Systems, methods and apparatus for wireless charging are disclosed. An apparatus includes or operates as a wireless charging device that has a battery charging power source coupled to a charging circuit, a plurality of charging cells provided on a surface of the wireless charging device and a…
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…
Systems, methods and apparatus for wireless charging are disclosed. A wireless charging device has a plurality of charging cells provided on a first surface and a processor configured to provide a charging current to a first charging coil in a surface of the wireless charging device, determine that…
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…
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…
A wireless charging device has a controller and at least one coil that is positioned near the surface of the charging device and configured to transmit an electromagnetic field and a first driver circuit configured to drive the transmitting coil. The controller is configured to cause the driver…
Systems, methods and apparatus for providing a wireless charging device are disclosed. A method for operating the wireless charging device includes transmitting a first pulse through each of a plurality of charging circuits, determining peak voltage at nodes in the plurality of charging circuits…
Systems, methods and apparatus for wireless charging are disclosed. A wireless charging device has a plurality of charging cells provided on a first surface and a processor configured to provide a charging current to a first charging coil in a surface of the wireless charging device, determine that…
Systems, methods and apparatus for wireless charging are disclosed. A method for operating a wireless charging device includes determining that a chargeable device is positioned proximate to a plurality of charging coils provided at a charging surface of the wireless charging device, identifying…
Systems, methods and apparatus for wireless charging are disclosed. A wireless charging device has a resonant circuit including one or more power transmitting coils in a charging surface of the charging device, a driver circuit configured to provide a charging current to the resonant circuit, and a…
Systems, methods and apparatus for wireless charging are disclosed. A wireless charging device has a plurality of planar power transmitting coils arranged in two or more layers between a charging surface and a ferrite layer, and a driver circuit configured to provide a charging current to one or…
Systems, methods and apparatus for wireless charging are disclosed. An apparatus includes or operates as a wireless charging device that has a battery charging power source coupled to a charging circuit, a plurality of charging cells provided on a surface of the wireless charging device and a…
Systems, methods and apparatus for wireless charging are disclosed. A charging device includes a power transmitting coil, a transformer and a driver circuit. The power transmitting coil may be configured to produce an electromagnetic flux centered on an axis that is substantially perpendicular to a…
Systems, methods and apparatus for wireless charging are disclosed. One method performed at a wireless charging device includes initiating transmission of a digital ping at a first power level a transmitting coil of the wireless charging device, increasing power level of the digital ping one or…
Systems, methods and apparatus for wireless charging are disclosed. A charging device has a plurality of charging cells provided on a charging surface, a charging circuit and a controller. The controller may be configured detect the presence of a foreign object in proximity to at least one charging…
Systems, methods and apparatus for wireless charging are disclosed. A charging device has a plurality of charging cells provided on a charging surface, a charging circuit and a controller. The controller may be configured to cause the charging circuit to send pings from a plurality of charging…
Systems, methods and apparatus for wireless charging are disclosed. A charging device has multiple transmitting coils, a driver circuit configured to provide a charging current to the resonant circuit, and a controller. The charging cells may provide a charging surface. The driver circuit may be…
Systems, methods and apparatus for wireless charging are disclosed. A charging device has a charging circuit that includes a charging coil located proximate to a surface of the charging device, a pulse generating circuit, and a controller. The pulse generating circuit may be configured to provide a…
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. A charging device has a plurality of charging cells provided on a charging surface provided at a charging surface of the wireless charging device, and a controller. The controller may be configured to provide a charging current to…
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…
Systems, methods and apparatus for wireless charging are disclosed. A wireless charging device has a plurality of charging cells provided on a first surface and a processor configured to provide a charging current to a first charging coil in a surface of the wireless charging device, determine that…
Systems, methods and apparatus for providing a wireless charging device are disclosed. A method for operating the wireless charging device includes transmitting a first pulse through each of a plurality of charging circuits, determining peak voltage at nodes in the plurality of charging circuits…