Movable portion transmission system using wireless power transmission
First Claim
1. A movable portion transmission system using wireless power transmission which is performed via a rotary member, said movable portion transmission system comprising:
- a primary transmission power supply to supply electric power;
a transmission antenna to perform wireless transmission of the electric power from the primary transmission power supply; and
a reception antenna to receive the electric power from the transmission antenna;
wherein the transmission antenna includes a transmission side coil in a spiral shape having successive conductor turns arranged along a same axial plane of the rotary member and each of the successive conductor turns has different diameters, a center of the spiral shape of the transmission side coil being an axial center of the rotary member, and the reception antenna includes a reception side coil in a spiral shape having successive conductor turns arranged along the same axial plane and each of the successive conductor turns has different diameters, a center of the spiral shape of the reception side coil being the axial center of the rotary member, whereina plurality of sets each having the transmission antenna and the reception antenna are disposed, and are arranged at intervals along a direction of the axial center of the rotary member.
1 Assignment
0 Petitions
Accused Products
Abstract
A movable portion transmission system includes a transmitter and receiver having a transmission antenna to perform wireless transmission of electric power supplied thereto and a reception antenna to receive the electric power from the transmission antenna, a transmission power supply circuit to establish a resonance condition of the transmission antenna, and a reception power supply circuit to establish a resonance condition of the reception antenna. The transmission antenna includes a transmission side coil in a spiral shape which is arranged while being centered at the axial center of a rotary member, and the reception antenna includes a reception side coil in a spiral shape which is arranged with a gap therefrom to the transmission side coil while being centered at the axial center of the rotary member.
7 Citations
11 Claims
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1. A movable portion transmission system using wireless power transmission which is performed via a rotary member, said movable portion transmission system comprising:
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a primary transmission power supply to supply electric power; a transmission antenna to perform wireless transmission of the electric power from the primary transmission power supply; and a reception antenna to receive the electric power from the transmission antenna; wherein the transmission antenna includes a transmission side coil in a spiral shape having successive conductor turns arranged along a same axial plane of the rotary member and each of the successive conductor turns has different diameters, a center of the spiral shape of the transmission side coil being an axial center of the rotary member, and the reception antenna includes a reception side coil in a spiral shape having successive conductor turns arranged along the same axial plane and each of the successive conductor turns has different diameters, a center of the spiral shape of the reception side coil being the axial center of the rotary member, wherein a plurality of sets each having the transmission antenna and the reception antenna are disposed, and are arranged at intervals along a direction of the axial center of the rotary member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification
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- Resources
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Current AssigneeMitsubshi Electric Engineering Company Limited (Mitsubishi Electric Corporation)
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Original AssigneeMitsubshi Electric Engineering Company Limited (Mitsubishi Electric Corporation)
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InventorsAkuzawa, Yoshiyuki, Sakai, Kiyohide, Ezoe, Toshihiro, Ito, Yuki
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Primary Examiner(s)Barnie, Rexford N
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Assistant Examiner(s)Ortiz, Elim
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Application NumberUS15/303,949Publication NumberTime in Patent Office1,967 DaysField of SearchUS Class CurrentCPC Class CodesH01F 38/18 Rotary transformersH02J 50/10 using inductive couplingH02J 50/12 of the resonant typeH02J 50/20 using microwaves or radio f...H02J 50/402 the two or more transmittin...H02J 50/90 involving detection or opti...
