VEHICLE DOOR OPENING/CLOSING DEVICE AND SYSTEM

Provided according to an embodiment is a vehicle door opening/closing device comprising: a communication unit which communicates with a portable device including a digital key; a control unit which outputs an opening/closing control signal for controlling opening/closing of a door of a vehicle by using a signal received from the portable device through the communication unit; a door opening/closing module which locks or unlocks the door of the vehicle according to the opening/closing control signal; and a wireless charging module which, when a battery for supplying power to the vehicle is discharged, wirelessly receives power from the portable device and supplies power for opening/closing the door of the vehicle.