Wireless power reception apparatus, wireless power transmission apparatus, and wireless power transmission and reception system
First Claim
1. A wireless power reception apparatus for wirelessly receiving electric power transferred from a power transmission apparatus, the power transmission apparatus including a power transmitter and a power supply supplying AC power to the power transmitter, the wireless power reception apparatus comprising:
- a power receiver capable of wirelessly receiving electric power from the power transmitter; and
a controller performing positional alignment between the power receiver and the power transmitter, the controller;
performing a first adjustment for arranging the power transmitter and the power receiver at respective predetermined position;
performing a second adjustment for arranging the power transmitter and the power receiver at respective positions that produce a higher electric power reception efficiency than the positions where the power transmitter and the power receiver are arranged by the first adjustment; and
setting an impedance of the power transmitter or the power receive so that a power receivable range that can be received by the power receiver when the first adjustment is performed is wider than a power receivable range that can be received by the power receiver when the second adjustment is performed.
1 Assignment
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Accused Products
Abstract
A power transmission apparatus includes a power transmission unit and a power supply unit. A wireless power reception apparatus includes a power reception unit capable of wirelessly receiving electric power from the power transmission unit, and a control unit performing control for positional alignment between the power reception unit and the power transmission unit and for reception of electric power after the positional alignment. The magnitude of electric power received by the power reception unit from the power transmission unit is used for positional alignment between the power reception unit and the power transmission unit. The control unit sets a parameter of a power transmission and reception path so that a power receivable range that can be received by the power reception unit at any time while positional alignment is done is wider than that when electric power is received after the positional alignment.
49 Citations
17 Claims
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1. A wireless power reception apparatus for wirelessly receiving electric power transferred from a power transmission apparatus, the power transmission apparatus including a power transmitter and a power supply supplying AC power to the power transmitter, the wireless power reception apparatus comprising:
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a power receiver capable of wirelessly receiving electric power from the power transmitter; and a controller performing positional alignment between the power receiver and the power transmitter, the controller; performing a first adjustment for arranging the power transmitter and the power receiver at respective predetermined position; performing a second adjustment for arranging the power transmitter and the power receiver at respective positions that produce a higher electric power reception efficiency than the positions where the power transmitter and the power receiver are arranged by the first adjustment; and setting an impedance of the power transmitter or the power receive so that a power receivable range that can be received by the power receiver when the first adjustment is performed is wider than a power receivable range that can be received by the power receiver when the second adjustment is performed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wireless power transmission apparatus for wirelessly transmitting electric power to a power reception apparatus, the power reception apparatus including a power receiver and an electrical load apparatus receiving electric power from the power receiver, the wireless power transmission apparatus comprising:
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a power transmitter capable of wirelessly transmitting electric power to the power receiver; a power supply supplying AC power to the power transmitter; and a controller performing positional alignment between the power receiver and the power transmitter, the controller; performing a first adjustment for arranging the power transmitter and the power receive at respective predetermined positions; performing a second adjustment for arranging the power transmitter and the power receiver at respective positions that produce a higher electric power reception efficiency than the positions where the power transmitter and the power receiver are arranged by the first adjustment; and setting an impedance of the power transmitter or the power receiver so that a power receivable range that can be received by the power receiver when the first adjustment is performed is wider than a power receivable range that can be received by the power receiver when the second adjustment is performed. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A wireless power transmission and reception system comprising:
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a wireless power transmission apparatus, including; a power transmitter; and a power supply supplying AC power to the power transmitter; a wireless power reception apparatus for wirelessly receiving electric power transferred from the wireless power transmission apparatus, the wireless power reception apparatus including; a power receiver capable of wirelessly receiving electric power from the power transmitter; and an electrical load apparatus using electric power received by the power receive; and a controller performing positional alignment between the power receiver and the power transmitter, the controller; performing a first adjustment for arranging the power transmitter and the power receiver at respective predetermined positions; performing a second adjustment for arranging the power transmitter and the power receiver at respective positions that produce a higher electric power reception efficiency than the positions where the power transmitter and the power receiver are arranged by the first adjustment; and setting an impedance of the power transmitter or the power receiver so that a power receivable range that can be received by the power receiver when the first adjustment is performed is wider than a power receivable range that can be received by the power receiver when the second adjustment is performed.
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Specification