WIRELESS POWER COIL WITH MULTI-LAYER SHIELD
First Claim
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1. A wireless power receiver, comprising:
- a receive coil configured to generate an AC voltage in the presence of a magnetic field;
a conductive substrate arranged adjacent to the receive coil; and
a magnetic shield arranged between the receive coil and the conductive substrate, wherein the magnetic shield includes a first layer comprising a first material and a second layer comprising a second material, wherein the second material has a higher permeability than the first material.
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Abstract
A wireless power assembly including a multi-layer magnetic shield is described. The wireless power assembly includes a wireless power coil and the multi-layer magnetic shield arranged adjacent to the wireless power coil. The magnetic shield includes a first layer comprising a first material and a second layer comprising a second material, wherein the second material has a higher permeability than the first material.
8 Citations
20 Claims
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1. A wireless power receiver, comprising:
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a receive coil configured to generate an AC voltage in the presence of a magnetic field; a conductive substrate arranged adjacent to the receive coil; and a magnetic shield arranged between the receive coil and the conductive substrate, wherein the magnetic shield includes a first layer comprising a first material and a second layer comprising a second material, wherein the second material has a higher permeability than the first material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless power assembly, comprising:
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a wireless power coil; and a magnetic shield arranged adjacent to the wireless power coil, wherein the magnetic shield includes a first layer comprising a first material and a second layer comprising a second material, wherein the second material has a higher permeability than the first material. - View Dependent Claims (11, 12, 13)
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14. An electronic device, comprising:
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a receive coil configured to generate an AC voltage in the presence of a magnetic field; a battery arranged adjacent to the receive coil; and a magnetic shield arranged between the receive coil and the battery, wherein the magnetic shield includes a first layer comprising a first material and a second layer comprising a second material, wherein the second material has a higher permeability than the first material. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification