CN111667988A - Inductance assembly and preparation method thereof - Google Patents
Inductance assembly and preparation method thereof Download PDFInfo
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- CN111667988A CN111667988A CN202010354384.2A CN202010354384A CN111667988A CN 111667988 A CN111667988 A CN 111667988A CN 202010354384 A CN202010354384 A CN 202010354384A CN 111667988 A CN111667988 A CN 111667988A
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- magnetic core
- gap
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- 238000002360 preparation method Methods 0.000 title abstract description 4
- 230000004907 flux Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 229910000640 Fe alloy Inorganic materials 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- WJZHMLNIAZSFDO-UHFFFAOYSA-N manganese zinc Chemical compound [Mn].[Zn] WJZHMLNIAZSFDO-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- VAWNDNOTGRTLLU-UHFFFAOYSA-N iron molybdenum nickel Chemical compound [Fe].[Ni].[Mo] VAWNDNOTGRTLLU-UHFFFAOYSA-N 0.000 description 1
- -1 iron-aluminum-silicon Chemical compound 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The invention discloses an inductance component and a preparation method thereof, wherein the inductance component comprises a first magnetic core, a second magnetic core and a conductive component between the first magnetic core and the second magnetic core, wherein the first magnetic core comprises a first gap, a middle piece, a surrounding piece surrounding and connected with the middle piece, a space formed between the middle piece and the surrounding piece and two through holes. The two side parts of the U-shaped body of the conductive component are inserted into the two through holes so that the conductive component can be accommodated in the space, the two tail ends of the two side parts, which extend out from the bottom surface of the first magnetic core, are bent to form two connecting parts, and the second magnetic core covers the top surface of the first magnetic core so that the bottom of the U-shaped body is clamped between the intermediate part and the second magnetic core. Therefore, the first gap can control the inductance and saturation current of the inductance assembly of the present invention, and the inductance assembly of the present invention has a magnetic path of a three-dimensional magnetic flux.
Description
Technical Field
The invention relates to the technical field of inductance components, in particular to an inductance component and a preparation method thereof.
Background
An inductance component is a passive electronic component that stores electrical energy in the form of magnetic flux, and resists a change in current by generating an electromotive force due to the change in current, which is called inductance. The inductance component can have the functions of filtering and oscillating in the circuit, and also has the functions of electromagnetic wave interference, electromagnetic radiation shielding, noise filtering in current and the like. The application range of the inductance component is wide, and the inductance component comprises a power supply, a monitor, a switch, a mainboard, a scanner, a telephone, a modem and the like.
In the prior art, the magnetic paths of the inductance assembly are distributed on the same plane regardless of the single magnetic path design or the double magnetic path design, so that the magnetic core provided as the magnetic path is easily saturated.
Thus, there is still a need for improvement and development of the prior art.
Disclosure of Invention
The present invention is directed to an inductor assembly and a method for manufacturing the same, which overcome the above-mentioned drawbacks of the prior art.
The technical scheme adopted by the invention for solving the technical problem is as follows:
in a first aspect, the present invention provides an inductance assembly, wherein the inductance assembly comprises:
the first magnetic core comprises a first gap, a middle piece, a surrounding piece surrounding and connected with the middle piece, a space formed between the middle piece and the surrounding piece and two through holes;
the conductive assembly is accommodated in the space of the first magnetic core and comprises a U-shaped body and two connecting parts extending out of the U-shaped body; and
a second magnetic core covering the first magnetic core,
wherein the inductive component has a magnetic path of magnetic flux in three dimensions.
In one embodiment, the first gap is located at a side of the first magnetic core to separate the side of the first magnetic core from the surrounding member.
In one embodiment, the first gap is located within the first magnetic core to divide the first magnetic core into two portions.
In one embodiment, the U-shaped body of the conductive assembly comprises: the bottom part is clamped between the middle piece and the second magnetic core, and the two side parts are inserted into the two through holes.
In one embodiment, the first magnetic core includes two recesses located at a bottom surface of the first magnetic core and adjacent to the two through holes such that the two connection portions are disposed in the two recesses.
In one embodiment, the first core and the second core have a second gap therebetween.
In a second aspect, the present invention further provides a method for manufacturing an inductor assembly, wherein the method includes:
providing a first magnetic core comprising a first gap, a middle piece, a surrounding piece surrounding and connected with the middle piece, a space formed between the middle piece and the surrounding piece and two through holes;
inserting two side parts of a U-shaped body of a conductive assembly into the two through holes of the first magnetic core so that the conductive assembly is accommodated in the space of the first magnetic core;
bending two tail ends of two side parts of the U-shaped body of the conductive component, which extend out of the bottom surface of the first magnetic core, so as to form two connecting parts; and
covering a second magnetic core on the top surface of the first magnetic core so that the bottom of the U-shaped body of the conductive component is clamped between the intermediate piece and the second magnetic core.
In one embodiment, the first gap is located at a side of the first magnetic core to separate the side of the first magnetic core from the surrounding member.
In one embodiment, the first gap is located within the first magnetic core to divide the first magnetic core into two portions.
In one embodiment, the method further comprises: a second gap is provided between the first magnetic core and the second magnetic core.
The invention has the technical effects that: the first magnetic core of the inductance component of the invention is provided with a gap for storing the potential energy of the inductance component, and the middle part and the surrounding part of the first magnetic core are used as two horizontal closed magnetic circuits, and the second magnetic core is used as a vertical closed magnetic circuit, thereby forming a magnetic path of three-dimensional magnetic flux.
Drawings
Fig. 1 is an exploded view of a first embodiment of an inductance assembly provided by the present invention.
Fig. 2 is a structural diagram of a first embodiment of an inductance assembly provided by the present invention in a first view.
Fig. 3 is a structural diagram of a first embodiment of an inductance assembly provided by the present invention in a second view.
Fig. 4 is a bottom view of a first embodiment of a first core in an inductance assembly provided by the present invention.
Fig. 5 is a sectional view taken along line a-a in fig. 2.
Fig. 6 is a cross-sectional view taken along line B-B of fig. 2.
Fig. 7 is an exploded view of a second embodiment of an inductance assembly provided by the present invention.
Fig. 8 is a structural diagram of a second embodiment of an inductance assembly provided by the present invention in a first view.
Fig. 9 is a structural diagram of a second embodiment of an inductance assembly provided by the present invention in a second view angle.
Fig. 10 is a bottom view of a second embodiment of a first core in an inductance assembly provided by the present invention.
Fig. 11 is a sectional view taken along line a-a in fig. 8.
Fig. 12 is a sectional view taken along line B-B in fig. 8.
Fig. 13 is a flowchart of a method for manufacturing an inductor assembly according to the present invention.
Fig. 14 is a schematic diagram of the magnetic path of the three-dimensional magnetic flux of the inductance assembly of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between the various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-6, an inductance assembly of the present invention includes a first magnetic core 1, a second magnetic core 2, and a conductive element 3.
Specifically, the first magnetic core 1 includes a top surface 11 and a bottom surface 12 opposite to each other, an intermediate member 13, a peripheral member 14, a space 15, a through hole 16, a recess 17, and a first gap G.
The height of the intermediate piece 13 in this embodiment is substantially smaller than the height of the surrounding piece 14, so that the height difference between the intermediate piece 13 and the surrounding piece 14 acts as a space 15 for accommodating the U-shaped body of the conductive component 3. The surrounding member 14 surrounds the intermediate member 13 and is connected to one side of the intermediate member 13, and the two through holes 16 are respectively located at both sides of the intermediate member 13 to separate both sides of the intermediate member 13 from the surrounding member 14, and the first gap G separates the other side of the intermediate member 13 from the surrounding member 14. Furthermore, two recesses 17 are disposed on the bottom surface 12 adjacent to the two through holes 16 for disposing two connecting portions 33 of the conductive element 3.
Further, the second magnetic core 2 includes a top surface 21 and a bottom surface 22 opposite to each other to form a plate-like body, wherein the top surface 21 is a flat surface to be used as a surface-to-be-adsorbed surface when surface-mount technology (SMT) is used. In addition, the second magnetic core 2 is covered on the top surface 11 of the first magnetic core 1 in such a manner that the bottom surface 22 faces the top surface 11 of the first magnetic core 1, and the area of the second magnetic core 2 is slightly larger than or equal to the area of the first magnetic core 1 so as to cover the first magnetic core 1 entirely without exposing the intermediate member 13 therein or the conductive member 3 accommodated in the space 15.
Generally, the material of the first and second magnetic cores 1 and 2 may be, for example, iron alloy, iron powder, iron alloy powder, ferrite, or other magnetic materials, wherein the ferrite may be a ferrite compound containing nickel zinc (NiZn) or manganese zinc (MnZn), and the iron alloy powder may include iron-nickel-molybdenum alloy, iron-aluminum-silicon alloy, or iron-nickel alloy. In other words, the material of the first magnetic core 1 and the second magnetic core 2 is a material that can be a path through which magnetic lines of force pass in the inductance component.
Further, the conductive member 3 includes a bottom portion 31 and two side portions 32 constituting a U-shaped body, and two connecting portions 33 extending from the two side portions 32 of the U-shaped body. As shown in fig. 5, the U-shaped body of the conductive assembly 3 surrounds the middle part 13, so that the bottom 31 is sandwiched between the middle part 13 and the second magnetic core 2, wherein the first gap G is not substantially disposed for the U-shaped body, and as shown in fig. 6, the U-shaped body of the conductive assembly 3 surrounds the middle part 13, so that the two side parts 32 pass through the two through holes 16, so as to be sandwiched between the middle part 13 and the surrounding part 14, and the two connecting parts 33 are formed by bending two ends extending from the bottom 12 of the first magnetic core 1 after the two side parts 32 pass through the two through holes 16, so as to be parallel to the bottom 12 and used as bonding PADs (PAD) for electrical connection. In other words, the U-shaped body and the two connection portions 33 of the conductive member 3 may assume a hat-like shape. Further, the conductive member 3 is embodied as a terminal plate for passing a current, thereby generating magnetic lines of force in the first magnetic core 1 and the second magnetic core 2.
Further, a second gap (not shown) may be provided between the first and second magnetic cores 1 and 2, for example, a high temperature adhesive tape or a copper wire may be attached between the first and second magnetic cores 1 and 2, or particles such as glass beads may be mixed into glue used for joining the first and second magnetic cores 1 and 2, and the first and second magnetic cores 1 and 2 may be separated by a solid having a certain size to form the second gap therebetween. It should be noted that the first gap G of the first magnetic core 1 is generally an air gap (referred to as an air gap), which can be used for the inductance component to store energy, and the inductance characteristic of the inductance component can be adjusted through the gap G, for example, the inductance value and saturation current of the inductance component are controlled, and the second gap between the first magnetic core 1 and the second magnetic core 2 can also be used for the inductance component to store energy, and further can provide the inductance characteristic of the second segment.
As shown in fig. 14, the combination of the first magnetic core 1 and the conductive component 3 is a closed magnetic circuit inductor component, the middle part 13 and the surrounding part 14 of the first magnetic core 1 provide two closed magnetic circuits 4 parallel to the top surface 11 and the bottom surface 12 at two side parts 32 of the conductive component 3, and in addition, the second magnetic core 2 and the first magnetic core 1 also provide closed magnetic circuits 4 perpendicular to the top surface 11 and the bottom surface 12 around the bottom part 31 of the conductive component 3, so as to become three closed magnetic circuits 4 in total, thereby forming a magnetic path of three-dimensional magnetic flux, so that the iron core is not easy to reach magnetic saturation, and thus the inductance can be better controlled.
