Power feeding system and electrical powered vehicle
First Claim
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1. A power feeding system comprising:
- a power reception resonator receiving electric power from a power transmission resonator receiving electric power from a power source to generate an electromagnetic field, by resonating with said power transmission resonator via said electromagnetic field,a rectifier rectifying electric power received by said power reception resonator,a voltage converter voltage-converting the electric power rectified by said rectifier for supply to a load, anda voltage control device controlling a voltage between said rectifier and said voltage converter to attain a predetermined target voltage,said voltage control device setting said predetermined target voltage based on a magnitude of reception electric power.
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Abstract
Power feeding is performed in a non-contact manner from a power feeding device to an electrical powered vehicle by resonance of a primary self-resonant coil of the power feeding device and a secondary self-resonant coil of the electrical powered vehicle through an electromagnetic field. The electric power received by the secondary self-resonant coil is rectified by a rectifier, and voltage-converted by a DC/DC converter to be supplied to a power storage device. A vehicle ECU controls the DC/DC converter such that the voltage between the rectifier and the DC/DC converter attains a target voltage.
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Citations
23 Claims
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1. A power feeding system comprising:
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a power reception resonator receiving electric power from a power transmission resonator receiving electric power from a power source to generate an electromagnetic field, by resonating with said power transmission resonator via said electromagnetic field, a rectifier rectifying electric power received by said power reception resonator, a voltage converter voltage-converting the electric power rectified by said rectifier for supply to a load, and a voltage control device controlling a voltage between said rectifier and said voltage converter to attain a predetermined target voltage, said voltage control device setting said predetermined target voltage based on a magnitude of reception electric power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A power feeding system comprising:
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a power reception resonator receiving electric power from a power transmission resonator receiving electric power from a power source to generate an electromagnetic field, by resonating with said power transmission resonator via said electromagnetic field, a rectifier rectifying electric power received by said power receptor resonator, a voltage converter voltage-converting the electric power rectified by said rectifier for supply to a load, a voltage control device controlling a voltage between said rectifier and said voltage converter to attain a predetermined target voltage, and a sensor device sensing reflected power of electric power supplied from said power source to said power transmission resonator, wherein said voltage control device modifies said predetermined target voltage such that said reflected power is reduced. - View Dependent Claims (11, 12)
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13. An electrical powered vehicle comprising:
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a power reception resonator receiving electric power from a power transmission resonator included in a power feeding device provided external to the vehicle by resonating with said power transmission resonator via an electromagnetic field, a rectifier rectifying electric power received by said power reception resonator, a voltage converter voltage-converting the electric power rectified by said rectifier, an electric drive device generating a vehicle driving power using electric power output from said voltage converter, and a voltage control device controlling a voltage between said rectifier and said voltage converter to attain a predetermined target voltage, said voltage control device setting said predetermined target voltage based on a magnitude of reception electric power. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. An electrical powered vehicle comprising:
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a power reception resonator receiving electric power from a power transmission resonator included in a power feeding device provided external to the vehicle by resonating with said power transmission resonator via an electromagnetic field, a rectifier rectifying electric power received by said power reception resonator, a voltage converter voltage-converting the electric power rectified by said rectifier, an electric drive device generating a vehicle driving power using electric power output from said voltage converter, a voltage control device controlling a voltage between said rectifier and said voltage converter to attain a predetermined target voltage, and a communication device for communication with said power feeding device, wherein a reflected power of electric power supplied from a power source to said power transmission resonator is sensed at said power feeding device, said voltage control device receives said reflected power sensed at said power feeding device through said communication device, and modifies said predetermined target voltage such that said reflected power is reduced. - View Dependent Claims (22, 23)
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Specification