Detecting device, power receiving device, contactless power transmission system, and detecting method
First Claim
Patent Images
1. A power receiving device, comprising:
- a power receiving circuitry configured to receive an electric power via a resonance circuitry, the resonance circuitry being configured to receive the electric power wirelessly from a power transmitting apparatus based on a first magnetic induction between a first coil electrically connected to a power transmitting circuitry included in the power transmitting apparatus and a second coil included in the resonance circuitry;
a memory configured to store a reference resonance frequency and a reference quality factor related to the power receiving device; and
a control circuitry configured to;
charge a storage element with the electric power received by the power receiving circuitry,retrieve the reference resonance frequency and the reference quality factor from the memory, using the electric power charged in the storage element, andsend the reference resonance frequency and the reference quality factor to the power transmitting apparatus.
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Abstract
Disclosed herein is a detecting device including a coil electromagnetically coupled to the external, a resonant circuit that includes at least the coil, and a detecting section that superimposes a measurement signal for measuring the Q-factor of the resonant circuit on a power transmission signal transmitted to the coil in a contactless manner and removes the power transmission signal from an alternating-current signal obtained by superimposing the measurement signal on the power transmission signal. The detecting section measures the Q-factor by using the alternating-current signal from which the power transmission signal is removed.
64 Citations
18 Claims
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1. A power receiving device, comprising:
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a power receiving circuitry configured to receive an electric power via a resonance circuitry, the resonance circuitry being configured to receive the electric power wirelessly from a power transmitting apparatus based on a first magnetic induction between a first coil electrically connected to a power transmitting circuitry included in the power transmitting apparatus and a second coil included in the resonance circuitry; a memory configured to store a reference resonance frequency and a reference quality factor related to the power receiving device; and a control circuitry configured to; charge a storage element with the electric power received by the power receiving circuitry, retrieve the reference resonance frequency and the reference quality factor from the memory, using the electric power charged in the storage element, and send the reference resonance frequency and the reference quality factor to the power transmitting apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A power receiving apparatus, comprising:
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a resonance circuitry configured to receive an electric power wirelessly from a power transmitting apparatus based on a magnetic induction between a first coil electrically connected to a power transmitting circuitry included in the power transmitting apparatus and a second coil included in the resonance circuitry; a power receiving circuitry configured to receive the electric power from the resonance circuitry; a memory configured to store a reference resonance frequency and a reference quality factor related to the power receiving apparatus; and a control circuitry configured to; charge a storage element with the electric power received by the power receiving circuitry, retrieve the reference resonance frequency and the reference quality factor from the memory, using the electric power charged in the storage element, and send the reference resonance frequency and the reference quality factor to the power transmitting apparatus. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification