CN206059077U - Common mode inductance and electronic equipment - Google Patents

Common mode inductance and electronic equipment Download PDF

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Publication number
CN206059077U
CN206059077U CN201621044161.1U CN201621044161U CN206059077U CN 206059077 U CN206059077 U CN 206059077U CN 201621044161 U CN201621044161 U CN 201621044161U CN 206059077 U CN206059077 U CN 206059077U
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China
Prior art keywords
magnetic core
common mode
insulating element
mode inductance
wire
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CN201621044161.1U
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李兴南
杨志辉
瞿大昕
李劲松
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Schaffner Electromagnetic Compatibility Shanghai Co Ltd
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Schaffner Electromagnetic Compatibility Shanghai Co Ltd
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Abstract

A kind of common mode inductance and electronic equipment, the common mode inductance include:First insulating element and the second insulating element, first insulating element have the first cavity through first insulating element, and second insulating element has the second cavity through second insulating element;First magnetic core and the second magnetic core, first magnetic core and the second magnetic core have first end and the second end respectively, the first end and the second end of first magnetic core are removably inserted into a side opening of first cavity and the second cavity respectively, and the first end and the second end of second magnetic core are removably inserted into another side opening of first cavity and the second cavity respectively;Wire, is wound on first insulating element and the second insulating element.The utility model proposes common mode inductance can reduce common mode inductance size, improve the manufacture efficiency of common mode inductance.

Description

Common mode inductance and electronic equipment
Technical field
This utility model is related to technical field of electromagnetic compatibility, more particularly to a kind of common mode inductance and electronic equipment.
Background technology
Common mode inductance, is also common mode choke (Common mode Choke), and in circuit design, common mode inductance can be with The effect that electromagnetic interference (Electromagnetic Interference, EMI) is filtered is played, is primarily useful for filtering in power supply Suppression common mode electromagnetic interference signal.In general, common mode inductance has two coils, the two coils are wound on same magnetic core, the number of turn Identical (oppositely wound).So, when the principal current in circuit flows through common mode inductance, principal current is produced in common mode inductance coil Reverse magnetic field and cancel out each other;When there is common mode current flowing through coil, due to the same tropism of common mode current, show can coil For high impedance, stronger damping is produced, with this attenuation common-mode electric current, the purpose of filtering is reached.
In prior art, the manufacture method of common mode inductance is that wire is adopted the side of spiral type coiling by artificial or machine Formula coiling on complete ameristic magnetic core is formed, wherein, magnetic core is generally annular shape.Due to above-mentioned manufacturing process be must be Coiling on magnetic core, and in winding process, coiling instrument (for example, line hook) needs to be deep in the window space of magnetic core (namely the space surrounded on the inside of magnetic core), this causes the coiling of coil be limited by the size of instrument so that common mode inductance The window space (or referred to as window area) of magnetic core is larger, and this causes common mode inductance coil to be difficult to make size optimum, especially During the powerful inductance coil of coiling, as coil needs the maximum current of tolerance larger, it is therefore desirable to use thicker wire, So the size of common mode inductance will be bigger.
Therefore, prior art is faced with the larger-size problem of common mode inductance.
Utility model content
The technical problem that this utility model is solved is how to reduce the size of common mode inductance.
To solve above-mentioned technical problem, this utility model embodiment provides a kind of common mode inductance, including:
First insulating element and the second insulating element, first insulating element have through first insulating element First cavity, second insulating element have the second cavity through second insulating element;
First magnetic core and the second magnetic core, first magnetic core and the second magnetic core have first end and the second end respectively, The first end and the second end of first magnetic core are removably inserted into the side of first cavity and the second cavity respectively Opening, the first end and the second end of second magnetic core are removably inserted into first cavity and the second cavity respectively Another side opening;
Wire, is wound on first insulating element and the second insulating element.
Alternatively, the first end of the first end of first magnetic core and second magnetic core is plane, and described First cavity inner faces contact;The second end of the second end of first magnetic core and second magnetic core is plane, and in institute State the second cavity inner faces contact.
Alternatively, first magnetic core is shaped as circular arc, nonocclusive rectangle, I shapes or U-shaped;Second magnetic core Be shaped as circular arc, nonocclusive rectangle, I shapes or U-shaped.
Alternatively, the cross section of the wire is circle.
Alternatively, the cross section of the wire is rectangle.
Alternatively, the cross section of the wire has long side and minor face;The long side of adjacent two circles wire is bonded to each other, described The minor face of wire is contacted with first insulating element or the second insulating element.
Alternatively, the cross section of the wire has long side and minor face;The minor face of adjacent two circles wire is bonded to each other, described The long side of wire is contacted with first insulating element or the second insulating element.
Alternatively, the common mode inductance is single-phase common mode inductance or three-phase common mode inductance.
To solve above-mentioned technical problem, this utility model embodiment also provides a kind of electronic equipment, including above-described Common mode inductance.
Compared with prior art, the technical scheme of this utility model embodiment has the advantages that:
This utility model embodiment provide common mode inductance, can include the first insulating element, the second insulating element, first Magnetic core, the second magnetic core and wire;Wherein, first insulating element is empty with first through first insulating element Chamber, second insulating element have the second cavity through second insulating element;First magnetic core and the second magnetic core There is first end and the second end respectively, the first end and the second end of first magnetic core are removably inserted into institute respectively A side opening of the first cavity and the second cavity is stated, the first end and the second end of second magnetic core are removably inserted respectively Enter another side opening of first cavity and the second cavity;The wire is wound in first insulating element and the second insulation On part.The common mode inductance of this utility model embodiment can realize wire is wound in first insulating element and second first On insulating element, then so that the first end and the second end of first magnetic core are removably inserted into first cavity respectively With a side opening of the second cavity, the first end and the second end of second magnetic core are removably inserted into described first respectively Another side opening of cavity and the second cavity, the coiling of so described wire will be no longer limited by the restriction of coiling instrument, also without The window space of the common mode inductance need to be allowed to adapt to the size of coiling instrument, the window space of common mode inductance can be reduced, from And the size of common mode inductance can be reduced, it is further, empty compared to coiling instrument is deep into magnetic core window in prior art In, then by circle coiling wire, this utility model embodiment can be fast on first insulating element and the second insulating element Fast ground coiling wire, to improve the manufacture efficiency of common mode inductance.
Furthermore, the first end of the first end of first magnetic core and second magnetic core is plane, and The first cavity inner faces contact;The second end of the second end of first magnetic core and second magnetic core is plane, and In the second cavity inner faces contact.Can adopt well known to a person skilled in the art appropriate technique is by the of first magnetic core Between the first end of one end and second magnetic core, and the second end and second magnetic core of first magnetic core The second end is spliced so that in the size for reducing common mode inductance, while improving the manufacture efficiency of common mode inductance, it is ensured that magnetic The integrity of core.
Furthermore, the cross-sectional area of the wire can be the numerous embodiments such as circular or rectangle;Lead when described When the cross-sectional area of line is rectangle and there is long side and during minor face, can put down around or stand by the way of to adopt, in particular by It is vertical around mode, the service efficiency in magnetic core window space can be improved.
Description of the drawings
Fig. 1 is a kind of structure chart of common mode inductance of this utility model embodiment.
Fig. 2 is a kind of exploded view of common mode inductance of this utility model embodiment.
Fig. 3 is the exploded view of this utility model embodiment another kind common mode inductance.
Specific embodiment
As described in the background section, conventionally, as when common mode inductance is manufactured, wire is wound on magnetic core On need coiling instrument is deep in the window space of magnetic core, this causes the coiling of wire be limited by the size of instrument, makes The window space for obtaining the magnetic core of common mode inductance is larger, and this causes common mode inductance to be faced with larger-size problem.
For techniques discussed above problem, this utility model embodiment proposes a kind of common mode inductance, can be by arranging Dismountable first magnetic core and the second magnetic core, so that the wire in common mode inductance can in advance by coiling, also will wire Coiling separate with magnetic core, then can with by the way of splicing by the magnetic core of common mode inductance, insulating element and around making Wire is spliced, so as to avoid the direct coiling wire on magnetic core so that the coiling of the wire will be no longer limited by coiling The restriction of instrument, without allow the common mode inductance window space adapt to coiling instrument size, can be by common mode inductance Window space reduces, such that it is able to reduce the size of common mode inductance.
It is understandable to enable above-mentioned purpose of the present utility model, feature and beneficial effect to become apparent from, below in conjunction with the accompanying drawings Specific embodiment of the utility model is described in detail.
With reference to shown in Fig. 1, this utility model embodiment propose common mode inductance 100 can include the first insulating element 11, Second insulating element 12, the first magnetic core 21, the second magnetic core 22 and wire 31.
Wherein, first insulating element 11 have through first insulating element 11 the first cavity, described second Insulating element 12 has the second cavity through second insulating element 12.
First magnetic core 21 and the second magnetic core 22 have first end and the second end respectively, first magnetic core 21 First end and the second end are removably inserted into a side opening of first cavity and the second cavity, second magnetic respectively The first end and the second end of core 22 is removably inserted into another side opening of first cavity and the second cavity respectively.
The wire 31 is wound on first insulating element 11 and the second insulating element 12.Wherein, the wire 31 Specification should meet about GB requirement (for example:GB6108.3 etc.).
In being embodied as, when common mode inductance 100 is made, can be in first insulating element 11 and the second insulating element Coiling wire 31 on 12, after the completion of 31 coiling of wire, then so that first end and the second end section of first magnetic core 21 A side opening of first cavity and the second cavity, the first end and second of second magnetic core 22 are not removably inserted into End is removably inserted into another side opening of first cavity and the second cavity respectively.Therefore, the coiling of the wire 31 The restriction of coiling instrument will be no longer limited by, without allow the common mode inductance 100 window space adapt to coiling instrument chi It is very little, the window space of common mode inductance 100 can be reduced, such that it is able to reduce the size of common mode inductance 100.Further, phase Than coiling instrument being deep in magnetic core window space in prior art, then by circle coiling wire 31, this utility model is implemented The structure of example common mode inductance 100 can on first insulating element 11 and the second insulating element 12 rapidly coiling wire 31, the time needed for 31 coiling of wire is saved, to improve the manufacture efficiency of common mode inductance 100.
In being embodied as, can adopt well known to a person skilled in the art appropriate technique is by the of first magnetic core 21 The first end splicing of one end and second magnetic core 22 at one, and by the second end of first magnetic core 21 and described The second end splicing of the second magnetic core 22 is at one so that in the size for reducing common mode inductance 100, improve common mode inductance 100 While manufacture efficiency, it is ensured that the integrity of magnetic core.
It should be noted that the material of first insulating element 11 and the second insulating element 12 can be arbitrarily adapted to Material, such as plastics, but be not any limitation as, other any materials that can play insulation and isolation effect;Concrete In enforcement, can be configured according to concrete application demand.
In FIG, first insulating element 11 and the second insulating element 12 employ the structure of " I-shaped " shape, described The first end splicing of the first end of the first magnetic core 21 and second magnetic core 22 at one, the second of first magnetic core 21 In the case that the second end splicing of end and second magnetic core 22 is at one, first insulating element 11 and the second insulation The shapes and sizes of part 12 are fitted in the cavity surrounded by spliced first magnetic core 21 and the second magnetic core 22, to meet altogether The stability of 100 structure of mould inductance.
Additionally, in other embodiment not shown in figure, can be with first insulating element 11 and the second insulation The buckle for mechanically matching is set on part 12, in the cavity surrounded by spliced first magnetic core 21 and the second magnetic core 22 mutually Phase clamping, to be more favorable for the stability of 100 structure of common mode inductance.
Furthermore, the first end of the first end of first magnetic core 21 and second magnetic core 22 can be flat Face, and in the first cavity inner faces contact;Second end of the second end of first magnetic core 21 and second magnetic core 22 Portion can be plane, and in the second cavity inner faces contact.
In the present embodiment, the shape of first magnetic core 21 can be circular arc, nonocclusive rectangle, I shapes or U-shaped; The shape of second magnetic core 22 can also be circular arc, nonocclusive rectangle, I shapes or U-shaped.Wherein, the nonocclusive square Shape refer to it is U-shaped similar with described, but, the turning in the structure of magnetic core be right angle.It should be noted that the present embodiment is not The shape of first magnetic core 21 and the second magnetic core 22 is any limitation as.Specific embodiment is given below to be introduced.
As shown in Fig. 2 in one embodiment, common mode inductance 200 can insulate including the first insulating element 11, second Part 12, the first magnetic core 211, the second magnetic core 221 and wire 31.Wherein, the shape of the first magnetic core 211 and the second magnetic core 221 Identical, for example, first magnetic core 211 is shaped as nonocclusive rectangle, and second magnetic core 221 is shaped as I types.First The specifying information of insulating element 11, the second insulating element 12 and wire 31 is referred to description above to common mode inductance 100, Here is omitted.
As shown in figure 3, in another specific embodiment, common mode inductance 300 can include that the first insulating element 11, second is exhausted Edge part 12, the first magnetic core 212, the second magnetic core 222 and wire 31.Wherein, the shape of the first magnetic core 212 and the second magnetic core 222 Shape is different, and for example, first magnetic core 212 and the second magnetic core 222 are nonocclusive rectangle.First insulating element 11, second The specifying information of insulating element 12 and wire 31 is referred to description above to common mode inductance 100, and here is omitted.
With continued reference to Fig. 1, in the present embodiment, the material of the magnetic core can be ferrite, or other are arbitrarily selected Material.The material of the wire 31 can also be arbitrarily selected, for example, can be copper or aluminum.
In the present embodiment, the cross section of the wire 31 can be circular, rectangle or other shapes.
When the cross section of the wire 31 is rectangle, the cross section of the wire 31 has long side and minor face;Adjacent two circle The long side of wire is bonded to each other, and the minor face of the wire is contacted with first insulating element 11 or the second insulating element 12.This The winding method of kind of wire can be called " vertical around ".When the window space in magnetic core it is less along the arragement direction size of wire, And along conductor height direction size it is larger when, " vertical around " can effectively improve the service efficiency in magnetic core window space.
Or, the minor face of adjacent two circles wire can be made bonded to each other, the long side of the wire and first insulation division Part 11 or the second insulating element 12 are contacted.The winding method of this wire can be called " flat around ".When the window space of magnetic core Along wire arragement direction size enough, but along conductor height direction it is size-constrained when, " flat around " can also improve magnetic core window The service efficiency in mouth space.
In actual applications, in the case of the cross-sectional area identical of wire 31, the horizontal stroke for adjusting wire 31 can also be utilized The length-width ratio in section adjusting the area that wire 31 is contacted with the first magnetic core 21 or the second magnetic core 22, to adapt to window space Shape.
In the present embodiment, the common mode inductance 100 can be single-phase common mode inductance or three-phase common mode inductance.
Due to common mode inductance in actual applications, electromagnetic interference (Electromagnetic can be typically arranged at Interference, EMI) in wave filter, the EMI filtering being especially widely used on power line.In China, typically using three-phase electricity Mode be powered, therefore, three-phase common mode inductance is employed in more scene.Corresponding to phase three-wire three and three-phase and four-line, Common mode inductance 100 in the present embodiment can include three groups of wires or four groups of wires.
Sum it up, the manufacture method of the common mode inductance direct coiling on ring-shaped magnetic core compared to prior art, The present embodiment is separated with magnetic core using the coiling of wire, and the manufacture of common mode inductance is become the splicing of each component, is a kind of point Dissipate assembled manufacture method.So that the common mode inductance window space (window area) of this utility model embodiment is little, its dimensioning Very little to accomplish optimum, inductance coil coiling efficiency high, arrangements of conductors are neat.
This utility model embodiment also discloses a kind of electronic equipment, and the electronic equipment includes the common mode inductance 100.
Specifically, the electronic equipment can be wave filter, Switching Power Supply or transformator etc., and the present embodiment does not carry out spy It is different to limit.
Although this utility model is disclosed as above, this utility model is not limited to this.Any those skilled in the art, Without departing from spirit and scope of the present utility model, can make various changes or modifications, therefore protection domain of the present utility model Should be defined by claim limited range.

Claims (9)

1. a kind of common mode inductance, it is characterised in that include:
First insulating element and the second insulating element, first insulating element have first through first insulating element Cavity, second insulating element have the second cavity through second insulating element;
First magnetic core and the second magnetic core, first magnetic core and the second magnetic core have first end and the second end respectively, described The first end and the second end of the first magnetic core is removably inserted into a side opening of first cavity and the second cavity respectively, The first end and the second end of second magnetic core is removably inserted into the another of first cavity and the second cavity respectively Side opening;
Wire, is wound on first insulating element and the second insulating element.
2. common mode inductance according to claim 1, it is characterised in that the first end of first magnetic core and described second The first end of magnetic core is plane, and in the first cavity inner faces contact;The second end of first magnetic core and described The second end of two magnetic cores is plane, and in the second cavity inner faces contact.
3. common mode inductance according to claim 1, it is characterised in that first magnetic core is shaped as circular arc, non-envelope Rectangle, I shapes or the U-shaped for closing;Second magnetic core is shaped as circular arc, nonocclusive rectangle, I shapes or U-shaped.
4. common mode inductance according to claim 1, it is characterised in that the cross section of the wire is circle.
5. common mode inductance as claimed in claim 1, it is characterised in that the cross section of the wire is rectangle.
6. common mode inductance as claimed in claim 5, it is characterised in that the cross section of the wire has long side and minor face;Phase The long side of adjacent two circle wires is bonded to each other, and the minor face of the wire is contacted with first insulating element or the second insulating element.
7. common mode inductance as claimed in claim 5, it is characterised in that the cross section of the wire has long side and minor face;Phase The minor face of adjacent two circle wires is bonded to each other, and the long side of the wire is contacted with first insulating element or the second insulating element.
8. the common mode inductance as described in any one of claim 1 to 7, it is characterised in that the common mode inductance is single-phase common mode electricity Sense or three-phase common mode inductance.
9. a kind of electronic equipment, it is characterised in that including the common mode inductance described in any one of claim 1 to 8.
CN201621044161.1U 2016-09-08 2016-09-08 Common mode inductance and electronic equipment Active CN206059077U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621044161.1U CN206059077U (en) 2016-09-08 2016-09-08 Common mode inductance and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621044161.1U CN206059077U (en) 2016-09-08 2016-09-08 Common mode inductance and electronic equipment

Publications (1)

Publication Number Publication Date
CN206059077U true CN206059077U (en) 2017-03-29

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Country Status (1)

Country Link
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