Longitudinal beam, longitudinal beam assembly, tray, battery pack and vehicle

Abstract

The longitudinal beam is used for the battery pack and comprises a main body and a sliding rail, the main body extends in the first direction, the sliding rail is arranged on the main body and extends in the first direction, the sliding rail is suitable for being matched with a supporting component connected with a seat of the vehicle so that the supporting component can slide along the sliding rail, and the seat is directly installed on the sliding rail. Compared with the prior art, a seat installation support is saved, the seat sliding rail and an installation support of the seat sliding rail do not need to be additionally installed, assembling procedures are reduced, and the assembling efficiency of the seat sliding rail is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a longitudinal beam, a longitudinal beam assembly, a tray, a battery pack and a vehicle. Background Art

[0002] The seats of a vehicle are used for passengers to sit in the vehicle, and the slide rails provide the seat with a position adjustment function. In the prior art, the slide rails need to be assembled to the upper cover of the battery pack. During the installation of the slide rails, the slide rail fixing holes are first integrated into the upper cover of the battery pack, and then the battery pack is assembled to the vehicle body using bolts. The assembly efficiency of the seat slide rails is low. Utility Model Content

[0003] The utility model aims to provide a longitudinal beam, a longitudinal beam assembly, a tray, a battery pack and a vehicle, so as to solve the problem of low assembly efficiency of seat slide rails.

[0004] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0005] In a first aspect, the utility model provides a longitudinal beam for a battery pack, comprising: a main body extending along a first direction; a slide rail arranged on the main body and extending along the first direction, the slide rail being suitable for cooperating with a supporting member connected to a seat of a vehicle so that the supporting member slides along the slide rail.

[0006] In one embodiment, the thickness of the slide rail is smaller than the thickness of the main body.

[0007] In one embodiment, the main body has step surfaces on both sides in the thickness direction of the slide rail.

[0008] In one embodiment, the main body further includes a connecting portion, and the slide rail is connected to the main body via the connecting portion.

[0009] In one embodiment, a dimension of the connecting portion in a thickness direction of the slide rail is smaller than a thickness of the slide rail.

[0010] In one embodiment, the slide rail is provided with a slide groove along the first direction, and the slide groove is suitable for accommodating at least a part of the structure of the supporting member.

[0011] In one embodiment, the main body includes a first surface and a top surface, the first surface is suitable for facing the battery cells of the battery pack, the top surface is suitable for facing the seat, and the slide rail is arranged on the top surface.

[0012] In one embodiment, the slide rail is located in a local area of ​​the longitudinal beam, and the slide rail is suitable for corresponding to the front seat of the vehicle; and / or, the slide rail is suitable for corresponding to the rear seat of the vehicle.

[0013] In one embodiment, the slide rail includes a first rail and a second rail, the first rail and the second rail are spaced apart in the first direction, the first rail is suitable for corresponding to the front seat of the vehicle, and the second rail is suitable for corresponding to the rear seat of the vehicle.

[0014] In a second aspect, the utility model further provides a longitudinal beam assembly, comprising a supporting member and the longitudinal beam as described in any embodiment of the first aspect, wherein the supporting member cooperates with the slide rail so that the supporting member slides on the slide rail along the first direction.

[0015] In one embodiment, a portion of the structure of the support member accommodates the slide rail, and the shape of the portion of the support member accommodating the slide rail is adapted to the shape of the slide rail.

[0016] In one embodiment, the supporting member includes a sliding portion and a connecting portion, wherein the sliding portion partially accommodates the slide rail, the shape of the portion of the sliding portion accommodating the slide rail is adapted to the shape of the slide rail, the connecting portion is detachably connected to the sliding portion, and the connecting portion is suitable for connection to a seat of a vehicle.

[0017] In the third aspect, the utility model also provides a pallet, comprising: a bottom plate; a frame, connected to the bottom plate and together with the bottom plate to form a receiving space; a longitudinal beam as described in any embodiment of the first aspect, the longitudinal beam is received in the receiving space; or a longitudinal beam assembly as described in any embodiment of the second aspect, the longitudinal beam assembly is received in the receiving space.

[0018] In one embodiment, there are multiple longitudinal beams and they are spaced apart along the second direction, one of the seats of the vehicle corresponds to at least two of the longitudinal beams, and the second direction intersects with the first direction.

[0019] In a fourth aspect, the utility model further provides a battery pack, comprising a longitudinal beam as described in any embodiment of the first aspect; or, the battery pack comprises a longitudinal beam assembly as described in any embodiment of the second aspect; or, the battery pack comprises a tray as described in any embodiment of the third aspect.

[0020] In one embodiment, the battery pack further includes a battery cell and a cover plate, wherein the battery cell is accommodated in the accommodation space of the tray, the cover plate is connected to the side of the frame of the tray away from the bottom plate of the tray, the cover plate is formed with a mounting seam, and the slide rail extends out of the mounting seam.

[0021] In one embodiment, the cover plate is connected to the longitudinal beam, and the battery pack further includes a sealant, which is disposed between the cover plate and the longitudinal beam.

[0022] In a fifth aspect, the present invention further provides a vehicle, comprising a battery pack as described in any embodiment of the fourth aspect.

[0023] By setting a main body and a slide rail, the main body extends along a first direction, the slide rail is set on the main body and extends along the first direction, the slide rail is suitable for cooperating with a supporting member connected to a seat of the vehicle so that the supporting member slides along the slide rail. Compared with the slide rail being integrated into the cover of the battery pack, the seat is directly mounted on the slide rail, which saves a seat mounting bracket, and there is no need to additionally install a seat slide rail and a mounting bracket for the seat slide rail, which reduces the assembly process and improves the assembly efficiency of the seat slide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a top view of a battery pack of an embodiment;

[0026] Figure 2 is a left side view of a battery pack of an embodiment;

[0027] Figure 3 The right side view of a battery pack of an embodiment.

[0028] Description of reference numerals:

[0029] 10-longitudinal beam, 11-main body, 111-first surface, 112-top surface, 12-slide rail, 121-slide groove, 13-tray, 14-bottom plate, 15-frame, 16-accommodation space, 17-cover plate, X-first direction, Y-second direction. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0032] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0033] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0034] In view of the above problems, the present invention provides a longitudinal beam 10 for a battery pack. Figure 1 , Figure 2 and Figure 3 , including a main body 11 and a slide rail 12.

[0035] The body 11 extends along a first direction X. Optionally, the first direction X is a length direction of the vehicle.

[0036] The slide rail 12 is provided on the main body 11 and extends along the first direction X. The slide rail 12 is suitable for cooperating with a supporting member connected to the seat of the vehicle so that the supporting member slides along the slide rail 12. Specifically, compared with the slide rail 12 integrated into the cover of the battery pack, the slide rail 12 provided on the main body 11 has a higher degree of integration, a simple process, and reduced costs, and the distance of the slide rail 12 is lengthened, and the movable distance of the seat is increased. Specifically, the slide rail 12 is integrated into the longitudinal beam 10, and there is no need to additionally install a seat slide rail and a mounting bracket for the seat slide rail, which reduces the height and increases the internal space of the passenger compartment. Specifically, the load-bearing capacity of the slide rail 12 is dispersed over the entire battery pack, rather than just concentrated on the cover, which is safer.

[0037] By setting a main body 11 and a slide rail 12, the main body 11 extends along a first direction X, the slide rail 12 is set on the main body 11 and extends along the first direction X, the slide rail 12 is suitable for cooperating with a supporting member connected to a seat of the vehicle so that the supporting member slides along the slide rail 12. Compared with the slide rail 12 being integrated into the cover of the battery pack, the seat is directly mounted on the slide rail 12, which saves a seat mounting bracket, and there is no need to additionally install a seat slide rail and a mounting bracket for the seat slide rail, which reduces the assembly process and improves the assembly efficiency of the seat slide rail 12.

[0038] In one embodiment, please refer to Figure 1 , the thickness of the slide rail 12 is smaller than the thickness of the main body 11 .

[0039] Optionally, the thickness of the slide rail 12 along the second direction Y is smaller than the thickness of the main body 11 along the second direction Y.

[0040] Specifically, the thickness of the slide rail 12 is smaller than the thickness of the main body 11 , so that the area between the main body 11 and the slide rail 12 is convenient for installing the cover plate 17 .

[0041] In one embodiment, please refer to Figure 1 The main body 11 has step surfaces on both sides of the slide rail 12 in the thickness direction.

[0042] Optionally, the main body 11 has step surfaces on both sides of the slide rail 12 in the second direction Y.

[0043] Optionally, the step surfaces on both sides of the slide rail 12 in the thickness direction abut against the supporting member.

[0044] Specifically, the above arrangement improves the convenience and stability of the cooperation between the slide rail 12 and the supporting member.

[0045] In one embodiment, please refer to Figure 1 The main body 11 also includes a connecting portion, and the slide rail 12 is connected to the main body 11 through the connecting portion.

[0046] Optionally, one end of the connection portion is connected to the slide rail 12, and the other end is connected to the main body 11. Optionally, there may be a spacing distance between the slide rail 12 and the main body 11. Optionally, the spacing distance between the slide rail 12 and the main body 11 may be determined according to the use requirements of the vehicle.

[0047] Optionally, the connecting portion, the slide rail 12 and the main body 11 are all integrated structures.

[0048] Specifically, the above arrangement improves the structure of the longitudinal beam 10 , so that the supporting member will not scratch the main body 11 when sliding along the slide rail 12 .

[0049] In one embodiment, please refer to Figure 1 , the dimension of the connecting portion in the thickness direction of the slide rail 12 is smaller than the thickness of the slide rail 12 .

[0050] Optionally, the thickness of the connecting portion in the second direction Y is smaller than the thickness of the slide rail 12 in the second direction Y.

[0051] Optionally, the dimension of the connection portion in the thickness direction of the slide rail 12 is smaller than the thickness of the slide rail 12 , so that the gap where the longitudinal beam 10 extends out of the cover plate 17 will not be too large, which is beneficial to the sealing effect of the cover plate 17 on the main body 11 .

[0052] In one embodiment, please refer to Figure 1The slide rail 12 is provided with a slide groove 121 along the first direction X, and the slide groove 121 is suitable for accommodating at least a part of the structure of the supporting member.

[0053] Optionally, the cross section of the chute 121 may be polygonal, circular, elliptical, irregular, etc. Optionally, the cross section of the chute 121 may be, but not limited to, quadrilateral, pentagon, hexagon, octagon, circular, elliptical, etc.

[0054] Specifically, the above arrangement improves the sliding stability of the support member and the slide rail 12 .

[0055] In one embodiment, please refer to Figure 1 The main body 11 includes a first surface 111 and a top surface 112 . The first surface 111 is suitable for facing the battery cells of the battery pack, and the top surface 112 is suitable for facing the seat. The slide rail 12 is arranged on the top surface 112 .

[0056] Optionally, the first surface 111 is polished, and the polishing method may be fluid polishing, mechanical polishing, chemical polishing, electrolytic polishing, etc. Polishing the first surface 111 improves the smoothness of the first surface 111 and avoids scratching other parts of the vehicle.

[0057] Optionally, the top surface 112 is polished, and the polishing method may be fluid polishing, mechanical polishing, chemical polishing, electrolytic polishing, etc. Polishing the top surface 112 improves the smoothness of the top surface 112 and avoids scratching other parts of the vehicle.

[0058] Specifically, the above arrangement improves the structure of the main body 11 and the position information of the main body 11, so that the layout of the main body 11, the battery pack and the seat is compact, saving space.

[0059] In one embodiment, please refer to Figure 1 The slide rail 12 is located in a local area of ​​the longitudinal beam 10, and the slide rail 12 is suitable for corresponding to the front seat of the vehicle; and / or, the slide rail is suitable for corresponding to the rear seat of the vehicle.

[0060] Optionally, the slide rail 12 is arranged in the area of ​​the longitudinal beam 10 near the front of the passenger compartment, and the slide rail 12 is suitable for corresponding to the front seat of the vehicle. Optionally, the slide rail 12 is arranged in the entire area of ​​the longitudinal beam 10 located in the passenger compartment, and the slide rail 12 is suitable for corresponding to the front seat and the rear seat of the vehicle at the same time.

[0061] Specifically, the above arrangement makes the seat adjustment process more playable and provides a better experience.

[0062] Specifically, the above arrangement improves the flexibility of the arrangement of the slide rail 12 to meet the needs of different vehicle models.

[0063] In one embodiment, please refer to Figure 1The slide rail 12 includes a first rail and a second rail, the first rail and the second rail are spaced apart in a first direction X, the first rail is suitable for corresponding to the front seat of the vehicle, and the second rail is suitable for corresponding to the rear seat of the vehicle.

[0064] The embodiment of the utility model further provides a longitudinal beam 10 assembly, comprising a supporting member and a longitudinal beam 10 as in any of the aforementioned embodiments, wherein the supporting member cooperates with a slide rail 12 so that the supporting member slides along a first direction X on the slide rail 12 .

[0065] Optionally, the specific structure of the support member may not be limited, and the support member is connected to the bottom of the seat in an integrated or split manner without limitation.

[0066] Specifically, the above-mentioned arrangement of the first rail and the second rail improves the flexibility of the arrangement of the slide rail 12 to meet the needs of different vehicle models.

[0067] In one embodiment, please refer to Figure 1 Part of the structure of the supporting member accommodates the slide rail 12 , and the shape of the part of the supporting member accommodating the slide rail 12 is adapted to the shape of the slide rail 12 .

[0068] Optionally, the cross-sectional shape of the supporting member is a "concave" shape, and the slide rail 12 is a "convex" shape, and the two are adapted to each other.

[0069] Optionally, the utility model does not limit the specific structure of the support member and the slide rail 12. The above structure is for illustration only. The specific structure of the two may also be as follows: part of the structure of the support member is accommodated in the slide rail 12, and the shape of the part of the support member accommodated in the slide rail 12 is adapted to the shape of the slide rail 12. The cross-sectional shape of the support member may be "convex" and the slide rail 12 may be "concave", and the two are adapted to each other.

[0070] Specifically, the above arrangement improves the structure of the support member and the slide rail 12 , and improves the stability of the support member sliding along the slide rail 12 .

[0071] In one embodiment, please refer to Figure 1 The supporting member includes a sliding portion and a connecting portion. The sliding portion partially accommodates the slide rail 12. The shape of the portion of the sliding portion that accommodates the slide rail 12 is adapted to the shape of the slide rail 12. The connecting portion is detachably connected to the sliding portion, and the connecting portion is suitable for connecting to a seat of a vehicle.

[0072] Optionally, the cross-sectional shape of the supporting member is concave, the slide rail 12 is convex, part of the structure of the slide rail 12 extends into the sliding part, the sliding part contacts the slide rail 12 and can slide along the slide rail 12, and the shape of the part of the sliding part that accommodates the slide rail 12 is adapted to the shape of the slide rail 12.

[0073] Optionally, the connection method between the connecting part and the seat of the vehicle may specifically be, but is not limited to, a bolt and nut connection and a snap connection.

[0074] Specifically, the above-mentioned arrangement of the sliding part and the connecting part improves the structure of the supporting member and enhances the stability of the supporting member sliding along the slide rail 12 .

[0075] The present utility model also provides a tray 13, please refer to Figure 1 , Figure 2 and Figure 3 , including: a bottom plate 14; a frame 15, connected to the bottom plate 14, and together with the bottom plate 14, enclosed to form a receiving space 16; like the longitudinal beam 10 in any of the aforementioned embodiments, the longitudinal beam 10 is received in the receiving space 16; or, like the longitudinal beam 10 assembly in any of the aforementioned embodiments, the longitudinal beam 10 assembly is received in the receiving space 16.

[0076] Optionally, the shape of the bottom plate 14 may be polygonal, circular, elliptical, irregular, etc. Optionally, the shape of the bottom plate 14 may be, but is not limited to, quadrilateral, pentagon, hexagon, octagon, circular, elliptical, irregular, etc.

[0077] Optionally, the size of the bottom plate 14 , the size of the frame 15 , and the size of the longitudinal beam 10 may be determined according to the use requirements of the vehicle.

[0078] Specifically, the above arrangement improves the structure of the tray 13, increases the compactness of the tray 13, and saves space in the vehicle.

[0079] In one embodiment, please refer to Figure 1 There are multiple longitudinal beams 10 and they are arranged at intervals along the second direction Y. One of the seats of the vehicle corresponds to at least two longitudinal beams 10. The second direction Y intersects with the first direction X.

[0080] Optionally, the number of longitudinal beams 10 can be 2, 4, 6, etc., and the utility model does not limit this. Optionally, the frame 15 includes a first side beam and a second side beam. Among the multiple longitudinal beams 10, one longitudinal beam 10 can be arranged closely to the first side beam, and one longitudinal beam 10 can be arranged closely to the second side beam. The remaining longitudinal beams 10 are all located between the first side beam and the second side beam. The multiple longitudinal beams 10 can be arranged at equal or unequal intervals in the second direction Y without limitation. When the longitudinal beam 10 is arranged closely to the first side beam and / or the second side beam, it can reinforce the first side beam and / or the second side beam and enhance its structural strength. The other longitudinal beams 10 arranged between the first side beam and the second side beam and spaced from the first side beam and the second side beam can enhance the overall structural strength of the tray 13, and can divide the receiving space 16 of the tray 13 into multiple subspaces, each of which can be provided with a battery cell to enhance the fixing effect on the battery cell.

[0081] The seat of the vehicle corresponds to at least two longitudinal beams 10, for example, one seat corresponds to two longitudinal beams 10, so that one seat is connected to two supporting members, and the two supporting members slide relative to the two longitudinal beams 10 in a one-to-one correspondence, so as to enhance the support stability of the seat. Of course, the seat can correspond to three or even more longitudinal beams 10 to further enhance the support stability thereof.

[0082] When the vehicle has two front seats, the two front seats are arranged at intervals along the left-right direction of the vehicle, and each front seat corresponds to at least two longitudinal beams 10. When the vehicle has three rear seats, the three rear seats are arranged at intervals along the left-right direction of the vehicle, and two of the three rear seats can share the same longitudinal beam 10 with the two front seats.

[0083] Optionally, there may be one longitudinal beam 10, which is disposed in the middle between the first side beam and the second side beam, and the longitudinal beam 10 may be equidistant from the first side beam and the second side beam.

[0084] Specifically, the above arrangement improves the flexibility of the arrangement of the longitudinal beam 10 .

[0085] An embodiment of the utility model further provides a battery pack, the battery pack comprising the longitudinal beam 10 as in any of the aforementioned embodiments; or, the battery pack comprising the longitudinal beam assembly as in any of the aforementioned embodiments; or, the battery pack comprising the tray 13 as in any of the aforementioned embodiments.

