CN109545535A - A kind of preparation method of the magnetic screen piece on wireless charging and NFC - Google Patents
A kind of preparation method of the magnetic screen piece on wireless charging and NFC Download PDFInfo
- Publication number
- CN109545535A CN109545535A CN201811215261.XA CN201811215261A CN109545535A CN 109545535 A CN109545535 A CN 109545535A CN 201811215261 A CN201811215261 A CN 201811215261A CN 109545535 A CN109545535 A CN 109545535A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- magnetic material
- preparation
- fragmentation
- screen piece
- 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
Links
Classifications
-
- 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
- H01F41/0233—Manufacturing of magnetic circuits made from sheets
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0075—Magnetic shielding materials
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Laminated Bodies (AREA)
Abstract
The preparation method for the magnetic screen piece that the invention discloses a kind of on wireless charging and NFC, it comprises the step of are as follows: magnetic material needed for production magnetic screen piece is provided, processing, heat treatment, single-side coating, fitting fragmentation, secondary fitting fragmentation and so on are wound to the magnetic material, until finally obtained magnetic sheet performance reaches requirement, edging moulding processing is finally carried out, the spooling length and heat treatment process parameter that the present invention uses can improve nanocrystalline stability and magnetic conductivity performance to greatest extent；It is by the risk of release film leukorrhagia that the novel laminating type used, which can reduce magnetic material in dyestripping,；The fragmentation mode of use can guarantee that every layer of magnetic material can maximumlly obtain fragmentation by roll-to-roll mode, and fragmentation particle is uniform, and magnetic sheet surface is smooth, and appearance yield and performance yield are high；In addition fragmentation mode not only saves various auxiliary materials needed for fragmentation, reduces the cost of manufacture of magnetic sheet, improve production efficiency compared to conventional fragmentation mode.
Description
Technical field
It is specially a kind of on wireless charging and NFC the present invention relates to wireless charging and technical field of near field communication
The preparation method of magnetic screen piece.
Background technique
Near-field communication technology (NFC) be have non-contact radio-frequency identification (RFID) and interconnection technology integration develop and
Come, combines induction type card reader, icah wavw and point-to-point function on a single chip, can be set in short distance with compatible
It is standby to be identified and exchanged data.NFC antenna is the component for being used to emit or receive electromagnetic wave in wireless charging, it is transmission
The guided wave propagated on line changes the electromagnetic wave propagated in medialess (usually free space) into, or carries out opposite change
It changes.The engineering systems such as radio communication, broadcast, TV, radar, navigation, electronic countermeasure, remote sensing, radio astronomy, it is all to utilize electricity
Magnetic wave transmits information, requires to work by antenna.
Wireless charging (WPC) is derived from wireless power transmission technology, refers to and is charged using electromagnetic wave induction principle, principle
Similar to transformer.The technology respectively has a coil in transmitting terminal and receiving end.Send end-coil be connected with line power supply to
Transmission of electromagnetic signals, the electromagnetic signal that the coil-induced transmitting terminal in receiving end issues is to generate electric current for battery charging.It receives
End-coil needs to be electromagnetically shielded by shielding piece, prevents external signal interference.
At present in the module of wireless charging, the main function by the magnetic screen piece of magnetic material production is: 1, being induction
Coil coupling provides the channel of high magnetic permeability, improves charge efficiency；2, the coil windings of induction, the outside spoke in magnetic field of alternation are avoided
Radio magnetic disturbance plays the role of shielding to influence the normal works of other electronics, in existing preparation process, wireless charging
With in electromagnetic shielding piece preparation process, the material that overlay film is completed often is transferred to smashing device and is made, is then pasted
The shielding piece of corresponding laminated construction is made in cooperation industry.Existing fragmentation equipment effect fragmentation effect is undesirable, the magnetic sheet that fragmentation goes out
Rough surface, particle are uneven, and part also has clast and falls.The problem of appearing above will lead to the magnetic conductivity loss of magnetic sheet
Higher, eddy current effect caused by magnetic sheet is larger, and magnetic flux leakage is than more serious.It will lead on being applied to wireless charging and NFC
Charge efficiency is low, and magnetism isolating effect is poor, and charge when battery fever phenomenon it is obvious.
Summary of the invention
The problem of for background technique, the present invention provides a kind of magnetic screens on wireless charging and NFC
The preparation method of piece.
To achieve the above object, the invention provides the following technical scheme: a kind of magnetic screen on wireless charging and NFC
The preparation method of piece, method includes the following steps:
1) magnetic material needed for providing production magnetic screen piece, is wound processing to the magnetic material；
2) magnetic material after the completion of winding is heat-treated；
3) magnetic material after taking at least one layer of be heat-treated carries out single-side coating processing；
4) by two panels, by single-side coating, treated that the magnetic material is bonded；
5) magnetic material after fitting is subjected to fragmentation processing；
6) by fragmentation, treated that the magnetic material carries out secondary fitting；
7) secondary fragmentation processing is carried out to the magnetic material of secondary fitting, and so on, until finally obtained magnetic
Piece performance reaches requirement；
8) magnetic sheet of finally obtained required specification is required to be punched out edging moulding according to corresponding size.
As a preferred technical solution of the present invention, in step 7), the finally obtained magnetic sheet number of plies be singular layer or
Even numbers layer.
As a preferred technical solution of the present invention, the magnetic material needed for preparing magnetic screen piece is iron-based, cobalt
One of the Ni-based amorphous of base, iron and nanometer crystal alloy band are a variety of.
As a preferred technical solution of the present invention, the magnetic material thickness for preparing magnetic screen piece is 10 μm~40
μm；Material width is 50mm~110mm.
As a preferred technical solution of the present invention, the magnetic material is rolled treated interior diameter is 50mm~
80mm, overall diameter are 110mm~150mm.
As a preferred technical solution of the present invention, when magnetic material is nanocrystalline material, heat treatment temperature 450
DEG C~600 DEG C, the heating-up time is 1 hour~3 hours, and soaking time is 1 hour~4 hours, and the temperature rise period is 2~3 stages,
Holding stage is 3~5 stages.
As a preferred technical solution of the present invention, when magnetic material is non-crystalline material, heat treatment temperature is 380 DEG C
~500 DEG C, the heating-up time is 1 hour~2 hours, and soaking time is 1 hour~4 hours, and the temperature rise period is 2 stages, heat preservation
Stage is 2 stages.
As a preferred technical solution of the present invention, heat treatment uses vacuum heat treatment or atmosphere heat treatment, in Re Chu
Reason can add transverse magnetic processing, vertical magnetic field processing simultaneously or magnetic field processing is not added.
As a preferred technical solution of the present invention, the gas used in atmosphere heat treatment is lazy for nitrogen or argon gas etc.
Property gas.
It is covered when carrying out single-side coating to the magnetic material using coiled strip as a preferred technical solution of the present invention
Adhesive process carries out operation, and the glue material used is to there is substrate double-sided adhesive or without substrate double-sided adhesive, and the glue material is with a thickness of 2 μm~15
μm。
As a preferred technical solution of the present invention, in step 4), that treated is described by single-side coating for two panels
The specific steps that magnetic material is bonded are as follows: take the magnetic material of one layer of single-side coating to carry out another side and cover glue processing；
The magnetic material of the two-sided magnetic material for covering glue and another layer of single-side coating is subjected to laminating process.
As a preferred technical solution of the present invention, it is roll-to-roll fragmentation mode, broken magnetic roller wheel that fragmentation processing, which uses,
On roller flower-shape shape be rectangular, diamond shape, circle or other regular shapes.
Compared with prior art, the beneficial effects of the present invention are:
1, it is made using the amorphous nano-crystalline alloy soft magnetic material of high magnetic permeability, low magnetic loss；It can effectively improve
The performance of magnetic sheet.
2, the coiling iron core internal-and external diameter thickness and heat treatment process parameter used, can be most by prolonged test
The raising of limits nanocrystalline stability and magnetic conductivity performance；
3, it is by the risk of release film leukorrhagia that the novel laminating type used, which can reduce magnetic material in dyestripping,；
4, the novel fragmentation mode used can guarantee that every layer of magnetic material can be obtained maximumlly by roll-to-roll fragmentation mode
To fragmentation, and fragmentation particle is uniform, and magnetic sheet surface is smooth, and appearance yield and performance yield are high；
5, the novel fragmentation mode used not only saves various auxiliary needed for fragmentation compared to conventional fragmentation mode
Material reduces the cost of manufacture of magnetic sheet, improves production efficiency.
