公开(公告)号：US20250055327A1

公开(公告)日：2025-02-13

申请号：US18924722

申请日：2024-10-23

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yuechao LI ,  Chao WANG ,  Baoshan WU ,  Changyuan LI

IPC: H02J50/90 ,  H01F7/02 ,  H01F27/28 ,  H02J50/10

Abstract: A wireless charging module, an electronic device, and a charger. The wireless charging module includes a charging coil and a magnetic attachment apparatus. A magnetic attachment apparatus includes a plurality of magnetic attachment units where each one includes a first and a second assembly, and the first and the second assembly are disposed on a same surface in a first direction. The first assembly includes a plurality of magnets those magnetic field directions of which are parallel and opposite to each other, so that lateral magnetic fields cancel each other out, to weaken a magnetic field radiated around or to an inside by the magnetic attachment apparatus. Therefore, a soft magnetic material can be omitted or reduced. An enhancement in magnetic field strength on a side of the magnetic attachment apparatus leads to better limit a location of contact between the electronic device and the charger.