Electromagnetic winding assembly and electromagnetic element

Abstract

The utility model provides an electromagnetic winding assembly and an electromagnetic element, the electromagnetic winding assembly comprises a first magnetic ring and a coil, the coil comprises a first winding and a second winding, the first winding is wound on a first area of the first magnetic ring, the second winding is wound on a second area of the first magnetic ring, and the first area and the second area are arranged along the annular direction of the first magnetic ring. And the first winding and the second winding are arranged at intervals. The first winding and the second winding are arranged at intervals and are respectively arranged in the first area and the second area on the first magnetic ring, so that the coupling capacitance between the first winding and the second winding is reduced, and meanwhile, the voltage resistance of the electromagnetic winding assembly is improved.

Description

Technical Field

[0001] The present application relates to the field of electromagnetic technology, and in particular to an electromagnetic winding assembly and an electromagnetic element. Background Art

[0002] Electromagnetic winding components are widely used in the fields of computers, medical equipment, telecommunications, instruments, lighting, automobiles and energy storage due to their excellent performance. Especially in the automotive field, electromagnetic winding components are usually required to have high voltage resistance. However, the winding method of existing electromagnetic winding components usually makes the first winding and the second winding contact each other, resulting in increased capacitive coupling between the first winding and the second winding, resulting in poor voltage resistance of the electromagnetic winding components and failure to meet partial discharge requirements. Utility Model Content

[0003] In view of this, the present application provides an electromagnetic winding assembly and an electromagnetic element to improve the voltage resistance performance of the electromagnetic winding assembly and meet the partial discharge requirements.

[0004] The present application provides an electromagnetic winding assembly, characterized in that it includes a first magnetic ring and a coil, the coil includes a first winding and a second winding, the first winding is wound around a first area on the first magnetic ring, the second winding is wound around a second area on the first magnetic ring, the first area and the second area are arranged along the circumferential direction of the first magnetic ring, and the first winding and the second winding are arranged at intervals.

[0005] In some embodiments, the first region and the second region are symmetrically arranged on the first magnetic ring.

[0006] In some embodiments, the electromagnetic winding assembly also includes a second magnetic ring, the diameter of the second magnetic ring is smaller than the diameter of the first magnetic ring, the second winding includes a first winding part and a second winding part connected to the first winding part, the first winding part is wound on the first magnetic ring, and the second winding part is wound on the second magnetic ring.

[0007] In some embodiments, the second magnetic ring is disposed on a side of the second region facing away from the first region.

[0008] In some embodiments, it is characterized in that the minimum distance between the first winding and the second winding is greater than or equal to 0.3 mm.

[0009] In some embodiments, the electromagnetic winding assembly further includes a baffle, the baffle is connected to the inner wall of the first magnetic ring, and the first winding and the second winding are respectively located on both sides of the baffle.

[0010] In some embodiments, the first winding and the second winding are both formed by winding at least one conductive wire.

[0011] In some embodiments, a wire diameter of the first winding is greater than a wire diameter of the second winding.

[0012] In some embodiments, the conductive wires forming the first winding and the second winding include a conductor and an insulating layer covering the outside of the conductor, and the thickness of the insulating layer is greater than or equal to 3 μm.

[0013] The present application also provides an electromagnetic component, comprising the electromagnetic winding assembly as described above.

[0014] The present application provides an electromagnetic winding assembly and an electromagnetic element, comprising a first magnetic ring and a coil, wherein the coil comprises a first winding and a second winding, wherein the first winding is wound on a first region on the first magnetic ring, and the second winding is wound on a second region on the first magnetic ring, wherein the first region and the second region are arranged along the circumferential direction of the first magnetic ring, and the first winding and the second winding are arranged at intervals. By arranging the first winding and the second winding at intervals and respectively arranging them on the first region and the second region on the first magnetic ring, the coupling capacitance between the first winding and the second winding is reduced, and at the same time, the withstand voltage performance of the electromagnetic winding assembly is improved and the partial discharge requirements are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic diagram of the structure of an electromagnetic winding assembly provided by the present application;

[0017] Reference numerals:

[0018] 10. Electromagnetic winding assembly; 100. First magnetic ring; 200. First winding; 300. Second winding; 310. First winding portion; 320. Second winding portion; 400. Second magnetic ring; 500. Housing; 510. Accommodating groove; 520. Winding foot. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application are clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In the absence of conflict, the following embodiments and their technical features can be combined with each other.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the description of the present application, the meaning of "several" is at least one, such as one, two, etc., unless otherwise clearly and specifically defined.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by a person skilled in the art to which this application belongs. The terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items. The terms "connection", "electrical connection", and "electrical connection" used herein include any direct and indirect electrical or structural connection means. Therefore, if the text describes a first device coupled / connected / electrically connected to a second device, it means that the first device can be directly electrically / structurally connected to the second device, or indirectly electrically / structurally connected to the second device through other devices or connection means.