Detailed description of the invention
Fig. 1 is a kind of preparation method process signal of magnetic screen piece on wireless charging and NFC provided by the invention
Figure；
Fig. 2 is laminating type schematic diagram when the required magnetic sheet number of plies is singular layer in the present embodiment；
Fig. 3 is laminating type schematic diagram when the required magnetic sheet number of plies is even numbers layer in the present embodiment；
Fig. 4 is the roll-to-roll structural schematic diagram that fragmentation processing uses in the present invention；
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.
Embodiment:
Referring to Fig. 1, the present invention provides a kind of preparation method of magnetic screen piece on wireless charging and NFC, the party
Method the following steps are included:
1) magnetic material needed for providing production magnetic screen piece, is wound processing to the magnetic material；
2) magnetic material after the completion of winding is heat-treated；
3) magnetic material after taking at least one layer of be heat-treated carries out single-side coating processing；
4) by two panels, by single-side coating, treated that the magnetic material is bonded；
5) magnetic material after fitting is subjected to fragmentation processing；
6) by fragmentation, treated that the magnetic material carries out secondary fitting；
7) secondary fragmentation processing is carried out to the magnetic material of secondary fitting, and so on, until finally obtained magnetic
Piece performance reaches requirement；
8) magnetic sheet of finally obtained required specification is required to be punched out edging moulding according to corresponding size.
In the specific implementation process, the finally obtained magnetic sheet number of plies is singular layer or even numbers layer.
In the specific implementation process, the magnetic material needed for preparing magnetic screen piece is Ni-based non-of iron-based, cobalt-based, iron
One of brilliant and nanometer crystal alloy band is a variety of.
In the specific implementation process, the magnetic material thickness for preparing magnetic screen piece is 10 μm~40 μm；Material width
For 50mm~110mm.
In the specific implementation process, rolled treated the interior diameter of the magnetic material is 50mm~80mm, overall diameter
For 110mm~150mm.
In the specific implementation process, when magnetic material is nanocrystalline material, heat treatment temperature is 450 DEG C~600 DEG C, is risen
The warm time is 1 hour~3 hours, and soaking time is 1 hour~4 hours, and the temperature rise period is 2~3 stages, holding stage 3
~5 stages.
In the specific implementation process, when magnetic material is non-crystalline material, heat treatment temperature is 380 DEG C~500 DEG C, heating
Time is 1 hour~2 hours, and soaking time is 1 hour~4 hours, and the temperature rise period is 2 stages, and holding stage is 2 ranks
Section.
In the specific implementation process, heat treatment uses vacuum heat treatment or atmosphere heat treatment, can add simultaneously in heat treatment
Magnetic field processing is not added in transverse magnetic processing, vertical magnetic field processing.
In the specific implementation process, the gas used in atmosphere heat treatment is the inert gas such as nitrogen or argon gas.
In the specific implementation process, when carrying out single-side coating to the magnetic material, adhesive process is covered using coiled strip and is made
Industry, the glue material used is to there is substrate double-sided adhesive or without substrate double-sided adhesive, and the glue material is with a thickness of 2 μm~15 μm.
In the specific implementation process, in step 4), treated that the magnetic material carries out by single-side coating for two panels
The specific steps of fitting are as follows: take the magnetic material of one layer of single-side coating to carry out another side and cover glue processing；This two-sided is covered into glue
The magnetic material of magnetic material and another layer of single-side coating carry out laminating process.
In the specific implementation process, it is roll-to-roll fragmentation mode that fragmentation processing, which uses, the roller flower-shape shape on broken magnetic roller wheel
For rectangular, diamond shape, circle or other regular shapes.
In the present embodiment we by taking magnetic sheet laminated construction is n-layer as an example (n be odd number), preparation process is carried out specifically
It is bright, it is illustrated in figure 2 the specific embodiment of step 4), comprising:
1, one layer of identical pair covered with step 3) on glue surface plaster is not covered in the another of the monolayer material S1 of single-side coating
Face glue T0；
2, another no glue surface of material S2 that one layer has covered glue T2 is fitted on T0；
3, similarly, another no glue surface of material S3 that one layer has covered glue T3 is fitted on T1；
And then carry out step 5) fragmentation processing, the roll-to-roll structure that uses in fragmentation processing as shown in figure 4, wherein 1b,
2b is fixed active fragmentation roller, and 1a, 2a are driven fragmentation roller, and 1a, 2a, 1b, 2b have decorative pattern, and c-axis is dispensing shaft, and d axis is
Collecting shaft, S are magnetic material；Above-mentioned steps 4) in the magnetic material two sides that the has been bonded protective film that has double-sided adhesive included, can
Fragmentation is directly carried out, breakage is caused to material to material surface without worrying that roller is directly contacted, it, will be magnetic during fragmentation
Material is entirely passed through from roller by the draw of roller, is controlled by controlling the stroke spacing between two rollers up and down
Fragmentation degree then controls the magnetic conductivity of material with being fragmented material, thus obtains the magnetic sheet of required performance.
