CN215007858U

CN215007858U - EQ-like magnetic powder core and novel three-phase inductor

Info

Publication number: CN215007858U
Application number: CN202121527747.4U
Authority: CN
Inventors: 沈嘉炜; 赵万军; 严露; 周水泉
Original assignee: Zhejiang Nbtm Keda Magnetoelectricity Co ltd
Current assignee: Zhejiang Nbtm Keda Magnetoelectricity Co ltd
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2021-12-03
Anticipated expiration: 2031-07-06

Abstract

The utility model discloses a kind EQ type magnetic powder core and novel three phase inductance, including U type magnetic core and a plurality of center pillar, the center pillar set up in U type magnetic core bottom, the central line of center pillar is in on the same straight line, and two kinds EQ type magnetic powder core make-up sets up or a kind EQ type magnetic powder core and the novel three phase inductance of I piece magnetic powder core cooperation setting constitution. Compared with the traditional scheme of winding three inductors, the utility model only needs to be assembled once, thus reducing the processing cost and improving the space utilization rate; compare with the three-phase inductance scheme of square combination, the utility model discloses great reduction the part that needs the bonding, improved the reliability of device.

Description

EQ-like magnetic powder core and novel three-phase inductor

Technical Field

The utility model belongs to the technical field of the magnetic core, a magnetic powder core is related to, especially relate to one kind and improved space utilization, improved the reliability of device, reduced the EQ type magnetic powder core of class and novel three-phase inductance of processing cost.

Background

The inductor is an electrical component commonly used in weak current technology, and the design principle of the inductor mainly depends on the basic electromagnetic theory, especially the magnetic core technology, wherein the magnetic properties of the magnetic core material, the structure of the magnetic core and the like directly influence the design performance of the inductor.

In the traditional EQ type magnetic core, the magnetic core is formed by splicing two same EQ type magnetic cores, and the EQ type magnetic core has the following problems: 1. the EQ-type magnetic core is difficult to form during pressing and low in pressing qualification rate; 2. the EQ-type magnetic core has low forming pressure, the direct current bias capability is poor due to the difference of pressing density, the inductance is low under large current, and the application requirement of large current, high inductance and high power density is difficult to meet; 3. the EQ type magnetic cores are easy to deform during high-temperature annealing, an air gap exists between the two EQ magnetic cores during assembly, the leakage inductance of the inductor is increased, and the inductor performance is poor; 4. the EQ type magnetic core mold is high in cost and low in service life, so that the processing cost of the magnetic core is high.

The traditional three-phase inductor is generally used together with three single-phase inductors, and the method has the following problems: 1. three inductors need to be wound, and the processing cost is high; 2. three inductors can waste a lot of space when assembled. In addition to three single-phase inductors, there are also three-phase inductors combined by blocks (see fig. 2), which has the advantage of improving space utilization, but such combinations need to be glued, and the glue has aging problems, so that such a scheme has poor reliability.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a defect that has solved current EQ magnetic core processing cost height and provide one kind and improved space utilization, improved the reliability of device, reduced the EQ type magnetic powder core of type of processing cost.

The utility model discloses another purpose is in order to solve current three phase inductance and need the three inductance of coiling, and space utilization is low, and the defect that the processing cost is high and production efficiency is low provides a novel three phase inductance.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a kind EQ type magnetic powder core, includes U type magnetic core and a plurality of center pillar, the center pillar set up in U type magnetic core bottom, the central line of center pillar is in on the same straight line.

In this technical scheme, the utility model discloses set up a plurality of center pillars on same U type magnetic core, saved spatial structure, improved space utilization, also reduced the processing cost.

As a preferred embodiment of the present invention, the number of the center pillars is at least 3.

As a preferred scheme of the utility model, the quantity of center pillar is 3.

As a preferred embodiment of the present invention, the center pillar is perpendicular to the bottom of the U-shaped magnetic core.

As an optimized scheme of the utility model, U type magnetic core bottom is equipped with a plurality of recesses that are used for installing the center pillar.

As a preferred embodiment of the present invention, the height of the center pillar is the same as the height of the U-shaped magnetic core.

As an optimized proposal of the utility model, the U-shaped magnetic core is provided with a cambered surface at the inner side of the U-shaped opening.

The utility model also provides a novel three-phase inductance, including two foretell EQ type magnetic powder cores of class, EQ type magnetic powder core buckle of class sets up or an foretell EQ type magnetic powder core of class and an I piece magnetic powder core, EQ type magnetic powder core of class and the cooperation setting of I piece magnetic powder core.

Compared with the prior art, the utility model discloses following beneficial effect has:

1) compared with the traditional scheme of winding three inductors, the utility model only needs to be assembled once, thus reducing the processing cost and improving the space utilization rate;

2) compare with the three-phase inductance scheme of square combination (see fig. 2), the utility model discloses great reduction the part that needs the bonding, improved the reliability of device.

Drawings

Fig. 1 is a schematic structural view of an EQ-like magnetic powder core of the present invention.

FIG. 2 is a schematic diagram of a three-phase inductor in a block combination.

In the figure, 1. U-shaped magnetic powder core; 2. a center pillar; inside the U-shaped opening.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The utility model discloses in words such as first, second, be for the description the utility model discloses a technical scheme is convenient and set up, and does not have specific limiting action, is general finger, right the technical scheme of the utility model does not constitute limiting action. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above-described technique in the present invention can be understood as specific conditions for a person of ordinary skill in the art. The technical solutions in the same embodiment and between the technical solutions in different embodiments can be arranged and combined to form a new technical solution without contradiction or conflict, which is all within the scope of the present invention.

Example 1

Referring to fig. 1, the present embodiment provides an EQ-like magnetic powder core, which includes a U-shaped magnetic core 1 and three center pillars 2, wherein the center pillars 2 are vertically disposed at the bottom of the U-shaped magnetic core 1, the center lines of the three center pillars 2 are located on the same straight line, and the inner side 3 of the U-shaped magnetic core 1 is an arc surface.

Example 2

This embodiment provides a novel three-phase inductor, and two EQ-like magnetic powder cores described in embodiment 1 are buckled.

Example 3

This embodiment provides another novel three-phase inductor, and the EQ-like magnetic powder core described in embodiment 1 is used in combination with an existing I-piece magnetic powder core.

Utility model has improved space utilization, also reduced the part that needs the bonding, improved the reliability of device, only need the equipment once, reduced the processing cost.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a kind EQ type magnetic powder core, its characterized in that, includes U type magnetic core and a plurality of center pillar, the center pillar set up in U type magnetic core bottom, the central line of center pillar is in on the same straight line.

2. The EQ-like magnetic powder core of claim 1, wherein the number of the center pillars is at least 3.

3. The EQ-like magnetic powder core of claim 1 or 2, wherein the number of the center pillars is 3.

4. The EQ-like magnetic powder core of claim 1 or 2, wherein the central pillar is perpendicular to the bottom of the U-shaped magnetic core.

5. The EQ-like magnetic powder core of claim 1 or 2, wherein the U-shaped magnetic core has a plurality of grooves for mounting the center pillars at the bottom.

6. The EQ-like magnetic powder core of claim 1 or 2, wherein the height of the center pillar is the same as the height of the U-shaped magnetic core.

7. The EQ-like magnetic powder core of claim 1 or 2, wherein the U-shaped magnetic core has an arc surface inside the U-shaped opening.

8. A novel three-phase inductor, which comprises two EQ-like magnetic powder cores according to any one of claims 1 to 7, wherein the EQ-like magnetic powder cores are arranged in a buckling manner or comprise an EQ-like magnetic powder core according to any one of claims 1 to 7 and an I-piece magnetic powder core, and the EQ-like magnetic powder core and the I-piece magnetic powder core are arranged in a matching manner.