CN114496537A - Manufacturing method of thick electrode component - Google Patents

Manufacturing method of thick electrode component Download PDF

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Publication number
CN114496537A
CN114496537A CN202111584124.5A CN202111584124A CN114496537A CN 114496537 A CN114496537 A CN 114496537A CN 202111584124 A CN202111584124 A CN 202111584124A CN 114496537 A CN114496537 A CN 114496537A
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China
Prior art keywords
electrode
base material
substrate
laminating
manufacturing
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CN202111584124.5A
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Chinese (zh)
Inventor
朱秀美
李强
蔡锦伦
李肇龙
庞孔鑫
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Guangdong Fenghua Advanced Tech Holding Co Ltd
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Guangdong Fenghua Advanced Tech Holding Co Ltd
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Priority to CN202111584124.5A priority Critical patent/CN114496537A/en
Publication of CN114496537A publication Critical patent/CN114496537A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

The invention provides a manufacturing method of a thick electrode component, which comprises the following steps: (1) printing the magnetic non-conductive slurry on the substrate A by a screen printing process to obtain a preset groove; printing the conductive paste on the base material B to obtain an electrode; the preset groove and the electrode are provided with mutually coupled matching surfaces; (2) laminating one surface of the base material A provided with the preset groove on one surface of the base material B printed with the electrode, laminating the base material A and the base material B under the action of temperature and pressure, and engaging the preset groove with the electrode in a concave-convex manner; (3) and (3) laminating and laminating the structures obtained in the step (2) to form a thick electrode component. According to the invention, the electrode and the preset groove are respectively printed by using the conductive slurry and the magnetic non-conductive slurry on different base materials, and the different base materials are adopted for separate printing, so that mutual influence is avoided, and the high-thickness electrode, the large-depth groove and the high-quality lamination laminating effect of the electrode and the preset groove can be effectively ensured.

Description

Manufacturing method of thick electrode component
Technical Field
The invention relates to the technical field of electronic components, in particular to a manufacturing method of a thick electrode component.
Background
An inductor is an electronic component that operates using the principle of electromagnetic conversion, and is widely distributed in electronic circuits of various electronic products. The inductor can be divided into a winding type inductor, a laminated type inductor and a thin film patch type inductor according to different processes, wherein the patch inductor has the characteristics of high saturation, high reliability, high precision and miniaturization, so that the inductor has unique advantages in the fields of consumer electronics, digital products, mobile communication, computers, set top boxes, automotive electronics and the like. The electrode mainly plays a role in conducting an inductance coil and an electronic component in the inductor.
At present, the manufacturing methods of the laminated inductor mainly include a dry method and a wet method. The dry method is to make ferrite or ceramic material into sheets, print electrodes on the sheets respectively, and press the sheets printed with the electrodes together; the wet process is to cast a layer of ferrite or ceramic, print electrodes on the ferrite or ceramic, then cast a layer of ferrite or ceramic on the ferrite or ceramic, and so on.
In the prior art, the step of fabricating a thick electrode includes: the conductive paste (or magnetic non-conductive paste) is printed on a base material in the first step, then the magnetic non-conductive paste (or conductive paste) is printed in the second step, and then the conductive paste is circularly laminated and laminated to obtain the conductive paste. This process results in a laminate stack that is susceptible to electrode deformation and hollowing when pressure is applied due to the thickness of the electrode when only the conductive electrode is printed without the magnetic powder non-conductively filling the trench. When the filled trench is not separated from the conductive electrode, problems of diffusion, incomplete filling, poor printing quality and the like can occur when the magnetic non-conductive paste (or conductive paste) is printed in the second step.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a manufacturing method of a thick electrode component.
In order to achieve the purpose, the invention adopts the technical scheme that:
a manufacturing method of a thick electrode component comprises the following steps:
(1) printing the magnetic non-conductive slurry on the substrate A through a screen printing process to obtain the substrate A provided with the preset groove; printing the conductive paste on the base material B to obtain the base material B printed with the electrode; the preset groove and the electrode are provided with mutually coupled matching surfaces;
(2) laminating one surface of the base material A provided with the preset groove on one surface of the base material B printed with the electrode, laminating the base material A and the base material B under the action of temperature and pressure, and engaging the preset groove with the electrode in a concave-convex manner;
(3) and (3) repeating the step (1) and the step (2), and laminating the structures obtained in the step (2) to form the thick electrode component.
The manufacturing method of the invention prints the electrode and the preset groove by using the conductive slurry and the magnetic non-conductive slurry on different substrates, and because different substrates are separately printed, the electrode and the preset groove can not be influenced mutually, and the high-thickness electrode, the large-depth groove and the high quality of the electrode and the preset groove can be effectively ensured.
Further, the magnetic non-conductive slurry comprises the following components in percentage by weight: 65-72% of magnetic ferrite powder, 12-17% of carrier resin, 8-11% of terpineol, 0.5-1% of dispersing agent and 1-3% of thickening agent.
The magnetic non-conductive slurry plays a role in the invention, firstly, a product framework is formed, the thickness difference is reduced, and the deformation under high pressure is prevented. The inventor makes the printing effect and the laminating effect better through the formula of the magnetic non-conductive plasma material, and can realize the high-quality thick filling effect.
Further, the carrier resin comprises PVB resin and ethyl cellulose, wherein the PVB accounts for 2-5% of the total weight of the magnetic non-conductive slurry, and the ethyl cellulose accounts for 10-12% of the total weight of the magnetic non-conductive slurry. The dispersant is a compound multifunctional oily surfactant, such as: polycarboxylic acid type copolymers, modified phosphoric acid esters, natural fatty acid mixtures, polymers, and the like; the thickener is at least one of carboxymethyl cellulose or methyl cellulose.
Further, the base material A and the base material B are ferrite base materials.
Further, in the step (2), the temperature is 60-80 ℃, and the pressure is 3000-5000 MPa. The inventors have found that at the above temperature and pressure, the above materials such as PVB resin and ethyl cellulose can reach an optimum softening temperature point, and good plasticity and adhesion can be achieved, and a high-quality thick electrode and an excellent lamination effect can be achieved. If the temperature is too low and the pressure is too low, the magnetic non-conductive slurry cannot reach the softening point, so that the magnetic non-conductive slurry cannot be laminated; if the temperature and pressure are too high, the problem of deformation and bending of the conductor is likely to occur.
