Wireless power transmission apparatus and method and wireless power reception apparatus
First Claim
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1. A wireless power transmission apparatus comprising:
- a measurer configured to measure a first value of a current flowing in a source resonator;
a communication unit configured to receive a second value of a charging current of a battery from a wireless power reception apparatus; and
a power controller configured to control an amount of power to be transmitted by the source resonator based on an internal offset and a power transmission efficiency offset, wherein the internal offset determined based on the first value and a reference current value that is distinct from the second value and the power transmission efficiency offset is determined based on the second value and the reference current value.
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Abstract
A wireless power transmission apparatus includes a measurer configured to measure a value of a current flowing in a source resonator, a communication unit configured to receive a value of a charging current of a battery from a wireless power reception apparatus, and a power controller configured to control an amount of power to be transmitted by the source resonator based on either one or both of the value of the current measured by the measurer and the value of the charging current received by the communication unit. The value of the charging current of the battery varies as the battery is charged.
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Citations
19 Claims
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1. A wireless power transmission apparatus comprising:
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a measurer configured to measure a first value of a current flowing in a source resonator; a communication unit configured to receive a second value of a charging current of a battery from a wireless power reception apparatus; and a power controller configured to control an amount of power to be transmitted by the source resonator based on an internal offset and a power transmission efficiency offset, wherein the internal offset determined based on the first value and a reference current value that is distinct from the second value and the power transmission efficiency offset is determined based on the second value and the reference current value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless power reception apparatus comprising:
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a rectifier configured to rectify an alternating current (AC) power received from a wireless power transmission apparatus by a target resonator through a mutual resonance with a source resonator to a direct current (DC) power; a measurer configured to measure a first value of a current flowing in the target resonator; and a communication unit configured to transmit the first value to the wireless power transmission apparatus, wherein the AC power is controlled by the wireless power transmission apparatus based on a power transmission efficiency offset and an internal offset, the power transmission efficiency offset determined based on the first value and the reference current value and the internal offset determined based on the reference current value and a second value which is a value of a current flowing in a source resonator. - View Dependent Claims (11, 12, 13)
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14. A wireless power transmission method comprising:
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measuring a first value of a current flowing in a source resonator; receiving a second value of a charging current of a battery from a wireless power reception apparatus; and controlling an amount of power to be transmitted by the source resonator based on an internal offset and a power transmission efficiency offset, wherein the internal offset determined based on the first value and a reference current value that is distinct from the second value and the power transmission efficiency offset is determined based on the second value and the reference current value. - View Dependent Claims (15, 16, 17, 18)
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19. A wireless power transmission apparatus comprising:
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a measurer configured to measure a first information indicative of an amount of power being transmitted by a source resonator; a communication unit configured to receive, from a wireless power reception apparatus, measured a second information indicative of an amount of power being consumed by a load powered by the wireless reception apparatus; and a controller configured to control an amount of power to be transmitted by the source resonator based on an internal offset and a power transmission efficiency offset, wherein the internal offset determined based on the first value and a reference current value that is distinct from the second value and the power transmission efficiency offset is determined based on the second value and the reference current value.
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Specification