CN214254054U - Magnetic integrated device - Google Patents

Abstract

A magnetic integrated device comprises a bottom plate, and a transformer and two inductors which are arranged on the bottom plate. The transformer comprises a first magnetic core, a second magnetic core, a first framework and a first winding which is wound on the first framework. The first magnetic core includes a first leg and the second magnetic core includes a second leg. The first framework comprises a first peripheral wall and a first convex strip. The first peripheral wall surrounds to form a first accommodating space. The first core column and the second core column are contained in the first containing space. The first rib is located between the first peripheral wall and the first core column and/or located between the first peripheral wall and the second core column. The two inductors are respectively positioned at two sides of the transformer. The inductor comprises a third magnetic core, a second framework and a second winding wound on the second framework. The third magnetic core includes a third leg. The second skeleton includes a second peripheral wall. The second peripheral wall surrounds to form a second accommodating space. The third core column is contained in the second containing space.

Description

Magnetic integrated device

Technical Field

The application relates to the technical field of electromagnetism, in particular to a magnetic integrated device.

Background

In many fields such as aerospace, electric vehicles and photovoltaic power generation, transformers are one of essential parts. In many cases, an inductor is used in conjunction with the transformer in addition to the transformer. However, the transformer and the inductor used in combination generate a large amount of heat during operation, and the heat generated by the transformer and the inductor cannot be dissipated in time after long operation time, thereby affecting the operation performance and the service life of the transformer and the inductor.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a magnetic integrated device to solve the above problems.

A magnetic integrated device comprises a bottom plate, a transformer and two inductors, wherein the transformer is arranged on the bottom plate and comprises a first magnetic core, a second magnetic core, a first framework and a first winding, the first magnetic core comprises a first core column, the second magnetic core comprises a second core column, the first framework comprises a first peripheral wall and a plurality of first convex strips, the first peripheral wall surrounds to form a first accommodating space, the first convex strips are convexly arranged on the first peripheral wall and positioned in the first accommodating space, the first core column and the second core column are accommodated in the first accommodating space, the first convex strips are positioned between the first peripheral wall and the first core column and/or between the first peripheral wall and the second core column, and the first winding surrounds the first peripheral wall; the two inductors are arranged on the bottom plate and are respectively positioned on two sides of the transformer, each inductor comprises a third magnetic core, a second framework and a second winding, the third magnetic core comprises a third core column, the second framework comprises a second peripheral wall, the second peripheral wall surrounds to form a second accommodating space, the third core column is accommodated in the second accommodating space, and the second winding is wound on the second peripheral wall.

In some embodiments, the vertical distance from each point on the outer surface of the first stem to the first perimeter wall is the same, and the vertical distance from each point on the outer surface of the second stem to the first perimeter wall is the same.

In some embodiments, the first peripheral wall includes a first side wall, a second side wall and a third side wall opposite to the first side wall, and a fourth side wall opposite to the third side wall, the first side wall and the second side wall are respectively connected between the third side wall and the fourth side wall to form the first accommodating space together with the third side wall and the fourth side wall, the first protruding strip is respectively disposed on each of the first side wall, the second side wall, the third side wall and the fourth side wall, at least one of the first side wall, the second side wall, the third side wall and the fourth side wall is provided with a plurality of first through holes, and the plurality of first through holes are communicated with the first accommodating space.

In some embodiments, the area of engagement between the first sidewall and the third sidewall, the area of engagement between the first sidewall and the fourth sidewall, the area of engagement between the second sidewall and the third sidewall, and the area of engagement between the second sidewall and the fourth sidewall are each arcuate.

In some embodiments, the first magnetic core further includes a first panel and two oppositely disposed first side plates, the two first side plates are respectively disposed on two sides of the first panel to jointly form a first receiving slot, the first core pin is disposed on the first panel and located in the first receiving slot, the second magnetic core further includes a second panel opposite to the first panel and two oppositely disposed second side plates, the two second side plates are respectively disposed on two sides of the second panel to jointly form a second receiving slot, the second core pin is disposed on the second panel and located in the second receiving slot, the first framework is received in a space defined by the first receiving slot and the second receiving slot, the two first side plates are respectively disposed in one-to-one correspondence with the two second side plates, and each first side plate is spaced apart from the corresponding second side plate, to form a first air gap.

In some embodiments, the bottom plate includes a first surface, the transformer and the two inductors are disposed on the first surface, the first surface is formed with a groove, the groove includes a groove bottom and two oppositely disposed first and second groove sides, the first groove side is connected to the first surface and the first groove bottom, the second groove side is connected to the first surface and the second groove side, and the groove bottom is formed with a plurality of through holes.

In some embodiments, the bottom plate further includes a second surface facing away from the first surface, the second surface is provided with a plurality of wire accommodating grooves, and the plurality of wire accommodating grooves are communicated with the corresponding through holes.

In some embodiments, the first winding includes a first winding coil wound around the first peripheral wall and a first lead and a second lead connected to the first winding coil, the second winding includes a second winding coil wound around the second peripheral wall and a third lead connected to the second winding coil, and the first lead, the second lead and the third lead respectively pass through the corresponding through holes and are accommodated in the corresponding wire accommodating grooves.

In some embodiments, the first frame further includes a first connecting portion and a second connecting portion respectively disposed at two ends of the first peripheral wall; the first connecting part comprises a first connecting part body connected with the first peripheral wall, a first matching part and a second matching part connected with the first connecting part body, and two first limiting parts, the first matching part and the second matching part are oppositely arranged, and the two first limiting parts are arranged on the surface of the second matching part, which is back to the first matching part, and are accommodated in the groove; the second connecting portion comprises a second connecting portion body connected with the first peripheral wall, a third matching portion and a fourth matching portion connected with the second connecting portion body, and two second limiting portions, the third matching portion and the fourth matching portion are arranged oppositely, and the two second limiting portions are arranged on the surface, back to the third matching portion, of the fourth matching portion and are contained in the grooves.

In some embodiments, the magnetic integrated device further includes a cover plate disposed on the second surface and covering the plurality of wire accommodating grooves.

In summary, the magnetic integrated device in some embodiments of the present application increases the gap between the first skeleton and the first magnetic core and between the second magnetic cores by means of the design of the plurality of first protruding strips, so that the magnetic integrated device provides more glue filling spaces while performing glue filling, thereby improving the heat dissipation performance of the magnetic integrated device.

Drawings

Fig. 1 is a schematic structural diagram of a magnetic integrated device according to an embodiment of the present application.

FIG. 2 is a schematic sectional view taken along line II-II of FIG. 1.

Fig. 3 is a schematic structural diagram of the first magnetic core, the second magnetic core, the third magnetic core, the first insulating film and the second insulating film shown in fig. 1.

Fig. 4 is a partial structural schematic diagram of the magnetic integrated device shown in fig. 1.

Fig. 5 is a partial structural view of the magnetic integrated device shown in fig. 1.

Fig. 6 is a schematic structural diagram of the first framework shown in fig. 1.

Fig. 7 is a schematic structural diagram of the first framework shown in fig. 6 under another viewing angle.

Fig. 8 is a schematic structural view of the second frame shown in fig. 1.

Fig. 9 is a schematic structural diagram of the second framework shown in fig. 8 under another viewing angle.

Fig. 10 is an exploded view of a portion of the magnetic integrated device shown in fig. 4.

Fig. 11 is a schematic structural view of the base plate shown in fig. 10.

Fig. 12 is a schematic structural view of the cover plate shown in fig. 10.

Fig. 13 is a partial structural view of the magnetic integrated device shown in fig. 1.

Fig. 14 is a schematic structural view of a magnetic integrated device according to another embodiment of the present application.

Description of the main elements

Magnetic integrated device 1

Base plate 10

First surface 11

Second surface 12

Groove 13

Groove bottom surface 131

First groove side 132

Second groove side 133

Through-hole 134

First mounting groove 14

First mounting groove bottom 141

First mounting post 142

First mounting post 1421

First hook 1422

Second mounting groove 15

Second mounting groove bottom 151

Second mounting post 152

Second mounting post 1521

Second hook 1522

Wire-accommodating groove 16

Transformer 20

First skeleton 21

First peripheral wall 211

First edge 211a

Second edge 211b

First side wall 2111

Second side wall 2112

Third side wall 2113

Fourth side wall 2114

First convex strip 212

First accommodation space 213

First void 214

First via 215

First connection portion 216

First connecting part body 2161

First notch 2161a

Second notch 2161b

First concave edge 2161c

Second concave edge 2161d

First mating portion 2162

Second mating portion 2163

First mating bottom 2163a

First mating side panel 2163b

Second mating side panel 2163c

First mounting plate 2163d

Second mounting plate 2163e

First limiting part 2164

First limit post 2164a

Second connecting portion 217

Second connecting part body 2171

Third gap 2171a

Fourth notch 2171b

Third recessed edge 2171c

Fourth recessed edge 2171d

Third fitting portion 2172

Fourth mating portion 2173

Second mating floor 2173a

Third mating side panel 2173b

Fourth mating side panel 2173c

Third mounting plate 2173d

Fourth mounting plate 2173e

Second limiting portion 2174

Second restraint post 2174a

First magnetic core 22

First stem 221

First panel 222

First side plate 223

First housing groove 224

Second magnetic core 23

Second stem 231

Second panel 232

Second side plate 233

Second receiving groove 234

First winding 24

First winding coil 241

First lead 242

Second lead 243

First air gap 25

First insulating film 26

Inductor 30

Second skeleton 31

Second peripheral wall 311

Third edge 311a

Fourth edge 311b

Fifth side wall 3111

Sixth side wall 3112

Seventh side wall 3113

Eighth side wall 3114

Second convex strip 312

Second receiving space 313

Second gap 314

Second via 315

Third connecting part 316

Third connecting part body 3161

Fifth notch 3161a

Sixth notch 3161b

Fifth concave edge 3161c

Sixth concave edge 3161d

Fifth mating part 3162

Sixth mating portion 3163

Third mating bottom plate 3163a

Fifth mating side plate 3163b

Sixth mating side plate 3163c

Fifth mounting plate 3163d

Sixth mounting plate 3163e

Third position-limiting part 3164

Third position-limiting column 3164a

Fourth connecting portion 317

Fourth connection part body 3171

Seventh notch 3171a

Eighth notch 3171b

Seventh concave edge 3171c

Eighth concave edge 3171d

Seventh matching part 3172

Eighth mating portion 3173

Connector tile 3173a

First mounting block 3173b

Second mounting block 3173c

First mating plate 3173d

Second mating plate 3173e

Third magnetic core 32

Third stem 321

Third panel 322

Third side plate 323

The third receiving groove 324

Second winding 33

Second winding coil 331

Third lead 332

Second air gap 34

Second insulating rubber sheet 35

Cover plate 40

Through hole 41

Third mounting post 42

Third mounting cylinder 421

Third hook 422

First connection terminal 51

Second connection terminal 52

Third connection terminal 53

Fixing part 60

Stud 70

The following detailed description will further illustrate the present application in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1, some embodiments of the present application provide a magnetic integrated device 1 including a base plate 10, a transformer 20, two inductors 30, and a cover plate 40. The transformer 20 and the two inductors 30 are disposed on the base plate 10.

In some embodiments, referring to fig. 1, the transformer 20 is disposed on the chassis base 10. The transformer 20 includes a first bobbin 21, a first magnetic core 22, a second magnetic core 23, and a first winding 24 wound around the first bobbin 21. Wherein, the first magnetic core 22 and the second magnetic core 23 are both disposed on the bottom plate 10.

In some embodiments, referring to fig. 6, the first frame 21 includes a first peripheral wall 211 and a plurality of first protruding strips 212. The first peripheral wall 211 surrounds a first receiving space 213. The plurality of first protruding strips 212 are protruded from the first peripheral wall 211 and are located in the first receiving space 213. Referring to fig. 5, the first peripheral wall 211 is opposite to the bottom plate 10 and spaced apart from the bottom plate to form a first gap 214. In this way, the conductive wire in the first winding 24 can be wound around the first peripheral wall 211 through the first gap 214.

Referring to fig. 2, 3 and 6, the first magnetic core 22 includes a first leg 221. The first stem 221 is accommodated in the first accommodating space 213. The second magnetic core 23 includes a second leg 231. The second core leg 231 is accommodated in the first accommodation space 213 and connected to the first core leg 221. Wherein the plurality of first protruding strips 212 are located between the first peripheral wall 211 and the second stem 231, and/or between the first peripheral wall 211 and the first stem 221. So, having guaranteed first magnetic core 22 with under the prerequisite of the sectional area of second magnetic core 23, magnetism integrated device 1 in some embodiments of this application with the help of the design of a plurality of first sand grips 212 has increased first skeleton 21 with first magnetic core 22 with space between the second magnetic core 23, for the convenience in the glue filling of magnetism integrated device 1, still do magnetism integrated device 1 provides more glue filling spaces, in order to improve magnetism integrated device 1's heat dispersion.

In some embodiments, the perpendicular distances from each point on the outer surface of the first leg 221 to the first perimeter wall 211 are the same. The vertical distances from each point on the outer surface of the second stem 231 to the first peripheral wall 211 are the same. Therefore, when the magnetic integrated device 1 is filled with glue, the heat conducting glue is distributed uniformly between the first core column 221 and the first peripheral wall 211, and between the second core column 231 and the first peripheral wall 211, so that the problem of uneven heat dissipation of the magnetic integrated device 1 in the working process can be effectively avoided.

In a further embodiment, the perpendicular distance from the outer surface of the first stem 221 to the first peripheral wall 211 is the same as the perpendicular distance from the outer surface of the second stem 231 to the first peripheral wall 211.

In the present embodiment, referring to fig. 6, the first frame 21 includes four first protruding strips 212 arranged at intervals. The first peripheral wall 211 includes a first edge 211a and a second edge 211b opposite to the first edge 211 a. Each of the four first protruding strips 212 extends from the second edge 211b toward the first edge 211 a. Referring to fig. 2, the four first protruding strips 212 are located between the first peripheral wall 211 and the second stem 231.

It is understood that, in other embodiments, the number of the first protruding strips 212 may be increased or decreased according to actual requirements, and may be one, two, three, or five, and the like, which is not limited herein.

Further, in the present embodiment, referring to fig. 6, the first peripheral wall 211 has a rectangular longitudinal section and includes a first side wall 2111, a second side wall 2112, a third side wall 2113, and a fourth side wall 2114. The first side wall 2111 and the second side wall 2112 are disposed opposite to each other, and the third side wall 2113 and the fourth side wall 2114 are disposed opposite to each other. The first side wall 2111 and the second side wall 2112 are respectively connected between the third side wall 2113 and the fourth side wall 2114, so as to form the first accommodating space 213 together with the third side wall 2113 and the fourth side wall 2114. The first protruding strip 212 is disposed on each of the first side wall 2111, the second side wall 2112, the third side wall 2113, and the fourth side wall 2114.

In some embodiments, referring to fig. 6, the connection region between the first side wall 2111 and the third side wall 2113, the connection region between the first side wall 2111 and the fourth side wall 2114, the connection region between the second side wall 2112 and the third side wall 2113, and the connection region between the second side wall 2112 and the fourth side wall 2114 are all arc-shaped, so that the winding space of the first winding 24 is increased; the gaps between the first framework 21 and the first magnetic core 22 and the second magnetic core 23 are greatly increased, so that the magnetic integrated device 1 is convenient to glue, and more glue pouring spaces are provided for the magnetic integrated device 1 to improve the heat dissipation performance of the magnetic integrated device 1 at the same time.

It is understood that, in other embodiments, the shape of the longitudinal section of the first peripheral wall 211 may be adjusted adaptively according to actual needs, and may also be circular, and the like, which is not limited herein.

In some embodiments, referring to fig. 6, a plurality of first through holes 215 are opened on at least one of the first side wall 2111, the second side wall 2112, the third side wall 2113, and the fourth side wall 2114. In this embodiment, the first side wall 2111, the second side wall 2112, the third side wall 2113, and the fourth side wall 2114 are all provided with the plurality of first through holes 215. The first through hole 215 communicates with the first receiving space 213. The first through hole 215 is designed to assist the first winding 24 wound around the first peripheral wall 211 in heat dissipation, and to provide more glue filling space for the magnetic integrated device 1 to improve the overall heat dissipation performance of the magnetic integrated device 1.

In some embodiments, referring to fig. 6, the first frame 21 further includes a first connection portion 216 and a second connection portion 217 connecting the first peripheral wall 211. In the present embodiment, the first connection portion 216 connects the first edge 211 a; the second connection portion 217 is connected to the second edge 211b and is disposed opposite to the first connection portion 216.

In this embodiment, referring to fig. 7, the first connection portion 216 includes a first connection portion body 2161, a first mating portion 2162, a second mating portion 2163, and two first limiting portions 2164. The first connection portion body 2161 is formed by the first edge 211a extending in a direction away from the first peripheral wall 211. Referring to fig. 5, a first notch 2161a is formed on a side of the first connecting portion 2161 opposite to the bottom plate 10; a second notch 2161b is opened at one side of the first connecting part body 2161 facing the bottom plate 10. The first notch 2161a forms a first concave edge 2161c on the first connector body 2161, and the second notch 2161b forms a second concave edge 2161d on the first connector body 2161. The first fitting portion 2162 is formed by the first concave side 2161c extending in a direction back to the second connection portion 217; the second fitting portion 2163 is formed by the second concave side 2161d extending in a direction back to the second connection portion 217. The first and second mating portions 2162, 2163 are oppositely disposed. The two first limiting parts 2164 are disposed on the surface of the second fitting part 2163 opposite to the first fitting part 2162.

Specifically, referring to fig. 7, the second fitting portion 2163 includes a first fitting bottom plate 2163a opposite to the bottom plate 10, two oppositely disposed first and second fitting side plates 2163b and 2163c, and first and second mounting plates 2163d and 2163e opposite to the bottom plate 10. The first mating side panel 2163b is connected between the first mating bottom panel 2163a and the first mounting plate 2163d, and the second mating side panel 2163c is connected between the first mating bottom panel 2163a and the second mounting plate 2163 e. The first mounting plate 2163d and the second mounting plate 2163e are respectively located at two sides of the second notch 2161 b. One of the first position limiting portions 2164 is disposed on the surface of the first mounting plate 2163d facing the bottom plate 10, and the other of the first position limiting portions 2164 is disposed on the surface of the second mounting plate 2163e facing the bottom plate 10. The two first limiting parts 2164 are used for cooperating with the bottom plate 10 to limit the position of the first framework 21 on the bottom plate 10. In addition, the two first limiting parts 2164 can also be used for limiting the first winding 24 and assisting the first winding 24 in wiring.

