CN215266580U - Battery distribution integrated system busbar coupling assembling and electric automobile - Google Patents

Abstract

The utility model provides a battery distribution integrated system busbar coupling assembling and electric automobile, through setting up the conductive bush and with the via hole tight fit connection on the busbar, when appearing that the bolt locking force diminishes, the conductive bush still can guarantee the stable electric connection between the upper and lower busbar, therefore current-carrying capacity is stable, reliable; aiming at the situation of arranging the upper and lower layers of bus bars, the utility model can show the advantages of stable and reliable current-carrying capacity; the upper end face and the lower end face of the conductive lining are positioned in the upper end face and the lower end face of the laminated bus bar, so that the situation that the bus bar cannot be locked by the bolt due to overlarge resistance generated by the conductive lining in the bolt installation direction is avoided; the utility model discloses be particularly useful for this kind of device that requires harsher and need too big electric current on its inside busbar to the vibration condition of electric automobile.

Description

Battery distribution integrated system busbar coupling assembling and electric automobile

Technical Field

The utility model relates to a battery distribution integrated system technical field especially relates to a battery distribution integrated system busbar coupling assembling and electric automobile.

Background

With the continuous development of new energy markets, related products such as electric vehicles and the like gradually begin to be popularized, and a battery distribution integrated system (BDU) is also continuously developed as a standard configuration component of the new energy related products. The main structure of the BDU concerned so far is composed of a housing, a base, electric components, and conductors for connection such as bus bars and the like.

The bus bar has a main function in the BDU to connect various electrical components such as fuses, contactors, and the like, and to external connection terminals (such as a quick charge positive terminal, a quick charge negative terminal, a battery positive terminal, a battery negative terminal, and the like), and is required to carry a prescribed large current during the operation of the BDU.

As higher currents and smaller spaces are generally required to be carried, the use of bus bars as conductors for the connection can meet such requirements. Since the electrical components are electrically connected according to the circuit design, the bus bars need to be electrically connected to each other, and accordingly, a connector for connecting the bus bars is provided.

At present, the joint of connecting the busbar is mostly fixed through the screw, the simple easy operation of screwed connection, but the bolt locking force that the product appears in actual use because the vibration causes descends, or when the installation because the busbar installation twists reverse the problem that causes the locking force of joint department to descend, this resistance grow that can cause the joint department of busbar, make the busbar bear the weight of when the specified heavy current, the temperature rise grow of busbar and joint department, the temperature rise that probably appears unusual grow even causes BDU to fire the burning, the new energy product of carrying BDU also can fire the burning thereupon like electric automobile.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a battery distribution integrated system busbar coupling assembling and electric automobile can effectively avoid the unstable problem of electric connection that the locking force decline of the joint department of busbar leads to.

The technical scheme of the utility model is realized like this:

on the one hand, the utility model provides a battery distribution integrated system bus bar coupling assembling, it includes upper cover, base, bolt, nut, a plurality of busbar and electric elements, wherein, the upper cover lid is established on the base and is formed between the two and hold the cavity, and electric elements fixes hold inside the cavity, busbar and electric elements electric connection, part busbar crisscross from top to bottom and electric connection, seted up the via hole on crisscross and electric connection's the busbar from top to bottom respectively, the bolt pass from top to bottom crisscross and electric connection's the busbar on the via hole and with nut threaded connection, still include the electrically conductive bush, the electrically conductive bush sets up in the downthehole and be connected with its tight fit of crossing on each busbar crisscross from top to bottom and electric connection, the bolt passes from the middle of the electrically conductive bush.

On the basis of the above technical solution, preferably, the conductive bushing is made of pure copper or copper alloy.

On the basis of the technical scheme, preferably, a nut is fixed on the base opposite to the through hole.

On the basis of the above technical solution, preferably, the number of the bus bars in each group which are staggered up and down and electrically connected is two or more.

