CN111477436A - Novel magnetic shielding unsaturated inductor and production method thereof - Google Patents
Novel magnetic shielding unsaturated inductor and production method thereof Download PDFInfo
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- CN111477436A CN111477436A CN202010194461.2A CN202010194461A CN111477436A CN 111477436 A CN111477436 A CN 111477436A CN 202010194461 A CN202010194461 A CN 202010194461A CN 111477436 A CN111477436 A CN 111477436A
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 69
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000003292 glue Substances 0.000 claims abstract description 21
- 239000000853 adhesive Substances 0.000 claims abstract description 16
- 230000001070 adhesive effect Effects 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims 1
- 229920006395 saturated elastomer Polymers 0.000 abstract description 3
- 239000011162 core material Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
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- 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
- H01F27/2823—Wires
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- 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
- H01F27/24—Magnetic cores
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- 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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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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
- H01F41/02—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 for manufacturing cores, coils, or magnets
- H01F41/04—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 for manufacturing cores, coils, or magnets for manufacturing coils
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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
- H01F41/02—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 for manufacturing cores, coils, or magnets
- H01F41/04—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 for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
- H01F41/061—Winding flat conductive wires or sheets
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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
- H01F41/02—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 for manufacturing cores, coils, or magnets
- H01F41/04—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 for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/10—Connecting leads to windings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
The invention discloses a novel magnetic shielding unsaturated inductor and a production method thereof, and the novel magnetic shielding unsaturated inductor comprises a bar-shaped magnetic core, a coil, pins, a magnetic cover and adhesive glue, wherein the adhesive glue is coated on the bar-shaped magnetic core, the coil is wound on the bar-shaped magnetic core, the pins are arranged at positions, close to two ends of the bar-shaped magnetic core, the pins are welded with two ends of the coil, a first U-shaped groove and a second U-shaped groove which are respectively matched and fixed with the outer side of the coil and two ends of the bar-shaped magnetic core are arranged in the magnetic cover, and the adhesive glue is coated in the first U-shaped groove and the second U-shaped groove. The rated current of the novel magnetic shielding unsaturated inductor provided by the invention can bear 3A to 100A, the inductance value between the saturated current of the inductor and the rated current value from zero ampere can only fall to 40 percent of the nominal inductance value, and the inductance value cannot completely fall to zero.
Description
Technical Field
The invention relates to the technical field of electronic devices, in particular to a novel magnetic shielding unsaturated inductor and a production method thereof.
Background
An Inductor (Inductor) is a component that can convert electrical energy into magnetic energy for storage. The inductor is similar in structure to a transformer, but has only one winding. The inductor has an inductance that only impedes the change in current. If the inductor is in a state where no current is passing, it will try to block the current from flowing through it when the circuit is on; if the inductor is in a current passing state, the inductor will try to keep the current unchanged when the circuit is opened. Inductors are also known as chokes, reactors, dynamic reactors.
The inductor may be made by winding a core of electrically conductive material, typically copper wire, and the core may be eliminated or replaced by a ferromagnetic material. A core material with a higher permeability than air may confine the magnetic field more tightly around the inductive element, thereby increasing the inductance. There are many types of inductors, most of which are made with an outer enamel coil (enameled wire) wrapped around a ferrite bobbin, while some protective inductors place the coil entirely within the ferrite. The core of some inductive elements can be tuned. The size of the inductance can thereby be varied. The small inductor can be directly etched on the PCB board by a method of laying a spiral track. The small value inductor can also be fabricated in an integrated circuit using the same process used to fabricate the transistor. In these applications, aluminum interconnects are often used as the conductive material. In either case, most practical constraints are based on the use of a circuit called a "rotator" that exhibits the same characteristics as an inductive element with a capacitive and active element. Inductive elements for isolating high frequencies are often constructed with a wire that is threaded through a magnetic column or bead.
The inductance of the product saturation current in the current market is continuously reduced to zero when the current is continuously increased, and the inductance becomes capacitive (becomes a capacitor).
