Method of diagnosing fault by using impedance of output terminal of power supply device for environmentally-friendly vehicle
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United States of America Patent
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Jan 9, 2018
Grant Date -
Aug 20, 2015
app pub date -
Dec 2, 2014
filing date -
Feb 19, 2014
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Abstract
A method of diagnosing a fault by using impedance of an output terminal of a power supply device for an environmentally-friendly vehicle is provided. The method estimates impedance of the output terminal of the power supply device and diagnoses a fault by using the estimated impedance, thereby preventing an auxiliary battery from being discharged. Whether or not the fault is generated according to the impedance when the estimated impedance exceeds a reference value is determined.
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