Electric charging apparatus and failure determination method therefor

摘要

An electric charging apparatus and a failure determination method therefor are provided. In the electric charging apparatus, a relay allows a current to flow inside the electric charging apparatus by switching of a switch. An acceleration sensor detects a vibration of the relay and generating an acceleration sensing signal. A control unit receives the acceleration sensing signal from the acceleration sensor and detects failure of the electric charging apparatus.

主权项

1. An electric charging apparatus comprising:
a relay allowing a current to flow inside the electric charging apparatus by switching of a switch in the relay; an acceleration sensor detecting a vibration of the relay and generating an acceleration sensing signal; and a control unit analyzing a waveform of the acceleration sensing signal from the acceleration sensor and detecting failure of the electric charging apparatus, wherein the waveform of the acceleration sensing signal sequentially comprises a small vibration period, a large vibration period while a state of the switch is changed, and the control unit detects failure of the electric charging apparatus based on a time duration between a peak value in the small vibration period and a peak value in the large vibration period.