Method for controlling power in a wireless power transmission apparatus and a wireless power transmission apparatus
First Claim
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1. A method performed by a transmission controller in a wireless power transmission apparatus, the method comprising:
- receiving a first direct current voltage from an adaptor connected to the wireless power transmission apparatus by at least a plus line and a ground line;
transmitting a wireless power signal to a wireless power receiving apparatus, if the wireless power receiving apparatus is detected, by using at least one transmission coil, the wireless power signal based on the first direct current voltage received from the adaptor;
determining, based on a signal from the wireless power receiving apparatus, status information indicating a level of charged power in a battery of the wireless power receiving apparatus;
transmitting a voltage change communication signal to the adaptor based on the status information, wherein the voltage change communication signal comprises a power up signal or a power down signal for causing the adapter to adjust a level of direct current voltage provided by the adapter to the wireless power transmission apparatus via the plus line in response to the level of charged power in the battery of the wireless power receiving apparatus;
receiving, from the adaptor, a second direct current voltage, wherein the second direct current voltage is based on the voltage change communication signal; and
transmitting the wireless power signal to the wireless power receiving apparatus based on the second direct current voltage received from the adaptor.
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Abstract
A power control method for a wireless power transmission assembly, and the wireless power transmission assembly. The method includes: outputting a direct current voltage to a wireless power transmission apparatus, the direct current voltage generated from an alternating current power source in an adaptor; and changing the level of the direct current voltage in the adaptor based on a voltage change communication signal if the wireless power transmission apparatus transmits the voltage change communication signal to the adaptor.
9 Citations
11 Claims
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1. A method performed by a transmission controller in a wireless power transmission apparatus, the method comprising:
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receiving a first direct current voltage from an adaptor connected to the wireless power transmission apparatus by at least a plus line and a ground line; transmitting a wireless power signal to a wireless power receiving apparatus, if the wireless power receiving apparatus is detected, by using at least one transmission coil, the wireless power signal based on the first direct current voltage received from the adaptor; determining, based on a signal from the wireless power receiving apparatus, status information indicating a level of charged power in a battery of the wireless power receiving apparatus; transmitting a voltage change communication signal to the adaptor based on the status information, wherein the voltage change communication signal comprises a power up signal or a power down signal for causing the adapter to adjust a level of direct current voltage provided by the adapter to the wireless power transmission apparatus via the plus line in response to the level of charged power in the battery of the wireless power receiving apparatus; receiving, from the adaptor, a second direct current voltage, wherein the second direct current voltage is based on the voltage change communication signal; and transmitting the wireless power signal to the wireless power receiving apparatus based on the second direct current voltage received from the adaptor. - View Dependent Claims (2, 3, 4, 5)
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6. A wireless power transmission apparatus, comprising:
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circuitry configured to receive a first direct current voltage from an adaptor connected to the wireless power transmission apparatus by at least a plus line and a ground line; at least one transmission coil configured to transmit a wireless power signal to a wireless power receiving apparatus, if the wireless power receiving apparatus is detected, the wireless power signal based on the first direct current voltage received from the adaptor; a converter configured to supply a power to the at least one transmission coil; a driver configured to control operation of the converter; a transmission controller configured to; determine, based on a signal from the wireless power receiving apparatus, status information indicating a level of charged power in a battery of the wireless power receiving apparatus, transmit a voltage change communication signal to the adaptor based on the status information, wherein the voltage change communication signal comprises a power up signal or a power down signal for causing the adapter to adjust a level of direct current voltage provided by the adapter to the wireless power transmission apparatus via the plus line in response to the level of charged power in the battery of the wireless power receiving apparatus, and receive, from the adaptor, a second direct current voltage, wherein the second direct current voltage is based on the voltage change communication signal; and the at least one transmission coil configured to transmit the wireless power signal to the wireless power receiving apparatus based on the second direct current voltage received from the adaptor. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification