CN106683760A - Insulated wire coated with magnetic rubber in insulated manner - Google Patents
Insulated wire coated with magnetic rubber in insulated manner Download PDFInfo
- Publication number
- CN106683760A CN106683760A CN201710082768.1A CN201710082768A CN106683760A CN 106683760 A CN106683760 A CN 106683760A CN 201710082768 A CN201710082768 A CN 201710082768A CN 106683760 A CN106683760 A CN 106683760A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- electric conductor
- insulated electric
- mnzn
- nizn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- 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
- H01F27/2823—Wires
Abstract
The invention discloses an insulated wire coated with magnetic rubber in an insulated manner. The insulated wire comprises a conductor and an insulating layer coating the outside of the conductor, wherein the insulating layer is an electromagnetic shielding layer, which is used for generating an electric shielding cavity and absorbing electromagnetic energy, with a magnetic material. The electromagnetic shielding layer with the magnetic material for generating the electric shielding cavity and absorbing the electromagnetic energy coats the outside of the conductor, so that the whole structure is simple, and meanwhile, a good electromagnetic shielding effect can be achieved without shielding grounding treatment.
Description
Technical field
The present invention relates to field of cables, and in particular to a kind of insulated electric conductor of magnetic glue insulating wrapped.
Background technology
One layer of non electrically conductive material uniformly and is hermetically wrapped up in wire periphery, such as：Resin, plastics, silicon rubber, PVC etc.,
Insulating barrier is formed, prevents electric conductor from the electric wire for causing the accidents such as electric leakage, short circuit, electric shock to occur is contacted with the external world insulated conductor.
And enamel-covered wire is a principal item of winding wire, it is made up of conductor and insulating barrier two, after the annealed softening of bare wire, then is passed through
Repeatedly japanning, baking is formed.Shielding line is exactly layer of metal protective layer (generally netted) in the outer bread of wire, by metal level
The interference of transmission signal in bound pair wire outside electric shield chamber can be effectively formed after the ground connection of one end.Shielding line effect is exactly to eliminate
The extraneous noise jamming to inside.(harm of electromagnetism differential mode noise and common-mode noise to electric equipment, can not only cause equipment work
Make abnormal, and the service life of device interior component can be reduced.Noise enters after power network can be influenceed and to endanger other normal
The equipment of work.So must carry out effectively carrying out being reduced to its influence of elimination and endangering by concerned countries standard.)
Because shield is to from the outside interference electromagnetic wave such as wire, cable, component, circuit or system and inside electricity
Magnetic wave plays energy absorption (eddy-current loss), reflected energy (interface reflection of the electromagnetic wave on shield) and offsets energy
The effect of (electromagnetic induction produces reverse electromagnetic field on the shielding layer, can offset part interference electromagnetic wave), so shield has
Weaken the function of interference.
(1) when the frequency of interference electromagnetic field is higher, using the vortex produced in the metal material of low-resistivity, it is right to be formed
The negative function of external electromagnetic wave, so as to reach the effect of shielding.
(2) when the frequency of interference electromagnetic wave is relatively low, be using the material of high permeability, so that the magnetic line of force is limited in screen
Internal portion is covered, prevents the space for being diffused into shielding from going.
(3) in some cases, if require that all there is good shield effectiveness to high and low frequency electromagnetic field, often
Multilayer screen body is constituted using different metal materials.
There is a kind of error understanding to be for electromagnetic shielding：As long as making a chest with metal, then chest is grounded, with regard to energy
Enough play a part of electromagnetic shielding.Whether electromagnetic shielding is grounded not relation with shield in fact.
Electromagnetic shielding can't simply be accomplished in prior art basis in sum, therefore need to carry out this technology
Further improve.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, there is provided simple structure, effectiveness is good
The insulated electric conductor of magnetic glue insulating wrapped.
