CONTACTLESS POWER SUPPLY DEVICE

A contactless power supply device including: a power receiving portion (22) which is provided at the center in the vehicle width direction, of a front part of the lower surface of a floor panel (40) of a vehicle (1); a power supply portion (12) which is provided for a parking space (2) and contactlessly supplies electric power to the vehicle by magnetic connection with the power receiving portion (22); a sub-frame (51) provided in a lower part of a front compartment (1F) of the vehicle (1); a motor unit (29U) mounted on the sub-frame (51); and extension portions (53) stiffening fixed portions of the power receiving portion (22), the extension portions (53) being extended from both sides of the rear end of the sub-frame (51) in the vehicle width direction toward the back of the vehicle along both sides of the power receiving portion (22) in the vehicle width direction.