CN220509836U

CN220509836U - Magnetic core assembly and inductor

Info

Publication number: CN220509836U
Application number: CN202322133854.4U
Authority: CN
Inventors: 罗浩彰; 刘云峰; 马继发
Original assignee: Heyuan Jingquanhua Technology Co ltd
Current assignee: Heyuan Jingquanhua Technology Co ltd
Priority date: 2023-08-08
Filing date: 2023-08-08
Publication date: 2024-02-20
Anticipated expiration: 2033-08-08

Abstract

The utility model discloses a magnetic core assembly and an inductor, wherein the magnetic core assembly comprises two magnetic core groups which are mutually butted; any one of the magnetic core groups comprises a first U-shaped magnetic core, a second U-shaped magnetic core and a third U-shaped magnetic core, the magnetic core sections of the first U-shaped magnetic core, the second U-shaped magnetic core and the third U-shaped magnetic core are identical, and the first U-shaped magnetic core and the second U-shaped magnetic core are installed in the third U-shaped magnetic core to form an E-shaped structure. The utility model solves the problem that the existing U-shaped magnetic core cannot be suitable for three-phase common-mode inductance.

Description

Magnetic core assembly and inductor

Technical Field

The utility model relates to the technical field of inductors, in particular to a magnetic core assembly and an inductor.

Background

The current of the traditional common mode inductor is generally between a few amperes and tens of amperes, and the common mode inductor is suitable for civil voltage, but cannot meet the environments of large current and large voltage, so that the common mode inductor is used in normal voltage and small current environments. The current of the three-phase common mode inductor is large in general, and can reach hundreds of amperes, so that the three-phase common mode inductor is suitable for large current and large voltage.

Conventional inductors generally adopt silicon steel magnetic cores, but the silicon steel materials are brittle and easy to crack, so that the silicon steel magnetic cores with relatively characteristic shapes cannot be molded. Compared with the conventional silicon steel magnetic core in the market, the U-shaped magnetic core is formed by winding and stacking, but the U-shaped magnetic core can only meet the design and development of common-mode inductance and cannot be suitable for three-phase common-mode.

Disclosure of Invention

The utility model mainly aims to provide a magnetic core assembly and an inductor, and aims to solve the problem that the existing U-shaped magnetic core cannot be suitable for three-phase common mode inductance.

To achieve the above object, the present utility model proposes a magnetic core assembly including two magnetic core groups butted to each other;

any one of the magnetic core groups comprises a first U-shaped magnetic core, a second U-shaped magnetic core and a third U-shaped magnetic core, the magnetic core sections of the first U-shaped magnetic core, the second U-shaped magnetic core and the third U-shaped magnetic core are identical, and the first U-shaped magnetic core and the second U-shaped magnetic core are installed in the third U-shaped magnetic core to form an E-shaped structure.

Optionally, the first U-shaped magnetic core, the second U-shaped magnetic core and the third U-shaped magnetic core are all configured as U-shaped structures made of silicon steel materials.

Optionally, a fixing strap for fixing the two magnetic core groups is further included.

Optionally, the fixing strap is set to be a fixing steel band, and the fixing steel band end is equipped with the connection buckle that is used for adjusting elasticity.

In order to achieve the above object, the present utility model further provides an inductor, which includes any one of the magnetic core assemblies, and further includes a plurality of windings wound on the magnetic core assembly.

Optionally, the magnetic core assembly includes first magnetic column, second magnetic column and third magnetic column that is used for winding the winding, cover is equipped with insulating paper on first magnetic column, second magnetic column and the third magnetic column.

Optionally, the winding is provided in a flat wire vertical winding configuration.

Optionally, the wire inlet end and the wire outlet end of the winding are respectively sleeved with an insulating sleeve.

Optionally, the motor further comprises a first separator and a second separator, wherein the first separator and the second separator are respectively arranged on two sides of the winding and are used for separating the winding and the magnetic core assembly.

Optionally, the winding device further comprises a mounting bottom plate, and the mounting bottom plate is provided with a wire passing hole for passing through the wire inlet end and the wire outlet end of the winding.

The utility model has the beneficial effects that: the structure of the existing magnetic core assembly is improved, the magnetic core assembly of the magnetic core assembly is set to be an E-shaped structure formed by splicing a large U-shaped magnetic core and two small U-shaped magnetic cores, the two magnetic core assemblies are in butt joint, the magnetic core assembly of a three-phase inductor can be obtained, the traditional U-shaped magnetic core is applicable to the three-phase common-mode inductor, the structure is simple, the assembly is convenient, and the production cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a magnetic core assembly according to the present utility model;

FIG. 2 is a schematic illustration of a single magnetic core assembly structure of the present utility model;

FIG. 3 is a schematic diagram of the overall structure of the inductor of the present utility model;

FIG. 4 is an exploded view of the overall structure of the inductor of the present utility model;

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

An embodiment of the present utility model proposes a magnetic core assembly 1, referring to fig. 1 and 2, the magnetic core assembly 1 includes two magnetic core assemblies 1 that are butted with each other;

any one of the magnetic core groups 1 comprises a first U-shaped magnetic core 11, a second U-shaped magnetic core 12 and a third U-shaped magnetic core 13, wherein the magnetic core sections of the first U-shaped magnetic core 11, the second U-shaped magnetic core 12 and the third U-shaped magnetic core 13 are the same, and the first U-shaped magnetic core 11 and the second U-shaped magnetic core 12 are installed in the third U-shaped magnetic core to form an E-shaped structure.

Specifically, in one magnetic core group 1, the third U-shaped magnetic core 13 is set as a magnetic core with a larger size, the first U-shaped magnetic core 11 and the second U-shaped magnetic core 12 are set as two magnetic cores with the same size, and the first U-shaped magnetic core and the second U-shaped magnetic core 12 are smaller than the third U-shaped magnetic core 13, so, referring to fig. 2, the first U-shaped magnetic core 11 and the second U-shaped magnetic core 12 are spliced side by side, then the spliced first U-shaped magnetic core 11 and the second U-shaped magnetic core 12 are jointly installed in an opening of the third U-shaped magnetic core, so that one magnetic core group 1 can be spliced, the magnetic core group 1 is in an E-shaped structure, and comprises a first magnetic column 16, a second magnetic column 17 and a third magnetic column 18, the openings of the two E-shaped magnetic core groups 1 are spliced into one finished magnetic core group 1, and after winding 2 is wrapped on the three magnetic columns, a three-phase common-mode inductor can be formed. It should be noted that, in this embodiment, the first U-shaped magnetic core 11, the second U-shaped magnetic core 12 and the third U-shaped magnetic core 13 may be fixed by a method including, but not limited to, glue. Under the magnetic core splicing structure, the magnetic circuits among the three magnetic columns can be shared, so that the size of the magnetic core structure is reduced by reducing the size of the magnetic core. Meanwhile, the loss of the magnetic core is reduced, and the working efficiency of the whole product is improved.

Further, in this embodiment, the core sections of the first U-shaped magnetic core 11, the second U-shaped magnetic core 12 and the third U-shaped magnetic core 13 are the same, the assembled magnetic core group 1 is spliced, the three magnetic columns have the same cross-sectional area, the uniformity of the assembly process is confirmed, the structure of the whole magnetic core group 1 is simple, the assembly is convenient, the manufacturing time is reduced, the whole volume is reduced, the material cost and the manufacturing cost are reduced, the space utilization rate is increased, the product efficiency is improved, and the product loss is reduced.

In this embodiment, the structure of the existing magnetic core group 1 is improved, wherein the magnetic core group 1 is formed by three U-shaped magnetic core groups 1 into an E-shaped magnetic core group 1, and the openings of the two E-shaped magnetic core groups 1 are mutually butted, so that the two E-shaped magnetic core groups 1 can be spliced into a three-phase magnetic core group 1, and the problem that the existing U-shaped magnetic core cannot be applied to a three-phase inductor is solved.

Further, the first U-shaped magnetic core 11, the second U-shaped magnetic core 12 and the third U-shaped magnetic core 13 are all set to be U-shaped structures made of silicon steel materials, in this embodiment, the magnetic cores are made of existing silicon steel materials, so that the general performance of 1 magnetic core assembly is met, the stability of the structure is guaranteed, and the cost is low.

Further, the magnetic core assembly further comprises a fixing strap 14 for fixing the two magnetic core assemblies 1, and the two magnetic core assemblies 1 can be tightly spliced together through the strap, so that the stability of the structure is ensured. Further, in this embodiment, the fixing band 14 is a fixed steel band, the steel band is thinner, so that the space occupation rate can be reduced, and meanwhile, the steel band is not easy to deform, so that the stability of the structure can be further improved; the end part of the fixed steel belt is provided with a connecting buckle 15 for adjusting tightness, so that the fixation of the magnetic core assembly 1 with different sizes is met.

Another embodiment of the present utility model further provides an inductor, referring to fig. 3 and fig. 4, including a magnetic core assembly 1 as described above, and further including a plurality of windings 2 wound on the magnetic core assembly 1.

In this embodiment, the inductor adopts the U-shaped magnetic core of traditional silicon steel material, has improved the structure of magnetic core, and wherein, magnetic core group 1 comprises three U-shaped magnetic core group 1 and becomes E-shaped magnetic core group 1, and the opening of two E-shaped magnetic core group 1 is butt joint each other, can splice into a three-phase magnetic core group 1, has solved the problem that current U-shaped magnetic core can't be suitable for in three-phase inductor. The inductance of this embodiment constitutes three-phase common mode inductor by the magnetic core group 1 piece after improving, and it should be noted that three-phase common mode inductor medium characteristic and frequency response are good, and three-phase common mode inductor has very good medium characteristic under low frequency and intermediate frequency, can effectively reduce the coupling of circuit, improves the response ability of circuit, and simultaneously, three-phase common mode inductance has less current consumption and calorific capacity, uses less energy in the circuit, saves the electric energy.

Further, referring to fig. 2, the magnetic core assembly 1 includes a first magnetic pole 16, a second magnetic pole 17, and a third magnetic pole 18 for winding the winding 2, and insulating paper 3 is sleeved on the first magnetic pole 16, the second magnetic pole 17, and the third magnetic pole 18. Through increasing insulating paper 3 between magnetic pillar and winding 2, can carry out effectual insulation with magnetic pillar and winding 2 and separate, guarantee the security that the inductor used.

Further, the winding 2 is arranged to be of a flat wire vertical winding structure, the magnetic core space is fully utilized, the winding area is increased, the product efficiency is improved, meanwhile, the winding 2 is of a naked design, the sufficient heat dissipation area is provided, the heat dissipation efficiency of the inductor is improved, the product temperature rise is reduced, and the use safety and the service life of the product are ensured.

Further, the wire inlet end and the wire outlet end of the winding 2 are respectively sleeved with an insulating sleeve 4, and it should be noted that when the inductor is used, the wire inlet end and the wire outlet end of the winding 2 need to be subjected to paint removal treatment, and the insulation is arranged to prevent electric leakage, so that the use safety is further improved, and in the embodiment, the insulating sleeve 4 can be a glass fiber sleeve.

Further, the inductor further comprises a first partition plate 51 and a second partition plate 52, the first partition plate 51 and the second partition plate 52 are respectively arranged on two sides of the winding 2 and used for separating the winding 2 from the magnetic core assembly 1, the first partition plate 51 and the second partition plate 52 can effectively separate the winding 2 from the inner side of the magnetic core, the voltage withstand standard of the inductor is improved, and the stability of the overall structure and the service life of products are guaranteed.

Further, the winding device further comprises a mounting bottom plate 6, the mounting bottom plate 6 is provided with a wire passing hole used for the wire inlet end and the wire outlet end of the winding 2 to pass through, the mounting bottom plate 6 is an integral structure supporting plate of a product, each component of the product is mounted on the mounting bottom plate 6, the wire passing hole is reserved on the mounting bottom plate 6, and when the winding device is used, the mounting bottom plate 6 is only required to be fixed, the wire passing hole passes through the wire inlet end and the wire outlet end, so that the winding device is convenient to operate and convenient to install.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A magnetic core assembly, characterized in that the magnetic core assembly comprises two magnetic core groups which are mutually butted;

2. The magnetic core assembly of claim 1, wherein the first, second and third U-shaped magnetic cores are each configured as a U-shaped structure of silicon steel.

3. The magnetic core assembly of claim 1, further comprising a securing strap for securing the two magnetic core sets.

4. A magnetic core assembly according to claim 3, wherein the securing straps are provided as securing straps with connecting buckles at the ends of the securing straps for adjusting tightness.

5. An inductor comprising the magnetic core assembly of any one of claims 1-4, and further comprising a plurality of windings wound around the magnetic core assembly.

6. The inductor of claim 5, wherein the magnetic core assembly comprises a first magnetic post, a second magnetic post, and a third magnetic post for winding the winding, and wherein the first magnetic post, the second magnetic post, and the third magnetic post are sleeved with insulating paper.

7. The inductor of claim 5, wherein the winding is provided in a flat wire-wound configuration.

8. The inductor of claim 5, wherein the winding is provided with respective insulated bushings at the inlet and outlet ends.

9. The inductor of claim 5 further comprising first and second spacers mounted on opposite sides of said winding for separating said winding from said core assembly.

10. An inductor according to any one of claims 5 to 9, further comprising a mounting plate, the mounting plate being provided with wire vias for passing through the wire inlet and outlet ends of the winding.