Title:
TRANSFORMER AND MANUFACTURING METHOD THEREFOR, AND ELECTROMAGNETIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/210541
Kind Code:
A1
Abstract:
A transformer and a manufacturing method therefor, and an electromagnetic device, comprising: a substrate (10, 210, 310, 411, 510), a magnetic core (16, 216), an input line layer (24, 31) and a coupling line layer (25, 33), and an electrically conductive member (17), the substrate (10, 210, 310, 411, 510) comprising: a centre part (12, 312) and a peripheral part (14, 314), respectively provided with a plurality of first and second internal conduction holes (132, 134) penetrating through the substrate (10, 210, 310, 411, 510) and a plurality of first and second external conduction holes (152, 154) penetrating through the substrate (10, 210, 310, 411, 510); the magnetic core (16, 216) is accommodated in an annular accommodating groove (18) between the centre part (12, 312) and the peripheral part (14, 314); each side of the substrate (10, 210, 310, 411, 510) perpendicular to the internal conduction holes (13, 213, 313) is provided with an input line layer (24, 31) and a coupling line layer (25, 33 in a stacked arrangement; all of the wiring patterns (22) on the input line layer (14, 31) are input lines and all of the wiring patterns (22) on the coupling line layer (25, 33) are coupling lines, each wiring pattern (22) bridging between a corresponding internal conduction hole (13, 213, 313) and an external conduction hole (15, 215); the electrically conductive member (17) is connected sequentially to the wiring patterns (22) on the input line layer (24, 31) and the coupling line layer (25, 33) to form a coil loop. Each side of the substrate (10, 210, 310, 411, 510) is respectively provided with an input line layer (24, 31) and a coupling line layer (25, 33), increasing the number of input lines and coupling lines, and improving the coupling effect of the transformer (110, 300).
Inventors:
GUO WEIJING (CN)
WANG BEILEI (CN)
ZENG YUHUA (CN)
MIAO HUA (CN)
WANG BEILEI (CN)
ZENG YUHUA (CN)
MIAO HUA (CN)
Application Number:
PCT/CN2018/087825
Publication Date:
November 07, 2019
Filing Date:
May 22, 2018
Export Citation:
Assignee:
SHENNAN CIRCUITS CO LTD (CN)
International Classes:
H01F30/16; H01F27/28
Foreign References:
| CN101553890A | 2009-10-07 | |||
| CN105529157A | 2016-04-27 | |||
| CN103559996A | 2014-02-05 | |||
| CN104737246A | 2015-06-24 | |||
| CN106531716A | 2017-03-22 | |||
| US20080061917A1 | 2008-03-13 |
Attorney, Agent or Firm:
CHINA WISPRO INTELLECTUAL PROPERTY LLP. (CN)
Download PDF:
Previous Patent: ELECTROMAGNETIC ELEMENT AND MANUFACTURING METHOD THEREFOR
Next Patent: INTEGRATED TRANSFORMER AND ELECTRONIC DEVICE
Next Patent: INTEGRATED TRANSFORMER AND ELECTRONIC DEVICE