CN217740831U - Busbar structure and frequency converter - Google Patents

Abstract

The application belongs to the technical field of electrical device design, and particularly relates to a busbar structure and a frequency converter. The female structure of arranging includes: the carrier plate, the first conductive bar, the second conductive bar and the third conductive bar are sequentially arranged at intervals; the first conductive bar is fixedly connected to the carrier plate through a first insulating support piece, the second conductive bar is fixedly connected to the first conductive bar through a second insulating support piece, the third conductive bar is fixedly connected to the second conductive bar through a third insulating support piece, and the carrier plate is used for being fixedly connected to an electric appliance; the first connecting terminals, the second connecting terminals and the third connecting terminals are equal in number and are arranged in a one-to-one correspondence mode, and one corresponding first connecting terminal, one corresponding second connecting terminal and one corresponding third connecting terminal form a group of terminal groups used for being connected with an electric appliance. Use the technical scheme of this application to have solved among the prior art and adopted the cable to connect and lead to the staff install and remove the very inconvenient problem of work.

Description

Busbar structure and frequency converter

Technical Field

The application belongs to the technical field of electrical devices, and particularly relates to a busbar structure and a frequency converter.

Background

In the prior art, when a plurality of electrical appliances need to be connected in an alternating current manner, a common cable is usually adopted for connection, namely a first phase electric connection terminal of a first electrical appliance is connected with a first phase electric connection terminal of a second electrical appliance by adopting one cable, a second phase electric connection terminal of the first electrical appliance is connected with a second phase electric connection terminal of a second machine by adopting another cable, and the like (namely, when the electrical appliances are two-phase electric equipment, the electrical appliances only have the first phase electric connection terminal and the second phase electric connection terminal, and when the electrical appliances are three-phase electric equipment, the electrical appliances have the first phase electric connection terminal, the second phase electric connection terminal and the third phase electric connection terminal). Therefore, when the number of the electric appliances to be connected is more, the more cables are used, and the wiring installation work of workers is very complicated and inconvenient. Likewise, when the electric appliances need to be maintained, the worker is inconvenient to disassemble the cable between the electric appliances.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a female structure and converter of arranging, aim at solving and adopt the cable to connect among the prior art and lead to the staff install and remove work very inconvenient problem.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: a busbar structure comprising: the device comprises a carrier plate, a first conductive bar, a second conductive bar, a third conductive bar, a first insulating support piece, a second insulating support piece and a third insulating support piece which are sequentially arranged at intervals; the first conductive bar is fixedly connected to the carrier plate through a first insulating support, the second conductive bar is fixedly connected to the first conductive bar through a second insulating support, and the third conductive bar is fixedly connected to the second conductive bar through a third insulating support;

the first conductive bar is electrically connected with a plurality of first connecting terminals which are arranged at intervals along the length direction of the first conductive bar; the second conductive bar is electrically connected with a plurality of second connecting terminals which are arranged at intervals along the length direction of the second conductive bar; the third conductive bar is electrically connected with a plurality of third connecting terminals, and the plurality of third connecting terminals are arranged at intervals along the length direction of the third conductive bar; the first connecting terminals, the second connecting terminals and the third connecting terminals are equal in number and are arranged in a one-to-one correspondence mode, a group of terminal groups used for being connected with an electric appliance are formed by the corresponding first connecting terminals, the second connecting terminals and the third connecting terminals, and the carrier plate is used for being fixedly connected to the electric appliance.

In one embodiment, the first conductor bar and each first connecting terminal, the second conductor bar and each second connecting terminal and the third conductor bar and each third connecting terminal are fixedly connected through bolts and nuts; or the first conductive bar and each first connecting terminal, the second conductive bar and each second connecting terminal and the third conductive bar and each third connecting terminal are riveted and fixed; or the first conductive bar and each first connecting terminal, the second conductive bar and each second connecting terminal, and the third conductive bar and each third connecting terminal are welded and fixed; or the first conductive bar and each first connecting terminal are integrally formed components; the second conductive bar and each second connecting terminal are integrally formed components; the third conductive bar and each third connecting terminal are integrally formed members.

In one embodiment, each of the first connection terminals, each of the second connection terminals, and each of the third connection terminals extend toward the same side with respect to the carrier board; in addition, in the same group of terminal groups, the first connecting terminal, the second connecting terminal and the third connecting terminal are sequentially staggered along the extension direction of the busbar structure.

In one embodiment, the first connecting terminal is a straight strip, and the second connecting terminal and the third connecting terminal have a bent portion, so that the ends of the first connecting terminal, the second connecting terminal and the third connecting terminal, which are far away from the carrier board, are all on the same straight line parallel to the extending direction of the first conductive bar.

In one embodiment, the first conductive bar, the second conductive bar and the third conductive bar are electrically connected with output terminals, and the output terminals extend along a direction opposite to the extending direction of the first connection terminals.

In one embodiment, the number of the output terminals electrically connected to the first conductive bar, the number of the output terminals electrically connected to the second conductive bar, and the number of the output terminals electrically connected to the third conductive bar are equal and are arranged in a one-to-one correspondence, and the output terminals electrically connected to the first conductive bar, the output terminals electrically connected to the second conductive bar, and the output terminals electrically connected to the third conductive bar are sequentially arranged in a staggered manner along the extension direction of the busbar structure.

In one embodiment, both ends of the carrier plate are bent towards one side where the first conductive bar is located, so that both ends of the carrier plate are used for being connected to the side wall of the shell of the corresponding electrical appliance; or both ends of the carrier plate are bent towards one side departing from the first conductive bar, so that both ends of the carrier plate are used for being connected to the side wall of the shell of the corresponding electric appliance; or one end of the carrier plate is bent towards one side where the first conductive bar is located, and the other end of the carrier plate is bent towards one side away from the first conductive bar, so that the two ends of the carrier plate are used for being connected to the side wall of the shell of the corresponding electric appliance.

In one embodiment, the carrier plate is a sheet metal part; or the carrier plate is an insulating plate.

According to another aspect of the embodiments of the present application, there is provided a frequency converter, including:

a plurality of electric appliances which are arranged side by side, and each electric appliance is provided with a wiring terminal group; and the number of the first and second groups,

the bus bar structure is positioned on the same side of a plurality of electric appliances, and a group of terminal groups of the bus bar structure is electrically connected with a wiring terminal group of one electric appliance.

In one embodiment, the connection terminal group of each electrical appliance includes a first phase electrical connection terminal, a second phase electrical connection terminal and a third phase electrical connection terminal, and the first connection terminal, the second connection terminal and the third connection terminal of the same group of terminals are electrically connected with the first phase electrical connection terminal, the second phase electrical connection terminal and the third phase electrical connection terminal respectively.

The embodiment of the application has at least the following beneficial effects:

use the utility model provides a female row's structure exchanges between to many electrical apparatus and connects, this female support plate of arranging the structure, first electrically conductive row, the electrically conductive row of second and the electrically conductive row of third are interval arrangement in proper order, first electrically conductive row is through first insulating support piece fixed connection in the support plate, electrically conductive row of second is through the first insulating support piece fixed connection of electrically conductive row of second, electrically conductive row of third is through the electrically conductive row of third insulating support piece fixed connection in the second, make the support plate like this, first electrically conductive row, electrically conductive row of second and the electrically conductive row of third assemble the formula structure that forms, the staff can wholly get and put this female row's structure, and, through support plate fixed connection on electrical apparatus, can be with whole female row's structure fixed mounting on electrical apparatus. In the busbar structure, because the plurality of first connecting terminals electrically connected with the first conducting bar, the plurality of second connecting terminals electrically connected with the second conducting bar and the plurality of third connecting terminals electrically connected with the third conducting bar are equal in number and are arranged in a one-to-one correspondence manner, and one corresponding first connecting terminal, one second connecting terminal and one third connecting terminal form a group of terminal groups for connecting an electric appliance, therefore, when a worker applies the busbar structure to connect a plurality of electric appliances, the worker only needs to connect each group of terminal groups to the corresponding electric appliance, and can conveniently and quickly complete wiring installation work. Correspondingly, when the electrical apparatus need be maintained, the staff is after disconnecting each first connecting terminal, each second connecting terminal and each third connecting terminal and electrical apparatus, then only need to dismantle the support plate from the electrical apparatus, can take off the whole structure of arranging, and it is very convenient to dismantle work.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a first schematic structural diagram of a busbar structure according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a busbar structure according to a first embodiment of the present invention;

FIG. 3 is an exploded view of the busbar arrangement shown in FIG. 1;

fig. 4 is a schematic structural diagram of a busbar structure according to a second embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second busbar structure according to a second embodiment of the present invention;

FIG. 6 is an exploded view of the busbar arrangement shown in FIG. 4;

fig. 7 is a schematic structural diagram of the frequency converter provided by the present invention.

Wherein, in the figures, the respective reference numerals:

100. a busbar structure;

10. a carrier plate;

20. a first conductive bar; 21. a first connection terminal;

30. a second conductive bar; 31. a second connection terminal;

40. a third conductive bar; 41. a third connection terminal;

50. a curved portion;

60. an output terminal;

71. a first insulating support; 72. a second insulating support; 73. a third insulating support;

81. a bolt; 82. a nut;

200. an electrical appliance; 201. a first phase electrical connection terminal; 202. a second phase electrical connection terminal; 203. and a third phase electric wiring terminal.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 and intended to be illustrative of the present application embodiments and are not to be construed as limiting the present application embodiments.

In the description of the embodiments of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to orientations or positional relationships that are based on the orientations or positional relationships illustrated in the drawings, and are used merely to facilitate description of the embodiments of the present application and to simplify the description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the embodiments of the present application.

Furthermore, the terms "first", "second", etc. 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 defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

In the embodiments of the present application, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

The first embodiment is as follows:

as shown in fig. 1 to fig. 3 and fig. 7, a busbar structure 100 according to an embodiment of the present invention includes: a carrier plate 10, a first conductive bar 20, a second conductive bar 30, a third conductive bar 40, and a first insulating support 71, a second insulating support 72, and a third insulating support 73; during assembly, the first conductive bar 20 is fixedly connected to the carrier plate 10 through the first insulating support 71, the second conductive bar 30 is fixedly connected to the first conductive bar 20 through the second insulating support 72, the third conductive bar 40 is fixedly connected to the second conductive bar 30 through the third insulating support 73, and the carrier plate 10 is fixedly connected to the electrical appliance 200 through screws. The first conductive bar 20 is electrically connected to a plurality of first connection terminals 21, and the plurality of first connection terminals 21 are arranged at intervals along the length direction of the first conductive bar 20; the second conductive bar 30 is electrically connected with a plurality of second connection terminals 31, and the plurality of second connection terminals 31 are arranged at intervals along the length direction of the second conductive bar 30; the third conductive bar 40 is electrically connected with a plurality of third connection terminals 41, and the plurality of third connection terminals 41 are arranged at intervals along the length direction of the third conductive bar 40; the first connecting terminals 21, the second connecting terminals 31 and the third connecting terminals 41 are equal in number and are arranged in a one-to-one correspondence manner, and one first connecting terminal 21, one second connecting terminal 31 and one third connecting terminal 41 which correspond to each other form a group of terminal groups for connecting one electrical appliance 200.

Use the utility model provides a female row structure 100 carries out AC connection between to many electrical apparatus 200, this female row structure 100's support plate 10, first electrically conductive row 20, the electrically conductive row 30 of second and the electrically conductive row 40 of third are interval arrangement in proper order, first electrically conductive row 20 is through first insulation support piece 71 fixed connection in support plate 10, the electrically conductive row 30 of second is through second insulation support piece 72 fixed connection in first electrically conductive row 20, the electrically conductive row 40 of third is through third insulation support piece 73 fixed connection in the electrically conductive row 30 of second, make like this support plate 10, first electrically conductive row 20, the electrically conductive row 30 of second and the electrically conductive row 40 assembly of third form into the integral type structure, the staff can wholly get this female row structure 100 of putting, and, through support plate 10 fixed connection on electrical apparatus 200, can be with whole female row structure 100 fixed mounting on electrical apparatus 200. In the busbar structure 100, since the number of the first connection terminals 21 electrically connected to the first conductive bar 20, the second connection terminals 31 electrically connected to the second conductive bar 30, and the third connection terminals 41 electrically connected to the third conductive bar 40 is equal and are arranged in a one-to-one correspondence, and the corresponding first connection terminal 21, second connection terminal 31, and third connection terminal 41 form a group of terminal groups for connecting an electrical appliance 200, when a worker connects the busbar structure 100 among a plurality of electrical appliances 200, the worker only needs to connect each group of terminal groups to the corresponding electrical appliance 200, and thus the wiring installation work can be conveniently and quickly completed. Correspondingly, when the electrical apparatus 200 needs to be maintained, a worker disconnects each first connection terminal 21, each second connection terminal 31, and each third connection terminal 41 from the electrical apparatus 200, and then only needs to detach the carrier plate 10 from the electrical apparatus 200, the overall busbar structure 100 can be taken down, and the detachment work is very convenient. In addition, compare with the mode that adopts the cable to carry out ac connection between many electrical apparatus 200 among the prior art, adopt the utility model provides a female structure 100 of arranging carries out ac connection to many electrical apparatus 200, can make interconnecting link between electrical apparatus 200 and another electrical apparatus 200 succinct more, pleasing to the eye.

Each of the first connection terminals 21, each of the second connection terminals 31, and each of the third connection terminals 41 extend toward the same side with respect to the carrier board 10; in the same terminal group, the first connection terminal 21, the second connection terminal 31, and the third connection terminal 41 are arranged in order along the extending direction of the busbar structure 100, and the first connection terminal 21, the second connection terminal 31, and the third connection terminal 41 are arranged in order in a staggered manner. In this way, the first connection terminal 21, the second connection terminal 31 and the third connection terminal 41 are arranged in a predetermined order, so that a worker can quickly determine a correct connection position in the process of performing ac connection with the corresponding terminals of the electrical appliance 200 by using the busbar structure 100, thereby improving the working efficiency and reducing the probability of connection errors.

Specifically, as shown in fig. 1 to 3, the first connecting terminal 21 is a straight bar, and the second connecting terminal 31 and the third connecting terminal 41 each have a bent portion 50, so that the ends of the first connecting terminal 21, the second connecting terminal 31 and the third connecting terminal 41, which are far away from the carrier board 10, are on the same straight line parallel to the extending direction of the first conductive bar 20. Accordingly, the corresponding terminals of the electrical appliance 200 are disposed on the same plane, so that the ends of the first connection terminal 21, the second connection terminal 31 and the third connection terminal 41, which are far away from the carrier board 10, can be simultaneously attached to the corresponding terminals of the electrical appliance 200 on the same straight line, and then locked by screws and electrically connected.

In the first embodiment of the present invention, the first conductive bar 20 and each first connection terminal 21 may be fixedly connected by a bolt 81 and a nut 82, the second conductive bar 30 and each second connection terminal 31 may be fixedly connected by a bolt 81 and a nut 82, and the third conductive bar 40 and each third connection terminal 41 may be fixedly connected by a bolt 81 and a nut 82. Alternatively, in the first embodiment of the present invention, the first conductive bar 20 and each first connection terminal 21 may be riveted, the second conductive bar 30 and each second connection terminal 31 may be riveted, and the third conductive bar 40 and each third connection terminal 41 may be riveted. Alternatively, the first conductive bar 20 and each of the first connection terminals 21 may be fixed by welding, the second conductive bar 30 and each of the second connection terminals 31 may be fixed by welding, and the third conductive bar 40 and each of the third connection terminals 41 may be fixed by welding. Still alternatively, the first conductive bar 20 and each of the first connection terminals 21 are integrally molded members; the second conductive bars 30 are integrally formed members with the respective second connection terminals 31; the third conductive bars 40 and the respective third connection terminals 41 are integrally formed, and preferably, the first conductive bars 20 and the respective first connection terminals 21 are cut and formed at a time by a punching process, the second conductive bars 30 and the respective second connection terminals 31 are cut and formed at a time by a punching process, and the third conductive bars 40 and the respective third connection terminals 41 are cut and formed at a time by a punching process.

In order to enable a worker to quickly attach and fix the carrier plate 10 to the side wall of the housing of the electrical appliance 200, both ends of the carrier plate 10 are bent toward the side where the first conductive bar 20 is located, so that both ends of the carrier plate 10 are used to be attached to the corresponding side wall of the housing of the electrical appliance 200. Thus, the two bent ends of the carrier plate 10 can be quickly attached to the side wall of the chassis and then locked by the fastening screws, so that the connection operation is convenient and quick. Alternatively, both ends of the carrier plate 10 are bent towards a side away from the first conductive bar 20, so that both ends of the carrier plate 10 are used for connecting to the corresponding side walls of the housing of the electrical appliance 200. Or, one end of the carrier plate 10 is bent toward the side where the first conductive bar 20 is located, and the other end of the carrier plate 10 is bent toward the side away from the first conductive bar 20, so that the two ends of the carrier plate 10 are used for being connected to the side walls of the housing of the corresponding electrical appliance 200.

In the first embodiment of the present invention, the carrier plate 10 may be a sheet metal part, or the carrier plate 10 may also be an insulating plate. And, both ends of the carrier plate 10 are fixedly connected to the corresponding case side walls of the electrical appliance 200 by screws.

Example two:

as shown in fig. 4 to fig. 6, schematic diagrams of a busbar structure 100 according to a second embodiment of the present invention are shown.

Compared with the embodiment of the present invention, the embodiment of the present invention provides a busbar structure 100, which has the following difference in the embodiment of the present invention.

In the busbar structure 100 according to the second embodiment, the first conductive bar 20, the second conductive bar 30, and the third conductive bar 40 are electrically connected to the output terminal 60, and the output terminal 60 extends along the direction opposite to the extending direction of the first connection terminal 21. Through setting up output terminal 60 to make things convenient for the user to connect, can make the staff conveniently, connect user end equipment and electrical apparatus 200 fast and accomplish.

The number of the output terminals 60 electrically connected to the first conductive bar 20, the number of the output terminals 60 electrically connected to the second conductive bar 30, and the number of the output terminals 60 electrically connected to the third conductive bar 40 are equal and are arranged in a one-to-one correspondence, and the output terminals 60 electrically connected to the first conductive bar 20, the output terminals 60 electrically connected to the second conductive bar 30, and the output terminals 60 electrically connected to the third conductive bar 40 are sequentially arranged in a staggered manner along the extending direction of the busbar structure 100.

With the utility model discloses embodiment one provides female structure 100 comparatively speaking, the utility model discloses embodiment two provides female structure 100 except that above structure is different, all the other structures are the same, therefore no longer describe here.

According to another aspect of the present invention, there is provided a frequency converter, as shown in fig. 7. Specifically, the frequency converter includes: a plurality of electric appliances 200 and the busbar structure 100 as described above. A plurality of electric appliances 200 are arranged side by side, and each electric appliance 200 is provided with a terminal group. Use the utility model provides a when female structure 100 of arranging is connected many electrical apparatus 200, female structure 100 of arranging is located same one side of many electrical apparatus 200 to, female a set of terminal group of arranging structure 100 and an electrical apparatus 200's wiring terminal group electric connection.

Specifically, as shown in fig. 7, the connection terminal group of each electrical appliance 200 includes a first phase electrical connection terminal 201, a second phase electrical connection terminal 202, and a third phase electrical connection terminal 203 (that is, each electrical appliance 200 is a three-phase electrical appliance), and three-phase electrical symbols corresponding to the first phase electrical connection terminal 201, the second phase electrical connection terminal 202, and the third phase electrical connection terminal 203 are defined as R, S, and T, respectively. Accordingly, the first connection terminal 21, the second connection terminal 31 and the third connection terminal 41 of the same terminal set are fixed to R, S and T by screws to achieve electrical connection.

