CN207909682U - A kind of wireless charging receiving coil - Google Patents
A kind of wireless charging receiving coil Download PDFInfo
- Publication number
- CN207909682U CN207909682U CN201820302728.3U CN201820302728U CN207909682U CN 207909682 U CN207909682 U CN 207909682U CN 201820302728 U CN201820302728 U CN 201820302728U CN 207909682 U CN207909682 U CN 207909682U
- Authority
- CN
- China
- Prior art keywords
- wireless charging
- substrate
- charging receiving
- wire coil
- receiving coil
- 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.)
- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of wireless charging receiving coils, including an isolation material substrate, and are separately positioned on the wire coil of the substrate tow sides, and via hole is provided on substrate, and the wire coil of the substrate both sides is electrically connected by via hole；The wire coil surface is provided with insulating coating, and the insulating coating is Parylene (Parylene) film that the wire coil surface is coated in using vacuum vapor deposition technique；The substrate connect feeder panel with wire coil including one, and feed panel surface is coated with metal layer；The purpose of this utility model is that larger be difficult to cover between coil side wall winding wire side wall of covering film thickness that solve the problem of to insulate in the prior art forms hollow defect.
Description
Technical field
The utility model is related to wireless charging field more particularly to a kind of wireless charging receiving coils.
Background technology
The free space that wireless charging is given in some mobile terminals with receiving coil is limited, to obtain more preferable property
It can, it is desirable to which its wire coil thickness is thicker, and coil line-spacing is narrower.Current mobile terminal wireless charging is usually wrapped with receiving coil
Include 1, as wire coil carrier PI (polyimides) film；2, each one group of copper planar spiral winding in PI films both sides；3、
PI insulation cover films or ink type solder mask insulating films are respectively covered on the outside of the wire coil of both sides.Wherein there is following ask
Topic：The thickness of PI insulation cover films is larger, occupies the thickness space of coil；And PI insulation cover films are difficult to cover coil side wall,
Hollow defect is formed between winding wire side wall, the pin hole or the side leakage of cover film edge that environmental humidity or salt fog can be through PI films ooze
Enter, there are hidden danger in terms of reliability；It is hollow between winding wire side wall to reduce, it has to which that spread loop conductor spacing causes
It can be reduced with coil in unit space, influence charging effect.On the other hand, there is hollow defect between solution winding wire side wall
Problem, conventional method are to be covered using ink type solder mask, but the thickness of this coating is even greater than PI insulation
The thickness of cover film, to occupy the space of wire coil.
Utility model content
The utility model provides a kind of wireless charging receiving coil, is difficult to cover to solve winding wire gap in the prior art
Lid, the larger problem of insulation covering film thickness.
A kind of wireless charging receiving coil, including an insulating substrate, and it is separately positioned on the substrate tow sides
Wire coil is provided with via hole on the substrate, and the wire coil of the substrate both sides is electrically connected by via hole；It is described
Wire coil surface is provided with insulating coating, and the insulating coating is parylene film.
In some embodiments, the material of the parylene film is any one in N-type, c-type or D types
Kind.
In some embodiments, the thickness of the parylene film is 0.1-100 microns.
In some embodiments, the parylene film covers the wire coil, the wire coil
In gap and the substrate around the wire coil.
In some embodiments, the substrate is Kapton.
In some embodiments, a feeder panel, the feeder panel and the metal wire are provided on the substrate
Circle connection, the feed panel surface are coated with metal layer.
In some embodiments, the metal layer includes nickel coating and gold plate, and the gold plate setting exists
On the nickel coating.
In some embodiments, the thickness of the nickel coating is 1-7 microns, and the thickness of the gold plate is less than
0.05 micron.
In some embodiments, the metal layer is tin coating.
In some embodiments, the thickness of the tin coating is 5-10 microns.
In some embodiments, the metal layer is nickel coating.
In some embodiments, the thickness of the nickel coating is 2-5 microns.
