CN212542148U

CN212542148U - Inductor, inductor packaging device and inverter

Info

Publication number: CN212542148U
Application number: CN202021007322.6U
Authority: CN
Inventors: 甘文彬; 区聪明; 徐智慧
Original assignee: Sunwoda Electronic Co Ltd
Current assignee: Sunwoda Electronic Co Ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-02-12
Anticipated expiration: 2030-06-04

Abstract

The utility model discloses an inductance, inductance packaging hardware and dc-to-ac converter, the inductance includes: a magnetic core; a coil, the coil comprising: the connecting wire is wound on the magnetic core; one end of the first coil is connected with one end of the connecting wire; one end of the second coil is connected with the other end of the connecting wire; the first coil and the second coil are respectively wound on two sides of the magnetic core, the first coil is wound on the magnetic core along a first direction, and the second coil is wound on the magnetic core along a second direction. The utility model discloses a fall into first coil and second coil two parts with the coil, first coil and second coil have reduced the voltage of coil between the winding to the both sides wiring of magnetic core respectively, make inductance equivalent capacitance's capacitance value reduce to reduce parasitic capacitance and produce, with the electromagnetic compatibility performance that improves the converter.

Description

Inductor, inductor packaging device and inverter

Technical Field

The utility model belongs to the technical field of the inductance technique and specifically relates to an inductance, inductance packaging hardware and dc-to-ac converter are related to.

Background

At present, a large voltage difference is formed between an input end and an output end of a converter by a direct current bus with a wide voltage range and a high voltage output, so that a large amount of complex parasitic capacitance and leakage inductance phenomena exist between inductance coils of the converter. When the converter works, high voltage always exists at two ends of the inductor to charge the parasitic capacitor at high frequency, so that the inductor current generates high-frequency oscillation with rich frequency spectrum at the moment of opening and closing the switch tube, and an EMI (Electromagnetic Interference) Interference source is formed to influence the stable work of the circuit.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an inductance can reduce the voltage difference between the inductance winding, reduces parasitic capacitance's production to improve the electromagnetic compatibility performance of converter.

The utility model discloses still provide an inductance packaging hardware.

The utility model discloses still provide an inverter.

In a first aspect, an embodiment of the present invention provides an inductor, including: a magnetic core; a coil, comprising: the magnetic core comprises a magnetic core, a connecting wire, a first coil and a second coil, wherein the connecting wire is wound on the magnetic core, one end of the first coil is connected with one end of the connecting wire, and one end of the second coil is connected with the other end of the connecting wire; the first coil and the second coil are respectively wound on two sides of the magnetic core, the first coil is wound on the magnetic core along a first direction, and the second coil is wound on the magnetic core along a second direction.

The utility model discloses inductance has following beneficial effect at least: the coil is divided into the first coil and the second coil, and the first coil and the second coil are respectively wound on two sides of the magnetic core, so that the voltage of the coil between windings is reduced, the capacitance value of the equivalent capacitance of the inductor is reduced, the generation of parasitic capacitance is reduced, and the electromagnetic compatibility of the converter is improved.

According to another embodiment of the inductor of the present invention, the first coil is wound to the first winding point along the first direction; the second coil is wound to the second winding point along the second direction; the second direction is opposite to the first direction; the first coil is wound on the magnetic core in a reciprocating mode between one end of the connecting wire and the first winding point; the second coil is reciprocally wound on the magnetic core between the other end of the connecting wire and the second winding point.

According to the utility model discloses an inductance of other embodiments still includes: a first terminal connected to the other end of the first coil; a second terminal connected to the other end of the second coil.

According to the utility model discloses an inductance of other embodiments still includes: one end of the first electronic wire is connected with the other end of the first coil, and the other end of the first electronic wire is connected with the first terminal; and one end of the second electronic wire is connected with the other end of the second coil, and the other end of the second electronic wire is connected with the second terminal.

According to the utility model discloses an inductance of other embodiments still includes: a first insulator disposed at a connection of the first electrical wire and the first coil; a second insulator disposed at a connection of the second electrical wire and the second coil.

In a second aspect, an embodiment of the present invention provides an inductor encapsulating device, including a plurality of inductors according to any of the embodiments of the first aspect; the shell is provided with an accommodating cavity, and the converter inductor is placed in the accommodating cavity.

