CN217280386U

CN217280386U - Multiphase inductance structure

Info

Publication number: CN217280386U
Application number: CN202123030044.3U
Authority: CN
Inventors: 朱南海; 郭修竹
Original assignee: Meishang Pan Technology Co ltd
Current assignee: Meishang Pan Technology Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-08-23
Anticipated expiration: 2031-12-03

Abstract

The utility model discloses a polyphasic inductance structure, it includes a main iron core body, a plurality of inferior iron core body, a plurality of main coil and a plurality of secondary coil. The main iron core body is provided with a plurality of grooves. The secondary iron core bodies, the primary coils and the secondary coils are arranged in the grooves. Each main coil is respectively positioned between the main iron core body and the corresponding secondary coil. Each main coil has a first end and a second end extending in opposite directions. Each secondary coil is respectively positioned between the main coil and the corresponding secondary iron core body. Each secondary coil has a third end portion and a fourth end portion extending in opposite directions. The main iron core body is coupled with the corresponding secondary iron core body, the main coil and the secondary coil in each groove to form an inductor, and the plurality of inductors are not mutually coupled.

Description

Multiphase inductance structure

Technical Field

The utility model relates to a polyphasic inductance structure especially relates to a practice thrift whole space and improve power density's polyphasic non-coupling inductance structure

Background

In the prior art, the multi-phase non-coupled inductor is mainly composed of a plurality of discrete single inductors, and a few of the multi-phase non-coupled inductors are applied to a structure with a plurality of integrated inductors. When a plurality of single inductors are combined into a multiphase inductor, the single inductors are usually bonded into a whole in a mechanical manner, however, the multiphase inductor formed in this manner has a larger overall volume, and thus when the inductor is coupled to a circuit board, the inductor occupies a space on the circuit board, that is, the available area for disposing other electronic components on the circuit board is reduced, which does not make much progress and contribution to saving the overall space and increasing the power density

Therefore, how to design a single multiphase non-coupled inductor by improving the structure design, which can not only reduce the volume but also increase the power density to overcome the above-mentioned drawbacks, has become one of the important issues to be solved in this field.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that, not enough to prior art provides a polyphasic inductance structure.

In order to solve the technical problem, the utility model discloses one of them technical scheme who adopts is, provides a polyphasic inductance structure, and it includes a main iron core body, a plurality of inferior iron core bodies, a plurality of main coils and a plurality of time coil. The main iron core body is provided with a plurality of grooves, and a plurality of partition walls are formed among the grooves. The multiple secondary iron core bodies are respectively arranged in the multiple grooves. The plurality of main coils are respectively arranged in the plurality of grooves and respectively correspond to the plurality of secondary iron core bodies, each main coil is respectively positioned between the main iron core body and the corresponding secondary coil, each main coil is provided with a first end part and a second end part which extend towards opposite directions, and the first end part and the second end part are exposed out of the main iron core body. The plurality of secondary coils are respectively arranged in the plurality of grooves and respectively correspond to the plurality of main coils, each secondary coil is respectively positioned between the main coil and the corresponding secondary iron core body, each secondary coil is provided with a third end part and a fourth end part which extend towards opposite directions, and the third end part and the fourth end part are exposed out of the main iron core body. The main iron core body is coupled with the corresponding secondary iron core body, the main coil and the secondary coil in each groove to form an inductor, and the plurality of inductors are not mutually coupled.

Preferably, the multi-phase inductor structure further includes at least one metal connecting piece for connecting two adjacent secondary coils of the plurality of secondary coils, and the at least one metal connecting piece connects the third end of one secondary coil of the two adjacent secondary coils with the fourth end of the other secondary coil.

Preferably, the multiphase inductance structure further includes two first metal conducting parts and two corresponding second metal conducting parts, the two first metal conducting parts are respectively disposed at the bottoms of the two opposite side walls of the main iron core body, one of the second metal conducting parts is used for connecting the corresponding first metal conducting part with the third end portion of the adjacent secondary coil, and the other second metal conducting part is used for connecting the corresponding first metal conducting part with the fourth end portion of the adjacent secondary coil.

Preferably, the top surface of the main iron core body is further provided with a plurality of through holes, and the through holes respectively correspond to and are communicated with the grooves.

Preferably, each primary coil and the corresponding secondary coil are insulated from each other.

Preferably, a gap is formed between the primary core body and any one of the secondary core bodies, and each inductor is used for adjusting the generated inductance value by changing the size of the gap.

Preferably, the bottom surfaces of the first end portion and the second end portion of the main coil protrude from the main core body.

Preferably, bottom surfaces of the third and fourth end portions of the sub-coil are higher than bottom surfaces of the first and second end portions of the main coil.

Preferably, the first end and the second end of each primary coil and the third end and the fourth end of the corresponding secondary coil are arranged in a straight line.

Preferably, the first end and the second end of each main coil extend in a direction away from each other, and the third end and the fourth end of each sub-coil extend in a direction toward each other.

The utility model discloses an one of them beneficial effect lies in, the utility model discloses a "a plurality of main coils set up respectively in a plurality of recesses and correspond a plurality of time coils respectively, and a plurality of time coils set up respectively in a plurality of recesses and correspond a plurality of time iron core bodies respectively" and "main iron core body is used for with each recess in the corresponding time iron core body, main coil and time coil phase coupling are in order to form an inductance, and a plurality of inductances are the technical scheme of mutual coupling" each other not to provide a single body's multiphase inductance structure, in order to reach the efficiency of practicing thrift whole space and improving power density.

For a further understanding of the nature and technical content of the present invention, reference should be made to the following detailed description and accompanying drawings, which are provided for reference and illustration purposes only and are not intended to limit the invention.

Drawings

Fig. 1 is a first schematic perspective view of the multiphase inductor structure of the present invention.

Fig. 2 is a second schematic perspective view of the multiphase inductor structure of the present invention.

Fig. 3 is a first exploded schematic view of the multiphase inductor structure of the present invention.

Fig. 4 is a second exploded schematic view of the multiphase inductor structure of the present invention.

Fig. 5 is a schematic side view of the multiphase inductor structure of the present invention.

Fig. 6 is a schematic front view of the multiphase inductor structure of the present invention.

Detailed Description

The following is a description of the embodiments of the present invention relating to a "multiphase inductance structure" with specific embodiments, and those skilled in the art can understand the advantages and effects of the present invention from the disclosure of the present invention. The present invention may be practiced or carried out in other different embodiments, and various modifications and changes may be made in the details of this description based on the different points of view and applications without departing from the spirit of the present invention. The drawings of the present invention are merely schematic illustrations, and are not drawn to scale, but are described in advance. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used primarily to distinguish one element from another. Additionally, the term "or" as used herein is intended to include any one or combination of the associated listed items, as the case may be.

Examples

Referring to fig. 1 to 4, fig. 1 and 2 are schematic perspective views of a multi-phase inductor structure at different viewing angles, respectively, and fig. 3 and 4 are schematic exploded views of the multi-phase inductor structure according to the present invention, respectively. The embodiment of the utility model provides a polyphasic inductance structure M, it includes: a main iron core body 1, a plurality of secondary iron core bodies 2, a plurality of main coils 3 and a plurality of secondary coils 4.

