Insulating spacer and magnetic device

Abstract

The application provides an insulating spacer and a magnetic device, and belongs to the technical field of electrical insulation. The insulating spacer is made of insulating material and comprises: a box body, comprising a bottom wall and a side wall, which are jointly configured as a containing cavity with an opening at the top, the containing cavity being used for accommodating a to-be-insulated piece, at least one through hole for circulating heat-conducting medium being arranged at the bottom wall and / or the side wall, the through hole being arranged at a preset position to ensure that the distance between the to-be-insulated piece and the through hole is greater than a preset value; a first limiting piece protruding from one side of the bottom wall away from the containing cavity and used for limiting the distance between the bottom wall and the to-be-installed containing cavity; and a second limiting piece protruding from one side of the side wall away from the containing cavity and used for limiting the distance between the side wall and the to-be-installed containing cavity. The insulating spacer can meet the insulation requirement and effectively improve the heat dissipation effect.

Description

Technical Field

[0001] This application relates to the field of electrical isolation technology, and in particular to an insulating isolation component and a magnetic device. Background Technology

[0002] Magnetic components such as transformers and power inductors in power supply products have significant heat loss and typically require dedicated heat dissipation structures. In high-power power supply products, magnetic components are usually embedded within a heat sink cavity, which is then filled with thermally conductive adhesive. The heat from the magnetic components is transferred to the heat sink through the adhesive, and then air convection or radiation is used to transfer the heat from the heat sink to the outside, effectively reducing the temperature of the magnetic components.

[0003] In addition to the aforementioned thermal conductivity requirements, magnetic devices, as charged bodies, must also meet the insulation requirements for safety certification. In existing technologies, to meet insulation and heat dissipation requirements, the following two isolation structures are typically used: 1. An insulating film is placed between the magnetic device and the heat sink, with thermally conductive adhesive placed between the insulating film and the magnetic device, and between the insulating film and the heat sink; 2. The distance between the magnetic device and the heat sink is set to the distance required by safety regulations, and thermally conductive adhesive is filled in, without the insulating film. In the first approach, if the magnetic device is first wrapped with an insulating film and then placed inside the heat sink cavity, the thermally conductive adhesive may not be able to contact the magnetic device, or the contact may be insufficient, resulting in high thermal resistance and poor thermal conductivity. If the insulating film with adhesive backing is first applied to the heat sink cavity, it is difficult to apply smoothly, easily causing wrinkles and bubbles, leading to poor heat dissipation, and the application efficiency is low, making mass production impossible. The second approach, to absorb processing and installation errors, adds a certain distance to the distance required by safety regulations to ensure that the final product spacing meets the requirements. This results in an excessively large spacing, leading to poor heat dissipation of the thermally conductive adhesive.

[0004] Therefore, existing devices that require insulation and thermal conductivity suffer from poor heat dissipation due to the need to meet insulation requirements. Utility Model Content

[0005] One objective of the first aspect of this utility model is to provide an insulating isolation component that can meet insulation requirements and effectively improve heat dissipation.

[0006] Another objective of the first aspect of this utility model is to save costs.

[0007] A further objective of the first aspect of this utility model is to reduce production costs, improve production efficiency, and achieve industrialization.

[0008] A second aspect of this invention aims to provide a magnetic device including the aforementioned insulating insulating element.

[0009] In particular, according to one aspect of this application, an insulating insulating member is provided, made of an insulating material and comprising: The box body includes a bottom wall and a side wall. The bottom wall and the side wall together form a receiving cavity with an opening at the top. The receiving cavity is used to accommodate the component to be isolated. The bottom wall and / or the side wall are provided with at least one through hole for the flow of heat-conducting medium. The through hole is set at a preset position to ensure that the distance between the component to be isolated and the through hole is greater than a preset value. The first limiting member protrudes from the side of the bottom wall away from the receiving cavity, and is used to limit the distance between the bottom wall and the receiving cavity to be installed; The second limiting member protrudes from the side of the sidewall away from the receiving cavity, and is used to limit the distance between the sidewall and the receiving cavity to be installed.

[0010] Optionally, the thickness of the insulating separator is any value between 0.175mm and 0.3mm.

[0011] Optionally, the first limiting member includes a plurality of first limiting protrusions, and the second limiting member includes a plurality of second limiting protrusions.

[0012] Optionally, the first limiting protrusion is a tapered protrusion that gradually tapers away from the bottom wall.

[0013] Optionally, the second limiting protrusion is a rib extending in a direction perpendicular to the bottom wall.

[0014] Optionally, the sidewall is provided with a flange at one end away from the bottom wall, and the flange protrudes from the sidewall in a direction away from the receiving cavity.

[0015] Optionally, the flange includes a flat plate portion connected to the sidewall on one side, and a flange connected to the side of the flat plate portion away from the sidewall, the flange extending from the flat plate portion toward the bottom wall.

[0016] Optionally, the insulating insulating element is manufactured by a vacuum forming process.

[0017] In particular, according to another aspect of this application, a magnetic device is also provided, comprising: The insulating isolation element described in any of the above items; A radiator having a cavity for accommodating the insulating insulating member; A magnetic component, wherein the accommodating cavity of the insulating isolator is used to accommodate the magnetic component; A thermally conductive medium is injected into the gap between the magnetic component and the insulating isolator, flowing from the through hole into the gap between the insulating isolator and the heat sink.

[0018] Optionally, the magnetic component includes an electrically connected magnetic device and a circuit board, the magnetic device being located within the accommodating cavity, and the circuit board being fastened to the side of the heat sink where the cavity is located by fasteners.

[0019] According to one aspect of this utility model, since the bottom wall and side wall of the box body are respectively provided with a first limiting member and a second limiting member, a certain distance can be maintained between the box body and the cavity to be installed, forming a gap for the heat-conducting medium. The box body is provided with a through hole, which can ensure that the heat-conducting medium flows into the gap, that is, it can ensure that the heat-conducting medium is effectively filled between the component to be isolated and the insulating component, and between the insulating component and the mounting component. Therefore, while ensuring insulation, it can effectively improve the heat conduction performance and improve the heat dissipation effect.

[0020] Furthermore, this application no longer requires setting the distance between the component to be isolated and the mounting component to a safety standard distance; it only needs to ensure that the through-hole meets the safety standard distance. Therefore, it effectively saves the amount of heat-conducting medium used, thereby saving costs while ensuring insulation and heat dissipation.

[0021] Furthermore, the flange on the housing body of this application can enhance the strength and dimensional stability of the insulating isolation component. The flange can also increase the electrical clearance and creepage distance between the component to be isolated and the mounting component, thereby improving safety.

[0022] Furthermore, the insulating insulating component is prepared by vacuum forming, thus forming an extremely thin box component that acts as an insulating film. The molds used in vacuum forming are inexpensive, the production cycle is short, and the price of the finished product is even lower than that of thermally conductive silicone cloth. Its ease of operation also makes it suitable for mass production, thus effectively reducing production costs, improving production efficiency, and facilitating industrialization. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an insulating insulating member according to an embodiment of the present invention; Figure 2 for Figure 1 Another structural schematic diagram of the insulating insulating component; Figure 3 This is a cross-sectional view of a magnetic device according to an embodiment of the present invention; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a structural diagram of the heat sink of a magnetic device according to an embodiment of the present invention; Figure 6 This is an exploded view of a magnetic device according to an embodiment of the present invention; Figure label: Insulating isolation component 100, box body 10, bottom wall 11, side wall 12, accommodating cavity 101, through hole 110, first limiting component 20, second limiting component 30, adhesive gap 102, annular inner cavity 103, first limiting protrusion 21, second limiting protrusion 31, middle part 111, side part 112, flange 40, flat part 41, flange 42, magnetic component 200, heat sink 300, cavity 310, magnetic device 210, circuit board 220, mounting protrusion 320, fastener 400. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0025] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0026] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed description. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the spirit of this disclosure.

[0027] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article indicates that the preceding and following related objects have an "or" relationship.

[0028] In this application's embodiments, "multiple" refers to two or more. The descriptions of "first," "second," etc., appearing in this application's embodiments are merely illustrative and for distinguishing the described objects; they have no order and do not indicate a specific limitation on the number in this application's embodiments, nor do they constitute any limitation on the embodiments of this application.

[0029] Figure 1 This is a structural schematic diagram of an insulating insulating member 100 according to an embodiment of the present invention. Figure 2 for Figure 1Another structural schematic diagram of the insulating isolator 100 from another perspective. Figure 3 This is a cross-sectional view of a magnetic device according to an embodiment of the present invention. Figure 5 This is a structural diagram of a heat sink 300 for a magnetic device according to an embodiment of the present invention. The insulating isolation member 100 of this application is used for components requiring insulation and heat conduction, such as magnetic devices 210 like transformers and power inductors in power supply products. Figure 1 As shown, in one embodiment, the insulating isolation member 100 includes a housing body 10, a first limiting member 20, and a second limiting member 30. The insulating isolation member 100 is made of an insulating material, such as PVC, PET, or PC. The housing body 10 includes a bottom wall 11 and a side wall 12, which together form a receiving cavity 101 with an opening at the top. The receiving cavity 101 is used to accommodate the isolation member. At least one through hole 110 for the flow of a heat-conducting medium is provided at the bottom wall 11 and / or the side wall 12. The heat-conducting medium can be potting compound. The through-hole 110 is positioned at a preset location to ensure that the distance between the component to be isolated and the through-hole 110 is greater than a preset value. This indirectly ensures that the shortest distance Lm between the component to be isolated and the heat dissipation structure at the location of the through-hole 110 (the length of the shortest straight line passing through the through-hole 110 and with its two ends respectively connected to the component to be isolated and the heat sink 300) meets safety regulations. For example, if the minimum distance required by safety regulations is 5.7mm, the minimum distance Lm can be designed to be 7.6mm, thus meeting safety regulations within a certain range of processing and installation errors. Figure 2 As shown, in this embodiment, the through holes 110 are all provided on the bottom wall 11. The first limiting member 20 protrudes from the side of the bottom wall 11 away from the receiving cavity 101, and is used to limit the distance between the bottom wall 11 and the cavity to be installed. The second limiting member 30 protrudes from the side wall 12 away from the receiving cavity 101, and is used to limit the distance between the side wall 12 and the cavity to be installed. Here, the cavity to be installed and the cavity of the mounting component, the mounting component can be a heat sink 300, such as... Figure 4 As shown, the radiator 300 has a cavity 310 for accommodating the insulating insulating member 100, which is the cavity to be installed. The first limiting member 20 and the second limiting member 30 may each include multiple dispersed protrusions, or each may include only one protrusion. When the first limiting member 20 and the second limiting member 30 each include only one protrusion, the protrusion may be a continuously extending feature, such as an annular protrusion at the sidewall 12; this is not limited here. In this embodiment, as... Figure 2 As shown, the first limiting member 20 includes a plurality of first limiting protrusions 21, and the second limiting member 30 includes a plurality of second limiting protrusions 31.

[0030] It should be noted that, as Figure 3As shown, the component to be isolated typically does not have a regular outer surface. Therefore, after the component to be isolated is placed into the receiving cavity 101, there will be some gaps between the component to be isolated and the receiving cavity 101. These gaps are used to accommodate the heat-conducting medium. Of course, for better heat dissipation, the receiving cavity 101 of the insulating insulating component 100 can be designed to roughly match the shape of the component to be isolated, such as... Figure 3 The bottom wall 11 of the component to be isolated is designed as a boss.

[0031] When using the insulating insulating member 100 of this embodiment, the insulating insulating member 100 is first placed into the cavity to be installed. The first limiting member 20 and the second limiting member 30 maintain a certain distance between the insulating insulating member 100 and the bottom and side surfaces of the cavity to be installed, forming a sealant gap 102. Then, a certain amount of heat-conducting medium is injected into the accommodating space of the insulating insulating member 100. Next, the component to be insulated is placed into the accommodating space of the insulating insulating member 100. The component to be insulated compresses the heat-conducting medium, causing the heat-conducting medium to flow into the sealant gap 102 through the through hole 110. At the same time, the heat-conducting medium in the accommodating space fills the gap between the component to be insulated and the insulating insulating member 100, thereby effectively filling the space between the component to be insulated and the insulating insulating member 100, as well as between the insulating insulating member 100 and the mounting component. When injecting the heat-conducting medium, a reasonable injection amount can be pre-calibrated to ensure that the heat-conducting medium can effectively fill the sealant gap 102 and the gap between the component to be insulated and the insulating insulating member 100.

[0032] In this embodiment, since the bottom wall 11 and the side wall 12 of the box body 10 are respectively provided with the first limiting member 20 and the second limiting member 30, a certain distance can be maintained between the box body 10 and the cavity to be installed, forming a heat-conducting medium adhesive gap 102. The box body 10 is provided with a through hole 110, which can ensure that the heat-conducting medium flows into the adhesive gap 102. That is, it can ensure that the space between the isolation component and the insulating isolation component 100, and between the insulating isolation component 100 and the installation component are effectively filled with heat-conducting medium. Therefore, while ensuring insulation, it can effectively improve the heat conduction performance and improve the heat dissipation effect.

[0033] Furthermore, this solution no longer requires setting the distance between the component to be isolated and the mounting component to a safety standard distance; it only needs to ensure that the distance at the through hole 110 meets the safety standard distance. Therefore, it effectively saves the amount of heat-conducting medium used, thereby saving costs while ensuring insulation and heat dissipation.

[0034] like Figure 2 As shown, in one embodiment, in order to adapt to the shape of the component to be isolated, the bottom wall 11 of the box body 10 is provided as a boss shape, that is, the bottom wall 11 of the box body 10 includes a middle portion 111 and side portions 112 located on both sides of the middle portion 111, and the middle portion 111 is lower than the side portions 112 (see...). Figure 3The middle part 111 and each side part 112 are provided with through holes 110. In this embodiment, the through holes 110 of the middle part 111 include two arc-shaped holes arranged at intervals, and the through holes 110 of each side part 112 include two circular holes arranged at intervals. The area of ​​the arc-shaped holes is larger than the area of ​​the circular holes.

[0035] In this embodiment, the area of ​​the middle part 111 is larger than that of the side part 112, so the area opposite to the cavity to be installed is larger. The larger area of ​​the arc-shaped hole can better facilitate the flow of the heat-conducting medium, so that the heat-conducting medium can effectively fill the gap on the lower side of the middle part 111. The multiple round holes provided on the two side parts 112 can work together with the arc-shaped holes to effectively facilitate the flow of the heat-conducting medium, so that the adhesive gap 102 between the insulating insulating member 100 and the cavity to be installed is effectively filled with the heat-conducting medium.

[0036] In a further embodiment, the first limiting protrusion 21 is a tapered protrusion that gradually tapers away from the bottom wall 11. The second limiting protrusion 31 is a rib extending in a direction perpendicular to the bottom wall 11. In this embodiment, the bottom wall 11 is provided with four tapered protrusions arranged in a rectangular array, and the side wall 12 is uniformly provided with multiple ribs in the circumferential direction.

[0037] In this embodiment, the first limiting protrusion 21 at the bottom wall 11 of the box body 10 is designed as a gradually tapering conical protrusion. Therefore, the area at the bottom end is relatively small, which is equivalent to forming a positioning point at the bottom end of the first limiting protrusion 21. Compared with a large-area protrusion, this is more conducive to forming a flat bottom positioning surface, and it also ensures that the first limiting member 20 does not tilt when it directly contacts the cavity to be installed. Furthermore, the conical protrusion can be adapted to manufacturing processes that require mold preparation, such as injection molding and vacuum forming, making demolding convenient.

[0038] Furthermore, the second limiting protrusion 31 of the side wall 12 of the box body 10 is configured as a vertically extending rib, which has a larger limiting area and can more effectively isolate the side wall 12 and the cavity to be installed.

[0039] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle. (See image below.) Figure 1 As shown, see also Figure 2 In another embodiment, a flange 40 is provided at the end of the sidewall 12 away from the bottom wall 11, and the flange 40 protrudes from the sidewall 12 in a direction away from the receiving cavity 101. Figure 4 As shown, the flange 40 includes a flat plate portion 41 connected to the side wall 12 on one side, and a flange 42 connected to the side of the flat plate portion 41 away from the side wall 12. The flange 42 extends from the flat plate portion 41 toward the bottom wall 11, and the connection between the flange 42 and the flat plate portion 41 can be set to an arc shape.

[0040] The flange 40 in this embodiment can enhance the strength and dimensional stability of the insulating isolator 100. The flange 40 can also increase the electrical clearance and creepage distance between the isolator and the mounting component, thereby improving safety.

[0041] Furthermore, the annular cavity 103 formed by the flange 42, the flat plate portion 41, and the sidewall 12 of the flange 40 can accommodate the heat-conducting medium, thereby further enhancing the heat conduction effect.

[0042] In one embodiment, the insulating insulating member 100 is manufactured using a vacuum forming process. For example, a thin PC sheet is used as the raw material to prepare a box-shaped part with a similar shape to the insulating member through a vacuum forming process. The thickness of the insulating insulating member 100 is any value between 0.175mm and 0.3mm, for example, a wall thickness of 0.175mm, 0.2mm, 0.25mm, or 0.3mm. Setting the thickness of the insulating insulating member 100 between 0.175mm and 0.3mm can ensure a good insulation effect while preventing excessive thermal resistance due to excessive thickness. Since the insulating insulating member 100 is manufactured using a vacuum forming process, all parts of the insulating insulating member 100 can be formed simultaneously, including the box body 10, the first limiting member 20, the second limiting member 30, and the flange 40. To facilitate demolding, the through holes 110 are all provided on the bottom wall 11.

[0043] The insulating insulating component 100 in this embodiment is prepared by vacuum forming, thus forming an extremely thin box component that acts as an insulating film. The molds used in vacuum forming are inexpensive, the production cycle is short, and the price of the finished product is even lower than that of thermally conductive silicone cloth. Its easy-to-operate characteristics also make it suitable for mass production, thus effectively reducing production costs, improving production efficiency, and facilitating industrialization.

[0044] Figure 6 This is an exploded view of a magnetic device according to an embodiment of the present invention. Figure 6 As shown, one embodiment of this application also provides a magnetic device, including a magnetic component 200, a heat sink 300 (i.e., the mounting component described above), a heat-conducting medium, and an insulating isolation member 100 as described in any of the above embodiments. The heat sink 300 is provided with a cavity 310 for accommodating the insulating isolation member 100, and the accommodating cavity 101 of the insulating isolation member 100 is used to accommodate the magnetic component 200. The heat-conducting medium injected into the gap between the magnetic component 200 and the insulating isolation member 100 flows from the through hole 110 into the gap between the insulating isolation member 100 and the heat sink 300, such that the space between the magnetic component 200 and the insulating isolation member 100, as well as the space between the insulating isolation member 100 and the heat sink 300, is filled with the heat-conducting medium.

[0045] The magnetic component 200 includes an electrically connected magnetic device 210 and a circuit board 220. The magnetic device 210 is located within the accommodating cavity 101, and the circuit board 220 is mounted on the side of the heat sink 300 with the recess 310 via fasteners 400. In this embodiment, the side of the heat sink 300 with the recess 310 has multiple mounting protrusions 320. The circuit board 220 overlaps the mounting protrusions 320, and each mounting protrusion 320 has threads so that the fasteners 400 can pass through mounting holes on the circuit board 220 and be screwed onto the mounting protrusions 320. The mounting protrusions 320 prevent the circuit board 220 from directly contacting the heat sink housing, which is beneficial for heat dissipation and isolation.

[0046] The distance between the aforementioned cavity 310 and the side wall 12 of the insulating isolator 100 can be set to be slightly greater than the protrusion height of the second limiting member 30, thereby facilitating the insertion of the insulating isolator 100 into the cavity 310.

[0047] Example 1 The insulating isolator 100 has a thickness of 0.2 mm and is made of PC sheet and vacuum forming process. The height of the first limiting protrusion 21 and the second limiting protrusion 31 is 1 mm. The distance between the side of the cavity 310 and the plane on the magnetic device 210 that is closest to the side of the cavity 310 is set to 2.5 mm. The thermally conductive medium is thermally conductive potting compound.

[0048] Comparative Example 1 The only difference between Comparative Example 1 and Example 1 is that the insulating isolation member 100 is not provided, and the distance between the side of the cavity 310 and the plane on the magnetic device 210 that is closest to the side of the cavity 310 is set to a safe distance of 6.7 mm.

[0049] Compared with Comparative Example 1, Example 1 can reduce the thickness of thermally conductive potting compound by about 4 mm on each side and bottom of the magnetic device 210, saving about 94 g of thermally conductive potting compound and saving 2 yuan in thermally conductive potting compound cost. Furthermore, the thermal resistance is reduced by 1 / 2, and the temperature of the magnetic device 210 is significantly reduced when it generates heat.

[0050] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An insulating insulating element (100), characterized in that, Made of insulating material and comprising: The box body (10) includes a bottom wall (11) and a side wall (12). The bottom wall (11) and the side wall (12) together form a receiving cavity (101) with an opening at the top. The receiving cavity (101) is used to accommodate the component to be isolated. At least one through hole (110) for the flow of heat-conducting medium is provided at the bottom wall (11) and / or the side wall (12). The through hole (110) is set at a preset position to ensure that the distance between the component to be isolated and the through hole (110) is greater than a preset value. The first limiting member (20) protrudes from the side of the bottom wall (11) away from the receiving cavity (101) and is used to limit the distance between the bottom wall (11) and the receiving cavity to be installed; The second limiting member (30) protrudes from the side of the sidewall (12) away from the receiving cavity (101) and is used to limit the distance between the sidewall (12) and the receiving cavity to be installed.

2. The insulating insulating element (100) according to claim 1, characterized in that, The thickness of the insulating spacer (100) is any value between 0.175 mm and 0.3 mm.

3. The insulating insulating element (100) according to claim 1, characterized in that, The first limiting member (20) includes a plurality of first limiting protrusions (21), and the second limiting member (30) includes a plurality of second limiting protrusions (31).

4. The insulating insulating member (100) according to claim 3, characterized in that, The first limiting protrusion (21) is a tapered protrusion that gradually narrows in the direction away from the bottom wall (11).

5. The insulating insulating member (100) according to claim 3, characterized in that, The second limiting protrusion (31) is a rib extending in a direction perpendicular to the bottom wall (11).

6. The insulating insulating member (100) according to claim 1, characterized in that, The sidewall (12) has a flange (40) at one end away from the bottom wall (11), and the flange (40) protrudes from the sidewall (12) in a direction away from the receiving cavity (101).

7. The insulating insulating member (100) according to claim 6, characterized in that, The flange (40) includes a flat plate portion (41) connected to the side wall (12) on one side, and a flange (42) connected to the side of the flat plate portion (41) away from the side wall (12), the flange (42) extending from the flat plate portion (41) toward the bottom wall (11).

8. The insulating separator (100) according to any one of claims 1-7, characterized in that, The insulating insulating element (100) is manufactured by vacuum forming.

9. A magnetic device, characterized in that, include: Insulating separator (100) as claimed in any one of claims 1-8; A radiator (300) having a cavity (310) for accommodating the insulating spacer (100). Magnetic component (200), the receiving cavity (101) of the insulating isolator (100) is used to receive the magnetic component (200). A thermally conductive medium is injected into the gap between the magnetic component (200) and the insulating isolator (100) through the through hole (110) into the gap between the insulating isolator (100) and the heat sink (300).

10. The magnetic device according to claim 9, characterized in that, The magnetic component (200) includes an electrically connected magnetic device (210) and a circuit board (220). The magnetic device (210) is located inside the accommodating cavity (101), and the circuit board (220) is covered by a fastener (400) on the side of the heat sink (300) where the cavity (310) is located.

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