CN109243799A - A kind of preparation process for wireless charging magnetic sheet - Google Patents
A kind of preparation process for wireless charging magnetic sheet Download PDFInfo
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- CN109243799A CN109243799A CN201811215230.4A CN201811215230A CN109243799A CN 109243799 A CN109243799 A CN 109243799A CN 201811215230 A CN201811215230 A CN 201811215230A CN 109243799 A CN109243799 A CN 109243799A
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- magnetic sheet
- wireless charging
- magnetic
- preparation process
- processing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
Abstract
The invention discloses a kind of preparation processes for wireless charging magnetic sheet, by band to be processed and pass through winding, heat treatment, single-side coating, magnetic sheet fragmentation processing, and then single-side coating again is carried out to band, adhesive lamination, broken magnetic rolling and hot-pressing processing, it is finally required to be punched out processing according to size, the present invention is further added by broken magnetic rolling by designing magnetic conduction sheet after being layering, the technique of hot pressing, stablize fragment and air gap relative position and reduces fragment clearance margin contact area, contact resistance increases, reduce eddy-current loss, due to without making broken insulation between plates, fragment gap is very small, it is not only able to improve magnetic conductivity, reduce manufacturing process difficulty, and intermediate adhesive layer and surface adhesive layer are without being filled up completely fragment gap, adhesive thickness requires to reduce, entire magnetic flakes thickness is significantly reduced, compare useization The solution process for learning processing is more economical, succinct, but also has the advantages that high-efficient and low pollution emission.
Description
Technical field
The present invention relates to field of magnetic material, specially a kind of preparation process for wireless charging magnetic sheet.
Background technique
Wireless charging technology, also known as induction charging, contactless charging are derived from the generation of wireless power conveying technology
A kind of New-type charge technology.Wireless charging technology utilizes near-field sensing, and being transmitted its energy to by wireless charger needs charging equipment,
Under normal circumstances, the energy of capacitive transmission is very little, this is small with electrode area a very big relationship, therefore in order to meet to disappearing
Power level (such as from 5W to 25w) needed for taking equipment charge, needs to increase the voltage value of electrode size and coupling, specifically takes
Certainly in actual configuration.In order to realize the wireless receiving and dispatching between coupling electrode while minimize external amount of radiation, need into
Row correctly designs.It should be further understood that and determining correct electrode size, their design, operating voltage, performance number, most
Good working frequency and total size constraint, under normal circumstances, ideal frequency range in 200kHz between 1MHz, effectively
The voltage value of coupled zone charges in 800V to mobile phone wireless between 1.52kV.
For consumer electronics product, wireless charging has the advantages such as easy to operate, versatile.Wireless charging
Cardinal principle has two classes, first is that magnetic inductive, second is that magnetic resonance type, wherein magnetic inductive is the wireless charging side of current mainstream
Formula, the principle of magnetic inductive wireless charging contain similar to transformer there are two coil, transmitting end-coil by electric energy 110kHz~
The electromagnetic field emissions of 400kHz go out, and receive end-coil by electromagnetic induction method, receive the electromagnetic field of transmitting terminal, then will exchange
Electricity is transformed into direct current as secondary cell charging.Nearby usually there are the metal parts such as battery, electromagnetic induction wireless charging in receiving end
When, it will form vortex, in order to shield these interference, it usually needs stick a piece of magnetic conduction sheet at the back side of coil.
A kind of wireless charging magnetic conduction sheet preparation process provided by Chinese invention patent Publication No. CN107610923A,
Be related to field of magnetic material, the wireless charging with magnetic conduction sheet preparation process by being wound to metal soft magnetic alloy band, heat
Processing, single-side coating, graphical treatment, insulation processing, cover again glue, fitting, lamination, punching a series for the treatment of process obtain
More excellent performance of magnetic conduction sheet, by the way that magnetic conduction sheet and coil combination get up to carry out efficiency test, which passes through insulating
Processing can make the eddy-current loss of magnetic conduction sheet further decrease reduction, so that charge efficiency and resistivity level are improved, but should
Fragmentation piece is insulated by chemical method in kind preparation process, is easy to cause chemical medicinal liquid to pollute the environment in this way, and is coated with
Technique is also more complicated, and cost of implementation is higher.
Summary of the invention
The problem of for background technique, the present invention provides a kind of preparation processes for wireless charging magnetic sheet.
To achieve the above object, the invention provides the following technical scheme: a kind of preparation process for wireless charging magnetic sheet,
By band to be processed and by winding, heat treatment, single-side coating, magnetic sheet fragmentation processing, and then band is carried out again
Single-side coating, adhesive lamination, the rolling of broken magnetic and hot-pressing processing, finally require to be punched out processing according to size.
As a preferred technical solution of the present invention, the band include amorphous with it is nanocrystalline.
As a preferred technical solution of the present invention, single-side coating covers adhesive process using roll-to-roll, will have single side
The protective film of glue be attached to it is heat treated after strip surface, the pressing former material as next step.
As a preferred technical solution of the present invention, magnetic sheet fragmentation processing uses Mechanical Crushing, laser cutting or chemistry
Etch process.
As a preferred technical solution of the present invention, after magnetic sheet fragmentation processing, single-side coating processing is using print again
Brush coating process, by designing shape, the size of colloid, by the method for printing coating, in fragmentation treated strip surface
It carries out covering glue.
As a preferred technical solution of the present invention, adhesive lamination processing is that single-side coating again is broken after processed
Change band with glue fit to another band do not have glue while, so fitting is at the required number of plies.
As a preferred technical solution of the present invention, amorphous, nanocrystalline magnetic sheet fitting at the required number of plies after, then
Carry out whole broken magnetic hot pressing.
As a preferred technical solution of the present invention, satisfactory magnetic sheet will be punched and be bonded with coil, carried out
Performance test.
Compared with prior art, the beneficial effects of the present invention are: the present invention by design magnetic conduction sheet after being layering again
The technique for increasing broken magnetic rolling, hot pressing stablizes fragment and air gap relative position and reduces fragment clearance margin contact area, contact
Resistance increases, and reduces eddy-current loss, since without making broken insulation between plates, fragment gap is very small, is not only able to improve magnetic conductivity,
Manufacturing process difficulty is reduced, and intermediate adhesive layer and surface adhesive layer are without being filled up completely fragment gap, adhesive thickness requirement
It reducing, entire magnetic flakes thickness is significantly reduced, and it is relatively more economical, succinct with chemically treated solution process, but also have
The advantages of high-efficient and low pollution emission.
Detailed description of the invention
Fig. 1 provides a kind of preparation technology flow chart for wireless charging magnetic sheet for the present invention；
Fig. 2 is the roll-to-roll schematic device that fragmentation rolling and hot-pressing processing use in invention；
Fig. 3 is the band-like nanocrystalline lamination magnetic sheet schematic diagram invented be after adhesive lamination；
Fig. 4 is the schematic diagram of original process fragment, glue and air gap；
Fig. 5 is the schematic diagram of fragment, glue and air gap after adding fragmentation heat pressing process after common process is bonded；
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of preparation process for wireless charging magnetic sheet, which includes:
1, preparation and the winding portion of magnetic sheet are prepared: preparing required amorphous, nanocrystalline strip, prepares associated production and sets
It is standby, prepare adhesive gel (one side glue, double-sided adhesive, print tape), and nanocrystalline strip is wound to certain size as requested.
2, it is heat-treated: the nanocrystalline strip of winding being put and is heat-treated in the heat treatment furnace, specific treatment process side
The technical solution that method can refer to disclosed in Patent No. CN106916928A is implemented.
3, single-side coating is handled:, single-side coating covers adhesive process using roll-to-roll, and the protective film with one side glue is attached to
Strip surface after heat treated, the pressing former material as next step.
4, magnetic sheet fragmentation is handled: this uses Mechanical Crushing, laser cutting or chemical etching treatment process.
5, single-side coating is handled again: treated does not cover the strip surface of glue and covered glue again for fragmentation in 4, covers glue
Technique is printing coating method, by designing shape, the size of colloid, through the method for printing coating, after graphical treatment
Magnetic sheet surface carry out covering glue.
6, adhesive lamination is handled: fragmentation band of the single-side coating again after processed is fitted to another with glue on one side
Band does not have the one side of glue, and so fitting is at the required number of plies.
7, the rolling of broken magnetic and hot-pressing processing again: the band that lamination is completed carries out fragmentation again, and by hot pressing
The relative position of magnetic fragment and air gap is fixed reason.
8, punching is handled: magnetic conduction sheet described in 7 being required to be punched out according to size, obtains the magnetic conduction of desired size
Piece；
9, performance test is handled: will be punched satisfactory magnetic conduction sheet in 8 and is bonded with coil, carries out efficiency test.
In above-mentioned steps, wherein fragmentation rolling and hot-pressing processing are using roll-to-roll device as shown in Figure 2, the device packet
One group of fragmentation rolling wheel set 2,3 is included, two groups of silicon rubber heat rolling wheel set 4,5,6,7, wherein band-like nanocrystalline lamination magnetic sheet 1 is successively worn
Cross three groups of rolling wheel sets.
