CN212724952U - High-power magnetic core with heat conduction structure - Google Patents
High-power magnetic core with heat conduction structure Download PDFInfo
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- CN212724952U CN212724952U CN202021821566.8U CN202021821566U CN212724952U CN 212724952 U CN212724952 U CN 212724952U CN 202021821566 U CN202021821566 U CN 202021821566U CN 212724952 U CN212724952 U CN 212724952U
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Abstract
The utility model relates to a high-power magnetic core with a heat conduction structure, which at least comprises a magnetic core body and a heat conduction piece, wherein the magnetic core body comprises a bottom plate, two side plates respectively arranged at the left end and the right end of the bottom plate, and a middle column which is positioned between the two side plates and is connected with the bottom plate; the heat conducting piece penetrates through the middle column in the vertical direction, and the lower end of the heat conducting piece penetrates out of the bottom plate; the heat dissipation plate is attached to the bottom surface of the bottom plate through heat conducting glue and connected with the lower end of the heat conducting piece. The embodiment of the utility model provides a through the cooperation of heat-conducting piece and heating panel, when transformer work and make the center pillar temperature of magnetic core rise, the heat of center pillar can be absorbed to the heat dissipation board on with heat transfer to the bottom plate to make the magnetic core obtain good radiating effect.
Description
Technical Field
The utility model belongs to the technical field of magnetic element, especially, relate to a high-power magnetic core with heat conduction structure.
Background
The magnetic core of the transformer is a carrier for electric energy conversion of the switching power supply, and with the increase of the power of the switching power supply, the energy transmitted by a single transformer needs to reach the power level of tens of kilowatts to tens of kilowatts, and a magnetic core with larger volume is needed. The large-volume magnetic core is not easy to dissipate heat, and the thermal conductivity of the common ferrite magnetic core is 3.5-7W/(m.K) because the thermal conductivity of the magnetic core is low. The heat that needs the effluvium increases behind the increase of magnetic core volume, and the heat conductivity of magnetic core is low, then temperature gradient increase, and this can lead to the local temperature rise of magnetic core too high, and the bulk utilization of magnetic core is on the low side. Especially, the heat of center pillar, the center pillar is wrapped up by the coil and heat radiating area is little, and the heat need be conducted the magnetic core top cap through the center pillar and is dispersed again, and after the center pillar extension of magnetic core of transformer, the heat dissipation is more difficult.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve not enough among the prior art to a certain extent at least, provide a high-power magnetic core with heat conduction structure.
In order to achieve the above object, an embodiment of the present invention provides a high power magnetic core with a heat conducting structure, which at least includes a magnetic core body and a heat conducting member, wherein the magnetic core body includes a bottom plate, two side plates respectively disposed at left and right ends of the bottom plate, and a center pillar located between the two side plates and connected to the bottom plate; the heat conducting piece penetrates through the middle column in the vertical direction, and the lower end of the heat conducting piece penetrates out of the bottom plate.
In one embodiment, the center of the center pillar is provided with a through hole penetrating to the bottom plate along the vertical direction; the heat conducting piece is arranged in the through hole, and heat conducting glue is arranged between the heat conducting piece and the inner wall of the through hole.
In one embodiment, the through hole is a circular hole, an oval hole, a special-shaped hole or a polygonal hole, and the heat conducting member is a heat conducting column matched with the cross section of the through hole.
In one embodiment, the heat conducting member is made of copper, copper alloy, aluminum or aluminum alloy material.
In one embodiment, the front side and the rear side of the outer peripheral surface of the center pillar are respectively provided with a groove extending along the vertical direction, the lower end of the groove extends to penetrate through the bottom plate, and each groove is internally provided with the heat conducting piece through heat conducting glue.
In one embodiment, the bottom surface of the bottom plate is provided with a first heat dissipation plate and a second heat dissipation plate side by side along the front-back direction, and the first heat dissipation plate and the second heat dissipation plate are respectively connected with the heat conducting pieces in the corresponding grooves or integrally formed.
In one embodiment, the first heat dissipation plate and the second heat dissipation plate are made of copper, copper alloy, aluminum or aluminum alloy materials.
In one embodiment, the two side plates are respectively recessed relative to the inner side surface of the center pillar to form arc-shaped surfaces.
From the foregoing the embodiment of the utility model provides a can know, the embodiment of the utility model provides a through the cooperation of heat-conducting piece and heating panel, when transformer work and make the center pillar temperature of magnetic core rise, the heat of center pillar can be absorbed to the heating panel on with heat transfer to the bottom plate to make the magnetic core obtain good radiating effect.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a structural diagram of a first embodiment of the high-power magnetic core with a heat conducting structure according to the present invention;
FIG. 2 is a block diagram of another perspective of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a structural diagram of a second embodiment of the high power magnetic core with a heat conducting structure according to the present invention;
fig. 5 is a structural view of the projection 4 from another view angle.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 5, the present invention provides a high power magnetic core with a heat conducting structure, which includes a magnetic core body 10, heat conducting members 20 and 40, and a heat dissipating plate 30.