In another embodiment, referring to fig. 7 to 12, the inductance assembly of the present invention includes a first magnetic core 1', a second magnetic core 2, and a conductive assembly 3. The difference between the inductor and the first magnetic core 1 'and the second magnetic core 2 and the conductive element 3 is the same as the first magnetic core 1' and the second magnetic core and the conductive element 3, which are not described in detail herein.
Further, the first magnetic core 1 ' includes opposite top and bottom surfaces 11 ', 12 ', an intermediate member 13 ', a surrounding member 14 ', a space 15 ', a through hole 16 ', a recess 17 ', and a first gap G '. A first gap G 'is formed in the intermediate member 13' to divide the intermediate member 13 'into two parts each connecting the surrounding members 14'. In addition, as shown in fig. 11 and 12, the U-shaped body of the conductive member 3 surrounds the intermediate member 13 'and surrounds the first gap G', and the conductive member 3 is supplied with current to generate three closed magnetic paths as shown in fig. 14, thereby forming a magnetic path of three-dimensional magnetic flux. In addition, a second gap may be provided between the first magnetic core 1 'and the second magnetic core 2 in addition to the first gap G' of the first magnetic core 1 ', and a second inductance characteristic in addition to the first inductance characteristic of the first gap G' may be provided in addition to the stored potential energy.
Further, the present embodiment also provides a method for manufacturing an electric pole assembly, please refer to fig. 14. The method specifically comprises the following steps:
in step S01, a first core is provided. Specifically, the first magnetic core comprises a top surface, a bottom surface, a first gap, a middle part, a surrounding part, a space between the middle part and the surrounding part, and two through holes, wherein the first gap is arranged on one side surface of the middle part to separate the side surface of the middle part from the surrounding part or arranged in the middle part to separate the middle part into two parts. In addition, a height difference is formed between the middle part and the surrounding part to serve as the space, and two through holes are formed at both sides of the middle part. In addition, the first magnetic core further comprises two concave parts formed on the bottom surface and adjacent to the two through holes.
In step S02, a conductive component is placed in the space within the first core.
In step S03, two ends of the conductive member protruding from the bottom surface of the first magnetic core are bent to form two connection portions. Specifically, the conductive component comprises a bottom part and two side parts which form a U-shaped body, the two side parts of the conductive component are inserted into the two through holes of the first magnetic core and extend out of the two tail ends of the bottom surface of the first magnetic core, and then the two tail ends are bent at the two concave parts of the first magnetic core to form two connecting parts parallel to the bottom surface.
In step S04, a second core is overlaid on the top surface of the first core. Specifically, the cross-sectional area of the second magnetic core may be slightly greater than or equal to the cross-sectional area of the first magnetic core, so that the second magnetic core completely covers the first magnetic core without exposing the intermediate member or the conductive member therein, and the bottom of the U-shaped body of the conductive member may be sandwiched between the intermediate member and the second magnetic core.
In addition, the embodiment may also place a high temperature adhesive tape or a wire between the first magnetic core and the second magnetic core so that a second gap is formed between the first magnetic core and the second magnetic core, or coat glue containing particles such as glass beads between the first magnetic core and the second magnetic core to join the first magnetic core and the second magnetic core so that the second gap is provided between the first magnetic core and the second magnetic core.
In addition, in the above steps S01 to S04, a dispensing operation may be performed to bond the first magnetic core and the second magnetic core by using glue, and the conductive element may be fixed by the U-shaped body buckling the middle part of the first magnetic core and buckling the surrounding parts of the first magnetic core by two connecting parts, and if it is to be firmer, a dispensing operation may be performed at the bottom of the U-shaped body to bond the U-shaped body and the second magnetic core.
