CN214476864U - Electric reactor - Google Patents

Abstract

A reactor comprises a support, three groups of windings, a first radiating fin, a second radiating fin and an iron core. The iron core is arranged in the support and comprises a first iron yoke, a second iron yoke, a first iron core column, a second iron core column and a third iron core column, wherein the second iron yoke is opposite to the first iron yoke, and the second iron core column and the third iron core column are opposite to the first iron core column. The first core limb, the second core limb and the third core limb are respectively arranged in the first radiating fin and the second radiating fin in a penetrating mode and connected between the first iron yoke and the second iron yoke. The second core limb is located between the first core limb and the third core limb. And the three groups of windings are respectively wound on the first iron core column, the second iron core column and the third iron core column. The first cooling fin is arranged on the first iron yoke and is positioned between the first iron yoke and the three groups of windings. The second cooling fin is arranged on the second iron yoke and is positioned between the second iron yoke and the three groups of windings.

Description

Electric reactor

Technical Field

The application relates to the technical field of power electronics, in particular to a reactor.

Background

The existing reactor is generally formed by placing a magnetic core and a wound coil into a shell, and then encapsulating and curing heat-conducting silica gel in the shell. Wherein, heat conduction silica gel plays the effect of heat dissipation and electrical insulation at the reactor. However, the existing reactor has some problems in the use process: (1) in actual use, the heat conducting silica gel has poor heat conducting property, so that heat generated by the reactor in working cannot be led out in time, and the running performance and the service life of the reactor are seriously influenced; (2) the heat that the reactor produced in the work can make the heat conduction silica gel of embedment receive thermal expansion, consequently the height of casing still need be higher than the height of heat conduction silica gel in the design, so not only increased the whole volume and the weight of reactor, still increased the manufacturing cost of reactor simultaneously.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a reactor to solve the above problems.

A reactor comprises a support, three groups of windings, a first cooling fin, a second cooling fin and an iron core, wherein the iron core is arranged in the support and comprises a first iron yoke, a second iron yoke arranged opposite to the first iron yoke, a first iron core column, a second iron core column arranged opposite to the first iron core column and a third iron core column arranged opposite to the second iron core column, the first iron core column, the second iron core column and the third iron core column respectively penetrate through the first cooling fin and the second cooling fin and are connected between the first iron yoke and the second iron yoke, the second iron core column is positioned between the first iron core column and the third iron core column, the three groups of windings are respectively wound on the first iron core column, the second iron core column and the third iron core column, and the first cooling fin is arranged on the first iron yoke, and the second cooling fins are arranged between the second iron yoke and the three groups of windings.

In some embodiments, the core further includes a first partition plate and a second partition plate, the first partition plate and the second partition plate respectively penetrate through the first heat dissipation fin and the second heat dissipation fin and are connected between the first yoke and the second yoke, the first partition plate is located between the first core limb and the second core limb, and the second partition plate is located between the second core limb and the third core limb.

In some embodiments, the first partition plate is located between a winding wound around the first core limb and a winding wound around the second core limb, and is spaced apart from the winding wound around the first core limb and the winding wound around the second core limb, and the second partition plate is located between the winding wound around the second core limb and a winding wound around the third core limb, and is spaced apart from the winding wound around the second core limb and the winding wound around the third core limb.

In some embodiments, the bracket includes a first plate, a second plate disposed opposite to the first plate, and a plurality of connecting posts connected between the first plate and the second plate, and the iron core is disposed between the first plate and the second plate.

In some embodiments, the first plate body includes a first surface facing the second plate body and a second surface facing away from the second plate body, the first surface is provided with a first slot engaged with the first yoke, the second plate body includes a third surface facing away from the first surface and a fourth surface facing the first surface, the fourth surface is provided with a second slot engaged with the second yoke, a portion of the first yoke is engaged with the first slot, and a portion of the second yoke is engaged with the second slot.

In some embodiments, each of the connecting posts is movably connected to the first panel and the second panel.

In some embodiments, the bracket further includes a plurality of fixing portions, one end of each of the connecting posts penetrates through the first plate and is exposed out of the first plate, the other end of each of the connecting posts penetrates through the second plate and is exposed out of the second plate, and the two fixing portions are respectively connected to the two corresponding connecting posts, which are exposed out of the first plate and exposed out of the two ends of the second plate.

