POWER RECEPTION APPARATUS AND POWER RECEIVING METHOD
First Claim
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1. A power reception apparatus comprising:
- a plurality of power extraction coils that extract power from a coil being a power supply source;
a switch that selects one of the plurality of the power extraction coils and connects the selected power extraction coil to a battery; and
a controller that senses a charging state of the battery and changes over the switch,wherein the plurality of the power extraction coils are different from each other in terms of a diameter, the number of turns, or a distance from the coil being the power supply source.
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Abstract
A power reception apparatus includes a plurality of power extraction coils that extract power from a coil being a power supply source, a switch that selects one of the plurality of the power extraction coils and connects the selected power extraction coil to a battery, and a controller that senses a charging state of the battery and changes over the switch. The plurality of the power extraction coils are different from each other in terms of a diameter, the number of turns, or a distance from the coil being the power supply source.
28 Citations
6 Claims
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1. A power reception apparatus comprising:
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a plurality of power extraction coils that extract power from a coil being a power supply source; a switch that selects one of the plurality of the power extraction coils and connects the selected power extraction coil to a battery; and a controller that senses a charging state of the battery and changes over the switch, wherein the plurality of the power extraction coils are different from each other in terms of a diameter, the number of turns, or a distance from the coil being the power supply source. - View Dependent Claims (3)
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2. A power reception apparatus comprising:
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a power extraction coil that extracts power from a coil being a power supply source and charges a battery; a position control mechanism that controls a positional relation between the coil being the power supply source and the power extraction coil; and a controller that senses a charging state of the battery and controls the position control mechanism. - View Dependent Claims (4)
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5. A power receiving method comprising:
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sensing a charging state of a battery connected to one of a plurality of power extraction coils that extract power from a coil being a power supply source; selecting one of the plurality of the power extraction coils based on the charging state of the battery; and changing over a connection relation between the plurality of the power extraction coils and the battery based on a result of the selecting.
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6. A power receiving method comprising:
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sensing a charging state of a battery connected to a power extraction coil that extracts power from a coil being a power supply source; determining a distance between the coil being the power supply source and the power extraction coil based on the charging state of the battery; and controlling a positional relation between the coil being the power supply source and the power extraction coil based on the determined distance.
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Specification