The chip-type current resistance of some products in the market at present is small, the chip-type current resistance is not suitable for being used in a large-current environment, the inductance value continuously decreases in the process of continuously increasing the current after magnetic field saturation until the inductance value is zero, and the chip-type current resistance cannot be used in special occasions.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
The invention aims to provide a novel magnetic shielding unsaturated inductor and a production method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the novel magnetic shielding unsaturated inductor comprises a bar-shaped magnetic core, a coil, pins, a magnetic cover and adhesive glue, wherein the adhesive glue is coated on the bar-shaped magnetic core, the coil is wound on the bar-shaped magnetic core, the pins are arranged at positions, close to two ends of the bar-shaped magnetic core, the pins are welded with the two ends of the coil together, a first U-shaped groove and a second U-shaped groove which are matched and fixed with the outer side of the coil and two ends of the bar-shaped magnetic core respectively are formed in the magnetic cover, and the adhesive glue is coated in the first U-shaped groove and the second U-shaped groove.
A production method of a novel magnetic shielding unsaturated inductor comprises the following specific steps:
(1) adopting a flat wire winding, and selecting the width and the thickness of a copper wire according to a required current value;
(2) dispensing: coating adhesive glue on the bar-shaped magnetic core, inserting the bar-shaped magnetic core into the coil after the adhesive glue is coated, and keeping the same exposed distance of the two ends of the bar-shaped magnetic core;
(3) baking: placing the product with the glue in an oven for baking, and solidifying the glue to bond the coil and the rod-shaped magnetic core;
(4) assembling pins: after the coil is placed in the jig, pins are placed at two ends of the coil, and then the pins are welded on two end connectors of the coil;
(5) dispensing with a magnetic cover: placing the magnetic cover into a jig, dispensing in a first U-shaped groove and a second U-shaped groove in the magnetic cover, placing the coil, and locking the jig to enable the jig to press the two bonding pads and the coil;
(6) baking: and (5) putting the product into an oven for baking to solidify the glue.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention adopts the flat wire winding, and sequentially carries out the processes of dispensing, baking, pin assembling, magnetic shield dispensing and baking, the rated current can bear 3A to 100A, the inductance value of the inductor only falls to 40 percent of the nominal inductance value from zero ampere to the rated current value, the inductance value cannot completely fall to zero, the inductance value of the invention cannot be saturated in the rated current, and the invention has the characteristics of stable inductance value, larger current resistance, high current-carrying capacity and the like, and the thick wire and the thin wire can be automatically wound, thereby improving the production efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of a separated structure of a novel magnetically shielded unsaturated inductor according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of the overall structure of a novel magnetically shielded unsaturated inductor according to an embodiment of the present invention.
FIG. 3 is a diagram showing inductance versus current of a commercial inductor.
FIG. 4 is a diagram showing the relationship between the inductance and the current of the inductor according to the present invention.
Reference numerals:
1. a rod-shaped magnetic core; 2. a coil; 3. a pin; 4. a magnetic shield; 5. smelting a tool; 6. a first U-shaped groove; 7. A second U-shaped groove; 8. and (5) adhesive glue.
Detailed Description
The invention is further described with reference to the following drawings and detailed description:
referring to fig. 1-4, a novel magnetically shielded unsaturated inductor and a method for manufacturing the same according to an embodiment of the present invention includes a bar-shaped magnetic core 1, a coil 2, pins 3, a magnetic cover 4, and an adhesive 8, where the adhesive 8 is coated on the bar-shaped magnetic core 1, the coil 2 is wound around the bar-shaped magnetic core 1, the pins 3 are disposed at two ends of the bar-shaped magnetic core 1, the pins 3 are welded to two ends of the coil 2, a first U-shaped groove 6 and a second U-shaped groove 7 are disposed in the magnetic cover 4, and the first U-shaped groove 6 and the second U-shaped groove 7 are respectively fixed to the outside of the coil 2 and the two ends of the bar-shaped magnetic core 1, and the adhesive 8 is coated in the first U-shaped groove 6 and the second U-shaped groove 7.
A production method of a novel magnetic shielding unsaturated inductor comprises the following specific steps:
1. the coil 2 adopts a flat wire winding, and the width and the thickness of a copper wire are selected according to the required current value;
2. dispensing: coating adhesive 8 on the bar-shaped magnetic core 1, inserting the bar-shaped magnetic core 8 into the coil 2 after the adhesive is coated, and keeping the same exposed distance of the two ends of the bar-shaped magnetic core 1;
3. baking: placing the product with the glue in an oven for baking, and solidifying the glue to bond the coil 2 and the rod-shaped magnetic core 1;
4. assembling the pin 3: after the coil 2 is placed in the jig 5, pins 3 are placed at two ends of the coil 2, and then the pins 3 are welded on two end connectors of the coil 2;
5. dispensing of the magnetic shield 4: placing the magnetic cover 4 into a jig 5, dispensing in a first U-shaped groove 6 and a second U-shaped groove 7 in the magnetic cover 5, placing the coil 2, and locking the jig 5 to enable the jig 5 to press two bonding pads and the coil 2;
6. baking: and (5) putting the product into an oven for baking to solidify the glue.
