DETECTING DEVICE, POWER RECEIVING DEVICE, CONTACTLESS POWER TRANSMISSION SYSTEM, AND DETECTING METHOD
First Claim
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1. A detecting device comprising:
- a coil configured to be electromagnetically coupled to an external;
a resonant circuit configured to include at least the coil; and
a detecting section configured to superimpose a measurement signal for measuring a Q-factor of the resonant circuit on a power transmission signal transmitted to the coil in a contactless manner and remove the power transmission signal from an alternating-current signal obtained by superimposing the measurement signal on the power transmission signal, the detecting section measuring the Q-factor by using the alternating-current signal from which the power transmission signal is removed.
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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.
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Citations
19 Claims
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1. A detecting device comprising:
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a coil configured to be electromagnetically coupled to an external; a resonant circuit configured to include at least the coil; and a detecting section configured to superimpose a measurement signal for measuring a Q-factor of the resonant circuit on a power transmission signal transmitted to the coil in a contactless manner and remove the power transmission signal from an alternating-current signal obtained by superimposing the measurement signal on the power transmission signal, the detecting section measuring the Q-factor by using the alternating-current signal from which the power transmission signal is removed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A power receiving device comprising:
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a coil configured to be used to receive power from an external; a resonant circuit configured to include at least the coil; and a detecting section configured to superimpose a measurement signal for measuring a Q-factor of the resonant circuit on a power transmission signal transmitted to the coil in a contactless manner and remove the power transmission signal from an alternating-current signal obtained by superimposing the measurement signal on the power transmission signal, the detecting section measuring the Q-factor by using the alternating-current signal from which the power transmission signal is removed. - View Dependent Claims (15)
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16. A contactless power transmission system comprising:
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a power transmitting device that wirelessly transmits power; and a power receiving device that receives power from the power transmitting device, wherein the power receiving device includes a coil configured to be used to receive power from an external, a resonant circuit configured to include at least the coil, and a detecting section configured to superimpose a measurement signal for measuring a Q-factor of the resonant circuit on a power transmission signal transmitted to the coil in a contactless manner and remove the power transmission signal from an alternating-current signal obtained by superimposing the measurement signal on the power transmission signal, the detecting section measuring the Q-factor by using the alternating-current signal from which the power transmission signal is removed. - View Dependent Claims (17)
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18. A detecting method comprising:
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superimposing a measurement signal for measuring a Q-factor of a resonant circuit including at least a coil on a power transmission signal transmitted to the coil in a contactless manner by a detecting section included in a detecting device; removing the power transmission signal from an alternating-current signal obtained by superimposing the measurement signal on the power transmission signal; and measuring the Q-factor by using the alternating-current signal from which the power transmission signal is removed. - View Dependent Claims (19)
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Specification