NON-CONTACT POWER FEEDING APPARATUS AND NON-CONTACT POWER FEEDING METHOD
First Claim
1. A non-contact power feeding apparatus which transmits, by at least magnetic coupling, an electric power in a non-contact manner to a power reception coil from a power transmission coil electrically connected to an alternating-current power source and which outputs an electric power to a load electrically connected to the power reception coil, the non-contact power feeding apparatus comprising:
- a coupling state estimator configured to estimate a coupling state between the power transmission coil and the power reception coil; and
an available output power calculator configured to calculate an available output power that can be output to the load, based on a limit value of a circuit element of a power feeding circuit including the power transmission coil and the power reception coil and on the coupling state.
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Accused Products
Abstract
A non-contact power feeding apparatus transmits, by at least magnetic coupling, an electric power in a non-contact manner to a power reception coil from a power transmission coil. The transmission coil is electrically connected to an alternating-current power source. The non-contact power feeding apparatus outputs an electric power to a load electrically connected to the power reception coil. The non-contact power feeding apparatus includes a coupling state estimator configured to estimate a coupling state between the power transmission coil and the power reception coil. The non-contact power feeding apparatus also includes an available output power calculator configured to calculate an available output power that can be output to the load, based on a limit value of a circuit element of a power feeding circuit including the power transmission coil and the power reception coil and on the coupling state.
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Citations
18 Claims
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1. A non-contact power feeding apparatus which transmits, by at least magnetic coupling, an electric power in a non-contact manner to a power reception coil from a power transmission coil electrically connected to an alternating-current power source and which outputs an electric power to a load electrically connected to the power reception coil, the non-contact power feeding apparatus comprising:
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a coupling state estimator configured to estimate a coupling state between the power transmission coil and the power reception coil; and an available output power calculator configured to calculate an available output power that can be output to the load, based on a limit value of a circuit element of a power feeding circuit including the power transmission coil and the power reception coil and on the coupling state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A non-contact power feeding method for transmitting, by at least magnetic coupling, an electric power in a non-contact manner to a power reception coil from a power transmission coil electrically connected to an alternating-current power source and for outputting an electric power to a load electrically connected to the power reception coil, the method comprising:
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estimating a coupling state between the power transmission coil and the power reception coil; and calculating an available output power that can be output to the load, based on a limit value of a circuit element of a power feeding circuit including the power transmission coil and the power reception coil and on the coupling state.
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Specification