CN208738789U - A kind of stack bus bar that creepage distance is long - Google Patents

Abstract

The utility model discloses a kind of long stack bus bars of creepage distance, the stack bus bar includes the second busbar of the first busbar and two intervals on first busbar, copper post is equipped on two second busbars, the upper and lower surface of first busbar and the second busbar is equipped with insulating film, the insulating film of the second busbar upper and lower surface extends and is bonded to the midseptum between two second busbars, insulating film is set to form the suspending part being vacantly set to above first busbar in second busbar side, gap is equipped between the suspending part of two second busbar sides.The utility model structure effectively increases the creepage distance between two copper posts, enhances the performance of stack bus bar product, also has the characteristics that at low cost, structure is simple, easy to make.

Description

A kind of stack bus bar that creepage distance is long

Technical field

The utility model relates to the long stack bus bars in stack bus bar field more particularly to a kind of creepage distance.

Background technique

Stack bus bar, also known as composite bus bar, low-inductance bus are a kind of multi-layer compound structure connection rows, have repeatable electricity The high-power modular connection structure component of the features such as gas performance, Low ESR, anti-interference, good reliability, succinct assembly, is answered extensively For electric power and mixing traction, power switch system, electricity generation system, the power conversion module of electrical equipment etc.；Stack bus bar The size of creepage distance depends on the rated operational voltage of busbar, the environment (class of pollution) of work.

In stack bus bar practical application, rated operational voltage, busbar structure be laid out etc. due to, make bus bar the two poles of the earth it Between electric clearance and creepage distance it is insufficient, busbar causes to generate electric discharge between the two poles of the earth when working；It needs to increase in order to solve the above problem Add the creepage distance between the two poles of the earth, conventional increase creepage distance mode, which has, the methods of to be increased insulation spacer, adds groove, is By increasing an insulation foreign matter around terminal, achieve the purpose that extend insulator surface creepage distance；This method to produce Structure is complicated for product, and process is loaded down with trivial details, at high cost, and increased insulation spacer have fall off, the bonding that insulate poor sealing, it is dry when installation The problems such as relate to.

Utility model content

The utility model is directed to above-mentioned existing technological deficiency, provides a kind of stack bus bar that creepage distance is long, the structure Effectively increase the creepage distance between two copper posts, enhance the performance of stack bus bar product, also have at low cost, structure it is simple, Feature easy to make.

In order to solve the above-mentioned technical problem, the utility model provides a kind of stack bus bar that creepage distance is long, described folded Layer busbar includes the first busbar and two intervals are set to the second busbars on first busbar, on two second busbars It is equipped with copper post, the upper and lower surface of first busbar and the second busbar is equipped with insulating film, the second busbar upper and lower surface Insulating film extend and be bonded to the midseptum between two second busbars, make insulating film in second busbar side While the suspending part being vacantly set to above first busbar is formed, between being equipped between the suspending part of two second busbar sides Gap.

Preferably, the hanging part is in the centre of the second busbar thickness.

Preferably, the through-hole through the two is equipped on second busbar and the first busbar, the copper post is fixed on institute State in through-hole and protrude from the insulating film of second busbar upper surface.

Preferably, the blind hole of both connections is equipped on second busbar and the first busbar, the blind hole is by described the The upper surface of two busbars extends downward into the first busbar, and the bottom of the blind hole is located in the first busbar, and the copper post is fixed In in blind hole and protruding from the insulating film of the second busbar upper surface.

Preferably, the insulating film is PET film.

The utility model has the following beneficial effects:

The utility model is by being vacantly set to first after the insulating film of the second busbar upper and lower surface is extended outwardly and is bonded The space gully with height fall is formed above busbar, is respectively formed the suspending part top and bottom in two the second busbar opposite sides Power path is climbed between two copper posts, effectively increases the creepage distance between two copper posts (electrode), enhance stack bus bar product can By property and performance；The utility model structure can also effectively improve the production efficiency of stack bus bar, save cost, and operate letter Just, versatility is high, while having beautified stack bus bar product appearance, substantially increases the quality of product.

Detailed description of the invention

Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application, It does not constitute improper limits to the present invention, in the accompanying drawings:

Fig. 1 is the schematic diagram of stack bus bar in embodiment 1；

Fig. 2 is the schematic diagram of the creepage distance in Examples 1 and 2 between two copper posts；

Fig. 3 is the schematic diagram of stack bus bar in embodiment 2.

Specific embodiment

In order to more fully understand the technology contents of the utility model, below in conjunction with attached drawing and specific embodiment to this Utility model is described further and illustrates.

Embodiment 1

As shown in Figure 1, a kind of stack bus bar that creepage distance is long, stack bus bar shown in the present embodiment include the first busbar 1 and two intervals be set to the second busbars 2 on the first busbar 1, the first busbar 1 of connection and the are equipped on two the second busbars The copper post 3 of two busbars 2, two copper posts 3 are used as two electrodes, and the upper and lower surface of the first busbar 1 and the second busbar 2 is equipped with Insulating film 4, so that the first busbar 1 and the second busbar 2 are kept apart simultaneously mutually insulated, the two is connected to by copper post 3, the second busbar The insulating film of 2 upper and lower surfaces extends and fits together to the midseptum between two the second busbars 2, and insulating film 4 is made to exist The opposite sides side of two the second busbars is respectively formed the hanging suspending part 41 set on 1 top of the first busbar, two 2 sides of the second busbar Gap is equipped between the suspending part on side；In above structure, as shown in Fig. 2, 5 part of dotted line therein between two copper posts climb electricity away from From because two suspending parts are vacantly set to above the first busbar and are not contacted, in the case where there is no the suspending part, between two copper posts Creepage distance be linear distance along the second busbar and the first busbar surface, in the present embodiment, after more two suspending parts, Creepage distance increases the distance of two suspending part upper and lower surfaces on the basis of original, and two copper posts (electricity is greatly improved Pole) between creepage distance, while ensure that the reliability and electric property of product.

