METHOD OF ESTIMATING SOLID PHASE POTENTIAL
First Claim
1. A machine implemented method for estimating the solid phase potentials of the electrodes of a battery, the machine implemented method comprising:
- providing battery voltage information and an estimated solid phase potential to a model coefficient updater;
updating a model coefficient by utilizing the battery voltage information and estimated solid phase potential;
providing battery current information to a battery internal variable estimator;
providing the updated model coefficient to the battery internal variable estimator; and
estimating the solid phase potentials by utilizing the updated model coefficient and the battery current information,wherein the method is implemented on a processing device.
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Abstract
The present teachings are directed toward a machine implemented method for estimating the solid phase potentials of either positive or negative electrode of a battery. The machine implemented method includes providing battery voltage information and an estimated solid phase potential to a model coefficient updater to update a model coefficient. Battery current information is provided to a battery internal variable estimator along with the updated model coefficient so that the solid phase potentials can be determined. A multi-layer model can be utilized to determine the ion density of the electrodes. The method can be implemented on a processing device, and is particularly applicable to Li-ion batteries.
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Citations
19 Claims
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1. A machine implemented method for estimating the solid phase potentials of the electrodes of a battery, the machine implemented method comprising:
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providing battery voltage information and an estimated solid phase potential to a model coefficient updater; updating a model coefficient by utilizing the battery voltage information and estimated solid phase potential; providing battery current information to a battery internal variable estimator; providing the updated model coefficient to the battery internal variable estimator; and estimating the solid phase potentials by utilizing the updated model coefficient and the battery current information, wherein the method is implemented on a processing device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A battery charging device for a battery comprising:
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a battery; a battery charger for charging the battery; and a charging control system comprising a machine implemented method for determining the solid phase potential of either positive or negative electrode of the battery, the machine implemented method comprising; providing battery voltage information and an estimated solid phase potential to a model coefficient updater; updating a model coefficient by utilizing the battery voltage information and estimated solid phase potential; providing battery current information to a battery internal variable estimator; providing the updated model coefficient to the battery internal variable estimator; and estimating the solid phase potentials by utilizing the updated model coefficient and the battery current information, wherein the method is implemented on a processing device. - View Dependent Claims (16, 17, 18)
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19. A battery charging device comprising:
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a processing device comprising a model coefficient updater and a battery internal variable estimator, a battery voltage sensor providing battery voltage information; a battery current sensor providing battery current information, and wherein the solid phase potentials of the electrodes of the battery are determined by a method comprising; providing battery voltage information and an estimated solid phase potential to the model coefficient updater of the processor; updating a model coefficient by utilizing the battery voltage information and estimated solid phase potential; providing battery current information to the battery internal variable estimator of the processor; providing the updated model coefficient to the battery internal variable estimator of the processor; and estimating the solid phase potentials by utilizing the updated model coefficient and the battery current information, wherein the method is implemented on the processing device.
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Specification