Abstract: A holder configured to hold one or more components of a wireless charging power transfer system is provided. The apparatus comprises a first surface having one or more grooves configured to receive at least a portion of a conductor of a coil that spans the holder and at least one other holder, the coil configured to inductively transfer power via a magnetic field. The apparatus comprises one or more mechanical connectors configured to fasten the holder to the at least one other holder. The apparatus further comprises a plurality of transverse grooves on the first surface that extend in a direction substantially perpendicular to a direction of extension of the one or more grooves, the plurality of transverse grooves configured to guide the conductor of the coil from the holder to the at least one other holder.

Abstract: This disclosure provides systems, methods and apparatus for charging pads for use with wireless power systems. In one aspect a vehicle charging pad having a reduced thickness is provided. A charging pad may include multiple wire coils and a ferrite block backing. By forming a longitudinally extending slot in the ferrite block, a portion of the wires extending from the coils can be routed through the slot in the ferrite block to decrease the overall thickness of the charging pad.

Abstract: Methods and apparatuses for thermal dissipation in vehicle pads for wireless power transfer applications are provided. In some implementations, an apparatus for wirelessly receiving charging power is provided. The apparatus comprises at least one receive coil configured to wirelessly receive the charging power. The apparatus further comprises a plurality of electrical components configured to convert the charging power to a direct current. The apparatus further comprises a primary heat sink comprising a plurality of fins configured to dissipate heat generated by the plurality of electrical components. The plurality of fins are disposed adjacent to the plurality of electrical components. The apparatus further comprises at least one thermally conductive structure configured to physically connect at least some of the plurality of electrical components to the primary heat sink.

Abstract: An apparatus for determining a position between a wireless power transmitter and a wireless power receiver is provided. The apparatus comprises a ferrite structure. The apparatus further comprises a plurality of detection loops formed from metallic traces on a flexible printed circuit wrapped on or around the ferrite structure. Each of the plurality of detection loops comprises a solenoid detection loop. The ferrite structure comprises a first ferrite block and a second ferrite block disposed adjacent to the first ferrite block. A first wireless power transfer coil is wrapped on or around the first ferrite block. A second wireless power transfer coil is wrapped on or around the second ferrite block. Each detection loop of the plurality of detection loops is configured to sense an amount of magnetic flux flowing in a direction normal to a winding plane of the detection loop.

Abstract: A holder configured to hold one or more components of a wireless charging power transfer system is provided. The apparatus comprises a first surface having one or more grooves configured to receive at least a portion of a conductor of a coil that spans the holder and at least one other holder, the coil configured to inductively transfer power via a magnetic field. The apparatus comprises one or more mechanical connectors configured to fasten the holder to the at least one other holder. The apparatus further comprises a plurality of transverse grooves on the first surface that extend in a direction substantially perpendicular to a direction of extension of the one or more grooves, the plurality of transverse grooves configured to guide the conductor of the coil from the holder to the at least one other holder.

Abstract: This disclosure provides systems, methods and apparatus for charging pads for use with wireless power systems. In one aspect a vehicle charging pad having a reduced thickness is provided. A charging pad may include multiple wire coils and a ferrite block backing. By forming a longitudinally extending slot in the ferrite block, a portion of the wires extending from the coils can be routed through the slot in the ferrite block to decrease the overall thickness of the charging pad.