CN213905093U - Inductor core assembly and inductor including the same - Google Patents
Inductor core assembly and inductor including the same Download PDFInfo
- Publication number
- CN213905093U CN213905093U CN202022026023.3U CN202022026023U CN213905093U CN 213905093 U CN213905093 U CN 213905093U CN 202022026023 U CN202022026023 U CN 202022026023U CN 213905093 U CN213905093 U CN 213905093U
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- Prior art keywords
- wall
- inductor
- core assembly
- magnetic
- magnetic core
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- 230000005291 magnetic effect Effects 0.000 claims abstract description 85
- 239000004020 conductor Substances 0.000 claims description 16
- 230000004907 flux Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 239000012777 electrically insulating material Substances 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 2
- 239000002902 ferrimagnetic material Substances 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
Classifications
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- 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
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
-
- 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
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
- H01F17/062—Toroidal core with turns of coil around it
-
- 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
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
-
- 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
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- 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
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/325—Coil bobbins
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
An inductor core assembly comprises a first magnetic core (11), a second magnetic core (12) and an enclosure (2) enclosing the first magnetic core (11) and the second magnetic core (12). The enclosure (2) comprises an enclosure body (20) having a first wall (21), a second wall (22) and a third wall (23). The first wall (21), the first portion (221) of the second wall (22), and the first portion (231) of the third wall (23) are located beside the first magnetic core (11). A second portion (222) of the second wall (22) and a second portion (232) of the third wall (23) are located alongside the second magnetic core (12). The first core (11) and the second core (12) are located on opposite sides of the first wall (21).
Description
Technical Field
The utility model relates to an inductor core subassembly and including inductor of this inductor core subassembly.
Background
Known inductor core assemblies include a magnetic core enclosed in a plastic enclosure. The manufacturing techniques of magnetic cores limit the width of the magnetic core, which results in some inductor cores having to use multiple magnetic cores placed side by side. The magnetic cores must be electrically insulated from each other, so a wide inductor core assembly is achieved by placing the magnetic cores enclosed in a plastic enclosure adjacent to each other.
A disadvantage of the known wide inductor core assembly described above is that it requires a lot of assembly work.
SUMMERY OF THE UTILITY MODEL
The object of the utility model is to develop an inductor core subassembly and including this inductor core subassembly that can solve above-mentioned problem. The object of the present invention is achieved by an inductor core assembly and an inductor comprising the same, as described below.
The utility model discloses based on provide the enclosure with two magnetic cores enclosure for inductor core subassembly.
In a first aspect of the present invention, an inductor core assembly is provided. This inductor core subassembly includes: a first magnetic core and a second magnetic core, both of which are made of a magnetic material; an enclosure made of an electrically insulating material and enclosing a first magnetic core, the enclosure comprising an enclosure body having a first wall, a second wall and a third wall, such that the first wall, a first portion of the second wall and a first portion of the third wall are positioned adjacent to the first magnetic core, and the second wall and the third wall are at a distance from each other, such that the first magnetic core is located between the first portion of the second wall and the first portion of the third wall, and the first wall connects the second wall and the third wall, characterized in that the enclosure encloses a second magnetic core, such that the first wall of the enclosure is adjacent to the second magnetic core, the first magnetic core and the second magnetic core are located on opposite sides of the first wall, and the second portion of the second wall and the second portion of the third wall are adjacent to the second magnetic core.
The utility model discloses an inductor core subassembly's advantage has reduced required equipment work volume. For example, assembly effort is reduced by the present invention's inductor core assembly having fewer parts than similar prior art assemblies. In addition, the inductor core assembly of the present invention is advantageous from a space usage perspective, as there is only one enclosure wall between the magnetic cores. Furthermore, the inductor core assembly of the present invention is more robust than similar prior art assemblies because fewer components need to be placed side-by-side.
In a second aspect of the present invention, an inductor is provided. The inductor includes: an inductor core assembly; a first conductor positioned adjacent to the inductor core assembly such that a current generated in the first conductor induces a magnetic flux to the inductor core assembly; a second conductor positioned adjacent to the inductor core assembly such that a current generated in the second conductor induces a magnetic flux to the inductor core assembly; characterized in that the inductor core assembly comprises an inductor core assembly as described in the first aspect of the present invention.
Drawings
The invention will now be described in more detail in connection with preferred embodiments and with reference to the accompanying drawings, in which:
figure 1 shows an inductor core assembly according to an embodiment of the present invention;
FIG. 2 is an exploded view of the inductor core assembly of FIG. 1;
FIG. 3 shows the inductor core assembly of FIG. 1 in cross-section;
FIG. 4 shows a detail of the cross-section of FIG. 3, viewed from a direction perpendicular to the plane of the cross-section of FIG. 3; and
fig. 5 is an exploded view of the cross-section shown in fig. 4.
