CN220821991U - Copper bar connecting structure of electric four-wheel drive system and vehicle - Google Patents

Abstract

The utility model provides a copper bar connecting structure of an electric four-wheel drive system and a vehicle, and the copper bar connecting structure of the electric four-wheel drive system comprises a plurality of copper bars arranged side by side and connecting pieces connected to the copper bars respectively, wherein high-voltage sockets are arranged at two ends of each copper bar respectively, each copper bar is provided with a connecting section, the connecting sections on the adjacent copper bars are oppositely arranged, a preset gap is arranged between the oppositely arranged adjacent connecting sections, one end of each connecting piece is connected to the connecting section on the corresponding copper bar, and the other end of each connecting piece forms a connecting end connected with a BDU. According to the copper bar connecting structure of the electric four-wheel drive system, the high-voltage sockets arranged at the two ends of the copper bar are connected with the BDU through the connecting pieces, so that the two high-voltage sockets are connected to the BDU through the common copper bar, the number of interfaces is reduced, the length of the copper bar is reduced, the high-voltage sockets are connected with the BDU conveniently, and the practicability of the electric four-wheel drive system is improved.

Description

Copper bar connecting structure of electric four-wheel drive system and vehicle

Technical Field

The utility model relates to the technical field of electric four-wheel drive systems, in particular to a copper bar connecting structure of an electric four-wheel drive system. The utility model also relates to a vehicle with the copper bar connecting structure of the electric four-wheel drive system.

Background

In the field of electric automobiles, with the continuous improvement of performance requirements, a power driving system is gradually changed into a four-wheel drive scheme. In the existing electric four-wheel drive system, usually, a front wheel drive motor and a rear wheel drive motor are respectively connected with a BDU (Battery energy Distribution Unit, a battery energy distribution unit) through a front high-voltage interface and a rear high-voltage interface, and the two high-voltage interfaces are respectively and independently connected to a plurality of power supply interfaces on the BDU through independent copper bars.

However, the front and rear high-voltage interfaces are connected with the BDU power supply interfaces through copper bars which are independent of each other, at least two groups of power supply interfaces are generally required to be provided by the BDU, and the two high-voltage interfaces are respectively connected with the two groups of power supply interfaces, so that the copper bars are inconvenient to connect with the BDU and the length of the copper bars is too long, and the practicability of the electric four-wheel drive system is affected.

Disclosure of utility model

In view of the above, the present utility model is directed to a copper bar connection structure of an electric four-wheel drive system, so as to facilitate improvement of practicability of the electric four-wheel drive system.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

The copper bar connecting structure of the electric four-wheel drive system comprises a plurality of copper bars arranged side by side and connecting pieces respectively connected to the copper bars; the two ends of each copper bar are respectively provided with a high-voltage socket, each copper bar is provided with a connecting section, the connecting sections on adjacent copper bars are oppositely arranged, and a preset gap is arranged between the adjacent connecting sections which are oppositely arranged;

One end of each connecting piece is connected to the corresponding connecting section on the copper bar, and the other end of each connecting piece forms a connecting end connected with the BDU.

Further, the connecting section is provided with a switching row, the connecting piece is connected to the connecting section through the switching row, and the adjacent switching on the connecting section is arranged in a staggered mode.

Further, the connecting section is provided with a fixed support, the fixed support and the switching row on the adjacent connecting section are arranged in one-to-one correspondence, and the switching row on the adjacent connecting section is connected to the connecting section through the fixed support.

Further, the switching row is connected with the connecting piece in a threaded manner, and the fixing support is provided with an insert nut for the switching row to be connected with the connecting piece in a threaded manner.

Further, the fixed support comprises a first clamping groove and a fixed groove, and the insert nut is positioned in the fixed groove; the first clamping groove is used for clamping the fixed support to the adjacent connecting section, and the fixed groove is used for fixing the switching row and the connecting section to the fixed support.

Further, the connecting piece comprises a conductive clamp spring provided with a second clamping groove, and the connecting section is clamped on the conductive clamp spring through the second clamping groove.

Further, a third clamping groove is formed in the connecting end, and the conductive clamp spring is connected to the BDU through the third clamping groove.

Further, the conductive clamp spring comprises a plurality of reeds which are stacked together, each reed is provided with a clamping port, and the clamping ports on each reed form the second clamping groove and the third clamping groove together.

Further, the conductive clamp spring is H-shaped, and the second clamping groove and the third clamping groove are respectively arranged at two ends of the conductive clamp spring.

Compared with the prior art, the utility model has the following advantages:

According to the copper bar connecting structure of the electric four-wheel drive system, the high-voltage sockets arranged at the two ends of the copper bar are connected with the BDU through the connecting pieces, so that the two high-voltage sockets are connected to the BDU through the common copper bar, the number of interfaces of the BDU is reduced, the length of the copper bar is shortened, the high-voltage sockets are connected with the BDU conveniently, and the practicability of the electric four-wheel drive system is improved.

In addition, the transfer rows on the adjacent connecting sections are arranged in a staggered mode, interference between the adjacent transfer rows is avoided, and the connecting piece can be connected with the connecting sections conveniently. Through setting up the fixed bolster, be favorable to guaranteeing the clearance of predetermineeing between the adjacent linkage segment, be favorable to guaranteeing simultaneously that switching row and linkage segment connection structure are stable.

Secondly, through setting up inserts nut, be favorable to making the connecting piece more stable and firm with the connection of switching row and fixed bolster, be convenient for simultaneously the connecting piece is connected with the switching row. Through setting up first joint groove and fixed slot, be favorable to making the connection between fixed bolster, the switching row and the linkage segment more stable, still be convenient for assembly and maintenance simultaneously.

In addition, the conductive clamp spring and the second clamping groove are arranged to facilitate the connecting section to be clamped on the conductive clamp spring more accurately and conveniently, so that the connecting efficiency of the connecting section and the connecting piece is improved. The third clamping groove is arranged to facilitate the conductive clamp spring to be connected to the BDU quickly and stably.

In addition, the design of the multiple reeds of the conductive clamp spring and the arrangement of the clamping interface are beneficial to improving the structural strength of the conductive clamp spring, and meanwhile, the quantity of reeds in the conductive clamp spring can be conveniently and flexibly adjusted so as to adapt to transmission currents with different sizes. The adoption is the electrically conductive jump ring of H shape design, makes second joint groove and second joint groove be located electrically conductive jump ring both ends respectively, can be convenient for electrically conductive jump ring be connected with linkage segment and BDU respectively.

Another object of the present utility model is to provide a vehicle, on which an electric four-wheel drive system is provided, and a copper bar connection structure of the electric four-wheel drive system as described above.

The vehicle has the same beneficial effects as the copper bar connecting structure of the electric four-wheel drive system in the prior art, and is not repeated here.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic structural diagram of a copper bar connection structure according to an embodiment of the present utility model;

Fig. 2 is a schematic structural diagram of a copper bar and a transfer bar according to an embodiment of the present utility model;

Fig. 3 is a schematic structural diagram of a copper bar connection structure without BDU according to an embodiment of the present utility model;

FIG. 4 is an enlarged view of FIG. 3 at A;

FIG. 5 is a schematic view of a mounting bracket according to an embodiment of the present utility model;

Fig. 6 is a schematic structural diagram of another embodiment of a copper bar connection structure according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a copper bar connection structure without a BDU according to an embodiment of the present utility model;

FIG. 8 is an enlarged view at B in FIG. 7;

Fig. 9 is a schematic structural view of another view of a copper bar connection structure according to an embodiment of the present utility model;

fig. 10 is an enlarged view of fig. 9 at C;

FIG. 11 is a schematic diagram of a BDU and a conductive clip according to an embodiment of the utility model

FIG. 12 is a front view of a BDU and a conductive clip according to an embodiment of the utility model

Fig. 13 is a schematic structural diagram of a conductive clip spring according to an embodiment of the present utility model;

fig. 14 is a schematic structural view of a reed according to an embodiment of the present utility model.

Reference numerals illustrate:

1. A copper bar; 11. a connection section; 2. a connecting piece; 21. a connection end; 3. a transfer row; 4. a fixed support; 41. a first clamping groove; 42. a fixing groove; 43. an insert nut; 5. conductive clamp springs; 51. a second clamping groove; 52. a third clamping groove; 53. a reed; 531. a card interface; 6. a high voltage outlet; 7. BDU; 71. a clamp spring mounting groove; 8. and (5) a bolt.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that, if terms indicating an orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. are presented, they are based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, if any, are also used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, in the description of the present utility model, the terms "mounted," "connected," and "connected" are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

The present embodiment relates to a copper bar connection structure (hereinafter referred to as copper bar connection structure), which is shown in fig. 1 to 5, and includes a plurality of copper bars 1 arranged side by side and connection members 2 connected to the copper bars 1, respectively.

Wherein, the two ends of each copper bar 1 are respectively provided with a high-voltage socket 6, each copper bar 1 is provided with a connecting section 11, the connecting sections 11 on the adjacent copper bars 1 are oppositely arranged, and a preset gap is arranged between the oppositely arranged adjacent connecting sections 11. One end of each connecting piece 2 is connected to the corresponding connecting section 11 on the copper bar 1, and the other end of each connecting piece 2 forms a connecting end 21 connected to the BDU 7.

As described above, the copper bar connection structure of this embodiment is through the high-voltage sockets 6 that set up at copper bar 1 both ends to link to each other with BDU7 through connecting piece 2 at linkage segment 11, make two high-voltage sockets 6 be connected to BDU7 on through common copper bar 1, be favorable to reducing BDU7 interface quantity, shorten and connect copper bar 1 length, can be convenient for high-voltage sockets 6 and BDU7 be connected simultaneously, thereby be favorable to improving the practicality of electronic four-wheel drive system.

Based on the above overall description, specifically, the present embodiment will be described in detail with reference to fig. 1 to 5, taking the number of copper bars 1 as two as an example. In the specific implementation, two ends of two copper bars 1 arranged side by side are respectively connected to two high-voltage sockets 6, and connecting sections 11 on the copper bars 1 are respectively arranged at positions of the two copper bars 1 close to the end parts.

In addition, the two copper bars 1 arranged side by side are bent to form the connecting section 11 with a preset gap, so that a certain air insulation gap is kept between the adjacent connecting sections 11. It should be noted that, in addition to the connection section 11 disposed at a position near the end of the copper bar 1, the connection section 11 may be disposed at any position on the copper bar 1, for example, in the middle of the copper bar 1, so as to adapt to different positional relationships between the BDU7 and the high-voltage socket 6.

Of course, it is understood that, in addition to arranging two copper bars 1 side by side, in this embodiment, the specific number of copper bars 1 in the copper bar connection structure may also be more than two, for example, three copper bars 1 are adopted to satisfy the three-phase current output. In addition, in the implementation, except for the connection section 11 and the connection parts of the two ends of the copper bar 1 and the high-voltage socket 6, the rest part of the copper bar 1 is provided with an insulating protection layer so as to ensure electrical safety.

As a preferred embodiment, as shown in fig. 1 to 4, the connecting sections 11 are provided with adapter rows 3, the connecting elements 2 are connected to the connecting sections 11 via the adapter rows 3, and the adapter rows 3 on adjacent connecting sections 11 are arranged offset. At this time, the transfer rows 3 are arranged in a staggered manner on the adjacent connection sections 11, so that interference between the adjacent transfer rows 3 is avoided, and the connection piece 2 is connected with the connection sections 11 through the transfer rows 3.

In particular, as an exemplary structure, the switching bar 3 is an L-shaped metal conductive plate, and structurally includes a lower portion for connecting with the connecting section 11, and an upper portion for connecting with the connecting member 2, where the upper portion and the lower portion are integrally connected by bending at an included angle of, for example, 90 °.

In detail, the lower part of the adapter row 3 is connected to the connecting section 11 by means of, for example, welding, riveting, while the upper part is provided in particular with through-holes for connection to the connecting elements 2, in order to firmly connect the connecting elements 2 to the adapter row 3 by means of, for example, screwing.

At the same time, the adapter rows 3 on the two connecting sections 11 are arranged in a staggered manner, and the upper parts of the two adapter rows 3 face the adjacent connecting sections 11, so that the through holes on the adapter rows 3 are aligned. In this way, it is advantageous to make the length dimensions of the connectors 2 connected between the adapter rows 3 and the BDU7 identical, so that the two connectors 2 can be used interchangeably.

As a preferred embodiment, as shown in fig. 1 and 3 to 5, the connection section 11 of the present embodiment is provided with a fixing support 4, and the fixing support 4 is disposed in one-to-one correspondence with the switching row 3 on the adjacent connection section 11, and the switching row 3 on the adjacent connection section 11 is connected to the connection section 11 through a fixing support.

