Title:
SHIELDING SHEET FOR WIRELESS CHARGING MODULE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/227645
Kind Code:
A1
Abstract:
A shielding sheet for a wireless charging module and a preparation method therefor, consisting of an outer-ring magnetic sheet (1) and a central magnetic sheet (2). A through hole (3) is formed in the outer-ring magnetic sheet (1); the central magnetic sheet (2) is fitted with the through hole (3); one end of the central magnetic sheet (2) is positioned in the through hole (3); the top surface of the outer-ring magnetic sheet (1) is coplanar with the top surface of the center magnetic sheet (2); the outer-ring magnetic sheet (1) and the central magnetic sheet (2) are formed by laminating a plurality of nanocrystalline strips respectively, and the two adjacent nanocrystalline strips are bonded by means of an insulating adhesive; the magnetic conductivity of the central magnetic sheet (2) is less than that of the outer-ring magnetic sheet (1); an air gap is formed in the nanocrystalline strip of the central magnetic sheet (2). Compared with a conventional nanocrystalline shielding sheet, the number of nanocrystalline strips laminated on the outer-ring magnetic sheet (1) in the shielding sheet is less, thereby facilitating miniaturization of the shielding sheet; moreover, the charging efficiency is also improved; the manufacturing process and costs of the shielding sheet can be reduced.
Inventors:
PANG ZHIHUA (CN)
WANG LEI (CN)
LI JIAHONG (CN)
KANG LAILI (CN)
WANG SHUAI (CN)
LIU KAIHUANG (CN)
WANG LEI (CN)
LI JIAHONG (CN)
KANG LAILI (CN)
WANG SHUAI (CN)
LIU KAIHUANG (CN)
Application Number:
PCT/CN2018/097364
Publication Date:
December 05, 2019
Filing Date:
July 27, 2018
Export Citation:
Assignee:
SUNWAY COMMUNICATION JIANGSU CO LTD (CN)
International Classes:
H02J7/00
Foreign References:
CN106922111A | 2017-07-04 | |||
CN205454369U | 2016-08-10 | |||
CN108076619A | 2018-05-25 | |||
CN107354389A | 2017-11-17 |
Attorney, Agent or Firm:
BORSAM INTELLECTUAL PROPERTY (CN)
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