CN213716685U - Magnetic part with low resistance and high heat dissipation capacity - Google Patents
Magnetic part with low resistance and high heat dissipation capacity Download PDFInfo
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- CN213716685U CN213716685U CN202022726452.1U CN202022726452U CN213716685U CN 213716685 U CN213716685 U CN 213716685U CN 202022726452 U CN202022726452 U CN 202022726452U CN 213716685 U CN213716685 U CN 213716685U
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- magnetic core
- low resistance
- high heat
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Abstract
The utility model discloses a low resistance and high heat-sinking capability magnetism spare, including shell, coil, magnetic core, casting glue, the shell is formed by the preparation of aluminium system material, the magnetic core is made by amorphous, nanocrystal, metal powder core, ferrite etc, the coil winding is around the magnetic core to the assembly is inside the shell, the casting glue is used for filling the clearance between shell, coil, the magnetic core, shell surface bottom still is provided with a plurality of heat dissipation fin strips, the shell internal surface with the coil is laminated almost, and both only remain small clearance. By optimizing the winding mode of the coil and the design of the shell, the purposes of improving the reliability of the product, prolonging the service life of the product and reducing the cost are finally achieved.
Description
Technical Field
The utility model relates to a power electronic equipment field, in particular to low resistance and high heat-sinking capability magnetism spare.
Background
In communication and photovoltaic inverter and other outdoor power electronic equipment systems circulating in the market at present, a large number of magnetic electric parts are applied. In the design process of the equipment system, the heating and heat dissipation problems of the parts need to be focused, so that the magnetic parts are generally arranged on the outer side of the system as high-temperature parts, and the heat dissipation is convenient. The magnetic parts mainly generate heat in the magnetic core and the coil, and the magnetic core and the coil are not suitable for being directly exposed in the external atmospheric environment and are usually encapsulated in an aluminum heat dissipation shell and then installed on the outer surface of the system from the perspective of electricity transfer efficiency, so that heat generated in work is conducted from a heating body to the surface of a shell through two different materials of encapsulation glue and the aluminum shell, the highest internal and external temperature difference can reach 50 degrees or more, the thermal resistance value is large, and finally the stability of a product is reduced.
At present, an improved product is urgently needed to be developed, the reliability of the product is improved, the service life of the product is prolonged, and the cost is reduced.
SUMMERY OF THE UTILITY MODEL
In order to realize the purpose of the utility model, the utility model adopts the technical scheme that:
the utility model provides a low resistance and high heat-sinking capability magnetism spare, includes shell, coil, magnetic core, casting glue, the shell material is aluminium, the magnetic core material is any one of amorphous, nanocrystal, metal powder core, ferrite, the coil winding is around the magnetic core to the assembly is inside the shell, the casting glue is used for filling the clearance between shell, coil, the magnetic core, shell surface bottom still is provided with a plurality of heat dissipation fin strips, the shell internal surface with the coil is laminated almost, and both only remain small clearance.
In a preferred embodiment of the present invention, the magnetic core is a segmented magnetic core, the shape of the magnetic core includes but is not limited to any one of CD type, UU type and UI type, and insulating materials with different thicknesses can be filled between the magnetic cores.
In a preferred embodiment of the present invention, the coil is any one of a vertically wound, horizontally wound, or foil wound coil, and the coil is optionally oval, circular, or rectangular in shape after being wound.
In a preferred embodiment of the present invention, the coil outer layer is further provided with an insulating layer, and the insulating layer is made of an interlayer insulating material such as insulating paint, fiber paper, or a polymer film.
In a preferred embodiment of the present invention, the inner surface of the housing is provided with a groove, the shape of the groove is similar to a semicircle or a rectangle with a chamfer, and the number of the grooves is matched with the number of the magnetic cores.
In a preferred embodiment of the present invention, the potting adhesive is a high thermal conductivity silica gel with a thermal conductivity greater than 1.2W/M × k.
The beneficial effects of the utility model reside in that:
the utility model provides a low resistance and high heat-sinking capability magnetism spare through optimizing coil winding mode and shell design, finally reaches promotion product reliability, extension product life, reduce cost's purpose.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is an exploded view of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a prior art cross-sectional view of the present invention.
Fig. 4 is an assembled perspective view of the present invention.
Detailed Description
The detailed structure of the present invention will be further described with reference to the accompanying drawings and the detailed description.
A magnetic member with low resistance and high heat dissipation capability mainly comprises a shell 1, a coil 2, a magnetic core 3 and pouring sealant 4.
Referring to fig. 1, the coil 2 is wound outside the magnetic core 3 in a manner of flat winding, vertical winding or foil winding, and the shape of the coil may be oval, rectangular or circular, the coil is made of copper, aluminum or copper-aluminum alloy, and the outer layer of the coil is treated with an interlayer insulating material such as insulating varnish, fiber paper, polymer film, and the like. The magnetic core 3 can be made of amorphous bodies, nano crystals, metal powder cores (iron silicon/iron silicon aluminum/iron nickel and the like), ferrite and the like, the magnetic core is of a sectional type, insulating paper or insulating plates with different thicknesses can be filled according to different requirements to achieve the inductance required by design, and the shape of the magnetic core 3 can be a CD type, a UU type or a UI type.
Referring to fig. 2 and 3 in combination, the housing 1 is generally made of aluminum, and is manufactured by a machining or die-casting process, and has a recessed inner surface 11 for receiving the assembly of the coil 2 and the core 3 with a gap of about 2-3mm for electrical insulation. In order to make the inner surface of the shell fit the shape of the coil 2 as much as possible, the inner surface 11 is provided with semicircular or square grooves with chamfers, and the number of the grooves can be increased according to actual requirements to match the number of the coils. The bottom surface of the shell 1 is also provided with a plurality of radiating fins 12, and the interval between the radiating fins 12 is about 5-10mm, and the height is about 5-20 mm. Contrast prior art, the utility model discloses a change shell surface design for coil 2 is not less than 50% with the contact surface increase of shell internal surface, and the contact surface increase of shell surface and air is not less than 100%, finally makes its heat-sinking capability promote and is not less than 50%.
After the coil 2 and the magnetic core 3 are assembled, the assembly is placed in the shell 1, then the pouring sealant 4 is injected, the pouring sealant 4 generally adopts high-thermal-conductivity silica gel with the thermal conductivity coefficient larger than 1.2W/M x k, and finally the product is finished.
Claims (6)
1. The utility model provides a low resistance and high heat-sinking capability magnetism spare, includes shell, coil, magnetic core, casting glue, the shell material is aluminium, the magnetic core material is any one of amorphous, nanocrystal, metal powder core, ferrite, the coil winding is around the magnetic core to the assembly is inside the shell, the casting glue is used for filling the clearance between shell, coil, the magnetic core, its characterized in that, shell surface bottom still is provided with a plurality of heat dissipation fins, the shell internal surface with the coil is laminated almost, and both only remain small clearance.
2. The magnetic member with low resistance and high heat dissipation capability as claimed in claim 1, wherein said magnetic core is a segmented magnetic core, and the shape of said magnetic core includes but is not limited to any one of CD type, UU type or UI type, and said magnetic cores may be filled with insulating materials with different thicknesses.
3. A low resistance and high heat dissipation magnetic member as recited in claim 2, wherein said coil is any one of a vertically wound, a horizontally wound or a foil wound coil, and said coil is optionally oval, circular or rectangular in shape after winding.
4. The magnetic member with low resistance and high heat dissipation according to claim 3, wherein the coil is further provided with an insulating layer on the outer layer, and the insulating layer is made of an interlayer insulating material such as an insulating varnish, a fiber paper, or a polymer film.
5. A low resistance and high heat dissipating magnetic member as claimed in claim 1 or 4, wherein said inner surface of said case is provided with grooves having a shape similar to a semicircle or a rectangle with chamfers, and the number of said grooves is matched to the number of said magnetic cores.
6. The magnetic member according to claim 5, wherein the potting compound is a high thermal conductivity silicone having a thermal conductivity greater than 1.2W/M x k.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022726452.1U CN213716685U (en) | 2020-11-23 | 2020-11-23 | Magnetic part with low resistance and high heat dissipation capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022726452.1U CN213716685U (en) | 2020-11-23 | 2020-11-23 | Magnetic part with low resistance and high heat dissipation capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213716685U true CN213716685U (en) | 2021-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022726452.1U Active CN213716685U (en) | 2020-11-23 | 2020-11-23 | Magnetic part with low resistance and high heat dissipation capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213716685U (en) |
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2020
- 2020-11-23 CN CN202022726452.1U patent/CN213716685U/en active Active
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