Swinging coils in multi-coil wireless chargers

A wireless charging device, comprising:

• a plurality of charging coils located at a charging surface of the wireless charging device;
• a plurality of driver circuits, each configured to supply a charging current to one or more of the plurality of charging coils;
• and
• a controller configured to:
• determine that a chargeable device is positioned proximate to a first charging coil in the plurality of charging coils;
• decouple the first charging coil in the plurality of charging coils from a first driver circuit;
• couple the first charging coil to a second driver circuit, wherein a second charging coil in the plurality of charging coils is coupled to the second driver circuit;
• and
• configure the charging current supplied by the second driver circuit to cause the first charging coil and the second charging coil to transfer a desired power level to the chargeable device,
• wherein at least two zones are defined on the charging surface, wherein the first driver circuit is configured to provide current for charging devices through a first zone, and wherein the second driver circuit is configured to provide current for charging devices through a second zone.

A processor readable storage medium, comprising code for:

• determining that a chargeable device is positioned proximate to a plurality of charging coils located at a charging surface of a charging device;
• decoupling a first charging coil in the plurality of charging coils from a first driver circuit of a plurality of driver circuits;
• coupling the first charging coil to a second driver circuit of the plurality of driver circuits after decoupling the first charging coil from the first driver circuit, wherein a second charging coil in the plurality of charging coils is coupled to the second driver circuit;
• and
• initiating power transfer to the chargeable device by causing the second driver circuit to provide a charging current to the first charging coil and the second charging coil,
• wherein at least two zones are defined on the charging surface, wherein the first driver circuit is configured to provide current for charging devices through a first zone, and wherein the second driver circuit is configured to provide current for charging devices through a second zone.