Detailed Description
Fig. 1 shows inductor core assembly 101, while fig. 2 is an exploded view thereof. In fig. 3, inductor core assembly 101 of fig. 1 is shown in cross-section for illustrating the internal structure of inductor core assembly 101.
The first and second magnetic cores 11, 12 are shaped to form a path for magnetic flux having a substantially rounded rectangular shape at the corners. The first magnetic core 11 and the second magnetic core 12 are the same component as each other. In an alternative embodiment, first and second magnetic cores 11, 12 are shaped to form a substantially circular or elliptical path for magnetic flux.
The first magnetic core 11 and the second magnetic core 12 are made of a nanocrystalline mixture. In an alternative embodiment, the first and second magnetic cores are made of another magnetic material. In this context, magnetic material refers to ferromagnetic or ferrimagnetic material. The enclosure 2 is made of an electrically insulating material.
The enclosure 2 includes an enclosure body 20 having a first wall 21, a second wall 22, and a third wall 23. The enclosure body 20 is a one-piece component made by injection molding. In addition, the enclosure 2 comprises a fourth wall 24 and a fifth wall 25.
The first magnetic core 11 is received in a first recess formed by the enclosure body 20, and the second magnetic core 12 is received in a second recess formed by the enclosure body 20. The shape of the first recess corresponds to the shape of first magnetic core 11, and the shape of the second recess corresponds to the shape of second magnetic core 12.
As shown in fig. 3, due to the loop shape of inductor core assembly 101, both first magnetic core 11 and second magnetic core 12 pass through the cross-sectional plane at two locations. In fig. 4 and 5, only one of these positions is shown, as the other position in the figures will be identical without containing further information.
Fig. 4 shows a detail of the cross-section of fig. 3, viewed from a direction perpendicular to the plane of the cross-section of fig. 3, and fig. 5 is an exploded view of the cross-section of fig. 4. At the positions defined in fig. 4 and 5, inductor core assembly 101 is adapted to conduct magnetic flux in a direction perpendicular to the cross-section in its in-use condition.
In fig. 4 and 5, the first magnetic core 11 and the second magnetic core 12 are rectangular in cross section.
Fig. 4 and 5 show that the cross-section of enclosure body 20 comprises an H-form when the cross-sectional plane is perpendicular to the direction of inductor core assembly 101 adapted to conduct magnetic flux in a use state. In the cross-sections of fig. 4 and 5, the second wall 22 and the third wall 23 are mutually parallel walls, the first wall 21 being perpendicular to the second wall 22 and the third wall 23. In other words, the second wall 22 and the third wall 23 form "side lines" in the form of H in the cross-section of the enclosure body 20, and the first wall 21 forms "cross lines" in the form of H.
The first wall 21, the first portion 221 of the second wall 22, and the first portion 231 of the third wall 23 are located beside the first magnetic core 11. The first wall 21, the second portion 222 of the second wall 22, and the second portion 232 of the third wall 23 are located beside the second magnetic core 12. The first core 11 and the second core 12 are located on opposite sides of the first wall 21. First wall 21 mechanically separates first and second magnetic cores 11, 12 from each other, thereby protecting their fragile structure from stress caused by magnetostriction and external vibrations.
The second wall 22 and the third wall 23 are spaced apart from each other by a distance such that the first magnetic core 11 is located between the first portion 221 of the second wall 22 and the first portion 231 of the third wall 23. The first wall 21 connects the second wall 22 and the third wall 23, and separates a first recess and a second recess formed by the enclosure body 20.
The fourth wall 24 and the fifth wall 25 of the enclosure 2 are at a distance from each other such that the first magnetic core 11 is located between the fourth wall 24 and the first wall 21 and such that the second magnetic core 12 is located between the fifth wall 25 and the first wall 21. The fourth wall 24 is located beside the first magnetic core 11 and the fifth wall 25 is located beside the second magnetic core 12.
The fourth wall 24 and the fifth wall 25 of the enclosure 2 are made of the same material as the enclosure body 20. In an alternative embodiment, the fourth wall and the fifth wall are made of a different material than the enclosure body. In another alternative embodiment, the fourth wall and the fifth wall are replaced by a resin layer.
The fourth wall 24 and the fifth wall 25 are connected to the enclosure body 20 by gluing. In an alternative embodiment, the fourth and fifth walls are joined to the enclosure body by taping, welding, snap-fit connection or crimp connection.
According to the utility model discloses an inductor includes: according to the utility model discloses an inductor core assembly; and a first conductor positioned adjacent to the inductor core assembly such that, in use, a current generated in the first conductor induces a magnetic flux to the inductor core assembly. In one embodiment, the inductor core assembly has a closed loop shape and the first conductor extends through the loop. In another embodiment, the inductor core assembly has a closed loop shape and the first conductor is wound around the inductor core assembly such that the first conductor forms a plurality of first coil windings, each coil winding passing through the loop.
