where the augmented state comprises at least one internal state value and at least one internal parameter value; making an uncertainty prediction of the internal augmented states prediction; correcting the internal augmented states prediction and the uncertainty prediction; and applying an algorithm that iterates the making an internal augmented states prediction, the making an uncertainty prediction and the correcting to yield an ongoing estimation to the augmented state and an ongoing uncertainty to the augmented state estimation.
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Citations
50 Claims
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1. A method for estimating a present augmented state of an electrochemical cell system, the method comprising:
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making an internal augmented states prediction of the cell where said augmented state always comprises at least one internal state value and at least one internal parameter value; making an uncertainty prediction of said internal augmented states prediction; correcting said internal augmented states prediction and said uncertainty prediction; applying an algorithm that iterates said making an internal augmented states prediction, said making an uncertainty prediction and said correcting; providing an ongoing estimation of said augmented state and an ongoing uncertainty of said augmented state estimation as a result of the application of the algorithm; and ensuring convergence of one or more augmented states to their respective physical values. - 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, 49)
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24. An apparatus configured to estimate a present augmented state of a cell pack system, the apparatus comprising:
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a component configured to make an internal augmented states prediction of a cell where said augmented state always comprises at least one internal state value and at least one internal parameter value; a component configured to make an uncertainty prediction of said internal augmented states prediction; a component configured to correct said internal augmented states prediction and said uncertainty prediction; a component configured to apply an algorithm that iterates steps taken by said component configured to make an internal augmented states prediction, said component configured to make an uncertainty prediction and said component configured to correct; and a component configured to yield an ongoing estimation of said augmented state and an ongoing uncertainty of said augmented state estimation as a result of the application of the algorithm; and a component configured to ensure convergence of one or more augmented states to their respective physical values. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 50)
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47. A system for estimating a present augmented state of an electrochemical cell, the system comprising:
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a means for making an internal augmented states prediction of the cell where said augmented state always comprises at least one internal state value and at least one internal parameter value; a means for making an uncertainty prediction of said internal augmented states prediction; a means for correcting said internal augmented states prediction and said uncertainty prediction; a means for applying an algorithm that iterates said making an internal augmented states prediction, said making an uncertainty prediction and said correcting; a means for yielding an ongoing estimation of said augmented state and an ongoing uncertainty of said augmented state estimation as a result of applying the algorithm; and a means for ensuring convergence of one or more augmented states to their respective physical values.
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48. A computer readable medium encoded with a machine-readable computer program code, wherein said computer readable medium includes instructions for causing a computer to implement a method for estimating present augmented state of an electrochemical cell, the method comprising:
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making an internal augmented states prediction of the cell where said augmented state always comprises at least one internal state value and at least one internal parameter value; making an uncertainty prediction of said internal augmented states prediction; correcting said internal augmented states prediction and said uncertainty prediction; applying an algorithm that iterates said making an internal augmented states prediction, said making an uncertainty prediction and said correcting; yielding an ongoing estimation of said augmented state and an ongoing uncertainty of said augmented state estimation as a result of the application of the algorithm; and ensuring convergence of one or more augmented states to their respective physical values.
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Specification