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US 10,541,560 B2Granted
Power control method and device in wireless power transmission system
AssigneeGE Hybrid Technologies, LLC
InventorsChun Kil Jung, Soon Sang Kwon
Life of this patent
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Abstract
The present invention relates to a power control method and device in a wireless power transmission system. According to the present invention, even if a CEP packet is not transmitted from a wireless power reception device over a certain period of time, a wireless power transmission device may additionally determine whether the wireless power reception device is located in a charging area and sustainably perform charging.
Claims20
A wireless power transmission device comprising:
- at least one primary coil configured to transmit wireless power to a wireless power reception device;
- a communication unit configured to receive a control error packet (CEP) from the wireless power reception device via the primary coil;
- and
- a control unit configured to control a transmission of the wireless power from the primary coil to the wireless power reception device based on the CEP.
1 more element
A wireless power reception device comprising:
- at least one secondary coil configured to receive wireless power from a wireless power transmission device, the wireless power initially associated with a first operation point of the wireless power transmission device;
- and
- a control unit configured to transmit a control error packet (CEP) to the wireless power transmission device via the secondary coil, wherein the wireless power subsequently is associated with a second operation point based on the CEP.
A method performed by a wireless power reception device, the method comprising:
- receiving wireless power from a wireless power transmission device via at least one secondary coil of the wireless power reception device, the wireless power initially associated with a first operation point of the wireless power transmission device;
- and
- transmitting a control error packet (CEP) to the wireless power transmission device via the secondary coil, wherein the wireless power subsequently is associated with a second operation point based on the CEP.
Dependencies are inferred from the claim text.