CN209343917U - A kind of Wireless charging coil - Google Patents
A kind of Wireless charging coil Download PDFInfo
- Publication number
- CN209343917U CN209343917U CN201822253182.XU CN201822253182U CN209343917U CN 209343917 U CN209343917 U CN 209343917U CN 201822253182 U CN201822253182 U CN 201822253182U CN 209343917 U CN209343917 U CN 209343917U
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- turn
- wireless charging
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- charging coil
- wire turn
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Abstract
The utility model discloses a kind of Wireless charging coils.By conducting wire, along the circumferential direction successively multi-turn wire turn made of coiling forms the Wireless charging coil from inside to outside；The line width of multi-turn wire turn even variation from inside to outside；It is drawn by starting outlet the starting point of innermost circle wire turn；The starting point of innermost circle wire turn is connect with the rectification circuit plate of charging equipment with the clearing end of outmost turns wire turn；Wireless charging coil is used to incude the electromagnetic signal of transmitting terminal sending, generates alternating current, and alternating current is transmitted to rectification circuit plate；Rectification circuit plate is used to alternating current being converted to direct current, to be embodied as charging equipment charging.The utility model can be improved charge efficiency.
Description
Technical field
The utility model relates to wireless charging technical fields, more particularly to a kind of Wireless charging coil.
Background technique
Wireless charging mobile device is the equipment to be charged using electromagnetic wave induction principle, in transmitting terminal and receiving end
Respectively there is a coil, sends end-coil and be connected with line power supply generation electromagnetic signal, the electromagnetism letter of the coil-induced transmitting terminal in receiving end
Number charging equipment charging is given to generate electric current, for example, the home equipments such as mobile phone, mobile desk lamp, sound equipment.With wireless charging
Mobile device market make rapid progress, it is higher and higher for the demand of the convenience of charging, the popularization of wireless charging technology with answer
With generally being received by ordinary user, the application of wireless charging receiving terminal is more conducive to the convenience of its charging.
Most of Wireless charging coil of existing wireless charging receiving terminal is the uniform coiled wire-wound coil of line footpath, the i.e. line of coil
Wide and line spacing be all it is impartial, result in Distribution of Magnetic Field uneven in this way, to influence charge efficiency.It would therefore be highly desirable to a kind of
The receiving end Wireless charging coil that can be improved charge efficiency occurs.
Summary of the invention
Based on this, it is necessary to a kind of Wireless charging coil is provided, to improve charge efficiency.
To achieve the above object, the utility model provides following scheme:
A kind of Wireless charging coil, by conducting wire, along the circumferential direction successively coiling forms the Wireless charging coil from inside to outside
Multi-turn wire turn composition；The line width of wire turn described in multi-turn even variation from inside to outside；The starting point of innermost circle wire turn passes through starting
Outlet is drawn；The starting point of innermost circle wire turn and the clearing end of outmost turns wire turn connect with the rectification circuit plate of charging equipment
It connects；
The Wireless charging coil is used to incude the electromagnetic signal that the transmitting terminal issues, and generates alternating current, and by institute
It states alternating current and is transmitted to the rectification circuit plate；The rectification circuit plate is used to the alternating current being converted to direct current,
To be embodied as the charging equipment charging.
Optionally, the line width of wire turn described in multi-turn uniform increments from inside to outside.
Optionally, the line width of each wire turn are as follows:
D '=d+ (N-1) * S
Wherein, d indicates the line width of innermost circle wire turn, the line width of d ' expression N astragal circle from inside to outside, and S indicates gradual change amount.
Optionally, the even variation from inside to outside of the line spacing between wire turn described in multi-turn.
Optionally, the uniform increments from inside to outside of the line spacing between wire turn described in multi-turn.
Optionally, the conducting wire is copper wire.
Optionally, the conducting wire is silver wire rod.
Optionally, the copper wire is silver-coated copper wire.
Compared with prior art, the utility model has the beneficial effects that
The utility model proposes a kind of Wireless charging coils.The Wireless charging coil is by conducting wire along the circumferential direction by interior
Successively multi-turn wire turn made of coiling forms outward；The line width of multi-turn wire turn even variation from inside to outside；Innermost circle wire turn rises
It is drawn by starting outlet at beginning；The starting point of innermost circle wire turn and the clearing end of outmost turns wire turn are whole with charging equipment
The connection of current circuit plate；Wireless charging coil is used to incude the electromagnetic signal of transmitting terminal sending, generates alternating current, and alternation is electric
It is streamed to rectification circuit plate；Rectification circuit plate is used to alternating current being converted to direct current, is filled with being embodied as charging equipment
Electricity.The line width gradual change of wire turn can be improved charge efficiency, and can reduce temperature so that Distribution of Magnetic Field is uniform in the utility model
It rises.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of Wireless charging coil of the utility model embodiment.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Fig. 1 is a kind of structural schematic diagram of Wireless charging coil of the utility model embodiment.
