A method to construct a high current electronic device such as an inductor or a transformer with a single or multi-layer PCB with split traces and/or laminated bus bars and a high current electronic device built according to these methods. Traces are set-up with cross-overs to ensure the length of all traces is equal to maintain good current sharing. Then, PCBs or bus bars are stacked to provide the turns required for the inductor. Cooling plates are provided to cool the structure which is in turn encapsulated in a potting material.

A method to construct a high current electronic device such as an inductor or a transformer with a single or multi-layer PCB with split traces and/or laminated bus bars and a high current electronic device built according to these methods. Traces are set-up with cross-overs to ensure the length of all traces is equal to maintain good current sharing. Then, PCBs or bus bars are stacked to provide the turns required for the inductor. Cooling plates are provided to cool the structure which is in turn encapsulated in a potting material.

A converter for a vehicle including an inductor which includes at least one coil, a core including a first region having an annular planar shape, around which the at least one coil is wound, and a second region having at least one first through-hole, a case accommodating the at least one coil and the core and including at least one cooling rod inserted into the at least one first through-hole, and a fixing bolt fastened to the at least one cooling rod exposed through the at least one first through-hole to fix the core to the case.

A converter for a vehicle including an inductor which includes at least one coil, a core including a first region having an annular planar shape, around which the at least one coil is wound, and a second region having at least one first through-hole, a case accommodating the at least one coil and the core and including at least one cooling rod inserted into the at least one first through-hole, and a fixing bolt fastened to the at least one cooling rod exposed through the at least one first through-hole to fix the core to the case.

The invention described herein relates to wireless power transfer systems and methods that efficiently and safely transfer power to electronic devices. In an aspect of the disclosure, an apparatus for wirelessly receiving power is provided. The apparatus may comprise a receiver circuit comprising a receiver coil configured to receive wireless power from a wireless power transmitter via a magnetic field sufficient to charge or power a load of the apparatus. The receiver circuit further comprises a ferrite material having a first side coupled to the receiver coil. The apparatus further comprises a first heat exchanger coupled to a second side of the ferrite material.

A resonator structure for wireless power transfer includes a first piece and a second piece of magnetic material disposed adjacent to one another, a spacer disposed between the first and second pieces of magnetic material forming a gap of 1 mm or less between the first and second pieces of magnetic material, and an electrical conductor wound to form a plurality of loops. The electrical conductor is disposed on the first and second pieces of magnetic material. The resonator structure includes a thermal conductor positioned in contact with the electrical conductor and at least one of the first and second pieces of magnetic material.

A resonator structure for wireless power transfer includes a first piece and a second piece of magnetic material disposed adjacent to one another, a spacer disposed between the first and second pieces of magnetic material forming a gap of 1 mm or less between the first and second pieces of magnetic material, and an electrical conductor wound to form a plurality of loops. The electrical conductor is disposed on the first and second pieces of magnetic material. The resonator structure includes a thermal conductor positioned in contact with the electrical conductor and at least one of the first and second pieces of magnetic material.

A coil device includes two core members, one of which is E-shaped. The E-shaped core member has left and right side faces, and a center leg that extends in a vertical direction. A conducting wire is wound around a core, the core being composed of the two core members arranged to face each other in the vertical direction with a gap between the two core members. The conducting wire is wound around the center leg. First and second heat-sinking plates made of metal are bent so as to be in contact with upper and side faces of the core. The first and second plates are arranged so that first edges of the plates are placed left-right symmetrically with respect to the core with a gap between the edges. Second edges of the plates are in contact with a metal heat-sinking board where the core is placed.

A coil electrode 4 provided in a coil component 1a includes a plurality of inner metal pins 5a arranged on an inner peripheral side of a coil core 3, a plurality of outer metal pins 5b arranged on an outer peripheral side of the coil core 3 to form a plurality of pairs with the inner metal pins 5a, a plurality of lower wiring patterns 7 that connect lower ends of the inner metal pins 5a and the outer metal pins 5b in the pairs, and a plurality of upper wiring patterns 6 that connect upper ends of the outer metal pins 5b to upper ends of inner metal pins 5a adjacent to the inner metal pins 5a that form the pairs with the outer metal pins 5b.

A coil electrode 4 provided in a coil component 1a includes a plurality of inner metal pins 5a arranged on an inner peripheral side of a coil core 3, a plurality of outer metal pins 5b arranged on an outer peripheral side of the coil core 3 to form a plurality of pairs with the inner metal pins 5a, a plurality of lower wiring patterns 7 that connect lower ends of the inner metal pins 5a and the outer metal pins 5b in the pairs, and a plurality of upper wiring patterns 6 that connect upper ends of the outer metal pins 5b to upper ends of inner metal pins 5a adjacent to the inner metal pins 5a that form the pairs with the outer metal pins 5b.