Automotive battery status monitor
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United States of America Patent
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-
Jan 25, 1994
Issued Date -
N/A
app pub date -
Jan 13, 1992
filing date -
Oct 14, 1988
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vehicle storage battery is monitored to determine battery capacity, state of charge and certain fault conditions. The ambient temperature, battery voltage alternator/regulator output voltage and current to and from the battery are continuously measured. Current voltage (I-V) data is analyzed to determine the internal resistance and polarization of the battery. A determination is made regarding state of charge and fault conditions produced by corroded terminals and low electrolyte level. The low temperature starting limit is determined by comparing the battery's power output capability with starting power requirements of the vehicle. Data produced by the comparison are indicated on the dashboard of the vehicle.
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