Further preferably, the top end surface of the conductive bush is located below the upper surface of the bus bar in the uppermost layer, and the bottom end surface of the conductive bush is located above the lower surface of the bus bar in the lowermost layer.

Further preferably, the bolt and nut portion abuts against an upper surface of the bus bar located in the uppermost layer, and the nut abuts against a lower surface of the bus bar located in the lowermost layer.

Still more preferably, the nut portion is embedded in the base.

On the basis of the above technical solution, preferably, the conductive bushing has an annular structure.

In a second aspect, the present invention provides an electric vehicle, including the first aspect of the present invention, a battery distribution integrated system bus bar connection assembly.

The utility model discloses a battery distribution integrated system busbar coupling assembling and electric automobile have following beneficial effect for prior art:

(1) by arranging the conductive bushing and connecting the conductive bushing with the through hole on the bus bar in a tight fit manner, when the locking force of the bolt is reduced, the conductive bushing can still ensure stable electrical connection between the upper bus bar and the lower bus bar, so that the current carrying capacity is stable and reliable;

(2) aiming at the situation of arranging the upper and lower layers of bus bars, the utility model can show the advantages of stable and reliable current-carrying capacity;

(3) the upper end face and the lower end face of the conductive lining are positioned in the upper end face and the lower end face of the laminated bus bar, so that the situation that the bus bar cannot be locked by the bolt due to overlarge resistance generated by the conductive lining in the bolt installation direction is avoided;

(4) the utility model discloses be particularly useful for this kind of device that requires harsher and need too big electric current on its inside busbar to the vibration condition of electric automobile.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of a battery distribution integration system of the present invention;

fig. 2 is a perspective view of the battery distribution integration system with the upper cover removed;

fig. 3 is a perspective view of the bus bar connection assembly of the battery distribution integration system of the present invention;

fig. 4 is an exploded view of the battery distribution integration system bus bar connection assembly of the present invention;

fig. 5 is a front cross-sectional view of the battery distribution integrated system bus bar connection assembly of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

As shown in fig. 1-5, the utility model discloses a battery distribution integrated system busbar coupling assembling, it includes upper cover 1, base 2, bolt 3, nut 4, a plurality of busbar 5, electrical component (not marked in the figure) and conductive bush 6.

The upper cover 1 covers the base 2, an accommodating cavity is formed between the upper cover and the base, and the electric element is fixed in the accommodating cavity. Specifically, the upper cover 1 and the base 2 are generally made of a non-conductive material, or made of a metal material and subjected to an insulation treatment on the surfaces.

The bus bar 5 is electrically connected to the electric element. Specifically, two ends of the bus bar 5 may be respectively provided with a connection hole for electrically connecting with an electrical component.

The bus bars 5 are provided in many, but only some need to be electrically connected. For such bus bars 5, the bus bars 5 are vertically staggered and electrically connected, and the vertically staggered and electrically connected bus bars 5 are respectively provided with via holes 50 for electrical connection with each other. It should be noted that two bus bars 5 are generally disposed in each group, and three or more bus bars may be disposed in special cases.

Specifically, as a way of achieving the electrical connection of the bus bars 5, the bolts 3 pass through the through holes 50 on the bus bars 5 which are staggered up and down and electrically connected and are screwed with the nuts 4. Specifically, the nut portion of the bolt 3 abuts against the upper surface of the bus bar 5 located at the uppermost layer, and the nut 4 abuts against the lower surface of the bus bar 5 located at the lowermost layer.

The junction of the bus bar 5 may be suspended, and it is preferable to fix it to the base 2 for stability. Therefore, as a preferred embodiment, the nut 4 is fixed on the base 2 opposite to the through hole 50.