Use the utility model provides a female row structure 100 exchanges between to many electrical apparatus 200 and connects, this female support plate 10 of arranging structure 100, first electrically conductive row 20, electrically conductive row 30 of second and the electrically conductive row 40 of third are interval arrangement in proper order, first electrically conductive row 20 is through first insulating support piece 71 fixed connection in support plate 10, electrically conductive row 30 of second is through second insulating support piece 72 fixed connection in first electrically conductive row 20, electrically conductive row 40 of third is through third insulating support piece 73 fixed connection in electrically conductive row 30 of second, thus make support plate 10, first electrically conductive row 20, electrically conductive row 30 of second and the electrically conductive row 40 assembly of third form into the integral type structure, the staff can wholly put this female row structure 100, and, through support plate 10 fixed connection on electrical apparatus 200, can be with whole female row structure 100 fixed mounting on electrical apparatus 200. In the busbar structure 100, since the number of the first connection terminals 21 electrically connected to the first conductive bars 20, the number of the second connection terminals 31 electrically connected to the second conductive bars 30, and the number of the third connection terminals 41 electrically connected to the third conductive bars 40 are equal and are arranged in a one-to-one correspondence, and one corresponding first connection terminal 21, one second connection terminal 31, and one third connection terminal 41 form a group of terminal groups for connecting one electrical appliance 200, when a worker connects the busbar structure 100 among a plurality of electrical appliances 200, the worker only needs to connect each group of terminal groups to the corresponding electrical appliance 200, and can conveniently and quickly complete the wiring installation work. Correspondingly, when the electrical apparatus 200 needs to be maintained, a worker disconnects each first connection terminal 21, each second connection terminal 31, and each third connection terminal 41 from the electrical apparatus 200, and then only needs to detach the carrier plate 10 from the electrical apparatus 200, the overall busbar structure 100 can be taken down, and the detachment work is very convenient. In addition, compare with the mode that adopts the cable to carry out ac connection between many electrical apparatus 200 among the prior art, adopt the utility model provides a female structure 100 of arranging carries out ac connection to many electrical apparatus 200, can make interconnecting link between electrical apparatus 200 and another electrical apparatus 200 succinct more, pleasing to the eye.

In the present application, 5 electrical appliances 200 are exemplified, as shown in fig. 7, the 5 electrical appliances 200 are arranged in a row, the left 3 electrical appliances 200 are ac-connected by using the busbar structure 100 of the first embodiment shown in fig. 1 to 3, that is, the busbar structure 100 of the first embodiment is provided with 3 sets of terminal sets, and the right 2 electrical appliances 200 are ac-connected by using the busbar structure 100 of the second embodiment shown in fig. 4 to 6. In addition, the left electrical apparatus 200 serving as a set of functional devices is connected to the right electrical apparatus 200 serving as another set of functional devices by direct current, so that, as shown in fig. 7, after the right electrical apparatus 200 is connected by using the busbar structure 100 according to the second embodiment, the right electrical apparatus 200 is connected to the user end through the output terminal 60, so that the user end device and the electrical apparatus 200 can be conveniently and quickly connected by the staff.

The above description is only for the purpose of illustrating the preferred embodiments of the present application and is not intended to limit the present application, and any modifications, equivalents and improvements made within the spirit and principle of the embodiments of the present application should be included in the scope of the present application.

Claims (10)

1. A busbar structure, comprising: the device comprises a carrier plate, a first conductive bar, a second conductive bar, a third conductive bar, a first insulating support piece, a second insulating support piece and a third insulating support piece which are sequentially arranged at intervals; the first conductive bar is fixedly connected to the carrier plate through the first insulating support piece, the second conductive bar is fixedly connected to the first conductive bar through the second insulating support piece, and the third conductive bar is fixedly connected to the second conductive bar through the third insulating support piece;

the first conductive bar is electrically connected with a plurality of first connecting terminals, and the first connecting terminals are arranged at intervals along the length direction of the first conductive bar; the second conductive bar is electrically connected with a plurality of second connecting terminals, and the second connecting terminals are arranged at intervals along the length direction of the second conductive bar; the third conductive bar is electrically connected with a plurality of third connecting terminals, and the third connecting terminals are arranged at intervals along the length direction of the third conductive bar; first connecting terminal the second connecting terminal with the quantity of third connecting terminal is equal and the one-to-one sets up, and, corresponding one first connecting terminal, one second connecting terminal and one third connecting terminal constitute a set of terminal group that is used for connecting an electrical apparatus, the support plate is used for fixed connection in on the electrical apparatus.

