POWER SUPPLY DEVICE AND WIRELESS POWER TRANSFER APPARATUS
First Claim
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1. A power supply device comprising:
- an AC power source includinga first converting portion, which receives power from outside and outputs DC power, anda DC/AC converting portion, wherein, when receiving DC power, the DC/AC converting portion converts the DC power into AC power of a predetermined frequency and outputs the AC power; and
a primary coil, which receives the AC power, whereinthe power supply device is capable of wirelessly transferring the AC power to a secondary coil of a power receiving device and further comprises;
a second converting portion, which receives the DC power output from the first converting portion and is capable of converting the DC power into first DC power of a power value that is smaller than a power value of the DC power; and
a switching portion, which switches a source of power for the DC/AC converting portion between the first converting portion and the second converting portion, whereinthe power value of the first DC power is smaller than a power value of a second DC power, which is output from the first converting portion when the source of power for the DC/AC converting portion is the first converting portion,when receiving the second DC power from the first converting portion, the DC/AC converting portion outputs second AC power as the AC power, andwhen receiving the first DC power from the second converting portion, the DC/AC converting portion outputs, as the AC power, first AC power of a power value that is smaller than that of the second AC power.
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Abstract
A power supply device includes an AC/DC converter and a DC/AC converter. The AC/DC converter is capable of converting grid-connected power into DC power having a second DC power value. The DC/AC converter converts DC power into AC power and outputs the converted AC power to a primary coil of a power supply-unit. Furthermore, the power supply device includes a DC/DC converter and a switching relay. The DC/DC converter is capable of converting DC power output from the AC/DC converter into DC power having a first DC power value that is smaller than the second DC power value. The switching relay switches the source of power for the DC/AC converter to the AC/DC converter or the DC/DC converter.
19 Citations
5 Claims
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1. A power supply device comprising:
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an AC power source including a first converting portion, which receives power from outside and outputs DC power, and a DC/AC converting portion, wherein, when receiving DC power, the DC/AC converting portion converts the DC power into AC power of a predetermined frequency and outputs the AC power; and a primary coil, which receives the AC power, wherein the power supply device is capable of wirelessly transferring the AC power to a secondary coil of a power receiving device and further comprises; a second converting portion, which receives the DC power output from the first converting portion and is capable of converting the DC power into first DC power of a power value that is smaller than a power value of the DC power; and a switching portion, which switches a source of power for the DC/AC converting portion between the first converting portion and the second converting portion, wherein the power value of the first DC power is smaller than a power value of a second DC power, which is output from the first converting portion when the source of power for the DC/AC converting portion is the first converting portion, when receiving the second DC power from the first converting portion, the DC/AC converting portion outputs second AC power as the AC power, and when receiving the first DC power from the second converting portion, the DC/AC converting portion outputs, as the AC power, first AC power of a power value that is smaller than that of the second AC power. - View Dependent Claims (2, 3, 4)
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5. A wireless power transfer apparatus comprising:
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an AC power source including a first converting portion, which receives power from outside and outputs DC power, and a DC/AC converting portion, wherein, when receiving DC power, the DC/AC converting portion converts the DC power into AC power of a predetermined frequency and outputs the AC power; a primary coil, which receives the AC power; a secondary coil, which is capable of wirelessly receiving the AC power received by the primary coil; a second converting portion, which receives the DC power output from the first converting portion and is capable of converting the DC power into first DC power of a power value that is smaller than a power value of the DC power; and a switching portion, which switches a source of power for the DC/AC converting portion between the first converting portion and the second converting portion, wherein the power value of the first DC power is smaller than a power value of a second DC power, which is output from the first converting portion when the source of power for the DC/AC converting portion is the first converting portion, when receiving the second DC power from the first converting portion, the DC/AC converting portion outputs second AC power as the AC power, and when receiving the first DC power from the second converting portion, the DC/AC converting portion outputs, as the AC power, first AC power of a power value that is smaller than that of the second AC power.
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Specification