Step 6) is executed again, magnetic material S4 to be fit is fitted on T2, similarly, by magnetic material S5 to be fit
It fits on T3, obtains the magnetic sheet of 5 stacking structures (magnetic material S4 and S5 are not shown)；
The operation for repeating step 5) obtains the magnetic sheet of 5 stacking structures of required performance.
Similarly, it repeats to appeal the step 6), the process of step 7), until the n-layer for obtaining required performance folds the magnetic of structure
Piece；
The processing of step 8) edging moulding is finally carried out, the required performance that will specifically obtain after the operation for carrying out the fragmentation
The magnetic sheet of specification requires to be punched out molding according to corresponding size, then by the magnetic sheet of final laminated construction and FPC coil, graphite
Piece etc. is combined, and obtains being electromagnetically shielded piece accordingly.
It is further noted that as shown in figure 3, when required magnetic sheet laminated construction number of plies n be even numbers when, required operation stream
Journey is same as above.
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 (12)
1. a kind of preparation method of the magnetic screen piece on wireless charging and NFC, it is characterised in that this method includes following step
It is rapid:
1) magnetic material needed for providing production magnetic screen piece, is wound processing to the magnetic material；
2) magnetic material after the completion of winding is heat-treated；
3) magnetic material after taking at least one layer of be heat-treated carries out single-side coating processing；
4) by two panels, by single-side coating, treated that the magnetic material is bonded；
5) magnetic material after fitting is subjected to fragmentation processing；
6) by fragmentation, treated that the magnetic material carries out secondary fitting；
7) secondary fragmentation processing is carried out to the magnetic material of secondary fitting, and so on, until finally obtained magnetic sheet
Requirement can be reached；
8) magnetic sheet of finally obtained required specification is required to be punched out edging moulding according to corresponding size.
2. a kind of preparation method of magnetic screen piece on wireless charging and NFC according to claim 1, feature exist
In: in step 7), the finally obtained magnetic sheet number of plies is singular layer or even numbers layer.
3. a kind of preparation method of magnetic screen piece on wireless charging and NFC according to claim 1, feature exist
In: in the amorphous and nanometer crystal alloy band that the magnetic material is iron-based, cobalt-based, iron is Ni-based needed for preparation magnetic screen piece
It is one or more.
4. a kind of preparation method of magnetic screen piece on wireless charging and NFC according to claim 1, feature exist
In: the magnetic material thickness of preparation magnetic screen piece is 10 μm~40 μm；Material width is 50mm~110mm.
5. a kind of preparation method of magnetic screen piece on wireless charging and NFC according to claim 1, feature exist
In: the magnetic material it is rolled treated that interior diameter is 50mm~80mm, overall diameter is 110mm~150mm.
6. a kind of preparation method of magnetic screen piece on wireless charging and NFC according to claim 3, feature exist
In: when magnetic material is nanocrystalline material, heat treatment temperature is 450 DEG C~600 DEG C, and the heating-up time is 1 hour~3 hours,
Soaking time is 1 hour~4 hours, and the temperature rise period is 2~3 stages, and holding stage is 3~5 stages.
7. a kind of preparation method of magnetic screen piece on wireless charging and NFC according to claim 3, feature exist
In: when magnetic material is non-crystalline material, heat treatment temperature is 380 DEG C~500 DEG C, and the heating-up time is 1 hour~2 hours, is protected
The warm time is 1 hour~4 hours, and the temperature rise period is 2 stages, and holding stage is 2 stages.
8. a kind of preparation method of magnetic screen piece on wireless charging and NFC according to claim 1, feature exist
In: heat treatment uses vacuum heat treatment or atmosphere heat treatment, heat treatment can add simultaneously transverse magnetic processing, the processing of vertical magnetic field or
Magnetic field processing is not added.
9. a kind of preparation method of magnetic screen piece on wireless charging and NFC according to claim 8, feature exist
In: the gas used in atmosphere heat treatment is the inert gas such as nitrogen or argon gas.
