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Powerbyproxi Limited patents


Recent patent applications related to Powerbyproxi Limited. Powerbyproxi Limited is listed as an Agent/Assignee. Note: Powerbyproxi Limited may have other listings under different names/spellings. We're not affiliated with Powerbyproxi Limited, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "P" | Powerbyproxi Limited-related inventors


Inductive power transmitter, receiver and method of operation

A method of communication of information as to receiver coil type to an inductive power transmitter to enable different modes of operation of inductive power transmitters and/or inductive power transmitters utilizing such information. An inductive power receiver may include a communications circuit for communicating with an inductive power transmitter to transmit information as to the receiver coil type. ... Powerbyproxi Limited

Inductive power transmitter

An inductive power transmitter 2 comprising: at least one power transmitting coil 7 configured to generate an inductive power transfer (ipt) field, and an object detection (od) system 200 configured to detect the presence of an object based on a change in energy decay or change in resonant frequency of a resonant circuit integrated with or coupled to the transmitting coil.. . ... Powerbyproxi Limited

Inductive power transmitter

An inductive power transmitter 2 comprising: a power transmitting coil 7 configured to receive an ac voltage; a capacitor 305 configured to connect in series with the coil 7; and a switch 303 configured to connect in series with the coil 7; wherein the switch 303 is switched based on a variable control effort parameter vctrl configured to determine the current through the coil 7.. . ... Powerbyproxi Limited

Inductive power receiver

An inductive power receiver comprising: a power pick up stage a semi-autonomous converter connected to the power pick up stage; and a controller configured to regulate the power delivered to a load based on at least one control device associated with the converter.. . ... Powerbyproxi Limited

Wireless power transfer adaptor

A wireless power transfer system comprising: a wireless power transfer transmitter having at least one power transmitting coil aligned in a first plane; a wireless power transfer receiver having at least one power receiving coil aligned in a second plane, the first and second planes being non-parallel to one another; and a wireless power transfer adaptor for adapting the power transferred in the first plane to power transferred in the second plane.. . ... Powerbyproxi Limited

Inductive power transmitter

An inductive power transmitter comprising: at least one power transmitting coil configured to generate an inductive power transfer (ipt) field; and an object detection system configured to detect objects in or adjacent a space occupied by the ipt field when generated; wherein the object detection system is configured to detect a receiver object based on a tag associated with the receiver object.. . ... Powerbyproxi Limited

Inductive power receiver

An inductive power receiver having a power pick-up stage and a power rectification and regulation stage consisting of a single current control element configured to rectify the voltage from the power pick-up stage in a first half cycle and to regulate the voltage from the power pick-up stage in a second half cycle.. . ... Powerbyproxi Limited

Inductive power transmitter

An inductive power transmitter 2 comprising: a plurality of transmitter coils 7; a controller 8 configured to selectively energise the coils 7 in order to couple a receiver 3, the coils 7 selected being dependent on an orientation of the receiver 3, a power transfer optimisation algorithm, or a lookup table.. . ... Powerbyproxi Limited

Inductive power receiver

An inductive power receiver 3 comprising: a power pick up stage 9; and a power rectification and regulation stage 10 including a rectifier having a plurality of control devices, wherein at least one of the control devices is a controllable ac switch, wherein the receiver is configured to switch the at least one ac switch according to an open circuit control strategy.. . ... Powerbyproxi Limited

Wirelessly rechargeable battery and components thereof

A receiver coil assembly for a wirelessly rechargeable battery including first and second transverse coils and a third coil encompassing the first and second coils. The receiver coil may be employed in a power receiver of a wirelessly rechargeable battery. ... Powerbyproxi Limited

Converter

An inductive power receiver 3 including at least two switches s1, s2 connected across a resonant circuit 802, the resonant circuit including an inductance and a capacitance, wherein a first switch s1 of the at least two switches is configured to switch into a first state based on a first event dependent on a receiver variable; and the first switch is configured to switch to a second state based on a second event independent of a receiver variable.. . ... Powerbyproxi Limited

Inductive power transfer system

An inductive power transfer transmitter 200 comprising: a transmitting coil 7; a main flyback switch s1 in series with the transmitting coil 7; and an active snubber circuit 202 connected in parallel with the main flyback switch s1; wherein the main flyback switch s1 and the active snubber circuit 202 are configured to provide substantially zero voltage switching. . ... Powerbyproxi Limited

Received wireless power regulation

An inductive power receiver 3 for an inductive power transfer system 1 comprising: a power pick up stage 8 including a receiving coil for receiving power transmitted by a transmitter; a load stage connected to the power pick up stage; a power regulation stage 9 configured to provide an equivalent voltage in series with the power pick up stage 8 wherein the equivalent voltage switches between at least a first amplitude and a second amplitude that is different from the first amplitude; and a controller configured to control the power regulation stage 9 to regulate the power delivered to the load stage.. . ... Powerbyproxi Limited

System for charging electronic devices

A system for charging electronic devices, the system comprising: one or more wireless power transmitters 202, each transmitter having one or more power transmitting elements 212; one or more receiver electronic devices 204 including wireless power receivers, each receiver having one or more power receiving elements 216, the transmitters 202 and receivers 204 being configured to transfer electrical power wirelessly between the transmitting 212 and receiving 216 elements; and one or more non-receiver electronic devices configured to receive electrical power from a power supply via a wired connection, wherein the one or more transmitters 202 are configured to receive electrical power from the power supply via the wired connection of the one or more non-receiver electronic devices.. . ... Powerbyproxi Limited

11/09/17 / #20170324283

Ipt communication system for dynamic pairing

An ipt system 1 including: an ipt transmitter 2 including a drive circuit 6 for varying the current supplied to a primary coil 7; an ipt receiver 3 including a pick up coil 9 magnetically coupled with the primary coil 7; a first magnetic near field communication system for transmitting access data via magnetic coupling between the primary and pick up coils; and a second communication system 13 for transmitting information between the ipt receiver and the ipt transmitter that utilises the access data to encode and decode communications sent via the second communications system.. . ... Powerbyproxi Limited

10/26/17 / #20170310164

Inverter for inductive power transmitter

An inductive power transmitter comprising a plurality of autonomous resonant inverters, wherein each inverter outputs a voltage to a respective transmitter coil/coils for inductive power transfer; and a magnetic coupling structure between the respective transmitter coils, wherein the magnetic coupling structure is configured to determine a phase shift between the output voltage of each inverter. . ... Powerbyproxi Limited

09/28/17 / #20170279313

Inductive power transmitter

An inductive power transmitter comprising: at least two switching elements connected across a resonant circuit, the resonant circuit including an inductance and a capacitance; wherein the transmitter is configured to adjust the value of the capacitance based on a desired operating frequency.. . ... Powerbyproxi Limited

09/14/17 / #20170264140

Inverter for inductive power transmitter

A push-pull inverter for an inductive power transmitter including a dc power supply that supplies power to a first and second branches; a resonant inductor connected between a first node on the first branch and a second node on the second branch; a first switch, switched by a first switching signal, connected between the first node and a common ground; and a second switch, switched by a second switching signal, connected between the second node and the common ground. The first switching signal is based upon the second node when the second node is low and based upon a dc source when the second node is high. ... Powerbyproxi Limited

08/17/17 / #20170237296

System and method for power transfer

A system for inductive power transfer that may selectively transmit power in a plurality of modes based on characteristics of a power receiver and determine which transmitter coils to drive based on received signal strength information. The inductive power transfer transmitter may detect characteristics of the power receiver in order to control the mode of the power transfer and selectively control which transmitter coils are driven based on signal strength information received from a power receiver. ... Powerbyproxi Limited

08/10/17 / #20170229927

Methods for detecting and identifying a receiver in an inductive power transfer system

A method for detecting the presence of a receiver in an inductively coupled power transfer system having a transmitter and receiver. The method includes switching on a transmitter converter at a first frequency, measuring the inrush current and determining whether there is a receiver present. ... Powerbyproxi Limited

07/20/17 / #a method for controlling a converter including a resonant circuit, where the converter is controlled such that control switches are switched into a first state at the occurrence of an event that is related to a dependent variable of the converter and are switched into a second state at the occurrence of an event that is not related to a dependent variable of the converter.

Powerbyproxi Limited

. . ... Powerbyproxi Limited

06/08/17 / #20170163100

Foreign object detection in inductive power transfer field

A method for determining the presence of a foreign object in an inductive power transfer field in which control circuitry of an inductive power system performs the steps of: providing power to a direct current to alternating current converter; providing power from the converter to a transmitter coil in the inductive power transfer field; waiting for the current in the transmitter coil to stabilize; estimating the reactive power in the transmitter coil; estimating the real power in the transmitter coil; and using the estimated reactive power and estimated real power to determine whether a foreign object is present.. . ... Powerbyproxi Limited

05/11/17 / #20170134017

Overcurrent protection circuit

An overcurrent protection circuit for use in a power supply system to control switching on of the circuit. The circuit is connected between a voltage source and a load. ... Powerbyproxi Limited

04/06/17 / #20170098961

Inductive power receiver with resonant coupling regulator

An inductive power receiver including: a resonant circuit having a receiving coil and a tuning network; and rectifier coupled to the resonant circuit and adapted to provide a dc output to a load, wherein the tuning network is controlled to regulate the power provided to the load and includes: a series tuning branch connected from the receiving coil to the rectifier; and a variable shunt tuning branch connected from a node between the series tuning branch and the receiving coil to a common ground on the dc output side of the rectifier.. . ... Powerbyproxi Limited

03/30/17 / #20170092419

Magnetically permeable core and an inductive power transfer coil arrangement

An inductive power transfer coil assembly including: a magnetically permeable core including a base having a pair of spaced apart limbs extending therefrom; and a winding located between and above the pair of spaced apart limbs.. . ... Powerbyproxi Limited

03/23/17 / #20170084388

Magnetically permeable core and inductive power transfer coil arrangement

An inductive power transfer coil arrangement comprising: a first coil assembly including: at least a first magnetically permeable core including a base having first and second limbs extending away therefrom, wherein the first limb is located between two second limbs and extends further from the base than the second limbs, and at least one coil wound about at least one limb; and a second coil assembly including: at least a second magnetically permeable core for use in an inductive power transfer system, including a base having first and second limbs extending away therefrom, wherein the first limb is located between two second limbs that extend further from the base than the second limbs; and at least one coil wound about at least one limb; the first and second magnetically permeable cores being arranged in relatively moveable relationship such that in some relative positions the first and second magnetically permeable cores are opposed such as to provide effective magnetic coupling.. . ... Powerbyproxi Limited

01/26/17 / #20170025901

Low power inductive power receiver

An inductive power receiver including a receiving coil, first capacitor and power conditioning circuitry for providing power to a load. The inductive power receiver also includes a variable capacitance and/or a variable inductance connected in parallel with at least one of the receiving coil and the first capacitor. ... Powerbyproxi Limited

01/05/17 / #20170005525

Coupled-coil power control for inductive power transfer systems

An inductive power transfer device including: a resonant circuit, having a power transfer coil and a power transfer capacitor; a coupling coil, magnetically-coupled to the power transfer coil; a variable impedance; and a controller configured to determine the impedance value of the variable impedance based on predetermined criteria including: substantially regulating power provided to a load; tuning the resonant circuit resonant frequency substantially to a predetermined frequency; adjusting a frequency of a magnetic field associated with the power transfer coil; and/or adjusting an impedance reflected by the power transfer coil to a corresponding coupled power transfer coil.. . ... Powerbyproxi Limited








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