Wireless power receiver, terminal and wireless power transmitter
First Claim
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1. A wireless power receiver for wirelessly receiving power from a wireless power transmitter, the wireless power receiver comprising:
- a coil to receive the power;
an electric steel sheet to generate an intensity of a magnetic flux density sensed by a sensor of the wireless power transmitter;
a shielding member disposed on an upper surface of the coil and an upper surface of the electric steel sheet; and
a printed circuit board disposed on the shielding member, wherein electronic components including a power source, an AC power generating unit, and a control unit are mounted on the printed circuit board,wherein the coil has an empty central region,wherein the electric steel sheet is disposed in the empty central region of the coil,wherein the coil and the electric steel sheet are disposed on a same surface,wherein the coil surrounds the electric steel sheet, andwherein the coil and the electric steel sheet are adhered to a back surface of the shielding member by an adhesive.
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Abstract
A wireless power receiver includes a coil to receive the power; and a magnet to generate an intensity of a magnetic flux density sensed by a sensor of the wireless power transmitter. The coil has an empty central region. The magnet is disposed in the empty central region of the coil. The magnet includes an electric steel sheet.
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Citations
16 Claims
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1. A wireless power receiver for wirelessly receiving power from a wireless power transmitter, the wireless power receiver comprising:
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a coil to receive the power; an electric steel sheet to generate an intensity of a magnetic flux density sensed by a sensor of the wireless power transmitter; a shielding member disposed on an upper surface of the coil and an upper surface of the electric steel sheet; and a printed circuit board disposed on the shielding member, wherein electronic components including a power source, an AC power generating unit, and a control unit are mounted on the printed circuit board, wherein the coil has an empty central region, wherein the electric steel sheet is disposed in the empty central region of the coil, wherein the coil and the electric steel sheet are disposed on a same surface, wherein the coil surrounds the electric steel sheet, and wherein the coil and the electric steel sheet are adhered to a back surface of the shielding member by an adhesive. - View Dependent Claims (2, 3, 4, 5)
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6. A terminal for wirelessly receiving power from a holder, the terminal comprising:
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a cover facing the holder; a coil disposed on the cover to receive the power; an electric steel sheet to generate an intensity of a magnetic flux density sensed by a sensor of the holder; a shielding member disposed an upper surface of the coil and an upper surface of the electric steel sheet; and a printed circuit board disposed on the shielding member, wherein electronic components including a power source, an AC power generating unit, and a control unit are mounted on the printed circuit board, wherein the electric steel sheet is surrounded with the coil, disposed in a central region of the coil, wherein the coil and the electric steel sheet are disposed on a same surface, and wherein the coil and the electric steel sheet are adhered to a back surface of the shielding member by an adhesive. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A wireless power transmitter comprising:
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a power source; an AC power generating unit to receive power from the power source to generate AC power; a transmission coil to transmit the AC power generated from the AC power generating unit to a wireless power receiver; a first magnet in a central region of the transmission coil; a sensor to provide a first voltage signal corresponding to a magnetic flux density of the first magnet and a second voltage signal corresponding to the magnetic flux density of the first magnet and a magnetic flux density of a second magnet of the wireless power receiver; and a control unit that controls the transmission coil to transmit the AC power when a variation degree between the first and second voltage signals is equal to or greater than a threshold value. - View Dependent Claims (13, 14, 15, 16)
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Specification