CN206758245U - A kind of induction coil structure for wireless charging device - Google Patents
A kind of induction coil structure for wireless charging device Download PDFInfo
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- CN206758245U CN206758245U CN201720698678.0U CN201720698678U CN206758245U CN 206758245 U CN206758245 U CN 206758245U CN 201720698678 U CN201720698678 U CN 201720698678U CN 206758245 U CN206758245 U CN 206758245U
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- wire
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- wireless charging
- induction coil
- coil
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Abstract
The utility model discloses a kind of induction coil structure for wireless charging device, and it includes wire, and the wire coiling forms coil, and the surface of the wire offers slit, length direction extension of the slit along wire.In induction coil structure disclosed in the utility model, because the surface of wire offers slit, in the presence of slit so that wire is by the parallel connection that a line equivalent is two lines road, based on the architectural characteristic, the utility model increases the circulation area of conductive line surfaces electric current, reduce the horizontal area of wire fluting side, so as to reduce the influence of Kelvin effect, while reduce vortes interference of the transmitting coil to receiving coil, operating efficiency is effectively increased, and reduces the temperature rise of coil.
Description
Technical field
Transmitting or the receiving coil of wireless charging device are the utility model is related to, more particularly to one kind is set for wireless charging
Standby induction coil structure.
Background technology
At present, with the fast development in wireless charging market, wireless charging function is increased by increasing for mobile phone
Concern, it is efficiency, heating and thickness the problem of overriding concern, because mobile phone is to zero during mobile phone wireless charging is realized
Part thickness has very harsh requirement, so RX Coil devices are all realized in mobile phone application using FPCB, traditional FPCB
Coil structures referring to Fig.1 and 2, form coiled type by the coiling of wire 100, the surface of wherein wire 100 be it is smooth, according to
Kelvin effect principle：When wire passes through alternating current, because the magnetic flux that inside and the marginal portion of wire are interlinked is different, cause
Electric current in conductive line surfaces produces uneven distribution, is reduced equivalent to wire effective cross-section, thus exist energy transmission efficiency it is low,
The defects of temperature rise.
Utility model content
The technical problems to be solved in the utility model is, in view of the shortcomings of the prior art, there is provided one kind can reduce the skin that becomes
The influence of effect, and then improve operating efficiency and reduce the induction coil structure for wireless charging device of coil temperature rise.
In order to solve the above technical problems, the utility model adopts the following technical scheme that.
A kind of induction coil structure for wireless charging device, it includes wire, and the wire coiling forms coil,
The surface of the wire offers slit, length direction extension of the slit along wire.
Preferably, the wire is copper cash.
Preferably, the wire is flat wire, and the width of the wire is 1mm, thickness 45um.
Preferably, the quantity of the wire is two, and two wires turn to double-layer coil.
Preferably, the width of the slit is 0.1mm.
Preferably, the wire coiling 10 is enclosed and forms coil.
In the induction coil structure of wireless charging device disclosed in the utility model, due to the surface of wire offer it is narrow
Groove, in the presence of slit so that wire is by the parallel connection that a line equivalent is two lines road, based on the architectural characteristic, this reality
With the new circulation area for increasing conductive line surfaces electric current, reduce the horizontal area of wire fluting side, so as to reduce skin
The influence of effect, while reduce vortes interference of the transmitting coil to receiving coil, operating efficiency is effectively increased, and reduce
The temperature rise of coil.
Brief description of the drawings
Fig. 1 is induction coil configuration figure in the prior art.
Fig. 2 is the enlarged drawing of part A in Fig. 1.
Fig. 3 is the utility model induction coil configuration figure.
Fig. 4 is the enlarged drawing of part B in Fig. 3.
Embodiment
The utility model is described in more detail with reference to the accompanying drawings and examples.
The utility model discloses a kind of induction coil structure for wireless charging device, with reference to shown in Fig. 3 and Fig. 4,
It includes wire 1, and the coiling of wire 1 forms coil, and the surface of the wire 1 offers slit 2, and the slit 2 is along leading
The length direction extension of line 1.
In the induction coil structure of above-mentioned wireless charging device, because the surface of wire 1 offers slit 2, in slit 2
Under effect so that wire 1 is by the parallel connection that a line equivalent is two lines road, based on the architectural characteristic, the utility model increase
The circulation area of the surface current of wire 1, reduce wire 1 and slot the horizontal area of side, so as to reduce the shadow of Kelvin effect
Ring, while reduce vortes interference of the transmitting coil to receiving coil, effectively increase operating efficiency, and reduce coil
Temperature rise.
Further, the wire 1 is copper cash.
In the present embodiment, the wire 1 is flat wire, and the width of the wire 1 is 1mm, thickness 45um.Enter
One step, in addition to 4 layers of magnetic sheet material nano crystalline substance, its thickness is 1mm.