In some embodiments, the first heat sink has three first through holes formed therein, the first through holes being matched with the first core limb, the second core limb and the third core limb, the second heat sink has two second through holes being matched with the first core limb, the second core limb and the third core limb, and the first core limb, the second core limb and the third core limb are respectively inserted into the corresponding first through hole in the first heat sink and the corresponding second through hole in the second heat sink to connect between the first yoke and the second yoke.

In some embodiments, each of the windings includes a coil, and a first lead and a second lead connected to the coil, where the coil is wound around the corresponding first core limb, or the corresponding second core limb, or the corresponding third core limb, and the reactor further includes a plurality of connection terminals, where the connection terminals connect the corresponding first lead and the corresponding second lead.

In some embodiments, the reactor further includes a plurality of separation bars disposed on the three sets of windings, each separation bar includes a plate body and a plurality of partition plates protruding on the plate body, the plurality of partition plates are disposed at intervals to form accommodating slots, and the wires in the coil of each winding are inserted into the accommodating slots in the corresponding separation bar one by one.

In this application the reactor will first fin set up in first yoke and three groups between the winding, and will the second fin set up in second yoke and three groups design between the winding makes the reactor itself is from taking the wind channel, so can with the heat that the reactor work produced in time effluvium. In addition, compare in current reactor and utilize radiating scheme of heat conduction silica gel, in this application the reactor utilizes first fin with the radiating mode of second fin has avoided heat conduction silica gel's use, so greatly reduced the volume and the weight of reactor to the cost of manufacture of reactor has been reduced simultaneously.

Drawings

Fig. 1 is a schematic configuration diagram of a reactor according to an embodiment of the present application.

Fig. 2 is a schematic view of a part of the structure of the reactor shown in fig. 1.

Fig. 3 is an exploded view of a portion of the reactor shown in fig. 2.

Fig. 4 is a schematic structural view of the stent shown in fig. 1.

Fig. 5 is a schematic structural diagram of the stent shown in fig. 1 under another view angle.

Fig. 6 is a schematic cross-sectional view taken along the line vi-vi shown in fig. 2.

Fig. 7 is a schematic structural view of an iron core according to another embodiment of the present application.

Fig. 8 is a partially exploded view of the windings, terminals and separator bars of fig. 3.

Description of the main elements

Reactor 1

Support 10

First plate 101

First surface 1011

Second surface 1012

First card slot 1013

First mounting groove 1014

Second plate 102

Third surface 1021

Fourth surface 1022

Second card slot 1023

Second mounting groove 1024

Connecting column 103

Fixed part 104

Mounting hole 105

Iron core 20

First yoke 201

Second iron yoke 202

First core limb 203

Second core limb 204

Third core limb 205

First partition 206

Second partition 207

Winding 30

Coil 301

First lead 302

Second lead 303

First heat sink 40

The first through hole 401

Third through-hole 402

Second heat sink 50

Second through hole 501

Fourth through hole 502

Terminal block 60

Parting strip 70

Plate body 701

Baffle 702

Holding tank 703

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 reactor 1. Referring to fig. 2 and 3 together, the reactor 1 includes a support 10, a core 20, three sets of windings 30, a first heat sink 40, and a second heat sink 50. The iron core 20 is disposed in the bracket 10. The core 20 includes a first yoke 201, a second yoke 202 disposed opposite to the first yoke 201, a first core limb 203, a second core limb 204 disposed opposite to the first core limb 203, and a third core limb 205 disposed opposite to the second core limb 204. The first core limb 203, the second core limb 204 and the third core limb 205 are respectively inserted into the first heat dissipation fin 40 and the second heat dissipation fin 50 and connected between the first yoke 201 and the second yoke 202. The second core leg 204 is located between the first core leg 203 and the third core leg 205. The three sets of windings 30 are wound around the first core limb 203, the second core limb 204 and the third core limb 205, respectively. The first heat sink 40 is disposed on the first iron yoke 201 and located between the first iron yoke 201 and the three sets of windings 30. The second heat sink 50 is disposed on the second iron yoke 202 and located between the second iron yoke 202 and the three sets of windings 30.