Above busbar 5 electric connection's mode is prior art, and it has the background art part the problem, as the improvement, the utility model discloses a conductive bush 6, conductive bush 6 sets up in the via hole 50 on crisscross each busbar 5 of electric connection from top to bottom and is connected with it tight fit, and bolt 3 passes in the middle of from conductive bush 6. Specifically, the outer diameter of the conductive bushing 6 is not less than the inner diameter of the through hole 50, so as to ensure that the conductive bushing 6 is tightly fitted with the bus bars after being installed in place to electrically conduct the bus bars 5 with each other, and thus, when the subsequent bolt locking force is reduced, the stable electrical connection between the upper and lower bus bars 5 can still be ensured. In particular, the conductive lining 6 is preferably made of a material with high conductivity, such as pure copper or a copper alloy. Specifically, the conductive bushing 6 has an annular structure.

As a preferred embodiment, the top end surface of the conductive bush 6 is located below the upper surface of the bus bar 5 in the uppermost layer, and the bottom end surface of the conductive bush 6 is located above the lower surface of the bus bar 5 in the lowermost layer, so as to avoid the situation that the conductive bush 6 generates too much resistance in the installation direction of the bolt 3, so that the bolt 3 cannot lock the bus bar 5.

The utility model discloses a battery distribution integrated system busbar coupling assembling is particularly useful for this kind of device that requires harsher and need too big electric current on its inside busbar to the vibration condition of electric automobile.

The following simple introduction the working principle of the utility model:

when the problem that the locking force of a bolt is reduced due to vibration or the locking force at a joint is reduced due to torsion during installation of a bus bar occurs in the actual use process of a product, the conductive bushing 6 is tightly matched and connected with the through hole 50, so that the electrical contact between the upper bus bar 5 and the lower bus bar 5 can be still ensured, and the stable current carrying capacity of the conductive bushing can be maintained.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a battery distribution integrated system busbar coupling assembling, its includes upper cover (1), base (2), bolt (3), nut (4), a plurality of busbar (5) and electric elements, wherein, upper cover (1) lid is established on base (2) and is formed between the two and hold the cavity, and electric elements fixes hold inside the cavity, busbar (5) and electric elements electric connection, part busbar (5) crisscross and electric connection from top to bottom, seted up via hole (50) on crisscross and electric connection's busbar (5) from top to bottom respectively, bolt (3) pass via hole (50) on crisscross and electric connection's busbar (5) from top to bottom and with nut (4) threaded connection, its characterized in that: the bus bar structure is characterized by further comprising a conductive bushing (6), the conductive bushing (6) is arranged in the through holes (50) on the bus bars (5) which are staggered up and down and electrically connected and is in tight fit connection with the through holes, and the bolts (3) penetrate through the middle of the conductive bushing (6).

2. The battery distribution integration system bus bar connection assembly of claim 1, wherein: a nut (4) is fixed on the base (2) opposite to the via hole (50).

3. The battery distribution integration system bus bar connection assembly of claim 1, wherein: the conductive lining (6) is made of pure copper or copper alloy materials.

4. The battery distribution integration system bus bar connection assembly of claim 1, wherein: the number of the bus bars (5) which are staggered up and down and electrically connected in each group is two or more.

5. The battery distribution integration system bus bar connection assembly of claim 4, wherein: the top end face of the conductive bush (6) is located below the upper surface of the bus bar (5) on the uppermost layer, and the bottom end face of the conductive bush (6) is located above the lower surface of the bus bar (5) on the lowermost layer.

6. The battery distribution integration system bus bar connection assembly of claim 4, wherein: the nut part of the bolt (3) is propped against the upper surface of the bus bar (5) positioned on the uppermost layer, and the nut (4) is propped against the lower surface of the bus bar (5) positioned on the lowermost layer.

7. The battery distribution integration system bus bar connection assembly of claim 6, wherein: the nut (4) is partially embedded in the base (2).

8. The battery distribution integration system bus bar connection assembly of claim 1, wherein: the conductive bushing (6) is of an annular structure.

9. An electric vehicle, characterized in that: a battery distribution integration system bus bar connection assembly including any one of claims 1-8.

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