10. a kind of preparation method of magnetic screen piece on wireless charging and NFC according to claim 1, feature
It is: when carrying out single-side coating to the magnetic material, adhesive process is covered using coiled strip and carries out operation, the glue material used is has substrate
Double-sided adhesive or without substrate double-sided adhesive, the glue material is with a thickness of 2 μm~15 μm.
11. a kind of preparation method of magnetic screen piece on wireless charging and NFC according to claim 1, feature
Be: in step 4), two panels is by single-side coating treated specific steps that the magnetic material is bonded are as follows: takes one
The magnetic material of layer single-side coating carries out another side and covers glue processing；By the two-sided magnetic material for covering glue and another layer of single side
The magnetic material for covering glue carries out laminating process.
12. a kind of preparation method of magnetic screen piece on wireless charging and NFC according to claim 1, feature
Be: to use be roll-to-roll fragmentation mode for fragmentation processing, the roller flower-shape shape on broken magnetic roller wheel be rectangular, diamond shape, circle or
Other regular shapes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811215261.XA CN109545535A (en) | 2018-10-18 | 2018-10-18 | A kind of preparation method of the magnetic screen piece on wireless charging and NFC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811215261.XA CN109545535A (en) | 2018-10-18 | 2018-10-18 | A kind of preparation method of the magnetic screen piece on wireless charging and NFC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109545535A true CN109545535A (en) | 2019-03-29 |
Family
ID=65844171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811215261.XA Pending CN109545535A (en) | 2018-10-18 | 2018-10-18 | A kind of preparation method of the magnetic screen piece on wireless charging and NFC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109545535A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110154372A (en) * | 2019-05-24 | 2019-08-23 | 苏州安洁科技股份有限公司 | Nanocrystalline cross cutting wrapping process and equipment |
| CN111009372A (en) * | 2019-12-24 | 2020-04-14 | 横店集团东磁股份有限公司 | Method and equipment for preparing amorphous nanocrystalline magnetic sheet |
| CN111564304A (en) * | 2020-05-22 | 2020-08-21 | 上海万兹新材料科技有限公司 | Preparation method of ultrathin high-stability magnetic sheet |
| CN112103642A (en) * | 2019-06-18 | 2020-12-18 | 阿莫先恩电子电器有限公司 | Magnetic field shielding sheet, method for manufacturing the same, wireless power receiving module, and portable terminal device using the same |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004031578A (en) * | 2002-06-25 | 2004-01-29 | Kitagawa Ind Co Ltd | Magnetic sheet |
| CN103247853A (en) * | 2012-02-10 | 2013-08-14 | 比亚迪股份有限公司 | NFC antenna, mobile terminal as well as manufacturing method of NFC antenna |
| JP6033089B2 (en) * | 2013-01-07 | 2016-11-30 | 新日鐵住金株式会社 | Electrical steel sheet and rotor for rotor core |
| CN108045063A (en) * | 2017-11-02 | 2018-05-18 | 上海量子绘景电子股份有限公司 | A kind of preparation method of wireless charging electromagnetic shielding piece |
| CN108461262A (en) * | 2018-01-26 | 2018-08-28 | 麦格磁电科技（珠海）有限公司 | A kind of magnetic flakes and its manufacturing method based on amorphous or nanocrystalline strip |
| CN108481877A (en) * | 2018-03-10 | 2018-09-04 | 葛理想 | The breaking treatment process of electromagnetic shielding magnetic material |
| CN108541208A (en) * | 2018-04-25 | 2018-09-14 | 邵爽 | The preparation method of wireless charging electromagnetic shielding piece |
| CN108666115A (en) * | 2018-05-08 | 2018-10-16 | 苏州世诺新材料科技有限公司 | A kind of low-loss amorphous, nanocrystalline magnetic sheet and preparation method thereof |
-
2018
- 2018-10-18 CN CN201811215261.XA patent/CN109545535A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004031578A (en) * | 2002-06-25 | 2004-01-29 | Kitagawa Ind Co Ltd | Magnetic sheet |
| CN103247853A (en) * | 2012-02-10 | 2013-08-14 | 比亚迪股份有限公司 | NFC antenna, mobile terminal as well as manufacturing method of NFC antenna |
| JP6033089B2 (en) * | 2013-01-07 | 2016-11-30 | 新日鐵住金株式会社 | Electrical steel sheet and rotor for rotor core |
