Non-contact power supply system, and power transmission device and vehicle used therein
First Claim
1. A non-contact power supply system configured to supply electric power in a non-contact manner from a power transmission device to a vehicle,the vehicle including a power receiving unit configured to receive electric power in a non-contact manner from the power transmission device,the power transmission device including a power supply unit, a power transmission unit configured to supply electric power in a non-contact manner from the power supply unit to the power receiving unit, and an impedance adjusting unit electrically connected between the power supply unit and the power transmission unit and configured to adjust an impedance between the power supply unit and the power transmission unit,the non-contact power supply system comprising:
- a detection unit configured to detect a distance between the power transmission unit and the power receiving unit in a vertical direction; and
a control device configured to control the impedance adjusting unit, the control device assisting an alignment between the power transmission unit and the power receiving unit while the vehicle is moving during a parking operation of the vehicle with respect to the power transmission device based on a power transmission efficiency between the power transmission unit and the power receiving unit, andat the time of the alignment, while the vehicle is moving during the parking operation, the control device controlling the impedance adjusting unit based on the distance in the vertical direction detected by the detection unit.
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Accused Products
Abstract
A non-contact power supply system supplies electric power in a non-contact manner from a power transmission device to a vehicle. The power transmission device includes an impedance adjusting unit configured to adjust an impedance between a power supply unit and a power transmission unit. A vehicle ECU assists an alignment between the power transmission unit and the power receiving unit in the parking operation based on a power transmission efficiency between the power transmission unit and the power receiving unit. A power transmission ECU, at the time of the alignment in the parking operation, controls the impedance adjusting unit based on a distance between the power transmission unit and the power receiving unit in a vertical direction (vehicle height). Accordingly, lowering of the power transmission efficiency caused by a change in an impedance along with a change in the vehicle height can be suppressed.
71 Citations
13 Claims
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1. A non-contact power supply system configured to supply electric power in a non-contact manner from a power transmission device to a vehicle,
the vehicle including a power receiving unit configured to receive electric power in a non-contact manner from the power transmission device, the power transmission device including a power supply unit, a power transmission unit configured to supply electric power in a non-contact manner from the power supply unit to the power receiving unit, and an impedance adjusting unit electrically connected between the power supply unit and the power transmission unit and configured to adjust an impedance between the power supply unit and the power transmission unit, the non-contact power supply system comprising: -
a detection unit configured to detect a distance between the power transmission unit and the power receiving unit in a vertical direction; and a control device configured to control the impedance adjusting unit, the control device assisting an alignment between the power transmission unit and the power receiving unit while the vehicle is moving during a parking operation of the vehicle with respect to the power transmission device based on a power transmission efficiency between the power transmission unit and the power receiving unit, and at the time of the alignment, while the vehicle is moving during the parking operation, the control device controlling the impedance adjusting unit based on the distance in the vertical direction detected by the detection unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A vehicle configured to receive electric power in a non-contact manner from a power transmission device configured to adjust an impedance by means of an impedance adjusting unit, comprising:
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a power receiving unit configured to receive electric power in a non-contact manner from a power transmission unit of the power transmission device; and a control device configured to control an alignment between the power transmission unit and the power receiving unit while the vehicle is moving during a parking operation with respect to the power transmission device based on a power transmission efficiency between the power transmission unit and the power receiving unit, at the time of the alignment, while the vehicle is moving in the parking operation, the control device controlling the impedance adjusting unit of the power transmission device based on a distance between the power transmission unit and the power receiving unit in a vertical direction.
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13. A power transmission device configured to transmit electric power in a non-contact manner to vehicle, comprising:
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a power supply unit; a power transmission unit configured to supply electric power in a non-contact manner from the power supply unit to a power receiving unit of the vehicle; an impedance adjusting unit electrically connected between the power supply unit and the power transmission unit and configured to adjust an impedance between the power supply unit and the power transmission unit; and a control device configured to control the impedance adjusting unit, the vehicle performing an alignment of the power transmission unit and the power receiving unit while the vehicle is moving during a parking operation with respect to the transmission device based on a power transmission efficiency between the power transmission unit and the power receiving unit, and at the time of the alignment, while the vehicle is moving during the parking operation, the control device controlling the impedance adjusting unit based on a distance between the power transmission unit and the power receiving unit in a vertical direction.
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Specification