CN208922859U - A kind of inductance core, common mode inductance, electromagnetic interface filter and Switching Power Supply - Google Patents
A kind of inductance core, common mode inductance, electromagnetic interface filter and Switching Power Supply Download PDFInfo
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- CN208922859U CN208922859U CN201821678083.XU CN201821678083U CN208922859U CN 208922859 U CN208922859 U CN 208922859U CN 201821678083 U CN201821678083 U CN 201821678083U CN 208922859 U CN208922859 U CN 208922859U
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Abstract
The utility model embodiment provides a kind of inductance core, common mode inductance, electromagnetic interface filter and Switching Power Supply；It is related to electromagnetic technology field, to solve the low technical problem of inductance core space utilization rate；The inductance core of the utility model includes main body and wrapping post；The main body includes the second side column of the first side column with the side that first side column is arranged in；The wrapping post is arranged on first side column, and second side column is located at the ipsilateral of first side column with the wrapping post；Wherein, second side column is not identical as the shape of the wrapping post, and the wrapping post is used for winding magnetic induction loop.The inductance core of the utility model embodiment is easy to implement flat coiling, compact-sized, space utilization rate is high, in addition, it is also convenient for realizing automatic winding, to greatly reduce cost of labor, while producing efficiency is also greatly improved, improves the consistency of product.
Description
Technical field
The utility model relates to electromagnetic technology field more particularly to a kind of inductance core, common mode inductance, EMI filter and
Switching Power Supply.
Background technique
As Switching Power Supply is in the fast development of industrial circle and field of household appliances, the switching frequency and power of Switching Power Supply are close
Degree is also being continuously improved, so that Switching Power Supply develops towards miniaturization, integrated, high frequency direction, this is just to Switching Power Supply
Functional circuit volume and performance more stringent requirements are proposed；Wherein, EMI filter is vital a part, EMI
The main function of filter is to remove differential mode and common-mode noise brought by high-speed switch for considering, and in traditional electromagnetic interface filter
Lower to the utilization rate in space, parasitic parameter is big, is not easy to produce and process.
Electromagnetic interface filter main member includes common mode inductance；The constituent element of common mode inductance specifically includes that 1, high magnetic permeability
Magnetic material；2, magnetic circuit closed；3, the coil being wound on magnetic core has certain the number of turns, and the usual more magnetic strength amounts of the number of turns are bigger.
Conventional common mode inductance is broadly divided into annular common mode inductance and UU type common mode inductance, however both common mode inductances are equal
There are larger deficiencies.Annular common mode inductance: (1) being limited by inner diameter size, can pitch of the laps number it is limited；(2) magnet ring utilization rate and space
Utilization rate is lower；(3) flat coiling is difficult to carry out；(4) artificial coiling is needed, production efficiency is low.UU type common mode inductance: (1) flat
Flat coiling is difficult to carry out；(2) in high current, sub-thread enameled wire is needed using larger sectional area, and when coiling is easy impaired
And influence insulation performance；(3) low using both sides or unilateral coiling, space utilization rate.
Utility model content
The utility model provides the inductance core that one kind is compact-sized, magnetic strength amount is big, easy to process, common mode inductance, EMI
Filter and Switching Power Supply.
A kind of inductance core, including main body and wrapping post；
The main body includes the second side column of the first side column with the side that first side column is arranged in；
The wrapping post is arranged on first side column, and second side column and the wrapping post are located at described first
Side column it is ipsilateral；
Wherein, second side column is not identical as the shape of the wrapping post, and the wrapping post is used for winding magnetic induction loop.
As an example, the main body is L shape, first side column and second side column are arranged in a mutually vertical manner.
As an example, the section of the wrapping post is round rectangle, ellipse, circle, any one in quadrangle.
As an example, the one side of the wrapping post towards second side column is configured to arch cambered surface, second side
The one side towards the wrapping post of column is configured to the cambered surface of indent.
As an example, the cambered surface of the arch cambered surface and the indent is arranged concentrically.
As an example, the either flush of the top surface of second side column and the wrapping post.
As an example, the material of the inductance core is powder core, iron sial, any one in ferrite.
A kind of common mode inductance, including inductance core described in two magnetic induction loops and two any one of the above；
Wherein, on two wrapping posts rotating around being equipped with a magnetic induction loop, the of inductance core
The top surface of two side columns is abutted with the top surface of the second side column of inductance core described in another, the wrapping post of an inductance core
Top surface abutted with the top surface of the wrapping post of inductance core described in another.
A kind of electromagnetic interface filter, including above-mentioned common mode inductance.
A kind of Switching Power Supply, including rectification circuit and DC/DC converter, wherein the Switching Power Supply further includes above-mentioned
Electromagnetic interface filter.
The beneficial effect of the utility model embodiment is:
The inductance core of the utility model embodiment is easy to implement flat coiling, compact-sized, space utilization rate is high, separately
Outside, it is also convenient for realizing automatic winding, to greatly reduce cost of labor, while producing efficiency is also greatly improved, mentions
The consistency of product is risen.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the utility model embodiment inductance core；
Fig. 2 is the schematic perspective view on the inductance core of the utility model embodiment with magnetic induction loop；
Fig. 3 is the front view for the inductance core that the utility model is implemented；
Fig. 4 is the schematic perspective view of the common mode inductance of the utility model embodiment.
Appended drawing reference:
1- inductance core；The first side column of 11-；The second side column of 12-；13- wrapping post；2- magnetic induction loop.
Specific embodiment
In order to make those skilled in the art better understand the technical solution of the utility model, with reference to the accompanying drawings of the specification
The utility model embodiment is described in detail.
In a first aspect, the utility model embodiment provides a kind of inductance core, and as shown in Figure 1 to Figure 3, inductance core 1
Including main body and wrapping post 13, wrapping post 13 is used for winding magnetic induction loop 2；Main body includes the first side column 11 and is arranged on the first side
Second side column 12 of the side of column 11；Wrapping post 13 is arranged on the first side column 11, and the second side column 12 is located at wrapping post 13
First side column 11 it is ipsilateral；Wherein, the second side column 12 is not identical as the shape of wrapping post 13.
Specifically, main body is L shape, 12 phase of the first side column 11 and the second side column in embodiment provided by the utility model
It is mutually vertically arranged, the section of wrapping post 13 is round rectangle；The top surface of second side column 12 and the either flush of wrapping post 13.Into one
Step, in order to enable it is capable of the coil of winding more (or diameter is bigger) while the structure of inductance core 1 is more compact,
In embodiment provided by the utility model, due to the rounded rectangle in the section of wrapping post 13, wrapping post 13 is towards the second side
The one side of column 12 is configured to arch (column) cambered surface, and the one side towards wrapping post 13 of the second side column 12 is configured to indent
(column) cambered surface；Further, the cambered surface of arch cambered surface and indent is arranged concentrically.
Wherein, since the section of wrapping post 13 is round rectangle, there is no more sharp for the periphery of wrapping post 13
Corner angle will not make coil when flat coil or larger-diameter enameled wire (coil) are wound around the periphery of wrapping post 13
At damage, to have stronger reliability.
In addition, in other embodiments, the section of wrapping post 13 can also be any in ellipse, circle, quadrangle
It is a kind of.For example, the area of section of wrapping post 13 should be less than the section of the second side column 12 when the section of wrapping post 13 is square
Area for coil provides more coiling spaces with this；At the same time, since wrapping post 13 is towards the side of the second side column 12
Face is plane, and therefore, the one side towards wrapping post 13 of the second side column 12 is also plane.Wherein, this structure setting is more
It is suitble to the coil of the more the number of turns of winding, so that the significant increase magnetic strength amount of coil, improves service performance.
Further, the material of inductance core 1 is powder core, iron sial, any one in ferrite, art technology
Personnel the material to inductance core 1 can make corresponding selection according to actual needs, and the utility model is not especially limited this.Separately
Outside, L shape main body and wrapping post 13 are fixed as one again after can making molding respectively, and this structure setting is convenient for according to actually making
Being selected and replaced accordingly with planform of the demand to wrapping post 13 (can choose section such as round rectangle, circle
Deng wrapping post 13), to reduce cost of manufacture；In addition, inductance core 1 can be an integral molding structure.In actual fabrication, this
Field technical staff can the preparation process according to actual needs to inductance core 1 make adaptability selection, the utility model to this not
Make specific limit.
Second aspect, the utility model embodiment additionally provides a kind of common mode inductance, as shown in figure 4, common mode inductance includes
Two magnetic induction loops 2 and two above-mentioned same type of inductance cores 1；Wherein, rotating around equipped with one on two wrapping posts 13
A magnetic induction loop 2, the top of the second side column 12 of the top surface and another inductance core 1 of the second side column 12 of an inductance core 1
Face abuts, and the top surface of the wrapping post 13 of the top surface and another inductance core 1 of the wrapping post 13 of an inductance core 1 abuts, with
Form the magnetic circuit of closure.Wherein, two inductance cores 1 can be fixedly connected using adhesive tape or dispensing, can also be used certainly
Other connectors are fixed, and those skilled in the art can be according to actual needs to the connection type between two inductance cores 1
It is reasonably selected, therefore not to repeat here for the present embodiment.
Specifically, when being assembled, can first pass through process equipment flat wire or round enameled wire are turned to (with around
The cross sectional shape of terminal 13 is corresponding) magnetic induction loop 2, then coil after molding is wound around on wrapping post 13, finally will
Two inductance cores 1 with coil are fixedly connected, to be assembled into common mode inductance.