[0086] In one embodiment, please refer to Figure 1 The battery pack also includes a battery cell and a cover plate. The battery cell is accommodated in the accommodating space 16 of the tray 13. The cover plate 17 is connected to the side of the frame 15 of the tray 13 away from the bottom plate 14 of the tray 13. The cover plate 17 forms a mounting seam, and the slide rail 12 extends out of the mounting seam.

[0087] Optionally, the specific structure of the battery cell is not limited. The battery cell is a soft-pack battery cell, which is fixed by the tray 13. Compared with the solution of first loading the battery cell into the shell and then installing it on the tray 13, the battery cell is a soft-pack battery cell and is directly fixed to the tray 13, which saves the step of loading the battery cell into the shell, eliminates the shell, and improves the space utilization. The tray 13 is the tray 13 in the embodiment of the utility model, and no excessive restrictions are made here. The cover plate 17 is connected to the frame 15 of the tray 13 and closes the receiving space 16, so that the battery cell is in an environment isolated from the outside world, which improves the safety level of the battery cell.

[0088] Optionally, the slide rail 12 on the longitudinal beam 10 passes through the installation seam on the cover plate 17 to cooperate with the support member to prevent the cover plate 17 from interfering with the support member.

[0089] Specifically, the battery pack has higher torsional rigidity and higher safety.

[0090] In one embodiment, please refer to Figure 1 The cover plate 17 is connected to the longitudinal beam 10 , and the battery pack further includes a seal, which is arranged between the cover plate 17 and the longitudinal beam 10 .

[0091] Optionally, the cover plate 17 can be a whole piece and a mounting seam is provided thereon. Optionally, the cover plate 17 can also be a plurality of pieces, and the plurality of cover plates 17 are sequentially spaced apart, and the gap between two adjacent cover plates 17 forms the mounting seam, which is not limited.

[0092] Specifically, the seal improves the sealing function between the cover plate 17 and the longitudinal beam 10 and improves the safety of the battery pack.

[0093] An embodiment of the utility model also provides a vehicle, including a vehicle body, a seat, a support member and a battery pack as in any of the aforementioned embodiments, wherein the battery pack is connected to the vehicle body, the seat is connected to the support member, and the support member cooperates with and slides relative to a longitudinal beam 10 of the battery pack.

[0094] Optionally, the vehicle can be divided into micro-cars, light-duty cars, mid-size cars and luxury cars according to the displacement of the engine, and the vehicles all have a battery pack as in any of the aforementioned embodiments. Optionally, the vehicle of the embodiment of the utility model is a vehicle with a battery pack, which can be a pure electric vehicle, a plug-in hybrid electric vehicle and an extended-range hybrid electric vehicle, etc., without limitation. Among them, the body and battery pack of the vehicle of the embodiment of the utility model adopt integrated integration technology, and the battery pack is no longer simply connected to the body. Specifically, the battery pack is connected to the body, and the support member connected to the seat can slide along the longitudinal beam 10 of the battery pack, that is, the longitudinal beam 10 of the battery pack plays the role of the seat slide rail 12, which improves the integration of the battery pack and the body.

[0095] Optionally, the specific structure of the vehicle body is not limited, and the seats are arranged in the vehicle body. The seats can be arranged as needed, such as one row, two rows or even three rows of seats, and each row can be provided with two or three seats arranged side by side. Taking a four-door five-seat vehicle as an example, the seats include front seats and rear seats, the front seats are two arranged side by side and spaced apart, and the rear seats are three connected as one.

[0096] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship of the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0097] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the present invention still fall within the scope covered by the present invention.

Claims

1. A longitudinal beam for a battery pack, characterized in that: include: A main body extending along a first direction; A slide rail is arranged on the main body and extends along the first direction. The slide rail is suitable for cooperating with a support member connected to a seat of the vehicle so that the support member slides along the slide rail.

2. The longitudinal beam according to claim 1, characterized in that The thickness of the slide rail is smaller than the thickness of the main body.

3. The longitudinal beam according to claim 2, characterized in that The main body has step surfaces on both sides of the slide rail in the thickness direction.

4. The longitudinal beam according to claim 3, characterized in that The main body also includes a connecting portion, and the slide rail is connected to the main body through the connecting portion.

5. The longitudinal beam according to claim 4, characterized in that A dimension of the connection portion in a thickness direction of the slide rail is smaller than a thickness of the slide rail.

6. The longitudinal beam according to claim 1, characterized in that The slide rail is provided with a slide groove along the first direction, and the slide groove is suitable for accommodating at least a part of the structure of the supporting member.

7. The longitudinal beam according to claim 1, characterized in that The main body includes a first surface and a top surface, the first surface is suitable for facing the battery cells of the battery pack, the top surface is suitable for facing the seat, and the slide rail is arranged on the top surface.

8. The longitudinal beam according to any one of claims 1 to 7, characterized in that The slide rail is located in a local area of ​​the longitudinal beam, and the slide rail is suitable for corresponding to the front seat of the vehicle; and / or the slide rail is suitable for corresponding to the rear seat of the vehicle.

9. The longitudinal beam according to any one of claims 1 to 7, characterized in that The slide rail includes a first rail and a second rail, the first rail and the second rail are spaced apart in the first direction, the first rail is suitable for corresponding to the front seat of the vehicle, and the second rail is suitable for corresponding to the rear seat of the vehicle.

10. A longitudinal beam assembly, characterized in that: The invention comprises a supporting member and the longitudinal beam according to any one of claims 1 to 9, wherein the supporting member cooperates with the slide rail so that the supporting member slides on the slide rail along the first direction.

11. The longitudinal beam assembly according to claim 10, characterized in that A portion of the structure of the support member accommodates the slide rail, and a shape of the portion of the support member accommodating the slide rail matches a shape of the slide rail.

12. The longitudinal beam assembly according to claim 10, characterized in that The support member includes a sliding portion and a connecting portion. The sliding portion partially accommodates the slide rail. The shape of the portion of the sliding portion accommodating the slide rail is adapted to the shape of the slide rail. The connecting portion is detachably connected to the sliding portion and is suitable for connection to a vehicle seat.

13. A pallet, characterized in that: include: Base plate; A frame connected to the bottom plate and enclosed together with the bottom plate to form a receiving space ； The longitudinal beam according to any one of claims 1 to 9, wherein the longitudinal beam is received in the receiving space; or, The longitudinal beam assembly according to any one of claims 10 to 12, wherein the longitudinal beam assembly is accommodated in the accommodation space.

14. The pallet according to claim 13, characterized in that There are a plurality of longitudinal beams which are spaced apart along the second direction, one of the seats of the vehicle corresponds to at least two of the longitudinal beams, and the second direction intersects with the first direction.

15. A battery pack, characterized in that: The battery pack comprises a longitudinal beam as claimed in any one of claims 1 to 9; Alternatively, the battery pack comprises a longitudinal beam assembly as claimed in any one of claims 10 to 12; Alternatively, the battery pack comprises the tray as claimed in claim 13 or 14.

16. The battery pack according to claim 15, characterized in that: The battery pack further comprises a battery cell and a cover plate, wherein the battery cell is accommodated in the accommodation space of the tray, the cover plate is connected to a side of the frame of the tray away from the bottom plate of the tray, the cover plate is formed with a mounting seam, and the slide rail extends out of the mounting seam.

17. The battery pack according to claim 16, characterized in that: The cover plate is connected to the longitudinal beam, and the battery pack further includes a sealant disposed between the cover plate and the longitudinal beam.

18. A vehicle, characterized in that: It comprises a vehicle body, a seat, a support member and a battery pack as described in any one of claims 15 to 17, wherein the battery pack is connected to the vehicle body, the seat is connected to the support member, and the support member cooperates with a longitudinal beam of the battery pack and slides relatively therewith.

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