CN217374661U

CN217374661U - Connection structure and electric automobile

Info

Publication number: CN217374661U
Application number: CN202221440819.6U
Authority: CN
Inventors: 钟平; 张加勋
Original assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Current assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-09-06
Anticipated expiration: 2032-06-09

Abstract

The utility model discloses a connection structure and electric automobile relates to car technical field. The connection structure comprises a connection beam, an outer connection assembly and an inner connection assembly, wherein the connection beam comprises a front connection end and a rear connection end. Outer coupling assembling sets up in one side of tie-beam, and inner coupling assembling sets up in one side that the tie-beam deviates from outer coupling assembling, and outer coupling assembling all sets up to the distance of the cross section of preceding link along the direction of transversely keeping away from the tie-beam gradually increasing towards one side of preceding link, inner coupling assembling towards one side of preceding link. Form the triangle-shaped structure among the above-mentioned connection structure, connection structure can keep overall structure's stability through this triangle-shaped structure better at the in-process of transmission impact for the tie-beam can transmit impact to doorsill beam and floor through outer coupling assembling and inner coupling assembling steadily after bearing the impact that comes from the front longitudinal, is favorable to guaranteeing connection structure and corresponding electric automobile's safety in utilization.

Description

Connection structure and electric automobile

Technical Field

The utility model relates to the technical field of automobiles, in particular to connection structure and electric automobile.

Background

Automotive safety has been a concern in the automotive field. The automobile safety systems include active safety systems such as ABS (Antilock Brake System) and passive safety systems such as a vehicle body structure. Passenger vehicles typically employ a front-drive system, which may be equipped with an engine compartment at the front end and a passenger compartment at the rear end. At the moment, the passive safety system comprises a bumper, two front longitudinal beams arranged side by side, a passenger compartment structure comprising a threshold beam and a passenger compartment frame and the like which are sequentially connected, so that collision energy during collision is effectively absorbed, and the safety of passengers is ensured.

In an electric vehicle, a battery pack disposed under the passenger compartment is the primary source of power. Along with the requirement of the industry on the endurance mileage is higher and higher, the volume of the battery pack is also increased continuously, and the occupation degree of the section space of the rear section of the front longitudinal beam is increased. Therefore, the structural requirements of the electric automobile on the front longitudinal beam rear section are more severe, but the structural strength of the passive safety system including the front longitudinal beam rear section also needs to be ensured, so that the use safety of the electric automobile is ensured.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a connection structure and electric automobile to be favorable to guaranteeing the safety in utilization.

In order to achieve the above object, the utility model provides a connection structure for connect front longitudinal and threshold roof beam. The connecting structure comprises a connecting beam, an outer connecting assembly and an inner connecting assembly. The connecting beam comprises a front connecting end and a rear connecting end, the front connecting end is used for being fixedly connected with the front longitudinal beam, and the rear connecting end is used for being fixedly connected with the floor of the passenger compartment; the outer connecting assembly is arranged on one side of the connecting beam, and the distance from one side of the outer connecting assembly facing the front connecting end to the cross section of the front connecting end is gradually increased along the direction transversely far away from the connecting beam; the internal connection subassembly sets up the tie-beam deviates from one side of external connection subassembly, the internal connection subassembly orientation one side of preceding link arrives the distance of the cross section of preceding link is along transversely keeping away from the direction crescent of tie-beam.

Optionally, outer coupling assembling deviates from one side of tie-beam is equipped with first bending board, first bending board be used for with the top fixed connection of the side of threshold roof beam.

Optionally, the rear connection end is provided with a bottom plane; the outer connecting assembly comprises an outer connecting plate, the plate plane of the outer connecting plate is fixedly connected with the bottom plane, the distance from one side of the outer connecting plate, facing the front connecting end, to the cross section of the front connecting end is gradually increased along the direction of transversely keeping away from the connecting beam, and the first bending plate is arranged on one side of the outer connecting plate, away from the connecting beam; the internal connection subassembly includes the internal connection board, the inboard plane of internal connection board with the baseplane fixed connection, the internal connection board towards one side of preceding link is to the distance of the cross section of preceding link is along transversely keeping away from the direction of tie-beam is crescent.

Optionally, the outer connecting assembly further includes an outer vertical plate, and a bottom side of the outer vertical plate is fixedly connected to one side of the outer connecting plate facing the front connecting end; the inner connecting component further comprises an inner vertical plate, and the bottom side of the inner vertical plate is fixedly connected with one side, facing the front connecting end, of the inner connecting plate.

Optionally, an extending section extending out of the outer connecting plate in a direction away from the connecting beam is arranged on the outer vertical plate, and the bottom of the extending section is used for being fixedly connected with the top surface of the threshold beam.

Optionally, the connecting beam includes a groove structure, the groove structure extends along a direction from the front connecting end to the rear connecting end, and at least a part of the groove structure is arranged such that a depth thereof gradually increases along a direction away from the front connecting end; the groove body structure comprises an outer side wall plate, an outer bottom wall plate, an inner bottom wall plate and an inner side wall plate which are sequentially arranged along the groove width direction, the outer side wall plate and the outer bottom wall plate are integrally formed, and the inner side wall plate and the inner bottom wall plate are integrally formed; the inner bottom wall panel at least partially covers the outer bottom wall panel, and the inner bottom wall panel is fixedly connected with the outer bottom wall panel.

Optionally, a second bending plate is arranged at the top of the outer side wall plate, and a plate plane of the second bending plate is used for being fixedly connected with the bottom surface of the front longitudinal beam; and a third bending plate is arranged at the top of the inner side wall plate, and the plate plane of the third bending plate is fixedly connected with the bottom surface of the front longitudinal beam.

Optionally, the connecting beam includes a slot structure, and the slot structure extends along a direction from the front connecting end to the rear connecting end; the connecting structure further comprises a connecting pipe, the connecting pipe is arranged in the groove body structure, and the connecting pipe is fixedly connected with the bottom wall of the groove body structure; a connecting through hole is formed in the bottom wall of the groove body structure, and one end of the connecting pipe is communicated with the connecting through hole and is used for connecting an auxiliary frame; the other end of the connecting pipe is used for being fixedly connected with the front longitudinal beam.

Optionally, a connecting weld is arranged between the connecting pipe and the bottom wall of the groove body structure, and the connecting weld is formed by gas shielded welding.

Optionally, the inner connection assembly comprises a connection portion for connecting with a battery pack.

The utility model also provides an electric automobile, which comprises a front longitudinal beam, a threshold beam and the connecting structure; or the electric automobile comprises a front longitudinal beam, a threshold beam, a battery pack and the connecting structure; the bottom plane with be equipped with between the top surface of battery package and predetermine the interval, predetermine the interval and be greater than 6 millimeters and be less than 12 millimeters.

The technical scheme of the utility model through the external connection subassembly with the tie-beam both sides, the internal connection subassembly sets up to the direction crescent along the transverse direction of keeping away from the tie-beam to the distance of the cross section of preceding link to one side of link before orientation, make to form the triangle-shaped structure among the connection structure, connection structure can keep overall structure's stability better through this triangle-shaped structure at the in-process of transmission impact, make the tie-beam after bearing the impact that comes from the front longitudinal, can transmit impact to doorsill roof beam and floor through external connection subassembly and internal connection subassembly steadily, be favorable to guaranteeing connection structure and corresponding electric automobile's safety in utilization.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 the structures shown in the drawings without creative efforts.

Fig. 1 is a perspective view of an embodiment of the connection structure of the present invention.

Fig. 2 is a front view (hidden part structure) of an embodiment of the connection structure of the present invention.

Fig. 3 is a bottom view of an embodiment of the connection structure of the present invention.

Fig. 4 is a perspective view of the connection structure of the present invention in a bottom view.

Fig. 5 is a bottom view (hidden part structure) of an embodiment of the electric vehicle according to the present invention.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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 efforts belong to the protection scope of the present invention.