Referring to fig. 1 to 3, in the reactor 1 according to some embodiments of the present application, the first heat sink 40 is disposed between the first iron yoke 201 and the three sets of windings 30, and the second heat sink 50 is disposed between the second iron yoke 202 and the three sets of windings 30, so that the reactor 1 itself has an air duct, and thus heat generated during operation of the reactor 1 can be dissipated in time. In addition, compare in current reactor and utilize the radiating scheme of heat conduction silica gel, in this application reactor 1 utilizes first fin 40 with the radiating mode of second fin 50 has avoided the use of heat conduction silica gel, so greatly reduced reactor 1's volume and weight to the cost of manufacture of reactor 1 has been reduced simultaneously.

In some embodiments, referring to fig. 1, 4 and 5, the bracket 10 includes a first plate 101, a second plate 102 disposed opposite to the first plate 101, and a plurality of connection posts 103 connected between the first plate 101 and the second plate 102. Wherein the iron core 20 is located between the first plate 101 and the second plate 102.

In the present embodiment, referring to fig. 4 and 5, the first plate 101 has a rectangular cross-sectional shape. The second plate 102 has a rectangular cross-sectional shape. In other embodiments, the cross-sectional shape of the first plate 101 may be adjusted according to actual requirements, and is not limited to a regular shape such as a circle or other irregular shapes. The cross-sectional shape of the second plate 102 can be adaptively adjusted according to actual requirements, and is not limited to regular shapes such as circles or other irregular shapes.

In some embodiments, referring to fig. 1, 2, 4, and 5, the first plate 101 includes a first surface 1011 facing the second plate 102 and a second surface 1012 facing away from the second plate 102. The first surface 1011 defines a first engaging groove 1013 for engaging with the first yoke 201. The second plate body 102 includes a third surface 1021 facing away from the first surface 1011 and a fourth surface 1022 facing the first surface 1011. The fourth surface 1022 defines a second slot 1023 for engaging with the second yoke 202. A portion of the first yoke 201 is engaged with the first slot 1013, and a portion of the second yoke 202 is engaged with the second slot 1023, so that the iron core 20 is fixed to the bracket 10.

In other embodiments, at least one of the first card slot 1013 and the second card slot 1023 may be omitted.

In the present embodiment, referring to fig. 4 and 5, the number of the connection columns 103 is six. In other embodiments, the number of the connecting columns 103 can be adjusted adaptively according to actual needs, and is not limited to four or eight.

In some embodiments, referring to fig. 1, 4 and 5, each connecting column 103 is movably connected to the first board 101 and the second board 102. In this way, the bracket 10 can adjust the distance between the first plate 101 and the second plate 102 by means of the connecting column 103 to accommodate iron cores 20 of different sizes and heights.

In some embodiments, referring to fig. 4 and 5, the stent 10 further comprises a plurality of fixation portions 104. One end of each connecting column 103 penetrates through the first plate 101 and is exposed out of the first plate 101; the other end of each connecting column 103 penetrates through the second plate 102 and is exposed out of the second plate 102. The two fixing portions 104 are respectively connected to two ends of the connecting column 103 exposed out of the first board 101 and two ends of the connecting column exposed out of the second board 102.

Specifically, referring to fig. 1, 2, 4 and 5, the second surface 1012 is formed with a first mounting groove 1014 engaged with the connecting post 103. The third surface 1021 is provided with a second mounting groove 1024 matched with the connecting column 103. The first mounting grooves 1014 on the second surface 1012 and the second mounting grooves 1024 on the third surface 1021 are arranged in a one-to-one correspondence. Thus, two end portions of each connecting post 103 respectively pass through the corresponding first board 101 and second board 102 and are respectively received in the corresponding first mounting groove 1014 and second mounting groove 1024. The two fixing portions 104 are respectively connected to two ends of the connecting post 103 received in the first mounting groove 1014 and the second mounting groove 1024. Thus, when the iron core 20 needs to be fixed, the fixing portions 104 on one end portions of the connecting posts 103 can be unscrewed, the iron core 20 is placed at the corresponding position of the first plate 101, the second plate 102 is placed on the iron core 20, meanwhile, the other end portions of the connecting posts 103 penetrate through the second plate 102 and are contained in the corresponding second mounting grooves 1024, and then the corresponding fixing portions 104 and the connecting posts 103 are connected, so that the iron core 20 can be fixed in the support 10.

