Magnetic core assembly and electronic device

Abstract

The utility model provides a kind of magnetic core assembly and electronic equipment, it is related to magnetic sensing technical field.The magnetic core assembly includes package and multiple magnetic cores, and gap is provided between adjacent two magnetic cores;Package is covered in the periphery of at least part magnetic core and is filled in gap;Wherein, magnetic core and package are integrally formed structure.Multiple magnetic cores and package can be equivalent to one module component, realize quick assembly, improve assembly efficiency.Package is filled in the gap between adjacent two magnetic cores, so that the side surface of magnetic core can be closely attached to package, while ensuring the connection strength, reduce thermal resistance, improve heat dissipation capacity, and also improve the surface flatness of magnetic core assembly overall to some extent. When package and magnetic core are formed into complete module component by being covered in the periphery of at least part magnetic core, the deformation generated during installation can be reduced, high-precision size control is realized, and the overall strength and assembly accuracy of magnetic core assembly are improved.

Description

Technical Field

[0001] This utility model generally relates to the field of magnetic sensing technology, and more specifically, to a magnetic core assembly and an electronic device. Background Technology

[0002] Magnetic cores are widely used in electronic devices such as wireless charging products. Due to the brittle and easily broken nature of magnetic cores, if the core is flat and large in area, the design usually divides the large-area core into multiple independent small-area cores, which are then spliced ​​together to reduce core breakage. Multiple independent small-area cores increase the difficulty of design and installation and reduce assembly efficiency.

[0003] To address this issue, existing technologies utilize brackets to assist in the installation of the magnetic cores. Specifically, the brackets are made of plastic and have multiple cutout areas. These cutout areas can be rectangular, fan-shaped, or other structures corresponding to the shape of the magnetic cores. Multiple magnetic cores are installed one by one within these cutout areas, and then each small magnetic core is pre-fixed to the bracket using adhesive to form a magnetic core assembly. This method has the following drawbacks:

[0004] 1. Low assembly efficiency: During installation, multiple magnetic cores need to be placed on the bracket one by one, which is a cumbersome and inefficient process.

[0005] 2. Low assembly accuracy: On the one hand, there will be certain errors in the production of the magnetic core and the bracket, and there will be a certain gap when the magnetic core and the bracket are matched. On the other hand, when the magnetic core is fully installed on the bracket, the bracket will be deformed by force. Both of the above reasons will reduce the assembly accuracy of the magnetic core assembly.

[0006] 3. Poor heat dissipation: The bracket has high thermal resistance, which is not conducive to heat dissipation of the magnetic core. In addition, the bracket cannot completely fill the gaps between adjacent magnetic cores, which further increases the thermal resistance, thereby reducing the overall heat dissipation efficiency of the magnetic core assembly. Utility Model Content

[0007] The magnetic core assembly and electronic equipment provided by this utility model improve assembly efficiency and heat dissipation.

[0008] According to a first aspect of the present invention, a magnetic core assembly is provided, comprising:

[0009] Multiple magnetic cores, with a gap between two adjacent magnetic cores;

[0010] A package that covers at least a portion of the magnetic core and fills the gap;

[0011] The magnetic core and the package are integrally formed.

[0012] According to a second aspect of the present invention, an embodiment of the present invention also provides an electronic device including the magnetic core assembly described above.

[0013] This utility model has the following advantages or beneficial effects:

[0014] First, the magnetic core and package are integrated into a single structure through insert injection molding, making multiple magnetic cores and packages equivalent to a single modular component, thereby improving assembly efficiency. Second, the integrated structure of the magnetic core and package reduces deformation, improves surface flatness, enhances the overall strength and assembly precision of the magnetic core assembly, and the package also protects the magnetic core, reducing damage and extending its service life. Third, the gap between two adjacent magnetic cores can be completely filled by the package, allowing the sides of the magnetic core to fit tightly against the package, improving connection strength while reducing thermal resistance and enhancing heat dissipation. Attached Figure Description

[0015] Figure 1 The diagram shown is an exploded view of the magnetic core assembly according to Embodiment 1 of this utility model;

[0016] Figure 2 The diagram shown is a partial cross-sectional view of the magnetic core assembly according to Embodiment 1 of this utility model. Figure 1 ;

[0017] Figure 3 The diagram shown is a structural schematic of the magnetic core in the magnetic core assembly of Embodiment 1 of this utility model;

[0018] Figure 4 The diagram shown is a structural schematic of the package in the magnetic core assembly of Embodiment 1 of this utility model;

[0019] Figure 5 The diagram shown is a partial cross-sectional view of the magnetic core assembly according to Embodiment 1 of this utility model. Figure 2 ;

[0020] Figure 6 The diagram shown is a partial cross-sectional view of the magnetic core assembly according to Embodiment 1 of this utility model. Figure 3 ;

[0021] Figure 7 The diagram shown is an exploded view of the magnetic core assembly of Embodiment 2 of this utility model;

[0022] Figure 8 The diagram shown is a structural schematic of the magnetic core in the magnetic core assembly of Embodiment 2 of this utility model;

[0023] Figure 9 The diagram shown is a schematic representation of the fit between the magnetic core and the package in the magnetic core assembly of Embodiment 2 of this utility model;

[0024] Figure 10 The diagram shown is a partial cross-sectional view of the magnetic core assembly of Embodiment 2 of this utility model. Figure 1 ;

[0025] Figure 11 The diagram shown is a partial cross-sectional view of the magnetic core assembly of Embodiment 2 of this utility model. Figure 2 ;

[0026] Figure 12 The diagram shown is an exploded view of the magnetic core assembly of Embodiment 3 of this utility model;

[0027] Figure 13 The diagram shown is an exploded view of the magnetic core, package, and heat dissipation structure in the magnetic core assembly of Embodiment 3 of this utility model;

[0028] Figure 14 The diagram shown is a schematic representation of the fit between the magnetic core, the package, and the heat dissipation structure in the magnetic core assembly of Embodiment 3 of this utility model.

[0029] Figure 15 The diagram shown is a partial cross-sectional view of the magnetic core assembly of Embodiment 3 of this utility model;

[0030] Figure 16 The diagram shown is an exploded view of the magnetic core assembly of Embodiment 4 of this utility model;

[0031] Figure 17 The diagram shown is a schematic diagram of the cooperation between the package and the heat dissipation structure in the magnetic core assembly of Embodiment 4 of this utility model;

[0032] Figure 18 The diagram shown is a schematic representation of the fit between the magnetic core, the package, and the heat dissipation structure in the magnetic core assembly of Embodiment 4 of this utility model.

[0033] Figure 19 The diagram shown is an exploded view of the magnetic core assembly of Embodiment 5 of this utility model;

[0034] Figure 20 The diagram shown illustrates the assembly of the magnetic core, package, and coil support in the magnetic core assembly of Embodiment 5 of this utility model. Figure 1 ;

[0035] Figure 21 The diagram shown illustrates the assembly of the magnetic core, package, and coil support in the magnetic core assembly of Embodiment 5 of this utility model. Figure 2 ;

[0036] Figure 22 The diagram shown illustrates the assembly of the magnetic core, package, and coil support in the magnetic core assembly of Embodiment 5 of this utility model. Figure 3 ;

[0037] Figure 23 The diagram shown is an exploded view of the magnetic core assembly of Embodiment Six of this utility model;

[0038] Figure 24 The diagram shown illustrates the assembly of the magnetic core, package, and coil support in the magnetic core assembly of Embodiment Six of this utility model. Figure 1 ;

[0039] Figure 25 The diagram shown illustrates the assembly of the magnetic core, package, and coil support in the magnetic core assembly of Embodiment Six of this utility model. Figure 2 ;

[0040] Figure 26 The diagram shown illustrates the assembly of the magnetic core, package, and coil support in the magnetic core assembly of Embodiment Six of this utility model. Figure 3 .

[0041] The reference numerals in the attached figures are explained as follows:

[0042] 1. Magnetic core; 2. Package; 3. Heat dissipation structure; 4. Coil frame; 5. Coil; 6. Housing; 7. Cover plate; 8. Connector; 9. Baffle;

[0043] 10. Gap; 11. Surface;

[0044] 21. Covering part; 211. Outer surface; 22. Wrapping part; 221. Side; 23. Filling part;

[0045] 20. Mounting slot;

[0046] 41. First limiting component; 42. Second limiting component; 401. Coil groove; 402. Glue injection cavity. Detailed Implementation

[0047] The technical solutions of the exemplary embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The exemplary embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of this utility model.

[0048] In the description of this utility model, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more; and the term "and / or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the / described" object or "an" object are also intended to indicate one of a possible plurality of such objects.

[0049] Unless otherwise specified or stated, the terms "connection," "fixed," etc., should be interpreted broadly. 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] Furthermore, in the description of this utility model, it should be understood that the directional terms such as "upper," "lower," "inner," and "outer" described in the exemplary embodiments of this utility model are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the exemplary embodiments of this utility model. It should also be understood that, in the context, when an element or feature is mentioned as being "upper," "lower," "inner," or "outer" of another element (one or more), it can be directly connected to the other element (one or more) "upper," "lower," "inner," or "outer," or it can be indirectly connected to the other element (one or more) "upper," "lower," "inner," or "outer" through an intermediate element.

[0051] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many 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 thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0052] Example 1

[0053] like Figures 1-3 As shown, this embodiment provides a magnetic core assembly, which includes a package 2 and a plurality of magnetic cores 1, with a gap 10 between adjacent magnetic cores 1. The package 2 covers at least a portion of the magnetic cores 1 and fills the gaps 10. The magnetic cores 1 and the package 2 are integrally formed.

[0054] The magnetic core assembly provided in this embodiment integrates the magnetic core 1 and the package 2 into a single structure through an insert injection molding process. This allows multiple magnetic cores 1 and packages 2 to be equivalent to a single modular component, improving assembly efficiency. The integrated structure of the magnetic core 1 and package 2 through insert injection molding reduces deformation, improves surface flatness, and enhances the overall strength and assembly precision of the magnetic core assembly. Furthermore, the package 2 protects the magnetic core 1, reducing damage and extending its service life. The gap 10 between adjacent magnetic cores 1 can be completely filled by the package, ensuring a tight fit between the magnetic core 1 and the package 2. This guarantees connection strength while reducing thermal resistance and improving heat dissipation.

[0055] For example, the multiple magnetic cores 1 are a split structure. Compared with the existing integral structure magnetic cores, the multiple magnetic cores 1 are independent small magnetic cores, which have the advantages of freedom and flexibility, and can reduce the difficulty of design and installation.

[0056] Specifically, such as Figure 3 As shown, multiple magnetic cores 1 are arranged along a first direction and / or a second direction, denoted by D1, D2, and D3, respectively. The first, second, and third directions are perpendicular to each other. The multiple magnetic cores 1 can be arranged only along the first direction, or only along the second direction, or arranged along both the first and second directions. For example, the magnetic cores 1 may have a square structure, and exemplarily, the number of magnetic cores 1 is twenty-five.

[0057] For example, such as Figure 4 As shown, the package 2 is made of a thermally conductive material. For example, the package 2 can be made of a thermally conductive and insulating plastic material, giving it both thermal conductivity and insulation properties. The thermal conductivity of ordinary plastic materials is approximately 0.15 W / (mK) to 0.4 W / (mK), but the thermal conductivity of thermally conductive and insulating plastic materials is approximately 2 W / (mK) to 10 W / (mK), providing excellent thermal conductivity to aid in heat dissipation of the magnetic core 1. Because the package 2 fills the gap 10 between two adjacent magnetic cores 1, it reduces thermal resistance and improves heat dissipation capacity, thereby improving the overall heat dissipation efficiency of the magnetic core assembly.

[0058] In one embodiment, such as Figures 5-6 As shown, the projection of the magnetic core 1 onto the reference plane is located inside the projection of the package 2 onto the reference plane. The package 2 includes a cover portion 21, which is disposed on at least one side of the magnetic core 1 along a third direction. The reference plane is the plane containing the first direction and the second direction.

[0059] Specifically, the covering part 21 is a planar structure or a thin plate structure. The covering part 21 is disposed on the top surface of the magnetic core 1 along the third direction, or the covering part 21 is disposed on the bottom surface of the magnetic core 1 along the third direction, that is, the covering part 21 is disposed on one side; or the covering part 21 can be disposed on both sides of the magnetic core 1 along the third direction, that is, the covering part 21 is disposed on both sides.

[0060] In this way, the cover 21 can provide insulation protection for at least one side of the magnetic core 1 along the third direction, and the cover 21 is laid flat on the top and / or bottom surface of the magnetic core 1 along the third direction, which can improve the surface flatness of the magnetic core 1, which is beneficial to the heat dissipation of the magnetic core 1, and the cover 21 can better fit with the external heat transfer surface when the magnetic core assembly comes into contact with it.

