General Electric Company

Ge Intellectual Property Licensing, LLC

Dolby Laboratories Corporation

Ge Hybrid Technologies, LLC

Baker Hughes Oilfield Operations LLC

Cytiva Sweden Ab

Ai Alpine US Bidco Inc.

Suma Memana Narayana Bhat

Viswanathan Kanakasabai

Adnan Kutubuddin Bohori

Somakumar Ramachandrapanicker

Deepak Aravind

Arun Kumar Raghunathan

Subbarao Tatikonda

Jayanti Ganesh

Satishbabu Bhogineni

Rahul Bhujade

Jayanti Navilgone Ganesh

Joginder Yadav

James William Bray

Rupam Basak

Arvind Kumar Tiwari

Mahendra Madhukar Patil

Kalaga Murali Krishna

Aparna Chakrapani Sheila-Vadde

Lohit Matani

Sukla Chandra

Ajith Kuttannair Kumar

Bret Dwayne Worden

Christof Martin Sihler

Vikram Reddy Melapudi

Rajendra Naik

Nagapriya Kavoori Sethumadhavan

Manoj Kumar Koyithitta Meethal

Andreas Axen

Markus Kraus

Vandana Prabhakar Rallabandi

Anton Max Linz

Prafull Sharma

Jeffrey Neal Slotnick

William John Bonneau

Hanish Lakhani

Rahul Radhakrishna Pillai

Victor Jose

Veena B N Rao

Chinmoy Goswami

Srinivas Satya Sai Mallampalli

Purbasha Halder

Daniel Garcia

Rijin Saseendran

Vipin Velayudhan

Dinkar Agrawal

Neeraj Kamal Singh Kumar

Jay Chakraborty

Thomas Martin Mai

Tamer Fahed Khalaf

Jason Monclair Pittman

Praful Sharma

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

This disclosure provides systems, methods and apparatuses for foreign object detection (FOD) in a wireless power transfer (WPT) system. Some implementations relate generally to the use of detection coils that are excited to measure and compare a differential current through a coil pair that includes at least two detection coils. A foreign object may cause a change in impedance for one or more detection coils compared to one or more other detection coils. By detecting the differential current of the coil pair, a detection apparatus may determine that a foreign object is in proximity to one of the detection coils of the coil pair. This disclosure provides several options for the design, construction, layout, and operations of detection coils to improve foreign object detection.

Foreign object detection in a wireless power transfer system

A detection device () includes a detection mat () having a plurality of detection coils (), and at least one pair of groups of detection coils (), the pair of groups of detection coils () includes first and second groups of detection coils (). The first and second group of detection coils () comprises first and second first and second impedance values. The detection device () includes one or more drive sub-systems () and a comparison sub-system (). The drive sub-systems () are operatively coupled to the detection mat () and configured to excite at least one pair of groups of detection coils (). The comparison sub-system () is operatively coupled to the detection mat () and configured to receive a differential current signal from the pair of groups of detection coils (), the comparison sub-system () is configured to generate a control signal based on the differential current signal.

Device, system and method for detection of a foreign object

A receiver unit of a wireless power transfer system is presented. The receiver unit includes a main receiver coil, a plurality of auxiliary receiver coils disposed about a central axis of the main receiver coil, and a receiver drive subunit. The receiver drive subunit includes a main converter operatively coupled to the main receiver coil and having a main output terminal. The receiver drive subunit may include a plurality of auxiliary converters operatively coupled to the plurality of auxiliary receiver coils. The plurality of auxiliary converters may be operatively coupled to each other to form an auxiliary output terminal coupled in series to the main output terminal to form a common output terminal. In some implementations, the receiver drive unit may be formed on a substrate of an integrated electronic component. The integrated electronic component may further include a communication subunit and a controller disposed.

Receiver unit of a wireless power transfer system

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

This disclosure provides systems, methods and apparatuses for wireless power transmission and reception. A wireless power transmission apparatus may include a primary coil that transmits power to a corresponding secondary coil in a wireless power reception apparatus. The wireless power transmission apparatus may configure characteristics of the wireless power transmission based on a load setting of a wireless power reception apparatus. The wireless power transmission apparatus may take into account a coupling factor and power transfer characteristics of the wireless power reception apparatus in determining a configuration of the wireless power transmission from the wireless power transmission apparatus to the wireless power reception apparatus. In some implementations, a change in wireless power transmission may occur based on a corresponding change in the load. For example, the change in wireless power transmission and the corresponding change in the load may occur in relation to a synchronization event.

