CN107658117A - A kind of Wireless charging coil and preparation method thereof - Google Patents
A kind of Wireless charging coil and preparation method thereof Download PDFInfo
- Publication number
- CN107658117A CN107658117A CN201710918640.4A CN201710918640A CN107658117A CN 107658117 A CN107658117 A CN 107658117A CN 201710918640 A CN201710918640 A CN 201710918640A CN 107658117 A CN107658117 A CN 107658117A
- Authority
- CN
- China
- Prior art keywords
- film
- coil
- wireless charging
- copper foil
- hole
- 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
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 31
- 239000011889 copper foil Substances 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- 229920002799 BoPET Polymers 0.000 claims description 3
- 241000237858 Gastropoda Species 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 5
- 239000010408 film Substances 0.000 description 70
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
-
- 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
- H01F41/04—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 for manufacturing coils
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a kind of Wireless charging coil, including film and the coil layer for being covered in film upper and lower surface, through hole is offered on the film, the wire of adjacent two coil layers end is compressed and welded together in through hole.The present invention also provides a kind of Wireless charging coil preparation method.This Wireless charging coil opened hole on film, the wire of adjacent two coil layers end is compressed and welded together in through hole, the effective usable floor area of wire of coil layer will not so be reduced, also coil will not be lost, to the Resistance Influence very little that coil is overall, wireless charging speed is effectively lifted, material cost can be reduced, and manufacture craft is simple.
Description
Technical field
The present invention relates to wireless power transmission field, more particularly to a kind of Wireless charging coil and preparation method thereof.
Background technology
In mobile phone wireless charging system, receiving coil receives transmitting terminal hair by way of resonance or electromagnetic induction
The electromagnetic energy gone out, and the voltage or electric current for being available for load to use are converted to through related circuit.
Because the end product use intensity such as mobile phone is big, more and more higher is required to charging rate.So wireless charging system
Transmitting and receive power and just must accordingly improve, traditional wireless charging receiving coil uses FPC technique productions, and thickness can be with
Accomplish it is relatively thin, but there is also some shortcomings, such as：Single or multiple lift FPC lead connects coil body when making by aperture
Complex process, referring to Fig. 1, coil layer and film are both needed to punch, and accumulate one layer of conductive carbon film, the conductive carbon in hole in inner hole deposition
One layer of copper of film electroplating surface, finally it could connect two layers of coil；Individual layer FPC wiring areas are small, but are to be able to matched coil
Body is produced, it is necessary to the copper foil of large area be eroded, raw material availability is low；Connected two layers using aperture or during multilayer, certainly will
Reduce the effective usable floor area of wire at aperture position, this provides for improved the resistance that coil is overall, is influenceed to reduce, it is necessary to the greatest extent may be used
Hole diameter can be reduced, the smaller processing cost in hole is bigger.In order to lift wireless charging speed, coil thickness certainly will be improved, with
Coil loss is reduced, influence of the thicker problem above of thickness to production cost and performance is bigger.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the invention provides a kind of Wireless charging coil and preparation method thereof,
Its manufacture craft is simple, and wireless charging speed is fast, and production cost is low.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of Wireless charging coil, including film and the coil layer for being covered in film upper and lower surface, open up on the film
There is through hole, the wire of adjacent two coil layers end is compressed and welded together in through hole.
As the improvement of above-mentioned technical proposal, the coil layer is in snail shape.
As the improvement of above-mentioned technical proposal, the film is PI films or PET film.
A kind of Wireless charging coil preparation method, this method include：
Step 1: prepare film and copper foil, the opened hole and upper and lower surface in film pastes copper foil on film in advance, or
Person first pastes one layer of copper foil, the opened hole on film in the one side of film, and film simultaneously pastes another layer of copper foil in addition, and will
Film and copper foil are cut into sheet；
Step 2: copper foil is chemically carried out into outer surface processing, removing is dirty, and coarse surface；
Step 3: there is design on copper foil outer surface patch dry film and the film, or silk-screen wet film, the film or silk-screen wet film
The circuit of completion；
Step 4: being exposed to dry film and the film or silk-screen wet film, the circuit pack on the film or silk-screen wet film is exposing
There occurs polymerisation after light, turn into the resist film of etching；
Step 5: the dry film at unreacted position and the film or silk-screen wet film are corroded using sodium carbonate or solution of potassium carbonate
Fall, expose the copper foil that needs etch away；
Step 6: eroded the copper foil exposed using chemical reagent, it is remaining to be covered by the resist film of generation polymerisation
The region of lid is formed the coil needed；
Step 7: the resist film reaction thing remained on coil is washed using highly basic；
Step 8: by above and below through hole the coil of both sides compress and weld together.
As the improvement of above-mentioned technical proposal, the welding manner in step 8 is ultrasonic bonding, laser welding or tin
Weldering.
