Magnetic element structure and switching power supply
By arranging a cooling air duct between the housing and the cover of the magnetic component, combined with the use of heat conductive parts, the problem of low efficiency and high cost in heat dissipation of the existing magnetic component structure is solved, and a more efficient heat dissipation effect is achieved. and lower production costs.
Patent Information
- Application Number
- CN202420267065.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-02
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-02-02
AI Technical Summary
The existing magnetic component structures have problems of low efficiency and high cost in terms of heat dissipation, especially due to the accumulation of heat, which leads to reduced component working efficiency and shortened service life.
Effective heat dissipation of the magnetic device is achieved by arranging a cooling air duct between the housing and the cover of the magnetic component and using thermal conductive parts. The cooling air duct uses wind flow to drive heat dissipation, while the thermal conductive parts transfer heat by filling magnetic devices and the inner wall of the casing.
This solution significantly improves the heat dissipation effect of magnetic components, reduces production costs, while extending the service life of the components and increasing power density.
Smart Images
Figure CN222380382U_ABST
Abstract
Description
Technical Field
[0001] The utility model generally relates to the technical field of power supply production and manufacturing, and in particular to a magnetic element structure and a switching power supply. Background Art
[0002] With the rapid development of switching power supply technology in various application fields, the magnetic component structure, as a key component of the switching power supply, is also increasingly developing towards higher efficiency, higher power density, higher reliability and lower cost.
[0003] The existing magnetic component structure includes a metal shell and a magnetic device. The magnetic device is arranged in the metal shell. A certain safety distance needs to be met between the magnetic device and the metal shell. In addition, a large amount of heat is often generated when the magnetic device is working. If the magnetic device with severe heat generation cannot dissipate heat in time, it will not only affect the working efficiency of the magnetic device and the switching power supply, but also shorten the service life of the magnetic device.
[0004] In order to solve this problem, the prior art adopts the following methods:
[0005] The first method is to increase the size of the metal shell so that there is a certain distance between the metal shell and the magnetic device to meet the safety distance requirements. However, due to the increase in the size of the metal shell, more thermal conductive adhesive is needed to fill the gap between the metal shell and the magnetic device, which will not only increase the weight of the metal shell and the amount of adhesive used, but also extend the thermal path between the magnetic device and the metal shell, reduce the thermal conductivity, and significantly increase the cost.
[0006] The second method is to add insulating materials between the metal shell and the magnetic device to meet the safety distance requirements. However, insulating materials are generally poor thermal conductors, which affects the heat dissipation effect. If materials with better performance or higher temperature resistance are selected, the material cost will increase. Utility Model Content
[0007] The utility model provides a magnetic element structure and a switching power supply, which have good heat dissipation effect and low production cost.
[0008] According to the first aspect of the utility model, a magnetic element structure is provided, comprising: a shell, a cover plate and a magnetic device, wherein an opening is provided at one end of the shell; the cover plate is covered on the opening; the magnetic device is at least partially provided in the shell; wherein a heat dissipation duct is provided on one side of the magnetic device facing the cover plate and between the cover plate.
[0009] In some embodiments, the magnetic device includes a magnetic core and a winding, wherein the winding is wound on a magnetic column of the magnetic core; the cover plate includes a fixing portion, and the lead end of the winding is connected to the fixing portion; wherein the heat dissipation duct is arranged between the fixing portion and the magnetic device.
[0010] The fixing part is provided with a fixing hole, and the lead-out end of the winding is passed through the fixing hole. The fixing hole plays a role in fixing the free end of the coil, and can also guide the free end of the coil from the inner side of the cover plate to the outer side of the cover plate, playing a role in leading out the lead-out end of the winding. The space between the fixing part and the magnetic device is used as a heat dissipation duct, and the heat dissipation duct is in contact with the magnetic device, which can directly achieve the heat dissipation effect of the magnetic device.
[0011] In some embodiments, along the height direction of the housing, a bottom surface of the fixing portion is higher than a top surface of the magnetic device.
[0012] Compared with the prior art in which the cover plate directly fits the opening of the shell, the bottom surface of the fixing part is higher than the top surface of the magnetic device, which is equivalent to pulling the fixing part of the cover plate away from the shell by a certain distance, so that there is a certain height gap between the bottom surface of the fixing part and the top surface of the magnetic device, and the height gap is the heat dissipation channel. In this way, the structure of the shell and the cover plate is not changed, the cost is low, and the weight of the shell will not increase significantly, and the heat dissipation effect of the magnetic device can be achieved. At the same time, due to the height gap between the fixing part and the magnetic device, the distance between the lead end of the winding and the shell is also increased, which plays a role in extending the safety distance.
[0013] In some embodiments, the cover plate further includes a supporting portion, one end of which is disposed on the fixing portion and the other end of which is abutted against the magnetic device along the height direction of the shell; wherein the heat dissipation duct is disposed between the fixing portion, the supporting portion and the magnetic device.
[0014] The supporting part plays a role in supporting the fixing part to ensure the position stability of the fixing part. At the same time, the supporting part has a certain height, and the supporting part supports the fixing part to leave a height gap in the direction away from the magnetic device, thereby improving the heat dissipation path.
[0015] In some embodiments, a limiting groove is provided on a side of the support portion facing the magnetic device, and the limiting groove is used to limit the magnetic device.
[0016] With the cooperation of the limiting groove and the magnetic device, the cover plate is prevented from shifting relative to the housing, and the position stability between the cover plate and the magnetic device can be ensured.
[0017] In some embodiments, there are multiple supporting parts, and the heat dissipation duct is arranged between the fixing part, the magnetic device and two adjacent supporting parts.
[0018] Among them, the heat dissipation air duct is arranged between the fixing part, the magnetic device and two adjacent supporting parts, which increases the flow path of the wind in the heat dissipation channel, prolongs the contact time between the wind and the magnetic device, makes the wind contact in the heat dissipation channel of the magnetic device more sufficient, and further improves the heat dissipation effect.
[0019] In some of the embodiments, a heat conducting member is further included. The heat conducting member is disposed between the magnetic device and the shell and at least partially covers the magnetic device.
[0020] The heat conductor fills the inner wall of the magnetic device and the shell, so that the heat generated by the magnetic device is transferred to the shell through the heat conductor, and the shell then dissipates the heat to the outside, and the heat conductor plays a role in heat transfer. At this time, the part of the magnetic device located in the shell, that is, the lower part of the magnetic device, is cooled by the heat conductor and the shell, and the part of the magnetic device located outside the shell or the upper part of the magnetic device is cooled by the heat dissipation channel, ensuring that any part of the magnetic device can effectively dissipate heat. The combination of heat dissipation by heat conductor and air cooling is adopted to greatly increase the heat dissipation area and heat dissipation capacity of the magnetic component, and further improve the heat dissipation effect of the magnetic device.
[0021] In some embodiments, the heat conducting member is made of a flowable heat conducting material that is solidified.
[0022] The heat conductive member can be a thermal conductive adhesive. After the fixing parts of the magnetic device and the cover plate are installed, the magnetic device is placed in the shell, and then the thermal conductive adhesive is filled into the shell. The thermal conductive adhesive can fix the magnetic device and dissipate heat for the magnetic device.
[0023] In some embodiments, the magnetic device is in contact with an inner wall of the shell.
[0024] In other words, the size of the shell matches the size of the magnetic device, the size of the shell is not too large, the weight of the shell is reduced as much as possible to meet the lightweight requirements, and at the same time, the gap between the inner wall of the shell and the magnetic device is as small as possible, thereby reducing the amount of thermal conductive glue used for injection, saving the material cost of thermal conductive glue, and shortening the thermal path between the magnetic device and the shell, improving the thermal conductivity. By improving the thermal path and adding air cooling to the glue injection heat dissipation, the production cost of the entire magnetic component structure is reduced, thereby improving the production efficiency, power density and reliability of the magnetic component structure.
[0025] In some embodiments, there are multiple magnetic devices and multiple cover plates, and the multiple magnetic devices and the multiple cover plates are arranged in one-to-one correspondence, and the heat dissipation ducts corresponding to two adjacent magnetic devices are connected to each other.
[0026] In this way, if one of the heat dissipation channels is ventilated, heat dissipation of multiple magnetic components can be achieved at the same time, thereby improving heat dissipation efficiency.
[0027] According to the second aspect of the utility model, an embodiment of the utility model further provides a switching power supply, comprising the above-mentioned magnetic element structure.
[0028] An embodiment of the utility model has the following advantages or beneficial effects:
[0029] This embodiment provides a magnetic element structure, in which the cover plate serves to block the opening, so that the shell and the cover plate form a relatively sealed overall structure. The shell and the cover plate serve to protect and isolate the magnetic device. By setting a heat dissipation duct between the magnetic device and the cover plate, air can be blown or sucked in the heat dissipation duct, and the flow of wind drives the heat generated by the magnetic device, thereby reducing the temperature around the magnetic device and other heat dissipation devices. In addition, the heat dissipation duct serves to isolate the magnetic device and the cover plate, and the safety distance can be appropriately extended.
[0030] This embodiment also provides a switching power supply, including the above-mentioned magnetic element structure, which can control the volume and weight of the entire switching power supply, ensure good heat dissipation effect, and thus further improve the power density. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to better understand the utility model, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the utility model. In addition, related elements or components may have different settings as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each of the drawings. By describing its example embodiments in detail with reference to the drawings, the above and other features and advantages of the utility model will become more apparent.
[0032] in:
[0033] Figure 1 The structure of the magnetic element structure provided by the first embodiment of the present invention is shown in FIG. Figure 1 ;
[0034] Figure 2 The structure of the magnetic element structure provided by the first embodiment of the present invention is shown in FIG. Figure 2 ;
[0035] Figure 3 The figure shows a half-section schematic diagram of the magnetic element structure provided by the first embodiment of the utility model;
[0036] Figure 4 The figure shows the matching diagram of the cover plate and the magnetic device in the magnetic element structure provided in the first embodiment of the utility model;
[0037] Figure 5 The figure shows a schematic diagram of the structure of the cover plate in the magnetic element structure provided in the first embodiment of the present utility model;
[0038] Figure 6 Shown is a schematic structural diagram of a magnetic element structure provided in the second embodiment of the present utility model.
[0039] The reference numerals are described as follows:
[0040] 1. Shell; 2. Cover; 3. Magnetic device; 4. Cooling duct; 5. Adapter;
[0041] 21. fixing part; 22. supporting part; 221. limiting groove;
[0042] 31. Magnetic core; 32. Winding; 321. Lead end. DETAILED DESCRIPTION
[0043] The following will be combined with the drawings in the example embodiments of the utility model to clearly and completely describe the technical solutions in the example embodiments of the utility model. The example embodiments described herein are only for illustrative purposes and are not intended to limit the scope of protection of the utility model. Therefore, it should be understood that various modifications and changes can be made to the example embodiments without departing from the scope of protection of the utility model.
[0044] In the description of the present invention, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more; the term "and / or" includes any and all combinations of one or more associated listed items. In particular, reference to "the / the" object or "an" object is also intended to indicate one of a possible plurality of such objects.
[0045] Unless otherwise specified or explained, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0046] Further, in the description of the present invention, it should be understood that the directional words such as "upper", "lower", "inner", "outer" and the like described in the exemplary embodiments of the present invention are described at the angles shown in the accompanying drawings and should not be understood as limitations on the exemplary embodiments of the present invention. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to another element (one or more) "upper", "lower", or "inner", "outer", it can not only be directly connected to the other (one or more) elements "upper", "lower", or "inner", "outer", but can also be indirectly connected to the other (one or more) elements "upper", "lower", "inner", "outer" through an intermediate element.
[0047] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.
[0048] This embodiment provides a magnetic element structure, such as Figure 1-Figure 3 As shown, the magnetic element structure includes a shell 1, a cover plate 2 and a magnetic device 3. An opening is provided at one end of the shell 1, and the cover plate 2 is provided to cover the opening. The cover plate 2 plays a role in blocking the opening, so that the shell 1 and the cover plate 2 form a relatively sealed overall structure. There is a receiving cavity between the shell 1 and the cover plate 2, and the magnetic device 3 is at least partially provided in the receiving cavity. The receiving cavity provides a receiving space for the magnetic device 3 and plays a role in protecting and isolating the magnetic device 3.
[0049] If the size of the shell 1 is relatively large, the distance between the inner wall of the shell 1 and the magnetic device 3 is relatively large. Although the safety distance requirement can be met, the weight of the shell 1 increases and the heat conduction path between the magnetic device 3 and the shell 1 is lengthened, affecting the heat dissipation effect, resulting in the inability to take into account both the safety distance and the heat dissipation requirements.
[0050] To solve this problem, Figure 1-Figure 3 As shown, a heat dissipation duct 4 is provided between the magnetic device 3 provided in this embodiment and the cover plate 2 on one side thereof.
[0051] By setting a heat dissipation duct 4 between the magnetic device 3 and the cover plate 2, the heat dissipation duct 4 can blow or suck air, and the flow of wind drives the heat generated by the magnetic device 3, thereby reducing the temperature around the magnetic device 3 and other heat dissipation devices. In addition, the heat dissipation duct 4 plays a role in isolating the magnetic device 3 and the cover plate 2, and the safety distance can be appropriately extended.
[0052] In one embodiment, Figure 3 As shown, the magnetic device 3 includes a magnetic core 31 and a winding 32, and the winding 32 is wound on the magnetic column of the magnetic core 31. Among them, the winding 32 can be a coil, and the coil is directly wound on the magnetic column of the magnetic core 31. The winding 32 can also include a winding frame and a coil, and the magnetic column of the magnetic core 31 is passed through the winding frame, and the coil is wound on the winding frame. The winding frame provides a winding position for the coil and can carry the coil. It can be understood that the lead-out end 321 of the winding 32 is the free end of the coil, which is used to be electrically connected to an external power supply to realize the on and off of the magnetic device 3.
[0053] In one embodiment, Figure 3 As shown, the cover plate 2 includes a fixing portion 21, and the lead-out end 321 of the winding 32 is connected to the fixing portion 21, and the fixing portion 21 provides a fixing position for the lead-out end 321 of the winding 32. Specifically, the fixing portion 21 is provided with a fixing hole, and the lead-out end 321 of the winding 32 is passed through the fixing hole, and the fixing hole can fix the lead-out end of the coil, and at the same time, the free end of the coil can be guided from the inner side of the cover plate 2 to the outer side of the cover plate 2, so as to lead out the lead-out end 321 of the winding 32.
[0054] The heat dissipation duct 4 is disposed between the fixing portion 21 and the magnetic device 3. The space between the fixing portion 21 and the magnetic device 3 is used as the heat dissipation duct 4, and the heat dissipation duct 4 and the magnetic device 3 are in contact, so that the heat dissipation of the magnetic device 3 can be directly realized.
[0055] It should be particularly noted that the part of the magnetic device 3 that forms the heat dissipation duct 4 may be the magnetic core 31, the winding 32 or other mechanical components that may exist on the magnetic device 3. This embodiment does not limit the specific structure of the heat dissipation duct 4 formed by the magnetic device 3, and can be adjusted according to the actual specific structure of the magnetic device 3.
[0056] In one embodiment, along the height direction of the housing 1, the bottom surface of the fixing portion 21 is higher than the top surface of the magnetic device 3. The height direction along the housing 1 is indicated by the Z direction.
[0057] Compared with the prior art in which the cover plate 2 directly fits the opening of the housing 1, the bottom surface of the fixing portion 21 is higher than the top surface of the magnetic device 3, which is equivalent to pulling the fixing portion 21 of the cover plate 2 away from the housing 1 by a certain distance, so that there is a certain height space between the bottom surface of the fixing portion 21 and the top surface of the magnetic device 3, and the height space can serve as a heat dissipation duct 4. In this way, the structure of the housing 1 and the cover plate 2 is not changed, the modification cost is relatively low, and the weight of the housing 1 will not increase significantly, and the heat dissipation effect of the magnetic device 3 can be achieved. At the same time, due to the height space between the fixing portion 21 and the magnetic device 3, the distance between the lead end 321 of the winding 32 and the housing 1 is also increased, which plays a role in extending the safety distance.
[0058] In one embodiment, Figure 3-Figure 4 As shown, the cover plate 2 further includes a support portion 22. Along the height direction of the housing 1, one end of the support portion 22 is disposed on the fixing portion 21, and the other end is in contact with the magnetic device 3. The support portion 22 supports the fixing portion 21 to ensure the position stability of the fixing portion 21. At the same time, the support portion 22 has a certain height, and the support portion 22 supports the fixing portion 21 to rise a certain height distance in the direction away from the magnetic device 3, thereby improving the heat dissipation path.
[0059] The heat dissipation duct 4 is arranged between the fixing part 21, the supporting part 22 and the magnetic device 3. The space between the fixing part 21, the supporting part 22 and the magnetic device 3 is used as the heat dissipation duct 4, which has a simple structure, an ingenious design and a relatively low production cost. At the same time, the heat dissipation duct 4 and the magnetic device 3 can be in direct contact, thereby improving the heat dissipation effect of the magnetic device 3.
[0060] In one embodiment, Figure 4-Figure 5 As shown, a limiting groove 221 is provided on one side of the support portion 22 facing the magnetic device 3, and the limiting groove 221 is used to limit the magnetic device 3. Under the cooperation of the limiting groove 221 and the magnetic device 3, the cover plate 2 is prevented from moving relative to the housing 1, and the position stability between the cover plate 2 and the magnetic device 3 can also be ensured.
[0061] In one embodiment, Figure 4-Figure 5 As shown, there are multiple supporting parts 22, and the multiple supporting parts 22 can be arranged along the length direction and / or width direction of the fixing part 21. The fixing part 21 is supported by multiple supporting parts 22 to improve the support stability and balance of the fixing part 21. The length direction is marked by the X direction, and the width direction is marked by the Y direction. The X direction, the Y direction and the Z direction are perpendicular to each other. The X direction, the Y direction and the Z direction only represent the spatial direction and have no substantial meaning.
[0062] Among them, the heat dissipation duct 4 is arranged between the fixing part 21, the magnetic device 3 and two adjacent supporting parts 22, which increases the flow path of the wind in the heat dissipation duct 4, prolongs the contact time between the wind and the magnetic device 3, makes the magnetic device 3 and the heat dissipation duct 4 contact more fully, and further improves the heat dissipation effect.
[0063] Specifically, there may be a plurality of magnetic devices 3 , and the support portion 22 is disposed between two adjacent magnetic devices 3 . The support portion 22 also serves to isolate the two adjacent magnetic devices 3 .
[0064] For example, the number of magnetic devices 3 provided in this embodiment is three, and the three magnetic devices 3 are arranged in parallel and spaced apart, and nine or ten support portions 22 are arranged along the edge of the fixing portion 21. The structures of the support portions 22 can be the same or different, and the four support portions 22 located at the four corners of the fixing portion 21 have similar structures, and the limiting grooves 221 of the four support portions 22 can be L-shaped structures to limit the four top corners of the magnetic device 3. The support portion 22 located between two adjacent magnetic devices 3 can have two limiting grooves 221, and the two limiting grooves 221 can limit the two magnetic devices 3 respectively, playing the role of bilateral limiting.
[0065] In one embodiment, the magnetic element structure further includes a heat conductive member, which is disposed between the magnetic device 3 and the housing 1 and at least partially covers the magnetic device 3 .
[0066] The heat conducting member fills the inner wall of the magnetic device 3 and the shell 1, so that the heat generated by the magnetic device 3 is transferred to the shell 1 through the heat conducting member, and the shell 1 then dissipates the heat to the outside, and the heat conducting member plays a role in heat transfer. At this time, the part of the magnetic device 3 located in the shell 1, that is, the lower half of the magnetic device 3, is cooled by the heat conducting member and the shell 1, and the part of the magnetic device 3 located outside the shell 1 or the upper half of the magnetic device 3 is cooled by the heat dissipation duct 4, ensuring that any part of the magnetic device 3 can effectively dissipate heat. The combination of heat dissipation by the heat conducting member and air cooling is adopted to greatly increase the heat dissipation area and heat dissipation capacity of the magnetic element, and further improve the heat dissipation effect of the magnetic device 3.
[0067] In one embodiment, the heat conducting member is made of a flowable heat conducting material that is solidified.
[0068] Among them, the heat conductive part can also be a thermal conductive glue. After the magnetic device 3 and the fixing part 21 of the cover plate 2 are installed, the magnetic device 3 is placed in the shell 1, and then the thermal conductive glue is filled into the shell 1. The thermal conductive glue can fix the magnetic device 3 and realize the heat dissipation of the magnetic device 3.
[0069] The thermal conductivity of common insulating materials such as Mylar tape is about 0.1W / m·k to 0.15W / m·k, while the thermal conductivity of thermal conductive adhesive is generally greater than 0.5W / m·k, for example 2W / m·k, which improves the heat dissipation effect of the magnetic device 3 .
[0070] In one embodiment, the magnetic device 3 is in close contact with the inner wall of the housing 1 .
[0071] In other words, the size of the shell 1 matches the size of the magnetic device 3, the size of the shell 1 is not too large, and the weight of the shell 1 is reduced as much as possible to meet the lightweight requirements. At the same time, the gap between the inner wall of the shell 1 and the magnetic device 3 is as small as possible, thereby reducing the amount of thermal conductive glue, saving the material cost of the thermal conductive glue, and shortening the thermal path between the magnetic device 3 and the shell 1, thereby improving the thermal conductivity. By improving the thermal path and adding air cooling to the glue pouring heat dissipation, the production cost of the entire magnetic component structure is reduced, thereby improving the production efficiency, power density and reliability of the magnetic component structure.
[0072] It should be particularly noted that the magnetic device 3 and the inner wall of the shell 1 are in contact with each other, which does not mean that every position of the inner wall of the shell 1 is in contact with and in contact with the magnetic device 3. Instead, the relatively protruding part of the magnetic device 3 is in contact with the inner wall of the shell 1, and there is a certain gap between the relatively recessed part of the magnetic device 3 and the inner wall of the shell 1. The thermal conductive adhesive can be filled into the gap between the magnetic device 3 and the shell 1. Therefore, there is no contradiction between the magnetic device 3 and the inner wall of the shell 1 being in contact with each other and the thermal conductive adhesive being able to be filled into the magnetic device 3 and the shell 1.
[0073] This embodiment also provides a switching power supply, including the above-mentioned magnetic element structure. The magnetic element structure can be used to control the volume and weight of the switching power supply, ensure good heat dissipation effect, and thus further improve the power density.
[0074] Embodiment 2
[0075] This embodiment is similar to the first embodiment, and the only difference is the number of magnetic devices 3 and the structure of the cover plate 2 .
[0076] like Figure 6 As shown, the number of magnetic devices 3 and cover plates 2 provided in this embodiment is multiple, and multiple magnetic devices 3 and multiple cover plates 2 are arranged one by one, and the heat dissipation ducts 4 corresponding to two adjacent magnetic devices 3 are interconnected. In this way, if one of the heat dissipation ducts 4 is ventilated, the heat dissipation of multiple magnetic devices 3 can be achieved at the same time, thereby improving the heat dissipation efficiency.
[0077] Among them, that is, along the extension direction of the heat dissipation duct 4, the multiple magnetic devices 3 can be arranged according to a certain rule. For example, the multiple magnetic devices 3 can be arranged in a straight line or in an array.
[0078] In one embodiment, the magnetic element structure also includes an adapter 5 and a PCB board (not shown in the figure). The adapter 5 is arranged on the side of the cover 2 away from the shell 1. The adapter 5 is arranged between the cover 2 and the PCB board. The adapter 5 plays a role of intermediate transfer. After the magnetic device 3 at least partially passes through the cover 2, it is electrically connected to the PCB board through the adapter 5, so that the PCB board can control the opening and closing of the magnetic device 3.
[0079] It should be noted that the magnetic element structure shown in the drawings and described in this specification is only an example of the principle of the present invention. It should be clearly understood by those skilled in the art that the principle of the present invention is not limited to any details or any components of the device shown in the drawings or described in the specification.
[0080] It should be understood that the utility model does not limit its application to the detailed structure and arrangement of the components proposed in this specification. The utility model can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned deformation forms and modified forms fall within the scope of the utility model. It should be understood that the utility model disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the utility model. The embodiments described in this specification illustrate the best known methods for implementing the utility model and will enable those skilled in the art to utilize the utility model.
[0081] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variation, use, or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and example embodiments are to be considered as exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.
[0082] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of the present invention is limited only by the appended claims.
Claims
1. A magnetic element structure, characterized in that: include: A shell, one end of which is provided with an opening; A cover plate, covering the opening; a magnetic device, wherein the magnetic device is at least partially disposed in the housing; Wherein, a heat dissipation duct is arranged between the side of the magnetic device facing the cover plate and the cover plate.
2. The magnetic element structure according to claim 1, characterized in that: The magnetic device comprises a magnetic core and a winding, wherein the winding is wound on a magnetic column of the magnetic core; The cover plate includes a fixing portion, and the lead-out end of the winding is connected to the fixing portion; Wherein, the heat dissipation duct is arranged between the fixing portion and the magnetic device.
3. The magnetic element structure according to claim 2, characterized in that: Along the height direction of the housing, the bottom surface of the fixing portion is higher than the top surface of the magnetic device.
4. The magnetic element structure according to claim 2, characterized in that: The cover plate further comprises a supporting portion, along the height direction of the housing, one end of the supporting portion is arranged on the fixing portion, and the other end abuts against the magnetic device; Wherein, the heat dissipation duct is arranged between the fixing part, the supporting part and the magnetic device.
5. The magnetic element structure according to claim 4, characterized in that: A limiting groove is provided on one side of the support portion facing the magnetic device, and the limiting groove is used for limiting the magnetic device.
6. The magnetic element structure according to claim 4, characterized in that: There are multiple supporting parts, and the heat dissipation duct is arranged between the fixing part, the magnetic device and two adjacent supporting parts.
7. The magnetic element structure according to claim 1, characterized in that: It also includes a heat conducting member, which is disposed between the magnetic device and the shell and at least partially covers the magnetic device.
8. The magnetic element structure according to claim 7, characterized in that: The heat conducting member is made of a flowable heat conducting material which is solidified.
9. The magnetic element structure according to claim 7, characterized in that: The magnetic device is in contact with the inner wall of the shell.
10. The magnetic element structure according to any one of claims 1 to 9, characterized in that: There are a plurality of magnetic devices and a plurality of cover plates, and the plurality of magnetic devices and the plurality of cover plates are arranged in one-to-one correspondence, and the heat dissipation ducts corresponding to two adjacent magnetic devices are connected to each other.
11. A switching power supply, characterized in that: The invention comprises the magnetic element structure as described in any one of claims 1 to 10.