The magnetic core body 10 comprises a bottom plate 11, two side plates 12 respectively arranged at the left end and the right end of the bottom plate 11, and a middle column 13 positioned between the two side plates 12 and connected with the bottom plate 11; the two side plates 12 are recessed relative to the inner side of the center pillar 13 to form arc surfaces 121.
The heat conducting pieces 20 and 40 penetrate through the middle column 13 along the vertical direction, and the lower ends of the heat conducting pieces penetrate through the bottom plate 11; the heat dissipation plate 30 is attached to the bottom surface of the base plate 11 by a heat conductive adhesive and is connected to the lower ends of the heat conductive members 20 and 40.
So, when transformer work and when making the center pillar temperature rise of magnetic core, the heat of center pillar can be absorbed to the heat dissipation board on the bottom plate with heat transfer to the heat conduction spare, thereby make the magnetic core obtain good radiating effect, improved the life of magnetic core greatly.
Example one
Referring to fig. 1 to 3, in the high power magnetic core with a heat conducting structure provided in this embodiment, a through hole 131 penetrating through to the bottom plate 11 is formed in the center of the center pillar 13 of the magnetic core body 10 along the vertical direction; the heat conducting member 20 is disposed in the through hole 131 through the heat conducting glue, so that the heat conducting glue with high heat conductivity is filled between the heat conducting member 20 and the inner wall of the through hole 131, and the lower end of the heat conducting member 20 is abutted to the heat dissipating plate 30 adhered to the bottom surface of the bottom plate 11.
Like this, when transformer work and make the center pillar 13 temperature of magnetic core rise, the heat of center pillar 13 assembles to the heat-conducting member 20 at center through heat-conducting glue, then by heat-conducting member 20 with heat transfer to the heating panel 30 on the bottom plate 11 to make the magnetic core obtain good radiating effect, improved the life of magnetic core greatly. The heat dissipation plate 30 is not necessarily provided in this embodiment, and in other embodiments, the heat of the heat conduction member 20 may be conducted out in other forms.
According to the high power magnetic core of the present embodiment, the specific shape and size of the through hole 131 are not particularly limited as long as the heat conducting member 20 with a suitable size can be accommodated and the heat conducting member 20 can effectively absorb the heat of the center pillar 13, for example, a circular hole, an oval hole, a special-shaped hole, a polygonal hole, or the like can be adopted, and those skilled in the art can select the shape and size according to practical situations. In this embodiment, the through hole 131 is a circular hole, and the heat-conducting member 20 is a circular heat-conducting pillar which is in clearance fit with the cross section of the circular hole. In addition, in order to increase the contact area between the heat conducting member 20 and the heat dissipating plate 30, the lower end of the through hole 131 may be gradually expanded to form a horn-shaped structure, and the lower end of the heat conducting member 20 is adapted to the horn-shaped structure of the through hole 131, so that the heat conducting effect of the heat conducting member 20 is better.
The materials of the heat conducting member 20 and the heat dissipating plate 30 of the high power magnetic core according to the embodiment are not particularly limited as long as the heat conducting member 20 can effectively absorb the heat from the center pillar 13 and transfer the heat to the heat dissipating plate 30, and for example, the materials of the heat conducting member 20 and the heat dissipating plate 30 can be made of metal materials with a thermal conductivity greater than 100W/m · K, and can be selected by those skilled in the art according to practical situations. In this embodiment, the heat conducting member 20 is made of copper or copper alloy material, and the heat dissipating plate 30 is made of aluminum or aluminum alloy material, because the copper or copper alloy material has good heat conducting effect, and the aluminum or aluminum alloy material has good heat dissipating effect, the heat of the center pillar 13 can be effectively taken out through the cooperation of the heat conducting member 20 and the heat dissipating plate 30, and the temperature of the magnetic core can be effectively reduced.
Example two
Referring to fig. 4 and 5, in the high power magnetic core with a heat conducting structure according to the present embodiment, the grooves 132 extending in the vertical direction are respectively formed on the front side and the rear side of the outer peripheral surface of the center pillar 13, the lower ends of the grooves 132 extend to penetrate through the bottom plate 11, and a heat conducting member 40 is disposed in each groove 132 through a heat conducting adhesive. In this embodiment, the heat conducting member 40 is a heat conducting plate with a width matching with the width of the groove 132, and the lower end of the heat conducting member is abutted against the heat dissipating plate 30 adhered to the bottom surface of the bottom plate 11, so that the heat conducting member 40 transfers heat to the heat dissipating plate 30; of course, in other embodiments, the heat conducting member 40 may be directly fixed to the heat dissipating plate 30 by welding.
