SYSTEMS AND METHODS FOR DIAGNOSING BATTERY VOLTAGE MIS-REPORTING
First Claim
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1. A method for diagnosing a battery voltage misreporting, the method comprising:
- monitoring a voltage of a battery;
calculating battery charge state data by computing time derivatives of the monitored battery voltage across a range of battery voltages;
comparing the calculated battery charge state data to expected charge state data; and
generating an error message if the battery charge state data differs from the expected charge state data by a predetermined amount.
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Abstract
Systems and methods for diagnosing battery voltage misreporting is described. According to various embodiments, battery voltage may be monitored with respect to a state of charge and/or time. Based on this monitored information, battery charge state data may be generated by computing time derivatives of the monitored battery voltage across a voltage range. This battery charge state data may be compared with an expected set of charge state data if substantial differences exist, an error may be generated. Other embodiments are described and claimed.
12 Citations
24 Claims
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1. A method for diagnosing a battery voltage misreporting, the method comprising:
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monitoring a voltage of a battery; calculating battery charge state data by computing time derivatives of the monitored battery voltage across a range of battery voltages; comparing the calculated battery charge state data to expected charge state data; and generating an error message if the battery charge state data differs from the expected charge state data by a predetermined amount. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An system for diagnosing battery voltage misreporting, the apparatus comprising:
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a battery measurement circuit to measure the voltage of a battery to create battery voltage data; a calculation module to receive the battery voltage data and to calculate time derivatives from the battery voltage data across a range of battery voltages; and a diagnostic module to compare the calculated time derivatives to an expected set of time derivatives, the diagnostic module to generate an error message if the calculated time derivatives are substantially different than the expected set of time derivatives. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method for diagnosing a battery voltage misreporting, the method comprising:
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receiving battery data from a monitoring device; comparing the battery data to expected data; determining a misreporting error by the monitoring device if the battery data differs from the expected data by a predetermined amount; and generating an error signal indicating the misreporting error by the monitoring device. - View Dependent Claims (17, 18, 19, 20)
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21. An article of manufacture comprising a machine-readable medium storing instructions which when executed by a machine, cause the machine to:
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record battery voltage data including a voltage measurement and a timestamp; calculate battery charge state data by computing time derivatives of the battery voltage data across a range of battery voltages; compare the battery charge state data to expected charge state data; and generate an error message if the battery charge state data differs from the expected charge state data by a predetermined amount. - View Dependent Claims (22, 23, 24)
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Specification