Intelligent multi-mode wireless power system
First Claim
1. A method, comprising:
- receiving a signal in a power transferring unit over a first antenna coupled to a communications circuit in the power transferring unit, the communications circuit configured to establish communication between the power transferring unit and a power receiving unit, the signal indicating a range configuration between the power transferring unit and the power receiving unit;
determining whether the power receiving unit is in a near field range or in a far field range of the power transferring unit based on the range configuration; and
transferring wireless power from the power transferring unit to the power receiving unit,wherein transferring wireless power comprises;
generating, in the power transferring unit, a directed energy radio frequency (RF) field on a second antenna from the power transferring unit to the power receiving unit when the signal has a first range configuration indicating the power receiving unit is within a far field range of the power transferring unit, wherein the far field range corresponds to a first distance between the power transferring unit and the power receiving unit;
generating, in the power transferring unit, a resonant inductive field on a source coil, the resonant inductive field being coupled with the power receiving unit, when the signal has a second range configuration indicating the power receiving unit is within at least a near field range of the power transferring unit, wherein the near field range corresponds to a second distance between the power transferring unit and the power receiving unit, wherein the first distance is greater than the second distance; and
switching between the resonant inductive field and the directed energy radio frequency (RF) field when the power transferring unit receives a signal over the first antenna indicating an altered range configuration.
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Accused Products
Abstract
A method is provided that includes identifying, by a power transferring unit, a power receiving unit in a proximity of the power transferring unit. The method further includes determining whether the power receiving unit is in a near field range or in a far range of the power transferring unit, receiving a power status from the power receiving unit and generating, in the power transferring unit and based on the power status information, a directed energy signal from a power transferring unit to the power receiving unit when the power receiving unit is within a far range of the power transmitting unit. The method includes generating, in the power transferring unit and based on the power status, an inductively coupled field that is resonant with the power receiving unit, when the power receiving unit is within at least a near field range of the power transferring unit.
113 Citations
19 Claims
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1. A method, comprising:
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receiving a signal in a power transferring unit over a first antenna coupled to a communications circuit in the power transferring unit, the communications circuit configured to establish communication between the power transferring unit and a power receiving unit, the signal indicating a range configuration between the power transferring unit and the power receiving unit; determining whether the power receiving unit is in a near field range or in a far field range of the power transferring unit based on the range configuration; and transferring wireless power from the power transferring unit to the power receiving unit, wherein transferring wireless power comprises; generating, in the power transferring unit, a directed energy radio frequency (RF) field on a second antenna from the power transferring unit to the power receiving unit when the signal has a first range configuration indicating the power receiving unit is within a far field range of the power transferring unit, wherein the far field range corresponds to a first distance between the power transferring unit and the power receiving unit; generating, in the power transferring unit, a resonant inductive field on a source coil, the resonant inductive field being coupled with the power receiving unit, when the signal has a second range configuration indicating the power receiving unit is within at least a near field range of the power transferring unit, wherein the near field range corresponds to a second distance between the power transferring unit and the power receiving unit, wherein the first distance is greater than the second distance; and switching between the resonant inductive field and the directed energy radio frequency (RF) field when the power transferring unit receives a signal over the first antenna indicating an altered range configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A power receiving unit, comprising:
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a communication circuit coupled to a first antenna; a direct energy radio frequency (RF) unit coupled to a second antenna; a resonant inductive unit coupled to a capture coil; a memory configured to store instructions; and a processor, configured to execute the instructions to cause the power receiving unit to perform steps to; determine whether the power receiving unit is in a near field range or in a far field range of a power transferring unit; send a signal to the power transferring unit over the first antenna coupled to the communications circuit, the communications circuit configured to establish communication between the power transferring unit and the power receiving unit, the signal indicating a range configuration between the power transferring unit and the power receiving unit; and transfer wireless power from the power transferring unit to the power receiving unit, wherein transfer wireless power comprises; receiving a directed energy radio frequency (RF) field on a second antenna from the power transferring unit when the signal has a first range configuration indicating the power receiving unit is within a far field range of the power transferring unit, wherein the far field range corresponds to a first distance between the power transferring unit and the power receiving unit; receiving a resonant inductive field on the capture coil, that is resonant the resonant inductive field being coupled with the power transferring unit, when the signal has a second range configuration indicating the power receiving unit is within at least a near field range of the power transferring unit, wherein the near field range corresponds to a second distance between the power transferring unit and the power receiving unit, wherein the first distance is greater than the second distance; and switching between the resonant inductive field and the directed energy radio frequency (RF) field when the power receiving unit detects a transition from the near field range to the far field range and sends said signal over the first antenna indicating an altered range configuration. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method, comprising:
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determining whether a power receiving unit is in a near field range or in a far field range of a power transferring unit; sending a signal to the power transferring unit over a first antenna coupled to the communications circuit, the communications circuit configured to establish communication between the power transferring unit and the power receiving unit, the signal indicating a range configuration between the power transferring unit and the power receiving unit; and receiving wireless power from the power transferring unit in the power receiving unit, wherein receiving wireless power comprises; receiving, in the power receiving unit, a directed energy radio frequency (RF) field on a second antenna signal from the power transferring unit to the power receiving unit when the signal has a first range configuration indicating the power receiving unit is within a far field range of the power transferring unit, wherein the far field range corresponds to a first distance between the power transferring unit and the power receiving unit; receiving, in the power receiving unit, a resonant inductive field on a capture coil, the resonant inductive field being coupled with the power transferring unit, when the signal has a second range configuration indicating the power receiving unit is within at least a near field range of the power transferring unit wherein the near field range corresponds to a second distance between the power transferring unit and the power receiving unit, wherein the first distance is greater than the second distance; and switching between the resonant inductive field and the directed energy radio frequency (RF) field when the power receiving unit detects a transition from the near field range to the far field range and sends said signal over the first antenna indicating an altered range configuration. - View Dependent Claims (17, 18, 19)
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Specification