Power transfer system with shielding body, power transmitting device with shielding body, and power transfer method for power transmitting system
First Claim
1. A power transfer system comprising a power transmitting device and a power receiving device that are opposed to each other with sandwiching a medium therebetween, whereinthe power transmitting device includes:
- a transmission coil;
a first containment unit that includes a first surface opposed to the power receiving device and a second surface on an opposite side to the first surface, the first containment unit including a first dielectric body that covers the transmission coil and a second dielectric body that covers the first dielectric body, a dielectric loss tangent of the second dielectric body being greater than a dielectric loss tangent of the first dielectric body;
a first back dielectric body that is provided on the second surface of the first containment unit, the first back dielectric body including a first surface opposed to the first containment unit and a second surface on an opposite side to the first surface; and
a first shielding body that is provided on the second surface of the first back dielectric body,the power receiving device includes;
a receiving coil;
a second containment unit that includes a first surface opposed to the power transmitting device and a second surface on an opposite side to the first surface, the second containment unit including a dielectric body that covers the receiving coil;
a second back dielectric body that is provided on the second surface of the second containment unit, the second back dielectric body including a first surface opposed to the second containment unit and a second surface on an opposite side to the first surface; and
a second shielding body that is provided on the second surface of the second back dielectric body, andthe power transmitting device transmits electric power at a resonance frequency that is determined by an impedance of an electric power transmission path including the power transmitting device, the power receiving device, and the medium.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention provides a power transfer system capable of reducing electromagnetic energy that disappears into a medium as a resistor when the coil of a power transmitting device and the coil of a power receiving device are apart from each other, in such a way that the power transmitting device of the power transfer system is equipped with a backside dielectric body and a shield body. A power transmitting device (11) faces a power receiving device (12) through a medium. The power transmitting device (11) comprises: a power transmission coil (111); a containment portion (112) having a first surface (112A) facing the power receiving device and a second surface (112B) on the opposite side of the first surface and having a dielectric body covering the power transmission coil (111); a backside dielectric body (113) provided on the second surface (112B) of the containment portion and having a first surface (113A) facing the containment portion and a second surface (113B) on the opposite side of the first surface; and a shield body (114) provided on the second surface (113B) of the backside dielectric body.
-
Citations
20 Claims
-
1. A power transfer system comprising a power transmitting device and a power receiving device that are opposed to each other with sandwiching a medium therebetween, wherein
the power transmitting device includes: -
a transmission coil; a first containment unit that includes a first surface opposed to the power receiving device and a second surface on an opposite side to the first surface, the first containment unit including a first dielectric body that covers the transmission coil and a second dielectric body that covers the first dielectric body, a dielectric loss tangent of the second dielectric body being greater than a dielectric loss tangent of the first dielectric body; a first back dielectric body that is provided on the second surface of the first containment unit, the first back dielectric body including a first surface opposed to the first containment unit and a second surface on an opposite side to the first surface; and a first shielding body that is provided on the second surface of the first back dielectric body, the power receiving device includes; a receiving coil; a second containment unit that includes a first surface opposed to the power transmitting device and a second surface on an opposite side to the first surface, the second containment unit including a dielectric body that covers the receiving coil; a second back dielectric body that is provided on the second surface of the second containment unit, the second back dielectric body including a first surface opposed to the second containment unit and a second surface on an opposite side to the first surface; and a second shielding body that is provided on the second surface of the second back dielectric body, and the power transmitting device transmits electric power at a resonance frequency that is determined by an impedance of an electric power transmission path including the power transmitting device, the power receiving device, and the medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A power transmitting device that is opposed to a power receiving device with sandwiching a medium therebetween, the power transmitting device comprising:
-
a transmission coil; a containment unit that includes a first surface opposed to the power receiving device and a second surface on an opposite side to the first surface, the containment unit including a first dielectric body that covers the transmission coil and a second dielectric body that covers the first dielectric body, a dielectric loss tangent of the second dielectric body being greater than a dielectric loss tangent of the first dielectric body; a back dielectric body that is provided on the second surface of the containment unit, the back dielectric body including a first surface opposed to the containment unit and a second surface on an opposite side to the first surface; and a shielding body that is provided on the second surface of the back dielectric body.
-
-
20. A power transfer method for a power transfer system, the power transfer system including a power transmitting device and a power receiving device that are opposed to each other with sandwiching a medium therebetween, the power transfer method comprising:
-
preparing a power transmitting device including a transmission coil, a first containment unit, a first back dielectric body and a first shielding body, the first containment unit including a first surface opposed to the power receiving device and a second surface on an opposite side to the first surface, the first containment unit including a first dielectric body that covers the transmission coil and a second dielectric body that covers the first dielectric body, a dielectric loss tangent of the second dielectric body being greater than a dielectric loss tangent of the first dielectric body, the first back dielectric body being provided on the second surface of the first containment unit, the first back dielectric body including a first surface opposed to the first containment unit and a second surface on an opposite side to the first surface, the first shielding body being provided on the second surface of the first back dielectric body; preparing a power receiving device including a receiving coil, a second containment unit, a second back dielectric body and a second shielding body, the second containment unit including a first surface opposed to the power transmitting device and a second surface on an opposite side to the first surface, the second containment unit including a dielectric body that covers the receiving coil, the second back dielectric body being provided on the second surface of the second containment unit, the second back dielectric body including a first surface opposed to the second containment unit and a second surface on an opposite side to the first surface, the second shielding body being provided on the second surface of the second back dielectric body; and transmitting electric power at a resonance frequency that is determined by an impedance of an electric power transmission path including the power transmitting device, the power receiving device, and the medium.
-
Specification