It is understood that, in other embodiments, two first limiting portions 2164 may be respectively disposed on the first mating side panel 2163b and the second mating side panel 2163c, which is not limited herein.

In some embodiments, referring to fig. 7, each of the first position-limiting portions 2164 includes two oppositely disposed first position-limiting posts 2164 a. The first positioning column 2164a is not limited to a column structure with a hook, and is not limited thereto.

It is understood that in other embodiments, the first position-limiting portion 2164 may include only one first position-limiting post 2164 a.

In other embodiments, at least one of the first mating portion 2162, the second mating portion 2163, and the first position-limiting portion 2164 of the first connecting portion 216 may be omitted.

In this embodiment, referring to fig. 7, the first notch 2161a is substantially U-shaped, and the second notch 2161b is substantially U-shaped. It is understood that in other embodiments, the shapes of the first notch 2161a and the second notch 2161b may be adjusted according to actual requirements, and may also be in a regular shape such as a semi-circle or other irregular shapes.

In this embodiment, referring to fig. 5 and 6, the second connecting portion 217 includes a second connecting portion body 2171, a third engaging portion 2172, a fourth engaging portion 2173, and two second limiting portions 2174. The second connecting portion body 2171 is formed by the second edge 211b extending in a direction away from the first peripheral wall 211. The second connection part body 2171 is opposite to the first connection part body 2161. The side of the second connecting portion 2171 opposite to the bottom plate 10 is opened with a third notch 2171a, and the side of the second connecting portion 2171 facing the bottom plate 10 is opened with a fourth notch 2171 b. The third gap 2171a forms a third recessed edge 2171c on the second connecting portion body 2171, and the fourth gap 2171b forms a fourth recessed edge 2171d on the second connecting portion body 2171. The third fitting portion 2172 is formed by the third recessed edge 2171c extending in a direction away from the first connection portion 216; the fourth fitting portion 2173 is formed by the fourth recessed edge 2171d extending in a direction away from the first connection portion 216. The third fitting portion 2172 and the fourth fitting portion 2173 are oppositely disposed. Two of the second limiting portions 2174 are disposed on the surface of the fourth matching portion 2173 opposite to the third matching portion 2172. The fourth notch 2171b is communicated with the second notch 2161b, so that the magnetic integrated device 1 can be filled with glue and the first winding 24 can be wired conveniently.

Specifically, referring to fig. 6, the fourth fitting portion 2173 includes a second fitting bottom plate 2173a opposite to the bottom plate 10, two oppositely disposed third and fourth fitting side plates 2173b and 2173c, and third and fourth mounting plates 2173d and 2173e opposite to the bottom plate 10. The third fitting side plate 2173b is connected between the second fitting bottom plate 2173a and the third mounting plate 2173d, and the fourth fitting side plate 2173c is connected between the second fitting bottom plate 2173a and the fourth mounting plate 2173 e. The third mounting plate 2173d and the fourth mounting plate 2173e are respectively located on both sides of the fourth notch 2171 b. One of the second limiting portions 2174 is disposed on the surface of the third mounting plate 2173d facing the bottom plate 10, and the other of the second limiting portions 2174 is disposed on the surface of the fourth mounting plate 2173e facing the bottom plate 10. The two second limiting portions 2174 are used to cooperate with the base plate 10 to limit the position of the first framework 21 on the base plate 10. In addition, the two second limiting portions 2174 are also used for cooperating with the two first limiting portions 2164 to limit the first winding 24, so as to regulate the wiring of the first winding 24.

It is understood that in other embodiments, two second limiting portions 2174 may be respectively disposed on the third and fourth mating side plates 2173b and 2173c, which is not limited herein.

In some embodiments, referring to fig. 6, each of the second restraint portions 2174 includes two oppositely disposed second restraint posts 2174 a. The second limiting column 2174a is not limited to a column structure with a hook, and is not limited herein.

It is understood that in other embodiments, the second retainer portion 2174 may include only one of the first retainer posts 2164 a.

In other embodiments, at least one of the third mating portion 2172, the fourth mating portion 2173, and the second restraining portion 2174 of the second connecting portion 217 may be optionally omitted.

In this embodiment, referring to fig. 6, the third notch 2171a is substantially U-shaped, and the fourth notch 2171b is substantially U-shaped. It is understood that in other embodiments, the shapes of the third and fourth gaps 2171a and 2171b may be adjusted according to actual requirements, and may also be in a regular shape such as a semicircle or other irregular shapes.

In some embodiments, referring to fig. 1 to 3, the first magnetic core 22 further includes a first panel 222 and two oppositely disposed first side plates 223. The two first side plates 223 are respectively disposed on two sides of the first panel 222 to form a first receiving groove 224. The first stem 221 is disposed on the first panel 222 and located in the first receiving groove 224. The second magnetic core 23 further includes a second panel 232 opposite to the first panel 222 and two second side plates 233 opposite to each other. The two second side plates 233 are respectively disposed on two sides of the second panel 232 to form a second receiving groove 234. The second stem 231 is disposed on the second panel 232 and located in the second receiving groove 234. The first frame 21 is sleeved on the first stem 221 and the second stem 231 and located between the first panel 222 and the second panel 232. The first magnetic core 22 is disposed on the bottom plate 10 through the two first side plates 223, and the second magnetic core 23 is disposed on the bottom plate 10 through the two second side plates 233.

It can be understood that, referring to fig. 1 to 6, the first leg 221 of the first magnetic core 22 is inserted into the first receiving space 213 from the first edge 211a of the first peripheral wall 211 to the second edge 211 b; and when the second stem 231 of the second magnetic core 23 is inserted into the first receiving space 213 from the second edge 211b of the first peripheral wall 211 toward the first edge 211a and contacts the first stem 221, one first side plate 223 of the first magnetic core 22 is connected to a corresponding second side plate 233 of the second magnetic core 23, and the other first side plate 223 of the first magnetic core 22 is connected to a corresponding second side plate 233 of the second magnetic core. At this time, the first bobbin 21 is accommodated in a space defined by the first accommodation groove 224 formed by the first core 22 and the second accommodation groove 234 formed by the second core 23. Meanwhile, the first panel 222 is located between the first and second fitting parts 2162 and 2163; the second panel 232 is positioned between the third mating portion 2172 and the fourth mating portion 2173.

In some embodiments, referring to fig. 1 to 3, a first air gap 25 is formed between each first side plate 223 and the corresponding second side plate 233. Wherein the first air gap 25 is used to avoid magnetic saturation phenomenon during operation of the magnetic integrated device 1.

In some embodiments, referring to fig. 1 to 3, a first insulating film 26 is disposed in the first air gap 25 to ensure that each first side plate 223 and the corresponding second side plate 233 are spaced apart from each other, so as to effectively prevent the magnetic integrated device 1 from being magnetically saturated during operation.

In some embodiments, referring to fig. 1, two inductors 30 are disposed on the bottom plate 10 and respectively located at two sides of the transformer 20. In the present embodiment, the structure of the two inductors 30 and the matching relationship between the two inductors 30 and the transformer 20, the bottom plate 10 and the cover plate 40 are the same. Therefore, only the structure and the matching relationship of one inductor 30 on one side of the transformer 20 will be described below, and the structure and the matching relationship of the other inductor 30 on the other side of the transformer 20 will not be described in detail.

In some embodiments, referring to fig. 1, the inductor 30 includes a second bobbin 31, a third magnetic core 32, and a second winding 33 wound around the second bobbin 31. Wherein the third magnetic core 32 is disposed on the bottom plate 10.

In some embodiments, referring to fig. 8, the second frame 31 includes a second peripheral wall 311 and a plurality of second protruding strips 312. The second peripheral wall 311 surrounds and forms a second accommodating space 313. The second protruding strips 312 are protruded from the second peripheral wall 311 and located in the second receiving space 313. The second peripheral wall 311 is opposite to the bottom plate 10 and spaced apart from the bottom plate to form a second gap 314, so that the conductive wires in the second winding 33 can pass through the second gap 314 and be wound around the second peripheral wall 311.

In some embodiments, referring to fig. 2, 3 and 8, the third magnetic core 32 includes a third leg 321. The third core leg 321 is accommodated in the second accommodating space 313 and connected to the first panel 222 of the first core 22. Wherein the plurality of second ribs 312 are located between the third stem 321 and the second peripheral wall 311. So, having guaranteed under the prerequisite of the sectional area of third magnetic core 32, magnetism integrated device 1 in some embodiments of this application with the help of the design of a plurality of second sand grips 312 has increased second skeleton 31 with space between the third magnetic core 32 is convenient when magnetism integrated device 1 encapsulating, still do magnetism integrated device 1 provides more encapsulating spaces, in order to improve magnetism integrated device 1's heat dispersion.

In the present embodiment, referring to fig. 1, the projections of the first magnetic core 22, the second magnetic core 23, and the two third magnetic cores 32 in the longitudinal direction (i.e., the X-axis direction) of the magnetic integrated device 1 overlap.

In the present embodiment, referring to fig. 8 and 9, the second frame 31 includes four second protruding strips 312 disposed at intervals. The second peripheral wall 311 includes a third edge 311a and a fourth edge 311b opposite to the third edge 311 a. Each of the four second protruding strips 312 extends from the third edge 311a toward the fourth edge 311 b.

It is understood that, in other embodiments, the number of the second protruding strips 312 may be increased or decreased according to actual requirements, and may be one, two, three, or five, and the like, which is not limited herein.

Further, in the present embodiment, referring to fig. 7, the second peripheral wall 311 has a rectangular longitudinal section, and includes a fifth side wall 3111, a sixth side wall 3112, a seventh side wall 3113, and an eighth side wall 3114. The fifth side wall 3111 and the sixth side wall 3112 are disposed opposite to each other, and the seventh side wall 3113 and the eighth side wall 3114 are disposed opposite to each other. The fifth sidewall 3111 and the sixth sidewall 3112 are respectively connected between the seventh sidewall 3113 and the eighth sidewall 3114 to form the second receiving space 313 together with the seventh sidewall 3113 and the eighth sidewall 3114. The fifth side wall 3111, the sixth side wall 3112, the seventh side wall 3113 and the eighth side wall 3114 are respectively provided with one second protruding strip 312.

In some embodiments, referring to fig. 7, the connection region between the fifth sidewall 3111 and the seventh sidewall 3113, the connection region between the sixth sidewall 3112 and the seventh sidewall 3113, the connection region between the fifth sidewall 3111 and the eighth sidewall 3114, and the connection region between the sixth sidewall 3112 and the eighth sidewall 3114 are all arc-shaped, so that not only the winding space of the second winding 33 is increased; the gap between the second framework 31 and the third magnetic core 32 is greatly increased, so that glue is conveniently filled in the magnetic integrated device 1, and more glue filling spaces are provided for the magnetic integrated device 1 to improve the heat dissipation performance of the magnetic integrated device 1.

It is understood that, in other embodiments, the shape of the longitudinal section of the second peripheral wall 311 may be adjusted adaptively according to actual needs, and may also be circular, and the like, which is not limited herein.

In some embodiments, at least one of the fifth sidewall 3111, the sixth sidewall 3112, the seventh sidewall 3113 and the eighth sidewall 3114 is provided with a plurality of second through holes 315. In this embodiment, a plurality of second through holes 315 are formed in each of the fifth side wall 3111, the sixth side wall 3112, the seventh side wall 3113, and the eighth side wall 3114. The second through hole 315 communicates with the second receiving space 313. The second through hole 315 is designed to assist the second winding 33 wound around the second peripheral wall 311 in heat dissipation, and to provide more glue filling space for the magnetic integrated device 1 to improve the overall heat dissipation performance of the magnetic integrated device 1.

In some embodiments, referring to fig. 8 and 9, the second frame 31 further includes a third connecting portion 316 and a fourth connecting portion 317 connecting the second peripheral wall 311. In the present embodiment, the third connecting portion 316 connects the third edge 311 a; the fourth connecting portion 317 is connected to the fourth edge 311b and is disposed opposite to the third connecting portion 316.

