Determining remaining life fraction for battery networks in-situ
First Claim
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1. A computer-implemented method for determining a remaining life fraction for a network of battery units, comprising:
- receiving information describing an application for the network of battery units;
receiving historical impedance data concerning the network of battery units;
measuring an instantaneous impedance response to a perturbation signal applied to each of the battery units while in operation for the application;
determining a mode and estimating a severity of a failure for at least one individual battery unit from a change in impedance characteristics between historical and instantaneous impedance; and
predicting a remaining life fraction for the network of battery units based on the mode and the severity of failure of the at least one individual battery unit.
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Abstract
Determination of a remaining life fraction for a network of batteries during use in an electrical circuit is disclosed. A state of health of the battery network can be determined by measuring a change in impedance characteristics of the individual battery units and/or the battery network as a whole. More specifically, a mode and a severity of a failure can be determined for individual battery units.
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Citations
16 Claims
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1. A computer-implemented method for determining a remaining life fraction for a network of battery units, comprising:
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receiving information describing an application for the network of battery units; receiving historical impedance data concerning the network of battery units; measuring an instantaneous impedance response to a perturbation signal applied to each of the battery units while in operation for the application; determining a mode and estimating a severity of a failure for at least one individual battery unit from a change in impedance characteristics between historical and instantaneous impedance; and predicting a remaining life fraction for the network of battery units based on the mode and the severity of failure of the at least one individual battery unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A non-transitory computer-readable medium storing a computer product for a method for determining a life fraction for a network of battery units, the method comprising:
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receiving information describing an application for the network of battery units; receiving historical impedance data concerning the network of battery units; measuring an instantaneous impedance response to a perturbation signal applied to each of the battery units while in operation for the application; determining a mode and estimating a severity of a failure for at least one individual battery unit from a change in impedance characteristics between historical and instantaneous impedance; and predicting a remaining life fraction for the network of battery units based on the mode and the severity of failure of the at least one individual battery unit.
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16. A testing device to determine a life fraction for a network of battery units, comprising:
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a user interface module to receive information describing an application for the network of battery units; a data input to receive historical impedance data concerning the network of battery units; a signal input to measure an instantaneous impedance response to a perturbation signal applied to each of the battery units while in operation for the application; and an analyzing engine communicatively coupled to the user interface module, the data input and the signal input, the analyzing engine determining a mode and estimating a severity of a failure for at least one individual battery unit from a change in impedance characteristics between historical and instantaneous impedance response, and the analyzing engine predicting a remaining life fraction for the network of battery units based on the mode and the severity of failure of the at least one individual battery unit.
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Specification