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US 9,753,093 B2Granted
Vehicle and method of diagnosing battery condition of same
AssigneeFord Global Technologies, LLC
InventorsAllan Roy Gale, Bruce Carvell Blakemore, Michael W. Degner, Paul Theodore Momcilovich
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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.
Claims5
A vehicle comprising:
- 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.
2 more elements
A method comprising:
- 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.
Dependencies are inferred from the claim text.