Magnetic device heat dissipation shielding structure and magnetic device with shielding function

Abstract

The utility model relates to a heat dissipation shielding structure of a magnetic device. The heat dissipation shielding structure comprises a glue pouring box, the magnetic device, a shielding cover plate, an insulating cover plate and a mounting plate, the glue filling box is provided with an accommodating space for accommodating the magnetic device, the magnetic device is fixed on the mounting plate, the insulating cover plate and the shielding cover plate are sequentially arranged between the mounting plate and the magnetic device from top to bottom, and the accommodating space is filled with a pouring sealant. The utility model also relates to a magnetic device with a shielding function. According to the utility model, the electromagnetic compatibility can be obviously improved while the efficient heat dissipation is not influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of magnetic device, more specifically, relate to a magnetic device heat dissipation shielding structure and the magnetic device with shielding function. BACKGROUND

[0002] Magnetic device, for example transformer, inductance usually sealed to the potting box carries out heat dissipation, however in this scheme, the potting box of magnetic device needs to keep the installation window of magnetic device, and the high frequency magnetic device works and can produce powerful electromagnetic field, and electromagnetic interference can radiate to the outside space through the installation window of potting box, thereby causing serious electro magnetic compatibility (Electro Magnetic Compatibility, EMC) problem. SUMMARY

[0003] The utility model solves the technical problem, in view of the above -mentioned defects of prior art, provide a kind of magnetic device heat dissipation shielding structure, it can significantly improve electromagnetic compatibility while not affecting efficient heat dissipation.

[0004] The utility model discloses a kind of magnetic device heat dissipation shielding structures, including potting box, shielding cover plate, insulating cover plate and mounting plate;The potting box is provided with the accommodation space for accommodating magnetic device, the insulating cover plate and the shielding cover plate are sequentially arranged between the mounting plate and the magnetic device from top to bottom, and the accommodation space is filled with potting sealant.

[0005] In the magnetic device heat dissipation shielding structure described in the utility model, the shielding cover plate includes the shielding plate horizontally attached to the mounting surface of the magnetic device, and the shielding folded edge extending from the edge of the shielding plate towards the magnetic device, the shielding folded edge is clamped between the side wall of the magnetic device and the side wall of the accommodation space, and the shielding plate is clamped between the mounting surface of the magnetic device and the side surface of the insulating cover plate towards the magnetic device.

[0006] In the magnetic device heat dissipation shielding structure described in the utility model, a plurality of accommodation spaces are formed on the potting box, one magnetic device is accommodated in each accommodation space, each accommodation space is surrounded by four side walls and a bottom wall, and adjacent accommodation spaces share a side wall.

[0007] In the magnetic device heat dissipation shielding structure of this utility model, the shielding cover includes a shielding plate that horizontally fits the mounting surfaces of all the magnetic devices, a first shielding fold extending from the first short side of the shielding plate toward the first magnetic device, a second shielding fold extending from the second short side of the shielding plate toward the second magnetic device, and a third shielding fold extending from the long side of the shielding plate toward all the magnetic devices; wherein the first magnetic device is the magnetic device adjacent to the first short side, the second magnetic device is the magnetic device adjacent to the second short side, and the remaining magnetic devices are located between the first magnetic device and the second magnetic device.

[0008] In the magnetic device heat dissipation shielding structure of this utility model, the first shielding fold is engaged between the first side wall of the first magnetic device and the first side wall of the first accommodating space, and the second shielding fold is engaged between the first side wall of the second magnetic device and the first side wall of the second accommodating space; the first accommodating space accommodates the first magnetic device, and the second accommodating space accommodates the second magnetic device.

[0009] In the magnetic device heat dissipation shielding structure of this utility model, the third shielding fold includes multiple fold segments, and the number of fold segments, the number of accommodating spaces, and the number of magnetic devices are the same; each fold segment is correspondingly engaged between the second sidewall of a magnetic device and the second sidewall of the accommodating space in which it is located.

[0010] In the magnetic device heat dissipation shielding structure of this utility model, a clearance groove is formed between two adjacent folded edge segments to avoid the common sidewall of the adjacent accommodating space, and a mounting edge is provided on the mounting plate at the position corresponding to the shielding folded edge.

[0011] In the heat dissipation shielding structure for magnetic devices described in this utility model, a first pin clearance groove is provided on the shielding plate opposite to the mounting pin of the magnetic device, a second pin clearance groove is provided on the insulating cover plate opposite to the mounting pin of the magnetic device, and a pin mounting groove is provided on the mounting plate opposite to the mounting pin of the magnetic device; the mounting pin of the magnetic device passes through the first pin clearance groove, the second pin clearance groove and the pin mounting groove in sequence, and is fixed to the mounting plate.

[0012] In the magnetic device heat dissipation shielding structure of this utility model, the first side of the insulating cover plate is attached to the shielding plate, and a plurality of reinforcing ribs are provided on the second side of the insulating cover plate facing the mounting plate.

[0013] In the magnetic device heat dissipation shielding structure described in this utility model, the magnetic device includes a transformer and an inductor.

[0014] The magnetic device heat dissipation shielding structure of the utility model has at least one accommodating space for accommodating the magnetic device on the glue filling box, fixes the magnetic device on the mounting plate, and sets the insulating cover plate and the shielding cover plate from top to bottom between the mounting plate and the magnetic device, can effectively shield the magnetic force lines radiated upwards by the magnetic device, fills the potting adhesive in the accommodating space, and can effectively dissipate heat, so that the magnetic device heat dissipation shielding structure of the utility model can significantly improve electromagnetic compatibility without affecting efficient heat dissipation.

[0015] The utility model also relates to a magnetic device with shielding function, including glue filling box, magnetic device body, shielding cover plate, insulating cover plate and mounting plate, the accommodating space for accommodating the magnetic device body is set up on the glue filling box, the magnetic device body is fixed on the mounting plate, the insulating cover plate and the shielding cover plate are sequentially set from top to bottom between the mounting plate and the magnetic device body, fill the potting adhesive in the accommodating space.

[0016] The magnetic device with shielding function of the utility model has at least one accommodating space for accommodating the magnetic device body on the glue filling box, fixes the magnetic device body on the mounting plate, and sets the insulating cover plate and the shielding cover plate from top to bottom between the mounting plate and the magnetic device body, can effectively shield the magnetic force lines radiated upwards by the magnetic device body, fills the potting adhesive in the accommodating space, and can effectively dissipate heat, so that the magnetic device with shielding function of the utility model can significantly improve electromagnetic compatibility without affecting efficient heat dissipation, and the assembly process is simplified and low in cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described below in combination with the drawings and examples, and the drawings are as follows:

[0018] Figure 1 It is the sectional view of the first preferred embodiment of the magnetic device heat dissipation shielding structure of the utility model,

[0019] Figure 2 It is the exploded schematic view of the second preferred embodiment of the magnetic device heat dissipation shielding structure of the utility model,

[0020] Figure 3 It is Figure 2 The structural schematic diagram of the preferred embodiment of the mounting plate and the insulating cover plate of the magnetic device heat dissipation shielding structure shown in the figure,

[0021] Figure 4 It is Figure 2 The structural schematic diagram of the preferred embodiment of the shielding cover plate of the magnetic device heat dissipation shielding structure shown in the figure,

[0022] Figure 5is a schematic diagram of the conductive emission result of the magnetic device heat dissipation shielding structure of the prior art;

[0023] Figure 6 is Figure 2 a schematic diagram of the conductive emission result of the magnetic device heat dissipation shielding structure. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will combine the drawings and examples to make the utility model further detailed description. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0025] Figure 1 is a sectional view of the first preferred embodiment of the magnetic device heat dissipation shielding structure of the utility model. As Figure 1 shown, the magnetic device heat dissipation shielding structure of the utility model comprises a glue filling box 10, a shielding cover plate 30, an insulating cover plate 40 and a mounting plate 50. As Figure 1 shown, the glue filling box 10 is provided with a containing space for containing a magnetic device 20, and the insulating cover plate 40 and the shielding cover plate 30 are arranged between the mounting plate 50 and the magnetic device 20 from top to bottom. The containing space is filled with potting glue 60.

[0026] In the preferred embodiment of the utility model, the magnetic device 20 can be a transformer or an inductor. The shape of the containing space matches the shape of the magnetic device. In the preferred embodiment of the utility model, one or more containing spaces can be arranged on the glue filling box 10, so as to contain one or more magnetic devices 20. Preferably, the magnetic device 20 can be fixed on the mounting plate 50 by any suitable means.

[0027] In further preferred embodiments of the utility model, the glue filling box 10 can be provided with a containing space for containing a magnetic device 20. At this time, the glue filling box 10 comprises four side walls and a bottom wall forming the containing space. The four side walls of the magnetic device 20 correspondingly face the four side walls of the glue filling box 10. The shielding cover plate 30 comprises a shielding plate horizontally adhering to the mounting surface of the magnetic device 20, a first shielding folded edge extending from the first edge of the shielding plate towards the glue filling box 10 (containing space), a second shielding folded edge extending from the second edge of the shielding plate towards the glue filling box 10 (containing space), and a third shielding folded edge extending from the third edge of the shielding plate towards the glue filling box 10 (containing space); the first shielding folded edge is clamped between the first side wall of the magnetic device 20 and the first side wall of the glue filling box 10 (containing space), the second shielding folded edge is clamped between the second side wall of the magnetic device 20 and the second side wall of the glue filling box 10 (containing space), and the third shielding folded edge is clamped between the third side wall of the magnetic device 20 and the third side wall of the glue filling box 10 (containing space). The shielding plate is clamped between the mounting surface of the magnetic device 20 and the first side surface of the insulating cover plate 40 facing the magnetic device 20. By adopting such a setting mode, the mounting surface and at least three side walls of the magnetic device 20 are shielded by the shielding cover plate 30, so that a very good shielding effect can be achieved.

[0028] In another preferred embodiment of the utility model, only the shielding plate can be provided, or the shielding plate and any one or any two of the first shielding folded edge, the second shielding folded edge and the third shielding folded edge can be provided, and a good shielding function can be achieved. These all fall within the protection scope of the utility model.

[0029] The magnetic device heat dissipation shielding structure is characterized in that at least one containing space for containing a magnetic device is arranged on a glue filling box, the magnetic device is fixed on a mounting plate, and an insulating cover plate and a shielding cover plate are arranged from top to bottom between the mounting plate and the magnetic device, so that the magnetic force lines radiated upwards by the magnetic device can be effectively shielded, the containing space is filled with potting adhesive, and heat can be effectively dissipated, so that the magnetic device heat dissipation shielding structure can significantly improve electromagnetic compatibility without affecting efficient heat dissipation, and the assembly process is simplified and the cost is low.

[0030] Figure 2 is an exploded schematic view of a second preferred embodiment of the magnetic device heat dissipation shielding structure of the utility model. Figure 3 is Figure 2 is a structural schematic view of a preferred embodiment of a mounting plate and an insulating cover plate of the magnetic device heat dissipation shielding structure. Figure 4 isFigure 2 Structure diagram of the preferred embodiment of the shielding cover plate of the magnetic device heat dissipation shielding structure.

[0031] The magnetic device heat dissipation shielding structure comprises a glue filling box 10, magnetic devices 21, 22, 23, a shielding cover plate 30, an insulating cover plate 40 and a mounting plate 50. Figure 1 As shown, the glue filling box 10 is provided with accommodating spaces 11, 12, 13. The magnetic devices 21, 22, 23 are all fixed on the mounting plate 50, and the insulating cover plate 40 and the shielding cover plate 30 are arranged between the mounting plate 50 and the magnetic devices 21, 22, 23 from top to bottom. The accommodating space 11 is used for accommodating the magnetic device 21, the accommodating space 12 is used for accommodating the magnetic device 22, and the accommodating space 13 is used for accommodating the magnetic device 23. Figures 2-4 In the preferred embodiment shown, three accommodating spaces 11, 12, 13 are formed on the glue filling box 10, so that three magnetic devices 21, 22, 23 can be accommodated. Those skilled in the art know that more or fewer accommodating spaces can be provided on the glue filling box 10 according to the design of the utility model, so as to accommodate different numbers of magnetic devices.

[0032] In the preferred embodiment shown, Figures 2-4 In the preferred embodiment shown, each accommodating space 11, 12, 13 is surrounded by four side walls and a bottom wall. The bottom walls of all the accommodating spaces 11, 12, 13 can be integrally formed or separately designed. Adjacent accommodating spaces share a side wall. Of course, each accommodating space can also be designed to have a separate side wall and bottom wall, which falls within the protection scope of the utility model.

