CN212303321U

CN212303321U - Multi-center-pillar special-shaped magnetic core

Info

Publication number: CN212303321U
Application number: CN202022303296.8U
Authority: CN
Inventors: 陆利兵; 马芳; 马跃恒
Original assignee: Jiangsu Baidikai Magnetic Material Co ltd
Current assignee: Jiangsu Baidikai Magnetic Material Co ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-01-05
Anticipated expiration: 2030-10-16

Abstract

The utility model discloses a many center pillars dysmorphism magnetic core, including bottom plate, the cylindrical center pillar of perpendicular setting on the bottom plate and the side post of setting on the bottom plate, the center pillar has two at least, the side post includes that the symmetry sets up side post I on bottom plate length direction both ends and locates two side posts II between the center pillar, and every center pillar equals rather than the interval between the both sides side post that corresponds, side post I towards the side of center pillar and all be provided with the arc groove face on the both sides face of side post II, the arc groove face sets up and on the side post of same center pillar both sides rather than the center pillar axial lead that corresponds, its channel of relative arc groove face is on same periphery. When the magnetic core is used, a plurality of groups or single group of coils can be wound according to actual requirements, the occupied space is small, and the heat dissipation performance is good.

Description

Multi-center-pillar special-shaped magnetic core

Technical Field

The utility model relates to a magnetic core technical field, concretely relates to many center pillars dysmorphism magnetic core.

Background

Magnetic cores are sintered magnetic metal oxides composed of various iron oxide mixtures, and ferrite cores are commonly used in the prior art for coils and transformers for various electronic devices. For example, manganese zinc ferrite is a typical magnetic core material, has the characteristics of high magnetic permeability and high magnetic flux density, has the characteristic of low loss at a frequency lower than 1MHz, and is therefore commonly used in new energy automobile charging piles. The material and structure of the magnetic core are important factors affecting the performance of the magnetic core. Among the prior art, the magnetic core sets up single center pillar more, when needs the multiunit coil, needs to use the cooperation of multiunit magnetic core, and occupation space is big. In order to solve the above technical problem, in application No. 201810916586.4 (dual center post magnetic core), two center posts are provided on the same bottom plate, and the side posts on both sides are shared, so that two sets of coils can be assembled simultaneously, the overall volume of the transformer or the charging device can be reduced, and the use of magnetic materials can also be reduced. However, in the using process, if a plurality of groups of coils are not needed, the double-center-pillar magnetic core cannot be flexibly adjusted, and certain defects exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, provide a many center pillars dysmorphism magnetic core.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a many center pillars dysmorphism magnetic core, includes the bottom plate, sets up cylindrical center pillar on the bottom plate and sets up the side post on the bottom plate perpendicularly, the center pillar has two at least, the side post sets up side post I on bottom plate length direction both ends and locates two side posts II between the center pillar including the symmetry, and every center pillar equals rather than the interval between the both sides side posts that correspond, side post I towards the side of center pillar and all be provided with the arc groove face on the both sides face of side post II, the arc groove face sets up and on the side post of same center pillar both sides rather than the center pillar axial lead that corresponds, its channel of relative arc groove face is on same periphery.

Preferably, the bottom plate is symmetrically provided with a notch at both sides in the width direction of the center pillar, and the outer end part of the notch far away from the center pillar is connected with the notch of the arc groove surface on the side pillar at both sides.

In a specific embodiment, the notch is arranged in a fan shape, and the outer end part of the notch is connected to the notch position of the arc-shaped groove surface through an inclined straight line segment.

In a specific embodiment, the outer end of the gap is in arc or chamfer transition with the inclined straight line segment.

In a specific embodiment, the connecting point of the notch and the middle column is in arc transition or chamfer transition.

In a specific embodiment, the connecting part of the arc-shaped groove surface and the side column is in arc transition.

In one embodiment, the center pillar and the side pillars have the same height.

In a specific embodiment, the arc groove surface is located on a circumference with a radius 2-2.5 times of the radius of the center pillar.

In a specific embodiment, the shortest distance between the two side pillars of the center pillar is 2.2 times of the height of the side pillar.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model discloses a many center pillars dysmorphism magnetic core, it adopts a plurality of center pillars and is located the center pillar both sides and sets up the side post respectively, can be in the use, according to actual need, organize or the multiunit coil around establishing, when needing a plurality of coils, can link to each other the coil of plug and being located the bottom plate both sides, when only needing single coil, can link to each other the coil of plug and certain center pillar both sides, thereby accomplished nimble application, the problem that occupation space that the magnetic core that has both solved among the prior art and adopted a plurality of single center pillars caused is big, also can the exclusive use.