Beneficial effects of the present invention have：
Only opened hole, the wire of adjacent two coil layers end on film are compressed and welded in through hole this Wireless charging coil
It is connected together, will not so reduces the effective usable floor area of wire of coil layer, coil will not also be lost, to the resistance that coil is overall
Very little is influenceed, wireless charging speed is effectively lifted, material cost can be reduced, and manufacture craft is simple.
Brief description of the drawings
Below in conjunction with the accompanying drawings and specific embodiment the invention will be further described, wherein：
Fig. 1 is the sectional view of conventional wireless charge coil；
Fig. 2 is the structural representation of the embodiment of the present invention；
Fig. 3 is the partial cutaway schematic of center line of embodiment of the present invention ring layer before welding；
Fig. 4 is the partial cutaway schematic of center line of embodiment of the present invention ring layer after welding.
Embodiment
Referring to Fig. 1, the Wireless charging coil of traditional structure includes film and is covered in the coil layer 2 of the upper and lower surface of film 1,
Coil layer 2 and film 1 offer through hole 3 at one, and one layer of conductive carbon film, the conductive carbon film in through hole 3 are deposited in through hole 3
One layer of copper of electroplating surface, it is final to connect two coil layers 2.
With further reference to Fig. 2, Fig. 3 and Fig. 4, a kind of Wireless charging coil of the invention, including film 1 and it is covered in film
The coil layer 2 of 1 upper and lower surface, through hole 3 is offered on the film 1, and coil layer 2 has no perforate, the adjacent end of two coil layer 2
Wire compress and weld together at through hole 3, in the present embodiment, be connected in series between two coil layers 2, can with parallel connection even
Connect, the present embodiment is not limited to the form of thin film and two layers of coil layer 2, is also applied for n-layer film and n+1 layer line ring layers
2 form.
Specifically, the coil layer 2 is in snail shape, and the film 1 is PI films or PET film, wireless charging of the invention
For electric coil is compared with traditional structure, the only perforate on film 1, the effective usable floor area of wire of coil layer 2 will not be reduced, also will not
Coil is lost, to the Resistance Influence very little that coil is overall, effectively lifts wireless charging speed, material cost can be reduced, and
And manufacture craft is simple.
A kind of Wireless charging coil preparation method, methods described are used to make above-mentioned Wireless charging coil, and this method is specific
Including：
Step 1: prepare film and copper foil, the opened hole and upper and lower surface in film pastes copper foil on film in advance, and
Film and copper foil are cut into sheet；
Step 2: above-mentioned copper foil is chemically carried out into outer surface processing, removing is dirty, and coarse surface；
Step 3: there is design on copper foil outer surface patch dry film and the film, or silk-screen wet film, the film or silk-screen wet film
The circuit of completion；
Step 4: being exposed to dry film and the film or silk-screen wet film, the circuit pack on the film or silk-screen wet film is exposing
There occurs polymerisation after light, turn into the resist film of etching；
Step 5: the dry film at unreacted position and the film or silk-screen wet film are corroded using sodium carbonate or solution of potassium carbonate
Fall, expose the copper foil that needs etch away；
Step 6: eroded the copper foil exposed using chemical reagent, it is remaining to be covered by the resist film of generation polymerisation
The region of lid is formed the coil needed；
Step 7: the resist film reaction thing remained on above-mentioned coil is washed using highly basic；
Step 8: by above and below through hole the coil of both sides compress and weld together.
In addition, in step 1, one layer of copper foil, the opened hole on film, film first can also be pasted in the one side of film
In addition simultaneously paste another layer of copper foil.Wherein, film can use laser or chemical method to remove membrane material, opened hole.If pasting
The opened hole on film in advance is covered before copper foil, in addition to using aforesaid way, membrane removal can also be gone using simple mechanical system
Material, opened hole.The present embodiment in step 3 into step 5, by the way of silk-screen wet film is pasted；Welding side in step 8
Formula can be ultrasonic bonding, laser welding or soldering, and the present embodiment uses ultrasonic bonding.
It is described above, the simply better embodiment of the present invention, but the present invention is not limited to above-described embodiment, as long as
It reaches the technique effect of the present invention with any same or similar means, should all belong to protection scope of the present invention.
Claims (5)
- A kind of 1. Wireless charging coil, it is characterised in that：Including film and the coil layer of film upper and lower surface is covered in, it is described thin Through hole is offered on film, the wire of adjacent two coil layers end is compressed and welded together in through hole.
- A kind of 2. Wireless charging coil according to claim 1, it is characterised in that：The coil layer is in snail shape.
- A kind of 3. Wireless charging coil according to claim 1, it is characterised in that：The film is PI films or PET film.
