Apple’s AirPower system was abandoned years ago. However, Apple still files or is granted patents that hint at such a charging device. A new one is a patent filing for “Wireless Power Transfer Coil With Insulated Conductive Wires.”
About AirPower
The AirPower (pictured in an image released by Apple almost four years ago) was originally announced in September 2017 alongside the iPhone X. It was supposed to be able to charge a Qi-compatible iPhone, an Apple Watch, and a pair of AirPods (in a special wireless charging case) at the same time regardless of where they were placed on the pad. However, there was constant rumors of production, engineering, and manufacturing difficulties. Seems those rumors were right, as Apple announced in March 2018 that work on the device was being canceled as, in Apple’s words, “will not achieve our high standards.
About the patent filing
The patent related generally to power systems and, more particularly, to wireless power systems for charging electronic devices. In a wireless charging system, a wireless power transmitting device transmits wireless power to a wireless power receiving device. The wireless power receiving device charges a battery and/or powers components using the wireless power. Each one of the wireless power receiving device and the wireless power transmitting device includes a wireless power transfer coil.
Apple says that efficient coupling between the wireless power transfer coils in the wireless power transmitting device and the wireless power receiving device can beneficially promote charge performance, reducing charging time. Apple’s patent involves a wireless power receiving device may be configured to receive wireless power from a wireless power transmitting device. The wireless power receiving device may include a wireless power transfer coil and rectifier circuitry coupled to the wireless power transfer coil.
The wireless power transfer coil may include windings of a wire bundle, the wire bundle may include a plurality of wire units that twist along a length of the wire bundle, each wire unit of the plurality of wire units may include wire subunits that twist along a length of that wire unit, and each wire subunit of the plurality of wire subunits comprises a plurality of insulated conductive wires that twist along a length of that wire subunit.
Summary of the patent filing
Here’s Apple’s abstract of the patent filing: “A wireless charging system may include a wireless power receiving device that receives wireless power signals from a wireless power transmitting device. The wireless power receiving device and the wireless power transmitting device may each include a wireless power transfer coil that comprises windings of a wire bundle having multiple wire units, each wire unit having multiple wire subunits, and each wire subunit having multiple insulated conductive wires.”
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