IN-VEHICLE BATTERY MONITOR
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Accused Products
Abstract
An apparatus and a method of monitoring a battery in an automotive vehicle are provided. An output is provided which can be a relative output as a function of minimum and maximum parameters of the battery.
5 Citations
42 Claims
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1-32. -32. (canceled)
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33. A battery monitor for monitoring a battery of an automotive vehicle, comprising:
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a voltage sensor configured to monitor a voltage across the battery; a current sensor configured to monitor an electrical current through the battery; an analog to digital converter configured to convert sensed current from the current sensor to a digital value; a constant offset configured to reduce a quiescent current draw from the sensed current prior to digitizing the sensed current by the analog to digital converter; and a processor configured to measure a parameter of the battery as a function of sensed current and sensed voltage. - View Dependent Claims (34, 35, 36, 37, 38, 39)
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40. A battery monitor for monitoring a battery of an automotive vehicle, comprising:
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a current sensor configured to monitor an electrical current through the battery; a communication link configured to couple to a data bus of the vehicle; and a processor configured to receive a signal from the data bus indicative of operation of an electrical component of the vehicle and responsively wake up from a sleep mode to monitor the electrical current through the battery using the current sensor. - View Dependent Claims (41, 42)
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Specification