Wherein, in other embodiments, the winding method of magnetic induction loop 2 can also be adjusted accordingly, to be assembled into
Differential mode inductance；Wherein, the winding method of magnetic induction loop 2 is technological means well known to those skilled in the art in differential mode inductance,
This is not repeated.
The third aspect, the utility model embodiment additionally provide a kind of electromagnetic interface filter (not shown) comprising above-mentioned
Common mode inductance.By the above-mentioned common mode inductance of application so that the internal structure of electromagnetic interface filter is more compact, so as to
The volume size of electromagnetic interface filter is advanced optimized, simultaneously, moreover it is possible to further enhance its filter effect.
Fourth aspect, the utility model embodiment additionally provide a kind of Switching Power Supply (not shown), including rectified current
Road and DC/DC converter, wherein Switching Power Supply further includes above-mentioned electromagnetic interface filter.By application above-mentioned electromagnetic interface filter from
And make the structure of Switching Power Supply more compact, so that Switching Power Supply can satisfy more harsh volume and performance
Requirement so that its application field is more broad.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (9)
1. a kind of inductance core, which is characterized in that including main body and wrapping post；
The main body includes the second side column of the first side column with the side that first side column is arranged in；
The wrapping post is arranged on first side column, and second side column and the wrapping post are located at first side column
It is ipsilateral；
Wherein, second side column is not identical as the shape of the wrapping post, and the wrapping post is used for winding magnetic induction loop, described
The either flush of the top surface of second side column and the wrapping post.
2. inductance core according to claim 1, which is characterized in that the main body is L shape, first side column and described
Second side column is arranged in a mutually vertical manner.
3. inductance core according to claim 1, which is characterized in that the section of the wrapping post is round rectangle, ellipse
Shape, circle, any one in quadrangle.
4. inductance core according to claim 1, which is characterized in that the wrapping post is towards the side of second side column
Surface construction is arch cambered surface, and the one side towards the wrapping post of second side column is configured to the cambered surface of indent.
5. inductance core according to claim 4, which is characterized in that the cambered surface of the arch cambered surface and the indent is concentric
Setting.
6. inductance core according to claim 1, which is characterized in that the material of the inductance core is powder core, iron silicon
Any one in aluminium, ferrite.
7. a kind of common mode inductance, which is characterized in that including two magnetic induction loops and two any one of such as claims 1 to 6
The inductance core；
Wherein, rotating around equipped with a magnetic induction loop, the second side of an inductance core on two wrapping posts
The top surface of column is abutted with the top surface of the second side column of inductance core described in another, the top of the wrapping post of an inductance core
Face is abutted with the top surface of the wrapping post of inductance core described in another.
8. a kind of electromagnetic interface filter, which is characterized in that including the common mode inductance described in claim 7.
9. a kind of Switching Power Supply, including rectification circuit and DC/DC converter, which is characterized in that the Switching Power Supply further include as
Electromagnetic interface filter according to any one of claims 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821678083.XU CN208922859U (en) | 2018-10-16 | 2018-10-16 | A kind of inductance core, common mode inductance, electromagnetic interface filter and Switching Power Supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821678083.XU CN208922859U (en) | 2018-10-16 | 2018-10-16 | A kind of inductance core, common mode inductance, electromagnetic interface filter and Switching Power Supply |
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| Publication Number | Publication Date |
|---|---|
| CN208922859U true CN208922859U (en) | 2019-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821678083.XU Active CN208922859U (en) | 2018-10-16 | 2018-10-16 | A kind of inductance core, common mode inductance, electromagnetic interface filter and Switching Power Supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112582140A (en) * | 2020-12-24 | 2021-03-30 | 深圳市斯比特电子有限公司 | Large-current common-mode inductor |
| CN114156041A (en) * | 2021-12-07 | 2022-03-08 | 捷蒽迪电子科技(上海)有限公司 | Magnetic core structure and magnetic element |
-
2018
- 2018-10-16 CN CN201821678083.XU patent/CN208922859U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112582140A (en) * | 2020-12-24 | 2021-03-30 | 深圳市斯比特电子有限公司 | Large-current common-mode inductor |
| CN114156041A (en) * | 2021-12-07 | 2022-03-08 | 捷蒽迪电子科技(上海)有限公司 | Magnetic core structure and magnetic element |
| CN114156041B (en) * | 2021-12-07 | 2024-01-12 | 捷蒽迪电子科技(上海)有限公司 | Magnetic core structure and magnetic element |
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| TR01 | Transfer of patent right |
Effective date of registration: 20201023 Address after: Ohio, USA Patentee after: Dimension Corp. Address before: 1510 Kansas street, Loren, Ohio Patentee before: Emerson Energy Systems, AB |