Improvement relating to inductive power transfer
AssigneeIntdevice Limited
InventorsLi Jun YU, Hao HAO
Life of this patent
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Abstract
An inductive power transfer receiver. The receiver comprising an inductive power input circuit comprising a tuning circuit with a receiver coil, and a power control circuit for controlling the output power. A controller configured to control the power control circuit. The power control circuit comprises at least one variable reactance component that can be varied to control the output power provided to the load.
Claims12
An inductive power transfer receiver comprising
- an inductive power input circuit comprising:
- a tuning circuit with a receiver coil, and
- a power control circuit for controlling the output power,
- and
- a controller configured to control the power control circuit,
- wherein the power control circuit comprises at least one variable reactance component that can be varied to control the output power provided to the load.
An inductive power transfer receiver according to any preceding claim wherein power control circuit forms part of the tuning circuit.
An inductive power transfer receiver comprising:
- an inductive power input circuit with a topology that can be modelled as a constant current source in series with a variable reactance component,
- wherein the variable reactance component can be varied to control the output power provided to the load.
An inductive power transfer receiver comprising
- an inductive power input circuit comprising:
- a first tuning circuit with a receiver coil,
- a second tuning circuit coupled to
- a load, or
- a rectifier coupled to a load,
- a power control circuit for controlling the output power coupled between the first and second turning circuit, and
- a controller configured to control the power control circuit,
- wherein the power control circuit comprises:
- at least first and second variable reactance components coupled between the first and second tuning circuits, and
- at least one third variable reactance component across the first and second reactance components where they couple to the second tuning circuits
- that can be varied to control the output power provided to the load.
An inductive power transfer receiver comprising
- an inductive power input circuit comprising:
- a first tuning circuit with a receiver coil,
- a second tuning circuit coupled to first turning circuit and
- a load, or
- a rectifier coupled to a load,
- a power control circuit for controlling the output power coupled between the first and second turning circuit, and
- a controller configured to control the power control circuit,
- wherein the power control circuit comprises at least one variable reactance component across the coupling between the first and second tuning circuits that can be varied to control the output power provided to the load.
An inductive power transfer system comprising an inductive power transfer transmitting and an inductive power transfer receiver according to any one of the preceding claims.
An inductive power transfer receiver or system according to any preceding claim further comprising a rectifier for providing DC output power to a load.
Dependencies are inferred from the claim text.