CN209591710U - A kind of common mode choke for eliminating electrostatic interference - Google Patents
A kind of common mode choke for eliminating electrostatic interference Download PDFInfo
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- CN209591710U CN209591710U CN201920410412.0U CN201920410412U CN209591710U CN 209591710 U CN209591710 U CN 209591710U CN 201920410412 U CN201920410412 U CN 201920410412U CN 209591710 U CN209591710 U CN 209591710U
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Abstract
The utility model proposes a kind of common mode chokes for eliminating electrostatic interference, including diplopore toroidal core (1) and coiling (2), diplopore toroidal core (1) include first around hole (11) and second around hole (12)；One end of coiling (2) passes through first around hole (11), coiling (2) is wound in first and forms the first winding (21) around the magnetic core of hole (11) and first between the outer wall of hole (11), coiling (2) is wound in first and forms the second winding (22) around the magnetic core of hole (11) and second between hole (12), coiling (2) is wound in second and forms the tertiary winding (23) around the magnetic core of hole (12) and second between the outer wall of hole (12), and the other end of coiling (2) passes through second around hole (12).By the way that existing single beam winding to be divided into the winding construction of three separated beams, the inductance of higher quality factor can be generated while reducing internal winding capacitor, increases common-mode resistance and reduces the capacitor between circle, improve low frequency and high-frequency filtration efficiency.
Description
Technical field
The utility model relates to common mode choke field more particularly to a kind of common mode chokes for eliminating electrostatic interference.
Background technique
For many years, common mode choke has been used for removing common-mode noise from the balance difference mode signal in Ethernet application.
Novel Ethernet in automobile and industrial application needs high EMI/REI filtering, with the unconscious height for preventing power device from generating
Energy enters or leaves its shell, and in current automobile application, it is inadequate in dealing with the high-energy of high-power component generation
External noise, and the electrostatic interference of 6kv or more is eliminated, therefore, the utility model, which provides one kind, can eliminate the quiet of 6kv or more
The common mode choke of electrical interference.
Utility model content
In view of this, the utility model proposes the common mode chokes that one kind can eliminate the electrostatic interference of 6kv or more.
The technical solution of the utility model is achieved in that the utility model provides a kind of being total to for elimination electrostatic interference
Mould choke coil comprising diplopore toroidal core and coiling；
Diplopore toroidal core include first around hole and second around hole；
One end of coiling is wound in the first magnetic core shape around hole and first around the outer wall in hole around hole coiling across first
At the first winding, coiling is wound in first and forms the second winding, coiling winding and second around the magnetic core of hole and second between hole
Around hole and second, the magnetic core between the outer wall in hole forms the tertiary winding, and the other end of coiling passes through second around hole.
On the basis of above technical scheme, the other end of coiling be wound in the counterclockwise direction first around hole and first around
Magnetic core between the outer wall in hole forms the first winding, and the outlet of the first winding is wound in first around hole and second in the counterclockwise direction
Magnetic core between hole forms the second winding, and the outlet of the second winding is wound in second around hole and second around hole in the counterclockwise direction
Outer wall between magnetic core form the tertiary winding, the outlet of the tertiary winding is the other end of coiling.
On the basis of above technical scheme, the other end of coiling be wound in the counterclockwise direction first around hole and first around
Magnetic core between the outer wall in hole forms the first winding, and the outlet of the first winding is wound in first around hole and second in the counterclockwise direction
Magnetic core between hole forms the second winding, and the outlet of the second winding is wound in second around hole and second around hole along clockwise direction
Outer wall between magnetic core form the tertiary winding, the outlet of the tertiary winding is the other end of coiling.
On the basis of above technical scheme, the other end of coiling be wound in the counterclockwise direction first around hole and first around
Magnetic core between the outer wall in hole forms the first winding, and the outlet of the first winding is wound in first around hole and second along clockwise direction
Magnetic core between hole forms the second winding, and the outlet of the second winding is wound in second around hole and second around hole in the counterclockwise direction
Outer wall between magnetic core form the tertiary winding, the outlet of the tertiary winding is the other end of coiling.
On the basis of above technical scheme, the other end of coiling be wound in the counterclockwise direction first around hole and first around
Magnetic core between the outer wall in hole forms the first winding, and the outlet of the first winding is wound in first around hole and second along clockwise direction
Magnetic core between hole forms the second winding, and the outlet of the second winding is wound in second around hole and second around hole along clockwise direction
Outer wall between magnetic core form the tertiary winding, the outlet of the tertiary winding is the other end of coiling.
On the basis of above technical scheme, coiling includes two conducting wires in parallel.
It is further preferred that two the end of a thread of first conducting wire are respectively A the end of a thread and a the end of a thread；
Two the end of a thread of second conducting wire are respectively B the end of a thread and b the end of a thread；
Common mode current on conducting wire flows into common mode choke from A the end of a thread and B the end of a thread respectively, respectively from a the end of a thread and b the end of a thread stream
Common mode choke out.
On the basis of above technical scheme, the number of turns of the first winding is m1, and the number of turns of the second winding is m2, the tertiary winding
The number of turns be m3, wherein m1 be 2 or more arbitrary integer, m2 be 2 or more arbitrary integer, m3 be 2 or more arbitrary integer.
A kind of common mode choke of elimination electrostatic interference of the utility model has below compared with the existing technology beneficial to effect
Fruit:
(1) by the way that existing single beam winding to be divided into the winding construction of three separated beams, internal winding electricity can reduced
While appearance generate higher quality factor inductance, increase common-mode resistance simultaneously reduce the capacitor between circle, improve low frequency and
High-frequency filtration efficiency；
(2) traditional single hole is extended to diplopore, and winding is divided into three independent beams, in each hole, first around
Web is formed in line portion, the second winding section and third winding section, unlike single toroidal core, the winding of the utility model
More nets that structure generates will not be saturated at identical conditions, and can be with the electrostatic interference of elimination 6kv or more.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the typical usage of the prior art；
Fig. 2 is another typical usage of the prior art；
Fig. 3 is a kind of structural schematic diagram of the common mode choke of elimination electrostatic interference of the utility model；
Fig. 4 is the structural schematic diagram of magnetic core in a kind of common mode choke of elimination electrostatic interference of the utility model；
Fig. 5 is a kind of equivalent circuit diagram of the common mode choke of elimination electrostatic interference of the utility model.
Specific embodiment
Below in conjunction with the utility model embodiment, the technical solution in the utility model embodiment is carried out clear
Chu is fully described by, it is clear that and described embodiment is only a part of embodiment of the utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work
Under the premise of every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment one,
As shown in Figure 1, the common mode choke is only in two holes for the embodiment of annular common mode choke in the prior art
Between be wound with a branch of conducting wire.
As shown in Fig. 2, for the embodiment of balanced-to-unbalanced transformer in the prior art, the common mode choke only along
The winding of the outer surface of two holes and two hole sides.
Scheme shown through figure 1 and figure 2 can not eliminate the electrostatic interference of 6kv.Therefore, the utility model provides one kind
The common mode choke of 6kv electrostatic interference can be eliminated.
As shown in figure 3, a kind of common mode choke of elimination electrostatic interference for the utility model comprising magnetic core and Duo Gen
Coiling 2.
In the present embodiment, as shown in figure 4, diplopore toroidal core 1 include first around hole 11 and second around hole 12；
In the present embodiment, coiling 2 includes two conducting wires in parallel, and two the end of a thread of first conducting wire are respectively A the end of a thread
With a the end of a thread, two the end of a thread of second conducting wire are respectively B the end of a thread and b the end of a thread, and the common mode current on conducting wire is respectively from A the end of a thread and B
The end of a thread flows into common mode choke, flows out common mode choke from a the end of a thread and b the end of a thread respectively, and A the end of a thread and B the end of a thread form common mode chokes
The input terminal of circle, the output end of a the end of a thread and b the end of a thread composition common mode choke.By transmit electric current two conducting wires (such as direct current supply
The power and ground of electricity, the firewire and zero curve of Alternating Current Power Supply) turn to coiling.At this moment, the electric current in two conducting wires is in magnetic core
The magnetic line of force of middle generation is contrary, and intensity is identical, just offsets, so magnetic induction intensity total in magnetic core is 0, therefore
Magnetic core will not be saturated.And for the identical common-mode interference current in direction on two conducting wires, then the effect that do not offset is presented larger
Inductance, it is inhibited to common-mode interference current, and differential-mode current is not influenced.
The winding method of the present embodiment are as follows: the other end of coiling 2 is wound in first around hole 11 and first in the counterclockwise direction
Magnetic core between the outer wall in hole 11 forms the first winding 21, the outlet of the first winding 21 be wound in the counterclockwise direction first around
Hole 11 and the second magnetic core between hole 12 form the second winding 22, and the outlet of the second winding 22 is wound in the in the counterclockwise direction
Two form the tertiary winding 23 around the magnetic core of hole 12 and second between the outer wall in hole 12, and the outlet of the tertiary winding 23 is coiling 2
The other end.In simple terms, the present embodiment, the winding method of coiling 2 are as follows: counterclockwise-counterclockwise-counterclockwise.Due to the present embodiment
Winding mode be since the first of diplopore toroidal core 1 around the lower end surface in hole, therefore, when with the of diplopore toroidal core 1
One starts around the upper surface in hole, the mode of winding method and the present embodiment on the contrary, i.e. clockwise-clockwise-clockwise, substantially
Be it is the same, therefore, be not repeated herein.
Wherein, the number of turns of the first winding 21 is m1, and the number of turns of the second winding 22 is m2, and the number of turns of the tertiary winding 23 is m3,
Wherein, the arbitrary integer that m1 is 2 or more, the arbitrary integer that m2 is 2 or more, the arbitrary integer that m3 is 2 or more.
Existing single beam winding is divided into the winding construction of three separated beams by the present embodiment, can reduce internal winding electricity
While appearance generate higher quality factor inductance, increase common-mode resistance simultaneously reduce the capacitor between circle, improve low frequency and
High-frequency filtration efficiency.Since traditional single hole is extended to diplopore by the present embodiment, and winding is divided into three independent beams,
Web is formed in each hole, in the first winding 21, the second winding 22 and the tertiary winding 23, it is different from single toroidal core
It is that more nets that the winding construction of the present embodiment generates will not be saturated at identical conditions.
Embodiment two,
On the basis of example 1, embodiment two provides a kind of new winding mode.The winding method of embodiment two are as follows:
The other end of coiling 2 is wound in first in the counterclockwise direction and forms first around the magnetic core of hole 11 and first between the outer wall in hole 11
Winding 21, the outlet of the first winding 21 are wound in first in the counterclockwise direction and are formed around hole 11 and the second magnetic core between hole 12
Second winding 22, the outlet of the second winding 22 are wound in second around hole 12 and second between the outer wall in hole 12 along clockwise direction
Magnetic core form the tertiary winding 23, the outlet of the tertiary winding 23 is the other end of coiling 2.In simple terms, the present embodiment, coiling 2
Winding method are as follows: counterclockwise-counterclockwise-clockwise.Since the winding mode of the present embodiment is from the of diplopore toroidal core 1
One starts around the lower end surface in hole, therefore, when starting with the first of diplopore toroidal core 1 around the upper surface in hole, winding method and this
The mode of embodiment on the contrary, i.e. clockwise-clockwise-counterclockwise, it is substantially the same, therefore, be not repeated herein.
Embodiment three,
On the basis of example 1, embodiment three provides a kind of new winding method.The winding method of embodiment three are as follows:
The other end of coiling 2 is wound in first in the counterclockwise direction and forms first around the magnetic core of hole 11 and first between the outer wall in hole 11
Winding 21, the outlet of the first winding 21 are wound in first along clockwise direction and are formed around hole 11 and the second magnetic core between hole 12
Second winding 22, the outlet of the second winding 22 are wound in second around hole 12 and second between the outer wall in hole 12 in the counterclockwise direction
Magnetic core form the tertiary winding 23, the outlet of the tertiary winding 23 is the other end of coiling 2.In simple terms, the present embodiment, coiling 2
Winding method are as follows: counterclockwise-clockwise-counterclockwise.Since the winding mode of the present embodiment is from the of diplopore toroidal core 1
One starts around the lower end surface in hole, therefore, when starting with the first of diplopore toroidal core 1 around the upper surface in hole, winding method and this
The mode of embodiment on the contrary, i.e. clockwise-counterclockwise-clockwise, it is substantially the same, therefore, be not repeated herein.
Example IV,
On the basis of example 1, example IV provides a kind of new winding method.The winding method of example IV are as follows:
The other end of coiling 2 is wound in first in the counterclockwise direction and forms first around the magnetic core of hole 11 and first between the outer wall in hole 11
Winding 21, the outlet of the first winding 21 are wound in first along clockwise direction and are formed around hole 11 and the second magnetic core between hole 12
Second winding 22, the outlet of the second winding 22 are wound in second around hole 12 and second between the outer wall in hole 12 along clockwise direction
Magnetic core form the tertiary winding 23, the outlet of the tertiary winding 23 is the other end of coiling 2.In simple terms, the present embodiment, coiling 2
Winding method are as follows: counterclockwise-clockwise-clockwise.Since the winding mode of the present embodiment is from the of diplopore toroidal core 1
One starts around the lower end surface in hole, therefore, when starting with the first of diplopore toroidal core 1 around the upper surface in hole, winding method and this
The mode of embodiment on the contrary, i.e. clockwise-counterclockwise-counterclockwise, it is substantially the same, therefore, be not repeated herein.
Embodiment five,
As shown in figure 5, being the equivalent circuit diagram of common mode choke, wherein G1 and G2 terminal ground, A and B terminal are two
Road common mode current flows into the input terminal of common mode choke, a and b terminal is the output that two-way common mode current flows out common mode choke
End, the effect of transformer T2 are to inhibit common mode current.When common-mode interference current enters common mode choke through A and B terminal, transformation
Device T1 keep current potential, transformer T2 inhibit common mode interference signal, by experiment can obtain, by increase the first winding 21, second around
The number of turns of group 22 and the tertiary winding 23 can make common mode choke eliminate the electrostatic interference of 6kv or more.
The foregoing is merely the better embodiments of the utility model, are not intended to limit the utility model, it is all
Within the spirit and principles of the utility model, it is practical new to should be included in this for any modification, equivalent replacement, improvement and so on
Within the protection scope of type.
Claims (8)
1. a kind of common mode choke for eliminating electrostatic interference comprising diplopore toroidal core (1) and coiling (2), it is characterised in that:
The diplopore toroidal core (1) include first around hole (11) and second around hole (12)；
One end of the coiling (2) passes through first around hole (11), and coiling (2) is wound in first around hole (11) and first around hole (11)
Outer wall between magnetic core form the first winding (21), coiling (2) is wound in first around hole (11) and second between hole (12)
Magnetic core form the second winding (22), coiling (2) is wound in second around hole (12) and the second magnetic between the outer wall of hole (12)
Core forms the tertiary winding (23), and the other end of coiling (2) passes through second around hole (12).
2. a kind of common mode choke for eliminating electrostatic interference as described in claim 1, it is characterised in that: the coiling (2)
The other end be wound in the counterclockwise direction first around the magnetic core between the outer wall of hole (11) of hole (11) and first formed first around
Group (21), the outlet of the first winding (21) are wound in first around hole (11) and the second magnetic between hole (12) in the counterclockwise direction
Core forms the second winding (22), and the outlet of the second winding (22) is wound in second around hole (12) and second around hole in the counterclockwise direction
(12) magnetic core between outer wall forms the tertiary winding (23), and the outlet of the tertiary winding (23) is the other end of coiling (2).
3. a kind of common mode choke for eliminating electrostatic interference as described in claim 1, it is characterised in that: the coiling (2)
The other end be wound in the counterclockwise direction first around the magnetic core between the outer wall of hole (11) of hole (11) and first formed first around
Group (21), the outlet of the first winding (21) are wound in first around hole (11) and the second magnetic between hole (12) in the counterclockwise direction
Core forms the second winding (22), and the outlet of the second winding (22) is wound in second around hole (12) and second around hole along clockwise direction
(12) magnetic core between outer wall forms the tertiary winding (23), and the outlet of the tertiary winding (23) is the other end of coiling (2).
4. a kind of common mode choke for eliminating electrostatic interference as described in claim 1, it is characterised in that: the coiling (2)
The other end be wound in the counterclockwise direction first around the magnetic core between the outer wall of hole (11) of hole (11) and first formed first around
Group (21), the outlet of the first winding (21) are wound in first around hole (11) and the second magnetic between hole (12) along clockwise direction
Core forms the second winding (22), and the outlet of the second winding (22) is wound in second around hole (12) and second around hole in the counterclockwise direction
(12) magnetic core between outer wall forms the tertiary winding (23), and the outlet of the tertiary winding (23) is the other end of coiling (2).
5. a kind of common mode choke for eliminating electrostatic interference as described in claim 1, it is characterised in that: the coiling (2)
The other end be wound in the counterclockwise direction first around the magnetic core between the outer wall of hole (11) of hole (11) and first formed first around
Group (21), the outlet of the first winding (21) are wound in first around hole (11) and the second magnetic between hole (12) along clockwise direction
Core forms the second winding (22), and the outlet of the second winding (22) is wound in second around hole (12) and second around hole along clockwise direction
(12) magnetic core between outer wall forms the tertiary winding (23), and the outlet of the tertiary winding (23) is the other end of coiling (2).
6. a kind of common mode choke for eliminating electrostatic interference as described in claim 1, it is characterised in that: coiling (2) packet
Include two conducting wires in parallel.
7. a kind of common mode choke for eliminating electrostatic interference as claimed in claim 6, it is characterised in that: first conducting wire
Two the end of a thread be respectively A the end of a thread and a the end of a thread；
Two the end of a thread of second conducting wire are respectively B the end of a thread and b the end of a thread；
Common mode current on the conducting wire flows into common mode choke from described A the end of a thread and B the end of a thread respectively, respectively from a the end of a thread and b line
Head outflow common mode choke.
8. a kind of common mode choke for eliminating electrostatic interference as described in claim 1, it is characterised in that: first winding
(21) the number of turns is m1, and the number of turns of the second winding (22) is m2, and the number of turns of the tertiary winding (23) is m3, wherein m1 is 2 or more
Arbitrary integer, the arbitrary integer that m2 is 2 or more, the arbitrary integer that m3 is 2 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920410412.0U CN209591710U (en) | 2019-03-28 | 2019-03-28 | A kind of common mode choke for eliminating electrostatic interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920410412.0U CN209591710U (en) | 2019-03-28 | 2019-03-28 | A kind of common mode choke for eliminating electrostatic interference |
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| Publication Number | Publication Date |
|---|---|
| CN209591710U true CN209591710U (en) | 2019-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920410412.0U Active CN209591710U (en) | 2019-03-28 | 2019-03-28 | A kind of common mode choke for eliminating electrostatic interference |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109920620A (en) * | 2019-03-28 | 2019-06-21 | 罗山县三通达电子科技有限公司 | A kind of common mode choke for eliminating electrostatic interference |
-
2019
- 2019-03-28 CN CN201920410412.0U patent/CN209591710U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109920620A (en) * | 2019-03-28 | 2019-06-21 | 罗山县三通达电子科技有限公司 | A kind of common mode choke for eliminating electrostatic interference |
| CN109920620B (en) * | 2019-03-28 | 2024-03-29 | 罗山县三通达电子科技有限公司 | Common mode choke coil for eliminating electrostatic interference |
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