Magnetic powder core device

Abstract

The utility model provides a magnetic powder core device, and belongs to the technical field of magnetic powder chips. Comprising multiple magnetic powder chips, the multiple magnetic powder chips are stably connected, every two adjacent magnetic powder chips are detachably connected, the axes of the multiple magnetic powder chips coincide, each magnetic powder chip comprises multiple fan-shaped magnetic powder blocks, and every two adjacent magnetic powder blocks are detachably connected. According to the utility model, the magnetic powder chips are designed into a structure in which the axes coincide and are stably connected, the adjacent magnetic powder chips are detachably connected, and each magnetic powder chip is composed of a plurality of fan-shaped magnetic powder blocks which are detachably connected, so that the aim of independently detaching and replacing damaged parts is fulfilled; and a plurality of radiating fins which are distributed in the radial direction of the magnetic powder chip in a diverging manner are mounted in the magnetic powder block, and one end of each radiating fin extends to the surface of the magnetic powder block to form a radiating fin structure, so that the purpose of high-efficiency heat dissipation is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of magnetic powder chip, especially relates to a magnetic powder core device. BACKGROUND

[0002] At present, with the continuous development of electronic equipment, magnetic powder chip as an important electronic component is widely used in power electronics, communication, new energy and many other fields. With the progress of technology, various electronic equipment has increasingly higher requirements for the performance of magnetic powder chip. Not only does it need to have good electromagnetic characteristics, but it also puts forward higher standards for heat dissipation performance, mechanical stability and maintenance convenience.

[0003] However, most of the existing magnetic powder chips adopt a monolithic structure. When a local area of the magnetic powder chip is damaged, the damaged part cannot be individually disassembled and replaced, so the entire magnetic powder chip often needs to be replaced. This not only increases the maintenance cost of the equipment, including the cost of purchasing a new magnetic powder chip and the labor cost during the replacement process, but also causes the equipment downtime to be prolonged, affecting the production efficiency and the normal operation of the equipment, greatly limiting the application of magnetic powder chips in some scenarios with higher requirements for maintenance convenience and equipment operation continuity. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a magnetic powder core device to solve the technical problems that the existing magnetic powder chip adopts a monolithic structure, cannot be individually disassembled and replaced when a local area is damaged, and the traditional magnetic powder chip relies on natural surface heat dissipation, which is inefficient and prone to performance degradation due to heat accumulation under high-power working conditions.

[0005] Technical scheme: To achieve the above purpose, the utility model is implemented by the following technical scheme: a magnetic powder core device, comprising: a plurality of magnetic powder chips, the plurality of magnetic powder chips are stably connected, and adjacent two magnetic powder chips are detachably connected, and the shaft centers of the plurality of magnetic powder chips coincide, the magnetic powder chip comprises a plurality of fan-shaped magnetic powder blocks, and adjacent two magnetic powder blocks are detachably connected, wherein the detachable connection mode can adopt a mortise and tenon structure connection in addition to the common bolt connection and buckle connection. This connection mode ensures stable connection while the installation and disassembly operation is relatively simple.

[0006] In a further embodiment, a flexible block is connected between adjacent two magnetic powder blocks, the flexible block is used to buffer the stress generated by thermal expansion and cold contraction of adjacent magnetic powder blocks during work, wherein the thickness of the flexible block is between 0.5-2 millimeters, ensuring that the stress can be effectively buffered without affecting the compactness of the whole magnetic powder chip.

[0007] In a further embodiment, a flexible layer is connected between two adjacent magnetic powder core pieces, the flexible layer is used to isolate electromagnetic interference between adjacent magnetic powder core pieces, wherein the thickness of the flexible layer is not more than 10% of the thickness of the magnetic powder core piece, so as to meet the electromagnetic isolation requirements while not significantly increasing the overall size of the magnetic powder core device.

[0008] In a further embodiment, a plurality of heat dissipation fins are provided and mounted in the magnetic powder block, the heat dissipation fins are used to increase the heat dissipation area of the magnetic powder block, wherein the shape of the heat dissipation fins can be designed in a wave shape or a sawtooth shape in addition to the common rectangular shape, further increasing the heat dissipation area; the minimum spacing between the heat dissipation fins is not less than 0.5mm, ensuring that air can flow smoothly between the fins, improving the heat dissipation efficiency.

[0009] In a further embodiment, the heat dissipation fins are distributed in the radial direction of the magnetic powder core piece, one end of the heat dissipation fins extends to the surface of the magnetic powder block to form heat dissipation fins, wherein the spacing between the heat dissipation fins is between 1-3mm to balance the heat dissipation effect and the stability of the internal structure of the magnetic powder block.

[0010] In a further embodiment, the heat dissipation fins are distributed at equal intervals in the magnetic powder block, wherein the spacing between the heat dissipation fins is between 1-3mm to balance the heat dissipation effect and the stability of the internal structure of the magnetic powder block.

[0011] In a further embodiment, the flexible layer is composed of polyimide and nanometer graphite sheets, wherein the flexible layer can also be composed of organic high polymer composite materials containing metal fibers, which can also achieve good electromagnetic shielding effect, and the organic high polymer composite materials containing metal fibers have high conductivity of metal and flexibility of organic high polymer materials. Metal fibers can efficiently reflect and absorb electromagnetic waves to form a good electromagnetic shielding layer; organic high polymer materials give the flexible layer good processability and mechanical properties, so that it can be closely attached between the magnetic powder core pieces and stably play the role of electromagnetic isolation in complex electromagnetic environment, while adapting to the slight deformation of the magnetic powder core pieces during work.

[0012] In a further embodiment, the flexible block is made of silicone rubber, wherein the flexible block can also be made of rubber materials with high elasticity and good weather resistance such as nitrile rubber and ethylene-propylene-diene rubber. Nitrile rubber has excellent resistance to chemicals such as oil, which is suitable for working environments that may come into contact with oil stains, effectively preventing performance degradation caused by chemical corrosion; ethylene-propylene-diene rubber has excellent anti-aging performance, which can maintain good elasticity and cushioning performance for a long time in outdoor or high temperature and high humidity environments, prolonging the service life of the flexible block and ensuring the stable operation of the magnetic powder core device.

[0013] Beneficial effects: 1. By designing the magnetic powder chip as a structure of multiple axes coinciding and stably connected, detachable connection between adjacent magnetic powder chips, and each magnetic powder chip composed of multiple detachable fan-shaped magnetic powder blocks, the purpose of individually disassembling and replacing the damaged part is achieved; such modular design makes it unnecessary to replace the entire magnetic powder core device when a magnetic powder block or magnetic powder chip is damaged, and only the damaged part needs to be replaced. The effect of reducing equipment maintenance cost is achieved.

[0014] 2. By installing multiple heat dissipation fins in the magnetic powder block, which are distributed in the radial direction of the magnetic powder chip, and the heat dissipation fins extend to the surface of the magnetic powder block to form a structure of heat dissipation fins, the purpose of high-efficiency heat dissipation is achieved; the heat dissipation fins increase the heat dissipation area of the magnetic powder block, and the heat dissipation fins further strengthen the heat dissipation effect, which can quickly dissipate the heat generated by the magnetic powder chip under high-power working conditions; the effect of effectively reducing the working temperature of the magnetic powder chip, avoiding performance degradation due to heat accumulation, prolonging the service life of the magnetic powder chip, and ensuring stable operation under various working conditions is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0016] Figure 1 It is a structural schematic diagram of the present application.

[0017] Figure 2 It is Figure 1 a main sectional structure schematic diagram.

[0018] The reference numerals in the drawings are: 1, magnetic powder chip; 101, magnetic powder block; 2, flexible block; 3, flexible layer; 4, heat dissipation fin. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme in the present application is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0020] The embodiment of the application provides a magnetic powder core device, which solves the technical problems that the existing magnetic powder core sheet adopts a whole structure, cannot be individually disassembled and replaced when a local part is damaged, and is poor in efficiency and is prone to performance decline due to heat accumulation under high-power working conditions because the traditional magnetic powder core sheet mainly relies on natural surface heat dissipation.

[0021] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings of the specification and specific embodiments.

[0022] Referring to Figures 1-2 A magnetic powder core device comprises a plurality of magnetic powder core sheets 1, the plurality of magnetic powder core sheets 1 are stably connected, and adjacent two magnetic powder core sheets 1 are detachably connected, and the plurality of magnetic powder core sheets 1 have coaxial shafts, the magnetic powder core sheet 1 comprises a plurality of fan-shaped magnetic powder blocks 101, and adjacent two magnetic powder blocks 101 are detachably connected.

[0023] The modular design of the magnetic powder core device is realized, and the installation, disassembly and maintenance are facilitated, the damaged part can be individually replaced, the maintenance cost and time are reduced, and the integrity and performance stability of the whole structure of the magnetic powder core sheet 1 are ensured.

[0024] A flexible block 2 is connected between adjacent two magnetic powder blocks 101, and the flexible block 2 is used for buffering the stress generated by thermal expansion and cold contraction of adjacent magnetic powder blocks 101 in the working process.

[0025] The stress generated by thermal expansion and cold contraction of adjacent magnetic powder blocks 101 is buffered, stress concentration leading to damage of the magnetic powder block 101 is avoided, and the mechanical stability and reliability of the whole magnetic powder core sheet 1 are enhanced.

[0026] A flexible layer 3 is connected between two adjacent magnetic powder core sheets 1, and the flexible layer 3 is used for isolating electromagnetic interference between adjacent magnetic powder core sheets 1.

[0027] The electromagnetic interference between adjacent magnetic powder core sheets 1 is isolated, the electromagnetic performance of the magnetic powder core device is optimized, and the magnetic powder core device can stably work in a complex electromagnetic environment.

[0028] A plurality of heat dissipation fins 4 are arranged, and the heat dissipation fins 4 are installed in the magnetic powder block 101, and the heat dissipation fins 4 are used for increasing the heat dissipation area of the magnetic powder block 101.

[0029] The heat dissipation area of the magnetic powder block 101 is increased, which provides a basic condition for efficient heat dissipation, helps to reduce the working temperature of the magnetic powder core sheet 1, and prevents performance decline due to overheating.

[0030] The heat dissipation fins 4 are distributed along the radial direction of the magnetic powder chip 1, and one end of the heat dissipation fins 4 extends to the surface of the magnetic powder block 101 to form heat dissipation fins.

[0031] The reinforced heat dissipation effect is achieved, the heat dissipation fins 4 are distributed along the radial direction and form heat dissipation fins, which further improves the heat dissipation efficiency and ensures the stable operation of the magnetic powder chip 1 under high power and other working conditions.

[0032] The heat dissipation fins 4 are distributed at equal intervals in the magnetic powder block 101.

[0033] The uniformity of heat dissipation is ensured, the heat dissipation of each part of the magnetic powder block 101 is balanced through equal interval distribution, and the interval can be optimized to adapt to different heat dissipation requirements, taking into account the heat dissipation effect and the stability of the internal structure of the magnetic powder block 101.

[0034] The flexible layer 3 is composed of polyimide and nanometer graphite sheets.

[0035] Good flexibility and electromagnetic shielding performance are achieved, the flexible layer 3 composed of polyimide and nanometer graphite sheets can closely fit the magnetic powder chip 1 and effectively shield electromagnetic interference.

[0036] The flexible block 2 is made of silicone rubber.

[0037] Good elasticity and buffering performance are achieved, the flexible block 2 made of silicone rubber can effectively buffer stress, and the cost is relatively low, the process is mature, and it is suitable for various working environments.

[0038] In use, the plurality of axis coincides and stably connects, the adjacent detachable connection magnetic powder chip 1, and the magnetic powder chip 1 structure composed of a plurality of detachable connection fan-shaped magnetic powder blocks 101, ensure the stability and maintainability of the whole device, for example, if a fan-shaped magnetic powder block 101 is damaged, since it is detachably connected with adjacent magnetic powder blocks 101, the maintenance personnel can quickly and individually detach the damaged magnetic powder block 101 for replacement; if a magnetic powder chip 1 has a problem, it can also be replaced conveniently by virtue of the detachable connection between adjacent magnetic powder chips 1, without replacing the whole device; in the working process, due to temperature change, adjacent magnetic powder blocks 101 will generate stress due to thermal expansion and contraction, at this time, the flexible block 2 of the silicon rubber material plays a role, buffers these stresses, avoids stress concentration to cause the damage of the magnetic powder block 101, and enhances the mechanical stability of the whole magnetic powder chip 1; meanwhile, the flexible layer 3 between the plurality of magnetic powder chips 1 is composed of polyimide and nanometer graphite sheets, effectively isolates the electromagnetic interference between adjacent magnetic powder chips 1, optimizes the electromagnetic performance, and enables the device to work stably in a complex electromagnetic environment; along with the working of the magnetic powder chip 1, heat is generated, and the plurality of cooling fins 4 installed in the magnetic powder block 101 begin to play a role, they increase the heat dissipation area of the magnetic powder block 101, and are distributed in the radial direction of the magnetic powder chip 1, one end extends to the surface of the magnetic powder block 101 to form a heat dissipation fin, and the cooling fins 4 are distributed at equal intervals in the magnetic powder block 101, so that the heat dissipation uniformity is guaranteed, the heat dissipation effect is further strengthened, heat is quickly dissipated, the working temperature of the magnetic powder chip 1 is reduced, overheating is prevented to cause performance decline, and the stable operation of the magnetic powder chip 1 under high power and other working conditions is ensured.

[0039] The figure expressed in the drawing is an example figure, and the purpose is only to more intuitively show the key structure and connection relationship of the magnetic powder core device; in actual application, the appearance and size of the device can be adjusted and optimized according to specific needs.

[0040] The utility model covers any alternative, modification, equivalent method and scheme made on the essence and range of the utility model. In order to enable the public to have a thorough understanding of the utility model, the specific details are explained in the above preferred embodiment of the utility model, and the utility model can also be completely understood without the description of these details for the person skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the utility model, well-known methods, processes, procedures, elements and circuits are not described in detail.

[0041] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for ordinary skilled personnel in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements should also be regarded as the protection range of the utility model.

Claims

1. A magnetic powder core device, characterized by, Comprising: The magnetic powder chip (1) is provided with a plurality of magnetic powder chips (1), a plurality of said magnetic powder chips (1) are stably connected, and adjacent two magnetic powder chips (1) are detachably connected, and a plurality of said magnetic powder chips (1) are coaxial, said magnetic powder chip (1) comprises a plurality of fan-shaped magnetic powder blocks (101), and adjacent two magnetic powder blocks (101) are detachably connected.

2. A magnetic powder core device according to claim 1, characterized by Also including: The flexible block (2) is connected between adjacent two magnetic powder blocks (101), and said flexible block (2) is used for buffering the stress generated by thermal expansion and cold shrinkage of adjacent magnetic powder blocks (101) during work.

3. A magnetic powder core device according to claim 1, characterized by Also including: The flexible layer (3) is connected between two adjacent magnetic powder chips (1), and said flexible layer (3) is used for isolating electromagnetic interference between adjacent magnetic powder chips (1).

4. A magnetic powder core device according to claim 1, characterized by Also including: The heat sink (4) is provided with a plurality of heat sinks (4), and said heat sink (4) is installed in the magnetic powder block (101), said heat sink (4) is used for increasing the heat dissipation area of the magnetic powder block (101).

5. A magnetic powder core device according to claim 4, characterized by: Said heat sink (4) is distributed along the radial direction of said magnetic powder chip (1), one end of said heat sink (4) extends to the surface of said magnetic powder block (101), forming a heat dissipation fin.

6. A magnetic powder core device according to claim 4, characterized by: Said heat sink (4) is distributed at equal intervals in said magnetic powder block (101).

7. A magnetic powder core device according to claim 3, characterized by: Said flexible layer (3) is made of polyimide and nanometer graphite sheet.

8. A magnetic powder core device according to claim 2, characterized by: Said flexible block (2) is made of silicone rubber material.

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