At this time, through the setting of fixed bolster 4, be favorable to guaranteeing the clearance of predetermineeing between the adjacent linkage segment 11, be favorable to guaranteeing simultaneously that switching row 3 and linkage segment 11 connection structure are stable. In specific implementation, the fixing support 4 is arranged between the connecting section 11 and the switching row 3 on the adjacent connecting section 11, so that a certain air insulation gap is kept between the adjacent connecting sections 11 and between the switching row 3 and the adjacent connecting sections 11, and the electrical safety of the copper bar connecting structure is ensured.

In this embodiment, as a preferred embodiment, as shown in fig. 3 to 5, the adapter row 3 is screwed to the connector 2, and the insert nut 43 for screwing the adapter row 3 to the connector 2 is provided on the fixing support 4.

At this time, by providing the insert nut 43, the connection between the connecting piece 2 and the adapter row 3 and the connection between the connecting piece 2 and the fixed support 4 are more stable and firm, and the connecting piece 2 and the adapter row 3 are facilitated to be connected. In particular, as an exemplary structure, through holes for the connection bolts 8 to pass through are provided on both the adapter rows 3 and the connection pieces 2.

When the switching row 3 and the connecting piece 2 are fixed in the installation, the switching row 3 and the connecting piece 2 are sequentially lapped on the fixed support 4, pass through the through holes on the switching row 3 and the connecting piece 2 through the bolts 8, and fasten the bolts 8 on the insert nuts 43, so that the connecting piece 2 and the switching row 3 are firmly fixed on the fixed support, and connection conduction between the connecting piece 2 and the switching row 3 can be ensured.

As a preferred embodiment, as shown in fig. 1 and 3 to 5, the fixing support 4 includes a first clamping groove 41 and a fixing groove 42, wherein the insert nut 43 is located in the fixing groove 42, the first clamping groove 41 is used for clamping the fixing support 4 on the adjacent connection section 11, and the fixing groove 42 is used for fixing the switching bar 3 and the connection section 11 on the fixing support 4.

At this time, in this embodiment, by providing the first clamping groove 41 and the fixing groove 42, the connection among the fixing support 4, the switching row 3 and the connection section 11 is facilitated to be more stable, and meanwhile, the assembly and the maintenance are also facilitated. In particular, the fixing support 4 is made of plastic material, so as to ensure insulation between the switching bar 3 and the adjacent connecting section 11.

Meanwhile, as shown in fig. 5, the fixing groove 42 and the first clamping groove 41 are respectively arranged at two ends of the fixing support 4, and the width of the first clamping groove 41 is slightly larger than the thickness of the copper bar 1, so that the fixing support 4 can be clamped on the copper bar 1, and the width of the fixing groove 42 is slightly larger than the width of the switching bar 3 and the connecting piece 2, so that the switching bar 3 and the connecting piece 2 can be conveniently fixed in the fixing groove 42.

When the fixing support 4 of the embodiment is installed, the two copper bars 1 arranged side by side are firstly separated from each other, so that the distance between the two connecting sections 11 is increased. And the two fixing supports 4 are respectively clamped on the connecting sections 11 corresponding to the switching rows 3 on the adjacent connecting sections 11 one by one through the first clamping grooves 41.

At this time, the two copper bars 1 are brought close to each other so that the distance between the two connection sections 11 is reduced, and as shown in fig. 3 to 4, the upper portions of the adapter bars 3 are respectively entered into the fixing grooves 42 of the fixing bases 4 of the adjacent connection sections 11, thereby completing the installation of the fixing bases 4, and then the connection members 2 and the adapter bars 3 are fastened to the fixing bases 4 by the bolts 8.

The copper bar connection structure of this embodiment links to each other through high-voltage socket 6 that sets up at copper bar 1 both ends to and link to each other with BDU7 through connecting piece 2 in linkage segment 11 department, make two high-voltage socket 6 be connected to BDU7 on through common copper bar 1, be favorable to reducing BDU7 interface quantity, shorten and connect copper bar 1 length, can be convenient for high-voltage socket 6 and BDU7 be connected, and can be favorable to improving the practicality of electronic four-wheel drive system.

