Wireless power transfer magnetic couplers
First Claim
Patent Images
1. A magnetic coupler, comprising:
- a ferrimagnetic component capable of guiding a magnetic field,a wire coil wrapped around at least a portion of the ferrimagnetic component, anda screen capable of blocking leakage magnetic fields, the screen positioned to cover at least one side of the ferrimagnetic component and the coil, wherein the screen comprises a metamaterial, the metamaterial comprising printed circuit board (“
PCB”
) coils, the PCB coils comprising at least one full turn.
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Accused Products
Abstract
A magnetic coupler is disclosed for wireless power transfer systems. A ferrimagnetic component is capable of guiding a magnetic field. A wire coil is wrapped around at least a portion of the ferrimagnetic component. A screen is capable of blocking leakage magnetic fields. The screen may be positioned to cover at least one side of the ferrimagnetic component and the coil. A distance across the screen may be at least six times an air gap distance between the ferrimagnetic component and a receiving magnetic coupler.
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Citations
10 Claims
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1. A magnetic coupler, comprising:
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a ferrimagnetic component capable of guiding a magnetic field, a wire coil wrapped around at least a portion of the ferrimagnetic component, and a screen capable of blocking leakage magnetic fields, the screen positioned to cover at least one side of the ferrimagnetic component and the coil, wherein the screen comprises a metamaterial, the metamaterial comprising printed circuit board (“
PCB”
) coils, the PCB coils comprising at least one full turn. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless power transfer system, comprising:
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a transmitting magnetic coupler, a receiving magnetic coupler, wherein the transmitting magnetic coupler and the receiving magnetic coupler each comprise; a ferrimagnetic component capable of guiding a magnetic field, a wire coil wrapped around at least a portion of the ferrimagnetic component, and a screen capable of blocking leakage magnetic fields, the screen positioned to cover at least one side of the ferrimagnetic component and the coil, wherein the screen comprises a metamaterial, the metamaterial comprising printed circuit board (“
PCB”
) coils, the PCB coils comprising at least one full turn.
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Specification