Invention Grant
- Patent Title: Device and method for wireless charging
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Application No.: US17198370Application Date: 2021-03-11
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Publication No.: US11881724B2Publication Date: 2024-01-23
- Inventor: Mingi Song , Dohyeon Kim , Seho Park , Wooram Lee
- Applicant: Samsung Electronics Co., Ltd.
- Applicant Address: KR Gyeonggi-do
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Suwon-si
- Agency: Cha & Reiter, LLC
- Priority: KR 20200036036 2020.03.25
- Main IPC: H02J7/00
- IPC: H02J7/00 ; H02J50/40 ; H02J50/80 ; H02J50/60 ; H02J50/12

Abstract:
Provided are a wireless charging device and method. The wireless charging device may include: a first group of coils; a second group of coils; and a processor. The processor may be configured to: transmit a first ping signal through the first group of coils and the second group of coils; sense a change in current, voltage, and/or frequency occurring in the first group of coils and the second group of coils in response to the first ping signal to detect that an electronic device is placed on the wireless charging device; select at least one coil from the first group of coils and at least one coil from the second group of coils at which the change is sensed; transmit a second ping signal through the selected coils; and wirelessly transmit power to the electronic device by using the selected coils. Various other embodiments are also disclosed.
Public/Granted literature
- US20210305848A1 DEVICE AND METHOD FOR WIRELESS CHARGING Public/Granted day:2021-09-30
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