Flat coil high-current power inductor

Abstract

The utility model discloses a flat coil high-current power inductor, which relates to the technical field of electronic components and comprises an alloy powder core, a polyamide flat wire, an insulating film and a bottom plate. The polyamide flat wire is wound on the alloy powder core; the insulating film is wound on the surface of the alloy powder core and is positioned between the alloy powder core and the polyamide flat wire; the alloy powder core and the polyamide flat wire are fixedly mounted on the bottom plate, and a pin is arranged at the lower end of the bottom plate and electrically connected with the polyamide flat wire; resistance and magnetic loss can be effectively reduced, heating can be reduced, performance stability of the inductor under large current can be improved, energy loss when large current passes can be reduced, energy transmission efficiency can be improved, and requirements of various large current application scenes can be met. Meanwhile, a magnetic field generated by an inductor can be effectively prevented from leaking outwards, and electromagnetic interference to surrounding electronic elements is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic component technical field especially, relate to a flat coil large current power inductance. BACKGROUND

[0002] Power inductance is an indispensable basic element in electronic circuit. It is mainly composed of coil and magnetic core, and works through electromagnetic induction principle. In the circuit, it can play the roles of energy storage, filtering, current limiting, etc. It stabilizes current, reduces fluctuation and ensures stable operation of electronic equipment. In fields such as mobile phone charger, computer motherboard, new energy vehicle, industrial power supply and server, power inductance is present, helping to realize efficient power conversion and transmission.

[0003] In the development process of electronic equipment, the performance requirements of power inductance are continuously improved. The traditional power inductance has many shortcomings when dealing with large current. For example, the ordinary inductor coil structure will generate a large resistance when a large current passes through, resulting in heating phenomenon, increasing power loss, affecting the overall efficiency of the equipment, and unable to meet the demand of high power application.

[0004] Therefore, it is necessary to propose a new technical scheme to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a technical scheme that can solve the above problems.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a flat coil large current power inductance, comprising an alloy powder core, a polyamide flat wire, an insulating film and a bottom plate.

[0007] The polyamide flat wire is wound on the alloy powder core.

[0008] The insulating film is wound on the surface of the alloy powder core and is between the alloy powder core and the polyamide flat wire.

[0009] The alloy powder core and the polyamide flat wire are fixedly installed on the bottom plate, and the bottom plate is provided with a pin at the lower end, and the pin is electrically connected with the polyamide flat wire.

[0010] As a further scheme of the utility model, the alloy powder core comprises a left powder core and a right powder core, the left powder core and the right powder core are fixedly connected, and the polyamide flat wire is wound on the left powder core and the right powder core.

[0011] As a further scheme of the utility model, it further comprises a magnetic shielding ring, and the magnetic shielding ring is provided with two, which are respectively around the left powder core and the right powder core.

[0012] As a further scheme of the present utility model: still include five gold steel band, the five gold steel band is bound to left powder core and right powder core, be used for fixed left powder core and right powder core.

[0013] As a further scheme of the present utility model: the insulating film is between five gold steel band and left powder core, right powder core.

[0014] As a further scheme of the present utility model: the insulating film is polyimide high temperature adhesive tape.

[0015] As a further scheme of the present utility model: the alloy powder core is iron silicon alloy powder core.

[0016] As a further scheme of the present utility model: the alloy powder core and bottom plate, polyamide flat wire and alloy powder core and magnetic shielding ring and alloy powder core between are all through epoxy resin glue water bonding fixed.

[0017] Compared with the prior art, the beneficial effects of the technical scheme are that: the alloy powder core has the characteristics of high saturation magnetic flux density and low loss, can reduce energy loss, improve the efficiency of inductance, the polyamide flat wire design can effectively reduce the direct current resistance of inductor, improve the energy transmission efficiency, and can withstand larger current, meet the demand of high power application, and the insulating film is wound around the alloy powder core to strengthen the insulation voltage strength between the alloy powder core and the polyamide flat wire, ensure its electrical reliability.

[0018] When the inductance works, the magnetic shielding ring can effectively shield the magnetic field generated by the inductance from leaking outward, reduce the electromagnetic interference to the surrounding electronic elements, and also prevent the external magnetic field from interfering with the internal magnetic field of the inductance, improve the electromagnetic compatibility of the inductance.

[0019] In summary, the present utility model can effectively reduce the resistance and magnetic loss, not only can reduce the heat, improve the performance stability of inductance under large current, but also can reduce the energy loss when large current passes through, improve the energy transmission efficiency, can meet the demand of various large current application scenes. At the same time, it can effectively shield the magnetic field generated by the inductance from leaking outward, reduce the electromagnetic interference to the surrounding electronic elements.

[0020] The additional aspects and advantages of the present utility model will be partially given in the following description, some will become obvious from the following description, or be known by the practice of the present utility model. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0022] Fig. 1 is the overall structure schematic diagram of the present application;

[0023] Fig. 2 is the overall cross-sectional structure schematic diagram of the present application;

[0024] The corresponding label explanations in the drawings are as follows:

[0025] 1, alloy powder core; 11, left powder core; 12, right powder core; 2, polyamide flat wire; 3, insulation film; 4, bottom plate; 5, pin; 6, magnetic shielding ring; 7, hardware steel belt. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Please refer to Figs. 1-2 , a flat coil large current power inductor, comprising an alloy powder core 1, a polyamide flat wire 2, an insulation film 3 and a bottom plate 4.

[0028] The polyamide flat wire 2 is wound on the alloy powder core 1.

[0029] The insulation film 3 is wound on the surface of the alloy powder core 1 and is between the alloy powder core 1 and the polyamide flat wire 2.

[0030] The alloy powder core 1 and the polyamide flat wire 2 are fixedly installed on the bottom plate 4, and the bottom plate 4 is provided with a pin 5 at the lower end, and the pin 5 is electrically connected with the polyamide flat wire 2.

[0031] Specifically, in the embodiment, the alloy powder core 1 made of iron-silicon alloy powder core has the characteristics of high saturation magnetic flux density and low loss, can maintain good magnetic properties under large current, reduce energy loss, improve the efficiency of inductance, the design of the polyamide flat wire 2 can effectively reduce the direct current resistance of the inductor, reduce the energy loss when the large current passes through, improve the energy transmission efficiency, and thus can withstand larger current, meet the demand of high power application, and the insulating film 3 is wound around the alloy powder core 1 to strengthen the insulation voltage strength between the alloy powder core 1 and the polyamide flat wire 2, and ensure the electrical reliability;

[0032] And the bottom plate 4 provides mounting support for the alloy powder core 1 and the polyamide flat wire 2, so that the inductor forms a whole structure, which is convenient for installation and fixation on the circuit board, and the electrical connection of the pin 5 to the external circuit realizes the current transmission between the inductor and other electronic components;

[0033] In summary, the utility model can effectively reduce the resistance and magnetic loss, not only can reduce the heat, improve the performance stability of inductance under large current, but also can reduce the energy loss when the large current passes through, improve the energy transmission efficiency, can meet the demand of various large current application scene.

[0034] In the embodiment, further propose that the alloy powder core 1 includes left powder core 11 and right powder core 12, left powder core 11 and right powder core 12 are fixedly connected, and polyamide flat wire 2 is wound on left powder core 11 and right powder core 12.

[0035] Specifically, the alloy powder core 1 is divided into left powder core 11 and right powder core 12, which is convenient for manufacturing and assembling, and polyamide flat wire 2 is wound on left powder core 11 and right powder core 12, so that the magnetic circuit of the inductor is more reasonable, and the inductor can better adapt to the large current working environment and improve the performance and stability of the inductor.

[0036] In the embodiment, further propose that the alloy powder core 1 includes left powder core 11 and right powder core 12, left powder core 11 and right powder core 12 are fixedly connected, and polyamide flat wire 2 is wound on left powder core 11 and right powder core 12.