It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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" or "second" may explicitly or implicitly include at least one of the feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a connection structure, this connection structure can be applied to electric automobile.

Referring to fig. 1 and 2, in an embodiment of the present invention, the connecting structure is used to connect the front side member 4 and the threshold beam. The connecting structure comprises a connecting beam 1, an outer connecting component 2 and an inner connecting component 3. The inside-outside direction corresponds to the direction indicated by the Y axis shown in the drawings, and "inside" and "outside" refer to the inside and the outside of the corresponding electric vehicle, that is, the outside of the electric vehicle is located with respect to the inside connection unit 3 when the outside connection unit 2 is mounted on the corresponding electric vehicle. The connecting beam 1 comprises a front connecting end 11 and a rear connecting end 12, wherein the front connecting end 11 is fixedly connected with the front longitudinal beam 4, and the rear connecting end 12 is fixedly connected with the floor 6 of the passenger compartment. Here, the front-rear direction corresponds to the direction of the X axis shown in the drawings, and "front" and "rear" refer to the front end and the rear end of the corresponding electric vehicle, that is, the front connection end 11 is located at the front end of the electric vehicle relative to the rear connection end 12 after the connection structure is mounted on the corresponding electric vehicle. Outer coupling assembling 2 sets up in one side of tie-beam 1 (the outside of tie-beam 1), outer coupling assembling 2 is along transversely keeping away from the direction of tie-beam 1 (the outside direction) crescent to the distance of the cross section of preceding tie-beam 11 in one side (the front side) of preceding tie-beam 11, inner coupling assembling 3 sets up in one side (the inboard of tie-beam 1) that tie-beam 1 deviates from outer coupling assembling 2, inner coupling assembling 3 is along transversely keeping away from the direction of tie-beam 1 (the direction inwards) crescent to the distance of the cross section of preceding tie-beam 11 in one side (the front side) of preceding tie-beam 11. For the inner joint member 3 as an example, the distance is shown by referring to a dimension L shown in fig. 3, that is, the dimension L gradually increases in a direction indicated by an arrow on the Y axis in fig. 3. Thus, the connecting beam 1, the outer connecting member 2, and the inner connecting member 3 form a triangular structure as shown by a dotted line frame in fig. 3. It should be noted that, as the distance (corresponding to the dimension L) increases gradually, the side (front side) of the outer connecting member 2 facing the front connecting end 11 and the side (front side) of the inner connecting member 3 facing the front connecting end 11 may be set as inclined straight lines or as arc lines (relative to the projection of the Z axis in the drawing).

Through the external connection subassembly 2 with the tie-beam both sides, internal connection subassembly 3 sets up to the distance of one side (the front side) to the cross section of front connection end 11 towards front connection end 11 along the direction (inwards or outwards direction) of transversely keeping away from tie-beam 1 crescent, make to form the triangle-shaped structure among the connection structure, connection structure can keep overall structure's stability better through this triangle-shaped structure at the in-process of transmission impact, make the tie-beam bear the impact back from front longitudinal beam 4, can transmit impact to doorsill beam and floor 6 through external connection subassembly 2 and internal connection subassembly 3 steadily, be favorable to guaranteeing connection structure and corresponding electric automobile's safety in utilization.

Further as an alternative embodiment, the connection beam 1 may be provided in the following structure. Referring to fig. 1, the connection beam 1 includes a tank structure, the tank structure extends along a direction (front-rear direction) from the front connection end 11 to the rear connection end 12, that is, along a direction of an X axis shown in the drawing, and a notch of the tank structure is disposed upward (as shown by a Z-direction arrow shown in the drawing). As shown in fig. 2, at least a portion of the groove structure is configured to have a depth (as shown by a dimension H in fig. 2) gradually increasing along a direction away from the front connection end 11 (i.e., along a direction away from an arrow of an X axis in fig. 2, i.e., a direction from right to left in the drawing), so that not only is more installation space provided in front of the connection structure, but also the V-direction strength of the connection structure (see fig. 1) can be improved, i.e., the connection structure can be better prevented from being deflected up and down.