So, when transformer work and make the center pillar 13 temperature of magnetic core rise, the heat of center pillar 13 shifts through the heat-conducting piece 40 in two front and back both sides recesses 132 respectively, then by two heat-conducting pieces 40 with heat transfer to the heating panel 30 on the bottom plate 11, rethread heating panel 30 takes away the heat to make the magnetic core obtain good radiating effect, improved the life of magnetic core greatly.
Preferably, the heat dissipating plate 30 includes a first heat dissipating plate 31 and a second heat dissipating plate 32 arranged side by side in the front-rear direction, the first heat dissipating plate 31 is connected to and integrally formed with the heat conductive member 40 in the front side groove 132 of the center pillar 13, and the second heat dissipating plate 32 is connected to and integrally formed with the heat conductive member 40 in the rear side groove 132 of the center pillar 13. Therefore, the heat conducting member 40 and the heat dissipation plate 30 can be more conveniently mounted, and the heat transfer efficiency of the heat conducting member 40 to the heat dissipation plate direction is greatly improved. Of course, in other embodiments, the first heat dissipation plate 31 and the second heat dissipation plate 32 and the heat conduction member 40 may be of a split structure.
The materials used for the high power magnetic core, the heat conducting member 40 and the heat dissipating plate 30 according to the present embodiment are particularly limited as long as the materials can effectively absorb the heat of the center pillar 13 and dissipate the heat into the air, and for example, the materials are made of metal materials with a thermal conductivity greater than 100W/m · K, and those skilled in the art can select the materials according to the actual situation. Because heat-conducting member 40 and heating panel 30 adopt integrated into one piece structure, in this embodiment, heat-conducting member 40 and heating panel 30 all adopt copper or copper alloy material to make, because copper or copper alloy material have good heat conduction effect and radiating effect simultaneously to can be effectual take away the heat of center pillar 13, effectively reduce the temperature of magnetic core.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
Above is the description to the technical scheme that the utility model provides, to technical personnel in the field, according to the utility model discloses the thought of embodiment all has the change part on concrete implementation and range of application, to sum up, this description content should not be understood as the restriction of the utility model.
Claims (8)
1. A high-power magnetic core with a heat conduction structure is characterized by at least comprising a magnetic core body and a heat conduction piece, wherein the magnetic core body comprises a bottom plate, two side plates respectively arranged at the left end and the right end of the bottom plate, and a middle column which is positioned between the two side plates and connected with the bottom plate; the heat conducting piece penetrates through the middle column in the vertical direction, and the lower end of the heat conducting piece penetrates out of the bottom plate.
2. The high-power magnetic core with the heat conducting structure as claimed in claim 1, wherein the center of the center pillar is opened with a through hole penetrating to the bottom plate along a vertical direction; the heat conducting piece is arranged in the through hole, and heat conducting glue is arranged between the heat conducting piece and the inner wall of the through hole.
3. The high power magnetic core with heat conducting structure according to claim 2, wherein the through hole is a circular hole, an oval hole, a special-shaped hole or a polygonal hole, and the heat conducting member is a heat conducting pillar adapted to the cross section of the through hole.
4. The high power magnetic core with heat conducting structure according to claim 2 or 3, wherein the heat conducting member is made of copper, copper alloy, aluminum or aluminum alloy material.
5. The high power magnetic core with heat conducting structure as claimed in claim 1, wherein the central pillar has vertically extending grooves on the front and rear sides of the outer peripheral surface, the lower ends of the grooves extend through the bottom plate, and each of the grooves has a heat conducting member disposed therein via a heat conducting adhesive.
6. The high power magnetic core with heat conducting structure as claimed in claim 5, wherein the bottom of the base plate is provided with a first heat dissipating plate and a second heat dissipating plate side by side along the front-rear direction, and the first heat dissipating plate and the second heat dissipating plate are respectively connected to or integrally formed with the heat conducting member corresponding to the recess.
7. The high power magnetic core with heat conducting structure as claimed in claim 6, wherein the first heat dissipating plate and the second heat dissipating plate are made of copper, copper alloy, aluminum or aluminum alloy.
8. The high power magnetic core with heat conducting structure as claimed in claim 1, wherein the two side plates are recessed with respect to the inner side of the center pillar to form arc surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021821566.8U CN212724952U (en) | 2020-08-26 | 2020-08-26 | High-power magnetic core with heat conduction structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021821566.8U CN212724952U (en) | 2020-08-26 | 2020-08-26 | High-power magnetic core with heat conduction structure |
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| CN212724952U true CN212724952U (en) | 2021-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117153532A (en) * | 2023-10-19 | 2023-12-01 | 庐江和润科技有限公司 | Inductor for photovoltaic inverter |
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2020
- 2020-08-26 CN CN202021821566.8U patent/CN212724952U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117153532A (en) * | 2023-10-19 | 2023-12-01 | 庐江和润科技有限公司 | Inductor for photovoltaic inverter |
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