Title:
COIL MODULE, WIRELESS CHARGING TRANSMITTING DEVICE, WIRELESS CHARGING RECEIVING DEVICE, WIRELESS CHARGING SYSTEM, AND MOBILE TERMINAL
Document Type and Number:
WIPO Patent Application WO/2020/173097
Kind Code:
A1
Abstract:
A coil module, a wireless charging transmitting device, a wireless charging receiving device, a wireless charging system, and a mobile terminal. The coil module comprises a first plane coil winding (L5), and the first plane coil winding (L5) comprises multiple turns of coils; at least one turn of a first coil of the multiple turns of coils of the first plane coil winding (L5) comprises at least one first cutting opening (501), and the first cutting opening (501) divides the first coil into a first outer side portion (501a) and a first inner side portion (501b) in an extending direction of the coil; the first outer side portion (501a) is provided with a first connecting end (503), and the first inner side portion (501b) is provided with a second connecting end (504); a first target side portion comprises a first cutting groove (502), and the first target side portion is at least one of the first outer side portion (501a) and the first inner side portion (501b); the extending direction of the first cutting groove (502) is the same as that of the first target side portion; the width of a single first cutting groove (502) is smaller than or equal to that of a single first cutting opening (501). An eddy current path of the first target side portion is cut off, the area through which a magnetic flux passes is reduced, the magnetic flux is reduced, an eddy current loss and a circulating current loss are reduced, and the charging efficiency is improved.
Inventors:
ZHU YONGFA (CN)
CHEN XIAOWEI (CN)
DING TAO (CN)
ZENG ZHIQIANG (CN)
YANG CHANG (CN)
HE ZHAODONG (CN)
CHEN XIAOWEI (CN)
DING TAO (CN)
ZENG ZHIQIANG (CN)
YANG CHANG (CN)
HE ZHAODONG (CN)
Application Number:
PCT/CN2019/110297
Publication Date:
September 03, 2020
Filing Date:
October 10, 2019
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H01F27/28
Foreign References:
| CN109887724A | 2019-06-14 | |||
| CN108565102A | 2018-09-21 | |||
| CN108321914A | 2018-07-24 | |||
| CN107068357A | 2017-08-18 | |||
| CN207651331U | 2018-07-24 | |||
| US20130307469A1 | 2013-11-21 | |||
| CN201910151680A | 2019-02-28 |
Other References:
See also references of EP 3809430A4
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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