COIL APPARATUS AND NON-CONTACT POWER TRANSMISSION APPARATUS
First Claim
1. A coil apparatus for a non-contact power transmission apparatus constituted by a power transmission coil apparatus to which AC power is input and a power receive coil apparatus which outputs AC power from the power transmission coil apparatus,wherein at least one of the power transmission coil apparatus and the power receive coil apparatus includes:
- a first winding section which constitutes a first resonance circuit together with a first capacitance element;
a second winkling section which is magnetically coupled to the first winding section; and
a third winding section which constitutes a second resonance circuit together with a second capacitance element, and which is magnetically coupled to the first winding section.
2 Assignments
0 Petitions
Accused Products
Abstract
A coil apparatus and a non-contact power transmission apparatus having improved power transmission efficiency are provided. A power transmission side coil apparatus comprises: an excitation coil (second winding section) which transmits AC power supplied from a power source to a transmission coil; a resonance circuit (first resonance circuit) which is formed by a capacitor (first capacitance element) and a transmission coil (first winding section) which is connected to this capacitor and which transmits AC power from the excitation coil to a power receive side coil apparatus; and a resonance circuit (second resonance circuit) which is formed by a variable capacitor (second capacitance element) and a control coil (third winding section) which is connected to this variable capacitor and which resonates with the transmission coil.
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Citations
5 Claims
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1. A coil apparatus for a non-contact power transmission apparatus constituted by a power transmission coil apparatus to which AC power is input and a power receive coil apparatus which outputs AC power from the power transmission coil apparatus,
wherein at least one of the power transmission coil apparatus and the power receive coil apparatus includes: -
a first winding section which constitutes a first resonance circuit together with a first capacitance element; a second winkling section which is magnetically coupled to the first winding section; and a third winding section which constitutes a second resonance circuit together with a second capacitance element, and which is magnetically coupled to the first winding section. - View Dependent Claims (2, 3, 4, 5)
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Specification