2. Busbar structure according to claim 1,

the first conductive bar is fixedly connected with each first connecting terminal, the second conductive bar is fixedly connected with each second connecting terminal, and the third conductive bar is fixedly connected with each third connecting terminal through bolts and nuts;

or the first conductive bar and each first connecting terminal, the second conductive bar and each second connecting terminal, and the third conductive bar and each third connecting terminal are riveted and fixed;

or the first conductive bar and each first connecting terminal, the second conductive bar and each second connecting terminal, and the third conductive bar and each third connecting terminal are welded and fixed;

or, the first conductive bar and each first connecting terminal are integrally formed members; the second conductive bar and each second connecting terminal are integrally formed components; the third conductive bar and each third connecting terminal are integrally formed members.

3. Busbar structure according to claim 2,

each of the first connection terminals, each of the second connection terminals, and each of the third connection terminals extend toward the same side with respect to the carrier board; in the same terminal group, the first connection terminal, the second connection terminal and the third connection terminal are sequentially arranged in a staggered manner along the extension direction of the busbar structure.

4. The busbar structure according to claim 3,

the first connecting terminal is in a straight strip shape, and the second connecting terminal and the third connecting terminal are provided with bent parts, so that the end parts of the first connecting terminal, the second connecting terminal and the third connecting terminal, which are far away from the carrier plate, are all on the same straight line parallel to the extending direction of the first conductive bar.

5. Busbar structure according to claim 4,

the first conductive bar, the second conductive bar and the third conductive bar are electrically connected with output terminals, and the output terminals extend along the reverse direction of the extending direction of the first connecting terminals.

6. Busbar structure according to claim 5,

with first electrically conductive row electric connection the output terminal, with second electrically conductive row electric connection the output terminal and with third electrically conductive row electric connection the quantity of output terminal is equal and the one-to-one sets up, and, follows on female extension direction of arranging the structure, with first electrically conductive row electric connection the output terminal, with second electrically conductive row electric connection the output terminal and with third electrically conductive row electric connection the output terminal staggers the setting each other in proper order.

7. Busbar structure according to any of claims 1 to 6,

two ends of the carrier plate are bent towards one side where the first conductive bar is located, so that two ends of the carrier plate are used for being connected to the corresponding side wall of the shell of the electric appliance;

or both ends of the carrier plate are bent towards one side departing from the first conductive bar, so that both ends of the carrier plate are used for being connected to the corresponding side wall of the shell of the electric appliance;

or one end of the carrier plate is bent towards one side where the first conductive bar is located, and the other end of the carrier plate is bent towards one side away from the first conductive bar, so that two ends of the carrier plate are used for being connected to the side wall of the shell corresponding to the electric appliance.

8. Busbar structure according to claim 7,

the carrier plate is a sheet metal part; or, the carrier plate is an insulating plate.

9. A frequency converter, comprising:

a plurality of electric appliances which are arranged side by side, and each electric appliance is provided with a wiring terminal group; and (c) a second step of,

the busbar structure according to any one of claims 1 to 8, wherein the busbar structure is located on the same side of a plurality of electrical appliances, and a group of terminals of the busbar structure is electrically connected with the wiring terminal group of one electrical appliance.

10. Frequency converter according to claim 9,

the connection terminal group of each electric appliance comprises a first phase electric connection terminal, a second phase electric connection terminal and a third phase electric connection terminal, and the first connection terminal, the second connection terminal and the third connection terminal of the same group of terminal groups are respectively electrically connected with the first phase electric connection terminal, the second phase electric connection terminal and the third phase electric connection terminal.

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