Referring to Fig. 1, the Wireless charging coil of embodiment is more as made of conducting wire along the circumferential direction successively coiling from inside to outside
Astragal circle composition；The line width of wire turn described in multi-turn even variation from inside to outside；The starting point of innermost circle wire turn 1 passes through starting outlet
2 draw；The starting point of innermost circle wire turn 1 is connect with the rectification circuit plate of charging equipment with the clearing end of outmost turns wire turn 3；
The Wireless charging coil is placed in the electromagnetic signal region of transmitting terminal sending；The Wireless charging coil is for incuding the hair
The electromagnetic signal that sending end issues, and according to Faraday's electromagnetic induction law, alternating current is generated, and the alternating current is transmitted
To the rectification circuit plate；The rectification circuit plate is used to the alternating current being converted to direct current, be embodied as it is described to
Charging equipment charging.
In the present embodiment, the line width of wire turn described in multi-turn uniform increments from inside to outside, incremental manner can be according to actually answering
With specific adjustment.The line width of each wire turn can indicate are as follows:
D '=d+ (N-1) * S
Wherein, d indicates the line width of innermost circle wire turn 1, the line width of d ' expression N astragal circle from inside to outside, and S indicates gradual change
Amount.
As an alternative embodiment, line spacing between wire turn described in multi-turn even variation from inside to outside.Specifically
, line spacing between wire turn described in multi-turn can uniform increments from inside to outside.
It originally is in embodiment, the conducting wire is copper wire or silver wire rod.The copper wire can choose silver-coated copper wire.
The electromagnetic coupling formula route that the Wireless charging coil of the present embodiment can arrange in pairs or groups any uses.
The design principle of Wireless charging coil described above is introduced below.
Magnetic field strength and loss are proportional, and the strongest position in magnetic field, skin effect is obvious, and wire turn loss is also maximum.
Wireless charging coil intermediate magnetic strength is most strong, so the skin effect of innermost circle wire turn 1 is maximum.
Shown in the following formula of skin depth in skin effect:
Wherein, Δ indicates skin depth, and ω indicates that angular frequency, the π of ω=2 f, f indicate that field frequency, μ indicate magnetic conductivity, v
Indicate conductivity.
Since the magnetic field of 1 present position of innermost circle wire turn is most strong, so the skin depth of innermost circle wire turn 1 is minimum, therefore,
The line width of innermost circle wire turn 1 does not need too wide, the line width minimum of innermost circle wire turn 1.Magnetic field strength successively dies down from inside to outside, phase
The wire turn line width answered is also successively to broaden from inside to outside.Thus the overall losses of coil are reduced, improves charge efficiency, reduces line
Coil temperature rise.
The line width and line spacing gradual design of wire turn in the present embodiment, can make field homogeneity be distributed, improve and fill
Electrical efficiency reduces temperature rise.
Specific case used herein is expounded the principles of the present invention and embodiment, above embodiments
Explanation be merely used to help understand the method and its core concept of the utility model；Meanwhile for the general technology of this field
Personnel, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.In conclusion
The content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. a kind of Wireless charging coil, which is characterized in that the Wireless charging coil by conducting wire along the circumferential direction from inside to outside according to
The composition of multi-turn wire turn made of secondary coiling；The line width of wire turn described in multi-turn even variation from inside to outside；The starting of innermost circle wire turn
It is drawn by starting outlet at end；The clearing end of the starting point of innermost circle wire turn and outmost turns wire turn with the rectification of charging equipment
Circuit board connection；
The Wireless charging coil is used to incude the electromagnetic signal of transmitting terminal sending, generates alternating current, and the alternation is electric
It is streamed to the rectification circuit plate；The rectification circuit plate is used to the alternating current being converted to direct current, to be embodied as
The charging equipment charging.
2. a kind of Wireless charging coil according to claim 1, which is characterized in that the line width of wire turn described in multi-turn is by introversion
Outer uniform increments.
3. a kind of Wireless charging coil according to claim 2, which is characterized in that the line width of each wire turn are as follows:
D '=d+ (N-1) * S
Wherein, d indicates the line width of innermost circle wire turn, the line width of d ' expression N astragal circle from inside to outside, and S indicates gradual change amount.
4. a kind of Wireless charging coil according to claim 1, which is characterized in that the line spacing between wire turn described in multi-turn
Even variation from inside to outside.
5. a kind of Wireless charging coil according to claim 4, which is characterized in that the line spacing between wire turn described in multi-turn
Uniform increments from inside to outside.
6. a kind of Wireless charging coil according to claim 1, which is characterized in that the conducting wire is copper wire.
7. a kind of Wireless charging coil according to claim 1, which is characterized in that the conducting wire is silver wire rod.
8. a kind of Wireless charging coil according to claim 6, which is characterized in that the copper wire is silver-coated copper wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822253182.XU CN209343917U (en) | 2018-12-29 | 2018-12-29 | A kind of Wireless charging coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822253182.XU CN209343917U (en) | 2018-12-29 | 2018-12-29 | A kind of Wireless charging coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209343917U true CN209343917U (en) | 2019-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822253182.XU Active CN209343917U (en) | 2018-12-29 | 2018-12-29 | A kind of Wireless charging coil |
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| Country | Link |
|---|---|
| CN (1) | CN209343917U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494058A (en) * | 2018-12-29 | 2019-03-19 | 普尔思（苏州）无线通讯产品有限公司 | A kind of Wireless charging coil |
-
2018
- 2018-12-29 CN CN201822253182.XU patent/CN209343917U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494058A (en) * | 2018-12-29 | 2019-03-19 | 普尔思（苏州）无线通讯产品有限公司 | A kind of Wireless charging coil |
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