Abstract: A sparse routing coil structure for a magnetic coil in a wireless charging system is disclosed. The sparse routing coil structure may include a magnetic coil routed by turns of a wire and a turn spacing S between adjacent turns of the wire. The turn spacing S may be a space between adjacent turns of the wire, and a turn width is denoted as W. A ratio of W/S may be not larger than 10.

Abstract: A method for manufacturing a magnetic coil in a wireless charging system is disclosed. The coil may comprise a wire with a rectangular cross section. The method may include feeding a wire into a routing device which includes three winding wheels; routing the wire into a magnetic coil by changing positions of the winding wheels; and assembling the magnetic coil by pressing and attaching the magnetic coil to a coil holder.

Abstract: The present invention discloses an automatic test system for testing a wireless charging system. The automatic test system may comprise a robot arm, a test plane, a docking station and a control computer. The robot arm is configured to grip a first fixture. The test plane is configured to grip a second fixture. The docking station is connected to the robot arm. The control computer is configured to control the robot arm and receive test data. The second fixture is configured to grip a device under test of the wireless charging system, and the first fixture is configured to grip a test device for testing the device under test and generate test data.

Abstract: The present invention discloses an automatic laser calibration kit for calibrating the distance between a test device of a wireless charging system and a device under test (DUT). The calibration kit may be located in a wireless charging test system. The test system may comprise a test plane for controlling the DUT and a gripping arm for controlling the test device. The calibration kit may comprise: a laser pointer, configured to emit a laser beam; a mirror, positioned on the gripping arm and configured to reflect the laser beam to form a spot on the test plane; and a camera, configured to monitor the position of the spot.

Abstract: An automated testing system for testing a wireless charging system is disclosed. The automated testing system may include a mechanical arm, a testing plane, a dock station and a controller computer. The mechanical arm is configured to hold a first device-under-test (DUT) clamp. The testing plane is configured to hold a second DUT clamp. The dock station is connected to the mechanical arm. The controller computer is configured to control the mechanical arm and receive testing data. The second DUT clamp is configured to hold a device-under-test of the wireless charging system, and the first DUT clamp is configured to hold a testing device for testing the device-under-test and generating the testing data.

Abstract: An automated laser calibration kit for calibrating a distance between a testing device and a device-under-test (DUT) of a wireless charging system is disclosed. The calibration kit may be positioned on a wireless charging testing system. The testing system may comprise a testing plane to hold the DUT and a clamp arm to hold the testing device. The calibration kit may comprise a laser pointer configured to emit a laser beam; a reflection mirror positioned on the clamp arm and configured to reflect the laser beam to form a light point on the testing plane; and a camera configured to monitor a position of the light point.

Abstract: A method is provided for controlling communication in wireless charging. The method comprises: controlling wireless power transfer with a device; receiving a communication signal from the device; generating a jamming signal based on the communication signal from the device; and applying the jamming signal to the communication signal to obtain a jammed communication signal. A device is also provided for controlling communication in wireless charging. The device is configured to control wireless power transfer and receive a communication signal. The device comprises: a jamming circuit configured to generate a jamming signal based on the received communication signal, wherein the device is further configured to apply the jamming signal to the received communication signal to obtain a jammed communication signal.

Abstract: A method for adaptively optimizing wireless charging efficiency is disclosed. The method may comprise providing an input power to a power transmitter, the power transmitter comprising a transmitter-side coil wirelessly coupled to a receiver-side coil of a power receiver, determining, at the power receiver, a real power transferred from the power transmitter, transmitting information associated with the determined real power to the power transmitter through the coupling between the receiver-side coil and the transmitter-side coil, and adjusting, at the power transmitter, the input power in response to determining, according to the transmitted information, that the real power differs from an expected power corresponding to the input power by over a first threshold, causing the real power to tune towards the expected power.

Abstract: A wireless power transfer system is disclosed. The wireless power transfer system may comprise a first group of transmitter coils disposed in a first plane, a second group of transmitter coils disposed in a second plane, and a controller unit configured to: supply a first power to the first group, one or more transmitter coils at a time; compare a first coupling strength of the powered first transmitter coil with a first threshold; in response to determining the first coupling strength exceeding the first threshold, determine the transmitter coil as a selected transmitter coil; supply a second power to the second group, one or more transmitter coils at a time; compare a second coupling strength of the powered second transmitter coil with a second threshold; and in response to determining the second coupling strength exceeding the second threshold, determine the transmitter coil as another selected transmitter coil.

Abstract: A system for wireless electrical charging is disclosed. The system may comprise a charging station and one or more electric devices. The charging station may comprise an input node configured to receive a power input, and a transmitter resonant circuit including a transmitter coupling coil configured to oscillate at a resonant frequency. The one or more electric devices may comprise a receiver resonant circuit including a receiver coupling coil wirelessly coupled to the transmitter coupling coil, and a DC voltage charger configured to charge one or more batteries in the electric device.

Abstract: A wireless charging system, including a power transmitter configured to generate wireless energy, and a power receiver configured to receive wireless energy at a predetermined carrier frequency that could be fixed or tuned during operation. A controller, wherein the controller is configured to activate when the power receiver receives the wireless energy. The controller may be configured to control a load modulation element to generate one or more signals containing relevant information for system operation and performance optimization, and wherein the one or more signals are transmitted via the power receiver.

Abstract: A method may include obtaining historical irradiance data for each of a first and second locations, each of the first and the second locations including first and second solar power generating devices respectively, and forecasting irradiance at the first and the second locations as a first and a second forecast respectively. The method may also include determining a first and a second confidence interval of the first and the second forecasts respectively, the first and the second confidence interval based on the first historical irradiance data and the first forecast and the second historical irradiance data and the second forecast respectively, and modeling covariance between the first and the second confidence intervals. Based on the modeled covariance, the method may include developing an aggregated forecast of irradiance, and sending a message to a device to modify power generation.

Abstract: A method for evaluating a uniformity of a magnetic field generated by a magnetic coil is disclosed. The method may include providing an electrical current to the magnetic coil to generate a magnetic field; scanning and obtaining a set of signals of the magnetic field by moving a measurement probe of a scanning tool point by point within a scanning region of the magnetic field and at a scanning height; performing a spectrum analysis on the set of signals by a spectrum analyzer to extract spectrum information of the magnetic field; transferring the set of signals and the extracted spectrum information to a computer system; selecting signals of the magnetic field with one or more frequencies from the set of signals based on the extracted spectrum information by the computer system; and analyzing the uniformity of the magnetic field by analyzing the selected signals by the computer system.

Abstract: System apparatus and method for providing wireless power transfer (WPT) from a WPT transmitter to a receiver. A switching arrangement is configured to have a first portion of the switching arrangement coupled to a first portion of the WPT transmitter, and a second portion being coupled to a second portion of the WPT transmitter. A controller may determine if a desired amount of power is being provided by an adaptive power supply, wherein the switching arrangement is configured to control the first and second portions of the switching arrangement to selectively operate the adaptive power supply between a single-ended mode and a differential mode to provide the desired amount of power with optimized efficiency.

Abstract: An integrated circuit for wireless power transfer is disclosed. The integrated circuit may comprise a boost controller configured to pump up a system input to a DC input, an oscillator configured to generate a frequency signal, a MOS (metal-oxide-semiconductor) driver coupled to the oscillator, and a power switch coupled to the MOS driver. The MOS driver may be configured to receive the frequency signal and drive the power switch to convert, based on the frequency signal, the DC input to an AC input to a resonant circuit connected to the integrated circuit.

Abstract: An apparatus for charging one or more electric devices. The device may comprise a resonant circuit configured to wirelessly couple to the one or more electric devices, a boost converter configured to convert a system voltage received by the apparatus to an input voltage of a power amplifier that drives the resonant circuit, a sensing circuit configured to detect the input voltage and an associated input current, and a controller. The controller may be configured to receive the detected input voltage and the detected input current, compare the received input voltage and the received input current with stored voltage and current information, identify a difference between the received input voltage and a predetermined voltage according to the stored voltage and current information, and control the boost converter to adjust the input voltage by the identified difference to the predetermined voltage. The adjustment may not need any feedback or communication from the power receiver unit.

Abstract: The invention relates to a process for the manufacture of diazepine derivatives as defined in the description and in the claims.

Abstract: A system disaggregates and estimates power consumption of electric loads powered by a single electrical outlet. The system includes a processor having a routine; a current sensor cooperating with the processor to measure samples for one line cycle of an aggregated current waveform for the electric loads powered by the single electrical outlet; and a voltage sensor cooperating with the processor to measure samples for the one line cycle of a voltage waveform for the electric loads powered by the single electrical outlet. The processor routine transfers the measured samples for the one line cycle of the aggregated current waveform and the voltage waveform into an aggregated voltage-current trajectory for the single electrical outlet, and provides an instantaneous decomposition of power consumption for a plurality of different categories of the electric loads from the aggregated voltage-current trajectory for the one line cycle.

Abstract: Systems, apparatuses and methods for an adaptable tuning circuit for a wireless power transfer system including an inductor and a capacitor. An input may be configured to receive alternate current (AC) power. An RC circuit may include a resistor and a supply capacitor, where a first diode is configured to be forward biased when the AC power is positive for charging the supply capacitor, and a second diode is configured to be forward biased when the AC power is negative for minimizing discharge from the supply capacitor. A tuning logic is provided for controlling power from the supply capacitor to a tuning circuit comprising a tuning capacitor and a switch arrangement, wherein the tuning circuit is configured to be parallel to the capacitor of the wireless power transfer system.

Abstract: A wireless power transfer system is disclosed. The wireless power transfer system may comprise a first group of transmitter coils disposed in a first plane, a second group of transmitter coils disposed in a second plane, and a controller unit configured to: supply a first power to the first group, one or more transmitter coils at a time; compare a first coupling strength of the powered first transmitter coil with a first threshold; in response to determining the first coupling strength exceeding the first threshold, determine the transmitter coil as a selected transmitter coil; supply a second power to the second group, one or more transmitter coils at a time; compare a second coupling strength of the powered second transmitter coil with a second threshold; and in response to determining the second coupling strength exceeding the second threshold, determine the transmitter coil as another selected transmitter coil.