Three-phase common-mode inductor

Abstract

The utility model relates to the technical field of inductance elements, in particular to a three-phase common mode inductor. The magnetic core is annularly arranged, a partition plate is arranged in a center hole in the middle of the magnetic core and extends outwards from the center of the magnetic core, the other end of the partition plate abuts against the inner wall of the magnetic core, the partition plate divides the magnetic core into a plurality of stations, the coils are located on the stations, and a magnetic column assembly is arranged below the magnetic core. The device solves the problem that a common mode inductor is large in size, the magnetic leakage shunt of the common mode inductor is strengthened, the coupling degree between the coils is reduced, and the magnetic leakage component in the common mode inductor is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of inductance components, in particular to a three-phase common-mode inductance. Background Art

[0002] Inductors are basic components in electronic devices, and the technical requirements for inductor components such as good heat dissipation, small size, high integration and timely response are also popular demands of electronic product consumers.

[0003] Common-mode inductors are often used in computer switching power supplies to filter common-mode electromagnetic interference signals. As an upgraded version of common-mode inductors, three-phase common-mode inductors have a similar core function, namely, suppressing common-mode noise and ensuring stable circuit operation. However, existing common-mode inductors are large in size, and during the design and manufacturing process, the magnetic flux fails to be fully concentrated in the center of the inductor due to various reasons, resulting in leakage magnetic flux. Utility Model Content

[0004] In order to solve the problems in the related art, the utility model provides a three-phase common-mode inductor, which solves the problem of large volume of the common-mode inductor and strengthens the leakage magnetic shunt of the common-mode inductor.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] The utility model provides a three-phase common-mode inductor including a magnetic core and a coil wound on the magnetic core. The magnetic core is arranged in a ring shape. A partition is provided in a central hole in the middle of the magnetic core. The partition extends outward from the center of the magnetic core. The other end of the partition is against the inner wall of the magnetic core. The partition isolates the magnetic core into multiple workstations, and the coil is located at each workstation. A magnetic column assembly is provided below the magnetic core.

[0007] In the above scheme, by setting the magnetic column assembly, by setting the magnetic column assembly below the magnetic core, the magnetic core forms a composite magnetic circuit, which on the one hand reduces the volume of the common-mode inductor, and on the other hand strengthens the leakage magnetic branch of the common-mode inductor, while also reducing the coupling between the coils and increasing the leakage magnetic component in the common-mode inductor. At the same time, the installation steps can be reduced during installation, making the installation more convenient.

[0008] The magnetic column assembly includes three column magnetic cores, each of which is located between two coils, and the upper end of the column magnetic core is against the lower end of the magnetic core.

[0009] A base is provided at the bottom of the magnetic core, and three protrusions are provided on the base. The three protrusions are evenly arranged along the circumference of the base. Each of the protrusions is provided with a work station hole, which is adapted to the wire ends of the coil. The wire ends pass through the corresponding work station holes respectively and are fixedly connected to the work station holes.

[0010] In the above solution, the station hole is provided to pass the wire end of the coil, thereby fixing the coil and ensuring that the coil can fit tightly on the magnetic core, thereby improving the performance and efficiency of the equipment.

[0011] Support legs are provided on the lower end surface of the base.

[0012] In the above solution, the support legs are provided to support the common-mode inductor.

[0013] The partition is projected into a Y-shape on the base, and the three extended edges of the Y-shape of the partition are evenly distributed along the circumference of the central axis.

[0014] In the above solution, the partition is provided to separate the magnetic field, optimize the performance of the inductor, and improve its stability and reliability.

[0015] The coils are provided in three groups.

[0016] The above solution has the following advantages:

[0017] 1. Since the three-phase common-mode inductor of the present invention includes a magnetic core and a coil wound on the magnetic core, the magnetic core is arranged in a ring shape, a partition is provided in the central hole in the middle of the magnetic core, the partition extends outward from the center of the magnetic core, and the other end of the partition is against the inner wall of the magnetic core. The partition isolates the magnetic core into multiple stations, and the coil is located at each station. A magnetic column assembly is provided under the magnetic core. Through the setting of the magnetic column assembly, by setting the magnetic column assembly under the magnetic core, the magnetic core forms a composite magnetic circuit, reducing the volume of the common-mode inductor, strengthening the leakage magnetic branch of the common-mode inductor, reducing the coupling between the coils, and increasing the leakage magnetic component in the common-mode inductor. The installation steps are reduced during installation, making the installation more convenient.

