WIRELESS POWER TRANSMISSION APPARATUS, WIRELESS POWER RECEPTION APPARATUS, AND WIRELESS POWER TRANSMISSION AND RECEPTION SYSTEM
First Claim
1. A wireless power transmission apparatus comprising:
- a plurality of first coils receiving electric power from an AC power supply for transmitting the electric power to a power reception apparatus; and
a controller selecting, from said plurality of first coils, a coil to be used for transmission of electric power to said power reception apparatus, based on a position of said power reception apparatus,said plurality of first coils each being configured to be switchable between a first state in which electric power can be transmitted to said power reception apparatus and a second state in which efficiency in transmission of electric power to said power reception apparatus is lower than said first state, andsaid controller setting a coil in said first state that is selected to be used for transmission of electric power, and setting a coil in said second state that is not to be used for transmission of electric power.
1 Assignment
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Accused Products
Abstract
A wireless power transmission apparatus includes: first coils receiving electric power from an AC power supply for transmitting the electric power to a power reception apparatus; and a controller selecting, from the first coils, a coil to be used for transmission of electric power to the power reception apparatus, based on a position of the power reception apparatus. The first coils are each configured to be switchable between a first state in which electric power can be transmitted to the power reception apparatus and a second state in which efficiency in transmission of electric power to the power reception apparatus is lower than the first state. The controller sets a coil in the first state that is selected to be used for transmission of electric power, and sets a coil in the second state that is not to be used for transmission of electric power
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Citations
20 Claims
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1. A wireless power transmission apparatus comprising:
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a plurality of first coils receiving electric power from an AC power supply for transmitting the electric power to a power reception apparatus; and a controller selecting, from said plurality of first coils, a coil to be used for transmission of electric power to said power reception apparatus, based on a position of said power reception apparatus, said plurality of first coils each being configured to be switchable between a first state in which electric power can be transmitted to said power reception apparatus and a second state in which efficiency in transmission of electric power to said power reception apparatus is lower than said first state, and said controller setting a coil in said first state that is selected to be used for transmission of electric power, and setting a coil in said second state that is not to be used for transmission of electric power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A wireless power reception apparatus comprising:
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a plurality of first coils receiving electric power from a power transmission apparatus for transmitting the electric power to an electrical load; and a controller selecting, from said plurality of first coils, a coil to be used for reception of electric power from said power transmission apparatus, based on a position of said power transmission apparatus, said plurality of first coils each being configured to be switchable between a first state in which electric power can be received from said power transmission apparatus and a second state in which efficiency in reception of electric power from said power transmission apparatus is lower than said first state, and said controller setting a coil in said first state that is selected to be used for reception of electric power, and setting a coil in said second state that is not to be used for reception of electric power. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A wireless power transmission and reception system comprising:
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a power reception; and a wireless power transmission apparatus, said wireless power transmission apparatus including; a plurality of first coils receiving electric power from an AC power supply for transmitting the electric power to said power reception apparatus; and a controller selecting, from said plurality of first coils, a coil to be used for transmission of electric power to said power reception apparatus, based on a position of said power reception apparatus, said plurality of first coils each being configured to be switchable between a first state in which electric power can be transmitted to said power reception apparatus and a second state in which efficiency in transmission of electric power to said power reception apparatus is lower than said first state, and said controller setting a coil in said first state that is selected to be used for transmission of electric power, and setting a coil in said second state that is not to be used for transmission of electric power.
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20. A wireless power transmission and reception system comprising:
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a power transmission apparatus; and a wireless power reception apparatus, said wireless power reception apparatus including; a plurality of first coils receiving electric power from said power transmission apparatus for transmitting the electric power to an electrical load; and a controller selecting, from said plurality of first coils, a coil to be used for reception of electric power from said power transmission apparatus, based on a position of said power transmission apparatus, said plurality of first coils each being configured to be switchable between a first state in which electric power can be received from said power transmission apparatus and a second state in which efficiency in reception of electric power from said power transmission apparatus is lower than said first state, and said controller setting a coil in said first state that is selected to be used for reception of electric power, and setting a coil in said second state that is not to be used for reception of electric power.
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Specification