Coil unit, non-contact power transmission device, non-contact power reception device, non-contact power supply system, and vehicle
First Claim
1. A coil unit that is provided in a vehicle or in a power supply device for a vehicle, and that performs at least one of transmission and reception of electric power using electromagnetic resonance between the coil unit and a primary resonance coil disposed to face the coil unit, the coil unit comprisinga secondary resonance coil that electromagnetically resonates with the primary resonance coil, wherein:
- the secondary resonance coil includes a first coil and a second coil;
the first coil and the second coil have a same number of turns, a same coil diameter, and a same shape, the first coil and the second coil are electrically connected in series, and the first coil and the second coil are disposed in a manner such that directions of generated magnetic fields are opposite to each other; and
the first coil is disposed adjacent to the second coil on a plane perpendicular to the directions of the generated magnetic fields.
1 Assignment
0 Petitions
Accused Products
Abstract
A coil unit performs at least one of transmission and reception of electric power using electromagnetic resonance between the coil unit and a primary resonance coil disposed to face the coil unit. The coil unit includes a secondary resonance coil that includes a plurality of coils, and that electromagnetically resonates with the primary resonance coil. A first coil among the plurality of coils is disposed in a manner such that a magnetic field generated by the first coil has a phase opposite to a phase of a magnetic field generated by at least one coil other than the first coil among the plurality of coils, with respect to a plane that faces the primary resonance coil.
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Citations
24 Claims
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1. A coil unit that is provided in a vehicle or in a power supply device for a vehicle, and that performs at least one of transmission and reception of electric power using electromagnetic resonance between the coil unit and a primary resonance coil disposed to face the coil unit, the coil unit comprising
a secondary resonance coil that electromagnetically resonates with the primary resonance coil, wherein: -
the secondary resonance coil includes a first coil and a second coil; the first coil and the second coil have a same number of turns, a same coil diameter, and a same shape, the first coil and the second coil are electrically connected in series, and the first coil and the second coil are disposed in a manner such that directions of generated magnetic fields are opposite to each other; and the first coil is disposed adjacent to the second coil on a plane perpendicular to the directions of the generated magnetic fields. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A coil unit that is provided in a vehicle or in a power supply device for a vehicle, and that performs at least one of transmission and reception of electric power using electromagnetic resonance between the coil unit and a primary resonance coil disposed to face the coil unit, the coil unit comprising
a secondary resonance coil that electromagnetically resonates with the primary resonance coil, wherein: -
the secondary resonance coil includes a first coil and a second coil; the first coil and the second coil have a same number of turns, a same coil diameter, and a same shape, the first coil and the second coil are electrically connected in series, and the first coil and the second coil are disposed in a manner such that directions of generated electric currents are opposite to each other; and the first coil is disposed adjacent to the second coil on a plane perpendicular to directions of generated magnetic fields. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A coil unit that is provided in a vehicle or in a power supply device for a vehicle, and that performs at least one of transmission and reception of electric power using electromagnetic resonance between the coil unit and a primary resonance coil disposed to face the coil unit, the coil unit comprising
a secondary resonance coil that electromagnetically resonates with the primary resonance coil, wherein: -
the secondary resonance coil includes a first coil and a second coil; the first coil and the second coil have a same number of turns, a same coil diameter, and a same shape, the first coil and the second coil are electrically connected in series, and the first coil and the second coil are disposed in a manner such that phases of generated magnetic fields are opposite to each other; and the first coil is disposed adjacent to the second coil on a plane perpendicular to directions of the generated magnetic fields. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A non-contact power supply system for non-contact transmission of electric power, the non-contact power supply system comprising:
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a power transmission device; and a power reception device that is provided in a vehicle, and that faces the power transmission device, wherein; the power transmission device includes a primary resonance coil that is configured to supply electric power, which has been supplied from a power source device, to the power reception device using electromagnetic resonance between the primary resonance coil and the power reception device; the primary resonance coil includes a first transmission coil and a second transmission coil; the first transmission coil and the second transmission coil have a same number of turns, a same coil diameter, and a same shape, the first transmission coil and the second transmission coil are electrically connected in series, and the first transmission coil and the second transmission coil are disposed in a manner such that directions of magnetic fields generated by electric power supplied from the power source device are opposite to each other; the first transmission coil is disposed adjacent to the second transmission coil on a plane perpendicular to the directions of the generated magnetic fields; the power reception device includes a secondary resonance coil that is configured to receive electric power from the power transmission device using electromagnetic resonance between the secondary resonance coil and the primary resonance coil; the secondary resonance coil includes a first reception coil and a second reception coil; the first reception coil and the second reception coil have a same number of turns, a same coil diameter, and a same shape, the first reception coil and the second reception coil are electrically connected in series, and the first reception coil and the second reception coil are disposed in a manner such that directions of magnetic fields generated by electric power received from the power transmission device are opposite to each other; and the first reception coil is disposed adjacent to the second reception coil on a plane perpendicular to the directions of the generated magnetic fields. - View Dependent Claims (20)
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21. A non-contact power supply system for non-contact transmission of electric power, the non-contact power supply system comprising:
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a power transmission device; and a power reception device that is provided in a vehicle, and that faces the power transmission device, wherein; the power transmission device includes a primary resonance coil that is configured to supply electric power, which has been supplied from a power source device, to the power reception device using electromagnetic resonance between the primary resonance coil and the power reception device; the primary resonance coil includes a first transmission coil and a second transmission coil; the first transmission coil and the second transmission coil have a same number of turns, a same coil diameter, and a same shape, the first transmission coil and the second transmission coil are electrically connected in series, and the first transmission coil and the second transmission coil are disposed in a manner such that directions of electric currents generated by electric power supplied from the power source device are opposite to each other; the first transmission coil is disposed adjacent to the second transmission coil on a plane perpendicular to directions of generated magnetic fields; the power reception device includes a secondary resonance coil that is configured to receive electric power from the power transmission device using electromagnetic resonance between the secondary resonance coil and the primary resonance coil; the secondary resonance coil includes a first reception coil and a second reception coil; the first reception coil and the second reception coil have a same number of turns, a same coil diameter, and a same shape, the first reception coil and the second reception coil are electrically connected in series, and the first reception coil and the second reception coil are disposed in a manner such that directions of electric currents generated by electric power received from the power transmission device are opposite to each other; and the first reception coil is disposed adjacent to the second reception coil on a plane perpendicular to directions of generated magnetic fields. - View Dependent Claims (22)
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23. A non-contact power supply system for non-contact transmission of electric power, the non-contact power supply system comprising:
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a power transmission device; and a power reception device that is provided in a vehicle, and that faces the power transmission device, wherein; the power transmission device includes a primary resonance coil that is configured to supply electric power, which has been supplied from a power source device, to the power reception device using electromagnetic resonance between the primary resonance coil and the power reception device; the primary resonance coil includes a first transmission coil and a second transmission coil; the first transmission coil and the second transmission coil have a same number of turns, a same coil diameter, and a same shape, the first transmission coil and the second transmission coil are electrically connected in series, and the first transmission coil and the second transmission coil are disposed in a manner such that phases of magnetic fields generated by electric power supplied from the power source device are opposite to each other; the first transmission coil is disposed adjacent to the second transmission coil on a plane perpendicular to directions of the generated magnetic fields; the power reception device includes a secondary resonance coil that is configured to receive electric power from the power transmission device using electromagnetic resonance between the secondary resonance coil and the primary resonance coil; the secondary resonance coil includes a first reception coil and a second reception coil; the first reception coil and the second reception coil have a same number of turns, a same coil diameter, and a same shape, the first reception coil and the second reception coil are electrically connected in series, and the first reception coil and the second reception coil are disposed in a manner such that phases of magnetic fields generated by electric power received from the power transmission device are opposite to each other; and the first reception coil is disposed adjacent to the second reception coil on a plane perpendicular to directions of the generated magnetic fields. - View Dependent Claims (24)
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Specification