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Apple Patent Describes “Realistic & Practical” Wireless Charging

Apple has been researching a “realistic and practical” way to provide wireless charging to devices. A new patent application uncovered by AppleInsider describes a method of charging devices up a meter away from the charging source.

Apple set up the problem it is trying to solve by saying, “Historically, transferring power wirelessly has been successful for fairly limited applications. In particular, only those applications where a wireless power source and a wireless power receiver are located very close to each other have been successful.”

Those devices have to connect inductively, and Apple said that this works well with devices that need a very low amount of power. The company wants to provide a way of doing this for devices that need more power, and described a method for doing so.

According to the patent application, “It has been discovered [] that usable power can be transferred wirelessly from a power source to a receiver located within a distance referred to as a near field. […] In this way, a realistic and practical approach to wireless transferring usable amounts of power over distances suitable for limited applications can be realized.”

The application specifies that this method will transfer “a relatively large amount of power,” or a few watts, to devices about a meter or so away. Here, this image filed with the application should clear up any questions you have:

Apple Patent Image

Apple Patent Filing


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