CN107507697A - A kind of coil, wireless charging structure and preparation method thereof, electronic equipment - Google Patents
A kind of coil, wireless charging structure and preparation method thereof, electronic equipment Download PDFInfo
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- CN107507697A CN107507697A CN201710739534.XA CN201710739534A CN107507697A CN 107507697 A CN107507697 A CN 107507697A CN 201710739534 A CN201710739534 A CN 201710739534A CN 107507697 A CN107507697 A CN 107507697A
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- 238000007600 charging Methods 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002356 single layer Substances 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 14
- 238000004026 adhesive bonding Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 75
- 229910052802 copper Inorganic materials 0.000 description 70
- 239000010949 copper Substances 0.000 description 70
- 238000004804 winding Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 description 1
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 description 1
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
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- 238000010168 coupling process Methods 0.000 description 1
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- 239000011229 interlayer Substances 0.000 description 1
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- 238000004806 packaging method and process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- 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
- H01F27/2823—Wires
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/346—Preventing or reducing leakage fields
-
- 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
- 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
-
- 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
- H01F41/06—Coil winding
- H01F41/064—Winding non-flat conductive wires, e.g. rods, cables or cords
-
- H02J7/025—
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of coil, wireless charging structure and preparation method thereof, electronic equipment.Wireless charging structure includes magnetic sheet and the coil being arranged on magnetic sheet；The coil is formed by the coiling of N stocks with single layer multi-strand side-by-side configuration or multi-lever and multi-strand side-by-side configuration coiling, N is more than 2 integer, the section of the coiling is square, the coiling has first end and the second end respectively, the first end of N stock coilings is connected together as a lead end of the coil, and the second end of N stock coilings is connected together as another lead end of the coil；Or the coil is formed by sub-thread coiling coiling, the section of the coiling is square, and the coiling has a first end and the second end, two lead ends of the first end and the second end respectively as the coil.Coil, wireless charging structure and the electronic equipment of the present invention, when realizing wireless charging, has higher charge efficiency.
Description
【Technical field】
The present invention relates to electronic component field, more particularly to a kind of coil, wireless charging structure and preparation method thereof,
Electronic equipment.
【Background technology】
With widely using for the portable electric appts such as smart mobile phone, tablet personal computer, requirement of the people to charging is also got over
Come higher.Especially smart mobile phone, its is powerful, and software enriches, and frequency of use is high, causes mobile phone power consumption amount big, when standby
Between it is short, must be charged repeatedly using these products, in practice into very troublesome thing.
In wireless charging device, usually Wireless charging coil and magnetic sheet bonds together use.Set using wireless charging
Standby is electronic equipment, such as when mobile phone is charged, does not have wire connection between mobile phone and wireless charging device, can put i.e.
Fill, use can be taken away at any time again, without the limitation of conventional mobile phone connecting wire, charging is convenient, flexibly, and with can be simultaneously
To advantages such as multiple electrical appliances chargings.However, during existing wireless charging device charging, it is dissatisfactory to still suffer from charge efficiency
Problem.
The disclosure of background above technology contents is only used for inventive concept and the technical scheme that auxiliary understands the present invention, and it is not
The prior art of present patent application is necessarily belonged to, shows the applying date of the above in present patent application in no tangible proof
In the case of disclosed, above-mentioned background technology should not be taken to evaluate the novelty and creativeness of the application.
【The content of the invention】
The technical problems to be solved by the invention are：Above-mentioned the deficiencies in the prior art are made up, propose a kind of coil, wireless charging
Electric structure and preparation method thereof, electronic equipment, when realizing wireless charging, there is higher charge efficiency.
The technical problem of the present invention is solved by following technical scheme：
A kind of wireless charging structure, including magnetic sheet and the coil that is arranged on magnetic sheet；The coil is by N stock coilings with individual layer
Multiply side-by-side configuration or multi-lever and multi-strand side-by-side configuration coiling form, and N is more than 2 integer, the section of the coiling be it is square,
The coiling has first end and the second end respectively, and the first end of N stock coilings is connected together as a lead of the coil
End, the second end of N stock coilings is connected together as another lead end of the coil；Or the coil is by sub-thread coiling
Coiling forms, and the section of the coiling is square, and the coiling has first end and the second end, the first end and the second end point
Two lead ends not as the coil.
A kind of preparation method of wireless charging structure, comprises the following steps：S1, by N stock coilings with single layer multi-strand side by side
The mode of mode or multi-lever and multi-strand side by side turns to coil, and N is more than 2 integer, the section of the coiling be it is square, it is described
Coiling has first end and the second end respectively, and the first end of N stock coilings is connected together as to a lead end of the coil,
Second end of N stock coilings is connected together as to another lead end of the coil；Or by sub-thread section for it is square around
Line turns to coil, and the coiling has first end and the second end, and the first end and the second end are respectively as the coil
Two lead ends；S2, the lead end of the coil is subjected to wicking processing；S3, the coil after wicking is handled are arranged on magnetic sheet
Over-assemble is into wireless charging structure.
A kind of coil, the coil is by the coiling of N stocks with single layer multi-strand side-by-side configuration or multi-lever and multi-strand side-by-side configuration coiling
Form, N is more than 2 integer, and the section of the coiling is square, and the coiling has first end and the second end respectively, N stocks around
The first end of line is connected together as a lead end of the coil, and the second end of N stock coilings is connected together as described
Another lead end of coil；Or the coil is formed by sub-thread coiling coiling, the section of the coiling be it is square, it is described around
Line has a first end and the second end, two lead ends of the first end and the second end respectively as the coil.
A kind of electronic equipment, including wireless charging receiving coil, it is characterised in that：The wireless charging receiving coil is such as
Upper described coil.
The beneficial effect that the present invention is compared with the prior art is：
In the wireless charging structure or electronic equipment of the present invention, when realizing wireless charging, transmitting coil or reception line
Enclose and formed to substitute circular coiling coiling by square coiling, so, electric current flows through the net sectional area of square copper cash than electric current stream
It is big by 20% or so to cross the net sectional area of circular copper cash, correspondingly D.C. resistance RDCWith AC resistance RACWant small by 20%, so as to fill
The influence of Kelvin effect when electric is smaller, and leakage field is smaller during charging, therefore overall charge efficiency is higher.In the same terms
Under, 20% can be lifted in terms of efficiency than circular copper cash using Wireless charging coil made of square copper cash.In addition, the present invention
Coil is by square coiling coiling, and square cross can closely side by side in coiling, and close lamination winding, winding department will not produce
Raw space, so as to improve the effective rate of utilization in the space of coil occupancy, adapt to the thin of the electronic equipments such as mobile phone, tablet personal computer
Type design requirement.
【Brief description of the drawings】
Fig. 1 is the multiply coiling of the specific embodiment of the invention with the schematic diagram of single layer multi-strand side-by-side configuration coiling；
Fig. 2 is the multiply coiling of the specific embodiment of the invention with the schematic diagram of multi-lever and multi-strand side-by-side configuration coiling；
Fig. 3 a are the cross-sectional views of the multiply coiling shown in Fig. 1；
Fig. 3 b are the schematic cross-sections that multiply coiling shown in Fig. 1 turns to coil；
Fig. 3 c are the schematic cross-sections that multiply coiling shown in Fig. 2 turns to coil；
Fig. 4 a are the schematic cross-sections that existing circular coiling turns to coil with single layer multi-strand side-by-side configuration；
Fig. 4 b are the schematic cross-sections that existing circular coiling turns to coil with multi-lever and multi-strand side-by-side configuration；
Fig. 5 is the effect diagram of the Kelvin effect of square coiling Yu the circular coiling of the specific embodiment of the invention；
Fig. 6 is the flow chart of the preparation method of the wireless charging structure of the specific embodiment of the invention.