In this embodiment, referring to fig. 5, 8 and 9, the third connecting portion 316 includes a third connecting portion body 3161, a fifth engaging portion 3162, a sixth engaging portion 3163 and two third limiting portions 3164. The third connecting portion body 3161 is formed by extending the third edge 311a away from the second peripheral wall 311. A fifth notch 3161a is formed in a side of the third connecting portion body 3161 opposite to the bottom plate 10; a sixth notch 3161b is formed in one side of the third connecting portion 3161 facing the bottom plate 10. The fifth notch 3161a forms a fifth concave edge 3161c on the third connecting portion 3161; the sixth notch 3161b forms a sixth concave edge 3161d on the third connecting portion 3161. The fifth matching portion 3162 is formed by the fifth concave edge 3161c extending towards the first panel 222; the sixth fitting portion 3163 is formed by the sixth concave edge 3161d extending toward the first panel 222. The fifth matching portion 3162 and the sixth matching portion 3163 are oppositely arranged. The two third position-limiting portions 3164 are disposed on the surface of the sixth matching portion 3163 opposite to the fifth matching portion 3162.

Specifically, referring to fig. 5, 8 and 9, the sixth mating portion 3163 includes a third mating bottom plate 3163a opposite to the bottom plate 10, two oppositely disposed fifth and sixth mating side plates 3163b and 3163c, and fifth and sixth mounting plates 3163d and 3163e opposite to the bottom plate 10. The fifth coupling side plate 3163b is connected between the third coupling bottom plate 3163a and the fifth mounting plate 3163d, and the sixth coupling side plate 3163c is connected between the third coupling bottom plate 3163a and the sixth mounting plate 3163 e. The fifth mounting plate 3163d and the sixth mounting plate 3163e are respectively located at both sides of the sixth notch 3161 b. One of the third limiting portions 3164 is disposed on the surface of the fifth mounting plate 3163d facing the bottom plate 10, and the other third limiting portion 3164 is disposed on the surface of the sixth mounting plate 3163e facing the bottom plate 10. The two third limiting portions 3164 are used for cooperating with the base plate 10 to limit the position of the second framework 31 on the base plate 10. In addition, the two third limiting portions 3164 can also be used for limiting the second winding 33 and assisting the second winding 33 in the standard wiring.

It is understood that, in other embodiments, two third limiting portions 3164 may be respectively disposed on the fifth matching side plate 3163b and the sixth matching side plate 3163 c.

In some embodiments, referring to fig. 8 and 9, each of the third stoppers 3164 includes two third opposing stoppers 3164 a. The third stopper cylinder 3164a is not limited to a cylindrical structure with a hook, and is not limited herein.

It is understood that in other embodiments, the third retaining portion 3164 may include only one third retaining post 3164 a.

In other embodiments, at least one of the fifth matching portion 3162, the sixth matching portion 3163 and the third limiting portion 3164 in the third connecting portion 316 may be omitted as appropriate.

In the present embodiment, referring to fig. 8 and 9, the fifth notch 3161a is substantially U-shaped, and the sixth notch 3161b is substantially U-shaped. It is understood that, in other embodiments, the shapes of the fifth notch 3161a and the sixth notch 3161b may be adjusted according to actual requirements, and may also be in a regular shape such as a semi-circle or other irregular shapes.

In the present embodiment, referring to fig. 8 and 9, the fourth connecting portion 317 includes a fourth connecting portion body 3171, a seventh mating portion 3172, and an eighth mating portion 3173. The fourth connecting portion body 3171 is formed by extending the fourth edge 311b in a direction away from the second peripheral wall 311. The fourth connection part body 3171 and the third connection part body 3161 are opposite to each other. A seventh notch 3171a is formed in a side of the fourth connecting portion 3171 opposite to the bottom plate 10, and an eighth notch 3171b is formed in a side of the fourth connecting portion 3171 facing the bottom plate 10. The seventh notch 3171a forms a seventh concave edge 3171c on the fourth connection portion body 3171, and the eighth notch 3171b forms an eighth concave edge 3171d on the fourth connection portion body 3171. The seventh matching portion 3172 is formed by the seventh concave edge 3171c extending in a direction away from the third connecting portion 316; the eighth matching portion 3173 is formed by the eighth concave edge 3171d extending in a direction away from the third connecting portion 316. The seventh mating portion 3172 and the eighth mating portion 3173 are disposed opposite to each other. The eighth notch 3171b is communicated with the sixth notch 3161b, the fourth notch 2171b and the second notch 2161b, so that the magnetic integrated device 1 can be filled with glue and the first winding 24 and the second winding 33 can be wired conveniently.

Specifically, referring to fig. 8, the eighth coupling portion 3173 includes a coupling plate 3173a, first and second mounting blocks 3173b and 3173c respectively provided at both ends of the coupling plate 3173a, and first and second coupling plates 3173d and 3173 e. The first mounting block 3173b and the second mounting block 3173c are respectively located at two sides of the eighth gap 3171 b. The first mounting block 3173b is connected between the connector plate 3173a and the first mounting plate 2163 d. The second mounting block 3173c is connected between the connector plate 3173a and the second mounting plate 2163 e. The second framework 31 is fixed to the bottom plate 10 by means of the cooperation between the first mounting plate 2163d and the second mounting plate 2163 e.

In some embodiments, referring to fig. 1 to 3, the third magnetic core 32 further includes a third panel 322 and two oppositely disposed third side panels 323. The two third side plates 323 are respectively disposed on two sides of the third panel 322 to form a third receiving groove 324. The third stem 321 is disposed on the third panel 322 and located in the third receiving groove 324. The second peripheral wall 311 of the second frame 31 is sleeved on the third core column 321 and located between the third panel 322 and the first panel 222. The third magnetic core 32 is disposed on the bottom plate 10 through the two third side plates 323.

It can be understood that, referring to fig. 1, 2, 3, 8 and 9, when the third stem 321 of the third magnetic core 32 is inserted into the second receiving space 313 from the fourth edge 311b to the third edge 311a and contacts the first panel 222, the third panel 322, the two third side plates 323 and the first panel 222 together enclose a third receiving groove 324 for receiving the second peripheral wall 311. Meanwhile, the first panel 222 is also located between the fifth matching portion 3162 and the sixth matching portion 3163; the third panel 322 is located between the seventh mating portion 3172 and the eighth mating portion 3173.

In some embodiments, referring to fig. 1 to 3, a second air gap 34 is formed between each third side plate 323 and the first panel 222. Wherein the second air gap 34 is used for avoiding the magnetic saturation phenomenon of the magnetic integrated device 1 in operation.

In some embodiments, referring to fig. 1 to 3, a second insulating rubber sheet 35 is disposed in the second air gap 34 to ensure that each third side plate 323 and the first panel 222 are spaced apart from each other, so as to effectively prevent the magnetic integrated device 1 from being magnetically saturated during operation.

In some embodiments, referring to fig. 10 and 11, the base plate 10 includes a first surface 11 and a second surface 12 opposite to the first surface 11. The first surface 11 is provided with a groove 13. The groove 13 comprises a groove bottom surface 131 and two oppositely arranged first and second groove side surfaces 132, 133. The first groove side 132 connects the first surface 11 and the first groove bottom 131, and the second groove side 133 connects the first surface 11 and the second groove side 133. The first limiting portion 2164, the second limiting portion 2174 and the third limiting portion 3164 are accommodated in the recess 13, and cooperate with the first groove side 132 and the second groove side 133 to limit the positions of the first frame 21 and the second frame 31 on the bottom plate 10. In addition, the design of the groove 13 can also be used for assisting each winding to perform wiring and increasing the glue filling amount of the magnetic integrated device 1, so that the overall temperature of the magnetic integrated device 1 is reduced, and the magnetic integrated device 1 can reach the optimal function state during working.

In some embodiments, referring to fig. 10 and 11, the slot bottom 131 has a plurality of through holes 134. The plurality of through holes 134 are used to facilitate individual winding access. In the present embodiment, four through holes 134 are opened in the groove bottom surface 131.

It is understood that the number of the through holes 134 can be adjusted according to the requirement of the winding incoming and outgoing wires, and is not limited herein. The shape and designed position of the through hole 134 are arranged according to the specific wiring requirement of the winding, and are not limited herein.

In other embodiments, the through-hole 134 may be omitted.

In some embodiments, referring to fig. 10 and 11, a first installation groove 14 and a second installation groove 15 are formed on one side of the bottom plate 10. The first mounting groove 14 and the second mounting groove 15 are both formed by the first surface 11 being recessed toward the second surface 12. The first mounting groove 14 and the second mounting groove 15 are respectively located at both sides of the groove 13. In the present embodiment, the first mounting groove 14 includes a first mounting groove bottom surface 141. The first mounting groove bottom 141 is convexly provided with a first mounting column 142. The second mounting groove 15 includes a second mounting groove bottom surface 151. The second mounting groove bottom 151 is provided with a second mounting post 152 in a protruding manner. The first mounting column 142 is matched with the first matching plate 3173d in the second framework 31, and the second mounting column 152 is matched with the second matching plate 3173e in the second framework 31, so as to fix the second framework 31 to the bottom plate 10.

Specifically, referring to fig. 10 and 11, the first mounting column 142 includes a first mounting column 1421 and a first hook 1422 disposed at an end of the first mounting column 1421. The second mounting post 152 includes a second mounting post 1521 and a second hook 1522 disposed at an end of the second mounting post 1521. The base plate 10 fixes the second framework 31 to the base plate 10 by snapping the first hook part 1422 and the second hook part 1522 to the corresponding first matching plate 3173d and second matching plate 3173 e.

In other embodiments, the first mounting groove 14, the second mounting groove 15, the first mounting post 142, the second mounting post 152, the first mating plate 3173d, and the second mating plate 3173e may be omitted. As such, the connection between the base plate 10 and the second skeleton 31 is not limited to being achieved by welding.

In a further embodiment, referring to fig. 8 and 9, the other side of the bottom plate 10 is also provided with the same first mounting groove 14, the same second mounting groove 15, the same first mounting post 142, and the same second mounting post 152, and therefore, the description is omitted here.

In some embodiments, referring to fig. 10, the second surface 12 defines a plurality of wire receiving grooves 16. The plurality of wire accommodating grooves 16 are used for accommodating lead wires in the windings and standardizing wiring of the windings. Wherein, the plurality of wire accommodating grooves 16 are communicated with the corresponding through holes 134.

In some embodiments, the specific shape, number, etc. of the wire accommodating grooves 16 can be adjusted according to actual needs, and is not limited herein. In the present embodiment, the second surface 12 defines four line-accommodating grooves 16 spaced from each other.

In the present embodiment, referring to fig. 4, 6, 8, 10, and 13, the first winding 24 includes a first winding coil 241 wound around the first peripheral wall 211, and a first lead 242 and a second lead 243 connecting the first winding coil 241. The second winding 33 includes a second winding coil 331 wound around the second peripheral wall 311 and a third lead 332 connected to the second winding coil 331. The first lead 242, the second lead 243 and the third lead 332 respectively pass through the corresponding through holes 134 of the bottom plate 10 and are accommodated in the corresponding wire accommodating grooves 16.

In some embodiments, referring to fig. 10 and 12, the cover plate 40 is disposed on the second surface 12 and covers the first lead 242, the second lead 243 and the third lead 332, so as to increase the safety performance of the magnetic integrated device 1 and effectively avoid damage to the windings when the magnetic integrated device 1 is mounted.

Further, referring to fig. 10, the magnetic integrated device 1 further includes a first connection terminal 51, a second connection terminal 52, and a third connection terminal 53. One end of the first connecting terminal 51 is connected to the first lead 242 accommodated in the corresponding wire accommodating groove 16; the other end of the first connection terminal 51 passes through the cover plate 40 and is exposed out of the cover plate 40. One end of the second connection terminal 52 is connected to the second lead 243 accommodated in the corresponding wire accommodating groove 16; the other end of the second connection terminal 52 passes through the cover plate 40 and is exposed out of the cover plate 40. One end of the third connection terminal 53 is connected to the third lead 332 accommodated in the corresponding wire accommodating groove 16; the other end of the third connection terminal 53 passes through the cover plate 40 and is exposed out of the cover plate 40. In the present embodiment, the cover plate 40 is provided with a plurality of perforations 41. In this way, the first connection terminal 51, the second connection terminal 52 and the third connection terminal 53 can pass through the corresponding through hole 41 and be exposed out of the cover plate 40 to serve as external connection terminals of the magnetic integrated device 1.

