CN217134137U - High-frequency vehicle high-Q-value small-volume conduction (EMI) differential-mode inductor - Google Patents
High-frequency vehicle high-Q-value small-volume conduction (EMI) differential-mode inductor Download PDFInfo
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- CN217134137U CN217134137U CN202220626495.9U CN202220626495U CN217134137U CN 217134137 U CN217134137 U CN 217134137U CN 202220626495 U CN202220626495 U CN 202220626495U CN 217134137 U CN217134137 U CN 217134137U
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Abstract
The utility model discloses a high-frequency vehicle high-Q value small-volume conduction (EMI) differential mode inductor, which comprises a magnetic core, pins are symmetrically arranged at the bottom of the magnetic core, a coil is wound on the inner side of the magnetic core, two ends of the coil penetrate through the magnetic core and are connected with the pins together, the top end of the magnetic core is provided with a heat dissipation plate, heat dissipation silicone grease is smeared between the heat dissipation plate and the top end of the magnetic core, the heat conducting metal shell is arranged outside the arc surface of the magnetic core, the top end of the heat conducting metal shell is pressed on the heat dissipation plate, the utility model solves the problems that the heat dissipation effect of the differential mode inductor is poor and the differential mode inductor is easy to be damaged due to the poor heat dissipation effect of the differential mode inductor caused by the fact that the general heat dissipation component can not be arranged on the differential mode inductor because the structure of the existing I-shaped differential mode inductor is too small, by improving and optimizing the structure of the differential mode inductor, an auxiliary heat dissipation structure is arranged outside the differential mode inductor, the auxiliary heat dissipation structure can assist the differential mode inductor to quickly dissipate heat generated by the differential mode inductor during operation.
Description
Technical Field
The utility model relates to an inductance technical field specifically is a high frequency car high Q value little volume conduction (EMI) differential mode inductance.
Background
The differential mode inductor is an inductor with large inductance resistance to differential mode high-frequency interference, and is also called a differential mode choke coil, the differential mode inductor is widely applied to various electrical appliances, and the differential mode inductor can play a role only by using alternating current.
The existing differential mode inductors are various in style, the common differential mode inductor is an I-shaped differential mode inductor, the structure of the I-shaped differential mode inductor is small, and most of the I-shaped differential mode inductors are arranged on a PCB (printed circuit board).
However, the existing differential mode inductor has the following problems when in use: the conventional I-shaped differential mode inductor has a too small structure, so that a common heat dissipation assembly cannot be mounted on the differential mode inductor, the heat dissipation effect of the differential mode inductor is poor, and the differential mode inductor is easily damaged due to overheating.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high frequency car high Q value little volume conduction (EMI) differential mode inductance aims at improving the poor problem of differential mode inductance radiating effect.
The utility model discloses a realize like this:
the utility model provides a high frequency car high Q value little volume conduction (EMI) differential mode inductance, includes the magnetic core, and magnetic core bottom symmetry is equipped with the pin, and the inboard winding of magnetic core has the coil, and the coil both ends are passed the magnetic core and are linked together with the pin, and the magnetic core top is equipped with the heating panel, has paintd the heat dissipation silicone grease between heating panel and the magnetic core top, and the magnetic core arc surface outside is equipped with the heat conduction metal casing, and heat conduction metal casing top is pressed at the heating panel.
Through adopting above-mentioned technical scheme, the magnetic core is convenient for twine the coil to conveniently assemble the whole core component that poor mould electricity changed, the work that the poor mould inductance of also being convenient for can be normal, pin cooperation PCB board makes things convenient for poor mould inductance and PCB board to link together, and the heating panel cooperates the heat conduction metal casing, conveniently dispels the heat to whole poor mould inductance, avoids the overheated damage of poor mould inductance.
Optionally, the magnetic core is I-shaped, and bayonets are symmetrically arranged at the top end and the bottom end of the arc surface of the magnetic core.
Through adopting above-mentioned technical scheme, the magnetic core of I shape is convenient for produce the differential mode inductance of I shape, and the bayonet socket is convenient for cooperate the coil, makes things convenient for the coil to pass the magnetic core and links together with the pin, and the bayonet socket conveniently cooperates heat conduction metal casing simultaneously, makes things convenient for the normal use of heat conduction metal casing.
Optionally, a circle of blank pressing is arranged at the top end of the heat-conducting metal shell, and a plurality of pressing openings are formed in the bottom of the blank pressing.
Through adopting above-mentioned technical scheme, the blank pressing is convenient for push down the heating panel, makes things convenient for the heating panel to stabilize on the magnetic core top, makes things convenient for the laminating that the heating panel can be stable on the magnetic core, and the convenience is conducted heat to the differential mode inductance, and the presser foot that the heating panel was convenient for push down to the pressure opening makes things convenient for the normal use of heat conduction metal-back.
Optionally, a clamping rod is arranged at a position, aligned with the bayonet, on the inner side of the heat-conducting metal shell, and a clamping groove is formed in the bottom end of the clamping rod.
Through adopting above-mentioned technical scheme, kelly and draw-in groove are convenient for cooperate bayonet socket and coil, make things convenient for the kelly block on the bayonet socket, make things convenient for heat conduction metal casing block on the magnetic core, and the draw-in groove card makes things convenient for the stability of coil in the one end that the magnetic core was visited to the coil.
Optionally, the upper surface of the heat dissipation plate is uniformly provided with a plurality of heat dissipation fins, and the position of the heat dissipation plate, which is aligned with the pressure opening, is provided with a pressure foot.
Through adopting above-mentioned technical scheme, the fin is convenient for send out supplementary differential mode inductance and dispels the heat, and the heat that makes things convenient for the differential mode inductance to produce can quick discharge, and the presser foot is convenient for cooperate the pressure port, makes things convenient for heat conduction metal-back top to compress tightly on the fin, makes things convenient for the stable installation of heating panel on the differential mode inductance.
Optionally, the surfaces of the magnetic core and the heat-conducting metal shell are covered with a layer of epoxy resin, and a layer of paint is attached to the epoxy resin.
Through adopting above-mentioned technical scheme, epoxy and paint can be in the same place heating panel and heat conduction metal-back stable and magnetic core and coil link together, have good insulating effect at epoxy and paint simultaneously.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses: through improving and optimizing the structure of differential mode inductance for differential mode inductance outside is equipped with supplementary heat radiation structure, can assist differential mode inductance when the function with the quick effluvium of the heat that its produced through supplementary heat radiation structure, avoids differential mode inductance heat dissipation poor and the problem of overheated damage.
(2) The utility model discloses: through the structure to the heat conduction metal casing improve and optimize for the heat conduction metal casing can overlap in the difference mode inductance outside, and the heat conduction metal casing can effectually carry out effectual protection to the inside coil of difference mode inductance, avoids the difference mode inductance to damage easily.
(3) The utility model discloses: through the structure to the heating panel improvement and optimization for the heating panel can laminate at differential mode inductance top, can dispel the heat that the differential mode inductance produced fast through the cooperation of heating panel, can effectual supplementary differential mode inductance dispel the heat.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of the differential mode inductor of the present invention at a first viewing angle;
fig. 2 is a schematic structural diagram of the differential mode inductor of the present invention at a second viewing angle;
fig. 3 is a schematic diagram of the magnetic core structure of the present invention;
fig. 4 is a schematic structural view of the heat-conducting metal shell of the present invention at a first viewing angle;
fig. 5 is a schematic structural view of the heat-conducting metal shell of the present invention at a second viewing angle;
fig. 6 is a schematic diagram of the structure of the heat dissipation plate of the present invention;
in the figure: 1-a magnetic core; 11-bayonet; 12-a pin; 2-a coil; 3-a thermally conductive metal shell; 31-pressing edges; 32-pressing the opening; 33-a clamping rod; 34-a card slot; 4-a heat sink; 41-a heat sink; 42-presser foot.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example (b): referring to fig. 1, 2 and 3: a high-frequency vehicle high-Q value small-volume conduction (EMI) differential mode inductor comprises a magnetic core 1, pins 12 are symmetrically arranged at the bottom of the magnetic core 1, a coil 2 is wound on the inner side of the magnetic core 1, two ends of the coil 2 penetrate through the magnetic core 1 and are connected with the pins 12, a heat dissipation plate 4 is arranged at the top end of the magnetic core 1, heat dissipation silicone grease is smeared between the heat dissipation plate 4 and the top end of the magnetic core 1, a heat conduction metal shell 3 is arranged on the outer side of the arc surface of the magnetic core 1, and the top end of the heat conduction metal shell 3 is pressed on the heat dissipation plate 4; magnetic core 1 is convenient for winding coil 2 to conveniently assemble the whole core component that poor mould electricity changed, the work that the poor mould inductance of also being convenient for can be normal, pin 12 cooperation PCB board makes things convenient for poor mould inductance and PCB board to link together, and 4 cooperation heat conduction metal shells 3 of heating panel conveniently dispel the heat to whole poor mould inductance, avoid the overheated damage of poor mould inductance.
Referring to FIG. 3: the magnetic core 1 is I-shaped, and bayonets 11 are symmetrically arranged at the top end and the bottom end of the arc surface of the magnetic core 1; the I-shaped magnetic core 1 is convenient for producing I-shaped differential mode inductance, the bayonet 11 is convenient for matching the coil 2, the coil 2 conveniently penetrates through the magnetic core 1 to be connected with the pins 12, and meanwhile, the bayonet 11 is convenient for matching the heat-conducting metal shell 3, so that the heat-conducting metal shell 3 can be conveniently used normally.
Referring to fig. 4 and 5: the top end of the heat-conducting metal shell 3 is provided with a circle of blank holders 31, and the bottom of the blank holders 31 is provided with a plurality of blank holders 32; the pressing edge 31 is convenient for pressing the heat dissipation plate 4, the heat dissipation plate 4 is convenient to be stabilized at the top end of the magnetic core 1, the heat dissipation plate 4 can be conveniently and stably attached to the magnetic core 1, heat conduction on differential mode inductance is convenient, the pressing edge 32 is convenient for pressing the pressing foot 42 of the heat dissipation plate 4, and normal use of the heat conduction metal shell 3 is convenient; a clamping rod 33 is arranged at the position, aligned with the bayonet 11, on the inner side of the heat-conducting metal shell 3, and a clamping groove 34 is arranged at the bottom end of the clamping rod 33; card pole 33 and draw-in groove 34 are convenient for cooperate bayonet 11 and coil 2, make things convenient for the card pole 33 block on bayonet 11, make things convenient for heat conduction metal-back 3 block on magnetic core 1, and draw-in groove 34 block is in the one end that coil 2 stretches out magnetic core 1, makes things convenient for coil 2's stability.
Referring to FIG. 6: a plurality of radiating fins 41 are uniformly arranged on the upper surface of the radiating plate 4, and a presser foot 42 is arranged at the position of the radiating plate 4 aligned with the pressure opening 32; the cooling fin 41 is convenient for send out supplementary differential mode inductance and dispels the heat, and the heat that makes things convenient for the differential mode inductance to produce can be quick discharge, and presser foot 42 is convenient for cooperate pressure mouth 32, makes things convenient for the top of heat conduction metal-back 3 to compress tightly on cooling fin 41, makes things convenient for the stable installation on the differential mode inductance of heating panel 4.
Referring to FIG. 1: the surfaces of the magnetic core 1 and the heat-conducting metal shell 3 are covered with a layer of epoxy resin, and a layer of paint is attached to the epoxy resin; epoxy resin and paint can stably connect the heat dissipation plate 4 and the heat conductive metal shell 3 with the magnetic core 1 and the coil 2, and have good insulating effect on the epoxy resin and the paint.
