High-bonding-strength inductor and electronic equipment

Abstract

The utility model relates to the technical field of magnetic devices, and discloses a high-bonding-strength inductor and electronic equipment, the high-bonding-strength inductor comprises an integrated magnetic main body, a flat winding coil and patch electrodes, the flat winding coil is configured in the integrated magnetic main body, patch connectors are led out from the upper end and the lower end of the flat winding coil respectively, and the patch connectors are connected with the integrated magnetic main body. The patch electrode comprises first fixing parts and second fixing parts, the first fixing parts are symmetrically attached to the outer wall of the bottom end of the integrated magnetic body and are correspondingly and electrically connected with the patch connectors, and the second fixing parts are integrally connected to the two ends of the first fixing parts; the first fixing part is embedded in the side face of the integrated magnetic body and extends to the side face of the integrated magnetic body from the bottom end of the integrated magnetic body in the first direction, the first direction is the extending direction of the upper end and the lower end of the integrated magnetic body, and the second fixing part is partially embedded in the side face of the integrated magnetic body. The connection strength and reliability of the device are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of magnetic device, in particular to a high bonding strength inductor and electronic equipment. BACKGROUND

[0002] With the rapid development of automotive electronics technology, the performance and reliability of components and devices for vehicle-mounted equipment are required to be higher, and the inductor as one of the key electronic components is widely used in vehicle-mounted power management system, signal filtering and energy storage scenes, and the vehicle-mounted environment has the characteristics of strong vibration, large acceleration and sharp temperature change, which makes the inductor need to withstand extreme mechanical impact and thermal shock during use. The inductor device in the related technology, one connection structure is a planar bottom electrode structure, which adopts surface mount technology (SMT) to connect with external devices, small in size, convenient for high-density installation, but the mechanical stress reliability of this kind of patch structure product is low, the bonding force with PCB after welding is weak or virtual welding phenomenon occurs, which is easy to cause vibration and falling off, and quality hidden trouble is caused. This situation needs to be changed. CONTENT OF THE INVENTION

[0003] In view of this, the present application provides a high bonding strength inductor and electronic equipment to solve the above-mentioned technical problems.

[0004] To achieve the above purpose, according to the first aspect, the technical scheme adopted is:

[0005] A high bonding strength inductor, comprising an integrated magnetic body, a flat winding coil and a patch electrode, the flat winding coil is arranged in the integrated magnetic body, and the upper / lower end of the flat winding coil respectively leads out a patch connector, the patch electrode comprises a first fixed part and a second fixed part, the first fixed part is symmetrically attached to the bottom end outer wall of the integrated magnetic body and corresponds to the electrical connection with the patch connector, the second fixed part is integrally connected to both ends of the first fixed part, and extends from the bottom end of the integrated magnetic body to the side surface of the integrated magnetic body along a first direction, wherein the first direction is the extension direction of the upper and lower ends of the integrated magnetic body, and the second fixed part is partially embedded into the side surface of the integrated magnetic body.

[0006] The present application is further provided that the second fixed part integrally connected to both ends of the first fixed part and the first fixed part form a "U" shaped structure.

[0007] The present application is further provided that the first fixed part partially covers the bottom end of the integrated magnetic body along a second direction, wherein the second direction is perpendicular to the first direction.

[0008] The first fixed parts are arranged on the same plane.

[0009] The patch joint comprises a vertical connecting part and a horizontal connecting part, one end of the vertical connecting part is led out from the upper / lower end of the flat winding coil, the other end of the vertical connecting part is integrally connected with one end of the horizontal connecting part, and the horizontal connecting part is attached to the first fixed part and welded with the first fixed part.

[0010] The patch joint further comprises a fixed connecting part, the fixed connecting part is embedded in the integrated magnetic body and arranged opposite to the vertical connecting part along the first direction, and the fixed connecting part is integrally connected with the other end of the horizontal connecting part.

[0011] In the first direction, the height of the fixed connecting part relative to the first fixed part is less than the shortest distance between the flat winding coil and the first fixed part.

[0012] The vertical connecting part and the fixed connecting part are parallel to the first direction, and the horizontal connecting part is parallel to the second direction.

[0013] An inner embedding groove is formed on the side surface of the integrated magnetic body corresponding to the second fixed part, the second fixed part is matched on the inner embedding groove, and the second fixed parts at both ends of the first fixed part extend to the same height along the first direction on the side surface of the integrated magnetic body.

[0014] According to the second aspect, the technical scheme adopted is:

[0015] An electronic device comprising the high-bonding-strength inductor according to any one of the above embodiments.

[0016] In summary, compared with the prior art, the present application discloses a high-bonding-strength inductor and an electronic device, the high-bonding-strength inductor comprising an integrated magnetic body, a flat winding coil and a patch electrode, wherein the flat winding coil is arranged in the integrated magnetic body, the first fixed part of the patch electrode is symmetrically attached to the bottom end outer wall of the integrated magnetic body and corresponds to the patch joint of the flat winding coil for electrical connection, the second fixed part is integrally connected to both ends of the first fixed part and extends from the bottom end of the integrated magnetic body to the side surface of the integrated magnetic body along the first direction, and the second fixed part is partially embedded in the side surface of the integrated magnetic body, that is, through the above arrangement, the structural connection strength of the inductor itself is improved, the connection strength of the inductor with the external environment is improved, and the overall quality of the inductor is ensured. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a three-dimensional structural diagram of the high bonding strength inductor of this application;

[0019] Figure 2 This is a schematic diagram of the internal structure of the high bonding strength inductor of this application. Detailed Implementation

[0020] 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 numerals in different drawings denote 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 appended claims.

[0021] 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.

[0022] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0023] 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.

[0024] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] The technical solutions shown in the present application will be described in detail below through specific embodiments. It should be noted that the description order of the following embodiments is not limited as the priority order of the embodiments.

[0026] Please refer to Figure 1 and Figure 2 The high-bonding-strength inductor of the present application includes a one-piece magnetic body 1, a flat winding coil 2 and a patch electrode 3.

[0027] In the specific implementation process, the flat winding coil 2 is arranged in the one-piece magnetic body 1, and the upper / lower ends of the flat winding coil 2 respectively lead out patch connectors 4, the patch electrode 3 includes a first fixed part 31 and a second fixed part 32, the first fixed part 31 is symmetrically attached to the outer wall of the bottom end of the one-piece magnetic body 1 and corresponds to the electrical connection with the patch connector 4, the second fixed part 32 is integrally connected to both ends of the first fixed part 31, and extends from the bottom end of the one-piece magnetic body 1 to the side surface of the one-piece magnetic body 1 along a first direction, wherein the first direction is the extension direction of the upper and lower ends of the one-piece magnetic body 1, and the second fixed part 32 is partially embedded in the side surface of the one-piece magnetic body 1.

[0028] Then the flat winding coil 2 of the inductor of the present application is tightly integrated in the one-piece magnetic body 1, saving device space, and due to the one-piece design of the magnetic body, the structural stability of the device can be improved, reducing the risk of looseness or deformation, thereby improving the overall reliability of the device, and the first fixed part 31 is symmetrically attached to the outer wall of the bottom end of the one-piece magnetic body 1 and corresponds to the electrical connection with the patch connector 4, thereby ensuring the internal electrical stability of the device, achieving a solid physical connection, and the symmetric structure of the first fixed part 31 can disperse stress, reducing the risk of deformation or false welding during the welding process.

[0029] The second fixing part 32 is integrally connected to both ends of the first fixing part 31 and extends along the first direction to the side of the integral magnetic body 1. This extension design can increase the connection between the patch electrode 3 and the integral magnetic body 1, and also prevent the inductor from loosening or falling off after welding to the external environment, and enhance the vibration resistance. That is, the second fixing part 32 is partially embedded in the side of the integral magnetic body 1 to improve the physical strength and mechanical stability of the connection. Especially when subjected to vibration or temperature changes, it reduces the loosening of the connection caused by thermal expansion or mechanical impact, and ensures the long-term stability of the inductor.

[0030] On the other hand, the side extension design of the second fixing part 32 can also provide an observation standard when the inductor is soldered to the external environment (such as PCB pads). Especially in the SMT (Surface Mount Technology) process application scenario, this can expose the inductor solder joints on the side, that is, clearly show the solder climb height, which is convenient for inspection by automated optical inspection (AOI) equipment after mounting, thereby reducing the difficulty of detecting soldering defects, helping to improve product consistency and reliability, improve inspection efficiency, and ensure the overall quality of the inductor.

[0031] It should be noted that this embodiment constructs an XYZ spatial coordinate system, in order to... Figure 1 For example, the X-axis direction can be regarded as the first direction, the Y-axis direction as the second direction, and the Y-axis direction as the third direction. The first direction can also be regarded as the extension direction of the upper and lower ends of the integrated magnetic body 1, that is, the direction perpendicular to the end faces of the upper and lower ends of the integrated magnetic body 1. Here, the upper and lower ends of the integrated magnetic body 1 are the top and bottom ends of the integrated magnetic body 1. The second direction can also be regarded as the extension direction of the left and right sides of the integrated magnetic body 1. The third direction can also be regarded as the extension direction of the front and rear ends of the integrated magnetic body 1. Of course, this embodiment is not limited to this. XYZ can also be any other direction that is perpendicular to each other in space in actual needs, which will not be elaborated here.

[0032] In one embodiment, the second fixing part 32, integrally connected to both ends of the first fixing part 31, forms a "U"-shaped structure with the first fixing part 31.

[0033] The U-shaped patch electrode 3 provides additional mechanical support for the connection with the integrated magnetic body 1, and the second fixing part 32 serves as an extension component, connecting the two ends of the first fixing part 31. This allows the overall structure to better disperse stress when subjected to external mechanical impact, avoiding local stress concentration and reducing the risk of device damage under vibration or thermal shock.

[0034] Preferably, the second fixing part 32 at both ends of the first fixing part 31 extends to the same height along the first direction on the side of the integrated magnetic body 1, thereby ensuring that the stress between the first fixing part 31 and the second fixing part 32 can be evenly distributed throughout the connection area of the integrated magnetic body 1, thereby reducing damage or failure caused by local stress concentration, ensuring that the second fixing part 32 forms a stable connection on the side of the integrated magnetic body 1, making the welding part more secure in long-term use, especially in vehicle application environment, facing frequent vibration and temperature change, this design is particularly important.

[0035] In one embodiment, an embedded groove (not shown) is formed on the side of the integrated magnetic body 1 corresponding to the second fixing part 32, and the second fixing part 32 is matched on the embedded groove, thereby further ensuring the connection strength of the patch electrode 3 and the integrated magnetic body 1.

[0036] It should be noted that the integrated magnetic body 1 is designed in a rectangular body structure and is integrally pressed and formed from a magnetic material, so that the rectangular body structure of the integrated magnetic body 1 can effectively save space when arranged on the PCB, facilitate close arrangement with other components, improve the integration of the circuit board, simplify the mold design, facilitate automated production and standardized manufacturing, and reduce production costs. The integrated pressing and forming of the magnetic material eliminates the structure splicing point, avoids the problems of loosening, cracking or falling off of the integrated magnetic body 1 due to uneven stress or long-term use at the splicing point, and makes the integrated magnetic body 1 have higher vibration resistance and impact resistance. The integrally pressed magnetic material can realize uniform distribution of magnetic properties, reduce magnetic loss, optimize the magnetic flux distribution of the inductor, and improve the overall performance of the inductor.

[0037] In the specific implementation process, the first fixing part 31 partially covers the bottom end of the integrated magnetic body 1 along the second direction, thereby maximizing the connection area of the first fixing part 31 at the bottom end of the integrated magnetic body 1, thereby improving the physical strength and mechanical stability of the inductor and the PCB pad connection.

[0038] Preferably, a set interval is maintained between the first fixing parts 31 to ensure the electrical isolation characteristics of the first fixing parts 31, effectively avoiding possible electrical contact or short circuit between the first fixing parts 31, and the side of the first fixing part 31 away from the integrated magnetic body 1 is located on the same plane, to ensure that the contact surface of the first fixing part 31 with the PCB is flat, avoiding poor welding (such as virtual welding or poor contact) due to unevenness during welding, improving the welding quality, also helping to maintain consistent contact pressure during the welding process, avoiding the problem of poor contact caused by uneven or asymmetric welding points, ensuring firm and reliable welding.

[0039] In one embodiment, the patch joint 4 includes a vertical connecting part 41 and a horizontal connecting part 42, one end of the vertical connecting part 41 is led out from the upper / lower end of the flat winding coil 2, the other end of the vertical connecting part 41 is integrally connected with one end of the horizontal connecting part 42, and the horizontal connecting part 42 is attached to and welded with the first fixed part 31, thereby ensuring the large-area effective connection of the horizontal connecting part 42 of the patch joint 4 with the first fixed part 31, ensuring the connection strength of the patch joint 4 with the patch electrode 3, that is, a larger welding contact area helps to improve the welding strength, reduces the risk of false welding or poor contact, enhances the stability of the assembly under extreme conditions such as vibration and thermal change, and at the same time, the welding connection with a larger area can effectively reduce the electrical contact resistance, ensuring smooth transmission of current, which helps to improve the working efficiency and performance of the inductor and reduce the heat or power loss caused by excessive resistance.

[0040] Optionally, the patch joint 4 further includes a fixed connecting part 43, which is embedded in the integrated magnetic body 1 and arranged opposite to the vertical connecting part 41 along the first direction, and the fixed connecting part 43 is integrally connected with the other end of the horizontal connecting part 42, so that the design of the fixed connecting part 43 provides additional mechanical fixing support for the patch joint 4 in the integrated magnetic body 1, effectively avoiding possible mechanical displacement or loosening of the patch joint 4, and the integration of the fixed connecting part 43 with the vertical connecting part 41 and the horizontal connecting part 42 helps to disperse the mechanical stress of the connecting parts to more areas, avoiding local overload, and the fixed connecting part 43 is embedded in the integrated magnetic body 1, enhancing the mechanical impact resistance of the device, especially in vehicle-mounted or other high-vibration environments, which can effectively withstand external vibration impact without causing connection rupture or failure, to ensure device reliability.

[0041] It should be noted that in the first direction, the height of the fixed connecting part 43 relative to the first fixed part 31 is ≤ the shortest distance between the flat winding coil 2 and the first fixed part 31, based on this design, the height of the fixed connecting part 43 can be strictly controlled, so that the fixed connecting part 43 does not exceed the key space between the flat winding coil 2 and the patch electrode 3, avoiding possible structural interference or electrical short circuit, and the height limitation makes the space inside the inductor device be reasonably distributed, avoiding the problem of increased component stacking or manufacturing difficulty caused by the fixed connecting part 43 being too high, which helps to maintain the low thickness characteristics of the inductor device as a whole, and is particularly suitable for application scenarios requiring compact size.

[0042] The vertical connecting part 41 and the fixed connecting part 43 are parallel to the first direction, and the horizontal connecting part 42 is parallel to the second direction, so that the patch joint 4 occupies a small space in the integrated magnetic body 1, redundant structures are avoided, and the problem of electromagnetic interference caused by complex wiring design is avoided. The design that the horizontal connecting part 42 is parallel to the second direction ensures that it is large-area attached to the first fixed part 31, so as to provide a larger electrical contact area, reduce the contact resistance of electrical connection, and improve the overall electrical performance of the inductor.

[0043] The application further discloses an electronic device comprising the high-bond-strength inductor according to any one of the foregoing embodiments. For other working principles and processes of the electronic device, refer to the foregoing description of the high-bond-strength inductor.

[0044] The high-bond-strength inductor and the electronic device are described in detail above. The principles and implementation manners of the application are described by using specific examples. It should be noted that the description of each embodiment in the application focuses on different aspects. The parts not described or recorded in a certain embodiment can be referred to the relevant description of other embodiments.

[0045] The above is only the preferred embodiment of the application, and does not limit the patent scope of the application. Each technical feature of the technical solution of the application can be combined arbitrarily. In order to make the description simple, each technical feature in the foregoing embodiments is not described in all possible combinations. Any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields, as long as the combination of technical features does not exist contradiction, is also included in the patent protection scope of the application.

Claims

1. A high bonding strength inductor, characterized in that, The device includes an integrated magnetic body, a flat winding coil, and patch electrodes. The flat winding coil is disposed within the integrated magnetic body, and patch connectors are respectively led out from the upper and lower ends of the flat winding coil. The patch electrodes include a first fixing part and a second fixing part. The first fixing part is symmetrically attached to the bottom outer wall of the integrated magnetic body and electrically connected to the patch connectors. The second fixing part is integrally connected to both ends of the first fixing part and extends from the bottom end of the integrated magnetic body to the side of the integrated magnetic body along a first direction, wherein the first direction is the extension direction of the upper and lower ends of the integrated magnetic body, and the second fixing part is partially embedded in the side of the integrated magnetic body.

2. The high bonding strength inductor as described in claim 1, characterized in that, The second fixing part, which is integrally connected to both ends of the first fixing part, forms a "U" shaped structure with the first fixing part.

3. The high bonding strength inductor as described in claim 1, characterized in that, The first fixing part partially covers the bottom end of the integrated magnetic body along the second direction, wherein the second direction is perpendicular to the first direction.

4. The high bonding strength inductor as described in claim 3, characterized in that, The first fixing parts are spaced apart by a set interval, and the side of the first fixing parts that is away from the integrated magnetic body is located on the same plane.

5. The high bonding strength inductor as described in claim 3, characterized in that, The patch connector includes a vertical connecting part and a horizontal connecting part. One end of the vertical connecting part is led out from the upper / lower end of the flat winding coil. The other end of the vertical connecting part is integrally connected to one end of the horizontal connecting part. The horizontal connecting part is attached to the first fixing part and welded to the first fixing part.

6. The high bonding strength inductor as described in claim 5, characterized in that, The patch connector also includes a fixing connection part, which is embedded in the integrated magnetic body and arranged opposite to the vertical connection part along the first direction, and the other end of the fixing connection part is integrally connected to the horizontal connection part.

7. The high bonding strength inductor as described in claim 6, characterized in that, In the first direction, the height of the fixed connection relative to the first fixed part is less than or equal to the shortest distance between the flat winding coil and the first fixed part.

8. The high bonding strength inductor as described in claim 6, characterized in that, The vertical connecting part and the fixed connecting part are parallel to the first direction, and the horizontal connecting part is parallel to the second direction.

9. The high bonding strength inductor as described in claim 1, characterized in that, An embedded groove is recessed on the side of the integrated magnetic body and corresponding to the second fixing part. The second fixing part is matched on the embedded groove, and the second fixing parts at both ends of the first fixing part extend along the first direction to the same height on the side of the integrated magnetic body.

10. An electronic device, characterized in that, Including the high bonding strength inductor as described in any one of claims 1 to 9.

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