Example two

The present embodiment relates to a copper bar connection structure, which is substantially the same as the copper bar connection structure in the first embodiment, and is mainly different in that, as shown in fig. 6 to 14, the connection piece 2 of the present embodiment includes a conductive clip 5 provided with a second clamping groove 51, and the connection section 11 is clamped on the conductive clip 5 through the second clamping groove 51. To meet different design requirements.

At this time, the arrangement of the conductive clamp spring 5 and the second clamping groove 51 is beneficial to enabling the connecting section 11 to be clamped on the conductive clamp spring 5 more accurately and conveniently, so as to improve the connection efficiency of the connecting section 11 and the connecting piece 2. Unlike the form of connecting the copper bar 1 to one side of the BDU7 in the first embodiment, the copper bar 1 of the present embodiment is connected to the middle of the BDU7, so that it is possible to adapt to different arrangements of the BDU 7.

It should be noted that, in the copper bar connection structure of the present embodiment, the connection pieces 2 are respectively connected to the copper bars 1 arranged side by side, the two ends of each copper bar 1 are respectively provided with the high-voltage sockets 6, the adjacent connection sections 11 arranged oppositely are provided with the preset gaps, one end of each connection piece 2 is connected to the connection section 11, and the other end of each connection piece 2 forms the connection end 21, which is the same as the copper bar connection structure in the first embodiment, and will not be described in detail in the present embodiment.

Based on the above overall description, specifically, referring to fig. 7 to 14, the present embodiment still uses two copper bars 1 as an example, and the copper bar connection structure will be described in detail. In practice, the conductive clip 5 is fixed on the BDU7 by related structures known to those skilled in the art, for example, two clip mounting grooves 71 shown in fig. 11 are provided on the BDU7, and the conductive clip 5 is specifically clamped in the clip mounting grooves 71.

In the copper bar connecting structure of the embodiment, when the copper bar connecting structure is installed, two snap spring installation grooves 71 are arranged at intervals, and connecting sections 11 on two copper bars 1 are respectively clamped in second clamping grooves 51 on two conductive snap springs 5, so that a preset gap is formed between the two connecting sections 11. At the same time, the region of the conductive clip 5 in contact with the connecting section 11, i.e., the inside of the second clamping groove 51, is provided with, for example, a plating layer to reduce contact resistance, and can facilitate reduction of rust of the second clamping groove 51.

As a preferred embodiment, as shown in fig. 8 and 13, the connection end 21 of the present embodiment is provided with a third clamping groove 52, and the conductive clip 5 is connected to the BDU7 through the third clamping groove 52. So configured, the provision of the third clamping groove 52 facilitates the quick and stable connection of the conductive clip spring 5 to the BDU 7.

In specific implementation, the copper bar inside the BDU7 is clamped in the third clamping groove 52, so that the connection section 11 clamped in the second clamping groove 51 is connected and conducted with the copper bar inside the BDU7 clamped in the third clamping groove 52, and the connection between the copper bar 1 and the BDU7 is realized.

In this embodiment, as a preferred embodiment, as shown in fig. 13 to 14, the conductive clip spring 5 includes a plurality of reeds 53 stacked together, each of the reeds 53 is provided with a clip opening 531, and the clip openings 531 on each of the reeds 53 together form a second clip groove 51 and a third clip groove 52.

At this time, through the design of the multiple reeds 53 of the conductive jump ring 5 and the arrangement of the clamping interface 531, the structural strength of the conductive jump ring 5 is improved, and meanwhile, the number of reeds 53 in the conductive jump ring 5 can be conveniently and flexibly adjusted so as to adapt to the transmission currents with different sizes.

In specific implementation, the conductive clamp spring 5 formed by stacking a plurality of reeds 53 adopts the existing structure or product with the clamping and conducting functions of the copper bar 1, wherein the number of the reeds 53 can be adjusted according to the current required to pass through the conductive clamp spring 5, for example, the current carrying capacity of a single reed 53 is 20A, and when the transmission current flowing through the conductive clamp spring 5 is 200A, the conductive clamp spring 5 is formed by stacking at least 10 reeds 53.

In this embodiment, as a preferred embodiment, as shown in fig. 8 and 13, the conductive clip 5 has an H shape, and the second and third clamping grooves 51 and 52 are respectively provided at both ends of the conductive clip 5. So set up, adopt the conductive jump ring 5 that is H shape design, make second joint groove 51 and second joint groove 51 be located conductive jump ring 5 both ends respectively, can be convenient for conductive jump ring 5 be connected with link 11 and BDU7 respectively.

