Method of generating load variation for detecting wireless power receiving unit in wireless charging, and wireless power receiving unit
AssigneeSamsung Electronics Co., Ltd.
InventorsKyung-Woo Lee, Kang-Ho Byun, Chong-Min Lee, Hee-Won Jung, Min-Cheol Ha, Seung-Woo Han
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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.
Claims15
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.
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.
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.
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.
Dependencies are inferred from the claim text.