In the present embodiment, referring to fig. 10 and 12, a plurality of third mounting posts 42 are further protruded from the cover plate 40. Each of the third mounting posts 42 includes a third mounting cylinder 421 and a third hook 422. The third mounting cylinder 421 is convexly disposed on the surface of the cover plate 40 facing the bottom plate 10. The third hook 422 is disposed at an end of the third mounting post 42 away from the cover plate 40. The cover plate 40 is clamped to the corresponding bottom plate 10 and/or the eighth matching part 3173 by the third hook part 422, so that the cover plate 40 is fixed. It is understood that the number of the third mounting posts 42 can be adjusted according to actual requirements, and is not limited herein.

Of course, in other embodiments, the third mounting post 42 may be omitted. As such, the cover plate 40 is not limited to being fixed to the base plate 10 by welding.

In still other embodiments, the cover plate 40 may be omitted.

In some embodiments, referring to fig. 14, the magnetic integrated device 1 further includes a fixing portion 60. The fixing portion 60 is disposed around the peripheries of the first magnetic core 22, the second magnetic core 23, and the two third magnetic cores 32, and is configured to fix the magnetic integrated device 1 and protect the first magnetic core 22, the second magnetic core 23, and the two third magnetic cores 32. The fixing portion 60 is not limited to an insulating tape.

In some embodiments, referring to fig. 8, 9 and 10, the magnetically integrated device 1 further comprises a plurality of studs 70. The studs 70 are disposed on the first and second mounting blocks 3173b and 3173c of the eighth mating portion 3173 and/or the second surface 12 of the base plate 10. In this way, the magnetic integrated device 1 can be conveniently assembled, for example, to: automobile products and the like.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A magnetically integrated device comprising a base plate, wherein the magnetically integrated device further comprises:

the transformer is arranged on the bottom plate and comprises a first magnetic core, a second magnetic core, a first framework and a first winding, the first magnetic core comprises a first core column, the second magnetic core comprises a second core column, the first framework comprises a first peripheral wall and a plurality of first protruding strips, the first peripheral wall surrounds to form a first accommodating space, the first protruding strips are arranged on the first peripheral wall in a protruding mode and are located in the first accommodating space, the first core column and the second core column are accommodated in the first accommodating space, the first protruding strips are located between the first peripheral wall and the first core column and/or between the first peripheral wall and the second core column, and the first winding is arranged on the first peripheral wall in a winding mode; and

the two inductors are respectively positioned on two sides of the transformer and arranged on the bottom plate, each inductor comprises a third magnetic core, a second framework and a second winding, the third magnetic core comprises a third core column, the second framework comprises a second peripheral wall, the second peripheral wall surrounds to form a second accommodating space, the third core column is accommodated in the second accommodating space, and the second winding is wound on the second peripheral wall.

2. The magnetically integrated device of claim 1, wherein the vertical distance from each point on the outer surface of the first leg to the first perimeter wall is the same, and the vertical distance from each point on the outer surface of the second leg to the first perimeter wall is the same.

3. The magnetic integrated device according to claim 1, wherein the first peripheral wall includes a first sidewall, a second sidewall opposite to the first sidewall, a third sidewall, and a fourth sidewall opposite to the third sidewall, the first sidewall and the second sidewall are respectively connected between the third sidewall and the fourth sidewall to form the first receiving space together with the third sidewall and the fourth sidewall, the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall are respectively provided with one of the first protruding strips, at least one of the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall is provided with a plurality of first through holes, and the plurality of first through holes are communicated with the first receiving space.

4. The magnetically integrated device of claim 3, wherein the area of juncture between the first sidewall and the third sidewall, the area of juncture between the first sidewall and the fourth sidewall, the area of juncture between the second sidewall and the third sidewall, and the area of juncture between the second sidewall and the fourth sidewall are each arcuate.

5. The magnetically integrated device according to any of claims 1 to 4, wherein the first core further comprises a first panel and two oppositely disposed first side plates, the first side plates being disposed on two sides of the first panel respectively to form a first receiving slot together, the first core pin being disposed on the first panel and being located in the first receiving slot, the second core further comprises a second panel opposite to the first panel and two oppositely disposed second side plates, the second side plates being disposed on two sides of the second panel respectively to form a second receiving slot together, the second core pin being disposed on the second panel and being located in the second receiving slot together, the first frame being received in a space defined by the first receiving slot and the second receiving slot together, the first side plates being disposed corresponding to the second side plates one by one respectively, each first side plate and the corresponding second side plate are arranged at intervals to form a first air gap.

6. The magnetically integrated device of any of claims 1-4, wherein the bottom plate comprises a first surface, the transformer and the two inductors are disposed on the first surface, the first surface is formed with a recess, the recess comprises a recess bottom and two oppositely disposed first and second recess sides, the first recess side connects the first surface and the first recess bottom, the second recess side connects the first surface and the second recess side, and the recess bottom is formed with a plurality of through holes.

7. The magnetic integrated device according to claim 6, wherein the bottom plate further comprises a second surface opposite to the first surface, the second surface being provided with a plurality of wire receiving grooves, and the plurality of wire receiving grooves are communicated with the corresponding through holes.

8. The magnetic integrated device according to claim 7, wherein the first winding includes a first winding coil wound around the first peripheral wall and a first lead and a second lead connected to the first winding coil, the second winding includes a second winding coil wound around the second peripheral wall and a third lead connected to the second winding coil, and the first lead, the second lead and the third lead respectively pass through the corresponding through holes and are received in the corresponding wire receiving slots.

9. The magnetically integrated device of claim 6, wherein the first frame further comprises a first connection portion and a second connection portion respectively disposed at two ends of the first perimeter wall;

the first connecting part comprises a first connecting part body connected with the first peripheral wall, a first matching part and a second matching part connected with the first connecting part body, and two first limiting parts, the first matching part and the second matching part are oppositely arranged, and the two first limiting parts are arranged on the surface of the second matching part, which is back to the first matching part, and are accommodated in the groove;

the second connecting portion comprises a second connecting portion body connected with the first peripheral wall, a third matching portion and a fourth matching portion connected with the second connecting portion body, and two second limiting portions, the third matching portion and the fourth matching portion are arranged oppositely, and the two second limiting portions are arranged on the surface, back to the third matching portion, of the fourth matching portion and are contained in the grooves.

10. The magnetically integrated device of claim 7, further comprising a cover plate disposed on the second surface and covering the plurality of wire receiving slots.

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