By using above-mentioned technical proposal, it is made to have the advantages that compared with prior art：
(1) this programme applies a layer insulating on wire coil surface using vacuum vapor deposition technique, which is
Parylene film, the process directly can crystallize to form solid film in wire coil surface aggregate, form film
Process do not have liquid phase tissue appearance, easily formed thickness it is uniform, the smooth pin-hole free films in surface, Yin Qigao around plating property spy
Point will not form hollow defect between wire coil, to solve the problems, such as that tradition covers hollow defect.
(2) the parylene film thickness smaller used in this programme can effectively be coil or other electronics member devices
Part saves use space.
(3) plated film can be used different types of raw material and carry out overlay film to carrying out coil, to meet different use environments
Demand, to expand the use scope of equipment.
Description of the drawings
Fig. 1 is a kind of positive structure schematic of wireless charging receiving coil of the utility model；
Fig. 2 is a kind of structure schematic diagram of wireless charging receiving coil of the utility model.
Label declaration
3- wire coil components, 3.1- substrates, 3.2- wire coils, 3.21- front coils,
3.22- via holes, 3.23- feeder panels, 3.24- backside loops, 3.3- insulating coatings.
Specific implementation mode
The utility model is described in further details below in conjunction with the drawings and specific embodiments, passes through following explanation and power
The advantages of sharp claim, the utility model and feature will be apparent from, it should be noted that, attached drawing is all made of very simplified form
And non-accurate ratio is used, only to purpose that is convenient, lucidly aiding in illustrating the utility model embodiment.
It please refers to Fig.1 and Fig. 2, the utility model provides a kind of wireless charging receiving coil, including an isolation material substrate
3.1, and the wire coil 3.2 that is respectively set on substrate, wire coil 3.2 include the frontal line being arranged in 3.1 both sides of substrate
Circle 3.21 and backside loop 3.24, are provided with via hole 3.22, the wire coil 3.2 of substrate both sides passes through via hole on substrate
3.22 being electrically connected；3.2 surface of the wire coil is provided with insulating coating 3.3, and the insulating coating 3.3 is using vacuum gas
Phase depositing operation is coated in Parylene (Parylene) film on 3.2 surface of wire coil；Substrate 3.1 includes one and metal
The feeder panel that coil 3.2 connects, 3.23 surface of feeder panel is coated with metal layer.
Vacuum vapor deposition process is broadly divided into three steps：1. solid feed is placed in the space of 120 DEG C of vacuum, distil
At gaseous state；2. after solid feed distillation is gaseous state, space temperature is adjusted to 650 DEG C, gaseous feed is made to be cracked into reaction
Active monomer；3. gaseous monomer is made to deposit and polymerize on 3.2 surface of wire coil at room temperature.
Specifically, Parylene is roughly divided into three classes, respectively N-type, c-type or D types by molecular structure, wherein N-type
Parylene is the high polymer of paraxylene, and feature is that can penetrate into fine crack or tiny blind hole in film forming, in the table of plated body
Face forms coating, and material dielectric constant and dissipation factor are small, and small with frequency increase variation, and cost is relatively low, has extensive
Applicability；C-type Parylene is that there are one chlorine atom, feature is in film forming to water for addition on the side ring of paraxylene chain
Molecule and corrosive gas have very low transmission；D types Parylene is on the side ring of paraxylene chain there are two chlorine atom,
Feature is that opposite N-type and c-type are resistant to higher temperature environment in film forming；Raw material used in plated film can be used according to specific
Environment determines, if for example, the often operation under water of mobile terminal need, selects D-shaped Parylene materials to carry out wire coil
Coating processing；If higher to cost requirement, it is desirable to by cost control in relatively low situation, N shape Parylene materials pair can be selected
Wire coil carries out coating processing；If need to only meet routine use, C-shaped Parylene materials is selected to carry out overlay film.
