Wireless power transmitting apparatus and method thereof
First Claim
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1. A wireless power transmitting apparatus to wirelessly transmit power to a wireless power receiving apparatus through a transmission resonance coil using resonance, the wireless power transmitting apparatus comprising:
- an AC power generating unit to generate quasi square-wave AC power having quasi square-wave voltage; and
a transmission induction coil to transmit the quasi square-wave AC power to the transmission resonance coil through electromagnetic induction,wherein an input impedance of the wireless power transmitting apparatus has a maximum value at a fundamental frequency component, andwherein the input impedance of the wireless power transmitting apparatus has a minimum value at a second harmonic frequency component, and is increased as an order of a harmonic frequency component is increased from the second harmonic frequency component.
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Abstract
Disclosed is a wireless power transmitting apparatus to wirelessly transmit power to a wireless power receiving apparatus through a transmission resonance coil by using resonance. An AC power generating unit generates quasi square-wave AC power having quasi square-wave voltage. A transmission induction coil transmits the quasi square-wave AC power to the transmission resonance coil through electromagnetic induction.
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Citations
16 Claims
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1. A wireless power transmitting apparatus to wirelessly transmit power to a wireless power receiving apparatus through a transmission resonance coil using resonance, the wireless power transmitting apparatus comprising:
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an AC power generating unit to generate quasi square-wave AC power having quasi square-wave voltage; and a transmission induction coil to transmit the quasi square-wave AC power to the transmission resonance coil through electromagnetic induction, wherein an input impedance of the wireless power transmitting apparatus has a maximum value at a fundamental frequency component, and wherein the input impedance of the wireless power transmitting apparatus has a minimum value at a second harmonic frequency component, and is increased as an order of a harmonic frequency component is increased from the second harmonic frequency component. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of wirelessly transmitting power to a wireless power receiving apparatus through a transmission resonance coil using resonance by a wireless power transmitting apparatus, the method comprising:
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generating quasi square-wave AC power having quasi square-wave voltage; and transmitting the quasi square-wave AC power to the transmission resonance coil through electromagnetic induction, wherein an input impedance of the wireless power transmitting apparatus has a maximum value at a fundamental frequency component, and wherein the input impedance of the wireless power transmitting apparatus has a minimum value at a second harmonic frequency component, and is increased as an order of a harmonic frequency component is increased from the second harmonic frequency component. - View Dependent Claims (9, 10, 11)
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12. A wireless power transmitting apparatus to wirelessly transmit power to a wireless power receiving apparatus through a transmission resonance coil using resonance, the wireless power transmitting apparatus comprising:
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an AC power control unit to generate an AC power control signal; a full-bridge structure transistor circuit part to output quasi square-wave AC power having quasi square-wave voltage based on the AC power control signal; and a transmission induction coil to transmit the quasi square-wave AC power to the transmission resonance coil through electromagnetic induction, wherein an input impedance of the wireless power transmitting apparatus has a maximum value at a fundamental frequency component, and wherein the input impedance of the wireless power transmitting apparatus has a minimum value at a second harmonic frequency component, and is increased at a second harmonic frequency component or more as an order of a harmonic frequency component is increased. - View Dependent Claims (13, 14, 15, 16)
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Specification