ELECTRIC POWER SUPPLY SYSTEM FOR VEHICLE
First Claim
1. An electric power supply system for vehicle comprising:
- at least one power transmitting antenna, which is arranged on or under the ground, anda power receiving antenna, which is arranged in or on at least one vehicle,wherein the power transmitting and receiving antennas form a pair of resonators that couples with each other by producing resonant magnetic coupling between them, andwherein supposing that the direction in which the vehicle is traveling is Y direction and the direction perpendicular to the Y direction is X direction,the lengths of the power transmitting antenna as measured in the Y and X directions are greater than those of the power receiving antenna as measured in the Y and X directions, respectively, andwherein if the length of the power transmitting antenna as measured in the X direction is W1 and the distance between the power transmitting and receiving antennas that face each other is H, then the system satisfies 0.11×
W1≦
H≦
0.26×
W1, andwherein power is supplied from the power transmitting antenna to the power receiving antenna by a non-contact method when the power transmitting antenna faces the power receiving antenna.
1 Assignment
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Accused Products
Abstract
To stabilize the transmission characteristic of an electric power supply system for vehicle even when the vehicle being charged and powered by it shifts horizontally, a power transmitting antenna, which is arranged on the ground, and a power receiving antenna, which is arranged at the bottom of the vehicle, set up resonances at substantially the same resonant frequency and produce magnetic coupling between them. When the power receiving antenna enters the zone in which the power transmitting antenna is located, power is transmitted to the vehicle. By setting H, which is the distance between the power transmitting and receiving antennas that face each other, so that H satisfies 0.11×W1≦H≦0.26×W1 with respect to the width W1 of the power transmitting antenna, the transmission characteristic can be stabilized.
260 Citations
21 Claims
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1. An electric power supply system for vehicle comprising:
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at least one power transmitting antenna, which is arranged on or under the ground, and a power receiving antenna, which is arranged in or on at least one vehicle, wherein the power transmitting and receiving antennas form a pair of resonators that couples with each other by producing resonant magnetic coupling between them, and wherein supposing that the direction in which the vehicle is traveling is Y direction and the direction perpendicular to the Y direction is X direction, the lengths of the power transmitting antenna as measured in the Y and X directions are greater than those of the power receiving antenna as measured in the Y and X directions, respectively, and wherein if the length of the power transmitting antenna as measured in the X direction is W1 and the distance between the power transmitting and receiving antennas that face each other is H, then the system satisfies 0.11×
W1≦
H≦
0.26×
W1, andwherein power is supplied from the power transmitting antenna to the power receiving antenna by a non-contact method when the power transmitting antenna faces the power receiving antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification