WIRELESS CHARGING DEVICE AND WARNING SIGNAL GENERATING METHOD THEREOF

A wireless charging device and a warning signal generating method are provided in this disclosure. The warning signal generating method includes: determining whether the smart key of the vehicle is in an operating mode according to a wireless unlock signal when a vehicle is turned off; determining whether a door of the vehicle is opened when the smart key is not in the operating mode; determining whether a portable electronic device is on a wireless charging base of the wireless charging device when the door is opened; and generating a warning signal when the portable electronic device is on the wireless charging base.