To reach above-mentioned purpose, a kind of insulated electric conductor of magnetic glue insulating wrapped, including conductor and being coated on exhausted outside conductor
Edge layer, the insulating barrier is the electro-magnetic screen layer with magnetic material of absorption of electromagnetic energy for producing electric shield cavity,
The magnetic material is alloy powder and/or ferrite powder with soft magnetic characteristic.
Preferably, the alloy powder is NiZn or MnZn.
Preferably, the ferrite powder is FeSiAl, FeSi or FeNi.
Preferably, when being individually added into any one of NiZn, MnZn, FeSiAl, FeSi and FeNi magnetic powder, its
The ratio of addition is 5%-45%.
Preferably, be individually added into NiZn, MnZn, FeSiAl, FeSi and FeNi magnetic powder it is any when, its
The ratio of addition is 30%.
Preferably, the magnetic material of addition is NiZn, MnZn and alloy powder.
Preferably, the ratio of described NiZn, MnZn of addition and alloy powder is 10-25%：5-15%：5-15%.
Preferably, the ratio of described NiZn, MnZn of addition and alloy powder is 20%：10%：5%.
A kind of integrated inductor wave filter, including filtering body, the coiling cable in the filtering body is using above-mentioned
The insulated electric conductor of the magnetic glue insulating wrapped described in any one.
A kind of inductor, including inductor body, the coiling cable in the inductor body use any of the above-described institute
The insulated electric conductor of the magnetic glue insulating wrapped stated.
Beneficial effects of the present invention：The present invention absorbs electromagnetism using in one layer of generation electric shield cavity of conductor outer cladding
The electro-magnetic screen layer with magnetic material of energy, overall structure is simple, can just accomplish without the need for bonding treatment
Good effectiveness.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram of the insulated electric conductor of magnetic glue insulating wrapped of the invention.
Fig. 2 is a kind of overall structure diagram of wave filter of the invention.
Fig. 3 be existing wave filter and a kind of wave filter of the invention work magnetic it is close by comparison diagram.
Fig. 4 is prior art filter performance map (N, 15A) (N represents zero line, and L represents live wire)
Fig. 5 is a kind of performance map (N, 15A) of wave filter of the invention.
Fig. 6 is prior art filter performance map (L, 15A).
Fig. 7 is a kind of performance map (L, 15A) of wave filter of the invention.
Fig. 8 is prior art filter performance map (N, 0A).
Fig. 9 is a kind of performance map (N, 0A) of wave filter of the invention.
Figure 10 is prior art filter performance map (L, 0A).
Figure 11 is a kind of performance map (L, 0A) of wave filter of the invention.
Figure 12 is a kind of top view of inductor of the invention.
Figure 13 is a kind of side view of inductor of the invention.
Specific embodiment
Specific embodiment of the invention is described further below in conjunction with the accompanying drawings.
Embodiment one
As shown in figure 1, a kind of insulated electric conductor 3 of magnetic glue insulating wrapped, including conductor 1 and the insulating barrier being coated on outside conductor
2, the insulating barrier 2 is for producing electric shield cavity, the electro-magnetic screen layer with magnetic material of absorption of electromagnetic energy.Institute
It is alloy powder and/or ferrite powder with soft magnetic characteristic to state magnetic material.Specifically, the alloy powder be NiZn or
MnZn；The ferrite powder is FeSiAl, FeSi or FeNi etc..
When being individually added into NiZn, MnZn, FeSiAl, FeSi or FeNi magnetic powder any one when, the magnetic of addition
Powder ratio is 5%-45%, and optimal value 30% is selected in the present embodiment.
It is described when the mixture that the material for adding mixes for NiZn, MnZn and alloy powder：NiZn, MnZn and alloy
The mass percent that powder is added is respectively：10-25%, 5-15% and 5-15%, NiZn, MnZn and alloyed powder in the present embodiment
The mass percent that end adds is respectively 20%, 10% and 5%.
Influence shield shield effectiveness has two factors：One is that whole shield surface must be conductive continuous；Separately
One is can not have the conductor for being directed through shield.
There are many conduction discontinuity poinies on shield, a topmost class is that shield different piece junction is formed not
Conductive slot.These nonconducting gaps just generate electromagnetic leakage, as fluid can be from container gap on leak.
A method for solving this leakage is the filling conductive elastomer at gap, eliminates non-conductive point.This in fluid just as holding
The reason of filled rubber is the same at the gap of device.This elastic conduction packing material is exactly electromagnetic sealing pad.
Electromagnetic shield is likened into liquid sealing container in many documents, it thinks to be stitched when with conductive elastomer
Gap is sealed to watertight degree and can prevent electromagnetic-wave leakage, and actually this is inapt.
Whether gap or hole can leakage electromagnetic waves, the size depending on gap or hole relative to electromagnetic wavelength.When
When wavelength is much larger than opening size, obvious leakage can't be produced.Therefore, when interference frequency it is higher when, at this moment wavelength compared with
It is short, it is necessary to be padded using electromagnetic sealing.Specifically, when the frequency of interference is more than 10MHz it is necessary to consider to use electromagnetic sealing
Pad.Every flexible and well conducting material can be used as electromagnetic sealing pad.
The present invention is namely based on the improvement made on the basis of principles above analysis, using in the one layer of generation of conductor outer cladding
Electric shield cavity, the electro-magnetic screen layer with magnetic material of absorption of electromagnetic energy, overall structure is simple, without the need for screen
Covering grounding can just accomplish good effectiveness.
As shown in figs. 2-11, a kind of integrated inductor wave filter, including filtering body 4, in the filtering body 4 around
Line cable uses the insulated electric conductor of magnetic glue insulating wrapped described above.
In existing product, the requirement to wave filter high efficiency/high power density module is improved constantly, actual survey, G2
Wave filter volume 25%-30% nearly of the total volume, is not suitable for high power density.In this 25%-30%, common mode inductance and
X electric capacity account for significant portion, therefore, pursue the high power density of module, it is necessary to reduce common mode inductance and X electric capacity takes volume.
In addition, differential mode inductance component and common mode inductance component keep high value, and it is also extremely difficult, also some are using difference common mode collection
Into, interaction is not produced to two components, volume can be caused to increase, if two components produce interaction, in high temperature or big work(
Degradation can be caused under rate.
The principle of common mode inductance is as follows：
Because the Hl (magnetic pressure drop) and the difference of NI (magnetomotive force) during whole magnetic circuit can not possibly be entirely 0, necessarily lead to
Leakage magnetic flux, forms the common mode inductance that differential-mode component is present.
The insulated electric conductor of magnetic glue insulating wrapped of the present invention is employed instead of after enamel-covered wire, differential-mode component is increased by original 15uH
To about 20uH, carrying out, disturbed test result is as follows：
By analysis, 225kHz noises are mainly main transformer space radiation to input, by shielding input filter
Can just solve, 200kHz is that PFC differential mode noises source is produced, it is necessary to filters filter.Be can be seen that from conduction test result
Allowance at 200kHz is than larger, and module is very big in differential-mode portion room for improvement, can reduce wave filter the inside common mode inductance or
The numerical value of person's X electric capacity, the effect of volume is reduced so as to reach.
Simultaneously from test result, differential mode noise suppresses to compare clean at 200kHz.Than the original electricity that enamel-covered wire makes
Sense improves more than 10dB.
Embodiment two：
The present embodiment is with the difference of embodiment one：
When being individually added into NiZn, MnZn, FeSiAl, FeSi or FeNi magnetic powder any one when, the magnetic of addition
The ratio of powder is 5%.
It is described when the mixture that the material for adding mixes for NiZn, MnZn and alloy powder：NiZn, MnZn and alloy
The mass percent that powder is added is respectively：10%th, 5% and 5%.
Embodiment three：
The present embodiment is with the difference of embodiment one：
When being individually added into NiZn, MnZn, FeSiAl, FeSi or FeNi magnetic powder any one when, the magnetic of addition
The ratio of powder is 20%.
It is described when the mixture that the material for adding mixes for NiZn, MnZn and alloy powder：NiZn, MnZn and alloy
The mass percent that powder is added is respectively：15%th, 10% and 10%.
Example IV：
The present embodiment is with the difference of embodiment one：
When being individually added into NiZn, MnZn, FeSiAl, FeSi or FeNi magnetic powder any one when, the magnetic of addition
The ratio of powder is 35%.
It is described when the mixture that the material for adding mixes for NiZn, MnZn and alloy powder：NiZn, MnZn and alloy
The mass percent that powder is added is respectively：25%th, 10% and 15%.
Embodiment five：
The present embodiment is with the difference of embodiment one：
When being individually added into NiZn, MnZn, FeSiAl, FeSi or FeNi magnetic powder any one when, the magnetic of addition
The ratio of powder is 45%.
It is described when the mixture that the material for adding mixes for NiZn, MnZn and alloy powder：NiZn, MnZn and alloy
The mass percent that powder is added is respectively：25%th, 15% and 15%.
As illustrated by figs. 12-13, a kind of inductor, including inductor body 5, the coiling cable in the inductor body 5
Using the insulated electric conductor 3 of the magnetic glue insulating wrapped described in any of the above-described.
Employing the inductor of the insulated electric conductor of magnetic glue insulating wrapped, the self-inductance of its hollow coil increases by 10%~
20%；This is, because electro-magnetic screen layer is individually formed magnetic circuit outside wire, the magnetic flux density of electromagnetism effectively to be drawn in, not only effectively
Itself electromagnetic interference to external world is reduced to, and electromagnetic noise interference effectively carries out vortex absorption to external world, greatly reduces
The influence of outer bound pair equipment.
When other magnetic cores replace air core coil, the electro-magnetic screen layer outside magnetic core combination wire forms magnetic circuit, completes band magnetic
The external magnetic circuit of core partly, without using magnetic glue inductance and inductance element with radome class.
Likewise, insulated electric conductor of the present invention with electro-magnetic screen layer can also apply the various electronics such as transformer, motor
Equipment, while during the equipment that other all trades and professions need cable can also be promoted the use of.
The present invention is using in one layer of generation electric shield cavity of conductor outer cladding, the band magnetic material of absorption of electromagnetic energy
Electro-magnetic screen layer, overall structure is simple, and good effectiveness can be just accomplished without the need for bonding treatment.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and changed.Therefore, the invention is not limited in specific embodiment disclosed and described above, to the one of invention
A little modifications and changes should also be as falling into scope of the claims of the invention.Although additionally, being used in this specification
Some specific terms, but these terms are merely for convenience of description, do not constitute any limitation to the present invention.
Claims (10)
1. a kind of insulated electric conductor of magnetic glue insulating wrapped, including conductor and the insulating barrier being coated on outside conductor, it is characterised in that institute
It is for producing electric shield cavity, the electro-magnetic screen layer with magnetic material of absorption of electromagnetic energy, the magnetic to state insulating barrier
Property material is alloy powder and/or ferrite powder with soft magnetic characteristic.
2. a kind of insulated electric conductor of magnetic glue insulating wrapped as claimed in claim 1, it is characterised in that the alloy powder is
NiZn or MnZn.
3. a kind of insulated electric conductor of magnetic glue insulating wrapped as claimed in claim 1, it is characterised in that the ferrite powder is
FeSiAl, FeSi or FeNi.
4. the insulated electric conductor of a kind of magnetic glue insulating wrapped as described in claim 2,3, it is characterised in that be individually added into described
NiZn, MnZn, FeSiAl, FeSi and FeNi magnetic powder any one when, its add ratio be 5%-45%.
5. a kind of insulated electric conductor of magnetic glue insulating wrapped as claimed in claim 4, it is characterised in that be individually added into described
NiZn, MnZn, FeSiAl, FeSi and FeNi magnetic powder any one when, its add ratio be 30%.
6. a kind of insulated electric conductor of magnetic glue insulating wrapped as claimed in claim 1, it is characterised in that the magnetic material of addition
Expect the mixture for NiZn, MnZn and alloy powder.
