Patent ID: 11901741
Assignee: DENSO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 3:
4. The wireless power transfer system according to claim 3, wherein
the power transmission resonance circuit is configured to further include a resonance capacitor,
a value of a capacitance of the resonance capacitor or a value of an inductance of the power transmission coil is variable both in a case where the coils of the two adjacent resonance circuits are not coupled to each other, and in a case where the coils of the two adjacent resonance circuits are coupled to each other at the predetermined coupling coefficient, or
the power transmission resonance circuit is configured to further include a resonance capacitor, and a relay resonance circuit having a fixed relative position with respect to the power transmission resonance circuit is configured to further include a capacitance,
a value of a capacitance of the resonance capacitor of the power transmission resonance circuit or a value of an inductance of the power transmission coil is variable, and also a value of a capacitance of the capacitor of the relay resonance circuit or a value of an inductance of the coil of the relay resonance circuit is variable, both in the case where the coils of the two adjacent resonance circuits are not coupled to each other, and in the case where the coils of the two adjacent resonance circuits are coupled to each other at the predetermined coupling coefficient.