CN218006126U

CN218006126U - Multi-path current equalizing device

Info

Publication number: CN218006126U
Application number: CN202221594609.2U
Authority: CN
Inventors: 张艳清; 赵琳; 穆峰; 马逊; 杨鑫; 余笔超
Original assignee: Sichuan Xingtu Kunpeng Aerospace Technology Co ltd; Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Current assignee: Sichuan Xingtu Kunpeng Aerospace Technology Co ltd; Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-12-09
Anticipated expiration: 2032-06-24

Abstract

The utility model relates to the field of electronic technology, a multichannel flow straightener is disclosed. Wherein, the device includes: the magnetic core type bus comprises a first bus bar, a second bus bar, a third bus bar, a fourth bus bar, a first magnetic core, a second magnetic core, a third magnetic core and an insulating layer, wherein the second bus bar is stacked on the first bus bar, one end of the second bus bar is aligned with one end of the first bus bar, the third bus bar is partially stacked on the first bus bar, the third bus bar is spaced from the second bus bar by a preset distance, the fourth bus bar is stacked on the second bus bar and the third bus bar, one end of the fourth bus bar is aligned with one end of the third bus bar, the first magnetic core is arranged on the periphery of an overlapping area of the first bus bar and the second bus bar, the second magnetic core is arranged on the periphery of the overlapping area of the first bus bar and the fourth bus bar, the third magnetic core is arranged on the periphery of the overlapping area of the third bus bar and the fourth bus bar, and the insulating layer is arranged between the bus bars in stacked contact. Therefore, the current of the branch where each parallel device is located can be balanced, and meanwhile, the whole current equalizing device is ensured to have certain compactness.

Description

Multi-path current equalizing device

Technical Field

The utility model relates to the field of electronic technology, especially, relate to a multichannel flow straightener.

Background

With the continuous increase of the capacity of a power electronic system, the structure of a power device serving as the core of the power electronic system undergoes multiple iterations to meet the requirement of higher current capacity, and when the limit current capacity of a single device still cannot meet the requirement of the system, a plurality of power devices are connected in parallel to form a relatively economic method. In order to distribute the current of the parallel devices uniformly, it is usually necessary to design a bus bar with high spatial symmetry or to use a ferromagnetic coupling type current sharing reactor to realize the static and dynamic current sharing of each device between the parallel branches.

The existing current sharing reactor is a three-port device composed of two coils (with different coil ends connected) wound on the same iron core, wherein the two coils have the same number of turns, when the currents of parallel branches are different, the coils wound on the iron core generate induced potentials due to the magnetic coupling effect of the iron core, and the currents of the parallel branches tend to be consistent due to the existence of the induced potentials, so that the current sharing purpose is realized.

The current sharing reactor can restrain the current rise rate to achieve dynamic current sharing and simultaneously has smaller loss, but when the number of parallel devices is larger, the number of the input current sharing reactors also needs to be increased. In addition, the winding structure makes the current sharing reactor have another shortcoming when the branch current is great: when the branch current is large, in order to meet the current-carrying capacity requirement, a thicker coil needs to be adopted for winding, so that the size of the whole current-sharing reactor is increased, and the compactness of the whole system is further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a multichannel flow straightener can solve the technical problem among the prior art.

The utility model provides a multichannel flow straightener, wherein, the device includes: first female arranging, second female arranging, third female arranging, fourth female arranging, first magnetic core, second magnetic core, third magnetic core and insulating layer, the female row of second piles up on the first female arranging just the female one end of arranging of second aligns with the female one end of arranging of first, the female part of arranging of third piles up on the first female arranging just the female row of third with the female predetermined distance apart of second, the female row of fourth piles up the female row of second with the female one end of arranging of third aligns, first magnetic core set up first female arranging with the periphery of second crossover zone, the second magnetic core set up in first female arranging with the periphery of female crossover zone of fourth, the third magnetic core sets up the female periphery of arranging of crossover zone of third and fourth, the insulating layer sets up and piles up between the female arranging of contact.

Preferably, the first busbar, the second busbar, the third busbar and the fourth busbar are all provided with screw holes and screws.

Preferably, the screw is a clinch screw.

Preferably, an insulating material is filled between the third busbar and the second busbar.

Preferably, the first magnetic core, the second magnetic core and the third magnetic core each comprise two spliced UF-type magnetic cores or UU-type magnetic cores.

Preferably, the first busbar, the second busbar, the third busbar and the fourth busbar are L-shaped structures, short sides of the L-shaped structures are provided with bending parts, and long sides of the L-shaped structures are stacking parts.

Preferably, in the horizontal direction, the first busbar and the fourth busbar are symmetrically arranged, and the second busbar and the third busbar are symmetrically arranged.

Through the technical scheme, the current of the branch where each parallel device is located can be balanced, and meanwhile, the whole current equalizing device is ensured to have certain compactness.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 shows a schematic structural diagram of a multi-path flow equalizing device according to an embodiment of the present invention;

fig. 2 shows an exploded view (without insulation) of a multi-way flow straightener in accordance with an embodiment of the present invention;

fig. 3 shows a front view of a multi-way flow straightener according to an embodiment of the present invention.

Description of the reference numerals

1. A first busbar; 2 a second busbar; 3, a third busbar; 4, a fourth busbar;

5. a first magnetic core; 6 a second magnetic core; 7 a third magnetic core; 8, a screw; 9 an insulating layer.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 and 3, the embodiment of the present invention provides a multi-path flow equalizing device, wherein, the device includes: first female 1, the female 2, the female 3, the female 4, first magnetic core 5, second magnetic core 6, third magnetic core 7 and the insulating layer 9 of arranging of second, the female 2 of second is piled up on the female 1 of first row just the female one end of 2 of second with the one end of the female 1 of first row aligns, the female 3 part of third is piled up on the female 1 of first row just the female 3 of third is arranged with the female 2 of second is apart from predetermined distance, the female 4 of fourth is piled up on the female 2 of second with the female 3 of third is arranged the one end of 4 with the female 3 of third is arranged and is aligned, first magnetic core 5 sets up at the female 1 of first row and the female 2 overlapping region's of second periphery, second magnetic core 6 sets up at the female 1 of first row and the female 4 overlapping region's of fourth periphery, third magnetic core 7 sets up the female 3 of third and the female 4 regional periphery of fourth, insulating layer 9 sets up between the female overlapping of the female row of piling up the contact.

That is, the first magnetic core is disposed at a position where only the first bus bar and the second bus bar are overlapped, the second magnetic core is disposed at a position where only the first bus bar and the fourth bus bar are overlapped (a space corresponding to a predetermined distance is formed between the first bus bar and the fourth bus bar), and the third magnetic core is disposed at a position where only the third bus bar and the fourth bus bar are overlapped. Electrical isolation can be ensured by insulating layers between different layers of busbars (such as between a first busbar and a second busbar, between the first busbar and a third busbar, between the second busbar and a fourth busbar, and between the third busbar and the fourth busbar), and electrical isolation can be ensured by leaving enough gaps (i.e., predetermined distances) between the same layers of busbars (such as between the second busbar and the third busbar).

More specifically, the currents of the first busbar and the second busbar are associated due to the coupling effect of the first magnetic core, the currents of the third busbar and the fourth busbar are associated due to the coupling effect of the third magnetic core, and the currents of the first busbar and the fourth busbar are associated due to the coupling effect of the second magnetic core, so that the currents of the second busbar and the third busbar are indirectly associated, and the balance degree of the currents among the busbars is further improved.

Furtherly, set up the insulating layer and can be so that each female electrical insulation of arranging between obtaining ensureing, arrange between the electric current and produce the relevance through encircleing at female outlying magnetic core coupling of arranging, the cooperation of the aforesaid the two makes multichannel flow straightener compare in the current female effect of flow equalizing that has better, have certain advantage in the aspect of compact structure nature in the current reactor of flow equalizing that coils winding was made on the iron core.

Wherein for the above-described end alignment, further reference may be made to fig. 3. Specifically, taking fig. 3 as an example, the left end of the second busbar is aligned with the left end of the first busbar, and the right end of the fourth busbar is aligned with the right end of the third busbar.

According to the utility model relates to an embodiment, first female arranging 1 female arranging 2 of second female arranging 3 of third female arranging 4 all is provided with screw and screw 8.

The screw holes are formed in each busbar and can be used for connecting each parallel device or a branch where the parallel devices are located; through set up the screw on every female arranging, can be used for connecting extra switching row so that the installation and the location of whole female arranging of flow equalizing are convenient for.

The screw 8 is, for example, a clinch screw.

According to the utility model relates to an embodiment, the third is female arrange 3 with it has insulating material to fill between female row 2 of second.

That is, the space corresponding to the predetermined distance between the two may be filled with the insulating material, whereby the electrical isolation may be better achieved.

According to the utility model relates to an embodiment, first magnetic core 5 second magnetic core 6 and third magnetic core 7 all include the UF type magnetic core or the UU type magnetic core of two concatenations.

That is, every magnetic core can be formed by two UF type magnetic cores or the concatenation of UU type magnetic core, and each magnetic core and female location installation of arranging can realize through insulating structure, in order not to obscure the utility model discloses, no longer give unnecessary details here.

According to the utility model relates to an embodiment, as shown in fig. 2, first female arranging 1 female arranging 2 of second female arranging 3 with female 4 of arranging of fourth is L type structure, and the minor face in the L type structure has the part of bending, and the long limit in the L type structure is the part of piling up.

For example, the first busbar and the fourth busbar have the same size, and the second busbar and the third busbar have the same size.

According to the utility model relates to an embodiment, on the horizontal direction, first female row 1 with the female 4 symmetry settings of arranging of fourth, female row of second 2 with female 3 symmetry settings of arranging of third.

Through the design of space structure consistency and highly symmetrical layout, the impedance characteristics of the first busbar and the fourth busbar have better consistency, and the second busbar and the third busbar also have better impedance matching degree; meanwhile, when the currents flowing through the two busbars encircled by the magnetic core are different, the currents of the two busbars tend to be more consistent under the action of induced potential due to the magnetic coupling effect of the magnetic core, and dynamic balance is further formed.

Use the electromagnetism to launch the field as the example, through connecting on parallel devices place branch the utility model discloses above-mentioned embodiment multichannel flow straightener, can be when guaranteeing parallel devices developments flow equalizing, make the holistic compact structure of system still keep in the tolerance to can reduce the cost and the pressure of the design of flow equalizing of system to a certain extent.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the directional terms such as "front, back, upper, lower, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, and in the case of not making a contrary explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms do not have special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-channel current share device, the device comprising: first female arranging (1), second female arranging (2), third female arranging (3), fourth female arranging (4), first magnetic core (5), second magnetic core (6), third magnetic core (7) and insulating layer (9), the second is female to be arranged (2) and is piled up on first female arranging (1) just the one end that the second was female arranges (2) with the one end of first female arranging (1) aligns, third female arranging (3) part is piled up on first female arranging (1) just third female arranging (3) with second female arranging (2) is apart from predetermined distance, fourth female arranging (4) is piled up on second female arranging (2) with third female arranging (3) just the one end that the fourth was female arranged (4) with the one end of third female arranging (3) aligns, first magnetic core (5) set up at first female arranging (1) with second female arranging (2) overlapping region's periphery, second magnetic core (6) set up at first female arranging (1) and fourth female arranging (4) overlapping region's overlapping region sets up at the female peripheral magnetic core (9) of overlapping region, the female arranging (7) sets up at the peripheral female arranging and is female arranging the peripheral magnetic core (9) contact region of overlapping region.

2. The device according to claim 1, characterized in that the first busbar (1), the second busbar (2), the third busbar (3) and the fourth busbar (4) are provided with screw holes and screws (8).

3. Device according to claim 2, characterized in that the screw (8) is a clinch screw.

4. A device according to claim 3, characterized in that an insulating material is filled between the third busbar (3) and the second busbar (2).

5. The arrangement according to claim 1, characterized in that the first (5), the second (6) and the third (7) magnetic cores each comprise two spliced UF-or UU-cores.

6. The device according to claim 1, characterized in that the first busbar (1), the second busbar (2), the third busbar (3) and the fourth busbar (4) are of an L-shaped structure, the short sides of which have bent portions and the long sides of which are stacked portions.

7. The device according to claim 6, characterized in that, in a horizontal direction, the first busbar (1) and the fourth busbar (4) are symmetrically arranged, and the second busbar (2) and the third busbar (3) are symmetrically arranged.