In some embodiments, the securing portion 104 is not limited to being a nut.

In other embodiments, one end of each connecting column 103 is fixedly connected to the first board 101 or the second board 102. The fixing method is not limited to bonding or welding.

In some embodiments, referring to fig. 4 and 5, at least one of the first plate 101 and the second plate 102 has a plurality of mounting holes 105. The installation of the mounting hole 105 facilitates the assembly of the reactor 1.

In other embodiments, the mounting holes 105 may be omitted.

In some embodiments, referring to fig. 2 and 3, the first heat sink 40 defines three first through holes 401 for cooperating with the first core limb 203, the second core limb 204 and the third core limb 205. The second heat sink 50 is provided with a second through hole 501 that is matched with the first core limb 203, the second core limb 204, and the third core limb 205. In this way, the first core limb 203, the second core limb 204 and the third core limb 205 are respectively inserted into the corresponding first through hole 401 of the first heat sink 40 and the corresponding second through hole 501 of the second heat sink 50 to connect between the first yoke 201 and the second yoke 202.

In some embodiments, fig. 1-3, the core 20 further includes a first spacer 206 and a second spacer 207. The first spacer 206 and the second spacer 207 are respectively inserted into the first heat sink 40 and the second heat sink 50 and connected between the first yoke 201 and the second yoke 202. The first diaphragm 206 is located between the first leg 203 and the second leg 204, and the second diaphragm 207 is located between the second leg 204 and the third leg 205. However, the first partition plate 206 and the second partition plate 207 are provided so that the magnetic paths between the inductors are not disturbed, and the inductors are not easily saturated, so that the reactor 1 can withstand a larger current, because the windings 30 wound around the first core limb 203 and the windings 30 wound around the second core limb 204, and the windings 30 wound around the second core limb 204 and the windings 30 wound around the third core limb 205.

In some embodiments, the material of the first spacer 206 and the second spacer 207 is a high permeability amorphous alloy material.

In some embodiments, referring to fig. 6, the first separator 206 is located between the winding 30 wound on the first core leg 203 and the winding 30 wound on the second core leg 204, and is spaced apart from the winding 30 wound on the first core leg 203 and the winding 30 wound on the second core leg 204. The second partition 207 is located between the winding 30 wound around the second core limb 204 and the winding 30 wound around the third core limb 205, and is spaced apart from the winding 30 wound around the second core limb 204 and the winding 30 wound around the third core limb 205.

In other embodiments, one of the first barrier 206 and the second barrier 207 may be omitted.

In still other embodiments, both the first barrier 206 and the second barrier 207 may be omitted. Thus, referring to fig. 7, the first core limb 201, the third core limb 205, the second core limb 202 and the first core limb 203 are sequentially connected end to end, and the second core limb 204 is located between the first core limb 203 and the third core 20 and connected between the first core limb 201 and the second core limb 202 to form a "zigzag" shaped core 20.

In some embodiments, referring to fig. 1 to 3, the first heat sink 40 further defines two third through holes 402 that are matched with the first partition 206 and the second partition 207. The second heat sink 50 further defines two fourth through holes 502 that are engaged with the first spacer 206 and the second spacer 207. In this way, the first spacer 206 and the second spacer 207 are respectively inserted into the corresponding third through hole 402 of the first heat sink 40 and the corresponding fourth through hole 502 of the second heat sink 50 to connect between the first yoke 201 and the second yoke 202.

In some embodiments, referring to fig. 1, 3 and 7, each of the windings 30 includes a coil 301 and a first lead 302 and a second lead 303 connecting the coil 301. The coil 301 is wound around the corresponding first core limb 203, the second core limb 204, or the third core limb 205.

In some embodiments, referring to fig. 1 and 3, the reactor 1 further includes a plurality of connection terminals 60. The connection terminal 60 connects the corresponding first lead wire 302 and the second lead wire 303 to serve as an external connection terminal of the reactor 1.

