CN110197743A - Power supply line and preparation method with electromagnetic wave absorption functions - Google Patents
Power supply line and preparation method with electromagnetic wave absorption functions Download PDFInfo
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- CN110197743A CN110197743A CN201910202979.3A CN201910202979A CN110197743A CN 110197743 A CN110197743 A CN 110197743A CN 201910202979 A CN201910202979 A CN 201910202979A CN 110197743 A CN110197743 A CN 110197743A
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- power supply
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- supply line
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000000696 magnetic material Substances 0.000 claims abstract description 56
- 239000000463 material Substances 0.000 claims abstract description 55
- 229920002521 macromolecule Polymers 0.000 claims abstract description 24
- 238000005253 cladding Methods 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 229910000859 α-Fe Inorganic materials 0.000 claims description 12
- 230000005389 magnetism Effects 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 4
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- 230000005764 inhibitory process Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 description 17
- 230000006698 induction Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 230000006872 improvement Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000002401 inhibitory effect Effects 0.000 description 5
- 239000011324 bead Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/10—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances metallic oxides
-
- 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
- H01B7/0258—Disposition of insulation comprising one or more longitudinal lapped layers 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Soft Magnetic Materials (AREA)
- Insulated Conductors (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a kind of power supply line and preparation method with electromagnetic wave absorption functions, multiple conducting wires are set in sheath, each wire outer cladding line skin, the line skin uses macromolecule magnetic material, and the macromolecule magnetic material is the composite material being mixed by high molecular material and magnetic material.Compared with prior art, the present invention prepares electric wire by macromolecule magnetic material coated wire, so that power supply line, which does not need installation magnet ring, can play the function of inhibition and electromagnetic wave absorption.
Description
Technical field
The invention belongs to the technical fields of circuit lines, are related to the cable and system of a kind of inhibition and absorption noise electromagnetic wave
Make method, more particularly to the technology method that the noise electromagnetic wave among cable is inhibited and absorbed by manufacture.
Background technique
In electric wire preparation field, in the arranged standard of this field, electric wire is prepared using high molecular material.It is as a result,
Meet electromagnetic compatibility national standard, needs to increase single or multiple magnet rings in wire end when equipment is grid-connected.For example, with
The energy-saving development trend of the household electrical appliances such as air-conditioning and television set, this kind of products use converter technique (such as: convertible frequency air-conditioner,
Variable-frequency washing machine, frequency conversion refrigerator etc.), the technical issues of using electromagnetic compatibility is brought after converter technique, i.e. this kind of production
Product power supply line links product and when public power system, the noise electromagnetic wave that the circuit of product generates can by with common link
Cable travels to the safe operation among public power system and influencing public power system, the noise electricity of public power system
Magnetic wave can also travel to the safe operation that these products are influenced on this kind of products by cable.It is asked to solve this
Topic, present technology is that single or multiple magnet rings are installed on cable, installs two kinds of magnet rings under normal circumstances, one is height
The amorphous state magnet ring of magnetic conductivity (magnetic permeability is all 40,000 or more under normal circumstances) (passes through the induction reactance pair when magnet ring using electromagnetic wave
Low frequency noise electromagnetic wave plays inhibiting effect)；One is ferrite beads to play absorption to high frequency noise electromagnetic wave, to reach
The purpose of the electromagnetic compatibility of this kind of products.
Present technology is usually power supply line to be passed through magnet ring, or in order to increase assimilation effect, power supply line housing is removed,
The electric wire of the inside, if technical requirements are still not achieved, also will increase magnet ring quantity until reaching skill around several circles on magnet ring
Art requirement.Therefore, there are following technological deficiencies for the power supply line of the prior art: 1, due to being mounted with magnet ring on power supply line, making power supply
Line has the protrusion of magnet ring；2, magnet ring needs to be fixed with plastic strip；3, manufacturing process is complicated, needs to install on the power line, wind
With the techniques such as fixed magnet ring；4, since the magnetic core of amorphous state magnet ring is amorphous material manufacture, meeting when by external collision
Lose magnetism can and do not have due function；5, in addition, the crust (including sheath) of this power supply line is that organic material is constituted
, without function of shielding, the electromagnetic waves of the various frequencies in space can be passed by the metal line absorption of power supply line and among power supply line
It broadcasts to form noise electromagnetic wave.
Therefore in view of the drawbacks of the prior art, it is really necessary to propose a kind of technical solution to solve skill of the existing technology
Art problem.
Summary of the invention
In view of this, it is necessory to provide a kind of power supply line and preparation method with electromagnetic wave absorption functions, thus
The technical requirements of electromagnetic compatibility can be reached without installing magnet ring when equipment is grid-connected.
In order to solve technical problem of the existing technology, technical scheme is as follows:
Power supply line with electromagnetic wave absorption functions is that multiple conducting wires are arranged in sheath, and each wire is by one or more
Root enameled wire forms outer cladding line skin, and the line skin uses macromolecule magnetic material, and the macromolecule magnetic material is by high score
The composite material that sub- material and magnetic material are mixed.
Scheme as a further improvement, in the macromolecule magnetic material, magnetic material weight percent hundred 70% with
On.
Scheme as a further improvement, the magnetic material are Ferrite Material.
Scheme as a further improvement, the conducting wire are formed using one or more enameled wires.
Scheme as a further improvement, the line skin with a thickness of 0.05mm to 5mm.
In order to solve technical problem of the existing technology, invention additionally discloses a kind of electricity with electromagnetic wave absorption functions
The preparation method of source line, comprising the following steps:
Step S1: high molecular material is uniformly mixed according to a certain percentage with magnetic material and is prepared into High Polymer Magnetic material
Material；
Step S2: according to the manufacturing process of electric wire in conducting wire outer cladding macromolecule magnetic material as line skin to complete conducting wire
Manufacture；
Step S3: multiple conducting wires are combined and coat sheath to prepare the power supply with electromagnetic wave absorption functions
Line.
Scheme as a further improvement, in the step S1, magnetic material are that the material after completing crystallization passes through powder
It is broken and obtain.
Scheme as a further improvement, the conducting wire is composed using one or more enameled wires, using high score
Sub- magnetic material is wrapped up.
Scheme as a further improvement, magnetic material weight percent hundred is 70% or more.
Compared with prior art, the present invention coats the preparation of one or more enameled wires by macromolecule magnetic material and leads
Line, to effectively solve the following technological deficiency of current power supply line: 1, power supply line of the present invention do not need installation magnet ring can be right
The noise electromagnetic wave propagated among conducting wire plays the function of inhibition and absorption；2, the magnet ring on fixed power source line is not needed；3,
Manufacturing process is simple, eliminates and installs, winds and fix the techniques such as magnet ring on the power line；4, due to the magnetic core of amorphous state magnet ring
That amorphous material manufactures, can lose magnetism when by external collision can and do not have due function, it is non-because not installing
Crystalline state magnet ring also eliminates the need for the factor of this respect；5, since the crust of this power supply line uses macromolecule magnetic material, institute
To be capable of influence of the electromagnetic wave to power supply line of the various frequencies in partly shielding effect space；6, the prior art is needed using two kinds of magnetism
Material (Ferrite Material and amorphous material) inhibits respectively and absorbs the electromagnetic wave of different frequency, and the present invention only uses a kind of magnetism
Material (Ferrite Material).
Detailed description of the invention
Fig. 1 is the section structure chart that the present invention inhales wave power supply line.
Fig. 2 is the flow diagram that the present invention inhales wave power supply line preparation method.
Following specific embodiment will further illustrate the present invention in conjunction with above-mentioned attached drawing.
Specific embodiment
Technical solution provided by the invention is described further below with reference to attached drawing.
In the prior art, due to caused by the characteristic of magnetic material, the magnetic permeability of ferrite bead on the power line is installed
Usually several hundred (such as: nickel-zinc ferrite magnet ring magnetic permeability is between 300-800), this magnet ring installation is led on the power line
If the imaginary part of the magnetic permeability using material, to the electro-magnetic wave absorption of 1MHz frequencies above, another magnet ring is usually
(also had referred to as: nanocrystalline and ultracrystallite etc., but application principle is all) using the relatively high amorphous state of magnetic permeability, this magnet ring
Magnetic permeability commonly reach 40000 or more, be using magnet ring generate induction reactance inhibiting effect is played to electromagnetic wave.
In existing electric wire preparation field, in the arranged standard of this field, electric wire is prepared using high molecular material.Shen
It asks someone on the basis of theoretical research and analysis of experiments, it is creative that magnetic material is added in original wire sheath material prescription
Material, can effectively improve the anti-electromagnetic performance of electric wire.For this purpose, the present invention proposes a kind of power supply line with electromagnetic wave absorption functions,
It is shown in Figure 1, multiple conducting wires are set in sheath, one or more enameled wires of each wire form outer cladding line skin, institute
Line skin is stated using macromolecule magnetic material, the macromolecule magnetic material is mixed by high molecular material and magnetic material
Composite material.
By adopting the above technical scheme, it is made of due to the material of wire sheath high molecular material and magnetic material, benefit
The noise electro-magnetic wave absorption by electric wire is then converted into the microwave absorbing property of magnetic material and is dissipated for heat, and is utilized
The induction reactance that magnetic material closed circuit generates plays inhibiting effect to noise electromagnetic wave, so that reaching prevents public power system
The purpose of the electromagnetic wave influence public power system operation operation of noise electromagnetic wave influence circuit and that circuit system generates.
Applicant indicate that although the prior art has existed the material of electromagnetic wave absorption, in present applications ' the tail must be taken, usually
Based on the overall structures such as sheet, strip, generally there is more application in military industry field, for example radar, antenna and various communications are set
It is standby, the performance of radar or communication equipment is improved using the magnetic shield property of electromagnetic wave absorption material.Currently, in electric wire field
It yet there are no related application.To find out its cause, it is applicant's understanding that the firstly, existing professional standard in this field and conventional well-known will adopt
High molecular material is used to prepare electric wire as common sense；Secondly, existing electromagnetic wave absorption material is generally recognized with overall structure application
Applying in this hollow structure of electric wire for electromagnetic wave absorption material will be unable to have effect；In addition, generally in power supply line application
Using the amorphous state magnet ring for playing inhibiting effect to low frequency noise electromagnetic wave, (high magnetic permeability, magnetic permeability is all under normal circumstances in field
40,000 or more) material, just lose due characteristic after the pulverizing, and have as the amorphous material of alloy material
It has conductivity, so when being applied to the skin material of conducting wire, that is, dangerous it can not also play anti-electromagnetic compatibility effect.
Simultaneously it is applicant's understanding that common sense in the art is defaulted, the induction reactance of various devices and the device of electromagnetic wave absorption are
Separated or device have the function of induction reactance or with absorption function (such as: with filter function inductance etc., have inhale
Receive the magnetic material coating etc. of electromagnetism wave energy).Therefore, present power supply line is to different frequency ranges using different materials
The technical issues of magnet ring solves electromagnetic compatibility is made in material.
On the basis of above-mentioned technical background, the present invention looks for another way, and preparing electric wire using macromolecule magnetic material makes it
It covers required frequency range and is provided with function of shielding.For this purpose, applicant has found on the basis of theory analysis:
1, on the power line, the induction reactance of generation follows formula to the installation of amorphous state magnet ring:
XL=2 π fL=ω L
This formula explanation, the size of induction reactance is directly proportional to frequency, and as power supply line, the frequency (China) of electric power is
50Hz, so the induction reactance very little generated, and as the increase induction reactance of frequency also increases with it, just to being attached to what power supply line was propagated
Noise electromagnetic wave plays inhibiting effect；But the magnetic permeability with the increase amorphous material of frequency can decline, certain when reaching
When frequency, magnetic permeability 0, so why this namely installs another ferrite on the power line just without induction reactance
The reason of magnet ring, this Frequency point is in 1MHz or so, for 1MHz or more noise electromagnetic wave, using ferrite bead to 1MHz with
The electro-magnetic wave absorption of upper frequency acts on, and noise electromagnetic wave is converted into heat and is dissipated, to reach the purpose of electromagnetic compatibility.
2, the relationship of the magnetic permeability of the induction reactance and material of magnet ring:
All be the magnet ring of simple geometric shape due to installing magnet ring on the power line, for its inductance of annular magnet ring with
The relationship of magnetic permeability is as follows:
μ i=L* (D+d)/2 (D-d) * H*n*n, it may be assumed that L=μ i*2 (D-d) * H*n*n/ (D+d)
In formula: n is the number of turns, since power supply line passes through magnet ring, so n=1 here；
μ i is the magnetic permeability of material；
L is the inductance of production；
D is the outer diameter of magnet ring；
D is the internal diameter of magnet ring；
H is the length of power supply line.
Although current technology using amorphous state magnet ring inhibit 1MHz frequency electromagnetic wave below, its length 1cm with
Under, although and using its magnetic permeability of macromolecule magnetic material 100 hereinafter, its length (i.e. H value) is that amorphous state magnet ring is several hundred
Times, and the internal diameter of magnet ring is very big, and the electric wire of macromolecule magnetic material manufacture is used, internal diameter is one or more enamel-covers
The outer circle of line composition, from above-mentioned formula it is recognised which increase inductance values.
3, when mixing to form composite material according to magnetic circuit principle, magnetic material and high molecular material, magnetic permeability
Little with the magnetic permeability relationship of the magnetic material of addition, the ratio correlation added with it is big, so among manufacture when power supply line,
Ferrite Material is only added among high molecular material.
In a preferred embodiment, in macromolecule magnetic material, magnetic material is Ferrite Material, magnetic material
Weight percent hundred is 70% or more.To keep high molecular material characteristic, while magnetic permeability can be improved as far as possible again.
In addition, in order to simplify technique, conducting wire uses one or more enameled wires, is then coated outside by Polymer Magnetic
Property material preparation line skin.In general, line skin with a thickness of 0.05mm to 5mm.
In a preferred embodiment, sheath uses flexible material, and closely coats the conducting wire being placed in one.Thus
The defect of macromolecule magnetic material is made up on the whole.
Referring to fig. 2, it show the manufacturing method of electromagnetic wave absorption power supply line of the present invention, comprising the following steps:
Step S1: high molecular material is uniformly mixed according to a certain percentage with magnetic material and is prepared into High Polymer Magnetic material
Material；
Step S2: according to the manufacturing process of electric wire in one or more enameled wire outer cladding macromolecule magnetic material conducts
Line skin is to complete the manufacture of conducting wire；
Step S3: multiple conducting wires, which are combined, and coat sheath inhales wave power supply line to prepare.
As preferred embodiment, in the step S1, magnetic material is that the material after completing crystallization passes through crushing
And it obtains.
As preferred embodiment, the conducting wire is composed using one or more enameled wires, using macromolecule
Magnetic material is wrapped up.
As preferred embodiment, magnetic material weight percent hundred is 70% or more.
The present invention by adopting the above technical scheme, can solve the following technological deficiency of current power supply line: 1, this power supply line
Not install magnet ring can play the function of inhibition and electromagnetic wave absorption；2, the magnet ring on fixed power source line is not needed；3, it makes
Make simple process；4, since the magnetic core of amorphous state magnet ring is amorphous material manufacture, magnetic can be lost when by external collision
Performance and do not have due function, the factor of this respect is also eliminated the need for because not installing amorphous state magnet ring；5, due to this electricity
The crust of source line uses macromolecule magnetic material, so capableing of the electromagnetic wave of the various frequencies in partly shielding effect space to power supply line
Influence；6, current technology inhibits respectively and absorbs different frequencies using two kinds of magnetic materials (Ferrite Material and amorphous material)
The electromagnetic wave of rate, now only with a kind of magnetic material (Ferrite Material).
