Wireless Charging Apparatus
First Claim
1. A wireless charging apparatus comprising:
- a soft magnetic material; and
a coil disposed on the soft magnetic material,wherein the soft magnetic material includes a soft magnetic alloy that has a chemical formula expressed as Fe100-x-yCuxBy (where x ranges from 0.1 at % to 1.7 at % and y ranges from 2.3 at % to 9.6 at %) and grains with a size from 10 nm to 99 nm.
1 Assignment
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Accused Products
Abstract
Disclosed are a soft magnetic alloy and a wireless charging apparatus including the soft magnetic alloy. The soft magnetic alloy has a chemical formula expressed as Fe100-x-yCuxBy (wherein x ranges from 0.1 at % to 1.7 at % and y ranges from 2.3 at % to 9.6 at %). Without adding any expensive alloying element, only iron (Fe), copper (Cu), and boron (B) are used to obtain a nanocrystalline soft magnetic alloy that has a low coercive force and a high saturation magnetic flux density. The nanocrystalline soft magnetic alloy is applied to a wireless power transmitter and a wireless power receiver. Thereby, it is possible to make a shield member thin and increase a power transmission capacity. The soft magnetic alloy is easily processed into a flake form. The soft magnetic alloy processed in this way is applied to the shield member. Thereby, it is possible to increase permeability in a surface direction.
22 Citations
14 Claims
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1. A wireless charging apparatus comprising:
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a soft magnetic material; and a coil disposed on the soft magnetic material, wherein the soft magnetic material includes a soft magnetic alloy that has a chemical formula expressed as Fe100-x-yCuxBy (where x ranges from 0.1 at % to 1.7 at % and y ranges from 2.3 at % to 9.6 at %) and grains with a size from 10 nm to 99 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. The wireless charging apparatus of claim t 2, wherein a near field communication (NFC) antenna is disposed on the soft magnetic sheet.
Specification