Wireless power for a variable load

This disclosure provides systems, methods and apparatuses for a new communication technique between a wireless power transmission apparatus and a wireless power reception apparatus. The new communication technique may be more efficient for communication of a feedback parameter or other control information compared to a legacy packet-based digital communication technique. The new communication technique may use a pulse width modulation (PWM) signal as an analog representation of a feedback parameter or other control information. In some implementations, the PWM communication technique in this disclosure can be used for a variety of control or feedback information from the wireless power reception apparatus to the wireless power transmission apparatus. Furthermore, in some implementations, the PWM communication technique may be used for feedforward information from the wireless power transmission apparatus to the wireless power reception apparatus.

Pulse width communication in a wireless power system

This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for wireless power transmission. A wireless power receiving apparatus may be configured to combine power from multiple wireless power signals. In some implementations, the wireless power receiving apparatus may combine wireless power received from multiple secondary coils to provide a combined wireless power signal to a load, such as a battery charger or electronic device. In some implementations, each set of primary coil and secondary coil may utilize low power wireless power signals (such as 15 Watts or less) in accordance with a wireless charging standard. By combining power from multiple low power wireless power signals, the wireless power receiving apparatus may support higher power requirements of an electronic device. The disclosed designs may minimize electromagnetic interference (EMI) and provide greater efficiency of wireless power transfer.

Wireless power transfer with load sharing receivers

This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for wireless power transmission. A wireless power transmission apparatus (such as a charging pad) may provide multiple wireless power signals to a wireless power receiving apparatus. The wireless power receiving apparatus may combine wireless power received from multiple secondary coils to provide a combined wireless power signal to a load, such as a battery charger or electronic device. In some implementations, each set of primary coil and secondary coil may utilize low power wireless power signals (such as 15 Watts or less) in accordance with a wireless charging standard. By combining wireless energy from multiple low power wireless power signals, the wireless power receiving apparatus may support higher power requirements of an electronic device. The disclosed designs may minimize electromagnetic interference (EMI) and provide greater efficiency of wireless power transfer.

Wireless power transmission using multiple transmitters and receivers

One innovative aspect of the subject matter described in this disclosure can be implemented in a wireless power reception apparatus. In some implementations, the wireless power reception apparatus may include a ferrite layer including a void. The wireless power reception apparatus may also include a first secondary coil configured to generate first power in cooperation with one or more primary coils of a wireless power transmission apparatus, where at least a portion of the first secondary coil resides in the void of the ferrite layer. The wireless power reception apparatus may also include one or more second secondary coils configured to generate second power in cooperation with the one or more primary coils of the wireless power transmission apparatus, where a portion of the second secondary coil is overlaying the portion of the first secondary coil residing in the void of the ferrite layer.

Overlapping secondary coils in a wireless power reception apparatus

A method includes utilizing a detection device comprising a detection mat having a plurality of detection coils, and at least one pair of groups of detection coils having a first group of detection coils and a second group of detection coils, and where the first group of detection coils includes a first impedance value, and a second group of detection coils includes a second impedance value. The method further includes determining alignment parameters representative of electromagnetic coupling between at least one pair of groups of detection coils of the detection mat and an electromagnetic field generated by an apparatus coil, and comparing the alignment parameters with a reference. The method also includes generating a control signal indicative of an alignment position of the apparatus coil with respect to the detection mat based on the compared alignment parameters.

System and method for determining an alignment of an apparatus coil

A bio-processing system () for wirelessly powering one or more sensors (-) is presented. The system () includes bio-processing units (-), process supporting devices (-), energy sources (-), and sensors (-) including an energy harvesting unit () and an energy storage unit (). The system () includes a power management subsystem () wirelessly coupled to the sensors (-) and including a processor () configured to wirelessly monitor energy consumption of the sensors (-) and a level of energy stored in corresponding energy storage units (), select at least one sensor (-) based on the energy consumption of the sensors (-) and corresponding levels of energy stored in the energy storage units (), and identify at least one active energy source (-) as a power source, where the identified power source is configured to wirelessly transfer power to the selected sensor (-).

System and method for wirelessly powering a sensor in a bio-processing environment

Growing community of inventors

Bengaluru, India

Suma Memana Narayana Bhat