CN209357540U - A kind of electromagnetic coil - Google Patents
A kind of electromagnetic coil Download PDFInfo
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- CN209357540U CN209357540U CN201920265885.6U CN201920265885U CN209357540U CN 209357540 U CN209357540 U CN 209357540U CN 201920265885 U CN201920265885 U CN 201920265885U CN 209357540 U CN209357540 U CN 209357540U
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- circle
- circle line
- line
- electromagnetic coil
- coil
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Abstract
The utility model discloses a kind of electromagnetic coil, including circle line, it is head positioned at one end of circle line outmost turns, it is tail portion positioned at one end of circle line innermost circle, the mean breadth of at least two circle circle lines since the tail portion is less than the mean breadth of at least two circle circle lines since the head, and the thickness of circle line is less than the average value of circle line width.The utility model improves coil Internal and external cycle current density, electric current is allowed to be evenly distributed on circle line by being designed to circle line width；Secondly, help to lower current loss, can effective control coil disk bulk temperature.
Description
Technical field
The utility model relates to electromagnetic coil fields.
Background technique
Electromagnetic coil is widely used in the fields such as inductor, heating equipment, transformer, charger, solenoid valve.Existing electricity
The problem of magnetic coil either winding is coil or copper sheet coil, all there is line footpath and fixes, current distribution is uneven.Such as Fig. 1, it is
The circle line width of winding type coil panel in the prior art, coil is identical everywhere and immobilizes, due to inside and outside loop current
Density is different, and such structure causes current loss in coil big；It, can not be according to secondly, the thickness of circle line is identical as line footpath in Fig. 1
Distribution of Magnetic Field adjusts circle line thickness and line footpath.Fig. 2 show a kind of copper sheet coil in the prior art, and the width of circle line is equally from the beginning
It is equal everywhere to tail, cause coil overall current to be unevenly distributed, temperature is high after coil panel is powered.
As it can be seen that all there is obvious shortcomings in terms of current distribution for coil in the prior art.
Summary of the invention
In order to improve current distribution density in coil, current loss is reduced, the utility model provides a kind of electromagnetic coil, leads to
The improvement to circle line line width is crossed, solves the defect of the prior art.
Electromagnetic coil described in the utility model, including circle line are head positioned at one end of circle line outmost turns, are located at circle line
One end of innermost circle is tail portion, and the mean breadth of at least two circle circle lines since the tail portion is less than since the head
The mean breadth of at least two circle circle lines, the thickness of circle line are less than the average value of circle line width.The utility model is a kind of flat wire
Circle, generally construction thin in circle line outer width, due to the variation of circle line width, the current density passed through in coil can uniformly divide
Cloth, while decreasing current loss.
Preferably, the width of the circle line gradually broadens from tail portion to head.The embodiment of this kind of structure be compared with
Good embodiment, homogeneous current distribution degree is good, and the heating effect of coil is prominent.
Further, the mean breadth of at least two circle circle lines since the head is at least two since the tail portion
At least 1.5 times for enclosing the mean breadth of circle line.
Further, the spacing between circle line is less than the average value of circle line width, greater than the half of the electromagnetic coil thickness.
Further, the diameter of circle line innermost circle is greater than 10mm.
Preferably, the cross section of circle line be rectangle, it is trapezoidal, polygon any one.
Preferably, coil is circle.
The utility model improves coil Internal and external cycle current density by being specifically designed to circle line width, allows electricity
Levelling is distributed on circle line；Secondly, help to lower current loss, can effective control coil disk bulk temperature.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the winding type coil of the prior art one；
Fig. 2 is a kind of structural schematic diagram of the copper sheet coil of the prior art two；
Fig. 3 is the structural schematic diagram of an embodiment of the present invention；
Fig. 4 is the structure chart of another embodiment of the utility model；
Fig. 5 is the cross-sectional view of Fig. 4 embodiment；
Description of symbols:
1-circle line, 11-heads, 12-tail portions, 13-circle line spacing.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Embodiment 1
As shown in Fig. 3 the utility model proposes a kind of electromagnetic coil, be located at outmost turns 1 one end of circle line be head
Portion 11, positioned at 1 one end of circle line of innermost circle be tail portion 12, since tail portion 12 ing at least two circle circle lines mean breadth less than from
The mean breadth for at least two circle circle lines that head 11 starts.The width of circle line 1 can not be even variation, the coil in Fig. 3
Two circles since head 11 narrow from the width, and then broaden again；Two circles since tail portion 12 then gradually broaden, but whole presentation
Trend wide outside and narrow inside.Equally, can also be narrowed again by narrow broaden by 1 width of circle line of caudad 12, herein merely to saying
The invention thought of bright the utility model and for example, actual conditions are without being limited thereto, and the protection scope of the utility model is only by weighing
Benefit requires to determine.In the case where coil turn is greater than 4, except the middle section in addition to enclosing with tail portion two is enclosed on head two, circle line width can
To be unevenly to change, it is also possible to even variation, the width that width average value is greater than the two circle circle lines that tail portion starts is flat
Mean value, less than the width average value for the two circle circle lines that head starts.In the above case said, the thickness of circle line 1 is respectively less than circle line width
The average value of degree, i.e. electromagnetic coil sheet is as flatwise coil.
