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Cascading inductor based on metal magnetic slurry and preparation method thereof

A metal magnetic, stacked inductance technology, used in the manufacture of inductors/transformers/magnets, inductors, magnetic materials, etc., can solve the problems of high DC resistance, low rated current, etc., to improve saturation magnetization, reduce DC resistance, improve Effect of rated current

Active Publication Date: 2015-03-25
SHENZHEN GUDIAN ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In addition, there are inductors with other structures, but they all have the defects of low rated current or / and high DC resistance. Therefore, compared with the existing inductors, it is necessary to design an inductor with high rated current and low DC resistance at the same time. very important significance of the inductor specific

Method used

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  • Cascading inductor based on metal magnetic slurry and preparation method thereof
  • Cascading inductor based on metal magnetic slurry and preparation method thereof
  • Cascading inductor based on metal magnetic slurry and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A laminated inductor based on metal magnetic paste, see figure 1 , specifically including the first substrate 11, the intermediate layer 12 and the second substrate 13 arranged from bottom to top, the intermediate layer 12 includes three single layers arranged from bottom to top, and the number of single layers can also be selected according to actual needs.

[0043] The single layer of the first layer includes a dielectric layer 121, a filling layer 122 and a coil electrode 123, and the dielectric layer 121 is provided with a through hole A along the up and down direction (the through hole A is preferably located in the dielectric layer 121 and the area of ​​the through hole A on the upper surface of the dielectric layer 121 is 0.1-0.8 times the area of ​​the upper surface of the dielectric layer 121); the filling layer 122 is arranged on the through hole Place A, the thickness of the filling layer 122 along the vertical direction is the same as the thickness of the di...

Embodiment 2

[0062] A laminated inductor based on metal magnetic paste, which differs from Embodiment 1 only in that: (1) the formulation of the filling layer 122 is different; (2) the preparation method is different.

[0063] The filling layer 122 in this embodiment includes the following substances in parts by weight: 7 parts of inorganic powder composed of metal magnetic powder, 1 part of lead-free glass powder, 1 part of organic vehicle and additives 1 serving. The lead-free glass powder includes the following materials in parts by weight: 2 parts of lithium oxide, 2 parts of potassium oxide, 15 parts of diboron trioxide, 15 parts of bismuth oxide and 45 parts of silicon dioxide. The organic vehicle includes the following materials in parts by weight: 15 parts of butyl carbitol, 5 parts of terpineol and 3 parts of ethyl cellulose. The auxiliary agent includes the following substances in parts by weight: 1 part of triethanolamine, 1 part of triethylene glycol diisocaprylate, 2 parts of...

Embodiment 3

[0072] A laminated inductor based on metal magnetic paste, which differs from Embodiment 1 only in that: (1) the formulation of the filling layer 122 is different; (2) the preparation method is different.

[0073] The filling layer 122 in this embodiment includes the following substances in parts by weight: 7 parts of inorganic powder composed of metal magnetic powder, 1 part of lead-free glass powder, 1.5 parts of organic vehicle and additives 1.5 servings. The lead-free glass powder includes the following materials in parts by weight: 3 parts of lithium oxide, 3 parts of potassium oxide, 20 parts of diboron trioxide, 20 parts of bismuth oxide and 40 parts of silicon dioxide. The organic vehicle includes the following materials in parts by weight: 10 parts of butyl carbitol, 15 parts of terpineol and 2 parts of binder. The auxiliary agent includes the following substances in parts by weight: 2 parts of triethanolamine, 2 parts of triethylene glycol diisocaprylate, 1 part of ...

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Abstract

The invention firstly aims to provide a cascading inductor based on metal magnetic slurry. The cascading inductor comprises a first base body, an interlayer and a second base body, wherein the first base body, the interlayer and the second base body are arranged from bottom to top. The interlayer comprises at least two single-layers arranged from bottom to top. Each single-layer comprises a dielectric layer, a packing layer and a coil electrode, wherein the dielectric layer is provided with a through hole in the vertical direction; the packing layer is arranged at the through hole, and the upper surface of the packing layer is not lower than the upper surface of the dielectric layer; the coil electrode is arranged on the upper surface of the dielectric layer and located around the packing layer; the packing layer comprises inorganic powder bodies composed of metal magnetic powder, lead-free glass powder, organic carriers and auxiliaries. The cascading inductor based on the metal magnetic slurry is simple in overall structure; since the packing layers are made of metal alloy materials with high saturation flux density, the saturation magnetization intensity of the whole cascading inductor is improved, and then the rated current is increased. The invention secondly aims to provide a preparation method of the cascading inductor based on the metal magnetic slurry. By means of the preparation method, the process steps are simple, the cost is low, and the cascading inductor is quite suitable for large-scale batch production.

Description

technical field [0001] The invention relates to the field of laminated chip components, in particular to a laminated inductor based on metal magnetic paste and a preparation method thereof. Background technique [0002] With the development of electronic complete machines in the direction of digitization, high frequency, multi-function, thin, light, small and portable, electronic components are also developing in the direction of chip, multi-layer and miniaturization. In recent years, ordinary multilayer ferrite inductors have been widely used in mobile phones, audio / video, computers and other fields due to their high reliability and shielding advantages. However, their rated current and DC resistance can no longer meet the needs of existing complete machines. Although consumer electronic products are becoming lighter, thinner, shorter, and smaller, the output voltage of the power supply has not dropped significantly. The internal electronic components must also meet higher ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F17/00H01F37/00H01F27/255H01F1/147H01F41/00B22F1/00
Inventor 梁晓斌阳亚辉潘锴徐麟袁红兵王立成彭勇袁云辉
Owner SHENZHEN GUDIAN ELECTRONICS
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