Further, in the step (2), the substrate A and the substrate B are laminated and laminated under the conditions that the temperature is 70 ℃ and the pressure is 4000MPa, so that the preset grooves are engaged with the electrode concave-convex.
Further, the thickness of the electrode printed on the substrate B is 30 to 80 μm.
Further, the thickness of the electrode printed on the substrate B is 40 to 60 μm.
Further, the thickness of the electrode printed on the substrate B was 50 μm.
In a second aspect, the invention also provides a thick electrode component prepared by the preparation method.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the electrode and the preset groove are respectively printed by using the conductive slurry and the magnetic non-conductive slurry on different base materials, and the different base materials are adopted for separate printing, so that mutual influence is avoided, and the high-thickness electrode, the large-depth groove and the high-quality lamination laminating effect of the electrode and the preset groove can be effectively ensured. The problems that in the lamination and lamination process in the prior art, due to the thick electrode, the electrode is easy to deform and hollows when pressure is applied, or when the filling groove is not separated from the conductive electrode, the problems of diffusion, incomplete filling, poor printing quality and the like can occur in printing. The invention also provides a magnetic non-conductive paste, which further ensures the thick filling printing effect.
Drawings
FIG. 1 is a schematic diagram of a process for manufacturing a thick electrode device in embodiments 1-3 of the present invention;
FIG. 2 is a schematic flow chart of step (1) according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of step (2) according to the embodiment of the present invention;
FIG. 4 is a schematic flow chart of step (3) according to the present invention;
FIG. 5 is a schematic diagram of a process for preparing a thick electrode device of comparative example 1;
FIG. 6 is a schematic diagram showing the printing effect of comparative example 1;
fig. 7 is an effect diagram of a thick electrode device manufactured in embodiment 1 of the present invention;
fig. 8 is a diagram showing effects of a thick electrode device manufactured in comparative example 1 of the present invention.
Detailed Description
To better illustrate the objects, technical solutions and advantages of the present invention, the present invention will be further described with reference to specific examples.
Example 1
The invention relates to a manufacturing method of a thick electrode component, which comprises the following steps:
(1) 65-72% of magnetic ferrite powder, 2-5% of PVB resin, 10-12% of ethyl cellulose, 8-11% of terpineol, 0.5-1% of dispersant and 1-3% of thickener are mixed and rolled to prepare the magnetic non-conductive slurry. Printing the magnetic non-conductive slurry on the substrate A through a screen printing process to obtain the substrate A provided with the preset groove; printing the conductive paste on the base material B to obtain the base material B printed with the electrode; the preset groove and the electrode are provided with mutually coupled matching surfaces; the base material A and the base material B are ferrite base materials;
(2) laminating one surface of the base material A provided with the preset groove on one surface of the base material B printed with the electrode, laminating the base material A and the base material B under the pressure action of 60 ℃ and 30T, and engaging the preset groove with the electrode in a concave-convex manner;
(3) and (3) repeating the step (1) and the step (2), and laminating the structures obtained in the step (2) to form the thick electrode component.
The data for the thick electrode component prepared in example 1 are:
item Conductor width (mum) Thickness of electrical conductor (mum)
Design value 200 50
Effect value 190-210 48-50
As can be seen from fig. 7, the conductor of the thick electrode component prepared by the method of embodiment 1 is straight and square, and the thick filling printing effect is achieved.
Example 2
(1) 65-72% of magnetic ferrite powder, 2-5% of PVB resin, 10-12% of ethyl cellulose, 8-11% of terpineol, 0.5-1% of dispersant and 1-3% of thickener are mixed and rolled to prepare the magnetic non-conductive slurry. Printing the magnetic non-conductive slurry on the substrate A through a screen printing process to obtain the substrate A provided with the preset groove; printing the conductive paste on the base material B to obtain the base material B printed with the electrode; the preset groove and the electrode are provided with mutually coupled matching surfaces; the base material A and the base material B are ferrite base materials;
(2) laminating one surface of the base material A provided with the preset groove on one surface of the base material B printed with the electrode, laminating the base material A and the base material B under the pressure action of 70 ℃ and 40T, and engaging the preset groove with the electrode in a concave-convex manner;
(3) and (3) repeating the step (1) and the step (2), and laminating the structures obtained in the step (2) to form the thick electrode component.
The electrical performance data of the thick electrode device prepared in example 2 are:
item Electric conductor width (mum) Thickness of electrical conductor (mum)
Design value 200 50
Effect value 192-212 47-49
Example 3
(1) Mixing and rolling 65-72% of magnetic ferrite powder, 2-5% of PVB resin, 10-12% of ethyl cellulose, 8-11% of terpilenol, 0.5-1% of dispersing agent and 1-3% of thickening agent to prepare the magnetic non-conductive slurry. Printing the magnetic non-conductive slurry on the substrate A through a screen printing process to obtain the substrate A provided with the preset groove; printing the conductive paste on the base material B to obtain the base material B printed with the electrode; the preset groove and the electrode are provided with mutually coupled matching surfaces; the base material A and the base material B are ferrite base materials;
