CN108447674A - A kind of wireless charging transmitting-receiving module preparation process and wireless charging receive and dispatch module - Google Patents
A kind of wireless charging transmitting-receiving module preparation process and wireless charging receive and dispatch module Download PDFInfo
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- CN108447674A CN108447674A CN201810400023.XA CN201810400023A CN108447674A CN 108447674 A CN108447674 A CN 108447674A CN 201810400023 A CN201810400023 A CN 201810400023A CN 108447674 A CN108447674 A CN 108447674A
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- magnetic sheet
- alperm
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- band
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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
- H01F41/0233—Manufacturing of magnetic circuits made from sheets
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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
- H01F41/005—Impregnating or encapsulating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of wireless chargings to receive and dispatch module preparation process, including：Step S1 prepares Alperm band；Alperm band after winding is put into heat-treatment furnace and is heat-treated by step S2；Step S3 carries out single-side coating to the Alperm band after heat treatment；Step S4 is patterned processing to Alperm band；Glue is covered on step S5, the surface to not covering glue in Alperm band again；Alperm band is bonded the default number of plies, is later laminated the magnetic sheet that fitting is formed by step S6 successively；Step S7 is punched out obtained magnetic sheet；Magnetic sheet after punching is bonded, is assembled later with coil by step S8 successively so that in magnetic sheet and coil are generally aligned in the same plane, obtains receiving and dispatching module based on the wireless charging of coil and magnetic sheet.Coil can be embedded in inside permeability magnetic material by the present invention, and then the power transmission efficiency realized power transmission, improve wireless charging transmitting-receiving module.
Description
Technical field
The present invention relates to the reception of wireless charging device and sending modules more particularly to a kind of wireless charging to receive and dispatch module system
Standby technique and wireless charging receive and dispatch module.
Background technology
With the extensive use of the high speed development and electronic equipment of science and technology, the work and life of people is more and more
Dependent on electronic equipment, about the live part of electronic equipment, wireless charging technology is also known as induction charging, Non-contact type charging
Electricity is derived from a kind of New-type charge technology of wireless power conveying technology generation.Wireless charging technology utilizes near-field sensing, by nothing
Micro USB electric appliance, which transmits its energy to, needs charging equipment.Under normal circumstances, the energy of capacitive transmission is very little, this and electrode area
It is small to have prodigious relationship.Therefore, it in order to meet to the power level (such as from 5W to 25w) needed for consumer device charging, needs
The voltage value for increasing electrode size and coupling, is specifically dependent upon actual configuration.In order to realize the wireless receipts between coupling electrode
It sends out while minimizing external amount of radiation, need correctly to be designed.It should be further understood that and determining correct electrode
Size, their design, operating voltage, performance number, frequency optimum traffic and total size constraint.Under normal circumstances, it manages
In 200kHz between 1MHz, the voltage value in efficient coupling area fills the frequency range thought in 800V to mobile phone wireless between 1.52kV
Electricity.
The wireless charging technology of magnetic coupling principle, closer to conventional resonance type switching power.Relative to electric field coupling
For conjunction, technical difficulty is smaller.Advantage is obvious, and development speed has comparatively fast formed three larger alliances of influence power at present
Organize WPC, A4WP and PMA.Respectively possess the up to dozens or even hundreds of company of member.Wherein WPC and PMA is dedicated to low coverage
From wireless charging technology, such as currently used mobile phone wireless charges.And the technological orientation of A4WP is in remote-wireless energy transmission,
It wants to realize tens centimetres even transmission range of several meters of grades.Wireless charging represents primary great on charging technique
It changes, wireless charging makes user break away from the constraint of cable, it is only necessary to which equipment is placed in wireless charging board (charging pad)
Face can be carried out charging.Wireless charging technology has been widely applied to electric toothbrush, electric shaver, radio telephone, intelligence
The fields such as the mechanical, electrical electrical automobile of expert.
BYD has just applied for non-contact induction type charger patent early in December, 2005.What is utilized is exactly electromagnetic induction
Wireless charging is carried out, BYD is sold to one pure electric vehicle bus of University of Utah, it is wireless that this bus assembles newest wave
Charging pad.Bus is parked on charging pad by driver, and undergoing several minutes of waiting can be fully charged.The states such as Germany, Japan are also very
Actively.In Munich, Germany, the test of household radio charging is already proceeded by, Japanese Feng Qiao technological sciences university is in research energy
Enough penetrate 20 cm thicks Concrete brick by power transmission to the road charging unit of automobile.2011, it is equipped with wireless charging
Nokia's mobile phone of Electricity Functional comes out.The popular type Galaxy S6 of Samsung mobile phone in March, 2015 announcement support wireless charging
Electricity, then release one after another 7 flagship type of S7 and Note again, equally supports wireless charging function.
Wireless charging technology developed recently is rapid, but also encounters many technical barriers.Such as improve charge efficiency, reduce at
Originally, effective charging distance is too short.To obtain higher charge efficiency, influence of the electromagnetic field to mobile phone when charging is reduced or eliminated,
It needs to be shielded using electromagnetic shielding piece.The effect for being electromagnetically shielded piece is exactly to completely cut off electromagnetic wave, and the materials such as metal is prevented to absorb
Electromagnetic wave that transmitting end equipment is sent out and the magnetic field for generating negative direction.In mobile phone wireless charges receiving terminal, if without electromagnetism
Piece is shielded, wireless charging device can not just complete short distance charging work.By taking smart mobile phone as an example, due to the special knot of mobile phone
Structure must install a battery in mobile phone, this battery is actually the bad dream of Radio Transmission Technology development --- work as hair
When battery is passed through in the magnetic field that ray circle emits, the metal inside battery just will produce induced current, and usually this is called
" vortex ", this vortex will produce the opposite magnetic field of magnetic direction that one generates with transmitting coil, balance out emission lines cast
At magnetic field so that induced voltage that receiving coil receives declines；And the vortex can be transformed into heat so that battery of mobile phone
It is very hot.Therefore, in order to realize the wireless transmission of mobile phone, one must be just placed between electric power receiving coil and battery of mobile phone
The device of " every metal " stops the magnetic line of force, and the magnetic line of force is avoided to reach in battery.Conventional technique uses a high permeability
Ferrite does this " every metal " device.But later studies have found that, due to the charge frequency range in Qi rechargeable standards
Between 100-200KHz, this section uses amorphous, the nanocrystalline effect as electromagnetic shielding piece to be better than ferrite.Therefore Samsung
The receiving terminal of S6 wireless chargings just use Amotech offer amorphous electromagnetic shielding chip technology, charge efficiency reach 70% with
On, Samsung S7 has continued wireless charging technology, by nanocrystalline as wireless charging electromagnetic shielding piece, integrates NFC, MST and WPC work(
It can be in one.
The constantly improve of charge efficiency is all target that wireless charging industry is chased all the time, and nowadays people pass through oneself
Technology and structure design so that mobile phone wireless charge efficiency is improved on the basis of Amotech technologies, simultaneously
Thickness can be done thinner.Patent document WO2013095036A1, WO2014104816, WO201437151A1 and
WO2014092500A1 mentions amorphous lamination, Mechanical Crushing and heat treatment process, and when pressing makes glue fill up the gap of fragment, from
And increase magnetic resistance, eddy-current loss is reduced, and then improve charge efficiency.
The above patent be although already mentioned above reduce magnetic loss method, but its process can not play completely it is such
The optimal effectiveness of mode.Please refer to Fig. 3, conventional wireless charges the composite structure of receiving terminal coil 1 and magnetic material, this structure
Advantage is to prepare simply, convenient for assembling, the disadvantage is that shielding and the magnetic conduction effect of shielding piece, power transmission effect cannot be played completely
Rate cannot accomplish ultimate attainment.In conclusion the coil ＆ magnetic material laminated construction that existing wireless charging electromagnetic shielding piece uses,
Charge efficiency is relatively low；In addition, existing shielding chip architecture cannot play the shielding properties of soft magnetic materials completely, cannot be satisfied to apply needs
It asks.
Invention content
The technical problem to be solved in the present invention is that in view of the deficiencies of the prior art, coil can be embedded in by providing one kind
Inside permeability magnetic material, and then the wireless charging transmitting-receiving module and its preparation process realized power transmission, improve power transmission efficiency.