【Embodiment】
With reference to embodiment and compare accompanying drawing the present invention is described in further details.
A kind of coil is proposed in present embodiment, by multiply coiling or sub-thread coiling coiling.
During with sub-thread coiling coiling, the section of coiling is square, and the coiling has a first end and the second end, described first
Two lead ends of end and the second end respectively as the coil.
During with multiply coiling coiling, formed with N stocks with single layer multi-strand side-by-side configuration or multi-lever and multi-strand side-by-side configuration coiling,
N is more than 2 integer, and the section of the coiling is square, and the coiling has first end and the second end respectively, N stock coilings
First end is connected together as a lead end of the coil, and the second end of N stock coilings is connected together as the coil
Another lead end.Usually, N can meet the major applications demand of electronic equipment in the range of 2~20.
As shown in figure 1, illustrate by 6 bursts of coilings 100 with the situation of single layer multi-strand side-by-side configuration coiling.Also can be according to reality
Demand, multi-lever and multi-strand side-by-side configuration is set to carry out coiling.Fig. 2 illustrates 18 bursts of coilings with 6 strands of individual layer side by side, builds up 3 layers of progress
The situation of coiling.From figure 2 it can be seen that it is very fine and close during square coiling coiling, there will not be space, coiling is to the effective of space
Utilization rate increases.Fig. 3 a illustrate the cross-sectional view of the coiling shown in Fig. 1, and the section of each coiling 100 is square.Figure
The coiling that 3b is illustrated shown in Fig. 1 turns to the schematic cross-section after coil, and the coiling that Fig. 3 c illustrate shown in Fig. 2 turns to line
Schematic cross-section after circle.The internal diameter of coil is ID, external diameter OD.As a comparison, Fig. 4 a and Fig. 4 b are respectively illustrated existing
Schematic cross-section of the circular coiling with individual layer with sandwich wound into coil.
Circular copper wire winding is substituted into coil using square copper cash in present embodiment, existing wireless charging can be overcome
Many deficiencies of coil, show that the influence that can reduce Kelvin effect, leakage field are small, efficiency is higher；In the feelings with same efficiency
The space of coil occupancy can be reduced under shape, improves space availability ratio.
Specifically, as shown in figure 5, under the same conditions, circular and square copper cash is coiled into coil, in identical voltage V
Under frequency f, due to there is a Kelvin effect, electric current is only flowed through in one layer relatively thin in conductive line surfaces, skin depth δ.So,
The net sectional area that electric current flows through copper cash can be calculated by formula.It is equal with the length of side of the diameter of circular copper cash and square copper cash
Exemplified by a, the net sectional area that electric current flows through circular copper cash is S1=(π/4) a2-(a-2δ)2=((π/4) -1) a2+4aδ-4δ2,
The net sectional area that electric current flows through square copper cash is S2=a2-(a-2δ)2=4a δ -4 δ2, it was found from above-mentioned comparison, electric current flows through
The net sectional area that the net sectional area of square copper cash flows through circular copper cash than electric current is big by 20% or so, accordingly, square copper cash
AC resistance RACWill be smaller than circular copper cash by 20% or so, when being used as wireless charging so as to the coil that square copper wire winding forms,
The influence of Kelvin effect is smaller, can lift charge efficiency.
In addition, according to Rdc=ρ L/S, equal length L copper cash, the R of circular copper cashDC=4 ρ L/ π a2, the R of square copper cashDC
=ρ L/a2, it is known that under similarity condition, the D.C. resistance of square copper cash is less than the D.C. resistance 20% or so of circular copper cash.
