inductor

Abstract

The utility model relates to the technical field of electric appliance element field, disclose an inductor, the inductor includes coil subassembly and sealing assembly. The sealing assembly is located coil subassembly outside for the sealing of coil subassembly, and sealing assembly includes first sealing piece and second sealing piece, and first sealing piece has magnetism. Through the sealing of coil subassembly by first sealing piece and second sealing piece, first sealing piece has the packaging effect, can improve the electromagnetic performance of inductor's whole still, and, first sealing piece and second sealing piece can all heat conduction, namely under the condition of guaranteeing inductor heat dissipation effect, improved the electromagnetic performance of inductor's whole.

Description

Technical Field

[0001] This utility model relates to the technical field of electrical components, and in particular to an inductor. Background Technology

[0002] As the power density of high-frequency power electronic devices (such as 5G communication base stations and new energy vehicle drive systems) continues to increase, inductors, as core energy storage components, face the dual challenges of optimizing electromagnetic performance and enhancing thermal management.

[0003] Existing technology typically uses common potting compound to encapsulate inductors, encapsulating the magnetic core and windings in common potting compound (such as epoxy resin potting compound) to improve the inductor's heat dissipation performance and prevent contact with the external environment. However, it does not address how to optimize the electromagnetic performance of the inductor, resulting in low electromagnetic performance of the inductor.

[0004] Therefore, there is an urgent need for an inductor to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an inductor to solve the problem of low electromagnetic performance of inductors in the prior art.

[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0007] Inductors, including:

[0008] Coil assembly;

[0009] Sealing components;

[0010] The sealing assembly is disposed outside the coil assembly and is used to seal the coil assembly. The sealing assembly includes a first sealing element and a second sealing element, wherein the first sealing element is magnetic.

[0011] Furthermore, the first seal and the second seal cooperate to form a receiving cavity, and the coil assembly is disposed within the receiving cavity.

[0012] Furthermore, a sealing groove is formed on one surface of the first sealing member, and the second sealing member is installed in the opening of the sealing groove and cooperates with the first sealing member to form the receiving cavity.

[0013] Furthermore, the shape of the sealing groove wall matches the shape of the coil assembly; and / or, the second seal has a contoured groove on its surface facing the coil assembly, the shape of the contoured groove matching the shape of the coil assembly.

[0014] Furthermore, the inductor also includes a sealed housing with an opening, wherein both the first seal and the second seal are located within the sealed housing.

[0015] Furthermore, the opening of the sealing groove is flush with the opening of the sealing shell, and the second sealing element is located inside the sealing groove and extends to the opening inside the sealing groove.

[0016] Furthermore, the opening of the sealing groove is located below the opening of the sealing housing, the second sealing element is located inside the sealing groove and extends to the opening of the sealing housing, and contacts the inner wall of the sealing housing.

[0017] Furthermore, the first sealing element includes a bottom sealing portion and a side sealing portion disposed on one side of the bottom sealing portion, and the connection between the bottom sealing portion and the side sealing portion is rounded.

[0018] Furthermore, the inductor also includes a sealed housing with an opening, wherein both the first seal and the second seal are located within the sealed housing;

[0019] The first sealing element includes four third sub-sealing elements, and the second sealing element includes a first sub-sealing element and a second sub-sealing element disposed opposite to each other. The four third sub-sealing elements, the first sub-sealing element and the second sub-sealing element cooperate with each other to form the receiving cavity.

[0020] Furthermore, two of the third sub-seals are disposed opposite each other in the length direction of the sealing housing, and two other third sub-seals are disposed opposite each other in the width direction of the sealing housing. The first sub-seal and the second sub-seal are disposed opposite each other in the height direction of the sealing housing. The two third sub-seals disposed opposite each other in the width direction of the sealing housing, together with the two third sub-seals disposed opposite each other in the length direction of the sealing housing, the first sub-seal, and the second sub-seal, cooperate with each other to form the receiving cavity.

[0021] Furthermore, the thermal conductivity of the first sub-seal is greater than that of the second sub-seal and less than that of the third sub-seal.

[0022] Furthermore, the third sub-seal is perpendicular to the first sub-seal.

[0023] Furthermore, the coil assembly includes a core and a coil, wherein the core has a rod-shaped structure and the coil is wound around the core.

