General Electric Company

Dolby Laboratories Corporation

Ge Intellectual Property Licensing, LLC

Arun Kumar Raghunathan

Somakumar Ramachandrapanicker

Suma Memana Narayana Bhat

Viswanathan Kanakasabai

Satishbabu Bhogineni

Deepak Aravind

Rajendra Naik

Adnan Kutubuddin Bohori

Rahul Bhujade

Pradeep Vijayan

Vishnu Mahadeva Iyer

Sivabalan Mohan

Arvind Kumar Tiwari

Kapil Jha

Amol Rajaram Kolwalkar

Sameer Dinkar Vartak

Charles Brendan O'Sullivan

Abhijeet Arvind Kulkarni

Rijin Saseendran

Dinkar Agrawal

Rejendra Naik

Suma Memana Bhat

Charles Brendan O'sullivan

A wireless charging device includes a driver unit configured to generate one of a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Also, the wireless charging device includes a transmitting unit having a first coil and a first capacitor and configured to transmit the first AC voltage signal. Further, the transmitting unit includes a second coil and a second capacitor and configured to transmit the second AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a first receiver device operating at the first frequency based on a change in a first voltage in the transmitting unit, and detect a second receiver device operating at the second frequency based on a change in a second voltage in the transmitting unit.

Wireless charging device, a receiver device, and a method of operating the same

A wireless power transceiver (WPT) device is disclosed. The WPT device includes an energy module and a magnetic interfacing unit comprising a transceiver coil. Further, the WPT device includes a controller configured to generate one of a first control signal and a second control signal based on at least one first parameter of the energy module and at least one second parameter of one of a plurality of external devices. Also, the WPT device includes a bi-directional driver configured to transmit at least one of a first AC signal and a second AC signal through the transceiver coil if the first control signal is received from the controller, and receive at least one of the first AC signal and the second AC signal if the second control signal is received from the controller.

Wireless power transceiver device and an associated method thereof

A contactless power transfer system is provided. The contactless power transfer system includes a first power exchanger coil configured to exchange power. The contactless power transfer system also includes a first power converter operatively coupled to the first power exchanger coil and configured to convert a direct current power to an alternating current power at a system frequency. The contactless power transfer system further includes a controller configured to control an operating state of the first power converter to vary an alternating current power provided to the first power exchanger coil at the system frequency.

Contactless power transfer system and method for controlling the same

A wireless charging device is disclosed. The wireless charging device includes a transmitter detection coil configured to receive a first alternating current (AC) voltage signal having a characteristic associated with a receiver device. Also, the wireless charging device includes a control unit coupled to the transmitter detection coil and configured to detect the receiver device based on the characteristic of the first AC voltage signal. Further, the wireless charging device includes a driver unit coupled to the control unit and configured to convert a direct current (DC) voltage signal of an input power to a second AC voltage signal if the receiver device is detected. In addition, the wireless charging device includes a power transmission coil configured to wirelessly transmit the second AC voltage signal to the receiver device.

Wireless charging device, a receiver device, and an associated method thereof

A charging pad for charging one or more receiver devices is disclosed. The charging pad includes a power drive unit configured to generate a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Further, the charging pad includes a transmitting unit including a single power exchange coil coupled to the power drive unit, wherein the single power exchange coil includes a first coil segment configured to transmit the first AC voltage signal having the first frequency when the first AC voltage signal is received from the power drive unit. Also, the single power exchange coil includes a second coil segment configured to transmit the second AC voltage signal having the second frequency when the second AC voltage signal is received from the power drive unit.

Charging pad and a method for charging one or more receiver devices

A transmitting assembly () configured to transmit electric power in a universal wireless charging device () is presented. The transmitting assembly () includes a first coil () embedded in a printed circuit board () and configured to transmit a first AC voltage signal having a first frequency. Also, the transmitting assembly () includes a second coil () disposed on the printed circuit board () and configured to transmit a second AC voltage signal having a second frequency, wherein the second frequency is different from the first frequency, and wherein the first AC voltage signal having the first frequency and the second AC voltage signal having the second frequency are used to wirelessly charge a plurality of receiver devices () having different frequency standards.

Transmitting assembly for a universal wireless charging device and a method thereof

A wireless charging device includes a power source configured to generate a direct current (DC) voltage signal. Also, the wireless charging device includes a driver unit configured to receive the DC voltage signal and convert the DC voltage signal to a first alternating current (AC) voltage signal. Further, the wireless charging device includes a transmitting unit including a resonant capacitor and a resonant coil, coupled to the driver unit, wherein the transmitting unit is configured to receive and transmit the first AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a receiver device based on a change in at least one of a capacitive voltage across the resonant capacitor and an inductive voltage across the resonant coil if the receiver device is positioned within a predetermined distance from the transmitting unit.

Wireless charging device and a method for detecting a receiver device

A wireless charging device () is disclosed. The wireless charging device () includes a transmitter detection coil () configured to receive a first alternating current (AC) voltage signal having a characteristic associated with a receiver device (). Also, the wireless charging device () includes a control unit () coupled to the transmitter detection coil () and configured to detect the receiver device () based on the characteristic of the first AC voltage signal. Further, the wireless charging device () includes a driver unit () coupled to the control unit () and configured to convert a direct current (DC) voltage signal of an input power to a second AC voltage signal if the receiver device () is detected. In addition, the wireless charging device () includes a power transmission coil () configured to wirelessly transmit the second AC voltage signal to the receiver device ().

A charging pad includes a power drive unit and a transmitting unit. The power drive unit includes a first oscillator to generate a first AC voltage signal having a first frequency, and a first amplifier to amplify the first AC voltage signal. Also, the power drive unit includes a second oscillator to generate a second AC voltage signal having a second frequency, and a second amplifier to amplify the second AC voltage signal. Additionally, the power drive unit includes an adder to combine the amplified first AC voltage signal and the amplified second AC voltage signal. Furthermore, the transmitting unit includes a first frequency coil configured to transmit the amplified first AC voltage signal having the first frequency, and a second frequency coil configured to transmit the amplified second AC voltage signal having the second frequency.

Charging pads and methods for charging receiver devices having different frequency standards

A wireless power transfer system is disclosed. The wireless power transfer system includes a first converting unit for converting a first DC voltage of an input power to a first AC voltage, a contactless power transfer unit for transmitting the input power having the first AC voltage, and a second converting unit for transmitting the power having a second DC voltage corresponding to the first AC voltage to an electric load. Additionally, the wireless power transfer system includes an active voltage tuning unit for controlling the second DC voltage based on a difference between the second DC voltage and a reference voltage and at least one among a difference between the resonant frequency and the constant operating frequency and a difference between a phase angle of the first AC voltage and a phase angle of an AC current.

Growing community of inventors

Bengaluru, India

Arun Kumar Raghunathan