Drawings

Fig. 1 is a front view of a multi-center-pillar special-shaped magnetic core according to the utility model;

FIG. 2 is a top view of FIG. 1;

wherein: 1. a base plate; 2. a center pillar; 3. a side column I; 4. a side column II; 5. an arc-shaped groove surface; 6. opening the gap; 7. and (4) oblique straight line segments.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

The utility model provides a many center pillars dysmorphism magnetic core, includes bottom plate 1, sets up cylindrical center pillar 2 on bottom plate 1 and sets up the side post on bottom plate 1 perpendicularly, center pillar 2 has two at least, the side post is including the symmetry set up side post I3 on bottom plate 1 length direction both ends and locate two center pillars 2 within a definite time side post II 4, refer to fig. 1, 2 and show, every center pillar 2 is equal with the interval between the both sides side post that corresponds, side post I3 towards center pillar 2 a side and all be provided with arc grooved surface 5 on the both sides face of side post II 4, arc grooved surface 5 sets up and on the side post of same center pillar 2 both sides, relative arc grooved surface 5 its channel is on same periphery rather than the center pillar 2 axial lead setting of center pillar that corresponds.

In this example, the bottom plate 1 is symmetrically provided with a gap 6 on both sides in the width direction of the center pillar 2, and the outer end part of the gap 6 far from the center pillar 2 is connected with the notch positions of the arc-shaped groove surfaces 5 on the side pillars on both sides. Specifically, the notch 6 is arranged in a fan shape, and the outer end of the notch 6 is connected to the notch position of the arc-shaped groove surface 5 through an inclined straight line segment 7. Here, the outer end of the gap 6 is in arc or chamfer transition with the inclined straight line section 7, and the connecting point of the gap 6 and the center pillar 2 is in arc or chamfer transition. Meanwhile, in this example, the connection between the arc groove surface 5 and the side pillar is in arc transition (not labeled in the figure). And the arc or chamfer transition is adopted, so that the coil cannot be abraded in the winding process.

The magnetic core structure has been optimized in the benefit that sets up opening 6, effectively reduces the installation area, occupies less PCB installation space, and the coiling wiring of being convenient for is fixed with the installation. And the outer end part of the notch 6 is connected to the notch position of the arc-shaped groove surface 5 through an inclined straight line segment 7, and the size and the surface area of the magnetic core are optimized by the arrangement mode, so that a smaller magnetic core can provide larger inductance and larger winding area.

In this example, the center pillar 2 and the side pillars have the same height.

In this example, the arc groove surface 5 is located at a circumferential radius 2-2.5 times the radius of the center pillar 2. In this example, the shortest distance between the two side pillars of the center pillar 2 is 2.2 times the height of the side pillar. Through the arrangement mode, when a plurality of groups of coils are sleeved or wound, interference between adjacent coils can not occur, and meanwhile, the heat dissipation area of the magnetic core can be improved to the maximum extent. In this example, the center pillar 2 has three, adopts this technical scheme, when being applied to new energy automobile and fills electric pile, every magnetic core can assemble three group's coils simultaneously, reduces transformer or battery charging outfit's whole volume, reduces magnetic material's use, can assemble the coil in the both sides of one or two center pillars 2 as required simultaneously, can adjust the coil quantity according to actual conditions is nimble.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a many center pillars dysmorphism magnetic core, includes the bottom plate, sets up the cylindrical center pillar on the bottom plate perpendicularly and sets up the side post on the bottom plate, its characterized in that, the center pillar has two at least, the side post includes that the symmetry sets up side post I on bottom plate length direction both ends and locates two side posts II between the center pillar, and every center pillar is equal rather than the interval between the both sides side posts that correspond, side post I towards the side of center pillar and all be provided with the arc groove face on the both sides face of side post II, the arc groove face sets up and on the side post of same center pillar both sides rather than the center pillar axial lead that corresponds, its channel of relative arc groove face is on same periphery.

2. The multi-center-pillar shaped magnetic core according to claim 1, wherein the bottom plate is symmetrically provided with a notch at both sides in the width direction of the center pillar, and the outer end part of the notch, which is far away from the center pillar, is connected with the notch position of the arc-shaped groove surface on the side pillars at both sides.

3. The multi-center-pillar shaped magnetic core according to claim 2, wherein the notch is provided in a fan shape, and the outer end of the notch is connected to the notch position of the arc-shaped groove surface through an oblique straight line segment.

4. The multi-leg shaped magnetic core according to claim 3, wherein the outer end of the gap is in arc or chamfer transition with the inclined straight line segment.

5. The multi-leg shaped magnetic core according to claim 2, wherein the connection point of the gap and the leg is rounded or chamfered.

6. The multi-leg shaped magnetic core according to claim 1, wherein the connection of the arc-shaped groove surface and the leg is in arc transition.

7. The multi-center-post shaped magnetic core according to claim 1, wherein the center posts and the side posts are equal in height.

8. The multi-centered pillar shaped core according to claim 1, wherein the arc-shaped groove surface has a circumferential radius 2 to 2.5 times a radius of the centered pillar.

9. The multi-center-post shaped magnetic core according to claim 1, wherein the shortest distance between the two side posts of the center post is 2.2 times the height of the side post.