In order to solve the above technical problems, the present invention adopts the following technical scheme that.
A kind of wireless charging transmitting-receiving module preparation process comprising have the following steps：Step S1, electromagnetic wave shielding sheet material
Prepare：Prepare Alperm band；Step S2, heat treatment：It, later will volume by Alperm strip coil around to pre-set dimension
Alperm band after, which is put into heat-treatment furnace, to be heat-treated；Step S3, covers one side glue：Using laminating machine to heat at
Alperm band after reason carries out single-side coating, and the protective film with one side glue is attached to Alperm band table
Face；Step S4 is patterned processing using laser cutting or chemical etching treatment process to Alperm band；Step
S5 covers glue again：The surface for not covering glue in step S4 treated Alperm bands is covered again using laminating machine
Glue；Step S6, adhesive lamination：Alperm band is bonded to the default number of plies successively, the magnetic sheet for later forming fitting carries out
Lamination, obtains ultra-thin magnetic sheet；Step S7 is punched out the obtained magnetic sheets of step S6, obtains the magnetic sheet of pre-set dimension；Step
Magnetic sheet after step S6 punchings is bonded, is assembled later with coil so that magnetic sheet is located at same with coil by S8 successively
In plane, obtain receiving and dispatching module based on the wireless charging of coil and magnetic sheet.
Preferably, in the step S1, the Alperm band is high magnetic conducting nanocrystalline alloy either Co bases, Ni
Base, Fe-Ni bases, Fe-Co bases, Fe-Co-Ni base Alperm.
Preferably, in the step S2, in vacuum or full of nitrogen state in the heat-treatment furnace.
Preferably, in the step S3, the Alperm band after heat treatment is carried out using the roll-to-roll adhesive process that covers
Single-side coating.
Preferably, in the step S5, using printing coating method to do not covered in Alperm band the surface of glue into
Row covers glue again.
Preferably, in the step S8, when assembling, by the magnetic sheet longitudinal arrangement, and the magnetic sheet is set to coil
Inside, outside or inside and outside.
A kind of wireless charging transmitting-receiving module prepared using above-mentioned technique comprising have coil, the adjacent of the coil
Equipped with magnetic sheet, and the magnetic sheet is generally aligned in the same plane with the coil.
Preferably, the magnetic sheet be set to the inside of coil, outside or inside and outside, and the magnetic sheet is in longitudinal arrangement.
Preferably, the minimum thickness of the magnetic sheet is 0.01mm.
Preferably, the magnetic sheet is -0.2mm~0.2mm compared to the thickness difference of coil.
Wireless charging disclosed by the invention receives and dispatches module preparation process, and coil is embedded into permeability magnetic material, is carrying out nothing
When micro USB electricity, the font structure that returns around coil makes the magnetic line of force be deflected, and the access for being easier to magnetic conduction is provided for the magnetic line of force,
So that the magnetic line of force is fully gathered, reduce leakage field, charge efficiency is centainly promoted.Compared to existing technologies, the present invention is on side
Add one layer of annular magnetic sheet above edge magnetic sheet, utilizes magnetic sheet herein to collect the magnetic line of force dissipated so that magnetic field is according to annular magnetic
Piece circulates, and avoids excessive leakage field, to promote charge efficiency.
Description of the drawings
Fig. 1 is the flow chart that wireless charging of the present invention receives and dispatches module preparation process.
Fig. 2 is to receive and dispatch modular structure schematic diagram using wireless charging prepared by present invention process.
Fig. 3 is the structural schematic diagram that wireless charging receives and dispatches module in the prior art.
Specific implementation mode
The present invention is described in more detail with reference to the accompanying drawings and examples.
The invention discloses a kind of wireless chargings to receive and dispatch module preparation process, please refers to Fig. 1 comprising have the following steps：
Step S1, electromagnetic wave shielding sheet material prepare：Prepare Alperm band；
Step S2, heat treatment：By Alperm strip coil around to pre-set dimension, later by the Alperm after winding
Band is put into heat-treatment furnace and is heat-treated；
Step S3, covers one side glue：Single-side coating is carried out to the Alperm band after heat treatment using laminating machine, and will
Protective film with one side glue is attached to Alperm strip surface；
Step S4 is patterned processing using laser cutting or chemical etching treatment process to Alperm band；
Step S5, covers glue again：Using laminating machine to not covering the table of glue in step S4 treated Alperm bands
Glue is covered again in face；
Step S6, adhesive lamination：Alperm band is bonded to the default number of plies, the magnetic sheet for later forming fitting successively
It is laminated, obtains ultra-thin magnetic sheet；
Step S7 is punched out the obtained magnetic sheets of step S6, obtains the magnetic sheet of pre-set dimension；
Magnetic sheet after step S6 punching is bonded, is assembled later with coil by step S8 successively so that magnetic sheet and
In coil is generally aligned in the same plane, obtain receiving and dispatching module based on the wireless charging of coil and magnetic sheet.
As a preferred method, in the step S1, the Alperm band be high magnetic conducting nanocrystalline alloy or
Person is Co bases, Ni bases, Fe-Ni bases, Fe-Co bases, Fe-Co-Ni base Alperm.In the step S2, the heat-treatment furnace
It is interior to be in vacuum or be full of nitrogen state.In the step S3, the high magnetic conduction after heat treatment is closed using the roll-to-roll adhesive process that covers
Gold ribbon material carries out single-side coating.In the step S5, using printing coating method to not covering the table of glue in Alperm band
Glue is covered again in face.In the step S8, when assembling, by the magnetic sheet longitudinal arrangement, and the magnetic sheet is set to coil
Inside, outside or inside and outside.
Above-mentioned wireless charging receives and dispatches module preparation process, and coil is embedded into permeability magnetic material, when carrying out wireless charging,
The font structure that returns around coil makes the magnetic line of force be deflected, and the access for being easier to magnetic conduction is provided for the magnetic line of force so that magnetic force
Micro USB point is gathered, and leakage field is reduced, and charge efficiency is centainly promoted.Compared to existing technologies, the present invention is in edge magnetic on piece
Face adds one layer of annular magnetic sheet, the magnetic line of force of diverging is collected using magnetic sheet herein so that flowed according to annular magnetic sheet in magnetic field
It is logical, excessive leakage field is avoided, to promote charge efficiency.
In order to preferably describe technical scheme of the present invention, the invention also discloses the wireless chargings prepared using above-mentioned technique
Electricity transmitting-receiving module, please refers to Fig. 2, which includes coil 1, and the adjacent of the coil 1 is equipped with magnetic sheet 2, and the magnetic sheet 2
It is generally aligned in the same plane with the coil 1.
Further, the magnetic sheet 2 be set to the inside of coil 1, outside or inside and outside, and the magnetic sheet 2 is in longitudinal
Arrangement.
About dimensional configurations, the minimum thickness of the magnetic sheet 2 is 0.01mm.The magnetic sheet 2 compares the thickness difference of coil 1
For -0.2mm~0.2mm.
Wireless charging transmitting-receiving module preparation process disclosed by the invention and wireless charging receive and dispatch module, actual application
In can refer to following examples：
First, select wireless charging magnetic conduction sheet, this shielding piece material can be soft magnetic ferrite (Mn-Zn, Ni-Zn,
Mg-Zn), the soft magnetic materials such as powder core, permalloy, amorphous/nanocrystalline magnetic conduction sheet.Since soft magnetic ferrite and powder core can be with
It is prepared using compacting sintering moulding process, and due to saturation magnetic strength and magnetic conductivity limitation, to high power transmission situation, is needed
Larger/thicker size can just be met the requirements, and power electronics industry forces the ultrathin of product, the unremitting pursuit of high frequency
We, which have to choose and develop more advantageous shielding material, uses, thus here not with ferrite and powder core into
Row explanation, but ferrite and powder core are equally applicable to back font structure, and situation charge efficiency has promotion on year-on-year basis, this Back Word
The magnetic material of type structure can be a kind of material, can also be 2 kinds or the collocation of two or more magnetic material.
