CN213519533U

CN213519533U - Inductor with coils connected in series inside and outside

Info

Publication number: CN213519533U
Application number: CN202022466391.XU
Authority: CN
Inventors: 肖俊承; 王一龙; 赵楠楠
Original assignee: Eaglerise Electric and Electronic China Co Ltd; Foshan Shunde Eaglerise Electric Power Technology Co Ltd; Jian Eaglerise Electric Co Ltd
Current assignee: Eaglerise Electric and Electronic China Co Ltd; Foshan Shunde Eaglerise Electric Power Technology Co Ltd; Jian Eaglerise Electric Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-06-22
Anticipated expiration: 2030-10-30

Abstract

The utility model discloses an inductor with an internal coil and an external coil connected in series, which comprises a coil, wherein the coil is provided with an internal coil and an external coil; the inner coil is located in the outer coil, the inner coil and the outer coil are formed by winding a flat wire, and the inner coil and the outer coil are of a vertical winding structure. Set the coil to the structure that contains interior outer lane, when having increased the coil turn, do not increase the width-to-thickness ratio of coil, greatly reduced the volume of coil, the magnetic core size can need not the adjustment or only need increase horizontal wire winding space, has improved the window utilization ratio and the power density of magnetic core. The inner and outer coils are formed by winding the same flat wire, so that the inner and outer coils are prevented from being connected in a welding mode, and copper loss can be reduced relative to welding.

Description

Inductor with coils connected in series inside and outside

Technical Field

The utility model relates to an inductance technical field especially relates to an inductance of inside and outside series connection coil.

Background

Along with the mature application of high-power inductors to solar photovoltaic inverters, charging piles, UPS and energy storage devices, the application of inductors of vertical winding structures to the products is more and more frequent.

The high-power inductor has high power requirement, which requires that the coil has enough inductance, and the number of turns of the coil needs to be increased to meet the requirement of inductance increase. When the number of turns of the coil is increased, the width-thickness ratio (the ratio of the stacking height of the windings of the coil to the thickness) of the coil is large, and the size of the magnetic core needs to be adjusted to match the size of the coil, so that the power density of the inductor is influenced, and especially when an E-shaped magnetic core is adopted, the influence on the power density is particularly obvious.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an inductance of inside and outside series connection coil has the characteristics that space utilization is high.

To achieve the purpose, the utility model adopts the following technical proposal:

an inductor with internal and external series coils comprises a coil, wherein the coil is provided with an inner coil and an outer coil;

the inner coil is located in the outer coil, the inner coil and the outer coil are formed by winding a flat wire, and the inner coil and the outer coil are of a vertical winding structure.

Furthermore, two ends of the flat wire are positioned on the same side surface of the coil and are arranged adjacently.

Further, the flat wires of the inner coil and the outer coil have the same number of turns or have a difference of 1-2 turns.

Furthermore, the distance between the outer wall of the inner coil and the inner wall of the outer coil is 0.1-3 mm.

Further, the inductance further comprises an E-shaped magnetic core, and the coil is arranged on a center pillar of the E-shaped magnetic core.

Furthermore, the center pillar of the E-shaped magnetic core is provided with two coils which are separated by a spacer;

the winding directions of the flat wires of the two coils are the same.

Furthermore, two E type magnetic cores that set up relatively are a set of, and the multiunit E type magnetic core sets up side by side.

The utility model has the advantages that:

1. set the coil to the structure that contains interior outer lane, when having increased the coil turn, do not increase the width-to-thickness ratio of coil, greatly reduced the volume of coil, the magnetic core size can need not the adjustment or only need increase horizontal wire winding space, has improved the window utilization ratio and the power density of magnetic core.

2. The inner and outer coils are formed by winding the same flat wire, so that the inner and outer coils are prevented from being connected in a welding mode, and copper loss can be reduced relative to welding.

Drawings

Fig. 1 is a schematic structural diagram of an inductor with inner and outer series coils according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the structure of the coil of the inductor shown in FIG. 1;

FIG. 3 is a schematic diagram of another view of the coil of the inductor shown in FIG. 1;

FIG. 4 is a schematic diagram of the inductor shown in FIG. 1 with a portion of the magnetic core removed;

the coil comprises a coil 1, an inner coil 11, an outer coil 12, a terminal 01, an E-shaped magnetic core 2, a center pillar 21 and a spacer 3.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

An inductor with internal and external series coils according to an embodiment of the present invention is described below with reference to fig. 1 to 4.

An inductor with internal and external series coils comprises a coil 1, wherein the coil 1 is provided with an inner coil 11 and an outer coil 12; the inner coil 11 is positioned in the outer coil 12, the inner coil 11 and the outer coil 12 are formed by winding a flat wire, and the inner coil 11 and the outer coil 12 are both in a vertical winding structure.

The flat wire is a copper wire, and the flat wire vertically-wound coil has the characteristics of simple structure, good stability and convenience in installation. Set coil 1 to the structure that contains interior outer lane, when having increased the coil turn, do not increase the width-to-thickness ratio of coil, greatly reduced the volume of coil, the magnetic core size can need not the adjustment or only need increase horizontal wire winding space, has improved the window utilization ratio and the power density of magnetic core.

Meanwhile, the inner coil and the outer coil are formed by winding the same flat wire, so that the inner coil and the outer coil are prevented from being connected in a welding mode, and copper loss can be reduced compared with welding.

When the coil with the inner and outer rings is applied to a differential mode inductor, the volume of the whole inductor is greatly reduced.

Furthermore, two ends 01 of the flat wire are located on the same side face of the coil 1 and are arranged adjacently, namely two wiring terminals of the coil are arranged at the same position, and the flat wire is convenient to install. Meanwhile, two ends 01 of the flat wire are arranged on the same plane, so that the inner coil 11 and the outer coil 12 can be wound conveniently.

Further, the inner coil 11 and the outer coil 12 have the same number of flat turns or differ by 1-2 turns. The inner coil 11 and the outer coil 12 are set to have the same or close turns, so that the volume of the coil can be reduced to the maximum extent, and a stable coil winding effect can be achieved.

Furthermore, the distance between the outer wall of the inner coil 11 and the inner wall of the outer coil 12 is 0.1-3 mm. The interval of so setting up interior outer coil has better radiating effect under the condition of guaranteeing that both are contactless.

Further, the inductor further comprises an E-shaped magnetic core 2, and the coil 1 is arranged on the center pillar 21 of the E-shaped magnetic core 2. The coil with the inner and outer rings is matched with the E-shaped magnetic core 2, so that the winding space of the magnetic core can be fully utilized, and the inductor has higher power density.

Further, the center pillar 21 of the E-shaped magnetic core 2 is provided with two coils 1, and the two coils 1 are separated by a spacer 3; the flat wires of the two coils 1 are wound in the same direction. The E-shaped magnetic core 2 and the two coils with the same winding direction form a double-winding differential inductor, the inductor has high power density and small volume, and the requirement of higher and higher power density can be met. The spacer 3 is a GPO-3 insulating spacer.

Further, two E type magnetic cores 2 that set up relatively are a set of, and multiunit E type magnetic core 2 sets up side by side, and multiunit E type magnetic core 2's center pillar all is located two coils. Through setting up multiunit E type magnetic core 2 and setting up the coil 1 of great length, effectively improved the power density of inductance, be applicable to high-power transformer.

Other configurations and operations of an inductance of an inner and outer series coil according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The inductor with the inner coil and the outer coil connected in series is characterized by comprising a coil, wherein the coil is provided with an inner coil and an outer coil;

2. The inductor as claimed in claim 1, wherein the two ends of the flat wire are located on the same side of the coil and are disposed adjacent to each other.

3. The inductor with inner and outer series coils as claimed in claim 1, wherein the inner and outer coils have the same number of flat wires or have a difference of 1-2.

4. The inductor with inner and outer series coils as claimed in claim 1, wherein the distance between the outer wall of the inner coil and the inner wall of the outer coil is 0.1-3 mm.

5. An inductor with inner and outer series coils according to any one of claims 1-4, further comprising an E-shaped magnetic core, wherein the coil is arranged on a center pillar of the E-shaped magnetic core.

6. The inductor with inner and outer series coils as claimed in claim 5, wherein the center leg of the E-shaped magnetic core is provided with two coils, and the two coils are separated by a spacer;

the winding directions of the flat wires of the two coils are the same.

7. The inductor with inner and outer series coils as claimed in claim 6, wherein two sets of said E-shaped magnetic cores are disposed oppositely, and a plurality of sets of said E-shaped magnetic cores are disposed side by side.