In view of the above, in the present embodiment, the number of the secondary core body 2, the primary coil 3 and the secondary coil 4 is six, but the present invention is not limited thereto. As shown in fig. 4, the main iron core body 1 is provided with a plurality of grooves 11, and the openings of the plurality of grooves 11 are opened toward the bottom of the main iron core body 1. Similarly, the number of the grooves 11 is six, but the present invention is not limited thereto. A plurality of partition walls 12 are formed between the plurality of grooves 11, and the plurality of partition walls 12 partition the plurality of grooves 11 so that the plurality of grooves 11 do not communicate with each other. The plurality of secondary iron core bodies 2 are respectively arranged in the plurality of grooves 11, the plurality of main coils 3 are respectively arranged in the plurality of grooves 11 and respectively correspond to the plurality of secondary iron core bodies 2, and the plurality of secondary coils 4 are respectively arranged in the plurality of grooves 11 and respectively correspond to the plurality of main coils 3. In other words, each of the recesses 11 in the present embodiment can accommodate one secondary core body 2, one primary coil 3, and one secondary coil 4. Further, each of the primary coils 3 is located between the primary core body 1 and the corresponding secondary coil 4, and each of the secondary coils 4 is located between the primary coil 3 and the corresponding secondary core body 2. In addition, each main coil 3 includes a main body 30, and a first end 31 and a second end 32 connected to two ends of the main body 30 and extending in directions away from each other, and the main body 30 is in an inverted "U" shape to form an accommodation space. Each of the sub-coils 4 includes a main body 40, and a third end 41 and a fourth end 42 connected to two ends of the main body 40 and extending in a direction toward each other, and the main body 40 is in an inverted "U" shape to form another accommodating space.

Thus, for example, the main coils 3 may have a "zigzag" shape (or "Ω" shape), that is, the first end 31 and the second end 32 of each main coil 3 extend away from each other. The secondary coils 4 are, for example, in a "C" shape, i.e. the third end 41 and the fourth end 42 of each secondary coil 4 extend in a direction towards each other. However, the present invention is not limited to the shape of the primary coil 3 and the secondary coil 4. For example, the primary coil 3 and the secondary coil 4 may be flat coils formed by bending a metal member (such as, but not limited to, a copper sheet) by stamping. However, the present invention is not limited to the formation of the primary coil 3 and the secondary coil 4. In addition, for example, the constituent material of the primary iron core 1 and the secondary iron core 2 may be ferrite or a soft magnetic material. However, the present invention is not limited to the constituent materials of the main core body 1 and the sub core body 2.

Referring to fig. 4 and 5, fig. 5 is a schematic side view of the multiphase inductance structure M of the present invention. When the plurality of secondary cores 2, the plurality of primary coils 3, and the plurality of secondary coils 4 are disposed in the plurality of grooves 11, the secondary coil 4 surrounds the secondary core 2, and the primary coil 3 surrounds the secondary coil 4 and the secondary core 2 in each of the grooves 11. Thus, in the assembly sequence, each main coil 3 is disposed in a corresponding groove 11 of the main core body 1; next, the secondary coil 4 is disposed in the accommodating space formed by the main body 30 of the primary coil 3; next, the secondary core body 2 is disposed in the accommodation space formed by the body portion 40 of the secondary coil 4. However, it should be noted that each of the primary coils 3 and the corresponding secondary coil 4 are insulated from each other, but the primary core body 1 and the plurality of primary coils 3 do not necessarily need to be insulated from each other, and each of the secondary coils 4 and the corresponding secondary core body 2 do not necessarily need to be insulated from each other. Thus, in the present embodiment, in the main core body 1 and the six secondary core bodies 2, the six main coils 3, and the six secondary coils 4, the main core body 1 is coupled with the corresponding secondary core body 2, main coil 3, and secondary coil 4 in each groove 11 to form an inductor (each inductor includes a part of the main core body 1, one main coil 3, one secondary coil 4, and one secondary core body 2), and a plurality of inductors are not coupled with each other. In addition, the first end portion 31 and the second end portion 32 of the main coil 3 and the third end portion 41 and the fourth end portion 42 of the secondary coil 4 are exposed to the main core body 1, more specifically, to the bottom of the main core body 1, and the first end portion 31 and the second end portion 32 of each main coil 3 and the corresponding third end portion 41 and fourth end portion 42 of the secondary coil 4 are linearly arranged, but the present invention is not limited thereto, and in other embodiments, the first end portion 31, the second end portion 32, the third end portion 41 and the fourth end portion 42 may not be linearly arranged. The first end 31 and the second end 32 of main iron core body 1 and the third end 41 and the fourth end 42 of inferior iron core body 2 can be regarded as the utility model discloses a polyphasic inductance structure M electric property couples conducting Pad (Pad) on the Circuit Board (Printed Circuit Board, PCB), or conductive pin. Therefore, in the present embodiment, 24 conductive pads are formed by the six primary windings 3 and the six secondary windings 4.

