System and method for inductive charging of portable devices
Abstract:
An electronic device for inductive power transfer with a second electronic device is disclosed. The electronic device includes an inductive coil and a permanent magnet structure for creating a magnetic attachment between the electronic device and the second electronic device. The permanent magnet structure is positioned around an outer perimeter of the inductive coil to align the inductive coil with a second inductive coil in the second electronic device for inductive power transfer. The permanent magnet structure forms a ring that includes a gap and includes one or more arc-shaped permanent magnets. The permanent magnet structure is configured such that the electronic device can be rotated across a continuous range of rotational angles with respect to the second electronic device while keeping the alignment between the inductive coil and the second inductive coil during inductive power transfer.
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