Specifically, substrate material is polyimides (PI) film, and the feeder panel plating 3.23 on substrate 3.1 is coated with low-resistivity
Metal layer, nickel of a layer thickness at 1 micron to 7 microns will be plated on feeder panel 3.23 first, plates one layer on the surface of nickel later
Wire coil on substrate 3.1 is connected on the feeder panel 3.23 with metal coating, plays by the gold thick less than 0.05 micron
It is anti-oxidation, improve the effect of electric conductivity.Certainly, the coating of feeder panel 3.23 is not limited to this, can also independent nickel plating or tin
Deng other low resistance anti-oxidation metals, and thickness of coating is adjusted as the case may be.
The embodiment of the utility model is explained in detail above in association with attached drawing, but the utility model is not limited to
The embodiment above, even if various changes can be made to the utility model, if these variations belong to the utility model claims
And its within the scope of equivalent technologies, then still fall among the scope of protection of the utility model.
Claims (12)
1. a kind of wireless charging receiving coil, which is characterized in that including an insulating substrate, and be separately positioned on the substrate just
The wire coil on anti-two sides is provided with via hole on the substrate, and the wire coil of the substrate both sides is electrical by via hole
Connection；The wire coil surface is provided with insulating coating, and the insulating coating is parylene film.
2. a kind of wireless charging receiving coil according to claim 1, which is characterized in that the parylene film
Material is any one in N-type, c-type or D types.
3. a kind of wireless charging receiving coil according to claim 1, which is characterized in that the parylene film
Thickness is 0.1-100 microns.
4. a kind of wireless charging receiving coil according to claim 1, which is characterized in that the parylene film covers
Cover the wire coil, the gap in the wire coil and the substrate around the wire coil.
5. a kind of wireless charging receiving coil according to claim 1, which is characterized in that the substrate is that polyimides is thin
Film.
6. a kind of wireless charging receiving coil according to claim 1, which is characterized in that be provided with a feedback on the substrate
Electroplax, the feeder panel are connect with the wire coil, and the feed panel surface is coated with metal layer.
7. a kind of wireless charging receiving coil according to claim 6, which is characterized in that the metal layer includes nickel coating
And gold plate, the gold plate are arranged on the nickel coating.
8. a kind of wireless charging receiving coil according to claim 7, which is characterized in that the thickness of the nickel coating is 1-
7 microns, the thickness of the gold plate is less than 0.05 micron.
9. a kind of wireless charging receiving coil according to claim 6, which is characterized in that the metal layer is tin coating.
10. a kind of wireless charging receiving coil according to claim 9, which is characterized in that the thickness of the tin coating is
5-10 microns.
11. a kind of wireless charging receiving coil according to claim 6, which is characterized in that the metal layer is nickel coating.
12. a kind of wireless charging receiving coil according to claim 11, which is characterized in that the thickness of the nickel coating is
2-5 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820302728.3U CN207909682U (en) | 2018-03-05 | 2018-03-05 | A kind of wireless charging receiving coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820302728.3U CN207909682U (en) | 2018-03-05 | 2018-03-05 | A kind of wireless charging receiving coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207909682U true CN207909682U (en) | 2018-09-25 |
Family
ID=63557878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820302728.3U Expired - Fee Related CN207909682U (en) | 2018-03-05 | 2018-03-05 | A kind of wireless charging receiving coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207909682U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360729A (en) * | 2018-10-19 | 2019-02-19 | 上海安费诺永亿通讯电子有限公司 | A kind of production method and structure of planar spiral winding |
| CN111952056A (en) * | 2020-09-14 | 2020-11-17 | 苏州安洁科技股份有限公司 | Circular winding wireless charging coil |
-
2018
- 2018-03-05 CN CN201820302728.3U patent/CN207909682U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360729A (en) * | 2018-10-19 | 2019-02-19 | 上海安费诺永亿通讯电子有限公司 | A kind of production method and structure of planar spiral winding |
| CN109360729B (en) * | 2018-10-19 | 2021-03-23 | 上海安费诺永亿通讯电子有限公司 | Manufacturing method and structure of planar spiral coil |
| CN111952056A (en) * | 2020-09-14 | 2020-11-17 | 苏州安洁科技股份有限公司 | Circular winding wireless charging coil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180925 |