Invention Grant
- Patent Title: Wireless power transfer system and devices
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Application No.: US16836384Application Date: 2020-03-31
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Publication No.: US11588356B2Publication Date: 2023-02-21
- Inventor: Jeffrey Douglas Louis
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Fletcher Yoder PC
- Main IPC: H02J50/60
- IPC: H02J50/60 ; H02J7/02 ; H02J50/80 ; H02J50/10

Abstract:
A wireless power transmission system comprising a wireless power transmitting device and a wireless power receiving device. The wireless power receiving device is configured to regulate power drawn during a power transfer phase to maintain a substantially steady power level that is less than or equal to a power consumption level demanded by an associated load. The wireless power transmitting device is configured to determine the presence of a foreign object by monitoring the power transmitted or the power received and identifying a characteristic change in steady state power indicative of the presence of a foreign object.
Public/Granted literature
- US20210013749A1 Wireless power transfer system and devices Public/Granted day:2021-01-14
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