Next, as shown in fig. 3 and fig. 4, the multi-phase inductor structure M further includes at least one metal connecting piece 5, the at least one metal connecting piece 5 is used to connect two adjacent secondary coils 4 of the plurality of secondary coils 4, and the at least one metal connecting piece 5 connects the third end 41 of one secondary coil 4 of the two adjacent secondary coils 4 and the fourth end 42 of the other secondary coil 4. The utility model discloses do not restrict the quantity of metal connecting piece 5, the quantity of metal connecting piece 5 can be adjusted according to the actual demand. In the present embodiment, an example in which six sub-coils 4 are connected to five metal connection pieces 5 will be described. Further, in the six secondary coils 4 of the present embodiment, the six secondary coils can be further divided into a first secondary coil 4, a second secondary coil 4, a third secondary coil 4, a fourth secondary coil 4, a fifth secondary coil 4 and a sixth secondary coil 4 from right to left, and the five metal connecting pieces 5 are also divided into a first metal connecting piece 5, a second metal connecting piece 5, a third metal connecting piece 5, a fourth metal connecting piece 5 and a fifth metal connecting piece 5 from right to left. The first metal connecting piece 5 connects the third end 41 of the first secondary coil 4 and the fourth end 42 of the second secondary coil 4, the second metal connecting piece 5 connects the third end 41 of the second secondary coil 4 and the fourth end 42 of the third secondary coil 4, the third metal connecting piece 5 connects the third end 41 of the third secondary coil 4 and the fourth end 42 of the fourth secondary coil 4, the fourth metal connecting piece 5 connects the third end 41 of the fourth secondary coil 4 and the fourth end 42 of the fifth secondary coil 4, and the fifth metal connecting piece 5 connects the third end 41 of the fifth secondary coil 4 and the fourth end 42 of the sixth secondary coil 4.

In addition, referring to fig. 5 and 6, fig. 6 is a schematic front view of the multiphase inductor structure of the present invention. The utility model discloses a multiphase inductance structure M still includes two first metal lead union pieces 6 (terminal) and two second metal lead union pieces 7 that correspond, two first metal lead union pieces 6 set up respectively in the relative both sides wall 1L of main iron core body 1, 1R's bottom (as shown in fig. 6), one of them second metal lead union piece 7 is used for connecting the first metal lead union piece 6 that corresponds and the third end 41 of adjacent secondary coil 4, another second metal lead union piece 7 is used for connecting the first metal lead union piece 6 that corresponds and the fourth end 42 of adjacent secondary coil 4. Therefore, the utility model discloses a design of second metal lead connector 7 guides the conductive pin (be the conducting pad) of the single coil pack that a plurality of secondary coils 4 formed to the bottom of both sides wall 1L, 1R of main iron core 1 for heterogeneous inductance structure M can directly be coupled on the circuit board as conductive pin through first metal lead connector 6 and second metal lead connector 7. However, in other embodiments, the second metal lead 7 may be used alone as a conductive pin, that is, the first metal lead 6 is used only as an auxiliary. It is worth mentioning that the utility model discloses in, can be through the subassembly that forms of various connected mode (for example welding, crimping etc.) between six secondary coil 4, five metal connecting piece 5, two first metal lead connecting pieces 6 and two second metal lead connecting pieces 7, perhaps single subassembly for integrated into one piece for six secondary coil 4 and five metal connecting piece 5, two first metal lead connecting pieces 6 and two second metal lead connecting pieces 7 form the single coil unit that switches on each other.

In addition, as shown in fig. 3, the top surface 1T of the main iron core body 1 is further provided with a plurality of through holes 13, the through holes 13 correspond to and communicate with the grooves 11, respectively, and the multi-phase inductor structure M of the present invention further includes a cover plate 8, wherein the cover plate 8 is used for covering the top surface 1T of the main iron core body 1. However, the present invention is not limited thereto.

Next, refer to FIG. 4 and FIG. 5. The bottom surfaces of the first end 31 and the second end 32 of the main coil 3 are protruded from the main core body 1, that is, if it is seen from fig. 5, a distance H1 between the bottom surfaces of the first end 31 and the second end 32 of the main coil 3 and a top surface 1T of the main core body 1 is greater than a distance H between the top surface 1T of the main core body 1 and a bottom surface of one of the partition walls 12. In addition, the bottom surfaces of the third end portion 41 and the fourth end portion 42 of the secondary coil 4 are higher than the bottom surfaces of the first end portion 31 and the second end portion 32 of the primary coil 3, that is, if it is seen from fig. 5, a distance H2 between the bottom surfaces of the third end portion 41 and the fourth end portion 42 of the secondary coil 4 and a top surface 1T of the primary iron core 1 is equal to a distance H between the top surface 1T of the primary iron core 1 and a bottom surface of one of the partition walls 12. In other words, the distance H1 between the bottom surfaces of the first end 31 and the second end 32 of the main coil 3 and a top surface 1T of the main core 1 is greater than the distance H2 between the bottom surfaces of the third end 41 and the fourth end 42 of the secondary coil 4 and the top surface 1T of the main core 1. Thereby, although the first and

second end portions

31 and 32 of the primary coil 3 and the third and

fourth end portions

41 and 42 of the secondary coil 4 are exposed to the primary core body 1, the end portions of the primary coil 3 and the end portions of the secondary coil 4 are not equal in height to form a height difference. Among the prior art, will form all conducting pads (or conductive pin) in the multiphase inductance structure on the coplanar technology degree of difficulty relatively higher, and because the quantity of conducting pad is more and the position is comparatively inseparable, the user will be coupled all conducting pads in the circuit board the degree of difficulty also great, consequently, the utility model discloses borrow and form a difference in height between the tip with main coil 3 and the tip of secondary coil 4 to utilize this difference in height to set up the third tip 41 and the fourth tip 42 of a plurality of metal connecting pieces 5 with a plurality of secondary coils 4 of electric connection, again in the external two second metal guide union pieces 7 of structure both sides, in order to guide out conductive pin, with reduce the degree of difficulty that is coupled on the circuit board.

In addition, as shown in fig. 4 and fig. 6, fig. 6 is a schematic front view of the multiphase inductor structure of the present invention. In each of the grooves 11, a gap G exists between the main core body 1 and any one of the sub core bodies 2. It is worth mentioning that the present invention does not limit the specific size of the gap G, and each inductor in the multiphase inductor structure M can adjust the generated inductance value by changing the size of the gap G. Note that the present invention is not limited to the form of forming the gap G. For example, two core bodies (i.e. the primary core body 1 and any one of the secondary core bodies 2) can be directly spaced apart, i.e. air is used as an air gap; alternatively, various non-ferromagnetic materials may be provided between the two core bodies, such as mylar sheets, kraft paper sheets, plastic sheets, glass sheets, and the like.

Advantageous effects of the embodiments

The utility model discloses an one of them beneficial effect lies in, the utility model discloses a "a plurality of main coils 3 set up respectively in a plurality of recesses 11 and correspond a plurality of time coils 4 respectively, and a plurality of time coils 4 set up respectively in a plurality of recesses 11 and correspond a plurality of time iron core bodies 2" respectively and "main iron core body 1 is used for with each recess 11 in corresponding time iron core body 2, main coil 3 and time coil 4 are coupled in order to form an inductance, and a plurality of inductances are the technical scheme of mutual decoupling mutually not" each other, in order to provide a single polyphasic inductance structure, in order to reach the efficiency of practicing thrift whole space and improving power density.

