CN202026061U

CN202026061U - Laminated busbar for increasing creepage distance

Info

Publication number: CN202026061U
Application number: CN2011201154494U
Authority: CN
Inventors: 洪英杰
Original assignee: SHANGHAI EAGTOP ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: Shanghai Eagle Peak Polytron Technologies Inc
Priority date: 2011-04-19
Filing date: 2011-04-19
Publication date: 2011-11-02
Anticipated expiration: 2021-04-19

Abstract

The utility model discloses a laminated busbar for increasing creepage distance, comprising an anode conductor and a cathode conductor, wherein an insulating film is arranged between the anode conductor and the cathode conductor; and an insulating bar is arranged at the overlapped section of the anode conductor and the cathode conductor, with the insulating bar being wrapped inside the insulating film. The laminated busbar disclosed in the utility model, with the insulating bar wrapped inside the insulating film, has most part thereof wrapped by insulating material except for the electrical connection section which is exposed, thereby effectively increasing the creepage distance.

Description

A kind of laminated bus bars that increases creepage distance

Technical field

The utility model relates to a kind of bus tandem row, relates in particular to a kind of laminated bus bars that increases creepage distance, is applied to rectification, the inversion system of power electronics industry.

Background technology

Because the rise of new forms of energy in recent years, to the raising that the electric property of equipment, unfailing performance require, in rectification, inversion system, traditional copper bar connects can not satisfy its requirement.Laminated bus claims composite bus bar again, English is Laminated Busbar, be that a kind of multi-layer compound structure connects row, have the high-power modular syndeton parts that can repeat the succinct characteristics such as quick of electric property, Low ESR, anti-interference, good reliability, saving space, assembling.Laminated bus can be the highway of distribution system.Compare with traditional, heavy, time-consuming wiring method, use composite bus bar that distribution system modern, that be easy to design and install quick and clear in structure can be provided with trouble.

At present, composite bus bar is widely used in electric power and mixes the power conversion module etc. of traction, electric traction equipment, cellular based communication, base station, telephone switching system, catenet equipment, big-and-middle-sized computer, power switch system, welding system, military equipment system, electricity generation system, electrical equipment.Existing laminated bus increases the creepage distance structure as shown in Figure 1, be distributed with anodal conductor 1 and cathode conductor 2 in the composite bus bar, paste the rectangular insulation strip 3 of key material on dielectric film 5 surfaces, having increased the creepage distance line 6 between anodal conductor 1 and the cathode conductor 2, but following shortcoming is arranged: increase one procedure; Increase a kind of material: UV glue; Increase a servicing unit: shading eyeglasses; Increase workman's operation easier, size can depart from when pasting because of carelessness.Therefore be necessary existing laminated bus bars structure is improved, design the improvement scheme that effective and convenient operation increases creepage distance.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of laminated bus that increases creepage distance, can effectively increase creepage distance, and simple in structure, does not increase production cost.

The utility model is to solve the problems of the technologies described above the technical scheme that adopts to provide a kind of laminated bus that increases creepage distance, comprise anodal conductor and cathode conductor, be provided with dielectric film between described anodal conductor and the cathode conductor, described anodal conductor and cathode conductor overlapping place are provided with insulation strip, wherein, described insulation strip is coated in the dielectric film.

The laminated bus bars of above-mentioned increase creepage distance, wherein, the height of described insulation strip is no more than 2mm.

The laminated bus bars of above-mentioned increase creepage distance, wherein, described insulation strip be shaped as circle or waist shape.

The utility model contrast prior art has following beneficial effect: the laminated bus bars of the increase creepage distance that the utility model provides, by insulation strip is coated in the dielectric film, making the laminated bus major part be insulated material coats, have only electric connecting member exposed, thereby effectively increase creepage distance.

Description of drawings

Figure Be the existing laminated bus schematic diagram that increases creepage distance;

Fig. 2 is the cutaway view along A-A line among Fig. 1;

Fig. 3 increases the laminated bus schematic diagram of creepage distance for the utility model;

Fig. 4 is the cutaway view along B-B line among Fig. 3.

Among the figure:

1 anodal conductor 2 cathode conductor 3 insulation strip

4 creepage distance lines, 5 dielectric films

Embodiment

The utility model will be further described below in conjunction with drawings and Examples.

Figure

Increase the laminated bus bars schematic diagram of creepage distance for the utility model.

See also Fig. 2, the conductor of opposed polarities such as anodal conductor 1 and cathode conductor 2 is provided in the laminated bus of the novel increase creepage distance that provides, realize insulation function with dielectric film 5 between the different conductor layer, 2 of described anodal conductor 1 and cathode conductor are provided with insulation strip 3, wherein, described insulation strip 3 is covered by in the dielectric film 5, thereby forms creepage distance line 4.Described insulation strip 3 preferred function material FR-4 epoxy plates, shape is circle or waist shape.The height of described insulation strip 3 generally is no more than 2mm, and promptly insulation strip is no more than 2mm than the height of outermost layer conductor plate the raised area.

The laminated bus edge sealing of the increase creepage distance that the utility model provides, can satisfied be less than standard to creepage distance on the basis of normal structural design has only on the laminated bus of 5-8mm, this product is because mentality of designing has been done adjustment, under the situation that has increased creepage distance, the same on the subsequent production with normal product (little creepage), can not increase any operation, man-hour etc.

The laminated bus of above-mentioned increase creepage distance can be used for high voltage, high pollution grade, high height above sea level, army's mark etc. under the demanding situation of creepage distance.For components and parts such as electric capacity, IGBT, the creepage distance of itself guarantees by fluted design between the two poles of the earth, and the laminated bus product is the sheet material stack-design that approaches, so cannot design groove, have only toward protruding design concept and carry out, consider processing and property simple to operate, the part that can protrude the increase creepage distance during design is coated on together and goes in the busbar is the most rational, but this design is determined by the ductility of dielectric film, and it is the most rational that the part that generally protrudes is no more than 2mm.

Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; any those skilled in the art; in not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection range of the present utility model is worked as with being as the criterion that claims were defined.

Claims

1. laminated bus that increases creepage distance, comprise anodal conductor (1) and cathode conductor (2), be provided with dielectric film (5) between described anodal conductor (1) and the cathode conductor (2), described anodal conductor (1) and cathode conductor (2) overlapping place are provided with insulation strip (3), it is characterized in that described insulation strip (3) is coated in the dielectric film (5).

2. the laminated bus of increase creepage distance as claimed in claim 1 is characterized in that, the height of described insulation strip (3) is no more than 2mm.

3. the laminated bus of increase creepage distance as claimed in claim 1 or 2 is characterized in that, described insulation strip (3) be shaped as circle or waist shape.