Specifically, the horizontal position of suspending part 41 is located at the centre of 2 thickness of the second busbar, beautify outside stack bus bar product It sees, substantially increases the quality of product.

Specifically, being equipped with the through-hole 6 through the two on the second busbar 2 and the first busbar 1, copper post 3 is fixed in through-hole 6 And protrude from the insulating film of the second busbar upper surface.

Embodiment 2

As shown in figure 3, a kind of stack bus bar that creepage distance is long, stack bus bar shown in the present embodiment include the first busbar 1 and two intervals be set to the second busbars 2 on the first busbar 1, the first busbar 1 of connection and the are equipped on two the second busbars The copper post 3 of two busbars 2, two copper posts 3 are used as two electrodes, and the upper and lower surface of the first busbar 1 and the second busbar 2 is equipped with Insulating film 4, so that the first busbar 1 and the second busbar 2 are kept apart simultaneously mutually insulated, the two is connected to by copper post 3, the second busbar The insulating film of 2 upper and lower surfaces extends and fits together to the midseptum between two the second busbars 2, and insulating film 4 is made to exist The opposite sides side of two the second busbars is respectively formed the hanging suspending part 41 set on 1 top of the first busbar, two 2 sides of the second busbar Gap is equipped between the suspending part on side；In above structure, as shown in Fig. 2, 5 part of dotted line therein between two copper posts climb electricity away from From because two suspending parts are vacantly set to above the first busbar and are not contacted, in the case where there is no the suspending part, between two copper posts Creepage distance be linear distance along the second busbar and the first busbar surface, in the present embodiment, after more two suspending parts, Creepage distance increases the distance of two suspending part upper and lower surfaces on the basis of original, and two copper posts (electricity is greatly improved Pole) between creepage distance, while ensure that the reliability and electric property of product.

Specifically, the horizontal position of suspending part 41 is located at the centre of 2 thickness of the second busbar, beautify outside stack bus bar product It sees, substantially increases the quality of product.

Specifically, the second busbar 2 on the first busbar 1 be equipped be connected to the two blind hole 7, blind hole 7 is by the second busbar Upper surface extends downward into the first busbar, and the bottom of blind hole is located at the middle of thickness in the first busbar, and copper post is fixed on blind In hole and protrude from the insulating film of the second busbar upper surface.

In above-described embodiment 1 and 2, the manufacturing process of stack bus bar is as follows: first the first busbar and the second busbar up and down Surface bonding insulating film, and be bonded in a side of the second busbar by insulating film and form suspending part, then by the first busbar and It is hot pressed into stack bus bar after two busbars contraposition overlapping, and the suspending part on two the second busbars is spaced setting in opposite directions, then by copper Column is fixed in the corresponding through-hole constituted of the two or blind hole.

In the other embodiments of the utility model, the first busbar and the second busbar are made of T2 red copper；Insulating film is PET film (PET-Polyethylene terephthalate, polyethylene terephthalate, by dimethyl terephthalate (DMT) and second two Alcohol transesterification first synthesizes bishydroxyethyl terephthalate with terephthalic acid (TPA) and ethylene glycol esterification, then carries out polycondensation reaction again It is made；Belong to crystal type saturated polyester, is milky or light yellow, highly crystalline polymer, smooth surface is glossy；Wider Within the temperature range of have excellent physical mechanical property, for long-term use temperature up to 120 DEG C, electrical insulating property is excellent, in addition Under high-temperature high-frequency, electrical property is still preferable, but corona resistance is poor, creep resistance, fatigue durability, rub resistance, dimensionally stable Property is all fine).

In the other embodiments of the utility model, in the case where meeting electrical performance demands, it should maximally reduce Clearance distance between two suspending parts, to reach maximized creepage distance.

Technical solution provided by the utility model embodiment is described in detail above, it is used herein specifically A example is expounded the principle and embodiment of the utility model embodiment, and the explanation of above embodiments is only applicable to help Assistant solves the principle of the utility model embodiment；At the same time, for those skilled in the art is implemented according to the utility model Example, there will be changes in terms of specific embodiments and scope of application, in conclusion the content of the present specification should not be construed as Limitations of the present invention.

Claims (5)

1. a kind of long stack bus bar of creepage distance, which is characterized in that the stack bus bar includes between the first busbar and two It is equipped with copper post every the second busbar being set on first busbar, on two second busbars, first busbar and the The upper and lower surface of two busbars is equipped with insulating film, and the insulating film of the second busbar upper and lower surface is to two second busbars Between midseptum extend and be bonded, make insulating film second busbar side formed vacantly be set to first busbar on The suspending part of side is equipped with gap between the suspending part of two second busbar sides.

2. the long stack bus bar of creepage distance according to claim 1, which is characterized in that the hanging part is in described the The centre of two busbar thickness.

3. the long stack bus bar of creepage distance according to claim 2, which is characterized in that in second busbar and first Busbar is equipped with the through-hole through the two, and the copper post is fixed in the through-hole and protrudes from second busbar upper surface Insulating film.

4. the long stack bus bar of creepage distance according to claim 2, which is characterized in that in second busbar and first Busbar is equipped with the blind hole of both connections, and the blind hole is extended downward into the first busbar by the upper surface of second busbar, The bottom of the blind hole is located in the first busbar, and the copper post is fixed in blind hole and protrudes from the insulation of the second busbar upper surface Film.

5. the long stack bus bar of creepage distance according to claim 1-4, which is characterized in that the insulating film is PET film.