Patent ID: 8829732

Claim:
A wireless power receiving unit for receiving power, wherein the power receiving unit comprises: an induction coil, the induction coil being subjected to power in the form of an alternating magnetic field from a power transferring unit so that an alternating current is induced in the induction coil, a receiving concentrator core for concentrating the magnetic field towards the induction coil, wherein the receiving concentrator core is surrounded by a medium, and a receiving guide member providing a transition for the magnetic field between the medium and the receiving concentrator core, the receiving guide member abutting the receiving concentrator core, the receiving guide member having a magnetic permeability in the range between the magnetic permeability of the receiving concentrator core and the medium, wherein the induction coil is turned about a center axis, the receiving concentrator core comprises opposing base surfaces and a peripheral surface extending between the opposing base surfaces, the peripheral surface being directed away from the center axis in a radial direction, and the receiving guide member at least partially covers the peripheral surface.