As shown in fig. 1, the tank body structure includes an outer sidewall plate 131, an outer sidewall plate 132, an inner sidewall plate 133 and an inner sidewall plate 134, which are sequentially arranged along a tank width direction (e.g., a Y-axis direction shown in the drawing), wherein the outer sidewall plate 131 and the outer sidewall plate 132 are integrally formed, and may be formed by a sheet metal process such as bending, stamping, or the like, or a casting process; the inner sidewall plate 134 and the inner bottom wall plate 133 are integrally formed, and may be formed by a sheet metal process such as bending and stamping, or a casting process. The inner bottom wall panel 133 at least partially covers the outer bottom wall panel 132, including both top-view and bottom-view coverage, i.e., the inner bottom wall panel 133 partially or completely overlies the outer bottom wall panel 132, or the outer bottom wall panel 132 partially or completely overlies the inner bottom wall panel 133; the inner bottom wall plate 133 and the outer bottom wall plate 132 are fixedly connected, and the fixed connection can be completed through processes such as welding, riveting, bolting and the like. Because at least part of the groove body structure is arranged to have the depth gradually increased along the direction far away from the front connecting end 11, the complexity of punch forming or casting forming of the groove body structure is increased, and the corresponding manufacturing cost is increased; the groove body structure is arranged in such a way that the inner bottom wall plate 133 at least partially covers the outer bottom wall plate 132, so that the groove body structure can be divided into two parts to be manufactured independently, namely, the outer side wall plate 131 and the outer bottom wall plate 132 are used as one part, the inner side wall plate 134 and the inner bottom wall plate 133 are used as the other part, the two independent parts are spliced and fixed to form a complete groove body structure, and the whole manufacturing cost of the groove body structure is reduced.

As shown in fig. 1, a second bending plate 1311 is disposed at the top of the outer side wall plate 131, and a plate plane of the second bending plate 1311 is used for being fixedly connected with the bottom surface of the front longitudinal beam 4, for example, by bolting, riveting, and welding; the top of the inner side wall plate 134 is provided with a third bending plate 1341, and the plate plane of the third bending plate 1341 is used for being fixedly connected with the bottom surface of the front longitudinal beam 4, for example, fixedly connected by means of bolting, riveting and welding. Both the second bending plate 1311 and the third bending plate 1341 can improve the structural strength of the coupling structure W (see fig. 1), that is, both the second bending plate 1311 and the third bending plate 1341 can improve the lateral deflection resistance of the coupling structure.

As shown in fig. 1 and 2, the connection structure further includes a connection pipe 135, the connection pipe 135 is disposed in the tank structure, and the connection pipe 135 is fixedly connected to the bottom wall of the tank structure; be equipped with connect the through-hole on the diapire of cell body structure, the one end and the connect the through-hole intercommunication of connecting pipe 135 to be used for connecting sub vehicle frame. Be equipped with the joint weld between the diapire of connecting pipe 135 and cell body structure, connecting pipe 135 is through the bottom wall fixed connection of joint weld and cell body structure promptly, and the joint weld is formed by gas shielded arc welding, specifically can adopt carbon dioxide gas or argon gas to weld as the gas shielded arc of protective gas. As an alternative embodiment, the connection pipe 135 and the bottom wall of the tank structure may be fixedly connected by riveting, screwing, or the like. The connection pipe 135 may be a threaded pipe, and at this time, the bolt structure of the sub-frame may pass through the connection through hole formed in the bottom wall of the groove structure to be connected to the connection pipe 135. The other end (i.e., the upper end shown in fig. 1) of the connecting pipe 135 is used for fixed connection with the front side member 4. The connecting pipe 135 is fixedly connected with the bottom wall of the tank body structure, and the other end of the connecting pipe is fixedly connected with the front longitudinal beam 4, so that the V-direction strength of the tank body structure can be further improved (refer to fig. 1), and the connecting structure can be better prevented from deflecting up and down. The connecting weld is formed by gas shielded welding, which can improve the quality of the weld, further improve the V-directional strength of the connecting pipe 135 and the groove structure (refer to fig. 1), that is, further improve the capability of the connecting structure to resist up and down deflection.

As shown in fig. 3, the rear coupling end 12 of the coupling beam 1 is provided with a bottom plane 121 for more conveniently coupling the following structure of the external coupling assembly 2.

Further as an alternative embodiment, the outer connection member 2 and the inner connection member 3 may be configured as follows.

As shown in fig. 1, 3 and 4, the external connection assembly 2 includes an external connection plate 21, a plate plane of the external connection plate 21 is fixedly connected with the bottom plane 121, and a distance from one side (front side) of the external connection plate 21 facing the front connection end 11 to a cross section of the front connection end 11 is gradually increased along a direction (outward direction) transversely far away from the connection beam 1, so that a distance from one side (front side) of the external connection assembly 2 facing the front connection end 11 to the cross section of the front connection end 11 is gradually increased along a direction (outward direction) transversely far away from the connection beam 1; the inner connection assembly 3 includes an inner connection plate 31, a plate plane of the inner connection plate 31 is fixedly connected with the bottom plane 121, a distance from one side (front side) of the inner connection plate 31 facing the front connection end 11 to a cross section of the front connection end 11 is gradually increased along a direction (inward direction) transversely far away from the connection beam 1, so that the distance from one side (front side) of the inner connection assembly 3 facing the front connection end 11 to the cross section of the front connection end 11 is gradually increased along a direction (inward direction) transversely far away from the connection beam 1. The fixed connection can adopt a welding, riveting or bolt connection mode.

Taking the inner link plate 31 as an example, the distance is shown by referring to the dimension L shown in fig. 3, i.e., the dimension L gradually increases in the direction along the Y-axis in fig. 3. Therefore, the connecting beam 1, the outer connecting plate 21 and the inner connecting plate 31 form a triangular structure as shown by a dotted line frame in fig. 3, so that the connecting structure can better keep the stability of the whole structure through the triangular structure in the process of transmitting the collision force. It should be noted that, as the distance (corresponding to the dimension L) increases gradually, the side (front side) of the outer connecting plate 21 facing the front connecting end 11 and the side (front side) of the inner connecting plate 31 facing the front connecting end 11 may be set as an inclined straight line or an arc line (with respect to the projection of the Z axis in the drawing). Outer connecting plate 21's board plane and bottom plane 121 fixed connection, inner connecting plate 31's board plane and bottom plane 121 fixed connection for tie-beam 1, outer coupling assembling 2, inner coupling assembling 3 whole form comparatively regular smooth bottom surface, should level the space more squarely under the bottom surface, more be favorable to the battery package 5 that corresponds to form smooth top surface, thereby battery package 5 when improving space utilization, also can reduce the design manufacturing cost.

The outer connecting plates 21 and the inner connecting plates 31 may be formed with protrusions and/or depressions by a stamping process, etc., to further improve the structural strength.

The outer connecting assembly 2 further comprises an outer vertical plate 22, the bottom side of the outer vertical plate 22 is fixedly connected with one side (front side) of the outer connecting plate 21 facing the front connecting end 11, namely the outer vertical plate 22 is arranged along one side of the triangular structure; the fixed connection can be completed by welding process or by sheet metal processes such as bending and stamping. The inner connecting component 3 further includes an inner vertical plate 32, the bottom side of the inner vertical plate 32 is fixedly connected with one side (front side) of the inner connecting plate 31 facing the front connecting end 11, that is, the inner vertical plate 32 is arranged along the other side of the triangular structure, and the fixed connection can be completed by a welding process or by sheet metal processes such as bending and stamping. The bottom side of the outer vertical plate 22 is fixedly connected with one side (front side) of the outer connecting plate 21 facing the front connecting end 11, and the bottom side of the inner vertical plate 32 is fixedly connected with one side (front side) of the inner connecting plate 31 facing the front connecting end 11, so that the structural strength of a triangular structure formed by the connecting beam 1, the outer connecting plate 21 and the inner connecting plate 31 can be improved, the U-direction structural strength of the connecting structure is improved (refer to fig. 1), and the side-turning-resisting capacity of the connecting structure is improved.

The outer side of the outer joint member 2 is provided with a first bending plate 23. Specifically, the first bending plate 23 is provided on a side (outer side) of the outer connecting plate 21 facing away from the connecting beam 1. The first bending plate 23 is used for being fixedly connected with the top of the side of the rocker beam. The outer vertical plate 22 is provided with an outer extending section 24 extending out of the outer connecting plate 21 along a direction (outward direction) deviating from the connecting beam 1, and the bottom of the outer extending section 24 is fixedly connected with the top surface of the sill beam. First board 23 that bends is used for the top fixed connection with the side of threshold roof beam, the bottom of overhanging section 24 is used for the top surface fixed connection with the threshold roof beam, and the homoenergetic is in when guaranteeing joint strength for the relative threshold roof beam lifting of the whole plane that locates of baseplane 121, outer junction plate 21, inner junction plate 31 provides more height space for the battery package 5 of bottom.

Further as an alternative embodiment, the inner connection assembly 3 includes a connection portion 33 for connecting with the battery pack 5. As shown in fig. 1, the connection part 33 may be provided as a through hole so that the connection with the battery pack 5 is performed by a bolt. As an alternative embodiment, the connection portion 33 may be provided as a snap structure or the like. The connection portion 33 can further enhance the V-directional strength of the groove structure (see fig. 1) by itself in connection with the battery pack 5 or by cooperating with the connection pipe 135, and further improve the resistance of the connection structure against vertical deflection.

The utility model also provides an electric automobile, this electric automobile include front longitudinal 4, threshold roof beam and battery package 5, and this electric automobile still includes above-mentioned connection structure. A preset distance is arranged between the bottom plane 121 of the rear connecting end 12 of the connecting beam 1 and the top surface of the battery pack 5, and the preset distance is more than 6 mm and less than 12 mm; further, the predetermined distance is greater than 8 mm and less than 10 mm. The arrangement of the preset distance enables the battery pack 5 to efficiently utilize the space under the connection structure, and is beneficial to ensuring the use safety of the battery pack 5. The specific structure of the connection structure refers to the above embodiments, and since the electric vehicle adopts all technical solutions of all the above embodiments, at least all beneficial effects brought by the technical solutions of the above embodiments are achieved, and details are not repeated herein.

In manufacturing the electric vehicle having the above connection structure, referring to fig. 5, the component assembly may be connected to the first bending plate 23 and the overhanging portion 24 by welding points; connecting the outer connecting plate 21, the outer bottom wall plate 132 and the inner bottom wall plate 133 of the outer connecting component 2 by welding points to form the groove structure by the outer side wall plate 131, the outer bottom wall plate 132, the inner bottom wall plate 133, the inner side wall plate 134 and the like; then connecting the connecting pipe 135 to the tank body structure through gas shielded welding using carbon dioxide or argon as a protective gas, and connecting the two subassemblies of the outer connecting component 2 and the inner connecting component 3 to the connecting beam 1 through welding points to form the connecting structure; finally, the connecting structure is welded to the front side frame 4, and the bottom plane 121 and the top surface of the battery pack 5 have the preset distance therebetween.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. A connecting structure for connecting a front side member and a rocker beam, comprising:

the connecting beam comprises a front connecting end and a rear connecting end, the front connecting end is used for being fixedly connected with the front longitudinal beam, and the rear connecting end is used for being fixedly connected with the floor of the passenger compartment;

the distance from one side of the outer connecting assembly facing the front connecting end to the cross section of the front connecting end is gradually increased along the direction transversely far away from the connecting beam;

the inner connecting assembly sets up the tie-beam deviates from one side of outer connecting assembly, the inner connecting assembly orientation one side of preceding link is arrived the distance of the cross section of preceding link is along transversely keeping away from the direction crescent of tie-beam.