7. a kind of insulated electric conductor of magnetic glue insulating wrapped as claimed in claim 6, it is characterised in that add described NiZn,
The ratio of MnZn and alloy powder is 10-25%, 5-15% and 5-15%.
8. a kind of insulated electric conductor of magnetic glue insulating wrapped as claimed in claim 6, it is characterised in that add described NiZn,
The ratio of MnZn and alloy powder is 20%, 10% and 5%.
9. a kind of integrated inductor wave filter, including filtering body, it is characterised in that the coiling cable in the filtering body
Using the insulated electric conductor of the magnetic glue insulating wrapped as described in claim any one of 1-7.
10. a kind of inductor, including inductor body, it is characterised in that the coiling cable in the inductor body is using such as
The insulated electric conductor of the magnetic glue insulating wrapped described in claim any one of 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710082768.1A CN106683760A (en) | 2017-02-16 | 2017-02-16 | Insulated wire coated with magnetic rubber in insulated manner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710082768.1A CN106683760A (en) | 2017-02-16 | 2017-02-16 | Insulated wire coated with magnetic rubber in insulated manner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106683760A true CN106683760A (en) | 2017-05-17 |
Family
ID=58861020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710082768.1A Pending CN106683760A (en) | 2017-02-16 | 2017-02-16 | Insulated wire coated with magnetic rubber in insulated manner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106683760A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202110880U (en) * | 2010-12-07 | 2012-01-11 | 刘晓东 | High-frequency conduction absorbing cable |
| CN102610370A (en) * | 2012-03-07 | 2012-07-25 | 天通控股股份有限公司 | Composite soft magnetic core for resisting electromagnetic interference |
| CN102856036A (en) * | 2011-06-30 | 2013-01-02 | 艾默生网络能源有限公司 | Difference and common mode integrated inductor, EMI (electromagnetic interference) filter and switch power source |
| CN102904127A (en) * | 2012-09-27 | 2013-01-30 | 珠海德百祺科技有限公司 | Connector with electro-magnetic interference (EMI) filtering function |
| CN105575543A (en) * | 2016-03-06 | 2016-05-11 | 北京工业大学 | Anti-magnetic-induction-coupling signal cable |
| CN105788746A (en) * | 2016-05-02 | 2016-07-20 | 北京工业大学 | Electromagnetic interference prevention mixing cable |
| CN206610637U (en) * | 2017-02-16 | 2017-11-03 | 广州市智昌电子科技有限公司 | The insulated electric conductor and integrated inductor wave filter and inductor of a kind of magnetic glue insulating wrapped |
-
2017
- 2017-02-16 CN CN201710082768.1A patent/CN106683760A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202110880U (en) * | 2010-12-07 | 2012-01-11 | 刘晓东 | High-frequency conduction absorbing cable |
| CN102856036A (en) * | 2011-06-30 | 2013-01-02 | 艾默生网络能源有限公司 | Difference and common mode integrated inductor, EMI (electromagnetic interference) filter and switch power source |
| CN102610370A (en) * | 2012-03-07 | 2012-07-25 | 天通控股股份有限公司 | Composite soft magnetic core for resisting electromagnetic interference |
| CN102904127A (en) * | 2012-09-27 | 2013-01-30 | 珠海德百祺科技有限公司 | Connector with electro-magnetic interference (EMI) filtering function |
| CN105575543A (en) * | 2016-03-06 | 2016-05-11 | 北京工业大学 | Anti-magnetic-induction-coupling signal cable |
| CN105788746A (en) * | 2016-05-02 | 2016-07-20 | 北京工业大学 | Electromagnetic interference prevention mixing cable |
| CN206610637U (en) * | 2017-02-16 | 2017-11-03 | 广州市智昌电子科技有限公司 | The insulated electric conductor and integrated inductor wave filter and inductor of a kind of magnetic glue insulating wrapped |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170517 |
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| RJ01 | Rejection of invention patent application after publication |