The present embodiment is illustrated with amorphous/nanocrystalline magnetic conduction sheet, about the part preparation process of magnetic conduction sheet, please refers to Shen
Please number for " CN201521079951.9 ", entitled " a kind of wireless charging electromagnetic shielding piece " Chinese patent literature, module
Concrete technology flow process it is as follows：
Step a, the preparation stage of electromagnetic wave shielding sheet is prepared：Amorphous, nanocrystalline strip, high magnetic conduction band needed for preparing
(high magnetic property alloy can be certain high magnetic conducting nanocrystalline alloy, can also be Co bases, Ni bases, Fe-Ni bases, Fe-Co bases,
Fe-Co-Ni base Alperm.It has the characteristics that magnetic conductivity is high, loss is lower), prepare relevant production units, prepares adherency
Glue (one side glue, double faced adhesive tape, print tape) prepares ferrimagnetism piece, prepares graphite heat radiation fin.
Step b, it is heat-treated：Amorphous, nanocrystalline strip are wound to certain size as requested.Later by winding
Nanocrystalline strip, Alperm band are placed in heat-treatment furnace and are heat-treated, for the effect of material heat treatment, in heat-treatment furnace
It can be at vacuum or be full of nitrogen state.Specific heat-treatment technology method refers to that application No. is " 201510990249.6 ", names
A kind of referred to as Chinese patent literature of " amorphous or nanocrystalline material heat treatment method in magnetic screen "；
Step c, one side glue is covered：The band being heat-treated is subjected to single-side coating using overlay film machine, can be used roll-to-roll
The adhesive process that covers carry out covering glue.Protective film with one side glue is attached to the surface of heat treated band, as in next step
Pressing former material；
Step d, magnetic sheet graphical treatment：Using laser cutting or chemical etching treatment process, illustrates and refer to Shen
It please be number for " 201510977190.7 ", entitled " a kind of wireless charging be electromagnetically shielded the preparation method of piece and be electromagnetically shielded piece "
Chinese patent literature；
Step e, glue is covered again：In step d laser graphicsization treated do not cover glue strip surface use laminating machine
Device is covered glue again.It is printing coating method to cover adhesive process, by designing shape, the size of colloid, by printing coating
Method, the magnetic sheet surface after graphical treatment carry out covering glue；
Step f, adhesive lamination：Band in step d is fitted to another band on one side with glue does not have the surface of glue, so
According to the number of plies for requiring to be bonded into needs, then carry out lamination process.The magnetic sheet posted is laminated, ultra-thin magnetic is obtained
Piece；
Step g, the magnetic sheet described in step f is required to be punched out according to size, obtains the magnetic sheet of desired size；
Step h, the magnetic sheet being punched is bonded to each other, and is assembled with coil, obtain coil ＆ shielding piece moulds
Group is used for wireless charging transmitting terminal and receiving terminal.
About the experimental data of above-described embodiment, it is using the nanocrystalline trade mark：1k107, ingredient are
Fe72Cu1Nb2Mo1V1Si15.5B7Co0.2P0.3 (atomic ratio)；
Parameter configuration one：
As shown above, it is prepared into the electromagnetic shielding piece of structure shown in structure one, structure two by nanometer crystal alloy, and with
Coil is assembled, and carries out electric performance test to it later.
As can be seen from the table：Using the magnetic sheet of rectangular-ambulatory-plane structure two, structure compared one folds 3 layers below rectangular-ambulatory-plane
The inductance higher of structure (structure two), Q value biggers.
Parameter configuration two：
As shown above, (embedding using the shielding piece of structure two in the case of same thickness by charge efficiency comparative analysis
Enter 3 layers of lamination), charge efficiency structure compared one (3 layers of lamination) is higher by 4%, and the charging of structure two (embedded 2 layers of lamination)
Efficiency is also higher by structure one (3 layers of lamination) 2.05%.
In conclusion electromagnetic shielding piece and coil module that damascene structures obtain, with the high advantage of charge efficiency, together
When can reach the charge efficiency of traditional structure (structure one) in the case of relatively thin, you can meet ultrathin requirement.Based on upper
State characteristic so that electromagnetic shielding piece prepared by present invention process and coil module have the following advantages：First, the present invention according to
Physical model provides more optimized structure for magnetic line of force transmission, and charge efficiency is further enhanced, secondly, in the case of year-on-year,
Module integral thickness can be reduced, structure is more reasonable.It can be seen that wireless charging of the present invention receives and dispatches module preparation process wireless
Charging equipment field achieves progress outstanding, is suitble to promote and apply in the art, and have preferable application prospect.
