Wireless power transfer systems with shield openings
First Claim
Patent Images
1. An apparatus for wireless power transfer, the apparatus comprising:
- a plurality of adjacent magnetic elements positioned in a plane and defining a gap;
a coil comprising one or more loops of conductive material positioned, at least in part, on a first side of the plane and on both sides of the gap; and
a conductive shield positioned on a second side of the plane and comprising an opening aligned with the gap.
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Abstract
In a first aspect, the disclosure features apparatuses for wireless power transfer, the apparatuses including a plurality of magnetic elements joined together to form a magnetic component extending in a plane, where discontinuities in the magnetic component between adjacent magnetic elements define gaps in the magnetic component, a coil including one or more loops of conductive material positioned, at least in part, on a first side of the plane. The apparatuses include a conductive shield positioned on a second side of the plane and which includes one or more openings positioned relative to the gaps.
685 Citations
20 Claims
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1. An apparatus for wireless power transfer, the apparatus comprising:
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a plurality of adjacent magnetic elements positioned in a plane and defining a gap; a coil comprising one or more loops of conductive material positioned, at least in part, on a first side of the plane and on both sides of the gap; and a conductive shield positioned on a second side of the plane and comprising an opening aligned with the gap. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for wireless power transfer, the apparatus comprising:
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a plurality of adjacent magnetic elements positioned in a plane and defining a gap; a coil comprising one or more loops of conductive material positioned, at least in part, on a first side of the plane; and a conductive shield positioned on a second side of the plane and comprising a depression formed in a surface of the shield facing the plane, and aligned with the gap. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for wireless power transfer, comprising:
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a plurality of adjacent planar magnetic elements positioned in a plane and defining a gap in the plane; a coil comprising one or more loops of conductive material; and a conductive shield positioned on a second side of the plane and comprising at least one of a depression and an opening formed in a surface of the shield, wherein the at least one of the depression and the opening is aligned with the gap, wherein the coil is oriented so that during operation of the apparatus, the coil generates an average magnetic field oriented in a first direction parallel to the plane. - View Dependent Claims (19, 20)
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Specification