CN217468145U

CN217468145U - Inductance magnetic core and have inductance of this magnetic core

Info

Publication number: CN217468145U
Application number: CN202220122362.8U
Authority: CN
Inventors: 高宽志
Original assignee: Qingdao Anjie Energy Technology Co ltd
Current assignee: Qingdao Yunlu Energy Technology Co Ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-09-20
Anticipated expiration: 2032-01-18

Abstract

The utility model provides an inductance magnetic core and have inductance of this magnetic core. The inductance magnetic core comprises a magnetic core body, wherein more than two through holes are arranged on the magnetic core body at intervals, and each through hole axially extends and penetrates through the upper end face and the lower end face of the magnetic core body. The inductance magnetic core of the utility model is provided with more than two through holes, and the lead passes through the corresponding through holes to be wound, so that the inductance with different functions can be formed in the circuit, and the problem of high-frequency EMC is solved on the basis of reducing the production cost; and the inductance magnetic core and the formed inductance have multiple specifications and wide application range.

Description

Inductance magnetic core and have inductance of this magnetic core

Technical Field

The utility model belongs to the technical field of the inductance, especially, relate to an inductance magnetic core and have inductance of this magnetic core.

Background

With the continuous improvement of the current industrial situation and production technology, the working frequency of electric products is continuously improved, the high frequency trend of the electric products is realized, and filter magnetic cores and inductors are widely applied. The traditional filter magnetic core and the inductor have the following problems:

in order to solve the problem of EMC interference, the prior art adopts differential mode inductance and common mode inductance to solve the problem of EMC, only one hole is arranged in the middle of an annular magnetic core used by the differential mode inductance and the common mode inductance, insulation materials are additionally used for insulation among windings of the multi-winding inductance, corresponding material cost and labor cost are required to be increased, and the product cost is high;

in order to solve the problem of EMC radiation, the power line is penetrated into the magnetic core and wound for a plurality of turns to play a role in inhibiting radiation interference, and the cost of labor materials is high; the size of a general magnetic core is larger and the cost is high due to the limitation of the wire gauge size of a power wire;

therefore, there is a need to design an inductor core and an inductor having the same to reduce the cost of the product and solve the EMC problem.

SUMMERY OF THE UTILITY MODEL

The utility model provides an above-mentioned technical problem, provide an inductance magnetic core and have inductance of this magnetic core, this inductance magnetic core simple structure, convenient to use, it has the through-hole more than two, can form the inductance that plays different effects in the circuit around establishing the wire according to actual demand, solves high frequency EMC problem on reduce cost's basis.

In order to achieve the above object, the utility model discloses a technical scheme be:

the utility model provides an inductance magnetic core, it includes cylindric magnetic core body, the interval is provided with more than two through-holes on the magnetic core body, every through-hole axial extension and run through two upper and lower terminal surfaces of magnetic core body.

The inductance magnetic core provided by the technical scheme has a simple structure and is convenient to use, more than two through holes are formed, and wires can be wound according to actual requirements, so that inductors with different functions are formed in a circuit, such as differential mode inductors for filtering differential mode signals, common mode inductors for filtering common mode signals, combinations of differential mode inductors and common mode inductors and the like are used as filter inductors to solve the problem of high-frequency EMC; and the number and the position distribution of the through holes can be designed according to actual needs, the specification selectivity is more, and the application range is wide.

In other embodiments of the present application, the magnetic core body is cylindrical, the cylindrical magnetic core has a small volume, and the utilization rate of the magnetic core is high; the lead wire penetrates through the through hole to form a circular magnetic circuit, and stray magnetic flux and EMI diffusion are low.

In other embodiments of this application, more than two the through-hole is along circumferencial direction evenly distributed, and the wire penetrates behind the through-hole, can produce the magnetic field of high concentration in the circumferencial direction stack, improves the energy storage of inductance.

In other embodiments of the present application, the magnetic core body is made of nickel-zinc ferrite, and the magnetic core body made of the material does not need to use an additional insulating material for inter-winding insulation of the formed multi-winding inductor, so that material cost and process operation are reduced, and cost is reduced.

In some other embodiments of the present application, the through hole is a circular hole.

The utility model also provides an inductance, it includes any one of the above-mentioned technical scheme inductance magnetic core, still include the wire, the wire passes correspondingly the through-hole is around locating on the magnetic core body, just stretch out to from a terminal surface at the both ends of wire the outside of magnetic core body.

According to the inductor provided by the technical scheme, the lead penetrates through the through hole in the magnetic core body to form a differential mode inductor, a common mode inductor, a combination of the differential mode inductor and the common mode inductor and the like which are used as a filter inductor to solve the high-frequency EMC problem.

In some other embodiments of the present application, the wire is a copper wire or an enameled wire.

In some other embodiments of the present application, the inductor is a common mode inductor or a differential mode inductor or a combination of the two.

In other embodiments of the present application, the inductor is inserted into a PCB board, a board hole is formed in the PCB board, and a position of the through hole corresponds to a position of the board hole; according to the technical scheme, the inductor is inserted into the PCB, so that the cost of the whole client at which the PCB is positioned can be reduced.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of an inductor core according to embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of an inductor according to embodiment 1 of the present invention;

fig. 3 is a schematic structural diagram of an inductor according to embodiment 2 of the present invention;

fig. 4 is a schematic structural diagram of an inductor according to embodiment 3 of the present invention;

fig. 5 is a schematic structural diagram of an inductor according to embodiment 4 of the present invention;

in the above figures: an inductor 100; an inductor core 10; a magnetic core body 1; an end face 11; a through hole 2; a wire 3; and a winding 31.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on 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.

The terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features.

For better understanding of the above technical solutions, the following detailed descriptions are provided with reference to the accompanying drawings and specific embodiments.

Example 1

Referring to fig. 1, in an exemplary embodiment of an inductance core 10 of the present invention, the inductance core 10 includes a cylindrical core body 1, two or more through holes 2 are disposed on the core body 1 at intervals, and each through hole 2 axially extends and penetrates through upper and lower end surfaces 11 of the core body 1. The through hole 2 is a circular hole, and the magnetic core body 1 is made of nickel-zinc ferrite.

The inductance core 10 provided by the embodiment has a simple structure and is convenient to use, and has more than two through holes 2, so that the inductors 100 with different functions can be formed in a circuit by winding the lead 3 according to actual requirements, for example, differential mode inductors filter differential mode signals, common mode inductors filter common mode signals, and the combination of the differential mode inductors and the common mode inductors is used as a filter inductor to solve the problem of high-frequency EMC; meanwhile, the magnetic core body 1 made of the nickel-zinc ferrite does not need to use extra insulating materials for inter-winding insulation of the formed multi-winding inductor, so that the material cost and the process operation are reduced, and the cost is reduced. Meanwhile, the cylindrical magnetic core has small volume and high utilization rate; the wire penetrates the through hole to form a circular magnetic circuit, and stray magnetic flux and EMI diffusion are low.

In the above embodiment, the number and the position distribution of the through holes 2 can be designed according to actual requirements, and the formed inductor core 10 has multiple specifications and wide application range. Preferably, the number of the through holes 2 is six in the embodiment, and the six through holes 2 are uniformly distributed along the circumferential direction, and after the lead 3 penetrates into the through holes 2 uniformly distributed along the circumferential direction, a highly concentrated magnetic field can be generated by superposition in the circumferential direction, so that the energy storage of the inductor is improved.

Further, referring to fig. 2 to 5, the present invention further provides an inductor 100, which includes the inductor core 10 provided by the above embodiment, and further includes a wire 3, wherein the wire 3 passes through the corresponding through hole 2 and winds around the core body 1, and the two ends of the wire 3 extend out of the core body 1 from an end surface 11. In this embodiment, the conducting wire 3 is a copper wire or an enameled wire, and it should be noted that the size of the through hole 2 can be set in different specifications according to the size of the wire rod such as the copper wire or the enameled wire passing through the through hole.

The inductor 100 provided by the present embodiment, which forms a differential mode inductor or a common mode inductor or a combination of the differential mode inductor and the common mode inductor by penetrating a conducting wire 3 into a through hole 2 in a magnetic core body 1, etc. to be used as a filter inductor to solve the high frequency EMC problem; the inductor 100 is inserted into a PCB (not shown) having a hole, and the through hole 2 is disposed at a position corresponding to the hole. According to the technical scheme, the inductor is inserted into the PCB, so that the overall cost of the client side where the PCB is located can be reduced. In this embodiment, the position of the through hole 2 can be designed according to the position of the inserted PCB hole, and the position design of different specifications is made, so that the application range is wide.

Specifically, referring to fig. 2 to 5, taking the number of the through holes 2 as six as an example, the inductor 100 formed will be specifically described:

referring to fig. 2 and 3, specific structures of inductors in

embodiments

1 and 2 of the present invention are shown. Wherein, three sections of wires 3 respectively pass through the corresponding through holes 2 to form a three-phase common mode inductor, and two ends of the wires 3 penetrate out from the lower end surface of the magnetic core body 1.

Referring to fig. 4, a specific structure of an inductor in embodiment 3 of the present invention is shown. In this embodiment, the wire 3 is wound to form the windings 31, and the three windings 31 are wound on the magnetic core body 1 and pass through the corresponding three through holes 2. In this embodiment, preferably, three windings 31 and the magnetic core 1 may form a three-phase common mode inductor, and two ends of the windings 31 penetrate through the lower end surface of the magnetic core 1. In other embodiments, one of the windings 31 and the magnetic core 1 may independently form a differential mode inductor, and the other two windings 31 and the magnetic core 1 may form a two-phase common mode inductor.

Referring to fig. 5, a specific structure of an inductor in embodiment 4 of the present invention is shown. In this embodiment, six windings 31 are wound on the magnetic core 1 and pass through the corresponding six through holes 2 to form six differential mode inductors. In other embodiments, six windings 31 wound on the magnetic core 1 and passing through corresponding six through holes 2 may also form two three-phase common mode inductors or three two-phase common mode inductors or a combination of differential mode inductors and common mode inductors.

The inductor provided by the utility model can design the inductors with different functions in the circuit according to the number of the through holes 2 on the magnetic core body 1 and the actual demand, thereby solving the problem of high-frequency EMC; the inductor can be plugged into a PCB (printed circuit board) of the client, so that the overall cost of the client can be reduced; meanwhile, the specification of the inductance magnetic core 10 is selectable, the application range is wide, and the cost is reduced to a certain extent.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. The inductance magnetic core is characterized by comprising a magnetic core body, wherein more than two through holes are arranged on the magnetic core body at intervals, and each through hole axially extends and penetrates through the upper end face and the lower end face of the magnetic core body.

2. The inductor core according to claim 1, wherein the core body is cylindrical.

3. An inductor core according to claim 2, wherein two or more of said through holes are uniformly distributed in the circumferential direction.

4. The inductor core according to claim 1, wherein the magnetic core body is a nickel-zinc-ferrite material.

5. The inductor core according to claim 1, wherein the through holes are circular holes.

6. An inductor, comprising the inductor core according to any one of claims 1 to 5, further comprising a conducting wire, wherein the conducting wire is wound on the core body through the corresponding through hole, and two ends of the conducting wire extend out of the core body from one end surface.

7. The inductor according to claim 6, wherein the conducting wire is a copper wire or an enameled wire.

8. An inductor according to claim 6 or 7, characterized in that the inductor is a common mode inductor or a differential mode inductor or a combination of both.

9. The inductor according to claim 6, wherein the inductor is inserted into a PCB board, a hole is formed in the PCB board, and the through hole is located at a position corresponding to the hole.