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US 10,122,212 B2Granted
Power supply device
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsIn Wha Jeong, Hak Ryong Kim, Hugh Kim, Moo Jong Kang
Life of this patent
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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.
Claims12
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, and
- wherein the second capacitor is connected to the first power transmission coil in parallel.
10 more elements
A power supply device comprising:
- 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.
11 more elements
Dependencies are inferred from the claim text.