NON-CONTACT POWER TRANSMISSION DEVICE
First Claim
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1. A contactless power transmission device comprising:
- a power transmitting device; and
a power receiving device,whereinthe power receiving device is activated when receiving verification power transmitted in a contactless manner from the power transmitting device using electromagnetic coupling between the transmission device and the power receiving device,after the power receiving device is activated, the power transmitting device transmits normal power to the power receiving device when verification of the power receiving device is successfully performed through communication using the electromagnetic coupling,the power receiving device transmits to the power transmitting device an electric signal indicating activation immediately after being activated upon receipt of the verification power, andreception of the electric signal triggers the power transmitting device to start a verification process on the power receiving device and perform a detection process for a metal foreign object.
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Abstract
A portable terminal is activated when receiving verification power transmitted in a contactless manner from a charger using electromagnetic coupling between the charger and the portable terminal. The portable terminal sends an electrical signal (wakeup frame) indicating activation immediately after being activated to the charger. Reception of the wakeup frame triggers the power transmitting device to start a verification process on the power receiving device and perform a detection process for a metal foreign object. After authentication is established, the charger transmits normal power to the portable terminal.
58 Citations
6 Claims
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1. A contactless power transmission device comprising:
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a power transmitting device; and a power receiving device, wherein the power receiving device is activated when receiving verification power transmitted in a contactless manner from the power transmitting device using electromagnetic coupling between the transmission device and the power receiving device, after the power receiving device is activated, the power transmitting device transmits normal power to the power receiving device when verification of the power receiving device is successfully performed through communication using the electromagnetic coupling, the power receiving device transmits to the power transmitting device an electric signal indicating activation immediately after being activated upon receipt of the verification power, and reception of the electric signal triggers the power transmitting device to start a verification process on the power receiving device and perform a detection process for a metal foreign object. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification