Method, apparatus, and system for power source failure prediction
First Claim
1. An apparatus, comprising:
- two or more electrical lines positioned on either side of a direct current power source to determine a voltage across the direct current power source in a computing platform; and
a power source management unit coupled to the two or more electrical lines to measure the voltage, the power source management unit including an analog front end coupled to the voltage measurement module, wherein the analog front end is coupled to a charge transistor to drive the charge transistor to charge the direct current power source, and the analog front end is coupled to a discharge transistor to drive the discharge transistor to facilitate operation of the computing platform, wherein the power source management unit further determines an actual rate of change in equivalent resistance of the direct current power source from the measured voltage and predicts failure of the direct current power source based on the actual rate of change.
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Accused Products
Abstract
Some embodiments of a method, apparatus, and system for power source failure prediction are described. According to some embodiments, the system may include, among other things, a display device to draw power from a direct current power source, two or more electrical lines positioned on either side of the direct current power source to determine a voltage across the direct current power source, and a power source management unit coupled to the two or more electrical lines to measure the voltage. In some embodiments, a cell monitoring unit may be coupled to the two or more electrical lines to measure the voltage for the power source management unit, where the cell monitoring unit is capable of converting the measured voltage to a digital signal, measuring the rate of change of the voltage over a period of time, and providing information to the power source management unit. Other embodiments are described.
12 Citations
26 Claims
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1. An apparatus, comprising:
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two or more electrical lines positioned on either side of a direct current power source to determine a voltage across the direct current power source in a computing platform; and a power source management unit coupled to the two or more electrical lines to measure the voltage, the power source management unit including an analog front end coupled to the voltage measurement module, wherein the analog front end is coupled to a charge transistor to drive the charge transistor to charge the direct current power source, and the analog front end is coupled to a discharge transistor to drive the discharge transistor to facilitate operation of the computing platform, wherein the power source management unit further determines an actual rate of change in equivalent resistance of the direct current power source from the measured voltage and predicts failure of the direct current power source based on the actual rate of change. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system, comprising:
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a display device to draw power from a direct current power source of a computing platform; two or more electrical lines positioned on either side of the direct current power source to determine a voltage across the direct current power source; and a power source management unit coupled to the two or more electrical lines to measure the voltage, the power source management unit including an analog front end coupled to the voltage measurement module, wherein the analog front end is coupled to a charge transistor to drive the charge transistor to charge the direct current power source, and the analog front end is coupled to a discharge transistor to drive the discharge transistor to facilitate operation of the computing platform, wherein the power source management unit further determines an actual rate of change in equivalent resistance of the direct current power source from the measured voltage and predicts failure of the direct current power source based on the actual rate of change. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method, comprising:
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monitoring a voltage of a direct current power source in a power loading condition over a period of time; determining an actual rate of change in equivalent resistance of the direct current power source from more than one measured voltage; comparing the actual rate of change with a threshold rate of change; and issuing an alert when the actual rate of change approaches the threshold rate of change. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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Specification