Finally, when using square copper cash side by side or during lamination coiling, between the line and line of layer and different layers with
Space will not be produced between layer, the effective rate of utilization in the space of coil occupancy can be improved.And circular copper cash is in winding process
In, between line, interlayer can produce space, useful space utilization rate is relatively small.And when taking the dimensional space of same length, it is long
Spend the surface area S of the circular copper cash for L3=π aL, length are the surface area S of L square copper cash4=4aL, the surface of square copper cash
Surface area about 27% of the product than circular copper cash., can be in interior increase transmitting in a big way when the surface area of square copper cash is larger
The coupling of magnetic flux between coil and receiving coil, so, in present embodiment using square coiling coil no matter conduct
Transmitting coil, or receiving coil, it is high to the effective rate of utilization in space, it can effectively reduce leakage field, so as to increase charge efficiency.
Present embodiment also proposes a kind of wireless charging structure, including magnetic sheet and the coil being arranged on magnetic sheet, line
Circle is the coil formed as described above by square coiling coiling.Wherein, the length of side of square coiling can be 0.05mm~
0.10mm.The coil inside that coiling forms can be the quadrangle such as square or circle, and outside can be the quadrangle or circle such as square
Shape.When the coil turned to is bowlder outside inner circle, it is preferable that the internal diameter of coil is Ф 15mm~Ф 25mm, and external diameter is Ф 35mm
~Ф 55mm.In the size range, the dimensional space of mobile terminal electronic equipment was both suitable for, while charge efficiency can also expire
Sufficient mobile terminal, such as the requirement of the charging such as mobile phone.
Present embodiment also provides a kind of electronic equipment, including wireless charging receiving coil, and coil is as above institute
The coil formed by square coiling coiling stated.By the coil for turning to the coiling of above-mentioned square-section be arranged on mobile phone,
In the housing of the electronic equipments such as tablet personal computer, so as to which the high efficiency wireless charging of electronic equipment can be realized.
In view of advantage of the square copper cash relative to circular copper cash, can also utilize multilayer side according to the requirement of different clients
Shape copper cash makes the Wireless charging coil of high recharge efficiency, on the Wireless charging coil product as automobile.
Present embodiment also proposes a kind of preparation method of wireless charging structure, as shown in fig. 6, including following step
Suddenly：
(1) by copper cash N stocks (N is more than 2 integer) individual layer of square-section that single thickness is 0.05mm~0.10mm
Coiling or multilayer coiling side by side side by side, are coiled into coil, and the first end of N stock coilings is connected together as the one of the coil and drawn
Line end, the second end of N stock coilings is connected together as to another lead end of the coil；Or by single square section
The copper wire winding in face is into coil, two lead ends of the both ends of copper cash respectively as coil.
(2) lead end of coil is arranged, and wicking processing is carried out to lead end.
(3) the coil gluing after wicking is handled, is attached on magnetic sheet and is assembled.Wherein, magnetic sheet material can be nickel zinc
Ferrite, manganese-zinc ferrite either alloy etc..
(4) product assembled is put into and baking-curing is carried out in oven.
(5) after solidifying, last handling process, such as detection, coding, packaging and storage etc. are carried out to product.
In above-mentioned preparation process, step is coiled into coil described in (1), is completed with fully automatic wire winding machine.
Step arranges described in (2) to coil lead, manually can be completed by frock clamp, can also be by setting
It is standby to be automatically performed.
Wicking is carried out to lead described in step (2), can be realized in wicking groove, temperature is 350 DEG C~400 DEG C, when
Between be 3s~10s.
Gluing is carried out described in step (3) to coil, adhesive tape is esters of acrylic acid material, and thickness is 20 μm~60 μm.
Step assembles described in (3), is that glue-coated coil is attached on magnetic sheet, can be realized by equipment, can also
Manual operation is completed.
Baking-curing described in step (4), is carried out in oven, temperature be 80 DEG C~100 DEG C, the time be 5s~
10s。
Step detects described in (5), and outward appearance detection can be completed by naked eyes or microscope, and electromagnetic performance detection can pass through
Pertinent instruments are completed.
It is as follows, by taking Wireless charging coil made of the square copper cash of individual layer n stocks and typical round copper cash as an example, by more specific
Embodiment the performance of the efficiency of the Wireless charging coil of present embodiment is further verified.
Embodiment 1
The square copper cash and typical round copper cash of identical size (0.085mm) are taken, coil is turned to 13 strand individual layers.This
Coiling 13 is enclosed in embodiment, and obtained coil outer diameter is 48mm, internal diameter 19mm.The D.C. resistance R of measuring coil respectivelyDC, circle
Coil corresponding to shape copper cash is 353m Ω, and coil corresponding to square copper cash is 282m Ω.In terms of power output, setting input electricity
Pressure and output voltage are 12V, and in 0.1A, the efficiency of coil corresponding to circular copper cash is 45%, coil corresponding to square copper cash
Efficiency be 58%；In 0.5A, the efficiency of coil corresponding to circular copper cash is 78%, the efficiency of coil corresponding to square copper cash
For 81%；In 1.0A, the efficiency of circular copper coil is 80%, and the efficiency of square copper coil is 82%.It is square it was found from data
Coil corresponding to the charge efficiency of coil corresponding to copper cash apparently higher than circular copper cash.
Embodiment 2
The square copper cash and typical round copper cash of identical size (0.085mm) are taken, coil is turned to 13 strand individual layers.This
Coiling 12 is enclosed in embodiment, and obtained coil outer diameter is 44mm, internal diameter 19mm.Measuring coil D.C. resistance R respectivelyDC, it is circular
Coil corresponding to copper cash is 296m Ω, and coil corresponding to square copper cash is 231m Ω.In terms of power output, input voltage is set
It is 12V with output voltage, in 0.1A, the efficiency of circular copper coil is 41%, and the efficiency of square copper coil is 54%；In 0.5A
When, the efficiency of circular copper coil is 72%, and the efficiency of square copper coil is 75%；In 1.0A, the efficiency of circular copper coil is
74%, the efficiency of square copper coil is 76%.It was found from data, the charge efficiency of coil corresponding to square copper cash is apparently higher than circle
Coil corresponding to shape copper cash.
Embodiment 3
The square copper cash and typical round copper cash of identical size (0.085mm) are taken, coil is turned to 12 strand individual layers.This
Coiling 12 is enclosed in embodiment, and obtained coil outer diameter is 43mm, internal diameter 19mm.Measuring coil D.C. resistance R respectivelyDC, it is circular
Coil corresponding to copper cash is 294m Ω, and coil corresponding to square copper cash is 226m Ω.In terms of power output, input voltage is set
It is 12V with output voltage, in 0.1A, the efficiency of circular copper coil is 38%, and the efficiency of square copper coil is 50%；In 0.5A
When, the efficiency of circular copper coil is 66%, and the efficiency of square copper coil is 69%；In 1.0A, the efficiency of circular copper coil is
68%, the efficiency of square copper coil is 70%.It was found from data, the charge efficiency of coil corresponding to square copper cash is apparently higher than circle
Coil corresponding to shape copper cash.
Test last month to above three embodiment, which also has, to be arranged, as shown in the table：
From embodiment 1-3 testing result, circle is substantially better than with the Wireless charging coil performance of square copper wire winding
The coil of shape copper wire winding.Under conditions of obtaining identical charge efficiency, the coil of present embodiment can the less circle of coiling
Number, so as to realize the application demand of miniaturization, slimming.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
Some replacements or obvious modification are made on the premise of not departing from present inventive concept, and performance or purposes are identical, should all be considered as
Belong to protection scope of the present invention.
Claims (10)
1. a kind of wireless charging structure, including magnetic sheet and the coil that is arranged on magnetic sheet；It is characterized in that：The coil is by N stocks
Coiling is formed with single layer multi-strand side-by-side configuration or multi-lever and multi-strand side-by-side configuration coiling, and N is more than 2 integer, the coiling
Section is square, and the coiling has first end and the second end respectively, and the first end of N stock coilings is connected together as the line
One lead end of circle, the second end of N stock coilings is connected together as another lead end of the coil；Or the coil
Formed by sub-thread coiling coiling, the section of the coiling is square, and the coiling has first end and the second end, the first end
Two lead ends with the second end respectively as the coil.