[0022] The present application provides an electromagnetic winding assembly, including a first magnetic ring and a coil, the coil including a first winding and a second winding, the first winding is wound around a first area on the first magnetic ring, the second winding is wound around a second area on the first magnetic ring, the first area and the second area are arranged along the circumferential direction of the first magnetic ring, and the first winding is spaced apart from the second winding.

[0023] In the present application, the first winding and the second winding are separately arranged in two different areas on the first magnetic ring to reduce the coupling capacitance between the first winding and the second winding, while improving the withstand voltage performance of the electromagnetic winding assembly and meeting the local discharge requirements.

[0024] See also Figure 1 , Figure 11 is a schematic diagram of the structure of an electromagnetic winding assembly provided by the present application. The present application provides an electromagnetic winding assembly 10, comprising a first magnetic ring 100 and a coil, the coil comprising a first winding 200 and a second winding 300, the first winding 200 is wound on a first area on the first magnetic ring 100, the second winding 300 is wound on a second area on the first magnetic ring 100, the first area and the second area are arranged along the circumferential direction of the first magnetic ring 100, and the first winding 200 and the second winding 300 are arranged at intervals, that is, the first winding 200 is wound on one area of ​​the first magnetic ring 100, the second winding 300 is wound on another area of ​​the first magnetic ring 100, and the first winding 200 and the second winding 300 are not in contact. The magnetic ring can be made of ferrite or neodymium iron boron.

[0025] In the present application, the first winding 200 and the second winding 300 are separately arranged in two different areas on the first magnetic ring 100 to increase the distance between the first winding 200 and the second winding 300, thereby reducing the coupling capacitance between the first winding 200 and the second winding 300. The reduction in coupling capacitance means that the current transmitted between the first winding 200 and the second winding 300 through the capacitor will also be reduced, that is, the leakage current is reduced, and the risk of short circuit and breakdown between the first winding 200 and the second winding 300 is reduced, thereby improving the voltage resistance performance of the electromagnetic winding assembly 10.

[0026] In addition, by reducing the coupling capacitance between the first winding 200 and the second winding 300 , the influence of electromagnetic interference and radio frequency interference can be reduced, which is further beneficial to improving the voltage resistance performance of the electromagnetic winding assembly 10 .

[0027] In the present application, by separately arranging the first winding 200 and the second winding 300 in two different areas on the first magnetic ring 100, the electric field is distributed more evenly on the magnetic ring, thereby avoiding excessive concentration of the electric field in certain areas and reducing the risk of local discharge, thereby improving the voltage resistance performance of the electromagnetic winding assembly 10.

[0028] In one embodiment, the first winding 200 and the second winding 300 are symmetrically arranged on the first magnetic ring 100 to further increase the distance between the first winding 200 and the second winding 300, thereby further reducing the coupling capacitance between the first winding 200 and the second winding 300 and further reducing the risk of short circuit and breakdown between the first winding 200 and the second winding 300. At the same time, the impact of electromagnetic interference and radio frequency interference and the risk of local discharge are further reduced, thereby improving the voltage resistance performance of the electromagnetic winding assembly 10.

[0029] In one embodiment, the electromagnetic winding assembly 10 further includes a second magnetic ring 400, the diameter of the second magnetic ring 400 is smaller than the diameter of the first magnetic ring 100, the second winding includes a first winding portion 310 and a second winding portion 320 connected to the first and second winding portions 310, the first winding portion 310 is wound on the first magnetic ring 100, and the second winding portion 320 is wound on the second magnetic ring 400. In the present application, the second winding 300 is not only wound on the first magnetic ring 100, but also on the second magnetic ring 400, which optimizes the magnetic field distribution, thereby reducing the problems of magnetic leakage and electromagnetic interference, improving the filtering effect, and thus improving the reliability of the electromagnetic winding assembly 10.

[0030] In one embodiment, the second magnetic ring 400 is disposed on the side of the second region facing away from the first region, so that the second magnetic ring 400 can improve the filtering effect while avoiding the increase of the coupling capacitance between the first winding 200 and the second winding 300, and at the same time improve the voltage resistance performance of the device.

[0031] In one embodiment, the electromagnetic winding assembly 10 further includes a third magnetic ring, and the first winding 200 is also wound on the third magnetic ring. In the present application, the first winding 200 is not only wound on the first magnetic ring 100, but also wound on the third magnetic ring, which optimizes the magnetic field distribution, thereby reducing the problems of magnetic leakage and electromagnetic interference, improving the filtering effect, and thus improving the reliability of the electromagnetic winding assembly 10.

[0032] In one embodiment, the electromagnetic winding assembly 10 further includes a housing 500, the housing 500 has a receiving groove 510, the first magnetic ring 100 and the coil are both arranged in the receiving groove 510, and the wire head and wire tail of the coil are connected to the housing 500. Specifically, the first magnetic ring 100, the second magnetic ring 400 and the coil are arranged in the receiving groove 510, and the coil, the first magnetic ring 100 and the second magnetic ring 400 are protected to avoid damage, thereby ensuring the performance of the electromagnetic winding assembly 10 and improving the reliability of the electromagnetic winding assembly 10. Further, the first magnetic ring 100 is placed horizontally in the receiving groove 510, and the second magnetic ring 400 can be placed horizontally or vertically in the receiving groove 510; in this embodiment, the second magnetic ring 400 is placed vertically in the receiving groove 510 as an example for description.

[0033] In one embodiment, a wire winding foot 520 is provided on the housing 500, and the wire ends and wire tails are wound around the wire winding foot 520. Specifically, the wire winding foot 520 is provided on the outside of the housing 500 and is respectively located on two opposite sides of the housing 500. A limiting groove is provided on one side of the housing 500 where the wire winding foot 520 is provided and between each two adjacent wire winding feet 520. After the wire ends and wire tails pass through the limiting grooves, they are wound around the wire winding foot 520. The limiting grooves are used to fix the wires. For example, after the wire ends and wire tails of the wire forming the first winding 200 pass through the limiting grooves near one side of the first winding 200, they are wound around the wire winding foot 520 on one side of the housing 500, and after the wire ends and wire tails of the wire forming the second winding 300 pass through the limiting grooves near one side of the second winding 300, they are wound around the wire winding foot 520 on the other side of the housing 500.

[0034] In one embodiment, the wire diameter of the first winding 200 is greater than the wire diameter of the second winding 300, so that the first winding 200 can withstand a larger current without overheating or damage, thereby ensuring effective transmission of electrical energy.

[0035] In one embodiment, the minimum distance L between the first winding 200 and the second winding 300 is at least greater than or equal to 0.3 mm. Specifically, the minimum distance L between the first winding 200 and the second winding 300 can be 0.3 mm, 0.6 mm, 0.9 mm, 1.2 mm, 1.7 mm, 2 mm or 2.6 mm, etc., so as to further increase the distance between the first winding 200 and the second winding 300, thereby further reducing the coupling capacitance between the first winding 200 and the second winding 300 and further reducing the risk of short circuit and breakdown between the first winding 200 and the second winding 300, and at the same time, further reducing the impact of electromagnetic interference and radio frequency interference and the risk of partial discharge, thereby improving the withstand voltage performance of the electromagnetic winding assembly 10.

[0036] In one embodiment, the wire forming the first winding 200 and the second winding 300 is composed of a conductor and an insulating layer covering the outside of the conductor. Specifically, the conductor can be copper or other materials, which are not limited here. The insulating layer can be composed of a single-layer insulating film, and the material of the single-layer insulating film includes at least one of polyester, acetal and polyurethane; the insulating layer can also be composed of three layers of different insulating films, such as the insulating layer is composed of a polyamide film, a high-insulation spray paint coating and a transparent glass fiber layer, or the inner insulating film and the outer insulating film of the insulating layer are both composed of at least one of PE, PP and PVC. If the wire is a fully insulated wire, the insulation effect between the first winding 200 and the second winding 300 can be improved, thereby further improving the voltage resistance performance of the electromagnetic winding assembly 10.

[0037] In one embodiment, the thickness of the insulating layer is greater than or equal to 3 μm. Specifically, the thickness of the insulating layer can be 3 μm, 13 μm, 24 μm, 37 μm, 46 μm, 50 μm, 58 μm, 64 μm, 71 μm, 87 μm or 90 μm, etc. By increasing the thickness of the insulating layer of the wire, the insulation effect of the wire is increased, thereby further improving the withstand voltage performance of the electromagnetic winding assembly 10.

[0038] In one embodiment, the electromagnetic winding assembly 10 further includes a baffle, which is connected to the inner wall of the first magnetic ring 100, and the first winding 200 and the second winding 300 are respectively located on both sides of the baffle. Further, the baffle is arranged on the middle shaft of the first magnetic ring 100. In the present application, by arranging a baffle between the first winding 200 and the second winding 300, it is ensured that the first winding 200 and the second winding 300 are respectively wound on two areas on the first magnetic ring 100, avoiding contact between the first winding 200 and the second winding 300, improving the insulation performance between the first winding 200 and the second winding 300, and thus improving the voltage resistance performance of the electromagnetic winding assembly 10.

[0039] In one embodiment, the material of the baffle is metal, and the height of the baffle is greater than or equal to the sum of the thickness of the first magnetic ring 100 and the coil, so as to further improve the pressure resistance performance of the electromagnetic winding assembly 10 .

[0040] In one embodiment, the first winding 200 and the second winding 300 are both formed by winding at least one wire. For example, the first winding 200 and the second winding 300 can be formed by winding one, two, three or five wires. In this embodiment, the first winding 200 and the second winding 300 are both formed by winding two wires.

[0041] The present application also provides an electromagnetic component, including the electromagnetic winding assembly 10 provided in the present application. In the present application, the electromagnetic winding assembly 10 provided in the present application is used in the electromagnetic component because it has a high voltage resistance and can meet the local discharge requirements, so that the electromagnetic component has a high reliability and improves the performance of the electromagnetic component.

[0042] The present application provides an electromagnetic winding assembly 10 and an electromagnetic element, which increases the distance between the first winding 200 and the second winding 300 by separately arranging the first winding 200 and the second winding 300 in two different areas on the first magnetic ring 100, thereby reducing the coupling capacitance between the first winding 200 and the second winding 300. The reduction in coupling capacitance means that the current transmitted between the first winding 200 and the second winding 300 through the capacitor will also be reduced, that is, the leakage current is reduced, and the risk of short circuit and breakdown between the first winding 200 and the second winding 300 is reduced, thereby improving the voltage resistance performance of the electromagnetic winding assembly 10.

[0043] In the present application, by separately arranging the first winding 200 and the second winding 300 in two different areas on the first magnetic ring 100, the coupling capacitance between the first winding 200 and the second winding 300 is reduced, thereby reducing the impact of electromagnetic interference and radio frequency interference, thereby improving the voltage resistance performance of the electromagnetic winding assembly 10.

[0044] In the present application, by separately arranging the first winding 200 and the second winding 300 in two different areas on the first magnetic ring 100, the electric field is distributed more evenly on the magnetic ring, thereby avoiding excessive concentration of the electric field in certain areas and reducing the risk of local discharge, thereby improving the voltage resistance performance of the electromagnetic winding assembly 10.

[0045] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structural or equivalent process transformations made using the contents of the specification and drawings of the present application, such as the mutual combination of technical features between the embodiments, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An electromagnetic winding assembly, characterized in that: It includes a first magnetic ring and a coil, the coil includes a first winding and a second winding, the first winding is wound around a first area on the first magnetic ring, the second winding is wound around a second area on the first magnetic ring, the first area and the second area are arranged along the circumferential direction of the first magnetic ring, and the first winding is spaced apart from the second winding.

2. The electromagnetic winding assembly according to claim 1, characterized in that: The first area and the second area are symmetrically arranged on the first magnetic ring.

3. The electromagnetic winding assembly according to claim 1, characterized in that: The electromagnetic winding assembly also includes a second magnetic ring, the diameter of the second magnetic ring is smaller than the diameter of the first magnetic ring, the second winding includes a first winding part and a second winding part connected to the first winding part, the first winding part is wound on the first magnetic ring, and the second winding part is wound on the second magnetic ring.

4. The electromagnetic winding assembly according to claim 3, characterized in that: The second magnetic ring is arranged on a side of the second region facing away from the first region.

5. The electromagnetic winding assembly according to any one of claims 1 to 4, characterized in that: A minimum distance between the first winding and the second winding is greater than or equal to 0.3 mm.

6. The electromagnetic winding assembly according to claim 1, characterized in that: The electromagnetic winding assembly further includes a baffle, which is connected to the inner wall of the first magnetic ring, and the first winding and the second winding are respectively located on both sides of the baffle.

7. The electromagnetic winding assembly according to claim 1, characterized in that: The first winding and the second winding are both formed by winding at least one conducting wire.

8. The electromagnetic winding assembly according to claim 7, characterized in that: The wire diameter of the first winding is greater than the wire diameter of the second winding.

9. The electromagnetic winding assembly according to claim 7 or 8, characterized in that: The conductive wires forming the first winding and the second winding include a conductor and an insulating layer covering the outside of the conductor, and the thickness of the insulating layer is greater than or equal to 3 μm.

10. An electromagnetic component, characterized in that: The electromagnetic winding assembly comprises the electromagnetic winding assembly as described in any one of claims 1 to 9.

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