2. The connection according to claim 1, characterized in that a side of the outer connecting member facing away from the connecting beam is provided with a first bending plate for fixed connection with a top of a side of the threshold beam.

3. The connection according to claim 2, wherein the rear connection end is provided with a bottom plane; the outer connecting assembly comprises an outer connecting plate, the plate plane of the outer connecting plate is fixedly connected with the bottom plane, the distance from one side of the outer connecting plate, facing the front connecting end, to the cross section of the front connecting end is gradually increased along the direction of transversely keeping away from the connecting beam, and the first bending plate is arranged on one side of the outer connecting plate, away from the connecting beam; the internal connection subassembly includes the internal connection board, the inboard plane of internal connection board with the baseplane fixed connection, the internal connection board towards one side of preceding link is to the distance of the cross section of preceding link is along transversely keeping away from the direction of tie-beam is crescent.

4. The connecting structure according to claim 3, wherein the outer connecting assembly further comprises an outer vertical plate, and the bottom side of the outer vertical plate is fixedly connected with one side of the outer connecting plate facing the front connecting end; the inner connecting component further comprises an inner vertical plate, and the bottom side of the inner vertical plate is fixedly connected with one side, facing the front connecting end, of the inner connecting plate.

5. The connecting structure according to claim 4, wherein the outer standing plate is provided with an outer extending section extending out of the outer connecting plate in a direction away from the connecting beam, and the bottom of the outer extending section is fixedly connected with the top surface of the threshold beam.

6. The connection structure of claim 1, wherein the connection beam comprises a channel structure, the channel structure extends along a direction from the front connection end to the rear connection end, and at least a portion of the channel structure is arranged such that a depth thereof gradually increases along a direction away from the front connection end; the groove body structure comprises an outer side wall plate, an outer bottom wall plate, an inner bottom wall plate and an inner side wall plate which are sequentially arranged along the groove width direction, the outer side wall plate and the outer bottom wall plate are integrally formed, and the inner side wall plate and the inner bottom wall plate are integrally formed; the inner bottom wall panel at least partially covers the outer bottom wall panel, the inner bottom wall panel being fixedly connected with the outer bottom wall panel.

7. The attachment structure according to claim 6 wherein a second bent panel is provided at a top portion of said outer side wall panel, a panel plane of said second bent panel being adapted to be fixedly connected to a bottom surface of said front side member; and a third bending plate is arranged at the top of the inner side wall plate, and the plate plane of the third bending plate is fixedly connected with the bottom surface of the front longitudinal beam.

8. The connection structure of claim 1, wherein the connection beam comprises a slot structure extending in a direction from the front connection end to the rear connection end; the connecting structure further comprises a connecting pipe, the connecting pipe is arranged in the groove body structure, and the connecting pipe is fixedly connected with the bottom wall of the groove body structure; a connecting through hole is formed in the bottom wall of the groove body structure, and one end of the connecting pipe is communicated with the connecting through hole and is used for connecting an auxiliary frame; the other end of the connecting pipe is used for being fixedly connected with the front longitudinal beam.

9. The connection according to claim 8, wherein a connection weld is provided between the connection pipe and the bottom wall of the tank structure, the connection weld being formed by gas shielded welding.

10. The connection structure as set forth in any one of claims 1 to 9, wherein the internal connection member includes a connection part for connection with a battery pack.

11. An electric vehicle comprising a front side member and a rocker member, characterized by further comprising the connecting structure of claim 1 or 2; or, the electric vehicle includes a front side member, a rocker beam, a battery pack, and the connecting structure of any one of claims 3 to 10; the bottom plane with be equipped with between the top surface of battery package and predetermine the interval, predetermine the interval and be greater than 6 millimeters and be less than 12 millimeters.