APPARATUS AND METHOD FOR DETECTING FOREIGN OBJECT IN WIRELESS POWER TRANSMITTING SYSTEM
First Claim
Patent Images
1. A method of detecting a foreign object using a wireless power receiving apparatus, the method comprising:
- attempting to detect a foreign object during charging; and
attempting to detect a foreign object using a temperature sensor if the foreign object is not detected by the attempt to detect the foreign object during charging.
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus and method for detecting a foreign object in a wireless power transmitting system are provided. In a case in which a foreign object is not detected prior to charging, an attempt to detect a foreign object detection during charging is performed, and when a foreign object is not detected while a power signal is being received, power is limited based on a temperature sensor.
-
Citations
16 Claims
-
1. A method of detecting a foreign object using a wireless power receiving apparatus, the method comprising:
-
attempting to detect a foreign object during charging; and attempting to detect a foreign object using a temperature sensor if the foreign object is not detected by the attempt to detect the foreign object during charging. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method of detecting a foreign object using a wireless power receiving apparatus, the method comprising:
-
attempting to detect a foreign object prior to initial charging; and attempting to detect a foreign object using a temperature sensor if the foreign object is not detected by the attempt to detect a foreign object prior to initial charging.
-
-
11. A wireless power receiving apparatus comprising:
-
a secondary core block; a rectifying unit connected to the secondary core block; a control unit; and a temperature sensor, wherein the rectifying unit performs full-wave rectification on an alternating current (AC) waveform generated by the secondary core block and provides power to the control unit and an external load, wherein the control unit measures an initial voltage of an output terminal connected to the external load, and attempts to detect a foreign object if the initial voltage is within a reference voltage range, and wherein if a foreign object is not detected before charging starts, the control unit attempts to detect a foreign object during charging, and if the foreign object is not detected during the attempt to detect a foreign object detection during charging, the control unit attempts to detect a foreign object using the temperature sensor. - View Dependent Claims (12, 13, 14, 15, 16)
-
Specification