(2) laminating one surface of the base material A provided with the preset groove on one surface of the base material B printed with the electrode, laminating the base material A and the base material B at 80 ℃ under the pressure of 50T, and engaging the preset groove with the electrode in a concave-convex manner;
(3) and (3) repeating the step (1) and the step (2), and laminating the structures obtained in the step (2) to form the thick electrode component.
The electrical performance data for the thick electrode device prepared in example 3 is:
item Conductor width (mum) Thickness of electrical conductor (mum)
Design value 200 50
Effect value 201-232 42-45
Comparative example 1
The invention discloses a comparative example of a preparation method of a thick electrode component, which comprises the following steps:
(1) 65-72% of magnetic ferrite powder, 2-5% of PVB resin, 10-12% of ethyl cellulose, 8-11% of terpineol, 0.5-1% of dispersant and 1-3% of thickener are mixed and rolled to prepare the magnetic non-conductive slurry. Printing the magnetic non-conductive slurry on the substrate A through a screen printing process to obtain the substrate A provided with the preset groove; printing conductive paste on the substrate A;
(2) and (3) laminating and laminating the structures obtained in the step (1) to form a thick electrode component.
The data for the thick electrode device prepared in comparative example 1 are:
item Conductor width (mum) Thickness of electrical conductor (mum)
Design value 200 50
Effect value 211-232 42-45
As can be seen from fig. 8, the thick electrode device manufactured by the method of comparative example 1 had problems of deformation, bending, and arcing of the conductor.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. A method for manufacturing a thick electrode component is characterized by comprising the following steps:
(1) printing the magnetic non-conductive slurry on the substrate A through a screen printing process to obtain the substrate A provided with the preset groove; printing the conductive paste on the base material B to obtain the base material B printed with the electrode; the preset groove and the electrode are provided with mutually coupled matching surfaces;
(2) laminating one surface of the base material A provided with the preset groove on one surface of the base material B printed with the electrode, laminating the base material A and the base material B under the action of temperature and pressure, and engaging the preset groove with the electrode in a concave-convex manner;
(3) and (3) repeating the step (1) and the step (2), and laminating the structures obtained in the step (2) to form the thick electrode component.
2. A method for fabricating a thick electrode device as claimed in claim 1, wherein the magnetic non-conductive plasma material comprises the following components in percentage by weight: 65-72% of magnetic ferrite powder, 12-17% of carrier resin, 8-11% of terpineol, 0.5-1% of dispersing agent and 1-3% of thickening agent.
3. The method as claimed in claim 2, wherein the carrier resin includes PVB resin and ethyl cellulose, wherein the PVB resin accounts for 2-5% of the total weight of the magnetic non-conductive paste, and the ethyl cellulose accounts for 10-12% of the total weight of the magnetic non-conductive paste.
4. A method for manufacturing a thick electrode component as claimed in claim 1, wherein the substrate a and the substrate B are ferrite substrates.
5. A method for manufacturing a thick electrode component as claimed in claim 1, wherein in the step (2), the temperature is 60-80 ℃ and the unit pressure is 30-50T/cm2Laminating the base material A and the base material B under the condition (2) to make the pre-arranged grooves engaged with the electrode concave-convex.
6. The method for manufacturing a thick electrode component as claimed in claim 5, wherein in the step (2), the substrate A and the substrate B are laminated and laminated under the conditions of a temperature of 70 ℃ and a pressure of 4000MPa, and the pre-arranged grooves are engaged with the electrodes in a concave-convex manner.
7. A method for manufacturing a thick electrode component as claimed in claim 1, wherein the thickness of the electrode printed on the substrate B is 30 to 80 μm.
8. A method for manufacturing a thick electrode component as claimed in claim 7, wherein the thickness of the electrode printed on the substrate B is 40-60 μm.
9. A method for manufacturing a thick electrode component as claimed in claim 7 or 8, wherein the thickness of the electrode printed on the substrate B is 50 μm.
10. A thick electrode device manufactured by the method as claimed in any one of claims 1 to 9.
CN202111584124.5A 2021-12-21 2021-12-21 Manufacturing method of thick electrode component Pending CN114496537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111584124.5A CN114496537A (en) 2021-12-21 2021-12-21 Manufacturing method of thick electrode component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111584124.5A CN114496537A (en) 2021-12-21 2021-12-21 Manufacturing method of thick electrode component

Publications (1)

Publication Number Publication Date
CN114496537A true CN114496537A (en) 2022-05-13

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ID=81493375

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Application Number Title Priority Date Filing Date
CN202111584124.5A Pending CN114496537A (en) 2021-12-21 2021-12-21 Manufacturing method of thick electrode component

Country Status (1)

Country Link
CN (1) CN114496537A (en)

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