Wherein fragmentation rolling wheel set 2,3 is that the fragmentation rolling wheel set relatively rotated by upper and lower two is constituted, every group of silicon rubber heating
Rolling wheel set is all that the rolling wheel set relatively rotated by upper and lower two is constituted, rolling wheel set energy self-heating (60~200 DEG C), and rolling wheel set
With certain heatproof, the characteristic of inertia, not plastic adherent.
Band-like nanocrystalline lamination magnetic sheet 1 1-2 and is located at PET film 1-1 as shown in figure 3, by PET film 1-1, amorphous between 1-2
Or nanocrystalline strip N1~N4 and glue B0~B4 is constituted, amorphous or amorphous nanocrystalline strip and glue are the main part of tape laminate 1
Point, PET film 1-1,1-2 main function is carrying magnetic material, so that magnetic screen piece has enough intensity in transmission process,
Avoid magnetic material fracture, deformation.
In first group of fragmentation rolling wheel set 2,3 according to the pressure and rolling required nanocrystalline, amorphous electrical resistance to fragmentation roller
Speed is adjusted, so that nanocrystalline electric property is within claimed range.
In second, three group of 4,5,6,7 energy self-heating of silicon rubber heating rolling wheel set, temperature tune (60~200 DEG C), pressure
And speed is whole arrives desired value, hot pressing accelerates glue accelerated ageing used in nanocrystalline, amorphous lamination, makes nanocrystalline, amorphous fragment and gas
The relative position of gap is fixed, and achievees the effect that nanocrystalline, amorphous electric property has and stable, as shown in figure 4, the figure is former
The schematic diagram of beginning processing scraps, glue and air gap, as shown in figure 5, the figure is broken after adding fragmentation heat pressing process after common process is bonded
The schematic diagram of piece, glue and air gap, it is clear that new process has a clear superiority to firm fragment and gap position.
The result of efficiency test is as shown in table one, table two and table three:
Table one
As shown in Table 1, to the magnetic conductivity of fragmentation after amorphous, nanocrystalline strip original process and conventional fitting, heat pressing process
It is tested, in the case where frequency point 100kHz, fragmentation after conventional fitting, heat pressing process treated band is located compared to not doing
The band of reason, real part μ ' are slightly reduced, imaginary part magnetic permeability μ " it reduces, magnetic sheet Q value increases.
Table two
As shown in Table 2, using fragmentation after original process and conventional fitting, the amorphous and nanocrystalline magnetic sheet list of heat pressing process
Member.It is tested under the conditions of 100kHz/1V, fragmentation after conventional fitting, heat pressing process treated amorphous, nanocrystalline strip are compared
The band not processed, inductance Ls are slightly reduced, and impedance also reduces, and Q value increases.
Table three
Table three is charge efficiency test comparison, fragmentation after conventional fitting, heat pressing process amorphous magnetic sheet, charge efficiency improves
1.4%；Fragmentation after conventional fitting, heat pressing process nanocrystalline magnetic sheet, charge efficiency improves 1.29%, while nanocrystalline strip system
Standby magnetic sheet efficiency is higher than the magnetic sheet of amorphous magnetic sheet preparation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of preparation process for wireless charging magnetic sheet, it is characterised in that: by band to be processed and pass through winding, heat
And then processing, single-side coating, magnetic sheet fragmentation processing carry out single-side coating, adhesive lamination, the rolling of broken magnetic and heat again to band
Pressure processing finally requires to be punched out processing according to size.
2. a kind of preparation process for wireless charging magnetic sheet according to claim 1, it is characterised in that: the band packet
Include amorphous with it is nanocrystalline.
3. a kind of preparation process for wireless charging magnetic sheet according to claim 1, it is characterised in that: single-side coating is adopted
Cover adhesive process with roll-to-roll, by with one side glue protective film be attached to it is heat treated after strip surface, as next step
Press former material.
4. a kind of preparation process for wireless charging magnetic sheet according to claim 1, it is characterised in that: at magnetic sheet fragmentation
Reason uses Mechanical Crushing, laser cutting or chemical etching treatment process.
5. a kind of preparation process for wireless charging magnetic sheet according to claim 1, it is characterised in that: in magnetic sheet fragmentation
After processing, single-side coating processing is using printing coating process again, by designing shape, the size of colloid, is coated with by printing
Method, in fragmentation, treated that strip surface carries out covering glue.
6. a kind of preparation process for wireless charging magnetic sheet according to claim 1, it is characterised in that: at adhesive lamination
Reason is fragmentation band by single-side coating again after processed with glue fit to another band do not have glue while, such as
This fitting is at the required number of plies.
7. a kind of preparation process for wireless charging magnetic sheet according to claim 2, it is characterised in that: amorphous, nanometer
Brilliant magnetic sheet is after fitting is at the required number of plies, then carries out whole broken magnetic hot pressing.
