Patent ID: 11932127
Assignee: NISSAN MOTOR CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 0:
1. A contactless electricity supply system for a vehicle, the system comprising:
a power transmitter coil unit provided on a ground-side; and
a lifting device that lifts up the power transmitter coil unit from the ground, wherein
the power transmitter coil unit includes a power transmitter coil that supplies electricity contactlessly to a power receiving coil unit provided on a vehicle-side by magnetically coupling with a power receiving coil housed in the power receiving coil unit, and a case that houses the power transmitter coil, a first foreign object detection coil and a second foreign object detection coil,
the power transmitter coil is wound in a planar manner about a winding center axis,
a bulge is formed around the winding center axis on an upper face of the case so as to bulge upward from a surrounding surface,
the first foreign object detection coil is disposed on the power transmitter coil, and detects a foreign object above the power transmitter coil based on induction voltage generated in the first foreign object detection coil, and
the second foreign object detection coil is disposed beneath the bulge, and detects a foreign object on the bulge based on induction voltage generated in the second foreign object detection coil.