High-reliability inductor and electronic equipment

Abstract

The utility model relates to the technical field of magnetic devices, and discloses a high-reliability inductor and electronic equipment.The inductor comprises a magnetic body, functional electrodes and a reinforcing groove, the functional electrodes are arranged at the lower end of the magnetic body at intervals, and each functional electrode comprises a first electrode part and a second electrode part which are integrally connected; the first electrode part extends from the lower end of the magnetic main body to the side wall of the magnetic main body along a first direction, and the first direction is the extension direction of the upper end and the lower end of the magnetic main body; the first electrode part and the second electrode part respectively partially cover the side wall of the magnetic main body and the lower end of the magnetic main body along a second direction perpendicular to the first direction, and the plurality of reinforcing groove bodies are arranged at the joint of the first electrode part and the second electrode part; and a preset interval is kept between every two adjacent reinforcing groove bodies. The reliability of the inductor is improved.

Description

TECHNICAL FIELD

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

[0002] With the rapid development of the automotive electronics industry, the types and quantities of electronic components in vehicles are increasing, and the functions are becoming more complex. To meet the stringent use environment and long life requirements, the reliability requirements of automotive electronic components are increasingly strict, especially mechanical reliability and soldering performance have become one of the key evaluation indicators. For example, vehicles often face complex working conditions such as vibration, drop, mechanical impact, and temperature change during operation, which puts higher requirements on the connection strength of components and PCBs to ensure system stability and reliability.

[0003] The existing inductor, as an important component in automotive electronics, is widely used in filtering, energy storage, and electromagnetic interference suppression fields. Its core structure is usually composed of a magnetic main body, a coil, and electrodes. However, in high-vibration, high-impact, and high-temperature environments, the connection between the traditional inductor and the PCB soldering point is easily affected by mechanical stress concentration and thermal stress fatigue, leading to soldering point cracking, reduced conduction performance, or even component failure. This situation needs to be changed. CONTENT OF THE INVENTION

[0004] In view of this, the present application provides a high-reliability inductor and electronic equipment to solve the above-mentioned technical problems.

[0005] To achieve the above purpose, according to the first aspect, the technical scheme adopted is:

[0006] A high-reliability inductor includes a magnetic main body, a functional electrode, and a reinforced slot body. The functional electrode is arranged at the lower end of the magnetic main body with a certain interval. The functional electrode includes a first electrode part and a second electrode part connected as one. The first electrode part extends from the lower end of the magnetic main body to the side wall of the magnetic main body along a first direction, which is the extension direction of the upper and lower ends of the magnetic main body. The first electrode part and the second electrode part partially cover the side wall of the magnetic main body and the lower end of the magnetic main body, respectively, along a second direction perpendicular to the first direction. A plurality of reinforced slot bodies are arranged at the connection between the first electrode part and the second electrode part, and the adjacent reinforced slot bodies are kept at a predetermined interval.

[0007] The present application further provides that the magnetic main body is designed in a rectangular body structure and is integrally pressed and formed from a magnetic material.

[0008] The first electrode part and the second electrode part are designed as a plane on the side away from the magnetic body and are plated with a metal functional layer.

[0009] The metal functional layer comprises at least one of a copper layer, a nickel layer or a tin layer.

[0010] The plurality of reinforcing grooves are arranged uniformly along the second direction at the connection of the first electrode part and the second electrode part.

[0011] The connection of the first electrode part and the second electrode part has a first design length in the second direction, and each of the reinforcing grooves has a second design length in the second direction, the second design length being 1 / 20 to 1 / 2 of the first design length.

[0012] The reinforcing grooves arranged along the second direction at the connection of the first electrode part and the second electrode part have a set number, the set number comprising 3 to 10.

[0013] The vertical projection of the groove profile of the reinforcing groove in the first direction is in the shape of a circular arc, a trapezoid, a wedge or a triangle.

[0014] The reinforcing groove comprises a first inclined surface part and a second inclined surface part arranged opposite to each other at the connection of the first electrode part and the second electrode part, and the first inclined surface part and the second inclined surface part are connected to each other or kept at a distance at one end towards the magnetic body.

[0015] According to a second aspect, the technical solution adopted is:

[0016] An electronic device comprising the high-reliability inductor according to any one of the above embodiments.

[0017] In summary, compared with the prior art, the present application discloses a high-reliability inductor and an electronic device. The inductor comprises a magnetic body, a functional electrode and a reinforcing groove. The functional electrode comprising an integrally connected first electrode part and a second electrode part is arranged at the lower end of the magnetic body with a spacing. The first electrode part extends from the lower end of the magnetic body to the side wall of the magnetic body along the first direction. The first electrode part and the second electrode part partially cover the side wall of the magnetic body and the lower end of the magnetic body along the second direction, respectively. A plurality of reinforcing grooves are arranged at the connection of the first electrode part and the second electrode part, and a predetermined spacing is kept between adjacent reinforcing grooves. Through the above arrangement, the connection stability of the inductor and the external environment is enhanced based on the structural design of the first electrode part and the second electrode part in combination with the reinforcing grooves, thereby improving the reliability of the inductor. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a three-dimensional structural diagram of the first high-reliability inductor of this application;

[0020] Figure 2 This is a three-dimensional structural diagram of the first high-reliability inductor of this application from another angle;

[0021] Figure 3 This is a bottom view of the structure of the first type of high-reliability inductor in this application;

[0022] Figure 4 This is a three-dimensional structural diagram of the second type of high-reliability inductor in this application;

[0023] Figure 5 This is a bottom view of the structure of the second type of high-reliability inductor in this application. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] It should be understood that the specific embodiments described herein are merely illustrative of the present application and should not be used to limit the present application.

[0027] In the following description, the suffixes used for elements such as "module", "part", or "unit" are used only to facilitate the description of the present application, and have no particular meaning by themselves. Thus, "module", "part", or "unit" can be used interchangeably.

[0028] 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 based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] 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 a limitation on the priority order of the embodiments.

[0030] Please refer to Figures 1 to 5 The high-reliability inductor of the present application includes a magnetic body 1, a functional electrode 2, and a reinforcing groove body 3.

[0031] In the specific implementation process, the functional electrode 2 is arranged at the lower end of the magnetic body 1 with a spacing, the functional electrode 2 includes a first electrode part 21 and a second electrode part 22 connected integrally, the first electrode part 21 extends from the lower end of the magnetic body 1 to the side wall of the magnetic body 1 along a first direction, and the first electrode part 21 and the second electrode part 22 partially cover the side wall of the magnetic body 1 and the lower end of the magnetic body 1, respectively, along a second direction perpendicular to the first direction, and a plurality of reinforcing groove bodies 3 are arranged at the connection between the first electrode part 21 and the second electrode part 22, and the adjacent reinforcing groove bodies 3 maintain a predetermined spacing.

[0032] Then, the inductor of the present embodiment, the first electrode part 21 extends from the lower end of the magnetic body 1 to the side wall of the magnetic body 1 along the first direction, and the first electrode part 21 and the second electrode part 22 partially cover the side wall of the magnetic body 1 and the lower end of the magnetic body 1, respectively, along the second direction, thereby increasing the contact area of the functional electrode 2 with the magnetic body 1, thereby improving the mechanical bonding strength of the inductor, making it more resistant to external forces such as vibration, drop, etc., and effectively dispersing the mechanical stress of the functional electrode 2 through the structural design along the first direction and the second direction, reducing the stress concentration phenomenon of the functional electrode 2, reducing the risk of cracking of the solder joint with the external environment (such as the PCB board), and improving the reliability of the inductor.

[0033] It should be noted that the embodiment is constructed with X-Y-Z spatial coordinates, so that Figure 1 or Figure 4 For example, the X-axis direction can be regarded as the first direction, the Y-axis direction can be regarded as the second direction, and the Z-axis direction can be regarded as the third direction. The first direction can also be regarded as the extension direction of the upper and lower ends of the magnetic body 1, that is, the direction perpendicular to the end face of the upper and lower ends of the magnetic body 1. The second direction can also be regarded as the extension direction of the left and right sides of the magnetic body 1. The third direction can also be regarded as the extension direction of the front and rear ends of the magnetic body 1. Of course, the embodiment is not limited to this. X-Y-Z can also be other arbitrary directions perpendicular to each other in space according to actual needs, and details are not repeated here.

[0034] In addition, a plurality of reinforcing grooves 3 are arranged at the connection between the first electrode part 21 and the second electrode part 22, and a predetermined interval is maintained between adjacent reinforcing grooves 3, that is, the reinforcing grooves 3 introduce specific structural optimization at the connection between the first electrode part 21 and the second electrode part 22. Specifically, the arrangement of the reinforcing grooves 3 can form a connection strengthening structure at the edge of the magnetic body 1 (the connection between the first electrode part 21 and the second electrode part 22), so that the inductor forms a mesh occlusion structure with the solder after being welded with the PCB, thereby greatly improving the reliability of the inductor in connecting with the external environment, improving the bonding strength and fatigue resistance of the solder joint between the functional electrode 2 and the PCB, ensuring the stable operation of the inductor in harsh environments (such as vibration, drop, impact), and prolonging the service life of the component.

[0035] On the other hand, a plurality of reinforcing grooves 3 are arranged at the connection between the first electrode part 21 and the second electrode part 22, wherein the functional electrode 2 can be symmetrically arranged at the lower end of the magnetic body 1, in combination with the arrangement design of the first electrode part 21 and the second electrode part 22 in the first direction and the second direction, so that the inductor has better resistance in XYZ three directions, especially in the XY plane direction (shear force direction).

[0036] In addition, the reinforcing grooves 3 are arranged at the edge of the magnetic body 1 (the connection between the first electrode part 21 and the second electrode part 22), so that the inductor forms a mesh occlusion structure with the solder after being welded with the PCB, thereby increasing the actual contact area between the functional electrode 2 and the PCB, thereby enhancing the fatigue resistance of the solder joint, avoiding the problem of loose or broken solder joint after long-term use, and at the same time, the design of the reinforcing grooves 3 can promote the uniform distribution of the solder during the welding process, thereby improving the welding quality and reliability.

[0037] It can be understood that a predetermined interval is maintained between adjacent reinforcing grooves 3 to avoid too dense or too sparse grooves, so as to ensure the balance between the connection strength and the process.

[0038] In one embodiment, the magnetic body 1 is designed in a rectangular body structure and is integrally pressed from a magnetic material, so that the rectangular body structure of the 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 integrally pressed magnetic material eliminates the structure splicing point, avoids the loosening, cracking or falling off of the magnetic body 1 due to uneven stress at the splicing point or long-term use, and makes the magnetic body 1 have higher anti-vibration and anti-impact capability. The integrally pressed magnetic material can realize uniform distribution of magnetic performance, reduce magnetic loss, optimize the magnetic flux distribution of the inductor, and improve the overall performance of the inductor.

[0039] It can be understood that the magnetic body 1 is configured with a winding coil (not shown), and the lead-out end of the winding coil is electrically connected with the functional electrode 2, thereby ensuring the performance of the inductor.

[0040] In one embodiment, the first electrode part 21 and the second electrode part 22 are designed in a plane on the side away from the magnetic body 1 and are electroplated with a metal functional layer, that is, the plane design provides a flat surface for contact with the PCB, increases the soldering area, and makes it easier to form uniform soldering points during soldering, thereby improving soldering efficiency and reducing process complexity. In addition, the electroplating of the metal functional layer can optimize the conductivity and soldering performance of the functional electrode 2 and provide certain protection.

[0041] Preferably, the metal functional layer includes at least one of a copper layer, a nickel layer or a tin layer.

[0042] It should be noted that the different metal functional layers (such as copper, nickel and tin) of the present embodiment can be electroplated alone or in combination to adapt to various application scenarios.

[0043] In addition, in order to ensure the stable connection effect of the functional electrode 2 with the external environment, a plurality of reinforcing groove bodies 3 are arranged uniformly along the second direction at the connection of the first electrode part 21 and the second electrode part 22.

[0044] In one embodiment, referring to Figure 3 , the connection of the first electrode part 21 and the second electrode part 22 has a first design length in the second direction, and each reinforcing groove body 3 has a second design length in the second direction. The first design length is set as La, and the second design length is set as Lb, so that the second design length is 1 / 20 to 1 / 2 of the first design length, that is, Lb is 1 / 20 to 1 / 2 of La.

[0045] Therefore, the reasonable proportion range (1 / 20 to 1 / 2) ensures that the reinforcing groove 3 provides sufficient support at the connection of the first electrode part 21 and the second electrode part 22, effectively disperses mechanical stress, and the optimization of the occlusal structure makes the inductor have higher stability when subjected to external mechanical impact (such as vibration, falling), effectively prevents the welding point from being damaged, and this proportion range not only ensures the stability of the functional electrode 2 structure, but also avoids the problem of increased processing difficulty or excessive weakening of materials caused by the reinforcing groove 3 being too large.

[0046] Preferably, the second design length is 1 / 10 of the first design length.

[0047] In one embodiment, the reinforcing groove 3 arranged at the connection of the first electrode part 21 and the second electrode part 22 in the second direction has a set number, and the set number includes 3 to 10.

[0048] Preferably, the reinforcing groove 3 arranged at the connection of the first electrode part 21 and the second electrode part 22 in the second direction has 5.

[0049] Optionally, the reinforcing groove 3 arranged at the connection of the first electrode part 21 and the second electrode part 22 in the second direction has a set number, and the set number includes 1 to 10.

[0050] In the specific implementation process, the vertical projection of the groove profile of the reinforcing groove 3 in the first direction is in the shape of a circular arc, a trapezoid, a wedge, a triangle, a trapezoidal wedge, or a triangular wedge.

[0051] Preferably, the reinforcing groove 3 includes a first inclined surface part 31 and a second inclined surface part 32 arranged opposite to each other at the connection of the first electrode part 21 and the second electrode part 22, wherein the first inclined surface part 31 and the second inclined surface part 32 are connected to each other or kept at a distance towards one end of the magnetic body 1.

[0052] Therefore, the first inclined surface part 31 and the second inclined surface part 32 can be in a planar design, and the vertical projection of the groove profile of the reinforcing groove 3 in the first direction can correspond to a triangle when the first inclined surface part 31 and the second inclined surface part 32 are connected to each other towards one end of the magnetic body 1, or the vertical projection of the groove profile of the reinforcing groove 3 in the first direction can correspond to a trapezoid when the first inclined surface part 31 and the second inclined surface part 32 are kept at a distance towards one end of the magnetic body 1, thereby making the reinforcing groove 3 have a set groove space.

[0053] And the first inclined surface part 31 and the second inclined surface part 32 can be in an arc design, and the vertical projection of the groove profile of the reinforcing groove 3 in the first direction can correspond to a circular arc when the first inclined surface part 31 and the second inclined surface part 32 are connected to each other towards one end of the magnetic body 1, thereby making the reinforcing groove 3 have a set groove space.

[0054] The vertical projection of the groove profile of the reinforced groove body 3 in the first direction is in the shape of a circular arc, a trapezoid, a wedge, or a triangle, and the reinforced groove body 3 comprises first and second inclined surface portions 31 and 32 arranged opposite each other at the connection between the first and second electrode portions 21 and 22, the first and second inclined surface portions 31 and 32 being connected to each other or kept at a distance from each other toward one end of the magnetic body 1, so that the reinforced groove body 3 has a set groove space, and the reinforced groove body 3 with the set geometry and inclined surface structure helps to buffer mechanical impact or vibration forces from multiple directions, especially in electronic devices used in high-strength or harsh environments, thereby improving the bonding strength and fatigue resistance of the functional electrode 2 and the PCB pad, ensuring stable operation of the inductor in harsh environments (such as vibration, drop, impact), increasing the actual contact area between the functional electrode 2 and the PCB after the inductor is welded to the PCB to form a mesh occlusion structure with the solder, thereby enhancing the fatigue resistance of the solder joint and avoiding problems such as loosening or breaking of the solder joint after long-term use.

[0055] The application also discloses an electronic device comprising the high-reliability inductor according to any one of the above embodiments, and other working principles and processes of the electronic device are described in the foregoing description of the high-reliability inductor.

[0056] The high-reliability inductor and the electronic device provided by the application are described in detail above, and 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 has its own focus, and the parts not described or recorded in detail in a certain embodiment can be seen in the related description of other embodiments.

[0057] The above is only a preferred embodiment of the application, and does not limit the patent scope of the application, and 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 above embodiments is not described in all possible combinations, and any equivalent structure or equivalent process transformation using the content of the specification and the drawings, or direct or indirect application in other related technical fields, as long as the combination of these technical features does not exist contradictory, all are included in the patent protection scope of the application.

Claims

1. A high reliability inductor, characterized by, The high-reliability inductor comprises a magnetic body, a functional electrode and reinforcing grooves, the functional electrode is arranged at the lower end of the magnetic body with a certain interval, the functional electrode comprises a first electrode part and a second electrode part which are connected as a whole, the first electrode part extends from the lower end of the magnetic body to the sidewall of the magnetic body along a first direction, the first direction is the extension direction of the upper and lower ends of the magnetic body, and the first electrode part and the second electrode part partially cover the sidewall of the magnetic body and the lower end of the magnetic body along a second direction perpendicular to the first direction, respectively, and a plurality of reinforcing grooves are arranged at the connection between the first electrode part and the second electrode part, and the adjacent reinforcing grooves have a preset interval.

2. The high reliability inductor of claim 1, wherein, The magnetic body is designed in a rectangular body structure and is integrally pressed and formed by a magnetic material.

3. The high reliability inductor of claim 1, wherein, The side of the first electrode part and the second electrode part away from the magnetic body is designed as a plane and is plated with a metal functional layer.

4. The high reliability inductor of claim 3, wherein, The metal functional layer comprises at least one of a copper layer, a nickel layer or a tin layer.

5. The high reliability inductor of claim 1, wherein, A plurality of reinforcing grooves are uniformly arranged at the connection between the first electrode part and the second electrode part along the second direction.

6. The high reliability inductor of claim 1, wherein, The connection between the first electrode part and the second electrode part has a first design length in the second direction, and each reinforcing groove has a second design length in the second direction, and the second design length is 1 / 20 to 1 / 2 of the first design length.

7. The high reliability inductor of claim 1, wherein, The reinforcing grooves arranged at the connection between the first electrode part and the second electrode part along the second direction have a certain number, and the certain number comprises 3 to 10.

8. The high reliability inductor of claim 1, wherein, The vertical projection of the groove profile of the reinforcing groove in the first direction is in a circular arc shape, a trapezoidal shape, a wedge shape or a triangular shape.

9. The high reliability inductor of claim 1, wherein, The reinforcing groove comprises a first inclined surface part and a second inclined surface part arranged opposite to each other at the connection between the first electrode part and the second electrode part, and one end of the first inclined surface part and the second inclined surface part towards the magnetic body is connected to each other or has a distance.

10. An electronic device, comprising: The high-reliability inductor comprises a magnetic body, a functional electrode and reinforcing grooves, the functional electrode is arranged at the lower end of the magnetic body with a certain interval, the functional electrode comprises a first electrode part and a second electrode part which are connected as a whole, the first electrode part extends from the lower end of the magnetic body to the sidewall of the magnetic body along a first direction, the first direction is the extension direction of the upper and lower ends of the magnetic body, and the first electrode part and the second electrode part partially cover the sidewall of the magnetic body and the lower end of the magnetic body along a second direction perpendicular to the first direction, respectively, and a plurality of reinforcing grooves are arranged at the connection between the first electrode part and the second electrode part, and the adjacent reinforcing grooves have a preset interval.

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