Invention Grant
- Patent Title: Apparatus and method for performing wireless power transmission on basis of foreign material detection
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Application No.: US16990466Application Date: 2020-08-11
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Publication No.: US11146120B2Publication Date: 2021-10-12
- Inventor: Yongcheol Park , Kyunghwan Kim
- Applicant: LG Electronics Inc.
- Applicant Address: KR Seoul
- Assignee: LG Electronics Inc.
- Current Assignee: LG Electronics Inc.
- Current Assignee Address: KR Seoul
- Agency: Fish & Richardson P.C.
- Priority: KR10-2018-0090089 20180801
- Main IPC: H02J50/60
- IPC: H02J50/60 ; H02J50/80 ; H02J50/10 ; H02J50/40

Abstract:
The present specification provides a wireless power reception apparatus comprising: a power pick-up unit configured to receive wireless power from a wireless power transmission apparatus by magnetic coupling with the wireless power transmission apparatus and convert an AC signal generated by the wireless power into a DC signal; a communication/control unit configured to receive the DC signal from the power pick-up unit and control the wireless power; and a load configured to receive the DC signal from the power pick-up unit. When foreign material is detected before power transmission, wireless power transmission is sustained on the basis of a safe basic power profile of 5 W or less, without interrupting power transmission, and thus, a charging delay can be prevented and the accuracy and reliability of detection of foreign material can be increased despite individual characteristics of the wireless power reception apparatus.
Public/Granted literature
- US20200373789A1 APPARATUS AND METHOD FOR PERFORMING WIRELESS POWER TRANSMISSION ON BASIS OF FOREIGN MATERIAL DETECTION Public/Granted day:2020-11-26
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