- A kind of 4. Wireless charging coil preparation method, it is characterised in that：Methods described is used to make any one of claim 1-3 institutes A kind of Wireless charging coil stated, this method include：Step 1: prepare film and copper foil, the opened hole and upper and lower surface in film pastes copper foil, Huo Zhexian on film in advance One layer of copper foil is pasted in the one side of film, the opened hole on film, film simultaneously pastes another layer of copper foil in addition, and by film Sheet is cut into copper foil；Step 2: copper foil is chemically carried out into outer surface processing, removing is dirty, and coarse surface；Step 3: on copper foil outer surface patch dry film and the film, or silk-screen wet film, the film or silk-screen wet film there is design to complete Circuit；Step 4: being exposed to dry film and the film or silk-screen wet film, the circuit pack on the film or silk-screen wet film is after exposure There occurs polymerisation, turn into the resist film of etching；Step 5: being eroded the dry film at unreacted position and the film or silk-screen wet film using sodium carbonate or solution of potassium carbonate, reveal Go out to need the copper foil etched away；Step 6: eroded the copper foil exposed using chemical reagent, what the remaining resist film by generation polymerisation covered Region is formed the coil needed；Step 7: the resist film reaction thing remained on coil is washed using highly basic；Step 8: by above and below through hole the coil of both sides compress and weld together.
- A kind of 5. Wireless charging coil preparation method according to claim 4, it is characterised in that：Welding in step 8 Mode is ultrasonic bonding, laser welding or soldering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710918640.4A CN107658117A (en) | 2017-09-30 | 2017-09-30 | A kind of Wireless charging coil and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710918640.4A CN107658117A (en) | 2017-09-30 | 2017-09-30 | A kind of Wireless charging coil and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107658117A true CN107658117A (en) | 2018-02-02 |
Family
ID=61116751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710918640.4A Pending CN107658117A (en) | 2017-09-30 | 2017-09-30 | A kind of Wireless charging coil and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107658117A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987094A (en) * | 2018-06-20 | 2018-12-11 | 深圳市信维通信股份有限公司 | The production method of Wireless charging coil |
| CN111724987A (en) * | 2019-03-19 | 2020-09-29 | 富士康(昆山)电脑接插件有限公司 | Preparation method of wireless charging coil |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4627565A (en) * | 1982-03-18 | 1986-12-09 | Lomerson Robert B | Mechanical bonding of surface conductive layers |
| JP2008015968A (en) * | 2006-07-10 | 2008-01-24 | Dainippon Printing Co Ltd | Conductive member for non-contact type data carrier and its manufacturing method and device |
| CN102414700A (en) * | 2009-04-28 | 2012-04-11 | 凸版印刷株式会社 | Antenna sheet, data carrier with non-contact ic, and method for producing antenna sheet |
| EP2980949A1 (en) * | 2014-08-01 | 2016-02-03 | J Touch Corporation | Thin-film coil component and charging apparatus and method for manufacturing the component |
| CN105405638A (en) * | 2015-12-28 | 2016-03-16 | 深圳顺络电子股份有限公司 | Coil manufacturing method, chip component and manufacturing method of chip component |
| CN106304668A (en) * | 2016-10-31 | 2017-01-04 | 安捷利电子科技（苏州）有限公司 | A kind of manufacture method using enhancement mode semi-additive process to make printed wiring board |
| CN107221424A (en) * | 2016-03-21 | 2017-09-29 | 三星电机株式会社 | The manufacture method and coil device of coil device |
-
2017
- 2017-09-30 CN CN201710918640.4A patent/CN107658117A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4627565A (en) * | 1982-03-18 | 1986-12-09 | Lomerson Robert B | Mechanical bonding of surface conductive layers |
| JP2008015968A (en) * | 2006-07-10 | 2008-01-24 | Dainippon Printing Co Ltd | Conductive member for non-contact type data carrier and its manufacturing method and device |
| CN102414700A (en) * | 2009-04-28 | 2012-04-11 | 凸版印刷株式会社 | Antenna sheet, data carrier with non-contact ic, and method for producing antenna sheet |
| EP2980949A1 (en) * | 2014-08-01 | 2016-02-03 | J Touch Corporation | Thin-film coil component and charging apparatus and method for manufacturing the component |
| CN105405638A (en) * | 2015-12-28 | 2016-03-16 | 深圳顺络电子股份有限公司 | Coil manufacturing method, chip component and manufacturing method of chip component |
| CN107221424A (en) * | 2016-03-21 | 2017-09-29 | 三星电机株式会社 | The manufacture method and coil device of coil device |
| CN106304668A (en) * | 2016-10-31 | 2017-01-04 | 安捷利电子科技（苏州）有限公司 | A kind of manufacture method using enhancement mode semi-additive process to make printed wiring board |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987094A (en) * | 2018-06-20 | 2018-12-11 | 深圳市信维通信股份有限公司 | The production method of Wireless charging coil |
| CN111724987A (en) * | 2019-03-19 | 2020-09-29 | 富士康(昆山)电脑接插件有限公司 | Preparation method of wireless charging coil |
| CN111724987B (en) * | 2019-03-19 | 2023-07-18 | 富士康(昆山)电脑接插件有限公司 | Preparation method of wireless charging coil |
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| 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 |
Application publication date: 20180202 |
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| RJ01 | Rejection of invention patent application after publication |