Vehicle battery diagnostic device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jan 12, 1988
Issued Date -
N/A
app pub date -
Aug 7, 1986
filing date -
Jun 20, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vehicular charging system is provided with a microcomputer for performing a diagnostic routine on the vehicle battery and charging system. The battery charging condition and internal resistance are monitored to determine the service life of the battery and the state of the battery charging system. The internal resistance is calculated by taking the difference between the voltage when the battery terminals are in an open circuit condition and the voltage when the battery terminals are in a closed circuit state and dividing this difference by the battery current. Also included in the charge condition measurement is the measurement of the specific gravity of the battery.
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