[0033] As shown, Figure 4 The shielding cover plate 30 comprises a shielding plate 31 horizontally adhering to the mounting surface of all the magnetic devices 21, 22, 23, a shielding folded edge 32 extending from a first short side of the shielding plate 31 towards the magnetic device 21, a shielding folded edge 33 extending from a second short side of the shielding plate 31 towards the magnetic device 23, and a shielding folded edge 34 extending from a long side of the shielding plate 31 towards all the magnetic devices 21, 22, 23. As shown, Figure 2As shown, the shielding fold 32 is clamped between the first side wall of the magnetic device 21 and the first side wall of the accommodating space 11, and the shielding fold 33 is clamped between the first side wall of the magnetic device 23 and the first side wall of the accommodating space 13. The shielding fold 34 includes a plurality of fold segments 341, 342 and 343, the number of the fold segments 341, 342 and 343 is same as the number of the accommodating spaces 11, 12 and 13 and the number of the magnetic devices 21, 22 and 23; each fold segment 341, 342 and 343 is correspondingly clamped between the second side wall of one of the magnetic devices 21, 22, 23 and the second side wall of the accommodating space 11, 12 and 13 where the magnetic device is located. As shown, Figure 2 As shown, the fold segment 341 is correspondingly clamped between the second side wall of the magnetic device 21 and the second side wall of the accommodating space 11 where the magnetic device is located. The fold segment 342 is correspondingly clamped between the second side wall of the magnetic device 22 and the second side wall of the accommodating space 12 where the magnetic device is located. The fold segment 343 is correspondingly clamped between the second side wall of the magnetic device 23 and the second side wall of the accommodating space 13 where the magnetic device is located. The avoiding slot 344 is formed between two adjacent fold segments for avoiding the common side wall of the adjacent accommodating spaces.

[0034] As shown further, Figure 4 As shown, the first pin avoiding slot 311 is arranged on the shielding plate 31 opposite to the position of the mounting pin of each of the magnetic devices 21-23. As shown, Figure 4 As shown, the first pin avoiding slot 311 can be a closed rectangular slot or an open strip slot, and the position, number and shape thereof can be designed according to the position, number and shape of the mounting pin of the magnetic device.

[0035] As shown further, Figure 3 As shown, the mounting folds 51, 52 and 53 are correspondingly arranged on the mounting plate 50 opposite to the positions of the fold segments 341, 342 and 343. As shown further, Figure 3 As shown, the first side of the insulating cover plate 40 is attached to the shielding plate 31, and a plurality of reinforcing ribs 41 are arranged on the second side of the insulating cover plate 40 facing the mounting plate 50. These reinforcing ribs 41 form reinforcing rib frames with different shapes. The second pin avoiding slots 42 are arranged on the insulating cover plate 40 opposite to the positions of the mounting pins of the magnetic devices 20. These second pin avoiding slots 42 are located in the center of each reinforcing rib frame. The mounting pins 211 of the magnetic devices 21, 22 and 23 pass through the first pin avoiding slots 311 and the second pin avoiding slots 42 in sequence and are fixed to the mounting plate 50. Correspondingly, the mounting plate 50 is also provided with pin mounting slots 54. The magnetic devices 21, 22 and 23 can include transformers and inductors.

[0036] Further as Figure 2 The first end of the glue filling box 10 is provided with a limiting column 15 for limiting the magnetic device, the first end of the insulating cover plate 40 is provided with a fixing column 42, thereby being fixed with the fixing hole 51 on the mounting plate 50, the second end of the insulating cover plate 40 is provided with a mounting screw hole 43, and the position of the mounting screw hole 43 opposite to the mounting plate 50 is also provided with a mounting screw hole 55, so that the insulating cover plate 40 and the mounting plate 50 can be further fixed by screws.

[0037] Figure 5 is a schematic diagram of the conductive emission result of the prior art magnetic device heat dissipation shielding structure. Figure 6 is Figure 2 is a schematic diagram of the conductive emission result of the magnetic device heat dissipation shielding structure. Figures 5-6 The principle and function of the magnetic device heat dissipation shielding structure of the utility model are described as follows.

[0038] In the magnetic device heat dissipation shielding structure, a containing space 11, 12, 13 is arranged on the glue filling box 10 for containing the magnetic devices 21, 22, 23, and the containing space 11, 12, 13 is filled with high-thermal-conductivity potting glue for heat conduction of the magnetic devices 21, 22, 23. The magnetic devices 21, 22, 23 are components in a circuit, participate in power conversion, and are the main source of electromagnetic interference. The insulating cover plate 40 and the shielding cover plate 30 are arranged between the mounting plate 50 and the magnetic devices 21, 22, 23 from top to bottom. The shielding plate 31 of the shielding cover plate 30 is horizontally attached to the mounting surface of all the magnetic devices 21, 22, 23, and the shielding folded edges 32, 33 and 34 are located between the magnetic devices 21, 22, 23 and the side walls of the containing space. Since the shielding plate 31 is horizontally attached to the mounting surface of all the magnetic devices 21, 22, 23, it can shield the electromagnetic interference from radiating into space. The shielding folded edges 32, 33 and 34 are located between the magnetic devices 21, 22, 23 and the side walls of the containing space 11, 12, 13 (glue filling box), which ensures sufficient contact between the shielding folded edges and the glue filling box and improves the shielding effect. The shielding cover plate 30 can be made of a metal plate, a magnetic material shielding plate or a composite shielding plate. The specific material used can be selected according to the frequency of the interference signal to be shielded, and the shielding cover plate 30 can be integrally formed or manufactured separately.

[0039] The insulation cover plate 40 is a cover plate made of insulation material, which has the effect of fixing the magnetic device and ensuring that the magnetic device meets the regulatory requirements. The mounting plate 50 is composed of a PCB material, and the magnetic device is welded to the mounting plate by welding, which has the effects of fixing the magnetic device and providing a circuit loop. The utility model utilizes the shielding cover plate to directly cut off the magnetic force lines radiated by the magnetic device to the upper circuit board, thereby cutting off the conducted emission interference to the PCB circuit and improving the EMC performance.

[0040] In Figure 2 In the magnetic device heat dissipation shielding structure shown, three magnetic devices are placed in a one-piece 3-slot (accommodation space) glue filling box for glue filling treatment. The three magnetic devices are simultaneously welded and assembled on the fixing plate 5, and the fixing plate 5 uses a PCB scheme. An insulation cover plate 4 is placed between the magnetic devices below the fixing plate 5, and a shielding cover plate 3 is located between the mounting surface of the magnetic device and the insulation cover plate 4, and the insulation cover plate 3 has a folded edge on the side, which ensures sufficient contact between the shielding plate and the glue filling box and improves the shielding effect. The conducted emission test results before and after the use of the shielding cover plate are shown in Figure 4 and Figure 5 As can be seen by comparison, the measured conducted emission index in the 7MHz-9MHz frequency band is reduced by more than 10dB, and a significant improvement effect is achieved.

[0041] The magnetic device heat dissipation shielding structure of the utility model sets at least one accommodation space for accommodating the magnetic device on the glue filling box, fixes the magnetic device on the mounting plate, and sets the insulation cover plate and the shielding cover plate from top to bottom between the mounting plate and the magnetic device, which can effectively shield the magnetic force lines radiated upward by the magnetic device. The accommodation space is filled with glue, which can effectively dissipate heat. Therefore, the magnetic device heat dissipation shielding structure of the utility model can significantly improve the electromagnetic compatibility without affecting efficient heat dissipation, and the assembly process is simplified and the cost is low.

[0042] The utility model further discloses a magnetic device with shielding function, which comprises a glue filling box 10, a magnetic device body (i.e. the aforementioned magnetic device 20), a shielding cover plate 30, an insulation cover plate 40 and a mounting plate 50. The glue filling box is provided with an accommodation space for accommodating the magnetic device body 20, the magnetic device body 20 is fixed on the mounting plate 50, the insulation cover plate 40 and the shielding cover plate 30 are sequentially arranged from top to bottom between the mounting plate 50 and the magnetic device body 20, and the accommodation space is filled with glue. Here, the magnetic device body 20 can refer to any known magnetic device.

[0043] Further, in the preferred embodiment, the glue filling box 10, the magnetic device body (i.e. the aforementioned magnetic device 20), the shielding cover plate 30, the insulation cover plate 40 and the mounting plate 50 can all be referred toFigures 1-4 The embodiments shown are configured and obtain the same beneficial effects, which are not repeated here.

[0044] The magnetic device with shielding function is implemented, at least one accommodating space for accommodating the magnetic device body is arranged on the glue filling box, the magnetic device body is fixed on the mounting plate, and the insulating cover plate and the shielding cover plate are arranged between the mounting plate and the magnetic device body from top to bottom, the magnetic force lines radiated upward by the magnetic device body can be effectively shielded, the potting adhesive is filled in the accommodating space, and heat dissipation can be effectively achieved, therefore, the magnetic device with shielding function can significantly improve electromagnetic compatibility without affecting efficient heat dissipation, and the assembly process is simplified and the cost is low.

[0045] Although the utility model is through specific embodiment instruction, the person skilled in the art should understand that, without departing from the scope of the utility model, various transformations and equivalent replacement of the utility model can be carried out.In addition, for specific situation or material, various modifications can be made to the utility model without departing from the scope of the utility model.Therefore, the utility model is not limited to the disclosed specific embodiments, and should include all the embodiments falling within the scope of the claims of the utility model.

[0046] The above is only the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A magnetic device heat dissipation shield structure, characterized by, The application relates to a magnetic device shielding structure, which comprises a glue filling box, a shielding cover plate, an insulating cover plate and a mounting plate; a containing space for containing magnetic devices is arranged on the glue filling box; the insulating cover plate and the shielding cover plate are sequentially arranged between the mounting plate and the magnetic devices from top to bottom; and glue is filled in the containing space.

2. The magnetic device heat dissipation shielding structure according to claim 1, wherein, The shielding cover plate comprises a shielding plate horizontally adhered to the mounting surface of the magnetic device and shielding folded edges extending from the edge of the shielding plate towards the magnetic device; the shielding folded edges are clamped between the side wall of the magnetic device and the side wall of the containing space; and the shielding plate is clamped between the mounting surface of the magnetic device and the side surface of the insulating cover plate towards the magnetic device.

3. The magnetic device heat dissipation shielding structure according to claim 1, wherein, A plurality of containing spaces are formed on the glue filling box, one magnetic device is contained in each containing space, each containing space is surrounded by four side walls and one bottom wall, and adjacent containing spaces share one side wall.

4. The magnetic device heat dissipation shielding structure according to claim 3, wherein, The shielding cover plate comprises a shielding plate horizontally adhered to the mounting surface of all the magnetic devices, a first shielding folded edge extending from the first short edge of the shielding plate towards the first magnetic device, a second shielding folded edge extending from the second short edge of the shielding plate towards the second magnetic device, and a third shielding folded edge extending from the long edge of the shielding plate towards all the magnetic devices; wherein the first magnetic device is the magnetic device adjacent to the first short edge, the second magnetic device is the magnetic device adjacent to the second short edge, and the rest of the magnetic devices are located between the first magnetic device and the second magnetic device.

5. The magnetic device heat dissipation shielding structure according to claim 4, wherein, The first shielding folded edge is clamped between the first side wall of the first magnetic device and the first side wall of the first containing space, and the second shielding folded edge is clamped between the first side wall of the second magnetic device and the first side wall of the second containing space; the first magnetic device is contained in the first containing space, and the second magnetic device is contained in the second containing space.

6. The magnetic device heat dissipation shielding structure according to claim 4, wherein, The third shielding folded edge comprises a plurality of folded edge segments, the number of the folded edge segments is the same as the number of the containing spaces and the number of the magnetic devices; each folded edge segment is clamped between the second side wall of one magnetic device and the second side wall of the containing space where the magnetic device is located.

7. The magnetic device heat dissipation shielding structure according to claim 6, wherein, An avoiding groove for avoiding the shared side wall of adjacent containing spaces is formed between two adjacent folded edge segments; and a mounting folded edge is arranged on the mounting plate in a position corresponding to the shielding folded edge.

8. The magnetic device heat dissipation shielding structure according to any one of claims 2, 4 to 7, wherein A first pin avoiding groove is arranged on the shielding plate in a position corresponding to the mounting pin of the magnetic device, a second pin avoiding groove is arranged on the insulating cover plate in a position corresponding to the mounting pin of the magnetic device, and a pin mounting groove is arranged on the mounting plate in a position corresponding to the mounting pin of the magnetic device; the mounting pin of the magnetic device sequentially passes through the first pin avoiding groove, the second pin avoiding groove and the pin mounting groove, and is fixed to the mounting plate.

9. The magnetic device heat dissipation shielding structure according to claim 8, wherein, The first side surface of the insulating cover plate is adhered to the shielding plate, and a plurality of reinforcing ribs are arranged on the second side surface of the insulating cover plate towards the mounting plate.

10. A magnetic device having a shielding function, characterized by comprising: a magnetic layer; a non-magnetic layer; and a magnetic layer having a shielding function according to any one of claims 1 to 8. It comprises a glue filling box, a magnetic device body, a shielding cover plate, an insulating cover plate and a mounting plate; the glue filling box is provided with a containing space for containing the magnetic device body, the magnetic device body is fixed on the mounting plate, the insulating cover plate and the shielding cover plate are sequentially arranged between the mounting plate and the magnetic device body from top to bottom, and the containing space is filled with potting glue.

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