[0024] The magnetic properties of the core rod are greater than those of the first sealing element.

[0025] Furthermore, the coil assembly is positioned horizontally relative to the sealing assembly.

[0026] Furthermore, the coil assembly is arranged longitudinally relative to the sealing assembly.

[0027] Furthermore, the coil assembly also includes a first insulating layer and a second insulating layer, wherein the first insulating layer wraps around the core and is located between the core and the coil, and the second insulating layer wraps around the coil.

[0028] Furthermore, the surface of the first seal facing the inner wall of the sealing housing has a protrusion; and / or, the surface of the second seal facing the inner wall of the sealing housing has a protrusion.

[0029] Furthermore, the first seal is a prefabricated part, and the second seal is potted and molded.

[0030] Furthermore, the sealing shell is made of aluminum.

[0031] Furthermore, the inductor also includes a cover plate, the first seal being formed at least at the bottom of the coil assembly and on opposite sides of the coil assembly, the second seal being formed between the first seal and the coil assembly, and the cover plate covering the upper part of the coil assembly and connected to the first seal.

[0032] The beneficial effects of this utility model are:

[0033] This invention provides an inductor comprising a coil assembly and a sealing assembly. The sealing assembly, located outside the coil assembly, seals the coil assembly and includes a first sealing element and a second sealing element. The first sealing element is magnetic. By using the first and second sealing elements to seal the coil assembly, the first sealing element serves both an encapsulation function and improves the overall electromagnetic performance of the inductor. Furthermore, both the first and second sealing elements are thermally conductive, thus improving the overall electromagnetic performance of the inductor while ensuring effective heat dissipation. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0035] Figure 1 This is a first structural schematic diagram of an inductor provided in an embodiment of the present invention;

[0036] Figure 2 This is an exploded view of an inductor provided in an embodiment of the present invention;

[0037] Figure 3 yes Figure 1 A cross-sectional schematic diagram;

[0038] Figure 4 This is a schematic diagram of the second structure of an inductor provided in one embodiment of the present invention;

[0039] Figure 5 yes Figure 4 The enlarged view at point A is shown below;

[0040] Figure 6 This is a schematic diagram of the third structure of an inductor provided in one embodiment of the present invention;

[0041] Figure 7 yes Figure 6 A cross-sectional schematic diagram;

[0042] Figure 8 yes Figure 6 A schematic diagram of the decomposition process;

[0043] Figure 9 This is a schematic diagram of the fourth structure of an inductor provided in one embodiment of the present invention;

[0044] Figure 10 This is a schematic diagram of a coil assembly located inside a sealed housing in the prior art;

[0045] Figure 11 This is a fifth structural schematic diagram of an inductor provided in one embodiment of the present invention;

[0046] Figure 12 This is a sixth structural schematic diagram of an inductor provided in one embodiment of the present invention;

[0047] Figure 13 This is a seventh structural schematic diagram of an inductor provided in an embodiment of the present invention;

[0048] Figure 14 This is an eighth structural schematic diagram of an inductor provided in one embodiment of the present invention.

[0049] In the picture:

[0050] 1. Coil assembly; 11. Core post magnetic core; 12. First insulation layer; 13. Coil; 14. Second insulation layer; 2. Sealed outer shell; 3. Sealing assembly; 31. First seal; 32. Second seal; 321. First sub-seal; 322. Second sub-seal; 4. Cover plate. Detailed Implementation

[0051] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0052] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0053] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0054] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0055] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0056] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in between the component.

[0057] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0058] Example 1

[0059] This embodiment provides an inductor that improves the overall electromagnetic performance of the inductor while ensuring normal heat dissipation.

[0060] like Figures 1-5 As shown, the inductor includes a coil assembly 1 and a sealing assembly 3. The sealing assembly 3 is located outside the coil assembly 1 and is used to seal the coil assembly 1. The sealing assembly 3 includes a first sealing element 31 and a second sealing element 32. The first sealing element 31 is magnetic. Specifically, the first sealing element 31 and the second sealing element 32 are connected, and both the first sealing element 31 and the second sealing element 32 are thermally conductive. It can be understood that by using the first sealing element 31 and the second sealing element 32 to seal the coil assembly 1, the first sealing element 31 serves an encapsulation function, improving the overall electromagnetic performance of the inductor. Furthermore, since both the first sealing element 31 and the second sealing element 32 are thermally conductive, the overall electromagnetic performance of the inductor is improved while ensuring effective heat dissipation.

[0061] It should be noted that in this embodiment, the first sealing element 31 can be magnetic powder adhesive, and the second sealing element 32 can be potting compound. Magnetic powder adhesive is a functional adhesive material composed of magnetic powder (which can be soft magnetic powder, such as ferrite, metallic magnetic powder, etc.) and a polymer matrix (epoxy resin, silicone, polyurethane, etc.). The potting compound can be one or more of thermally conductive silicone, thermally conductive grease, or other types of thermally conductive materials. The specific composition of magnetic powder adhesive and potting compound, as well as the principle by which magnetic powder adhesive can improve the electromagnetic performance of inductors, are existing technologies and will not be elaborated in this embodiment.

[0062] Furthermore, the second seal 32 is lower in cost and weight. By using the first seal 31 and the second seal 32 in combination, performance can be improved while maintaining low manufacturing cost and light weight. Moreover, the first seal 31 has a higher thermal conductivity than ordinary potting compound, which can further improve the heat dissipation of the inductor.

[0063] Furthermore, such as Figure 3 As shown, the first sealing member 31 and the second sealing member 32 cooperate to form a receiving cavity, and the coil assembly 1 is disposed in the receiving cavity. The receiving cavity is formed by the first sealing member 31 and the second sealing member 32 to seal the coil assembly 1. During installation, it is sufficient to ensure that the coil assembly 1 is located in the receiving cavity.

[0064] For example, such as Figures 2-3As shown, a sealing groove is formed on one surface of the first sealing member 31, and the second sealing member 32 is installed in the groove opening and cooperates with the first sealing member 31 to form a receiving cavity. That is, the internal space of the first sealing member 31 is used to cooperate with the second sealing member 32 to form a receiving cavity, and the sealing performance inside the receiving cavity is high.

[0065] Furthermore, the shape of the sealing groove wall matches the shape of the coil assembly 1. This arrangement facilitates a better fit between the first seal 31 and the coil assembly 1, allowing the coil assembly 1 to fit snugly within the first seal 31, thus making the coil assembly 1 more stable.

[0066] Optionally, continue to refer to Figure 2 The second seal 32 has a contoured groove on its surface facing the coil assembly 1, and the shape of the contoured groove matches the shape of the coil assembly 1. It can be understood that the matching shape of the contoured groove with the shape of the coil assembly 1 improves the fit between the second seal 32 and the coil assembly, making it easier for the second seal 32 to fit better with the coil assembly 1, and making the coil assembly 1 more stable.

[0067] Furthermore, it can be conceived that the coil assembly 1 is located within the receiving cavity formed by the first seal 31 and the second seal 32. Both the first seal 31 and the second seal 32 can fit into the first seal 31, thereby achieving a seal on the coil assembly 1 and further improving the stability of the coil assembly 1.

[0068] Furthermore, the inductor also includes a sealed housing 2 with an opening, which houses the coil assembly 1 and the sealing assembly 3. In other words, both the first seal 31 and the second seal 32 are located within the sealed housing 2. It is understood that by providing the sealed housing 2, protection is provided for the coil assembly 1 and the sealing assembly 3, reducing the impact of vibration on the inductor during use and providing dust and water resistance. It is also understood that the sealed housing 2 can be a metal housing, and the metal structure serves as a protective cover, providing drop resistance and wear resistance.

[0069] Furthermore, such as Figures 3-4 As shown, the opening of the sealing groove is flush with the opening of the sealing housing 2, and the second sealing member 32 is located inside the sealing groove and extends to the opening inside the sealing groove. Specifically, the first sealing member 31 and the second sealing member 32 are in contact. It can be understood that through this arrangement, the first sealing member 31, in conjunction with the second sealing member 32, seals the coil assembly 1, preventing the coil assembly 1 from being exposed, ensuring the heat dissipation effect of the inductor, and improving the overall electromagnetic performance of the inductor. Furthermore, the opening of the sealing groove is flush with the opening of the sealing housing 2, resulting in a larger contact area with the coil assembly 1, which is beneficial for further improving the electromagnetic performance of the inductor.

[0070] Furthermore, such as Figure 3 and Figure 5 As shown, the coil assembly 1 includes a core magnetic core 11 and a coil 13. The core magnetic core 11 has a rod-shaped structure, and the coil 13 is wound around the core magnetic core 11. The magnetism of the core magnetic core 11 is greater than that of the first sealing member 31. It can be understood that by setting the core magnetic core 11 to a rod-shaped structure, and with the first sealing member 31 cooperating with the second sealing member 32 to seal the core magnetic core 11, and furthermore, the first sealing member 31 and the core magnetic core 11 can work together to form a closed magnetic circuit. Compared to the prior art that uses upper and lower yokes and two central pillars positioned between the upper and lower yokes for assembly, the overall structure is simpler, eliminates the need for core assembly, simplifies the manufacturing process, and allows for a smaller overall size, thus helping to meet the miniaturization requirements of inductors.

[0071] Furthermore, such as Figures 1-3 As shown, the coil assembly 1 is arranged horizontally relative to the sealing assembly 3. It is understood that in some embodiments, the horizontal arrangement of the coil assembly 1 (arranged in the horizontal direction) can make full use of the first seal 31 with the sealing groove to form an inductor with a closed magnetic circuit, and is beneficial to saving the space occupied by the sealing assembly 3 in the vertical direction, and the coil assembly 1 is more stable.

[0072] In other embodiments, such as Figures 6-8 As shown, the coil assembly 1 can also be arranged vertically relative to the sealing assembly 3.

[0073] For example, in order to form an inductor with the first seal 31 and the core 11 to create a closed magnetic circuit, the inductor further includes a cover plate 4. The end cap 4 is located at the opening of the sealed housing 2. The first seal 31 is formed at least on the bottom surface of the coil assembly 1 and on two opposite sides of the coil assembly 1. A second seal 32 is formed between the first seal 31 and the coil assembly 1. The cover plate 4 is placed on the upper part of the coil assembly 1 and connected to the first seal 31. (See reference...) Figure 8 The first seal 31 can be a U-shaped part formed in the sealing shell 2. The coil assembly 1 is placed in the U-shaped first seal 31. Then, the coil assembly 1 and the first seal 31 are filled with potting grout. Then, the second seal 32 is formed by curing to seal the coil assembly 1. Finally, the cover plate 4 is placed on the coil assembly 1 to form a closed magnetic circuit.

[0074] Furthermore, the coil assembly 1 also includes a first insulating layer 12 and a second insulating layer 14. The first insulating layer 12 wraps around the core 11 and is located between the core 11 and the coil 13, while the second insulating layer 14 wraps around the coil 13. It is understood that the first insulating layer 12 and the second insulating layer 14 respectively insulate the core 11 and the coil 13, thereby insulating the first seal 31 from the coil assembly 1 and improving the reliability of electrical insulation.

[0075] Regarding the shape and number of coil assembly 1. In this embodiment, as... Figure 3 As shown, the inductor includes a coil assembly 1, the cross-sectional shape of which is circular. Of course, in other embodiments, such as... Figure 9 As shown, the cross-sectional shape of coil assembly 1 can also be elliptical, which can be used in scenarios where inductor height is required. Figures 10-12 As shown, the inductor may also include two coil assemblies 1. The shape and number of coil assemblies 1 can be determined according to actual usage requirements.

[0076] For example, as shown in Figure 2, the surface of the first seal 31 facing the inner wall of the sealing housing 2 has a protrusion. Specifically, the inner wall of the sealing housing 2 also has a corresponding protrusion, which is wavy. It can be understood that the wavy protrusion on the inner wall of the sealing housing 2, which is in contact with the first seal 31, helps to increase the contact area between the first seal 31 and the inner wall of the sealing housing 2, improves heat dissipation, and provides better connection strength with the sealing housing 2.

[0077] Of course, in other embodiments, the surface of the second seal 32 facing the inner wall of the sealing housing 2 has a protrusion. It is understood that in different mating configurations of the first seal 31 and the second seal 32, the contact conditions between the first seal 31 and the second seal 32 and the inner wall of the sealing housing 2 are different. The protrusion on the surface of the second seal 32 facing the inner wall of the sealing housing 2, which mates with the corresponding protrusion on the inner wall of the sealing housing 2, helps to increase the contact area between the second seal 32 and the inner wall of the sealing housing 2, improves heat dissipation, and provides better connection strength with the sealing housing 2.

[0078] Furthermore, such as Figures 3-4 As shown, the first sealing element 31 includes a bottom sealing portion (not shown in the figure) and a side sealing portion (not shown in the figure) disposed on one side of the bottom sealing portion, with a rounded transition at the connection between the bottom sealing portion and the side sealing portion. It can be understood that, through the above-described arrangement, when the first sealing element 31 is coated, it facilitates contact between the connection between the bottom sealing portion and the side sealing portion and the corresponding position on the inner wall of the sealing housing 2, avoiding the reduction of contact area due to gas between the first sealing element 31 and the inner wall of the sealing housing 2, thus improving the heat dissipation effect of the first sealing element 31 and the connection strength between the first sealing element 31 and the sealing housing 2.

[0079] For example, the sealing housing 2 is made of aluminum. It is understood that aluminum has good thermal conductivity, effectively transferring the heat generated by the inductor during operation to the external environment, thereby reducing the inductor's temperature and extending its service life. Furthermore, aluminum has a low density, and using an aluminum housing can reduce the inductor's weight, meeting the requirements for lightweight design.

[0080] Furthermore, the first seal 31 is a prefabricated part, while the second seal 32 is potted and molded. By setting the first seal 31 as a prefabricated part, it can be used directly during installation, which helps to improve installation efficiency. Moreover, the potting and molding of the second seal 32 allows the potting of the second seal 32 to be carried out according to the actual alignment between the coil assembly 1 and the first seal 31. The second seal 32 can enter the gap between the first seal 31 and the coil assembly 1 to achieve better sealing.

[0081] In this embodiment, the inductor is assembled as follows: First, a first sealing element 31 of a predetermined shape is formed inside the sealed housing 2 using magnetic powder slurry that is either post-cured or directly formed. For example, a first sealing element 31 of a certain thickness can be formed on the inner wall (i.e., the bottom wall and side wall) of the sealed housing 2. Then, a first insulating layer 12 is formed on the outer surface of the core 11, and a coil 13 is wound around the first insulating layer 12. A second insulating layer 14 is then wrapped around the coil 13 to form a coil assembly 1. The coil assembly 1 is then placed in the sealing groove of the first sealing element 31, and a potting slurry is poured into the sealing groove. The mixture is then cured to form a second sealing element 32 that seals the coil assembly 1, thus forming the inductor. Because the first sealing element 31, which has magnetic properties, is pre-cured, the influence of the magnetic powder slurry on the coil assembly 1 during the molding process can be avoided, improving the insulation between the coil assembly 1 and the first sealing element 31, thereby increasing its withstand voltage value and increasing the reliability of the inductor.

[0082] The above process simplifies the assembly process and can improve the voltage withstand performance of the inductor, thereby improving its reliability.

[0083] Of course, it is conceivable that in the above process, the coil assembly 1 can be placed inside the sealed housing 2 first, the first seal 31 can be filled between the sealed housing 2 and the coil assembly 1, and then the second seal 32 can be filled into the sealed housing 2 to seal the coil assembly 1 and form an inductor.

[0084] Example 2

[0085] like Figure 13 As shown, the inductor in this second embodiment is basically the same as the inductor in the first embodiment, except that the opening of the sealing groove is located below the opening of the sealing housing 2, and the second sealing member 32 is located inside the sealing groove and extends to the opening of the sealing housing 2, contacting the inner wall of the sealing housing 2. It can be understood that the second sealing member 32 covers the first sealing member 31 and the coil assembly 1, the first sealing member 31 is not exposed, and the second sealing member 32 covers and seals the top of the first sealing member 31, providing waterproofing and dustproofing.

[0086] Furthermore, the thickness of the second seal 32 covering the first seal 31 is at least greater than the particle size of the largest magnetic powder particle in the first seal 31, preventing the magnetic powder in the first seal 31 from oxidizing, so that the magnetism of the first seal 31 remains essentially unchanged, thereby improving the stability of the first seal 31.

[0087] Example 3

[0088] like Figure 14 As shown, the inductor in this third embodiment is basically the same as the inductor in the first embodiment, except that the first sealing member 31 includes four third sub-sealing members, and the second sealing member includes a first sub-sealing member 321 and a second sub-sealing member 322 disposed opposite to each other. The four third sub-sealing members, the first sub-sealing member 321, and the second sub-sealing member 322 cooperate with each other to form a receiving cavity. It can be understood that the above arrangement only provides four third sub-sealing members on the inner wall of the sealing shell 2. In other words, the first sealing member 31 is not provided below and above the coil assembly 1. The first sealing member 31 is only formed on the side wall surface of the sealing shell 2 and cooperates with the first sub-sealing member 321 and the second sub-sealing member 322 to form a receiving cavity, which can achieve sealing of the coil assembly. Moreover, the first sealing member 31 can still form a closed magnetic circuit inductor, and the amount of the first sealing member 31 can be reduced, thus reducing costs.

[0089] In this embodiment, two third sub-seals are arranged opposite each other in the length direction of the sealing housing 2, and two other third sub-seals are arranged opposite each other in the width direction of the sealing housing 2. The first sub-seal 321 and the second sub-seal 322 are arranged opposite each other in the height direction of the sealing housing 2. The two third sub-seals opposite each other in the width direction of the sealing housing 2, the two third sub-seals opposite each other in the length direction of the sealing housing 2, the first sub-seal 321 and the second sub-seal 322 cooperate with each other to form a receiving cavity.

[0090] It should be noted that the first sub-seal 321 and the second sub-seal 322 can be the same or different, depending on the actual usage requirements, and no specific limitation is made.

[0091] Further reference Figure 12The thermal conductivity of the first sub-seal 321 is greater than that of the second sub-seal 322, and less than that of the third sub-seal. It is understood that the third sub-seal is located on the inner wall of the sealing shell 2, and has a larger contact area with the sealing shell 2. The second largest contact area is with the first sub-seal 321, which is closer to the bottom of the sealing shell. This arrangement prioritizes the rapid conduction of heat from the inductor to the sealing shell 2. The fact that the thermal conductivity of the first seal 31 is greater than that of the first sub-seal 321, and the thermal conductivity of the third sub-seal is greater than that of the second sub-seal 322, allows for faster heat dissipation from the inductor, ensuring that the inductor has a high heat dissipation effect.

[0092] Furthermore, heat dissipation fins are also formed on the outer surface of the sealing shell 2. Specifically, heat dissipation fins are formed on the outer sidewall and bottom wall of the sealing shell 2.

[0093] It is understandable that, such as Figures 1-3 As shown and Figure 14 As shown, Figures 1-3 Under otherwise identical conditions, the inductor structure shown will have higher electromagnetic performance and higher inductance because the first seal 31 is located below the coil assembly 1. Additionally... Figures 1-3 The heat from the inductor structure shown will dissipate mainly to the lower part of the inductor through the first seal 31 and the sealing housing 2, which facilitates the further improvement of heat dissipation by setting up a separate heat dissipation device (outside the inductor).

[0094] Furthermore, the third sub-seal is perpendicular to the first sub-seal 321. It is understood that, since the third sub-seal is located on the inner wall of the sealing housing 2, making the third sub-seal perpendicular to the first sub-seal 321 facilitates the application of the third sub-seal to the side wall surface of the sealing housing 2, making the operation convenient.

[0095] It should be noted that, Figures 1-9 , Figures 10-14 The structure in all of them includes a sealed outer shell 2, but in other embodiments, the sealed outer shell 2 may not be included, as long as the first seal 31 and the second seal 32 can seal the coil assembly 2, and / or the core 11 in the coil assembly 2 can be combined with the first seal 31 to form a closed magnetic circuit inductance.

[0096] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. An inductor, characterized in that, include: Coil assembly (1); Sealing component (3); The sealing assembly (3) is disposed outside the coil assembly (1) and is used to seal the coil assembly (1). The sealing assembly (3) includes a first sealing element (31) and a second sealing element (32), wherein the first sealing element (31) is magnetic.

2. The inductor according to claim 1, characterized in that, The first seal (31) and the second seal (32) cooperate to form a receiving cavity, and the coil assembly (1) is disposed in the receiving cavity.

3. The inductor according to claim 2, characterized in that, A sealing groove is provided on one surface of the first sealing member (31), and the second sealing member (32) is installed in the groove of the sealing groove and cooperates with the first sealing member (31) to form the receiving cavity.

4. The inductor according to claim 3, characterized in that, The shape of the groove wall of the sealing groove matches the shape of the coil assembly (1); and / or, the second seal (32) has a contoured groove on the surface facing the coil assembly (1), the shape of the contoured groove matching the shape of the coil assembly (1).

5. The inductor according to claim 4, characterized in that, The inductor also includes a sealed housing (2) with an opening, wherein the first seal (31) and the second seal (32) are both located inside the sealed housing (2).

6. The inductor according to claim 5, characterized in that, The opening of the sealing groove is flush with the opening of the sealing shell (2), and the second sealing element (32) is located in the sealing groove and extends to the opening of the sealing groove.

7. The inductor according to claim 5, characterized in that, The opening of the sealing groove is located below the opening of the sealing housing (2), and the second sealing element (32) is located in the sealing groove and extends to the opening of the sealing housing (2) and contacts the inner wall of the sealing housing (2).

8. The inductor according to claim 3, characterized in that, The first sealing element (31) includes a bottom sealing portion and a side sealing portion disposed on one side of the bottom sealing portion, and the connection between the bottom sealing portion and the side sealing portion is rounded.

9. The inductor according to claim 2, characterized in that, The inductor also includes a sealed housing (2) with an opening, wherein the first seal (31) and the second seal (32) are both located inside the sealed housing (2); The first seal (31) includes four third sub-seals, and the second seal includes a first sub-seal (321) and a second sub-seal (322) disposed opposite to each other. The four third sub-seals, the first sub-seal (321) and the second sub-seal (322) cooperate with each other to form the receiving cavity.

10. The inductor according to claim 9, characterized in that, Two of the third sub-seals are arranged opposite each other in the length direction of the sealing housing (2), and two other third sub-seals are arranged opposite each other in the width direction of the sealing housing (2). The first sub-seal (321) and the second sub-seal (322) are arranged opposite each other in the height direction of the sealing housing (2). The two third sub-seals opposite each other in the width direction of the sealing housing (2), the two third sub-seals opposite each other in the length direction of the sealing housing (2), the first sub-seal (321) and the second sub-seal (322) cooperate with each other to form the receiving cavity.

11. The inductor according to claim 10, characterized in that, The thermal conductivity of the first sub-seal (321) is greater than that of the second sub-seal (322) and less than that of the third sub-seal.

12. The inductor according to claim 9, characterized in that, The third sub-seal is perpendicular to the first sub-seal (321).

13. The inductor according to claim 1, characterized in that, The coil assembly (1) includes a core (11) and a coil (13). The core (11) is a rod-shaped structure, and the coil is wound around the core (11). The magnetic properties of the core (11) are greater than those of the first sealing element (31).

14. The inductor according to claim 13, characterized in that, The coil assembly (1) is positioned horizontally relative to the sealing assembly (3).

15. The inductor according to claim 13, characterized in that, The coil assembly (1) is arranged longitudinally relative to the sealing assembly (3).

16. The inductor according to claim 13, characterized in that, The coil assembly (1) further includes a first insulating layer (12) and a second insulating layer (14). The first insulating layer (12) wraps around the core (11) and is located between the core (11) and the coil (13). The second insulating layer (14) wraps around the coil (13).

17. The inductor according to any one of claims 5-7 or 9-12, characterized in that, The first seal (31) has a protrusion on the surface facing the inner wall of the sealing housing (2); and / or, the second seal (32) has a protrusion on the surface facing the inner wall of the sealing housing (2).

18. The inductor according to any one of claims 2-16, characterized in that, The first seal (31) is a prefabricated part, and the second seal (32) is potted and molded.

19. The inductor according to any one of claims 5-7 or 9-12, characterized in that, The sealed outer shell (2) is made of aluminum.

20. The inductor according to claim 15, characterized in that, The inductor also includes a cover plate (4), the first seal (31) is formed at least at the bottom of the coil assembly (1) and on opposite sides of the coil assembly (1), the second seal (32) is formed between the first seal (31) and the coil assembly (1), and the cover plate (4) covers the upper part of the coil assembly (1) and is connected to the first seal (31).

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