Patent attributes
A wireless charging transmitter includes at least two transmit coils and at least two transmit circuit units; wherein the at least two transmit coils are configured to simultaneously transmit electric energy to an external receive coil, the at least two transmit coils are coupled such that orientations of magnetic fields generated by currents on the at least two transmit coils are not parallel and form a first angle, a coupling coefficient between the at least two transmit coils is less than a predetermined threshold and each of the transmit circuit units is electrically connected to each of the transmit coils and configured to supply a current to the transmit coil. Therefore, the current on each of the transmit coils in the wireless charging transmitter generates a corresponding magnetic field.
