Coil winding structure, coil and fault monitoring device
By setting through holes on the Rogowski coil skeleton and reversing the winding direction of the coil turns, combined with the serrated hole distribution, the problems of low measurement accuracy and insufficient anti-interference ability of the Rogowski coil are solved, achieving higher measurement accuracy and anti-interference effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-03-20
AI Technical Summary
Existing Rogowski coil winding structures are difficult to guarantee measurement accuracy in wind power generation systems, and their ability to resist external interference magnetic fields is insufficient.
By using a skeleton with several through holes, and the outgoing and returning wires wound in opposite directions, combined with the sawtooth-shaped distribution of holes, a uniform wire winding structure is formed, which improves the anti-interference ability.
The uniform winding structure improves the measurement accuracy and anti-interference capability of the Rogowski coil in complex electromagnetic environments.
Smart Images
Figure CN224020559U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of electronic equipment technology, and in particular relates to a coil winding structure, a coil, and a fault monitoring device. Background Technology
[0002] Rogowski coils are widely used in the monitoring of fault current in collector lines of wind power generation systems due to their advantages such as good linearity, small size, light weight and no magnetic saturation.
[0003] A common Rogowski coil winding structure involves directly winding coil turns around the surface of the bobbin and adding a loop return, such as... Figure 1 As shown. This winding structure makes it difficult to ensure the uniformity of each coil turn, and the return line is too coarse, resulting in insufficient ability to resist external interference magnetic fields. Especially when applied in complex electromagnetic environments such as wind power generation systems, it will seriously affect the measurement accuracy of the Rogowski coil. Utility Model Content
[0004] This application provides a coil winding structure designed to address the problem of low measurement accuracy in existing coil winding structures.
[0005] This application provides a coil winding structure, comprising:
[0006] The skeleton has an outer ring surface and an inner ring surface;
[0007] Several through holes are provided on the skeleton, each through hole comprising two parts respectively near the outer annular surface and the inner annular surface; and
[0008] The wire coils wound on the skeleton include outgoing and returning wires passing through through holes, with the outgoing and returning wires wound in opposite directions.
[0009] Furthermore, the through holes near the inner annular surface include a first hole, a second hole, and a third hole that are annular and have progressively increasing diameters. The first hole and the third hole are wire turn-out holes, the second hole is a wire turn-back hole, and the through holes near the outer annular surface are common end holes.
[0010] Furthermore, the through holes near the outer ring surface are arranged in pairs, including a group of outgoing holes and a group of returning holes, with the groups of outgoing holes and returning holes alternating between each other.
[0011] Furthermore, the connecting holes between two adjacent sets of outgoing wire holes are inclined, and the connecting holes between two adjacent sets of return wire holes are also inclined.
[0012] Furthermore, the through holes between the first, second, and third holes are arranged in a zigzag pattern, alternating sequentially.
[0013] Further, the skeleton comprises two arc-shaped frames in a semi-circular ring shape.
[0014] Further, the turns arranged on the two arc-shaped frames are connected in series.
[0015] Further, the skeleton is a printed circuit board.
[0016] In a second aspect, the application further provides a coil, comprising:
[0017] a plastic shell having an annular accommodating cavity; and
[0018] the coil winding structure as described above arranged in the annular accommodating cavity.
[0019] In a third aspect, the application further provides a fault monitoring device, comprising the coil as described above.
