CN109768444A - A kind of termination and mode of connection suitable for litz wire - Google Patents
A kind of termination and mode of connection suitable for litz wire Download PDFInfo
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- CN109768444A CN109768444A CN201910033773.2A CN201910033773A CN109768444A CN 109768444 A CN109768444 A CN 109768444A CN 201910033773 A CN201910033773 A CN 201910033773A CN 109768444 A CN109768444 A CN 109768444A
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- connecting terminal
- litz wire
- pencil casing
- line pencil
- termination
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Abstract
The invention proposes a kind of terminations and mode of connection suitable for litz wire, belong to electric connection technology field, more particularly to a kind of termination and mode of connection suitable for litz wire.It solves the problems, such as to increase in excitation lower connecting terminal overheat, the equivalent series resistance of high-frequency current.It includes the application method of the first connecting terminal, the second connecting terminal, line pencil casing and device.It is mainly used for the connection of high frequency magnetic coupling type wireless power transmission litz wire.
Description
Technical field
The invention belongs to electric connection technology fields, more particularly to a kind of suitable for the termination of litz wire and wiring side
Method.
Background technique
In recent years, wireless power transmission technology increasingly obtains extensive concern, using the product of the technology in mobile device
The various fields such as charging, medical product, electric car, rail traffic are applied and promote.In order to improve wireless power transmission
The efficiency of transmission of system reduces coil copper loss, need to multiply insulation copper stranded conductor (also referred to as litz wire) as coil method into
Row optimization design, to reduce its equivalent series resistance in high-frequency current excitation.
Litz wire is applied to transformer and inductor in high frequency design earliest, by the way that multiply insulated copper wire is stranded in one side by side
It rises, limits the vortex intensity inside conducting wire, be uniformly distributed each stock electric current holding, to reduce high-frequency resistance.But with function
The rising of rate grade, bigger number of share of stock, bigger line footpath litz wire start to be put into use.Traditional inductor coil connecting terminal
It is connected using copper spade tip or contact pin mode, by the way that the end scolding tin of litz wire or chemical depainting means are removed table
It is fixed together after the insulating layer of face with made of metal connecting terminal.Using this connector coil can under the excitation of high-frequency current,
Biggish eddy-current loss is generated in connecting terminal position, connecting terminal is caused to overheat.Simultaneously as connecting terminal itself exists
Skin effect passes to the current distribution of each stock conducting wire of litz wire also different from according to connection type difference.In conducting wire
The electric current that the SI semi-insulation copper wire of heart position passes through will be far below the part copper wire positioned at conducting wire marginal position, with exciting current
Frequency increase, effect is more obvious.This equivalent series resistance for resulting in litz wire indirectly increases, and asks to alleviate this
Topic needs to design a kind of Novel joint for being suitable for the application of high frequency high current, to guarantee being uniformly distributed for litz wire internal current,
And avoid the problems of excessive heat of connecting terminal.
Existing Ritz wire terminal is divided to two kinds, and one is the sheet connection terminals for being referred to as copper lug, passes through screw and nut
It is fixed；Another kind is the aviation plug connected using contact pin mode, is attached by single pin connectors mode.Both wiring
Terminal all using by wrapped in wire inside connecting terminal by the way of fix.Both fixed forms are all equivalent in litz wire
Between connect one section of solid metallic conductor, high-frequency circuit excitation under, this section of solid metallic conductor will generate skin effect, make in it
The current distribution in portion would tend to conductive surface, so that the current distribution inside litz wire is influenced indirectly, so that being located at Ritz
The electric current that line central part harness passes through is far fewer than marginal portion, to reduce effective conducting area of conducting wire entirety, improves
The conduction impedance of coil.There is enterprise's selection to use more contact pin type connectors, by the way that multiple connect will be made respectively after litz wire beam splitting
Line contact pin, to provide more effectively conducting areas, but process time required for this mode and complexity are higher, are not suitable for
Produce in enormous quantities and uses.Litz wire manufacturer then reduces the shadow of skin effect by using the mode of complicated twisting process
It rings, but the complexity of bring twisting process makes the cost of conducting wire increase sharply therewith.