| CN108045063A (en) * | 2017-11-02 | 2018-05-18 | 上海量子绘景电子股份有限公司 | A kind of preparation method of wireless charging electromagnetic shielding piece |
| CN108461262A (en) * | 2018-01-26 | 2018-08-28 | 麦格磁电科技（珠海）有限公司 | A kind of magnetic flakes and its manufacturing method based on amorphous or nanocrystalline strip |
| CN108481877A (en) * | 2018-03-10 | 2018-09-04 | 葛理想 | The breaking treatment process of electromagnetic shielding magnetic material |
| CN108541208A (en) * | 2018-04-25 | 2018-09-14 | 邵爽 | The preparation method of wireless charging electromagnetic shielding piece |
| CN108666115A (en) * | 2018-05-08 | 2018-10-16 | 苏州世诺新材料科技有限公司 | A kind of low-loss amorphous, nanocrystalline magnetic sheet and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110154372A (en) * | 2019-05-24 | 2019-08-23 | 苏州安洁科技股份有限公司 | Nanocrystalline cross cutting wrapping process and equipment |
| CN112103642A (en) * | 2019-06-18 | 2020-12-18 | 阿莫先恩电子电器有限公司 | Magnetic field shielding sheet, method for manufacturing the same, wireless power receiving module, and portable terminal device using the same |
| CN112103642B (en) * | 2019-06-18 | 2021-11-09 | 阿莫先恩电子电器有限公司 | Magnetic field shielding sheet, method for manufacturing same, wireless power receiving module, and terminal device |
| CN111009372A (en) * | 2019-12-24 | 2020-04-14 | 横店集团东磁股份有限公司 | Method and equipment for preparing amorphous nanocrystalline magnetic sheet |
| CN111564304A (en) * | 2020-05-22 | 2020-08-21 | 上海万兹新材料科技有限公司 | Preparation method of ultrathin high-stability magnetic sheet |
| CN111564304B (en) * | 2020-05-22 | 2022-07-26 | 上海万兹新材料科技有限公司 | Preparation method of ultrathin high-stability magnetic sheet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109545535A (en) | A kind of preparation method of the magnetic screen piece on wireless charging and NFC | |
| CN107354389B (en) | Nanocrystalline alloy electromagnetic shielding sheet, preparation method thereof, nanocrystalline alloy and shielding antenna | |
| CN111670518B (en) | Antenna module including shielding layer and wireless power receiving apparatus | |
| CN107610923A (en) | A kind of wireless charging magnetic conduction sheet preparation technology | |
| WO2014077098A1 (en) | Multi-coil module and electronic device | |
| KR101732944B1 (en) | Complex ferrite magnetic field shielding sheet, manufacturing method thereof, and antenna module using the same | |
| CN106922111A (en) | A kind of nanometer crystal alloy, the wireless charging preparation method and electromagnetic shielding piece for being electromagnetically shielded piece | |
| TW201448359A (en) | Antenna apparatus and electronic device | |
| CN104901399A (en) | Wireless communication and charge substrate and wireless communication and charge device | |
| US20190214180A1 (en) | Magnetic sheet and wireless power receiving device comprising same | |
| TW201445816A (en) | Antenna apparatus and electronic device | |
| KR20180092668A (en) | Magnetic sheet and wireless power receiving apparatus including the same | |
| KR101971090B1 (en) | Receiving antennas and wireless power receiving apparatus comprising the same | |
| TWI611631B (en) | Electronic machine and coil module | |
| KR20160100786A (en) | Shielding unit for combo antenna and wireless charging module having the same | |
| CN111433974A (en) | Antenna module | |
| CN105340128B (en) | Receiving antenna and wireless power reception device including the receiving antenna | |
| CN109712800B (en) | Magnetic sheet based on amorphous or nanocrystalline strip and preparation method thereof | |
| JP6147558B2 (en) | Magnetic composite sheet and electromagnetic induction module | |
| KR20140108946A (en) | Soft magnetism sheet | |
| KR20150128031A (en) | Soft magnetic alloy, wireless power transmitting apparatus and wireless power receiving apparatus comprising the same | |
| KR102154258B1 (en) | Wireless power receiving apparatus and portable terminal having the same | |
| CN108541208A (en) | The preparation method of wireless charging electromagnetic shielding piece | |
| CN108990398A (en) | A kind of composite electromagnetic screen piece and preparation method thereof | |
| KR20190058024A (en) | Antenna mudule comprising shielding element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190329 |