2. wireless charging structure according to claim 1, it is characterised in that：The length of side of the coiling be 0.05mm~
0.10mm。
3. wireless charging structure according to claim 1, it is characterised in that：The coiling of the coil is shaped as：Inside is
Quadrangle or circle, outside is quadrangle or circle.
4. wireless charging structure according to claim 1, it is characterised in that：The coiling of the coil is shaped as outside inner circle
Circle；The internal diameter of the coil is 15mm~25mm, and external diameter is 35mm~55mm.
A kind of 5. preparation method of wireless charging structure, it is characterised in that：Comprise the following steps：S1 is more with individual layer by N stock coilings
The mode of mode or multi-lever and multi-strand side by side of stock side by side turns to coil, and N is more than 2 integer, and the section of the coiling is
Square, the coiling has first end and the second end respectively, and the first end of N stock coilings is connected together as into the coil
One lead end, the second end of N stock coilings is connected together as to another lead end of the coil；Or by sub-thread section
Turn to coil for square coiling, the coiling has a first end and the second end, the first end and the second end respectively as
Two lead ends of the coil；S2, the lead end of the coil is subjected to wicking processing；S3, the coil after wicking is handled
Magnetic sheet over-assemble is arranged on into wireless charging structure.
6. the preparation method of wireless charging structure according to claim 5, it is characterised in that：In step S2, in wicking groove
Middle progress wicking processing, temperature is 350 DEG C~400 DEG C during processing, and processing time is 3s~10s.
7. the preparation method of wireless charging structure according to claim 5, it is characterised in that：In step S3, at wicking
Coil after reason carries out gluing, and the coil after gluing is attached on the magnetic sheet, is obtained after baking-curing described wireless
Charging structure.
8. the preparation method of wireless charging structure according to claim 7, it is characterised in that：The glue material of gluing is third
Olefin(e) acid esters, the thickness of gluing is 20 μm~60 μm；During baking-curing, temperature is 80 DEG C~100 DEG C, and the time is 5s~10s.
A kind of 9. coil, it is characterised in that：The coil by the coiling of N stocks with single layer multi-strand side-by-side configuration or multi-lever and multi-strand side by side
Mode coiling forms, and N is more than 2 integer, and the section of the coiling is square, and the coiling has first end and second respectively
End, the first end of N stock coilings are connected together as a lead end of the coil, and the second end of N stock coilings links together
Another lead end as the coil；Or the coil is formed by sub-thread coiling coiling, the section of the coiling is side
Shape, the coiling have a first end and the second end, two lead ends of the first end and the second end respectively as the coil.
10. a kind of electronic equipment, including wireless charging receiving coil, it is characterised in that：The wireless charging receiving coil is such as
Coil described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| 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 |
| CN109038851A (en) * | 2018-08-02 | 2018-12-18 | 深圳顺络电子股份有限公司 | A kind of Wireless charging coil mould group |
| CN109637771A (en) * | 2018-12-29 | 2019-04-16 | 北京工业大学 | A kind of fixing means of induction coil |
| CN111083609A (en) * | 2019-12-06 | 2020-04-28 | 歌尔股份有限公司 | Voice coil wire, voice coil and sound production device for sound production device |
| 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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| 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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Effective date of registration: 20201111 Address after: Building A5, No.28 Tangqing West Road, Shitan Pu, Tangxia Town, Dongguan City, Guangdong Province 523710 Applicant after: Dongguan shunluo Electronics Co., Ltd Address before: Shenzhen City, Guangdong province Baoan District 518110 sightseeing road s Fuyuan sunlord Industrial Park Applicant before: Shenzhen Sunlord Electronics Co.,Ltd. |