A wireless power transfer device is disclosed that includes at least a first coil layer and a second coil layer, each coil layer including two coil windings positioned adjacent to one another in a lateral direction; wherein the two coil windings in each corresponding coil layer are connected in…
Systems and methods for wireless charging of a battery pack. One system includes a plurality of battery packs and a wireless charger. Each of the plurality of battery packs includes a receiving antenna configured to convert an alternating current power to a charging current. The wireless charger…
Systems, methods, and computer-readable media are disclosed for wireless charging of industrial equipment. In one embodiment, an example system may include a first mat configured to wirelessly charge a first device and a second device, the first mat having a first charging coil disposed in a first…
A multiphase wireless power transfer pad has at least a first coil and a second coil and permeable material which includes a region of reduced magnetic permeability configured to minimise coupling between the first and second coils.
A wireless power transmission apparatus includes a first power transmission coil configured to transmit power to a power reception coil, and including a portion with a first conductor width and a portion with a second conductor width, and a second power transmission coil configured to transmit…
A system for charging a battery is provided. The system including a battery, a sterile barrier for encasing the battery, a charging device including a charging bay, and a charging controller. The battery includes a battery controller. The charging bay includes a first antenna for establishing…
A wireless power transfer system includes a wireless power transmission system and a wireless power receiver system. The wireless power transmission system includes a transmission antenna, a transmission controller, and a transmission power conditioning system. The transmission controller is…
Systems, methods and apparatus for wireless charging are disclosed. A test apparatus has a receiving head configured to provide a measurement signal representative of electromagnetic flux received from one or more transmitting coils of a wireless charging surface, a numerically-controlled stage…
Systems, methods and apparatus for wireless charging are disclosed. One method includes providing a first charging current to a first transmitting coil in a wireless charging device, where the first transmitting coil is coupled to a receiving coil in a first power receiving device, providing a…
A dual-mode multi-coil wireless power transfer system includes a control unit and a transmitter unit. The transmitter unit may wirelessly transmit electric power to an external receiver coil. The transmitter unit include a plurality of transmitter modules. Each of the plurality of transmitter…
Dual-mode transmitter antenna with non-uniform coil array for wireless power transmission is disclosed. The dual mode antenna comprises a primary coil located at center of the dual-mode transmitter antenna and configured to generate concentrated uniform magnetic field in a first mode and a second…
Methods and devices addressing power tracking of transmission systems using antenna arrays are disclosed. The disclosed teachings may be implemented on a channel element to channel element basis, are adaptive and can be implemented on short time durations such as time slots. Power efficiency can be…
A wireless power transfer device is disclosed that includes at least a first coil layer and a second coil layer, each coil layer including two coil windings positioned adjacent to one another in a lateral direction; wherein the two coil windings in each corresponding coil layer are connected in…
A coil assembly for wireless electrical power transmission includes a plurality of external connecting terminals, a power feeding coil, a resonant capacitor electrically connecting with the power feeding coil, and busbars each of which electrically connects between the external connecting terminals.
Systems, methods and apparatus for wireless charging are disclosed. An apparatus has a wireless charging apparatus has a battery charging power source coupled to a charging circuit, a plurality of charging cells configured to provide a charging surface, and a controller. The controller may be…
Wireless charging systems and methods for wirelessly charging batteries for powering surgical instruments. A wireless charging device includes a housing defining wireless charging bays for receiving and charging multiple surgical instrument batteries simultaneously. Power transfer coils and RF…
A charging device has a first printed circuit board (PCB) having a top metal layer and a bottom metal layer, where a first plurality of charging cells is provided on the top metal layer of the first PCB and a second plurality of charging cells is provided on the bottom metal layer of the first PCB…
A wireless transmission module corresponds to an electronic module and is configured to transmit a first signal. The wireless transmission module includes a corresponding surface, a base assembly, and a first coil. The corresponding surface faces the electronic module and is perpendicular to a main…
Provided is a power transmission device including: a plurality of power transmission coils; a power transmission unit configured to wirelessly transmit power to a power receiving device using at least one of the plurality of power transmission coils; a detection unit configured to perform a process…
Embodiments disclosed herein may generate and transmit power waves that, as result of their physical waveform characteristics (e.g., frequency, amplitude, phase, gain, direction), converge at a predetermined location in a transmission field to generate a pocket of energy. Receivers associated with…
A device for inductively charging an electronic accessory includes a first portion, a second portion, and a spacer. The first portion includes a first transmission coil in a first plane where the first transmission coil is configured to generate a first magnetic field, and the second portion…
A wireless power transfer system includes a wireless power transfer device. The wireless power transfer device includes a first transmitting coil oriented along a first axis; a second transmitting coil on the first transmitting coil and oriented along a second axis different from the first axis…
A wireless power transfer system includes a wireless power transfer device. The wireless power transfer device includes a first transmitting coil oriented along a first axis; a second transmitting coil on the first transmitting coil and oriented along a second axis different from the first axis…
A charging control method, a device, a storage medium and a wireless charging base are provided. The charging control method can be applied to a wireless charging base. The wireless charging base comprises a plurality of wireless charging units, each wireless charging unit supports a variety of…
A wireless power transmission device comprises a plurality of transmission coils having different inductances and a controller. The controller wirelessly transmits a first transmission power to the electronic apparatus through a first transmission coil among the plurality of transmission coils…
A transmit end for multi-device wireless charging includes N half-bridge inverter circuits, a multi-coil gating matrix, and a multi-coil module. Input terminals of the N half-bridge inverter circuits are connected to corresponding direct currents, and output terminals of the N half-bridge inverter…
A wireless power transfer system includes a wireless power transfer device configured to determine a magnetic field, from among a plurality of directionally different potential magnetic fields that the wireless power transfer device is configured to generate, that has, at a receiver coil of an…
Circuits, systems and computer readable media transmission of wireless signals in response to incoming signals in a wireless signaling environment. Such a system may include at least one transceiver for receiving an incoming signal via an antenna array from a device in the wireless signaling…
An electronic device includes a plurality of coils, power conversion circuits, demodulation switches, and a processor. The power conversion circuits convert DC power into AC power, and output the AC power to the plurality of coils, respectively. The demodulation switches selectively connect the…
In one aspect, a first device includes a surface onto which objects are placeable and plural wireless chargers electrically connectable to each other. The plural wireless chargers are disposed beneath the surface so a second device can be charged while resting on the surface at various locations.