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Inner electrode of laminated inductor, preparation method of inner electrode and laminated inductor

A technology of laminated inductors and inner electrodes, which is applied to transformer/inductor components, inductors, printed inductors, etc. The effect of increasing the magnetic flux area, increasing the cross section and increasing the Q value

Active Publication Date: 2021-09-07
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the former research and development cycle is too long, while the latter is feasible, but it will also be limited by the size, thickness and process limitations of the inductor itself.

Method used

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  • Inner electrode of laminated inductor, preparation method of inner electrode and laminated inductor
  • Inner electrode of laminated inductor, preparation method of inner electrode and laminated inductor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] This embodiment provides a laminated inductor, the laminated inductor such as figure 1 As shown, it includes a base body, an lead-in external electrode, a lead-out external electrode and an internal electrode. The internal electrode is embedded in the base body, and the lead-in external electrode and the lead-out external electrode are respectively arranged at both ends of the base body and connected to the two ends of the internal electrode.

[0063] Internal electrodes such as figure 2 As shown, the first metal layer, the first through hole layer, the second metal layer, the second through hole layer and the third metal layer are sequentially stacked, and the structure of the first metal layer, the second metal layer and the third metal layer The same, both are linear wall-like structures (that is, the concave and convex parts in the continuous concave-convex structure are both rectangular). The number of through-hole columns included in the first through-hole layer...

Embodiment 2

[0066] The present invention provides a method for preparing the laminated inductor described in Embodiment 1, and the preparation method specifically includes the following steps:

[0067] (1) Ingredients: Mix ceramic powder with plasticizer (isopropanolamine), binder (polyvinyl alcohol), dispersant (hexanediol) and organic solvent (alcohol ether) in a certain proportion to form a fluid Extended slurry, wherein, 6 parts of binder, 50 parts of organic solvent, 3 parts of plasticizer, 2 parts of dispersant, 40 parts of ceramic powder;

[0068] (2) Casting: the casting slurry is evenly coated on a PET film with a thickness of 50 μm, the peeling force of the PET film is 10 g, the coating thickness is 50 μm, and a raw tape is obtained after drying;

[0069] (3) Slicing and punching: cut the raw tape into 6 inches, and punch holes in the raw tape according to the position of the through-hole post;

[0070] (4) Making internal electrodes: Print the photosensitive silver paste on th...

Embodiment 3

[0080] The present invention provides a method for preparing the laminated inductor described in Embodiment 1, and the preparation method specifically includes the following steps:

[0081] (1) Ingredients: Mix ceramic powder with plasticizer (1,3-propylene glycol), binder (polyvinyl alcohol), dispersant (acrylamide) and organic solvent (alcohol ether) in a certain proportion to form a fluid Extended slurry, wherein, 8 parts of binder, 50 parts of organic solvent, 4 parts of plasticizer, 2 parts of dispersant, 45 parts of ceramic powder;

[0082] (2) Casting: the casting slurry is evenly coated on a PET film with a thickness of 38 μm, the peeling force of the PET film is 5 g, the coating thickness is 10 μm, and the raw tape is obtained after drying;

[0083] (3) Slicing and punching: cut the raw tape into 6 inches, and punch holes in the raw tape according to the position of the through-hole post;

[0084] (4) Making internal electrodes: Print the photosensitive silver paste ...

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Abstract

The invention provides an inner electrode of a laminated inductor, a preparation method of the inner electrode and the laminated inductor. The inner electrode comprises at least one metal layer and at least one through hole layer, and the metal layers and the through hole layers are alternately laminated; the metal layer is of a linear continuous concave-convex structure, and the through hole layer comprises at least one through hole column. According to the inner electrode of the laminated inductor, the Q value of the inductor is improved by changing the structural design of the inductor.

Description

technical field [0001] The invention belongs to the technical field of laminated inductors, and relates to an internal electrode of a laminated inductor, a preparation method thereof and a laminated inductor. Background technique [0002] With the increasing progress of consumer products in terms of high speed, high storage density, and thinness, as well as the continuous upgrading of mobile communication technology centered on mobile phones and wired and wireless digital communication networks. In the past 20 years, the direction of miniaturization and portability has been rapidly developed. For inductor products, it is also developing in the direction of miniaturization, chip type and high frequency. [0003] Laminated inductors are also non-wound inductors. Compared with wound inductors, the advantages of laminated inductors are: (1) small size; (2) closed circuit, no interactive interference, suitable for high-density installation ; (3) Non-directional, standardized aut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F17/00H01F17/03H01F27/28H01F27/29
CPCH01F17/0013H01F17/03H01F27/2804H01F27/29H01F2017/002H01F2027/2809Y02P10/25
Inventor 朱权於扬栋刘赣
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD