CN220933867U - Encapsulation inversion inductance - Google Patents

Abstract

The utility model relates to a potting inverter inductor, which comprises a box body, an inverter inductor assembly, a baffle plate and a heat conduction potting adhesive. Wherein the box body comprises a cavity with an opening; the inversion inductance component comprises a plurality of inversion inductance components which are arranged in the box body at intervals; each inversion inductance component comprises two magnetic columns and two winding coils, the two winding coils are connected with each other and are respectively sleeved outside the two magnetic columns, and each winding coil is connected with a wire; the partition plate comprises a plurality of partition plates which are respectively arranged between the adjacent inverter inductance components; the heat conduction pouring sealant is poured into the cavity from the opening part to completely cover the inversion inductance component. According to the utility model, the plurality of inversion inductance components are encapsulated in the same box body, insulation and isolation are carried out between the inversion inductance components through the partition plates, the total volume of the inversion inductance components is effectively reduced while mutual insulation and stable functions of the inversion inductance components are ensured, and the miniaturization development of the energy storage inverter is facilitated.

Description

Encapsulation inversion inductance

Technical Field

The utility model belongs to the technical field of electronic elements, and particularly relates to a potting inverter inductor.

Background

An energy storage inverter, also called an energy storage converter (english name Power Conversion System, abbreviated as PCS), is an important energy conversion device that functions to convert electric energy from one form to another and to ensure efficient use of energy. The energy storage inverter core component comprises an inductance element, a capacitance element, a switching tube and a control circuit. The inductance element comprises a filter inductance and an inverter inductance.

The 200KW energy storage converter needs to use a plurality of inversion inductors, and in the prior art, a plurality of independent inversion inductors are usually respectively arranged in the energy storage converter, electromagnetic interference is easily caused between the plurality of inversion inductors in the installation mode and between the inversion inductors and other electronic elements, and the overall size of the plurality of independent inversion inductors is overlarge, so that the miniaturization development of the energy storage converter is not facilitated.

Disclosure of utility model

The utility model aims to solve one of the technical problems and provides a potting inverter inductor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a potted inductor comprising:

the box body comprises: comprising a cavity with an opening;

Inversion inductance component: comprises a plurality of boxes which are arranged at intervals in the box body; the inversion inductance assembly comprises two magnetic columns and two winding coils, the two winding coils are connected with each other and are respectively sleeved outside the two magnetic columns, each winding coil comprises an outgoing line end, each outgoing line end is connected with a wire, and one end of the wire, far away from the winding coil, extends to the outer side of the box body;

Partition board: the inverter comprises a plurality of inverter inductance components, wherein the number of the inverter inductance components is matched with that of the inverter inductance components; the partition board is connected with the box body and is respectively arranged between two adjacent inversion inductance components;

Heat conducting pouring sealant: the opening is filled and sealed into the cavity, and the inversion inductance component is completely covered.

The technical scheme solves the technical problem that the volume of a plurality of inversion inductors in the existing inverter is large, and the inversion inductors are encapsulated into the same box body through the insulation isolation of the inversion inductor assemblies through the partition plates, so that the effect of reducing the total volume of the inversion inductors while ensuring the mutual insulation and the stable function of the inversion inductors in the inverter can be achieved.

In some embodiments of the present utility model, the inverter inductance assembly further includes two magnetic cores, the two magnetic cores are disposed in parallel and spaced apart, and the two magnetic pillars are disposed between the two magnetic cores in an aligned manner.

In some embodiments of the present utility model, the inverter inductance assembly further includes two baffles, the two baffles are respectively disposed between the winding coil and the magnetic cores at two ends, and the baffles are respectively in contact connection with the magnetic cores and the winding coil, so as to prevent poor withstand voltage caused by mutual contact between two adjacent inverter inductance assemblies.

In some embodiments of the present utility model, a plurality of first limiting members are disposed on an end surface of the baffle plate opposite to one side of the winding coil; the first limiting pieces are arranged at intervals around the winding coil, and each first limiting piece is in contact connection with the winding coil so as to limit the winding coil and prevent the winding coil from shifting left and right.

In some embodiments of the present utility model, a plurality of second limiting members are disposed on an end surface of the baffle plate opposite to one side of the magnetic core; the second limiting pieces are arranged at intervals around the magnetic core, and each second limiting piece is connected with the magnetic core in a contact mode so as to limit the magnetic core.

In some embodiments of the present utility model, a plurality of heat dissipation bosses are arranged at intervals along the bottom surface of the cavity of the box body, and the heat dissipation bosses are arranged between two winding coils of each inverter inductance assembly to conduct heat generated by the operation of the winding coils.

In some embodiments of the present utility model, the two sides of the heat dissipation boss, which are close to the two winding coils, are formed into arc curved surfaces, and the two arc curved surfaces are respectively attached to the winding coils at the two sides of the heat dissipation boss, so as to better conduct heat generated by the working of the winding coils.

In some embodiments of the utility model, the heat dissipating boss is integrally formed with the case.

In some embodiments of the present utility model, the outgoing directions of two wires connected to two winding coils of the same inverter inductance assembly are opposite, and one ends of the two wires, which are far away from the winding coils, are arranged at two sides of the width direction of the box body, so that clients can connect and install the two wires.

In some embodiments of the utility model, a plurality of radiating fins are arranged along the peripheral wall of the box body, and the radiating fins are arranged to form a radiating air channel so as to radiate heat generated in the working process of the inductor, improve the working efficiency of the inductor and prevent the inductor from being damaged.

The utility model has the beneficial effects that:

1. the encapsulation inverter inductor provided by the utility model encapsulates the plurality of inverter inductor components into the same box body, and the inverter inductor components are insulated and isolated by the partition plate, so that the overall volume of the plurality of inverter inductors in the inverter can be effectively reduced while the mutual insulation and the stable function of the plurality of inverter inductors in the inverter are ensured, and the miniaturization development of the energy storage inverter is facilitated;

2. The encapsulated inverter inductor provided by the utility model is used for encapsulating the inverter inductor component, so that electromagnetic interference of other electronic elements in a circuit to the inverter inductor can be shielded;

3. According to the potting inverter inductor, two baffles are arranged in each inverter inductor assembly, and the first limiting piece and the second limiting piece are arranged on the baffles to limit the winding coil and the magnetic core respectively, so that the insulation problem caused by the fact that the winding coil is offset left and right and touches the box body can be prevented;

3. The heat radiation boss is arranged in the potting inverter inductor box body, so that heat generated by a winding coil when the inverter inductor assembly works is conducted to the outside, the integral heat radiation performance of the potting inverter inductor box is improved, and meanwhile, the heat radiation boss is arranged, so that the consumption of heat conduction potting adhesive is reduced, and the production cost is reduced;

4. The radiating fins are arranged outside the potting inverter inductor box body, and the radiating fins are arranged to form the radiating air duct, so that heat generated in the working process of the inverter inductor can be effectively radiated, the working efficiency of the inverter inductor is improved, and the inverter inductor is prevented from being damaged.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings, from which other drawings can be obtained by those skilled in the art without inventive effort.

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic structural diagram of an inverter inductance assembly according to the present utility model;

FIG. 3 is a schematic view of the structure of the case according to the present utility model;

Fig. 4 is a schematic diagram of a front structure of a baffle in the inverter inductance assembly;

Fig. 5 is a schematic view of a back structure of a baffle plate in the inverter inductance assembly;

wherein, the reference numerals are as follows:

1. A case body; 2. an inverter inductance assembly; 21. a winding coil; 211. a lead-out end; 22. a magnetic column; 23. a magnetic core; 24. a baffle; 241. a first limiting member; 242. a second limiting piece; 3. a wire; 4. a partition plate; 5. a heat dissipation boss; 6. and a heat radiating fin.

Detailed Description

The present application will be described and illustrated with reference to the accompanying drawings and examples in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. All other embodiments, which can be made by a person of ordinary skill in the art based on the embodiments provided by the present application without making any inventive effort, are intended to fall within the scope of the present application.

It is apparent that the drawings in the following description are only some examples or embodiments of the present application, and it is possible for those of ordinary skill in the art to apply the present application to other similar situations according to these drawings without inventive effort.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "a" and "an" and "the" and similar referents in the context of describing the application are not intended to be limiting in number but may be construed to mean in the singular or in the plural. The terms "comprising," "including," "having," and any variations thereof, are intended to cover a non-exclusive inclusion.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; 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.

In one exemplary embodiment of a potted inverter inductor of the utility model, shown in fig. 1-5, the potted inverter inductor is suitable for use in a 200KW energy storage converter and includes a housing 1, an inverter inductor assembly 2, a spacer 4 and a thermally conductive potting adhesive (not shown).

Wherein, the box body 1 is of an open structure, and the inside of the box body comprises a cavity with a rectangular opening, and the rectangular opening is arranged on the upper surface of the box body 1.

The inverter inductance components 2 comprise three, and the three inverter inductance components 2 are arranged in the cavity of the box body 1 at intervals. Each inverter inductance assembly 2 comprises two parallel cylindrical magnetic columns 22 and two winding coils 21 which are arranged at intervals, the two winding coils 21 are formed by spirally winding single-layer flat enameled wires, the two winding coils 21 are connected with each other and are respectively sleeved outside the two magnetic columns 22, each winding coil 21 comprises an outgoing line end, each outgoing line end is connected with one conducting wire 3, and it can be understood that the same inverter inductance assembly 2 is connected with two conducting wires 3 in total. The end of the wire 3 remote from the winding coil 21 extends through the opening of the case 1 to the outside of the case 1.

The two separation plates 4 are respectively arranged between the two adjacent inverter inductance assemblies 2, and are used for preventing the adjacent two inverter inductance assemblies 2 from contacting each other to cause poor withstand voltage. The two sides of the inverter inductance components 2, which are close to the two sides, of the partition board 4 are formed into arc-shaped curved surfaces and are respectively attached to the winding coils 21 in the two inverter inductance components 2. The partition board 4 is connected with the box body 1 and is integrally formed with the box body 1. The number of the spacers 4 is matched with the number of the inverter inductance components 2.

The heat conduction pouring sealant is used for conducting heat generated in the working process of the inverter inductance component 2 to the outside, and preventing the inductor from being damaged or the efficiency from being reduced due to heat generated in the working process of the inverter inductance component 2. The heat conduction pouring sealant is placed in the three inversion inductance components 2 in the box body 1, is connected with the lead 3, is poured into the cavity of the box body 1 from the opening, and completely covers the three inversion inductance components 2.

The technical scheme solves the technical problem that the volume of a plurality of inversion inductances in the existing inverter is large, and the inversion inductances are encapsulated in the same box body 1 through the encapsulation of the inversion inductances 2, and the inversion inductances are isolated through the partition board 4, so that the effects of reducing the total volume of the inversion inductances while ensuring mutual insulation and stable functions among the inversion inductances in the inverter can be achieved.

In some embodiments of the present utility model, the inverter inductance assembly 2 further includes two magnetic cores 23, and the cross section of the magnetic cores 23 is elliptical. The two magnetic cores 23 are identical in shape and size and are arranged in parallel at intervals. The two magnetic columns 22 are arranged between the two magnetic cores 23 at intervals, and two axial ends of each magnetic column 22 are fixedly connected with the two magnetic cores 23 respectively.

In some embodiments of the present utility model, the inverter inductance assembly 2 further includes two elliptical baffles 24, the two baffles 24 are respectively disposed between the winding coil 21 and the magnetic cores 23 at two ends, two circular through holes are spaced apart from each other on the baffles 24, and the two magnetic columns 22 respectively penetrate through the two circular through holes. The shield 24 is connected to the core 23 and the winding coil 21 in contact with each other.

In some embodiments of the present utility model, a plurality of first limiting members 241 are disposed on an end surface of the baffle 24 opposite to one side of the winding coil 21, and the first limiting members 241 are buckles. The plurality of first limiting pieces 241 are equally divided into two groups, the two groups of first limiting pieces 241 are respectively arranged around the two winding coils 21 in the inverter inductance assembly 2 at intervals, and each first limiting piece 241 is in contact connection with the winding coil 21 so as to limit the winding coil 21, and the winding coil 21 is prevented from being offset left and right to touch the box body 1 to cause insulation problems. In the present embodiment, eight first stoppers 241 are provided in total.

In some embodiments of the present utility model, a plurality of second limiting members 242 are disposed on an end surface of the baffle 24 opposite to one side of the magnetic core 23, the second limiting members 242 are connected with the partition board 4 through an elongated connecting plate, the elongated connecting plate is disposed around the magnetic core 23, and an end surface near the magnetic core 23 is in contact connection with the magnetic core 23 to limit the magnetic core 23. The second limiting members 242 are connected to the end surface of the elongated connecting plate away from the partition plate 4 at intervals, i.e. the second limiting members 242 are arranged around the magnetic core 23 at intervals. The second limiting piece 242 comprises a first limiting section and a second limiting section which are bent in sequence, the end face, close to the magnetic core 23, of the first limiting section is in contact connection with the side end face of the magnetic core 23, the end face, close to the magnetic core 23, of the second limiting section is in contact connection with the end face, far away from the partition board 4, of the magnetic core 23, and the second limiting piece 242 is matched with the partition board 4 to limit the magnetic core 23 from multiple directions. In the present embodiment, three second stoppers 242 are provided in total.

In some embodiments of the present utility model, three heat dissipation bosses 5 are arranged at intervals along the bottom surface of the cavity of the box body 1, and the heat dissipation bosses 5 are arranged between two winding coils 21 of each inverter inductance assembly 2, so as to conduct heat generated by the winding coils 21 to the outside when the inverter inductance assemblies 2 work, thereby improving the overall heat dissipation performance of the present utility model, and simultaneously being beneficial to reducing the consumption of heat conduction pouring sealant and reducing the production cost of the present utility model.

Further, for better heat conduction, two side surfaces of the heat dissipation boss 5, which are close to the two winding coils 21, are formed into arc-shaped curved surfaces, and the two arc-shaped curved surfaces are respectively attached to the winding coils 21 at two sides of the heat dissipation boss 5.

Further, the heat dissipation boss 5 and the box body 1 are integrally formed.

In some embodiments of the present utility model, the outgoing directions of the two wires 3 connected to the two winding coils 21 of the same inverter inductance assembly 2 are opposite, and one ends of the two wires 3 far away from the winding coils 21 are arranged at two sides of the width direction of the box body 1, so that a customer can connect and install the present utility model.

In some embodiments of the present utility model, in order to further dissipate heat generated by the operation of the inverter inductance assembly 2, a plurality of heat dissipation fins 6 are disposed along the peripheral wall of the box body 1, and the heat dissipation fins 6 are arranged at intervals to form a heat dissipation air channel.

Finally, it should be noted that: in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same; while the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present utility model or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the utility model, it is intended to cover the scope of the utility model as claimed.

Claims (10)

1. A potted inverter inductor, comprising:

the box body comprises: comprising a cavity with an opening;

Inversion inductance component: the multiple boxes are arranged in the box body at intervals; the inversion inductance assembly comprises two magnetic columns and two winding coils, the two winding coils are connected with each other and are respectively sleeved outside the two magnetic columns, each winding coil comprises an outgoing line end, each outgoing line end is connected with a wire, and one end of the wire, far away from the winding coil, extends to the outer side of the box body;

Partition board: the inverter comprises a plurality of inverter inductance components, wherein the number of the inverter inductance components is matched with that of the inverter inductance components; the partition board is connected with the box body and is respectively arranged between two adjacent inversion inductance components;

Heat conducting pouring sealant: and filling and sealing the opening into the cavity, and completely covering the inverter inductance component.

2. The potted inverter inductor of claim 1 wherein the inverter inductor assembly further comprises two magnetic cores, the two magnetic cores being spaced apart in parallel, the two magnetic posts being disposed in an array between the two magnetic cores.

3. The encapsulated inverter inductor of claim 2, wherein the inverter inductor assembly further comprises two baffles respectively disposed between the winding coil and the magnetic cores at both ends, the baffles being in contact with and connected to the magnetic cores and the winding coil, respectively.

4. The encapsulated inverter inductor according to claim 3, wherein a plurality of first stoppers are provided on an end surface of the baffle plate on one side with respect to the winding coil; the first limiting parts are arranged around the winding coil at intervals, and each first limiting part is in contact connection with the winding coil.

5. The encapsulated inverter inductor according to claim 3 or 4, wherein a plurality of second stoppers are provided on an end surface of the baffle plate on one side with respect to the magnetic core; the second limiting parts are arranged around the magnetic core at intervals, and each second limiting part is in contact connection with the magnetic core.

6. The encapsulated inverter inductor of claim 1, wherein a plurality of heat dissipating bosses are disposed in spaced relation along a bottom surface of the cavity of the case, the heat dissipating bosses being disposed between two winding coils of each inverter inductor assembly.

7. The encapsulated inverter inductor of claim 6, wherein the two sides of the heat dissipating boss adjacent to the two winding coils are formed as curved surfaces, and the curved surfaces are respectively attached to the winding coils at the two sides of the heat dissipating boss.

8. The potted inverter inductor of claim 6 or 7 wherein the heat dissipating boss is integrally formed with the case.

9. The encapsulated inverter inductor of claim 1, wherein the two wires connected to the two winding coils of the same inverter inductor assembly are opposite in outgoing direction, and one ends of the two wires, which are far away from the winding coils, are arranged on two sides of the box body in the width direction.

10. The potted inverter inductor of claim 1 wherein a plurality of heat dissipating fins are provided along the peripheral wall of the box.