[0020] The application has the following beneficial effects: the coil winding structure provided by the application comprises a skeleton, the skeleton has an outer ring surface and an inner ring surface; a plurality of through holes arranged on the skeleton, the through holes comprise two parts respectively close to the outer ring surface and the inner ring surface; and turns wound on the skeleton, the turns comprise outgoing line routes and return line routes wound in the through holes, and the winding directions of the outgoing line routes and the return line routes are opposite. The outgoing line routes and the return line routes are formed by winding the turns according to the through holes, which ensures the uniformity of the winding of the turns, improves the anti-interference ability to the external environment magnetic field, and ensures the measurement accuracy of the coil. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 is a structural schematic diagram of a prior art Rogowski coil;
[0022] Figure 2 is a structural schematic diagram of a skeleton of an embodiment of the coil winding structure provided by the application;
[0023] Figure 3 is a structural schematic diagram of the through holes arranged on the skeleton of an embodiment of the coil winding structure provided by the application;
[0024] Figure 4 is a structural schematic diagram of the distribution of the through holes of an embodiment of the coil winding structure provided by the application;
[0025] Figure 5 is a winding structural schematic diagram of the outgoing line routes of an embodiment of the coil winding structure provided by the application;
[0026] Figure 6 is a winding structural schematic diagram of the return line routes of an embodiment of the coil winding structure provided by the application;
[0027] Figure 7is a structure schematic diagram of a winding turn of a skeleton of an embodiment of the coil winding structure provided by the present application;
[0028] Figure 8 is a partial sectional view schematic diagram of an embodiment of the coil winding structure provided by the present application;
[0029] Figure 9 is a structure schematic diagram of a half-opened structure of an embodiment of the coil winding structure provided by the present application.
[0030] Legend: 100-skeleton, 110-arc-shaped frame, 200-through hole, 210-first hole, 220-second hole, 230-third hole, 240-fourth hole, 201-wire removing hole group, 202-wire returning hole group, 300-winding turn, 310-wire removing line, 320-wire returning line. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. The examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation to the present application. In addition, it should be understood that the specific embodiments described herein are only used to explain the present application, and cannot be used to limit the present application.
[0032] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the present application.
[0033] In addition, the terms "first", "second" are only used for description purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0034] In the description of the application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.
[0035] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0036] The following disclosure provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of the application, the components and arrangements of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the application. In addition, the application can repeatedly refer to numerical values and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, the application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.
[0037] The coil winding structure provided by the application comprises a skeleton, the skeleton has an outer ring surface and an inner ring surface; a plurality of through holes are arranged on the skeleton, the through holes comprise two parts respectively close to the outer ring surface and the inner ring surface; and a winding is wound on the skeleton, the winding comprises a wire removal line and a wire return line, and the winding directions of the wire removal line and the wire return line are opposite. The wire removal line and the wire return line are formed by winding the winding according to the through hole, which ensures the uniformity of the winding of the winding, improves the anti-interference ability to the external environment magnetic field, and ensures the measurement accuracy of the coil.
[0038] As shown in FIG. 1, one embodiment of the application provides a coil winding structure, which comprises: Figures 2 to 9
[0039] A skeleton 100, the skeleton 100 has an outer ring surface and an inner ring surface;
[0040] A plurality of through holes 200 are arranged on the skeleton 100, the through holes 200 include two parts close to the outer ring surface and the inner ring surface respectively; and
[0041] The turns 300 are wound on the skeleton 100, the turns 300 include the outgoing wire line 310 and the return wire line 320 which are arranged in the through holes 200, and the winding directions of the outgoing wire line 310 and the return wire line 320 are opposite.
[0042] In implementation, the skeleton 100 of the coil winding structure provided by the present application is used to support the turns 300, wherein the skeleton 100 is in the shape of a whole ring, the wire line can be wound on the skeleton 100 to form the turns 300, and the wire line is made of enameled wire, so that the function of the induced magnetic field is realized.
[0043] Optionally, the skeleton 100 can be made of an iron core, plastic or a PCB (Printed Circuit Board), preferably a PCB, without specific limitation.
[0044] Optionally, the skeleton 100 includes two arc-shaped frames 110 in the shape of a half ring, as shown in Figure 2 for easy installation.
[0045] A plurality of through holes 200 are arranged on the skeleton 100, wherein a part of the through holes 200 are distributed close to the outer ring surface, and another part of the through holes 200 are distributed close to the inner ring surface. The wire line is arranged in the through holes 200 to be wound and fixed on the skeleton 100, wherein the wire line passes through the through holes 200 in a first direction to be wound on the skeleton 100 to form the outgoing wire line 310, and then passes through the through holes 200 in a second direction to be wound on the skeleton 100 to form the return wire line 320, the first direction and the second direction are opposite, as shown in Figure 5 and Figure 6 The first direction is a1, and the second direction is a2, that is, the winding directions of the outgoing wire line 310 and the return wire line 320 are opposite.
[0046] Optionally, at least part of the plurality of through holes 200 are uniformly distributed on the skeleton 100, preferably all the through holes 200 are uniformly distributed on the skeleton 100. Wherein, the part of the through holes 200 distributed close to the outer ring surface are in the shape of a uniformly distributed ring, and the other part of the through holes 200 distributed close to the inner ring surface are also in the shape of a uniformly distributed ring, to ensure the uniformity of the winding of the turns 300. The present application ensures the uniformity of the winding of the turns 300 by winding the wire line according to the through holes 200 to form the outgoing wire line 310 and the return wire line 320, improves the anti-interference ability to the external environment magnetic field, and ensures the measurement accuracy of the coil.
[0047] Further, the through holes 200 close to the inner annular surface are divided into first holes 210, second holes 220 and third holes 230, the first holes 210, the second holes 220 and the third holes 230 are annular, the through holes 200 close to the outer annular surface can be regarded as fourth holes 240, and the diameters of the first holes 210, the second holes 220, the third holes 230 and the fourth holes 240 increase in turn, as shown in FIG. 3. Figure 3 The first holes 210 and the third holes 230 are wire removing holes, the second holes 220 are wire returning holes, and the fourth holes 240 are common end holes.
[0048] In implementation, the through holes 200 in the fourth holes 240 are divided into wire removing hole groups 201 and wire returning hole groups 202, and the wire removing hole groups 201 and the wire returning hole groups 202 are alternately distributed. Further, the through holes 200 between the first holes 210, the second holes 220 and the third holes 230 are alternately distributed in a zigzag shape, as shown in FIG. 4. Figure 4
[0049] It should be noted that Figure 3 and Figure 4 The dashed lines shown in FIGS. 5 and 6 are for easy understanding, and do not exist in practice.
[0050] Exemplarily, taking a half-turn wire 300 as an example, first, the wire removing wire 300 is wound according to the first holes 210, the third holes 230 and the fourth holes 240 in turn, and the wire removing wire 300 passes through the through holes 200 in the order of the wire removing hole of the fourth hole 240, then the first hole 210, the fourth hole 240 and the third hole 230, and so on, until the whole half-turn is wound, as shown in FIG. 5. Figure 5
[0051] After the wire removing wire 300 is wound, the wire returning wire 300 is wound according to the second holes 220 and the fourth holes 240 in turn from the end of the half-turn, and the wire returning wire 300 passes through the through holes 200 in the order of the wire returning hole of the fourth hole 240, then the second hole 220, the fourth hole 240 and the second hole 220, and so on, until the whole half-turn is wound, as shown in FIG. 6. Figure 6 Figure 7
[0052] The connecting holes between the adjacent two wire removing hole groups 201 are obliquely arranged, and the connecting holes between the adjacent two wire returning hole groups 202 are obliquely arranged, as shown in FIG. 7. Figure 8
[0053] In some embodiments, the turns 300 arranged on the two arc-shaped frames 110 are connected in series between the turns 300, that is, the positive poles of the two half-turn turns 300 are connected with each other, and the negative poles are connected with each other, that is, the outgoing line 310 of one half-turn turn 300 is connected with the outgoing line 310 of the other half-turn turn 300, and the return line 320 of one half-turn turn 300 is connected with the return line 320 of the other half-turn turn 300, as shown in Figure 9
[0054] It should be noted that the winding order of the outgoing line 310 and the return line 320 can be reversed, which does not affect the winding structure.
[0055] In a second aspect, the present application also provides a coil, comprising:
[0056] a plastic shell (not shown in the figure), the plastic shell having an annular accommodating cavity; and
[0057] the coil winding structure as described above arranged in the annular accommodating cavity.
[0058] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the structure and implementation principle of the coil described above can refer to the corresponding structure and implementation principle in the foregoing embodiments, which will not be repeated here.
[0059] The coil winding structure provided by the present application comprises a framework 100, the framework 100 having an outer ring surface and an inner ring surface; a plurality of through holes 200 arranged on the framework 100, the through holes 200 comprising two parts respectively close to the outer ring surface and the inner ring surface; and a turn 300 wound on the framework 100, the turn 300 comprising an outgoing line 310 and a return line 320 threaded in the through hole 200, the winding directions of the outgoing line 310 and the return line 320 being opposite. The outgoing line 310 and the return line 320 are formed by winding the turn 300 according to the through hole 200, which ensures the uniformity of the winding of the turn 300, improves the anti-interference ability to the external environment magnetic field, and ensures the measurement accuracy of the coil.
[0060] In a third aspect, the present application also provides a fault monitoring device, comprising the coil as described above.
[0061] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the structure and implementation principle of the fault monitoring device described above can refer to the corresponding structure and implementation principle in the foregoing embodiments, which will not be repeated here.
[0062] The coil winding structure provided by the application comprises a framework 100, the framework 100 has an outer ring surface and an inner ring surface; a plurality of through holes 200 arranged on the framework 100, the through holes 200 comprise two parts close to the outer ring surface and the inner ring surface respectively; and a winding 300 wound on the framework 100, the winding 300 comprises a wire removal line 310 and a wire return line 320, the winding directions of the wire removal line 310 and the wire return line 320 are opposite. The wire removal line 310 and the wire return line 320 are formed by winding the winding 300 according to the through holes 200, the uniformity of the winding of the winding 300 is ensured, the anti-interference ability to the external environment magnetic field is improved, and the measurement accuracy of the coil is ensured.
[0063] The above is only a preferred embodiment of the application, and is not used to limit the application, any modification, equivalent replacement and improvement made within the spirit and principle of the application should be included in the protection scope of the application.
Claims
1. A coil winding structure, characterized in that, include: A skeleton having an outer annular surface and an inner annular surface; A plurality of through holes are provided on the skeleton, each through hole comprising two portions that are respectively close to the outer annular surface and the inner annular surface and are evenly distributed thereon; and The wire loops wound around the skeleton include outgoing and returning wires passing through the through holes, and the outgoing and returning wires are wound in opposite directions.
2. The coil winding structure as described in claim 1, characterized in that, The through hole near the inner annular surface includes a first hole, a second hole, and a third hole that are annular and have progressively increasing diameters. The first hole and the third hole are wire turnout holes, the second hole is a wire turn return hole, and the through hole near the outer annular surface is a common end hole.
3. The coil winding structure as described in claim 2, characterized in that, The through holes near the outer annular surface are arranged in pairs, including a wire-removing hole group and a wire-returning hole group, which are alternately distributed.
4. The coil winding structure as described in claim 3, characterized in that, The connecting holes between two adjacent sets of the outgoing wire hole group are inclined, and the connecting holes between two adjacent sets of the return wire hole group are inclined.
5. The coil winding structure as described in claim 2, characterized in that, The through holes between the first, second, and third holes are arranged in a serrated pattern.
6. The coil winding structure as described in claim 1, characterized in that, The skeleton comprises two arc-shaped frames that form a semi-circular ring.
7. The coil winding structure as described in claim 6, characterized in that, The coils arranged on the two arc-shaped frames are connected in series.
8. The coil winding structure as described in any one of claims 1 to 6, characterized in that, The skeleton is a printed circuit board.
9. A coil, characterized in that, include: A plastic housing having an annular receiving cavity; as well as The coil winding structure as described in any one of claims 1 to 8 is disposed in the annular receiving cavity.
10. A fault monitoring device, characterized in that, Includes the coil as described in claim 9.