Change circle line width by above scheme, the homogeneous current distribution by coil can be made, and current loss drops
It is low.
Embodiment 2
As shown in figure 4, difference from Example 1 is, the coil of the present embodiment is from tail portion 12 to 11 circle line of head
The uniform increase of width gradually, it is most narrow at tail portion 12, it is most wide at head 11.This kind construction be the utility model electromagnetic coil most
Good embodiment.
By the coil of the present embodiment and circle line width in the prior art, equal coil carries out simulation comparison everywhere, as a result such as
Shown in table 1.
Table 1
As seen from the above table, the design wide outside and narrow inside by circle line significantly reduces the resistance value Rs (m Ω) of coil, and
It maintains coil inductance L (μ H) without significant change, so current density can be made more uniform, and reduce circle line heating problem.
In some embodiments, the average width of at least two circle circle lines 1 of the coil of the utility model since head 11
Degree encloses at least 1.5 times of the mean breadth of circle lines 1 at least two since tail portion 12.Circle line spacing 13 is less than 1 width of circle line
Average value, and be greater than electromagnetic coil thickness half, its smaller magnetic line of force of circle line spacing 13 be distributed more consistent, the resistance of coil
Value Rs then can be lower.The electromagnetic coil cross-sectional view of the present embodiment is as shown in Figure 5.
In some embodiments, the diameter of 1 innermost circle of circle line is greater than 10mm.The cross section of circle line 1 can be rectangle,
The flat patterns such as trapezoidal, polygon.
The electromagnetic coil of the utility model can be realized by winding or by printed coil, as heating equipment, charging
The elemental device in the fields such as equipment, transformer, application form is varied, and prospect is boundless.
Technological means disclosed in the utility model is not limited only to technological means disclosed in above embodiment, also
Including technical solution consisting of any combination of the above technical features.
Claims (7)
1. a kind of electromagnetic coil, including circle line are head positioned at one end of circle line outmost turns, one end positioned at circle line innermost circle is
Tail portion, which is characterized in that since the tail portion at least two circle circle lines mean breadths be less than since the head to
The mean breadth of few two circles circle line, the thickness of circle line are less than the average value of circle line width.
2. electromagnetic coil according to claim 1, which is characterized in that the width of the circle line gradually becomes from tail portion to head
It is wide.
3. electromagnetic coil according to claim 1 or 2, which is characterized in that at least two circle circle lines since the head
Mean breadth be at least 1.5 times of mean breadth of at least two circle circle lines since the tail portion.
4. electromagnetic coil according to claim 1 or 2, which is characterized in that the spacing between circle line is less than circle line width
Average value, greater than the half of the electromagnetic coil thickness.
5. electromagnetic coil according to claim 1 or 2, which is characterized in that the diameter of circle line innermost circle is greater than 10mm.
6. electromagnetic coil according to claim 1, which is characterized in that the cross section of circle line is rectangle, trapezoidal, polygon
Any one.
7. electromagnetic coil according to claim 1, which is characterized in that coil is circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920265885.6U CN209357540U (en) | 2019-03-04 | 2019-03-04 | A kind of electromagnetic coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920265885.6U CN209357540U (en) | 2019-03-04 | 2019-03-04 | A kind of electromagnetic coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209357540U true CN209357540U (en) | 2019-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920265885.6U Active CN209357540U (en) | 2019-03-04 | 2019-03-04 | A kind of electromagnetic coil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI740739B (en) * | 2020-12-01 | 2021-09-21 | 財團法人金屬工業研究發展中心 | Electromagnetic testing element and fabrication method thereof and thickness detection method |
| WO2023083180A1 (en) * | 2021-11-12 | 2023-05-19 | 上海微创惟美医疗科技(集团)有限公司 | Coil and winding method therefor, coil winding device, handle, and electronmagnetic generation apparatus |
-
2019
- 2019-03-04 CN CN201920265885.6U patent/CN209357540U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI740739B (en) * | 2020-12-01 | 2021-09-21 | 財團法人金屬工業研究發展中心 | Electromagnetic testing element and fabrication method thereof and thickness detection method |
| WO2023083180A1 (en) * | 2021-11-12 | 2023-05-19 | 上海微创惟美医疗科技(集团)有限公司 | Coil and winding method therefor, coil winding device, handle, and electronmagnetic generation apparatus |
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