[0061] In one embodiment, such as Figures 5-6As shown, the package 2 also includes a wrapping portion 22, which is connected to the cover portion 21 and surrounds the plurality of magnetic cores 1.

[0062] Specifically, the wrapping part 22 has a ring structure. For example, among the twenty-five magnetic cores 1, nine magnetic cores 1 are arranged in three rows and three columns and located in the middle; the remaining sixteen magnetic cores 1 have a rectangular ring structure and surround the nine magnetic cores 1. The wrapping part 22 contacts the sides of these sixteen magnetic cores 1 along the first direction and / or the second direction.

[0063] In this way, the wrapping part 22 comes into contact with and fits against the outermost magnetic core 1 among the multiple magnetic cores 1, realizing the edge wrapping function. While improving the support strength, it also realizes the edge protection function to prevent damage caused by edge collision.

[0064] In one embodiment, such as Figures 5-6 As shown, the package 2 also includes a filling part 23, which is connected to the cover part 21. The filling part 23 fills the gap 10 between two adjacent magnetic cores 1. The filling part 23 and the magnetic core 1 are in contact with each other along the side of the first direction and / or the second direction. Through the injection molding process, the fit between the filling part 23 and the magnetic core 1 can be improved, the thermal resistance can be reduced, and the heat dissipation capacity can be improved.

[0065] The magnetic core 1, the covering part 21, the wrapping part 22 and the filling part 23 are integrally formed structures.

[0066] In one embodiment, two covering portions 21 are disposed on both sides of the magnetic core 1 along a third direction. The covering portions 21 are double-sided, and the encapsulation 2 is a fully enclosed structure. The covering portion 21 has an outer surface 211 along the third direction and on the side away from the magnetic core 1. The encapsulation portion 22 has two side surfaces 221 along the third direction. The two side surfaces 221 and the two outer surfaces 211 are coplanarly disposed.

[0067] In one embodiment, such as Figures 1-2 and Figure 5 As shown, the magnetic core assembly also includes a coil frame 4 and a coil 5. The coil frame 4 is disposed on the side of the package 2 away from the magnetic core 1, and the coil 5 is wound on the coil frame 4. The coil 5 and the magnetic core 1 cooperate to perform electromagnetic transformation.

[0068] Specifically, the cross-section of the coil frame 4 is similar to a U-shaped structure, which serves to limit the coil 5 and prevent the coil 5 from coming off the coil frame 4. Since the outer surface 211 of the cover portion 21 and the side surface 221 of the wrapping portion 22 in the package 2 are flush, the coil frame 4 and the package 2 can fit tightly together.

[0069] In one embodiment, the magnetic core assembly further includes a housing 6 and a cover plate 7. The housing 6 has an opening, and the cover plate 7 covers the opening. The magnetic core 1, the package 2, the coil 5, and the coil frame 4 are all disposed between the housing 6 and the cover plate 7.

[0070] For example, a receiving cavity is formed between the outer shell 6 and the cover plate 7, which provides a receiving space for the magnetic core 1, the package 2, the coil 5 and the coil frame 4, and serves to isolate and protect them.

[0071] For example, the outer casing 6 is provided with a first connecting hole, and the cover plate 7 is provided with a second connecting hole corresponding to the first connecting hole. The connector 8 can be a bolt, which passes through the first and second connecting holes to fix the outer casing 6 and the cover plate 7. It can be understood that there are multiple first connecting holes, multiple second connecting holes, and multiple connectors 8. Multiple first connecting holes are arranged around the outer casing 6, multiple second connecting holes are arranged around the cover plate 7, and multiple connectors 8 pass through the multiple first connecting holes and multiple second connecting holes respectively, further increasing the connection strength between the outer casing 6 and the cover plate 7.

[0072] Of the two components, the outer shell 6 and the cover plate 7, the one closest to the coil 5 is made of non-metallic material, while the other is made of metallic material.

[0073] For example, the outer casing 6 is made of a non-metallic material. As a non-metallic casing, it is lightweight, meeting the requirements for lightweight design, and has a relatively low manufacturing cost. The cover plate 7 is made of a metallic material. As a metal plate, it has good thermal conductivity, allowing heat to be transferred away, further improving the heat dissipation effect.

[0074] This embodiment also provides an electronic device, including the magnetic core assembly described above. The electronic device can be an electronic product or electronic component, such as an inductor, a wireless device, a wireless charging product, etc.

[0075] Example 2

[0076] This embodiment is similar to Embodiment 1, except that the specific structure of the package 2 is different.

[0077] like Figures 7-11 As shown, the encapsulation 2 provided in this embodiment has one covering part 21. One covering part 21 is disposed on one side of the magnetic core 1 along the third direction, and the other side of the magnetic core 1 along the third direction is exposed. That is, the encapsulation 2 does not completely wrap the magnetic core 1. The covering part 21 is disposed on one side, and the encapsulation 2 is a semi-enclosed structure.

[0078] Specifically, such as Figures 10-11As shown, the covering part 21 has an outer surface 211 along the third direction and away from the magnetic core 1, and the wrapping part 22 has two side surfaces 221 along the third direction. One side surface 221 is coplanar with the outer surface 211, and the other side surface 221 is coplanar with the surface 11 of the magnetic core 1 away from the covering part 21.

[0079] For example, along a third direction, if one side 221 of the wrapping portion 22 and the outer surface 211 of the covering portion 21 are approximately the same height, then the side 221 and the outer surface 211 are flush, which improves the surface flatness of the package 2 and is beneficial to the heat dissipation of the magnetic core 1.

[0080] For example, along a third direction, the other side 221 of the wrapping portion 22 and the surface 11 of the magnetic core 1 are approximately at the same height, and the side 221 and the surface 11 are flush, ensuring the overall surface flatness of the magnetic core 1 and the package 2. At the same time, the surface 11 of the magnetic core 1 facing away from the cover portion 21 is exposed, and the magnetic core 1 and the coil 5 are in direct contact, which is beneficial to improving the electromagnetic conversion efficiency.

[0081] Example 3

[0082] This embodiment is similar to Embodiment 1, except for other detailed structural features of the magnetic core assembly.

[0083] like Figures 12-15 As shown, the magnetic core assembly provided in this embodiment also includes a heat dissipation structure 3. The heat dissipation structure 3 is disposed on the side of the package 2 away from the magnetic core 1, so that the heat generated by the magnetic core 1 is transferred to the package 2 and evaporated through the heat dissipation structure 3, thereby improving the heat dissipation effect.

[0084] The heat dissipation structure 3, the package 2, and the magnetic core 1 are formed into an integral structure through injection molding.

[0085] In one embodiment, the projection of the magnetic core 1 onto the reference plane is at least partially located inside the projection of the heat dissipation structure 3 onto the reference plane; wherein the reference plane is the plane containing the first direction and the second direction.

[0086] In this way, the area of ​​the heat dissipation structure 3 can cover the area of ​​the magnetic core 1, so that the heat generated by the magnetic core 1 can be transferred out through the heat dissipation structure 3, while ensuring the uniformity of heat dissipation of the magnetic core 1, thereby improving the heat dissipation effect.

[0087] In one embodiment, the heat dissipation structure 3 includes a metal component, and the package 2 has a mounting groove 20 on the side opposite to the magnetic core 1, with the metal component disposed within the mounting groove 20.

[0088] For example, the metal parts may be made of materials such as aluminum or copper.

[0089] Example 3

[0090] This embodiment is similar to Embodiment 1, except for other detailed structural features of the magnetic core assembly.

[0091] like Figures 16-18 As shown, the magnetic core assembly provided in this embodiment also includes a heat dissipation structure 3. The heat dissipation structure 3 includes heat dissipation fins, which are disposed on the side of the package 2 away from the magnetic core 1. By adding heat dissipation fins to the package 2, the heat dissipation area is increased, and the heat dissipation effect is further improved.

[0092] For example, the heat dissipation fins may be protrusions disposed on the side of the package 2 away from the magnetic core 1, the protrusions may extend along a first direction, and a plurality of protrusions may be arranged along a second direction; or, the protrusions may extend along the second direction, and a plurality of protrusions may be arranged along the first direction, so that the heat dissipation fins may cover the area of ​​the package 2 corresponding to the magnetic core 1.

[0093] For example, the heat sink fins and the package 2 are arranged at an angle. For example, the angle between the heat sink fins and the package 2 is an acute angle, a right angle, or an obtuse angle. Specifically, in this embodiment, the heat sink fins and the package 2 are arranged vertically as an example.

[0094] For example, the height of the heat dissipation fins along the third direction is adjustable. Specifically, when the distance between the magnetic core 1 and other components needs to be controlled, the height of the heat dissipation fins along the third direction is adjusted so that the heat dissipation fins provide a certain supporting force for the magnetic core 1, thereby indirectly adjusting the position of the magnetic core 1.

[0095] Example 4

[0096] This embodiment is similar to Embodiment 1, except for other detailed structural features of the magnetic core assembly.

[0097] like Figures 19-22 As shown, the magnetic core assembly provided in this embodiment also includes a coil 5. A coil groove 401 is provided on the side of the package 2 away from the magnetic core 1, and the coil 5 is disposed in the coil groove 401. The coil groove 401 provides a limiting function for the coil 5, preventing the coil 5 from having a large positional deviation, and the coil 5 is wound along the coil groove 401, which facilitates the winding and wire management process.

[0098] For example, the coil groove 401 is an annular groove, which provides a space for the coil 5 with an annular structure. The internal shape of the coil groove 401 is adapted to the outer wall shape of the coil 5.

[0099] For example, the coil groove 401 can be directly disposed on the outer surface 211 of the package 2 on the side opposite to the magnetic core 1, and the coil groove 401, the package 2 and the magnetic core 1 are integrally formed by injection molding.

[0100] In one embodiment, there are multiple coil slots 401, and the width of each coil slot 401 is greater than or equal to the wire diameter of the coil 5. In this way, each turn of the coil 5 can be wound in its corresponding coil slot 401, avoiding excessive compression between adjacent turns of the coil 5. In addition, multiple coil slots 401 can also perform the function of wire management, ensuring the aesthetics and neatness of the coil 5 winding.

[0101] In one embodiment, such as Figures 19-22 As shown, the magnetic core assembly also includes a baffle 9, which is disposed on the side of the package 2 away from the magnetic core 1 and surrounds the coil groove 401. The baffle 9 is used to form a glue injection cavity 402, in which the coil 5 is located and glue injection cavity 402 is used to inject sealant.

[0102] After placing the coil 5 into the coil slot 401, filling the injection cavity 402 with glue not only ensures the fixation of the coil 5 but also encapsulates it, extending its service life. Furthermore, encapsulating the coil 5 with glue improves its heat dissipation.

[0103] Example 5

[0104] This embodiment is similar to Embodiment 1, except for other detailed structural features of the magnetic core assembly.

[0105] like Figures 23-26 As shown, the magnetic core assembly provided in this embodiment also includes a coil 5. A coil groove 401 is provided on the side of the package 2 away from the magnetic core 1, and the coil 5 is disposed in the coil groove 401. The coil groove 401 provides a limiting function for the coil 5, preventing the coil 5 from having a large positional deviation, and the coil 5 is wound along the coil groove 401, which facilitates the winding and wire management process.

[0106] The number of coil slots 401 is one, and the width of one coil slot 401 is greater than or equal to the sum of the wire diameters of the multiple coils 5, so that all the multiple coils 5 can be housed in one coil slot 401. This reduces the difficulty of processing and helps to reduce production costs.

[0107] For example, a first limiting member 41 and a second limiting member 42 are provided on the side of the package 2 away from the magnetic core 1. The first limiting member 41, the second limiting member 42 and the baffle 9 are nested together. The second limiting member 42 is located between the first limiting member 41 and the baffle 9. The first limiting member 41 and the second limiting member 42 are arranged parallel to each other along the edge of the coil groove 401, that is, the first limiting member 41 and the second limiting member 42 are formed by the extension of the edge of the coil groove 401 in a third direction.

[0108] It should be noted that the embodiments of this utility model are merely one example of the principles employed by the present utility model, as shown in the accompanying drawings and described herein. Those skilled in the art will clearly understand that the principles of this utility model are not limited to any details or components of the apparatus shown in the accompanying drawings or described in the specification.

[0109] It should be understood that this invention is not limited to the detailed structure and arrangement of the components described herein. This invention can have other embodiments and can be implemented and performed in various ways. The foregoing variations and modifications fall within the scope of this invention. It should be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more individual features mentioned or apparent in the text and / or drawings. All these different combinations constitute multiple alternative aspects of this invention. The embodiments described in this specification illustrate the best known mode for implementing this invention and will enable those skilled in the art to utilize this invention.

[0110] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and exemplary embodiments are to be considered as exemplary only, and the true scope and spirit of the invention are indicated by the appended claims.

[0111] It should be understood that this utility model is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of this utility model is limited only by the appended claims.

Claims

1. A magnetic core assembly, characterized by, include: Multiple magnetic cores, with a gap between two adjacent magnetic cores; A package that covers at least a portion of the magnetic core and fills the gap; The magnetic core and the package are integrally formed.

2. The magnetic core assembly of claim 1, wherein, The projection of the magnetic core onto the reference plane is located inside the projection of the package onto the reference plane; The plurality of magnetic cores are arranged along a first direction and / or a second direction, the first direction and the second direction being perpendicular to each other, and the reference plane being the plane containing the first direction and the second direction.

3. The magnetic core assembly of claim 2, wherein, The package includes: A cover portion is disposed on at least one side of the magnetic core along a third direction; A wrapping portion is connected to the covering portion and surrounds the plurality of magnetic cores; A filling portion, connected to the covering portion and disposed within the gap; The magnetic core, the covering part, the wrapping part, and the filling part are integrally formed, and the third direction is perpendicular to the first direction and the second direction.

4. The magnetic core assembly of claim 3, wherein, The two covering portions are disposed on both sides of the magnetic core along the third direction. The covering portions have an outer surface along the third direction and on the side away from the magnetic core. The wrapping portion has two side surfaces along the third direction. The two side surfaces and the two outer surfaces are coplanarly disposed.

5. The magnetic core assembly of claim 3, wherein, One of the covering portions is disposed on one side of the magnetic core along the third direction. The covering portion has an outer surface along the third direction and on the side away from the magnetic core. The wrapping portion has two sides along the third direction, one of which is coplanar with the outer surface, and the other side is coplanar with the surface of the magnetic core on the side away from the covering portion.

6. The magnetic core assembly of any of claims 1-5, wherein, Also includes: A heat dissipation structure is disposed on the side of the package that is away from the magnetic core; The heat dissipation structure, the package, and the magnetic core are integrally formed.

7. The magnetic core assembly of claim 6, wherein, The projection of the magnetic core onto the reference plane is at least partially located inside the projection of the heat dissipation structure onto the reference plane; The plurality of magnetic cores are arranged along a first direction and / or a second direction, the first direction and the second direction being perpendicular to each other, and the reference plane being the plane containing the first direction and the second direction.

8. The magnetic core assembly of claim 6, wherein, The heat dissipation structure includes a metal component, and the package has a mounting groove on the side opposite to the magnetic core, with the metal component disposed within the mounting groove.

9. The magnetic core assembly of claim 6, wherein, The heat dissipation structure includes heat dissipation fins, which are disposed on the side of the package opposite to the magnetic core.

10. The magnetic core assembly of any of claims 1-5, wherein, The magnetic core assembly also includes: The coil has a coil slot on the side of the package away from the magnetic core, and the coil is disposed in the coil slot. The coil groove and the package are integrally formed.

11. The magnetic core assembly of claim 10, wherein, The number of coil slots is one, and the width of the coil slot is greater than or equal to the sum of the diameters of the multiple turns of the coil wire; or, the number of coil slots is multiple, and the width of each coil slot is greater than or equal to the diameter of the coil wire.

12. The magnetic core assembly of claim 10, wherein, Also includes: A baffle is disposed on the side of the package opposite to the magnetic core and surrounds the coil groove. The baffle is used to form a glue injection cavity, and the coil is located in the glue injection cavity.

13. The magnetic core assembly of claim 10, wherein, Also includes: An outer casing, wherein the outer casing is provided with an opening; A cover plate is provided over the opening, and the magnetic core, the package, the coil, and the coil slot are all disposed inside the housing and located between the housing and the cover plate; Of the two components, the outer shell and the cover plate, the one closest to the coil is made of a non-metallic material, and the other is made of a metallic material.

14. The magnetic core assembly of any of claims 1-5, wherein, The package is made of a thermally conductive material; And / or, the package is made of an insulating material.

15. An electronic device, comprising: Includes the magnetic core assembly as described in any one of claims 1 to 14.

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