No point of contact charging system
AssigneeHanrim Postech Co., Ltd.
InventorKi-Young CHO
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a non-contact charging system. The non-contact charging system detects a portable terminal, a battery pack or a foreign object that is placed on the pad of a non-contact charger, and effectively monitors and controls its charging state through the detection, thus preventing such a foreign object placed on the pad from being heated by induction heating, and further causes anions to be generated during the charging of the portable terminal or the battery pack, thus sterilizing bacteria on a terminal and keeping ambient air thereof fresh.
Claims11
1-52. (canceled)
A charger which wirelessly charges an electronic device, comprising:
- a wireless charging pad comprising a rectification portion configured to rectify a power, and a coil portion configured to wirelessly transfer the power to an object for receiving wireless power;
- a current detection unit configured to detect an external object approaching the wireless charging pad, and to output a comparison value which compares a predetermined reference current with a changed current resulting from an approach of the external object to the wirelessly charging pad;
- and
- a processing unit configured to determine, using the comparison value, whether the external object is the object for receiving wireless power.
A method of detecting an external object at a wireless charging pad, comprising:
- detecting a changed current resulting from an approach of the external object to the wireless charging pad;
- obtaining an external object-presented current from the changed current;
- comparing a predetermined current with the external object-presented current;
- and
- determining whether the external object is an object capable of receiving wireless power from the wirelessly charging pad.
Dependencies are inferred from the claim text.