Wireless power transmission system
AssigneeMakita Corporation
InventorTomoyuki MIZOJIRI
Life of this patent
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Abstract
One aspect of the present disclosure provides a wireless power transmission system including a power transmission device and a power receiving device. The power receiving device includes a first power receiving circuit including three receiving coils connected in a delta configuration. The three receiving coils are configured (i) to be magnetically coupled with two or more transmitting coils in the power transmission device and (ii) to output a first polyphase AC power in response to two or more single-phase alternating currents being supplied to the two or more transmitting coils, respectively.
Claims10
A wireless power transmission system comprising:
- a power transmission device and a power receiving device,
- the power transmission device including:
- a first power transmission circuit including two or more transmitting coils, the two or more transmitting coils being separated from each other;
- and
- a power supply circuit configured to supply two or more single-phase alternating currents to the two or more transmitting coils, respectively, the two or more single-phase alternating currents having an identical frequency but differing in phase from each other, and
- the power receiving device including:
- a first power receiving circuit including three receiving coils connected in a delta configuration, the three receiving coils being configured (i) to be magnetically coupled with the two or more transmitting coils and (ii) to output a first polyphase AC power in response to the two or more single-phase alternating currents being supplied to the two or more transmitting coils, respectively;
- and
- a conversion circuit configured to convert the first polyphase AC power into first DC power.
A power transmission device comprising:
- a transmission circuit including three transmitting coils, the three transmitting coils being separated from each other;
- and
- a power supply circuit configured to supply three single-phase alternating currents to the three transmitting coils, respectively, the three single-phase alternating currents having an identical frequency but differing in phase from each other by 120 degrees,
- wherein the three transmitting coils are configured to receive the three single-phase alternating currents to thereby simulate a delta configuration.
Dependencies are inferred from the claim text.