The processing method comprises the following steps: when in processing, a coil 2 is wound on a magnetic core 1, two ends of the coil 2 bypass the magnetic core 1 from a bayonet 11 and are welded with pins 12 together, then heat-dissipating silicone grease is coated on the top end of the magnetic core 1, a heat-dissipating plate 4 is attached to the top end of the magnetic core 1, then a heat-conducting metal shell 3 is clamped on the magnetic core 1, and the heat-conducting metal shell 3 is tightly pressed against the heat-dissipating plate 4, then a UL sleeve method is cancelled to reduce the outer diameter of the product, the product can meet the space requirement of a customer switching power supply board after the overall dimension is reduced, the whole differential mode inductor is soaked in epoxy resin, a layer of epoxy resin is attached to the surface of the differential mode inductor, the differential mode inductor is dried in paint, the differential mode inductor is taken out after a certain time and dried, the paint and the epoxy resin are both subjected to the vacuum pumping process requirement, the phenomenon that bubbles exist in the product is avoided, and the paint and the epoxy resin completely cover the industrial product, the product has better insulation effect, better isolation effect with other components on the switch power supply, better DB value reduction during EMI test, effectively improved production efficiency during operation and more favorable mass production operation.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a high frequency car high Q value small size conduction (EMI) differential mode inductance which characterized in that: including magnetic core (1), magnetic core (1) bottom symmetry is equipped with pin (12), the inboard winding of magnetic core (1) has coil (2), coil (2) both ends are passed magnetic core (1) and are linked together with pin (12), magnetic core (1) top is equipped with heating panel (4), heat dissipation silicone grease has been paintd between heating panel (4) and magnetic core (1) top, magnetic core (1) arc surface outside is equipped with heat conduction metal-back (3), heat conduction metal-back (3) top is pressed at heating panel (4).
2. The high-frequency vehicle high-Q small-volume conduction (EMI) differential mode inductor according to claim 1, wherein the magnetic core (1) is I-shaped, and bayonets (11) are symmetrically arranged at the top end and the bottom end of the arc surface of the magnetic core (1).
3. The high-frequency vehicle high-Q small-volume conduction (EMI) differential mode inductor according to claim 2, wherein a ring of pressing edge (31) is arranged at the top end of the heat-conducting metal shell (3), and a plurality of pressing openings (32) are arranged at the bottom of the pressing edge (31).
4. The high-frequency vehicle high-Q small-volume conduction (EMI) differential mode inductor according to claim 3, wherein a clamping rod (33) is arranged at a position of the inner side of the heat-conducting metal shell (3) aligned with the bayonet (11), and a clamping groove (34) is arranged at the bottom end of the clamping rod (33).
5. The high-frequency vehicle high-Q value small-volume conduction (EMI) differential mode inductor according to claim 4, wherein a plurality of radiating fins (41) are uniformly arranged on the upper surface of the radiating plate (4), and a pressure foot (42) is arranged at a position of the radiating plate (4) aligned with the pressure opening (32).
6. The high-frequency vehicle high-Q small-volume conductive (EMI) differential mode inductor according to claim 5, wherein the surfaces of the magnetic core (1) and the heat-conducting metal shell (3) are covered with a layer of epoxy resin, and the epoxy resin is attached with a layer of paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220626495.9U CN217134137U (en) | 2022-03-22 | 2022-03-22 | High-frequency vehicle high-Q-value small-volume conduction (EMI) differential-mode inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220626495.9U CN217134137U (en) | 2022-03-22 | 2022-03-22 | High-frequency vehicle high-Q-value small-volume conduction (EMI) differential-mode inductor |
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| Publication Number | Publication Date |
|---|---|
| CN217134137U true CN217134137U (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220626495.9U Active CN217134137U (en) | 2022-03-22 | 2022-03-22 | High-frequency vehicle high-Q-value small-volume conduction (EMI) differential-mode inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217134137U (en) |
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- 2022-03-22 CN CN202220626495.9U patent/CN217134137U/en active Active
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