Magnetic device and electronic equipment

Abstract

The invention relates to the technical field of magnetic devices, and discloses a magnetic device and electronic equipment. An opening is formed in one end of the shell to form a containing cavity, and the open end of the shell is attached to the upper surface of the supporting body and connected with the supporting body in a sealed mode; at least one magnetic ring group is arranged on the upper surface of the supporting body and is positioned in the accommodating cavity, and a winding coil is wound on the magnetic ring group; the plurality of terminals are arranged on the side edge of the supporting body, and the wiring ends of the magnetic ring group are correspondingly connected with the terminals on the upper surface of the supporting body. The reliability of the device is improved.

Description

Technical Field

[0001] This application relates to the field of magnetic device technology, specifically to a magnetic device and electronic device. Background Technology

[0002] Magnetic devices (such as network transformers, inductors, common-mode chokes, etc.) are key components in electronic devices and are widely used in power transmission, signal isolation, energy conversion and other fields. As electronic products develop towards high performance and high reliability, higher requirements are placed on the structural stability, environmental adaptability and long-term reliability of magnetic devices.

[0003] In related technologies, magnetic devices typically employ a housing encapsulation structure. For example, the magnetic device scheme disclosed in patent document CN119381135A involves a lead connector of the magnetic ring coil assembly extending from one end inside the housing to the opposite side of the housing to electrically connect with a metal terminal in a recess within the housing. However, this connection method exposes significant structural problems. Because the connection position of the lead connector to the metal terminal is higher than its exit position in the magnetic ring coil assembly, the lead wire needs to be folded back and extended in a different direction after being led out from the magnetic ring coil assembly. This path will exert an upward pulling tendency on the magnetic ring during the connection process, easily causing the bottom surface of the magnetic ring to detach from the inner bottom surface of the housing, making the magnetic ring coil assembly unstable. At the same time, due to the lifting of the lead wire and poor positioning of the magnetic ring, the highest point of the magnetic ring coil assembly after fixation is very likely to be higher than the end face of the housing, causing the cover plate to fail to be installed in place or to close improperly, reducing the long-term reliability of the device. Summary of the Invention

[0004] In view of this, this application provides a magnetic device and an electronic device to solve the aforementioned technical problems.

[0005] In a first aspect, embodiments of this application disclose a magnetic device, comprising: Support structure; A housing, one end of which is open to form a receiving cavity, and the open end of the housing is attached to the upper surface of the support and is sealed to the support; A magnetic ring assembly, at least one of the magnetic ring assemblies is disposed on the upper surface of the support and located within the accommodating cavity, and a winding coil is wound on the magnetic ring assembly; Terminals, a plurality of said terminals are disposed on the side of the support body, and the wiring terminals of the magnetic ring assembly are connected to the terminals corresponding to the upper surface of the support body.

[0006] In one possible example, a first adhesive layer is provided in the bonding area between the support and the housing, the first adhesive layer connecting the support and the housing respectively.

[0007] In one possible example, the terminal and the terminal block are electrically connected on the upper surface of the support to form an electrical connection point on the terminal block, the electrical connection point being located within the accommodating cavity and at a distance ≥0 from the inner wall of the accommodating cavity (21).

[0008] In one possible example, a clearance groove is provided on the inner wall of the accommodating cavity at the location corresponding to the electrical connection point.

[0009] In one possible example, depending on the number of terminals arranged on the side of the support, the terminals of each magnetic ring group are electrically connected one-to-one with the terminals, or at least one terminal is simultaneously electrically connected to two terminals of each magnetic ring group.

[0010] In one possible example, on the upper surface of the support, the two terminals of each magnetic ring assembly form an electrical connection point on the same terminal, or form two electrical connection points that are spaced apart.

[0011] In one possible example, the support body is provided with spaced positioning bosses, the magnetic ring group is located between adjacent positioning bosses, the side of the positioning boss facing the magnetic ring group matches the outer wall contour of the magnetic ring group, and the opposite side of the positioning boss is in contact with the inner wall of the housing.

[0012] In one possible example, the support body is provided with a second adhesive layer that connects the magnetic ring assembly and the winding coil between adjacent positioning bosses.

[0013] In one possible example, the connection area between the second adhesive layer and the magnetic ring assembly is smaller than the first adhesive value, and the connection area between the second adhesive layer and the winding coil is smaller than the second adhesive value.

[0014] In one possible example, the support body is provided with spaced positioning protrusions, the positioning protrusions are wound around the magnetic ring group, and the side of the positioning protrusions facing away from the magnetic ring group is provided with a guide slope.

[0015] In one possible example, a plurality of the terminals are spaced apart on the side of the support, and each terminal covers the side surface of the support and a portion of the upper and lower surfaces.

[0016] In one possible example, the terminal is arranged in a 'U' or 'C' shape.

[0017] In one possible example, the terminal includes an electrode segment and at least one connecting segment, the connecting segment being connected to the upper surface of the support and electrically connected to the terminal to form an electrical connection point, and the electrode segment being connected to the side surface and part of the lower surface of the support.

[0018] In one possible example, the support includes a PCB base.

[0019] In one possible example, the terminal further includes an embedded segment embedded in the support, with its two ends connected to the connection segment and the electrode segment, respectively.

[0020] In one possible example, the side of the embedding segment is provided with a necking portion that narrows from the side of the embedding segment toward the center of the embedding segment.

[0021] In one possible example, the magnetic ring assembly includes at least one transformer magnetic ring, on which the winding coil is wound.

[0022] In one possible example, the magnetic ring assembly includes a transformer magnetic ring and a common-mode magnetic ring, with the winding coil wound on the transformer magnetic ring and the common-mode magnetic ring.

[0023] In one possible example, several magnetic ring groups are arranged along the length of the support, and the winding coils are wound on each of the magnetic ring groups.

[0024] Secondly, embodiments of this application disclose an electronic device including the magnetic device described in any of the above embodiments.

[0025] In summary, compared with the prior art, this application discloses a magnetic device and an electronic device. The magnetic device includes a support, a housing, a magnetic ring assembly, and terminals. One end of the housing is open to form a receiving cavity, and the open end of the housing is attached to the upper surface of the support and sealed to the support. At least one magnetic ring assembly is disposed on the upper surface of the support and located in the receiving cavity, and a winding coil is wound on the magnetic ring assembly. Several terminals are disposed on the side of the support, and the wiring terminals of the magnetic ring assembly are connected to the terminals on the upper surface of the support. That is, through the above configuration, the reliability of the device is improved. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1This is a three-dimensional structural schematic diagram of the first type of magnetic device according to the embodiments of this application; Figure 2 This is an exploded view of the first type of magnetic device according to the embodiments of this application; Figure 3 This is a cross-sectional view of the first type of magnetic device according to an embodiment of this application; Figure 4 This is a cross-sectional view of the second type of magnetic device according to an embodiment of this application; Figure 5 This is a three-dimensional structural schematic diagram of the second type of magnetic device according to an embodiment of this application; Figure 6 This is an exploded view of the second type of magnetic device according to the embodiments of this application; Figure 7 This is a partial structural schematic diagram of the first type of magnetic device according to the embodiments of this application; Figure 8 This is a partial structural schematic diagram of the second type of magnetic device according to an embodiment of this application; Figure 9 This is a partial structural schematic diagram of the third type of magnetic device according to an embodiment of this application; Figure 10 This is a partial structural schematic diagram of the fourth type of magnetic device according to the embodiments of this application; Figure 11 This is a three-dimensional structural schematic diagram of the first type of terminal according to the embodiments of this application; Figure 12 This is a three-dimensional structural diagram of the second type of terminal according to an embodiment of this application; Figure 13 This is an exploded view of the third type of magnetic device according to the embodiments of this application; Figure 14 This is a partial structural schematic diagram of the fifth type of magnetic device in the embodiments of this application; Figure 15 This is a partial structural schematic diagram of the sixth type of magnetic device according to the embodiments of this application; Figure 16 This is a partial structural schematic diagram of the seventh type of magnetic device in the embodiments of this application; Figure 17 This is a partial structural schematic diagram of the eighth type of magnetic device according to the embodiments of this application; Figure 18 This is a partial structural schematic diagram of the ninth type of magnetic device according to the embodiments of this application; Figure 19 This is an exploded view of the fourth type of magnetic device in the embodiments of this application.

[0028] Reference numerals: 1. Support body; 11. Snap-fit ​​groove; 12. Positioning boss; 13. Positioning protrusion; 2. Housing; 21. Receiving cavity; 211. Clearance groove; 22. Cutout; 23. Snap-fit ​​post; 3. Magnetic ring assembly; 31. Transformer magnetic ring; 32. Common mode magnetic ring; 4. Winding coil; 5. Terminal; 5a. Electrical connection point; 51. Electrode segment; 52. Connecting segment; 53. Embedded segment; 531. Necking portion; 6. Elastomer; 71. First adhesive layer; 72. Second adhesive layer. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the claims.

[0030] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0031] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0032] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0033] In the description of this application, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] The technical solutions shown in this application will be described in detail below through specific embodiments. It should be noted that the order of description of the following embodiments is not intended to limit the priority of the embodiments.

[0035] As described in the background section, in related technologies, the lead connectors of magnetic ring coil assemblies are typically led out from the bottom inside the housing and then extended upwards to the outer top of the housing to achieve electrical connection with the metal terminals. This wiring method results in the wire exit positions of the winding coil being significantly higher than their original exit points on the magnetic ring body. During the lead connection process, the upward pulling force can easily cause the bottom surface of the magnetic ring to detach from the bottom surface inside the housing, resulting in the magnetic ring coil assembly being not securely fixed and the overall structure being loose. At the same time, due to poor positioning or the influence of lead lifting, the highest point of the magnetic ring after fixing may exceed the design height of the top surface of the housing, causing the cover plate to be unable to be installed flat and leaving potential reliability issues in the structure.

[0036] Based on this, please refer to Figures 1 to 6 This application provides a magnetic device, including a support body 1, a housing 2, a magnetic ring assembly 3, and terminals 5. The housing 2 is disposed on the support body 1. At least one magnetic ring assembly 3 is disposed on the upper surface of the support body 1 and located inside the housing 2. A winding coil 4 is wound on the magnetic ring assembly 3. A plurality of terminals 5 are disposed on the side of the support body 1, and the terminals of the magnetic ring assembly 3 (i.e., the lead connectors of the winding coil 4) are connected to the terminals 5 on the upper surface of the support body 1.

[0037] Therefore, both terminal 5 and magnetic ring assembly 3 are located on support body 1. The wiring terminal can be attached to the upper surface of support body 1 and reliably connected to terminal 5. That is, the operation direction of the wiring terminal on the upper surface of support body 1 is consistent with the direction of gravity, thereby eliminating the hidden danger of the magnetic ring coil assembly being lifted due to the upward pulling of the lead wire in related technologies. This ensures that magnetic ring assembly 3 is stably fixed on support body 1 and inside housing 2, ensuring that support body 1 and housing 2 are properly installed, and improving the long-term reliability of the device.

[0038] The support 1 can be made of an insulating material to form a flat base structure, such as engineering plastic, ceramic or PCB substrate material. The outer surface of the support 1 is preferably flat to facilitate the stable placement of the magnetic ring assembly 3, the precise setting of the terminals 5 and the stable connection of the housing 2.

[0039] On the other hand, based on the problems existing in the aforementioned related technologies, there are still assembly gaps or loose alignment between the device housing and the cover plate in the related technologies. During the cleaning process at the customer's site, the cleaning fluid can easily seep into the product through these gaps. The liquid that enters is difficult to drain or completely evaporate on its own, thus remaining for a long time. These residual cleaning fluids are in continuous contact with the internal solder joints, lead connectors and other exposed metal conductors, which will cause electrochemical corrosion or chemical corrosion, gradually deteriorating the electrical connection performance, leading to an increase in the failure rate of the product during the testing and use stages, and a significant decrease in long-term reliability.

[0040] Based on this, in one embodiment, the end of the housing 2 facing the support 1 is attached to the upper surface of the support 1 and is sealed to the support 1, so that the housing 2 and the support 1 together form a sealed receiving cavity, protecting the magnetic ring assembly 3 and the electrical connection structure between the wiring terminals and the terminal 5 of the magnetic ring assembly 3 inside it, thereby effectively preventing external contaminants such as cleaning fluid from entering the device, avoiding the problem of long-term retention of cleaning fluid, and improving the long-term reliability of the device.

[0041] In one embodiment, the magnetic device may further include an elastic body 6, which is disposed inside the housing 2 and abuts against the winding coil 4 and the inner wall of the housing 2 respectively. By providing the elastic body 6, its elastic deformation capability can be used to apply a moderate clamping force to the winding coil 4 and the magnetic ring assembly 3 inside the housing 2, which plays a role in auxiliary fixation and buffering. This helps to further suppress the micro-movement of internal components under vibration or temperature changes and improve the overall stability and reliability of the device structure.

[0042] In one embodiment, the housing 2 is snapped onto the support 1 to ensure mechanical locking between the housing 2 and the support 1, improve the connection rigidity and overall structural stability between the housing 2 and the support 1, resist external vibration or impact, and the housing 2 is provided with a cut 22, which extends from one end of the housing 2 facing the support 1 toward the opposite end, that is, the cut 22 forms an opening channel on the side wall of the housing 2, which can serve as a drainage path, so that the cleaning fluid can be discharged outward in a timely manner under gravity or capillary action, avoiding its retention in the internal cavity of the housing 2, thereby reducing the risk of internal component corrosion due to liquid accumulation and improving device reliability.

[0043] Based on the foregoing embodiments, preferably, one end of the housing 2 is open to form a receiving cavity 21 to accommodate the magnetic ring assembly 3 and the winding coil 4. Then, one open end of the housing 2 is attached to the upper surface of the support body 1 and is sealed to the support body 1, and / or one open end of the housing 2 is snapped onto the support body 1, and / or the elastic body 6 abuts against the winding coil 4 and the inner wall of the housing 2 in the receiving cavity 21 respectively.

[0044] In a preferred example, the magnetic device includes a support 1, a housing 2, a magnetic ring assembly 3, and terminals 5. One end of the housing 2 is open to form a receiving cavity 21, and the open end of the housing 2 is attached to the upper surface of the support 1 and sealed to the support 1. An elastic body 6 is disposed in the receiving cavity 21, and the elastic body 6 abuts against the winding coil 4 and the inner wall of the housing 2 respectively. The open end of the housing 2 is snapped onto the support 1. Thus, by combining the sealed connection, internal elastic compression, and external snap-fit ​​fixation, the fixation and vibration resistance of the internal and external structures of the device are improved, and the long-term working reliability and service life of the magnetic device in harsh environments are significantly improved.

[0045] It is understandable that in the practical application of magnetic devices, the combination can be optimized according to the specific application environment. For example, the magnetic device can be combined with an elastic body 6 in the accommodating cavity 21 on the basis of the structure in which one end of the opening of the housing 2 is attached to the upper surface of the support 1 and sealed to the support 1, or a snap-fit ​​design can be combined on the basis of the structure in which one end of the opening of the housing 2 is attached to the upper surface of the support 1 and sealed to the support 1, or an elastic body 6 can be combined in the accommodating cavity 21 on the basis of the structure in which the housing 2 is snapped to the support 1, etc., which will not be elaborated here.

[0046] In specific implementation, based on the structural design where one end of the shell 2 opening is attached to the upper surface of the support 1 and sealed to the support 1, preferably, a first adhesive layer 71 is provided in the contact area between the support 1 and the shell 2. The first adhesive layer 71 connects the support 1 and the shell 2 respectively, thereby fixing and sealing the shell 2 and the support 1 together. That is, by setting the first adhesive layer 71, the micro gaps that may exist at the joint between the shell 2 and the support 1 can be filled and sealed, forming a continuous and reliable sealing barrier, thereby more effectively preventing the intrusion of external liquids or contaminants and improving the overall sealing protection level of the product.

[0047] In the specific implementation process, based on the structural design of the shell 2 being snapped onto the support body 1, preferably, the end of the shell 2 facing the support body 1 is provided with a snap-fit ​​post 23, and the support body 1 is provided with a snap-fit ​​groove 11 corresponding to the snap-fit ​​post 23. During assembly, the snap-fit ​​post 23 is embedded and snapped into the corresponding snap-fit ​​groove 11, thereby realizing the mechanical locking and fixation between the shell 2 and the support body 1.

[0048] The mating structure of the snap-fit ​​post 23 and the snap-fit ​​groove 11 provides a reliable, convenient connection method that does not require additional fasteners. It not only ensures the connection strength and structural stability between the housing 2 and the support 1 and resists vibration and impact during use, but also limits the relative position of the two, which is conducive to achieving precise assembly.

[0049] The cut 22 formed on the shell 2 is not just a surface groove, but completely penetrates along the wall thickness direction of the shell 2. That is, the cut 22 connects and communicates with the accommodating cavity 21 to clarify the discharge path of the cleaning fluid.

[0050] Several cuts 22 are arranged along the outer wall of the housing 2 and located between adjacent terminals 5. The arrangement of cuts 22 makes the elastic deformation of the housing 2 more uniform and symmetrical when subjected to assembly stress or thermal stress, which is conducive to maintaining the stability of the overall structure. At the same time, setting the cuts 22 in the area between adjacent terminals 5 can avoid structural weakening of the installation position of the terminals 5, ensuring that the connection strength and electrical isolation reliability between the terminals 5 and the support body 1 are not affected, and preventing cleaning fluid from accumulating at the terminals 5. This layout takes into account both the assembly convenience of the housing 2 and the mechanical and electrical integrity of the overall structure.

[0051] In specific implementation, based on the structural design that the elastic body 6 is located inside the housing 2 and abuts against the inner wall of the winding coil 4 and the housing 2 respectively, preferably, the elastic body 6 extends along the arrangement direction of the magnetic ring group 3 in the accommodating cavity 21. Specifically, when the magnetic device includes a single magnetic ring group 3, the elastic body 6 extends along the circumference or axial direction of the magnetic ring and covers part of the outer surface of the winding coil 4 and the magnetic ring group 3. When the magnetic device includes multiple parallel magnetic ring groups 3, the elastic body 6 extends along the arrangement direction of these magnetic ring groups and simultaneously contacts the outer surface of multiple magnetic ring groups 3 and the winding coil 4.

[0052] This design enables the elastomer 6 to provide continuous and uniform compression and support along the extension direction of the magnetic ring assembly 3, thereby more effectively suppressing the positional displacement or vibration of the magnetic ring assembly 3 within the housing 2, enhancing its structural stability and resistance to mechanical shock. At the same time, the elastomer 6 extending along the arrangement direction also helps to buffer the thermal expansion differences between different materials when the temperature changes, reducing the impact of thermal stress on the performance of the magnetic ring assembly.

[0053] Based on the aforementioned embodiments, the wiring terminal and the terminal 5 are electrically connected on the upper surface of the support body 1 to form an electrical connection point 5a on the terminal 5. The electrical connection point 5a is located inside the housing 2. Specifically, the lead connector of the winding coil 4 serves as the wiring terminal, and is electrically connected to the corresponding part of the terminal 5 on the upper surface of the support body 1 by welding or conductive bonding, thereby forming an electrical connection point 5a on the terminal 5. The electrical connection point 5a is entirely located within the internal space covered by the housing 2.

[0054] Preferably, the electrical connection point 5a is located inside the accommodating cavity 21, thereby being completely enclosed and protected by the housing 2 and the support 1, improving structural reliability.

[0055] The distance between the electrical connection point 5a and the inner wall of the accommodating cavity 21 is ≥0. This distance ensures that the electrical connection point 5a will not have any unexpected mechanical contact or interference with the housing 2 under any circumstances, thus avoiding the risk of extrusion caused by assembly stress or thermal expansion.

[0056] To further ensure safety and provide assembly tolerance, an inwardly recessed clearance groove 211 is provided on the inner wall of the accommodating cavity 21 at the corresponding position of the electrical connection point 5a. The clearance groove 211 provides additional three-dimensional space for the electrical connection point 5a and its surrounding raised structures (such as solder joints), effectively preventing them from being scratched or compressed during the closing of the housing 2, thereby further protecting the physical integrity and electrical reliability of the electrical connection point.

[0057] Continue to combine Figures 7 to 10 In the specific implementation process, according to the number of terminals 5 arranged on the side of the support body 1, the wiring terminals of each magnetic ring group 3 are electrically connected to the terminals 5 one by one to facilitate clear wiring, or at least one terminal 5 is simultaneously electrically connected to the two wiring terminals of each magnetic ring group 3 to meet specific circuit requirements, such as realizing center tap or parallel connection functions.

[0058] Furthermore, on the upper surface of the support body 1, the two terminals of each magnetic ring group 3 form an electrical connection point 5a on the same terminal 5, or form two electrical connection points 5a that are kept apart. This arrangement of physically separating the two electrical connection points can effectively avoid the problem of incomplete removal of insulating varnish and mutual interference that may occur when the two leads are close together, thereby ensuring the conductivity reliability of each connection point and improving the overall connection quality.

[0059] In one example, the support body 1 is provided with spaced positioning bosses 12, and the magnetic ring group 3 is located between adjacent positioning bosses 12. The side of the positioning boss 12 facing the magnetic ring group 3 matches the outer wall contour of the magnetic ring group 3, and the opposite side of the positioning boss 12 is attached to the inner wall of the housing 2. This structure achieves reliable positioning of the internal magnetic ring group 3 and auxiliary support for the housing 2 covering it through the positioning bosses 12. It not only ensures the accuracy and stability of the magnetic ring group 3 on the support body 1, preventing it from shifting during subsequent processing or use, but also enhances the rigidity of the overall structure and disperses the external stress that may act on the housing 2 through the attachment of the positioning bosses 12 to the inner wall of the housing 2, thereby improving the mechanical stability and reliability of the device.

[0060] In one example, a second adhesive layer 72 (made of adhesive) is provided on the upper surface of the support 1 between adjacent positioning bosses 12. The second adhesive layer 72 connects the magnetic ring assembly 3 and the winding coil 4 between the positioning bosses 12. That is, the second adhesive layer 72 simultaneously contacts and cures the bottom or side surface of the magnetic ring assembly 3 and the partial conductor surface of the winding coil 4 near the bottom, thereby partially fixing the magnetic ring assembly 3 and the winding coil 4 to the support 1.

[0061] Preferably, in order to achieve necessary fixation while minimizing stress constraints caused by the adhesive, the connection area between the second adhesive layer 72 and the magnetic ring group 3 is smaller than the first adhesive value, and the connection area between the second adhesive layer 72 and the winding coil 4 is smaller than the second adhesive value. The first adhesive value is the ratio of the connection area between the second adhesive layer 72 and the magnetic ring group 3 to the total surface area of ​​the magnetic ring group 3, and the second adhesive value is the ratio of the connection area between the second adhesive layer 72 and the winding coil 4 to the total surface area of ​​the winding coil 4.

[0062] Optionally, as a quantifiable implementation method, the first bonding value can be less than 5%, and the second bonding value can be less than 3%. By strictly limiting the bonding area to such a low proportion range, it can be ensured that most of the surfaces of the magnetic ring assembly 3 and the winding coil 4 are in a free state. This local, small-area single-end constraint fixing method can significantly reduce the influence of internal stress caused by adhesive curing shrinkage and device operating temperature changes on the magnetic ring assembly 3, thereby effectively maintaining the stability of the magnetic properties of the magnetic ring material and enabling the device to obtain better and more consistent inductance characteristics and lower core loss.

[0063] In one example, the upper surface of the support 1 is provided with multiple positioning protrusions 13. The positioning protrusions 13 are arranged at intervals on the support 1 and are arranged around the magnetic ring group 3. That is, the positioning protrusions 13 are arranged at intervals around the circumference of the magnetic ring group 3, thereby forming a circumferential and limiting effect on the magnetic ring group 3 in multiple directions. The side of the positioning protrusions 13 away from the magnetic ring group 3 is provided with a guide slope. Thus, the circumferential positioning protrusions 13 achieve a more sufficient and uniform radial limiting effect on the magnetic ring group 3, effectively preventing its movement in any horizontal direction. At the same time, based on the guide slope of the positioning protrusions 13, an inherent guide path can be formed between the support 1 and the housing 2. The guide slope can extend from top to bottom and from outside to inside, so as to provide guidance when the housing 2 contacts the inner wall of the opening end of the housing 2 during the assembly process. This allows the housing 2 to be smoothly introduced and accurately positioned onto the support 1, effectively reducing assembly resistance, improving assembly efficiency and accuracy, and also helping to protect the related structures from scratches during the assembly process, thus enhancing the overall assembly stability.

[0064] In the specific implementation process, continue to refer to Figure 11 and Figure 12Several terminals 5 are arranged at intervals on the side of the support body 1, and each terminal 5 covers the side surface and part of the upper and lower surfaces of the support body 1, thereby forming a three-dimensional covering interface for fixing and connecting. This three-dimensional covering structure provides a stable interface for the wiring terminal to make electrical connection with the terminal 5 on the upper surface of the support body 1. The wiring terminal can be directly attached to the upper surface of the support body 1 and reliably connected with the part of the terminal 5 located on the upper surface.

[0065] This connection method fundamentally eliminates the risk of the magnetic ring coil assembly being lifted due to the need to pull the lead wire upwards to the outside of the top of the housing in related technologies. It ensures that the magnetic ring assembly 3 can be stably attached and fixed to the support 1 and the housing 2 installed later. At the same time, the stable positioning of the magnetic ring assembly 3 also provides a flat foundation for the installation of the housing 2, ensuring that the support 1 and the housing 2 can be installed tightly and accurately. As a result, the structural stability and long-term operational reliability of the device are significantly improved.

[0066] Preferably, the terminal 5 is arranged in a 'U' or 'C' shape, so that the terminal 5 can contact and be fixed with the corresponding surface of the support 1 from the top, side and bottom. This not only provides a larger welding or bonding area to enhance the bonding firmness and conductivity reliability, but its three-dimensional covering shape also significantly improves the tensile and torsional mechanical strength of the terminal 5 on the support 1, ensuring the long-term stability of the external circuit connection.

[0067] In one example, terminal 5 includes electrode segment 51 and at least one connecting segment 52. The connecting segment 52 is connected to the upper surface of support 1 and is electrically connected to the terminal to form an electrical connection point 5a. Electrode segment 51 is connected to the side surface and part of the lower surface of support 1 and can be used to achieve electrical interconnection with external circuits.

[0068] Preferably, the terminal 5 further includes an embedded section 53, which is embedded inside the support body 1. Its two ends are connected to the connecting section 52 located on the upper surface and the electrode section 51 located on the side and lower surfaces, respectively. This makes the terminal 5 form an integral structure that is anchored inside the support body 1 and conducts through multiple surfaces on the outside. This design not only enhances the fixing strength of the terminal 5 in the support body 1 and prevents it from loosening or falling off, but also provides a stable path for the conduction of current between different parts inside the terminal 5, thereby improving the reliability of the electrical connection.

[0069] Optionally, the electrode segment 51 is arranged in an 'L' shape, which covers the side surface of the support 1 and extends to part of the lower surface. Based on this, the connecting segment 52 can be matched with the 'L' shaped electrode segment 51 to form a 'C' shaped structure. The 'C' shaped structure covers the side of the support 1, with the connecting segment 52 located on the upper surface for internal connection and the electrode segment 51 located on the side and lower surface for external connection, realizing the electrical transition between the inside and outside. The terminal 5 may also include the connecting segment 52, the electrode segment 51 and the embedded segment 53 embedded in the support 1. The three can be connected to form a 'U' shaped structure. The 'U' shaped structure covers and anchors to the edge of the support 1 from the top, side and bottom, providing greater mechanical holding force and a more stable three-dimensional conductive path.

[0070] It should be noted that the side of the embedded section 53 is provided with a necking portion 531. This necking portion 531 is formed by the side of the embedded section 53 contracting towards its own central axis, so that the embedded section 53 has a reduced cross-sectional area at this part. The design of the necking portion 531 increases the contact area and mechanical interlocking effect between the embedded section 53 and the support body 1, thereby improving the anchoring strength and pull-out resistance of the terminal 5 in the support body 1. On the other hand, its contraction structure can adjust the heat conduction path during hot working processes such as welding, which helps to reduce the excessive diffusion of working heat to other parts of the terminal 5, thereby protecting the reliability of the internal electrical connection point. Continue to refer to Figure 13 and Figure 14 In this embodiment of the application, the support body 1 can be a PCB base. The magnetic device includes a PCB base, a housing 2, a magnetic ring group 3 and terminals 5. The housing 2 is disposed on the PCB base. At least one magnetic ring group 3 is disposed on the upper surface of the PCB base and located inside the housing 2. A winding coil 4 is wound on the magnetic ring group 3. Several terminals 5 are disposed on the side of the PCB base, and the wiring terminals of the magnetic ring group 3 are connected to the terminals 5 on the upper surface of the PCB base.

[0071] Preferably, the PCB base is composed of an insulating substrate and a conductive copper foil circuit layer covering it. The insulating substrate provides structural support and electrical isolation, while the copper foil circuit is etched to form a specific electrical connection pattern. The terminal 5 can be formed on the copper foil circuit through deposition and electroplating processes.

[0072] In one example, the PCB base not only serves as the mounting foundation for components such as the magnetic ring assembly 3 and the housing 2, but also integrates and expands electrical functions through its internal wiring. Similar to the aforementioned embodiments, the magnetic ring assembly 3 can be directly installed on the upper surface area of ​​the PCB base by bonding, snap-fitting, or cooperating with other positioning structures. The housing 2 can be directly covered on the PCB base. The two can be sealed and fixed by snap-fitting structures along the periphery, by adhesive, or by screws. The edges of the PCB base can be designed with corresponding connection holes, slots, or adhesive areas to accommodate the installation of the housing 2. The independently configured terminals 5 in the aforementioned embodiments can be connected to the electrical components fabricated on the PCB base. The electrode terminals, which are replaced or partially replaced by the extreme terminals, are composed of copper foil pads on the PCB surface, plated hole walls on the sides, and pad arrays (such as BGA) that may extend to the bottom surface, forming a three-dimensional electrical connection interface. The terminals of the magnetic ring group 3 can be directly soldered to the corresponding copper foil pads on the upper surface of the PCB base, thereby forming an electrical connection point 5a. This connection point is also located within the protective space covered by the housing 2. The copper foil lines inside the PCB base can be flexibly designed to achieve complex electrical connections such as series, parallel, or center taps required between different magnetic ring groups and between the windings and external interfaces, without the need for additional flying wires or jumpers, thus improving the reliability and consistency of the connection.

[0073] In the specific implementation process, continue to combine Figure 15 and Figure 19 In the magnetic device of this application embodiment, the magnetic ring group 3 may include a transformer magnetic ring 31, the winding coil 4 is wound on the transformer magnetic ring 31, and the terminal (lead connector of the winding coil 4) is connected to the terminal 5 on the upper surface of the support body 1.

[0074] Understandably, depending on the actual installation requirements or working environment, there should be at least one magnetic ring group 3, that is, at least one transformer magnetic ring 31. Then, the support body 1 can also be designed with multiple transformer magnetic rings 31 corresponding to the arrangement direction of the terminals 5, so as to form a multi-channel or higher power level converter, so as to effectively enhance the function and adaptability of the magnetic device.

[0075] On the other hand, the magnetic ring group 3 includes a transformer magnetic ring 31 and a common-mode magnetic ring 32. The winding coil 4 is wound on the transformer magnetic ring 31 and the common-mode magnetic ring 32, and the terminal is connected to the terminal 5 on the upper surface of the support body 1. Thus, the magnetic device of this application performs voltage conversion based on the transformer magnetic ring 31 and signal filtering based on the common-mode magnetic ring 32. At the same time, the combination of the transformer magnetic ring 31 and the common-mode magnetic ring 32 can enhance the anti-interference ability of the device in complex electromagnetic environments and ensure the normal operation of the device in high-noise environments. That is, the compact layout of the combination of the transformer magnetic ring 31 and the common-mode magnetic ring 32 makes the overall structure of the magnetic device more miniaturized and its functions more diversified.

[0076] Similarly, depending on the actual installation requirements or working environment, there should be at least one magnetic ring group 3, that is, at least one transformer magnetic ring 31 and one common mode magnetic ring 32. Then, the support body 1 can also be designed as a combination of multiple transformer magnetic rings 31 and common mode magnetic rings 32 with corresponding terminal 5 arrangement directions, for example, to form a multi-channel isolation filter channel to effectively enhance the function and adaptability of magnetic devices.

[0077] Of course, the type and number of functional magnetic rings included in the magnetic ring group 3 in this application embodiment are not limited to the above examples. They can also be flexibly adjusted and combined according to the actual circuit topology, installation space limitations or the needs of a specific electromagnetic environment.

[0078] For example, the magnetic ring group 3 can be configured as a dual common-mode magnetic ring structure containing two common-mode magnetic rings 32 to further improve the common-mode noise suppression capability. In addition, the magnetic ring group 3 can also include a differential-mode inductor magnetic ring for filtering differential-mode noise, or integrate other special magnetic rings that meet special performance requirements. Through this flexible configuration design, the magnetic device of this application can adapt to a wider range of application scenarios and circuit requirements. For example, in communication interfaces that require high noise suppression, power modules that require complex filtering networks, or specific signal processing units, the optimal performance and miniaturization design can be achieved by selecting the appropriate magnetic ring type and combination.

[0079] This application also provides an electronic device, which may include the magnetic devices described in the above embodiments. For other working principles and processes of the electronic device in this embodiment, please refer to the description of magnetic devices in the foregoing embodiments of the present invention, which will not be repeated here.

[0080] The magnetic devices and electronic devices provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. It should be noted that the descriptions of each embodiment in this application have different emphases. Parts not described in detail or in a certain embodiment can be referred to the relevant descriptions of other embodiments.

[0081] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. The technical features of the technical solution of this application can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are also included within the patent protection scope of this application, as long as the combination of these technical features does not contradict each other.

Claims

1. A magnetic device, characterized in that, include: Support (1); The housing (2) has an opening at one end to form a receiving cavity (21), and the opening end of the housing (2) is attached to the upper surface of the support (1) and is sealed to the support (1); At least one of the magnetic ring groups (3) is disposed on the upper surface of the support (1) and located in the accommodating cavity (21), and a winding coil (4) is wound on the magnetic ring group (3). Terminal (5), a plurality of terminals (5) are disposed on the side of the support (1), and the wiring terminals of the magnetic ring assembly (3) are connected to the terminals (5) on the upper surface of the support (1).

2. The magnetic device as described in claim 1, characterized in that, A first adhesive layer (71) is provided in the bonding area between the support (1) and the shell (2), and the first adhesive layer (71) connects the support (1) and the shell (2) respectively.

3. The magnetic device as described in claim 1, characterized in that, The wiring terminal and the terminal (5) are electrically connected on the upper surface of the support (1) to form an electrical connection point (5a) on the terminal (5), the electrical connection point (5a) being located inside the accommodating cavity (21) and the distance between it and the inner wall of the accommodating cavity (21) is ≥0.

4. The magnetic device as described in claim 3, characterized in that, An air-proof groove (211) is provided on the inner wall of the accommodating cavity (21) at the location corresponding to the electrical connection point (5a).

5. The magnetic device as described in claim 1, characterized in that, Depending on the number of terminals (5) arranged on the side of the support (1), the terminals of each magnetic ring group (3) are electrically connected to the terminals (5) in a one-to-one correspondence, or at least one terminal (5) is electrically connected to the two terminals of each magnetic ring group (3) simultaneously.

6. The magnetic device as described in claim 5, characterized in that, On the upper surface of the support (1), the two terminals of each magnetic ring group (3) form an electrical connection point (5a) on the same terminal (5), or form two electrical connection points (5a) that are kept apart.

7. The magnetic device as described in claim 1, characterized in that, The support (1) is provided with spaced positioning bosses (12), the magnetic ring group (3) is located between adjacent positioning bosses (12), the side of the positioning boss (12) facing the magnetic ring group (3) matches the outer wall contour of the magnetic ring group (3), and the other side of the positioning boss (12) is in contact with the inner wall of the housing (2).

8. The magnetic device as described in claim 7, characterized in that, The support (1) is provided with a second adhesive layer (72), which connects the magnetic ring group (3) and the winding coil (4) between adjacent positioning bosses (12).

9. The magnetic device as described in claim 8, characterized in that, The connection area between the second adhesive layer (72) and the magnetic ring assembly (3) is less than the first adhesive value, and the connection area between the second adhesive layer (72) and the winding coil (4) is less than the second adhesive value.

10. The magnetic device as claimed in claim 1, characterized in that, The support (1) is provided with positioning protrusions (13) arranged at intervals, and the positioning protrusions (13) are wrapped around the magnetic ring group (3), and the side of the positioning protrusions (13) facing away from the magnetic ring group (3) is provided with a guide slope.

11. The magnetic device as described in claim 5, characterized in that, A plurality of terminals (5) are spaced apart on the side of the support (1), and each terminal (5) covers the side surface and part of the upper and lower surfaces of the support (1).

12. The magnetic device as claimed in claim 1, characterized in that, The terminal (5) is arranged in a 'mouth' or 'C' shape.

13. The magnetic device as claimed in claim 11, characterized in that, The terminal (5) includes an electrode segment (51) and at least one connecting segment (52). The connecting segment (52) is connected to the upper surface of the support (1) and is electrically connected to the terminal to form an electrical connection point (5a). The electrode segment (51) is connected to the side surface and part of the lower surface of the support (1).

14. The magnetic device as described in claim 13, characterized in that, The support (1) includes a PCB base.

15. The magnetic device as described in claim 13, characterized in that, The terminal (5) further includes an embedded section (53), which is embedded in the support (1), and the two ends of the embedded section (53) are respectively connected to the connecting section (52) and the electrode section (51).

16. The magnetic device as claimed in claim 15, characterized in that, The side of the embedded section (53) is provided with a necked portion (531), which narrows from the side of the embedded section (53) toward the center of the embedded section (53).

17. The magnetic device as claimed in claim 1, characterized in that, The magnetic ring assembly (3) includes at least one transformer magnetic ring (31), and the winding coil (4) is wound on the transformer magnetic ring (31).

18. The magnetic device as claimed in claim 1, characterized in that, The magnetic ring assembly (3) includes a transformer magnetic ring (31) and a common-mode magnetic ring (32), and the winding coil (4) is wound on the transformer magnetic ring (31) and the common-mode magnetic ring (32).

19. The magnetic device as claimed in claim 1, characterized in that, Several magnetic ring groups (3) are arranged along the length direction of the support (1), and the winding coils (4) are respectively wound on each of the magnetic ring groups (3).

20. An electronic device, characterized in that, Includes the magnetic device as described in any one of claims 1 to 19.

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