Summary of the invention
The present invention in order to solve the problems in the prior art, proposes a kind of suitable for the termination of litz wire and wiring side
Method.
To achieve the above object, the invention adopts the following technical scheme: a kind of termination suitable for litz wire, it is wrapped
The first connecting terminal, the second connecting terminal and line pencil casing are included, first connecting terminal and the second connecting terminal are cylinder
Shape structure, first connecting terminal and the second connecting terminal central part are cylindrical sleeve, first connecting terminal
End is the cylindrical sleeve that outer diameter is greater than central part, and second connecting terminal end cylindrical sleeve outer diameter connects with first
Line terminals end cylindrical sleeve internal diameter is equal, and first connecting terminal end is connected with the second connecting terminal end nesting,
The line pencil casing is that both ends internal diameter is different, the identical cylindrical shroud barrel structure of outer diameter, outside the line pencil casing cylindrical sleeve
Side is provided with hole, and the line pencil casing quantity is two pieces, is cooperatively connected respectively with the first connecting terminal and the second connecting terminal.
Further, first connecting terminal and the second connecting terminal top are flattened conical shape structure.
Further, it is provided on the outside of the cylindrical sleeve of first connecting terminal and the second connecting terminal central part
Hole.
Further, it is equal with the first connecting terminal end outer diameter to be equipped with diameter for the second connecting terminal outer wall
Cylindrical boss.
The present invention also provides a kind of mode of connection suitable for litz wire, it the following steps are included:
Step 1: litz wire one end is passed through from the small internal diameter side of harness sleeve；
Step 2: depainting processing is carried out to litz wire penetrating end using chemical stripper, the litz wire line of depainting will be completed
Beam spreading is wrapped on the first connecting terminal top and central part cylindrical structure outer wall after opening；
Step 3: line pencil casing is pushed to end side, by line pencil casing and the first connecting terminal by litz wire harness clips
Tightly；
Step 4: by the hole that opens up on the outside of line pencil casing to being poured into interlayer between line pencil casing and the first connecting terminal
Scolding tin fills up scolding tin by interlayer；
Step 5: the second connecting terminal and line pencil casing are cooperatively connected according to step 1 to step 4 the method；
Step 6: the first connecting terminal end is connected with the second connecting terminal end nesting, completes the connection of litz wire.
Compared with prior art, it the beneficial effects of the present invention are: the present invention sets about in terms of connecting terminal, devises applicable
In the termination and mode of connection of high frequency magnetic coupling type wireless power transmission litz wire, radio energy transmission system is improved
Efficiency of transmission reduces coil copper loss, solves the problems, such as to overheat in the excitation lower connecting terminal of high-frequency current, while reducing and connecing
Equivalent series resistance of the line terminals when high-frequency current motivates.The present invention is more suitably applied to high frequency high current situation, protects
Being uniformly distributed for litz wire internal current has been demonstrate,proved, connecting terminal is avoided to overheat.Process time of the invention is short, easy to operate, easy to operate,
It is suitble to produce in enormous quantities and uses.
Detailed description of the invention
Fig. 1 is the first connection terminal structure schematic diagram of the present invention
Fig. 2 is the second connection terminal structure schematic diagram of the present invention
Fig. 3 is line pencil casing structural schematic diagram of the present invention
Fig. 4 is the schematic diagram of step 1 a kind of mode of connection suitable for litz wire of the present invention
Fig. 5 is the schematic diagram of step 2 a kind of mode of connection suitable for litz wire of the present invention
Fig. 6 is the schematic diagram of step 3 and step 4 a kind of mode of connection suitable for litz wire of the present invention
Fig. 7 is the schematic diagram of step 5 a kind of mode of connection suitable for litz wire of the present invention
Fig. 8 is the schematic diagram of step 6 a kind of mode of connection suitable for litz wire of the present invention
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation illustrates.
Illustrate present embodiment referring to Fig. 1-8, a kind of termination suitable for litz wire, it includes the first terminals
Son, the second connecting terminal and line pencil casing, first connecting terminal and the second connecting terminal are cylindrical structure, and described the
One connecting terminal and the second connecting terminal central part are cylindrical sleeve, and first connecting terminal end is greater than for outer diameter
The cylindrical sleeve of central part, second connecting terminal end cylindrical sleeve outer diameter and the first connecting terminal end cylinder
Shape sleeve diameter is equal, and first connecting terminal end is connected with the second connecting terminal end nesting, and the line pencil casing is
Both ends internal diameter difference, the identical cylindrical shroud barrel structure of outer diameter, the line pencil casing cylindrical sleeve outside is provided with hole, described
Line pencil casing quantity is two pieces, is cooperatively connected respectively with the first connecting terminal and the second connecting terminal.
First connecting terminal of the present invention and the second connecting terminal top are flattened conical shape structure, flattened conical shape
The design of structure is not will lead to sub-thread filament in order to guarantee that litz wire bending angle when plugging into connecting terminal is smooth and fracture.
Hole is provided on the outside of the cylindrical sleeve of first connecting terminal and the second connecting terminal central part, the hole opened up be for
During scolding tin is perfused cavity will not be generated because of closed air, cause to reduce connection effect.Second terminals
Sub- outer wall is equipped with the diameter cylindrical boss equal with the first connecting terminal end outer diameter, convenient for being connected with connecting terminal.Institute
The hole opened up on the outside of line pencil casing is stated to be convenient for pouring into scolding tin reinforcing to inside after litz wire is fixed.
The present invention also provides a kind of mode of connection suitable for litz wire, it the following steps are included:
Step 1: litz wire one end is passed through from the small internal diameter side of harness sleeve；
Step 2: depainting processing is carried out to litz wire penetrating end using chemical stripper, the litz wire line of depainting will be completed
Beam spreading is wrapped on the first connecting terminal top and central part cylindrical structure outer wall after opening；
Step 3: line pencil casing is pushed to end side, by line pencil casing and the first connecting terminal by litz wire harness clips
Tightly；
Step 4: by the hole that opens up on the outside of line pencil casing to being poured into interlayer between line pencil casing and the first connecting terminal
Scolding tin fills up scolding tin by interlayer；
Step 5: the second connecting terminal and line pencil casing are cooperatively connected according to step 1 to step 4 the method；
Step 6: the first connecting terminal end is connected with the second connecting terminal end nesting, completes the connection of litz wire.
Litz wire will guarantee that there are sufficient operating space, the steps after passing through harness sleeve in step 1 described in this method
It needs to guarantee the abundant depainting of litz wire in rapid two and be wrapped on the first connecting terminal after sufficiently scattering, in harness in the step 3
During casing is pushed to end side, line pencil casing is gradually close with the first connecting terminal, makes it between the first connecting terminal
Away from narrowing, scolding tin is poured into interlayer to clamp litz wire harness, in the step 4 and guarantees the first connecting terminal and litz wire
It comes into full contact with, and plays fixed function, first connecting terminal of the step 1 into step 4 is changed to second by the step 5
Connecting terminal, completes the second connecting terminal and the mating connection with line pencil casing in the same way, and the step 6 connects two
Line terminals are connected to form nesting effect, complete the connection to litz wire.
Above to a kind of termination and mode of connection suitable for litz wire provided by the present invention, detailed Jie has been carried out
It continues, used herein a specific example illustrates the principle and implementation of the invention, and the explanation of above embodiments is only
It is to be used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to this hair
Bright thought, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not manage
Solution is limitation of the present invention.
Claims (5)
1. a kind of termination suitable for litz wire, it is characterised in that: it include the first connecting terminal, the second connecting terminal and
Line pencil casing, first connecting terminal and the second connecting terminal are cylindrical structure, first connecting terminal and second
Connecting terminal central part is cylindrical sleeve, and first connecting terminal end is the cylinder that outer diameter is greater than central part
Sleeve, second connecting terminal end cylindrical sleeve outer diameter is equal with the first connecting terminal end cylindrical sleeve internal diameter,
First connecting terminal end is connected with the second connecting terminal end nesting, and the line pencil casing is that both ends internal diameter is different, outer
The identical cylindrical shroud barrel structure of diameter, the line pencil casing cylindrical sleeve outside are provided with hole, and the line pencil casing quantity is
Two pieces is cooperatively connected with the first connecting terminal and the second connecting terminal respectively.
2. a kind of termination suitable for litz wire according to claim 1, it is characterised in that: first terminals
Son and the second connecting terminal top are flattened conical shape structure.
3. a kind of termination suitable for litz wire according to claim 1, it is characterised in that: first terminals
Hole is provided on the outside of the cylindrical sleeve of son and the second connecting terminal central part.
4. a kind of termination suitable for litz wire according to claim 1, it is characterised in that: second terminals
Sub- outer wall is equipped with the diameter cylindrical boss equal with the first connecting terminal end outer diameter.
5. a kind of mode of connection based on the termination described in claim 1 suitable for litz wire, it is characterised in that: it is wrapped
Include following steps:
Step 1: litz wire one end is passed through from the small internal diameter side of harness sleeve；
Step 2: depainting processing is carried out to litz wire penetrating end using chemical stripper, the litz wire harness for completing depainting is dissipated
It is wrapped in after opening on the first connecting terminal top and central part cylindrical structure outer wall；
Step 3: line pencil casing is pushed to end side, is clamped litz wire harness by line pencil casing and the first connecting terminal；
Step 4: by the hole that opens up on the outside of line pencil casing to pouring into weldering between line pencil casing and the first connecting terminal in interlayer
Tin fills up scolding tin by interlayer；
Step 5: the second connecting terminal and line pencil casing are cooperatively connected according to step 1 to step 4 the method；
Step 6: the first connecting terminal end is connected with the second connecting terminal end nesting, completes the connection of litz wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910033773.2A CN109768444B (en) | 2019-01-15 | 2019-01-15 | Wiring device and wiring method suitable for litz wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910033773.2A CN109768444B (en) | 2019-01-15 | 2019-01-15 | Wiring device and wiring method suitable for litz wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109768444A true CN109768444A (en) | 2019-05-17 |
| CN109768444B CN109768444B (en) | 2020-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910033773.2A Active CN109768444B (en) | 2019-01-15 | 2019-01-15 | Wiring device and wiring method suitable for litz wire |
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| Country | Link |
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| CN (1) | CN109768444B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112404626A (en) * | 2020-10-14 | 2021-02-26 | 许继变压器有限公司 | Litz wire welding device |
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| CN206461100U (en) * | 2017-01-24 | 2017-09-01 | 南京康尼新能源汽车零部件有限公司 | A kind of aluminum conductor creep resistant crimp type terminal |
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Patent Citations (10)
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| JP2009019652A (en) * | 2007-07-10 | 2009-01-29 | Shigeo Kawasaki | Pipe joint |
| CN101453061A (en) * | 2007-11-28 | 2009-06-10 | 健和兴端子股份有限公司 | Easy inserting type conductive wire connector and method for preparing the same |
| JP2012104396A (en) * | 2010-11-11 | 2012-05-31 | Yazaki Corp | Method of connecting crimp terminal of aluminum conductor, and method of connecting crimp terminal of aluminum wire |
| CN102683910A (en) * | 2012-05-19 | 2012-09-19 | 林锐涛 | Conical connecting device for tubular bus bar and connecting method thereof |
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| CN206461100U (en) * | 2017-01-24 | 2017-09-01 | 南京康尼新能源汽车零部件有限公司 | A kind of aluminum conductor creep resistant crimp type terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112404626A (en) * | 2020-10-14 | 2021-02-26 | 许继变压器有限公司 | Litz wire welding device |
| CN112404626B (en) * | 2020-10-14 | 2022-05-03 | 许继变压器有限公司 | Litz wire welding device |
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| Publication number | Publication date |
|---|---|
| CN109768444B (en) | 2020-10-16 |
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