[0037] Specifically, when the inductor works, the magnetic shielding ring 6 can effectively shield the magnetic field generated by the inductor from leaking outward, reduce the electromagnetic interference to the surrounding electronic components, and also prevent the external magnetic field from interfering with the internal magnetic field of the inductor, improve the electromagnetic compatibility of the inductor; and the two magnetic shielding rings 6 form a closed magnetic shielding space, further improve the stability and reliability of the inductor in complex electromagnetic environment.

[0038] In the embodiment, further propose that the alloy powder core 1 includes left powder core 11 and right powder core 12, left powder core 11 and right powder core 12 are fixedly connected, and polyamide flat wire 2 is wound on left powder core 11 and right powder core 12.

[0039] Specifically, the hardware steel band 7 can provide mechanical fastening force for the left powder core 11 and the right powder core 12, so as to ensure that the left powder core 11 and the right powder core 12 are tightly butted, and prevent the powder cores from loosening due to vibration, impact and other factors during use, thereby affecting the performance of the inductor.

[0040] Preferably, the insulating film 3 is located between the hardware steel band 7 and the left powder core 11 and the right powder core 12.

[0041] Specifically, the hardware steel band 7 can not only fasten the left powder core 11 and the right powder core 12, but also generate fastening force on the insulating film 3, so as to avoid loosening of the insulating film 3.

[0042] Preferably, the insulating film 3 is a polyimide high-temperature adhesive tape, which has excellent high-temperature resistance and insulation performance, and can maintain stable insulation performance for a long time in a high-temperature environment, thereby ensuring the safety and reliability of the inductor under harsh working conditions.

[0043] Preferably, the alloy powder core 1, the polyamide flat wire 2 and the magnetic shielding ring 6 are fixed by epoxy resin glue.

[0044] Specifically, the epoxy resin glue has good adhesion and insulation performance, and can firmly connect the components together while ensuring electrical insulation and preventing the occurrence of electric leakage.

[0045] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A flat coil high current power inductor, characterized by, Including alloy powder core (1), polyamide flat wire (2), insulating film (3) and bottom plate (4); The polyamide flat wire (2) is wound on the alloy powder core (1); The insulating film (3) is wound on the surface of the alloy powder core (1) and between the alloy powder core (1) and the polyamide flat wire (2); The alloy powder core (1) and the polyamide flat wire (2) are fixedly installed on the bottom plate (4), and the bottom plate (4) is provided with a pin (5) at the lower end, and the pin (5) is electrically connected with the polyamide flat wire (2).

2. Flat coil high current power inductor according to claim 1, characterized in that The alloy powder core (1) includes a left powder core (11) and a right powder core (12), the left powder core (11) and the right powder core (12) are fixedly connected, and the left powder core (11) and the right powder core (12) are both wound with the polyamide flat wire (2).

3. Flat coil high current power inductor according to claim 2, characterized in that It also includes a magnetic shielding ring (6), the magnetic shielding ring (6) is provided with two, respectively surrounding the left powder core (11) both ends and the right powder core (12) both ends abutment.

4. The pancake coil high current power inductor of claim 2, wherein, It also includes a hardware steel band (7), the hardware steel band (7) is bound and rolled on the left powder core (11) and the right powder core (12), for fixing the left powder core (11) and the right powder core (12).

5. Flat coil high current power inductor according to claim 4, characterized in that The insulating film (3) is between the hardware steel band (7) and the left powder core (11) and the right powder core (12).

6. The pancake coil high current power inductor of claim 1, wherein, The insulating film (3) is a polyimide high temperature adhesive tape.

7. The pancake coil high current power inductor of claim 1, wherein, The alloy powder core (1) is an iron-silicon alloy powder core.

8. Flat coil high current power inductor according to any of claims 3-7, characterized in that, The alloy powder core (1), the bottom plate (4), the polyamide flat wire (2) and the alloy powder core (1), and the magnetic shielding ring (6) and the alloy powder core (1) are all fixedly connected by epoxy resin glue.

Images