Method of generating load variation for detecting wireless power receiving unit in wireless charging, and wireless power receiving unit
First Claim
Patent Images
1. A method for detecting a wireless power receiver in a wireless power transmitter, the method comprising:
- transmitting a time set value that is set for checking cross connection to the wireless power receiver;
detecting a load variation of the wireless power receiver;
determining whether the time set value is coincident with a load variation perioddetermining that the wireless power receiver is cross-connected, if the time set value is not coincident with the load variation period; and
transmitting a power receiving unit (PRU) control signal with permission denied due to cross connection.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for generating a load variation for detecting a wireless power receiving unit in wireless charging is provided. The method includes maintaining a switch connected to a dummy load in an ON state by the wireless power receiving unit, receiving wireless power from a wireless power transmitting unit, and, upon receiving the wireless power, switching the switch connected to the dummy load to an OFF state.
65 Citations
15 Claims
-
1. A method for detecting a wireless power receiver in a wireless power transmitter, the method comprising:
-
transmitting a time set value that is set for checking cross connection to the wireless power receiver; detecting a load variation of the wireless power receiver; determining whether the time set value is coincident with a load variation period determining that the wireless power receiver is cross-connected, if the time set value is not coincident with the load variation period; and transmitting a power receiving unit (PRU) control signal with permission denied due to cross connection. - View Dependent Claims (2)
-
-
3. A wireless power transmitter comprising:
-
a communication module configured to transmit a time set value that is set for checking cross connection to the wireless power receiver; and a controller configured to; detect a load variation of the wireless power receiver, determine whether the time set value is coincident with a load variation period determine that the wireless power receiver is cross-connected, if the time set value is not coincident with the load variation period; and transmit, through the communication module, a power receiving unit (PRU) control signal with permission denied due to cross connection. - View Dependent Claims (4)
-
-
5. A method of generating a load variation in a wireless power receiver, the method comprising:
-
receiving, by a power receiver, power from a wireless power transmitter; receiving, from the wireless power transmitter, a time set value that is set for checking cross connection; in response to the receiving the time set value, generating a load variation by converting a load status from a first load status to a second load status; and maintaining the second load status for a time corresponding to the received time set value. - View Dependent Claims (6, 7, 8, 9)
-
-
10. A wireless power receiver comprising:
-
a power receiver configured to receive power from a wireless power transmitter; a communication module configured to receive, from the wireless power transmitter, a time set value that is set for checking cross connection; and a controller configured to; generate a load variation by switching from a first load status to a second load status, and maintain the second load status for a time corresponding to the received time set value. - View Dependent Claims (11, 12, 13, 14, 15)
-
Specification