MONITORING A BATTERY IN AN ELECTRONIC DEVICE
First Claim
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1. A method for monitoring a battery in an electronic device, comprising:
- applying a discharge current pulse to the battery;
determining a voltage change of the battery due to the discharge current pulse;
determining an impedance based on the voltage change and the discharge current pulse; and
selectively generating an alert based on the impedance.
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Abstract
A method and apparatus are described for monitoring a battery in an electronic device. In the described embodiments, a discharge current pulse is applied to a battery and the voltage change of the battery due to the discharge current pulse is determined. The impedance of the battery is then determined based on the voltage change and the discharge current pulse. An alert is then selectively generated based on the impedance.
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Citations
20 Claims
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1. A method for monitoring a battery in an electronic device, comprising:
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applying a discharge current pulse to the battery; determining a voltage change of the battery due to the discharge current pulse; determining an impedance based on the voltage change and the discharge current pulse; and selectively generating an alert based on the impedance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for monitoring a battery in an electronic device, comprising:
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an input/output subsystem coupled to the battery; and a processing subsystem coupled to and controlling the input/output subsystem and configured to use the input/output subsystem to apply a predetermined number of discharge current pulses to the battery during a predetermined time period, wherein for each of the predetermined number of discharge current pulses, the processing subsystem, determines a voltage change of the battery due to the discharge current pulse; determines an impedance based on the voltage change and the discharge current pulse; and selectively generates an alert based on one or more of the predetermined number of determined impedances. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A non-transitory computer-readable storage medium containing instructions that, when executed by a processing subsystem in a battery management unit, cause the battery management unit to perform a method for monitoring a battery in an electronic device, the method comprising:
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applying a discharge current pulse to the battery; determining a voltage change of the battery due to the discharge current pulse; determining an impedance based on the voltage change and the discharge current pulse; and selectively generating an alert based on the impedance. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification