Wireless Charging System With Solenoids

A wireless power receiving device having opposing first and second faces, wherein the wireless power receiving device is configured to receive wireless power signals from a wireless power transmitting device, the wireless power receiving device comprising:

• a housing having a housing wall at the first face;
• a display mounted to the housing at the second face;
• and
• a power receiving solenoid that extends at least partially along the housing wall, that has a solenoid core, and that is configured to receive the wireless power signals from the wireless power transmitting device, wherein the solenoid core comprises a first portion, a second portion extending parallel to the first portion, and a third portion extending from an end of the first portion to an end of the second portion, wherein the power receiving solenoid comprises windings of wire wrapped around at least some of the solenoid core and wherein at least some of the solenoid core is free from windings of wire, wherein the first and second portions of the solenoid core each have an elongated strip shape and the third portion of the solenoid core has a curved shape.

A wristwatch having opposing first and second faces, wherein the wristwatch is configured to receive wireless power signals from a wireless power transmitting device, the wristwatch comprising:

• a housing having a housing wall at the first face;
• a display mounted in the housing at the second face;
• and
• a power receiving solenoid that has a solenoid core and that is configured to receive the wireless power signals from the wireless power transmitting device, wherein the solenoid core has a first strip portion extending along a first longitudinal axis, a second strip portion extending along a second longitudinal axis parallel to the first longitudinal axis, and a curved portion that extends from the first strip portion to the second strip portion, the power receiving solenoid further comprising windings of wire that overlap the curved portion of the solenoid core.