摘要:
A system and method for inductively providing electrical power at a plurality of power levels to electrical devices. The system may include an inductive power outlet unit conductively coupled to a power supply and an inductive power receiver unit associated with the electrical device. The inductive power outlet unit includes a driver device operable to generate power at a plurality of power levels and electrical power is transferred to the electrical device at a power level selected from the plurality of power levels, in accordance with electrical power requirements of the electrical device. The power receiver may be operable in a plurality of modes having a secondary inductor configured to operate selectively with a plurality of inductance values.
摘要:
A control circuit for an inductive power outlet configured to transfer power to an inductive power receiver includes a resonant circuit having a characteristic resonant peak and connected to a primary coil configured to inductively couple with a secondary coil of the inductive power receiver, a frequency driver operable to provide a driving voltage oscillating at an operating frequency higher than the characteristic resonant peak of the resonant circuit across the primary coil, a magnitude detector operable to monitor primary coil voltage, and a data demodulator operable to detect modulated peaks in primary coil voltage indicating that a communications modulator of the inductive power receiver has transitioned from a first state to a second state. The communications modulation determines a characteristic frequency of the peaks and extracts modulated data sent in communication signals from the inductive power receiver.
摘要:
An adjustable inductive power transmission platform includes inductive power outlets embedded into adjustable modules having multiple configurations. The inductive power outlets are configured to couple with inductive power receivers to provide power to electrical loads wired thereto. The multiple configurations of the adjustable modules allow the position of the inductive power outlets to be adjusted to match the locations of inductive receivers to suit changing requirements.
摘要:
An inductive power transfer system operable in a plurality of modes comprising an inductive power transmitter capable of providing power to the inductive power receiver over an extended region. The system may be switchable between the various modes by means of a mode selector operable to activate various features as required, such as: an alignment mechanism a resonance tuner, an auxiliary coil arrangement or a resonance seeking arrangement. Associated methods are taught.
摘要:
A system and method for inductively providing electrical power at a plurality of power levels to electrical devices. The system may include an inductive power outlet unit conductively coupled to a power supply and an inductive power receiver unit associated with the electrical device. The inductive power outlet unit includes a driver device operable to generate power at a plurality of power levels and electrical power is transferred to the electrical device at a power level selected from the plurality of power levels, in accordance with electrical power requirements of the electrical device. The power receiver may be operable in a plurality of modes having a secondary inductor configured to operate selectively with a plurality of inductance values.
摘要:
A pinless power plug for receiving wireless power from a pinless power jack, comprises at least one secondary coil for inductively coupling with a primary coil. The primary coil is associated with the pinless power jack. The primary coil is shielded behind an insulating layer. The pinless power jack further comprises at least two magnetic anchors arranged around a perimeter of the at least one secondary coil in an annular configuration concentric and non-overlapping with the at least one secondary coil. The at least two magnetic anchors are configured to magnetically couple with at least two magnetic snags in the pinless power jack.
摘要:
A pinless power plug for receiving wireless power from a pinless power jack is disclosed The pinless power plug comprises at least one secondary coil for inductively coupling with a primary coil. The primary coil is associated with the pinless power jack. The primary coil is shielded behind an insulating layer. The pinless power jack comprises one or more magnetic anchors arranged around the at least one secondary coil in an annular configuration concentric with the at least one secondary coil. The one or more magnetic anchors are configured to magnetically couple with one or more magnetic snags in the pinless power jack. The one or more magnetic anchors are configured to magnetically couple with the one or more magnetic snags and maintain alignment between the at least one secondary coil and the primary coil.
摘要:
An inductive power outlet for wirelessly powering a power receiver is presented that comprises a voltage peak detector that is configured to detect voltage changes that are indicative of increase in a system resonant frequency. The inductive power outlet is configured to respond to detected voltage changes by shutting down or issuing a warning, and the voltage peak detector is further used to detect communication signals initiated by the power receiver to the power outlet.
摘要:
A pinless power plug for receiving wireless power from a pinless power jack is disclosed The pinless power plug comprises at least one secondary coil for inductively coupling with a primary coil. The primary coil is associated with the pinless power jack. The primary coil is shielded behind an insulating layer. The pinless power jack comprises one or more magnetic anchors arranged around the at least one secondary coil in an annular configuration concentric with the at least one secondary coil. The one or more magnetic anchors are configured to magnetically couple with one or more magnetic snags in the pinless power jack. The one or more magnetic anchors are configured to magnetically couple with the one or more magnetic snags and maintain alignment between the at least one secondary coil and the primary coil.
摘要:
A method of detecting a foreign object presence between a wireless power transmitter and a wireless power receiver, the wireless power transmitter comprising a primary coil for transferring power wirelessly to a secondary coil of the wireless power receiver, comprises: transmitting a calibration ping signal; measuring and recording decay time of the calibration ping signal; transmitting test ping signal; measuring and recording decay time of the test ping signal; and determining the foreign object presence if the decay time of the test ping signal is smaller than decay time of the calibration ping signal and if an absolute value of a difference between them is above a threshold. In addition, or alternatively, a self-frequency of a decaying calibration ping signal is measured and recorded; a self-frequency of a decaying test ping signal is measured and recorded; and the foreign object presence is determined if a difference between the self-frequency of the decaying test ping signal and the self-frequency of the decaying calibration ping signal falls outside a predetermined value.