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. the power supply line with electromagnetic wave absorption functions, which is characterized in that multiple conducting wires, each wire outside are arranged in sheath
Covering thread skin, the line skin use macromolecule magnetic material, and the macromolecule magnetic material is by high molecular material and magnetic material
Expect the composite material being mixed.
2. the power supply line according to claim 1 with electromagnetic wave absorption functions, which is characterized in that the High Polymer Magnetic
In material, magnetic material weight percent hundred is 70% or more.
3. the power supply line according to claim 1 or 2 with electromagnetic wave absorption functions, which is characterized in that the magnetism material
Material is Ferrite Material.
4. the power supply line according to claim 1 or 2 with electromagnetic wave absorption functions, which is characterized in that the conducting wire is adopted
It is formed with one or more enameled wires.
5. the power supply line according to claim 1 or 2 with electromagnetic wave absorption functions, which is characterized in that the line skin
With a thickness of 0.05mm to 5mm.
6. the manufacturing method of the power supply line with electromagnetic wave absorption functions, which comprises the following steps:
Step S1: high molecular material is uniformly mixed according to a certain percentage with magnetic material and is prepared into macromolecule magnetic material；
Step S2: the system of electric wire is completed as line skin in conducting wire outer cladding macromolecule magnetic material according to the manufacturing process of electric wire
It makes；
Step S3: more electric wires are combined and coat sheath to be prepared into the power supply line with electromagnetic wave absorption functions.
7. the manufacturing method of the power supply line according to claim 6 with electromagnetic wave absorption functions, which is characterized in that in institute
It states in step S1, magnetic material is that the material after completing crystallization is obtained by crushing.
8. the manufacturing method of the power supply line according to claim 6 or 7 with electromagnetic wave absorption functions, which is characterized in that
The conducting wire is composed using one or more enameled wires, is wrapped up using macromolecule magnetic material.
9. the manufacturing method of the power supply line according to claim 6 or 7 with electromagnetic wave absorption functions, which is characterized in that
Magnetic material weight percent hundred is 70% or more.
10. the manufacturing method of the power supply line according to claim 6 or 7 with electromagnetic wave absorption functions, which is characterized in that
Magnetic material weight percent hundred is 70% or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910202979.3A CN110197743A (en) | 2019-03-18 | 2019-03-18 | Power supply line and preparation method with electromagnetic wave absorption functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910202979.3A CN110197743A (en) | 2019-03-18 | 2019-03-18 | Power supply line and preparation method with electromagnetic wave absorption functions |
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| Publication Number | Publication Date |
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| CN110197743A true CN110197743A (en) | 2019-09-03 |
Family
ID=67751765
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| CN201910202979.3A Pending CN110197743A (en) | 2019-03-18 | 2019-03-18 | Power supply line and preparation method with electromagnetic wave absorption functions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111462943A (en) * | 2020-05-19 | 2020-07-28 | 杭州存宝科技有限公司 | Wireless charging coil enameled wire with magnetic nano ferrite material inner layer and preparation method thereof |
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| CN2100684U (en) * | 1991-08-06 | 1992-04-01 | 江钦池 | Parallel wires with the performance of absorbing electromagnetic wave |
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| 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 |
| CN206921526U (en) * | 2017-02-27 | 2018-01-23 | 江苏港缆新材料科技有限公司 | A kind of automobile-used antimagnetic interference shielding alloy wire |
| CN108461190A (en) * | 2018-02-07 | 2018-08-28 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | A kind of filtering electric wire of resistance to complex electromagnetic environment |
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2019
- 2019-03-18 CN CN201910202979.3A patent/CN110197743A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2100684U (en) * | 1991-08-06 | 1992-04-01 | 江钦池 | Parallel wires with the performance of absorbing electromagnetic wave |
| CN1812215A (en) * | 2005-01-25 | 2006-08-02 | 上海翥星电子科技发展有限公司 | Organic material shielded line bunch pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111462943A (en) * | 2020-05-19 | 2020-07-28 | 杭州存宝科技有限公司 | Wireless charging coil enameled wire with magnetic nano ferrite material inner layer and preparation method thereof |
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