The above is preferred embodiments of the present invention, is not intended to restrict the invention, all technology models in the present invention
Interior done modification, equivalent replacement or improvement etc. are enclosed, should be included in the range of of the invention protect.
Claims (10)
1. a kind of wireless charging receives and dispatches module preparation process, which is characterized in that including having the following steps：
Step S1, electromagnetic wave shielding sheet material prepare：Prepare Alperm band；
Step S2, heat treatment：By Alperm strip coil around to pre-set dimension, later by the Alperm band after winding
It is put into heat-treatment furnace and is heat-treated；
Step S3, covers one side glue：Single-side coating is carried out to the Alperm band after heat treatment using laminating machine, and will be carried
The protective film of one side glue is attached to Alperm strip surface；
Step S4 is patterned processing using laser cutting or chemical etching treatment process to Alperm band；
Step S5, covers glue again：Using laminating machine to do not covered in step S4 treated Alperm bands the surface of glue into
Row covers glue again；
Step S6, adhesive lamination：Alperm band is bonded to the default number of plies successively, the magnetic sheet for later forming fitting carries out
Lamination, obtains ultra-thin magnetic sheet；
Step S7 is punched out the obtained magnetic sheets of step S6, obtains the magnetic sheet of pre-set dimension；
Magnetic sheet after step S6 punchings is bonded, is assembled later with coil so that magnetic sheet and coil by step S8 successively
In being generally aligned in the same plane, obtain receiving and dispatching module based on the wireless charging of coil and magnetic sheet.
2. wireless charging as described in claim 1 receives and dispatches module preparation process, which is characterized in that described in the step S1
Alperm band is that high magnetic conducting nanocrystalline alloy either Co bases, Ni bases, Fe-Ni bases, Fe-Co bases, Fe-Co-Ni bases are high
Permeability alloys.
3. wireless charging as described in claim 1 receives and dispatches module preparation process, which is characterized in that described in the step S2
In vacuum or full of nitrogen state in heat-treatment furnace.
4. wireless charging as described in claim 1 receives and dispatches module preparation process, which is characterized in that in the step S3, utilize
The roll-to-roll adhesive process that covers carries out single-side coating to the Alperm band after heat treatment.
5. wireless charging as described in claim 1 receives and dispatches module preparation process, which is characterized in that in the step S5, utilize
Printing coating method is covered glue again to the surface for not covering glue in Alperm band.
6. wireless charging as described in claim 1 receives and dispatches module preparation process, which is characterized in that in the step S8, assembling
When, by the magnetic sheet longitudinal arrangement, and the magnetic sheet be set to the inside of coil, outside or inside and outside.
7. a kind of wireless charging prepared using any one of claim 1 to 6 technique receives and dispatches module, which is characterized in that packet
Included coil (1), the adjacent of the coil (1) is equipped with magnetic sheet (2), and the magnetic sheet (2) with the coil (1) positioned at same
Plane.
8. wireless charging as claimed in claim 7 receives and dispatches module, which is characterized in that the magnetic sheet (2) is set to coil (1)
Inside, outside or inside and outside, and the magnetic sheet (2) be in longitudinal arrangement.
9. wireless charging as claimed in claim 7 receives and dispatches module, which is characterized in that the minimum thickness of the magnetic sheet (2) is
0.01mm。
10. wireless charging as claimed in claim 7 receives and dispatches module, which is characterized in that the magnetic sheet (2) is compared to coil (1)
Thickness difference is -0.2mm~0.2mm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110138104A (en) * | 2019-06-14 | 2019-08-16 | 青岛大学 | A kind of composite shielding layer for wireless power transmission magnetic coupler |
| CN111431239A (en) * | 2020-04-20 | 2020-07-17 | 蓝沛光线（上海）电子科技有限公司 | Wireless charging module and preparation method thereof |
| CN112768218A (en) * | 2020-12-22 | 2021-05-07 | 信维通信（江苏）有限公司 | Low-loss magnetic-isolating sheet and preparation method thereof |
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Application publication date: 20180824 |