公开(公告)号：EP3809430A1

公开(公告)日：2021-04-21

申请号：EP19917242.0

申请日：2019-10-10

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： ZHU, Yongfa ,  CHEN, Xiaowei ,  DING, Tao ,  ZENG, Zhiqiang ,  YANG, Chang ,  HE, Zhaodong

IPC分类号： H01F27/28

摘要： This application discloses a coil module, a wireless charging transmitting apparatus, a wireless charging receiving apparatus, a wireless charging system, and a mobile terminal. The coil module includes a first planar coil winding, and the first planar coil winding includes a plurality of turns of coils; at least one turn of first coil in the plurality of turns of coils of the first planar coil winding includes at least one first cutting opening, and the first cutting opening divides the first coil into a first outer side part and a first inner side part along an extension direction of the coil; the first outer side part has a first connection end, and the first inner side part has a second connection end; and a first target side part includes a first cutting groove, the first target side part is at least one of the first outer side part and the first inner side part, an extension direction of the first cutting groove is the same as an extension direction of the first target side part, and a width of a single first cutting groove is less than or equal to a width of a single first cutting opening. An eddy current path on the first target side part is cut off to reduce an area through which a magnetic flux passes, so as to reduce a magnetic flux. In this way, an eddy current loss and a circulating current loss are reduced, and charging efficiency is increased.