8. a kind of preparation process for wireless charging magnetic sheet according to claim 1, it is characterised in that: meet punching
It is required that magnetic sheet be bonded with coil, be tested for the property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811215230.4A CN109243799A (en) | 2018-10-18 | 2018-10-18 | A kind of preparation process for wireless charging magnetic sheet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811215230.4A CN109243799A (en) | 2018-10-18 | 2018-10-18 | A kind of preparation process for wireless charging magnetic sheet |
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| Publication Number | Publication Date |
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| CN109243799A true CN109243799A (en) | 2019-01-18 |
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| CN201811215230.4A Pending CN109243799A (en) | 2018-10-18 | 2018-10-18 | A kind of preparation process for wireless charging magnetic sheet |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109671549A (en) * | 2019-01-30 | 2019-04-23 | 深圳市晶磁材料技术有限公司 | Wireless charger magnetic conduction sheet and preparation method thereof |
| CN109712775A (en) * | 2019-01-30 | 2019-05-03 | 深圳市晶磁材料技术有限公司 | The preparation method of wireless charger magnetic conduction sheet |
| CN109817442A (en) * | 2019-02-01 | 2019-05-28 | 信维通信（江苏）有限公司 | A kind of nanocrystalline antifreeze plate and preparation method thereof |
| CN112467824A (en) * | 2020-11-02 | 2021-03-09 | 信维通信（江苏）有限公司 | Wireless charging shielding sheet and preparation method thereof, wireless charging module and magnetic crushing equipment |
| CN113707443A (en) * | 2021-08-23 | 2021-11-26 | 横店集团东磁股份有限公司 | Preparation method of nanocrystalline magnetic core and nanocrystalline magnetic core |
| CN115351429A (en) * | 2022-09-15 | 2022-11-18 | 宁波中益赛威材料科技有限公司 | Preparation method of iron-based amorphous and nanocrystalline |
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| CN104011814A (en) * | 2011-12-21 | 2014-08-27 | 阿莫先恩电子电器有限公司 | Magnetic field shielding sheet for a wireless charger, method for manufacturing same, and receiving apparatus for a wireless charger using the sheet |
| CN106912188A (en) * | 2015-12-22 | 2017-06-30 | 上海光线新材料科技有限公司 | A kind of wireless charging preparation method and electromagnetic shielding piece for being electromagnetically shielded piece |
| CN108140479A (en) * | 2015-10-05 | 2018-06-08 | 阿莫绿色技术有限公司 | Magnetic piece, comprising its module and include its mancarried device |
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2018
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Patent Citations (3)
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| CN104011814A (en) * | 2011-12-21 | 2014-08-27 | 阿莫先恩电子电器有限公司 | Magnetic field shielding sheet for a wireless charger, method for manufacturing same, and receiving apparatus for a wireless charger using the sheet |
| CN108140479A (en) * | 2015-10-05 | 2018-06-08 | 阿莫绿色技术有限公司 | Magnetic piece, comprising its module and include its mancarried device |
| CN106912188A (en) * | 2015-12-22 | 2017-06-30 | 上海光线新材料科技有限公司 | A kind of wireless charging preparation method and electromagnetic shielding piece for being electromagnetically shielded piece |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109671549A (en) * | 2019-01-30 | 2019-04-23 | 深圳市晶磁材料技术有限公司 | Wireless charger magnetic conduction sheet and preparation method thereof |
| CN109712775A (en) * | 2019-01-30 | 2019-05-03 | 深圳市晶磁材料技术有限公司 | The preparation method of wireless charger magnetic conduction sheet |
| CN109671549B (en) * | 2019-01-30 | 2024-02-06 | 深圳市晶磁材料技术有限公司 | Magnetic conductive sheet for wireless charger and preparation method thereof |
| CN109817442A (en) * | 2019-02-01 | 2019-05-28 | 信维通信（江苏）有限公司 | A kind of nanocrystalline antifreeze plate and preparation method thereof |
| CN112467824A (en) * | 2020-11-02 | 2021-03-09 | 信维通信（江苏）有限公司 | Wireless charging shielding sheet and preparation method thereof, wireless charging module and magnetic crushing equipment |
| CN112467824B (en) * | 2020-11-02 | 2023-04-28 | 信维通信（江苏）有限公司 | Wireless charging shielding sheet, preparation method thereof, wireless charging module and magnetic crushing equipment |
| CN113707443A (en) * | 2021-08-23 | 2021-11-26 | 横店集团东磁股份有限公司 | Preparation method of nanocrystalline magnetic core and nanocrystalline magnetic core |
| CN115351429A (en) * | 2022-09-15 | 2022-11-18 | 宁波中益赛威材料科技有限公司 | Preparation method of iron-based amorphous and nanocrystalline |
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