Wireless power feeder, wireless power receiver, and wireless power transmission system
First Claim
1. A wireless power receiver which acquires power by a non-contact method from a wireless power feeder,the wireless power receiver comprising:
- a power receive resonance circuit which includes a power receive coil and a power receive capacitor and acquires power from a power feed coil of the wireless power feeder by means of the power receive coil on the basis of a magnetic field resonance effect between the power feed coil and the power receive coil;
a power receive load coil which receives the power fed from the power receive coil by a non-contact method, the power receive load coil being wound around and adjacent to the power receive coil so that at least a part of the power receive coil is positioned inside the power receive load coil; and
an impedance converter which is arranged between the power receive load coil and a load and in which a primary impedance, connected to the power receive load coil is higher than a secondary impedance connected to the load.
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Accused Products
Abstract
A wireless power receiver according to an embodiment of the present invention is a wireless power receiver which acquire power by a non-contact method from a wireless power feeder, the wireless power receiver having: a power receive resonance circuit that includes a power receive coil and power receive capacitor and acquires power from a power feed coil of the wireless power feeder by means of the power receive coil on the basis of a magnetic field resonance effect between the power feed coil and the power receive coil; a power receive load coil that receives the power fed from the power receive coil by a non-contact method; and an impedance converter that is arranged between the power receive load coil and a load and in which a primary impedance connected to the power receive load coil is higher than a secondary impedance connected to the load.
51 Citations
8 Claims
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1. A wireless power receiver which acquires power by a non-contact method from a wireless power feeder,
the wireless power receiver comprising: -
a power receive resonance circuit which includes a power receive coil and a power receive capacitor and acquires power from a power feed coil of the wireless power feeder by means of the power receive coil on the basis of a magnetic field resonance effect between the power feed coil and the power receive coil; a power receive load coil which receives the power fed from the power receive coil by a non-contact method, the power receive load coil being wound around and adjacent to the power receive coil so that at least a part of the power receive coil is positioned inside the power receive load coil; and an impedance converter which is arranged between the power receive load coil and a load and in which a primary impedance, connected to the power receive load coil is higher than a secondary impedance connected to the load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification