INDUCTIVE POWER TRANSMISSION
First Claim
1. An inductive power transfer system comprising a primary inductor wired to a transmission controller and a power supply via a driver, and operable to inductively couple with a secondary inductor wired to an electric load via a reception circuit, wherein:
- said transmission controller instructs the driver to apply an oscillating driving voltage to said primary inductor in an intermittent pattern comprising an alternation of the driver being in an ON state and an OFF state, characterized by a transmission requirement profile; and
said reception circuit comprises at least one power storage element configured;
to store power received by said secondary inductor when said driving voltage is applied; and
to provide power to said electric load.
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Accused Products
Abstract
An inductive power transfer system comprising a primary inductor wired to a transmission controller and a power supply via a driver, and operable to inductively couple with a secondary inductor wired to an electric load via a reception circuit. The transmission controller instructs the driver to apply an oscillating driving voltage to said primary inductor in an intermittent pattern comprising an alternation of the driver being in an ON state and an OFF state, characterized by a transmission requirement profile. The level of power transmission during the ON state may be the power level at which the inductive power transfer system transfers power with high efficiency. The reception circuit may comprise a power storage element configured to store power received by said secondary inductor when said driving voltage is applied, and to provide power to said electric load.
2 Citations
23 Claims
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1. An inductive power transfer system comprising a primary inductor wired to a transmission controller and a power supply via a driver, and operable to inductively couple with a secondary inductor wired to an electric load via a reception circuit, wherein:
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said transmission controller instructs the driver to apply an oscillating driving voltage to said primary inductor in an intermittent pattern comprising an alternation of the driver being in an ON state and an OFF state, characterized by a transmission requirement profile; and said reception circuit comprises at least one power storage element configured; to store power received by said secondary inductor when said driving voltage is applied; and to provide power to said electric load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 22, 23)
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16. A method for providing inductive power from an electric load via a primary inductor wired to a transmission controller and a secondary inductor wired to the electric load, the method comprising:
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providing a power storage element selectably connectable to said secondary inductor and the electrical load; determining a transmission profile having ON states and OFF states of duration selected to provide power at a required rate; driving said primary inductor at full power during the ON states as according to said transmission profile; storing, in the power storage element, excess power delivered during the ON states; and delivering power from the power storage element to said load during the OFF states. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification