CN220020832U

CN220020832U - Electrode structure inductor

Info

Publication number: CN220020832U
Application number: CN202321392106.1U
Authority: CN
Inventors: 彭鹏; 周娇; 郭应生
Original assignee: Zhejiang Cida Electronic Technology Co ltd
Current assignee: Zhejiang Cida Electronic Technology Co ltd
Priority date: 2023-06-02
Filing date: 2023-06-02
Publication date: 2023-11-14
Anticipated expiration: 2033-06-02

Abstract

The utility model discloses an electrode structure inductor, comprising: the magnetic core comprises a magnetic plate and a magnetic column arranged on the magnetic plate; a winding including a main body portion, and a first pin and a second pin led out from the main body portion; the magnetic core and the outer side of the winding are respectively provided with a magnetic powder layer, the outer sides of the magnetic powder layers are respectively exposed by the first pins and the second pins, the surfaces of the magnetic powder layers are respectively provided with a protective layer, and the surfaces of the first pins and the second pins exposed by the magnetic powder layer are respectively provided with three metal layers in sequence. The electrode structure inductor has simple structure and convenient use, improves the flatness of the electrode by arranging three metal layers on the pins in sequence, saves the conductive and adhesive layer coating process, and has lower cost.

Description

Electrode structure inductor

Technical Field

The utility model relates to the technical field of inductors, in particular to an electrode structure inductor.

Background

Along with the rapid alternation of the Chinese communication technology and the large-scale construction of related industries such as the Internet of things, smart cities and the like, the market scale of the Chinese inductor rapidly develops. In order to meet the application requirements, the development trend of the inductor is characterized by miniaturization, high frequency, high power and the like, and higher requirements are put forward on the reliability and integration design of the chip inductor, and the chip inductor mainly comprises a coil, a magnetic core and an electrode. The electrode mainly plays a role of conducting the inductance coil and the electronic component in the inductance, so that the weldability, the welding resistance and the high reliability of the electrode are considered in the design of the patch inductance, and the design of the electrode is a key factor affecting the weldability, the welding resistance, the reliability and the integrated design of the inductance;

the electrode structure in the prior art comprises a first metal layer, a conductive and adhesive layer and a second metal layer. The conductive and adhesive layer is in physical contact with the first metal layer, and the contact resistance is large. The second part of the first metal layer (which is not covered by the conductive and adhesive layer) is in chemical contact with the second metal layer to reduce the resistance, the area of the second part of the first metal layer needs to be strictly controlled in the production process, the problem of overlarge direct current resistance change after passing through a furnace is easily caused by the overlarge area, and the flatness of the electrode is influenced by the overlarge area.

Based on the above situation, the utility model provides an electrode structure inductor, which can effectively solve the above problems.

Disclosure of Invention

The utility model aims to provide an electrode structure inductor. The electrode structure inductor has simple structure and convenient use, improves the flatness of the electrode by arranging three metal layers on the pins in sequence, saves the conductive and adhesive layer coating process, and has lower cost.

The utility model is realized by the following technical scheme:

an electrode structure inductor, comprising:

the magnetic core comprises a magnetic plate and a magnetic column arranged on the magnetic plate;

a winding including a main body portion, and a first pin and a second pin led out from the main body portion;

the magnetic core and the outer side of the winding are respectively provided with a magnetic powder layer, the outer sides of the magnetic powder layers are respectively exposed by the first pins and the second pins, the surfaces of the magnetic powder layers are respectively provided with a protective layer, and the surfaces of the first pins and the second pins exposed by the magnetic powder layer are respectively provided with three metal layers in sequence.

Preferably, the magnetic plate has a T-shaped structure.

Preferably, the surfaces of the first pin and the second pin, which are exposed out of the magnetic powder layer, are respectively plated with three metal layers in sequence.

Compared with the prior art, the utility model has the following advantages:

1. the manufacturing process is simpler, the conductive and adhesive layer coating process is saved, and the cost is lower;

2. the electrode metal layer and the coil pins are in chemical contact (connected by metal bonds), so that the electrode metal layer has lower contact resistance, the contact resistance is reduced by about 2mΩ compared with that of the traditional technology, and meanwhile, the problem of overlarge direct current resistance change caused by physical contact is avoided;

3. the metal layers are sequentially covered, and the electrode flatness is better.

Drawings

FIG. 1 is a schematic diagram of a magnetic core and windings according to the present utility model;

FIG. 2 is a schematic view of a magnetic core and windings of the present utility model from another perspective;

FIG. 3 is a schematic view of a magnetic core according to the present utility model;

FIG. 4 is a schematic view of the structure of the winding according to the present utility model;

FIG. 5 is a schematic diagram of the structure of the magnetic core, windings and magnetic powder layer after baking and curing according to the present utility model;

fig. 6 is a schematic structural view of the present utility model.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present utility model, preferred embodiments of the present utility model will be described below with reference to specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.

Example 1:

as shown in fig. 1 to 6, the present utility model provides an electrode structure inductor, comprising:

a magnetic core 1 including a magnetic plate 11 and a magnetic pillar 12 provided on the magnetic plate 11;

a winding 2 including a main body 21, a first pin 22 and a second pin 23 led out from the main body 21;

the main body part 21 of the winding 2 is sleeved on the magnetic column 12, the first pin 22 and the second pin 23 of the winding 2 are bent and arranged at the bottom of the magnetic plate 11, the magnetic core 1 and the outer side of the winding 2 are respectively provided with a magnetic powder layer 3, the first pin 22 and the second pin 23 are respectively provided with a part of the outer side of the magnetic powder layer 3, the surface of the magnetic powder layer 3 is provided with a protective layer 5, and the surfaces of the first pin 22 and the second pin 23 which are respectively provided with a part of the magnetic powder layer 3 are respectively provided with three layers of metal layers 4 in sequence.

Example 2:

the main body part 21 of the winding 2 is sleeved on the magnetic column 12, the first pin 22 and the second pin 23 of the winding 2 are bent and arranged at the bottom of the magnetic plate 11, the magnetic core 1 and the outer side of the winding 2 are respectively provided with a magnetic powder layer 3, the first pin 22 and the second pin 23 are respectively provided with a part of the outer side of the magnetic powder layer 3, the surface of the magnetic powder layer 3 is provided with a protective layer 5, and the surfaces of the first pin 22 and the second pin 23 which are respectively provided with a part of the magnetic powder layer 3 are respectively provided with three layers of metal layers 4 in sequence. And baking and curing to form a protective layer 5, removing the material covered on the pins of the winding 2, and sequentially coating three metal layers on the pins to form electrodes for connection with an external circuit.

The magnetic plate 11 has a T-shaped structure.

Further, in another embodiment, the surfaces of the first pin 22 and the second pin 23, which expose the magnetic powder layer 3, are respectively plated with three metal layers 4 in sequence.

The metal layer 4 is formed by physical vapor deposition, dipping, or the like.

The electrode structure inductor of the present utility model can be easily manufactured or used by those skilled in the art from the description of the present utility model and the accompanying drawings, and can produce the positive effects described in the present utility model.

Unless specifically stated otherwise, in the present utility model, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the positional relationship indicated is based on the positional relationship indicated in the drawings, and is merely for convenience of describing the present utility model and simplifying the description, and it is not necessary to indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationship in the present utility model are merely for exemplary illustration and should not be construed as limitations of the present patent, and it is possible for those skilled in the art to understand the specific meaning of the above terms in conjunction with the drawings and according to the specific circumstances.

Unless specifically stated or limited otherwise, the terms "disposed," "connected," and "connected" herein are to be construed broadly, e.g., they may be fixed, removable, or integral; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present utility model fall within the scope of the present utility model.

Claims

1. An electrode structure inductor, comprising:

2. The electrode structure inductance of claim 1, wherein: the magnetic plate is in a T-shaped structure.

3. The electrode structure inductance of claim 1, wherein: and three metal layers are sequentially electroplated on the surfaces of the first pin and the second pin, which are exposed out of the magnetic powder layer.