CN110797175A - High-current low-height coil - Google Patents
High-current low-height coil Download PDFInfo
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- CN110797175A CN110797175A CN201911215542.XA CN201911215542A CN110797175A CN 110797175 A CN110797175 A CN 110797175A CN 201911215542 A CN201911215542 A CN 201911215542A CN 110797175 A CN110797175 A CN 110797175A
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- coil
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- 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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
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- 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
-
- 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
- H01F27/32—Insulating of coils, windings, or parts thereof
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The invention relates to the technical field of electronic components, in particular to a high-current low-height coil. It includes: an input terminal, a coil part, and an output terminal; the coil portion includes: the winding structure comprises a plurality of windings with the same specification and without spanning layers and a connecting block arranged between two adjacent windings, wherein the two adjacent windings are parallel to each other and are provided with intervals, and the two adjacent windings are electrically connected through the connecting block; the height of the coil part is H ═ n × M + (n-1) × d, and 2 ≦ n <1+ M/d, where n is the number of windings, M is the height of the windings, and d is the distance between two adjacent windings. The windings of the embodiment are parallel to each other and do not span layers, the inclined sections among the traditional coil parts are eliminated, and the height of the coil parts can be minimized by controlling the number of the windings, so that the use of materials is reduced, and the production cost is reduced. Meanwhile, the volume of the coil part is reduced, so that the window utilization rate of the magnetic core is increased.
Description
Technical Field
The invention relates to the technical field of electronic components, in particular to a high-current low-height coil.
Background
Inductors are the most common electronic components and are of a wide variety. The most common inductors are round enameled copper wires wound into coil sections with magnetic cores mounted inside or outside the coil sections. Along with switching power supply's operating frequency constantly improves, the electric current of coil portion is bigger and bigger, and the coil portion of the coiling of conventional enameled round wire can not satisfy the requirement of less volume and higher current density, therefore the market has developed flat enameled copper wire coil portion, compares in circular enameled wire coil portion, has improved the utilization ratio in magnetic core wire winding space, under the unchangeable condition of inductance overall dimension, the increase electric current of great degree.
However, the conventional coil part is mainly formed by winding a flat enameled copper wire in multiple layers by both of the vertical winding and the horizontal winding, and since the coil part spans the layers, the actual number of turns of the coil part is always 1 more than that of the coil part in both the horizontal winding and the vertical winding, thereby increasing the volume of the coil part and increasing the production cost of the coil part.
Therefore, there is a need for a high current low height coil that reduces the volume and production cost of the coil part.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art and provide a high-current low-height coil which has the advantages of reducing the volume of a coil part and reducing the production cost of the coil part.
In order to achieve the purpose, the invention adopts the technical scheme that:
a high current, low height coil comprising: the input end and the output end are respectively and electrically connected with two ends of the coil part;
the coil portion includes: the winding structure comprises a plurality of windings with the same specification and without spanning layers and a connecting block which is arranged between two adjacent windings and is used for connecting the two adjacent windings, wherein the two adjacent windings are parallel to each other and are provided with intervals, and the two adjacent windings are electrically connected through the connecting block;
the height of the coil part is H ═ n × M + (n-1) × d, and 2 ≦ n <1+ M/d, where n is the number of windings, M is the height of a single winding, and d is the distance between two adjacent windings.
Preferably, the winding is subjected to an insulation treatment in advance.
Preferably, the coil part further includes: and the connecting block is arranged between two adjacent windings and is used for connecting the two adjacent windings, and one winding is electrically connected with the other winding through the connecting block.
Preferably, the connecting block is formed by extending one winding towards the other winding in two adjacent windings.
Preferably, the winding and the connecting block are formed by winding a flat enameled wire.
Preferably, the winding and the connecting block are formed by winding a copper sheet.
Preferably, the copper sheet is subjected to tin plating treatment in advance before winding and forming the winding.
Preferably, the input and output terminals are provided as a patch mounting structure or a straight pin mounting structure.
After the technical scheme is adopted, the invention has the beneficial effects that:
the windings of the embodiment are parallel to each other and do not span layers, the inclined sections among the traditional coil parts are eliminated, and the height of the coil parts can be minimized by controlling the number of the windings, so that the use of materials is reduced, and the production cost is reduced. Meanwhile, the volume of the coil part is reduced, so that the window utilization rate of the magnetic core is increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a high current low height coil of the present invention provided with a patch mounting structure;
FIG. 2 is a schematic structural view of a high current low height coil of the present invention provided with a straight pin structure;
FIG. 3 is a schematic diagram of a coil part provided with a patch mounting structure according to the present invention;
FIG. 4 is a schematic view showing a structure of a coil part provided with a straight pin mounting structure according to the present invention;
reference numerals: 10. an input end; 20. a coil section; 21. a winding; 22. connecting blocks; 30. an output end; 40. a magnetic core; a. and (4) spacing.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment as necessary without making a contribution thereto after reading the present specification, but all are protected by patent laws within the scope of the claims of the present invention.
As shown in fig. 1-4, the present invention relates to a high current low height coil for placement inside or outside a magnetic core 40 to form an inductor, wherein in this embodiment for placement inside the magnetic core 40. It includes: an input terminal 10, a coil section 20, and an output terminal 30, wherein the input terminal 10 and the output terminal 30 are electrically connected to both ends of the coil section 20, respectively. The coil section 20 includes: the coil comprises a plurality of windings 21 with the same specification and without layer crossing (the term "without layer crossing" means that each winding 21 only forms one turn of the coil part 20) and a connecting block 22 arranged between two adjacent windings 21, wherein the two adjacent windings 21 are parallel to each other, a gap a is arranged between the two adjacent windings 21, and the two adjacent windings 21 are electrically connected through the connecting block 22. The height of the coil portion 20 is H ═ n × M + (n-1) × d, where n is the number of windings 21, M is the height of a single winding 21, and 2 ≦ n <1+ M/d, where d is the pitch between two adjacent windings 21.
Based on the above structure, the coil part 20 in the prior art mainly includes two winding methods: vertical winding and horizontal winding. Wherein the vertical winding means that: since the winding direction is perpendicular to the width plane of the wire (which may be a flat enameled wire), when the coil section 20 is wound vertically: the height of the coil part 20 of the present embodiment is H ═ n × M + (n-1) × D, where M ═ D, where D is the thickness of the flat enameled wire in the present embodiment; the height of the coil portion 20 in the prior art is H ═ T × (n +1), and T is the thickness of the flat enamel wire in the prior art. Therefore, when D ≦ T, 2 ≦ n <1+ M/D, the height of the coil portion 20 of the present embodiment is lower than that of the coil portion 20 of the related art. Wherein the level winding means that: since the winding direction is parallel to the width plane of the wire, when the coil section 20 is wound flat: the coil part 20 of the present embodiment has a height H ═ n × M + (n-1) × d, where M ═ L, where L is the width of the flat enameled wire in the present embodiment; and the height of the coil part 20 in the prior art is H ═ W × (n +1), and W is the width of the flat enamel wire in the prior art. When L ≦ W, the coil part 20 of the present embodiment has a height lower than that of the coil part 20 in the related art when 2 ≦ n <1+ M/d. Wherein, according to the actual situation, d is 0.2-0.6mm, and the specific data is shown in the table:
based on this, the windings 21 of the present embodiment are parallel to each other and do not span layers, thereby eliminating the inclined section between the conventional coil portions 20, and simultaneously ensuring the interval a between the windings 21 to minimize the height of the coil portion 20, thereby reducing the material usage and the production cost. Meanwhile, since the volume of the coil part 20 is reduced, the window utilization rate of the magnetic core is increased.
To further optimize the coil part 20 of the present embodiment, the winding 21 of the present embodiment is subjected to an insulation process in advance. Based on the above configuration, the winding 21 is subjected to the insulation process in advance, and it is not necessary to provide the interval a to prevent the coil portion 20 from short-circuiting, so the size of the interval a may be set to 0, that is, d is 0. When the winding 21 is formed by wire winding, the height of the coil part 20 of the present embodiment is H ═ n × D + (n-1) × 0 ═ n × D, and the height of the coil part 20 of a general product is H ═ T × (n +1), and when D ═ T, it can be directly judged that the height of the coil part 20 of the present embodiment is smaller than the height of the coil part 20 of the general product. When the winding 21 is formed by vertical winding of a wire, the height of the coil part 20 of the present embodiment is H ═ n × L + (n-1) × 0 ═ n × L, and the height of the coil part 20 of a general product is H ═ W × (n +1), and when L ═ W, it can be directly determined that the height of the coil part 20 of the present embodiment is smaller than the height of the coil part 20 of the general product. Accordingly, by performing the insulation process on the winding 21 in advance, the height of the coil part 20 of the present embodiment is always low as the height of the coil part 20 of the prior art (in this case, the values of n are not required to be considered when the heights of the two coil parts 20 are compared), so that, when the coil part 20 of the present embodiment is manufactured, the number of the windings 21 of the coil part 20 does not need to be calculated (because the number of the windings 21 needs to be considered to save the cost), the winding can be directly performed, and the manufacturing process of the coil part 20 is simplified.
To facilitate the preparation of the coil part 20, the connection block 22 of the present embodiment may be formed by extending one winding 21 of two adjacent windings 21 toward the other winding 21. Based on the above structure, the winding 21 and the connection block 22 may be provided as an integrally formed structure, so that the coil part 20 may be rapidly manufactured through stamping, die sinking, machining, and the like.
In order to speed up the preparation of the coil part 20, the winding 21 and the connection block 22 of the present embodiment are preferably formed by winding a flat enameled wire.
In order to further reduce the production cost, the winding 21 and the connecting block of the embodiment are formed by winding a copper sheet. Based on the structure, the copper sheet has no paint coating, so that the paint coating does not need to be removed, the optimized process flow is realized, the related costs of equipment, clamps, labor and the like in the manufacturing process are saved, and the production cost of the product is greatly reduced on the whole.
In order to simplify the process flow and increase the processing speed, the copper sheet of this embodiment is pre-tinned before winding the formed winding 21. Based on the structure, the copper sheet is tinned in advance, so the copper sheet does not need to be tinned after being wound to form the winding 21. Meanwhile, after the copper sheet is bent to form the winding 21, the problem of incomplete tinning can be caused, so that the tinning of the copper sheet can be ensured completely, and the service life of the high-current low-height coil of the embodiment is further prolonged.
To facilitate the application of the high-current low-height coil to various scenes, the input terminal 10 and the output terminal 30 of the present embodiment may be provided as a chip mounting structure or a straight pin mounting structure as a preferable scheme.
In order to make the winding 21 conform to the structure of the inner opening of the magnetic core 40, the winding 21 of the present embodiment may be preferably provided in a rectangular shape, a circular shape, and a polygonal shape.
The large-current low-height coil of the embodiment can be applied to various fields such as inductors, transformers, reactors and the like.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered by the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. A high current, low height coil, comprising: the coil comprises an input end (10), a coil part (20) and an output end (30), wherein the input end (10) and the output end (30) are respectively and electrically connected with two ends of the coil part (20);
the coil part (20) includes: the winding structure comprises a plurality of windings (21) with the same specification and without spanning layers and a connecting block (22) arranged between two adjacent windings (21), wherein the two adjacent windings (21) are parallel to each other and provided with an interval (a), and the two adjacent windings (21) are electrically connected through the connecting block (21);
the height of the coil part (20) is H ≦ n × M + (n-1) × d, and 2 ≦ n <1+ M/d, where n is the number of windings (21), M is the height of a single winding (21), and d is the pitch between two adjacent windings (21).
2. A high current low height coil according to claim 1 wherein said winding (21) is pre-insulated.
3. A high current low height coil according to claim 1 wherein the connection block (22) is formed by extending one (21) of two adjacent windings (21) towards the other winding (21).
4. A high current low height coil according to claim 3 wherein said winding (21) and connection block (22) are formed from a flat enameled wire wound around the coil.
5. A high current low height coil according to claim 3 wherein said winding (21) and connection block (22) are formed from a sheet of copper by winding.
6. A high current low height coil according to claim 5 wherein said copper sheet is pre-tinned prior to winding the shaped winding (21).
7. A high current low height coil according to claim 1 wherein the input (10) and output (30) terminals are provided in a chip mount configuration or a straight pin mount configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911215542.XA CN110797175A (en) | 2019-12-02 | 2019-12-02 | High-current low-height coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911215542.XA CN110797175A (en) | 2019-12-02 | 2019-12-02 | High-current low-height coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110797175A true CN110797175A (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911215542.XA Pending CN110797175A (en) | 2019-12-02 | 2019-12-02 | High-current low-height coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110797175A (en) |
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2019
- 2019-12-02 CN CN201911215542.XA patent/CN110797175A/en active Pending
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| TA01 | Transfer of patent application right |
Effective date of registration: 20200710 Address after: 610000 No. 19 Tianyu Road, West Zone, hi tech Zone, Sichuan, Chengdu Applicant after: SICHUAN ZHONGGUANG LIGHTNING PROTECTION TECHNOLOGIES Co.,Ltd. Address before: 518000 501, building 2, shengdeyuan, Shenzhen Bay Garden, Shahe, Nanshan District, Shenzhen City, Guangdong Province Applicant before: Liu Yong |
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