Power supply device
First Claim
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1. A power supply device comprising:
- a power conversion unit configured to convert input power into first power; and
a wireless power supply unit configured to vary a switching frequency for switching the first power and wirelessly transmit the switched first power at one or more resonance frequencies,wherein the wireless power supply unit comprises a first capacitor and a second capacitor each configured to resonate with a first power transmission coil according to respective switching frequencies,wherein the wireless power supply unit comprises;
a switching unit having at least one switch configured to switch the first power from the power conversion unit; and
a resonance unit configured to resonate according to switching of the switching unit to wirelessly transmit the switched power,wherein the switching unit has a half bridge switch including a first switch and a second switch,wherein the resonance unit comprises the first capacitor, the second capacitor, and the first power transmission coil,wherein the first capacitor is connected to a node between the first switch and the second switch of the half bridge switch,wherein the first power transmission coil is connected to the first capacitor in series, andwherein the second capacitor is connected to the first power transmission coil in parallel.
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Abstract
A power supply device may be capable of wirelessly transmitting power at a plurality of resonance frequencies. The power supply device may include: a power conversion unit converting input power into first power; and a wireless power supply unit varying a switching frequency for switching the first power and wirelessly transmitting the switched first power at at least one of a plurality of resonance frequencies.
10 Citations
12 Claims
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1. A power supply device comprising:
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a power conversion unit configured to convert input power into first power; and a wireless power supply unit configured to vary a switching frequency for switching the first power and wirelessly transmit the switched first power at one or more resonance frequencies, wherein the wireless power supply unit comprises a first capacitor and a second capacitor each configured to resonate with a first power transmission coil according to respective switching frequencies, wherein the wireless power supply unit comprises; a switching unit having at least one switch configured to switch the first power from the power conversion unit; and a resonance unit configured to resonate according to switching of the switching unit to wirelessly transmit the switched power, wherein the switching unit has a half bridge switch including a first switch and a second switch, wherein the resonance unit comprises the first capacitor, the second capacitor, and the first power transmission coil, wherein the first capacitor is connected to a node between the first switch and the second switch of the half bridge switch, wherein the first power transmission coil is connected to the first capacitor in series, and wherein the second capacitor is connected to the first power transmission coil in parallel. - View Dependent Claims (2, 3, 4, 5)
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6. A power supply device comprising:
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a power conversion unit configured to convert input power into first power; a wired power supply unit configured to stabilize the first power from the power conversion unit and transmit the stabilized first power wiredly; and a wireless power supply unit configured to vary a switching frequency for switching the first power and wirelessly transmit the switched first power at either one or both of a first resonance frequency and a second resonance frequency, wherein the wireless power supply unit comprises a first capacitor and a second capacitor each configured to resonate with a first power transmission coil according to respective switching frequencies, wherein the wireless power supply unit comprises; a switching unit having at least one switch configured to switch the first power from the power conversion unit; and a resonance unit configured to resonate according to switching of the switching unit to wirelessly transmit the switched power, wherein the switching unit has a half bridge switch including a first switch and a second switch, wherein the resonance unit comprises the first capacitor, the second capacitor, and the first power transmission coil, wherein the first capacitor is connected to a node between the first switch and the second switch of the half bridge switch, wherein the first power transmission coil is connected to the first capacitor in series, and wherein the second capacitor is connected to the first power transmission coil in parallel. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification