In-vehicle battery monitor
AssigneeMidtronics, Inc.
InventorKevin I. Bertness
Life of this patent
Estimating the term…
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.
Claims130
A method of monitoring a battery in an automotive vehicle having an engine, comprising:
- setting a stored battery parameter value to an initial value;
- measuring a first parameter of the battery;
- changing the stored battery parameter value as a function of the measured first parameter;
- measuring a second parameter of the battery during or following a period when the battery is charging;
- changing the stored battery parameter value as a function of the measured second parameter;
- and
- providing an output related to a condition of the battery as a function of the stored battery parameter value.
A method of monitoring a battery in an automotive vehicle, comprising:
- retrieving a battery parameter minimum threshold value from a memory;
- obtaining a measured battery parameter value;
- retrieving a battery parameter maximum threshold value from the memory;
- and
- determining a relative battery condition as a ratio between two quantities and as a function of the battery parameter minimum threshold value, the measured battery parameter value and the maximum threshold battery parameter value.
An electronic battery monitor for use in an automotive vehicle having an engine, comprising:
- means for setting a stored battery parameter value to an initial value;
- means for measuring a first parameter of the battery;
- means for changing the stored battery parameter value as a function of the measured first parameter;
- means for measuring a second parameter of the battery during or following a period when the battery is charging;
- means for changing the stored battery parameter value as a function of the measured second parameter;
- and
- for providing an output related to a condition of the battery as a function of the stored battery parameter value.
An electronic battery monitor for use in an automotive vehicle, comprising:
- means for retrieving a battery parameter minimum threshold value from a memory;
- means for obtaining a measured battery parameter value;
- means for retrieving a battery parameter maximum threshold value from the memory;
- and
- means for determining a relative battery condition as a ratio between two quantities and as a function of the battery parameter minimum threshold value, the measured battery parameter value and the maximum threshold battery parameter maximum threshold value.
A battery monitor for use in monitoring a battery of an automotive vehicle, comprising:
- a voltage sensor configured to measure a voltage across the battery;
- a current sensor configured to measure a current through the battery;
- a memory configured to store an initial value of a stored battery parameter;
- and
- a process configured to measure a first parameter of the battery during a first period as a function of sensed voltage and sensed current, respectively, change the stored battery parameter, measure a second parameter during a second period as a function of sensed voltage and sensed current, responsively change the stored battery parameter and determine a condition of the battery as a function of the stored battery parameter.
An electronic battery monitor configured to monitor a battery of an automotive vehicle, comprising:
- a memory configured to contain a battery parameter minimum threshold value, a battery parameter maximum threshold value, and a measured battery parameter value;
- battery parameter measurement circuitry configured to couple to the battery;
- and
- a processor configured to determine a relative condition of the battery as a ratio between two quantities and as a function of the battery parameter minimum threshold value, the battery parameter maximum threshold value and the measured battery parameter value.
Dependencies are inferred from the claim text.