Furthermore, the utility model provides a polyphasic inductance structure M is a monomer formula polyphasic inductance structure, consequently, compares in the inductance structure that prior art polyphasic inductance structure constitutes for a plurality of monomer inductances, the utility model provides a polyphasic inductance structure M's volume is less, consequently less occupation the available area on the circuit board. In addition, the multi-phase inductor structure in the prior art is composed of a plurality of single inductors, and therefore, heat generated by each single inductor during operation can be dissipated only by the structure of the single inductor. Compared with the prior art, the utility model provides a heterogeneous inductance structure M is owing to be the heterogeneous inductance structure of monomer formula, consequently can borrow other inductance structure conduction and dispel the heat when the produced heat of one of them inductance when the function, that is to say, the utility model provides a heterogeneous inductance structure M is compared in the heterogeneous inductance structure who comprises a plurality of monomer inductances among the prior art, and its radiating efficiency is obviously better.

The above disclosure is only a preferred and practical embodiment of the present invention, and is not intended to limit the scope of the claims, so that all the modifications of the equivalent technology made by the disclosure and the attached drawings are included in the scope of the claims.

Claims

1. A multi-phase inductor structure, comprising:

the main iron core body is provided with a plurality of grooves, and a plurality of partition walls are formed among the grooves;

the secondary iron core bodies are respectively arranged in the grooves;

the main coils are respectively arranged in the grooves and respectively correspond to the secondary iron core bodies, each main coil is provided with a first end part and a second end part which extend towards opposite directions, and the first end parts and the second end parts are exposed out of the main iron core bodies; and

a plurality of secondary coils respectively arranged in the plurality of grooves and respectively corresponding to the plurality of main coils, wherein each secondary coil is provided with a third end part and a fourth end part which extend towards opposite directions, and the third end part and the fourth end part are exposed out of the main iron core body;

each primary coil is respectively positioned between the primary iron core body and the corresponding secondary coil, and each secondary coil is respectively positioned between the primary coil and the corresponding secondary iron core body;

the primary iron core body is used for being coupled with the secondary iron core body, the primary coil and the secondary coil corresponding to each groove to form an inductor, and the inductors are not coupled with one another.

2. The multi-phase inductor structure of claim 1, further comprising: the metal connecting sheet is used for connecting two adjacent secondary coils in the secondary coils, and the metal connecting sheet is used for connecting the third end part of one secondary coil and the fourth end part of the other secondary coil in the two adjacent secondary coils.

3. The multi-phase inductor structure of claim 2, further comprising: the two first metal guide connecting pieces are respectively arranged at the bottoms of two opposite side walls of the main iron core body, one of the two second metal guide connecting pieces is used for connecting the corresponding first metal guide connecting piece with the third end part of the adjacent secondary coil, and the other one of the two second metal guide connecting pieces is used for connecting the corresponding first metal guide connecting piece with the fourth end part of the adjacent secondary coil.

4. The multiphase inductance structure of claim 1, wherein a plurality of through holes are further formed in the top surface of the main core body, and the through holes respectively correspond to and communicate with the grooves.

5. The multi-phase inductor structure of claim 1, wherein each primary winding and the corresponding secondary winding are insulated from each other.

6. The multi-phase inductor structure of claim 1, wherein a gap is formed between the primary core body and any one of the secondary core bodies, and each inductor is configured to adjust a generated inductance value by changing a size of the gap.

7. The multi-phase inductor structure of claim 1, wherein bottom surfaces of the first end portion and the second end portion of the main coil protrude from the main core body.

8. The multi-phase inductor structure of claim 1, wherein bottom surfaces of the third and fourth ends of the secondary winding are higher than bottom surfaces of the first and second ends of the primary winding.

9. The multiphase inductor structure of claim 1, wherein said first end and said second end of each of said primary coils and said third end and said fourth end of said corresponding secondary coil are arranged in a straight line.

10. The multi-phase inductor structure of claim 9, wherein the first end and the second end of each primary winding extend away from each other, and the third end and the fourth end of each secondary winding extend away from each other.