In one embodiment, the inductor is a common mode inductor and therefore, in addition to the first conductor, the inductor comprises a second conductor which is placed in close proximity to the inductor core assembly such that, in use, a current generated in the second conductor induces a magnetic flux to the inductor core assembly. Common mode inductors are well known in the art and therefore will not be described in detail herein.
It will be obvious to a person skilled in the art that the basic idea of the invention can be implemented in many different ways. The invention and its embodiments are thus not limited to the examples described above, but may vary within the scope of the claims.
Claims (11)
1. An inductor core assembly, comprising:
a first magnetic core (11) and a second magnetic core (12), both the first magnetic core (11) and the second magnetic core (12) being made of a magnetic material,
an enclosure (2), the enclosure (2) being made of an electrically insulating material and enclosing the first magnetic core (11), the enclosure (2) comprising an enclosure body (20) having a first wall (21), a second wall (22) and a third wall (23), such that the first wall (21), a first portion (221) of the second wall (22) and a first portion (231) of the third wall (23) are located adjacent to the first magnetic core (11), and the second wall (22) and the third wall (23) are at a distance from each other such that the first magnetic core (11) is located between the first portion (221) of the second wall (22) and the first portion (231) of the third wall (23), and the first wall (21) connects the second wall (22) and the third wall (23), characterized in that,
the enclosure (2) encloses the second magnetic core (12) such that a first wall (21) of the enclosure (2) is adjacent to the second magnetic core (12), the first and second magnetic cores (11, 12) are located on opposite sides of the first wall (21), and a second portion (222) of the second wall (22) and a second portion (232) of the third wall (23) are adjacent to the second magnetic core (12).
2. The inductor core assembly according to claim 1, characterized in that the enclosure body (20) is one-piece.
3. Inductor core assembly according to claim 1 or 2, characterized in that the cross-section of the enclosure body (20) comprises an H-form when the cross-sectional plane of the enclosure body (20) is perpendicular to the direction of the inductor core assembly (101) adapted to conduct magnetic flux in a state of use.
4. Inductor core assembly according to claim 1 or 2, characterized in that the first magnetic core (11) and the second magnetic core (12) are made of a nanocrystalline mixture.
5. Inductor core assembly according to claim 1 or 2, characterized in that the enclosure body (20) is made of plastic material.
6. Inductor core assembly according to claim 1 or 2, characterized in that the enclosure body (20) comprises polyamide or polycarbonate.
7. Inductor core assembly according to claim 1 or 2, characterized in that the inductor core assembly (101) is in the shape of a closed loop such that the first magnetic core (11) and the second magnetic core (12) form the following path: the path has the form of a closed loop for the magnetic flux.
8. Inductor core assembly according to claim 1 or 2, characterized in that the enclosure (2) comprises a fourth wall (24) and a fifth wall (25) positioned at a distance from each other, such that the first magnetic core (11) is located between the fourth wall (24) and the first wall (21) and the second magnetic core (12) is located between the fifth wall (25) and the first wall (21), and the fourth wall (24) is located beside the first magnetic core (11) and the fifth wall (25) is located beside the second magnetic core (12).
9. The inductor core assembly according to claim 8, characterized in that the fourth wall (24) and the fifth wall (25) are made of the same material as the enclosure body (20).
10. Inductor core assembly according to claim 8, characterized in that the fourth wall (24) and the fifth wall (25) are joined to the enclosure body (20) by gluing, taping, welding, snap-connection or press-connection.
11. An inductor, comprising:
an inductor core assembly;
a first conductor positioned adjacent to the inductor core assembly such that a current generated in the first conductor induces a magnetic flux to the inductor core assembly;
a second conductor positioned adjacent to the inductor core assembly such that a current generated in the second conductor induces a magnetic flux to the inductor core assembly;
the inductor core assembly comprising the inductor core assembly (101) of claim 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FIU20194125 | 2019-09-23 | ||
| FIU20194125 FI12500U1 (en) | 2019-09-23 | 2019-09-23 | Inductor core assembly and inductor comprising an inductor core assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213905093U true CN213905093U (en) | 2021-08-06 |
Family
ID=68542462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022026023.3U Active CN213905093U (en) | 2019-09-23 | 2020-09-16 | Inductor core assembly and inductor including the same |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN213905093U (en) |
| DE (1) | DE202020105405U1 (en) |
| FI (1) | FI12500U1 (en) |
-
2019
- 2019-09-23 FI FIU20194125 patent/FI12500U1/en active IP Right Grant
-
2020
- 2020-09-16 CN CN202022026023.3U patent/CN213905093U/en active Active
- 2020-09-22 DE DE202020105405.8U patent/DE202020105405U1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE202020105405U1 (en) | 2020-12-04 |
| FI12500U1 (en) | 2019-11-15 |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |