Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Patch magnetic element and manufacturing method thereof

A magnetic component and patch technology, which is applied in the manufacture of inductors/transformers/magnets, electrical components, inductors with magnetic cores, etc., can solve problems such as crossover of inductive and outgoing lines, interference from peripheral devices, and poor high-frequency characteristics. Achieve the effects of small DC resistance, improved reliability, and high Q value characteristics

Active Publication Date: 2021-06-22
墨尚电子科技(江苏)有限公司
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the influence of the high frequency trend, the former often leads to poor high frequency characteristics or even poor high frequency characteristics due to the crossover of winding wires and forming under pressure; RF inductors need to be able to control the inductance more accurately and obtain better Q value
[0003] The existing power inductor technology adopts the structure of one-piece molding or winding through convex buttons, such as the technologies disclosed in patents CN101553891B, US2016 / 0141087A1, CN110098042A, and CN104332275A. In the case of using a flat coil, there will still be crossing of the inductance and outgoing wires, which will affect reliability when used at high frequencies after pressure molding; another defect of this technology is that when the size becomes very flat, in order to obtain a higher Saturation current capability, the coil winding is very close to the outer wall of the component, a large amount of magnetic flux of the magnetic component will pass through the surrounding space, causing interference to the surrounding devices
[0004] In order to obtain a larger winding space in the existing RF wire-wound chip inductor or common mode inductor technology, U-shaped magnetic cores are usually used for winding and the terminals are directly formed on the ends of the U-shaped magnetic cores, such as patents CN201310351910.X, CN201410580127 .5, CN200910039475.0 and other disclosed technologies, the manufacturing process is simple, but there is a demand for more accurate control of the inductance, as well as greater current and better Q value

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Patch magnetic element and manufacturing method thereof
  • Patch magnetic element and manufacturing method thereof
  • Patch magnetic element and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The structural perspective view of this embodiment is as figure 1 As shown, a patch magnetic component has a length L≥width W≥height H, including: a coil winding 12 whose winding axis 120 is parallel to the width W direction of the magnetic component, and the winding has two ends connected to two terminals 125; the body 11 is included around the coil winding 12; the terminals 125 are distributed along the length L direction on the left and right sides of the winding axis 120, and the terminal electrodes 125 are located on the bottom and side surfaces in this embodiment;

[0065] The shape of the coil winding 12 is elliptical, and the coil winding 12 has a curved warping part 121 in the length L direction of the left and right sides of the winding axis 120; figure 2 As shown, the coil winding 12 satisfies that at least part of it falls in the terminal area 125 in the bottom LW plane projection. It can be seen from the figure that the arc warping part 121 basically falls...

Embodiment 2

[0067] The structural perspective view of this embodiment is as image 3 As shown, a patch magnetic element, its length L≥width W≥height H, includes: coil winding 12, its winding axis 120 is parallel to the width W direction of the magnetic element, and the winding has two ends connected to two copper The terminals 122 are connected by spot welding or thermocompression welding; the body 11 is included around the coil winding 12; the terminals 122 are distributed along the length L direction on the left and right sides of the winding axis 120, and the terminal electrodes in this embodiment 122 position is on the bottom surface;

[0068] The shape of the coil winding 12 is a racetrack shape, and the coil winding 12 has a curved warping part 121 in the length L direction of the left and right sides of the winding axis 120; The magnetic element of this embodiment also includes a central column 13, the material of which is a sendust metal powder core; the coil winding is wound aro...

Embodiment 3

[0070] The appearance of this embodiment is as follows Figure 4 As shown, a chip inductance element is electroplated with terminal electrodes 125 on five sides on the body 11 . Its length L≥width W≥height H, such as Figure 5 As shown, it includes: a coil winding 12, the winding axis 120 of which is parallel to the width W direction of the magnetic element, and the winding has two ends connected to terminal electrodes 125; the body 11 is included around the coil winding 12; the The terminals 125 are distributed on the left and right sides of the winding axis 120 along the length L direction. In this embodiment, the terminal electrodes 125 are located on the upper and lower bottom surfaces and side surfaces.

[0071] The shape of the coil winding 12 is a racetrack shape, and the coil winding 12 has a curved warping part 121 in the length L direction of the left and right sides of the winding axis 120; The magnetic element of this embodiment also includes a central column 13,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a patch magnetic element and a manufacturing method thereof. The length L of the patch magnetic element is greater than or equal to the width W and is greater than or equal to the height H, the patch magnetic element includes a coil winding having a winding axis parallel to the width W direction of the patch magnetic element and having at least two end portions; at least two terminals connected to the at least two end portions of the coil winding and providing an electrical contact for connecting the patch magnetic element to an electrical circuit; and a body including a mixture of a magnetic or non-magnetic materials formed around at least a portion of the coil winding, and exposing at least a portion of the terminal to assemble the patch magnetic element to the circuit. According to the present invention, the stray capacitance of the winding is very small, and the influence of stray magnetic flux on peripheral elements is reduced; the reliability is high; meanwhile, the saturation current of a power inductor is larger than that in the prior art, and the direct-current resistance is smaller than that in the prior art.

Description

technical field [0001] The invention relates to the field of electronic components, in particular to a high-current thin patch magnetic component suitable for high-frequency applications and a manufacturing method thereof. Background technique [0002] There are mainly two winding schemes for the existing thin SMD magnetic components, one is the traditional one-piece inductor, and the other is to use the I-shaped magnetic core to wind the wire, and then become a SMD component after the end of the magnetic core is polarized. ; The former is often used as a power inductor, while the latter is used as a radio frequency inductor or a common mode inductor. Under the influence of the high frequency trend, the former often leads to poor high frequency characteristics or even poor high frequency characteristics due to the crossover of winding wires and forming under pressure; RF inductors need to be able to control the inductance more accurately and obtain better Q value. [0003]...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01F27/28H01F27/30H01F27/29H01F27/36H01F27/02H01F41/063H01F41/066H01F41/00H01F17/04
CPCH01F27/2823H01F27/288H01F27/306H01F27/29H01F27/022H01F41/063H01F41/066H01F41/005H01F17/045H01F2017/046
Inventor 黄智褚江端悦涛
Owner 墨尚电子科技(江苏)有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com