As a kind of preferred embodiment, the quantity of the wire 1 is two, and two wires 1 turn to double-layer coil.
In the present embodiment, the width of the slit 2 is 0.1mm.Specifically, the slit 2 is located at the surface of wire 1
Middle.
Further, the coiling 10 of wire 1 is enclosed and forms coil.
In order to which the technical solution of the utility model is better described, the invention also discloses a kind of induction coil structure
Preparation method, this method comprises the following steps：
Step S1, prepare wire 1, the surface of the wire 1 offers slit 2, length side of the slit 2 along wire 1
To extension；
Step S2, the coiling of wire 1 is formed into coil.
In the above method, the wire 1 is flat wire, and the width of the wire 1 is 1mm, thickness 45um, institute
The width for stating slit 2 is 0.1mm.
Further, the quantity of the wire 1 is two, and in the step S2, two wires 1 are turned into double-deck line
Circle.
In the present embodiment, the wire 1 is copper cash, in the step S2, the coiling 10 of wire 1 is enclosed and forms line
Circle.
The induction coil structure prepared using the above method, it is as follows with the efficiency of conventional coil and temperature rise test：
Sample a is traditional induction coil structure, wherein, FPCB coil-windings 10 enclose, using double-deck coiling, copper wires
Wide 1mm, copper wires thickness are 45um, 4 thickness degree 1mm of magnetic sheet material nano crystalline substance；
Sample b is the utility model induction coil structure, wherein, FPCB coil-windings 10 enclose, copper using double-deck coiling
The wide 1mm of wire, the middle on its surface open up slit, and the width of slit is 0.1mm, and copper wires thickness is 45um, magnetic sheet material
Expect nanocrystalline 4 thickness degree 1mm.
Sample a and sample b parameter is：
| 100K/2V | Sample a | Sample b |
| Ls(uH) | 7.16 | 7.16 |
| Rs(mΩ) | 374 | 376 |
| Q | 12.0 | 11.67 |
Efficiency test platform is：Tx P9242 Demo+RX P9221 Demo, draw, sample b efficiency by efficiency test
Substantially 1%~2% is higher by than sample a；
Temperature rise test platform is：Tx P9242 Demo+RX P9221 Demo, drawn through overtemperature test, sample b temperature
Rise 2 DEG C lower than sample a.
The disclosed induction coil structure for being used for wireless charging device of the utility model, can be derived that by actual test,
The utility model can effectively improve the efficiency of wireless charging and reduce coil temperature rise, be suitably applied wireless charging system
In, and preferably application experience can be brought.
Simply the utility model preferred embodiment described above, is not limited to the utility model, all in this practicality
Modification, equivalent substitution or improvement made in new technical scope etc., should be included in the model that the utility model is protected
In enclosing.
Claims (6)
1. a kind of induction coil structure for wireless charging device, it is characterised in that include wire (1), the wire (1)
Coiling forms coil, and the surface of the wire (1) offers slit (2), and length direction of the slit (2) along wire (1) prolongs
Stretch.
2. it is used for the induction coil structure of wireless charging device as claimed in claim 1, it is characterised in that the wire (1)
For copper cash.
3. it is used for the induction coil structure of wireless charging device as claimed in claim 1, it is characterised in that the wire (1)
For flat wire, and the width of the wire (1) is 1mm, thickness 45um.
4. it is used for the induction coil structure of wireless charging device as claimed in claim 1, it is characterised in that the wire (1)
Quantity be two, two wires (1) turn to double-layer coil.
5. it is used for the induction coil structure of wireless charging device as claimed in claim 1, it is characterised in that the slit (2)
Width be 0.1mm.
6. it is used for the induction coil structure of wireless charging device as claimed in claim 1, it is characterised in that the wire (1)
Coiling 10 is enclosed and forms coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720698678.0U CN206758245U (en) | 2017-06-15 | 2017-06-15 | A kind of induction coil structure for wireless charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720698678.0U CN206758245U (en) | 2017-06-15 | 2017-06-15 | A kind of induction coil structure for wireless charging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206758245U true CN206758245U (en) | 2017-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720698678.0U Active CN206758245U (en) | 2017-06-15 | 2017-06-15 | A kind of induction coil structure for wireless charging device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068357A (en) * | 2017-06-15 | 2017-08-18 | 深圳市信维通信股份有限公司 | A kind of induction coil structure and preparation method for wireless charging device |
| CN111971763A (en) * | 2018-04-18 | 2020-11-20 | 松下知识产权经营株式会社 | Coil and motor using the same |
-
2017
- 2017-06-15 CN CN201720698678.0U patent/CN206758245U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068357A (en) * | 2017-06-15 | 2017-08-18 | 深圳市信维通信股份有限公司 | A kind of induction coil structure and preparation method for wireless charging device |
| CN111971763A (en) * | 2018-04-18 | 2020-11-20 | 松下知识产权经营株式会社 | Coil and motor using the same |
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