US 2020/0091777 A1 · RECONFIGURABLE ELECTROMAGNETIC WAVE SHIELDING FILTER, WIRELESS CHARGER FOR VEHICLE HAVING THE SAME, AND CONTROL METHOD THEREOF

Abstract

A reconfigurable electromagnetic wave shielding filter is provided in a wireless charger for a vehicle and capable of selectively shielding an electromagnetic wave (EMI noise) that interferes with an AM broadcast band, an electromagnetic wave that interferes with a FM broadcast band, and an electromagnetic wave that interferes with a DMB broadcast band. A wireless charger for a vehicle includes the reconfigurable electromagnetic wave shielding filter and a control method thereof, in which broadcast information being received by the user is collected, and then, an electromagnetic wave that interferes with a broadcast band corresponding to the collected broadcast information is shielded, thereby to allow the user to listen to the broadcast without noise.

Claims19

Dependent claims

A reconfigurable electromagnetic wave shielding filter comprising:

a loop-shaped shielding coil;
a first capacitor having a first end connected to a start point of the shielding coil and a second end connected to an end point of the shielding coil;
a second capacitor having a first end connected to the start point of the shielding coil and a second end connected to a first point and a second point of the shielding coil, wherein the first point and the second point are located between the start point and the end point, wherein the first point is located between the start point and the second point, wherein the second point is located between the first point and the end point;
a first switch configured to switch a current flowing through the shielding coil to flow to either the second end of the first capacitor or the second end of the second capacitor;
and
a second switch configured to switch the current flowing through the shielding coil to flow to either the second end of the second capacitor or the first switch.

3 more elements

A wireless charger for a vehicle having a reconfigurable electromagnetic wave shielding filter, the wireless charger comprising:

a collecting unit configured to collect broadcast information being received by the vehicle;
a voltage applying unit configured to apply a voltage to the reconfigurable electromagnetic wave shielding filter;
and
a controlling unit configured to control the voltage applying unit to generate a pattern corresponding to the broadcast information collected by the information collecting unit.

1 more element

A method for controlling a reconfigurable electromagnetic wave shielding filter, the method comprising:

collecting broadcast information being received by a vehicle;
and
controlling the reconfigurable electromagnetic wave shielding filter to generate a pattern corresponding to the collected broadcast information.

Dependencies are inferred from the claim text.

Reconfigurable electromagnetic wave shielding filter, wireless charger for vehicle having the same, and control method thereof

Life of this patent

Reconfigurable electromagnetic wave shielding filter, wireless charger for vehicle having the same, and control method thereof

Life of this patent

Abstract

Claims19