In specific implementation, the conductive clamp spring 5 is connected with the copper bar inside the BDU7 through the third clamping groove 52, so that the connection between the copper bar 1 and the BDU7 is realized. The inside copper bar of BDU7 is equipped with in the jump ring mounting groove 71, and the link 21 joint of electrically conductive jump ring 5 makes the inside copper bar joint of BDU7 in third joint groove 52 simultaneously in jump ring mounting groove 71. The notch direction of the second clamping groove 51 of the conductive clamp spring 5 is consistent with that of the clamp spring mounting groove 71, so that the copper bar 1 can be conveniently clamped.

The copper bar connection structure of this embodiment is through setting up the electrically conductive jump ring 5 of H shape that has second joint groove 51 and third joint groove 52, can be convenient for copper bar 1 and BDU7 be connected fast reliably. In addition, the high-voltage socket 6 is connected with the BDU7 through the common copper bar 1, which is favorable for reducing BDU7 interfaces and improving the space utilization rate, thereby being favorable for improving the practicability of the electric four-wheel drive system.

Example III

The present embodiment relates to a vehicle provided with an electric four-wheel drive system and the copper bar connecting structure in the first or second embodiment. The structure not described in the vehicle can be referred to the existing structure.

The vehicle of this embodiment can be convenient for the high-voltage socket 6 to be connected with the BDU7 by applying the copper bar connection structure of the first embodiment, and is favorable for improving the practicality of the electric four-wheel drive system.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. The utility model provides an electronic four-wheel drive system copper bar connection structure which characterized in that:

The copper bar structure comprises a plurality of copper bars arranged side by side and connecting pieces respectively connected to the copper bars;

The two ends of each copper bar are respectively provided with a high-voltage socket, each copper bar is provided with a connecting section, the connecting sections on adjacent copper bars are oppositely arranged, and a preset gap is arranged between the adjacent connecting sections which are oppositely arranged;

One end of each connecting piece is connected to the corresponding connecting section on the copper bar, and the other end of each connecting piece forms a connecting end connected with the BDU.

2. The electric four-wheel drive system copper bar connection structure according to claim 1, wherein:

the connecting section is provided with a switching row, the connecting piece is connected to the connecting section through the switching row, and the adjacent switching on the connecting section is arranged in a staggered mode.

3. The electric four-wheel drive system copper bar connection structure according to claim 2, wherein:

The connecting section is provided with a fixed support, the fixed support and the switching row on the adjacent connecting section are arranged in one-to-one correspondence, and the switching row on the adjacent connecting section is connected to the connecting section through the fixed support.

4. The electric four-wheel drive system copper bar connection structure according to claim 3, wherein:

The switching row is connected with the connecting piece in a threaded manner, and the fixed support is provided with an insert nut for the switching row to be connected with the connecting piece in a threaded manner.

5. The electric four-wheel drive system copper bar connection structure according to claim 4, wherein:

The fixing support comprises a first clamping groove and a fixing groove, and the insert nut is positioned in the fixing groove;

The first clamping groove is used for clamping the fixed support to the adjacent connecting section, and the fixed groove is used for fixing the switching row and the connecting section to the fixed support.

6. The electric four-wheel drive system copper bar connection structure according to claim 1, wherein:

The connecting piece comprises a conductive clamp spring provided with a second clamping groove, and the connecting section is clamped on the conductive clamp spring through the second clamping groove.

7. The electric four-wheel drive system copper bar connection structure according to claim 6, wherein:

And the connecting end is provided with a third clamping groove, and the conductive clamp spring is connected to the BDU through the third clamping groove.

8. The electric four-wheel drive system copper bar connection structure according to claim 7, wherein:

The conductive clamp spring comprises a plurality of reeds which are overlapped together, each reed is provided with a clamping interface, and the clamping interfaces on each reed jointly form the second clamping groove and the third clamping groove.

9. The electric four-wheel drive system copper bar connection structure according to claim 8, wherein:

the conductive clamp spring is H-shaped, and the second clamping groove and the third clamping groove are respectively arranged at two ends of the conductive clamp spring.

10. A vehicle, characterized in that:

An electric four-wheel drive system is arranged in the vehicle, and the copper bar connecting structure of the electric four-wheel drive system is arranged in the vehicle.