The invention adopts the flat wire winding, and sequentially carries out the processes of dispensing, baking, pin assembling, magnetic shield dispensing and baking, the rated current can bear 3A to 100A, the inductance value of the inductor only falls to 40 percent of the nominal inductance value when the saturated current of the inductor is applied to the rated current value from zero ampere, the inductance value cannot fall to zero completely, and the specific figure is shown in the attached figure 4 of the specification.
The inductance of the invention can not generate saturation in rated current, and the invention has the characteristics of stable inductance, larger current resistance, high current-carrying capacity and the like, and the thick wire and the thin wire can both use automatic winding, thereby improving the production efficiency.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The utility model provides a novel unsaturated inductor of magnetic screen, its characterized in that, includes bar-shaped magnetic core (1), coil (2), pin (3), magnetic shield (4), bonding glue (8), be scribbled on bar-shaped magnetic core (1) bonding glue (8), coil (2) winding is in on bar-shaped magnetic core (1), bar-shaped magnetic core (1) is close to its both ends department and all is equipped with pin (3), pin (3) with the both ends welding of coil (2) is in the same place, the inside of magnetic shield (4) is equipped with respectively with coil (2) outside and bar-shaped magnetic core (1) both ends cooperation fixed first U type groove (6) and second U type groove (7), all scribble in first U type groove (6) and second U type groove (7) bonding glue (8).
2. A production method of a novel magnetic shielding unsaturated inductor comprises the following specific steps:
(1) the coil (2) adopts a flat wire winding, and the width and the thickness of a copper wire are selected according to a required current value;
(2) dispensing: coating adhesive (8) on the bar-shaped magnetic core (1), inserting the bar-shaped magnetic core (8) into the coil (2) after the adhesive is coated, and keeping the same exposed distance of the two ends of the bar-shaped magnetic core (1);
(3) baking: putting the product with the glue in an oven for baking, and solidifying the glue to bond the coil (2) and the rod-shaped magnetic core (1);
(4) assembly of pins (3): after the coil (2) is placed in the jig (5), pins (3) are placed at two ends of the coil (2), and then the pins (3) are welded on two end connectors of the coil (2);
(5) dispensing with the magnetic shield (4): placing the magnetic cover (4) into a jig (5), dispensing in a first U-shaped groove (6) and a second U-shaped groove (7) in the magnetic cover (5), placing the coil (2), and locking the jig (5) to enable the jig (5) to press two bonding pads and the coil (2);
(6) baking: and (5) putting the product into an oven for baking to solidify the glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194461.2A CN111477436A (en) | 2020-03-19 | 2020-03-19 | Novel magnetic shielding unsaturated inductor and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194461.2A CN111477436A (en) | 2020-03-19 | 2020-03-19 | Novel magnetic shielding unsaturated inductor and production method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111477436A true CN111477436A (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010194461.2A Withdrawn CN111477436A (en) | 2020-03-19 | 2020-03-19 | Novel magnetic shielding unsaturated inductor and production method thereof |
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| CN (1) | CN111477436A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114823107A (en) * | 2022-05-20 | 2022-07-29 | 南宁市三礼电子有限公司 | Inductor assembly machine |
| CN119581199A (en) * | 2025-02-07 | 2025-03-07 | 深圳市艺感科技有限公司 | A low-noise assembled chip inductor and its preparation method |
-
2020
- 2020-03-19 CN CN202010194461.2A patent/CN111477436A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114823107A (en) * | 2022-05-20 | 2022-07-29 | 南宁市三礼电子有限公司 | Inductor assembly machine |
| CN119581199A (en) * | 2025-02-07 | 2025-03-07 | 深圳市艺感科技有限公司 | A low-noise assembled chip inductor and its preparation method |
| CN119581199B (en) * | 2025-02-07 | 2025-06-13 | 深圳市艺感科技有限公司 | A low-noise assembled chip inductor and its preparation method |
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Application publication date: 20200731 |
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| WW01 | Invention patent application withdrawn after publication |