Vehicle and method of diagnosing battery condition of same
First Claim
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1. A vehicle comprising:
- a battery disposed within the vehicle; and
a battery charger disposed within the vehicle and configured toreceive power from a wall outlet and transfer the power to the battery to charge the battery, andwhile operating to charge the battery, identify a degradation condition of the battery defined by a battery cell capacitance, that incorporates electrical and active material activation energy requirements, being less than a predefined range of capacitance values, a ratio of battery amp-hours out to battery amp-hours in falling within a predefined range of ratio values, and a total battery amp-hours stored falling within a predefined range of amp-hour values.
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Abstract
A method for diagnosing a battery may include applying a generally constant current to the battery for a period of time, measuring a response voltage of the battery to the applied current, determining battery impedance parameters based on at least one of the applied current, period of time, and response voltage, and determining a degradation condition of the battery based on the battery impedance parameters.
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Citations
5 Claims
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1. A vehicle comprising:
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a battery disposed within the vehicle; and a battery charger disposed within the vehicle and configured to receive power from a wall outlet and transfer the power to the battery to charge the battery, and while operating to charge the battery, identify a degradation condition of the battery defined by a battery cell capacitance, that incorporates electrical and active material activation energy requirements, being less than a predefined range of capacitance values, a ratio of battery amp-hours out to battery amp-hours in falling within a predefined range of ratio values, and a total battery amp-hours stored falling within a predefined range of amp-hour values. - View Dependent Claims (2)
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3. A method comprising:
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while charging a battery, detecting a degradation of a battery responsive to a cell capacitance, that incorporates electrical and active material activation energy requirements, being below a predefined range of capacitance values, a ratio of battery amp-hours out to battery amp-hours in falling within a predefined range of ratio values, and a total battery amp-hours stored falling within a predefined range of amp-hour values; and altering the charging responsive to the detecting. - View Dependent Claims (4, 5)
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Specification