Patent ID: 11888326
Assignee: DENSO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 1:
2. A contactless power reception device that receives electric power supplied to a vehicle in a contactless manner, the power reception device comprising:
a power reception resonance circuit; and
a power reception circuit that converts alternating-current power received by the power reception resonance circuit into direct-current power and supplies the direct-current power to a load, wherein
the power reception circuit includes:
a power reception-side immittance conversion circuit that adjusts the alternating-current power input from the power reception resonance circuit;
a rectification circuit that converts the alternating-current power input from the power reception-side immittance conversion circuit into direct-current power; and
a power conversion circuit that converts the direct-current power input from the rectification circuit into power suppliable to the load, and

a characteristic impedance of the power reception-side immittance conversion circuit is ⅕ or less of an impedance forward on the power reception resonance circuit-side from the power reception-side immittance conversion circuit.