In summary, according to the inductor assembly and the manufacturing method thereof of the present invention, the first magnetic core provides a magnetic path in a horizontal direction, the second magnetic core cooperates with the first magnetic core to provide a magnetic path in a vertical direction, thereby forming a three-dimensional magnetic flux and magnetic path, the first magnetic core itself has a first gap to provide a first-stage inductance characteristic, and has the effects of storing energy and controlling inductance and saturation current, and a second gap is further disposed between the first magnetic core and the second magnetic core to provide a second-stage inductance characteristic.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. An inductance assembly, comprising:
the first magnetic core comprises a first gap, a middle piece, a surrounding piece surrounding and connected with the middle piece, a space formed between the middle piece and the surrounding piece and two through holes;
the conductive assembly is accommodated in the space of the first magnetic core and comprises a U-shaped body and two connecting parts extending out of the U-shaped body; and
a second magnetic core covering the first magnetic core,
wherein the inductive component has a magnetic path of magnetic flux in three dimensions.
2. The inductance assembly according to claim 1, wherein said first gap is located at a side of said first magnetic core to separate said side of said first magnetic core from said surrounding member.
3. The inductive assembly of claim 1, wherein said first gap is located within said first magnetic core to divide said first magnetic core into two portions.
4. The inductance assembly according to claim 1, wherein the U-shaped body of the conductive assembly comprises: the bottom part is clamped between the middle piece and the second magnetic core, and the two side parts are inserted into the two through holes.
5. The inductance assembly according to claim 1, wherein the first magnetic core includes two recesses located at a bottom surface of the first magnetic core and adjacent to the two through holes such that the two connection portions are disposed in the two recesses.
6. The inductance assembly of claim 1, wherein said first core and said second core have a second gap therebetween.
7. A method of making an inductor assembly, the method comprising:
providing a first magnetic core comprising a first gap, a middle piece, a surrounding piece surrounding and connected with the middle piece, a space formed between the middle piece and the surrounding piece and two through holes;
inserting two side parts of a U-shaped body of a conductive assembly into the two through holes of the first magnetic core so that the conductive assembly is accommodated in the space of the first magnetic core;
bending two tail ends of two side parts of the U-shaped body of the conductive component, which extend out of the bottom surface of the first magnetic core, so as to form two connecting parts; and
covering a second magnetic core on the top surface of the first magnetic core so that the bottom of the U-shaped body of the conductive component is clamped between the intermediate piece and the second magnetic core.
8. The method of claim 7, wherein the first gap is located at a side of the first core to separate the side of the first core from the surrounding member.
9. The method of claim 7, wherein the first gap is located within the first core to divide the first core into two portions.
10. The method of making an inductance assembly according to claim 7, further comprising: a second gap is provided between the first magnetic core and the second magnetic core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010354384.2A CN111667988A (en) | 2020-04-29 | 2020-04-29 | Inductance assembly and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010354384.2A CN111667988A (en) | 2020-04-29 | 2020-04-29 | Inductance assembly and preparation method thereof |
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| Publication Number | Publication Date |
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| CN111667988A true CN111667988A (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010354384.2A Pending CN111667988A (en) | 2020-04-29 | 2020-04-29 | Inductance assembly and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117316603A (en) * | 2023-11-30 | 2023-12-29 | 寰美电子(深圳)有限公司 | Inductance assembly and manufacturing process thereof |
| CN117316603B (en) * | 2023-11-30 | 2024-07-30 | 寰美电子(深圳)有限公司 | Inductance assembly and manufacturing process thereof |
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2020
- 2020-04-29 CN CN202010354384.2A patent/CN111667988A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117316603A (en) * | 2023-11-30 | 2023-12-29 | 寰美电子(深圳)有限公司 | Inductance assembly and manufacturing process thereof |
| CN117316603B (en) * | 2023-11-30 | 2024-07-30 | 寰美电子(深圳)有限公司 | Inductance assembly and manufacturing process thereof |
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