In some embodiments, referring to fig. 3 and 8, the reactor 1 further includes a plurality of division bars 70 disposed on the three sets of windings 30. Each of the division bars 70 includes a plate body 701 and a plurality of partition plates 702 protruding from the plate body 701. A plurality of the partition plates 702 are disposed at intervals to form the receiving groove 703. The wires in the coil 301 of each winding 30 are inserted into the receiving slots 703 of the corresponding dividing bar 70.

In the present embodiment, four separating bars 70 are disposed on each winding 30. In other embodiments, the number of the separation bars 70 on each winding 30 can be adjusted adaptively according to actual requirements, and is not limited to two or three.

In other embodiments, the separator bar 70 may be omitted.

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 reactor, characterized by comprising:

the winding comprises a bracket, three groups of windings, a first radiating fin and a second radiating fin; and

an iron core disposed in the support, the iron core including a first iron yoke, a second iron yoke disposed opposite to the first iron yoke, a first iron core column, a second iron core column disposed opposite to the first iron core column, and a third iron core column disposed opposite to the second iron core column, the first iron core column, the second iron core column, and the third iron core column respectively penetrate the first heat sink and the second heat sink and are connected between the first iron yoke and the second iron yoke, the second iron core column is disposed between the first iron core column and the third iron core column, three groups of windings are respectively wound around the first iron core column, the second iron core column, and the third iron core column, the first heat sink is disposed on the first iron yoke and is disposed between the first iron yoke and the three groups of windings, the second heat sink is disposed on the second iron yoke, and is located between the second yoke and the three sets of windings.

2. The reactor according to claim 1, wherein the core further comprises a first spacer and a second spacer, the first spacer and the second spacer being respectively inserted into the first heat dissipation fin and the second heat dissipation fin and connected between the first yoke and the second yoke, the first spacer being located between the first core limb and the second core limb, and the second spacer being located between the second core limb and the third core limb.

3. The reactor according to claim 2, wherein the first separator is located between and spaced from the winding around the first core leg and the winding around the second core leg, and wherein the second separator is located between and spaced from the winding around the second core leg and the winding around the third core leg.

4. The reactor according to any one of claims 1 to 3, characterized in that the bracket includes a first plate, a second plate disposed opposite to the first plate, and a plurality of connection posts connected between the first plate and the second plate, and the core is located between the first plate and the second plate.

5. The reactor according to claim 4, wherein the first plate includes a first surface facing the second plate and a second surface facing away from the second plate, the first surface is provided with a first engaging groove for engaging with the first yoke, the second plate includes a third surface facing away from the first surface and a fourth surface facing the first surface, the fourth surface is provided with a second engaging groove for engaging with the second yoke, a portion of the first yoke is engaged with the first engaging groove, and a portion of the second yoke is engaged with the second engaging groove.

6. The reactor according to claim 4, characterized in that each of the connection posts is movably connected to the first board body and the second board body.

7. The reactor according to claim 4, wherein the bracket further comprises a plurality of fixing portions, one end portion of each of the connecting posts is inserted into the first plate and exposed from the first plate, the other end portion of each of the connecting posts is inserted into the second plate and exposed from the second plate, and the two fixing portions are respectively connected to two end portions of the corresponding connecting post exposed from the first plate and exposed from the second plate.

8. The reactor according to any one of claims 1 to 3, wherein the first heat sink has three first through holes for engaging with the first core limb, the second core limb, and the third core limb, the second heat sink has three second through holes for engaging with the first core limb, the second core limb, and the third core limb, and the first core limb, the second core limb, and the third core limb are respectively inserted into the corresponding first through holes in the first heat sink and the corresponding second through holes in the second heat sink to connect between the first yoke and the second yoke.

9. The reactor according to any one of claims 1 to 3, wherein each of the windings includes a coil and a first lead wire and a second lead wire connected to the coil, the coil being wound around the corresponding first leg, the second leg, or a third leg, and the reactor further includes a plurality of connection terminals connected to the corresponding first lead wire and the second lead wire.

10. The reactor according to claim 9, further comprising a plurality of division bars provided on three sets of the windings, each of the division bars including a plate body and a plurality of partitions provided protruding on the plate body, the partitions being arranged at intervals to form accommodating grooves, and wires in the coil of each of the windings being inserted through the accommodating grooves in the corresponding division bar one by one.

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