[0018] 2. A base is provided at the bottom of the magnetic core, and three protrusions are provided on the base. Each protrusion is provided with a work station hole. The work station hole is adapted to the wire end of the coil and is used to pass the wire end of the coil to fix the coil and ensure that the coil can fit tightly on the magnetic core to improve the performance and efficiency of the equipment. A support leg is provided on the lower end face of the base to support the common-mode inductor. The partition is projected in a Y-shape on the base, and the three extended edges of the Y-shape are evenly distributed circumferentially along the central axis. The partition is used to separate the magnetic field, optimize the performance of the inductor, and improve its stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of a three-phase common-mode inductor;

[0020] Figure 2 This is an exploded diagram of a three-phase common-mode inductor;

[0021] Explanation of the accompanying drawings: 1. magnetic core; 2. coil; 3. partition; 4. column magnetic core; 5. base; 6. protrusion. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figures 1-2 As shown, a three-phase common-mode inductor of the present invention includes a magnetic core 1 and a coil 2 wound on the magnetic core 1. The magnetic core 1 is arranged in a ring shape, and a partition 3 is provided in the central hole in the middle of the magnetic core 1. The partition 3 extends outward from the center of the magnetic core 1, and the other end of the partition 3 is against the inner wall of the magnetic core 1. The partition 3 isolates the magnetic core 1 into three stations. The coil 2 is provided in three groups, and the three groups of coils 2 are located at each station. A magnetic column assembly is provided under the magnetic core 1. By arranging the magnetic column assembly under the magnetic core 1, the magnetic core 1 forms a composite magnetic circuit, which on the one hand reduces the volume of the common-mode inductor, and on the other hand strengthens the leakage magnetic branch of the common-mode inductor, while also reducing the coupling between the coils 2 and increasing the leakage magnetic component in the common-mode inductor, which can simplify the installation steps and make the installation more convenient.

[0024] The magnetic column assembly includes three column cores 4 . Each column core 4 is located between two coils 2 , and the upper end of the column core 4 abuts against the lower end of the magnetic core 1 .

[0025] A base 5 is provided at the bottom of the magnetic core 1, and three protrusions 6 are provided on the base 5. The three protrusions 6 are evenly arranged along the circumference of the base 5. Each protrusion 6 is provided with a work station hole, which is adapted to the wire ends of the coil 2. The wire ends pass through the corresponding work station holes respectively and are fixedly connected to the work station holes. They are used to pass through the wire ends of the coil 2, thereby fixing the coil 2 and ensuring that the coil 2 can fit tightly on the magnetic core 1, thereby improving the performance and efficiency of the equipment. A support leg is provided on the lower end surface of the base 5 for supporting the common mode inductor.

[0026] The projection shape of the partition 3 on the base 5 is Y-shaped, and the three extended edges of the Y-shaped partition 3 are evenly distributed circumferentially along the central axis. The angle between two adjacent extended edges of the partition 3 is 120°. The partition 3 is used to separate the magnetic field, optimize the performance of the inductor, and improve its stability and reliability.

[0027] The working principle of the three-phase common-mode inductor is based on the law of electromagnetic induction. The induced electromotive force is generated by the magnetic field in the coil 2, thereby blocking the common-mode signal, reducing electromagnetic interference, and improving the reliability and stability of the system. The three-phase common-mode inductor can convert electrical energy into magnetic energy and convert the magnetic energy back into electrical energy when needed. It plays an important role in the circuit and can effectively suppress electromagnetic interference and improve the stability of the circuit. Through the arrangement of the magnetic core 1 and the magnetic column assembly, the magnetic core 1 forms a composite magnetic circuit, which is convenient for reducing the volume of the common-mode inductor and can strengthen the leakage magnetic branch of the common-mode inductor. At the same time, it also reduces the coupling between the coils 2 and increases the leakage magnetic component in the common-mode inductor.

[0028] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A three-phase common-mode inductor, characterized in that: The invention comprises a magnetic core (1) and a coil (2) wound on the magnetic core (1), wherein the magnetic core (1) is arranged in a ring shape, a partition (3) is provided in a central hole in the middle of the magnetic core (1), the partition (3) extends outward from the center of the magnetic core (1), the other end of the partition (3) abuts against the inner wall of the magnetic core (1), and the partition (3) separates the magnetic core (1) into a plurality of workstations, and the coil (2) is located at each workstation; a magnetic column assembly is provided below the magnetic core (1).

2. A three-phase common-mode inductor according to claim 1, characterized in that: The magnetic column assembly contains three column magnetic cores (4), each column magnetic core (4) is located between two coils (2), and the upper end of the column magnetic core (4) is against the lower end of the magnetic core (1).

3. The three-phase common-mode inductor according to claim 1, characterized in that: A base (5) is provided at the bottom of the magnetic core (1), and three protrusions (6) are provided on the base (5). The three protrusions (6) are evenly arranged along the circumference of the base (5), and each of the protrusions (6) is provided with a work station hole, and the work station holes are adapted to the wire ends of the coil (2). The wire ends respectively pass through the corresponding work station holes and are fixedly connected to the work station holes.

4. A three-phase common-mode inductor according to claim 3, characterized in that: Support legs are provided on the lower end surface of the base (5).

5. The three-phase common-mode inductor according to claim 3, characterized in that: The partition (3) is projected onto the base (5) in a Y-shaped shape, and the three extended edges of the Y-shaped partition (3) are evenly distributed along the circumference of the central axis.

6. The three-phase common-mode inductor according to claim 1, characterized in that: The coils (2) are provided in three groups.

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