An efficient integrated high-frequency magnetic component

Abstract

The present invention discloses an efficient integrated high-frequency magnetic component, which relates to the technical field of magnetic components. The efficient integrated high-frequency magnetic component includes a bracket, on the surface of which two receiving tubes are symmetrically arranged. A primary winding and a secondary winding are respectively wound around the surfaces of the two receiving tubes. Two main magnetic cores are also connected to the surface of the bracket. The winding beads of the main magnetic cores are respectively movably connected to the inner walls of the two receiving tubes. A leakage magnetic core is also arranged on the bracket at a position between the two receiving tubes. A closed ring is fixedly connected to the surface of the heat dissipation shell, thereby forming an air duct. External air enters the interior of the air duct through the ventilation slots. The air duct includes an air storage cavity and a fast air guiding cavity, ensuring that the air can better absorb heat and reducing the air flow time, facilitating the rapid dissipation of heat. At the same time, when the heat reaches a certain temperature, the bimetallic strip can also actively form a chamber between the cover plate and the heat dissipation shell, further enhancing the heat dissipation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic components, and specifically to a highly efficient integrated high-frequency magnetic component. Background Art

[0002] Magnetic components are usually composed of windings and magnetic cores. They are essential power electronic devices for energy storage, energy conversion, and electrical isolation, mainly including two categories: transformers and inductors. In almost all power supply circuits, magnetic components are indispensable. Magnetic components are one of the most important components of power electronics technology. Currently, the magnetic materials commonly used in switched-mode power supplies are ferrites. From the perspective of the power loss decomposition of the materials during operation, it includes hysteresis loss, eddy current loss, and other losses. These losses are basically proportional to the operating frequency of the transformer. And the power density of inductors and transformers is proportional to the operating frequency. To reduce the volume of the switched-mode power supply, or to increase the power density of the switched-mode power supply, it is necessary to increase its switching operating frequency.

[0003] A preparation method of a new magnetic material applied to inductors and transformers with the publication number of CN115057696A. The magnetic material prepared by this method has a large grain boundary resistivity, reduces eddy current loss under high-frequency conditions, adjusts the two-peak temperature point of its characteristic curve, so as to achieve the purpose of reducing power loss under high-temperature and high-frequency conditions. It has a low power loss in the frequency range of 100 - 1000KHz, and achieves the purpose of increasing the power density of the switched-mode power supply, that is, reducing the volume of the switched-mode power supply.

[0004] In the prior art, magnetic components will have an increase in temperature due to large losses and difficulty in heat dissipation during operation. The higher temperature will cause the magnetic force of the magnetic core to decrease, affecting the normal operation of the components. Summary of the Invention

[0005] Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the present invention provides a highly efficient integrated high-frequency magnetic component, which solves the problem that magnetic components will have an increase in temperature due to large losses and difficulty in heat dissipation during operation. The higher temperature will cause the magnetic force of the magnetic core to decrease, affecting the normal operation of the components.

[0007] Technical Solutions

[0008] To achieve the above objectives, the present invention is realized through the following technical solutions: A highly efficient integrated high-frequency magnetic component, including a bracket, on the surface of the bracket, two receiving tubes are symmetrically arranged. Primary windings and secondary windings are respectively wound around the surfaces of the two receiving tubes. Two main magnetic cores are also connected to the surface of the bracket. The winding beads of the main magnetic cores are respectively movably connected to the inner walls of the two receiving tubes. A leakage magnetic core is also arranged on the bracket at a position between the two receiving tubes;

[0009] The surface of the bracket is provided with a heat dissipation shell with an open bottom. The inner side wall of the heat dissipation shell is movably connected to the surface of the main magnetic core, and heat dissipation fins are arranged on all four sides of the heat dissipation shell;

[0010] The bracket is fixedly connected to the bottom of the inner side wall of the protective shell. A closing plate is fixedly connected to the top of the protective shell. Pins connected to the primary winding and the secondary winding are fixedly connected to the surface of the bracket, and the pins penetrate through the bottom of the protective shell.

[0011] Further, a temperature sensor is fixedly connected to the surface of the bracket. After the heat dissipation shell is installed on the bracket, a heat dissipation channel is formed between the inner wall surface of the heat dissipation shell and the edge position of the bracket, and the heat dissipation channel corresponds to the temperature sensor;

[0012] Air inlet holes are opened on both the left side and the right side of the surface of the protective shell, and air outlet holes are opened on both the front side and the rear side of the surface of the protective shell. An exhaust fan is connected to the inside of the air outlet holes. The shape of the air inlet holes is waist-shaped, and a plurality of them are arranged in a uniform array. Filter cotton is fixedly connected to the position on the inner wall of the protective shell corresponding to the air inlet holes.

[0013] Further, a closing ring is fixedly connected to the surface of the heat dissipation shell. A wind channel is formed between the inner wall of the closing ring and the outer wall of the heat dissipation shell. A plurality of arc-shaped grooves for ventilation are opened on the surface of the heat dissipation fins. A plurality of ventilation grooves are opened at the position of the closing ring close to the air inlet holes, and a plurality of exhaust grooves are opened at the position of the closing ring corresponding to the air outlet holes;

[0014] A rubber ring is fixedly connected to the position of the protective shell corresponding to the air outlet holes. The surface of the rubber ring is movably connected to the surface of the closing ring to prevent air leakage.

[0015] Further, the middle positions of the four outer walls of the heat dissipation shell are concave, forming an air storage cavity with the closing ring, and the remaining positions form a fast air guiding cavity.

[0016] Further, air guiding grooves are opened at the positions of the top surface of the heat dissipation shell close to the ventilation grooves and the exhaust grooves. A bimetallic strip is fixedly connected to the top surface of the heat dissipation shell. The surface of the bimetallic strip is movably connected to the surface of the cover plate. The surface of the cover plate is movably attached to the inner side wall of the closing ring and the top surface of the heat dissipation shell.

[0017] Further, a jack is opened at the top of the heat dissipation shell. A plug rod is fixedly connected to the bottom surface of the cover plate. The surface of the plug rod is movably connected to the inner side wall of the jack.

[0018] Further, a positioning rod is fixedly connected to the surface of the bracket. The surface of the positioning rod is movably connected to the inner side wall of the jack.

[0019] Further, a plug board is fixedly connected to the bottom of the cover plate. One end of the plug board movably penetrates through the heat dissipation shell and is fixedly connected to the connecting plate by screws. Two first heat conduction pillows are fixedly connected to the surface of the connecting plate, and the positions of the first heat conduction pillows correspond to those of the accommodating tubes one by one. The surface of the connecting plate is movably connected to the surface of the heat dissipation shell;

[0020] Two second heat conduction pillows are fixedly connected to the top of the inner side wall of the heat dissipation shell, and the second heat conduction pillows correspond to the accommodating tubes one by one. The two second heat conduction pillows are respectively movably connected to the primary winding and the secondary winding;

[0021] A plurality of through grooves are formed in the surface of the connecting plate.

[0022] Further, a first anti-collision plate is fixedly connected to the outer wall of the protective shell corresponding to the air inlet hole through a fixing plate. The first anti-collision plate includes a straight part and two arc parts, and the two arc parts are respectively fixedly connected to both sides of the straight part. A second anti-collision plate is fixedly connected to the position of the protective shell corresponding to the exhaust fan through an extension pipe.

[0023] Further, a support plate is fixedly connected to the surface of the extension pipe, and both sides of the support plate are respectively fixedly connected to the surfaces of the second anti-collision plate and the protective shell.

[0024] Beneficial effects

[0025] The present invention has the following beneficial effects:

[0026] (1) For this highly integrated high-frequency magnetic component, by setting the closed ring, exhaust fan, air inlet hole, heat dissipation shell and closed shell, the heat dissipation shell can absorb the heat generated by the primary winding and the secondary winding, and then dissipate the heat into the interior of the protective shell. Moreover, the heat dissipation fins on the heat dissipation shell can increase the heat dissipation area and further enhance heat dissipation. Thus, the heat can be dissipated through passive heat dissipation to ensure that the magnetic component operates within a suitable temperature range. The closed ring is fixedly connected to the surface of the heat dissipation shell to form an air duct. External air enters the interior of the air duct through the ventilation slots. The air duct includes an air storage cavity and a rapid air guiding cavity, which can ensure that the air can better absorb heat and reduce the air flow time, facilitating the rapid dissipation of heat. At the same time, the bimetallic sheet can also actively form a chamber between the cover plate and the heat dissipation shell when the heat reaches a certain temperature, further increasing the heat dissipation effect, solving the problem that the magnetic component will have a large loss during operation and is not easy to dissipate heat, resulting in a temperature rise. A higher temperature will cause the magnetic force of the magnetic core to decrease, affecting the normal operation of the component.

[0027] (2) For this highly integrated high-frequency magnetic component, by setting the first anti-collision plate and the second anti-collision plate, the structural strength of the protective shell can be enhanced through the first anti-collision plate and the second anti-collision plate, thereby preventing the protective shell from being easily damaged, ensuring the integrity of the internal heat dissipation shell, and further protecting the magnetic component.

[0028] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 is a schematic diagram of the internal structure of the protective shell of the present invention;

[0031] Figure 3 is a schematic diagram of the structure at the air outlet of the present invention;

[0032] Figure 4 is a schematic diagram of the structure at the heat dissipation channel of the present invention;

[0033] Figure 5 is a schematic diagram of the structure at the bimetallic strip of the present invention;

[0034] Figure 6 is a schematic diagram of the internal structure of the heat dissipation shell of the present invention;

[0035] Figure 7 is a schematic diagram of the structure at the main magnetic core of the present invention;

[0036] Figure 8 is a schematic diagram of the structure at the first heat conduction pillow of the present invention;

[0037] Figure 9 is a schematic diagram of the structure at the second heat conduction pillow of the present invention.

[0038] In the figure, 1, bracket; 2, receiving tube; 3, primary winding; 4, secondary winding; 5, main magnetic core; 6, heat dissipation shell; 7, heat dissipation fins; 8, protective shell; 9, support plate; 10, pin; 11, temperature sensor; 12, heat dissipation channel; 13, air inlet hole; 14, air outlet hole; 15, exhaust fan; 16, filter cotton; 17, sealing ring; 18, arc groove; 19, ventilation groove; 20, exhaust groove; 21, rubber ring; 22, bimetallic strip; 23, air guiding groove; 24, cover plate; 25, jack; 26, plug rod; 27, positioning rod; 28, plug board; 29, connecting plate; 30, first heat conduction pillow; 31, second heat conduction pillow; 32, through groove; 33, first anti-collision plate; 3301, straight part; 3302, arc part; 34, extension tube; 35, second anti-collision plate. DETAILED DESCRIPTION OF THE INVENTION

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] In the description of the present invention, it should be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or position relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0041] Please refer to Figures 1-9 , an embodiment of the present invention provides a technical solution: a highly integrated high-frequency magnetic component, including a bracket 1, two receiving tubes 2 are symmetrically arranged on the surface of the bracket 1, a primary winding 3 and a secondary winding 4 are respectively wound on the surfaces of the two receiving tubes 2, two main magnetic cores 5 are further connected to the surface of the bracket 1, and the winding beads of the main magnetic cores 5 are respectively movably connected to the inner walls of the two receiving tubes 2. A leakage magnetic core is also arranged at the position between the two receiving tubes 2 on the bracket 1;

[0042] A heat dissipation shell 6 with an open bottom is arranged on the surface of the bracket 1, the inner side wall of the heat dissipation shell 6 is movably connected to the surface of the main magnetic core 5, and heat dissipation fins 7 are arranged on the periphery of the heat dissipation shell 6;

[0043] The bracket 1 is fixedly connected to the bottom of the inner side wall of the protective shell 8, a closing plate is fixedly connected to the top of the protective shell 8, and pins 10 connected to the primary winding 3 and the secondary winding 4 are fixedly connected to the surface of the bracket 1, and the pins 10 penetrate through the bottom of the protective shell 8.

[0044] Specifically, a temperature sensor 11 is fixedly connected to the surface of the bracket 1. After the heat dissipation shell 6 is installed on the bracket 1, a heat dissipation channel 12 is formed between the inner wall surface of the heat dissipation shell 6 and the edge position of the bracket 1, and the heat dissipation channel 12 corresponds to the temperature sensor 11;

[0045] Air inlet holes 13 are opened on both the left and right sides of the surface of the protective shell 8, air outlet holes 14 are opened on both the front and rear sides of the surface of the protective shell 8, an exhaust fan 15 is connected to the inside of the air outlet holes 14, the shape of the air inlet holes 13 is kidney-shaped, and a plurality of air inlet holes 13 are arranged in a uniform array. Filter cotton 16 is fixedly connected to the position of the inner wall of the protective shell 8 corresponding to the air inlet holes 13.

[0046] In this embodiment, the temperature sensor 11 on the bracket 1 can detect the temperature at the heat dissipation channel 12 in real time, so as to more closely detect the temperature inside the heat dissipation shell 6, and then can start the exhaust fan 15 in time to actively dissipate heat from the heat dissipation shell 6, ensuring that the primary winding 3 and the secondary winding 4 work within a suitable temperature range. The air inlet holes 13 are arranged in several numbers to shunt the air entering the inside of the protective shell 8, so that the cold air can evenly blow towards the heat dissipation shell 6 and the closed ring 17, ensuring the uniformity of heat dissipation.

[0047] Specifically, a closed ring 17 is fixedly connected to the surface of the heat dissipation shell 6. A wind channel is formed between the inner wall of the closed ring 17 and the outer wall of the heat dissipation shell 6. A number of arc-shaped grooves 18 for ventilation are formed on the surface of the heat dissipation fins 7. A number of ventilation grooves 19 are formed at the position of the closed ring 17 close to the air inlet holes 13, and a number of exhaust grooves 20 are formed at the position of the closed ring 17 corresponding to the air outlet holes 14.

[0048] A rubber ring 21 is fixedly connected to the position of the protective shell 8 corresponding to the air outlet holes 14. The surface of the rubber ring 21 is movably connected to the surface of the closed ring 17 to prevent air leakage.

[0049] In this embodiment, the closed ring 17 is fixedly connected to the surface of the heat dissipation shell 6, forming a wind channel between the heat dissipation shell 6 and the closed ring 17. Under the action of the exhaust fan 15, air enters the inside of the wind channel and decelerates under the action of the heat dissipation fins, so that the residence time of the air can be increased, enabling the heat to be better conducted to the air. The ventilation grooves 19 can, to a certain extent, accelerate the air circulation and prevent a large amount of heat in the wind channel from being dissipated to the outside of the heat dissipation shell 6. After the bracket 1 and the heat dissipation shell 6 are installed inside the protective shell 8, the rubber ring 21 will closely fit the surface of the protective shell 8, thereby preventing gas leakage and ensuring that all the hot air is discharged through the exhaust fan 15.

[0050] Specifically, the middle positions of the four outer walls of the heat dissipation shell 6 are concave, forming an air storage cavity with the closed ring 17, and the remaining positions form a fast air guiding cavity.

[0051] In this embodiment, the middle positions of the outer walls of the heat dissipation shell 6 are concave, forming an air storage cavity with the closed ring 17, which can allow more air to enter the inside of the wind channel, so that the air can absorb more heat. And at the corners of the heat dissipation shell 6 and the closed ring 17, the cross-section of the wind channel is smaller than that of the air storage cavity, forming a fast air guiding cavity, which can enable the gas to flow quickly when passing through this part of the wind channel, thereby preventing heat from being dissipated to the inside of the protective shell 8, ensuring that the heat quickly enters the inside of the air storage cavity near the exhaust fan 15, and thus preventing serious heat dissipation.

[0052] Specifically, air guiding grooves 23 are formed at positions on the top surface of the heat dissipation shell 6 close to the ventilation grooves 19 and the exhaust grooves 20. A bimetallic strip 22 is fixedly connected to the top surface of the heat dissipation shell 6. The surface of the bimetallic strip 22 is movably connected to the surface of the cover plate 24. The surface of the cover plate 24 is movably attached to the inner side wall of the sealing ring 17 and the top surface of the heat dissipation shell 6.

[0053] In this embodiment, when the temperature on the heat dissipation shell 6 continuously rises, the bimetallic strip 22 is heated and deformed, so that the cover plate 24 can move upward, and a chamber can be formed between the cover plate 24, the sealing ring 17 and the heat dissipation shell 6. Air can enter the interior of the chamber through the air guiding grooves 23, so that the top surface of the heat dissipation shell 6 can also be cooled, increasing the heat dissipation area, and thus the heat can be exported from the protective shell 8 more quickly.

[0054] Specifically, a jack 25 is formed at the top of the heat dissipation shell 6. A plug rod 26 is fixedly connected to the bottom surface of the cover plate 24. The surface of the plug rod 26 is movably connected to the inner side wall of the jack 25.

[0055] In this embodiment, the surface of the plug rod 26 is movably connected to the inner side wall of the jack 25, which can play a role in guiding and limiting when the cover plate 24 moves upward to prevent the cover plate 24 from tilting.

[0056] Specifically, a positioning rod 27 is fixedly connected to the surface of the bracket 1. The surface of the positioning rod 27 is movably connected to the inner side wall of the jack 25.

[0057] In this embodiment, the heat dissipation shell 6 can be connected to the bracket 1 through the positioning rod 27, so that the heat dissipation shell 6 can be installed on the bracket 1, which is convenient for disassembly and assembly.

[0058] Specifically, a plug board 28 is fixedly connected to the bottom of the cover plate 24. One end of the plug board 28 movably penetrates through the heat dissipation shell 6 and is fixedly connected to the connecting plate 29 by screws. Two first heat conduction pillows 30 are fixedly connected to the surface of the connecting plate 29. The first heat conduction pillows 30 correspond to the positions of the receiving tubes 2 one by one. The surface of the connecting plate 29 is movably connected to the surface of the heat dissipation shell 6;

[0059] Two second heat conduction pillows 31 are fixedly connected to the top of the inner side wall of the heat dissipation shell 6. The second heat conduction pillows 31 correspond to the receiving tubes 2 one by one. The two second heat conduction pillows 31 are respectively movably connected to the primary winding 3 and the secondary winding 4;

[0060] A plurality of through grooves 32 are formed in the surface of the connecting plate 29.

[0061] In this embodiment, in the initial state, neither of the two first heat-conducting pillows 30 is in contact with the primary winding 3 and the secondary winding 4, but the second heat-conducting pillow 31 is in contact with the primary winding 3 and the secondary winding 4, facilitating the transfer of heat to the top of the heat-dissipating shell 6, and further facilitating the transfer of heat to the bimetallic strip 22. When the bimetallic strip 22 bends and the cover plate 24 moves upward, the first heat-conducting pillow 30 can be connected to the primary winding 3 and the secondary winding 4, so that heat can be directly transferred to the first heat-conducting pillow 30. At the same time, after the first heat-conducting pillow 30 is in contact with the primary winding 3 and the secondary winding 4, the cover plate 24 can be limited by the connecting plate 29 to prevent the cover plate 24 from rising too far;

[0062] At the same time, through grooves 32 are formed on the surface of the connecting plate 29, which can facilitate the direct introduction of the heat inside the heat-dissipating shell 6 into the chamber, so that the heat can be carried out by the gas, facilitating rapid heat dissipation.

[0063] Specifically, a first anti-collision plate 33 is fixedly connected to the outer wall of the protective shell 8 corresponding to the air inlet hole 13 through a fixing plate. The first anti-collision plate 33 includes a straight portion 3301 and two arc portions 3302. The two arc portions 3302 are respectively fixedly connected to both sides of the straight portion 3301. A second anti-collision plate 35 is fixedly connected to the position of the protective shell 8 corresponding to the exhaust fan 15 through an extension pipe 34.

[0064] In this embodiment, the first anti-collision plate 33 is fixedly connected to the surface of the protective shell 8 through a fixing plate. The fixing plates and the air inlet holes 13 are arranged alternately. The first anti-collision plate 33 includes a straight portion 3301 and an arc portion 3302. The arc portion 3302 can prevent right-angle scratches and cooperate with the second anti-collision plate 35 to protect the protective shell 8, and further prevent serious impacts from damaging the protective shell 8.

[0065] Specifically, a support plate 9 is fixedly connected to the surface of the extension pipe 34. Both sides of the support plate 9 are respectively fixedly connected to the surfaces of the second anti-collision plate 35 and the protective shell 8.

[0066] In this embodiment, a plurality of support plates 9 are provided and evenly distributed on both sides of the extension pipe 34, which can support the second anti-collision plate 35.

[0067] After installing the main magnetic core 5 and the leakage magnetic core on the bracket 1, the primary winding 3 and the secondary winding 4 are respectively wound around the surface of the receiving tube 2. Then, the jack 25 on the heat dissipation shell 6 is aligned with the positioning rod 27 on the bracket 1, and the heat dissipation shell 6 is installed on the bracket 1 through the positioning rod 27 and the jack 25. After installation, a heat dissipation channel 12 is formed between the inner wall of the heat dissipation shell 6 and the bracket 1. The heat generated by the primary winding 3 and the secondary winding 4 can be discharged through the heat dissipation channel 12 and detected by the temperature sensor 11. Subsequently, the cover plate 24 is covered on the top of the heat dissipation shell 6, so that the insertion rod 26 is inserted into the interior of the jack 25, and at the same time, the connecting plate 29 passes through the top of the heat dissipation shell 6. Then, the connecting plate 29 is fixed to the end of the connecting plate 29 by screws. The surface of the connecting plate 29 is attached to the inner side wall of the heat dissipation shell 6. Immediately afterwards, the bracket 1 is fixed inside the protective shell 8, and the pins 10 pass through the protective shell 8. Finally, it is encapsulated by a sealing plate. When in use, the component can be soldered to the circuit board through the pins 10.

[0068] The main magnetic core 5 and the leakage magnetic core can use the magnetic materials disclosed in CN115057696A. By improving the formula of the ferrite material and improving the sintering process, the technical indexes of the material are improved, the power loss of the material is reduced, and thus the operating frequency of the switching power supply can be increased, the operating efficiency of the magnetic component can be improved, and the power density of the switching power supply can be increased, that is, the purpose of reducing the volume of the switching power supply can be achieved. Of course, other magnetic materials can also be used, such as ferrite cores, permalloy cores, amorphous alloy cores, nanocrystalline alloy cores, iron powder cores, iron silicon aluminum cores or iron silicon cores, etc.

[0069] Since the winding has a certain resistance, after a current is passed through it, a certain amount of heat will be generated. If the heat is not processed, it will have an impact on the main magnetic core 5 and the leakage magnetic core. This is because the magnetism of the main magnetic core 5 and the leakage magnetic core will change under the action of heat. When the heat reaches a certain level, the magnetism of the main magnetic core 5 and the leakage magnetic core will disappear.

[0070] The heat dissipation shell 6 is made of aluminum alloy material and has good thermal conductivity. The heat generated by the primary winding 3 and the secondary winding 4 will be conducted to the heat dissipation shell 6 through the air. After being absorbed by the heat dissipation shell 6, it will be dissipated into the space between the protective shell 8 and the heat dissipation shell 6 through the heat dissipation fins 7 on its surface. The heat is transferred to the protective shell 8 through the heat conduction of the air, and then the heat is dissipated through the protective shell 8, so that the passive heat dissipation of the magnetic component can be realized;

[0071] The heat dissipation channel 12 formed between the heat dissipation shell 6 and the bracket 1 can directly discharge heat, reducing the process of heat transfer, enabling the heat to be directly transferred to the protective shell 8 through the air, thereby shortening the heat dissipation time to prevent a large amount of heat from accumulating inside the heat dissipation shell 6. Meanwhile, a temperature sensor 11 is fixedly connected to the position of the bracket 1 corresponding to the heat dissipation channel 12, which can detect the temperature in real time to facilitate timely understanding of the temperature change situation.

[0072] In the control program, a temperature threshold can be set. When the temperature sensor 11 detects that the temperature at the heat dissipation channel 12 reaches the threshold and remains for a certain period of time, the exhaust fan 15 is started for active heat dissipation.

[0073] The two exhaust fans 15 extract the air in the air duct formed after the closed ring 17 and the heat dissipation shell 6, thereby creating a negative pressure inside the air duct. Under the action of the internal negative pressure, the air between the protective shell 8 and the heat dissipation shell 6 will enter the inside of the air duct through several ventilation slots 19 on the closed ring 17, sucking the heat that has not dissipated between the heat dissipation shell 6 and the protective shell 8 into the inside of the air duct and finally discharging it through the exhaust fan 15. The negative pressure environment will cause the cold air in the external environment to enter the inside of the protective shell 8 through the air inlet holes 13 on the protective shell 8, thereby enabling the cold air to absorb the heat on the heat dissipation shell 6 and finally enter the inside of the air duct.

[0074] After the external air enters the inside of the air duct, it will first enter the air storage cavity through the ventilation slots 19. As Figure 6 shown, the middle positions of the four outer walls of the heat dissipation shell 6 are concave, making the space between the closed ring 17 and the heat dissipation shell 6 larger, thereby increasing the air storage capacity inside the air duct near the ventilation slots 19, enabling the air to absorb more heat. At the same time, the air will be blocked by the heat dissipation fins 7 during the flow process and can pass through the arc-shaped slots 18 opened on the heat dissipation fins 7, resulting in a decrease in the wind speed, so that the air has more time to contact the heat to complete heat transfer. The rapid air guide cavity is located at the four corners of the closed ring 17 and the heat dissipation shell 6, where the cross-section of the air duct is smaller. When the exhaust volume of the exhaust fan 15 is stable, the hot air in the air storage cavity near the ventilation slots 19 will be largely sucked away. When passing through the rapid air guide cavity, due to the smaller cross-section, the flow rate of the hot air will increase, enabling it to enter the air storage cavity near the exhaust fan 15 faster, thereby reducing the flow time of the hot air and reducing the heat loss during the flow process, and discharging more heat through the exhaust fan 15.

[0075] When the hot air enters the inside of the air-containing cavity near the exhaust fan 15, under the action of the heat dissipation fins 7, the wind speed is reduced again. In addition to further absorbing heat, it can also prevent the wind speed of the hot air discharged from the air outlet 14 from being too high under the action of the exhaust fan 15, which may affect the surrounding components. A rubber ring 21 is provided between the air outlet 14 and the exhaust slot 20, which can prevent the air from being directly discharged by the exhaust fan 15, so that the air entering the protective shell 8 only passes through the air duct, thereby dissipating heat from the heat dissipation shell 6, and timely dissipating the heat generated by the primary winding 3 and the secondary winding 4 to ensure the normal operation of the components.

[0076] The heat generated by the primary winding 3 and the secondary winding 4 will be radiated outward through the top of the heat dissipation shell 6. Therefore, the bimetallic strip 22 will be heated. When the temperature on its surface reaches a certain temperature, it will bend upward, which will cause the cover plate 24 to move upward. The insertion rod 26 will play a guiding role for the cover plate 24. Under the action of the bimetallic strip 22, a gap is formed between the cover plate 24 and the top of the heat dissipation shell 6, forming a chamber. This chamber has an inlet and an outlet. When the chamber is formed, the exhaust fan 15 will extract the air in the chamber through the air guiding slot 23 near the exhaust slot 20, so that a negative pressure is formed inside the chamber. Then, the air in the air duct can be inhaled through the air guiding slot 23 near the ventilation slot 19. Under the action of the heat dissipation fins 7, the flow rate of the air entering the air-containing cavity near the ventilation slot 19 is reduced, which is convenient for the gas to enter the inside of the chamber from the air guiding slot 23, so that the gas entering the chamber can cool and dissipate the heat from the top of the heat dissipation shell 6, dissipating heat from multiple directions of the heat dissipation shell 6, thereby ensuring that the components work within a stable temperature range, ensuring the magnetism of the main magnetic core 5 and the leakage magnetic core, and further ensuring the high-frequency performance of the components;

[0077] During the upward movement of the cover plate 24, the insertion plate 28 will move upward synchronously, so that the insertion plate 28 can drive the connecting plate 29 to move, and then the two first heat conduction pillows 30 are respectively connected to the primary winding 3 and the secondary winding 4, so that the heat can be directly transferred to the first heat conduction pillow 30. The first heat conduction pillow 30 transfers the heat to the connecting plate 29 and the insertion plate 28, so that the heat can be transferred to the outside of the heat dissipation shell 6, or transferred to the cover plate 24 through the fixing plate. At the same time, the two second heat conduction pillows 31 fixed on the top of the inner side wall of the heat dissipation shell 6 are directly connected to the primary winding 3 and the secondary winding 4, and the heat can be directly transferred to the heat dissipation shell 6, and then conducted to the inside of the chamber, and the heat is taken away by the flowing gas, further enhancing the heat dissipation effect and ensuring the normal operation of the magnetic components;

[0078] In addition, a plurality of through grooves 32 are formed on the surface of the plug board 28. After the cover plate 24 moves the plug board 28 upward, the through grooves 32 communicate the chamber with the interior of the heat dissipation shell 6, so that the heat in the heat dissipation shell 6 can be directly introduced into the interior of the chamber, and under the action of the flowing air, the heat is directly discharged by the exhaust fan 15, thereby further reducing the heat dissipation process and achieving the effect of rapid heat dissipation.

[0079] In summary, by providing the sealing ring 17, the heat dissipation shell 6 and the air duct formed between the sealing ring 17 and the heat dissipation shell 6, the heat generated by the primary winding 3 and the secondary winding 4 can be dissipated through active heat dissipation and passive heat dissipation methods. Furthermore, the components can be ensured to work within a suitable temperature range, improving the working efficiency of the components. Under the detection of the temperature sensor 11, the power of the exhaust fan 15 can be adjusted in a timely manner, so that the heat dissipation can be accelerated by increasing the exhaust speed, preventing the main magnetic core 5 and the leakage magnetic core from being heated and expanded and fractured.

[0080] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0081] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An efficient integrated high-frequency magnetic component, comprising a bracket (1), characterized in that: Two receiving tubes (2) are symmetrically arranged on the surface of the bracket (1). Primary windings (3) and secondary windings (4) are respectively wound around the surfaces of the two receiving tubes (2). Two main magnetic cores (5) are also connected to the surface of the bracket (1). The winding beads of the main magnetic cores (5) are movably connected to the inner walls of the two receiving tubes (2) respectively. A leakage magnetic core is also arranged on the bracket (1) at a position between the two receiving tubes (2); A heat dissipation shell (6) with an open bottom is arranged on the surface of the bracket (1). The inner side wall of the heat dissipation shell (6) is movably connected to the surface of the main magnetic core (5). Heat dissipation fins (7) are arranged on the four sides of the heat dissipation shell (6); The bracket (1) is fixedly connected to the bottom of the inner side wall of the protective shell (8). A closing plate is fixedly connected to the top of the protective shell (8). Pins (10) connected to the primary winding (3) and the secondary winding (4) are fixedly connected to the surface of the bracket (1). The pins (10) penetrate through the bottom of the protective shell (8); A temperature sensor (11) is fixedly connected to the surface of the bracket (1). After the heat dissipation shell (6) is installed on the bracket (1), a heat dissipation channel (12) is formed between the inner wall surface of the heat dissipation shell (6) and the edge position of the bracket (1). The heat dissipation channel (12) corresponds to the temperature sensor (11); Air inlet holes (13) are formed on both the left side and the right side of the surface of the protective shell (8). Air outlet holes (14) are formed on both the front side and the rear side of the surface of the protective shell (8). Exhaust fans (15) are connected to the inside of the air outlet holes (14). The air inlet holes (13) are in a kidney shape and are uniformly arranged in an array. Filter cotton (16) is fixedly connected to the position of the inner wall of the protective shell (8) corresponding to the air inlet holes (13); A closing ring (17) is fixedly connected to the surface of the heat dissipation shell (6). A wind channel is formed between the inner wall of the closing ring (17) and the outer wall of the heat dissipation shell (6). A number of arc-shaped grooves (18) for ventilation are formed on the surface of the heat dissipation fins (7). A number of ventilation grooves (19) are formed at the position of the closing ring (17) close to the air inlet holes (13). A number of exhaust grooves (20) are formed at the position of the closing ring (17) corresponding to the air outlet holes (14); A rubber ring (21) is fixedly connected to the position of the protective shell (8) corresponding to the air outlet holes (14). The surface of the rubber ring (21) is movably connected to the surface of the closing ring (17) to prevent air leakage; The middle positions of the four outer walls of the heat dissipation shell (6) are concave, forming an air storage cavity with the closing ring (17), and the remaining positions form a fast air guiding cavity.

2. An efficient integrated high-frequency magnetic component according to claim 1, characterized in that: Air guiding grooves (23) are formed at the positions of the top surface of the heat dissipation shell (6) close to the ventilation grooves (19) and the exhaust grooves (20). A bimetallic strip (22) is fixedly connected to the top surface of the heat dissipation shell (6). The surface of the bimetallic strip (22) is movably connected to the surface of the cover plate (24). The surface of the cover plate (24) is movably attached to the inner side wall of the closing ring (17) and the top surface of the heat dissipation shell (6).

3. An efficient integrated high-frequency magnetic component according to claim 2, characterized in that: A jack (25) is provided at the top of the heat dissipation shell (6). A plug rod (26) is fixedly connected to the bottom surface of the cover plate (24), and the surface of the plug rod (26) is movably connected to the inner side wall of the jack (25).

4. An efficient integrated high-frequency magnetic component according to claim 3, characterized in that: A positioning rod (27) is fixedly connected to the surface of the bracket (1), and the surface of the positioning rod (27) is movably connected to the inner side wall of the jack (25).

5. An efficient integrated high-frequency magnetic component according to claim 2, characterized in that: A plug board (28) is fixedly connected to the bottom of the cover plate (24). One end of the plug board (28) movably penetrates through the heat dissipation shell (6) and is fixedly connected to a connecting plate (29) by screws. Two first heat conduction pillows (30) are fixedly connected to the surface of the connecting plate (29). The first heat conduction pillows (30) correspond to the positions of the receiving tubes (2). The surface of the connecting plate (29) is movably connected to the surface of the heat dissipation shell (6); Two second heat conduction pillows (31) are fixedly connected to the top of the inner side wall of the heat dissipation shell (6). The second heat conduction pillows (31) correspond to the receiving tubes (2). The two second heat conduction pillows (31) are respectively movably connected to the primary winding (3) and the secondary winding (4); A plurality of through slots (32) are provided on the surface of the connecting plate (29).

6. An efficient integrated high-frequency magnetic component according to claim 1, characterized in that: A first anti-collision plate (33) is fixedly connected to the outer wall of the protective shell (8) corresponding to the air inlet hole (13) through a fixing plate. The first anti-collision plate (33) includes a straight portion (3301) and two arc portions (3302). The two arc portions (3302) are respectively fixedly connected to both sides of the straight portion (3301). A second anti-collision plate (35) is fixedly connected to the position of the protective shell (8) corresponding to the exhaust fan (15) through an extension pipe (34).

7. An efficient integrated high-frequency magnetic component according to claim 6, characterized in that: A support plate (9) is fixedly connected to the surface of the extension pipe (34). Both sides of the support plate (9) are respectively fixedly connected to the surface of the second anti-collision plate (35) and the protective shell (8).

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