According to other embodiments of the inductor encapsulating device of the present invention, the converter inductor is fixed in the accommodating cavity; and the accommodating cavity is filled with heat conduction pouring sealant.

According to other embodiments of the present invention, the inductor encapsulating device further comprises a housing.

In a third aspect, an embodiment of the present invention provides an inverter, including: a body; a plurality of inductor packaging devices according to any one of the embodiments of the second aspect, wherein the inductor packaging devices are fixed on the surface of the machine body;

according to other embodiments of the present invention, an inverter further comprises: and the sealing ring is arranged on the outer edge of the shell.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of an inductor according to the present invention;

fig. 2 is a schematic structural diagram of another embodiment of an inductor according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an embodiment of an inductor packaging apparatus according to the present invention;

fig. 4 is a schematic structural diagram of an embodiment of the inverter according to the present invention;

reference numerals:

the magnetic core 100, the connecting wire 210, the first coil 220, the second coil 230, the first electronic wire 310, the second electronic wire 320, the first insulating heat shrink sleeve 410, the second insulating heat shrink sleeve 420, the first terminal 510, the second terminal 520, the shell 600, the mounting wing 610 and the body 700.

Detailed Description

The conception and the resulting technical effects of the present invention will be described clearly and completely with reference to the following embodiments, so that the objects, features and effects of the present invention can be fully understood. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.

In the description of the present invention, if an orientation description is referred to, for example, the directions or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, only for convenience of description and simplification of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. If a feature is referred to as being "disposed," "secured," "connected," or "mounted" to another feature, it can be directly disposed, secured, or connected to the other feature or indirectly disposed, secured, connected, or mounted to the other feature.

In the description of the embodiments of the present invention, if "a plurality" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "more than", "less than" or "within" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.

Referring to fig. 1, in a first aspect, an embodiment of the present invention provides an inductor.

In some embodiments, the inductor includes a magnetic core 100 and a coil, the coil including a connecting wire 210, a first coil 220, and a second coil 230. The connection line 210 is wound on the magnetic core 100, one end of the first coil 220 is connected to one end of the connection line 210, and one end of the second coil 230 is connected to the other end of the connection line 210, it can be understood that the first coil 220 and the second coil 230 may be two coil portions on the same coil, or two different coils are connected through the connection line 210. In this embodiment, taking the same coil as an example, one coil is divided into three parts, namely, a connection line 210, a first coil 220 and a second coil 230. Referring to fig. 2, a diagram of an embodiment of a coil winding is shown. The first coil 220 and the second coil 230 are respectively wound to two sides of the magnetic core 100, that is, the first coil 220 is wound to a direction away from the second coil 230, and the second coil 230 is wound to a direction away from the first coil 220, for example: the first coil 220 is wound from above the core 100, and the second coil 230 is wound from below the core 100. The first coil 220 is wound around the core 100 in a first direction, and the second coil 230 is wound around the core 100 in a second direction. In a specific embodiment, the first direction is counterclockwise and the second direction is clockwise, i.e. the first coil 220 and the second coil 230 are wound on the magnetic core 100 from two sides of the magnetic core 100 along different directions.

It can be understood that the inductance in this embodiment can be applied to a converter, and by dividing one coil into the first coil 220 and the second coil 230 for winding, the voltage of the coil between the windings is reduced, so that the capacitance value of the equivalent capacitance of the inductance is reduced, and the generation of the parasitic capacitance is reduced, so as to improve the EMC (electromagnetic Compatibility) performance of the converter.

In some embodiments, the first coil 220 is wound to the first winding point along a first direction, the second coil 230 is wound to the second winding point along a second direction, the first coil 220 is reciprocally wound between one end of the connection line 210 and the first winding point, and the second coil 230 is reciprocally wound between the other end of the connection line 210 and the second winding point, the second direction being opposite to the first direction. That is, the first coil 220 is reciprocally wound between one end of the connection line 210 and the first winding point in the first direction or the second direction, and the second coil 230 is reciprocally wound between the other end of the connection line 210 and the second winding point in the second direction or the first direction. Specifically, the first winding point and the second winding point may be the same winding point or different winding points, when the first winding point and the second winding point are the same winding point, the first coil 220 is wound along the first direction, the second coil 230 is wound along the second direction, after the first coil 220 and the second coil 230 are wound around the magnetic core 100 for one circle, the first coil 220 is wound along the second direction, and the second coil 230 is wound along the first direction, that is, after the first coil 220 and the second coil 230 are wound and collided, the first coil 220 and the second coil 230 are respectively wound and connected along the opposite direction of the original winding direction, and are wound and connected on the magnetic core 100 in a reciprocating manner. It is understood that the number of windings of the first coil 220 and the second coil 230 is not particularly limited in this embodiment.

In some embodiments, referring to fig. 1, the magnetic core 100 may be ring-shaped or any other shape, such as square, etc. The connection wire 210 is wound around the magnetic core 100, that is, one end of the connection wire 210 extends from the inner circumference surface of the magnetic core 100 to the outer circumference surface of the magnetic core 100, or extends from the outer circumference surface of the magnetic core 100 to the inner circumference surface of the magnetic core 100. In some embodiments, the coil is a copper wire, using the formula

And calculating the length of the coil, wherein OD is the length of the outer diameter of the magnetic core 100, ID is the length of the inner diameter of the magnetic core 100, Ht is the height of the magnetic core 100, N is the number of winding turns, and the number of winding turns of the first coil 220 and the second coil 230 can be adaptively modified as required. In a specific embodiment, the first coil 220 and the second coil 230 have the same length, that is, one coil is wound from two sides of the core 100 by dividing into two halves, so that the voltage between each winding is reduced by half compared with the winding voltage directly wound by a single coil, and the capacitance of the equivalent capacitance of the inductor is reduced.

Referring to fig. 3, in some embodiments, the inductor further comprises: a first terminal 510 and a second terminal 520, wherein the first terminal 510 is connected with the other end of the first coil 220, that is, the first terminal 510 is connected with the end of the first coil 220, such as the end of the first coil 220 indicated by the arrow in fig. 1. The second terminal 520 is connected to the other end of the second coil 230, i.e. the second terminal 520 is connected to an end of the second coil 230, as indicated by the arrow in fig. 1 of the second coil 230. In some specific embodiments, the inductor further comprises: a first electron beam 310 and a second electron beam 320. One end of the first electronic wire 310 is connected to the other end of the first coil 220, and the other end of the first electronic wire 310 is connected to the first terminal 510, that is, the first electronic wire 310 is welded to the end of the first coil 220, as shown by the arrow of the first coil 220 in fig. 1, and the other end of the first electronic wire 310 is crimped to the first terminal 510. One end of the second electronic wire 320 is connected to the other end of the second coil 230, and the other end of the second electronic wire 320 is connected to the second terminal 520, that is, the second electronic wire 320 is welded to the end of the second coil 230, such as the end of the second coil 230 indicated by the arrow in fig. 1, and the other end of the second electronic wire 320 is crimped to the second terminal 520. The first terminal 510 and the second terminal 520 are used for inductive connection to external circuitry.

In some embodiments, the inductor further comprises a first insulator 410 and a second insulator 420. A first insulator 410 is provided at the junction of the first electrical wire 310 and the first coil 220, and a second insulator 420 is provided at the junction of the second electrical wire 320 and the second coil 230. Specifically, the first insulator 410 and the second insulator 420 are insulating heat shrink sleeves for protecting the welding point of the first electronic wire 310 and the first coil 220 and the welding point of the second electronic wire 320 and the second coil 230.

Referring to fig. 3, a second aspect of the present invention provides an inductor packaging apparatus.

In some embodiments, the inductor packaging apparatus includes a housing 600, the housing 600 is provided with a receiving cavity, a plurality of inductors as described in any one of the embodiments of the first aspect are placed in the receiving cavity, the number of the placed inductors can be adaptively adjusted according to actual requirements, and it can be understood that the size of the housing 600 of the electrical packaging apparatus is adaptively set according to the number of the inductors. Specifically, the inductor is fixed on the lower surface in the accommodating cavity of the housing 600 through the insulating tape, and certain isolation distances are arranged between the inductors and around the inductor and the housing 600, and the isolation distances can be set to be more than 6 mm.

In some embodiments, a heat conducting potting adhesive is filled in the accommodating cavity of the housing 600, and particularly, the heat conducting potting adhesive is a potting adhesive with a high heat conductivity coefficient, so as to improve the heat dissipation performance and the waterproof performance of the inductance packaging device.

In some embodiments, the casing 600 is an anodized casing, and the casing 600 is anodized. Specifically, the case 600 is made of aluminum, and a layer of oxide film is formed on the case 600 by applying an external current to the case 600 under the electrolyte and specific process conditions. Specifically, the inductance package described in this embodiment may be applied to a converter, and when the converter inductance package is installed outdoors, the aluminum casing 600 may be anodized to form a protective film, which may increase corrosion resistance and insulation performance of the converter inductance package, and may prolong the service life of the converter inductance package. Also, the anodized case 600 improves the heat dissipation efficiency of the inverter inductor package under natural convection.

Referring to fig. 4, a third aspect of the present invention provides an inverter.

In some embodiments, the inverter includes a body 700, and a number of inductor packages as described in any of the embodiments of the second aspect. The inductor packaging device is fixed on the surface of the inverter body 700, specifically, the upper outer edge of the inductor packaging device is provided with a mounting wing 610, the mounting wing 610 is provided with a plurality of screw holes, and the inductor packaging device is screwed with the surface of the inverter body 700 through the screw holes, so that the inductor packaging device is fixedly mounted on the inverter body 700. In some embodiments, a sealing ring is disposed at an outer edge of the inductor package housing 600, so as to improve the sealing performance of the installation of the inductor package to the inverter body 700.

In some embodiments, the inductor and/or inductor package described in the above embodiments may be applied to a transformer. The inductance coil is divided into the first coil 220 and the second coil 230, and the first coil 220 and the second coil 230 are respectively wound on the magnetic core 100 in a reciprocating mode from two sides of the magnetic core 100, so that the voltage difference between windings of the inductance coil is reduced, the generation of parasitic capacitance is reduced, and when the inductance is externally connected with wide-range voltage, the oscillation of the inductance current switch tube at the moment of conduction and closing is reduced, and the electromagnetic compatibility of the inductance of the converter is improved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

Claims

1. An inductor, comprising:

a magnetic core;

a coil, comprising: the magnetic core comprises a magnetic core, a connecting wire, a first coil and a second coil, wherein the connecting wire is wound on the magnetic core, one end of the first coil is connected with one end of the connecting wire, and one end of the second coil is connected with the other end of the connecting wire;

the first coil and the second coil are respectively wound on two sides of the connecting wire along the magnetic core, the first coil is wound on the magnetic core along a first direction, the second coil is wound on the magnetic core along a second direction, and the first direction is opposite to the second direction.

2. The inductor according to claim 1, wherein the first coil is wound to a first winding point along the first direction;

the second coil is wound to a second winding point along the second direction;

the first coil is wound on the magnetic core in a reciprocating mode between one end of the connecting wire and the first winding point;

the second coil is reciprocally wound on the magnetic core between the other end of the connecting wire and the second winding point.

3. The inductor of claim 2, further comprising:

a first terminal connected to the other end of the first coil;

a second terminal connected to the other end of the second coil.

4. The inductor of claim 3, further comprising:

one end of the first electronic wire is connected with the other end of the first coil, and the other end of the first electronic wire is connected with the first terminal;

and one end of the second electronic wire is connected with the other end of the second coil, and the other end of the second electronic wire is connected with the second terminal.

5. The inductor of claim 4, further comprising:

a first insulator disposed at a connection of the first electrical wire and the first coil;

a second insulator disposed at a connection of the second electrical wire and the second coil.

6. Inductance packaging hardware, its characterized in that includes:

a number of inductors according to any one of claims 1 to 5;

the casing, the casing is equipped with accepts the chamber, the inductance is placed accept the intracavity.

7. The inductor package device of claim 6, wherein the inductor is fixed in the receiving cavity;

and the accommodating cavity is filled with heat conduction pouring sealant.

8. The inductance package arrangement of claim 7, wherein said case is an anodized case.

9. An inverter, characterized by comprising:

a body;

a plurality of inductor package devices according to any one of claims 6 to 8, said inductor package devices being fixed to the surface of the housing.

10. The inverter of claim 9, further comprising: and the sealing ring is arranged on the outer edge of the shell.