Method and apparatus for detecting load fluctuation of wireless power transmission
First Claim
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1. A wireless power transmitter comprising:
- a resonator configured to wirelessly transmit, to a target device, an output power;
a power detector configured to detect a current of the output power; and
a controller configured todetect a change in the current,detect a target load based on the change in the current,receive, from the target device, information on a received power, anddetermine a charging mode of the target device based on the information;
wherein an operation mode of the wireless power transmitter is selected from a plurality of operation modes comprising a standby mode, a connection mode, and a charging control mode,wherein the charging mode is selected from a plurality of charging modes comprising a constant current (CC) mode and a constant voltage (CV) mode, andwherein the controller receives the information in the charging control mode, and adjusts the output power based on the charging mode.
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Abstract
A method and apparatus to detect load fluctuation of a wireless power transmission are provided. A wireless power transmitter includes a resonator configured to wirelessly transmit, to a target device, an output power. The wireless power transmitter further includes a power detector configured to detect a current of the output power. The wireless power transmitter further includes a controller configured to detect a change in the current, and to detect a target load based on the change in the current. The target load includes a load of which the output power is applied thereto.
7 Citations
18 Claims
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1. A wireless power transmitter comprising:
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a resonator configured to wirelessly transmit, to a target device, an output power; a power detector configured to detect a current of the output power; and a controller configured to detect a change in the current, detect a target load based on the change in the current, receive, from the target device, information on a received power, and determine a charging mode of the target device based on the information; wherein an operation mode of the wireless power transmitter is selected from a plurality of operation modes comprising a standby mode, a connection mode, and a charging control mode, wherein the charging mode is selected from a plurality of charging modes comprising a constant current (CC) mode and a constant voltage (CV) mode, and wherein the controller receives the information in the charging control mode, and adjusts the output power based on the charging mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of detecting a load in a wireless power transmission, comprising:
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wirelessly transmitting, to a target device, an output power; detecting a current of the output power; detecting a change in the current; detecting a target load based on the change in the current; receiving, from the target device, information on a received power; determining a charging mode of the target device based on the information; and wherein an operation mode of the wireless power transmitter is selected from a plurality of operation modes comprising a standby mode, a connection mode, and a charging control mode, wherein the charging mode is selected from a plurality of charging modes comprising a constant current (CC) mode and a constant voltage (CV) mode, and wherein the controller receives the information in the charging control mode, and adjusts the output power based on the charging mode. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification